ricochet-go/ricochet-cli/client.go

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package main
import (
"fmt"
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"github.com/ricochet-im/ricochet-go/rpc"
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"golang.org/x/net/context"
"log"
)
type Client struct {
Backend ricochet.RicochetCoreClient
ServerStatus ricochet.ServerStatusReply
Identity ricochet.Identity
NetworkStatus ricochet.NetworkStatus
Contacts *ContactList
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monitorsChannel chan interface{}
blockChannel chan struct{}
unblockChannel chan struct{}
populatedChannel chan struct{}
populatedNetwork bool
populatedContacts bool
populatedConversations bool
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}
// XXX need to handle backend connection loss/reconnection..
func (c *Client) Initialize() error {
c.Contacts = NewContactList(c)
c.monitorsChannel = make(chan interface{}, 10)
c.blockChannel = make(chan struct{})
c.unblockChannel = make(chan struct{})
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c.populatedChannel = make(chan struct{})
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// Query server status and version
status, err := c.Backend.GetServerStatus(context.Background(), &ricochet.ServerStatusRequest{
RpcVersion: 1,
})
if err != nil {
return err
}
c.ServerStatus = *status
if status.RpcVersion != 1 {
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return fmt.Errorf("unsupported backend RPC version %d", status.RpcVersion)
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}
// Query identity
identity, err := c.Backend.GetIdentity(context.Background(), &ricochet.IdentityRequest{})
if err != nil {
return err
}
c.Identity = *identity
// Spawn routines to query and monitor state changes
go c.monitorNetwork()
go c.monitorContacts()
// Conversation monitor isn't started until contacts are populated
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// Spawn routine to handle all events
go c.Run()
// Block until all state is populated
<-c.populatedChannel
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return nil
}
func (c *Client) Run() {
for {
select {
case v := <-c.monitorsChannel:
switch event := v.(type) {
case *ricochet.NetworkStatus:
c.onNetworkStatus(event)
case *ricochet.ContactEvent:
c.onContactEvent(event)
case *ricochet.ConversationEvent:
c.onConversationEvent(event)
default:
log.Panicf("Unknown event type on monitor channel: %v", event)
}
case <-c.blockChannel:
<-c.unblockChannel
}
}
}
func (c *Client) Block() {
c.blockChannel <- struct{}{}
}
func (c *Client) Unblock() {
c.unblockChannel <- struct{}{}
}
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func (c *Client) IsInitialized() bool {
return c.populatedChannel == nil
}
func (c *Client) checkIfPopulated() {
if c.populatedChannel != nil && c.populatedContacts &&
c.populatedConversations && c.populatedNetwork {
close(c.populatedChannel)
c.populatedChannel = nil
}
}
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func (c *Client) monitorNetwork() {
stream, err := c.Backend.MonitorNetwork(context.Background(), &ricochet.MonitorNetworkRequest{})
if err != nil {
log.Printf("Initializing network status monitor failed: %v", err)
// XXX handle
return
}
for {
status, err := stream.Recv()
if err != nil {
log.Printf("Network status monitor error: %v", err)
// XXX handle
break
}
c.monitorsChannel <- status
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}
}
func (c *Client) monitorContacts() {
stream, err := c.Backend.MonitorContacts(context.Background(), &ricochet.MonitorContactsRequest{})
if err != nil {
log.Printf("Initializing contact status monitor failed: %v", err)
// XXX handle
return
}
for {
event, err := stream.Recv()
if err != nil {
log.Printf("Contact monitor error: %v", err)
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// XXX handle
break
}
c.monitorsChannel <- event
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}
}
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func (c *Client) monitorConversations() {
stream, err := c.Backend.MonitorConversations(context.Background(), &ricochet.MonitorConversationsRequest{})
if err != nil {
log.Printf("Initializing conversations monitor failed: %v", err)
