fix tests for new inits

.travis.yml

@@ -16,6 +16,6 @@ install:
 
 script:
 
-    - cd $TRAVIS_BUILD_DIR && ./testing/tests.sh
+    - cd $TRAVIS_BUILD_DIR && ./tests.sh
     - test -z "$GOFMT"
     - goveralls -coverprofile=./coverage.out -service travis-ci

Godeps/Godeps.json

@@ -1,30 +0,0 @@
-{
-	"ImportPath": "github.com/s-rah/go-ricochet",
-	"GoVersion": "go1.7",
-	"GodepVersion": "v79",
-	"Packages": [
-		"./..."
-	],
-	"Deps": [
-		{
-			"ImportPath": "github.com/golang/protobuf/proto",
-			"Rev": "8ee79997227bf9b34611aee7946ae64735e6fd93"
-		},
-		{
-			"ImportPath": "github.com/yawning/bulb",
-			"Rev": "85d80d893c3d4a478b8c0abbc43f0ea13e1ce4f9"
-		},
-		{
-			"ImportPath": "github.com/yawning/bulb/utils",
-			"Rev": "85d80d893c3d4a478b8c0abbc43f0ea13e1ce4f9"
-		},
-		{
-			"ImportPath": "github.com/yawning/bulb/utils/pkcs1",
-			"Rev": "85d80d893c3d4a478b8c0abbc43f0ea13e1ce4f9"
-		},
-		{
-			"ImportPath": "golang.org/x/net/proxy",
-			"Rev": "60c41d1de8da134c05b7b40154a9a82bf5b7edb9"
-		}
-	]
-}

Godeps/Readme

@@ -1,5 +0,0 @@
-This directory tree is generated automatically by godep.
-
-Please do not edit.
-
-See https://github.com/tools/godep for more information.

LICENSE

@@ -25,8 +25,8 @@ SOFTWARE.
 
 --------------------------------------------------------------------------------
 
-Autogenerated protobuf code was generated using the proto file from Ricochet.
+Autogenerated protobuf code was generated using the proto file from Ricochet. 
-They are covered under the following license.
+They are covered under the following license. 
 
               Ricochet - https://ricochet.im/
 Copyright (C) 2014, John Brooks <john.brooks@dereferenced.net>
@@ -61,4 +61,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 --------------------------------------------------------------------------------
 
+The go-ricochet logo is based on an image by Olga Shalakhina 
+<osshalakhina@gmail.com> who in turn modified the original gopher images made by 
+Renee French.  The image is licensed under Creative Commons 3.0 Attributions.
+
+--------------------------------------------------------------------------------
+
 go-ricochet is not affiliated with or endorsed by Ricochet.im or the Tor Project.

README.md

@@ -1,5 +1,7 @@
 # GoRicochet [![Build Status](https://travis-ci.org/s-rah/go-ricochet.svg?branch=master)](https://travis-ci.org/s-rah/go-ricochet) [![Go Report Card](https://goreportcard.com/badge/github.com/s-rah/go-ricochet)](https://goreportcard.com/report/github.com/s-rah/go-ricochet) [![Coverage Status](https://coveralls.io/repos/github/s-rah/go-ricochet/badge.svg?branch=master)](https://coveralls.io/github/s-rah/go-ricochet?branch=master)
 
+![GoRicochet](logo.png)
+
 GoRicochet is an experimental implementation of the [Ricochet Protocol](https://ricochet.im)
 in Go.
 

application/acceptallcontactmanager.go

@@ -1,23 +0,0 @@
-package application
-
-import (
-	"crypto/rsa"
-)
-
-// AcceptAllContactManager implements the contact manager interface an presumes
-// all connections are allowed.
-type AcceptAllContactManager struct {
-}
-
-// LookupContact returns that a contact is known and allowed to communicate for all cases.
-func (aacm *AcceptAllContactManager) LookupContact(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
-	return true, true
-}
-
-func (aacm *AcceptAllContactManager) GetContactDetails() (string, string) {
-	return "", ""
-}
-
-func (aacm *AcceptAllContactManager) ContactRequest(name string, message string) string {
-	return "Accepted"
-}

application/application.go

@@ -1,145 +0,0 @@
-package application
-
-import (
-	"crypto/rsa"
-	"github.com/s-rah/go-ricochet"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/connection"
-	"log"
-	"net"
-	"time"
-)
-
-// RicochetApplication bundles many useful constructs that are
-// likely standard in a ricochet application
-type RicochetApplication struct {
-	contactManager        ContactManagerInterface
-	privateKey            *rsa.PrivateKey
-	chatMessageHandler    func(*RicochetApplicationInstance, uint32, time.Time, string)
-	chatMessageAckHandler func(*RicochetApplicationInstance, uint32)
-	l       net.Listener
-}
-
-type RicochetApplicationInstance struct {
-	connection.AutoConnectionHandler
-	connection            *connection.Connection
-	RemoteHostname        string
-	ChatMessageHandler    func(*RicochetApplicationInstance, uint32, time.Time, string)
-	ChatMessageAckHandler func(*RicochetApplicationInstance, uint32)
-}
-
-func (rai *RicochetApplicationInstance) GetContactDetails() (string, string) {
-	return "EchoBot", "I LIVE 😈😈!!!!"
-}
-
-func (rai *RicochetApplicationInstance) ContactRequest(name string, message string) string {
-	return "Accepted"
-}
-
-func (rai *RicochetApplicationInstance) ContactRequestRejected() {
-}
-func (rai *RicochetApplicationInstance) ContactRequestAccepted() {
-}
-func (rai *RicochetApplicationInstance) ContactRequestError() {
-}
-
-func (rai *RicochetApplicationInstance) SendChatMessage(message string) {
-
-	// Technically this errors afte the second time but we can ignore it.
-	rai.connection.RequestOpenChannel("im.ricochet.chat", rai)
-
-	rai.connection.Do(func() error {
-		channel := rai.connection.Channel("im.ricochet.chat", channels.Outbound)
-		if channel != nil {
-			chatchannel, ok := (*channel.Handler).(*channels.ChatChannel)
-			if ok {
-				chatchannel.SendMessage(message)
-			}
-		}
-		return nil
-	})
-}
-
-func (rai *RicochetApplicationInstance) ChatMessage(messageID uint32, when time.Time, message string) bool {
-	go rai.ChatMessageHandler(rai, messageID, when, message)
-	return true
-}
-
-func (rai *RicochetApplicationInstance) ChatMessageAck(messageID uint32) {
-	rai.ChatMessageAckHandler(rai, messageID)
-}
-
-func (ra *RicochetApplication) Init(pk *rsa.PrivateKey, cm ContactManagerInterface) {
-	ra.privateKey = pk
-	ra.contactManager = cm
-	ra.chatMessageHandler = func(*RicochetApplicationInstance, uint32, time.Time, string) {}
-	ra.chatMessageAckHandler = func(*RicochetApplicationInstance, uint32) {}
-}
-
-func (ra *RicochetApplication) OnChatMessage(call func(*RicochetApplicationInstance, uint32, time.Time, string)) {
-	ra.chatMessageHandler = call
-}
-
-func (ra *RicochetApplication) OnChatMessageAck(call func(*RicochetApplicationInstance, uint32)) {
-	ra.chatMessageAckHandler = call
-}
-
-func (ra *RicochetApplication) handleConnection(conn net.Conn) {
-	rc, err := goricochet.NegotiateVersionInbound(conn)
-	if err != nil {
-		log.Printf("There was an error")
-		conn.Close()
-		return
-	}
-
-	ich := connection.HandleInboundConnection(rc)
-
-	err = ich.ProcessAuthAsServer(ra.privateKey, ra.contactManager.LookupContact)
-	if err != nil {
-		log.Printf("There was an error")
-		conn.Close()
-		return
-	}
-
-	rai := new(RicochetApplicationInstance)
-	rai.Init(ra.privateKey, "")
-	rai.RemoteHostname = rc.RemoteHostname
-	rai.connection = rc
-	rai.ChatMessageHandler = ra.chatMessageHandler
-	rai.ChatMessageAckHandler = ra.chatMessageAckHandler
-
-	rai.RegisterChannelHandler("im.ricochet.contact.request", func() channels.Handler {
-		contact := new(channels.ContactRequestChannel)
-		contact.Handler = rai
-		return contact
-	})
-	rai.RegisterChannelHandler("im.ricochet.chat", func() channels.Handler {
-		chat := new(channels.ChatChannel)
-		chat.Handler = rai
-		return chat
-	})
-	rc.Process(rai)
-}
-
-func (ra *RicochetApplication) Shutdown () {
-        log.Printf("Closing")
-        ra.l.Close()
-        log.Printf("Closed")
-}
-
-func (ra *RicochetApplication) Run(l net.Listener) {
-	if ra.privateKey == nil || ra.contactManager == nil {
-		return
-	}
-	ra.l = l
-        var err error
-	for err == nil {
-		conn, err := ra.l.Accept()
-		if err == nil {
-			go ra.handleConnection(conn)
-		} else {
-		        log.Printf("Closing")
-		        return
-		}
-	}
-}

application/contactmanagerinterface.go

@@ -1,11 +0,0 @@
-package application
-
-import (
-	"crypto/rsa"
-)
-
-// ContactManagerInterface provides a mechanism for autonous applications
-// to make decisions on what connections to accept or reject.
-type ContactManagerInterface interface {
-	LookupContact(hostname string, publicKey rsa.PublicKey) (allowed, known bool)
-}

application/examples/echobot/main.go

@@ -1,31 +0,0 @@
-package main
-
-import (
-	"github.com/s-rah/go-ricochet/application"
-	"github.com/s-rah/go-ricochet/utils"
-	"log"
-	"time"
-)
-
-func main() {
-	echobot := new(application.RicochetApplication)
-	pk, err := utils.LoadPrivateKeyFromFile("./testing/private_key")
-
-	if err != nil {
-		log.Fatalf("error reading private key file: %v", err)
-	}
-
-	l, err := application.SetupOnion("127.0.0.1:9051", "tcp4", "", pk, 9878)
-
-	if err != nil {
-		log.Fatalf("error setting up onion service: %v", err)
-	}
-
-	echobot.Init(pk, new(application.AcceptAllContactManager))
-	echobot.OnChatMessage(func(rai *application.RicochetApplicationInstance, id uint32, timestamp time.Time, message string) {
-		log.Printf("message from %v - %v", rai.RemoteHostname, message)
-		rai.SendChatMessage(message)
-	})
-	log.Printf("echobot listening on %s", l.Addr().String())
-	echobot.Run(l)
-}

application/ricochetonion.go

@@ -1,27 +0,0 @@
-package application
-
-import (
-	"crypto/rsa"
-	"github.com/yawning/bulb"
-	"net"
-)
-
-// "127.0.0.1:9051" "tcp4"
-// "/var/run/tor/control" "unix"
-func SetupOnion(torControlAddress string, torControlSocketType string, authentication string, pk *rsa.PrivateKey, onionport uint16) (net.Listener, error) {
-	c, err := bulb.Dial(torControlSocketType, torControlAddress)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := c.Authenticate(authentication); err != nil {
-		return nil, err
-	}
-
-	cfg := &bulb.NewOnionConfig{
-		DiscardPK:  true,
-		PrivateKey: pk,
-	}
-
-	return c.NewListener(cfg, onionport)
-}

auth/auth_message.go

@@ -18,7 +18,7 @@ package Protocol_Data_AuthHiddenService
 import proto "github.com/golang/protobuf/proto"
 import fmt "fmt"
 import math "math"
-import Protocol_Data_Control "github.com/s-rah/go-ricochet/wire/control"
+import Protocol_Data_Control "github.com/s-rah/go-ricochet/control"
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal

authhandler.go

@@ -0,0 +1,57 @@
+package goricochet
+
+import (
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"io"
+)
+
+// AuthenticationHandler manages the state required for the AuthHiddenService
+// authentication scheme for ricochet.
+type AuthenticationHandler struct {
+	clientCookie [16]byte
+	serverCookie [16]byte
+}
+
+// AddClientCookie adds a client cookie to the state.
+func (ah *AuthenticationHandler) AddClientCookie(cookie []byte) {
+	copy(ah.clientCookie[:], cookie[:16])
+}
+
+// AddServerCookie adds a server cookie to the state.
+func (ah *AuthenticationHandler) AddServerCookie(cookie []byte) {
+	copy(ah.serverCookie[:], cookie[:16])
+}
+
+// GenRandom generates a random 16byte cookie string.
+func (ah *AuthenticationHandler) GenRandom() [16]byte {
+	var cookie [16]byte
+	io.ReadFull(rand.Reader, cookie[:])
+	return cookie
+}
+
+// GenClientCookie generates and adds a client cookie to the state.
+func (ah *AuthenticationHandler) GenClientCookie() [16]byte {
+	ah.clientCookie = ah.GenRandom()
+	return ah.clientCookie
+}
+
+// GenServerCookie generates and adds a server cookie to the state.
+func (ah *AuthenticationHandler) GenServerCookie() [16]byte {
+	ah.serverCookie = ah.GenRandom()
+	return ah.serverCookie
+}
+
+// GenChallenge constructs the challenge parameter for the AuthHiddenService session.
+// The challenge is the a Sha256HMAC(clientHostname+serverHostname, key=clientCookie+serverCookie)
+func (ah *AuthenticationHandler) GenChallenge(clientHostname string, serverHostname string) []byte {
+	key := make([]byte, 32)
+	copy(key[0:16], ah.clientCookie[:])
+	copy(key[16:], ah.serverCookie[:])
+	value := []byte(clientHostname + serverHostname)
+	mac := hmac.New(sha256.New, key)
+	mac.Write(value)
+	hmac := mac.Sum(nil)
+	return hmac
+}

authhandler_test.go

@@ -0,0 +1,32 @@
+package goricochet
+
+import "testing"
+import "bytes"
+
+func TestGenChallenge(t *testing.T) {
+	authHandler := new(AuthenticationHandler)
+	authHandler.AddClientCookie([]byte("abcdefghijklmnop"))
+	authHandler.AddServerCookie([]byte("qrstuvwxyz012345"))
+	challenge := authHandler.GenChallenge("test.onion", "notareal.onion")
+	expectedChallenge := []byte{0xf5, 0xdb, 0xfd, 0xf0, 0x3d, 0x94, 0x14, 0xf1, 0x4b, 0x37, 0x93, 0xe2, 0xa5, 0x11, 0x4a, 0x98, 0x31, 0x90, 0xea, 0xb8, 0x95, 0x7a, 0x2e, 0xaa, 0xd0, 0xd2, 0x0c, 0x74, 0x95, 0xba, 0xab, 0x73}
+	t.Log(challenge, expectedChallenge)
+	if bytes.Compare(challenge[:], expectedChallenge[:]) != 0 {
+		t.Errorf("AuthenticationHandler Challenge Is Invalid, Got %x, Expected %x", challenge, expectedChallenge)
+	}
+}
+
+func TestGenClientCookie(t *testing.T) {
+	authHandler := new(AuthenticationHandler)
+	clientCookie := authHandler.GenClientCookie()
+	if clientCookie != authHandler.clientCookie {
+		t.Errorf("AuthenticationHandler Client Cookies are Different %x %x", clientCookie, authHandler.clientCookie)
+	}
+}
+
+func TestGenServerCookie(t *testing.T) {
+	authHandler := new(AuthenticationHandler)
+	serverCookie := authHandler.GenServerCookie()
+	if serverCookie != authHandler.serverCookie {
+		t.Errorf("AuthenticationHandler Server Cookies are Different %x %x", serverCookie, authHandler.serverCookie)
+	}
+}

channels/channel.go

@@ -1,35 +0,0 @@
-package channels
-
-// Direction indicated whether we or the remote peer opened the channel
-type Direction int
-
-const (
-	// Inbound indcates the channel was opened by the remote peer
-	Inbound Direction = iota
-	// Outbound indicated the channel was opened by us
-	Outbound
-)
-
-// AuthChannelResult captures the result of an authentication flow
-type AuthChannelResult struct {
-	Hostname       string
-	Accepted       bool
-	IsKnownContact bool
-}
-
-// Channel holds the state of a channel on an open connection
-type Channel struct {
-	ID int32
-
-	Type           string
-	Direction      Direction
-	Handler        *Handler
-	Pending        bool
-	ServerHostname string
-	ClientHostname string
-
-	// Functions for updating the underlying Connection
-	SendMessage           func([]byte)
-	CloseChannel          func()
-	DelegateAuthorization func()
-}

channels/chatchannel.go

@@ -1,146 +0,0 @@
-package channels
-
-import (
-	"crypto/rand"
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/chat"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"math"
-	"math/big"
-	"time"
-)
-
-// ChatChannel implements the ChannelHandler interface for a channel of
-// type "im.ricochet.chat". The channel may be inbound or outbound.
-//
-// ChatChannel implements protocol-level sanity and state validation, but
-// does not handle or acknowledge chat messages. The application must provide
-// a ChatChannelHandler implementation to handle chat events.
-type ChatChannel struct {
-	// Methods of Handler are called for chat events on this channel
-	Handler       ChatChannelHandler
-	channel       *Channel
-	lastMessageID uint32
-}
-
-// ChatChannelHandler is implemented by an application type to receive
-// events from a ChatChannel.
-//
-// Note that ChatChannelHandler is composable with other interfaces, including
-// ConnectionHandler; there is no need to use a distinct type as a
-// ChatChannelHandler.
-type ChatChannelHandler interface {
-	// ChatMessage is called when a chat message is received. Return true to acknowledge
-	// the message successfully, and false to NACK and refuse the message.
-	ChatMessage(messageID uint32, when time.Time, message string) bool
-	// ChatMessageAck is called when an acknowledgement of a sent message is received.
-	ChatMessageAck(messageID uint32)
-}
-
-// SendMessage sends a given message using this channe
-func (cc *ChatChannel) SendMessage(message string) {
-	messageBuilder := new(utils.MessageBuilder)
-	//TODO Implement Chat Number
-	data := messageBuilder.ChatMessage(message, cc.lastMessageID)
-	cc.lastMessageID++
-	cc.channel.SendMessage(data)
-}
-
-// Acknowledge indicates the given messageID was received
-func (cc *ChatChannel) Acknowledge(messageID uint32) {
-	messageBuilder := new(utils.MessageBuilder)
-	cc.channel.SendMessage(messageBuilder.AckChatMessage(messageID))
-}
-
-// Type returns the type string for this channel, e.g. "im.ricochet.chat".
-func (cc *ChatChannel) Type() string {
-	return "im.ricochet.chat"
-}
-
-// Closed is called when the channel is closed for any reason.
-func (cc *ChatChannel) Closed(err error) {
-
-}
-
-// OnlyClientCanOpen  - for chat channels any side can open
-func (cc *ChatChannel) OnlyClientCanOpen() bool {
-	return false
-}
-
-// Singleton - for chat channels there can only be one instance per direction
-func (cc *ChatChannel) Singleton() bool {
-	return true
-}
-
-// Bidirectional - for chat channels are not bidrectional
-func (cc *ChatChannel) Bidirectional() bool {
-	return false
-}
-
-// RequiresAuthentication - chat channels require hidden service auth
-func (cc *ChatChannel) RequiresAuthentication() string {
-	return "im.ricochet.auth.hidden-service"
-}
-
-// OpenInbound is the first method called for an inbound channel request.
-// If an error is returned, the channel is rejected. If a RawMessage is
-// returned, it will be sent as the ChannelResult message.
-func (cc *ChatChannel) OpenInbound(channel *Channel, raw *Protocol_Data_Control.OpenChannel) ([]byte, error) {
-	cc.channel = channel
-	id, err := rand.Int(rand.Reader, big.NewInt(math.MaxUint32))
-	if err != nil {
-		return nil, err
-	}
-	cc.lastMessageID = uint32(id.Uint64())
-	cc.channel.Pending = false
-	messageBuilder := new(utils.MessageBuilder)
-	return messageBuilder.AckOpenChannel(channel.ID), nil
-}
-
-// OpenOutbound is the first method called for an outbound channel request.
-// If an error is returned, the channel is not opened. If a RawMessage is
-// returned, it will be sent as the OpenChannel message.
-func (cc *ChatChannel) OpenOutbound(channel *Channel) ([]byte, error) {
-	cc.channel = channel
-	id, err := rand.Int(rand.Reader, big.NewInt(math.MaxUint32))
-	if err != nil {
-		return nil, err
-	}
-	cc.lastMessageID = uint32(id.Uint64())
-	messageBuilder := new(utils.MessageBuilder)
-	return messageBuilder.OpenChannel(channel.ID, cc.Type()), nil
-}
-
-// OpenOutboundResult is called when a response is received for an
-// outbound OpenChannel request. If `err` is non-nil, the channel was
-// rejected and Closed will be called immediately afterwards. `raw`
-// contains the raw protocol message including any extension data.
-func (cc *ChatChannel) OpenOutboundResult(err error, crm *Protocol_Data_Control.ChannelResult) {
-	if err == nil {
-		if crm.GetOpened() {
-			cc.channel.Pending = false
-		}
-	}
-}
-
-// Packet is called for each raw packet received on this channel.
-func (cc *ChatChannel) Packet(data []byte) {
-	if !cc.channel.Pending {
-		res := new(Protocol_Data_Chat.Packet)
-		err := proto.Unmarshal(data, res)
-		if err == nil {
-			if res.GetChatMessage() != nil {
-				ack := cc.Handler.ChatMessage(res.GetChatMessage().GetMessageId(), time.Now(), res.GetChatMessage().GetMessageText())
-				if ack {
-					cc.Acknowledge(res.GetChatMessage().GetMessageId())
-				} else {
-					//XXX
-				}
-			} else if res.GetChatAcknowledge() != nil {
-				cc.Handler.ChatMessageAck(res.GetChatMessage().GetMessageId())
-			}
-			// XXX?
-		}
-	}
-}

channels/chatchannel_test.go

@@ -1,124 +0,0 @@
-package channels
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/chat"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"testing"
-	"time"
-)
-
-func TestChatChannelOptions(t *testing.T) {
-	chatChannel := new(ChatChannel)
-
-	if chatChannel.Type() != "im.ricochet.chat" {
-		t.Errorf("ChatChannel has wrong type %s", chatChannel.Type())
-	}
-
-	if chatChannel.OnlyClientCanOpen() {
-		t.Errorf("ChatChannel should be able to be opened by everyone")
-	}
-	if !chatChannel.Singleton() {
-		t.Errorf("ChatChannel should be a Singelton")
-	}
-	if chatChannel.Bidirectional() {
-		t.Errorf("ChatChannel should not be bidirectional")
-	}
-	if chatChannel.RequiresAuthentication() != "im.ricochet.auth.hidden-service" {
-		t.Errorf("ChatChannel should require im.ricochet.auth.hidden-service. Instead requires: %s", chatChannel.RequiresAuthentication())
-	}
-}
-
-func TestChatChannelOpenInbound(t *testing.T) {
-	messageBuilder := new(utils.MessageBuilder)
-	ocm := messageBuilder.OpenChannel(2, "im.ricochet.chat")
-
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ocm[:], res)
-	opm := res.GetOpenChannel()
-
-	chatChannel := new(ChatChannel)
-	channel := Channel{ID: 1}
-	response, err := chatChannel.OpenInbound(&channel, opm)
-
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-	} else {
-		t.Errorf("Error while parsing chatchannel openinbound output: %v", err)
-	}
-}
-
-func TestChatChannelOpenOutbound(t *testing.T) {
-	chatChannel := new(ChatChannel)
-	channel := Channel{ID: 1}
-	response, err := chatChannel.OpenOutbound(&channel)
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-		if res.GetOpenChannel() != nil {
-			// XXX
-		} else {
-			t.Errorf("ChatChannel OpenOutbound was not an OpenChannelRequest %v", err)
-		}
-	} else {
-		t.Errorf("Error while parsing openputput output: %v", err)
-	}
-}
-
-type TestChatChannelHandler struct {
-}
-
-func (tcch *TestChatChannelHandler) ChatMessage(messageID uint32, when time.Time, message string) bool {
-	return true
-}
-
-func (tcch *TestChatChannelHandler) ChatMessageAck(messageID uint32) {
-
-}
-
-func TestChatChannelOperations(t *testing.T) {
-
-	// We test OpenOutboundElsewhere
-	chatChannel := new(ChatChannel)
-	chatChannel.Handler = new(TestChatChannelHandler)
-	channel := Channel{ID: 5}
-	channel.SendMessage = func(data []byte) {
-		res := new(Protocol_Data_Chat.Packet)
-		err := proto.Unmarshal(data, res)
-		if res.GetChatMessage() != nil {
-			if err == nil {
-				if res.GetChatMessage().GetMessageId() != 0 {
-					t.Log("Got Message ID:", res.GetChatMessage().GetMessageId())
-					return
-				}
-				t.Errorf("message id was 0 should be random")
-				return
-			}
-			t.Errorf("error sending chat message: %v", err)
-		}
-	}
-	chatChannel.OpenOutbound(&channel)
-
-	messageBuilder := new(utils.MessageBuilder)
-	ack := messageBuilder.AckOpenChannel(5)
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ack[:], res)
-	cr := res.GetChannelResult()
-
-	chatChannel.OpenOutboundResult(nil, cr)
-	if channel.Pending {
-		t.Errorf("After Successful Result ChatChannel Is Still Pending")
-	}
-
-	chat := messageBuilder.ChatMessage("message text", 0)
-	chatChannel.Packet(chat)
-
-	chatChannel.SendMessage("hello")
-
-}

channels/contactrequestchannel.go

@@ -1,154 +0,0 @@
-package channels
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/contact"
-	"github.com/s-rah/go-ricochet/wire/control"
-)
-
-// Defining Versions
-const (
-	InvalidContactNameError    = utils.Error("InvalidContactNameError")
-	InvalidContactMessageError = utils.Error("InvalidContactMessageError")
-	InvalidContactRequestError = utils.Error("InvalidContactRequestError")
-)
-
-// ContactRequestChannel implements the ChannelHandler interface for a channel of
-// type "im.ricochet.contact.request". The channel may be inbound or outbound.
-// a ContactRequestChannelHandler implementation to handle chat events.
-type ContactRequestChannel struct {
-	// Methods of Handler are called for chat events on this channel
-	Handler ContactRequestChannelHandler
-	channel *Channel
-}
-
-// ContactRequestChannelHandler is implemented by an application type to receive
-// events from a ContactRequestChannel.
-//
-// Note that ContactRequestChannelHandler is composable with other interfaces, including
-// ConnectionHandler; there is no need to use a distinct type as a
-// ContactRequestChannelHandler.
-type ContactRequestChannelHandler interface {
-	GetContactDetails() (string, string)
-	ContactRequest(name string, message string) string
-	ContactRequestRejected()
-	ContactRequestAccepted()
-	ContactRequestError()
-}
-
-// OnlyClientCanOpen - only clients can open contact requests
-func (crc *ContactRequestChannel) OnlyClientCanOpen() bool {
-	return true
-}
-
-// Singleton - only one contact request can be opened per side
-func (crc *ContactRequestChannel) Singleton() bool {
-	return true
-}
-
-// Bidirectional - only clients can send messages
-func (crc *ContactRequestChannel) Bidirectional() bool {
-	return false
-}
-
-// RequiresAuthentication - contact requests require hidden service auth
-func (crc *ContactRequestChannel) RequiresAuthentication() string {
-	return "im.ricochet.auth.hidden-service"
-}
-
-// Type returns the type string for this channel, e.g. "im.ricochet.chat".
-func (crc *ContactRequestChannel) Type() string {
-	return "im.ricochet.contact.request"
-}
-
-// Closed is called when the channel is closed for any reason.
-func (crc *ContactRequestChannel) Closed(err error) {
-
-}
-
-// OpenInbound is the first method called for an inbound channel request.
-// If an error is returned, the channel is rejected. If a RawMessage is
-// returned, it will be sent as the ChannelResult message.
-func (crc *ContactRequestChannel) OpenInbound(channel *Channel, oc *Protocol_Data_Control.OpenChannel) ([]byte, error) {
-	crc.channel = channel
-	contactRequestI, err := proto.GetExtension(oc, Protocol_Data_ContactRequest.E_ContactRequest)
-	if err == nil {
-		contactRequest, check := contactRequestI.(*Protocol_Data_ContactRequest.ContactRequest)
-		if check {
-
-			if len(contactRequest.GetNickname()) > int(Protocol_Data_ContactRequest.Limits_NicknameMaxCharacters) {
-				// Violation of the Protocol
-				return nil, InvalidContactNameError
-			}
-
-			if len(contactRequest.GetMessageText()) > int(Protocol_Data_ContactRequest.Limits_MessageMaxCharacters) {
-				// Violation of the Protocol
-				return nil, InvalidContactMessageError
-			}
-
-			result := crc.Handler.ContactRequest(contactRequest.GetNickname(), contactRequest.GetMessageText())
-			messageBuilder := new(utils.MessageBuilder)
-			return messageBuilder.ReplyToContactRequestOnResponse(channel.ID, result), nil
-		}
-	}
-	return nil, InvalidContactRequestError
-}
-
-// OpenOutbound is the first method called for an outbound channel request.
-// If an error is returned, the channel is not opened. If a RawMessage is
-// returned, it will be sent as the OpenChannel message.
-func (crc *ContactRequestChannel) OpenOutbound(channel *Channel) ([]byte, error) {
-	crc.channel = channel
-	name, message := crc.Handler.GetContactDetails()
-	messageBuilder := new(utils.MessageBuilder)
-	return messageBuilder.OpenContactRequestChannel(channel.ID, name, message), nil
-}
-
-// OpenOutboundResult is called when a response is received for an
-// outbound OpenChannel request. If `err` is non-nil, the channel was
-// rejected and Closed will be called immediately afterwards. `raw`
-// contains the raw protocol message including any extension data.
-func (crc *ContactRequestChannel) OpenOutboundResult(err error, crm *Protocol_Data_Control.ChannelResult) {
-	if err == nil {
-		if crm.GetOpened() {
-			responseI, err := proto.GetExtension(crm, Protocol_Data_ContactRequest.E_Response)
-			if err == nil {
-				response, check := responseI.(*Protocol_Data_ContactRequest.Response)
-				if check {
-					crc.handleStatus(response.GetStatus().String())
-					return
-				}
-			}
-		}
-	}
-	crc.channel.SendMessage([]byte{})
-}
-
-func (crc *ContactRequestChannel) handleStatus(status string) {
-	switch status {
-	case "Accepted":
-		crc.Handler.ContactRequestAccepted()
-	case "Pending":
-		break
-	case "Rejected":
-		crc.Handler.ContactRequestRejected()
-		break
-	case "Error":
-		crc.Handler.ContactRequestError()
-		break
-	}
-}
-
-// Packet is called for each raw packet received on this channel.
-func (crc *ContactRequestChannel) Packet(data []byte) {
-	if !crc.channel.Pending {
-		response := new(Protocol_Data_ContactRequest.Response)
-		err := proto.Unmarshal(data, response)
-		if err == nil {
-			crc.handleStatus(response.GetStatus().String())
-			return
-		}
-	}
-	crc.channel.SendMessage([]byte{})
-}

channels/contactrequestchannel_test.go

@@ -1,226 +0,0 @@
-package channels
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/contact"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"testing"
-)
-
-type TestContactRequestHandler struct {
-	Received bool
-}
-
-func (tcrh *TestContactRequestHandler) GetContactDetails() (string, string) {
-	return "", ""
-}
-
-func (tcrh *TestContactRequestHandler) ContactRequest(name string, message string) string {
-	if name == "test_nickname" && message == "test_message" {
-		tcrh.Received = true
-	}
-	return "Pending"
-}
-
-func (tcrh *TestContactRequestHandler) ContactRequestRejected() {
-}
-func (tcrh *TestContactRequestHandler) ContactRequestAccepted() {
-}
-func (tcrh *TestContactRequestHandler) ContactRequestError() {
-}
-
-func TestContactRequestOptions(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-
-	if contactRequestChannel.Type() != "im.ricochet.contact.request" {
-		t.Errorf("ContactRequestChannel has wrong type %s", contactRequestChannel.Type())
-	}
-
-	if !contactRequestChannel.OnlyClientCanOpen() {
-		t.Errorf("ContactRequestChannel Should be Client Open Only")
-	}
-	if !contactRequestChannel.Singleton() {
-		t.Errorf("ContactRequestChannel Should be a Singelton")
-	}
-	if contactRequestChannel.Bidirectional() {
-		t.Errorf("ContactRequestChannel Should not be bidirectional")
-	}
-	if contactRequestChannel.RequiresAuthentication() != "im.ricochet.auth.hidden-service" {
-		t.Errorf("ContactRequestChannel should requires im.ricochet.auth.hidden-service Authentication. Instead defines: %s", contactRequestChannel.RequiresAuthentication())
-	}
-}
-
-func TestContactRequestOpenOutbound(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	response, err := contactRequestChannel.OpenOutbound(&channel)
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-		if res.GetOpenChannel() != nil {
-			// XXX
-		} else {
-			t.Errorf("ContactReuqest OpenOutbound was not an OpenChannelRequest %v", err)
-		}
-	} else {
-		t.Errorf("Error while parsing openputput output: %v", err)
-	}
-}
-
-func TestContactRequestOpenOutboundResult(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	contactRequestChannel.OpenOutbound(&channel)
-
-	messageBuilder := new(utils.MessageBuilder)
-	ack := messageBuilder.ReplyToContactRequestOnResponse(1, "Accepted")
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ack[:], res)
-	cr := res.GetChannelResult()
-
-	contactRequestChannel.OpenOutboundResult(nil, cr)
-
-}
-
-func TestContactRequestOpenInbound(t *testing.T) {
-	opm := BuildOpenChannel("test_nickname", "test_message")
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	response, err := contactRequestChannel.OpenInbound(&channel, opm)
-
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-
-		responseI, err := proto.GetExtension(res.GetChannelResult(), Protocol_Data_ContactRequest.E_Response)
-		if err == nil {
-			response, check := responseI.(*Protocol_Data_ContactRequest.Response)
-			if check {
-				if response.GetStatus().String() != "Pending" {
-					t.Errorf("Contact Request Response should have been Pending, but instead was: %v", response.GetStatus().String())
-				}
-			} else {
-				t.Errorf("Error while parsing openinbound output: %v", err)
-			}
-		} else {
-			t.Errorf("Error while parsing openinbound output: %v", err)
-		}
-	} else {
-		t.Errorf("Error while parsing openinbound output: %v", err)
-	}
-
-	if !handler.Received {
-		t.Errorf("Contact Request was not received by Handler")
-	}
-}
-
-func TestContactRequestPacket(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	contactRequestChannel.OpenOutbound(&channel)
-
-	messageBuilder := new(utils.MessageBuilder)
-	ack := messageBuilder.ReplyToContactRequestOnResponse(1, "Pending")
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ack[:], res)
-	cr := res.GetChannelResult()
-
-	contactRequestChannel.OpenOutboundResult(nil, cr)
-
-	ackp := messageBuilder.ReplyToContactRequest(1, "Accepted")
-	contactRequestChannel.Packet(ackp)
-}
-
-func TestContactRequestRejected(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	contactRequestChannel.OpenOutbound(&channel)
-
-	messageBuilder := new(utils.MessageBuilder)
-	ack := messageBuilder.ReplyToContactRequestOnResponse(1, "Pending")
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ack[:], res)
-	cr := res.GetChannelResult()
-
-	contactRequestChannel.OpenOutboundResult(nil, cr)
-
-	ackp := messageBuilder.ReplyToContactRequest(1, "Rejected")
-	contactRequestChannel.Packet(ackp)
-}
-
-func TestContactRequestError(t *testing.T) {
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	contactRequestChannel.OpenOutbound(&channel)
-
-	messageBuilder := new(utils.MessageBuilder)
-	ack := messageBuilder.ReplyToContactRequestOnResponse(1, "Pending")
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ack[:], res)
-	cr := res.GetChannelResult()
-
-	contactRequestChannel.OpenOutboundResult(nil, cr)
-
-	ackp := messageBuilder.ReplyToContactRequest(1, "Error")
-	contactRequestChannel.Packet(ackp)
-}
-
-func BuildOpenChannel(nickname string, message string) *Protocol_Data_Control.OpenChannel {
-	// Construct the Open Authentication Channel Message
-	messageBuilder := new(utils.MessageBuilder)
-	ocm := messageBuilder.OpenContactRequestChannel(1, nickname, message)
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ocm[:], res)
-	return res.GetOpenChannel()
-}
-
-func TestInvalidNickname(t *testing.T) {
-	opm := BuildOpenChannel("this nickname is far too long at well over the limit of 30 characters", "test_message")
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	_, err := contactRequestChannel.OpenInbound(&channel, opm)
-	if err == nil {
-		t.Errorf("Open Inbound should have failed because of invalid nickname")
-	}
-}
-
-func TestInvalidMessage(t *testing.T) {
-	var message string
-	for i := 0; i < 2001; i++ {
-		message += "a"
-	}
-	opm := BuildOpenChannel("test_nickname", message)
-	contactRequestChannel := new(ContactRequestChannel)
-	handler := new(TestContactRequestHandler)
-	contactRequestChannel.Handler = handler
-	channel := Channel{ID: 1}
-	_, err := contactRequestChannel.OpenInbound(&channel, opm)
-	if err == nil {
-		t.Errorf("Open Inbound should have failed because of invalid message")
-	}
-}

channels/handler.go

@@ -1,51 +0,0 @@
-package channels
-
-import (
-	"github.com/s-rah/go-ricochet/wire/control"
-)
-
-// Handler reacts to low-level events on a protocol channel. There
-// should be a unique instance of a ChannelHandler type per channel.
-//
-// Applications generally don't need to implement ChannelHandler directly;
-// instead, use the built-in implementations for common channel types, and
-// their individual callback interfaces. ChannelHandler is useful when
-// implementing new channel types, or modifying low level default behavior.
-type Handler interface {
-	// Type returns the type string for this channel, e.g. "im.ricochet.chat".
-	Type() string
-
-	// Closed is called when the channel is closed for any reason.
-	Closed(err error)
-
-	// OnlyClientCanOpen indicates if only a client can open a given channel
-	OnlyClientCanOpen() bool
-
-	// Singleton indicates if a channel can only have one instance per direction
-	Singleton() bool
-
-	// Bidirectional indicates if messages can be send by either side
-	Bidirectional() bool
-
-	// RequiresAuthentication describes what authentication is needed for the channel
-	RequiresAuthentication() string
-
-	// OpenInbound is the first method called for an inbound channel request.
-	// If an error is returned, the channel is rejected. If a RawMessage is
-	// returned, it will be sent as the ChannelResult message.
-	OpenInbound(channel *Channel, raw *Protocol_Data_Control.OpenChannel) ([]byte, error)
-
-	// OpenOutbound is the first method called for an outbound channel request.
-	// If an error is returned, the channel is not opened. If a RawMessage is
-	// returned, it will be sent as the OpenChannel message.
-	OpenOutbound(channel *Channel) ([]byte, error)
-
-	// OpenOutboundResult is called when a response is received for an
-	// outbound OpenChannel request. If `err` is non-nil, the channel was
-	// rejected and Closed will be called immediately afterwards. `raw`
-	// contains the raw protocol message including any extension data.
-	OpenOutboundResult(err error, raw *Protocol_Data_Control.ChannelResult)
-
-	// Packet is called for each raw packet received on this channel.
-	Packet(data []byte)
-}

channels/hiddenserviceauthchannel.go

@@ -1,265 +0,0 @@
-package channels
-
-import (
-	"crypto"
-	"crypto/hmac"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/sha256"
-	"encoding/asn1"
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/auth"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"io"
-)
-
-const (
-	InvalidClientCookieError = utils.Error("InvalidClientCookieError")
-)
-
-// HiddenServiceAuthChannel wraps implementation of im.ricochet.auth.hidden-service"
-type HiddenServiceAuthChannel struct {
-	// Methods of Handler are called for events on this channel
-	Handler AuthChannelHandler
-	// PrivateKey must be set for client-side authentication channels
-	PrivateKey *rsa.PrivateKey
-	// Server Hostname must be set for client-side authentication channels
-	ServerHostname string
-
-	// Internal state
-	clientCookie, serverCookie [16]byte
-	channel                    *Channel
-}
-
-// AuthChannelHandler ...
-type AuthChannelHandler interface {
-	// Client
-	ClientAuthResult(accepted bool, isKnownContact bool)
-
-	// Server
-	ServerAuthValid(hostname string, publicKey rsa.PublicKey) (allowed, known bool)
-	ServerAuthInvalid(err error)
-}
-
-// Type returns the type string for this channel, e.g. "im.ricochet.chat".
-func (ah *HiddenServiceAuthChannel) Type() string {
-	return "im.ricochet.auth.hidden-service"
-}
-
-// Singleton Returns whether or not the given channel type is a singleton
-func (ah *HiddenServiceAuthChannel) Singleton() bool {
-	return true
-}
-
-// OnlyClientCanOpen ...
-func (ah *HiddenServiceAuthChannel) OnlyClientCanOpen() bool {
-	return true
-}
-
-// Bidirectional Returns whether or not the given channel allows anyone to send messages
-func (ah *HiddenServiceAuthChannel) Bidirectional() bool {
-	return false
-}
-
-// RequiresAuthentication Returns whether or not the given channel type requires authentication
-func (ah *HiddenServiceAuthChannel) RequiresAuthentication() string {
-	return "none"
-}
-
-// Closed is called when the channel is closed for any reason.
-func (ah *HiddenServiceAuthChannel) Closed(err error) {
-
-}
-
-// OpenInbound is the first method called for an inbound channel request.
-// If an error is returned, the channel is rejected. If a RawMessage is
-// returned, it will be sent as the ChannelResult message.
-// Remote -> [Open Authentication Channel] -> Local
-func (ah *HiddenServiceAuthChannel) OpenInbound(channel *Channel, oc *Protocol_Data_Control.OpenChannel) ([]byte, error) {
-
-	if ah.PrivateKey == nil {
-		return nil, utils.PrivateKeyNotSetError
-	}
-
-	ah.channel = channel
-	clientCookie, _ := proto.GetExtension(oc, Protocol_Data_AuthHiddenService.E_ClientCookie)
-	if len(clientCookie.([]byte)[:]) != 16 {
-		// reutrn without opening channel.
-		return nil, InvalidClientCookieError
-	}
-	ah.AddClientCookie(clientCookie.([]byte)[:])
-	messageBuilder := new(utils.MessageBuilder)
-	channel.Pending = false
-	return messageBuilder.ConfirmAuthChannel(ah.channel.ID, ah.GenServerCookie()), nil
-}
-
-// OpenOutbound is the first method called for an outbound channel request.
-// If an error is returned, the channel is not opened. If a RawMessage is
-// returned, it will be sent as the OpenChannel message.
-// Local -> [Open Authentication Channel] -> Remote
-func (ah *HiddenServiceAuthChannel) OpenOutbound(channel *Channel) ([]byte, error) {
-
-	if ah.PrivateKey == nil {
-		return nil, utils.PrivateKeyNotSetError
-	}
-
-	ah.channel = channel
-	messageBuilder := new(utils.MessageBuilder)
-	return messageBuilder.OpenAuthenticationChannel(ah.channel.ID, ah.GenClientCookie()), nil
-}
-
-// OpenOutboundResult is called when a response is received for an
-// outbound OpenChannel request. If `err` is non-nil, the channel was
-// rejected and Closed will be called immediately afterwards. `raw`
-// contains the raw protocol message including any extension data.
-// Input: Remote -> [ChannelResult] -> {Client}
-// Output: {Client} -> [Proof] -> Remote
-func (ah *HiddenServiceAuthChannel) OpenOutboundResult(err error, crm *Protocol_Data_Control.ChannelResult) {
-
-	if err == nil {
-
-		if crm.GetOpened() {
-			serverCookie, _ := proto.GetExtension(crm, Protocol_Data_AuthHiddenService.E_ServerCookie)
-
-			if len(serverCookie.([]byte)[:]) != 16 {
-				ah.channel.SendMessage([]byte{})
-				return
-			}
-
-			ah.AddServerCookie(serverCookie.([]byte)[:])
-
-			publicKeyBytes, _ := asn1.Marshal(rsa.PublicKey{
-				N: ah.PrivateKey.PublicKey.N,
-				E: ah.PrivateKey.PublicKey.E,
-			})
-
-			clientHostname := utils.GetTorHostname(publicKeyBytes)
-			challenge := ah.GenChallenge(clientHostname, ah.ServerHostname)
-
-			signature, err := rsa.SignPKCS1v15(nil, ah.PrivateKey, crypto.SHA256, challenge)
-
-			if err != nil {
-				ah.channel.SendMessage([]byte{})
-				return
-			}
-
-			messageBuilder := new(utils.MessageBuilder)
-			proof := messageBuilder.Proof(publicKeyBytes, signature)
-			ah.channel.SendMessage(proof)
-		}
-	}
-}
-
-// Packet is called for each raw packet received on this channel.
-// Input: Remote -> [Proof] -> Client
-// OR
-// Input: Remote -> [Result] -> Client
-func (ah *HiddenServiceAuthChannel) Packet(data []byte) {
-	res := new(Protocol_Data_AuthHiddenService.Packet)
-	err := proto.Unmarshal(data[:], res)
-
-	if err != nil {
-		ah.channel.CloseChannel()
-		return
-	}
-
-	if res.GetProof() != nil && ah.channel.Direction == Inbound {
-		provisionalClientHostname := utils.GetTorHostname(res.GetProof().GetPublicKey())
-
-		publicKeyBytes, err := asn1.Marshal(rsa.PublicKey{
-			N: ah.PrivateKey.PublicKey.N,
-			E: ah.PrivateKey.PublicKey.E,
-		})
-
-		if err != nil {
-			ah.Handler.ServerAuthInvalid(err)
-			ah.channel.SendMessage([]byte{})
-			return
-		}
-
-		serverHostname := utils.GetTorHostname(publicKeyBytes)
-
-		publicKey := rsa.PublicKey{}
-		_, err = asn1.Unmarshal(res.GetProof().GetPublicKey(), &publicKey)
-		if err != nil {
-			ah.Handler.ServerAuthInvalid(err)
-			ah.channel.SendMessage([]byte{})
-			return
-		}
-
-		challenge := ah.GenChallenge(provisionalClientHostname, serverHostname)
-
-		err = rsa.VerifyPKCS1v15(&publicKey, crypto.SHA256, challenge[:], res.GetProof().GetSignature())
-
-		if err == nil {
-			// Signature is Good
-			accepted, isKnownContact := ah.Handler.ServerAuthValid(provisionalClientHostname, publicKey)
-
-			// Send Result
-			messageBuilder := new(utils.MessageBuilder)
-			result := messageBuilder.AuthResult(accepted, isKnownContact)
-			ah.channel.DelegateAuthorization()
-			ah.channel.SendMessage(result)
-		} else {
-			// Auth Failed
-			messageBuilder := new(utils.MessageBuilder)
-			result := messageBuilder.AuthResult(false, false)
-			ah.channel.SendMessage(result)
-			ah.Handler.ServerAuthInvalid(err)
-		}
-
-	} else if res.GetResult() != nil && ah.channel.Direction == Outbound {
-		ah.Handler.ClientAuthResult(res.GetResult().GetAccepted(), res.GetResult().GetIsKnownContact())
-		if res.GetResult().GetAccepted() {
-			ah.channel.DelegateAuthorization()
-		}
-	}
-
-	// Any other combination of packets is completely invalid
-	// Fail the Authorization right here.
-	ah.channel.CloseChannel()
-}
-
-// AddClientCookie adds a client cookie to the state.
-func (ah *HiddenServiceAuthChannel) AddClientCookie(cookie []byte) {
-	copy(ah.clientCookie[:], cookie[:16])
-}
-
-// AddServerCookie adds a server cookie to the state.
-func (ah *HiddenServiceAuthChannel) AddServerCookie(cookie []byte) {
-	copy(ah.serverCookie[:], cookie[:16])
-}
-
-// GenRandom generates a random 16byte cookie string.
-func (ah *HiddenServiceAuthChannel) GenRandom() [16]byte {
-	var cookie [16]byte
-	io.ReadFull(rand.Reader, cookie[:])
-	return cookie
-}
-
-// GenClientCookie generates and adds a client cookie to the state.
-func (ah *HiddenServiceAuthChannel) GenClientCookie() [16]byte {
-	ah.clientCookie = ah.GenRandom()
-	return ah.clientCookie
-}
-
-// GenServerCookie generates and adds a server cookie to the state.
-func (ah *HiddenServiceAuthChannel) GenServerCookie() [16]byte {
-	ah.serverCookie = ah.GenRandom()
-	return ah.serverCookie
-}
-
-// GenChallenge constructs the challenge parameter for the AuthHiddenService session.
-// The challenge is the a Sha256HMAC(clientHostname+serverHostname, key=clientCookie+serverCookie)
-func (ah *HiddenServiceAuthChannel) GenChallenge(clientHostname string, serverHostname string) []byte {
-	key := make([]byte, 32)
-	copy(key[0:16], ah.clientCookie[:])
-	copy(key[16:], ah.serverCookie[:])
-
-	value := []byte(clientHostname + serverHostname)
-	mac := hmac.New(sha256.New, key)
-	mac.Write(value)
-	hmac := mac.Sum(nil)
-	return hmac
-}

