|
|
|
@ -17,15 +17,13 @@ import (
|
|
|
|
|
"time"
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
// Engine (ProtocolEngine) encapsulates the logic necessary to make and receive Cwtch connections.
|
|
|
|
|
// Note: ProtocolEngine doesn't have access to any information necessary to encrypt or decrypt GroupMessages
|
|
|
|
|
type Engine struct {
|
|
|
|
|
type engine struct {
|
|
|
|
|
queue *event.Queue
|
|
|
|
|
connectionsManager *Manager
|
|
|
|
|
|
|
|
|
|
// Engine Attributes
|
|
|
|
|
Identity identity.Identity
|
|
|
|
|
ACN connectivity.ACN
|
|
|
|
|
identity identity.Identity
|
|
|
|
|
acn connectivity.ACN
|
|
|
|
|
|
|
|
|
|
app *application.RicochetApplication
|
|
|
|
|
|
|
|
|
@ -37,18 +35,39 @@ type Engine struct {
|
|
|
|
|
|
|
|
|
|
// Pointer to the Global Event Manager
|
|
|
|
|
eventManager *event.Manager
|
|
|
|
|
privateKey ed25519.PrivateKey
|
|
|
|
|
|
|
|
|
|
// Required for listen(), inaccessible from identity
|
|
|
|
|
privateKey ed25519.PrivateKey
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Engine (ProtocolEngine) encapsulates the logic necessary to make and receive Cwtch connections.
|
|
|
|
|
// Note: ProtocolEngine doesn't have access to any information necessary to encrypt or decrypt GroupMessages
|
|
|
|
|
type Engine interface {
|
|
|
|
|
Identity() identity.Identity
|
|
|
|
|
ACN() connectivity.ACN
|
|
|
|
|
|
|
|
|
|
GetPeerHandler(string) *CwtchPeerHandler
|
|
|
|
|
ContactRequest(string, string) string
|
|
|
|
|
|
|
|
|
|
LookupContact(string, rsa.PublicKey) (bool, bool)
|
|
|
|
|
LookupContactV3(string, ed25519.PublicKey) (bool, bool)
|
|
|
|
|
|
|
|
|
|
GetPeers() map[string]ConnectionState
|
|
|
|
|
GetServers() map[string]ConnectionState
|
|
|
|
|
|
|
|
|
|
Shutdown()
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// NewProtocolEngine initializes a new engine that runs Cwtch using the given parameters
|
|
|
|
|
func NewProtocolEngine(privateKey ed25519.PrivateKey, acn connectivity.ACN, eventManager *event.Manager, blockedPeers []string) *Engine {
|
|
|
|
|
engine := new(Engine)
|
|
|
|
|
func NewProtocolEngine(identity identity.Identity, privateKey ed25519.PrivateKey, acn connectivity.ACN, eventManager *event.Manager, blockedPeers []string) Engine {
|
|
|
|
|
engine := new(engine)
|
|
|
|
|
engine.identity = identity
|
|
|
|
|
engine.privateKey = privateKey
|
|
|
|
|
engine.queue = event.NewEventQueue(100)
|
|
|
|
|
go engine.eventHandler()
|
|
|
|
|
|
|
|
|
|
engine.ACN = acn
|
|
|
|
|
engine.connectionsManager = NewConnectionsManager(engine.ACN)
|
|
|
|
|
engine.acn = acn
|
|
|
|
|
engine.connectionsManager = NewConnectionsManager(engine.acn)
|
|
|
|
|
go engine.connectionsManager.AttemptReconnections()
|
|
|
|
|
|
|
|
|
|
engine.eventManager = eventManager
|
|
|
|
@ -67,21 +86,29 @@ func NewProtocolEngine(privateKey ed25519.PrivateKey, acn connectivity.ACN, even
|
|
|
|
|
return engine
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (e *engine) ACN() connectivity.ACN {
|
|
|
|
|
return e.acn
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (e *engine) Identity() identity.Identity {
|
|
|
|
|
return e.identity
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// eventHandler process events from other subsystems
|
|
|
|
|
func (e *Engine) eventHandler() {
|
|
|
|
|
func (e *engine) eventHandler() {
|
|
|
|
|
for {
|
|
|
|
|
ev := e.queue.Next()
|
|
|
|
|
switch ev.EventType {
|
|
|
|
|
case event.StatusRequest:
|
|
|
|
|
e.eventManager.Publish(event.Event{EventType: event.ProtocolEngineStatus, EventID: ev.EventID})
|
|
|
|
|
case event.PeerRequest:
|
|
|
|
|
e.PeerWithOnion(ev.Data[event.RemotePeer])
|
|
|
|
|
e.peerWithOnion(ev.Data[event.RemotePeer])
|
|
|
|
|
case event.InvitePeerToGroup:
|
|
|
|
|
e.InviteOnionToGroup(ev.Data[event.RemotePeer], []byte(ev.Data[event.GroupInvite]))
|
|
|
|
|
e.inviteOnionToGroup(ev.Data[event.RemotePeer], []byte(ev.Data[event.GroupInvite]))
|
|
|
|
|
case event.JoinServer:
|
|
|
|
|
e.JoinServer(ev.Data[event.GroupServer])
|
|
|
|
|
e.joinServer(ev.Data[event.GroupServer])
|
|
|
|
|
case event.SendMessageToGroup:
|
|
|
|
|
e.SendMessageToGroup(ev.Data[event.GroupServer], []byte(ev.Data[event.Ciphertext]), []byte(ev.Data[event.Signature]))
|
|
|
|
|
e.sendMessageToGroup(ev.Data[event.GroupServer], []byte(ev.Data[event.Ciphertext]), []byte(ev.Data[event.Signature]))
|
|
|
|
|
case event.SendMessageToPeer:
|
|
|
|
|
log.Debugf("Sending Message to Peer.....")
