Port core to the new go-ricochet API
This includes connection management and enough to compile, but doesn't reimplement most of the protocol messages and functionality yet. There are problems noted throughout the code, also.
This commit is contained in:
John Brooks
parent
9ae0eac4f3
commit
0c187e72a0
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@ -0,0 +1,49 @@
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package core
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import (
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"github.com/s-rah/go-ricochet/channels"
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"github.com/s-rah/go-ricochet/connection"
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"log"
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"time"
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)
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type ContactProtocolHandler struct {
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connection.AutoConnectionHandler
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conn *connection.Connection
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contact *Contact
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}
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func NewContactProtocolHandler(contact *Contact, conn *connection.Connection) *ContactProtocolHandler {
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handler := &ContactProtocolHandler{
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conn: conn,
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contact: contact,
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}
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handler.Init(nil, conn.RemoteHostname)
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handler.RegisterChannelHandler("im.ricochet.chat", func() channels.Handler {
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chat := new(channels.ChatChannel)
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chat.Handler = handler
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return chat
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})
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// XXX Somebody needs to be calling Process, nobody is yet, need that rework in contact
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return handler
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}
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// Implement ChatChannelHandler for im.ricochet.chat
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func (handler *ContactProtocolHandler) ChatMessage(messageID uint32, when time.Time, message string) bool {
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// XXX sanity checks, message contents, etc
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log.Printf("chat message: %d %d %v %s", messageID, when, message)
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conversation := handler.contact.Conversation()
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conversation.Receive(uint64(messageID), when.Unix(), message)
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return true
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}
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func (handler *ContactProtocolHandler) ChatMessageAck(messageID uint32) {
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// XXX no success field
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log.Printf("chat ack: %d", messageID)
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conversation := handler.contact.Conversation()
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conversation.UpdateSentStatus(uint64(messageID), true)
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}
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423
core/contact.go
423
core/contact.go
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@ -5,6 +5,7 @@ import (
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"github.com/ricochet-im/ricochet-go/core/utils"
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"github.com/ricochet-im/ricochet-go/rpc"
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protocol "github.com/s-rah/go-ricochet"
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connection "github.com/s-rah/go-ricochet/connection"
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"golang.org/x/net/context"
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"log"
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"strconv"
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@ -29,15 +30,13 @@ type Contact struct {
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events *utils.Publisher
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connEnabled bool
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connection *protocol.OpenConnection
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connChannel chan *protocol.OpenConnection
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connClosedChannel chan struct{}
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connStopped chan struct{}
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connection *connection.Connection
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connChannel chan *connection.Connection
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connEnabledSignal chan bool
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connectionOnce sync.Once
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timeConnected time.Time
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outboundConnAuthKnown bool
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conversation *Conversation
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}
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@ -47,6 +46,8 @@ func ContactFromConfig(core *Ricochet, id int, data ConfigContact, events *utils
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id: id,
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data: data,
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events: events,
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connChannel: make(chan *connection.Connection),
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connEnabledSignal: make(chan bool),
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}
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if id < 0 {
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@ -153,41 +154,31 @@ func (c *Contact) Conversation() *Conversation {
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return c.conversation
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}
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// XXX Thread safety disaster
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func (c *Contact) Connection() *protocol.OpenConnection {
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func (c *Contact) Connection() *connection.Connection {
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c.mutex.Lock()
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defer c.mutex.Unlock()
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return c.connection
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}
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// StartConnection enables inbound and outbound connections for this contact, if other
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// conditions permit them. This function is safe to call repeatedly.
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func (c *Contact) StartConnection() {
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c.mutex.Lock()
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defer c.mutex.Unlock()
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if c.connEnabled {
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return
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}
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c.connectionOnce.Do(func() {
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go c.contactConnection()
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})
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c.connEnabled = true
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c.connChannel = make(chan *protocol.OpenConnection)
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c.connClosedChannel = make(chan struct{})
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c.connStopped = make(chan struct{})
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go c.contactConnection()
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c.connEnabledSignal <- true
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}
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func (c *Contact) StopConnection() {
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c.mutex.Lock()
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if !c.connEnabled {
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c.mutex.Unlock()
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return
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}
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stopped := c.connStopped
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close(c.connChannel)
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c.connChannel = nil
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c.connClosedChannel = nil
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c.connStopped = nil
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c.mutex.Unlock()
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<-stopped
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// Must be running to consume connEnabledSignal
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c.connectionOnce.Do(func() {
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go c.contactConnection()
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})
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c.connEnabled = false
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c.connEnabledSignal <- false
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}
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func (c *Contact) shouldMakeOutboundConnections() bool {
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@ -202,85 +193,149 @@ func (c *Contact) shouldMakeOutboundConnections() bool {
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return c.connEnabled
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}
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// closeUnhandledConnection takes a connection without an active Process routine
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// and ensures that it is fully closed and destroyed. It is safe to call on
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// a connection that has already been closed and on any connection in any
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// state, as long as Process() is not currently running.
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func closeUnhandledConnection(conn *connection.Connection) {
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conn.Conn.Close()
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nullHandler := &connection.AutoConnectionHandler{}
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nullHandler.Init()
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conn.Process(nullHandler)
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}
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// Goroutine to handle the protocol connection for a contact.
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// Responsible for making outbound connections and taking over authenticated
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// inbound connections, running protocol handlers on the active connection, and
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// reacting to connection loss. Nothing else may write Contact.connection.
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//
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// This goroutine is started by the first call to StartConnection or StopConnection
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// and persists for the lifetime of the contact. When connections are stopped, it
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// consumes connChannel and closes all (presumably inbound) connections.
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// XXX Need a hard kill for destroying contacts
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func (c *Contact) contactConnection() {
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// XXX Should the protocol continue handling its own goroutines?