channels/hiddenserviceauthchannel_test.go

@@ -1,166 +0,0 @@
-package channels
-
-import (
-	"bytes"
-	"crypto/rsa"
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"testing"
-)
-
-func TestGenChallenge(t *testing.T) {
-	authHandler := new(HiddenServiceAuthChannel)
-	authHandler.AddClientCookie([]byte("abcdefghijklmnop"))
-	authHandler.AddServerCookie([]byte("qrstuvwxyz012345"))
-	challenge := authHandler.GenChallenge("test.onion", "notareal.onion")
-	expectedChallenge := []byte{0xf5, 0xdb, 0xfd, 0xf0, 0x3d, 0x94, 0x14, 0xf1, 0x4b, 0x37, 0x93, 0xe2, 0xa5, 0x11, 0x4a, 0x98, 0x31, 0x90, 0xea, 0xb8, 0x95, 0x7a, 0x2e, 0xaa, 0xd0, 0xd2, 0x0c, 0x74, 0x95, 0xba, 0xab, 0x73}
-	t.Log(challenge, expectedChallenge)
-	if bytes.Compare(challenge[:], expectedChallenge[:]) != 0 {
-		t.Errorf("HiddenServiceAuthChannel Challenge Is Invalid, Got %x, Expected %x", challenge, expectedChallenge)
-	}
-}
-
-func TestGenClientCookie(t *testing.T) {
-	authHandler := new(HiddenServiceAuthChannel)
-	clientCookie := authHandler.GenClientCookie()
-	if clientCookie != authHandler.clientCookie {
-		t.Errorf("HiddenServiceAuthChannel Client Cookies are Different %x %x", clientCookie, authHandler.clientCookie)
-	}
-}
-
-func TestGenServerCookie(t *testing.T) {
-	authHandler := new(HiddenServiceAuthChannel)
-	serverCookie := authHandler.GenServerCookie()
-	if serverCookie != authHandler.serverCookie {
-		t.Errorf("HiddenServiceAuthChannel Server Cookies are Different %x %x", serverCookie, authHandler.serverCookie)
-	}
-}
-
-func TestHiddenServiceAuthChannelOptions(t *testing.T) {
-	hiddenServiceAuthChannel := new(HiddenServiceAuthChannel)
-
-	if hiddenServiceAuthChannel.Type() != "im.ricochet.auth.hidden-service" {
-		t.Errorf("AuthHiddenService has wrong type %s", hiddenServiceAuthChannel.Type())
-	}
-
-	if !hiddenServiceAuthChannel.OnlyClientCanOpen() {
-		t.Errorf("AuthHiddenService Should be Client Open Only")
-	}
-	if !hiddenServiceAuthChannel.Singleton() {
-		t.Errorf("AuthHiddenService Should be a Singelton")
-	}
-	if hiddenServiceAuthChannel.Bidirectional() {
-		t.Errorf("AuthHiddenService Should not be bidirectional")
-	}
-	if hiddenServiceAuthChannel.RequiresAuthentication() != "none" {
-		t.Errorf("AuthHiddenService should require no authorization. Instead requires: %s", hiddenServiceAuthChannel.RequiresAuthentication())
-	}
-}
-
-func GetOpenAuthenticationChannelMessage() *Protocol_Data_Control.OpenChannel {
-	// Construct the Open Authentication Channel Message
-	messageBuilder := new(utils.MessageBuilder)
-	ocm := messageBuilder.OpenAuthenticationChannel(1, [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
-
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ocm[:], res)
-	return res.GetOpenChannel()
-}
-
-func TestAuthenticationOpenInbound(t *testing.T) {
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-	opm := GetOpenAuthenticationChannelMessage()
-	authHandler := new(HiddenServiceAuthChannel)
-	authHandler.PrivateKey = privateKey
-	channel := Channel{ID: 1}
-	response, err := authHandler.OpenInbound(&channel, opm)
-
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-
-		if res.GetChannelResult() == nil || !res.GetChannelResult().GetOpened() {
-			t.Errorf("Response not a Open Channel Result %v", res)
-		}
-	} else {
-		t.Errorf("HiddenServiceAuthChannel OpenOutbound Failed: %v", err)
-	}
-}
-
-func TestAuthenticationOpenOutbound(t *testing.T) {
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-	authHandler := new(HiddenServiceAuthChannel)
-	authHandler.PrivateKey = privateKey
-	channel := Channel{ID: 1}
-	response, err := authHandler.OpenOutbound(&channel)
-
-	if err == nil {
-		res := new(Protocol_Data_Control.Packet)
-		proto.Unmarshal(response[:], res)
-
-		if res.GetOpenChannel() == nil {
-			t.Errorf("Open Channel Packet not included %v", res)
-		}
-	} else {
-		t.Errorf("HiddenServiceAuthChannel OpenInbound Failed: %v", err)
-	}
-
-}
-
-type SimpleTestAuthHandler struct {
-}
-
-// Client
-func (stah *SimpleTestAuthHandler) ClientAuthResult(accepted bool, isKnownContact bool) {
-
-}
-
-// Server
-func (stah *SimpleTestAuthHandler) ServerAuthValid(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
-	return true, true
-}
-
-func (stah *SimpleTestAuthHandler) ServerAuthInvalid(err error) {
-
-}
-
-func TestAuthenticationOpenOutboundResult(t *testing.T) {
-
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-	authHandlerA := new(HiddenServiceAuthChannel)
-	authHandlerB := new(HiddenServiceAuthChannel)
-	simpleTestAuthHandler := new(SimpleTestAuthHandler)
-
-	authHandlerA.ServerHostname = "kwke2hntvyfqm7dr"
-	authHandlerA.PrivateKey = privateKey
-	authHandlerA.Handler = simpleTestAuthHandler
-	channelA := Channel{ID: 1, Direction: Outbound}
-	channelA.SendMessage = func(message []byte) {
-		authHandlerB.Packet(message)
-	}
-	channelA.DelegateAuthorization = func() {}
-	channelA.CloseChannel = func() {}
-	response, _ := authHandlerA.OpenOutbound(&channelA)
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(response[:], res)
-
-	authHandlerB.ServerHostname = "kwke2hntvyfqm7dr"
-	authHandlerB.PrivateKey = privateKey
-	authHandlerB.Handler = simpleTestAuthHandler
-	channelB := Channel{ID: 1, Direction: Inbound}
-	channelB.SendMessage = func(message []byte) {
-		authHandlerA.Packet(message)
-	}
-	channelB.DelegateAuthorization = func() {}
-	channelB.CloseChannel = func() {}
-	response, _ = authHandlerB.OpenInbound(&channelB, res.GetOpenChannel())
-	res = new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(response[:], res)
-
-	authHandlerA.OpenOutboundResult(nil, res.GetChannelResult())
-
-}

connection/autoconnectionhandler.go

@@ -1,93 +0,0 @@
-package connection
-
-import (
-	"crypto/rsa"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/utils"
-)
-
-// AutoConnectionHandler implements the ConnectionHandler interface on behalf of
-// the provided application type by automatically providing support for any
-// built-in channel type whose high level interface is implemented by the
-// application. For example, if the application's type implements the
-// ChatChannelHandler interface, `im.ricochet.chat` will be available to the peer.
-//
-// The application handler can be any other type. To override or augment any of
-// AutoConnectionHandler's behavior (such as adding new channel types, or reacting
-// to connection close events), this type can be embedded in the type that it serves.
-type AutoConnectionHandler struct {
-	handlerMap        map[string]func() channels.Handler
-	connection        *Connection
-	authResultChannel chan channels.AuthChannelResult
-	sach              func(hostname string, publicKey rsa.PublicKey) (allowed, known bool)
-}
-
-// Init ...
-// TODO: Split this into client and server init
-func (ach *AutoConnectionHandler) Init(privateKey *rsa.PrivateKey, serverHostname string) {
-
-	ach.handlerMap = make(map[string]func() channels.Handler)
-	ach.RegisterChannelHandler("im.ricochet.auth.hidden-service", func() channels.Handler {
-		hsau := new(channels.HiddenServiceAuthChannel)
-		hsau.PrivateKey = privateKey
-		hsau.Handler = ach
-		hsau.ServerHostname = serverHostname
-		return hsau
-	})
-	ach.authResultChannel = make(chan channels.AuthChannelResult)
-}
-
-// SetServerAuthHandler ...
-func (ach *AutoConnectionHandler) SetServerAuthHandler(sach func(hostname string, publicKey rsa.PublicKey) (allowed, known bool)) {
-	ach.sach = sach
-}
-
-// OnReady ...
-func (ach *AutoConnectionHandler) OnReady(oc *Connection) {
-	ach.connection = oc
-}
-
-// OnClosed is called when the OpenConnection has closed for any reason.
-func (ach *AutoConnectionHandler) OnClosed(err error) {
-}
-
-// WaitForAuthenticationEvent ...
-func (ach *AutoConnectionHandler) WaitForAuthenticationEvent() channels.AuthChannelResult {
-	return <-ach.authResultChannel
-}
-
-// ClientAuthResult ...
-func (ach *AutoConnectionHandler) ClientAuthResult(accepted bool, isKnownContact bool) {
-	ach.authResultChannel <- channels.AuthChannelResult{Accepted: accepted, IsKnownContact: isKnownContact}
-}
-
-// ServerAuthValid ...
-func (ach *AutoConnectionHandler) ServerAuthValid(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
-	// Do something
-	accepted, isKnownContact := ach.sach(hostname, publicKey)
-	ach.authResultChannel <- channels.AuthChannelResult{Hostname: hostname, Accepted: accepted, IsKnownContact: isKnownContact}
-	return accepted, isKnownContact
-}
-
-// ServerAuthInvalid ...
-func (ach *AutoConnectionHandler) ServerAuthInvalid(err error) {
-	ach.authResultChannel <- channels.AuthChannelResult{Accepted: false, IsKnownContact: false}
-}
-
-// RegisterChannelHandler ...
-func (ach *AutoConnectionHandler) RegisterChannelHandler(ctype string, handler func() channels.Handler) {
-	_, exists := ach.handlerMap[ctype]
-	if !exists {
-		ach.handlerMap[ctype] = handler
-	}
-}
-
-// OnOpenChannelRequest ...
-func (ach *AutoConnectionHandler) OnOpenChannelRequest(ctype string) (channels.Handler, error) {
-	handler, ok := ach.handlerMap[ctype]
-	if ok {
-		h := handler()
-		return h, nil
-	}
-	return nil, utils.UnknownChannelTypeError
-}

connection/autoconnectionhandler_test.go

@@ -1,36 +0,0 @@
-package connection
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"testing"
-)
-
-// Test sending valid packets
-func TestInit(t *testing.T) {
-	ach := new(AutoConnectionHandler)
-	privateKey, err := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-	ach.Init(privateKey, "")
-
-	// Construct the Open Authentication Channel Message
-	messageBuilder := new(utils.MessageBuilder)
-	ocm := messageBuilder.OpenAuthenticationChannel(1, [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
-
-	// We have just constructed this so there is little
-	// point in doing error checking here in the test
-	res := new(Protocol_Data_Control.Packet)
-	proto.Unmarshal(ocm[:], res)
-	opm := res.GetOpenChannel()
-	//ocmessage, _ := proto.Marshal(opm)
-	handler, err := ach.OnOpenChannelRequest(opm.GetChannelType())
-
-	if err == nil {
-		if handler.Type() != "im.ricochet.auth.hidden-service" {
-			t.Errorf("Failed to authentication handler: %v", handler.Type())
-		}
-	} else {
-		t.Errorf("Failed to build handler: %v", err)
-	}
-}

connection/channelmanager.go

@@ -1,114 +0,0 @@
-package connection
-
-import (
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/utils"
-)
-
-// ChannelManager encapsulates the logic for server and client side assignment
-// and removal of channels.
-type ChannelManager struct {
-	channels        map[int32]*channels.Channel
-	nextFreeChannel int32
-	isClient        bool
-}
-
-// NewClientChannelManager construsts a new channel manager enforcing behaviour
-// of a ricochet client
-func NewClientChannelManager() *ChannelManager {
-	channelManager := new(ChannelManager)
-	channelManager.channels = make(map[int32]*channels.Channel)
-	channelManager.nextFreeChannel = 1
-	channelManager.isClient = true
-	return channelManager
-}
-
-// NewServerChannelManager construsts a new channel manager enforcing behaviour
-// from a ricochet server
-func NewServerChannelManager() *ChannelManager {
-	channelManager := new(ChannelManager)
-	channelManager.channels = make(map[int32]*channels.Channel)
-	channelManager.nextFreeChannel = 2
-	channelManager.isClient = false
-	return channelManager
-}
-
-// OpenChannelRequest  constructs a channel type ready for processing given a request
-// from the client.
-func (cm *ChannelManager) OpenChannelRequest(chandler channels.Handler) (*channels.Channel, error) {
-	// Some channels only allow us to open one of them per connection
-	if chandler.Singleton() && cm.Channel(chandler.Type(), channels.Outbound) != nil {
-		return nil, utils.AttemptToOpenMoreThanOneSingletonChannelError
-	}
-
-	channel := new(channels.Channel)
-	channel.ID = cm.nextFreeChannel
-	cm.nextFreeChannel += 2
-	channel.Type = chandler.Type()
-	channel.Handler = &chandler
-	channel.Pending = true
-	channel.Direction = channels.Outbound
-	cm.channels[channel.ID] = channel
-	return channel, nil
-}
-
-// OpenChannelRequestFromPeer constructs a channel type ready for processing given a request
-// from the remote peer.
-func (cm *ChannelManager) OpenChannelRequestFromPeer(channelID int32, chandler channels.Handler) (*channels.Channel, error) {
-	if cm.isClient && (channelID%2) != 0 {
-		// Server is trying to open odd numbered channels
-		return nil, utils.ServerAttemptedToOpenEvenNumberedChannelError
-	} else if !cm.isClient && (channelID%2) == 0 {
-		// Server is trying to open odd numbered channels
-		return nil, utils.ClientAttemptedToOpenOddNumberedChannelError
-	}
-
-	_, exists := cm.channels[channelID]
-	if exists {
-		return nil, utils.ChannelIDIsAlreadyInUseError
-	}
-
-	// Some channels only allow us to open one of them per connection
-	if chandler.Singleton() && cm.Channel(chandler.Type(), channels.Inbound) != nil {
-		return nil, utils.AttemptToOpenMoreThanOneSingletonChannelError
-	}
-
-	channel := new(channels.Channel)
-	channel.ID = channelID
-	channel.Type = chandler.Type()
-	channel.Handler = &chandler
-
-	channel.Pending = true
-	channel.Direction = channels.Inbound
-	cm.channels[channelID] = channel
-	return channel, nil
-}
-
-// Channel finds an open or pending `type` channel in the direction `way` (Inbound
-// or Outbound), and returns the associated state. Returns nil if no matching channel
-// exists or if multiple matching channels exist.
-func (cm *ChannelManager) Channel(ctype string, way channels.Direction) *channels.Channel {
-	var foundChannel *channels.Channel
-	for _, channel := range cm.channels {
-		if (*channel.Handler).Type() == ctype && channel.Direction == way {
-			if foundChannel == nil {
-				foundChannel = channel
-			} else {
-				// we have found multiple channels.
-				return nil
-			}
-		}
-	}
-	return foundChannel
-}
-
-// GetChannel finds and returns a given channel if it is found
-func (cm *ChannelManager) GetChannel(channelID int32) (*channels.Channel, bool) {
-	channel, found := cm.channels[channelID]
-	return channel, found
-}
-
-// RemoveChannel removes a given channel id.
-func (cm *ChannelManager) RemoveChannel(channelID int32) {
-	delete(cm.channels, channelID)
-}

connection/channelmanager_test.go

@@ -1,62 +0,0 @@
-package connection
-
-import (
-	"github.com/s-rah/go-ricochet/channels"
-	"testing"
-)
-
-func TestClientManagerDuplicateChannel(t *testing.T) {
-	ccm := NewClientChannelManager()
-	chatChannel := new(channels.ChatChannel)
-	_, err := ccm.OpenChannelRequestFromPeer(2, chatChannel)
-	if err != nil {
-		t.Errorf("Opening ChatChannel should have succeeded, instead: %v", err)
-	}
-	_, err = ccm.OpenChannelRequestFromPeer(2, chatChannel)
-	if err == nil {
-		t.Errorf("Opening ChatChannel should have failed")
-	}
-
-	_, err = ccm.OpenChannelRequestFromPeer(4, chatChannel)
-	if err == nil {
-		t.Errorf("Opening ChatChannel should have failed because there should be only 1")
-	}
-}
-
-func TestClientManagerBadServer(t *testing.T) {
-	ccm := NewClientChannelManager()
-	// Servers are not allowed to open odd numbered channels
-	_, err := ccm.OpenChannelRequestFromPeer(3, nil)
-	if err == nil {
-		t.Errorf("OpenChannelRequestFromPeer should have failed")
-	}
-}
-
-func TestServerManagerBadClient(t *testing.T) {
-	scm := NewServerChannelManager()
-	// Clients are not allowed to open even numbered channels
-	_, err := scm.OpenChannelRequestFromPeer(2, nil)
-	if err == nil {
-		t.Errorf("OpenChannelRequestFromPeer should have failed")
-	}
-}
-
-func TestLocalDuplicate(t *testing.T) {
-	scm := NewServerChannelManager()
-	chatChannel := new(channels.ChatChannel)
-	channel, err := scm.OpenChannelRequest(chatChannel)
-	if err != nil {
-		t.Errorf("OpenChannelRequest should not have failed: %v", err)
-	}
-
-	_, err = scm.OpenChannelRequest(chatChannel)
-	if err == nil {
-		t.Errorf("OpenChannelRequest should have failed")
-	}
-
-	scm.RemoveChannel(channel.ID)
-	_, err = scm.OpenChannelRequest(chatChannel)
-	if err != nil {
-		t.Errorf("OpenChannelRequest should not have failed: %v", err)
-	}
-}

connection/connection.go

@@ -1,347 +0,0 @@
-package connection
-
-import (
-	"errors"
-	"fmt"
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/utils"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"io"
-	"log"
-)
-
-// Connection encapsulates the state required to maintain a connection to
-// a ricochet service.
-type Connection struct {
-	utils.RicochetNetwork
-
-	channelManager *ChannelManager
-
-	// Ricochet Network Loop
-	packetChannel chan utils.RicochetData
-	errorChannel  chan error
-
-	breakChannel       chan bool
-	breakResultChannel chan bool
-
-	unlockChannel         chan bool
-	unlockResponseChannel chan bool
-
-	messageBuilder utils.MessageBuilder
-	trace          bool
-
-	Conn           io.ReadWriteCloser
-	IsInbound      bool
-	Authentication map[string]bool
-	RemoteHostname string
-}
-
-func (rc *Connection) init() {
-
-	rc.packetChannel = make(chan utils.RicochetData)
-	rc.errorChannel = make(chan error)
-
-	rc.breakChannel = make(chan bool)
-	rc.breakResultChannel = make(chan bool)
-
-	rc.unlockChannel = make(chan bool)
-	rc.unlockResponseChannel = make(chan bool)
-
-	rc.Authentication = make(map[string]bool)
-	go rc.start()
-}
-
-// NewInboundConnection creates a new Connection struct
-// modelling an Inbound Connection
-func NewInboundConnection(conn io.ReadWriteCloser) *Connection {
-	rc := new(Connection)
-	rc.Conn = conn
-	rc.IsInbound = true
-	rc.init()
-	rc.channelManager = NewServerChannelManager()
-	return rc
-}
-
-// NewOutboundConnection creates a new Connection struct
-// modelling an Inbound Connection
-func NewOutboundConnection(conn io.ReadWriteCloser, remoteHostname string) *Connection {
-	rc := new(Connection)
-	rc.Conn = conn
-	rc.IsInbound = false
-	rc.init()
-	rc.RemoteHostname = remoteHostname
-	rc.channelManager = NewClientChannelManager()
-	return rc
-}
-
-func (rc *Connection) TraceLog(enabled bool) {
-	rc.trace = enabled
-}
-
-// start
-func (rc *Connection) start() {
-	for {
-		packet, err := rc.RecvRicochetPacket(rc.Conn)
-		if err != nil {
-			rc.errorChannel <- err
-			return
-		}
-		rc.packetChannel <- packet
-	}
-}
-
-// Do allows any function utilizing Connection to be run safetly.
-// All operations which require access to Connection managed resources should
-// use Do()
-func (rc *Connection) Do(do func() error) error {
-	// Force process to soft-break so we can lock
-	rc.traceLog("request unlocking of process loop for do()")
-	rc.unlockChannel <- true
-	rc.traceLog("process loop is unlocked for do()")
-	ret := do()
-	rc.traceLog("giving up lock process loop after do() ")
-	rc.unlockResponseChannel <- true
-	return ret
-}
-
-// RequestOpenChannel sends an OpenChannel message to the remote client.
-// and error is returned only if the requirements for opening this channel
-// are not met on the local side (a nill error return does not mean the
-// channel was opened successfully)
-func (rc *Connection) RequestOpenChannel(ctype string, handler Handler) error {
-	rc.traceLog(fmt.Sprintf("requesting open channel of type %s", ctype))
-	return rc.Do(func() error {
-		chandler, err := handler.OnOpenChannelRequest(ctype)
-
-		if err != nil {
-			rc.traceLog(fmt.Sprintf("failed to request open channel of type %v", err))
-			return err
-		}
-
-		// Check that we have the authentication already
-		if chandler.RequiresAuthentication() != "none" {
-			// Enforce Authentication Check.
-			_, authed := rc.Authentication[chandler.RequiresAuthentication()]
-			if !authed {
-				return utils.UnauthorizedActionError
-			}
-		}
-
-		channel, err := rc.channelManager.OpenChannelRequest(chandler)
-
-		if err != nil {
-			rc.traceLog(fmt.Sprintf("failed to reqeust open channel of type %v", err))
-			return err
-		}
-
-		channel.SendMessage = func(message []byte) {
-			rc.SendRicochetPacket(rc.Conn, channel.ID, message)
-		}
-		channel.DelegateAuthorization = func() {
-			rc.Authentication[chandler.Type()] = true
-		}
-		channel.CloseChannel = func() {
-			rc.SendRicochetPacket(rc.Conn, channel.ID, []byte{})
-			rc.channelManager.RemoveChannel(channel.ID)
-		}
-		response, err := chandler.OpenOutbound(channel)
-		if err == nil {
-			rc.traceLog(fmt.Sprintf("requested open channel of type %s", ctype))
-			rc.SendRicochetPacket(rc.Conn, 0, response)
-		} else {
-			rc.traceLog(fmt.Sprintf("failed to reqeust open channel of type %v", err))
-			rc.channelManager.RemoveChannel(channel.ID)
-		}
-		return nil
-	})
-}
-
-// Process receives socket and protocol events for the connection. Methods
-// of the application-provided `handler` will be called from this goroutine
-// for all events.
-//
-// Process must be running in order to handle any events on the connection,
-// including connection close.
-//
-// Process blocks until the connection is closed or until Break() is called.
-// If the connection is closed, a non-nil error is returned.
-func (rc *Connection) Process(handler Handler) error {
-	rc.traceLog("entering process loop")
-	handler.OnReady(rc)
-	breaked := false
-	for !breaked {
-
-		var packet utils.RicochetData
-		select {
-		case <-rc.unlockChannel:
-			<-rc.unlockResponseChannel
-			continue
-		case <-rc.breakChannel:
-			rc.traceLog("process has ended after break")
-			breaked = true
-			continue
-		case packet = <-rc.packetChannel:
-			break
-		case err := <-rc.errorChannel:
-			rc.Conn.Close()
-			handler.OnClosed(err)
-			return err
-		}
-
-		if packet.Channel == 0 {
-			rc.traceLog(fmt.Sprintf("received control packet on channel %d", packet.Channel))
-			res := new(Protocol_Data_Control.Packet)
-			err := proto.Unmarshal(packet.Data[:], res)
-			if err == nil {
-				rc.controlPacket(handler, res)
-			}
-		} else {
-			// Let's check to see if we have defined this channel.
-			channel, found := rc.channelManager.GetChannel(packet.Channel)
-			if found {
-				if len(packet.Data) == 0 {
-					rc.traceLog(fmt.Sprintf("removing channel %d", packet.Channel))
-					rc.channelManager.RemoveChannel(packet.Channel)
-					(*channel.Handler).Closed(utils.ChannelClosedByPeerError)
-				} else {
-					rc.traceLog(fmt.Sprintf("received packet on %v channel %d", (*channel.Handler).Type(), packet.Channel))
-					// Send The Ricochet Packet to the Handler
-					(*channel.Handler).Packet(packet.Data[:])
-				}
-			} else {
-				// When a non-zero packet is received for an unknown
-				// channel, the recipient responds by closing
-				// that channel.
-				rc.traceLog(fmt.Sprintf("received packet on unknown channel %d. closing.", packet.Channel))
-				if len(packet.Data) != 0 {
-					rc.SendRicochetPacket(rc.Conn, packet.Channel, []byte{})
-				}
-			}
-		}
-	}
-
-	rc.breakResultChannel <- true
-	return nil
-
-}
-
-func (rc *Connection) controlPacket(handler Handler, res *Protocol_Data_Control.Packet) {
-
-	if res.GetOpenChannel() != nil {
-
-		opm := res.GetOpenChannel()
-		chandler, err := handler.OnOpenChannelRequest(opm.GetChannelType())
-
-		if err != nil {
-
-			response := rc.messageBuilder.RejectOpenChannel(opm.GetChannelIdentifier(), "UnknownTypeError")
-			rc.SendRicochetPacket(rc.Conn, 0, response)
-			return
-		}
-
-		// Check that we have the authentication already
-		if chandler.RequiresAuthentication() != "none" {
-			rc.traceLog(fmt.Sprintf("channel %v requires authorization of type %v", chandler.Type(), chandler.RequiresAuthentication()))
-			// Enforce Authentication Check.
-			_, authed := rc.Authentication[chandler.RequiresAuthentication()]
-			if !authed {
-				rc.SendRicochetPacket(rc.Conn, 0, []byte{})
-				rc.traceLog(fmt.Sprintf("do not have required authorization to open channel type %v", chandler.Type()))
-				return
-			}
-			rc.traceLog("succeeded authorization check")
-		}
-
-		channel, err := rc.channelManager.OpenChannelRequestFromPeer(opm.GetChannelIdentifier(), chandler)
-
-		if err == nil {
-
-			channel.SendMessage = func(message []byte) {
-				rc.SendRicochetPacket(rc.Conn, channel.ID, message)
-			}
-			channel.DelegateAuthorization = func() {
-				rc.Authentication[chandler.Type()] = true
-			}
-			channel.CloseChannel = func() {
-				rc.SendRicochetPacket(rc.Conn, channel.ID, []byte{})
-				rc.channelManager.RemoveChannel(channel.ID)
-			}
-
-			response, err := chandler.OpenInbound(channel, opm)
-			if err == nil && channel.Pending == false {
-				rc.traceLog(fmt.Sprintf("opening channel %v on %v", channel.Type, channel.ID))
-				rc.SendRicochetPacket(rc.Conn, 0, response)
-			} else {
-				rc.traceLog(fmt.Sprintf("removing channel %v", channel.ID))
-				rc.channelManager.RemoveChannel(channel.ID)
-				rc.SendRicochetPacket(rc.Conn, 0, []byte{})
-			}
-		} else {
-			// Send Error Packet
-			response := rc.messageBuilder.RejectOpenChannel(opm.GetChannelIdentifier(), "GenericError")
-			rc.traceLog(fmt.Sprintf("sending reject open channel for %v", opm.GetChannelIdentifier()))
-			rc.SendRicochetPacket(rc.Conn, 0, response)
-
-		}
-	} else if res.GetChannelResult() != nil {
-		cr := res.GetChannelResult()
-		id := cr.GetChannelIdentifier()
-
-		channel, found := rc.channelManager.GetChannel(id)
-
-		if !found {
-			rc.traceLog(fmt.Sprintf("channel result recived for unknown channel: %v", channel.Type, id))
-			return
-		}
-
-		if cr.GetOpened() {
-			rc.traceLog(fmt.Sprintf("channel of type %v opened on %v", channel.Type, id))
-			(*channel.Handler).OpenOutboundResult(nil, cr)
-		} else {
-			rc.traceLog(fmt.Sprintf("channel of type %v rejected on %v", channel.Type, id))
-			(*channel.Handler).OpenOutboundResult(errors.New(""), cr)
-		}
-
-	} else if res.GetKeepAlive() != nil {
-		// XXX Though not currently part of the protocol
-		// We should likely put these calls behind
-		// authentication.
-		rc.traceLog("received keep alive packet")
-		if res.GetKeepAlive().GetResponseRequested() {
-			messageBuilder := new(utils.MessageBuilder)
-			raw := messageBuilder.KeepAlive(true)
-			rc.traceLog("sending keep alive response")
-			rc.SendRicochetPacket(rc.Conn, 0, raw)
-		}
-	} else if res.GetEnableFeatures() != nil {
-		rc.traceLog("received features enabled packet")
-		messageBuilder := new(utils.MessageBuilder)
-		raw := messageBuilder.FeaturesEnabled([]string{})
-		rc.traceLog("sending featured enabled empty response")
-		rc.SendRicochetPacket(rc.Conn, 0, raw)
-	} else if res.GetFeaturesEnabled() != nil {
-		// TODO We should never send out an enabled features
-		// request.
-		rc.traceLog("sending unsolicited features enabled response")
-	}
-}
-
-func (rc *Connection) traceLog(message string) {
-	if rc.trace {
-		log.Printf(message)
-	}
-}
-
-// Break causes Process() to return, but does not close the underlying connection
-func (rc *Connection) Break() {
-	rc.traceLog("breaking out of process loop")
-	rc.breakChannel <- true
-	<-rc.breakResultChannel // Wait for Process to End
-}
-
-// Channel is a convienciance method for returning a given channel to the caller
-// of Process() - TODO - this is kind of ugly.
-func (rc *Connection) Channel(ctype string, way channels.Direction) *channels.Channel {
-	return rc.channelManager.Channel(ctype, way)
-}

connection/connection_test.go

@@ -1,89 +0,0 @@
-package connection
-
-import (
-	"crypto/rsa"
-	"github.com/s-rah/go-ricochet/utils"
-	"net"
-	"testing"
-	"time"
-)
-
-// Server
-func ServerAuthValid(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
-	return true, true
-}
-
-func TestProcessAuthAsServer(t *testing.T) {
-
-	ln, _ := net.Listen("tcp", "127.0.0.1:0")
-
-	go func() {
-		cconn, _ := net.Dial("tcp", ln.Addr().String())
-
-		orc := NewOutboundConnection(cconn, "kwke2hntvyfqm7dr")
-		orc.TraceLog(true)
-		privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-		known, err := HandleOutboundConnection(orc).ProcessAuthAsClient(privateKey)
-		if err != nil {
-			t.Errorf("Error while testing ProcessAuthAsClient (in ProcessAuthAsServer) %v", err)
-			return
-		} else if !known {
-			t.Errorf("Client should have been known to the server, instead known was: %v", known)
-			return
-		}
-	}()
-
-	conn, _ := ln.Accept()
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-	rc := NewInboundConnection(conn)
-	err := HandleInboundConnection(rc).ProcessAuthAsServer(privateKey, ServerAuthValid)
-	if err != nil {
-		t.Errorf("Error while testing ProcessAuthAsServer: %v", err)
-	}
-}
-
-func TestProcessServerAuthFail(t *testing.T) {
-
-	ln, _ := net.Listen("tcp", "127.0.0.1:0")
-
-	go func() {
-		cconn, _ := net.Dial("tcp", ln.Addr().String())
-
-		orc := NewOutboundConnection(cconn, "kwke2hntvyfqm7dr")
-		privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-		HandleOutboundConnection(orc).ProcessAuthAsClient(privateKey)
-
-	}()
-
-	conn, _ := ln.Accept()
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key_auth_fail_test")
-
-	rc := NewInboundConnection(conn)
-	err := HandleInboundConnection(rc).ProcessAuthAsServer(privateKey, ServerAuthValid)
-	if err == nil {
-		t.Errorf("Error while testing ProcessAuthAsServer - should have failed %v", err)
-	}
-}
-
-func TestProcessAuthTimeout(t *testing.T) {
-
-	ln, _ := net.Listen("tcp", "127.0.0.1:0")
-
-	go func() {
-		net.Dial("tcp", ln.Addr().String())
-		time.Sleep(16 * time.Second)
-
-	}()
-
-	conn, _ := ln.Accept()
-	privateKey, _ := utils.LoadPrivateKeyFromFile("../testing/private_key")
-
-	rc := NewInboundConnection(conn)
-	err := HandleInboundConnection(rc).ProcessAuthAsServer(privateKey, ServerAuthValid)
-	if err != utils.ActionTimedOutError {
-		t.Errorf("Error while testing TestProcessAuthTimeout - Should have timed out after 15 seconds")
-	}
-}

connection/handler.go

@@ -1,28 +0,0 @@
-package connection
-
-import (
-	"github.com/s-rah/go-ricochet/channels"
-)
-
-// Handler reacts to low-level events on a protocol connection.
-// There should be a unique instance of a ConnectionHandler type per
-// OpenConnection.
-type Handler interface {
-	// OnReady is called when the connection begins using this handler.
-	OnReady(oc *Connection)
-
-	// OnClosed is called when the OpenConnection has closed for any reason.
-	OnClosed(err error)
-
-	// OpenChannelRequest is called when the peer asks to open a channel of
-	// `type`. `raw` contains the protocol OpenChannel message including any
-	// extension data. If this channel type is recognized and allowed by this
-	// connection in this state, return a type implementing ChannelHandler for
-	// events related to this channel. Returning an error or nil rejects the
-	// channel.
-	//
-	// Channel type handlers may implement additional state and sanity checks.
-	// A non-nil return from this function does not guarantee that the channel
-	// will be opened.
-	OnOpenChannelRequest(ctype string) (channels.Handler, error)
-}

connection/inboundconnectionhandler.go

@@ -1,66 +0,0 @@
-package connection
-
-import (
-	"crypto/rsa"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/policies"
-	"github.com/s-rah/go-ricochet/utils"
-)
-
-// InboundConnectionHandler is a convieniance wrapper for handling inbound
-// connections
-type InboundConnectionHandler struct {
-	connection *Connection
-}
-
-// HandleInboundConnection returns an InboundConnectionHandler given a connection
-func HandleInboundConnection(c *Connection) *InboundConnectionHandler {
-	ich := new(InboundConnectionHandler)
-	ich.connection = c
-	return ich
-}
-
-// ProcessAuthAsServer blocks until authentication has succeeded, failed, or the
-// connection is closed. A non-nil error is returned in all cases other than successful
-// and accepted authentication.
-//
-// ProcessAuthAsServer cannot be called at the same time as any other call to a Process
-// function. Another Process function must be called after this function successfully
-// returns to continue handling connection events.
-//
-// The acceptCallback function is called after receiving a valid authentication proof
-// with the client's authenticated hostname and public key. acceptCallback must return
-// true to accept authentication and allow the connection to continue, and also returns a
-// boolean indicating whether the contact is known and recognized. Unknown contacts will
-// assume they are required to send a contact request before any other activity.
-func (ich *InboundConnectionHandler) ProcessAuthAsServer(privateKey *rsa.PrivateKey, sach func(hostname string, publicKey rsa.PublicKey) (allowed, known bool)) error {
-
-	if privateKey == nil {
-		return utils.PrivateKeyNotSetError
-	}
-
-	ach := new(AutoConnectionHandler)
-	ach.Init(privateKey, ich.connection.RemoteHostname)
-	ach.SetServerAuthHandler(sach)
-
-	var authResult channels.AuthChannelResult
-	go func() {
-		authResult = ach.WaitForAuthenticationEvent()
-		ich.connection.Break()
-	}()
-
-	policy := policies.UnknownPurposeTimeout
-	err := policy.ExecuteAction(func() error {
-		return ich.connection.Process(ach)
-	})
-
-	if err == nil {
-		if authResult.Accepted == true {
-			ich.connection.RemoteHostname = authResult.Hostname
-			return nil
-		}
-		return utils.ClientFailedToAuthenticateError
-	}
-
-	return err
-}

connection/outboundconnectionhandler.go

@@ -1,64 +0,0 @@
-package connection
-
-import (
-	"crypto/rsa"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/policies"
-	"github.com/s-rah/go-ricochet/utils"
-)
-
-// OutboundConnectionHandler is a convieniance wrapper for handling outbound
-// connections
-type OutboundConnectionHandler struct {
-	connection *Connection
-}
-
-// HandleOutboundConnection returns an OutboundConnectionHandler given a connection
-func HandleOutboundConnection(c *Connection) *OutboundConnectionHandler {
-	och := new(OutboundConnectionHandler)
-	och.connection = c
-	return och
-}
-
-// ProcessAuthAsClient blocks until authentication has succeeded or failed with the
-// provided privateKey, or the connection is closed. A non-nil error is returned in all
-// cases other than successful authentication.
-//
-// ProcessAuthAsClient cannot be called at the same time as any other call to a Porcess
-// function. Another Process function must be called after this function successfully
-// returns to continue handling connection events.
-//
-// For successful authentication, the `known` return value indicates whether the peer
-// accepts us as a known contact. Unknown contacts will generally need to send a contact
-// request before any other activity.
-func (och *OutboundConnectionHandler) ProcessAuthAsClient(privateKey *rsa.PrivateKey) (bool, error) {
-
-	if privateKey == nil {
-		return false, utils.PrivateKeyNotSetError
-	}
-
-	ach := new(AutoConnectionHandler)
-	ach.Init(privateKey, och.connection.RemoteHostname)
-
-	var result channels.AuthChannelResult
-	go func() {
-		err := och.connection.RequestOpenChannel("im.ricochet.auth.hidden-service", ach)
-		if err != nil {
-			return
-		}
-		result = ach.WaitForAuthenticationEvent()
-		och.connection.Break()
-	}()
-
-	policy := policies.UnknownPurposeTimeout
-	err := policy.ExecuteAction(func() error {
-		return och.connection.Process(ach)
-	})
-
-	if err == nil {
-		if result.Accepted == true {
-			return result.IsKnownContact, nil
-		}
-	}
-	return false, utils.ServerRejectedClientConnectionError
-}

contact/request.go

@@ -17,7 +17,7 @@ package Protocol_Data_ContactRequest
 import proto "github.com/golang/protobuf/proto"
 import fmt "fmt"
 import math "math"
-import Protocol_Data_Control "github.com/s-rah/go-ricochet/wire/control"
+import Protocol_Data_Control "github.com/s-rah/go-ricochet/control"
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal

examples/echobot/main.go

@@ -2,97 +2,40 @@ package main
 
 import (
 	"github.com/s-rah/go-ricochet"
-	"github.com/s-rah/go-ricochet/channels"
-	"github.com/s-rah/go-ricochet/connection"
-	"github.com/s-rah/go-ricochet/utils"
 	"log"
-	"time"
 )
 
 // EchoBotService is an example service which simply echoes back what a client
 // sends it.
-type RicochetEchoBot struct {
+type EchoBotService struct {
-	connection.AutoConnectionHandler
+	goricochet.StandardRicochetService
-	messages chan string
 }
 
-func (echobot *RicochetEchoBot) GetContactDetails() (string, string) {
+// IsKnownContact is configured to always accept Contact Requests
-	return "EchoBot", "I LIVE 😈😈!!!!"
+func (ebs *EchoBotService) IsKnownContact(hostname string) bool {
-}
-
-func (echobot *RicochetEchoBot) ContactRequest(name string, message string) string {
-	return "Pending"
-}
-
-func (echobot *RicochetEchoBot) ContactRequestRejected() {
-}
-func (echobot *RicochetEchoBot) ContactRequestAccepted() {
-}
-func (echobot *RicochetEchoBot) ContactRequestError() {
-}
-
-func (echobot *RicochetEchoBot) ChatMessage(messageID uint32, when time.Time, message string) bool {
-	echobot.messages <- message
 	return true
 }
 
-func (echobot *RicochetEchoBot) ChatMessageAck(messageID uint32) {
+// OnContactRequest - we always accept new contact request.
-
+func (ebs *EchoBotService) OnContactRequest(oc *goricochet.OpenConnection, channelID int32, nick string, message string) {
+	ts.StandardRicochetService.OnContactRequest(oc, channelID, nick, message)
+	oc.AckContactRequestOnResponse(channelID, "Accepted")
+	oc.CloseChannel(channelID)
 }
 
-func (echobot *RicochetEchoBot) Connect(privateKeyFile string, hostname string) {
+// OnChatMessage we acknowledge the message, grab the message content and send it back - opening
-
+// a new channel if necessary.
-	privateKey, _ := utils.LoadPrivateKeyFromFile(privateKeyFile)
+func (ebs *EchoBotService) OnChatMessage(oc *goricochet.OpenConnection, channelID int32, messageID int32, message string) {
-	echobot.messages = make(chan string)
+	log.Printf("Received Message from %s: %s", oc.OtherHostname, message)
-
+	oc.AckChatMessage(channelID, messageID)
-	echobot.Init(privateKey, hostname)
+	if oc.GetChannelType(6) == "none" {
-	echobot.RegisterChannelHandler("im.ricochet.contact.request", func() channels.Handler {
+		oc.OpenChatChannel(6)
-		contact := new(channels.ContactRequestChannel)
-		contact.Handler = echobot
-		return contact
-	})
-	echobot.RegisterChannelHandler("im.ricochet.chat", func() channels.Handler {
-		chat := new(channels.ChatChannel)
-		chat.Handler = echobot
-		return chat
-	})
-
-	rc, _ := goricochet.Open(hostname)
-	known, err := connection.HandleOutboundConnection(rc).ProcessAuthAsClient(privateKey)
-	if err == nil {
-
-		go rc.Process(echobot)
-
-		if !known {
-			err := rc.RequestOpenChannel("im.ricochet.contact.request", echobot)
-			if err != nil {
-				log.Printf("could not contact %s", err)
-			}
-		}
-
-		rc.RequestOpenChannel("im.ricochet.chat", echobot)
-		for {
-			message := <-echobot.messages
-			log.Printf("Received Message: %s", message)
-			rc.Do(func() error {
-				log.Printf("Finding Chat Channel")
-				channel := rc.Channel("im.ricochet.chat", channels.Outbound)
-				if channel != nil {
-					log.Printf("Found Chat Channel")
-					chatchannel, ok := (*channel.Handler).(*channels.ChatChannel)
-					if ok {
-						chatchannel.SendMessage(message)
-					}
-				} else {
-					log.Printf("Could not find chat channel")
-				}
-				return nil
-			})
-		}
 	}
+	oc.SendMessage(6, message)
 }
 
 func main() {
-	echoBot := new(RicochetEchoBot)
+	ricochetService := new(EchoBotService)
-	echoBot.Connect("private_key", "oqf7z4ot6kuejgam")
+	ricochetService.InitFromKeyFile("./private_key")
+	ricochetService.Listen(ricochetService, 12345)
 }

messagebuilder.go

@@ -1,11 +1,12 @@
-package utils
+package goricochet
 
 import (
 	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/wire/auth"
+	"github.com/s-rah/go-ricochet/auth"
-	"github.com/s-rah/go-ricochet/wire/chat"
+	"github.com/s-rah/go-ricochet/chat"
-	"github.com/s-rah/go-ricochet/wire/contact"
+	"github.com/s-rah/go-ricochet/contact"
-	"github.com/s-rah/go-ricochet/wire/control"
+	"github.com/s-rah/go-ricochet/control"
+	"github.com/s-rah/go-ricochet/utils"
 )
 
 // MessageBuilder allows a client to construct specific data packets for the
@@ -15,7 +16,7 @@ type MessageBuilder struct {
 
 // OpenChannel contructs a message which will request to open a channel for
 // chat on the given channelID.
-func (mb *MessageBuilder) OpenChannel(channelID int32, channelType string) []byte {
+func (mb *MessageBuilder) OpenChannel(channelID int32, channelType string) ([]byte, error) {
 	oc := &Protocol_Data_Control.OpenChannel{
 		ChannelIdentifier: proto.Int32(channelID),
 		ChannelType:       proto.String(channelType),
@@ -23,13 +24,11 @@ func (mb *MessageBuilder) OpenChannel(channelID int32, channelType string) []byt
 	pc := &Protocol_Data_Control.Packet{
 		OpenChannel: oc,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // AckOpenChannel constructs a message to acknowledge a previous open channel operation.
-func (mb *MessageBuilder) AckOpenChannel(channelID int32) []byte {
+func (mb *MessageBuilder) AckOpenChannel(channelID int32) ([]byte, error) {
 	cr := &Protocol_Data_Control.ChannelResult{
 		ChannelIdentifier: proto.Int32(channelID),
 		Opened:            proto.Bool(true),
@@ -37,13 +36,11 @@ func (mb *MessageBuilder) AckOpenChannel(channelID int32) []byte {
 	pc := &Protocol_Data_Control.Packet{
 		ChannelResult: cr,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // RejectOpenChannel constructs a channel result message, stating the channel failed to open and a reason
-func (mb *MessageBuilder) RejectOpenChannel(channelID int32, error string) []byte {
+func (mb *MessageBuilder) RejectOpenChannel(channelID int32, error string) ([]byte, error) {
 
 	errorNum := Protocol_Data_Control.ChannelResult_CommonError_value[error]
 	commonError := Protocol_Data_Control.ChannelResult_CommonError(errorNum)
@@ -56,32 +53,28 @@ func (mb *MessageBuilder) RejectOpenChannel(channelID int32, error string) []byt
 	pc := &Protocol_Data_Control.Packet{
 		ChannelResult: cr,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // ConfirmAuthChannel constructs a message to acknowledge a previous open channel operation.
-func (mb *MessageBuilder) ConfirmAuthChannel(channelID int32, serverCookie [16]byte) []byte {
+func (mb *MessageBuilder) ConfirmAuthChannel(channelID int32, serverCookie [16]byte) ([]byte, error) {
 	cr := &Protocol_Data_Control.ChannelResult{
 		ChannelIdentifier: proto.Int32(channelID),
 		Opened:            proto.Bool(true),
 	}
 
 	err := proto.SetExtension(cr, Protocol_Data_AuthHiddenService.E_ServerCookie, serverCookie[:])
-	CheckError(err)
+	utils.CheckError(err)
 
 	pc := &Protocol_Data_Control.Packet{
 		ChannelResult: cr,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // OpenContactRequestChannel contructs a message which will reuqest to open a channel for
 // a contact request on the given channelID, with the given nick and message.
-func (mb *MessageBuilder) OpenContactRequestChannel(channelID int32, nick string, message string) []byte {
+func (mb *MessageBuilder) OpenContactRequestChannel(channelID int32, nick string, message string) ([]byte, error) {
 	// Construct a Contact Request Channel
 	oc := &Protocol_Data_Control.OpenChannel{
 		ChannelIdentifier: proto.Int32(channelID),
@@ -94,18 +87,16 @@ func (mb *MessageBuilder) OpenContactRequestChannel(channelID int32, nick string
 	}
 
 	err := proto.SetExtension(oc, Protocol_Data_ContactRequest.E_ContactRequest, contactRequest)
-	CheckError(err)
+	utils.CheckError(err)
 
 	pc := &Protocol_Data_Control.Packet{
 		OpenChannel: oc,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // ReplyToContactRequestOnResponse constructs a message to acknowledge contact request
-func (mb *MessageBuilder) ReplyToContactRequestOnResponse(channelID int32, status string) []byte {
+func (mb *MessageBuilder) ReplyToContactRequestOnResponse(channelID int32, status string) ([]byte, error) {
 	cr := &Protocol_Data_Control.ChannelResult{
 		ChannelIdentifier: proto.Int32(channelID),
 		Opened:            proto.Bool(true),
@@ -118,49 +109,42 @@ func (mb *MessageBuilder) ReplyToContactRequestOnResponse(channelID int32, statu
 	}
 
 	err := proto.SetExtension(cr, Protocol_Data_ContactRequest.E_Response, contactRequest)
-	CheckError(err)
+	utils.CheckError(err)
 
 	pc := &Protocol_Data_Control.Packet{
 		ChannelResult: cr,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // ReplyToContactRequest constructs a message to acknowledge a contact request
-func (mb *MessageBuilder) ReplyToContactRequest(channelID int32, status string) []byte {
+func (mb *MessageBuilder) ReplyToContactRequest(channelID int32, status string) ([]byte, error) {
 	statusNum := Protocol_Data_ContactRequest.Response_Status_value[status]
 	responseStatus := Protocol_Data_ContactRequest.Response_Status(statusNum)
 	contactRequest := &Protocol_Data_ContactRequest.Response{
 		Status: &responseStatus,
 	}
-
+	return proto.Marshal(contactRequest)
-	ret, err := proto.Marshal(contactRequest)
-	CheckError(err)
-	return ret
 }
 
 // OpenAuthenticationChannel constructs a message which will reuqest to open a channel for
 // authentication on the given channelID, with the given cookie
-func (mb *MessageBuilder) OpenAuthenticationChannel(channelID int32, clientCookie [16]byte) []byte {
+func (mb *MessageBuilder) OpenAuthenticationChannel(channelID int32, clientCookie [16]byte) ([]byte, error) {
 	oc := &Protocol_Data_Control.OpenChannel{
 		ChannelIdentifier: proto.Int32(channelID),
 		ChannelType:       proto.String("im.ricochet.auth.hidden-service"),
 	}
 	err := proto.SetExtension(oc, Protocol_Data_AuthHiddenService.E_ClientCookie, clientCookie[:])
-	CheckError(err)
+	utils.CheckError(err)
 
 	pc := &Protocol_Data_Control.Packet{
 		OpenChannel: oc,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }
 
 // Proof constructs a proof message with the given public key and signature.
-func (mb *MessageBuilder) Proof(publicKeyBytes []byte, signatureBytes []byte) []byte {
+func (mb *MessageBuilder) Proof(publicKeyBytes []byte, signatureBytes []byte) ([]byte, error) {
 	proof := &Protocol_Data_AuthHiddenService.Proof{
 		PublicKey: publicKeyBytes,
 		Signature: signatureBytes,
@@ -171,13 +155,11 @@ func (mb *MessageBuilder) Proof(publicKeyBytes []byte, signatureBytes []byte) []
 		Result: nil,
 	}
 
-	ret, err := proto.Marshal(ahsPacket)
+	return proto.Marshal(ahsPacket)
-	CheckError(err)
-	return ret
 }
 
 // AuthResult constructs a response to a Proof
-func (mb *MessageBuilder) AuthResult(accepted bool, isKnownContact bool) []byte {
+func (mb *MessageBuilder) AuthResult(accepted bool, isKnownContact bool) ([]byte, error) {
 	// Construct a Result Message
 	result := &Protocol_Data_AuthHiddenService.Result{
 		Accepted:       proto.Bool(accepted),
@@ -189,74 +171,29 @@ func (mb *MessageBuilder) AuthResult(accepted bool, isKnownContact bool) []byte
 		Result: result,
 	}
 
-	ret, err := proto.Marshal(ahsPacket)
+	return proto.Marshal(ahsPacket)
-	CheckError(err)
-	return ret
 }
 
 // ChatMessage constructs a chat message with the given content.
-func (mb *MessageBuilder) ChatMessage(message string, messageID uint32) []byte {
+func (mb *MessageBuilder) ChatMessage(message string, messageID int32) ([]byte, error) {
 	cm := &Protocol_Data_Chat.ChatMessage{
-		MessageId:   proto.Uint32(messageID),
+		MessageId:   proto.Uint32(uint32(messageID)),
 		MessageText: proto.String(message),
 	}
 	chatPacket := &Protocol_Data_Chat.Packet{
 		ChatMessage: cm,
 	}
-	ret, err := proto.Marshal(chatPacket)
+	return proto.Marshal(chatPacket)
-	CheckError(err)
-	return ret
 }
 
