Tweak replayable errors

1. Return the value returned by the registered function, to expose the
underlying promise to the caller.

2. Stop accepting extra arguments to the replay function. The caller
should be able to do what they want with the returned promise instead.

3. Add a timestamp argument to the outgoing case, needed to re-try
sending a message.

js/libtextsecure.js

@@ -40,31 +40,30 @@
     ReplayableError.prototype.constructor = ReplayableError;
 
     ReplayableError.prototype.replay = function() {
-        var args = Array.prototype.slice.call(arguments);
-        args.shift();
-        args = this.args.concat(args);
-
-        registeredFunctions[this.functionCode].apply(window, args);
+        return registeredFunctions[this.functionCode].apply(window, this.args);
     };
 
     function IncomingIdentityKeyError(number, message) {
         ReplayableError.call(this, {
             functionCode : Type.INIT_SESSION,
             args         : [number, message]
+
         });
         this.name = 'IncomingIdentityKeyError';
         this.message = "The identity of the sender has changed. This may be malicious, or the sender may have simply reinstalled TextSecure.";
+        this.number = number.split('.')[0];
     }
     IncomingIdentityKeyError.prototype = new ReplayableError();
     IncomingIdentityKeyError.prototype.constructor = IncomingIdentityKeyError;
 
-    function OutgoingIdentityKeyError(number, message) {
+    function OutgoingIdentityKeyError(number, message, timestamp) {
         ReplayableError.call(this, {
             functionCode : Type.SEND_MESSAGE,
-            args         : [number, message]
+            args         : [number, message, timestamp]
         });
         this.name = 'OutgoingIdentityKeyError';
         this.message = "The identity of the destination has changed. This may be malicious, or the destination may have simply reinstalled TextSecure.";
+        this.number = number.split('.')[0];
     }
     OutgoingIdentityKeyError.prototype = new ReplayableError();
     OutgoingIdentityKeyError.prototype.constructor = OutgoingIdentityKeyError;

libtextsecure/errors.js

@@ -40,31 +40,30 @@
     ReplayableError.prototype.constructor = ReplayableError;
 
     ReplayableError.prototype.replay = function() {
-        var args = Array.prototype.slice.call(arguments);
-        args.shift();
-        args = this.args.concat(args);
-
-        registeredFunctions[this.functionCode].apply(window, args);
+        return registeredFunctions[this.functionCode].apply(window, this.args);
     };
 
     function IncomingIdentityKeyError(number, message) {
         ReplayableError.call(this, {
             functionCode : Type.INIT_SESSION,
             args         : [number, message]
+
         });
         this.name = 'IncomingIdentityKeyError';
         this.message = "The identity of the sender has changed. This may be malicious, or the sender may have simply reinstalled TextSecure.";
+        this.number = number.split('.')[0];
     }
     IncomingIdentityKeyError.prototype = new ReplayableError();
     IncomingIdentityKeyError.prototype.constructor = IncomingIdentityKeyError;
 
-    function OutgoingIdentityKeyError(number, message) {
+    function OutgoingIdentityKeyError(number, message, timestamp) {
         ReplayableError.call(this, {
             functionCode : Type.SEND_MESSAGE,
-            args         : [number, message]
+            args         : [number, message, timestamp]
         });
         this.name = 'OutgoingIdentityKeyError';
         this.message = "The identity of the destination has changed. This may be malicious, or the destination may have simply reinstalled TextSecure.";
+        this.number = number.split('.')[0];
     }
     OutgoingIdentityKeyError.prototype = new ReplayableError();
     OutgoingIdentityKeyError.prototype.constructor = OutgoingIdentityKeyError;