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// I'm thinking the protocol API design I want is:
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// - "handler" assigned per-connection
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// - each inbound listener has its own handler also, assigns for conns
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// - so, non-authed connection has a handler that _can't_ do anything other than auth
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// - inbound contact req connection gets a special handler for that case
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// - authenticated contact conns get handler changed here
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// It's probably more sensible to never break the conn read loop, because of buffering etc
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// So likely we don't want to change that goroutine. Could still use a channel to pass it
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// to handler for parsing, which could let it go on any goroutine we want, if it's desirable
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// to put it on e.g. this routine. Hmm.
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// Signalled when the active connection is closed
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connClosedChannel := make(chan struct{})
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connectionsEnabled := false
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connChannel := c.connChannel
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connClosedChannel := c.connClosedChannel
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stopped := c.connStopped
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connectionLoop:
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for {
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// If there is no active connection, spawn an outbound connector.
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// A successful connection is returned via connChannel; otherwise, it will keep trying.
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if !connectionsEnabled {
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// Reject all connections on connChannel and wait for start signal
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select {
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case conn := <-c.connChannel:
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if conn != nil {
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log.Printf("Discarded connection to %s because connections are disabled", c.Address())
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go closeUnhandledConnection(conn)
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// XXX-protocol doing this here instead of during auth means they'll keep trying endlessly. Doing it in
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// auth means they'll never try again. Both are sometimes wrong. Hmm.
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}
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case enable := <-c.connEnabledSignal:
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if enable {
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log.Printf("Contact %s connections are enabled", c.Address())
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connectionsEnabled = true
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}
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// XXX hard kill
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}
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continue
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}
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// If there is no active connection, spawn an outbound connector. A successful connection
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// is returned via connChannel, and otherwise it will keep trying until cancelled via
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// the context.
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var outboundCtx context.Context
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outboundCancel := func() {}
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if c.connection == nil && c.shouldMakeOutboundConnections() {
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outboundCtx, outboundCancel = context.WithCancel(context.Background())
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go c.connectOutbound(outboundCtx, connChannel)
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go c.connectOutbound(outboundCtx, c.connChannel)
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}
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select {
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case conn, ok := <-connChannel:
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case conn := <-c.connChannel:
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outboundCancel()
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if !ok {
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// Closing connChannel exits this connection routine, for contact
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// deletion, exit, or some other case.
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break connectionLoop
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} else if conn == nil {
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if conn == nil {
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// Signal used to restart outbound connection attempts
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continue
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}
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// Received a new connection. The connection is already authenticated and ready to use.
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// This connection may be inbound or outbound. setConnection will decide whether to
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// replace an existing connection.
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// XXX Tweak setConnection logic if needed
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// Logic when keeping connection, need to make sure protocol is going, etc...
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if err := c.setConnection(conn); err != nil {
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log.Printf("Discarded new contact %s connection: %s", c.Address(), err)
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if !conn.Closed && conn != c.connection {
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conn.Close()
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}
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c.mutex.Lock()
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// Decide whether to keep this connection; if this returns an error, conn is
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// already closed. If there was an existing connection and this returns nil,
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// the old connection is closed but c.connection has not been reset.
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if err := c.considerUsingConnection(conn); err != nil {
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log.Printf("Discarded new contact %s connection: %s", c.data.Hostname, err)
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go closeUnhandledConnection(conn)
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c.mutex.Unlock()
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continue
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}
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replacingConn := c.connection != nil
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c.connection = conn
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if replacingConn {
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// Wait for old handleConnection to return
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c.mutex.Unlock()
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<-connClosedChannel
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c.mutex.Lock()
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}
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go c.handleConnection(conn, connClosedChannel)
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c.onConnectionStateChanged()
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c.mutex.Unlock()
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case <-connClosedChannel:
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outboundCancel()
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c.clearConnection(nil)
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c.mutex.Lock()
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c.connection = nil
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c.onConnectionStateChanged()
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c.mutex.Unlock()
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case enable := <-c.connEnabledSignal:
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outboundCancel()
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if !enable {
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connectionsEnabled = false
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log.Printf("Contact %s connections are disabled", c.Address())
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}
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}
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}
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log.Printf("Exiting contact connection loop for %s", c.Address())
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c.clearConnection(nil)
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close(stopped)
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c.mutex.Lock()
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if c.connection != nil {
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c.connection.Conn.Close()
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c.connection = nil
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c.onConnectionStateChanged()
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c.mutex.Unlock()
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<-connClosedChannel
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} else {
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c.mutex.Unlock()
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}
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}
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// Goroutine to maintain an open contact connection, calls Process and reports when closed.
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func (c *Contact) handleConnection(conn *connection.Connection, closedChannel chan struct{}) {
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// Connection does not outlive this function
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defer func() {
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conn.Conn.Close()
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closedChannel <- struct{}{}
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}()
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log.Printf("Contact connection for %s ready", conn.RemoteHostname)
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handler := NewContactProtocolHandler(c, conn)
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err := conn.Process(handler)
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if err == nil {
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// Somebody called Break?
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err = fmt.Errorf("Connection handler interrupted unexpectedly")
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}
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log.Printf("Contact connection for %s closed: %s", conn.RemoteHostname, err)
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}
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// Attempt an outbound connection to the contact, retrying automatically using OnionConnector.
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// This function _must_ send something to connChannel before returning, unless the context has
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// been cancelled.
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func (c *Contact) connectOutbound(ctx context.Context, connChannel chan *protocol.OpenConnection) {
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func (c *Contact) connectOutbound(ctx context.Context, connChannel chan *connection.Connection) {
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c.mutex.Lock()
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connector := OnionConnector{
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Network: c.core.Network,
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NeverGiveUp: true,
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}
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hostname := c.data.Hostname
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isRequest := c.data.Request.Pending
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c.mutex.Unlock()
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for {
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@ -296,110 +351,131 @@ func (c *Contact) connectOutbound(ctx context.Context, connChannel chan *protoco
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continue
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}
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// XXX-protocol Ideally this should all take place under ctx also; easy option is a goroutine
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// blocked on ctx that kills the connection.