 // AckChatMessage constructs a chat message acknowledgement.
-func (mb *MessageBuilder) AckChatMessage(messageID uint32) []byte {
+func (mb *MessageBuilder) AckChatMessage(messageID int32) ([]byte, error) {
 	cr := &Protocol_Data_Chat.ChatAcknowledge{
-		MessageId: proto.Uint32(messageID),
+		MessageId: proto.Uint32(uint32(messageID)),
 		Accepted:  proto.Bool(true),
 	}
 	pc := &Protocol_Data_Chat.Packet{
 		ChatAcknowledge: cr,
 	}
-	ret, err := proto.Marshal(pc)
+	return proto.Marshal(pc)
-	CheckError(err)
-	return ret
-}
-
-// KeepAlive ...
-func (mb *MessageBuilder) KeepAlive(responseRequested bool) []byte {
-	ka := &Protocol_Data_Control.KeepAlive{
-		ResponseRequested: proto.Bool(responseRequested),
-	}
-	pc := &Protocol_Data_Control.Packet{
-		KeepAlive: ka,
-	}
-	ret, err := proto.Marshal(pc)
-	CheckError(err)
-	return ret
-}
-
-// EnableFeatures ...
-func (mb *MessageBuilder) EnableFeatures(features []string) []byte {
-	ef := &Protocol_Data_Control.EnableFeatures{
-		Feature: features,
-	}
-	pc := &Protocol_Data_Control.Packet{
-		EnableFeatures: ef,
-	}
-	ret, err := proto.Marshal(pc)
-	CheckError(err)
-	return ret
-}
-
-// FeaturesEnabled ...
-func (mb *MessageBuilder) FeaturesEnabled(features []string) []byte {
-	fe := &Protocol_Data_Control.FeaturesEnabled{
-		Feature: features,
-	}
-	pc := &Protocol_Data_Control.Packet{
-		FeaturesEnabled: fe,
-	}
-	ret, err := proto.Marshal(pc)
-	CheckError(err)
-	return ret
 }

messagebuilder_test.go

@@ -0,0 +1,39 @@
+package goricochet
+
+import "testing"
+
+func TestOpenChatChannel(t *testing.T) {
+	messageBuilder := new(MessageBuilder)
+	_, err := messageBuilder.OpenChannel(1, "im.ricochet.chat")
+	if err != nil {
+		t.Errorf("Error building open chat channel message: %s", err)
+	}
+	// TODO: More Indepth Test Of Output
+}
+
+func TestOpenContactRequestChannel(t *testing.T) {
+	messageBuilder := new(MessageBuilder)
+	_, err := messageBuilder.OpenContactRequestChannel(3, "Nickname", "Message")
+	if err != nil {
+		t.Errorf("Error building open contact request channel message: %s", err)
+	}
+	// TODO: More Indepth Test Of Output
+}
+
+func TestOpenAuthenticationChannel(t *testing.T) {
+	messageBuilder := new(MessageBuilder)
+	_, err := messageBuilder.OpenAuthenticationChannel(1, [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+	if err != nil {
+		t.Errorf("Error building open authentication channel message: %s", err)
+	}
+	// TODO: More Indepth Test Of Output
+}
+
+func TestChatMessage(t *testing.T) {
+	messageBuilder := new(MessageBuilder)
+	_, err := messageBuilder.ChatMessage("Hello World", 0)
+	if err != nil {
+		t.Errorf("Error building chat message: %s", err)
+	}
+	// TODO: More Indepth Test Of Output
+}

openconnection.go

@@ -0,0 +1,300 @@
+package goricochet
+
+import (
+	"crypto"
+	"crypto/rsa"
+	"encoding/asn1"
+	"github.com/s-rah/go-ricochet/utils"
+	"net"
+)
+
+// OpenConnection encapsulates the state required to maintain a connection to
+// a ricochet service.
+// Notably OpenConnection does not enforce limits on the channelIDs, channel Assignments
+// or the direction of messages. These are considered to be service enforced rules.
+// (and services are considered to be the best to define them).
+type OpenConnection struct {
+	conn        net.Conn
+	authHandler map[int32]*AuthenticationHandler
+	channels    map[int32]string
+	rni         utils.RicochetNetworkInterface
+
+	Client        bool
+	IsAuthed      bool
+	MyHostname    string
+	OtherHostname string
+	Closed        bool
+}
+
+// Init initializes a OpenConnection object to a default state.
+func (oc *OpenConnection) Init(outbound bool, conn net.Conn) {
+	oc.conn = conn
+	oc.authHandler = make(map[int32]*AuthenticationHandler)
+	oc.channels = make(map[int32]string)
+	oc.rni = new(utils.RicochetNetwork)
+
+	oc.Client = outbound
+	oc.IsAuthed = false
+	oc.MyHostname = ""
+	oc.OtherHostname = ""
+}
+
+// UnsetChannel removes a type association from the channel.
+func (oc *OpenConnection) UnsetChannel(channel int32) {
+	oc.channels[channel] = "none"
+}
+
+// GetChannelType returns the type of the channel on this connection
+func (oc *OpenConnection) GetChannelType(channel int32) string {
+	if val, ok := oc.channels[channel]; ok {
+		return val
+	}
+	return "none"
+}
+
+func (oc *OpenConnection) setChannel(channel int32, channelType string) {
+	oc.channels[channel] = channelType
+}
+
+// HasChannel returns true if the connection has a channel of an associated type, false otherwise
+func (oc *OpenConnection) HasChannel(channelType string) bool {
+	for _, val := range oc.channels {
+		if val == channelType {
+			return true
+		}
+	}
+	return false
+}
+
+// CloseChannel closes a given channel
+// Prerequisites:
+//              * Must have previously connected to a service
+func (oc *OpenConnection) CloseChannel(channel int32) {
+	oc.UnsetChannel(channel)
+	oc.rni.SendRicochetPacket(oc.conn, channel, []byte{})
+}
+
+// Close closes the entire connection
+func (oc *OpenConnection) Close() {
+	oc.conn.Close()
+	oc.Closed = true
+}
+
+// Authenticate opens an Authentication Channel and send a client cookie
+// Prerequisites:
+//              * Must have previously connected to a service
+func (oc *OpenConnection) Authenticate(channel int32) {
+	defer utils.RecoverFromError()
+
+	oc.authHandler[channel] = new(AuthenticationHandler)
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.OpenAuthenticationChannel(channel, oc.authHandler[channel].GenClientCookie())
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.auth.hidden-service")
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// ConfirmAuthChannel responds to a new authentication request.
+// Prerequisites:
+//              * Must have previously connected to a service
+func (oc *OpenConnection) ConfirmAuthChannel(channel int32, clientCookie [16]byte) {
+	defer utils.RecoverFromError()
+
+	oc.authHandler[channel] = new(AuthenticationHandler)
+	oc.authHandler[channel].AddClientCookie(clientCookie[:])
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.ConfirmAuthChannel(channel, oc.authHandler[channel].GenServerCookie())
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.auth.hidden-service")
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// SendProof sends an authentication proof in response to a challenge.
+// Prerequisites:
+//              * Must have previously connected to a service
+//              * channel must be of type auth
+func (oc *OpenConnection) SendProof(channel int32, serverCookie [16]byte, publicKeyBytes []byte, privateKey *rsa.PrivateKey) {
+
+	if oc.authHandler[channel] == nil {
+		return // NoOp
+	}
+
+	oc.authHandler[channel].AddServerCookie(serverCookie[:])
+
+	challenge := oc.authHandler[channel].GenChallenge(oc.MyHostname, oc.OtherHostname)
+	signature, _ := rsa.SignPKCS1v15(nil, privateKey, crypto.SHA256, challenge)
+
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.Proof(publicKeyBytes, signature)
+	utils.CheckError(err)
+
+	oc.rni.SendRicochetPacket(oc.conn, channel, data)
+}
+
+// ValidateProof determines if the given public key and signature align with the
+// already established challenge vector for this communication
+// Prerequisites:
+//              * Must have previously connected to a service
+//              * Client and Server must have already sent their respective cookies (Authenticate and ConfirmAuthChannel)
+func (oc *OpenConnection) ValidateProof(channel int32, publicKeyBytes []byte, signature []byte) bool {
+
+	if oc.authHandler[channel] == nil {
+		return false
+	}
+
+	provisionalHostname := utils.GetTorHostname(publicKeyBytes)
+	publicKey := new(rsa.PublicKey)
+	_, err := asn1.Unmarshal(publicKeyBytes, publicKey)
+	if err != nil {
+		return false
+	}
+	challenge := oc.authHandler[channel].GenChallenge(provisionalHostname, oc.MyHostname)
+	err = rsa.VerifyPKCS1v15(publicKey, crypto.SHA256, challenge[:], signature)
+	if err == nil {
+		oc.OtherHostname = provisionalHostname
+		return true
+	}
+	return false
+
+}
+
+// SendAuthenticationResult responds to an existed authentication Proof
+// Prerequisites:
+//              * Must have previously connected to a service
+//              * channel must be of type auth
+func (oc *OpenConnection) SendAuthenticationResult(channel int32, accepted bool, isKnownContact bool) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.AuthResult(accepted, isKnownContact)
+	utils.CheckError(err)
+	oc.rni.SendRicochetPacket(oc.conn, channel, data)
+}
+
+// OpenChatChannel opens a new chat channel with the given id
+// Prerequisites:
+//              * Must have previously connected to a service
+//              * If acting as the client, id must be odd, else even
+func (oc *OpenConnection) OpenChatChannel(channel int32) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.OpenChannel(channel, "im.ricochet.chat")
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.chat")
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// OpenChannel opens a new chat channel with the given id
+// Prerequisites:
+//              * Must have previously connected to a service
+//              * If acting as the client, id must be odd, else even
+func (oc *OpenConnection) OpenChannel(channel int32, channelType string) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.OpenChannel(channel, channelType)
+	utils.CheckError(err)
+
+	oc.setChannel(channel, channelType)
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// AckOpenChannel acknowledges a previously received open channel message
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+func (oc *OpenConnection) AckOpenChannel(channel int32, channeltype string) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+
+	data, err := messageBuilder.AckOpenChannel(channel)
+	utils.CheckError(err)
+
+	oc.setChannel(channel, channeltype)
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// RejectOpenChannel acknowledges a rejects a previously received open channel message
+// Prerequisites:
+//             * Must have previously connected
+func (oc *OpenConnection) RejectOpenChannel(channel int32, errortype string) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.RejectOpenChannel(channel, errortype)
+	utils.CheckError(err)
+
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// SendContactRequest initiates a contact request to the server.
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+func (oc *OpenConnection) SendContactRequest(channel int32, nick string, message string) {
+	defer utils.RecoverFromError()
+
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.OpenContactRequestChannel(channel, nick, message)
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.contact.request")
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// AckContactRequestOnResponse responds a contact request from a client
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+//             * Must have previously received a Contact Request
+func (oc *OpenConnection) AckContactRequestOnResponse(channel int32, status string) {
+	defer utils.RecoverFromError()
+
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.ReplyToContactRequestOnResponse(channel, status)
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.contact.request")
+	oc.rni.SendRicochetPacket(oc.conn, 0, data)
+}
+
+// AckContactRequest responds to contact request from a client
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+//             * Must have previously received a Contact Request
+func (oc *OpenConnection) AckContactRequest(channel int32, status string) {
+	defer utils.RecoverFromError()
+
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.ReplyToContactRequest(channel, status)
+	utils.CheckError(err)
+
+	oc.setChannel(channel, "im.ricochet.contact.request")
+	oc.rni.SendRicochetPacket(oc.conn, channel, data)
+}
+
+// AckChatMessage acknowledges a previously received chat message.
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+//             * Must have established a known contact status with the other service
+//             * Must have received a Chat message on an open im.ricochet.chat channel with the messageID
+func (oc *OpenConnection) AckChatMessage(channel int32, messageID int32) {
+	defer utils.RecoverFromError()
+
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.AckChatMessage(messageID)
+	utils.CheckError(err)
+
+	oc.rni.SendRicochetPacket(oc.conn, channel, data)
+}
+
+// SendMessage sends a Chat Message (message) to a give Channel (channel).
+// Prerequisites:
+//             * Must have previously connected and authenticated to a service
+//             * Must have established a known contact status with the other service
+//             * Must have previously opened channel with OpenChanel of type im.ricochet.chat
+func (oc *OpenConnection) SendMessage(channel int32, message string) {
+	defer utils.RecoverFromError()
+	messageBuilder := new(MessageBuilder)
+	data, err := messageBuilder.ChatMessage(message, 0)
+	utils.CheckError(err)
+	oc.rni.SendRicochetPacket(oc.conn, channel, data)
+}

openconnection_test.go

@@ -0,0 +1,7 @@
+package goricochet
+
+import "testing"
+
+func TestOpenConnectionAuth(t *testing.T) {
+
+}

policies/timeoutpolicy.go

@@ -1,32 +0,0 @@
-package policies
-
-import (
-	"github.com/s-rah/go-ricochet/utils"
-	"time"
-)
-
-// TimeoutPolicy is a convieance interface for enforcing common timeout patterns
-type TimeoutPolicy time.Duration
-
-// Selection of common timeout policies
-const (
-	UnknownPurposeTimeout TimeoutPolicy = TimeoutPolicy(15 * time.Second)
-)
-
-// ExecuteAction runs a function and returns an error if it hasn't returned
-// by the time specified by TimeoutPolicy
-func (tp *TimeoutPolicy) ExecuteAction(action func() error) error {
-
-	c := make(chan error)
-	go func() {
-		c <- action()
-	}()
-
-	tick := time.Tick(time.Duration(*tp))
-	select {
-	case <-tick:
-		return utils.ActionTimedOutError
-	case err := <-c:
-		return err
-	}
-}

policies/timeoutpolicy_test.go

@@ -1,30 +0,0 @@
-package policies
-
-import (
-	"testing"
-	"time"
-)
-
-func TestTimeoutPolicy(t *testing.T) {
-	policy := UnknownPurposeTimeout
-	result := func() error {
-		time.Sleep(2 * time.Second)
-		return nil
-	}
-	err := policy.ExecuteAction(result)
-	if err != nil {
-		t.Errorf("Action should ahve returned nil: %v", err)
-	}
-}
-
-func TestTimeoutPolicyExpires(t *testing.T) {
-	policy := TimeoutPolicy(1 * time.Second)
-	result := func() error {
-		time.Sleep(5 * time.Second)
-		return nil
-	}
-	err := policy.ExecuteAction(result)
-	if err == nil {
-		t.Errorf("Action should have returned err")
-	}
-}

ricochet.go

@@ -1,90 +1,396 @@
 package goricochet
 
 import (
-	"github.com/s-rah/go-ricochet/connection"
+	"errors"
+	"github.com/golang/protobuf/proto"
+	"github.com/s-rah/go-ricochet/auth"
+	"github.com/s-rah/go-ricochet/chat"
+	"github.com/s-rah/go-ricochet/contact"
+	"github.com/s-rah/go-ricochet/control"
 	"github.com/s-rah/go-ricochet/utils"
 	"io"
+	"log"
 	"net"
+	"strconv"
 )
 
-// Open establishes a protocol session on an established net.Conn, and returns a new
+// Ricochet is a protocol to conducting anonymous IM.
-// OpenConnection instance representing this connection. On error, the connection
+type Ricochet struct {
-// will be closed. This function blocks until version negotiation has completed.
+	newconns        chan *OpenConnection
-// The application should call Process() on the returned OpenConnection to continue
+	networkResolver utils.NetworkResolver
-// handling protocol messages.
+	rni             utils.RicochetNetworkInterface
-func Open(remoteHostname string) (*connection.Connection, error) {
+}
-	networkResolver := utils.NetworkResolver{}
+
-	conn, remoteHostname, err := networkResolver.Resolve(remoteHostname)
+// Init sets up the Ricochet object.
+func (r *Ricochet) Init() {
+	r.newconns = make(chan *OpenConnection)
+	r.networkResolver = utils.NetworkResolver{}
+	r.rni = new(utils.RicochetNetwork)
+}
+
+// Connect sets up a client ricochet connection to host e.g. qn6uo4cmsrfv4kzq.onion. If this
+// function finished successfully then the connection can be assumed to
+// be open and authenticated.
+// To specify a local port using the format "127.0.0.1:[port]|ricochet-id".
+func (r *Ricochet) Connect(host string) (*OpenConnection, error) {
+	var err error
+	conn, host, err := r.networkResolver.Resolve(host)
 
 	if err != nil {
 		return nil, err
 	}
 
-	rc, err := negotiateVersion(conn, remoteHostname)
+	return r.ConnectOpen(conn, host)
+}
+
+// ConnectOpen attempts to open up a new connection to the given host. Returns a
+// pointer to the OpenConnection or an error.
+func (r *Ricochet) ConnectOpen(conn net.Conn, host string) (*OpenConnection, error) {
+	oc, err := r.negotiateVersion(conn, true)
 	if err != nil {
-		conn.Close()
 		return nil, err
 	}
-	return rc, nil
+	oc.OtherHostname = host
+	r.newconns <- oc
+	return oc, nil
 }
 
-// negotiate version takes an open network connection and executes
+// Server launches a new server listening on port
-// the ricochet version negotiation procedure.
+func (r *Ricochet) Server(service RicochetService, port int) {
-func negotiateVersion(conn net.Conn, remoteHostname string) (*connection.Connection, error) {
+	ln, err := net.Listen("tcp", "127.0.0.1:"+strconv.Itoa(port))
-	versions := []byte{0x49, 0x4D, 0x01, 0x01}
+	if err != nil {
-	if n, err := conn.Write(versions); err != nil || n < len(versions) {
+		log.Printf("Cannot Listen on Port %v", port)
-		return nil, utils.VersionNegotiationError
+		return
 	}
 
-	res := make([]byte, 1)
+	r.ServeListener(service, ln)
-	if _, err := io.ReadAtLeast(conn, res, len(res)); err != nil {
-		return nil, utils.VersionNegotiationError
-	}
-
-	if res[0] != 0x01 {
-		return nil, utils.VersionNegotiationFailed
-	}
-	rc := connection.NewOutboundConnection(conn, remoteHostname)
-	return rc, nil
 }
 
-// NegotiateVersionInbound takes in a connection and performs version negotiation
+// ServeListener processes all messages given by the listener ln with the given
-// as if that connection was a client. Returns a ricochet connection if successful
+// RicochetService, service.
-// error otherwise.
+func (r *Ricochet) ServeListener(service RicochetService, ln net.Listener) {
-func NegotiateVersionInbound(conn net.Conn) (*connection.Connection, error) {
+	go r.ProcessMessages(service)
+	service.OnReady()
+	for {
+		// accept connection on port
+		conn, err := ln.Accept()
+		if err != nil {
+			return
+		}
+		go r.processNewConnection(conn, service)
+	}
+}
+
+// processNewConnection sets up a new connection
+func (r *Ricochet) processNewConnection(conn net.Conn, service RicochetService) {
+	oc, err := r.negotiateVersion(conn, false)
+	if err == nil {
+		r.newconns <- oc
+		service.OnConnect(oc)
+	}
+}
+
+// ProcessMessages is intended to be a background thread listening for all messages
+// a client will send. The given RicochetService will be used to respond to messages.
+// Prerequisites:
+//             * Must have previously issued a successful Connect()
+func (r *Ricochet) ProcessMessages(service RicochetService) {
+	for {
+		oc := <-r.newconns
+		if oc == nil {
+			return
+		}
+		go r.processConnection(oc, service)
+	}
+}
+
+// RequestStopMessageLoop requests that the ProcessMessages loop is stopped after handling all currently
+// queued new connections.
+func (r *Ricochet) RequestStopMessageLoop() {
+	r.newconns <- nil
+}
+
+// ProcessConnection starts a blocking process loop which continually waits for
+// new messages to arrive from the connection and uses the given RicochetService
+// to process them.
+func (r *Ricochet) processConnection(oc *OpenConnection, service RicochetService) {
+	service.OnConnect(oc)
+	defer service.OnDisconnect(oc)
+
+	for {
+		if oc.Closed {
+			return
+		}
+
+		packet, err := r.rni.RecvRicochetPacket(oc.conn)
+		if err != nil {
+			oc.Close()
+			return
+		}
+
+		if len(packet.Data) == 0 {
+			service.OnChannelClosed(oc, packet.Channel)
+			continue
+		}
+
+		if packet.Channel == 0 {
+
+			res := new(Protocol_Data_Control.Packet)
+			err := proto.Unmarshal(packet.Data[:], res)
+
+			if err != nil {
+				service.OnGenericError(oc, packet.Channel)
+				continue
+			}
+
+			if res.GetOpenChannel() != nil {
+				opm := res.GetOpenChannel()
+
+				if oc.GetChannelType(opm.GetChannelIdentifier()) != "none" {
+					// Channel is already in use.
+					service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					continue
+				}
+
+				// If I am a Client, the server can only open even numbered channels
+				if oc.Client && opm.GetChannelIdentifier()%2 != 0 {
+					service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					continue
+				}
+
+				// If I am a Server, the client can only open odd numbered channels
+				if !oc.Client && opm.GetChannelIdentifier()%2 != 1 {
+					service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					continue
+				}
+
+				switch opm.GetChannelType() {
+				case "im.ricochet.auth.hidden-service":
+					if oc.Client {
+						// Servers are authed by default and can't auth with hidden-service
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					} else if oc.IsAuthed {
+						// Can't auth if already authed
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					} else if oc.HasChannel("im.ricochet.auth.hidden-service") {
+						// Can't open more than 1 auth channel
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					} else {
+						clientCookie, err := proto.GetExtension(opm, Protocol_Data_AuthHiddenService.E_ClientCookie)
+						if err == nil {
+							clientCookieB := [16]byte{}
+							copy(clientCookieB[:], clientCookie.([]byte)[:])
+							service.OnAuthenticationRequest(oc, opm.GetChannelIdentifier(), clientCookieB)
+						} else {
+							// Must include Client Cookie
+							service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+						}
+					}
+				case "im.ricochet.chat":
+					if !oc.IsAuthed {
+						// Can't open chat channel if not authorized
+						service.OnUnauthorizedError(oc, opm.GetChannelIdentifier())
+					} else if !service.IsKnownContact(oc.OtherHostname) {
+						// Can't open chat channel if not a known contact
+						service.OnUnauthorizedError(oc, opm.GetChannelIdentifier())
+					} else {
+						service.OnOpenChannelRequest(oc, opm.GetChannelIdentifier(), "im.ricochet.chat")
+					}
+				case "im.ricochet.contact.request":
+					if oc.Client {
+						// Servers are not allowed to send contact requests
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					} else if !oc.IsAuthed {
+						// Can't open a contact channel if not authed
+						service.OnUnauthorizedError(oc, opm.GetChannelIdentifier())
+					} else if oc.HasChannel("im.ricochet.contact.request") {
+						// Only 1 contact channel is allowed to be open at a time
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					} else {
+						contactRequestI, err := proto.GetExtension(opm, Protocol_Data_ContactRequest.E_ContactRequest)
+						if err == nil {
+							contactRequest, check := contactRequestI.(*Protocol_Data_ContactRequest.ContactRequest)
+							if check {
+								service.OnContactRequest(oc, opm.GetChannelIdentifier(), contactRequest.GetNickname(), contactRequest.GetMessageText())
+								break
+							}
+						}
+						service.OnBadUsageError(oc, opm.GetChannelIdentifier())
+					}
+				default:
+					service.OnUnknownTypeError(oc, opm.GetChannelIdentifier())
+				}
+			} else if res.GetChannelResult() != nil {
+				crm := res.GetChannelResult()
+				if crm.GetOpened() {
+					switch oc.GetChannelType(crm.GetChannelIdentifier()) {
+					case "im.ricochet.auth.hidden-service":
+						serverCookie, err := proto.GetExtension(crm, Protocol_Data_AuthHiddenService.E_ServerCookie)
+						if err == nil {
+							serverCookieB := [16]byte{}
+							copy(serverCookieB[:], serverCookie.([]byte)[:])
+							service.OnAuthenticationChallenge(oc, crm.GetChannelIdentifier(), serverCookieB)
+						} else {
+							service.OnBadUsageError(oc, crm.GetChannelIdentifier())
+						}
+					case "im.ricochet.chat":
+						service.OnOpenChannelRequestSuccess(oc, crm.GetChannelIdentifier())
+					case "im.ricochet.contact.request":
+						responseI, err := proto.GetExtension(res.GetChannelResult(), Protocol_Data_ContactRequest.E_Response)
+						if err == nil {
+							response, check := responseI.(*Protocol_Data_ContactRequest.Response)
+							if check {
+								service.OnContactRequestAck(oc, crm.GetChannelIdentifier(), response.GetStatus().String())
+								break
+							}
+						}
+						service.OnBadUsageError(oc, crm.GetChannelIdentifier())
+					default:
+						service.OnBadUsageError(oc, crm.GetChannelIdentifier())
+					}
+				} else {
+					if oc.GetChannelType(crm.GetChannelIdentifier()) != "none" {
+						service.OnFailedChannelOpen(oc, crm.GetChannelIdentifier(), crm.GetCommonError().String())
+					} else {
+						oc.CloseChannel(crm.GetChannelIdentifier())
+					}
+				}
+			} else {
+				// Unknown Message
+				oc.CloseChannel(packet.Channel)
+			}
+		} else if oc.GetChannelType(packet.Channel) == "im.ricochet.auth.hidden-service" {
+			res := new(Protocol_Data_AuthHiddenService.Packet)
+			err := proto.Unmarshal(packet.Data[:], res)
+
+			if err != nil {
+				oc.CloseChannel(packet.Channel)
+				continue
+			}
+
+			if res.GetProof() != nil && !oc.Client { // Only Clients Send Proofs
+				service.OnAuthenticationProof(oc, packet.Channel, res.GetProof().GetPublicKey(), res.GetProof().GetSignature(), service.IsKnownContact(oc.OtherHostname))
+			} else if res.GetResult() != nil && oc.Client { // Only Servers Send Results
+				service.OnAuthenticationResult(oc, packet.Channel, res.GetResult().GetAccepted(), res.GetResult().GetIsKnownContact())
+			} else {
+				// If neither of the above are satisfied we just close the connection
+				oc.Close()
+			}
+
+		} else if oc.GetChannelType(packet.Channel) == "im.ricochet.chat" {
+
+			// NOTE: These auth checks should be redundant, however they
+			// are included here for defense-in-depth if for some reason
+			// a previously authed connection becomes untrusted / not known and
+			// the state is not cleaned up.
+			if !oc.IsAuthed {
+				// Can't send chat messages if not authorized
+				service.OnUnauthorizedError(oc, packet.Channel)
+			} else if !service.IsKnownContact(oc.OtherHostname) {
+				// Can't send chat message if not a known contact
+				service.OnUnauthorizedError(oc, packet.Channel)
+			} else {
+				res := new(Protocol_Data_Chat.Packet)
+				err := proto.Unmarshal(packet.Data[:], res)
+
+				if err != nil {
+					oc.CloseChannel(packet.Channel)
+					continue
+				}
+
+				if res.GetChatMessage() != nil {
+					service.OnChatMessage(oc, packet.Channel, int32(res.GetChatMessage().GetMessageId()), res.GetChatMessage().GetMessageText())
+				} else if res.GetChatAcknowledge() != nil {
+					service.OnChatMessageAck(oc, packet.Channel, int32(res.GetChatMessage().GetMessageId()))
+				} else {
+					// If neither of the above are satisfied we just close the connection
+					oc.Close()
+				}
+			}
+		} else if oc.GetChannelType(packet.Channel) == "im.ricochet.contact.request" {
+
+			// NOTE: These auth checks should be redundant, however they
+			// are included here for defense-in-depth if for some reason
+			// a previously authed connection becomes untrusted / not known and
+			// the state is not cleaned up.
+			if !oc.Client {
+				// Clients are not allowed to send contact request responses
+				service.OnBadUsageError(oc, packet.Channel)
+			} else if !oc.IsAuthed {
+				// Can't send a contact request if not authed
+				service.OnBadUsageError(oc, packet.Channel)
+			} else {
+				res := new(Protocol_Data_ContactRequest.Response)
+				err := proto.Unmarshal(packet.Data[:], res)
+				log.Printf("%v", res)
+				if err != nil {
+					oc.CloseChannel(packet.Channel)
+					continue
+				}
+				service.OnContactRequestAck(oc, packet.Channel, res.GetStatus().String())
+			}
+		} else if oc.GetChannelType(packet.Channel) == "none" {
+			// Invalid Channel Assignment
+			oc.CloseChannel(packet.Channel)
+		} else {
+			oc.Close()
+		}
+	}
+}
+
+// Perform version negotiation on the connection, and create an OpenConnection if successful
+func (r *Ricochet) negotiateVersion(conn net.Conn, outbound bool) (*OpenConnection, error) {
 	versions := []byte{0x49, 0x4D, 0x01, 0x01}
-	// Read version response header
-	header := make([]byte, 3)
-	if _, err := io.ReadAtLeast(conn, header, len(header)); err != nil {
-		return nil, err
-	}
 
-	if header[0] != versions[0] || header[1] != versions[1] || header[2] < 1 {
+	// Outbound side of the connection sends a list of supported versions
-		return nil, utils.VersionNegotiationError
+	if outbound {
-	}
+		if n, err := conn.Write(versions); err != nil || n < len(versions) {
+			return nil, err
+		}
 
-	// Read list of supported versions (which is header[2] bytes long)
+		res := make([]byte, 1)
-	versionList := make([]byte, header[2])
+		if _, err := io.ReadAtLeast(conn, res, len(res)); err != nil {
-	if _, err := io.ReadAtLeast(conn, versionList, len(versionList)); err != nil {
+			return nil, err
-		return nil, utils.VersionNegotiationError
+		}
-	}
 
-	selectedVersion := byte(0xff)
+		if res[0] != 0x01 {
-	for _, v := range versionList {
+			return nil, errors.New("unsupported protocol version")
-		if v == 0x01 {
+		}
-			selectedVersion = v
+	} else {
-			break
+		// Read version response header
+		header := make([]byte, 3)
+		if _, err := io.ReadAtLeast(conn, header, len(header)); err != nil {
+			return nil, err
+		}
+
+		if header[0] != versions[0] || header[1] != versions[1] || header[2] < 1 {
+			return nil, errors.New("invalid protocol response")
+		}
+
+		// Read list of supported versions (which is header[2] bytes long)
+		versionList := make([]byte, header[2])
+		if _, err := io.ReadAtLeast(conn, versionList, len(versionList)); err != nil {
+			return nil, err
+		}
+
+		selectedVersion := byte(0xff)
+		for _, v := range versionList {
+			if v == 0x01 {
+				selectedVersion = v
+				break
+			}
+		}
+
+		if n, err := conn.Write([]byte{selectedVersion}); err != nil || n < 1 {
+			return nil, err
+		}
+
+		if selectedVersion == 0xff {
+			return nil, errors.New("no supported protocol version")
 		}
 	}
 
-	if n, err := conn.Write([]byte{selectedVersion}); err != nil || n < 1 {
+	oc := new(OpenConnection)
-		return nil, utils.VersionNegotiationFailed
+	oc.Init(outbound, conn)
-	}
+	return oc, nil
-
-	if selectedVersion == 0xff {
-		return nil, utils.VersionNegotiationFailed
-	}
-
-	rc := connection.NewInboundConnection(conn)
-	return rc, nil
 }

ricochet_test.go

@@ -1,68 +0,0 @@
-package goricochet
-
-import (
-	"github.com/s-rah/go-ricochet/utils"
-	"net"
-	"testing"
-	"time"
-)
-
-func SimpleServer() {
-	ln, _ := net.Listen("tcp", "127.0.0.1:11000")
-	conn, _ := ln.Accept()
-	b := make([]byte, 4)
-	n, err := conn.Read(b)
-	if n == 4 && err == nil {
-		conn.Write([]byte{0x01})
-	}
-	conn.Close()
-}
-
-func BadVersionNegotiation() {
-	ln, _ := net.Listen("tcp", "127.0.0.1:11001")
-	conn, _ := ln.Accept()
-	// We are already testing negotiation bytes, we don't care, just send a termination.
-	conn.Write([]byte{0x00})
-	conn.Close()
-}
-
-func NotRicochetServer() {
-	ln, _ := net.Listen("tcp", "127.0.0.1:11002")
-	conn, _ := ln.Accept()
-	conn.Close()
-}
-
-func TestRicochet(t *testing.T) {
-	go SimpleServer()
-	// Wait for Server to Initialize
-	time.Sleep(time.Second)
-
-	rc, err := Open("127.0.0.1:11000|abcdefghijklmno.onion")
-	if err == nil {
-		if rc.IsInbound {
-			t.Errorf("RicochetConnection declares itself as an Inbound connection after an Outbound attempt...that shouldn't happen")
-		}
-		return
-	}
-	t.Errorf("RicochetProtocol: Open Failed: %v", err)
-}
-
-func TestBadVersionNegotiation(t *testing.T) {
-	go BadVersionNegotiation()
-	time.Sleep(time.Second)
-
-	_, err := Open("127.0.0.1:11001|abcdefghijklmno.onion")
-	if err != utils.VersionNegotiationFailed {
-		t.Errorf("RicochetProtocol: Server Had No Correct Version - Should Have Failed: err = %v", err)
-	}
-}
-
-func TestNotARicochetServer(t *testing.T) {
-	go NotRicochetServer()
-	time.Sleep(time.Second)
-
-	_, err := Open("127.0.0.1:11002|abcdefghijklmno.onion")
-	if err != utils.VersionNegotiationError {
-		t.Errorf("RicochetProtocol: Server Had No Correct Version - Should Have Failed: err = %v", err)
-	}
-}

ricochetservice.go

@@ -0,0 +1,36 @@
+package goricochet
+
+// RicochetService provides an interface for building automated ricochet applications.
+type RicochetService interface {
+	OnReady()
+	OnConnect(oc *OpenConnection)
+	OnDisconnect(oc *OpenConnection)
+
+	// Authentication Management
+	OnAuthenticationRequest(oc *OpenConnection, channelID int32, clientCookie [16]byte)
+	OnAuthenticationChallenge(oc *OpenConnection, channelID int32, serverCookie [16]byte)
+	OnAuthenticationProof(oc *OpenConnection, channelID int32, publicKey []byte, signature []byte, isKnownContact bool)
+	OnAuthenticationResult(oc *OpenConnection, channelID int32, result bool, isKnownContact bool)
+
+	// Contact Management
+	IsKnownContact(hostname string) bool
+	OnContactRequest(oc *OpenConnection, channelID int32, nick string, message string)
+	OnContactRequestAck(oc *OpenConnection, channelID int32, status string)
+
+	// Managing Channels
+	OnOpenChannelRequest(oc *OpenConnection, channelID int32, channelType string)
+	OnOpenChannelRequestSuccess(oc *OpenConnection, channelID int32)
+	OnChannelClosed(oc *OpenConnection, channelID int32)
+
+	// Chat Messages
+	OnChatMessage(oc *OpenConnection, channelID int32, messageID int32, message string)
+	OnChatMessageAck(oc *OpenConnection, channelID int32, messageID int32)
+
+	// Handle Errors
+	OnFailedChannelOpen(oc *OpenConnection, channelID int32, errorType string)
+	OnGenericError(oc *OpenConnection, channelID int32)
+	OnUnknownTypeError(oc *OpenConnection, channelID int32)
+	OnUnauthorizedError(oc *OpenConnection, channelID int32)
+	OnBadUsageError(oc *OpenConnection, channelID int32)
+	OnFailedError(oc *OpenConnection, channelID int32)
+}

standardricochetservice.go

@@ -0,0 +1,192 @@
+package goricochet
+
+import (
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/asn1"
+	"encoding/pem"
+	"errors"
+	"github.com/s-rah/go-ricochet/utils"
+	"io/ioutil"
+	"log"
+)
+
+// StandardRicochetService implements all the necessary flows to implement a
+// minimal, protocol compliant Ricochet Service. It can be built on by other
+// applications to produce automated riochet applications.
+type StandardRicochetService struct {
+	ricochet       *Ricochet
+	privateKey     *rsa.PrivateKey
+	serverHostname string
+}
+
+// Init initializes a StandardRicochetService with the cryptographic key given
+// by filename.
+func (srs *StandardRicochetService) InitFromKeyFile(filename string) error {
+	pemData, err := ioutil.ReadFile(filename)
+
+	if err != nil {
+		return errors.New("Could not setup ricochet service: could not read private key")
+	}
+	return srs.InitFromKey(pemData)
+}
+
+// Init initializes a StandardRicochetService with the cryptographic key
+func (srs *StandardRicochetService) InitFromKey(pemData []byte) error {
+	srs.ricochet = new(Ricochet)
+	srs.ricochet.Init()
+
+	block, _ := pem.Decode(pemData)
+	if block == nil || block.Type != "RSA PRIVATE KEY" {
+		return errors.New("Could not setup ricochet service: no valid PEM data found")
+	}
+
+	var err error
+	srs.privateKey, err = x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		return errors.New("Could not setup ricochet service: could not parse private key")
+	}
+
+	publicKeyBytes, _ := asn1.Marshal(rsa.PublicKey{
+		N: srs.privateKey.PublicKey.N,
+		E: srs.privateKey.PublicKey.E,
+	})
+
+	srs.serverHostname = utils.GetTorHostname(publicKeyBytes)
+	log.Printf("Initialised ricochet service for %s", srs.serverHostname)
+
+	return nil
+}
+
+// OnReady is called once a Server has been established (by calling Listen)
+func (srs *StandardRicochetService) OnReady() {
+}
+
+// Listen starts the ricochet service. Listen must be called before any other method (apart from Init)
+func (srs *StandardRicochetService) Listen(service RicochetService, port int) {
+	srs.ricochet.Server(service, port)
+}
+
+// Connect can be called to initiate a new client connection to a server
+func (srs *StandardRicochetService) Connect(hostname string) error {
+	log.Printf("Connecting to...%s", hostname)
+	oc, err := srs.ricochet.Connect(hostname)
+	if err != nil {
+		return errors.New("Could not connect to: " + hostname + " " + err.Error())
+	}
+	oc.MyHostname = srs.serverHostname
+	return nil
+}
+
+// OnConnect is called when a client or server successfully passes Version Negotiation.
+func (srs *StandardRicochetService) OnConnect(oc *OpenConnection) {
+	if oc.Client {
+		log.Printf("Sucessefully Connected to %s", oc.OtherHostname)
+		oc.IsAuthed = true // Connections to Servers are Considered Authenticated by Default
+		oc.Authenticate(1)
+	} else {
+		oc.MyHostname = srs.serverHostname
+	}
+}
+
+// OnDisconnect is called when a connection is closed
+func (srs *StandardRicochetService) OnDisconnect(oc *OpenConnection) {
+}
+
+// OnAuthenticationRequest is called when a client requests Authentication
+func (srs *StandardRicochetService) OnAuthenticationRequest(oc *OpenConnection, channelID int32, clientCookie [16]byte) {
+	oc.ConfirmAuthChannel(channelID, clientCookie)
+}
+
+// OnAuthenticationChallenge constructs a valid authentication challenge to the serverCookie
+func (srs *StandardRicochetService) OnAuthenticationChallenge(oc *OpenConnection, channelID int32, serverCookie [16]byte) {
+	// DER Encode the Public Key
+	publickeyBytes, _ := asn1.Marshal(rsa.PublicKey{
+		N: srs.privateKey.PublicKey.N,
+		E: srs.privateKey.PublicKey.E,
+	})
+	oc.SendProof(1, serverCookie, publickeyBytes, srs.privateKey)
+}
+
+// OnAuthenticationProof is called when a client sends Proof for an existing authentication challenge
+func (srs *StandardRicochetService) OnAuthenticationProof(oc *OpenConnection, channelID int32, publicKey []byte, signature []byte, isKnownContact bool) {
+	result := oc.ValidateProof(channelID, publicKey, signature)
+	oc.SendAuthenticationResult(channelID, result, isKnownContact)
+	oc.IsAuthed = result
+	oc.CloseChannel(channelID)
+}
+
+// OnAuthenticationResult is called once a server has returned the result of the Proof Verification
+func (srs *StandardRicochetService) OnAuthenticationResult(oc *OpenConnection, channelID int32, result bool, isKnownContact bool) {
+	oc.IsAuthed = result
+}
+
+// IsKnownContact allows a caller to determine if a hostname an authorized contact.
+func (srs *StandardRicochetService) IsKnownContact(hostname string) bool {
+	return false
+}
+
+// OnContactRequest is called when a client sends a new contact request
+func (srs *StandardRicochetService) OnContactRequest(oc *OpenConnection, channelID int32, nick string, message string) {
+}
+
+// OnContactRequestAck is called when a server sends a reply to an existing contact request
+func (srs *StandardRicochetService) OnContactRequestAck(oc *OpenConnection, channelID int32, status string) {
+}
+
+// OnOpenChannelRequest is called when a client or server requests to open a new channel
+func (srs *StandardRicochetService) OnOpenChannelRequest(oc *OpenConnection, channelID int32, channelType string) {
+	oc.AckOpenChannel(channelID, channelType)
+}
+
+// OnOpenChannelRequestSuccess is called when a client or server responds to an open channel request
+func (srs *StandardRicochetService) OnOpenChannelRequestSuccess(oc *OpenConnection, channelID int32) {
+}
+
+// OnChannelClosed is called when a client or server closes an existing channel
+func (srs *StandardRicochetService) OnChannelClosed(oc *OpenConnection, channelID int32) {
+}
+
+// OnChatMessage is called when a new chat message is received.
+func (srs *StandardRicochetService) OnChatMessage(oc *OpenConnection, channelID int32, messageID int32, message string) {
+	oc.AckChatMessage(channelID, messageID)
+}
+
+// OnChatMessageAck is called when a new chat message is ascknowledged.
+func (srs *StandardRicochetService) OnChatMessageAck(oc *OpenConnection, channelID int32, messageID int32) {
+}
+
+// OnFailedChannelOpen is called when a server fails to open a channel
+func (srs *StandardRicochetService) OnFailedChannelOpen(oc *OpenConnection, channelID int32, errorType string) {
+	oc.UnsetChannel(channelID)
+}
+
+// OnGenericError is called when a generalized error is returned from the peer
+func (srs *StandardRicochetService) OnGenericError(oc *OpenConnection, channelID int32) {
+	oc.RejectOpenChannel(channelID, "GenericError")
+}
+
+//OnUnknownTypeError is called when an unknown type error is returned from the peer
+func (srs *StandardRicochetService) OnUnknownTypeError(oc *OpenConnection, channelID int32) {
+	oc.RejectOpenChannel(channelID, "UnknownTypeError")
+}
+
+// OnUnauthorizedError is called when an unathorized error is returned from the peer
+func (srs *StandardRicochetService) OnUnauthorizedError(oc *OpenConnection, channelID int32) {
+	oc.RejectOpenChannel(channelID, "UnauthorizedError")
+}
+
+// OnBadUsageError is called when a bad usage error is returned from the peer
+func (srs *StandardRicochetService) OnBadUsageError(oc *OpenConnection, channelID int32) {
+	oc.RejectOpenChannel(channelID, "BadUsageError")
+}
+
+// OnFailedError is called when a failed error is returned from the peer
+func (srs *StandardRicochetService) OnFailedError(oc *OpenConnection, channelID int32) {
+	oc.RejectOpenChannel(channelID, "FailedError")
+}
+
+// RGetServerHostname returns the generated tor hostname from the private key
+func (srs *StandardRicochetService) GetServerHostname() string {
+	return srs.serverHostname
+}

standardricochetservice_bad_usage_error_test.go

@@ -0,0 +1,108 @@
+package goricochet
+
+import "testing"
+import "time"
+import "log"
+
+type TestBadUsageService struct {
+	StandardRicochetService
+	BadUsageErrorCount    int
+	UnknownTypeErrorCount int
+	ChannelClosed         int
+}
+
+func (ts *TestBadUsageService) OnConnect(oc *OpenConnection) {
+	if oc.Client {
+		oc.OpenChannel(17, "im.ricochet.auth.hidden-service") // Fail because no Extension
+	}
+	ts.StandardRicochetService.OnConnect(oc)
+	if oc.Client {
+		oc.Authenticate(103) // Should Fail because cannot open more than one auth-hidden-service channel at once
+	}
+}
+
+func (ts *TestBadUsageService) OnAuthenticationProof(oc *OpenConnection, channelID int32, publicKey []byte, signature []byte, isKnownContact bool) {
+	oc.Authenticate(2)                       // Try to authenticate again...will fail servers don't auth
+	oc.SendContactRequest(4, "test", "test") // Only clients can send contact requests
+	ts.StandardRicochetService.OnAuthenticationProof(oc, channelID, publicKey, signature, isKnownContact)
+	oc.OpenChatChannel(5) // Fail because server can only open even numbered channels
+	oc.OpenChatChannel(3) // Fail because already in use...
+}
+
+// OnContactRequest is called when a client sends a new contact request
+func (ts *TestBadUsageService) OnContactRequest(oc *OpenConnection, channelID int32, nick string, message string) {
+	oc.AckContactRequestOnResponse(channelID, "Pending") // Done to keep the contact request channel open
+}
+
+func (ts *TestBadUsageService) OnAuthenticationResult(oc *OpenConnection, channelID int32, result bool, isKnownContact bool) {
+	ts.StandardRicochetService.OnAuthenticationResult(oc, channelID, result, isKnownContact)
+
+	oc.OpenChatChannel(3) // Succeed
+	oc.OpenChatChannel(3) // Should fail as duplicate (channel already in use)
+
+	oc.OpenChatChannel(6) // Should fail because clients are not allowed to open even numbered channels
+
+	oc.SendMessage(101, "test") // Should fail as 101 doesn't exist
+
+	oc.Authenticate(1) // Try to authenticate again...will fail because we have already authenticated
+
+	oc.OpenChannel(19, "im.ricochet.contact.request") // Will Fail
+	oc.SendContactRequest(11, "test", "test")         // Succeed
+	oc.SendContactRequest(13, "test", "test")         // Trigger singleton contact request check
+
+	oc.OpenChannel(15, "im.ricochet.not-a-real-type") // Fail UnknownType
+}
+
+// OnChannelClose is called when a client or server closes an existing channel
+func (ts *TestBadUsageService) OnChannelClosed(oc *OpenConnection, channelID int32) {
+	if channelID == 101 {
+		log.Printf("Received Channel Closed: %v", channelID)
+		ts.ChannelClosed++
+	}
+}
+
+func (ts *TestBadUsageService) OnFailedChannelOpen(oc *OpenConnection, channelID int32, errorType string) {
+	log.Printf("Failed Channel Open %v %v", channelID, errorType)
+	ts.StandardRicochetService.OnFailedChannelOpen(oc, channelID, errorType)
+	if errorType == "BadUsageError" {
+		ts.BadUsageErrorCount++
+	} else if errorType == "UnknownTypeError" {
+		ts.UnknownTypeErrorCount++
+	}
+}
+
+func (ts *TestBadUsageService) IsKnownContact(hostname string) bool {
+	return true
+}
+
+func TestBadUsageServer(t *testing.T) {
+	ricochetService := new(TestBadUsageService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService.Listen(ricochetService, 9884)
+
+	time.Sleep(time.Second * 2)
+
+	ricochetService2 := new(TestBadUsageService)
+	err = ricochetService2.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService2.Listen(ricochetService2, 9885)
+	err = ricochetService2.Connect("127.0.0.1:9884|kwke2hntvyfqm7dr")
+	if err != nil {
+		t.Errorf("Could not connect to ricochet service:  %v", err)
+	}
+
+	time.Sleep(time.Second * 3)
+	if ricochetService2.ChannelClosed != 1 || ricochetService2.BadUsageErrorCount != 7 || ricochetService.BadUsageErrorCount != 4 || ricochetService2.UnknownTypeErrorCount != 1 {
+		t.Errorf("Invalid number of errors seen Closed:%v, Client Bad Usage:%v UnknownTypeErrorCount: %v, Server Bad Usage: %v ", ricochetService2.ChannelClosed, ricochetService2.BadUsageErrorCount, ricochetService2.UnknownTypeErrorCount, ricochetService.BadUsageErrorCount)
+	}
+
+}

standardricochetservice_test.go

@@ -0,0 +1,118 @@
+package goricochet
+
+import "testing"
+import "time"
+import "log"
+
+type TestService struct {
+	StandardRicochetService
+	ReceivedMessage bool
+	KnownContact    bool // Mocking contact request
+}
+
+func (ts *TestService) OnAuthenticationResult(oc *OpenConnection, channelID int32, result bool, isKnownContact bool) {
+	ts.StandardRicochetService.OnAuthenticationResult(oc, channelID, result, isKnownContact)
+	if !isKnownContact {
+		log.Printf("Sending Contact Request")
+		oc.SendContactRequest(3, "test", "test")
+	}
+}
+
+func (ts *TestService) OnContactRequest(oc *OpenConnection, channelID int32, nick string, message string) {
+	ts.StandardRicochetService.OnContactRequest(oc, channelID, nick, message)
+	oc.AckContactRequestOnResponse(channelID, "Pending")
+	oc.AckContactRequest(channelID, "Accepted")
+	ts.KnownContact = true
+	oc.CloseChannel(channelID)
+}
+
+func (ts *TestService) OnOpenChannelRequestSuccess(oc *OpenConnection, channelID int32) {
+	ts.StandardRicochetService.OnOpenChannelRequestSuccess(oc, channelID)
+	oc.SendMessage(channelID, "TEST MESSAGE")
+}
+
+func (ts *TestService) OnContactRequestAck(oc *OpenConnection, channelID int32, status string) {
+	ts.StandardRicochetService.OnContactRequestAck(oc, channelID, status)
+	if status == "Accepted" {
+		log.Printf("Got accepted contact request")
+		ts.KnownContact = true
+		oc.OpenChatChannel(5)
+	} else if status == "Pending" {
+		log.Printf("Got pending contact request")
+	}
+}
+
+func (ts *TestService) OnChatMessage(oc *OpenConnection, channelID int32, messageID int32, message string) {
+	ts.StandardRicochetService.OnChatMessage(oc, channelID, messageID, message)
+	if message == "TEST MESSAGE" {
+		ts.ReceivedMessage = true
+	}
+}
+
+func (ts *TestService) IsKnownContact(hostname string) bool {
+	return ts.KnownContact
+}
+
+func TestServer(t *testing.T) {
+	ricochetService := new(TestService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService.Listen(ricochetService, 9878)
+
+	time.Sleep(time.Second * 2)
+
+	ricochetService2 := new(TestService)
+	err = ricochetService2.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService2.Listen(ricochetService2, 9879)
+	err = ricochetService2.Connect("127.0.0.1:9878|kwke2hntvyfqm7dr")
+	if err != nil {
+		t.Errorf("Could not connect to ricochet service:  %v", err)
+	}
+
+	time.Sleep(time.Second * 5) // Wait a bit longer
+	if !ricochetService.ReceivedMessage {
+		t.Errorf("Test server did not receive message")
+	}
+
+}
+
+func TestServerInvalidKey(t *testing.T) {
+	ricochetService := new(TestService)
+	err := ricochetService.InitFromKeyFile("./private_key.does.not.exist")
+
+	if err == nil {
+		t.Errorf("Should not have initate ricochet service, private key should not exist")
+	}
+}
+
+func TestServerCouldNotConnect(t *testing.T) {
+	ricochetService := new(TestService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+	err = ricochetService.Connect("127.0.0.1:65535|kwke2hntvyfqm7dr")
+	if err == nil {
+		t.Errorf("Should not have been been able to connect to 127.0.0.1:65535|kwke2hntvyfqm7dr")
+	}
+}
+
+func TestGetServerHostname(t *testing.T) {
+	ricochetService := new(TestService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+	if ricochetService.GetServerHostname() != "kwke2hntvyfqm7dr" {
+		t.Errorf("GetServerHostname did not return expected 'kwke2hntvyfqm7dr'")
+	}
+}

standardricochetservice_unauth_test.go

@@ -0,0 +1,63 @@
+package goricochet
+
+import "testing"
+import "time"
+import "log"
+
+// The purpose of this test is to exercise the Unauthorized Error flows that occur
+// when a client attempts to open a Chat Channel or Send a Contact Reuqest before Authentication
+// itself with the Service.
+
+type TestUnauthorizedService struct {
+	StandardRicochetService
+	FailedToOpen int
+}
+
+func (ts *TestUnauthorizedService) OnConnect(oc *OpenConnection) {
+	if oc.Client {
+		log.Printf("Attempting Authentication Not Authorized")
+		oc.IsAuthed = true // Connections to Servers are Considered Authenticated by Default
+		// REMOVED Authenticate
+		oc.OpenChatChannel(5)
+		oc.SendContactRequest(3, "test", "test")
+	}
+}
+
+func (ts *TestUnauthorizedService) OnFailedChannelOpen(oc *OpenConnection, channelID int32, errorType string) {
+	oc.UnsetChannel(channelID)
+	if errorType == "UnauthorizedError" {
+		ts.FailedToOpen++
+	}
+}
+
+func TestUnauthorizedClientReject(t *testing.T) {
+	ricochetService := new(TestService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService.Listen(ricochetService, 9880)
+
+	time.Sleep(time.Second * 2)
+
+	ricochetService2 := new(TestUnauthorizedService)
+	err = ricochetService2.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService2.Listen(ricochetService2, 9881)
+	err = ricochetService2.Connect("127.0.0.1:9880|kwke2hntvyfqm7dr")
+	if err != nil {
+		t.Errorf("Could not connect to ricochet service:  %v", err)
+	}
+
+	time.Sleep(time.Second * 2)
+	if ricochetService2.FailedToOpen != 2 {
+		t.Errorf("Test server did not reject open channels with unauthorized error")
+	}
+
+}

