Fixes #34 in public release. We now have different states for the MTDCanceling and canceled calls now end in a canceled state. Also a few other hardening bug fixes.

git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@3018 19bc5d8c-e614-43d4-8b26-e1612bc8e597

Control/CallControl.cpp

@@ -118,7 +118,8 @@ void forceSIPClearing(TransactionEntry *transaction)
 {
 	SIP::SIPState state = transaction->SIPState();
 	LOG(INFO) << "SIP state " << state;
-	if (state==SIP::Cleared) return;
+	//why aren't we checking for failed here? -kurtis
+	if (transaction->SIPFinished()) return;
 	if (state==SIP::Active){
 		//Changes state to clearing
 		transaction->MODSendBYE();
@@ -325,7 +326,7 @@ bool callManagementDispatchGSM(TransactionEntry *transaction, GSM::LogicalChanne
 		LCH->send(GSM::L3ReleaseComplete(transaction->L3TI()));
 		LCH->send(GSM::L3ChannelRelease());
 		transaction->GSMState(GSM::NullState);
-		transaction->MTDSendOK();
+		transaction->MTDSendBYEOK();
 		return true;
 	}
 
@@ -514,10 +515,9 @@ bool updateSIPSignalling(TransactionEntry *transaction, GSM::LogicalChannel *LCH
 
 	// The main purpose of this code is to initiate disconnects from the SIP side.
 
-	if (transaction->SIPState()==SIP::Cleared) return true;
+	if (transaction->SIPFinished()) return true;
 
 	bool GSMClearedOrClearing = GSMCleared || transaction->clearingGSM();
-
 	if (transaction->MTDCheckBYE() == SIP::MTDClearing) {
 		LOG(DEBUG) << "got SIP BYE " << *transaction;
 		if (!GSMClearedOrClearing) {
@@ -528,11 +528,11 @@ bool updateSIPSignalling(TransactionEntry *transaction, GSM::LogicalChannel *LCH
 		} else {
 			// GSM already cleared?
 			// Ack the BYE and end the call.
-			transaction->MTDSendOK();
+			transaction->MTDSendBYEOK();
 		}
 	}
 
-	return transaction->SIPState()==SIP::Cleared;
+	return (transaction->SIPFinished());
 }
 
 
@@ -548,8 +548,8 @@ bool updateSignalling(TransactionEntry *transaction, GSM::LogicalChannel *LCH, u
 {
 
 	bool GSMCleared = (updateGSMSignalling(transaction,LCH,timeout));
-	bool SIPCleared = updateSIPSignalling(transaction,LCH,GSMCleared);
-	return GSMCleared && SIPCleared;
+	bool SIPFinished = updateSIPSignalling(transaction,LCH,GSMCleared);
+	return GSMCleared && SIPFinished;
 }
 
 
@@ -628,7 +628,7 @@ bool waitInCall(TransactionEntry *transaction, GSM::TCHFACCHLogicalChannel *TCH,
 void callManagementLoop(TransactionEntry *transaction, GSM::TCHFACCHLogicalChannel* TCH)
 {
 	LOG(INFO) << " call connected " << *transaction;
-	// poll everything until the call is cleared
+	// poll everything until the call is finished
 	while (!pollInCall(transaction,TCH)) { }
 	gTransactionTable.remove(transaction);
 }
@@ -948,11 +948,17 @@ void Control::MTCStarter(TransactionEntry *transaction, GSM::LogicalChannel *LCH
 			return;
 		}
 		// Check for SIP cancel, too.
-		if (transaction->MTCCheckForCancel()==SIP::Fail) {
-			LOG(NOTICE) << "call cancelled or failed on SIP side";
+		if (transaction->MTCCheckForCancel()==SIP::MTDCanceling) {
+			LOG(INFO) << "call cancelled on SIP side";
+			transaction->MTDSendCANCELOK();
 			// Cause 0x15 is "rejected"
 			return abortAndRemoveCall(transaction,LCH,GSM::L3Cause(0x15));
 		}
+		//lastly check if we're toast
+		if(transaction->SIPState()==SIP::Fail) {
+			LOG(DEBUG) << "Call failed";
+			return abortAndRemoveCall(transaction,LCH,GSM::L3Cause(0x7F));
+		}
 	}
 
