API for Block/Allow Unknown Connections

This was previously an application level setting handled by the UI. This commit
pushes back that functionality to the profile.

peer/cwtch_peer.go

@@ -43,6 +43,17 @@ type cwtchPeer struct {
 	eventBus event.Manager
 }
 
+// BlockUnknownConnections will auto disconnect from connections if authentication doesn't resolve a hostname
+// known to peer.
+func (cp *cwtchPeer) BlockUnknownConnections() {
+	cp.eventBus.Publish(event.NewEvent(event.BlockUnknownPeers, map[event.Field]string{}))
+}
+
+// AllowUnknownConnections will permit connections from unknown contacts.
+func (cp *cwtchPeer) AllowUnknownConnections() {
+	cp.eventBus.Publish(event.NewEvent(event.AllowUnknownPeers, map[event.Field]string{}))
+}
+
 // ReadContacts is a meta-interface intended to restrict callers to read-only access to contacts
 type ReadContacts interface {
 	GetContacts() []string
@@ -65,6 +76,8 @@ type AccessPeeringState interface {
 
 // ModifyPeeringState is a meta-interface intended to restrict callers to modify-only access to connection peers
 type ModifyPeeringState interface {
+	BlockUnknownConnections()
+	AllowUnknownConnections()
 	PeerWithOnion(string)
 	JoinServer(string) error
 }

protocol/connections/engine.go

@@ -178,8 +178,10 @@ func (e *engine) eventHandler() {
 				e.peerDisconnected(ev.Data[event.RemotePeer])
 			}
 		case event.AllowUnknownPeers:
+			log.Debugf("%v now allows unknown connections", e.identity.Hostname())
 			e.blockUnknownContacts = false
 		case event.BlockUnknownPeers:
+			log.Debugf("%v now forbids unknown connections", e.identity.Hostname())
 			e.blockUnknownContacts = true
 		case event.ProtocolEngineStartListen:
 			go e.listenFn()