standardricochetservice_unknown_contact_test.go

@@ -0,0 +1,60 @@
+package goricochet
+
+import "testing"
+import "time"
+import "log"
+
+type TestUnknownContactService struct {
+	StandardRicochetService
+	FailedToOpen bool
+}
+
+func (ts *TestUnknownContactService) OnAuthenticationResult(oc *OpenConnection, channelID int32, result bool, isKnownContact bool) {
+	log.Printf("Authentication Result")
+	ts.StandardRicochetService.OnAuthenticationResult(oc, channelID, result, isKnownContact)
+	oc.OpenChatChannel(5)
+}
+
+func (ts *TestUnknownContactService) OnFailedChannelOpen(oc *OpenConnection, channelID int32, errorType string) {
+	log.Printf("Failed Channel Open %v", errorType)
+	oc.UnsetChannel(channelID)
+	if errorType == "UnauthorizedError" {
+		ts.FailedToOpen = true
+	}
+}
+
+func (ts *TestUnknownContactService) IsKnownContact(hostname string) bool {
+	return false
+}
+
+func TestUnknownContactServer(t *testing.T) {
+	ricochetService := new(StandardRicochetService)
+	err := ricochetService.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService.Listen(ricochetService, 9882)
+
+	time.Sleep(time.Second * 2)
+
+	ricochetService2 := new(TestUnknownContactService)
+	err = ricochetService2.InitFromKeyFile("./private_key")
+
+	if err != nil {
+		t.Errorf("Could not initate ricochet service: %v", err)
+	}
+
+	go ricochetService2.Listen(ricochetService2, 9883)
+	err = ricochetService2.Connect("127.0.0.1:9882|kwke2hntvyfqm7dr")
+	if err != nil {
+		t.Errorf("Could not connect to ricochet service:  %v", err)
+	}
+
+	time.Sleep(time.Second * 2)
+	if !ricochetService2.FailedToOpen {
+		t.Errorf("Test server did receive message should have failed")
+	}
+
+}

testing/private_key

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXgIBAAKBgQC3xEJBH4oVFaotPJw6dezx67Gv4Xukw8CZRGqNFO8yF7Rejtcj
-/0RTqqZwj6H6FjxY60dgYnN6IphW0juemNZhxOXeM/5Gb5xO+kWGi5Qt87aSDxnA
-MDLgqw79ihuD3m1C1TBz0olmjXPU1VtadZuZcVBST7SLs2/k55GNNr7BoQIDAQAB
-AoGBAK3ybVCdnSQWLM7DJ5LC23Wnx7sXceVlkiLCOyWuYjiFbatwBD/DupaD2yaD
-HyzN7XOxyg93QZ2jr5XHTL30KEAn/3akNBsX3sjHZnjVfTwD5+oZKd7HYMMxekWf
-87TIx2IHvGEo2NaFMLkEZ5TX3Gre8CYOofjFcpj4661ZfYp9AkEA9I0EmQX26ibs
-CRGkwPuEj5q5N/PmIHgMWr1pepOlmzJjnxy6SI3NUwmzKrqM6YUM8loSywqfVMrJ
-RVzA5jp76wJBAMBeu2hS8KcUTIu66j0pXMhI5wDA3yLiO53TEMwufCPXcaWUMH+e
-5AIPL7aZ8ouf895OH0TZKxPNMnbrJ+5F0aMCQDoi/CDUxipMLnjJdP1bzdvF0Jp4
-pRC6+VTpCpZVW11V0VEWJ0LwUwuWlr1ls/If60ACIc2bLN2fh9Gxhzo0VRkCQQCS
-nKCAVhYLgLEGHaLAknGgQ8+rB1QIphuBoYc/1n3OYzi+VT7RRSvJVgGrTZFJUNLw
-LuIt+sWWBeHcOETqmFO5AkEAwwfcxs8QZtX6hCj2MTPi8Q28LIoA/M6eAqYc2I0B
-eXxf2J2Qco7sMmBLr1Jp3jZNd5W2fMtlhUZAomOj4piVOA==
------END RSA PRIVATE KEY-----

testing/private_key_auth_fail_test

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQC9eXEz2sONLCHcaW3OR2kB1fwp+DkQYC74J4FkrdbuSLoPi/fZ
-l0bRQZXKprZGhQsH0z1ERuD5wJD/XDws3XdIJuiGw8wEttwFe8lbsBsRedmjqsAy
-NukE1gZDoVYAwYgyLz7Obch7m+2h4M42uMDzyGno4nXKIV/1hTfLJvqw6QIDAQAB
-AoGADp+Kzxe5M/IOAvbYFK2KOywKtCqGLO9fcKOL5vtLtURDp+ODk3WLb6cCKovH
-UZX/DfGNrvFRd7UW+75gno3RIMxbdyC8AcKNz8jnYzSpG2/tXL8LNAZxV5OdbxG3
-S2iVB/rOt49ilH2WcaqUkSqL0+goPLcJy2k/owV0aPEOUwECQQDsTdHbkYt7cSKn
-aJtIRV1j3M1Tzu7ZJYLzDF5S0VECP80Gb9gCpMPSt45hGk6AzMGZFCImi9vmiW2c
-TzFgLHbZAkEAzURjG0o9YRhesZkg+PoJ33zakg+Tp/6FYY73eBqLg71iO2YS9YIR
-DwJ9IG//V8oqFm0dhW20LLbvTqtWyspgkQJBAN5ai7I0Ti+l0Zn9kMB8pNgnGP5X
-peCmr4XMiaUcWUHojyATdgtmxu0s08kDXANOqI1GqKvkxtMzVfTTf/6jWGECQQCY
-e3DT2PZ3pk7Rx1sDGVs0Nd94GTIq3ZvfuQCEq9Nv7cOHNHBpCFH7wHGLIyef44IY
-Xr5LXA84GDz1R7qVsnjBAkB1qYel38r3NoMvVLhCUh2HLZSTxPF9V7iE+5OvakIJ
-+Glb45PyloFIobv1yQoIOJlu+uoilGRbOiMUVG1uS0Tj
------END RSA PRIVATE KEY-----

tests.sh

@@ -4,9 +4,6 @@ set -e
 pwd
 go test -coverprofile=main.cover.out -v .
 go test -coverprofile=utils.cover.out -v ./utils
-go test -coverprofile=channels.cover.out -v ./channels
-go test -coverprofile=connection.cover.out -v ./connection
-go test -coverprofile=policies.cover.out -v ./policies
 echo "mode: set" > coverage.out && cat *.cover.out | grep -v mode: | sort -r | \
 awk '{if($1 != last) {print $0;last=$1}}' >> coverage.out
 rm -rf *.cover.out

utils/crypto.go

@@ -1,56 +0,0 @@
-package utils
-
-import (
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"io/ioutil"
-	"errors"
-	"crypto/rand"
-)
-
-const (
-	InvalidPrivateKeyFileError = Error("InvalidPrivateKeyFileError")
-	RICOCHET_KEY_SIZE = 1024
-)
-
-// Generate a private key for use
-func GeneratePrivateKey() (*rsa.PrivateKey, error) {
-	privateKey, err := rsa.GenerateKey(rand.Reader, RICOCHET_KEY_SIZE)
-	if err != nil {
-		return nil, errors.New("Could not generate key: " + err.Error())
-	}
-	privateKeyDer := x509.MarshalPKCS1PrivateKey(privateKey)
-	return x509.ParsePKCS1PrivateKey(privateKeyDer)
-}
-
-// LoadPrivateKeyFromFile loads a private key from a file...
-func LoadPrivateKeyFromFile(filename string) (*rsa.PrivateKey, error) {
-	pemData, err := ioutil.ReadFile(filename)
-	if err != nil {
-		return nil, err
-	}
-
-	return ParsePrivateKey(pemData)
-}
-
-// Convert a private key string to a usable private key
-func ParsePrivateKey(pemData []byte) (*rsa.PrivateKey, error) {
-	block, _ := pem.Decode(pemData)
-	if block == nil || block.Type != "RSA PRIVATE KEY" {
-		return nil, InvalidPrivateKeyFileError
-	}
-
-	return x509.ParsePKCS1PrivateKey(block.Bytes)
-}
-
-// turn a private key into storable string
-func PrivateKeyToString(privateKey *rsa.PrivateKey) string {
-	privateKeyBlock := pem.Block{
-		Type: "RSA PRIVATE KEY",
-		Headers: nil,
-		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
-	}
-
-	return string(pem.EncodeToMemory(&privateKeyBlock))
-}

utils/error.go

@@ -1,45 +1,17 @@
 package utils
 
-import (
+import "fmt"
-	"fmt"
+import "log"
-)
 
-// Error captures various common ricochet errors
+// RecoverFromError doesn't really recover from anything....see comment below
-type Error string
+func RecoverFromError() {
-
+	if r := recover(); r != nil {
-func (e Error) Error() string { return string(e) }
+		// This should only really happen if there is a failure de/serializing. If
-
+		// this does happen then we currently error. In the future we might be
-// Defining Versions
+		// able to make this nicer.
-const (
+		log.Fatalf("Recovered from panic() - this really shouldn't happen. Reason: %v", r)
-	VersionNegotiationError  = Error("VersionNegotiationError")
+	}
-	VersionNegotiationFailed = Error("VersionNegotiationFailed")
+}
-
-	RicochetConnectionClosed = Error("RicochetConnectionClosed")
-	RicochetProtocolError    = Error("RicochetProtocolError")
-
-	UnknownChannelTypeError      = Error("UnknownChannelTypeError")
-	UnauthorizedChannelTypeError = Error("UnauthorizedChannelTypeError")
-
-	// Timeout Errors
-	ActionTimedOutError = Error("ActionTimedOutError")
-	PeerTimedOutError   = Error("PeerTimedOutError")
-
-	// Authentication Errors
-	ClientFailedToAuthenticateError     = Error("ClientFailedToAuthenticateError")
-	ServerRejectedClientConnectionError = Error("ServerRejectedClientConnectionError")
-
-	UnauthorizedActionError  = Error("UnauthorizedActionError")
-	ChannelClosedByPeerError = Error("ChannelClosedByPeerError")
-
-	// Channel Management Errors
-	ServerAttemptedToOpenEvenNumberedChannelError = Error("ServerAttemptedToOpenEvenNumberedChannelError")
-	ClientAttemptedToOpenOddNumberedChannelError  = Error("ClientAttemptedToOpenOddNumberedChannelError")
-	ChannelIDIsAlreadyInUseError                  = Error("ChannelIDIsAlreadyInUseError")
-	AttemptToOpenMoreThanOneSingletonChannelError = Error("AttemptToOpenMoreThanOneSingletonChannelError")
-
-	// Library Use Errors
-	PrivateKeyNotSetError = Error("ClientFailedToAuthenticateError")
-)
 
 // CheckError is a helper function for panicing on errors which we need to handle
 // but should be very rare e.g. failures deserializing a protobuf object that

utils/messagebuilder_test.go

@@ -1,74 +0,0 @@
-package utils
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/s-rah/go-ricochet/wire/control"
-	"testing"
-)
-
-func TestOpenChatChannel(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	messageBuilder.OpenChannel(1, "im.ricochet.chat")
-	// TODO: More Indepth Test Of Output
-}
-
-func TestOpenContactRequestChannel(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	messageBuilder.OpenContactRequestChannel(3, "Nickname", "Message")
-	// TODO: More Indepth Test Of Output
-}
-
-func TestOpenAuthenticationChannel(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	messageBuilder.OpenAuthenticationChannel(1, [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
-	// TODO: More Indepth Test Of Output
-}
-
-func TestChatMessage(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	messageBuilder.ChatMessage("Hello World", 0)
-	// TODO: More Indepth Test Of Output
-}
-
-func TestKeepAlive(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	raw := messageBuilder.KeepAlive(true)
-	res := new(Protocol_Data_Control.Packet)
-	err := proto.Unmarshal(raw, res)
-	if err != nil || res.GetKeepAlive() == nil || !res.GetKeepAlive().GetResponseRequested() {
-		t.Errorf("Decoding Keep Alive Packet failed or no response requested: %v %v", err, res)
-	}
-}
-
-func TestFeaturesEnabled(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	features := []string{"feature1", "feature2"}
-	raw := messageBuilder.FeaturesEnabled(features)
-	res := new(Protocol_Data_Control.Packet)
-	err := proto.Unmarshal(raw, res)
-	if err != nil || res.GetFeaturesEnabled() == nil {
-		t.Errorf("Decoding FeaturesEnabled Packet failed: %v %v", err, res)
-	}
-
-	for i, v := range res.GetFeaturesEnabled().GetFeature() {
-		if v != features[i] {
-			t.Errorf("Requested Features do not match %v %v", res.GetFeaturesEnabled().GetFeature(), features)
-		}
-	}
-}
-
-func TestEnableFeatures(t *testing.T) {
-	messageBuilder := new(MessageBuilder)
-	features := []string{"feature1", "feature2"}
-	raw := messageBuilder.EnableFeatures(features)
-	res := new(Protocol_Data_Control.Packet)
-	err := proto.Unmarshal(raw, res)
-	if err != nil || res.GetEnableFeatures() == nil {
-		t.Errorf("Decoding EnableFeatures Packet failed: %v %v", err, res)
-	}
-	for i, v := range res.GetEnableFeatures().GetFeature() {
-		if v != features[i] {
-			t.Errorf("Requested Features do not match %v %v", res.GetFeaturesEnabled().GetFeature(), features)
-		}
-	}
-}

utils/networking.go

@@ -3,14 +3,10 @@ package utils
 import (
 	"bytes"
 	"encoding/binary"
+	"errors"
 	"io"
 )
 
-const (
-	InvalidPacketLengthError = Error("InvalidPacketLengthError")
-	InvalidChannelIDError    = Error("InvalidChannelIDError")
-)
-
 // RicochetData is a structure containing the raw data and the channel it the
 // message originated on.
 type RicochetData struct {
@@ -40,11 +36,11 @@ type RicochetNetwork struct {
 func (rn *RicochetNetwork) SendRicochetPacket(dst io.Writer, channel int32, data []byte) error {
 	packet := make([]byte, 4+len(data))
 	if len(packet) > 65535 {
-		return InvalidPacketLengthError
+		return errors.New("packet too large")
 	}
 	binary.BigEndian.PutUint16(packet[0:2], uint16(len(packet)))
 	if channel < 0 || channel > 65535 {
-		return InvalidChannelIDError
+		return errors.New("invalid channel ID")
 	}
 	binary.BigEndian.PutUint16(packet[2:4], uint16(channel))
 	copy(packet[4:], data[:])
@@ -72,7 +68,7 @@ func (rn *RicochetNetwork) RecvRicochetPacket(reader io.Reader) (RicochetData, e
 
 	size := int(binary.BigEndian.Uint16(header[0:2]))
 	if size < 4 {
-		return packet, InvalidPacketLengthError
+		return packet, errors.New("invalid packet length")
 	}
 
 	packet.Channel = int32(binary.BigEndian.Uint16(header[2:4]))

utils/networkresolver.go

@@ -1,17 +1,12 @@
 package utils
 
 import (
+	"errors"
 	"golang.org/x/net/proxy"
 	"net"
 	"strings"
 )
 
-const (
-	CannotResolveLocalTCPAddressError = Error("CannotResolveLocalTCPAddressError")
-	CannotDialLocalTCPAddressError    = Error("CannotDialLocalTCPAddressError")
-	CannotDialRicochetAddressError    = Error("CannotDialRicochetAddressError")
-)
-
 // NetworkResolver allows a client to resolve various hostnames to connections
 // The supported types are onions address are:
 //  * ricochet:jlq67qzo6s4yp3sp
@@ -26,11 +21,11 @@ func (nr *NetworkResolver) Resolve(hostname string) (net.Conn, string, error) {
 		addrParts := strings.Split(hostname, "|")
 		tcpAddr, err := net.ResolveTCPAddr("tcp", addrParts[0])
 		if err != nil {
-			return nil, "", CannotResolveLocalTCPAddressError
+			return nil, "", errors.New("Cannot Resolve Local TCP Address")
 		}
 		conn, err := net.DialTCP("tcp", nil, tcpAddr)
 		if err != nil {
-			return nil, "", CannotDialLocalTCPAddressError
+			return nil, "", errors.New("Cannot Dial Local TCP Address")
 		}
 
 		// return just the onion address, not the local override for the hostname
@@ -50,8 +45,8 @@ func (nr *NetworkResolver) Resolve(hostname string) (net.Conn, string, error) {
 
 	conn, err := torDialer.Dial("tcp", resolvedHostname+".onion:9878")
 	if err != nil {
-		return nil, "", CannotDialRicochetAddressError
+		return nil, "", errors.New("Cannot Dial Remote Ricochet Address")
 	}
-
+	//conn.SetDeadline(time.Now().Add(5 * time.Second))
 	return conn, resolvedHostname, nil
 }

vendor/github.com/golang/protobuf/AUTHORS

@@ -1,3 +0,0 @@
-# This source code refers to The Go Authors for copyright purposes.
-# The master list of authors is in the main Go distribution,
-# visible at http://tip.golang.org/AUTHORS.

vendor/github.com/golang/protobuf/CONTRIBUTORS

@@ -1,3 +0,0 @@
-# This source code was written by the Go contributors.
-# The master list of contributors is in the main Go distribution,
-# visible at http://tip.golang.org/CONTRIBUTORS.

vendor/github.com/golang/protobuf/LICENSE

@@ -1,31 +0,0 @@
-Go support for Protocol Buffers - Google's data interchange format
-
-Copyright 2010 The Go Authors.  All rights reserved.
-https://github.com/golang/protobuf
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-    * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-

vendor/github.com/golang/protobuf/proto/Makefile

@@ -1,43 +0,0 @@
-# Go support for Protocol Buffers - Google's data interchange format
-#
-# Copyright 2010 The Go Authors.  All rights reserved.
-# https://github.com/golang/protobuf
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-install:
-	go install
-
-test: install generate-test-pbs
-	go test
-
-
-generate-test-pbs:
-	make install
-	make -C testdata
-	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata,Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any:. proto3_proto/proto3.proto
-	make

vendor/github.com/golang/protobuf/proto/clone.go

@@ -1,229 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer deep copy and merge.
-// TODO: RawMessage.
-
-package proto
-
-import (
-	"log"
-	"reflect"
-	"strings"
-)
-
-// Clone returns a deep copy of a protocol buffer.
-func Clone(pb Message) Message {
-	in := reflect.ValueOf(pb)
-	if in.IsNil() {
-		return pb
-	}
-
-	out := reflect.New(in.Type().Elem())
-	// out is empty so a merge is a deep copy.
-	mergeStruct(out.Elem(), in.Elem())
-	return out.Interface().(Message)
-}
-
-// Merge merges src into dst.
-// Required and optional fields that are set in src will be set to that value in dst.
-// Elements of repeated fields will be appended.
-// Merge panics if src and dst are not the same type, or if dst is nil.
-func Merge(dst, src Message) {
-	in := reflect.ValueOf(src)
-	out := reflect.ValueOf(dst)
-	if out.IsNil() {
-		panic("proto: nil destination")
-	}
-	if in.Type() != out.Type() {
-		// Explicit test prior to mergeStruct so that mistyped nils will fail
-		panic("proto: type mismatch")
-	}
-	if in.IsNil() {
-		// Merging nil into non-nil is a quiet no-op
-		return
-	}
-	mergeStruct(out.Elem(), in.Elem())
-}
-
-func mergeStruct(out, in reflect.Value) {
-	sprop := GetProperties(in.Type())
-	for i := 0; i < in.NumField(); i++ {
-		f := in.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
-	}
-
-	if emIn, ok := extendable(in.Addr().Interface()); ok {
-		emOut, _ := extendable(out.Addr().Interface())
-		mIn, muIn := emIn.extensionsRead()
-		if mIn != nil {
-			mOut := emOut.extensionsWrite()
-			muIn.Lock()
-			mergeExtension(mOut, mIn)
-			muIn.Unlock()
-		}
-	}
-
-	uf := in.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return
-	}
-	uin := uf.Bytes()
-	if len(uin) > 0 {
-		out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
-	}
-}
-
-// mergeAny performs a merge between two values of the same type.
-// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
-// prop is set if this is a struct field (it may be nil).
-func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
-	if in.Type() == protoMessageType {
-		if !in.IsNil() {
-			if out.IsNil() {
-				out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
-			} else {
-				Merge(out.Interface().(Message), in.Interface().(Message))
-			}
-		}
-		return
-	}
-	switch in.Kind() {
-	case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-		reflect.String, reflect.Uint32, reflect.Uint64:
-		if !viaPtr && isProto3Zero(in) {
-			return
-		}
-		out.Set(in)
-	case reflect.Interface:
-		// Probably a oneof field; copy non-nil values.
-		if in.IsNil() {
-			return
-		}
-		// Allocate destination if it is not set, or set to a different type.
-		// Otherwise we will merge as normal.
-		if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
-			out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
-		}
-		mergeAny(out.Elem(), in.Elem(), false, nil)
-	case reflect.Map:
-		if in.Len() == 0 {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.MakeMap(in.Type()))
-		}
-		// For maps with value types of *T or []byte we need to deep copy each value.
-		elemKind := in.Type().Elem().Kind()
-		for _, key := range in.MapKeys() {
-			var val reflect.Value
-			switch elemKind {
-			case reflect.Ptr:
-				val = reflect.New(in.Type().Elem().Elem())
-				mergeAny(val, in.MapIndex(key), false, nil)
-			case reflect.Slice:
-				val = in.MapIndex(key)
-				val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
-			default:
-				val = in.MapIndex(key)
-			}
-			out.SetMapIndex(key, val)
-		}
-	case reflect.Ptr:
-		if in.IsNil() {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.New(in.Elem().Type()))
-		}
-		mergeAny(out.Elem(), in.Elem(), true, nil)
-	case reflect.Slice:
-		if in.IsNil() {
-			return
-		}
-		if in.Type().Elem().Kind() == reflect.Uint8 {
-			// []byte is a scalar bytes field, not a repeated field.
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value, and should not
-			// be merged.
-			if prop != nil && prop.proto3 && in.Len() == 0 {
-				return
-			}
-
-			// Make a deep copy.
-			// Append to []byte{} instead of []byte(nil) so that we never end up
-			// with a nil result.
-			out.SetBytes(append([]byte{}, in.Bytes()...))
-			return
-		}
-		n := in.Len()
-		if out.IsNil() {
-			out.Set(reflect.MakeSlice(in.Type(), 0, n))
-		}
-		switch in.Type().Elem().Kind() {
-		case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-			reflect.String, reflect.Uint32, reflect.Uint64:
-			out.Set(reflect.AppendSlice(out, in))
-		default:
-			for i := 0; i < n; i++ {
-				x := reflect.Indirect(reflect.New(in.Type().Elem()))
-				mergeAny(x, in.Index(i), false, nil)
-				out.Set(reflect.Append(out, x))
-			}
-		}
-	case reflect.Struct:
-		mergeStruct(out, in)
-	default:
-		// unknown type, so not a protocol buffer
-		log.Printf("proto: don't know how to copy %v", in)
-	}
-}
-
-func mergeExtension(out, in map[int32]Extension) {
-	for extNum, eIn := range in {
-		eOut := Extension{desc: eIn.desc}
-		if eIn.value != nil {
-			v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
-			mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
-			eOut.value = v.Interface()
-		}
-		if eIn.enc != nil {
-			eOut.enc = make([]byte, len(eIn.enc))
-			copy(eOut.enc, eIn.enc)
-		}
-
-		out[extNum] = eOut
-	}
-}

vendor/github.com/golang/protobuf/proto/decode.go

@@ -1,970 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for decoding protocol buffer data to construct in-memory representations.
- */
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"os"
-	"reflect"
-)
-
-// errOverflow is returned when an integer is too large to be represented.
-var errOverflow = errors.New("proto: integer overflow")
-
-// ErrInternalBadWireType is returned by generated code when an incorrect
-// wire type is encountered. It does not get returned to user code.
-var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
-
-// The fundamental decoders that interpret bytes on the wire.
-// Those that take integer types all return uint64 and are
-// therefore of type valueDecoder.
-
-// DecodeVarint reads a varint-encoded integer from the slice.
-// It returns the integer and the number of bytes consumed, or
-// zero if there is not enough.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func DecodeVarint(buf []byte) (x uint64, n int) {
-	for shift := uint(0); shift < 64; shift += 7 {
-		if n >= len(buf) {
-			return 0, 0
-		}
-		b := uint64(buf[n])
-		n++
-		x |= (b & 0x7F) << shift
-		if (b & 0x80) == 0 {
-			return x, n
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	return 0, 0
-}
-
-func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
-	i := p.index
-	l := len(p.buf)
-
-	for shift := uint(0); shift < 64; shift += 7 {
-		if i >= l {
-			err = io.ErrUnexpectedEOF
-			return
-		}
-		b := p.buf[i]
-		i++
-		x |= (uint64(b) & 0x7F) << shift
-		if b < 0x80 {
-			p.index = i
-			return
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	err = errOverflow
-	return
-}
-
-// DecodeVarint reads a varint-encoded integer from the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) DecodeVarint() (x uint64, err error) {
-	i := p.index
-	buf := p.buf
-
-	if i >= len(buf) {
-		return 0, io.ErrUnexpectedEOF
-	} else if buf[i] < 0x80 {
-		p.index++
-		return uint64(buf[i]), nil
-	} else if len(buf)-i < 10 {
-		return p.decodeVarintSlow()
-	}
-
-	var b uint64
-	// we already checked the first byte
-	x = uint64(buf[i]) - 0x80
-	i++
-
-	b = uint64(buf[i])
-	i++
-	x += b << 7
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 7
-
-	b = uint64(buf[i])
-	i++
-	x += b << 14
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 14
-
-	b = uint64(buf[i])
-	i++
-	x += b << 21
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 21
-
-	b = uint64(buf[i])
-	i++
-	x += b << 28
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 28
-
-	b = uint64(buf[i])
-	i++
-	x += b << 35
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 35
-
-	b = uint64(buf[i])
-	i++
-	x += b << 42
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 42
-
-	b = uint64(buf[i])
-	i++
-	x += b << 49
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 49
-
-	b = uint64(buf[i])
-	i++
-	x += b << 56
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 56
-
-	b = uint64(buf[i])
-	i++
-	x += b << 63
-	if b&0x80 == 0 {
-		goto done
-	}
-	// x -= 0x80 << 63 // Always zero.
-
-	return 0, errOverflow
-
-done:
-	p.index = i
-	return x, nil
-}
-
-// DecodeFixed64 reads a 64-bit integer from the Buffer.
-// This is the format for the
-// fixed64, sfixed64, and double protocol buffer types.
-func (p *Buffer) DecodeFixed64() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 8
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-8])
-	x |= uint64(p.buf[i-7]) << 8
-	x |= uint64(p.buf[i-6]) << 16
-	x |= uint64(p.buf[i-5]) << 24
-	x |= uint64(p.buf[i-4]) << 32
-	x |= uint64(p.buf[i-3]) << 40
-	x |= uint64(p.buf[i-2]) << 48
-	x |= uint64(p.buf[i-1]) << 56
-	return
-}
-
-// DecodeFixed32 reads a 32-bit integer from the Buffer.
-// This is the format for the
-// fixed32, sfixed32, and float protocol buffer types.
-func (p *Buffer) DecodeFixed32() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 4
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-4])
-	x |= uint64(p.buf[i-3]) << 8
-	x |= uint64(p.buf[i-2]) << 16
-	x |= uint64(p.buf[i-1]) << 24
-	return
-}
-
-// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
-// from the Buffer.
-// This is the format used for the sint64 protocol buffer type.
-func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
-	return
-}
-
-// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
-// from  the Buffer.
-// This is the format used for the sint32 protocol buffer type.
-func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
-	return
-}
-
-// These are not ValueDecoders: they produce an array of bytes or a string.
-// bytes, embedded messages
-
-// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
-// This is the format used for the bytes protocol buffer
-// type and for embedded messages.
-func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
-	n, err := p.DecodeVarint()
-	if err != nil {
-		return nil, err
-	}
-
-	nb := int(n)
-	if nb < 0 {
-		return nil, fmt.Errorf("proto: bad byte length %d", nb)
-	}
-	end := p.index + nb
-	if end < p.index || end > len(p.buf) {
-		return nil, io.ErrUnexpectedEOF
-	}
-
-	if !alloc {
-		// todo: check if can get more uses of alloc=false
-		buf = p.buf[p.index:end]
-		p.index += nb
-		return
-	}
-
-	buf = make([]byte, nb)
-	copy(buf, p.buf[p.index:])
-	p.index += nb
-	return
-}
-
-// DecodeStringBytes reads an encoded string from the Buffer.
-// This is the format used for the proto2 string type.
-func (p *Buffer) DecodeStringBytes() (s string, err error) {
-	buf, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return
-	}
-	return string(buf), nil
-}
-
-// Skip the next item in the buffer. Its wire type is decoded and presented as an argument.
-// If the protocol buffer has extensions, and the field matches, add it as an extension.
-// Otherwise, if the XXX_unrecognized field exists, append the skipped data there.
-func (o *Buffer) skipAndSave(t reflect.Type, tag, wire int, base structPointer, unrecField field) error {
-	oi := o.index
-
-	err := o.skip(t, tag, wire)
-	if err != nil {
-		return err
-	}
-
-	if !unrecField.IsValid() {
-		return nil
-	}
-
-	ptr := structPointer_Bytes(base, unrecField)
-
-	// Add the skipped field to struct field
-	obuf := o.buf
-
-	o.buf = *ptr
-	o.EncodeVarint(uint64(tag<<3 | wire))
-	*ptr = append(o.buf, obuf[oi:o.index]...)
-
-	o.buf = obuf
-
-	return nil
-}
-
-// Skip the next item in the buffer. Its wire type is decoded and presented as an argument.
-func (o *Buffer) skip(t reflect.Type, tag, wire int) error {
-
-	var u uint64
-	var err error
-
-	switch wire {
-	case WireVarint:
-		_, err = o.DecodeVarint()
-	case WireFixed64:
-		_, err = o.DecodeFixed64()
-	case WireBytes:
-		_, err = o.DecodeRawBytes(false)
-	case WireFixed32:
-		_, err = o.DecodeFixed32()
-	case WireStartGroup:
-		for {
-			u, err = o.DecodeVarint()
-			if err != nil {
-				break
-			}
-			fwire := int(u & 0x7)
-			if fwire == WireEndGroup {
-				break
-			}
-			ftag := int(u >> 3)
-			err = o.skip(t, ftag, fwire)
-			if err != nil {
-				break
-			}
-		}
-	default:
-		err = fmt.Errorf("proto: can't skip unknown wire type %d for %s", wire, t)
-	}
-	return err
-}
-
-// Unmarshaler is the interface representing objects that can
-// unmarshal themselves.  The method should reset the receiver before
-// decoding starts.  The argument points to data that may be
-// overwritten, so implementations should not keep references to the
-// buffer.
-type Unmarshaler interface {
-	Unmarshal([]byte) error
-}
-
-// Unmarshal parses the protocol buffer representation in buf and places the
-// decoded result in pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// Unmarshal resets pb before starting to unmarshal, so any
-// existing data in pb is always removed. Use UnmarshalMerge
-// to preserve and append to existing data.
-func Unmarshal(buf []byte, pb Message) error {
-	pb.Reset()
-	return UnmarshalMerge(buf, pb)
-}
-
-// UnmarshalMerge parses the protocol buffer representation in buf and
-// writes the decoded result to pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// UnmarshalMerge merges into existing data in pb.
-// Most code should use Unmarshal instead.
-func UnmarshalMerge(buf []byte, pb Message) error {
-	// If the object can unmarshal itself, let it.
-	if u, ok := pb.(Unmarshaler); ok {
-		return u.Unmarshal(buf)
-	}
-	return NewBuffer(buf).Unmarshal(pb)
-}
-
-// DecodeMessage reads a count-delimited message from the Buffer.
-func (p *Buffer) DecodeMessage(pb Message) error {
-	enc, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return err
-	}
-	return NewBuffer(enc).Unmarshal(pb)
-}
-
-// DecodeGroup reads a tag-delimited group from the Buffer.
-func (p *Buffer) DecodeGroup(pb Message) error {
-	typ, base, err := getbase(pb)
-	if err != nil {
-		return err
-	}
-	return p.unmarshalType(typ.Elem(), GetProperties(typ.Elem()), true, base)
-}
-
-// Unmarshal parses the protocol buffer representation in the
-// Buffer and places the decoded result in pb.  If the struct
-// underlying pb does not match the data in the buffer, the results can be
-// unpredictable.
-//
-// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
-func (p *Buffer) Unmarshal(pb Message) error {
-	// If the object can unmarshal itself, let it.
-	if u, ok := pb.(Unmarshaler); ok {
-		err := u.Unmarshal(p.buf[p.index:])
-		p.index = len(p.buf)
-		return err
-	}
-
-	typ, base, err := getbase(pb)
-	if err != nil {
-		return err
-	}
-
-	err = p.unmarshalType(typ.Elem(), GetProperties(typ.Elem()), false, base)
-
-	if collectStats {
-		stats.Decode++
-	}
-
-	return err
-}
-
-// unmarshalType does the work of unmarshaling a structure.
-func (o *Buffer) unmarshalType(st reflect.Type, prop *StructProperties, is_group bool, base structPointer) error {
-	var state errorState
-	required, reqFields := prop.reqCount, uint64(0)
-
-	var err error
-	for err == nil && o.index < len(o.buf) {
-		oi := o.index
-		var u uint64
-		u, err = o.DecodeVarint()
-		if err != nil {
-			break
-		}
-		wire := int(u & 0x7)
-		if wire == WireEndGroup {
-			if is_group {
-				if required > 0 {
-					// Not enough information to determine the exact field.
-					// (See below.)
-					return &RequiredNotSetError{"{Unknown}"}
-				}
-				return nil // input is satisfied
-			}
-			return fmt.Errorf("proto: %s: wiretype end group for non-group", st)
-		}
-		tag := int(u >> 3)
-		if tag <= 0 {
-			return fmt.Errorf("proto: %s: illegal tag %d (wire type %d)", st, tag, wire)
-		}
-		fieldnum, ok := prop.decoderTags.get(tag)
-		if !ok {
-			// Maybe it's an extension?
-			if prop.extendable {
-				if e, _ := extendable(structPointer_Interface(base, st)); isExtensionField(e, int32(tag)) {
-					if err = o.skip(st, tag, wire); err == nil {
-						extmap := e.extensionsWrite()
-						ext := extmap[int32(tag)] // may be missing
-						ext.enc = append(ext.enc, o.buf[oi:o.index]...)
-						extmap[int32(tag)] = ext
-					}
-					continue
-				}
-			}
-			// Maybe it's a oneof?
-			if prop.oneofUnmarshaler != nil {
-				m := structPointer_Interface(base, st).(Message)
-				// First return value indicates whether tag is a oneof field.
-				ok, err = prop.oneofUnmarshaler(m, tag, wire, o)
-				if err == ErrInternalBadWireType {
-					// Map the error to something more descriptive.
-					// Do the formatting here to save generated code space.
-					err = fmt.Errorf("bad wiretype for oneof field in %T", m)
-				}
-				if ok {
-					continue
-				}
-			}
-			err = o.skipAndSave(st, tag, wire, base, prop.unrecField)
-			continue
-		}
-		p := prop.Prop[fieldnum]
-
-		if p.dec == nil {
-			fmt.Fprintf(os.Stderr, "proto: no protobuf decoder for %s.%s\n", st, st.Field(fieldnum).Name)
-			continue
-		}
-		dec := p.dec
-		if wire != WireStartGroup && wire != p.WireType {
-			if wire == WireBytes && p.packedDec != nil {
-				// a packable field
-				dec = p.packedDec
-			} else {
-				err = fmt.Errorf("proto: bad wiretype for field %s.%s: got wiretype %d, want %d", st, st.Field(fieldnum).Name, wire, p.WireType)
-				continue
-			}
-		}
-		decErr := dec(o, p, base)
-		if decErr != nil && !state.shouldContinue(decErr, p) {
-			err = decErr
-		}
-		if err == nil && p.Required {
-			// Successfully decoded a required field.
-			if tag <= 64 {
-				// use bitmap for fields 1-64 to catch field reuse.
-				var mask uint64 = 1 << uint64(tag-1)
-				if reqFields&mask == 0 {
-					// new required field
-					reqFields |= mask
-					required--
-				}
-			} else {
-				// This is imprecise. It can be fooled by a required field
-				// with a tag > 64 that is encoded twice; that's very rare.
-				// A fully correct implementation would require allocating
-				// a data structure, which we would like to avoid.
-				required--
-			}
-		}
-	}
-	if err == nil {
-		if is_group {
-			return io.ErrUnexpectedEOF
-		}
-		if state.err != nil {
-			return state.err
-		}
-		if required > 0 {
-			// Not enough information to determine the exact field. If we use extra
-			// CPU, we could determine the field only if the missing required field
-			// has a tag <= 64 and we check reqFields.
-			return &RequiredNotSetError{"{Unknown}"}
-		}
-	}
-	return err
-}
-
-// Individual type decoders
-// For each,
-//	u is the decoded value,
-//	v is a pointer to the field (pointer) in the struct
-
-// Sizes of the pools to allocate inside the Buffer.
-// The goal is modest amortization and allocation
-// on at least 16-byte boundaries.
-const (
-	boolPoolSize   = 16
-	uint32PoolSize = 8
-	uint64PoolSize = 4
-)
-
-// Decode a bool.
-func (o *Buffer) dec_bool(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	if len(o.bools) == 0 {
-		o.bools = make([]bool, boolPoolSize)
-	}
-	o.bools[0] = u != 0
-	*structPointer_Bool(base, p.field) = &o.bools[0]
-	o.bools = o.bools[1:]
-	return nil
-}
-
-func (o *Buffer) dec_proto3_bool(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	*structPointer_BoolVal(base, p.field) = u != 0
-	return nil
-}
-
-// Decode an int32.
-func (o *Buffer) dec_int32(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	word32_Set(structPointer_Word32(base, p.field), o, uint32(u))
-	return nil
-}
-
-func (o *Buffer) dec_proto3_int32(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	word32Val_Set(structPointer_Word32Val(base, p.field), uint32(u))
-	return nil
-}
-
-// Decode an int64.
-func (o *Buffer) dec_int64(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	word64_Set(structPointer_Word64(base, p.field), o, u)
-	return nil
-}
-
-func (o *Buffer) dec_proto3_int64(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	word64Val_Set(structPointer_Word64Val(base, p.field), o, u)
-	return nil
-}
-
-// Decode a string.
-func (o *Buffer) dec_string(p *Properties, base structPointer) error {
-	s, err := o.DecodeStringBytes()
-	if err != nil {
-		return err
-	}
-	*structPointer_String(base, p.field) = &s
-	return nil
-}
-
-func (o *Buffer) dec_proto3_string(p *Properties, base structPointer) error {
-	s, err := o.DecodeStringBytes()
-	if err != nil {
-		return err
-	}
-	*structPointer_StringVal(base, p.field) = s
-	return nil
-}
-
-// Decode a slice of bytes ([]byte).
-func (o *Buffer) dec_slice_byte(p *Properties, base structPointer) error {
-	b, err := o.DecodeRawBytes(true)
-	if err != nil {
-		return err
-	}
-	*structPointer_Bytes(base, p.field) = b
-	return nil
-}
-
-// Decode a slice of bools ([]bool).
-func (o *Buffer) dec_slice_bool(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	v := structPointer_BoolSlice(base, p.field)
-	*v = append(*v, u != 0)
-	return nil
-}
-
-// Decode a slice of bools ([]bool) in packed format.
-func (o *Buffer) dec_slice_packed_bool(p *Properties, base structPointer) error {
-	v := structPointer_BoolSlice(base, p.field)
-
-	nn, err := o.DecodeVarint()
-	if err != nil {
-		return err
-	}
-	nb := int(nn) // number of bytes of encoded bools
-	fin := o.index + nb
-	if fin < o.index {
-		return errOverflow
-	}
-
-	y := *v
-	for o.index < fin {
-		u, err := p.valDec(o)
-		if err != nil {
-			return err
-		}
-		y = append(y, u != 0)
-	}
-
-	*v = y
-	return nil
-}
-
-// Decode a slice of int32s ([]int32).
-func (o *Buffer) dec_slice_int32(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-	structPointer_Word32Slice(base, p.field).Append(uint32(u))
-	return nil
-}
-
-// Decode a slice of int32s ([]int32) in packed format.
-func (o *Buffer) dec_slice_packed_int32(p *Properties, base structPointer) error {
-	v := structPointer_Word32Slice(base, p.field)
-
-	nn, err := o.DecodeVarint()
-	if err != nil {
-		return err
-	}
-	nb := int(nn) // number of bytes of encoded int32s
-
-	fin := o.index + nb
-	if fin < o.index {
-		return errOverflow
-	}
-	for o.index < fin {
-		u, err := p.valDec(o)
-		if err != nil {
-			return err
-		}
-		v.Append(uint32(u))
-	}
-	return nil
-}
-
-// Decode a slice of int64s ([]int64).
-func (o *Buffer) dec_slice_int64(p *Properties, base structPointer) error {
-	u, err := p.valDec(o)
-	if err != nil {
-		return err
-	}
-
-	structPointer_Word64Slice(base, p.field).Append(u)
-	return nil
-}
-
-// Decode a slice of int64s ([]int64) in packed format.
-func (o *Buffer) dec_slice_packed_int64(p *Properties, base structPointer) error {
-	v := structPointer_Word64Slice(base, p.field)
-
-	nn, err := o.DecodeVarint()
-	if err != nil {
-		return err
-	}
-	nb := int(nn) // number of bytes of encoded int64s
-
-	fin := o.index + nb
-	if fin < o.index {
-		return errOverflow
-	}
-	for o.index < fin {
-		u, err := p.valDec(o)
-		if err != nil {
-			return err
-		}
-		v.Append(u)
-	}
-	return nil
-}
-
-// Decode a slice of strings ([]string).
-func (o *Buffer) dec_slice_string(p *Properties, base structPointer) error {
-	s, err := o.DecodeStringBytes()
-	if err != nil {
-		return err
-	}
-	v := structPointer_StringSlice(base, p.field)
-	*v = append(*v, s)
-	return nil
-}
-
-// Decode a slice of slice of bytes ([][]byte).
-func (o *Buffer) dec_slice_slice_byte(p *Properties, base structPointer) error {
-	b, err := o.DecodeRawBytes(true)
-	if err != nil {
-		return err
-	}
-	v := structPointer_BytesSlice(base, p.field)
-	*v = append(*v, b)
-	return nil
-}
-
-// Decode a map field.
-func (o *Buffer) dec_new_map(p *Properties, base structPointer) error {
-	raw, err := o.DecodeRawBytes(false)
-	if err != nil {
-		return err
-	}
-	oi := o.index       // index at the end of this map entry
-	o.index -= len(raw) // move buffer back to start of map entry
-
-	mptr := structPointer_NewAt(base, p.field, p.mtype) // *map[K]V
-	if mptr.Elem().IsNil() {
-		mptr.Elem().Set(reflect.MakeMap(mptr.Type().Elem()))
-	}
-	v := mptr.Elem() // map[K]V
-
-	// Prepare addressable doubly-indirect placeholders for the key and value types.
-	// See enc_new_map for why.
-	keyptr := reflect.New(reflect.PtrTo(p.mtype.Key())).Elem() // addressable *K
-	keybase := toStructPointer(keyptr.Addr())                  // **K
-
-	var valbase structPointer
-	var valptr reflect.Value
-	switch p.mtype.Elem().Kind() {
-	case reflect.Slice:
-		// []byte
-		var dummy []byte
-		valptr = reflect.ValueOf(&dummy)  // *[]byte
-		valbase = toStructPointer(valptr) // *[]byte
-	case reflect.Ptr:
-		// message; valptr is **Msg; need to allocate the intermediate pointer
-		valptr = reflect.New(reflect.PtrTo(p.mtype.Elem())).Elem() // addressable *V
-		valptr.Set(reflect.New(valptr.Type().Elem()))
-		valbase = toStructPointer(valptr)
-	default:
-		// everything else
-		valptr = reflect.New(reflect.PtrTo(p.mtype.Elem())).Elem() // addressable *V
-		valbase = toStructPointer(valptr.Addr())                   // **V
-	}
-
-	// Decode.
-	// This parses a restricted wire format, namely the encoding of a message
-	// with two fields. See enc_new_map for the format.
-	for o.index < oi {
-		// tagcode for key and value properties are always a single byte
-		// because they have tags 1 and 2.
-		tagcode := o.buf[o.index]
-		o.index++
-		switch tagcode {
-		case p.mkeyprop.tagcode[0]:
-			if err := p.mkeyprop.dec(o, p.mkeyprop, keybase); err != nil {
-				return err
-			}
-		case p.mvalprop.tagcode[0]:
-			if err := p.mvalprop.dec(o, p.mvalprop, valbase); err != nil {
-				return err
-			}
-		default:
-			// TODO: Should we silently skip this instead?
-			return fmt.Errorf("proto: bad map data tag %d", raw[0])
-		}
-	}
-	keyelem, valelem := keyptr.Elem(), valptr.Elem()
-	if !keyelem.IsValid() {
-		keyelem = reflect.Zero(p.mtype.Key())
-	}
-	if !valelem.IsValid() {
-		valelem = reflect.Zero(p.mtype.Elem())
-	}
-
-	v.SetMapIndex(keyelem, valelem)
-	return nil
-}
-
-// Decode a group.
-func (o *Buffer) dec_struct_group(p *Properties, base structPointer) error {
-	bas := structPointer_GetStructPointer(base, p.field)
-	if structPointer_IsNil(bas) {
-		// allocate new nested message
-		bas = toStructPointer(reflect.New(p.stype))
-		structPointer_SetStructPointer(base, p.field, bas)
-	}
-	return o.unmarshalType(p.stype, p.sprop, true, bas)
-}
-
-// Decode an embedded message.
-func (o *Buffer) dec_struct_message(p *Properties, base structPointer) (err error) {
-	raw, e := o.DecodeRawBytes(false)
-	if e != nil {
-		return e
-	}
-
-	bas := structPointer_GetStructPointer(base, p.field)
-	if structPointer_IsNil(bas) {
-		// allocate new nested message
-		bas = toStructPointer(reflect.New(p.stype))
-		structPointer_SetStructPointer(base, p.field, bas)
-	}
-
-	// If the object can unmarshal itself, let it.
-	if p.isUnmarshaler {
-		iv := structPointer_Interface(bas, p.stype)
-		return iv.(Unmarshaler).Unmarshal(raw)
-	}
-
-	obuf := o.buf
-	oi := o.index
-	o.buf = raw
-	o.index = 0
-
-	err = o.unmarshalType(p.stype, p.sprop, false, bas)
-	o.buf = obuf
-	o.index = oi
-
-	return err
-}
-
-// Decode a slice of embedded messages.
-func (o *Buffer) dec_slice_struct_message(p *Properties, base structPointer) error {
-	return o.dec_slice_struct(p, false, base)
-}
-
-// Decode a slice of embedded groups.
-func (o *Buffer) dec_slice_struct_group(p *Properties, base structPointer) error {
-	return o.dec_slice_struct(p, true, base)
-}
-
-// Decode a slice of structs ([]*struct).
-func (o *Buffer) dec_slice_struct(p *Properties, is_group bool, base structPointer) error {
-	v := reflect.New(p.stype)
-	bas := toStructPointer(v)
-	structPointer_StructPointerSlice(base, p.field).Append(bas)
-
-	if is_group {
-		err := o.unmarshalType(p.stype, p.sprop, is_group, bas)
-		return err
-	}
-
-	raw, err := o.DecodeRawBytes(false)
-	if err != nil {
-		return err
-	}
-
-	// If the object can unmarshal itself, let it.
-	if p.isUnmarshaler {
-		iv := v.Interface()
-		return iv.(Unmarshaler).Unmarshal(raw)
-	}
-
-	obuf := o.buf
-	oi := o.index
-	o.buf = raw
-	o.index = 0
-
-	err = o.unmarshalType(p.stype, p.sprop, is_group, bas)
-
-	o.buf = obuf
-	o.index = oi
-
-	return err
-}