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log.Printf("Successful outbound connection to contact %s", hostname)
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oc, err := protocol.Open(conn, hostname[0:16])
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oc, err := protocol.NegotiateVersionOutbound(conn, hostname[0:16])
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if err != nil {
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log.Printf("Contact connection protocol failure: %s", err)
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if oc != nil {
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oc.Close()
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}
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log.Printf("Outbound connection version negotiation failed: %v", err)
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conn.Close()
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if err := connector.Backoff(ctx); err != nil {
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return
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}
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continue
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} else {
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log.Printf("Protocol connection open: %v", oc)
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// XXX Protocol API needs to be reworked; see notes in
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// contactConnection. Ideally we should authenticate here and
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// pass the conneciton back, but for now this can do nothing:
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// the connection will either succeed and come in via the
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// protocol handler, or will be closed and signalled via
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// OnConnectionClosed. Alternatively, it will break because this
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// is fragile and dumb.
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// XXX BUG: This means no backoff for authentication failure
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handler := &ProtocolConnection{
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Core: c.core,
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Conn: oc,
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Contact: c,
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MyHostname: c.core.Identity.Address()[9:],
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PrivateKey: c.core.Identity.PrivateKey(),
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}
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go oc.Process(handler)
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log.Printf("Outbound connection negotiated version; authenticating")
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privateKey := c.core.Identity.PrivateKey()
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known, err := connection.HandleOutboundConnection(oc).ProcessAuthAsClient(&privateKey)
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if err != nil {
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log.Printf("Outbound connection authentication failed: %v", err)
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closeUnhandledConnection(oc)
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if err := connector.Backoff(ctx); err != nil {
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return
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}
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continue
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}
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// XXX-protocol Also move the "this is an outbound request" logic here to kill the silly flag and
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// move those out of a scary mutexed path? XXX
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if !known && !isRequest {
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log.Printf("Outbound connection to contact says we are not a known contact for %v", c)
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// XXX Should move to rejected status, stop attempting connections.
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closeUnhandledConnection(oc)
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if err := connector.Backoff(ctx); err != nil {
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return
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}
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continue
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} else if known && isRequest {
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log.Printf("Contact request implicitly accepted for outbound connection by contact %v", c)
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c.UpdateContactRequest("Accepted")
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}
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log.Printf("Assigning outbound connection to contact")
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c.AssignConnection(oc)
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break
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}
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}
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func (c *Contact) setConnection(conn *protocol.OpenConnection) error {
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if conn.Client {
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log.Printf("Contact %s has a new outbound connection", c.Address())
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// considerUsingConnection takes a newly established connection and decides whether
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// the new connection is valid and acceptable, and whether to replace or keep an
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// existing connection. To handle race cases when peers are connecting to eachother,
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// a particular set of rules is followed for replacing an existing connection.
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//
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// considerUsingConnection returns nil if the new connection is valid and should be
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// used. If this function returns nil, the existing connection has been closed (but
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// c.connection is unmodified, and the process routine may still be executing). If
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// this function returns an error, conn has been closed.
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//
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// Assumes that c.mutex is held.
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func (c *Contact) considerUsingConnection(conn *connection.Connection) error {
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killConn := conn
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defer func() {
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if killConn != nil {
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killConn.Conn.Close()
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}
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}()
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if conn.IsInbound {
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log.Printf("Contact %s has a new inbound connection", c.data.Hostname)
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} else {
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log.Printf("Contact %s has a new inbound connection", c.Address())
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log.Printf("Contact %s has a new outbound connection", c.data.Hostname)
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}
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c.mutex.Lock()
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if conn == c.connection {
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c.mutex.Unlock()
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return fmt.Errorf("Duplicate assignment of connection %v to contact %v", conn, c)
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}
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if !conn.IsAuthed || conn.Closed {
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c.mutex.Unlock()
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conn.Close()
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return fmt.Errorf("Connection %v is not in a valid state to assign to contact %v", conn, c)
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if !conn.Authentication["im.ricochet.auth.hidden-service"] {
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return fmt.Errorf("Connection %v is not authenticated", conn)
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}
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if c.data.Hostname[0:16] != conn.OtherHostname {
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c.mutex.Unlock()
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conn.Close()
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return fmt.Errorf("Connection hostname %s doesn't match contact hostname %s when assigning connection", conn.OtherHostname, c.data.Hostname[0:16])
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if c.data.Hostname[0:16] != conn.RemoteHostname {
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return fmt.Errorf("Connection hostname %s doesn't match contact hostname %s when assigning connection", conn.RemoteHostname, c.data.Hostname[0:16])
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}
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|
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if conn.Client && !c.outboundConnAuthKnown && !c.data.Request.Pending {
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log.Printf("Outbound connection to contact says we are not a known contact for %v", c)
|
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// XXX Should move to rejected status, stop attempting connections.
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c.mutex.Unlock()
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conn.Close()
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return fmt.Errorf("Outbound connection says we are not a known contact")
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}
|
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|
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if c.connection != nil {
|
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if c.shouldReplaceConnection(conn) {
|
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// XXX Signal state change for connection loss?