|
|
|
|
|
ppc := e.connectionsManager.GetPeerPeerConnectionForOnion(ev.Data[event.RemotePeer])
|
|
|
|
@ -110,16 +137,16 @@ func (e *Engine) eventHandler() {
|
|
|
|
|
|
|
|
|
|
// GetPeerHandler is an external interface function that allows callers access to a CwtchPeerHandler
|
|
|
|
|
// TODO: There is likely a slightly better way to encapsulate this behavior
|
|
|
|
|
func (e *Engine) GetPeerHandler(remotePeerHostname string) *CwtchPeerHandler {
|
|
|
|
|
func (e *engine) GetPeerHandler(remotePeerHostname string) *CwtchPeerHandler {
|
|
|
|
|
return &CwtchPeerHandler{Onion: remotePeerHostname, EventBus: e.eventManager}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Listen sets up an onion listener to process incoming cwtch messages
|
|
|
|
|
func (e *Engine) listenFn() {
|
|
|
|
|
func (e *engine) listenFn() {
|
|
|
|
|
ra := new(application.RicochetApplication)
|
|
|
|
|
onionService, err := e.ACN.Listen(e.privateKey, application.RicochetPort)
|
|
|
|
|
onionService, err := e.acn.Listen(e.privateKey, application.RicochetPort)
|
|
|
|
|
if err != nil /*&& fmt.Sprintf("%v", err) != "550 Unspecified Tor error: Onion address collision"*/ {
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.ProtocolEngineStopped, map[event.Field]string{event.Identity: e.Identity.Hostname(), event.Error: err.Error()}))
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.ProtocolEngineStopped, map[event.Field]string{event.Identity: e.identity.Hostname(), event.Error: err.Error()}))
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -145,29 +172,29 @@ func (e *Engine) listenFn() {
|
|
|
|
|
}
|
|
|
|
|
})
|
|
|
|
|
|
|
|
|
|
ra.Init(e.ACN, e.Identity.Name, e.Identity, af, e)
|
|
|
|
|
ra.Init(e.ACN(), e.identity.Name, e.identity, af, e)
|
|
|
|
|
log.Infof("Running cwtch peer on %v", onionService.AddressFull())
|
|
|
|
|
e.started = true
|
|
|
|
|
e.app = ra
|
|
|
|
|
ra.Run(onionService)
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.ProtocolEngineStopped, map[event.Field]string{event.Identity: e.Identity.Hostname()}))
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.ProtocolEngineStopped, map[event.Field]string{event.Identity: e.identity.Hostname()}))
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// LookupContact is a V2 API Call, we want to reject all V2 Peers
|
|
|
|
|
// TODO Deprecate
|
|
|
|
|
func (e *Engine) LookupContact(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
|
|
|
|
|
func (e *engine) LookupContact(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
|
|
|
|
|
return false, false
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// ContactRequest is a V2 API Call needed to implement ContactRequestHandler Interface
|
|
|
|
|
// TODO Deprecate
|
|
|
|
|
func (e *Engine) ContactRequest(name string, message string) string {
|
|
|
|
|
func (e *engine) ContactRequest(name string, message string) string {
|
|
|
|
|
return "Rejected"
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// LookupContactV3 returns that a contact is known and allowed to communicate for all cases.
|
|
|
|
|
func (e *Engine) LookupContactV3(hostname string, publicKey ed25519.PublicKey) (allowed, known bool) {
|
|
|
|
|
func (e *engine) LookupContactV3(hostname string, publicKey ed25519.PublicKey) (allowed, known bool) {
|
|
|
|
|
// TODO: We want to autoblock those that are blocked, The known parameter has no use anymore and should be
|
|
|
|
|
// disregarded by peers, so we set it to false.