vendor/github.com/golang/protobuf/proto/equal.go

@@ -1,300 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer comparison.
-
-package proto
-
-import (
-	"bytes"
-	"log"
-	"reflect"
-	"strings"
-)
-
-/*
-Equal returns true iff protocol buffers a and b are equal.
-The arguments must both be pointers to protocol buffer structs.
-
-Equality is defined in this way:
-  - Two messages are equal iff they are the same type,
-    corresponding fields are equal, unknown field sets
-    are equal, and extensions sets are equal.
-  - Two set scalar fields are equal iff their values are equal.
-    If the fields are of a floating-point type, remember that
-    NaN != x for all x, including NaN. If the message is defined
-    in a proto3 .proto file, fields are not "set"; specifically,
-    zero length proto3 "bytes" fields are equal (nil == {}).
-  - Two repeated fields are equal iff their lengths are the same,
-    and their corresponding elements are equal. Note a "bytes" field,
-    although represented by []byte, is not a repeated field and the
-    rule for the scalar fields described above applies.
-  - Two unset fields are equal.
-  - Two unknown field sets are equal if their current
-    encoded state is equal.
-  - Two extension sets are equal iff they have corresponding
-    elements that are pairwise equal.
-  - Two map fields are equal iff their lengths are the same,
-    and they contain the same set of elements. Zero-length map
-    fields are equal.
-  - Every other combination of things are not equal.
-
-The return value is undefined if a and b are not protocol buffers.
-*/
-func Equal(a, b Message) bool {
-	if a == nil || b == nil {
-		return a == b
-	}
-	v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
-	if v1.Type() != v2.Type() {
-		return false
-	}
-	if v1.Kind() == reflect.Ptr {
-		if v1.IsNil() {
-			return v2.IsNil()
-		}
-		if v2.IsNil() {
-			return false
-		}
-		v1, v2 = v1.Elem(), v2.Elem()
-	}
-	if v1.Kind() != reflect.Struct {
-		return false
-	}
-	return equalStruct(v1, v2)
-}
-
-// v1 and v2 are known to have the same type.
-func equalStruct(v1, v2 reflect.Value) bool {
-	sprop := GetProperties(v1.Type())
-	for i := 0; i < v1.NumField(); i++ {
-		f := v1.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		f1, f2 := v1.Field(i), v2.Field(i)
-		if f.Type.Kind() == reflect.Ptr {
-			if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
-				// both unset
-				continue
-			} else if n1 != n2 {
-				// set/unset mismatch
-				return false
-			}
-			b1, ok := f1.Interface().(raw)
-			if ok {
-				b2 := f2.Interface().(raw)
-				// RawMessage
-				if !bytes.Equal(b1.Bytes(), b2.Bytes()) {
-					return false
-				}
-				continue
-			}
-			f1, f2 = f1.Elem(), f2.Elem()
-		}
-		if !equalAny(f1, f2, sprop.Prop[i]) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_InternalExtensions")
-		if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_extensions")
-		if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
-			return false
-		}
-	}
-
-	uf := v1.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return true
-	}
-
-	u1 := uf.Bytes()
-	u2 := v2.FieldByName("XXX_unrecognized").Bytes()
-	if !bytes.Equal(u1, u2) {
-		return false
-	}
-
-	return true
-}
-
-// v1 and v2 are known to have the same type.
-// prop may be nil.
-func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
-	if v1.Type() == protoMessageType {
-		m1, _ := v1.Interface().(Message)
-		m2, _ := v2.Interface().(Message)
-		return Equal(m1, m2)
-	}
-	switch v1.Kind() {
-	case reflect.Bool:
-		return v1.Bool() == v2.Bool()
-	case reflect.Float32, reflect.Float64:
-		return v1.Float() == v2.Float()
-	case reflect.Int32, reflect.Int64:
-		return v1.Int() == v2.Int()
-	case reflect.Interface:
-		// Probably a oneof field; compare the inner values.
-		n1, n2 := v1.IsNil(), v2.IsNil()
-		if n1 || n2 {
-			return n1 == n2
-		}
-		e1, e2 := v1.Elem(), v2.Elem()
-		if e1.Type() != e2.Type() {
-			return false
-		}
-		return equalAny(e1, e2, nil)
-	case reflect.Map:
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for _, key := range v1.MapKeys() {
-			val2 := v2.MapIndex(key)
-			if !val2.IsValid() {
-				// This key was not found in the second map.
-				return false
-			}
-			if !equalAny(v1.MapIndex(key), val2, nil) {
-				return false
-			}
-		}
-		return true
-	case reflect.Ptr:
-		// Maps may have nil values in them, so check for nil.
-		if v1.IsNil() && v2.IsNil() {
-			return true
-		}
-		if v1.IsNil() != v2.IsNil() {
-			return false
-		}
-		return equalAny(v1.Elem(), v2.Elem(), prop)
-	case reflect.Slice:
-		if v1.Type().Elem().Kind() == reflect.Uint8 {
-			// short circuit: []byte
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value.
-			if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
-				return true
-			}
-			if v1.IsNil() != v2.IsNil() {
-				return false
-			}
-			return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
-		}
-
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for i := 0; i < v1.Len(); i++ {
-			if !equalAny(v1.Index(i), v2.Index(i), prop) {
-				return false
-			}
-		}
-		return true
-	case reflect.String:
-		return v1.Interface().(string) == v2.Interface().(string)
-	case reflect.Struct:
-		return equalStruct(v1, v2)
-	case reflect.Uint32, reflect.Uint64:
-		return v1.Uint() == v2.Uint()
-	}
-
-	// unknown type, so not a protocol buffer
-	log.Printf("proto: don't know how to compare %v", v1)
-	return false
-}
-
-// base is the struct type that the extensions are based on.
-// x1 and x2 are InternalExtensions.
-func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
-	em1, _ := x1.extensionsRead()
-	em2, _ := x2.extensionsRead()
-	return equalExtMap(base, em1, em2)
-}
-
-func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
-	if len(em1) != len(em2) {
-		return false
-	}
-
-	for extNum, e1 := range em1 {
-		e2, ok := em2[extNum]
-		if !ok {
-			return false
-		}
-
-		m1, m2 := e1.value, e2.value
-
-		if m1 != nil && m2 != nil {
-			// Both are unencoded.
-			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-				return false
-			}
-			continue
-		}
-
-		// At least one is encoded. To do a semantically correct comparison
-		// we need to unmarshal them first.
-		var desc *ExtensionDesc
-		if m := extensionMaps[base]; m != nil {
-			desc = m[extNum]
-		}
-		if desc == nil {
-			log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
-			continue
-		}
-		var err error
-		if m1 == nil {
-			m1, err = decodeExtension(e1.enc, desc)
-		}
-		if m2 == nil && err == nil {
-			m2, err = decodeExtension(e2.enc, desc)
-		}
-		if err != nil {
-			// The encoded form is invalid.
-			log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
-			return false
-		}
-		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-			return false
-		}
-	}
-
-	return true
-}

vendor/github.com/golang/protobuf/proto/extensions.go

@@ -1,587 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Types and routines for supporting protocol buffer extensions.
- */
-
-import (
-	"errors"
-	"fmt"
-	"reflect"
-	"strconv"
-	"sync"
-)
-
-// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
-var ErrMissingExtension = errors.New("proto: missing extension")
-
-// ExtensionRange represents a range of message extensions for a protocol buffer.
-// Used in code generated by the protocol compiler.
-type ExtensionRange struct {
-	Start, End int32 // both inclusive
-}
-
-// extendableProto is an interface implemented by any protocol buffer generated by the current
-// proto compiler that may be extended.
-type extendableProto interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	extensionsWrite() map[int32]Extension
-	extensionsRead() (map[int32]Extension, sync.Locker)
-}
-
-// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
-// version of the proto compiler that may be extended.
-type extendableProtoV1 interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	ExtensionMap() map[int32]Extension
-}
-
-// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
-type extensionAdapter struct {
-	extendableProtoV1
-}
-
-func (e extensionAdapter) extensionsWrite() map[int32]Extension {
-	return e.ExtensionMap()
-}
-
-func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
-	return e.ExtensionMap(), notLocker{}
-}
-
-// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
-type notLocker struct{}
-
-func (n notLocker) Lock()   {}
-func (n notLocker) Unlock() {}
-
-// extendable returns the extendableProto interface for the given generated proto message.
-// If the proto message has the old extension format, it returns a wrapper that implements
-// the extendableProto interface.
-func extendable(p interface{}) (extendableProto, bool) {
-	if ep, ok := p.(extendableProto); ok {
-		return ep, ok
-	}
-	if ep, ok := p.(extendableProtoV1); ok {
-		return extensionAdapter{ep}, ok
-	}
-	return nil, false
-}
-
-// XXX_InternalExtensions is an internal representation of proto extensions.
-//
-// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
-// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
-//
-// The methods of XXX_InternalExtensions are not concurrency safe in general,
-// but calls to logically read-only methods such as has and get may be executed concurrently.
-type XXX_InternalExtensions struct {
-	// The struct must be indirect so that if a user inadvertently copies a
-	// generated message and its embedded XXX_InternalExtensions, they
-	// avoid the mayhem of a copied mutex.
-	//
-	// The mutex serializes all logically read-only operations to p.extensionMap.
-	// It is up to the client to ensure that write operations to p.extensionMap are
-	// mutually exclusive with other accesses.
-	p *struct {
-		mu           sync.Mutex
-		extensionMap map[int32]Extension
-	}
-}
-
-// extensionsWrite returns the extension map, creating it on first use.
-func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
-	if e.p == nil {
-		e.p = new(struct {
-			mu           sync.Mutex
-			extensionMap map[int32]Extension
-		})
-		e.p.extensionMap = make(map[int32]Extension)
-	}
-	return e.p.extensionMap
-}
-
-// extensionsRead returns the extensions map for read-only use.  It may be nil.
-// The caller must hold the returned mutex's lock when accessing Elements within the map.
-func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
-	if e.p == nil {
-		return nil, nil
-	}
-	return e.p.extensionMap, &e.p.mu
-}
-
-var extendableProtoType = reflect.TypeOf((*extendableProto)(nil)).Elem()
-var extendableProtoV1Type = reflect.TypeOf((*extendableProtoV1)(nil)).Elem()
-
-// ExtensionDesc represents an extension specification.
-// Used in generated code from the protocol compiler.
-type ExtensionDesc struct {
-	ExtendedType  Message     // nil pointer to the type that is being extended
-	ExtensionType interface{} // nil pointer to the extension type
-	Field         int32       // field number
-	Name          string      // fully-qualified name of extension, for text formatting
-	Tag           string      // protobuf tag style
-	Filename      string      // name of the file in which the extension is defined
-}
-
-func (ed *ExtensionDesc) repeated() bool {
-	t := reflect.TypeOf(ed.ExtensionType)
-	return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
-}
-
-// Extension represents an extension in a message.
-type Extension struct {
-	// When an extension is stored in a message using SetExtension
-	// only desc and value are set. When the message is marshaled
-	// enc will be set to the encoded form of the message.
-	//
-	// When a message is unmarshaled and contains extensions, each
-	// extension will have only enc set. When such an extension is
-	// accessed using GetExtension (or GetExtensions) desc and value
-	// will be set.
-	desc  *ExtensionDesc
-	value interface{}
-	enc   []byte
-}
-
-// SetRawExtension is for testing only.
-func SetRawExtension(base Message, id int32, b []byte) {
-	epb, ok := extendable(base)
-	if !ok {
-		return
-	}
-	extmap := epb.extensionsWrite()
-	extmap[id] = Extension{enc: b}
-}
-
-// isExtensionField returns true iff the given field number is in an extension range.
-func isExtensionField(pb extendableProto, field int32) bool {
-	for _, er := range pb.ExtensionRangeArray() {
-		if er.Start <= field && field <= er.End {
-			return true
-		}
-	}
-	return false
-}
-
-// checkExtensionTypes checks that the given extension is valid for pb.
-func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
-	var pbi interface{} = pb
-	// Check the extended type.
-	if ea, ok := pbi.(extensionAdapter); ok {
-		pbi = ea.extendableProtoV1
-	}
-	if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
-		return errors.New("proto: bad extended type; " + b.String() + " does not extend " + a.String())
-	}
-	// Check the range.
-	if !isExtensionField(pb, extension.Field) {
-		return errors.New("proto: bad extension number; not in declared ranges")
-	}
-	return nil
-}
-
-// extPropKey is sufficient to uniquely identify an extension.
-type extPropKey struct {
-	base  reflect.Type
-	field int32
-}
-
-var extProp = struct {
-	sync.RWMutex
-	m map[extPropKey]*Properties
-}{
-	m: make(map[extPropKey]*Properties),
-}
-
-func extensionProperties(ed *ExtensionDesc) *Properties {
-	key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
-
-	extProp.RLock()
-	if prop, ok := extProp.m[key]; ok {
-		extProp.RUnlock()
-		return prop
-	}
-	extProp.RUnlock()
-
-	extProp.Lock()
-	defer extProp.Unlock()
-	// Check again.
-	if prop, ok := extProp.m[key]; ok {
-		return prop
-	}
-
-	prop := new(Properties)
-	prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
-	extProp.m[key] = prop
-	return prop
-}
-
-// encode encodes any unmarshaled (unencoded) extensions in e.
-func encodeExtensions(e *XXX_InternalExtensions) error {
-	m, mu := e.extensionsRead()
-	if m == nil {
-		return nil // fast path
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	return encodeExtensionsMap(m)
-}
-
-// encode encodes any unmarshaled (unencoded) extensions in e.
-func encodeExtensionsMap(m map[int32]Extension) error {
-	for k, e := range m {
-		if e.value == nil || e.desc == nil {
-			// Extension is only in its encoded form.
-			continue
-		}
-
-		// We don't skip extensions that have an encoded form set,
-		// because the extension value may have been mutated after
-		// the last time this function was called.
-
-		et := reflect.TypeOf(e.desc.ExtensionType)
-		props := extensionProperties(e.desc)
-
-		p := NewBuffer(nil)
-		// If e.value has type T, the encoder expects a *struct{ X T }.
-		// Pass a *T with a zero field and hope it all works out.
-		x := reflect.New(et)
-		x.Elem().Set(reflect.ValueOf(e.value))
-		if err := props.enc(p, props, toStructPointer(x)); err != nil {
-			return err
-		}
-		e.enc = p.buf
-		m[k] = e
-	}
-	return nil
-}
-
-func extensionsSize(e *XXX_InternalExtensions) (n int) {
-	m, mu := e.extensionsRead()
-	if m == nil {
-		return 0
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	return extensionsMapSize(m)
-}
-
-func extensionsMapSize(m map[int32]Extension) (n int) {
-	for _, e := range m {
-		if e.value == nil || e.desc == nil {
-			// Extension is only in its encoded form.
-			n += len(e.enc)
-			continue
-		}
-
-		// We don't skip extensions that have an encoded form set,
-		// because the extension value may have been mutated after
-		// the last time this function was called.
-
-		et := reflect.TypeOf(e.desc.ExtensionType)
-		props := extensionProperties(e.desc)
-
-		// If e.value has type T, the encoder expects a *struct{ X T }.
-		// Pass a *T with a zero field and hope it all works out.
-		x := reflect.New(et)
-		x.Elem().Set(reflect.ValueOf(e.value))
-		n += props.size(props, toStructPointer(x))
-	}
-	return
-}
-
-// HasExtension returns whether the given extension is present in pb.
-func HasExtension(pb Message, extension *ExtensionDesc) bool {
-	// TODO: Check types, field numbers, etc.?
-	epb, ok := extendable(pb)
-	if !ok {
-		return false
-	}
-	extmap, mu := epb.extensionsRead()
-	if extmap == nil {
-		return false
-	}
-	mu.Lock()
-	_, ok = extmap[extension.Field]
-	mu.Unlock()
-	return ok
-}
-
-// ClearExtension removes the given extension from pb.
-func ClearExtension(pb Message, extension *ExtensionDesc) {
-	epb, ok := extendable(pb)
-	if !ok {
-		return
-	}
-	// TODO: Check types, field numbers, etc.?
-	extmap := epb.extensionsWrite()
-	delete(extmap, extension.Field)
-}
-
-// GetExtension parses and returns the given extension of pb.
-// If the extension is not present and has no default value it returns ErrMissingExtension.
-func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
-	epb, ok := extendable(pb)
-	if !ok {
-		return nil, errors.New("proto: not an extendable proto")
-	}
-
-	if err := checkExtensionTypes(epb, extension); err != nil {
-		return nil, err
-	}
-
-	emap, mu := epb.extensionsRead()
-	if emap == nil {
-		return defaultExtensionValue(extension)
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	e, ok := emap[extension.Field]
-	if !ok {
-		// defaultExtensionValue returns the default value or
-		// ErrMissingExtension if there is no default.
-		return defaultExtensionValue(extension)
-	}
-
-	if e.value != nil {
-		// Already decoded. Check the descriptor, though.
-		if e.desc != extension {
-			// This shouldn't happen. If it does, it means that
-			// GetExtension was called twice with two different
-			// descriptors with the same field number.
-			return nil, errors.New("proto: descriptor conflict")
-		}
-		return e.value, nil
-	}
-
-	v, err := decodeExtension(e.enc, extension)
-	if err != nil {
-		return nil, err
-	}
-
-	// Remember the decoded version and drop the encoded version.
-	// That way it is safe to mutate what we return.
-	e.value = v
-	e.desc = extension
-	e.enc = nil
-	emap[extension.Field] = e
-	return e.value, nil
-}
-
-// defaultExtensionValue returns the default value for extension.
-// If no default for an extension is defined ErrMissingExtension is returned.
-func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
-	t := reflect.TypeOf(extension.ExtensionType)
-	props := extensionProperties(extension)
-
-	sf, _, err := fieldDefault(t, props)
-	if err != nil {
-		return nil, err
-	}
-
-	if sf == nil || sf.value == nil {
-		// There is no default value.
-		return nil, ErrMissingExtension
-	}
-
-	if t.Kind() != reflect.Ptr {
-		// We do not need to return a Ptr, we can directly return sf.value.
-		return sf.value, nil
-	}
-
-	// We need to return an interface{} that is a pointer to sf.value.
-	value := reflect.New(t).Elem()
-	value.Set(reflect.New(value.Type().Elem()))
-	if sf.kind == reflect.Int32 {
-		// We may have an int32 or an enum, but the underlying data is int32.
-		// Since we can't set an int32 into a non int32 reflect.value directly
-		// set it as a int32.
-		value.Elem().SetInt(int64(sf.value.(int32)))
-	} else {
-		value.Elem().Set(reflect.ValueOf(sf.value))
-	}
-	return value.Interface(), nil
-}
-
-// decodeExtension decodes an extension encoded in b.
-func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
-	o := NewBuffer(b)
-
-	t := reflect.TypeOf(extension.ExtensionType)
-
-	props := extensionProperties(extension)
-
-	// t is a pointer to a struct, pointer to basic type or a slice.
-	// Allocate a "field" to store the pointer/slice itself; the
-	// pointer/slice will be stored here. We pass
-	// the address of this field to props.dec.
-	// This passes a zero field and a *t and lets props.dec
-	// interpret it as a *struct{ x t }.
-	value := reflect.New(t).Elem()
-
-	for {
-		// Discard wire type and field number varint. It isn't needed.
-		if _, err := o.DecodeVarint(); err != nil {
-			return nil, err
-		}
-
-		if err := props.dec(o, props, toStructPointer(value.Addr())); err != nil {
-			return nil, err
-		}
-
-		if o.index >= len(o.buf) {
-			break
-		}
-	}
-	return value.Interface(), nil
-}
-
-// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
-// The returned slice has the same length as es; missing extensions will appear as nil elements.
-func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
-	epb, ok := extendable(pb)
-	if !ok {
-		return nil, errors.New("proto: not an extendable proto")
-	}
-	extensions = make([]interface{}, len(es))
-	for i, e := range es {
-		extensions[i], err = GetExtension(epb, e)
-		if err == ErrMissingExtension {
-			err = nil
-		}
-		if err != nil {
-			return
-		}
-	}
-	return
-}
-
-// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
-// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
-// just the Field field, which defines the extension's field number.
-func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
-	epb, ok := extendable(pb)
-	if !ok {
-		return nil, fmt.Errorf("proto: %T is not an extendable proto.Message", pb)
-	}
-	registeredExtensions := RegisteredExtensions(pb)
-
-	emap, mu := epb.extensionsRead()
-	if emap == nil {
-		return nil, nil
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	extensions := make([]*ExtensionDesc, 0, len(emap))
-	for extid, e := range emap {
-		desc := e.desc
-		if desc == nil {
-			desc = registeredExtensions[extid]
-			if desc == nil {
-				desc = &ExtensionDesc{Field: extid}
-			}
-		}
-
-		extensions = append(extensions, desc)
-	}
-	return extensions, nil
-}
-
-// SetExtension sets the specified extension of pb to the specified value.
-func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
-	epb, ok := extendable(pb)
-	if !ok {
-		return errors.New("proto: not an extendable proto")
-	}
-	if err := checkExtensionTypes(epb, extension); err != nil {
-		return err
-	}
-	typ := reflect.TypeOf(extension.ExtensionType)
-	if typ != reflect.TypeOf(value) {
-		return errors.New("proto: bad extension value type")
-	}
-	// nil extension values need to be caught early, because the
-	// encoder can't distinguish an ErrNil due to a nil extension
-	// from an ErrNil due to a missing field. Extensions are
-	// always optional, so the encoder would just swallow the error
-	// and drop all the extensions from the encoded message.
-	if reflect.ValueOf(value).IsNil() {
-		return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
-	}
-
-	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: value}
-	return nil
-}
-
-// ClearAllExtensions clears all extensions from pb.
-func ClearAllExtensions(pb Message) {
-	epb, ok := extendable(pb)
-	if !ok {
-		return
-	}
-	m := epb.extensionsWrite()
-	for k := range m {
-		delete(m, k)
-	}
-}
-
-// A global registry of extensions.
-// The generated code will register the generated descriptors by calling RegisterExtension.
-
-var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
-
-// RegisterExtension is called from the generated code.
-func RegisterExtension(desc *ExtensionDesc) {
-	st := reflect.TypeOf(desc.ExtendedType).Elem()
-	m := extensionMaps[st]
-	if m == nil {
-		m = make(map[int32]*ExtensionDesc)
-		extensionMaps[st] = m
-	}
-	if _, ok := m[desc.Field]; ok {
-		panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
-	}
-	m[desc.Field] = desc
-}
-
-// RegisteredExtensions returns a map of the registered extensions of a
-// protocol buffer struct, indexed by the extension number.
-// The argument pb should be a nil pointer to the struct type.
-func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
-	return extensionMaps[reflect.TypeOf(pb).Elem()]
-}

vendor/github.com/golang/protobuf/proto/lib.go

@@ -1,898 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-/*
-Package proto converts data structures to and from the wire format of
-protocol buffers.  It works in concert with the Go source code generated
-for .proto files by the protocol compiler.
-
-A summary of the properties of the protocol buffer interface
-for a protocol buffer variable v:
-
-  - Names are turned from camel_case to CamelCase for export.
-  - There are no methods on v to set fields; just treat
-	them as structure fields.
-  - There are getters that return a field's value if set,
-	and return the field's default value if unset.
-	The getters work even if the receiver is a nil message.
-  - The zero value for a struct is its correct initialization state.
-	All desired fields must be set before marshaling.
-  - A Reset() method will restore a protobuf struct to its zero state.
-  - Non-repeated fields are pointers to the values; nil means unset.
-	That is, optional or required field int32 f becomes F *int32.
-  - Repeated fields are slices.
-  - Helper functions are available to aid the setting of fields.
-	msg.Foo = proto.String("hello") // set field
-  - Constants are defined to hold the default values of all fields that
-	have them.  They have the form Default_StructName_FieldName.
-	Because the getter methods handle defaulted values,
-	direct use of these constants should be rare.
-  - Enums are given type names and maps from names to values.
-	Enum values are prefixed by the enclosing message's name, or by the
-	enum's type name if it is a top-level enum. Enum types have a String
-	method, and a Enum method to assist in message construction.
-  - Nested messages, groups and enums have type names prefixed with the name of
-	the surrounding message type.
-  - Extensions are given descriptor names that start with E_,
-	followed by an underscore-delimited list of the nested messages
-	that contain it (if any) followed by the CamelCased name of the
-	extension field itself.  HasExtension, ClearExtension, GetExtension
-	and SetExtension are functions for manipulating extensions.
-  - Oneof field sets are given a single field in their message,
-	with distinguished wrapper types for each possible field value.
-  - Marshal and Unmarshal are functions to encode and decode the wire format.
-
-When the .proto file specifies `syntax="proto3"`, there are some differences:
-
-  - Non-repeated fields of non-message type are values instead of pointers.
-  - Getters are only generated for message and oneof fields.
-  - Enum types do not get an Enum method.
-
-The simplest way to describe this is to see an example.
-Given file test.proto, containing
-
-	package example;
-
-	enum FOO { X = 17; }
-
-	message Test {
-	  required string label = 1;
-	  optional int32 type = 2 [default=77];
-	  repeated int64 reps = 3;
-	  optional group OptionalGroup = 4 {
-	    required string RequiredField = 5;
-	  }
-	  oneof union {
-	    int32 number = 6;
-	    string name = 7;
-	  }
-	}
-
-The resulting file, test.pb.go, is:
-
-	package example
-
-	import proto "github.com/golang/protobuf/proto"
-	import math "math"
-
-	type FOO int32
-	const (
-		FOO_X FOO = 17
-	)
-	var FOO_name = map[int32]string{
-		17: "X",
-	}
-	var FOO_value = map[string]int32{
-		"X": 17,
-	}
-
-	func (x FOO) Enum() *FOO {
-		p := new(FOO)
-		*p = x
-		return p
-	}
-	func (x FOO) String() string {
-		return proto.EnumName(FOO_name, int32(x))
-	}
-	func (x *FOO) UnmarshalJSON(data []byte) error {
-		value, err := proto.UnmarshalJSONEnum(FOO_value, data)
-		if err != nil {
-			return err
-		}
-		*x = FOO(value)
-		return nil
-	}
-
-	type Test struct {
-		Label         *string             `protobuf:"bytes,1,req,name=label" json:"label,omitempty"`
-		Type          *int32              `protobuf:"varint,2,opt,name=type,def=77" json:"type,omitempty"`
-		Reps          []int64             `protobuf:"varint,3,rep,name=reps" json:"reps,omitempty"`
-		Optionalgroup *Test_OptionalGroup `protobuf:"group,4,opt,name=OptionalGroup" json:"optionalgroup,omitempty"`
-		// Types that are valid to be assigned to Union:
-		//	*Test_Number
-		//	*Test_Name
-		Union            isTest_Union `protobuf_oneof:"union"`
-		XXX_unrecognized []byte       `json:"-"`
-	}
-	func (m *Test) Reset()         { *m = Test{} }
-	func (m *Test) String() string { return proto.CompactTextString(m) }
-	func (*Test) ProtoMessage() {}
-
-	type isTest_Union interface {
-		isTest_Union()
-	}
-
-	type Test_Number struct {
-		Number int32 `protobuf:"varint,6,opt,name=number"`
-	}
-	type Test_Name struct {
-		Name string `protobuf:"bytes,7,opt,name=name"`
-	}
-
-	func (*Test_Number) isTest_Union() {}
-	func (*Test_Name) isTest_Union()   {}
-
-	func (m *Test) GetUnion() isTest_Union {
-		if m != nil {
-			return m.Union
-		}
-		return nil
-	}
-	const Default_Test_Type int32 = 77
-
-	func (m *Test) GetLabel() string {
-		if m != nil && m.Label != nil {
-			return *m.Label
-		}
-		return ""
-	}
-
-	func (m *Test) GetType() int32 {
-		if m != nil && m.Type != nil {
-			return *m.Type
-		}
-		return Default_Test_Type
-	}
-
-	func (m *Test) GetOptionalgroup() *Test_OptionalGroup {
-		if m != nil {
-			return m.Optionalgroup
-		}
-		return nil
-	}
-
-	type Test_OptionalGroup struct {
-		RequiredField *string `protobuf:"bytes,5,req" json:"RequiredField,omitempty"`
-	}
-	func (m *Test_OptionalGroup) Reset()         { *m = Test_OptionalGroup{} }
-	func (m *Test_OptionalGroup) String() string { return proto.CompactTextString(m) }
-
-	func (m *Test_OptionalGroup) GetRequiredField() string {
-		if m != nil && m.RequiredField != nil {
-			return *m.RequiredField
-		}
-		return ""
-	}
-
-	func (m *Test) GetNumber() int32 {
-		if x, ok := m.GetUnion().(*Test_Number); ok {
-			return x.Number
-		}
-		return 0
-	}
-
-	func (m *Test) GetName() string {
-		if x, ok := m.GetUnion().(*Test_Name); ok {
-			return x.Name
-		}
-		return ""
-	}
-
-	func init() {
-		proto.RegisterEnum("example.FOO", FOO_name, FOO_value)
-	}
-
-To create and play with a Test object:
-
-	package main
-
-	import (
-		"log"
-
-		"github.com/golang/protobuf/proto"
-		pb "./example.pb"
-	)
-
-	func main() {
-		test := &pb.Test{
-			Label: proto.String("hello"),
-			Type:  proto.Int32(17),
-			Reps:  []int64{1, 2, 3},
-			Optionalgroup: &pb.Test_OptionalGroup{
-				RequiredField: proto.String("good bye"),
-			},
-			Union: &pb.Test_Name{"fred"},
-		}
-		data, err := proto.Marshal(test)
-		if err != nil {
-			log.Fatal("marshaling error: ", err)
-		}
-		newTest := &pb.Test{}
-		err = proto.Unmarshal(data, newTest)
-		if err != nil {
-			log.Fatal("unmarshaling error: ", err)
-		}
-		// Now test and newTest contain the same data.
-		if test.GetLabel() != newTest.GetLabel() {
-			log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
-		}
-		// Use a type switch to determine which oneof was set.
-		switch u := test.Union.(type) {
-		case *pb.Test_Number: // u.Number contains the number.
-		case *pb.Test_Name: // u.Name contains the string.
-		}
-		// etc.
-	}
-*/
-package proto
-
-import (
-	"encoding/json"
-	"fmt"
-	"log"
-	"reflect"
-	"sort"
-	"strconv"
-	"sync"
-)
-
-// Message is implemented by generated protocol buffer messages.
-type Message interface {
-	Reset()
-	String() string
-	ProtoMessage()
-}
-
-// Stats records allocation details about the protocol buffer encoders
-// and decoders.  Useful for tuning the library itself.
-type Stats struct {
-	Emalloc uint64 // mallocs in encode
-	Dmalloc uint64 // mallocs in decode
-	Encode  uint64 // number of encodes
-	Decode  uint64 // number of decodes
-	Chit    uint64 // number of cache hits
-	Cmiss   uint64 // number of cache misses
-	Size    uint64 // number of sizes
-}
-
-// Set to true to enable stats collection.
-const collectStats = false
-
-var stats Stats
-
-// GetStats returns a copy of the global Stats structure.
-func GetStats() Stats { return stats }
-
-// A Buffer is a buffer manager for marshaling and unmarshaling
-// protocol buffers.  It may be reused between invocations to
-// reduce memory usage.  It is not necessary to use a Buffer;
-// the global functions Marshal and Unmarshal create a
-// temporary Buffer and are fine for most applications.
-type Buffer struct {
-	buf   []byte // encode/decode byte stream
-	index int    // read point
-
-	// pools of basic types to amortize allocation.
-	bools   []bool
-	uint32s []uint32
-	uint64s []uint64
-
-	// extra pools, only used with pointer_reflect.go
-	int32s   []int32
-	int64s   []int64
-	float32s []float32
-	float64s []float64
-}
-
-// NewBuffer allocates a new Buffer and initializes its internal data to
-// the contents of the argument slice.
-func NewBuffer(e []byte) *Buffer {
-	return &Buffer{buf: e}
-}
-
-// Reset resets the Buffer, ready for marshaling a new protocol buffer.
-func (p *Buffer) Reset() {
-	p.buf = p.buf[0:0] // for reading/writing
-	p.index = 0        // for reading
-}
-
-// SetBuf replaces the internal buffer with the slice,
-// ready for unmarshaling the contents of the slice.
-func (p *Buffer) SetBuf(s []byte) {
-	p.buf = s
-	p.index = 0
-}
-
-// Bytes returns the contents of the Buffer.
-func (p *Buffer) Bytes() []byte { return p.buf }
-
-/*
- * Helper routines for simplifying the creation of optional fields of basic type.
- */
-
-// Bool is a helper routine that allocates a new bool value
-// to store v and returns a pointer to it.
-func Bool(v bool) *bool {
-	return &v
-}
-
-// Int32 is a helper routine that allocates a new int32 value
-// to store v and returns a pointer to it.
-func Int32(v int32) *int32 {
-	return &v
-}
-
-// Int is a helper routine that allocates a new int32 value
-// to store v and returns a pointer to it, but unlike Int32
-// its argument value is an int.
-func Int(v int) *int32 {
-	p := new(int32)
-	*p = int32(v)
-	return p
-}
-
-// Int64 is a helper routine that allocates a new int64 value
-// to store v and returns a pointer to it.
-func Int64(v int64) *int64 {
-	return &v
-}
-
-// Float32 is a helper routine that allocates a new float32 value
-// to store v and returns a pointer to it.
-func Float32(v float32) *float32 {
-	return &v
-}
-
-// Float64 is a helper routine that allocates a new float64 value
-// to store v and returns a pointer to it.
-func Float64(v float64) *float64 {
-	return &v
-}
-
-// Uint32 is a helper routine that allocates a new uint32 value
-// to store v and returns a pointer to it.
-func Uint32(v uint32) *uint32 {
-	return &v
-}
-
-// Uint64 is a helper routine that allocates a new uint64 value
-// to store v and returns a pointer to it.
-func Uint64(v uint64) *uint64 {
-	return &v
-}
-
-// String is a helper routine that allocates a new string value
-// to store v and returns a pointer to it.
-func String(v string) *string {
-	return &v
-}
-
-// EnumName is a helper function to simplify printing protocol buffer enums
-// by name.  Given an enum map and a value, it returns a useful string.
-func EnumName(m map[int32]string, v int32) string {
-	s, ok := m[v]
-	if ok {
-		return s
-	}
-	return strconv.Itoa(int(v))
-}
-
-// UnmarshalJSONEnum is a helper function to simplify recovering enum int values
-// from their JSON-encoded representation. Given a map from the enum's symbolic
-// names to its int values, and a byte buffer containing the JSON-encoded
-// value, it returns an int32 that can be cast to the enum type by the caller.
-//
-// The function can deal with both JSON representations, numeric and symbolic.
-func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
-	if data[0] == '"' {
-		// New style: enums are strings.
-		var repr string
-		if err := json.Unmarshal(data, &repr); err != nil {
-			return -1, err
-		}
-		val, ok := m[repr]
-		if !ok {
-			return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
-		}
-		return val, nil
-	}
-	// Old style: enums are ints.
-	var val int32
-	if err := json.Unmarshal(data, &val); err != nil {
-		return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
-	}
-	return val, nil
-}
-
-// DebugPrint dumps the encoded data in b in a debugging format with a header
-// including the string s. Used in testing but made available for general debugging.
-func (p *Buffer) DebugPrint(s string, b []byte) {
-	var u uint64
-
-	obuf := p.buf
-	index := p.index
-	p.buf = b
-	p.index = 0
-	depth := 0
-
-	fmt.Printf("\n--- %s ---\n", s)
-
-out:
-	for {
-		for i := 0; i < depth; i++ {
-			fmt.Print("  ")
-		}
-
-		index := p.index
-		if index == len(p.buf) {
-			break
-		}
-
-		op, err := p.DecodeVarint()
-		if err != nil {
-			fmt.Printf("%3d: fetching op err %v\n", index, err)
-			break out
-		}
-		tag := op >> 3
-		wire := op & 7
-
-		switch wire {
-		default:
-			fmt.Printf("%3d: t=%3d unknown wire=%d\n",
-				index, tag, wire)
-			break out
-
-		case WireBytes:
-			var r []byte
-
-			r, err = p.DecodeRawBytes(false)
-			if err != nil {
-				break out
-			}
-			fmt.Printf("%3d: t=%3d bytes [%d]", index, tag, len(r))
-			if len(r) <= 6 {
-				for i := 0; i < len(r); i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-			} else {
-				for i := 0; i < 3; i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-				fmt.Printf(" ..")
-				for i := len(r) - 3; i < len(r); i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-			}
-			fmt.Printf("\n")
-
-		case WireFixed32:
-			u, err = p.DecodeFixed32()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d fix32 err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d fix32 %d\n", index, tag, u)
-
-		case WireFixed64:
-			u, err = p.DecodeFixed64()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d fix64 err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d fix64 %d\n", index, tag, u)
-
-		case WireVarint:
-			u, err = p.DecodeVarint()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d varint err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d varint %d\n", index, tag, u)
-
-		case WireStartGroup:
-			fmt.Printf("%3d: t=%3d start\n", index, tag)
-			depth++
-
-		case WireEndGroup:
-			depth--
-			fmt.Printf("%3d: t=%3d end\n", index, tag)
-		}
-	}
-
-	if depth != 0 {
-		fmt.Printf("%3d: start-end not balanced %d\n", p.index, depth)
-	}
-	fmt.Printf("\n")
-
-	p.buf = obuf
-	p.index = index
-}
-
-// SetDefaults sets unset protocol buffer fields to their default values.
-// It only modifies fields that are both unset and have defined defaults.
-// It recursively sets default values in any non-nil sub-messages.
-func SetDefaults(pb Message) {
-	setDefaults(reflect.ValueOf(pb), true, false)
-}
-
-// v is a pointer to a struct.
-func setDefaults(v reflect.Value, recur, zeros bool) {
-	v = v.Elem()
-
-	defaultMu.RLock()
-	dm, ok := defaults[v.Type()]
-	defaultMu.RUnlock()
-	if !ok {
-		dm = buildDefaultMessage(v.Type())
-		defaultMu.Lock()
-		defaults[v.Type()] = dm
-		defaultMu.Unlock()
-	}
-
-	for _, sf := range dm.scalars {
-		f := v.Field(sf.index)
-		if !f.IsNil() {
-			// field already set
-			continue
-		}
-		dv := sf.value
-		if dv == nil && !zeros {
-			// no explicit default, and don't want to set zeros
-			continue
-		}
-		fptr := f.Addr().Interface() // **T
-		// TODO: Consider batching the allocations we do here.
-		switch sf.kind {
-		case reflect.Bool:
-			b := new(bool)
-			if dv != nil {
-				*b = dv.(bool)
-			}
-			*(fptr.(**bool)) = b
-		case reflect.Float32:
-			f := new(float32)
-			if dv != nil {
-				*f = dv.(float32)
-			}
-			*(fptr.(**float32)) = f
-		case reflect.Float64:
-			f := new(float64)
-			if dv != nil {
-				*f = dv.(float64)
-			}
-			*(fptr.(**float64)) = f
-		case reflect.Int32:
-			// might be an enum
-			if ft := f.Type(); ft != int32PtrType {
-				// enum
-				f.Set(reflect.New(ft.Elem()))
-				if dv != nil {
-					f.Elem().SetInt(int64(dv.(int32)))
-				}
-			} else {
-				// int32 field
-				i := new(int32)
-				if dv != nil {
-					*i = dv.(int32)
-				}
-				*(fptr.(**int32)) = i
-			}
-		case reflect.Int64:
-			i := new(int64)
-			if dv != nil {
-				*i = dv.(int64)
-			}
-			*(fptr.(**int64)) = i
-		case reflect.String:
-			s := new(string)
-			if dv != nil {
-				*s = dv.(string)
-			}
-			*(fptr.(**string)) = s
-		case reflect.Uint8:
-			// exceptional case: []byte
-			var b []byte
-			if dv != nil {
-				db := dv.([]byte)
-				b = make([]byte, len(db))
-				copy(b, db)
-			} else {
-				b = []byte{}
-			}
-			*(fptr.(*[]byte)) = b
-		case reflect.Uint32:
-			u := new(uint32)
-			if dv != nil {
-				*u = dv.(uint32)
-			}
-			*(fptr.(**uint32)) = u
-		case reflect.Uint64:
-			u := new(uint64)
-			if dv != nil {
-				*u = dv.(uint64)
-			}
-			*(fptr.(**uint64)) = u
-		default:
-			log.Printf("proto: can't set default for field %v (sf.kind=%v)", f, sf.kind)
-		}
-	}
-
-	for _, ni := range dm.nested {
-		f := v.Field(ni)
-		// f is *T or []*T or map[T]*T
-		switch f.Kind() {
-		case reflect.Ptr:
-			if f.IsNil() {
-				continue
-			}
-			setDefaults(f, recur, zeros)
-
-		case reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				e := f.Index(i)
-				if e.IsNil() {
-					continue
-				}
-				setDefaults(e, recur, zeros)
-			}
-
-		case reflect.Map:
-			for _, k := range f.MapKeys() {
-				e := f.MapIndex(k)
-				if e.IsNil() {
-					continue
-				}
-				setDefaults(e, recur, zeros)
-			}
-		}
-	}
-}
-
-var (
-	// defaults maps a protocol buffer struct type to a slice of the fields,
-	// with its scalar fields set to their proto-declared non-zero default values.
-	defaultMu sync.RWMutex
-	defaults  = make(map[reflect.Type]defaultMessage)
-
-	int32PtrType = reflect.TypeOf((*int32)(nil))
-)
-
-// defaultMessage represents information about the default values of a message.
-type defaultMessage struct {
-	scalars []scalarField
-	nested  []int // struct field index of nested messages
-}
-
-type scalarField struct {
-	index int          // struct field index
-	kind  reflect.Kind // element type (the T in *T or []T)
-	value interface{}  // the proto-declared default value, or nil
-}
-
-// t is a struct type.
-func buildDefaultMessage(t reflect.Type) (dm defaultMessage) {
-	sprop := GetProperties(t)
-	for _, prop := range sprop.Prop {
-		fi, ok := sprop.decoderTags.get(prop.Tag)
-		if !ok {
-			// XXX_unrecognized
-			continue
-		}
-		ft := t.Field(fi).Type
-
-		sf, nested, err := fieldDefault(ft, prop)
-		switch {
-		case err != nil:
-			log.Print(err)
-		case nested:
-			dm.nested = append(dm.nested, fi)
-		case sf != nil:
-			sf.index = fi
-			dm.scalars = append(dm.scalars, *sf)
-		}
-	}
-
-	return dm
-}
-
-// fieldDefault returns the scalarField for field type ft.
-// sf will be nil if the field can not have a default.
-// nestedMessage will be true if this is a nested message.
-// Note that sf.index is not set on return.
-func fieldDefault(ft reflect.Type, prop *Properties) (sf *scalarField, nestedMessage bool, err error) {
-	var canHaveDefault bool
-	switch ft.Kind() {
-	case reflect.Ptr:
-		if ft.Elem().Kind() == reflect.Struct {
-			nestedMessage = true
-		} else {
-			canHaveDefault = true // proto2 scalar field
-		}
-
-	case reflect.Slice:
-		switch ft.Elem().Kind() {
-		case reflect.Ptr:
-			nestedMessage = true // repeated message
-		case reflect.Uint8:
-			canHaveDefault = true // bytes field
-		}
-
-	case reflect.Map:
-		if ft.Elem().Kind() == reflect.Ptr {
-			nestedMessage = true // map with message values
-		}
-	}
-
-	if !canHaveDefault {
-		if nestedMessage {
-			return nil, true, nil
-		}
-		return nil, false, nil
-	}
-
-	// We now know that ft is a pointer or slice.
-	sf = &scalarField{kind: ft.Elem().Kind()}
-
-	// scalar fields without defaults
-	if !prop.HasDefault {
-		return sf, false, nil
-	}
-
-	// a scalar field: either *T or []byte
-	switch ft.Elem().Kind() {
-	case reflect.Bool:
-		x, err := strconv.ParseBool(prop.Default)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default bool %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.Float32:
-		x, err := strconv.ParseFloat(prop.Default, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default float32 %q: %v", prop.Default, err)
-		}
-		sf.value = float32(x)
-	case reflect.Float64:
-		x, err := strconv.ParseFloat(prop.Default, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default float64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.Int32:
-		x, err := strconv.ParseInt(prop.Default, 10, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default int32 %q: %v", prop.Default, err)
-		}
-		sf.value = int32(x)
-	case reflect.Int64:
-		x, err := strconv.ParseInt(prop.Default, 10, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default int64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.String:
-		sf.value = prop.Default
-	case reflect.Uint8:
-		// []byte (not *uint8)
-		sf.value = []byte(prop.Default)
-	case reflect.Uint32:
-		x, err := strconv.ParseUint(prop.Default, 10, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default uint32 %q: %v", prop.Default, err)
-		}
-		sf.value = uint32(x)
-	case reflect.Uint64:
-		x, err := strconv.ParseUint(prop.Default, 10, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default uint64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	default:
-		return nil, false, fmt.Errorf("proto: unhandled def kind %v", ft.Elem().Kind())
-	}
-
-	return sf, false, nil
-}
-
-// Map fields may have key types of non-float scalars, strings and enums.
-// The easiest way to sort them in some deterministic order is to use fmt.
-// If this turns out to be inefficient we can always consider other options,
-// such as doing a Schwartzian transform.
-
-func mapKeys(vs []reflect.Value) sort.Interface {
-	s := mapKeySorter{
-		vs: vs,
-		// default Less function: textual comparison
-		less: func(a, b reflect.Value) bool {
-			return fmt.Sprint(a.Interface()) < fmt.Sprint(b.Interface())
-		},
-	}
-
-	// Type specialization per https://developers.google.com/protocol-buffers/docs/proto#maps;
-	// numeric keys are sorted numerically.
-	if len(vs) == 0 {
-		return s
-	}
-	switch vs[0].Kind() {
-	case reflect.Int32, reflect.Int64:
-		s.less = func(a, b reflect.Value) bool { return a.Int() < b.Int() }
-	case reflect.Uint32, reflect.Uint64:
-		s.less = func(a, b reflect.Value) bool { return a.Uint() < b.Uint() }
-	}
-
-	return s
-}
-
-type mapKeySorter struct {
-	vs   []reflect.Value
-	less func(a, b reflect.Value) bool
-}
-
-func (s mapKeySorter) Len() int      { return len(s.vs) }
-func (s mapKeySorter) Swap(i, j int) { s.vs[i], s.vs[j] = s.vs[j], s.vs[i] }
-func (s mapKeySorter) Less(i, j int) bool {
-	return s.less(s.vs[i], s.vs[j])
-}
-
-// isProto3Zero reports whether v is a zero proto3 value.
-func isProto3Zero(v reflect.Value) bool {
-	switch v.Kind() {
-	case reflect.Bool:
-		return !v.Bool()
-	case reflect.Int32, reflect.Int64:
-		return v.Int() == 0
-	case reflect.Uint32, reflect.Uint64:
-		return v.Uint() == 0
-	case reflect.Float32, reflect.Float64:
-		return v.Float() == 0
-	case reflect.String:
-		return v.String() == ""
-	}
-	return false
-}
-
-// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion2 = true
-
-// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion1 = true

vendor/github.com/golang/protobuf/proto/message_set.go

@@ -1,311 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Support for message sets.
- */
-
-import (
-	"bytes"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"reflect"
-	"sort"
-)
-
-// errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
-// A message type ID is required for storing a protocol buffer in a message set.
-var errNoMessageTypeID = errors.New("proto does not have a message type ID")
-
-// The first two types (_MessageSet_Item and messageSet)
-// model what the protocol compiler produces for the following protocol message:
-//   message MessageSet {
-//     repeated group Item = 1 {
-//       required int32 type_id = 2;
-//       required string message = 3;
-//     };
-//   }
-// That is the MessageSet wire format. We can't use a proto to generate these
-// because that would introduce a circular dependency between it and this package.
-
-type _MessageSet_Item struct {
-	TypeId  *int32 `protobuf:"varint,2,req,name=type_id"`
-	Message []byte `protobuf:"bytes,3,req,name=message"`
-}
-
-type messageSet struct {
-	Item             []*_MessageSet_Item `protobuf:"group,1,rep"`
-	XXX_unrecognized []byte
-	// TODO: caching?
-}
-
-// Make sure messageSet is a Message.
-var _ Message = (*messageSet)(nil)
-
-// messageTypeIder is an interface satisfied by a protocol buffer type
-// that may be stored in a MessageSet.
-type messageTypeIder interface {
-	MessageTypeId() int32
-}
-
-func (ms *messageSet) find(pb Message) *_MessageSet_Item {
-	mti, ok := pb.(messageTypeIder)
-	if !ok {
-		return nil
-	}
-	id := mti.MessageTypeId()
-	for _, item := range ms.Item {
-		if *item.TypeId == id {
-			return item
-		}
-	}
-	return nil
-}
-
-func (ms *messageSet) Has(pb Message) bool {
-	if ms.find(pb) != nil {
-		return true
-	}
-	return false
-}
-
-func (ms *messageSet) Unmarshal(pb Message) error {
-	if item := ms.find(pb); item != nil {
-		return Unmarshal(item.Message, pb)
-	}
-	if _, ok := pb.(messageTypeIder); !ok {
-		return errNoMessageTypeID
-	}
-	return nil // TODO: return error instead?
-}
-
-func (ms *messageSet) Marshal(pb Message) error {
-	msg, err := Marshal(pb)
-	if err != nil {
-		return err
-	}
-	if item := ms.find(pb); item != nil {
-		// reuse existing item
-		item.Message = msg
-		return nil
-	}
-
-	mti, ok := pb.(messageTypeIder)
-	if !ok {
-		return errNoMessageTypeID
-	}
-
-	mtid := mti.MessageTypeId()
-	ms.Item = append(ms.Item, &_MessageSet_Item{
-		TypeId:  &mtid,
-		Message: msg,
-	})
-	return nil
-}
-
-func (ms *messageSet) Reset()         { *ms = messageSet{} }
-func (ms *messageSet) String() string { return CompactTextString(ms) }
-func (*messageSet) ProtoMessage()     {}
-
-// Support for the message_set_wire_format message option.
-
-func skipVarint(buf []byte) []byte {
-	i := 0
-	for ; buf[i]&0x80 != 0; i++ {
-	}
-	return buf[i+1:]
-}
-
-// MarshalMessageSet encodes the extension map represented by m in the message set wire format.
-// It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSet(exts interface{}) ([]byte, error) {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		if err := encodeExtensions(exts); err != nil {
-			return nil, err
-		}
-		m, _ = exts.extensionsRead()
-	case map[int32]Extension:
-		if err := encodeExtensionsMap(exts); err != nil {
-			return nil, err
-		}
-		m = exts
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-
-	// Sort extension IDs to provide a deterministic encoding.
-	// See also enc_map in encode.go.
-	ids := make([]int, 0, len(m))
-	for id := range m {
-		ids = append(ids, int(id))
-	}
-	sort.Ints(ids)
-
-	ms := &messageSet{Item: make([]*_MessageSet_Item, 0, len(m))}
-	for _, id := range ids {
-		e := m[int32(id)]
-		// Remove the wire type and field number varint, as well as the length varint.
-		msg := skipVarint(skipVarint(e.enc))
-
-		ms.Item = append(ms.Item, &_MessageSet_Item{
-			TypeId:  Int32(int32(id)),
-			Message: msg,
-		})
-	}
-	return Marshal(ms)
-}
-
-// UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
-// It is called by generated Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSet(buf []byte, exts interface{}) error {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		m = exts.extensionsWrite()
-	case map[int32]Extension:
-		m = exts
-	default:
-		return errors.New("proto: not an extension map")
-	}
-
-	ms := new(messageSet)
-	if err := Unmarshal(buf, ms); err != nil {
-		return err
-	}
-	for _, item := range ms.Item {
-		id := *item.TypeId
-		msg := item.Message
-
-		// Restore wire type and field number varint, plus length varint.
-		// Be careful to preserve duplicate items.
-		b := EncodeVarint(uint64(id)<<3 | WireBytes)
-		if ext, ok := m[id]; ok {
-			// Existing data; rip off the tag and length varint
-			// so we join the new data correctly.
-			// We can assume that ext.enc is set because we are unmarshaling.
-			o := ext.enc[len(b):]   // skip wire type and field number
-			_, n := DecodeVarint(o) // calculate length of length varint
-			o = o[n:]               // skip length varint
-			msg = append(o, msg...) // join old data and new data
-		}
-		b = append(b, EncodeVarint(uint64(len(msg)))...)
-		b = append(b, msg...)
-
-		m[id] = Extension{enc: b}
-	}
-	return nil
-}
-
-// MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
-// It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		m, _ = exts.extensionsRead()
-	case map[int32]Extension:
-		m = exts
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-	var b bytes.Buffer
-	b.WriteByte('{')
-
-	// Process the map in key order for deterministic output.
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids)) // int32Slice defined in text.go
-
-	for i, id := range ids {
-		ext := m[id]
-		if i > 0 {
-			b.WriteByte(',')
-		}
-
-		msd, ok := messageSetMap[id]
-		if !ok {
-			// Unknown type; we can't render it, so skip it.
-			continue
-		}
-		fmt.Fprintf(&b, `"[%s]":`, msd.name)
-
-		x := ext.value
-		if x == nil {
-			x = reflect.New(msd.t.Elem()).Interface()
-			if err := Unmarshal(ext.enc, x.(Message)); err != nil {
-				return nil, err
-			}
-		}
-		d, err := json.Marshal(x)
-		if err != nil {
-			return nil, err
-		}
-		b.Write(d)
-	}
-	b.WriteByte('}')
-	return b.Bytes(), nil
-}
-
-// UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
-// It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
-	// Common-case fast path.
-	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
-		return nil
-	}
-
-	// This is fairly tricky, and it's not clear that it is needed.
-	return errors.New("TODO: UnmarshalMessageSetJSON not yet implemented")
-}
-
-// A global registry of types that can be used in a MessageSet.
-
-var messageSetMap = make(map[int32]messageSetDesc)
-
-type messageSetDesc struct {
-	t    reflect.Type // pointer to struct
-	name string
-}
-
-// RegisterMessageSetType is called from the generated code.
-func RegisterMessageSetType(m Message, fieldNum int32, name string) {
-	messageSetMap[fieldNum] = messageSetDesc{
-		t:    reflect.TypeOf(m),
-		name: name,
-	}
-}