 	// The transaction is moving to the MTCController.
@@ -1006,8 +1012,15 @@ void Control::MTCController(TransactionEntry *transaction, GSM::TCHFACCHLogicalC
 			transaction->MTCSendRinging();
 		}
 		// Check for SIP cancel, too.
-		if (transaction->MTCCheckForCancel()==SIP::Fail) {
-			LOG(DEBUG) << "MTCCheckForCancel return Fail";
+		if (transaction->MTCCheckForCancel()==SIP::MTDCanceling) {
+			LOG(INFO) << "MTCCheckForCancel return Canceling";
+			transaction->MTDSendCANCELOK();
+			// Cause 0x15 is "rejected"
+			return abortAndRemoveCall(transaction,TCH,GSM::L3Cause(0x15));
+		}
+		//check if we're toast
+		if (transaction->SIPState()==SIP::Fail){
+			LOG(DEBUG) << "Call failed";
 			return abortAndRemoveCall(transaction,TCH,GSM::L3Cause(0x7F));
 		}
 	}
@@ -1031,6 +1044,10 @@ void Control::MTCController(TransactionEntry *transaction, GSM::TCHFACCHLogicalC
 				break;
 			case SIP::Connecting:
 				break;
+			case SIP::MTDCanceling:
+				state = transaction->MTDSendCANCELOK();
+				// Cause 0x15 is "rejected"
+				return abortAndRemoveCall(transaction,TCH,GSM::L3Cause(0x15));
 			default:
 				LOG(NOTICE) << "SIP unexpected state " << state;
 				break;

Control/TransactionTable.cpp

@@ -460,10 +460,18 @@ SIP::SIPState TransactionEntry::MTDCheckBYE()
 	return state;
 }
 
-SIP::SIPState TransactionEntry::MTDSendOK()
+SIP::SIPState TransactionEntry::MTDSendBYEOK()
 {
 	ScopedLock lock(mLock);
-	SIP::SIPState state = mSIP.MTDSendOK();
+	SIP::SIPState state = mSIP.MTDSendBYEOK();
+	echoSIPState(state);
+	return state;
+}
+
+SIP::SIPState TransactionEntry::MTDSendCANCELOK()
+{
+	ScopedLock lock(mLock);
+	SIP::SIPState state = mSIP.MTDSendCANCELOK();
 	echoSIPState(state);
 	return state;
 }

Control/TransactionTable.h

@@ -177,6 +177,8 @@ class TransactionEntry {
 
 	SIP::SIPState SIPState() { ScopedLock lock(mLock); return mSIP.state(); } 
 
+	bool SIPFinished() { ScopedLock lock(mLock); return mSIP.finished(); } 
+
 	SIP::SIPState MOCSendINVITE(const char* calledUser, const char* calledDomain, short rtpPort, unsigned codec);
 	SIP::SIPState MOCResendINVITE();
 	SIP::SIPState MOCWaitForOK();
@@ -204,7 +206,8 @@ class TransactionEntry {
 	SIP::SIPState MODWaitForOK();
 
 	SIP::SIPState MTDCheckBYE();
-	SIP::SIPState MTDSendOK();
+	SIP::SIPState MTDSendBYEOK();
+	SIP::SIPState MTDSendCANCELOK();
 
 	// TODO: Remove contentType from here and use the setter above.
 	SIP::SIPState MOSMSSendMESSAGE(const char* calledUser, const char* calledDomain, const char* contentType);

SIP/SIPEngine.cpp

@@ -71,6 +71,8 @@ const char* SIP::SIPStateString(SIPState s)
 		case MODClearing: return "MODClearing";
 		case MODCanceling: return "MODCanceling";
 		case MTDClearing: return "MTDClearing";
+		case MTDCanceling: return "MTDCanceling";
+		case Canceled: return "Canceled";
 		case Cleared: return "Cleared";
 		case MessageSubmit: return "SMS-Submit";
 		default: return NULL;
@@ -622,8 +624,12 @@ SIPState SIPEngine::MODWaitForOK()
 
 	if (!responded) { LOG(ALERT) << "lost contact with proxy " << mProxyIP << ":" << mProxyPort; }
 