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c.connection.Close()
|
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c.connection = nil
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} else {
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c.mutex.Unlock()
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conn.Close()
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if c.connection != nil && !c.shouldReplaceConnection(conn) {
|
||||
return fmt.Errorf("Using existing connection")
|
||||
}
|
||||
}
|
||||
|
||||
// If this connection is inbound and there's an outbound attempt, keep this
|
||||
// connection and cancel outbound if we haven't sent authentication yet, or
|
||||
// if the outbound connection will lose the fallback comparison above.
|
||||
// XXX implement this
|
||||
// XXX implement this; currently outbound is always cancelled when an inbound
|
||||
// connection succeeds.
|
||||
|
||||
c.connection = conn
|
||||
log.Printf("Assigned connection %v to contact %v", c.connection, c)
|
||||
// We will keep conn, close c.connection instead if there was one
|
||||
killConn = c.connection
|
||||
return nil
|
||||
}
|
||||
|
||||
// onConnectionStateChanged is called by the connection loop when the c.connection
|
||||
// is changed, which can be a transition to online or offline or a replacement.
|
||||
// Assumes c.mutex is held.
|
||||
func (c *Contact) onConnectionStateChanged() {
|
||||
if c.connection != nil {
|
||||
if c.data.Request.Pending {
|
||||
if conn.Client && !c.outboundConnAuthKnown {
|
||||
if !c.connection.IsInbound {
|
||||
// Outbound connection for contact request; send request message
|
||||
// XXX hardcoded channel ID
|
||||
log.Printf("Sending outbound contact request to %v", c)
|
||||
conn.SendContactRequest(5, c.data.Request.MyNickname, c.data.Request.Message)
|
||||
// XXX-protocol ooooohhhhh no you don't. Cannot interact w/ protocol here, because process may
|
||||
// not have started yet. Maybe this one needs to go w/ outbound auth in pre-connection also
|
||||
// honestly, it would not be a bad thing to have outbound unaccepted requests _not_ be
|
||||
// considered active connections, as long as they get handled properly.
|
||||
// c.connection.SendContactRequest(5, c.data.Request.MyNickname, c.data.Request.Message)
|
||||
} else {
|
||||
// Inbound connection or outbound connection with a positive
|
||||
// 'isKnownContact' response implicitly accepts the contact request
|
||||
// and can continue as a contact
|
||||
// Inbound connection implicitly accepts the contact request and can continue as a contact
|
||||
log.Printf("Contact request implicitly accepted by contact %v", c)
|
||||
c.updateContactRequest("Accepted")
|
||||
}
|
||||
} else {
|
||||
c.status = ricochet.Contact_ONLINE
|
||||
}
|
||||
} else {
|
||||
if c.status == ricochet.Contact_ONLINE {
|
||||
c.status = ricochet.Contact_OFFLINE
|
||||
}
|
||||
}
|
||||
|
||||
// Update LastConnected time
|
||||
c.timeConnected = time.Now()
|
||||
|
|
@ -409,8 +485,8 @@ func (c *Contact) setConnection(conn *protocol.OpenConnection) error {
|
|||
config.Contacts[strconv.Itoa(c.id)] = c.data
|
||||
config.Save()
|
||||
|
||||
// _really_ assumes c.mutex was held
|
||||
c.mutex.Unlock()
|
||||
|
||||
event := ricochet.ContactEvent{
|
||||
Type: ricochet.ContactEvent_UPDATE,
|
||||
Subject: &ricochet.ContactEvent_Contact{
|
||||
|
|
@ -419,59 +495,24 @@ func (c *Contact) setConnection(conn *protocol.OpenConnection) error {
|
|||
}
|
||||
c.events.Publish(event)
|
||||
|
||||
if c.connection != nil {
|
||||
// Send any queued messages
|
||||
sent := c.Conversation().SendQueuedMessages()
|
||||
if sent > 0 {
|
||||
log.Printf("Sent %d queued messages to contact", sent)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Close and clear state related to the active contact connection.
|
||||
// If ifConn is non-nil, the active connection is only cleared if
|
||||
// it is the same as ifConn. Returns true if cleared.
|
||||
func (c *Contact) clearConnection(ifConn *protocol.OpenConnection) bool {
|
||||
c.mutex.Lock()
|
||||
if c.connection == nil || (ifConn != nil && c.connection != ifConn) {
|
||||
c.mutex.Unlock()
|
||||
return false
|
||||
}
|
||||
|
||||
conn := c.connection
|
||||
c.connection = nil
|
||||
c.status = ricochet.Contact_OFFLINE
|
||||
|
||||
// XXX eww, and also potentially deadlockable?
|
||||
config := c.core.Config.OpenWrite()
|
||||
c.data.LastConnected = time.Now().Format(time.RFC3339)
|
||||
config.Contacts[strconv.Itoa(c.id)] = c.data
|
||||
config.Save()
|
||||
c.mutex.Unlock()
|
||||
|
||||
if conn != nil && !conn.Closed {
|
||||
conn.Close()
|
||||
}
|
||||
|
||||
event := ricochet.ContactEvent{
|
||||
Type: ricochet.ContactEvent_UPDATE,
|
||||
Subject: &ricochet.ContactEvent_Contact{
|
||||
Contact: c.Data(),
|
||||
},
|
||||
}
|
||||
c.events.Publish(event)
|
||||
return true
|
||||
}
|
||||
|
||||
// Decide whether to replace the existing connection with conn.
|
||||
// Assumes mutex is held.