vendor/github.com/golang/protobuf/proto/pointer_reflect.go

@@ -1,484 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2012 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// +build appengine js
-
-// This file contains an implementation of proto field accesses using package reflect.
-// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
-// be used on App Engine.
-
-package proto
-
-import (
-	"math"
-	"reflect"
-)
-
-// A structPointer is a pointer to a struct.
-type structPointer struct {
-	v reflect.Value
-}
-
-// toStructPointer returns a structPointer equivalent to the given reflect value.
-// The reflect value must itself be a pointer to a struct.
-func toStructPointer(v reflect.Value) structPointer {
-	return structPointer{v}
-}
-
-// IsNil reports whether p is nil.
-func structPointer_IsNil(p structPointer) bool {
-	return p.v.IsNil()
-}
-
-// Interface returns the struct pointer as an interface value.
-func structPointer_Interface(p structPointer, _ reflect.Type) interface{} {
-	return p.v.Interface()
-}
-
-// A field identifies a field in a struct, accessible from a structPointer.
-// In this implementation, a field is identified by the sequence of field indices
-// passed to reflect's FieldByIndex.
-type field []int
-
-// toField returns a field equivalent to the given reflect field.
-func toField(f *reflect.StructField) field {
-	return f.Index
-}
-
-// invalidField is an invalid field identifier.
-var invalidField = field(nil)
-
-// IsValid reports whether the field identifier is valid.
-func (f field) IsValid() bool { return f != nil }
-
-// field returns the given field in the struct as a reflect value.
-func structPointer_field(p structPointer, f field) reflect.Value {
-	// Special case: an extension map entry with a value of type T
-	// passes a *T to the struct-handling code with a zero field,
-	// expecting that it will be treated as equivalent to *struct{ X T },
-	// which has the same memory layout. We have to handle that case
-	// specially, because reflect will panic if we call FieldByIndex on a
-	// non-struct.
-	if f == nil {
-		return p.v.Elem()
-	}
-
-	return p.v.Elem().FieldByIndex(f)
-}
-
-// ifield returns the given field in the struct as an interface value.
-func structPointer_ifield(p structPointer, f field) interface{} {
-	return structPointer_field(p, f).Addr().Interface()
-}
-
-// Bytes returns the address of a []byte field in the struct.
-func structPointer_Bytes(p structPointer, f field) *[]byte {
-	return structPointer_ifield(p, f).(*[]byte)
-}
-
-// BytesSlice returns the address of a [][]byte field in the struct.
-func structPointer_BytesSlice(p structPointer, f field) *[][]byte {
-	return structPointer_ifield(p, f).(*[][]byte)
-}
-
-// Bool returns the address of a *bool field in the struct.
-func structPointer_Bool(p structPointer, f field) **bool {
-	return structPointer_ifield(p, f).(**bool)
-}
-
-// BoolVal returns the address of a bool field in the struct.
-func structPointer_BoolVal(p structPointer, f field) *bool {
-	return structPointer_ifield(p, f).(*bool)
-}
-
-// BoolSlice returns the address of a []bool field in the struct.
-func structPointer_BoolSlice(p structPointer, f field) *[]bool {
-	return structPointer_ifield(p, f).(*[]bool)
-}
-
-// String returns the address of a *string field in the struct.
-func structPointer_String(p structPointer, f field) **string {
-	return structPointer_ifield(p, f).(**string)
-}
-
-// StringVal returns the address of a string field in the struct.
-func structPointer_StringVal(p structPointer, f field) *string {
-	return structPointer_ifield(p, f).(*string)
-}
-
-// StringSlice returns the address of a []string field in the struct.
-func structPointer_StringSlice(p structPointer, f field) *[]string {
-	return structPointer_ifield(p, f).(*[]string)
-}
-
-// Extensions returns the address of an extension map field in the struct.
-func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
-	return structPointer_ifield(p, f).(*XXX_InternalExtensions)
-}
-
-// ExtMap returns the address of an extension map field in the struct.
-func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
-	return structPointer_ifield(p, f).(*map[int32]Extension)
-}
-
-// NewAt returns the reflect.Value for a pointer to a field in the struct.
-func structPointer_NewAt(p structPointer, f field, typ reflect.Type) reflect.Value {
-	return structPointer_field(p, f).Addr()
-}
-
-// SetStructPointer writes a *struct field in the struct.
-func structPointer_SetStructPointer(p structPointer, f field, q structPointer) {
-	structPointer_field(p, f).Set(q.v)
-}
-
-// GetStructPointer reads a *struct field in the struct.
-func structPointer_GetStructPointer(p structPointer, f field) structPointer {
-	return structPointer{structPointer_field(p, f)}
-}
-
-// StructPointerSlice the address of a []*struct field in the struct.
-func structPointer_StructPointerSlice(p structPointer, f field) structPointerSlice {
-	return structPointerSlice{structPointer_field(p, f)}
-}
-
-// A structPointerSlice represents the address of a slice of pointers to structs
-// (themselves messages or groups). That is, v.Type() is *[]*struct{...}.
-type structPointerSlice struct {
-	v reflect.Value
-}
-
-func (p structPointerSlice) Len() int                  { return p.v.Len() }
-func (p structPointerSlice) Index(i int) structPointer { return structPointer{p.v.Index(i)} }
-func (p structPointerSlice) Append(q structPointer) {
-	p.v.Set(reflect.Append(p.v, q.v))
-}
-
-var (
-	int32Type   = reflect.TypeOf(int32(0))
-	uint32Type  = reflect.TypeOf(uint32(0))
-	float32Type = reflect.TypeOf(float32(0))
-	int64Type   = reflect.TypeOf(int64(0))
-	uint64Type  = reflect.TypeOf(uint64(0))
-	float64Type = reflect.TypeOf(float64(0))
-)
-
-// A word32 represents a field of type *int32, *uint32, *float32, or *enum.
-// That is, v.Type() is *int32, *uint32, *float32, or *enum and v is assignable.
-type word32 struct {
-	v reflect.Value
-}
-
-// IsNil reports whether p is nil.
-func word32_IsNil(p word32) bool {
-	return p.v.IsNil()
-}
-
-// Set sets p to point at a newly allocated word with bits set to x.
-func word32_Set(p word32, o *Buffer, x uint32) {
-	t := p.v.Type().Elem()
-	switch t {
-	case int32Type:
-		if len(o.int32s) == 0 {
-			o.int32s = make([]int32, uint32PoolSize)
-		}
-		o.int32s[0] = int32(x)
-		p.v.Set(reflect.ValueOf(&o.int32s[0]))
-		o.int32s = o.int32s[1:]
-		return
-	case uint32Type:
-		if len(o.uint32s) == 0 {
-			o.uint32s = make([]uint32, uint32PoolSize)
-		}
-		o.uint32s[0] = x
-		p.v.Set(reflect.ValueOf(&o.uint32s[0]))
-		o.uint32s = o.uint32s[1:]
-		return
-	case float32Type:
-		if len(o.float32s) == 0 {
-			o.float32s = make([]float32, uint32PoolSize)
-		}
-		o.float32s[0] = math.Float32frombits(x)
-		p.v.Set(reflect.ValueOf(&o.float32s[0]))
-		o.float32s = o.float32s[1:]
-		return
-	}
-
-	// must be enum
-	p.v.Set(reflect.New(t))
-	p.v.Elem().SetInt(int64(int32(x)))
-}
-
-// Get gets the bits pointed at by p, as a uint32.
-func word32_Get(p word32) uint32 {
-	elem := p.v.Elem()
-	switch elem.Kind() {
-	case reflect.Int32:
-		return uint32(elem.Int())
-	case reflect.Uint32:
-		return uint32(elem.Uint())
-	case reflect.Float32:
-		return math.Float32bits(float32(elem.Float()))
-	}
-	panic("unreachable")
-}
-
-// Word32 returns a reference to a *int32, *uint32, *float32, or *enum field in the struct.
-func structPointer_Word32(p structPointer, f field) word32 {
-	return word32{structPointer_field(p, f)}
-}
-
-// A word32Val represents a field of type int32, uint32, float32, or enum.
-// That is, v.Type() is int32, uint32, float32, or enum and v is assignable.
-type word32Val struct {
-	v reflect.Value
-}
-
-// Set sets *p to x.
-func word32Val_Set(p word32Val, x uint32) {
-	switch p.v.Type() {
-	case int32Type:
-		p.v.SetInt(int64(x))
-		return
-	case uint32Type:
-		p.v.SetUint(uint64(x))
-		return
-	case float32Type:
-		p.v.SetFloat(float64(math.Float32frombits(x)))
-		return
-	}
-
-	// must be enum
-	p.v.SetInt(int64(int32(x)))
-}
-
-// Get gets the bits pointed at by p, as a uint32.
-func word32Val_Get(p word32Val) uint32 {
-	elem := p.v
-	switch elem.Kind() {
-	case reflect.Int32:
-		return uint32(elem.Int())
-	case reflect.Uint32:
-		return uint32(elem.Uint())
-	case reflect.Float32:
-		return math.Float32bits(float32(elem.Float()))
-	}
-	panic("unreachable")
-}
-
-// Word32Val returns a reference to a int32, uint32, float32, or enum field in the struct.
-func structPointer_Word32Val(p structPointer, f field) word32Val {
-	return word32Val{structPointer_field(p, f)}
-}
-
-// A word32Slice is a slice of 32-bit values.
-// That is, v.Type() is []int32, []uint32, []float32, or []enum.
-type word32Slice struct {
-	v reflect.Value
-}
-
-func (p word32Slice) Append(x uint32) {
-	n, m := p.v.Len(), p.v.Cap()
-	if n < m {
-		p.v.SetLen(n + 1)
-	} else {
-		t := p.v.Type().Elem()
-		p.v.Set(reflect.Append(p.v, reflect.Zero(t)))
-	}
-	elem := p.v.Index(n)
-	switch elem.Kind() {
-	case reflect.Int32:
-		elem.SetInt(int64(int32(x)))
-	case reflect.Uint32:
-		elem.SetUint(uint64(x))
-	case reflect.Float32:
-		elem.SetFloat(float64(math.Float32frombits(x)))
-	}
-}
-
-func (p word32Slice) Len() int {
-	return p.v.Len()
-}
-
-func (p word32Slice) Index(i int) uint32 {
-	elem := p.v.Index(i)
-	switch elem.Kind() {
-	case reflect.Int32:
-		return uint32(elem.Int())
-	case reflect.Uint32:
-		return uint32(elem.Uint())
-	case reflect.Float32:
-		return math.Float32bits(float32(elem.Float()))
-	}
-	panic("unreachable")
-}
-
-// Word32Slice returns a reference to a []int32, []uint32, []float32, or []enum field in the struct.
-func structPointer_Word32Slice(p structPointer, f field) word32Slice {
-	return word32Slice{structPointer_field(p, f)}
-}
-
-// word64 is like word32 but for 64-bit values.
-type word64 struct {
-	v reflect.Value
-}
-
-func word64_Set(p word64, o *Buffer, x uint64) {
-	t := p.v.Type().Elem()
-	switch t {
-	case int64Type:
-		if len(o.int64s) == 0 {
-			o.int64s = make([]int64, uint64PoolSize)
-		}
-		o.int64s[0] = int64(x)
-		p.v.Set(reflect.ValueOf(&o.int64s[0]))
-		o.int64s = o.int64s[1:]
-		return
-	case uint64Type:
-		if len(o.uint64s) == 0 {
-			o.uint64s = make([]uint64, uint64PoolSize)
-		}
-		o.uint64s[0] = x
-		p.v.Set(reflect.ValueOf(&o.uint64s[0]))
-		o.uint64s = o.uint64s[1:]
-		return
-	case float64Type:
-		if len(o.float64s) == 0 {
-			o.float64s = make([]float64, uint64PoolSize)
-		}
-		o.float64s[0] = math.Float64frombits(x)
-		p.v.Set(reflect.ValueOf(&o.float64s[0]))
-		o.float64s = o.float64s[1:]
-		return
-	}
-	panic("unreachable")
-}
-
-func word64_IsNil(p word64) bool {
-	return p.v.IsNil()
-}
-
-func word64_Get(p word64) uint64 {
-	elem := p.v.Elem()
-	switch elem.Kind() {
-	case reflect.Int64:
-		return uint64(elem.Int())
-	case reflect.Uint64:
-		return elem.Uint()
-	case reflect.Float64:
-		return math.Float64bits(elem.Float())
-	}
-	panic("unreachable")
-}
-
-func structPointer_Word64(p structPointer, f field) word64 {
-	return word64{structPointer_field(p, f)}
-}
-
-// word64Val is like word32Val but for 64-bit values.
-type word64Val struct {
-	v reflect.Value
-}
-
-func word64Val_Set(p word64Val, o *Buffer, x uint64) {
-	switch p.v.Type() {
-	case int64Type:
-		p.v.SetInt(int64(x))
-		return
-	case uint64Type:
-		p.v.SetUint(x)
-		return
-	case float64Type:
-		p.v.SetFloat(math.Float64frombits(x))
-		return
-	}
-	panic("unreachable")
-}
-
-func word64Val_Get(p word64Val) uint64 {
-	elem := p.v
-	switch elem.Kind() {
-	case reflect.Int64:
-		return uint64(elem.Int())
-	case reflect.Uint64:
-		return elem.Uint()
-	case reflect.Float64:
-		return math.Float64bits(elem.Float())
-	}
-	panic("unreachable")
-}
-
-func structPointer_Word64Val(p structPointer, f field) word64Val {
-	return word64Val{structPointer_field(p, f)}
-}
-
-type word64Slice struct {
-	v reflect.Value
-}
-
-func (p word64Slice) Append(x uint64) {
-	n, m := p.v.Len(), p.v.Cap()
-	if n < m {
-		p.v.SetLen(n + 1)
-	} else {
-		t := p.v.Type().Elem()
-		p.v.Set(reflect.Append(p.v, reflect.Zero(t)))
-	}
-	elem := p.v.Index(n)
-	switch elem.Kind() {
-	case reflect.Int64:
-		elem.SetInt(int64(int64(x)))
-	case reflect.Uint64:
-		elem.SetUint(uint64(x))
-	case reflect.Float64:
-		elem.SetFloat(float64(math.Float64frombits(x)))
-	}
-}
-
-func (p word64Slice) Len() int {
-	return p.v.Len()
-}
-
-func (p word64Slice) Index(i int) uint64 {
-	elem := p.v.Index(i)
-	switch elem.Kind() {
-	case reflect.Int64:
-		return uint64(elem.Int())
-	case reflect.Uint64:
-		return uint64(elem.Uint())
-	case reflect.Float64:
-		return math.Float64bits(float64(elem.Float()))
-	}
-	panic("unreachable")
-}
-
-func structPointer_Word64Slice(p structPointer, f field) word64Slice {
-	return word64Slice{structPointer_field(p, f)}
-}

vendor/github.com/golang/protobuf/proto/pointer_unsafe.go

@@ -1,270 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2012 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// +build !appengine,!js
-
-// This file contains the implementation of the proto field accesses using package unsafe.
-
-package proto
-
-import (
-	"reflect"
-	"unsafe"
-)
-
-// NOTE: These type_Foo functions would more idiomatically be methods,
-// but Go does not allow methods on pointer types, and we must preserve
-// some pointer type for the garbage collector. We use these
-// funcs with clunky names as our poor approximation to methods.
-//
-// An alternative would be
-//	type structPointer struct { p unsafe.Pointer }
-// but that does not registerize as well.
-
-// A structPointer is a pointer to a struct.
-type structPointer unsafe.Pointer
-
-// toStructPointer returns a structPointer equivalent to the given reflect value.
-func toStructPointer(v reflect.Value) structPointer {
-	return structPointer(unsafe.Pointer(v.Pointer()))
-}
-
-// IsNil reports whether p is nil.
-func structPointer_IsNil(p structPointer) bool {
-	return p == nil
-}
-
-// Interface returns the struct pointer, assumed to have element type t,
-// as an interface value.
-func structPointer_Interface(p structPointer, t reflect.Type) interface{} {
-	return reflect.NewAt(t, unsafe.Pointer(p)).Interface()
-}
-
-// A field identifies a field in a struct, accessible from a structPointer.
-// In this implementation, a field is identified by its byte offset from the start of the struct.
-type field uintptr
-
-// toField returns a field equivalent to the given reflect field.
-func toField(f *reflect.StructField) field {
-	return field(f.Offset)
-}
-
-// invalidField is an invalid field identifier.
-const invalidField = ^field(0)
-
-// IsValid reports whether the field identifier is valid.
-func (f field) IsValid() bool {
-	return f != ^field(0)
-}
-
-// Bytes returns the address of a []byte field in the struct.
-func structPointer_Bytes(p structPointer, f field) *[]byte {
-	return (*[]byte)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// BytesSlice returns the address of a [][]byte field in the struct.
-func structPointer_BytesSlice(p structPointer, f field) *[][]byte {
-	return (*[][]byte)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// Bool returns the address of a *bool field in the struct.
-func structPointer_Bool(p structPointer, f field) **bool {
-	return (**bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// BoolVal returns the address of a bool field in the struct.
-func structPointer_BoolVal(p structPointer, f field) *bool {
-	return (*bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// BoolSlice returns the address of a []bool field in the struct.
-func structPointer_BoolSlice(p structPointer, f field) *[]bool {
-	return (*[]bool)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// String returns the address of a *string field in the struct.
-func structPointer_String(p structPointer, f field) **string {
-	return (**string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// StringVal returns the address of a string field in the struct.
-func structPointer_StringVal(p structPointer, f field) *string {
-	return (*string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// StringSlice returns the address of a []string field in the struct.
-func structPointer_StringSlice(p structPointer, f field) *[]string {
-	return (*[]string)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// ExtMap returns the address of an extension map field in the struct.
-func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
-	return (*XXX_InternalExtensions)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
-	return (*map[int32]Extension)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// NewAt returns the reflect.Value for a pointer to a field in the struct.
-func structPointer_NewAt(p structPointer, f field, typ reflect.Type) reflect.Value {
-	return reflect.NewAt(typ, unsafe.Pointer(uintptr(p)+uintptr(f)))
-}
-
-// SetStructPointer writes a *struct field in the struct.
-func structPointer_SetStructPointer(p structPointer, f field, q structPointer) {
-	*(*structPointer)(unsafe.Pointer(uintptr(p) + uintptr(f))) = q
-}
-
-// GetStructPointer reads a *struct field in the struct.
-func structPointer_GetStructPointer(p structPointer, f field) structPointer {
-	return *(*structPointer)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// StructPointerSlice the address of a []*struct field in the struct.
-func structPointer_StructPointerSlice(p structPointer, f field) *structPointerSlice {
-	return (*structPointerSlice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// A structPointerSlice represents a slice of pointers to structs (themselves submessages or groups).
-type structPointerSlice []structPointer
-
-func (v *structPointerSlice) Len() int                  { return len(*v) }
-func (v *structPointerSlice) Index(i int) structPointer { return (*v)[i] }
-func (v *structPointerSlice) Append(p structPointer)    { *v = append(*v, p) }
-
-// A word32 is the address of a "pointer to 32-bit value" field.
-type word32 **uint32
-
-// IsNil reports whether *v is nil.
-func word32_IsNil(p word32) bool {
-	return *p == nil
-}
-
-// Set sets *v to point at a newly allocated word set to x.
-func word32_Set(p word32, o *Buffer, x uint32) {
-	if len(o.uint32s) == 0 {
-		o.uint32s = make([]uint32, uint32PoolSize)
-	}
-	o.uint32s[0] = x
-	*p = &o.uint32s[0]
-	o.uint32s = o.uint32s[1:]
-}
-
-// Get gets the value pointed at by *v.
-func word32_Get(p word32) uint32 {
-	return **p
-}
-
-// Word32 returns the address of a *int32, *uint32, *float32, or *enum field in the struct.
-func structPointer_Word32(p structPointer, f field) word32 {
-	return word32((**uint32)(unsafe.Pointer(uintptr(p) + uintptr(f))))
-}
-
-// A word32Val is the address of a 32-bit value field.
-type word32Val *uint32
-
-// Set sets *p to x.
-func word32Val_Set(p word32Val, x uint32) {
-	*p = x
-}
-
-// Get gets the value pointed at by p.
-func word32Val_Get(p word32Val) uint32 {
-	return *p
-}
-
-// Word32Val returns the address of a *int32, *uint32, *float32, or *enum field in the struct.
-func structPointer_Word32Val(p structPointer, f field) word32Val {
-	return word32Val((*uint32)(unsafe.Pointer(uintptr(p) + uintptr(f))))
-}
-
-// A word32Slice is a slice of 32-bit values.
-type word32Slice []uint32
-
-func (v *word32Slice) Append(x uint32)    { *v = append(*v, x) }
-func (v *word32Slice) Len() int           { return len(*v) }
-func (v *word32Slice) Index(i int) uint32 { return (*v)[i] }
-
-// Word32Slice returns the address of a []int32, []uint32, []float32, or []enum field in the struct.
-func structPointer_Word32Slice(p structPointer, f field) *word32Slice {
-	return (*word32Slice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}
-
-// word64 is like word32 but for 64-bit values.
-type word64 **uint64
-
-func word64_Set(p word64, o *Buffer, x uint64) {
-	if len(o.uint64s) == 0 {
-		o.uint64s = make([]uint64, uint64PoolSize)
-	}
-	o.uint64s[0] = x
-	*p = &o.uint64s[0]
-	o.uint64s = o.uint64s[1:]
-}
-
-func word64_IsNil(p word64) bool {
-	return *p == nil
-}
-
-func word64_Get(p word64) uint64 {
-	return **p
-}
-
-func structPointer_Word64(p structPointer, f field) word64 {
-	return word64((**uint64)(unsafe.Pointer(uintptr(p) + uintptr(f))))
-}
-
-// word64Val is like word32Val but for 64-bit values.
-type word64Val *uint64
-
-func word64Val_Set(p word64Val, o *Buffer, x uint64) {
-	*p = x
-}
-
-func word64Val_Get(p word64Val) uint64 {
-	return *p
-}
-
-func structPointer_Word64Val(p structPointer, f field) word64Val {
-	return word64Val((*uint64)(unsafe.Pointer(uintptr(p) + uintptr(f))))
-}
-
-// word64Slice is like word32Slice but for 64-bit values.
-type word64Slice []uint64
-
-func (v *word64Slice) Append(x uint64)    { *v = append(*v, x) }
-func (v *word64Slice) Len() int           { return len(*v) }
-func (v *word64Slice) Index(i int) uint64 { return (*v)[i] }
-
-func structPointer_Word64Slice(p structPointer, f field) *word64Slice {
-	return (*word64Slice)(unsafe.Pointer(uintptr(p) + uintptr(f)))
-}

vendor/github.com/golang/protobuf/proto/properties.go

@@ -1,872 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for encoding data into the wire format for protocol buffers.
- */
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"reflect"
-	"sort"
-	"strconv"
-	"strings"
-	"sync"
-)
-
-const debug bool = false
-
-// Constants that identify the encoding of a value on the wire.
-const (
-	WireVarint     = 0
-	WireFixed64    = 1
-	WireBytes      = 2
-	WireStartGroup = 3
-	WireEndGroup   = 4
-	WireFixed32    = 5
-)
-
-const startSize = 10 // initial slice/string sizes
-
-// Encoders are defined in encode.go
-// An encoder outputs the full representation of a field, including its
-// tag and encoder type.
-type encoder func(p *Buffer, prop *Properties, base structPointer) error
-
-// A valueEncoder encodes a single integer in a particular encoding.
-type valueEncoder func(o *Buffer, x uint64) error
-
-// Sizers are defined in encode.go
-// A sizer returns the encoded size of a field, including its tag and encoder
-// type.
-type sizer func(prop *Properties, base structPointer) int
-
-// A valueSizer returns the encoded size of a single integer in a particular
-// encoding.
-type valueSizer func(x uint64) int
-
-// Decoders are defined in decode.go
-// A decoder creates a value from its wire representation.
-// Unrecognized subelements are saved in unrec.
-type decoder func(p *Buffer, prop *Properties, base structPointer) error
-
-// A valueDecoder decodes a single integer in a particular encoding.
-type valueDecoder func(o *Buffer) (x uint64, err error)
-
-// A oneofMarshaler does the marshaling for all oneof fields in a message.
-type oneofMarshaler func(Message, *Buffer) error
-
-// A oneofUnmarshaler does the unmarshaling for a oneof field in a message.
-type oneofUnmarshaler func(Message, int, int, *Buffer) (bool, error)
-
-// A oneofSizer does the sizing for all oneof fields in a message.
-type oneofSizer func(Message) int
-
-// tagMap is an optimization over map[int]int for typical protocol buffer
-// use-cases. Encoded protocol buffers are often in tag order with small tag
-// numbers.
-type tagMap struct {
-	fastTags []int
-	slowTags map[int]int
-}
-
-// tagMapFastLimit is the upper bound on the tag number that will be stored in
-// the tagMap slice rather than its map.
-const tagMapFastLimit = 1024
-
-func (p *tagMap) get(t int) (int, bool) {
-	if t > 0 && t < tagMapFastLimit {
-		if t >= len(p.fastTags) {
-			return 0, false
-		}
-		fi := p.fastTags[t]
-		return fi, fi >= 0
-	}
-	fi, ok := p.slowTags[t]
-	return fi, ok
-}
-
-func (p *tagMap) put(t int, fi int) {
-	if t > 0 && t < tagMapFastLimit {
-		for len(p.fastTags) < t+1 {
-			p.fastTags = append(p.fastTags, -1)
-		}
-		p.fastTags[t] = fi
-		return
-	}
-	if p.slowTags == nil {
-		p.slowTags = make(map[int]int)
-	}
-	p.slowTags[t] = fi
-}
-
-// StructProperties represents properties for all the fields of a struct.
-// decoderTags and decoderOrigNames should only be used by the decoder.
-type StructProperties struct {
-	Prop             []*Properties  // properties for each field
-	reqCount         int            // required count
-	decoderTags      tagMap         // map from proto tag to struct field number
-	decoderOrigNames map[string]int // map from original name to struct field number
-	order            []int          // list of struct field numbers in tag order
-	unrecField       field          // field id of the XXX_unrecognized []byte field
-	extendable       bool           // is this an extendable proto
-
-	oneofMarshaler   oneofMarshaler
-	oneofUnmarshaler oneofUnmarshaler
-	oneofSizer       oneofSizer
-	stype            reflect.Type
-
-	// OneofTypes contains information about the oneof fields in this message.
-	// It is keyed by the original name of a field.
-	OneofTypes map[string]*OneofProperties
-}
-
-// OneofProperties represents information about a specific field in a oneof.
-type OneofProperties struct {
-	Type  reflect.Type // pointer to generated struct type for this oneof field
-	Field int          // struct field number of the containing oneof in the message
-	Prop  *Properties
-}
-
-// Implement the sorting interface so we can sort the fields in tag order, as recommended by the spec.
-// See encode.go, (*Buffer).enc_struct.
-
-func (sp *StructProperties) Len() int { return len(sp.order) }
-func (sp *StructProperties) Less(i, j int) bool {
-	return sp.Prop[sp.order[i]].Tag < sp.Prop[sp.order[j]].Tag
-}
-func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order[j], sp.order[i] }
-
-// Properties represents the protocol-specific behavior of a single struct field.
-type Properties struct {
-	Name     string // name of the field, for error messages
-	OrigName string // original name before protocol compiler (always set)
-	JSONName string // name to use for JSON; determined by protoc
-	Wire     string
-	WireType int
-	Tag      int
-	Required bool
-	Optional bool
-	Repeated bool
-	Packed   bool   // relevant for repeated primitives only
-	Enum     string // set for enum types only
-	proto3   bool   // whether this is known to be a proto3 field; set for []byte only
-	oneof    bool   // whether this is a oneof field
-
-	Default    string // default value
-	HasDefault bool   // whether an explicit default was provided
-	def_uint64 uint64
-
-	enc           encoder
-	valEnc        valueEncoder // set for bool and numeric types only
-	field         field
-	tagcode       []byte // encoding of EncodeVarint((Tag<<3)|WireType)
-	tagbuf        [8]byte
-	stype         reflect.Type      // set for struct types only
-	sprop         *StructProperties // set for struct types only
-	isMarshaler   bool
-	isUnmarshaler bool
-
-	mtype    reflect.Type // set for map types only
-	mkeyprop *Properties  // set for map types only
-	mvalprop *Properties  // set for map types only
-
-	size    sizer
-	valSize valueSizer // set for bool and numeric types only
-
-	dec    decoder
-	valDec valueDecoder // set for bool and numeric types only
-
-	// If this is a packable field, this will be the decoder for the packed version of the field.
-	packedDec decoder
-}
-
-// String formats the properties in the protobuf struct field tag style.
-func (p *Properties) String() string {
-	s := p.Wire
-	s = ","
-	s += strconv.Itoa(p.Tag)
-	if p.Required {
-		s += ",req"
-	}
-	if p.Optional {
-		s += ",opt"
-	}
-	if p.Repeated {
-		s += ",rep"
-	}
-	if p.Packed {
-		s += ",packed"
-	}
-	s += ",name=" + p.OrigName
-	if p.JSONName != p.OrigName {
-		s += ",json=" + p.JSONName
-	}
-	if p.proto3 {
-		s += ",proto3"
-	}
-	if p.oneof {
-		s += ",oneof"
-	}
-	if len(p.Enum) > 0 {
-		s += ",enum=" + p.Enum
-	}
-	if p.HasDefault {
-		s += ",def=" + p.Default
-	}
-	return s
-}
-
-// Parse populates p by parsing a string in the protobuf struct field tag style.
-func (p *Properties) Parse(s string) {
-	// "bytes,49,opt,name=foo,def=hello!"
-	fields := strings.Split(s, ",") // breaks def=, but handled below.
-	if len(fields) < 2 {
-		fmt.Fprintf(os.Stderr, "proto: tag has too few fields: %q\n", s)
-		return
-	}
-
-	p.Wire = fields[0]
-	switch p.Wire {
-	case "varint":
-		p.WireType = WireVarint
-		p.valEnc = (*Buffer).EncodeVarint
-		p.valDec = (*Buffer).DecodeVarint
-		p.valSize = sizeVarint
-	case "fixed32":
-		p.WireType = WireFixed32
-		p.valEnc = (*Buffer).EncodeFixed32
-		p.valDec = (*Buffer).DecodeFixed32
-		p.valSize = sizeFixed32
-	case "fixed64":
-		p.WireType = WireFixed64
-		p.valEnc = (*Buffer).EncodeFixed64
-		p.valDec = (*Buffer).DecodeFixed64
-		p.valSize = sizeFixed64
-	case "zigzag32":
-		p.WireType = WireVarint
-		p.valEnc = (*Buffer).EncodeZigzag32
-		p.valDec = (*Buffer).DecodeZigzag32
-		p.valSize = sizeZigzag32
-	case "zigzag64":
-		p.WireType = WireVarint
-		p.valEnc = (*Buffer).EncodeZigzag64
-		p.valDec = (*Buffer).DecodeZigzag64
-		p.valSize = sizeZigzag64
-	case "bytes", "group":
-		p.WireType = WireBytes
-		// no numeric converter for non-numeric types
-	default:
-		fmt.Fprintf(os.Stderr, "proto: tag has unknown wire type: %q\n", s)
-		return
-	}
-
-	var err error
-	p.Tag, err = strconv.Atoi(fields[1])
-	if err != nil {
-		return
-	}
-
-	for i := 2; i < len(fields); i++ {
-		f := fields[i]
-		switch {
-		case f == "req":
-			p.Required = true
-		case f == "opt":
-			p.Optional = true
-		case f == "rep":
-			p.Repeated = true
-		case f == "packed":
-			p.Packed = true
-		case strings.HasPrefix(f, "name="):
-			p.OrigName = f[5:]
-		case strings.HasPrefix(f, "json="):
-			p.JSONName = f[5:]
-		case strings.HasPrefix(f, "enum="):
-			p.Enum = f[5:]
-		case f == "proto3":
-			p.proto3 = true
-		case f == "oneof":
-			p.oneof = true
-		case strings.HasPrefix(f, "def="):
-			p.HasDefault = true
-			p.Default = f[4:] // rest of string
-			if i+1 < len(fields) {
-				// Commas aren't escaped, and def is always last.
-				p.Default += "," + strings.Join(fields[i+1:], ",")
-				break
-			}
-		}
-	}
-}
-
-func logNoSliceEnc(t1, t2 reflect.Type) {
-	fmt.Fprintf(os.Stderr, "proto: no slice oenc for %T = []%T\n", t1, t2)
-}
-
-var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem()
-
-// Initialize the fields for encoding and decoding.
-func (p *Properties) setEncAndDec(typ reflect.Type, f *reflect.StructField, lockGetProp bool) {
-	p.enc = nil
-	p.dec = nil
-	p.size = nil
-
-	switch t1 := typ; t1.Kind() {
-	default:
-		fmt.Fprintf(os.Stderr, "proto: no coders for %v\n", t1)
-
-	// proto3 scalar types
-
-	case reflect.Bool:
-		p.enc = (*Buffer).enc_proto3_bool
-		p.dec = (*Buffer).dec_proto3_bool
-		p.size = size_proto3_bool
-	case reflect.Int32:
-		p.enc = (*Buffer).enc_proto3_int32
-		p.dec = (*Buffer).dec_proto3_int32
-		p.size = size_proto3_int32
-	case reflect.Uint32:
-		p.enc = (*Buffer).enc_proto3_uint32
-		p.dec = (*Buffer).dec_proto3_int32 // can reuse
-		p.size = size_proto3_uint32
-	case reflect.Int64, reflect.Uint64:
-		p.enc = (*Buffer).enc_proto3_int64
-		p.dec = (*Buffer).dec_proto3_int64
-		p.size = size_proto3_int64
-	case reflect.Float32:
-		p.enc = (*Buffer).enc_proto3_uint32 // can just treat them as bits
-		p.dec = (*Buffer).dec_proto3_int32
-		p.size = size_proto3_uint32
-	case reflect.Float64:
-		p.enc = (*Buffer).enc_proto3_int64 // can just treat them as bits
-		p.dec = (*Buffer).dec_proto3_int64
-		p.size = size_proto3_int64
-	case reflect.String:
-		p.enc = (*Buffer).enc_proto3_string
-		p.dec = (*Buffer).dec_proto3_string
-		p.size = size_proto3_string
-
-	case reflect.Ptr:
-		switch t2 := t1.Elem(); t2.Kind() {
-		default:
-			fmt.Fprintf(os.Stderr, "proto: no encoder function for %v -> %v\n", t1, t2)
-			break
-		case reflect.Bool:
-			p.enc = (*Buffer).enc_bool
-			p.dec = (*Buffer).dec_bool
-			p.size = size_bool
-		case reflect.Int32:
-			p.enc = (*Buffer).enc_int32
-			p.dec = (*Buffer).dec_int32
-			p.size = size_int32
-		case reflect.Uint32:
-			p.enc = (*Buffer).enc_uint32
-			p.dec = (*Buffer).dec_int32 // can reuse
-			p.size = size_uint32
-		case reflect.Int64, reflect.Uint64:
-			p.enc = (*Buffer).enc_int64
-			p.dec = (*Buffer).dec_int64
-			p.size = size_int64
-		case reflect.Float32:
-			p.enc = (*Buffer).enc_uint32 // can just treat them as bits
-			p.dec = (*Buffer).dec_int32
-			p.size = size_uint32
-		case reflect.Float64:
-			p.enc = (*Buffer).enc_int64 // can just treat them as bits
-			p.dec = (*Buffer).dec_int64
-			p.size = size_int64
-		case reflect.String:
-			p.enc = (*Buffer).enc_string
-			p.dec = (*Buffer).dec_string
-			p.size = size_string
-		case reflect.Struct:
-			p.stype = t1.Elem()
-			p.isMarshaler = isMarshaler(t1)
-			p.isUnmarshaler = isUnmarshaler(t1)
-			if p.Wire == "bytes" {
-				p.enc = (*Buffer).enc_struct_message
-				p.dec = (*Buffer).dec_struct_message
-				p.size = size_struct_message
-			} else {
-				p.enc = (*Buffer).enc_struct_group
-				p.dec = (*Buffer).dec_struct_group
-				p.size = size_struct_group
-			}
-		}
-
-	case reflect.Slice:
-		switch t2 := t1.Elem(); t2.Kind() {
-		default:
-			logNoSliceEnc(t1, t2)
-			break
-		case reflect.Bool:
-			if p.Packed {
-				p.enc = (*Buffer).enc_slice_packed_bool
-				p.size = size_slice_packed_bool
-			} else {
-				p.enc = (*Buffer).enc_slice_bool
-				p.size = size_slice_bool
-			}
-			p.dec = (*Buffer).dec_slice_bool
-			p.packedDec = (*Buffer).dec_slice_packed_bool
-		case reflect.Int32:
-			if p.Packed {
-				p.enc = (*Buffer).enc_slice_packed_int32
-				p.size = size_slice_packed_int32
-			} else {
-				p.enc = (*Buffer).enc_slice_int32
-				p.size = size_slice_int32
-			}
-			p.dec = (*Buffer).dec_slice_int32
-			p.packedDec = (*Buffer).dec_slice_packed_int32
-		case reflect.Uint32:
-			if p.Packed {
-				p.enc = (*Buffer).enc_slice_packed_uint32
-				p.size = size_slice_packed_uint32
-			} else {
-				p.enc = (*Buffer).enc_slice_uint32
-				p.size = size_slice_uint32
-			}
-			p.dec = (*Buffer).dec_slice_int32
-			p.packedDec = (*Buffer).dec_slice_packed_int32
-		case reflect.Int64, reflect.Uint64:
-			if p.Packed {
-				p.enc = (*Buffer).enc_slice_packed_int64
-				p.size = size_slice_packed_int64
-			} else {
-				p.enc = (*Buffer).enc_slice_int64
-				p.size = size_slice_int64
-			}
-			p.dec = (*Buffer).dec_slice_int64
-			p.packedDec = (*Buffer).dec_slice_packed_int64
-		case reflect.Uint8:
-			p.dec = (*Buffer).dec_slice_byte
-			if p.proto3 {
-				p.enc = (*Buffer).enc_proto3_slice_byte
-				p.size = size_proto3_slice_byte
-			} else {
-				p.enc = (*Buffer).enc_slice_byte
-				p.size = size_slice_byte
-			}
-		case reflect.Float32, reflect.Float64:
-			switch t2.Bits() {
-			case 32:
-				// can just treat them as bits
-				if p.Packed {
-					p.enc = (*Buffer).enc_slice_packed_uint32
-					p.size = size_slice_packed_uint32
-				} else {
-					p.enc = (*Buffer).enc_slice_uint32
-					p.size = size_slice_uint32
-				}
-				p.dec = (*Buffer).dec_slice_int32
-				p.packedDec = (*Buffer).dec_slice_packed_int32
-			case 64:
-				// can just treat them as bits
-				if p.Packed {
-					p.enc = (*Buffer).enc_slice_packed_int64
-					p.size = size_slice_packed_int64
-				} else {
-					p.enc = (*Buffer).enc_slice_int64
-					p.size = size_slice_int64
-				}
-				p.dec = (*Buffer).dec_slice_int64
-				p.packedDec = (*Buffer).dec_slice_packed_int64
-			default:
-				logNoSliceEnc(t1, t2)
-				break
-			}
-		case reflect.String:
-			p.enc = (*Buffer).enc_slice_string
-			p.dec = (*Buffer).dec_slice_string
-			p.size = size_slice_string
-		case reflect.Ptr:
-			switch t3 := t2.Elem(); t3.Kind() {
-			default:
-				fmt.Fprintf(os.Stderr, "proto: no ptr oenc for %T -> %T -> %T\n", t1, t2, t3)
-				break
-			case reflect.Struct:
-				p.stype = t2.Elem()
-				p.isMarshaler = isMarshaler(t2)
-				p.isUnmarshaler = isUnmarshaler(t2)
-				if p.Wire == "bytes" {
-					p.enc = (*Buffer).enc_slice_struct_message
-					p.dec = (*Buffer).dec_slice_struct_message
-					p.size = size_slice_struct_message
-				} else {
-					p.enc = (*Buffer).enc_slice_struct_group
-					p.dec = (*Buffer).dec_slice_struct_group
-					p.size = size_slice_struct_group
-				}
-			}
-		case reflect.Slice:
-			switch t2.Elem().Kind() {
-			default:
-				fmt.Fprintf(os.Stderr, "proto: no slice elem oenc for %T -> %T -> %T\n", t1, t2, t2.Elem())
-				break
-			case reflect.Uint8:
-				p.enc = (*Buffer).enc_slice_slice_byte
-				p.dec = (*Buffer).dec_slice_slice_byte
-				p.size = size_slice_slice_byte
-			}
-		}
-
-	case reflect.Map:
-		p.enc = (*Buffer).enc_new_map
-		p.dec = (*Buffer).dec_new_map
-		p.size = size_new_map
-
-		p.mtype = t1
-		p.mkeyprop = &Properties{}
-		p.mkeyprop.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
-		p.mvalprop = &Properties{}
-		vtype := p.mtype.Elem()
-		if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
-			// The value type is not a message (*T) or bytes ([]byte),
-			// so we need encoders for the pointer to this type.
-			vtype = reflect.PtrTo(vtype)
-		}
-		p.mvalprop.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
-	}
-
-	// precalculate tag code
-	wire := p.WireType
-	if p.Packed {
-		wire = WireBytes
-	}
-	x := uint32(p.Tag)<<3 | uint32(wire)
-	i := 0
-	for i = 0; x > 127; i++ {
-		p.tagbuf[i] = 0x80 | uint8(x&0x7F)
-		x >>= 7
-	}
-	p.tagbuf[i] = uint8(x)
-	p.tagcode = p.tagbuf[0 : i+1]
-
-	if p.stype != nil {
-		if lockGetProp {
-			p.sprop = GetProperties(p.stype)
-		} else {
-			p.sprop = getPropertiesLocked(p.stype)
-		}
-	}
-}
-
-var (
-	marshalerType   = reflect.TypeOf((*Marshaler)(nil)).Elem()
-	unmarshalerType = reflect.TypeOf((*Unmarshaler)(nil)).Elem()
-)
-
-// isMarshaler reports whether type t implements Marshaler.
-func isMarshaler(t reflect.Type) bool {
-	// We're checking for (likely) pointer-receiver methods
-	// so if t is not a pointer, something is very wrong.
-	// The calls above only invoke isMarshaler on pointer types.
-	if t.Kind() != reflect.Ptr {
-		panic("proto: misuse of isMarshaler")
-	}
-	return t.Implements(marshalerType)
-}
-
-// isUnmarshaler reports whether type t implements Unmarshaler.
-func isUnmarshaler(t reflect.Type) bool {
-	// We're checking for (likely) pointer-receiver methods
-	// so if t is not a pointer, something is very wrong.
-	// The calls above only invoke isUnmarshaler on pointer types.
-	if t.Kind() != reflect.Ptr {
-		panic("proto: misuse of isUnmarshaler")
-	}
-	return t.Implements(unmarshalerType)
-}
-
-// Init populates the properties from a protocol buffer struct tag.
-func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) {
-	p.init(typ, name, tag, f, true)
-}
-
-func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructField, lockGetProp bool) {
-	// "bytes,49,opt,def=hello!"
-	p.Name = name
-	p.OrigName = name
-	if f != nil {
-		p.field = toField(f)
-	}
-	if tag == "" {
-		return
-	}
-	p.Parse(tag)
-	p.setEncAndDec(typ, f, lockGetProp)
-}
-
-var (
-	propertiesMu  sync.RWMutex
-	propertiesMap = make(map[reflect.Type]*StructProperties)
-)
-
-// GetProperties returns the list of properties for the type represented by t.
-// t must represent a generated struct type of a protocol message.
-func GetProperties(t reflect.Type) *StructProperties {
-	if t.Kind() != reflect.Struct {
-		panic("proto: type must have kind struct")
-	}
-
-	// Most calls to GetProperties in a long-running program will be
-	// retrieving details for types we have seen before.
-	propertiesMu.RLock()
-	sprop, ok := propertiesMap[t]
-	propertiesMu.RUnlock()
-	if ok {
-		if collectStats {
-			stats.Chit++
-		}
-		return sprop
-	}
-
-	propertiesMu.Lock()
-	sprop = getPropertiesLocked(t)
-	propertiesMu.Unlock()
-	return sprop
-}
-
-// getPropertiesLocked requires that propertiesMu is held.
-func getPropertiesLocked(t reflect.Type) *StructProperties {
-	if prop, ok := propertiesMap[t]; ok {
-		if collectStats {
-			stats.Chit++
-		}
-		return prop
-	}
-	if collectStats {
-		stats.Cmiss++
-	}
-
-	prop := new(StructProperties)
-	// in case of recursive protos, fill this in now.
-	propertiesMap[t] = prop
-
-	// build properties
-	prop.extendable = reflect.PtrTo(t).Implements(extendableProtoType) ||
-		reflect.PtrTo(t).Implements(extendableProtoV1Type)
-	prop.unrecField = invalidField
-	prop.Prop = make([]*Properties, t.NumField())
-	prop.order = make([]int, t.NumField())
-
-	for i := 0; i < t.NumField(); i++ {
-		f := t.Field(i)
-		p := new(Properties)
-		name := f.Name
-		p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
-
-		if f.Name == "XXX_InternalExtensions" { // special case
-			p.enc = (*Buffer).enc_exts
-			p.dec = nil // not needed
-			p.size = size_exts
-		} else if f.Name == "XXX_extensions" { // special case
-			p.enc = (*Buffer).enc_map
-			p.dec = nil // not needed
-			p.size = size_map
-		} else if f.Name == "XXX_unrecognized" { // special case
-			prop.unrecField = toField(&f)
-		}
-		oneof := f.Tag.Get("protobuf_oneof") // special case
-		if oneof != "" {
-			// Oneof fields don't use the traditional protobuf tag.
-			p.OrigName = oneof
-		}
-		prop.Prop[i] = p
-		prop.order[i] = i
-		if debug {
-			print(i, " ", f.Name, " ", t.String(), " ")
-			if p.Tag > 0 {
-				print(p.String())
-			}
-			print("\n")
-		}
-		if p.enc == nil && !strings.HasPrefix(f.Name, "XXX_") && oneof == "" {
-			fmt.Fprintln(os.Stderr, "proto: no encoder for", f.Name, f.Type.String(), "[GetProperties]")
-		}
-	}
-
-	// Re-order prop.order.
-	sort.Sort(prop)
-
-	type oneofMessage interface {
-		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
-	}
-	if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
-		var oots []interface{}
-		prop.oneofMarshaler, prop.oneofUnmarshaler, prop.oneofSizer, oots = om.XXX_OneofFuncs()
-		prop.stype = t
-
-		// Interpret oneof metadata.
-		prop.OneofTypes = make(map[string]*OneofProperties)
-		for _, oot := range oots {
-			oop := &OneofProperties{
-				Type: reflect.ValueOf(oot).Type(), // *T
-				Prop: new(Properties),
-			}
-			sft := oop.Type.Elem().Field(0)
-			oop.Prop.Name = sft.Name
-			oop.Prop.Parse(sft.Tag.Get("protobuf"))
-			// There will be exactly one interface field that
-			// this new value is assignable to.
-			for i := 0; i < t.NumField(); i++ {
-				f := t.Field(i)
-				if f.Type.Kind() != reflect.Interface {
-					continue
-				}
-				if !oop.Type.AssignableTo(f.Type) {
-					continue
-				}
-				oop.Field = i
-				break
-			}
-			prop.OneofTypes[oop.Prop.OrigName] = oop
-		}
-	}
-
-	// build required counts
-	// build tags
-	reqCount := 0
-	prop.decoderOrigNames = make(map[string]int)
-	for i, p := range prop.Prop {
-		if strings.HasPrefix(p.Name, "XXX_") {
-			// Internal fields should not appear in tags/origNames maps.
-			// They are handled specially when encoding and decoding.
-			continue
-		}
-		if p.Required {
-			reqCount++
-		}
-		prop.decoderTags.put(p.Tag, i)
-		prop.decoderOrigNames[p.OrigName] = i
-	}
-	prop.reqCount = reqCount
-
-	return prop
-}
-
-// Return the Properties object for the x[0]'th field of the structure.
-func propByIndex(t reflect.Type, x []int) *Properties {
-	if len(x) != 1 {
-		fmt.Fprintf(os.Stderr, "proto: field index dimension %d (not 1) for type %s\n", len(x), t)
-		return nil
-	}
-	prop := GetProperties(t)
-	return prop.Prop[x[0]]
-}
-
-// Get the address and type of a pointer to a struct from an interface.
-func getbase(pb Message) (t reflect.Type, b structPointer, err error) {
-	if pb == nil {
-		err = ErrNil
-		return
-	}
-	// get the reflect type of the pointer to the struct.
-	t = reflect.TypeOf(pb)
-	// get the address of the struct.
-	value := reflect.ValueOf(pb)
-	b = toStructPointer(value)
-	return
-}
-
-// A global registry of enum types.
-// The generated code will register the generated maps by calling RegisterEnum.
-
-var enumValueMaps = make(map[string]map[string]int32)
-
-// RegisterEnum is called from the generated code to install the enum descriptor
-// maps into the global table to aid parsing text format protocol buffers.
-func RegisterEnum(typeName string, unusedNameMap map[int32]string, valueMap map[string]int32) {
-	if _, ok := enumValueMaps[typeName]; ok {
-		panic("proto: duplicate enum registered: " + typeName)
-	}
-	enumValueMaps[typeName] = valueMap
-}
-
-// EnumValueMap returns the mapping from names to integers of the
-// enum type enumType, or a nil if not found.
-func EnumValueMap(enumType string) map[string]int32 {
-	return enumValueMaps[enumType]
-}
-
-// A registry of all linked message types.
-// The string is a fully-qualified proto name ("pkg.Message").
-var (
-	protoTypes    = make(map[string]reflect.Type)
-	revProtoTypes = make(map[reflect.Type]string)
-)
-
-// RegisterType is called from generated code and maps from the fully qualified
-// proto name to the type (pointer to struct) of the protocol buffer.
-func RegisterType(x Message, name string) {
-	if _, ok := protoTypes[name]; ok {
-		// TODO: Some day, make this a panic.
-		log.Printf("proto: duplicate proto type registered: %s", name)
-		return
-	}
-	t := reflect.TypeOf(x)
-	protoTypes[name] = t
-	revProtoTypes[t] = name
-}
-
-// MessageName returns the fully-qualified proto name for the given message type.
-func MessageName(x Message) string {
-	type xname interface {
-		XXX_MessageName() string
-	}
-	if m, ok := x.(xname); ok {
-		return m.XXX_MessageName()
-	}
-	return revProtoTypes[reflect.TypeOf(x)]
-}
-
-// MessageType returns the message type (pointer to struct) for a named message.
-func MessageType(name string) reflect.Type { return protoTypes[name] }
-
-// A registry of all linked proto files.
-var (
-	protoFiles = make(map[string][]byte) // file name => fileDescriptor
-)
-
-// RegisterFile is called from generated code and maps from the
-// full file name of a .proto file to its compressed FileDescriptorProto.
-func RegisterFile(filename string, fileDescriptor []byte) {
-	protoFiles[filename] = fileDescriptor
-}
-
-// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
-func FileDescriptor(filename string) []byte { return protoFiles[filename] }

