Adding remoteRegistrationId interface on SessionCipher objects.

Author: FredericJacobs

AxolotlKit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "AxolotlKit"
-  s.version      = "0.6"
+  s.version      = "0.6.1"
   s.summary      = "AxolotlKit is a Free implementation of the Axolotl protocol in Objective-C"
   s.homepage     = "https://github.com/WhisperSystems/AxolotlKit"
   s.license      = "GPLv2"

AxolotlKit/Classes/SessionCipher.h

@@ -27,4 +27,7 @@
 
 - (NSData*)decrypt:(id<CipherMessage>)whisperMessage;
 
+- (int)remoteRegistrationId;
+- (int)sessionVersion;
+
 @end

AxolotlKit/Classes/SessionCipher.m

@@ -267,4 +267,24 @@ + (NSData*)currentProtocolVersion{
 }
 
 
+- (int)remoteRegistrationId{
+    SessionRecord *record = [self.sessionStore loadSession:self.recipientId deviceId:_deviceId];
+    
+    if (!record) {
+        @throw [NSException exceptionWithName:NoSessionException reason:@"Trying to get registration Id of a non-existing session." userInfo:nil];
+    }
+    
+    return record.sessionState.remoteRegistrationId;
+}
+
+- (int)sessionVersion{
+    SessionRecord *record = [self.sessionStore loadSession:self.recipientId deviceId:_deviceId];
+    
+    if (!record) {
+        @throw [NSException exceptionWithName:NoSessionException reason:@"Trying to get the version of a non-existing session." userInfo:nil];
+    }
+    
+    return record.sessionState.version;
+}
+
 @end