|
||||
func (c *Contact) shouldReplaceConnection(conn *protocol.OpenConnection) bool {
|
||||
func (c *Contact) shouldReplaceConnection(conn *connection.Connection) bool {
|
||||
myHostname, _ := PlainHostFromAddress(c.core.Identity.Address())
|
||||
if c.connection == nil {
|
||||
return true
|
||||
} else if c.connection.Closed {
|
||||
log.Printf("Replacing dead connection %v for contact %v", c.connection, c)
|
||||
return true
|
||||
} else if c.connection.Client == conn.Client {
|
||||
} else if c.connection.IsInbound == conn.IsInbound {
|
||||
// If the existing connection is in the same direction, always use the new one
|
||||
log.Printf("Replacing existing same-direction connection %v with new connection %v for contact %v", c.connection, conn, c)
|
||||
return true
|
||||
|
|
@ -479,7 +520,7 @@ func (c *Contact) shouldReplaceConnection(conn *protocol.OpenConnection) bool {
|
|||
// If the existing connection is more than 30 seconds old, use the new one
|
||||
log.Printf("Replacing existing %v old connection %v with new connection %v for contact %v", time.Since(c.timeConnected), c.connection, conn, c)
|
||||
return true
|
||||
} else if preferOutbound := conn.MyHostname < conn.OtherHostname; preferOutbound == conn.Client {
|
||||
} else if preferOutbound := myHostname < conn.RemoteHostname; preferOutbound != conn.IsInbound {
|
||||
// Fall back to string comparison of hostnames for a stable resolution
|
||||
// New connection wins
|
||||
log.Printf("Replacing existing connection %v with new connection %v for contact %v according to fallback order", c.connection, conn, c)
|
||||
|
|
@ -552,29 +593,13 @@ func (c *Contact) updateContactRequest(status string) bool {
|
|||
return re
|
||||
}
|
||||
|
||||
// XXX also will go away during protocol API rework
|
||||
func (c *Contact) OnConnectionAuthenticated(conn *protocol.OpenConnection, knownContact bool) {
|
||||
c.mutex.Lock()
|
||||
if c.connChannel == nil {
|
||||
log.Printf("Inbound connection from contact, but connections are not enabled for contact %v", c)
|
||||
c.mutex.Unlock()
|
||||
conn.Close()
|
||||
}
|
||||
// XXX this is ugly
|
||||
if conn.Client {
|
||||
c.outboundConnAuthKnown = knownContact
|
||||
}
|
||||
c.connChannel <- conn
|
||||
c.mutex.Unlock()
|
||||
}
|
||||
// AssignConnection takes new connections, inbound or outbound, to this contact, and
|
||||
// asynchronously decides whether to keep or close them.
|
||||
func (c *Contact) AssignConnection(conn *connection.Connection) {
|
||||
c.connectionOnce.Do(func() {
|
||||
go c.contactConnection()
|
||||
})
|
||||
|
||||
// XXX rework connection close to have a proper notification instead of this "find contact" mess.
|
||||
func (c *Contact) OnConnectionClosed(conn *protocol.OpenConnection) {
|
||||
c.mutex.Lock()
|
||||
if c.connection != conn || c.connClosedChannel == nil {
|
||||
c.mutex.Unlock()
|
||||
return
|
||||
}
|
||||
c.connClosedChannel <- struct{}{}
|
||||
c.mutex.Unlock()
|
||||
// If connections are disabled, this connection will be closed by contactConnection
|
||||
c.connChannel <- conn
|
||||
}
|
||||
|
|
|
|||
|
|
@ -208,6 +208,9 @@ func (this *ContactList) RemoveContact(contact *Contact) error {
|
|||
return errors.New("Not in contact list")
|
||||
}
|
||||
|
||||
// XXX How do we safely make sure that the contact has stopped everything, and that
|
||||
// nobody is going to block on it or keep referencing it..? This is insufficient, it
|
||||
// leaves a goroutine up among other things.
|
||||
contact.StopConnection()
|
||||
|
||||
config := this.core.Config.OpenWrite()
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@ import (
|
|||
"errors"
|
||||
"github.com/ricochet-im/ricochet-go/core/utils"
|
||||
"github.com/ricochet-im/ricochet-go/rpc"
|
||||
protocol "github.com/s-rah/go-ricochet"
|
||||
connection "github.com/s-rah/go-ricochet/connection"
|
||||
"log"
|
||||
"math/rand"
|
||||
"sync"
|
||||
|
|
@ -182,10 +182,13 @@ func (c *Conversation) SendQueuedMessages() int {
|
|||
return sent
|
||||
}
|
||||
|
||||
func sendMessageToConnection(conn *protocol.OpenConnection, message *ricochet.Message) {
|
||||
func sendMessageToConnection(conn *connection.Connection, message *ricochet.Message) {
|
||||
// XXX
|
||||
panic("sendMessageToConnection needs implementing for new protocol API")
|
||||
/*
|
||||
// XXX hardcoded channel IDs, also channel IDs shouldn't be exposed
|
||||
channelId := int32(7)
|
||||
if !conn.Client {
|
||||
if conn.IsInbound {
|
||||
channelId++
|
||||
}
|
||||
// XXX no error handling
|
||||
|
|
@ -195,6 +198,7 @@ func sendMessageToConnection(conn *protocol.OpenConnection, message *ricochet.Me
|
|||
|
||||
// XXX no message IDs
|
||||
conn.SendMessage(channelId, message.Text)
|
||||
*/
|
||||
}
|
||||
|
||||
// XXX This is inefficient -- it'll usually only be marking the last message
|
||||
|
|
|
|||
|
|
@ -6,8 +6,10 @@ import (
|
|||
"errors"
|
||||
"github.com/ricochet-im/ricochet-go/core/utils"
|
||||
protocol "github.com/s-rah/go-ricochet"
|
||||
connection "github.com/s-rah/go-ricochet/connection"
|
||||
"github.com/yawning/bulb/utils/pkcs1"