vendor/github.com/golang/protobuf/proto/text.go

@@ -1,854 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-// Functions for writing the text protocol buffer format.
-
-import (
-	"bufio"
-	"bytes"
-	"encoding"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"math"
-	"reflect"
-	"sort"
-	"strings"
-)
-
-var (
-	newline         = []byte("\n")
-	spaces          = []byte("                                        ")
-	gtNewline       = []byte(">\n")
-	endBraceNewline = []byte("}\n")
-	backslashN      = []byte{'\\', 'n'}
-	backslashR      = []byte{'\\', 'r'}
-	backslashT      = []byte{'\\', 't'}
-	backslashDQ     = []byte{'\\', '"'}
-	backslashBS     = []byte{'\\', '\\'}
-	posInf          = []byte("inf")
-	negInf          = []byte("-inf")
-	nan             = []byte("nan")
-)
-
-type writer interface {
-	io.Writer
-	WriteByte(byte) error
-}
-
-// textWriter is an io.Writer that tracks its indentation level.
-type textWriter struct {
-	ind      int
-	complete bool // if the current position is a complete line
-	compact  bool // whether to write out as a one-liner
-	w        writer
-}
-
-func (w *textWriter) WriteString(s string) (n int, err error) {
-	if !strings.Contains(s, "\n") {
-		if !w.compact && w.complete {
-			w.writeIndent()
-		}
-		w.complete = false
-		return io.WriteString(w.w, s)
-	}
-	// WriteString is typically called without newlines, so this
-	// codepath and its copy are rare.  We copy to avoid
-	// duplicating all of Write's logic here.
-	return w.Write([]byte(s))
-}
-
-func (w *textWriter) Write(p []byte) (n int, err error) {
-	newlines := bytes.Count(p, newline)
-	if newlines == 0 {
-		if !w.compact && w.complete {
-			w.writeIndent()
-		}
-		n, err = w.w.Write(p)
-		w.complete = false
-		return n, err
-	}
-
-	frags := bytes.SplitN(p, newline, newlines+1)
-	if w.compact {
-		for i, frag := range frags {
-			if i > 0 {
-				if err := w.w.WriteByte(' '); err != nil {
-					return n, err
-				}
-				n++
-			}
-			nn, err := w.w.Write(frag)
-			n += nn
-			if err != nil {
-				return n, err
-			}
-		}
-		return n, nil
-	}
-
-	for i, frag := range frags {
-		if w.complete {
-			w.writeIndent()
-		}
-		nn, err := w.w.Write(frag)
-		n += nn
-		if err != nil {
-			return n, err
-		}
-		if i+1 < len(frags) {
-			if err := w.w.WriteByte('\n'); err != nil {
-				return n, err
-			}
-			n++
-		}
-	}
-	w.complete = len(frags[len(frags)-1]) == 0
-	return n, nil
-}
-
-func (w *textWriter) WriteByte(c byte) error {
-	if w.compact && c == '\n' {
-		c = ' '
-	}
-	if !w.compact && w.complete {
-		w.writeIndent()
-	}
-	err := w.w.WriteByte(c)
-	w.complete = c == '\n'
-	return err
-}
-
-func (w *textWriter) indent() { w.ind++ }
-
-func (w *textWriter) unindent() {
-	if w.ind == 0 {
-		log.Print("proto: textWriter unindented too far")
-		return
-	}
-	w.ind--
-}
-
-func writeName(w *textWriter, props *Properties) error {
-	if _, err := w.WriteString(props.OrigName); err != nil {
-		return err
-	}
-	if props.Wire != "group" {
-		return w.WriteByte(':')
-	}
-	return nil
-}
-
-// raw is the interface satisfied by RawMessage.
-type raw interface {
-	Bytes() []byte
-}
-
-func requiresQuotes(u string) bool {
-	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
-	for _, ch := range u {
-		switch {
-		case ch == '.' || ch == '/' || ch == '_':
-			continue
-		case '0' <= ch && ch <= '9':
-			continue
-		case 'A' <= ch && ch <= 'Z':
-			continue
-		case 'a' <= ch && ch <= 'z':
-			continue
-		default:
-			return true
-		}
-	}
-	return false
-}
-
-// isAny reports whether sv is a google.protobuf.Any message
-func isAny(sv reflect.Value) bool {
-	type wkt interface {
-		XXX_WellKnownType() string
-	}
-	t, ok := sv.Addr().Interface().(wkt)
-	return ok && t.XXX_WellKnownType() == "Any"
-}
-
-// writeProto3Any writes an expanded google.protobuf.Any message.
-//
-// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
-// required messages are not linked in).
-//
-// It returns (true, error) when sv was written in expanded format or an error
-// was encountered.
-func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
-	turl := sv.FieldByName("TypeUrl")
-	val := sv.FieldByName("Value")
-	if !turl.IsValid() || !val.IsValid() {
-		return true, errors.New("proto: invalid google.protobuf.Any message")
-	}
-
-	b, ok := val.Interface().([]byte)
-	if !ok {
-		return true, errors.New("proto: invalid google.protobuf.Any message")
-	}
-
-	parts := strings.Split(turl.String(), "/")
-	mt := MessageType(parts[len(parts)-1])
-	if mt == nil {
-		return false, nil
-	}
-	m := reflect.New(mt.Elem())
-	if err := Unmarshal(b, m.Interface().(Message)); err != nil {
-		return false, nil
-	}
-	w.Write([]byte("["))
-	u := turl.String()
-	if requiresQuotes(u) {
-		writeString(w, u)
-	} else {
-		w.Write([]byte(u))
-	}
-	if w.compact {
-		w.Write([]byte("]:<"))
-	} else {
-		w.Write([]byte("]: <\n"))
-		w.ind++
-	}
-	if err := tm.writeStruct(w, m.Elem()); err != nil {
-		return true, err
-	}
-	if w.compact {
-		w.Write([]byte("> "))
-	} else {
-		w.ind--
-		w.Write([]byte(">\n"))
-	}
-	return true, nil
-}
-
-func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
-	if tm.ExpandAny && isAny(sv) {
-		if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
-			return err
-		}
-	}
-	st := sv.Type()
-	sprops := GetProperties(st)
-	for i := 0; i < sv.NumField(); i++ {
-		fv := sv.Field(i)
-		props := sprops.Prop[i]
-		name := st.Field(i).Name
-
-		if strings.HasPrefix(name, "XXX_") {
-			// There are two XXX_ fields:
-			//   XXX_unrecognized []byte
-			//   XXX_extensions   map[int32]proto.Extension
-			// The first is handled here;
-			// the second is handled at the bottom of this function.
-			if name == "XXX_unrecognized" && !fv.IsNil() {
-				if err := writeUnknownStruct(w, fv.Interface().([]byte)); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if fv.Kind() == reflect.Ptr && fv.IsNil() {
-			// Field not filled in. This could be an optional field or
-			// a required field that wasn't filled in. Either way, there
-			// isn't anything we can show for it.
-			continue
-		}
-		if fv.Kind() == reflect.Slice && fv.IsNil() {
-			// Repeated field that is empty, or a bytes field that is unused.
-			continue
-		}
-
-		if props.Repeated && fv.Kind() == reflect.Slice {
-			// Repeated field.
-			for j := 0; j < fv.Len(); j++ {
-				if err := writeName(w, props); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				v := fv.Index(j)
-				if v.Kind() == reflect.Ptr && v.IsNil() {
-					// A nil message in a repeated field is not valid,
-					// but we can handle that more gracefully than panicking.
-					if _, err := w.Write([]byte("<nil>\n")); err != nil {
-						return err
-					}
-					continue
-				}
-				if err := tm.writeAny(w, v, props); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if fv.Kind() == reflect.Map {
-			// Map fields are rendered as a repeated struct with key/value fields.
-			keys := fv.MapKeys()
-			sort.Sort(mapKeys(keys))
-			for _, key := range keys {
-				val := fv.MapIndex(key)
-				if err := writeName(w, props); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				// open struct
-				if err := w.WriteByte('<'); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte('\n'); err != nil {
-						return err
-					}
-				}
-				w.indent()
-				// key
-				if _, err := w.WriteString("key:"); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				if err := tm.writeAny(w, key, props.mkeyprop); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-				// nil values aren't legal, but we can avoid panicking because of them.
-				if val.Kind() != reflect.Ptr || !val.IsNil() {
-					// value
-					if _, err := w.WriteString("value:"); err != nil {
-						return err
-					}
-					if !w.compact {
-						if err := w.WriteByte(' '); err != nil {
-							return err
-						}
-					}
-					if err := tm.writeAny(w, val, props.mvalprop); err != nil {
-						return err
-					}
-					if err := w.WriteByte('\n'); err != nil {
-						return err
-					}
-				}
-				// close struct
-				w.unindent()
-				if err := w.WriteByte('>'); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if props.proto3 && fv.Kind() == reflect.Slice && fv.Len() == 0 {
-			// empty bytes field
-			continue
-		}
-		if fv.Kind() != reflect.Ptr && fv.Kind() != reflect.Slice {
-			// proto3 non-repeated scalar field; skip if zero value
-			if isProto3Zero(fv) {
-				continue
-			}
-		}
-
-		if fv.Kind() == reflect.Interface {
-			// Check if it is a oneof.
-			if st.Field(i).Tag.Get("protobuf_oneof") != "" {
-				// fv is nil, or holds a pointer to generated struct.
-				// That generated struct has exactly one field,
-				// which has a protobuf struct tag.
-				if fv.IsNil() {
-					continue
-				}
-				inner := fv.Elem().Elem() // interface -> *T -> T
-				tag := inner.Type().Field(0).Tag.Get("protobuf")
-				props = new(Properties) // Overwrite the outer props var, but not its pointee.
-				props.Parse(tag)
-				// Write the value in the oneof, not the oneof itself.
-				fv = inner.Field(0)
-
-				// Special case to cope with malformed messages gracefully:
-				// If the value in the oneof is a nil pointer, don't panic
-				// in writeAny.
-				if fv.Kind() == reflect.Ptr && fv.IsNil() {
-					// Use errors.New so writeAny won't render quotes.
-					msg := errors.New("/* nil */")
-					fv = reflect.ValueOf(&msg).Elem()
-				}
-			}
-		}
-
-		if err := writeName(w, props); err != nil {
-			return err
-		}
-		if !w.compact {
-			if err := w.WriteByte(' '); err != nil {
-				return err
-			}
-		}
-		if b, ok := fv.Interface().(raw); ok {
-			if err := writeRaw(w, b.Bytes()); err != nil {
-				return err
-			}
-			continue
-		}
-
-		// Enums have a String method, so writeAny will work fine.
-		if err := tm.writeAny(w, fv, props); err != nil {
-			return err
-		}
-
-		if err := w.WriteByte('\n'); err != nil {
-			return err
-		}
-	}
-
-	// Extensions (the XXX_extensions field).
-	pv := sv.Addr()
-	if _, ok := extendable(pv.Interface()); ok {
-		if err := tm.writeExtensions(w, pv); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// writeRaw writes an uninterpreted raw message.
-func writeRaw(w *textWriter, b []byte) error {
-	if err := w.WriteByte('<'); err != nil {
-		return err
-	}
-	if !w.compact {
-		if err := w.WriteByte('\n'); err != nil {
-			return err
-		}
-	}
-	w.indent()
-	if err := writeUnknownStruct(w, b); err != nil {
-		return err
-	}
-	w.unindent()
-	if err := w.WriteByte('>'); err != nil {
-		return err
-	}
-	return nil
-}
-
-// writeAny writes an arbitrary field.
-func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
-	v = reflect.Indirect(v)
-
-	// Floats have special cases.
-	if v.Kind() == reflect.Float32 || v.Kind() == reflect.Float64 {
-		x := v.Float()
-		var b []byte
-		switch {
-		case math.IsInf(x, 1):
-			b = posInf
-		case math.IsInf(x, -1):
-			b = negInf
-		case math.IsNaN(x):
-			b = nan
-		}
-		if b != nil {
-			_, err := w.Write(b)
-			return err
-		}
-		// Other values are handled below.
-	}
-
-	// We don't attempt to serialise every possible value type; only those
-	// that can occur in protocol buffers.
-	switch v.Kind() {
-	case reflect.Slice:
-		// Should only be a []byte; repeated fields are handled in writeStruct.
-		if err := writeString(w, string(v.Bytes())); err != nil {
-			return err
-		}
-	case reflect.String:
-		if err := writeString(w, v.String()); err != nil {
-			return err
-		}
-	case reflect.Struct:
-		// Required/optional group/message.
-		var bra, ket byte = '<', '>'
-		if props != nil && props.Wire == "group" {
-			bra, ket = '{', '}'
-		}
-		if err := w.WriteByte(bra); err != nil {
-			return err
-		}
-		if !w.compact {
-			if err := w.WriteByte('\n'); err != nil {
-				return err
-			}
-		}
-		w.indent()
-		if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
-			text, err := etm.MarshalText()
-			if err != nil {
-				return err
-			}
-			if _, err = w.Write(text); err != nil {
-				return err
-			}
-		} else if err := tm.writeStruct(w, v); err != nil {
-			return err
-		}
-		w.unindent()
-		if err := w.WriteByte(ket); err != nil {
-			return err
-		}
-	default:
-		_, err := fmt.Fprint(w, v.Interface())
-		return err
-	}
-	return nil
-}
-
-// equivalent to C's isprint.
-func isprint(c byte) bool {
-	return c >= 0x20 && c < 0x7f
-}
-
-// writeString writes a string in the protocol buffer text format.
-// It is similar to strconv.Quote except we don't use Go escape sequences,
-// we treat the string as a byte sequence, and we use octal escapes.
-// These differences are to maintain interoperability with the other
-// languages' implementations of the text format.
-func writeString(w *textWriter, s string) error {
-	// use WriteByte here to get any needed indent
-	if err := w.WriteByte('"'); err != nil {
-		return err
-	}
-	// Loop over the bytes, not the runes.
-	for i := 0; i < len(s); i++ {
-		var err error
-		// Divergence from C++: we don't escape apostrophes.
-		// There's no need to escape them, and the C++ parser
-		// copes with a naked apostrophe.
-		switch c := s[i]; c {
-		case '\n':
-			_, err = w.w.Write(backslashN)
-		case '\r':
-			_, err = w.w.Write(backslashR)
-		case '\t':
-			_, err = w.w.Write(backslashT)
-		case '"':
-			_, err = w.w.Write(backslashDQ)
-		case '\\':
-			_, err = w.w.Write(backslashBS)
-		default:
-			if isprint(c) {
-				err = w.w.WriteByte(c)
-			} else {
-				_, err = fmt.Fprintf(w.w, "\\%03o", c)
-			}
-		}
-		if err != nil {
-			return err
-		}
-	}
-	return w.WriteByte('"')
-}
-
-func writeUnknownStruct(w *textWriter, data []byte) (err error) {
-	if !w.compact {
-		if _, err := fmt.Fprintf(w, "/* %d unknown bytes */\n", len(data)); err != nil {
-			return err
-		}
-	}
-	b := NewBuffer(data)
-	for b.index < len(b.buf) {
-		x, err := b.DecodeVarint()
-		if err != nil {
-			_, err := fmt.Fprintf(w, "/* %v */\n", err)
-			return err
-		}
-		wire, tag := x&7, x>>3
-		if wire == WireEndGroup {
-			w.unindent()
-			if _, err := w.Write(endBraceNewline); err != nil {
-				return err
-			}
-			continue
-		}
-		if _, err := fmt.Fprint(w, tag); err != nil {
-			return err
-		}
-		if wire != WireStartGroup {
-			if err := w.WriteByte(':'); err != nil {
-				return err
-			}
-		}
-		if !w.compact || wire == WireStartGroup {
-			if err := w.WriteByte(' '); err != nil {
-				return err
-			}
-		}
-		switch wire {
-		case WireBytes:
-			buf, e := b.DecodeRawBytes(false)
-			if e == nil {
-				_, err = fmt.Fprintf(w, "%q", buf)
-			} else {
-				_, err = fmt.Fprintf(w, "/* %v */", e)
-			}
-		case WireFixed32:
-			x, err = b.DecodeFixed32()
-			err = writeUnknownInt(w, x, err)
-		case WireFixed64:
-			x, err = b.DecodeFixed64()
-			err = writeUnknownInt(w, x, err)
-		case WireStartGroup:
-			err = w.WriteByte('{')
-			w.indent()
-		case WireVarint:
-			x, err = b.DecodeVarint()
-			err = writeUnknownInt(w, x, err)
-		default:
-			_, err = fmt.Fprintf(w, "/* unknown wire type %d */", wire)
-		}
-		if err != nil {
-			return err
-		}
-		if err = w.WriteByte('\n'); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func writeUnknownInt(w *textWriter, x uint64, err error) error {
-	if err == nil {
-		_, err = fmt.Fprint(w, x)
-	} else {
-		_, err = fmt.Fprintf(w, "/* %v */", err)
-	}
-	return err
-}
-
-type int32Slice []int32
-
-func (s int32Slice) Len() int           { return len(s) }
-func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
-func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-
-// writeExtensions writes all the extensions in pv.
-// pv is assumed to be a pointer to a protocol message struct that is extendable.
-func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
-	emap := extensionMaps[pv.Type().Elem()]
-	ep, _ := extendable(pv.Interface())
-
-	// Order the extensions by ID.
-	// This isn't strictly necessary, but it will give us
-	// canonical output, which will also make testing easier.
-	m, mu := ep.extensionsRead()
-	if m == nil {
-		return nil
-	}
-	mu.Lock()
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids))
-	mu.Unlock()
-
-	for _, extNum := range ids {
-		ext := m[extNum]
-		var desc *ExtensionDesc
-		if emap != nil {
-			desc = emap[extNum]
-		}
-		if desc == nil {
-			// Unknown extension.
-			if err := writeUnknownStruct(w, ext.enc); err != nil {
-				return err
-			}
-			continue
-		}
-
-		pb, err := GetExtension(ep, desc)
-		if err != nil {
-			return fmt.Errorf("failed getting extension: %v", err)
-		}
-
-		// Repeated extensions will appear as a slice.
-		if !desc.repeated() {
-			if err := tm.writeExtension(w, desc.Name, pb); err != nil {
-				return err
-			}
-		} else {
-			v := reflect.ValueOf(pb)
-			for i := 0; i < v.Len(); i++ {
-				if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
-					return err
-				}
-			}
-		}
-	}
-	return nil
-}
-
-func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
-	if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
-		return err
-	}
-	if !w.compact {
-		if err := w.WriteByte(' '); err != nil {
-			return err
-		}
-	}
-	if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
-		return err
-	}
-	if err := w.WriteByte('\n'); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (w *textWriter) writeIndent() {
-	if !w.complete {
-		return
-	}
-	remain := w.ind * 2
-	for remain > 0 {
-		n := remain
-		if n > len(spaces) {
-			n = len(spaces)
-		}
-		w.w.Write(spaces[:n])
-		remain -= n
-	}
-	w.complete = false
-}
-
-// TextMarshaler is a configurable text format marshaler.
-type TextMarshaler struct {
-	Compact   bool // use compact text format (one line).
-	ExpandAny bool // expand google.protobuf.Any messages of known types
-}
-
-// Marshal writes a given protocol buffer in text format.
-// The only errors returned are from w.
-func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
-	val := reflect.ValueOf(pb)
-	if pb == nil || val.IsNil() {
-		w.Write([]byte("<nil>"))
-		return nil
-	}
-	var bw *bufio.Writer
-	ww, ok := w.(writer)
-	if !ok {
-		bw = bufio.NewWriter(w)
-		ww = bw
-	}
-	aw := &textWriter{
-		w:        ww,
-		complete: true,
-		compact:  tm.Compact,
-	}
-
-	if etm, ok := pb.(encoding.TextMarshaler); ok {
-		text, err := etm.MarshalText()
-		if err != nil {
-			return err
-		}
-		if _, err = aw.Write(text); err != nil {
-			return err
-		}
-		if bw != nil {
-			return bw.Flush()
-		}
-		return nil
-	}
-	// Dereference the received pointer so we don't have outer < and >.
-	v := reflect.Indirect(val)
-	if err := tm.writeStruct(aw, v); err != nil {
-		return err
-	}
-	if bw != nil {
-		return bw.Flush()
-	}
-	return nil
-}
-
-// Text is the same as Marshal, but returns the string directly.
-func (tm *TextMarshaler) Text(pb Message) string {
-	var buf bytes.Buffer
-	tm.Marshal(&buf, pb)
-	return buf.String()
-}
-
-var (
-	defaultTextMarshaler = TextMarshaler{}
-	compactTextMarshaler = TextMarshaler{Compact: true}
-)
-
-// TODO: consider removing some of the Marshal functions below.
-
-// MarshalText writes a given protocol buffer in text format.
-// The only errors returned are from w.
-func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
-
-// MarshalTextString is the same as MarshalText, but returns the string directly.
-func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
-
-// CompactText writes a given protocol buffer in compact text format (one line).
-func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
-
-// CompactTextString is the same as CompactText, but returns the string directly.
-func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }

vendor/github.com/golang/protobuf/proto/text_parser.go

@@ -1,895 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-// Functions for parsing the Text protocol buffer format.
-// TODO: message sets.
-
-import (
-	"encoding"
-	"errors"
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-	"unicode/utf8"
-)
-
-// Error string emitted when deserializing Any and fields are already set
-const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
-
-type ParseError struct {
-	Message string
-	Line    int // 1-based line number
-	Offset  int // 0-based byte offset from start of input
-}
-
-func (p *ParseError) Error() string {
-	if p.Line == 1 {
-		// show offset only for first line
-		return fmt.Sprintf("line 1.%d: %v", p.Offset, p.Message)
-	}
-	return fmt.Sprintf("line %d: %v", p.Line, p.Message)
-}
-
-type token struct {
-	value    string
-	err      *ParseError
-	line     int    // line number
-	offset   int    // byte number from start of input, not start of line
-	unquoted string // the unquoted version of value, if it was a quoted string
-}
-
-func (t *token) String() string {
-	if t.err == nil {
-		return fmt.Sprintf("%q (line=%d, offset=%d)", t.value, t.line, t.offset)
-	}
-	return fmt.Sprintf("parse error: %v", t.err)
-}
-
-type textParser struct {
-	s            string // remaining input
-	done         bool   // whether the parsing is finished (success or error)
-	backed       bool   // whether back() was called
-	offset, line int
-	cur          token
-}
-
-func newTextParser(s string) *textParser {
-	p := new(textParser)
-	p.s = s
-	p.line = 1
-	p.cur.line = 1
-	return p
-}
-
-func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
-	pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
-	p.cur.err = pe
-	p.done = true
-	return pe
-}
-
-// Numbers and identifiers are matched by [-+._A-Za-z0-9]
-func isIdentOrNumberChar(c byte) bool {
-	switch {
-	case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
-		return true
-	case '0' <= c && c <= '9':
-		return true
-	}
-	switch c {
-	case '-', '+', '.', '_':
-		return true
-	}
-	return false
-}
-
-func isWhitespace(c byte) bool {
-	switch c {
-	case ' ', '\t', '\n', '\r':
-		return true
-	}
-	return false
-}
-
-func isQuote(c byte) bool {
-	switch c {
-	case '"', '\'':
-		return true
-	}
-	return false
-}
-
-func (p *textParser) skipWhitespace() {
-	i := 0
-	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
-		if p.s[i] == '#' {
-			// comment; skip to end of line or input
-			for i < len(p.s) && p.s[i] != '\n' {
-				i++
-			}
-			if i == len(p.s) {
-				break
-			}
-		}
-		if p.s[i] == '\n' {
-			p.line++
-		}
-		i++
-	}
-	p.offset += i
-	p.s = p.s[i:len(p.s)]
-	if len(p.s) == 0 {
-		p.done = true
-	}
-}
-
-func (p *textParser) advance() {
-	// Skip whitespace
-	p.skipWhitespace()
-	if p.done {
-		return
-	}
-
-	// Start of non-whitespace
-	p.cur.err = nil
-	p.cur.offset, p.cur.line = p.offset, p.line
-	p.cur.unquoted = ""
-	switch p.s[0] {
-	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
-		// Single symbol
-		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
-	case '"', '\'':
-		// Quoted string
-		i := 1
-		for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
-			if p.s[i] == '\\' && i+1 < len(p.s) {
-				// skip escaped char
-				i++
-			}
-			i++
-		}
-		if i >= len(p.s) || p.s[i] != p.s[0] {
-			p.errorf("unmatched quote")
-			return
-		}
-		unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
-		if err != nil {
-			p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
-			return
-		}
-		p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
-		p.cur.unquoted = unq
-	default:
-		i := 0
-		for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
-			i++
-		}
-		if i == 0 {
-			p.errorf("unexpected byte %#x", p.s[0])
-			return
-		}
-		p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
-	}
-	p.offset += len(p.cur.value)
-}
-
-var (
-	errBadUTF8 = errors.New("proto: bad UTF-8")
-	errBadHex  = errors.New("proto: bad hexadecimal")
-)
-
-func unquoteC(s string, quote rune) (string, error) {
-	// This is based on C++'s tokenizer.cc.
-	// Despite its name, this is *not* parsing C syntax.
-	// For instance, "\0" is an invalid quoted string.
-
-	// Avoid allocation in trivial cases.
-	simple := true
-	for _, r := range s {
-		if r == '\\' || r == quote {
-			simple = false
-			break
-		}
-	}
-	if simple {
-		return s, nil
-	}
-
-	buf := make([]byte, 0, 3*len(s)/2)
-	for len(s) > 0 {
-		r, n := utf8.DecodeRuneInString(s)
-		if r == utf8.RuneError && n == 1 {
-			return "", errBadUTF8
-		}
-		s = s[n:]
-		if r != '\\' {
-			if r < utf8.RuneSelf {
-				buf = append(buf, byte(r))
-			} else {
-				buf = append(buf, string(r)...)
-			}
-			continue
-		}
-
-		ch, tail, err := unescape(s)
-		if err != nil {
-			return "", err
-		}
-		buf = append(buf, ch...)
-		s = tail
-	}
-	return string(buf), nil
-}
-
-func unescape(s string) (ch string, tail string, err error) {
-	r, n := utf8.DecodeRuneInString(s)
-	if r == utf8.RuneError && n == 1 {
-		return "", "", errBadUTF8
-	}
-	s = s[n:]
-	switch r {
-	case 'a':
-		return "\a", s, nil
-	case 'b':
-		return "\b", s, nil
-	case 'f':
-		return "\f", s, nil
-	case 'n':
-		return "\n", s, nil
-	case 'r':
-		return "\r", s, nil
-	case 't':
-		return "\t", s, nil
-	case 'v':
-		return "\v", s, nil
-	case '?':
-		return "?", s, nil // trigraph workaround
-	case '\'', '"', '\\':
-		return string(r), s, nil
-	case '0', '1', '2', '3', '4', '5', '6', '7', 'x', 'X':
-		if len(s) < 2 {
-			return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
-		}
-		base := 8
-		ss := s[:2]
-		s = s[2:]
-		if r == 'x' || r == 'X' {
-			base = 16
-		} else {
-			ss = string(r) + ss
-		}
-		i, err := strconv.ParseUint(ss, base, 8)
-		if err != nil {
-			return "", "", err
-		}
-		return string([]byte{byte(i)}), s, nil
-	case 'u', 'U':
-		n := 4
-		if r == 'U' {
-			n = 8
-		}
-		if len(s) < n {
-			return "", "", fmt.Errorf(`\%c requires %d digits`, r, n)
-		}
-
-		bs := make([]byte, n/2)
-		for i := 0; i < n; i += 2 {
-			a, ok1 := unhex(s[i])
-			b, ok2 := unhex(s[i+1])
-			if !ok1 || !ok2 {
-				return "", "", errBadHex
-			}
-			bs[i/2] = a<<4 | b
-		}
-		s = s[n:]
-		return string(bs), s, nil
-	}
-	return "", "", fmt.Errorf(`unknown escape \%c`, r)
-}
-
-// Adapted from src/pkg/strconv/quote.go.
-func unhex(b byte) (v byte, ok bool) {
-	switch {
-	case '0' <= b && b <= '9':
-		return b - '0', true
-	case 'a' <= b && b <= 'f':
-		return b - 'a' + 10, true
-	case 'A' <= b && b <= 'F':
-		return b - 'A' + 10, true
-	}
-	return 0, false
-}
-
-// Back off the parser by one token. Can only be done between calls to next().
-// It makes the next advance() a no-op.
-func (p *textParser) back() { p.backed = true }
-
-// Advances the parser and returns the new current token.
-func (p *textParser) next() *token {
-	if p.backed || p.done {
-		p.backed = false
-		return &p.cur
-	}
-	p.advance()
-	if p.done {
-		p.cur.value = ""
-	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
-		// Look for multiple quoted strings separated by whitespace,
-		// and concatenate them.
-		cat := p.cur
-		for {
-			p.skipWhitespace()
-			if p.done || !isQuote(p.s[0]) {
-				break
-			}
-			p.advance()
-			if p.cur.err != nil {
-				return &p.cur
-			}
-			cat.value += " " + p.cur.value
-			cat.unquoted += p.cur.unquoted
-		}
-		p.done = false // parser may have seen EOF, but we want to return cat
-		p.cur = cat
-	}
-	return &p.cur
-}
-
-func (p *textParser) consumeToken(s string) error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != s {
-		p.back()
-		return p.errorf("expected %q, found %q", s, tok.value)
-	}
-	return nil
-}
-
-// Return a RequiredNotSetError indicating which required field was not set.
-func (p *textParser) missingRequiredFieldError(sv reflect.Value) *RequiredNotSetError {
-	st := sv.Type()
-	sprops := GetProperties(st)
-	for i := 0; i < st.NumField(); i++ {
-		if !isNil(sv.Field(i)) {
-			continue
-		}
-
-		props := sprops.Prop[i]
-		if props.Required {
-			return &RequiredNotSetError{fmt.Sprintf("%v.%v", st, props.OrigName)}
-		}
-	}
-	return &RequiredNotSetError{fmt.Sprintf("%v.<unknown field name>", st)} // should not happen
-}
-
-// Returns the index in the struct for the named field, as well as the parsed tag properties.
-func structFieldByName(sprops *StructProperties, name string) (int, *Properties, bool) {
-	i, ok := sprops.decoderOrigNames[name]
-	if ok {
-		return i, sprops.Prop[i], true
-	}
-	return -1, nil, false
-}
-
-// Consume a ':' from the input stream (if the next token is a colon),
-// returning an error if a colon is needed but not present.
-func (p *textParser) checkForColon(props *Properties, typ reflect.Type) *ParseError {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != ":" {
-		// Colon is optional when the field is a group or message.
-		needColon := true
-		switch props.Wire {
-		case "group":
-			needColon = false
-		case "bytes":
-			// A "bytes" field is either a message, a string, or a repeated field;
-			// those three become *T, *string and []T respectively, so we can check for
-			// this field being a pointer to a non-string.
-			if typ.Kind() == reflect.Ptr {
-				// *T or *string
-				if typ.Elem().Kind() == reflect.String {
-					break
-				}
-			} else if typ.Kind() == reflect.Slice {
-				// []T or []*T
-				if typ.Elem().Kind() != reflect.Ptr {
-					break
-				}
-			} else if typ.Kind() == reflect.String {
-				// The proto3 exception is for a string field,
-				// which requires a colon.
-				break
-			}
-			needColon = false
-		}
-		if needColon {
-			return p.errorf("expected ':', found %q", tok.value)
-		}
-		p.back()
-	}
-	return nil
-}
-
-func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
-	st := sv.Type()
-	sprops := GetProperties(st)
-	reqCount := sprops.reqCount
-	var reqFieldErr error
-	fieldSet := make(map[string]bool)
-	// A struct is a sequence of "name: value", terminated by one of
-	// '>' or '}', or the end of the input.  A name may also be
-	// "[extension]" or "[type/url]".
-	//
-	// The whole struct can also be an expanded Any message, like:
-	// [type/url] < ... struct contents ... >
-	for {
-		tok := p.next()
-		if tok.err != nil {
-			return tok.err
-		}
-		if tok.value == terminator {
-			break
-		}
-		if tok.value == "[" {
-			// Looks like an extension or an Any.
-			//
-			// TODO: Check whether we need to handle
-			// namespace rooted names (e.g. ".something.Foo").
-			extName, err := p.consumeExtName()
-			if err != nil {
-				return err
-			}
-
-			if s := strings.LastIndex(extName, "/"); s >= 0 {
-				// If it contains a slash, it's an Any type URL.
-				messageName := extName[s+1:]
-				mt := MessageType(messageName)
-				if mt == nil {
-					return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
-				}
-				tok = p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				// consume an optional colon
-				if tok.value == ":" {
-					tok = p.next()
-					if tok.err != nil {
-						return tok.err
-					}
-				}
-				var terminator string
-				switch tok.value {
-				case "<":
-					terminator = ">"
-				case "{":
-					terminator = "}"
-				default:
-					return p.errorf("expected '{' or '<', found %q", tok.value)
-				}
-				v := reflect.New(mt.Elem())
-				if pe := p.readStruct(v.Elem(), terminator); pe != nil {
-					return pe
-				}
-				b, err := Marshal(v.Interface().(Message))
-				if err != nil {
-					return p.errorf("failed to marshal message of type %q: %v", messageName, err)
-				}
-				if fieldSet["type_url"] {
-					return p.errorf(anyRepeatedlyUnpacked, "type_url")
-				}
-				if fieldSet["value"] {
-					return p.errorf(anyRepeatedlyUnpacked, "value")
-				}
-				sv.FieldByName("TypeUrl").SetString(extName)
-				sv.FieldByName("Value").SetBytes(b)
-				fieldSet["type_url"] = true
-				fieldSet["value"] = true
-				continue
-			}
-
-			var desc *ExtensionDesc
-			// This could be faster, but it's functional.
-			// TODO: Do something smarter than a linear scan.
-			for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
-				if d.Name == extName {
-					desc = d
-					break
-				}
-			}
-			if desc == nil {
-				return p.errorf("unrecognized extension %q", extName)
-			}
-
-			props := &Properties{}
-			props.Parse(desc.Tag)
-
-			typ := reflect.TypeOf(desc.ExtensionType)
-			if err := p.checkForColon(props, typ); err != nil {
-				return err
-			}
-
-			rep := desc.repeated()
-
-			// Read the extension structure, and set it in
-			// the value we're constructing.
-			var ext reflect.Value
-			if !rep {
-				ext = reflect.New(typ).Elem()
-			} else {
-				ext = reflect.New(typ.Elem()).Elem()
-			}
-			if err := p.readAny(ext, props); err != nil {
-				if _, ok := err.(*RequiredNotSetError); !ok {
-					return err
-				}
-				reqFieldErr = err
-			}
-			ep := sv.Addr().Interface().(Message)
-			if !rep {
-				SetExtension(ep, desc, ext.Interface())
-			} else {
-				old, err := GetExtension(ep, desc)
-				var sl reflect.Value
-				if err == nil {
-					sl = reflect.ValueOf(old) // existing slice
-				} else {
-					sl = reflect.MakeSlice(typ, 0, 1)
-				}
-				sl = reflect.Append(sl, ext)
-				SetExtension(ep, desc, sl.Interface())
-			}
-			if err := p.consumeOptionalSeparator(); err != nil {
-				return err
-			}
-			continue
-		}
-
-		// This is a normal, non-extension field.
-		name := tok.value
-		var dst reflect.Value
-		fi, props, ok := structFieldByName(sprops, name)
-		if ok {
-			dst = sv.Field(fi)
-		} else if oop, ok := sprops.OneofTypes[name]; ok {
-			// It is a oneof.
-			props = oop.Prop
-			nv := reflect.New(oop.Type.Elem())
-			dst = nv.Elem().Field(0)
-			field := sv.Field(oop.Field)
-			if !field.IsNil() {
-				return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
-			}
-			field.Set(nv)
-		}
-		if !dst.IsValid() {
-			return p.errorf("unknown field name %q in %v", name, st)
-		}
-
-		if dst.Kind() == reflect.Map {
-			// Consume any colon.
-			if err := p.checkForColon(props, dst.Type()); err != nil {
-				return err
-			}
-
-			// Construct the map if it doesn't already exist.
-			if dst.IsNil() {
-				dst.Set(reflect.MakeMap(dst.Type()))
-			}
-			key := reflect.New(dst.Type().Key()).Elem()
-			val := reflect.New(dst.Type().Elem()).Elem()
-
-			// The map entry should be this sequence of tokens:
-			//	< key : KEY value : VALUE >
-			// However, implementations may omit key or value, and technically
-			// we should support them in any order.  See b/28924776 for a time
-			// this went wrong.
-
-			tok := p.next()
-			var terminator string
-			switch tok.value {
-			case "<":
-				terminator = ">"
-			case "{":
-				terminator = "}"
-			default:
-				return p.errorf("expected '{' or '<', found %q", tok.value)
-			}
-			for {
-				tok := p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				if tok.value == terminator {
-					break
-				}
-				switch tok.value {
-				case "key":
-					if err := p.consumeToken(":"); err != nil {
-						return err
-					}
-					if err := p.readAny(key, props.mkeyprop); err != nil {
-						return err
-					}
-					if err := p.consumeOptionalSeparator(); err != nil {
-						return err
-					}
-				case "value":
-					if err := p.checkForColon(props.mvalprop, dst.Type().Elem()); err != nil {
-						return err
-					}
-					if err := p.readAny(val, props.mvalprop); err != nil {
-						return err
-					}
-					if err := p.consumeOptionalSeparator(); err != nil {
-						return err
-					}
-				default:
-					p.back()
-					return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
-				}
-			}
-
-			dst.SetMapIndex(key, val)
-			continue
-		}
-
-		// Check that it's not already set if it's not a repeated field.
-		if !props.Repeated && fieldSet[name] {
-			return p.errorf("non-repeated field %q was repeated", name)
-		}
-
-		if err := p.checkForColon(props, dst.Type()); err != nil {
-			return err
-		}
-
-		// Parse into the field.
-		fieldSet[name] = true
-		if err := p.readAny(dst, props); err != nil {
-			if _, ok := err.(*RequiredNotSetError); !ok {
-				return err
-			}
-			reqFieldErr = err
-		}
-		if props.Required {
-			reqCount--
-		}
-
-		if err := p.consumeOptionalSeparator(); err != nil {
-			return err
-		}
-
-	}
-
-	if reqCount > 0 {
-		return p.missingRequiredFieldError(sv)
-	}
-	return reqFieldErr
-}
-
-// consumeExtName consumes extension name or expanded Any type URL and the
-// following ']'. It returns the name or URL consumed.
-func (p *textParser) consumeExtName() (string, error) {
-	tok := p.next()
-	if tok.err != nil {
-		return "", tok.err
-	}
-
-	// If extension name or type url is quoted, it's a single token.
-	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
-		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
-		if err != nil {
-			return "", err
-		}
-		return name, p.consumeToken("]")
-	}
-
-	// Consume everything up to "]"
-	var parts []string
-	for tok.value != "]" {
-		parts = append(parts, tok.value)
-		tok = p.next()
-		if tok.err != nil {
-			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
-		}
-	}
-	return strings.Join(parts, ""), nil
-}
-
-// consumeOptionalSeparator consumes an optional semicolon or comma.
-// It is used in readStruct to provide backward compatibility.
-func (p *textParser) consumeOptionalSeparator() error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != ";" && tok.value != "," {
-		p.back()
-	}
-	return nil
-}
-
-func (p *textParser) readAny(v reflect.Value, props *Properties) error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value == "" {
-		return p.errorf("unexpected EOF")
-	}
-
-	switch fv := v; fv.Kind() {
-	case reflect.Slice:
-		at := v.Type()
-		if at.Elem().Kind() == reflect.Uint8 {
-			// Special case for []byte
-			if tok.value[0] != '"' && tok.value[0] != '\'' {
-				// Deliberately written out here, as the error after
-				// this switch statement would write "invalid []byte: ...",
-				// which is not as user-friendly.
-				return p.errorf("invalid string: %v", tok.value)
-			}
-			bytes := []byte(tok.unquoted)
-			fv.Set(reflect.ValueOf(bytes))
-			return nil
-		}
-		// Repeated field.
-		if tok.value == "[" {
-			// Repeated field with list notation, like [1,2,3].
-			for {
-				fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
-				err := p.readAny(fv.Index(fv.Len()-1), props)
-				if err != nil {
-					return err
-				}
-				tok := p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				if tok.value == "]" {
-					break
-				}
-				if tok.value != "," {
-					return p.errorf("Expected ']' or ',' found %q", tok.value)
-				}
-			}
-			return nil
-		}
-		// One value of the repeated field.
-		p.back()
-		fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
-		return p.readAny(fv.Index(fv.Len()-1), props)
-	case reflect.Bool:
-		// true/1/t/True or false/f/0/False.
-		switch tok.value {
-		case "true", "1", "t", "True":
-			fv.SetBool(true)
-			return nil
-		case "false", "0", "f", "False":
-			fv.SetBool(false)
-			return nil
-		}
-	case reflect.Float32, reflect.Float64:
-		v := tok.value
-		// Ignore 'f' for compatibility with output generated by C++, but don't
-		// remove 'f' when the value is "-inf" or "inf".
-		if strings.HasSuffix(v, "f") && tok.value != "-inf" && tok.value != "inf" {
-			v = v[:len(v)-1]
-		}
-		if f, err := strconv.ParseFloat(v, fv.Type().Bits()); err == nil {
-			fv.SetFloat(f)
-			return nil
-		}
-	case reflect.Int32:
-		if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
-			fv.SetInt(x)
-			return nil
-		}
-
-		if len(props.Enum) == 0 {
-			break
-		}
-		m, ok := enumValueMaps[props.Enum]
-		if !ok {
-			break
-		}
-		x, ok := m[tok.value]
-		if !ok {
-			break
-		}
-		fv.SetInt(int64(x))
-		return nil
-	case reflect.Int64:
-		if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
-			fv.SetInt(x)
-			return nil
-		}
-
-	case reflect.Ptr:
-		// A basic field (indirected through pointer), or a repeated message/group
-		p.back()
-		fv.Set(reflect.New(fv.Type().Elem()))
-		return p.readAny(fv.Elem(), props)
-	case reflect.String:
-		if tok.value[0] == '"' || tok.value[0] == '\'' {
-			fv.SetString(tok.unquoted)
-			return nil
-		}
-	case reflect.Struct:
-		var terminator string
-		switch tok.value {
-		case "{":
-			terminator = "}"
-		case "<":
-			terminator = ">"
-		default:
-			return p.errorf("expected '{' or '<', found %q", tok.value)
-		}
-		// TODO: Handle nested messages which implement encoding.TextUnmarshaler.
-		return p.readStruct(fv, terminator)
-	case reflect.Uint32:
-		if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
-			fv.SetUint(uint64(x))
-			return nil
-		}
-	case reflect.Uint64:
-		if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
-			fv.SetUint(x)
-			return nil
-		}
-	}
-	return p.errorf("invalid %v: %v", v.Type(), tok.value)
-}
-
-// UnmarshalText reads a protocol buffer in Text format. UnmarshalText resets pb
-// before starting to unmarshal, so any existing data in pb is always removed.
-// If a required field is not set and no other error occurs,
-// UnmarshalText returns *RequiredNotSetError.
-func UnmarshalText(s string, pb Message) error {
-	if um, ok := pb.(encoding.TextUnmarshaler); ok {
-		err := um.UnmarshalText([]byte(s))
-		return err
-	}
-	pb.Reset()
-	v := reflect.ValueOf(pb)
-	if pe := newTextParser(s).readStruct(v.Elem(), ""); pe != nil {
-		return pe
-	}
-	return nil
-}

vendor/github.com/yawning/bulb/.gitignore

@@ -1,5 +0,0 @@
-*.swp
-*~
-examples/basic/basic
-examples/listener/listener
-examples/dialer/dialer

vendor/github.com/yawning/bulb/LICENSE

@@ -1,122 +0,0 @@
-Creative Commons Legal Code
-
-CC0 1.0 Universal
-
-    CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
-    LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
-    ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
-    INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
-    REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
-    PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
-    THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
-    HEREUNDER.
-
-Statement of Purpose
-
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-and for any purposes, including without limitation commercial purposes.
-These owners may contribute to the Commons to promote the ideal of a free
-culture and the further production of creative, cultural and scientific
-works, or to gain reputation or greater distribution for their Work in
-part through the use and efforts of others.
-
-For these and/or other purposes and motivations, and without any
-expectation of additional consideration or compensation, the person
-associating CC0 with a Work (the "Affirmer"), to the extent that he or she
-is an owner of Copyright and Related Rights in the Work, voluntarily
-elects to apply CC0 to the Work and publicly distribute the Work under its
-terms, with knowledge of his or her Copyright and Related Rights in the
-Work and the meaning and intended legal effect of CC0 on those rights.
-
-1. Copyright and Related Rights. A Work made available under CC0 may be
-protected by copyright and related or neighboring rights ("Copyright and
-Related Rights"). Copyright and Related Rights include, but are not
-limited to, the following:
-
-  i. the right to reproduce, adapt, distribute, perform, display,
-     communicate, and translate a Work;
- ii. moral rights retained by the original author(s) and/or performer(s);
-iii. publicity and privacy rights pertaining to a person's image or
-     likeness depicted in a Work;
- iv. rights protecting against unfair competition in regards to a Work,
-     subject to the limitations in paragraph 4(a), below;
-  v. rights protecting the extraction, dissemination, use and reuse of data
-     in a Work;
- vi. database rights (such as those arising under Directive 96/9/EC of the
-     European Parliament and of the Council of 11 March 1996 on the legal
-     protection of databases, and under any national implementation
-     thereof, including any amended or successor version of such
-     directive); and
-vii. other similar, equivalent or corresponding rights throughout the
-     world based on applicable law or treaty, and any national
-     implementations thereof.
-
-2. Waiver. To the greatest extent permitted by, but not in contravention
-of, applicable law, Affirmer hereby overtly, fully, permanently,
-irrevocably and unconditionally waives, abandons, and surrenders all of
-Affirmer's Copyright and Related Rights and associated claims and causes
-of action, whether now known or unknown (including existing as well as
-future claims and causes of action), in the Work (i) in all territories
-worldwide, (ii) for the maximum duration provided by applicable law or
-treaty (including future time extensions), (iii) in any current or future
-medium and for any number of copies, and (iv) for any purpose whatsoever,
-including without limitation commercial, advertising or promotional
-purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
-member of the public at large and to the detriment of Affirmer's heirs and
-successors, fully intending that such Waiver shall not be subject to
-revocation, rescission, cancellation, termination, or any other legal or
-equitable action to disrupt the quiet enjoyment of the Work by the public
-as contemplated by Affirmer's express Statement of Purpose.
-
-3. Public License Fallback. Should any part of the Waiver for any reason
-be judged legally invalid or ineffective under applicable law, then the
-Waiver shall be preserved to the maximum extent permitted taking into
-account Affirmer's express Statement of Purpose. In addition, to the
-extent the Waiver is so judged Affirmer hereby grants to each affected
-person a royalty-free, non transferable, non sublicensable, non exclusive,
-irrevocable and unconditional license to exercise Affirmer's Copyright and
-Related Rights in the Work (i) in all territories worldwide, (ii) for the
-maximum duration provided by applicable law or treaty (including future
-time extensions), (iii) in any current or future medium and for any number
-of copies, and (iv) for any purpose whatsoever, including without
-limitation commercial, advertising or promotional purposes (the
-"License"). The License shall be deemed effective as of the date CC0 was
-applied by Affirmer to the Work. Should any part of the License for any
-reason be judged legally invalid or ineffective under applicable law, such
-partial invalidity or ineffectiveness shall not invalidate the remainder
-of the License, and in such case Affirmer hereby affirms that he or she
-will not (i) exercise any of his or her remaining Copyright and Related
-Rights in the Work or (ii) assert any associated claims and causes of
-action with respect to the Work, in either case contrary to Affirmer's
-express Statement of Purpose.
-
-4. Limitations and Disclaimers.
-
- a. No trademark or patent rights held by Affirmer are waived, abandoned,
-    surrendered, licensed or otherwise affected by this document.
- b. Affirmer offers the Work as-is and makes no representations or
-    warranties of any kind concerning the Work, express, implied,
-    statutory or otherwise, including without limitation warranties of
-    title, merchantability, fitness for a particular purpose, non
-    infringement, or the absence of latent or other defects, accuracy, or
-    the present or absence of errors, whether or not discoverable, all to
-    the greatest extent permissible under applicable law.
- c. Affirmer disclaims responsibility for clearing rights of other persons
-    that may apply to the Work or any use thereof, including without
-    limitation any person's Copyright and Related Rights in the Work.
-    Further, Affirmer disclaims responsibility for obtaining any necessary
-    consents, permissions or other rights required for any use of the
-    Work.
- d. Affirmer understands and acknowledges that Creative Commons is not a
-    party to this document and has no duty or obligation with respect to
-    this CC0 or use of the Work.
-

vendor/github.com/yawning/bulb/README.md

@@ -1,18 +0,0 @@
-## bulb - Is not stem
-### Yawning Angel (yawning at torproject dot org)
-
-bulb is a Go language interface to the Tor control port.  It is considerably
-lighter in functionality than stem and other controller libraries, and is
-intended to be used in combination with`control-spec.txt`.
-
-It was written primarily as a not-invented-here hack, and the base interface is
-more than likely to stay fairly low level, though useful helpers will be added
-as I need them.
-
-Things you should probably use instead:
- * [stem](https://stem.torproject.org)
- * [txtorcon](https://pypi.python.org/pypi/txtorcon)
- * [orc](https://github.com/sycamoreone/orc)
-
-Bugs:
- * bulb does not send the 'QUIT' command before closing the connection.