|
|
|
|
|
if _, blocked := e.blocked.Load(hostname); blocked {
|
|
|
|
@ -177,19 +204,19 @@ func (e *Engine) LookupContactV3(hostname string, publicKey ed25519.PublicKey) (
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Shutdown tears down the eventHandler goroutine
|
|
|
|
|
func (e *Engine) Shutdown() {
|
|
|
|
|
func (e *engine) Shutdown() {
|
|
|
|
|
e.connectionsManager.Shutdown()
|
|
|
|
|
e.app.Shutdown()
|
|
|
|
|
e.queue.Shutdown()
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// PeerWithOnion is the entry point for cwtchPeer relationships
|
|
|
|
|
func (e *Engine) PeerWithOnion(onion string) *PeerPeerConnection {
|
|
|
|
|
// peerWithOnion is the entry point for cwtchPeer relationships
|
|
|
|
|
func (e *engine) peerWithOnion(onion string) *PeerPeerConnection {
|
|
|
|
|
return e.connectionsManager.ManagePeerConnection(onion, e)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// InviteOnionToGroup kicks off the invite process
|
|
|
|
|
func (e *Engine) InviteOnionToGroup(onion string, invite []byte) error {
|
|
|
|
|
// inviteOnionToGroup kicks off the invite process
|
|
|
|
|
func (e *engine) inviteOnionToGroup(onion string, invite []byte) error {
|
|
|
|
|
ppc := e.connectionsManager.GetPeerPeerConnectionForOnion(onion)
|
|
|
|
|
if ppc == nil {
|
|
|
|
|
return errors.New("peer connection not setup for onion. peers must be trusted before sending")
|
|
|
|
@ -203,25 +230,25 @@ func (e *Engine) InviteOnionToGroup(onion string, invite []byte) error {
|
|
|
|
|
return nil
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// ReceiveGroupMessage is a callback function that processes GroupMessages from a given server
|
|
|
|
|
func (e *Engine) ReceiveGroupMessage(server string, gm *protocol.GroupMessage) {
|
|
|
|
|
// receiveGroupMessage is a callback function that processes GroupMessages from a given server
|
|
|
|
|
func (e *engine) receiveGroupMessage(server string, gm *protocol.GroupMessage) {
|
|
|
|
|
// Publish Event so that a Profile Engine can deal with it.
|
|
|
|
|
// Note: This technically means that *multiple* Profile Engines could listen to the same ProtocolEngine!
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.EncryptedGroupMessage, map[event.Field]string{event.Ciphertext: string(gm.GetCiphertext()), event.Signature: string(gm.GetSignature())}))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// FinishedFetch is a callback function the processes the termination of a fetch channel from a given server
|
|
|
|
|
func (e *Engine) FinishedFetch(server string) {
|
|
|
|
|
// finishedFetch is a callback function the processes the termination of a fetch channel from a given server
|
|
|
|
|
func (e *engine) finishedFetch(server string) {
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.FinishedFetch, map[event.Field]string{event.GroupServer: server}))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// JoinServer manages a new server connection with the given onion address
|
|
|
|
|
func (e *Engine) JoinServer(onion string) {
|
|
|
|
|
e.connectionsManager.ManageServerConnection(onion, e.ReceiveGroupMessage, e.FinishedFetch)
|
|
|
|
|
// joinServer manages a new server connection with the given onion address
|
|
|
|
|
func (e *engine) joinServer(onion string) {
|
|
|
|
|
e.connectionsManager.ManageServerConnection(onion, e.receiveGroupMessage, e.finishedFetch)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// SendMessageToGroup attempts to sent the given message to the given group id.
|
|
|
|
|
func (e *Engine) SendMessageToGroup(server string, ct []byte, sig []byte) {
|
|
|
|
|
// sendMessageToGroup attempts to sent the given message to the given group id.
|
|
|
|
|
func (e *engine) sendMessageToGroup(server string, ct []byte, sig []byte) {
|
|
|
|
|
psc := e.connectionsManager.GetPeerServerConnectionForOnion(server)
|
|
|
|
|
if psc == nil {
|
|
|
|
|
e.eventManager.Publish(event.NewEvent(event.SendMessageToGroupError, map[event.Field]string{event.GroupServer: server, event.Signature: string(sig), event.Error: "server is offline or the connection has yet to finalize"}))
|
|
|
|
@ -238,12 +265,12 @@ func (e *Engine) SendMessageToGroup(server string, ct []byte, sig []byte) {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// GetPeers returns a list of peer connections.
|
|
|
|
|
func (e *Engine) GetPeers() map[string]ConnectionState {
|
|
|
|
|
func (e *engine) GetPeers() map[string]ConnectionState {
|
|
|
|
|
return e.connectionsManager.GetPeers()
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// GetServers returns a list of server connections
|
|
|
|
|
func (e *Engine) GetServers() map[string]ConnectionState {
|
|
|
|
|
func (e *engine) GetServers() map[string]ConnectionState {
|
|
|
|
|
return e.connectionsManager.GetServers()
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|