|
||||
"log"
|
||||
"net"
|
||||
"sync"
|
||||
)
|
||||
|
||||
|
|
@ -103,34 +105,6 @@ func (me *Identity) setPrivateKey(key *rsa.PrivateKey) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
type identityService struct {
|
||||
Identity *Identity
|
||||
MyHostname string
|
||||
}
|
||||
|
||||
func (is *identityService) OnNewConnection(oc *protocol.OpenConnection) {
|
||||
log.Printf("Inbound connection accepted")
|
||||
oc.MyHostname = is.MyHostname
|
||||
// XXX Should have pre-auth handling, timeouts
|
||||
identity := is.Identity
|
||||
handler := &ProtocolConnection{
|
||||
Core: identity.core,
|
||||
Conn: oc,
|
||||
GetContactByHostname: func(hostname string) *Contact {
|
||||
address, ok := AddressFromPlainHost(hostname)
|
||||
if !ok {
|
||||
return nil
|
||||
}
|
||||
return identity.ContactList().ContactByAddress(address)
|
||||
},
|
||||
}
|
||||
go oc.Process(handler)
|
||||
}
|
||||
|
||||
func (is *identityService) OnFailedConnection(err error) {
|
||||
log.Printf("Inbound connection failed: %v", err)
|
||||
}
|
||||
|
||||
// BUG(special): No error handling for failures under publishService
|
||||
func (me *Identity) publishService(key *rsa.PrivateKey) {
|
||||
// This call will block until a control connection is available and the
|
||||
|
|
@ -160,17 +134,72 @@ func (me *Identity) publishService(key *rsa.PrivateKey) {
|
|||
}
|
||||
|
||||
log.Printf("Identity service published, accepting connections")
|
||||
is := &identityService{
|
||||
Identity: me,
|
||||
MyHostname: me.Address()[9:],
|
||||
}
|
||||
|
||||
err = protocol.Serve(listener, is)
|
||||
for {
|
||||
conn, err := listener.Accept()
|
||||
if err != nil {
|
||||
log.Printf("Identity listener failed: %v", err)
|
||||
// XXX handle
|
||||
return
|
||||
}
|
||||
|
||||
// Handle connection in a separate goroutine and continue listening
|
||||
go me.handleInboundConnection(conn)
|
||||
}
|
||||
}
|
||||
|
||||
func (me *Identity) handleInboundConnection(conn net.Conn) error {
|
||||
defer func() {
|
||||
// Close conn on return unless explicitly cleared
|
||||
if conn != nil {
|
||||
conn.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
contactByHostname := func(hostname string) (*Contact, error) {
|
||||
address, ok := AddressFromPlainHost(hostname)
|
||||
if !ok {
|
||||
// This would be a bug
|
||||
return nil, errors.New("invalid authenticated hostname")
|
||||
}
|
||||
return me.contactList.ContactByAddress(address), nil
|
||||
}
|
||||
lookupContactAuth := func(hostname string, publicKey rsa.PublicKey) (bool, bool) {
|
||||
contact, err := contactByHostname(hostname)
|
||||
if err != nil {
|
||||
return false, false
|
||||
}
|
||||
// allowed, known
|
||||
return true, contact != nil
|
||||
}
|
||||
|
||||
rc, err := protocol.NegotiateVersionInbound(conn)
|
||||
if err != nil {
|
||||
log.Printf("Inbound connection failed: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
authHandler := connection.HandleInboundConnection(rc)
|
||||
err = authHandler.ProcessAuthAsServer(me.privateKey, lookupContactAuth)
|
||||
if err != nil {
|
||||
log.Printf("Inbound connection auth failed: %v", err)
|
||||
return err
|
||||
}
|
||||
contact, err := contactByHostname(rc.RemoteHostname)
|
||||
if err != nil {
|
||||
log.Printf("Inbound connection lookup failed: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
if contact != nil {
|
||||
// Known contact, pass the new connection to Contact
|
||||
contact.AssignConnection(rc)
|
||||
conn = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
// XXX-protocol Unknown contact, should pass to handler for contact requests
|
||||
log.Printf("Inbound connection is a contact request, but that's not implemented yet")
|
||||
return errors.New("inbound contact request connections aren't implemented")
|
||||
}
|
||||
|
||||
func (me *Identity) Address() string {
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ package core
|
|||
import (
|
||||
"errors"
|
||||
"github.com/ricochet-im/ricochet-go/rpc"
|
||||
protocol "github.com/s-rah/go-ricochet"
|
||||
connection "github.com/s-rah/go-ricochet/connection"
|
||||
"log"
|
||||
"sync"
|
||||
"time"
|
||||
|
|
@ -13,7 +13,7 @@ type InboundContactRequest struct {
|
|||
core *Ricochet
|
||||
mutex sync.Mutex
|
||||
data ricochet.ContactRequest
|
||||
conn *protocol.OpenConnection
|
||||
conn *connection.Connection
|
||||
channelID int32
|
||||
Address string
|
||||
|
||||
|
|
@ -41,14 +41,14 @@ func CreateInboundContactRequest(core *Ricochet, address, nickname, message stri
|
|||
return cr
|
||||
}
|
||||
|
||||
// XXX There should be stricter management & a timeout for this connection
|
||||
func (cr *InboundContactRequest) SetConnection(conn *protocol.OpenConnection, channelID int32) {
|
||||
// XXX-protocol There should be stricter management & a timeout for this connection
|
||||
func (cr *InboundContactRequest) SetConnection(conn *connection.Connection, channelID int32) {
|
||||
cr.mutex.Lock()
|
||||
defer cr.mutex.Unlock()
|
||||
|
||||
if cr.conn != nil && cr.conn != conn {
|
||||
log.Printf("Replacing connection on an inbound contact request")