vendor/github.com/yawning/bulb/cmd_authenticate.go

@@ -1,137 +0,0 @@
-// cmd_authenticate.go - AUTHENTICATE/AUTHCHALLENGE commands.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"crypto/hmac"
-	"crypto/rand"
-	"crypto/sha256"
-	"encoding/hex"
-	"io/ioutil"
-	"strings"
-)
-
-// Authenticate authenticates with the Tor instance using the "best" possible
-// authentication method.  The password argument is entirely optional, and will
-// only be used if the "SAFECOOKE" and "NULL" authentication methods are not
-// available and "HASHEDPASSWORD" is.
-func (c *Conn) Authenticate(password string) error {
-	if c.isAuthenticated {
-		return nil
-	}
-
-	// Determine the supported authentication methods, and the cookie path.
-	pi, err := c.ProtocolInfo()
-	if err != nil {
-		return err
-	}
-
-	// "COOKIE" authentication exists, but anything modern supports
-	// "SAFECOOKIE".
-	const (
-		cmdAuthenticate      = "AUTHENTICATE"
-		authMethodNull       = "NULL"
-		authMethodPassword   = "HASHEDPASSWORD"
-		authMethodSafeCookie = "SAFECOOKIE"
-	)
-	if pi.AuthMethods[authMethodNull] {
-		_, err = c.Request(cmdAuthenticate)
-		c.isAuthenticated = err == nil
-		return err
-	} else if pi.AuthMethods[authMethodSafeCookie] {
-		const (
-			authCookieLength = 32
-			authNonceLength  = 32
-			authHashLength   = 32
-
-			authServerHashKey = "Tor safe cookie authentication server-to-controller hash"
-			authClientHashKey = "Tor safe cookie authentication controller-to-server hash"
-		)
-
-		if pi.CookieFile == "" {
-			return newProtocolError("invalid (empty) COOKIEFILE")
-		}
-		cookie, err := ioutil.ReadFile(pi.CookieFile)
-		if err != nil {
-			return newProtocolError("failed to read COOKIEFILE: %v", err)
-		} else if len(cookie) != authCookieLength {
-			return newProtocolError("invalid cookie file length: %d", len(cookie))
-		}
-
-		// Send an AUTHCHALLENGE command, and parse the response.
-		var clientNonce [authNonceLength]byte
-		if _, err := rand.Read(clientNonce[:]); err != nil {
-			return newProtocolError("failed to generate clientNonce: %v", err)
-		}
-		clientNonceStr := hex.EncodeToString(clientNonce[:])
-		resp, err := c.Request("AUTHCHALLENGE %s %s", authMethodSafeCookie, clientNonceStr)
-		if err != nil {
-			return err
-		}
-		splitResp := strings.Split(resp.Reply, " ")
-		if len(splitResp) != 3 {
-			return newProtocolError("invalid AUTHCHALLENGE response")
-		}
-		serverHashStr := strings.TrimPrefix(splitResp[1], "SERVERHASH=")
-		if serverHashStr == splitResp[1] {
-			return newProtocolError("missing SERVERHASH")
-		}
-		serverHash, err := hex.DecodeString(serverHashStr)
-		if err != nil {
-			return newProtocolError("failed to decode ServerHash: %v", err)
-		}
-		if len(serverHash) != authHashLength {
-			return newProtocolError("invalid ServerHash length: %d", len(serverHash))
-		}
-		serverNonceStr := strings.TrimPrefix(splitResp[2], "SERVERNONCE=")
-		if serverNonceStr == splitResp[2] {
-			return newProtocolError("missing SERVERNONCE")
-		}
-		serverNonce, err := hex.DecodeString(serverNonceStr)
-		if err != nil {
-			return newProtocolError("failed to decode ServerNonce: %v", err)
-		}
-		if len(serverNonce) != authNonceLength {
-			return newProtocolError("invalid ServerNonce length: %d", len(serverNonce))
-		}
-
-		// Validate the ServerHash.
-		m := hmac.New(sha256.New, []byte(authServerHashKey))
-		m.Write(cookie)
-		m.Write(clientNonce[:])
-		m.Write(serverNonce)
-		dervServerHash := m.Sum(nil)
-		if !hmac.Equal(serverHash, dervServerHash) {
-			return newProtocolError("invalid ServerHash: mismatch")
-		}
-
-		// Calculate the ClientHash, and issue the AUTHENTICATE.
-		m = hmac.New(sha256.New, []byte(authClientHashKey))
-		m.Write(cookie)
-		m.Write(clientNonce[:])
-		m.Write(serverNonce)
-		clientHash := m.Sum(nil)
-		clientHashStr := hex.EncodeToString(clientHash)
-
-		_, err = c.Request("%s %s", cmdAuthenticate, clientHashStr)
-		c.isAuthenticated = err == nil
-		return err
-	} else if pi.AuthMethods[authMethodPassword] {
-		// Despite the name HASHEDPASSWORD, the raw password is actually sent.
-		// According to the code, this can either be a QuotedString, or base16
-		// encoded, so go with the later since it's easier to handle.
-		if password == "" {
-			return newProtocolError("password auth needs a password")
-		}
-		passwordStr := hex.EncodeToString([]byte(password))
-		_, err = c.Request("%s %s", cmdAuthenticate, passwordStr)
-		c.isAuthenticated = err == nil
-		return err
-	}
-	return newProtocolError("no supported authentication methods")
-}

vendor/github.com/yawning/bulb/cmd_onion.go

@@ -1,186 +0,0 @@
-// cmd_onion.go - various onion service commands: ADD_ONION, DEL_ONION...
-//
-// To the extent possible under law, David Stainton and Ivan Markin waived
-// all copyright and related or neighboring rights to this module of bulb,
-// using the creative commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"crypto"
-	"crypto/rsa"
-	"encoding/base64"
-	"fmt"
-	"strings"
-
-	"github.com/yawning/bulb/utils/pkcs1"
-)
-
-// OnionInfo is the result of the AddOnion command.
-type OnionInfo struct {
-	OnionID    string
-	PrivateKey crypto.PrivateKey
-
-	RawResponse *Response
-}
-
-// OnionPrivateKey is a unknown Onion private key (crypto.PublicKey).
-type OnionPrivateKey struct {
-	KeyType string
-	Key     string
-}
-
-// OnionPortSpec is a Onion VirtPort/Target pair.
-type OnionPortSpec struct {
-	VirtPort uint16
-	Target   string
-}
-
-// NewOnionConfig is a configuration for NewOnion command.
-type NewOnionConfig struct {
-	PortSpecs    []OnionPortSpec
-	PrivateKey   crypto.PrivateKey
-	DiscardPK    bool
-	Detach       bool
-	BasicAuth    bool
-	NonAnonymous bool
-}
-
-// NewOnion issues an ADD_ONION command using configuration config and
-// returns the parsed response.
-func (c *Conn) NewOnion(config *NewOnionConfig) (*OnionInfo, error) {
-	const keyTypeRSA = "RSA1024"
-	var err error
-
-	var portStr string
-	if config.PortSpecs == nil {
-		return nil, newProtocolError("invalid port specification")
-	}
-	for _, v := range config.PortSpecs {
-		portStr += fmt.Sprintf(" Port=%d", v.VirtPort)
-		if v.Target != "" {
-			portStr += "," + v.Target
-		}
-	}
-
-	var hsKeyType, hsKeyStr string
-	if config.PrivateKey != nil {
-		switch t := config.PrivateKey.(type) {
-		case *rsa.PrivateKey:
-			rsaPK, _ := config.PrivateKey.(*rsa.PrivateKey)
-			if rsaPK.N.BitLen() != 1024 {
-				return nil, newProtocolError("invalid RSA key size")
-			}
-			pkDER, err := pkcs1.EncodePrivateKeyDER(rsaPK)
-			if err != nil {
-				return nil, newProtocolError("failed to serialize RSA key: %v", err)
-			}
-			hsKeyType = keyTypeRSA
-			hsKeyStr = base64.StdEncoding.EncodeToString(pkDER)
-		case *OnionPrivateKey:
-			genericPK, _ := config.PrivateKey.(*OnionPrivateKey)
-			hsKeyType = genericPK.KeyType
-			hsKeyStr = genericPK.Key
-		default:
-			return nil, newProtocolError("unsupported private key type: %v", t)
-		}
-	} else {
-		hsKeyStr = "BEST"
-		hsKeyType = "NEW"
-	}
-
-	var flags []string
-	var flagsStr string
-
-	if config.DiscardPK {
-		flags = append(flags, "DiscardPK")
-	}
-	if config.Detach {
-		flags = append(flags, "Detach")
-	}
-	if config.BasicAuth {
-		flags = append(flags, "BasicAuth")
-	}
-	if config.NonAnonymous {
-		flags = append(flags, "NonAnonymous")
-	}
-	if flags != nil {
-		flagsStr = " Flags="
-		flagsStr += strings.Join(flags, ",")
-	}
-	request := fmt.Sprintf("ADD_ONION %s:%s%s%s", hsKeyType, hsKeyStr, portStr, flagsStr)
-	resp, err := c.Request(request)
-	if err != nil {
-		return nil, err
-	}
-
-	// Parse out the response.
-	var serviceID string
-	var hsPrivateKey crypto.PrivateKey
-	for _, l := range resp.Data {
-		const (
-			serviceIDPrefix  = "ServiceID="
-			privateKeyPrefix = "PrivateKey="
-		)
-
-		if strings.HasPrefix(l, serviceIDPrefix) {
-			serviceID = strings.TrimPrefix(l, serviceIDPrefix)
-		} else if strings.HasPrefix(l, privateKeyPrefix) {
-			if config.DiscardPK || hsKeyStr != "" {
-				return nil, newProtocolError("received an unexpected private key")
-			}
-			hsKeyStr = strings.TrimPrefix(l, privateKeyPrefix)
-			splitKey := strings.SplitN(hsKeyStr, ":", 2)
-			if len(splitKey) != 2 {
-				return nil, newProtocolError("failed to parse private key type")
-			}
-
-			switch splitKey[0] {
-			case keyTypeRSA:
-				keyBlob, err := base64.StdEncoding.DecodeString(splitKey[1])
-				if err != nil {
-					return nil, newProtocolError("failed to base64 decode RSA key: %v", err)
-				}
-				hsPrivateKey, _, err = pkcs1.DecodePrivateKeyDER(keyBlob)
-				if err != nil {
-					return nil, newProtocolError("failed to deserialize RSA key: %v", err)
-				}
-			default:
-				hsPrivateKey := new(OnionPrivateKey)
-				hsPrivateKey.KeyType = splitKey[0]
-				hsPrivateKey.Key = splitKey[1]
-			}
-		}
-	}
-	if serviceID == "" {
-		// This should *NEVER* happen, since the command succeded, and the spec
-		// guarantees that this will always be present.
-		return nil, newProtocolError("failed to determine service ID")
-	}
-
-	oi := new(OnionInfo)
-	oi.RawResponse = resp
-	oi.OnionID = serviceID
-	oi.PrivateKey = hsPrivateKey
-
-	return oi, nil
-}
-
-// [DEPRECATED] AddOnion issues an ADD_ONION command and
-// returns the parsed response.
-func (c *Conn) AddOnion(ports []OnionPortSpec, key crypto.PrivateKey, oneshot bool) (*OnionInfo, error) {
-	cfg := &NewOnionConfig{}
-	cfg.PortSpecs = ports
-	if key != nil {
-		cfg.PrivateKey = key
-	}
-	cfg.DiscardPK = oneshot
-	return c.NewOnion(cfg)
-}
-
-// DeleteOnion issues a DEL_ONION command and returns the parsed response.
-func (c *Conn) DeleteOnion(serviceID string) error {
-	_, err := c.Request("DEL_ONION %s", serviceID)
-	return err
-}

vendor/github.com/yawning/bulb/cmd_protocolinfo.go

@@ -1,95 +0,0 @@
-// cmd_protocolinfo.go - PROTOCOLINFO command.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"strconv"
-	"strings"
-
-	"github.com/yawning/bulb/utils"
-)
-
-// ProtocolInfo is the result of the ProtocolInfo command.
-type ProtocolInfo struct {
-	AuthMethods map[string]bool
-	CookieFile  string
-	TorVersion  string
-
-	RawResponse *Response
-}
-
-// ProtocolInfo issues a PROTOCOLINFO command and returns the parsed response.
-func (c *Conn) ProtocolInfo() (*ProtocolInfo, error) {
-	// In the pre-authentication state, only one PROTOCOLINFO command
-	// may be issued.  Cache the value returned so that subsequent
-	// calls continue to work.
-	if !c.isAuthenticated && c.cachedPI != nil {
-		return c.cachedPI, nil
-	}
-
-	resp, err := c.Request("PROTOCOLINFO")
-	if err != nil {
-		return nil, err
-	}
-
-	// Parse out the PIVERSION to make sure it speaks something we understand.
-	if len(resp.Data) < 1 {
-		return nil, newProtocolError("missing PIVERSION")
-	}
-	switch resp.Data[0] {
-	case "1":
-		return nil, newProtocolError("invalid PIVERSION: '%s'", resp.Reply)
-	default:
-	}
-
-	// Parse out the rest of the lines.
-	pi := new(ProtocolInfo)
-	pi.RawResponse = resp
-	pi.AuthMethods = make(map[string]bool)
-	for i := 1; i < len(resp.Data); i++ {
-		splitLine := utils.SplitQuoted(resp.Data[i], '"', ' ')
-		switch splitLine[0] {
-		case "AUTH":
-			// Parse an AuthLine detailing how to authenticate.
-			if len(splitLine) < 2 {
-				continue
-			}
-			methods := strings.TrimPrefix(splitLine[1], "METHODS=")
-			if methods == splitLine[1] {
-				continue
-			}
-			for _, meth := range strings.Split(methods, ",") {
-				pi.AuthMethods[meth] = true
-			}
-
-			if len(splitLine) < 3 {
-				continue
-			}
-			cookiePath := strings.TrimPrefix(splitLine[2], "COOKIEFILE=")
-			if cookiePath == splitLine[2] {
-				continue
-			}
-			pi.CookieFile, _ = strconv.Unquote(cookiePath)
-		case "VERSION":
-			// Parse a VersionLine detailing the Tor version.
-			if len(splitLine) < 2 {
-				continue
-			}
-			torVersion := strings.TrimPrefix(splitLine[1], "Tor=")
-			if torVersion == splitLine[1] {
-				continue
-			}
-			pi.TorVersion, _ = strconv.Unquote(torVersion)
-		default: // MUST ignore unsupported InfoLines.
-		}
-	}
-	if !c.isAuthenticated {
-		c.cachedPI = pi
-	}
-	return pi, nil
-}

vendor/github.com/yawning/bulb/conn.go

@@ -1,233 +0,0 @@
-// conn.go - Controller connection instance.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-// Package bulb is a Go language interface to a Tor control port.
-package bulb
-
-import (
-	"errors"
-	gofmt "fmt"
-	"io"
-	"log"
-	"net"
-	"net/textproto"
-	"sync"
-)
-
-const (
-	maxEventBacklog    = 16
-	maxResponseBacklog = 16
-)
-
-// ErrNoAsyncReader is the error returned when the asynchronous event handling
-// is requested, but the helper go routine has not been started.
-var ErrNoAsyncReader = errors.New("event requested without an async reader")
-
-// Conn is a control port connection instance.
-type Conn struct {
-	conn            *textproto.Conn
-	isAuthenticated bool
-	debugLog        bool
-	cachedPI        *ProtocolInfo
-
-	asyncReaderLock    sync.Mutex
-	asyncReaderRunning bool
-	eventChan          chan *Response
-	respChan           chan *Response
-	closeWg            sync.WaitGroup
-
-	rdErrLock sync.Mutex
-	rdErr     error
-}
-
-func (c *Conn) setRdErr(err error, force bool) {
-	c.rdErrLock.Lock()
-	defer c.rdErrLock.Unlock()
-	if c.rdErr == nil || force {
-		c.rdErr = err
-	}
-}
-
-func (c *Conn) getRdErr() error {
-	c.rdErrLock.Lock()
-	defer c.rdErrLock.Unlock()
-	return c.rdErr
-}
-
-func (c *Conn) isAsyncReaderRunning() bool {
-	c.asyncReaderLock.Lock()
-	defer c.asyncReaderLock.Unlock()
-	return c.asyncReaderRunning
-}
-
-func (c *Conn) asyncReader() {
-	for {
-		resp, err := c.ReadResponse()
-		if err != nil {
-			c.setRdErr(err, false)
-			break
-		}
-		if resp.IsAsync() {
-			c.eventChan <- resp
-		} else {
-			c.respChan <- resp
-		}
-	}
-	close(c.eventChan)
-	close(c.respChan)
-	c.closeWg.Done()
-
-	// In theory, we would lock and set asyncReaderRunning to false here, but
-	// once it's started, the only way it returns is if there is a catastrophic
-	// failure, or a graceful shutdown.  Changing this will require redoing how
-	// Close() works.
-}
-
-// Debug enables/disables debug logging of control port chatter.
-func (c *Conn) Debug(enable bool) {
-	c.debugLog = enable
-}
-
-// Close closes the connection.
-func (c *Conn) Close() error {
-	c.asyncReaderLock.Lock()
-	defer c.asyncReaderLock.Unlock()
-
-	err := c.conn.Close()
-	if err != nil && c.asyncReaderRunning {
-		c.closeWg.Wait()
-	}
-	c.setRdErr(io.ErrClosedPipe, true)
-	return err
-}
-
-// StartAsyncReader starts the asynchronous reader go routine that allows
-// asynchronous events to be handled.  It must not be called simultaniously
-// with Read, Request, or ReadResponse or undefined behavior will occur.
-func (c *Conn) StartAsyncReader() {
-	c.asyncReaderLock.Lock()
-	defer c.asyncReaderLock.Unlock()
-	if c.asyncReaderRunning {
-		return
-	}
-
-	// Allocate the channels and kick off the read worker.
-	c.eventChan = make(chan *Response, maxEventBacklog)
-	c.respChan = make(chan *Response, maxResponseBacklog)
-	c.closeWg.Add(1)
-	go c.asyncReader()
-	c.asyncReaderRunning = true
-}
-
-// NextEvent returns the next asynchronous event received, blocking if
-// neccecary.  In order to enable asynchronous event handling, StartAsyncReader
-// must be called first.
-func (c *Conn) NextEvent() (*Response, error) {
-	if err := c.getRdErr(); err != nil {
-		return nil, err
-	}
-	if !c.isAsyncReaderRunning() {
-		return nil, ErrNoAsyncReader
-	}
-
-	resp, ok := <-c.eventChan
-	if resp != nil {
-		return resp, nil
-	} else if !ok {
-		return nil, io.ErrClosedPipe
-	}
-	panic("BUG: NextEvent() returned a nil response and error")
-}
-
-// Request sends a raw control port request and returns the response.
-// If the async. reader is not currently running, events received while waiting
-// for the response will be silently dropped.  Calling Request simultaniously
-// with StartAsyncReader, Read, Write, or ReadResponse will lead to undefined
-// behavior.
-func (c *Conn) Request(fmt string, args ...interface{}) (*Response, error) {
-	if err := c.getRdErr(); err != nil {
-		return nil, err
-	}
-	asyncResp := c.isAsyncReaderRunning()
-
-	if c.debugLog {
-		log.Printf("C: %s", gofmt.Sprintf(fmt, args...))
-	}
-
-	id, err := c.conn.Cmd(fmt, args...)
-	if err != nil {
-		return nil, err
-	}
-
-	c.conn.StartResponse(id)
-	defer c.conn.EndResponse(id)
-	var resp *Response
-	if asyncResp {
-		var ok bool
-		resp, ok = <-c.respChan
-		if resp == nil && !ok {
-			return nil, io.ErrClosedPipe
-		}
-	} else {
-		// Event handing requires the asyncReader() goroutine, try to get a
-		// response, while silently swallowing events.
-		for resp == nil || resp.IsAsync() {
-			resp, err = c.ReadResponse()
-			if err != nil {
-				return nil, err
-			}
-		}
-	}
-	if resp == nil {
-		panic("BUG: Request() returned a nil response and error")
-	}
-	if resp.IsOk() {
-		return resp, nil
-	}
-	return resp, resp.Err
-}
-
-// Read reads directly from the control port connection.  Mixing this call
-// with Request, ReadResponse, or asynchronous events will lead to undefined
-// behavior.
-func (c *Conn) Read(p []byte) (int, error) {
-	return c.conn.R.Read(p)
-}
-
-// Write writes directly from the control port connection.  Mixing this call
-// with Request will lead to undefined behavior.
-func (c *Conn) Write(p []byte) (int, error) {
-	n, err := c.conn.W.Write(p)
-	if err == nil {
-		// If the write succeeds, but the flush fails, n will be incorrect...
-		return n, c.conn.W.Flush()
-	}
-	return n, err
-}
-
-// Dial connects to a given network/address and returns a new Conn for the
-// connection.
-func Dial(network, addr string) (*Conn, error) {
-	c, err := net.Dial(network, addr)
-	if err != nil {
-		return nil, err
-	}
-	return NewConn(c), nil
-}
-
-// NewConn returns a new Conn using c for I/O.
-func NewConn(c io.ReadWriteCloser) *Conn {
-	conn := new(Conn)
-	conn.conn = textproto.NewConn(c)
-	return conn
-}
-
-func newProtocolError(fmt string, args ...interface{}) textproto.ProtocolError {
-	return textproto.ProtocolError(gofmt.Sprintf(fmt, args...))
-}
-
-var _ io.ReadWriteCloser = (*Conn)(nil)

vendor/github.com/yawning/bulb/dialer.go

@@ -1,54 +0,0 @@
-// dialer.go - Tor backed proxy.Dialer.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"strconv"
-	"strings"
-
-	"golang.org/x/net/proxy"
-)
-
-// Dialer returns a proxy.Dialer for the given Tor instance.
-func (c *Conn) Dialer(auth *proxy.Auth) (proxy.Dialer, error) {
-	const (
-		cmdGetInfo     = "GETINFO"
-		socksListeners = "net/listeners/socks"
-		unixPrefix     = "unix:"
-	)
-
-	// Query for the SOCKS listeners via a GETINFO request.
-	resp, err := c.Request("%s %s", cmdGetInfo, socksListeners)
-	if err != nil {
-		return nil, err
-	}
-
-	if len(resp.Data) != 1 {
-		return nil, newProtocolError("no SOCKS listeners configured")
-	}
-	splitResp := strings.Split(resp.Data[0], " ")
-	if len(splitResp) < 1 {
-		return nil, newProtocolError("no SOCKS listeners configured")
-	}
-
-	// The first listener will have a "net/listeners/socks=" prefix, and all
-	// entries are QuotedStrings.
-	laddrStr := strings.TrimPrefix(splitResp[0], socksListeners+"=")
-	if laddrStr == splitResp[0] {
-		return nil, newProtocolError("failed to parse SOCKS listener")
-	}
-	laddrStr, _ = strconv.Unquote(laddrStr)
-
-	// Construct the proxyDialer.
-	if strings.HasPrefix(laddrStr, unixPrefix) {
-		unixPath := strings.TrimPrefix(laddrStr, unixPrefix)
-		return proxy.SOCKS5("unix", unixPath, auth, proxy.Direct)
-	}
-
-	return proxy.SOCKS5("tcp", laddrStr, auth, proxy.Direct)
-}

vendor/github.com/yawning/bulb/listener.go

@@ -1,116 +0,0 @@
-// listener.go - Tor backed net.Listener.
-//
-// To the extent possible under law, Yawning Angel and Ivan Markin
-// waived all copyright and related or neighboring rights to bulb, using
-// the creative commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"crypto"
-	"fmt"
-	"net"
-	"strconv"
-)
-
-type onionAddr struct {
-	info *OnionInfo
-	port uint16
-}
-
-func (a *onionAddr) Network() string {
-	return "tcp"
-}
-
-func (a *onionAddr) String() string {
-	return fmt.Sprintf("%s.onion:%d", a.info.OnionID, a.port)
-}
-
-type onionListener struct {
-	addr     *onionAddr
-	ctrlConn *Conn
-	listener net.Listener
-}
-
-func (l *onionListener) Accept() (net.Conn, error) {
-	return l.listener.Accept()
-}
-
-func (l *onionListener) Close() (err error) {
-	if err = l.listener.Close(); err == nil {
-		// Only delete the onion once.
-		err = l.ctrlConn.DeleteOnion(l.addr.info.OnionID)
-	}
-	return err
-}
-
-func (l *onionListener) Addr() net.Addr {
-	return l.addr
-}
-
-// NewListener returns a net.Listener backed by an Onion Service using configuration
-// config, optionally having Tor generate an ephemeral private key (config is nil or
-// config.PrivateKey is nil).
-// All of virtual ports specified in vports will be mapped to the port to which
-// the underlying TCP listener binded. PortSpecs in config will be ignored since
-// there is only one mapping for a vports set is possible.
-func (c *Conn) NewListener(config *NewOnionConfig, vports ...uint16) (net.Listener, error) {
-	var cfg NewOnionConfig
-	if config == nil {
-		cfg = NewOnionConfig{
-			DiscardPK: true,
-		}
-	} else {
-		cfg = *config
-	}
-
-	const loopbackAddr = "127.0.0.1:0"
-
-	// Listen on the loopback interface.
-	tcpListener, err := net.Listen("tcp4", loopbackAddr)
-	if err != nil {
-		return nil, err
-	}
-	tAddr, ok := tcpListener.Addr().(*net.TCPAddr)
-	if !ok {
-		tcpListener.Close()
-		return nil, newProtocolError("failed to extract local port")
-	}
-
-	if len(vports) < 1 {
-		return nil, newProtocolError("no virual ports specified")
-	}
-	targetPortStr := strconv.FormatUint((uint64)(tAddr.Port), 10)
-	var portSpecs []OnionPortSpec
-	for _, vport := range vports {
-		portSpecs = append(portSpecs, OnionPortSpec{
-			VirtPort: vport,
-			Target:   targetPortStr,
-		})
-	}
-	cfg.PortSpecs = portSpecs
-	// Create the onion.
-	oi, err := c.NewOnion(&cfg)
-	if err != nil {
-		tcpListener.Close()
-		return nil, err
-	}
-
-	oa := &onionAddr{info: oi, port: vports[0]}
-	ol := &onionListener{addr: oa, ctrlConn: c, listener: tcpListener}
-
-	return ol, nil
-}
-
-// [DEPRECATED] Listener returns a net.Listener backed by an Onion Service.
-func (c *Conn) Listener(port uint16, key crypto.PrivateKey) (net.Listener, error) {
-	cfg := &NewOnionConfig{}
-	if key != nil {
-		cfg.PrivateKey = key
-		cfg.DiscardPK = false
-	} else {
-		cfg.DiscardPK = true
-	}
-	return c.NewListener(cfg, port)
-}

vendor/github.com/yawning/bulb/response.go

@@ -1,125 +0,0 @@
-// response.go - Generic response handler
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"log"
-	"net/textproto"
-	"strconv"
-	"strings"
-)
-
-// Response is a response to a control port command, or an asyncrhonous event.
-type Response struct {
-	// Err is the status code and string representation associated with a
-	// response.  Responses that have completed successfully will also have
-	// Err set to indicate such.
-	Err *textproto.Error
-
-	// Reply is the text on the EndReplyLine of the response.
-	Reply string
-
-	// Data is the MidReplyLines/DataReplyLines of the response.  Dot encoded
-	// data is "decoded" and presented as a single string (terminal ".CRLF"
-	// removed, all intervening CRs stripped).
-	Data []string
-
-	// RawLines is all of the lines of a response, without CRLFs.
-	RawLines []string
-}
-
-// IsOk returns true if the response status code indicates success or
-// an asynchronous event.
-func (r *Response) IsOk() bool {
-	switch r.Err.Code {
-	case StatusOk, StatusOkUnneccecary, StatusAsyncEvent:
-		return true
-	default:
-		return false
-	}
-}
-
-// IsAsync returns true if the response is an asyncrhonous event.
-func (r *Response) IsAsync() bool {
-	return r.Err.Code == StatusAsyncEvent
-}
-
-// ReadResponse returns the next response object. Calling this
-// simultaniously with Read, Request, or StartAsyncReader will lead to
-// undefined behavior
-func (c *Conn) ReadResponse() (*Response, error) {
-	var resp *Response
-	var statusCode int
-	for {
-		line, err := c.conn.ReadLine()
-		if err != nil {
-			return nil, err
-		}
-		if c.debugLog {
-			log.Printf("S: %s", line)
-		}
-
-		// Parse the line that was just read.
-		if len(line) < 4 {
-			return nil, newProtocolError("truncated response: '%s'", line)
-		}
-		if code, err := strconv.Atoi(line[0:3]); err != nil {
-			return nil, newProtocolError("invalid status code: '%s'", line[0:3])
-		} else if code < 100 {
-			return nil, newProtocolError("invalid status code: '%s'", line[0:3])
-		} else if resp == nil {
-			resp = new(Response)
-			statusCode = code
-		} else if code != statusCode {
-			// The status code should stay fixed for all lines of the
-			// response, since events can't be interleaved with response
-			// lines.
-			return nil, newProtocolError("status code changed: %03d != %03d", code, statusCode)
-		}
-		if resp.RawLines == nil {
-			resp.RawLines = make([]string, 0, 1)
-		}
-
-		if line[3] == ' ' {
-			// Final line in the response.
-			resp.Reply = line[4:]
-			resp.Err = statusCodeToError(statusCode, resp.Reply)
-			resp.RawLines = append(resp.RawLines, line)
-			return resp, nil
-		}
-
-		if resp.Data == nil {
-			resp.Data = make([]string, 0, 1)
-		}
-		switch line[3] {
-		case '-':
-			// Continuation, keep reading.
-			resp.Data = append(resp.Data, line[4:])
-			resp.RawLines = append(resp.RawLines, line)
-		case '+':
-			// A "dot-encoded" payload follows.
-			resp.Data = append(resp.Data, line[4:])
-			resp.RawLines = append(resp.RawLines, line)
-			dotBody, err := c.conn.ReadDotBytes()
-			if err != nil {
-				return nil, err
-			}
-			if c.debugLog {
-				log.Printf("S: [dot encoded data]")
-			}
-			resp.Data = append(resp.Data, strings.TrimRight(string(dotBody), "\n\r"))
-			dotLines := strings.Split(string(dotBody), "\n")
-			for _, dotLine := range dotLines[:len(dotLines)-1] {
-				resp.RawLines = append(resp.RawLines, dotLine)
-			}
-			resp.RawLines = append(resp.RawLines, ".")
-		default:
-			return nil, newProtocolError("invalid separator: '%c'", line[3])
-		}
-	}
-}

vendor/github.com/yawning/bulb/status.go

@@ -1,71 +0,0 @@
-// status.go - Status codes.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-package bulb
-
-import (
-	"fmt"
-	"strings"
-	"net/textproto"
-)
-
-// The various control port StatusCode constants.
-const (
-	StatusOk            = 250
-	StatusOkUnneccecary = 251
-
-	StatusErrResourceExhausted      = 451
-	StatusErrSyntaxError            = 500
-	StatusErrUnrecognizedCmd        = 510
-	StatusErrUnimplementedCmd       = 511
-	StatusErrSyntaxErrorArg         = 512
-	StatusErrUnrecognizedCmdArg     = 513
-	StatusErrAuthenticationRequired = 514
-	StatusErrBadAuthentication      = 515
-	StatusErrUnspecifiedTorError    = 550
-	StatusErrInternalError          = 551
-	StatusErrUnrecognizedEntity     = 552
-	StatusErrInvalidConfigValue     = 553
-	StatusErrInvalidDescriptor      = 554
-	StatusErrUnmanagedEntity        = 555
-
-	StatusAsyncEvent = 650
-)
-
-var statusCodeStringMap = map[int]string{
-	StatusOk:            "OK",
-	StatusOkUnneccecary: "Operation was unnecessary",
-
-	StatusErrResourceExhausted:      "Resource exhausted",
-	StatusErrSyntaxError:            "Syntax error: protocol",
-	StatusErrUnrecognizedCmd:        "Unrecognized command",
-	StatusErrUnimplementedCmd:       "Unimplemented command",
-	StatusErrSyntaxErrorArg:         "Syntax error in command argument",
-	StatusErrUnrecognizedCmdArg:     "Unrecognized command argument",
-	StatusErrAuthenticationRequired: "Authentication required",
-	StatusErrBadAuthentication:      "Bad authentication",
-	StatusErrUnspecifiedTorError:    "Unspecified Tor error",
-	StatusErrInternalError:          "Internal error",
-	StatusErrUnrecognizedEntity:     "Unrecognized entity",
-	StatusErrInvalidConfigValue:     "Invalid configuration value",
-	StatusErrInvalidDescriptor:      "Invalid descriptor",
-	StatusErrUnmanagedEntity:        "Unmanaged entity",
-
-	StatusAsyncEvent: "Asynchronous event notification",
-}
-
-func statusCodeToError(code int, reply string) *textproto.Error {
-	err := new(textproto.Error)
-	err.Code = code
-	if msg, ok := statusCodeStringMap[code]; ok {
-		trimmedReply := strings.TrimSpace(strings.TrimPrefix(reply, msg))
-		err.Msg = fmt.Sprintf("%s: %s", msg, trimmedReply)
-	} else {
-		err.Msg = fmt.Sprintf("Unknown status code (%03d): %s", code, reply)
-	}
-	return err
-}

vendor/github.com/yawning/bulb/utils/pkcs1/rsa.go

@@ -1,101 +0,0 @@
-//
-// rsa.go - PKCS#1 RSA key related helpers.
-//
-// To the extent possible under law, Yawning Angel has waived all copyright and
-// related or neighboring rights to bulb, using the creative commons
-// "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-// Package pkcs1 implements PKCS#1 RSA key marshalling/unmarshalling,
-// compatibile with Tor's usage.
-package pkcs1
-
-import (
-	"crypto/rsa"
-	"crypto/sha1"
-	"encoding/asn1"
-	"encoding/base32"
-	"math/big"
-	"strings"
-)
-
-type pkcs1RSAPrivKey struct {
-	Version int      // version
-	N       *big.Int // modulus
-	E       int      // publicExponent
-	D       *big.Int // privateExponent
-	P       *big.Int // prime1
-	Q       *big.Int // prime2
-	Dp      *big.Int // exponent1: d mod (p-1)
-	Dq      *big.Int // exponent2: d mod (q-1)
-	Qinv    *big.Int // coefficient: (inverse of q) mod p
-}
-
-// EncodePrivateKeyDER returns the PKCS#1 DER encoding of a rsa.PrivateKey.
-func EncodePrivateKeyDER(sk *rsa.PrivateKey) ([]byte, error) {
-	// The crypto.RSA structure has a slightly different layout than PKCS#1
-	// private keys, so directly marshaling does not work.  Pull out the values
-	// into a strucuture with the correct layout and marshal.
-	sk.Precompute() // Ensure that the structure is fully populated.
-	k := pkcs1RSAPrivKey{
-		Version: 0,
-		N:       sk.N,
-		E:       sk.E,
-		D:       sk.D,
-		P:       sk.Primes[0],
-		Q:       sk.Primes[1],
-		Dp:      sk.Precomputed.Dp,
-		Dq:      sk.Precomputed.Dq,
-		Qinv:    sk.Precomputed.Qinv,
-	}
-	return asn1.Marshal(k)
-}
-
-// DecodePrivateKeyDER returns the rsa.PrivateKey decoding of a PKCS#1 DER blob.
-func DecodePrivateKeyDER(b []byte) (*rsa.PrivateKey, []byte, error) {
-	var k pkcs1RSAPrivKey
-	rest, err := asn1.Unmarshal(b, &k)
-	if err == nil {
-		sk := &rsa.PrivateKey{}
-		sk.Primes = make([]*big.Int, 2)
-		sk.N = k.N
-		sk.E = k.E
-		sk.D = k.D
-		sk.Primes[0] = k.P
-		sk.Primes[1] = k.Q
-
-		// Ignore the precomputed values and just rederive them.
-		sk.Precompute()
-		return sk, rest, nil
-	}
-	return nil, rest, err
-}
-
-// EncodePublicKeyDER returns the PKCS#1 DER encoding of a rsa.PublicKey.
-func EncodePublicKeyDER(pk *rsa.PublicKey) ([]byte, error) {
-	// The crypto.RSA structure is exactly the same as the PCKS#1 public keys,
-	// when the encoding/asn.1 marshaller is done with it.
-	//
-	// DER encoding of (SEQUENCE | INTEGER(n) | INTEGER(e))
-	return asn1.Marshal(*pk)
-}
-
-// DecodePublicKeyDER returns the rsa.PublicKey decoding of a PKCS#1 DER blob.
-func DecodePublicKeyDER(b []byte) (*rsa.PublicKey, []byte, error) {
-	pk := &rsa.PublicKey{}
-	rest, err := asn1.Unmarshal(b, pk)
-	return pk, rest, err
-}
-
-// OnionAddr returns the Tor Onion Service address corresponding to a given
-// rsa.PublicKey.
-func OnionAddr(pk *rsa.PublicKey) (string, error) {
-	der, err := EncodePublicKeyDER(pk)
-	if err != nil {
-		return "", err
-	}
-	h := sha1.Sum(der)
-	hb32 := base32.StdEncoding.EncodeToString(h[:10])
-
-	return strings.ToLower(hb32), nil
-}

vendor/github.com/yawning/bulb/utils/utils.go

@@ -1,81 +0,0 @@
-// utils.go - A grab bag of useful utilitiy functions.
-//
-// To the extent possible under law, Yawning Angel waived all copyright
-// and related or neighboring rights to bulb, using the creative
-// commons "cc0" public domain dedication. See LICENSE or
-// <http://creativecommons.org/publicdomain/zero/1.0/> for full details.
-
-// Package utils implements useful utilities for dealing with Tor and it's
-// control port.
-package utils
-
-import (
-	"net"
-	"net/url"
-	"strconv"
-)
-
-// SplitQuoted splits s by sep if it is found outside substring
-// quoted by quote.
-func SplitQuoted(s string, quote, sep rune) (splitted []string) {
-        quoteFlag := false
-NewSubstring:
-        for i, c := range s {
-                if c == quote {
-                        quoteFlag = !quoteFlag
-                }
-                if c == sep && !quoteFlag {
-                        splitted = append(splitted, s[:i])
-                        s = s[i+1:]
-                        goto NewSubstring
-                }
-        }
-        return append(splitted, s)
-}
-
-// ParseControlPortString parses a string representation of a control port
-// address into a network/address string pair suitable for use with "dial".
-//
-// Valid string representations are:
-//  * tcp://address:port
-//  * unix://path
-//  * port (Translates to tcp://127.0.0.1:port)
-func ParseControlPortString(raw string) (network, addr string, err error) {
-	// Try parsing it as a naked port.
-	if _, err = strconv.ParseUint(raw, 10, 16); err == nil {
-		raw = "tcp://127.0.0.1:" + raw
-	}
-
-	// Ok, parse/validate the URI.
-	uri, err := url.Parse(raw)
-	if err != nil {
-		return "", "", err
-	}
-	if uri.Opaque != "" || uri.RawQuery != "" || uri.Fragment != "" {
-		return "", "", net.InvalidAddrError("uri has Opaque/Query/Fragment")
-	}
-	switch uri.Scheme {
-	case "tcp":
-		if uri.Path != "" {
-			return "", "", net.InvalidAddrError("tcp uri has a path")
-		}
-		tcpAddr, err := net.ResolveTCPAddr(uri.Scheme, uri.Host)
-		if err != nil {
-			return "", "", err
-		}
-		if tcpAddr.Port == 0 {
-			return "", "", net.InvalidAddrError("tcp uri is missing a port")
-		}
-		return uri.Scheme, uri.Host, nil
-	case "unix":
-		if uri.Host != "" {
-			return "", "", net.InvalidAddrError("unix uri has a host")
-		}
-		_, err := net.ResolveUnixAddr(uri.Scheme, uri.Path)
-		if err != nil {
-			return "", "", err
-		}
-		return uri.Scheme, uri.Path, nil
-	}
-	return "", "", net.InvalidAddrError("unknown scheme: " + uri.Scheme)
-}

vendor/golang.org/x/net/AUTHORS

@@ -1,3 +0,0 @@
-# This source code refers to The Go Authors for copyright purposes.
-# The master list of authors is in the main Go distribution,
-# visible at http://tip.golang.org/AUTHORS.

vendor/golang.org/x/net/CONTRIBUTORS

@@ -1,3 +0,0 @@
-# This source code was written by the Go contributors.
-# The master list of contributors is in the main Go distribution,
-# visible at http://tip.golang.org/CONTRIBUTORS.

vendor/golang.org/x/net/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/net/PATENTS

@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.

vendor/golang.org/x/net/proxy/direct.go

@@ -1,18 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
-	"net"
-)
-
-type direct struct{}
-
-// Direct is a direct proxy: one that makes network connections directly.
-var Direct = direct{}
-
-func (direct) Dial(network, addr string) (net.Conn, error) {
-	return net.Dial(network, addr)
-}

vendor/golang.org/x/net/proxy/per_host.go

@@ -1,140 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
-	"net"
-	"strings"
-)
-
-// A PerHost directs connections to a default Dialer unless the hostname
-// requested matches one of a number of exceptions.
-type PerHost struct {
-	def, bypass Dialer
-
-	bypassNetworks []*net.IPNet
-	bypassIPs      []net.IP
-	bypassZones    []string
-	bypassHosts    []string
-}
-
-// NewPerHost returns a PerHost Dialer that directs connections to either
-// defaultDialer or bypass, depending on whether the connection matches one of
-// the configured rules.
-func NewPerHost(defaultDialer, bypass Dialer) *PerHost {
-	return &PerHost{
-		def:    defaultDialer,
-		bypass: bypass,
-	}
-}
-
-// Dial connects to the address addr on the given network through either
-// defaultDialer or bypass.
-func (p *PerHost) Dial(network, addr string) (c net.Conn, err error) {
-	host, _, err := net.SplitHostPort(addr)
-	if err != nil {
-		return nil, err
-	}
-
-	return p.dialerForRequest(host).Dial(network, addr)
-}
-
-func (p *PerHost) dialerForRequest(host string) Dialer {
-	if ip := net.ParseIP(host); ip != nil {
-		for _, net := range p.bypassNetworks {
-			if net.Contains(ip) {
-				return p.bypass
-			}
-		}
-		for _, bypassIP := range p.bypassIPs {
-			if bypassIP.Equal(ip) {
-				return p.bypass
-			}
-		}
-		return p.def
-	}
-
-	for _, zone := range p.bypassZones {
-		if strings.HasSuffix(host, zone) {
-			return p.bypass
-		}
-		if host == zone[1:] {
-			// For a zone "example.com", we match "example.com"
-			// too.
-			return p.bypass
-		}
-	}
-	for _, bypassHost := range p.bypassHosts {
-		if bypassHost == host {
-			return p.bypass
-		}
-	}
-	return p.def
-}
-
-// AddFromString parses a string that contains comma-separated values
-// specifying hosts that should use the bypass proxy. Each value is either an
-// IP address, a CIDR range, a zone (*.example.com) or a hostname
-// (localhost). A best effort is made to parse the string and errors are
-// ignored.
-func (p *PerHost) AddFromString(s string) {
-	hosts := strings.Split(s, ",")
-	for _, host := range hosts {
-		host = strings.TrimSpace(host)
-		if len(host) == 0 {
-			continue
-		}
-		if strings.Contains(host, "/") {
-			// We assume that it's a CIDR address like 127.0.0.0/8
-			if _, net, err := net.ParseCIDR(host); err == nil {
-				p.AddNetwork(net)
-			}
-			continue
-		}
-		if ip := net.ParseIP(host); ip != nil {
-			p.AddIP(ip)
-			continue
-		}
-		if strings.HasPrefix(host, "*.") {
-			p.AddZone(host[1:])
-			continue
-		}
-		p.AddHost(host)
-	}
-}
-
-// AddIP specifies an IP address that will use the bypass proxy. Note that
-// this will only take effect if a literal IP address is dialed. A connection
-// to a named host will never match an IP.
-func (p *PerHost) AddIP(ip net.IP) {
-	p.bypassIPs = append(p.bypassIPs, ip)
-}
-
-// AddNetwork specifies an IP range that will use the bypass proxy. Note that
-// this will only take effect if a literal IP address is dialed. A connection
-// to a named host will never match.
-func (p *PerHost) AddNetwork(net *net.IPNet) {
-	p.bypassNetworks = append(p.bypassNetworks, net)
-}
-
-// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
-// "example.com" matches "example.com" and all of its subdomains.
-func (p *PerHost) AddZone(zone string) {
-	if strings.HasSuffix(zone, ".") {
-		zone = zone[:len(zone)-1]
-	}
-	if !strings.HasPrefix(zone, ".") {
-		zone = "." + zone
-	}
-	p.bypassZones = append(p.bypassZones, zone)
-}
-
-// AddHost specifies a hostname that will use the bypass proxy.
-func (p *PerHost) AddHost(host string) {
-	if strings.HasSuffix(host, ".") {
-		host = host[:len(host)-1]
-	}
-	p.bypassHosts = append(p.bypassHosts, host)
-}

vendor/golang.org/x/net/proxy/proxy.go

@@ -1,94 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package proxy provides support for a variety of protocols to proxy network
-// data.
-package proxy
-
-import (
-	"errors"
-	"net"
-	"net/url"
-	"os"
-)
-
-// A Dialer is a means to establish a connection.
-type Dialer interface {
-	// Dial connects to the given address via the proxy.
-	Dial(network, addr string) (c net.Conn, err error)
-}
-
-// Auth contains authentication parameters that specific Dialers may require.
-type Auth struct {
-	User, Password string
-}
-
-// FromEnvironment returns the dialer specified by the proxy related variables in
-// the environment.
-func FromEnvironment() Dialer {
-	allProxy := os.Getenv("all_proxy")
-	if len(allProxy) == 0 {
-		return Direct
-	}
-
-	proxyURL, err := url.Parse(allProxy)
-	if err != nil {
-		return Direct
-	}
-	proxy, err := FromURL(proxyURL, Direct)
-	if err != nil {
-		return Direct
-	}
-
-	noProxy := os.Getenv("no_proxy")
-	if len(noProxy) == 0 {
-		return proxy
-	}
-
-	perHost := NewPerHost(proxy, Direct)
-	perHost.AddFromString(noProxy)
-	return perHost
-}
-
-// proxySchemes is a map from URL schemes to a function that creates a Dialer
-// from a URL with such a scheme.
-var proxySchemes map[string]func(*url.URL, Dialer) (Dialer, error)
-
-// RegisterDialerType takes a URL scheme and a function to generate Dialers from
-// a URL with that scheme and a forwarding Dialer. Registered schemes are used
-// by FromURL.
-func RegisterDialerType(scheme string, f func(*url.URL, Dialer) (Dialer, error)) {
-	if proxySchemes == nil {
-		proxySchemes = make(map[string]func(*url.URL, Dialer) (Dialer, error))
-	}
-	proxySchemes[scheme] = f
-}
-
-// FromURL returns a Dialer given a URL specification and an underlying
-// Dialer for it to make network requests.
-func FromURL(u *url.URL, forward Dialer) (Dialer, error) {
-	var auth *Auth
-	if u.User != nil {
-		auth = new(Auth)
-		auth.User = u.User.Username()
-		if p, ok := u.User.Password(); ok {
-			auth.Password = p
-		}
-	}
-
-	switch u.Scheme {
-	case "socks5":
-		return SOCKS5("tcp", u.Host, auth, forward)
-	}
-
-	// If the scheme doesn't match any of the built-in schemes, see if it
-	// was registered by another package.
-	if proxySchemes != nil {
-		if f, ok := proxySchemes[u.Scheme]; ok {
-			return f(u, forward)
-		}
-	}
-
-	return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
-}

vendor/golang.org/x/net/proxy/socks5.go

@@ -1,210 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package proxy
-
-import (
-	"errors"
-	"io"
-	"net"
-	"strconv"
-)
-
-// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
-// with an optional username and password. See RFC 1928.
-func SOCKS5(network, addr string, auth *Auth, forward Dialer) (Dialer, error) {
-	s := &socks5{
-		network: network,
-		addr:    addr,
-		forward: forward,
-	}
-	if auth != nil {
-		s.user = auth.User
-		s.password = auth.Password
-	}
-
-	return s, nil
-}
-
-type socks5 struct {
-	user, password string
-	network, addr  string
-	forward        Dialer
-}
-
-const socks5Version = 5
-
-const (
-	socks5AuthNone     = 0
-	socks5AuthPassword = 2
-)
-
-const socks5Connect = 1
-
-const (
-	socks5IP4    = 1
-	socks5Domain = 3
-	socks5IP6    = 4
-)
-
-var socks5Errors = []string{
-	"",
-	"general failure",
-	"connection forbidden",
-	"network unreachable",
-	"host unreachable",
-	"connection refused",
-	"TTL expired",
-	"command not supported",
-	"address type not supported",
-}
-
-// Dial connects to the address addr on the network net via the SOCKS5 proxy.
-func (s *socks5) Dial(network, addr string) (net.Conn, error) {
-	switch network {
-	case "tcp", "tcp6", "tcp4":
-	default:
-		return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
-	}
-
-	conn, err := s.forward.Dial(s.network, s.addr)
-	if err != nil {
-		return nil, err
-	}
-	closeConn := &conn
-	defer func() {
-		if closeConn != nil {
-			(*closeConn).Close()
-		}
-	}()
-
-	host, portStr, err := net.SplitHostPort(addr)
-	if err != nil {
-		return nil, err
-	}
-
-	port, err := strconv.Atoi(portStr)
-	if err != nil {
-		return nil, errors.New("proxy: failed to parse port number: " + portStr)
-	}
-	if port < 1 || port > 0xffff {
-		return nil, errors.New("proxy: port number out of range: " + portStr)
-	}
-
-	// the size here is just an estimate
-	buf := make([]byte, 0, 6+len(host))
-
-	buf = append(buf, socks5Version)
-	if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
-		buf = append(buf, 2 /* num auth methods */, socks5AuthNone, socks5AuthPassword)
-	} else {
-		buf = append(buf, 1 /* num auth methods */, socks5AuthNone)
-	}
-
-	if _, err := conn.Write(buf); err != nil {
-		return nil, errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-
-	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
-		return nil, errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-	if buf[0] != 5 {
-		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
-	}
-	if buf[1] == 0xff {
-		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
-	}
-
-	if buf[1] == socks5AuthPassword {
-		buf = buf[:0]
-		buf = append(buf, 1 /* password protocol version */)
-		buf = append(buf, uint8(len(s.user)))
-		buf = append(buf, s.user...)
-		buf = append(buf, uint8(len(s.password)))
-		buf = append(buf, s.password...)
-
-		if _, err := conn.Write(buf); err != nil {
-			return nil, errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
-		}
-
-		if _, err := io.ReadFull(conn, buf[:2]); err != nil {
-			return nil, errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-		}
-
-		if buf[1] != 0 {
-			return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
-		}
-	}
-
-	buf = buf[:0]
-	buf = append(buf, socks5Version, socks5Connect, 0 /* reserved */)
-
-	if ip := net.ParseIP(host); ip != nil {
-		if ip4 := ip.To4(); ip4 != nil {
-			buf = append(buf, socks5IP4)
-			ip = ip4
-		} else {
-			buf = append(buf, socks5IP6)
-		}
-		buf = append(buf, ip...)
-	} else {
-		if len(host) > 255 {
-			return nil, errors.New("proxy: destination hostname too long: " + host)
-		}
-		buf = append(buf, socks5Domain)
-		buf = append(buf, byte(len(host)))
-		buf = append(buf, host...)
-	}
-	buf = append(buf, byte(port>>8), byte(port))
-
-	if _, err := conn.Write(buf); err != nil {
-		return nil, errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-
-	if _, err := io.ReadFull(conn, buf[:4]); err != nil {
-		return nil, errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-
-	failure := "unknown error"
-	if int(buf[1]) < len(socks5Errors) {
-		failure = socks5Errors[buf[1]]
-	}
-
-	if len(failure) > 0 {
-		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
-	}
-
-	bytesToDiscard := 0
-	switch buf[3] {
-	case socks5IP4:
-		bytesToDiscard = net.IPv4len
-	case socks5IP6:
-		bytesToDiscard = net.IPv6len
-	case socks5Domain:
-		_, err := io.ReadFull(conn, buf[:1])
-		if err != nil {
-			return nil, errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-		}
-		bytesToDiscard = int(buf[0])
-	default:
-		return nil, errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
-	}
-
-	if cap(buf) < bytesToDiscard {
-		buf = make([]byte, bytesToDiscard)
-	} else {
-		buf = buf[:bytesToDiscard]
-	}
-	if _, err := io.ReadFull(conn, buf); err != nil {
-		return nil, errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-
-	// Also need to discard the port number
-	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
-		return nil, errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
-	}
-
-	closeConn = nil
-	return conn, nil
-}