// XXX handle
return
}
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for {
event, err := stream.Recv()
if err != nil {
log.Printf("Conversations monitor error: %v", err)
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// XXX handle
break
}
c.monitorsChannel <- event
}
}
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func (c *Client) onNetworkStatus(status *ricochet.NetworkStatus) {
log.Printf("Network status changed: %v", status)
c.NetworkStatus = *status
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c.populatedNetwork = true
c.checkIfPopulated()
}
func (c *Client) onContactEvent(event *ricochet.ContactEvent) {
if !c.populatedContacts && event.Type != ricochet.ContactEvent_POPULATE {
log.Printf("Ignoring unexpected contact event during populate: %v", event)
return
}
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data := event.GetContact()
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switch event.Type {
case ricochet.ContactEvent_POPULATE:
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if c.populatedContacts {
log.Printf("Ignoring unexpected contact populate event: %v", event)
} else if event.Subject == nil {
// Populate is terminated by a nil subject
c.populatedContacts = true
log.Printf("Loaded %d contacts", len(c.Contacts.Contacts))
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c.checkIfPopulated()
go c.monitorConversations()
} else if data != nil {
c.Contacts.Populate(data)
} else {
log.Printf("Invalid contact populate event: %v", event)
}
case ricochet.ContactEvent_ADD:
if data == nil {
log.Printf("Ignoring contact add event with null data")
return
}
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c.Contacts.Added(data)
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case ricochet.ContactEvent_UPDATE:
if data == nil {
log.Printf("Ignoring contact update event with null data")
return
}
contact := c.Contacts.ByIdAndAddress(data.Id, data.Address)
if contact == nil {
log.Printf("Ignoring contact update event for unknown contact: %v", data)
} else {
contact.Updated(data)
}
case ricochet.ContactEvent_DELETE:
if data == nil {
log.Printf("Ignoring contact delete event with null data")
return
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}
contact, _ := c.Contacts.Deleted(data)
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if Ui.CurrentContact == contact {
Ui.SetCurrentContact(nil)
}
default:
log.Printf("Ignoring unknown contact event: %v", event)
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}
}
func (c *Client) onConversationEvent(event *ricochet.ConversationEvent) {
message := event.Msg
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if event.Type == ricochet.ConversationEvent_POPULATE && message == nil {
c.populatedConversations = true
c.checkIfPopulated()
return
}
if message == nil || message.Recipient == nil || message.Sender == nil ||
(message.Sender.IsSelf && message.Recipient.IsSelf) {
log.Printf("Ignoring invalid conversation event: %v", event)
return
}
var remoteEntity *ricochet.Entity
if !message.Sender.IsSelf {
remoteEntity = message.Sender
} else {
remoteEntity = message.Recipient
}
remoteContact := c.Contacts.ByIdAndAddress(remoteEntity.ContactId, remoteEntity.Address)
if remoteContact == nil {
log.Printf("Ignoring conversation event with unknown contact: %v", event)
return
}
switch event.Type {
case ricochet.ConversationEvent_POPULATE:
fallthrough
case ricochet.ConversationEvent_RECEIVE:
fallthrough
case ricochet.ConversationEvent_SEND:
remoteContact.Conversation.AddMessage(message,
event.Type == ricochet.ConversationEvent_POPULATE)
case ricochet.ConversationEvent_UPDATE:
remoteContact.Conversation.UpdateMessage(message)
default:
log.Printf("Ignoring conversation event with unknown type: %v", event)
}
}
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func (c *Client) NetworkControlStatus() ricochet.TorControlStatus {
if c.NetworkStatus.Control != nil {
return *c.NetworkStatus.Control
} else {
return ricochet.TorControlStatus{}
}
}
func (c *Client) NetworkConnectionStatus() ricochet.TorConnectionStatus {
if c.NetworkStatus.Connection != nil {
return *c.NetworkStatus.Connection
} else {
return ricochet.TorConnectionStatus{}
}
}