|
||||
cr.conn.Close()
|
||||
cr.conn.Conn.Close()
|
||||
}
|
||||
cr.conn = conn
|
||||
cr.channelID = channelID
|
||||
|
|
@ -56,7 +56,7 @@ func (cr *InboundContactRequest) SetConnection(conn *protocol.OpenConnection, ch
|
|||
|
||||
func (cr *InboundContactRequest) CloseConnection() {
|
||||
if cr.conn != nil {
|
||||
cr.conn.Close()
|
||||
cr.conn.Conn.Close()
|
||||
cr.conn = nil
|
||||
}
|
||||
}
|
||||
|
|
@ -131,10 +131,10 @@ func (cr *InboundContactRequest) AcceptWithContact(contact *Contact) error {
|
|||
cr.core.Identity.ContactList().RemoveInboundContactRequest(cr)
|
||||
|
||||
// Pass the open connection to the new contact
|
||||
if cr.conn != nil && !cr.conn.Closed {
|
||||
cr.conn.AckContactRequest(cr.channelID, "Accepted")
|
||||
cr.conn.CloseChannel(cr.channelID)
|
||||
contact.OnConnectionAuthenticated(cr.conn, true)
|
||||
if cr.conn != nil {
|
||||
// XXX-protocol cr.conn.AckContactRequest(cr.channelID, "Accepted")
|
||||
// XXX-protocol cr.conn.CloseChannel(cr.channelID)
|
||||
contact.AssignConnection(cr.conn)
|
||||
cr.conn = nil
|
||||
}
|
||||
|
||||
|
|
@ -157,10 +157,10 @@ func (cr *InboundContactRequest) Reject() {
|
|||
cr.StatusChanged(cr)
|
||||
}
|
||||
|
||||
if cr.conn != nil && !cr.conn.Closed {
|
||||
cr.conn.AckContactRequest(cr.channelID, "Rejected")
|
||||
cr.conn.CloseChannel(cr.channelID)
|
||||
cr.conn.Close()
|
||||
if cr.conn != nil {
|
||||
// XXX-protocol cr.conn.AckContactRequest(cr.channelID, "Rejected")
|
||||
// XXX-protocol cr.conn.CloseChannel(cr.channelID)
|
||||
cr.conn.Conn.Close()
|
||||
cr.conn = nil
|
||||
|
||||
// The request can be removed once a protocol response is sent
|
||||
|
|
|
|||
231
core/protocol.go
231
core/protocol.go
|
|
@ -1,231 +0,0 @@
|
|||
package core
|
||||
|
||||
import (
|
||||
"crypto/rsa"
|
||||
"encoding/asn1"
|
||||
protocol "github.com/s-rah/go-ricochet"
|
||||
"log"
|
||||
"time"
|
||||
)
|
||||
|
||||
type ProtocolConnection struct {
|
||||
Core *Ricochet
|
||||
|
||||
Conn *protocol.OpenConnection
|
||||
Contact *Contact
|
||||
|
||||
// Client-side authentication
|
||||
MyHostname string
|
||||
PrivateKey rsa.PrivateKey
|
||||
|
||||
// Service-side authentication
|
||||
GetContactByHostname func(hostname string) *Contact
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnReady(oc *protocol.OpenConnection) {
|
||||
if pc.Conn != nil && pc.Conn != oc {
|
||||
log.Panicf("ProtocolConnection is already assigned connection %v, but OnReady called for connection %v", pc.Conn, oc)
|
||||
}
|
||||
|
||||
pc.Conn = oc
|
||||
|
||||
if pc.Conn.Client {
|
||||
log.Printf("Connected to %s", pc.Conn.OtherHostname)
|
||||
pc.Conn.MyHostname = pc.MyHostname
|
||||
pc.Conn.IsAuthed = true // Outbound connections are authenticated
|
||||
pc.Conn.Authenticate(1)
|
||||
}
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnDisconnect() {
|
||||
log.Printf("protocol: OnDisconnect: %v", pc)
|
||||
if pc.Contact != nil {
|
||||
pc.Contact.OnConnectionClosed(pc.Conn)
|
||||
}
|
||||
}
|
||||
|
||||
// Authentication Management
|
||||
func (pc *ProtocolConnection) OnAuthenticationRequest(channelID int32, clientCookie [16]byte) {
|
||||
log.Printf("protocol: OnAuthenticationRequest")
|
||||
pc.Conn.ConfirmAuthChannel(channelID, clientCookie)
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnAuthenticationChallenge(channelID int32, serverCookie [16]byte) {
|
||||
log.Printf("protocol: OnAuthenticationChallenge")
|
||||
publicKeyBytes, _ := asn1.Marshal(pc.PrivateKey.PublicKey)
|
||||
pc.Conn.SendProof(1, serverCookie, publicKeyBytes, &pc.PrivateKey)
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnAuthenticationProof(channelID int32, publicKey []byte, signature []byte) {
|
||||
result := pc.Conn.ValidateProof(channelID, publicKey, signature)
|
||||
|
||||
if result {
|
||||
if len(pc.Conn.OtherHostname) != 16 {
|
||||
log.Printf("protocol: Invalid format for hostname '%s' in authentication proof", pc.Conn.OtherHostname)
|
||||
result = false
|
||||
} else {
|
||||
pc.Contact = pc.GetContactByHostname(pc.Conn.OtherHostname)
|
||||
}
|
||||
}
|
||||
isKnownContact := (pc.Contact != nil)
|
||||
|
||||
pc.Conn.SendAuthenticationResult(channelID, result, isKnownContact)
|
||||
pc.Conn.IsAuthed = result
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
|
||||
log.Printf("protocol: OnAuthenticationProof, result: %v, contact: %v", result, pc.Contact)
|
||||
if result && pc.Contact != nil {
|
||||
pc.Contact.OnConnectionAuthenticated(pc.Conn, true)
|
||||
}
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnAuthenticationResult(channelID int32, result bool, isKnownContact bool) {
|
||||
pc.Conn.IsAuthed = result
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
|
||||
if !result {
|
||||
log.Printf("protocol: Outbound connection authentication to %s failed", pc.Conn.OtherHostname)
|
||||
pc.Conn.Close()
|
||||
return
|
||||
}
|
||||
|
||||
log.Printf("protocol: Outbound connection to %s authenticated", pc.Conn.OtherHostname)
|
||||
if pc.Contact != nil {
|
||||
pc.Contact.OnConnectionAuthenticated(pc.Conn, isKnownContact)
|
||||
}
|
||||
}
|
||||
|
||||
// Contact Management
|
||||
func (pc *ProtocolConnection) OnContactRequest(channelID int32, nick string, message string) {
|
||||
if pc.Conn.Client || !pc.Conn.IsAuthed || pc.Contact != nil {
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
return
|
||||
}
|
||||
|
||||
address, ok := AddressFromPlainHost(pc.Conn.OtherHostname)
|
||||
if !ok {
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
return
|
||||
}
|
||||
if len(nick) > 0 && !IsNicknameAcceptable(nick) {
|
||||
log.Printf("protocol: Stripping unacceptable nickname from inbound request; encoded: %x", []byte(nick))
|
||||
nick = ""
|
||||
}
|
||||
if len(message) > 0 && !IsMessageAcceptable(message) {
|
||||
log.Printf("protocol: Stripping unacceptable message from inbound request; len: %d, encoded: %x", len(message), []byte(message))
|
||||
message = ""
|
||||
}
|
||||
|
||||
contactList := pc.Core.Identity.ContactList()
|
||||
request, contact := contactList.AddOrUpdateInboundContactRequest(address, nick, message)
|
||||
|
||||
if contact != nil {
|
||||
// Accepted immediately
|
||||
pc.Conn.AckContactRequestOnResponse(channelID, "Accepted")
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
contact.OnConnectionAuthenticated(pc.Conn, true)
|
||||
} else if request != nil && !request.IsRejected() {
|
||||
// Pending
|
||||
pc.Conn.AckContactRequestOnResponse(channelID, "Pending")
|
||||
request.SetConnection(pc.Conn, channelID)
|
||||
} else {
|
||||
// Rejected
|
||||
pc.Conn.AckContactRequestOnResponse(channelID, "Rejected")
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
pc.Conn.Close()
|
||||
if request != nil {
|
||||
contactList.RemoveInboundContactRequest(request)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnContactRequestAck(channelID int32, status string) {
|
||||
if !pc.Conn.Client || pc.Contact == nil {
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
return
|
||||
}
|
||||
|
||||
if !pc.Contact.UpdateContactRequest(status) {
|
||||
pc.Conn.CloseChannel(channelID)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) IsKnownContact(hostname string) bool {
|
||||
// All uses of this are for authenticated contacts, so it's sufficient to check pc.Contact
|
||||
if pc.Contact != nil {
|
||||
contactHostname, _ := PlainHostFromOnion(pc.Contact.Hostname())
|
||||
if hostname != contactHostname {
|
||||
log.Panicf("IsKnownContact called for unexpected hostname '%s'", hostname)
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Managing Channels
|
||||
func (pc *ProtocolConnection) OnOpenChannelRequest(channelID int32, channelType string) {
|
||||
log.Printf("open channel request: %v %v", channelID, channelType)
|
||||
pc.Conn.AckOpenChannel(channelID, channelType)
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnOpenChannelRequestSuccess(channelID int32) {
|
||||
log.Printf("open channel request success: %v", channelID)
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnChannelClosed(channelID int32) {
|
||||
log.Printf("channel closed: %v", channelID)
|
||||
}
|
||||
|
||||
// Chat Messages
|
||||
// XXX messageID should be (at least) uint32
|
||||
func (pc *ProtocolConnection) OnChatMessage(channelID int32, messageID int32, message string) {
|
||||
// XXX no time delta?
|
||||
// XXX sanity checks, message contents, etc
|
||||
log.Printf("chat message: %d %d %s", channelID, messageID, message)
|
||||
|
||||
// XXX error case
|
||||
if pc.Contact == nil {
|
||||
pc.Conn.Close()
|
||||
}
|
||||
|
||||
// XXX cache?
|
||||
conversation := pc.Contact.Conversation()
|
||||
conversation.Receive(uint64(messageID), time.Now().Unix(), message)
|
||||
|
||||
pc.Conn.AckChatMessage(channelID, messageID)
|
||||
}
|
||||
|
||||
func (pc *ProtocolConnection) OnChatMessageAck(channelID int32, messageID int32) {
|
||||
// XXX no success
|
||||
log.Printf("chat ack: %d %d", channelID, messageID)
|
||||
|
||||
// XXX error case
|
||||
if pc.Contact == nil {
|
||||
pc.Conn.Close()
|
||||
}
|
||||
|
||||
conversation := pc.Contact.Conversation()
|
||||
conversation.UpdateSentStatus(uint64(messageID), true)
|
||||
}
|
||||
|
||||
// Handle Errors
|
||||
func (pc *ProtocolConnection) OnFailedChannelOpen(channelID int32, errorType string) {
|
||||
log.Printf("failed channel open: %d %s", channelID, errorType)
|
||||
pc.Conn.UnsetChannel(channelID)
|
||||
}
|
||||
func (pc *ProtocolConnection) OnGenericError(channelID int32) {
|
||||
pc.Conn.RejectOpenChannel(channelID, "GenericError")
|
||||
}
|
||||
func (pc *ProtocolConnection) OnUnknownTypeError(channelID int32) {
|
||||
pc.Conn.RejectOpenChannel(channelID, "UnknownTypeError")
|
||||
}
|
||||
func (pc *ProtocolConnection) OnUnauthorizedError(channelID int32) {
|
||||
pc.Conn.RejectOpenChannel(channelID, "UnauthorizedError")
|
||||
}
|
||||
func (pc *ProtocolConnection) OnBadUsageError(channelID int32) {
|
||||
pc.Conn.RejectOpenChannel(channelID, "BadUsageError")
|
||||
}
|
||||
func (pc *ProtocolConnection) OnFailedError(channelID int32) {
|
||||
pc.Conn.RejectOpenChannel(channelID, "FailedError")
|
||||
}
|
||||
Loading…
Reference in New Issue