-	// However we got here, the SIP side of the call is cleared now.
+	//Canceled if we're canceling, otherwise clear
+	if (mState==MODCanceling){
+		mState = Canceled;
+	} else {
 		mState = Cleared;
+	}
 	return mState;
 }
 
@@ -669,7 +675,7 @@ SIPState SIPEngine::MTDCheckBYE()
 } 
 
 
-SIPState SIPEngine::MTDSendOK()
+SIPState SIPEngine::MTDSendBYEOK()
 {
 	LOG(INFO) << "user " << mSIPUsername << " state " << mState;
 	assert(mBYE);
@@ -680,6 +686,17 @@ SIPState SIPEngine::MTDSendOK()
 	return mState;
 }
 
+SIPState SIPEngine::MTDSendCANCELOK()
+{
+	LOG(INFO) << "user " << mSIPUsername << " state " << mState;
+	assert(mCANCEL);
+	osip_message_t * okay = sip_b_okay(mCANCEL);
+	gSIPInterface.write(&mProxyAddr,okay);
+	osip_message_free(okay);
+	mState = Canceled;
+	return mState;
+}
+
 
 SIPState SIPEngine::MTCSendTrying()
 {
@@ -772,10 +789,8 @@ SIPState SIPEngine::MTCWaitForACK()
 	// check for the CANCEL
 	else if( strcmp(ack->sip_method,"CANCEL") == 0){ 
 		LOG(INFO) << "received CANCEL";
-		osip_message_t * okay = sip_okay(ack, mSIPUsername.c_str(),mSIPIP.c_str(), mSIPPort);
-		gSIPInterface.write(&mProxyAddr,okay);
-		osip_message_free(okay);
-		mState=Fail;
+		saveCANCEL(ack, false);
+		mState=MTDCanceling;
 	}
 	// check for strays
 	else {
@@ -826,10 +841,8 @@ SIPState SIPEngine::MTCCheckForCancel()
 	// check for the CANCEL
 	else if (strcmp(msg->sip_method,"CANCEL")==0) { 
 		LOG(INFO) << "received CANCEL";
-		osip_message_t * okay = sip_okay(msg, mSIPUsername.c_str(),mSIPIP.c_str(), mSIPPort);
-		gSIPInterface.write(&mProxyAddr,okay);
-		osip_message_free(okay);
-		mState=Fail;
+		saveCANCEL(msg, false);
+		mState=MTDCanceling;
 	}
 	// check for strays
 	else {

SIP/SIPEngine.h

@@ -59,6 +59,8 @@ enum SIPState  {
 	MODClearing,
 	MODCanceling,
 	MTDClearing,
+	MTDCanceling,
+	Canceled,
 	Cleared,
 	Fail,
 	MessageSubmit
@@ -149,6 +151,10 @@ public:
 	/** Return the current SIP call state. */
 	SIPState state() const { return mState; }
 
+	/** Return if the call has successfully finished */
+	bool finished() const { return (mState==Cleared || mState==Canceled); }
+
+
 	/** Set the user to IMSI<IMSI> and generate a call ID; for mobile-originated transactions. */
 	void user( const char * IMSI );
 
@@ -279,7 +285,9 @@ public:
 	//@{
 	SIPState MTDCheckBYE();	
 
-	SIPState MTDSendOK();
+	SIPState MTDSendBYEOK();
+
+	SIPState MTDSendCANCELOK();
 	//@}
 
 

SIP/SIPMessage.cpp

@@ -596,12 +596,52 @@ osip_message_t * SIP::sip_bye(const char * req_uri, const char * dialed_number,
 osip_message_t * SIP::sip_cancel( osip_message_t * invite)
 {
 
+	if(invite==NULL){ return NULL;}
+
 	osip_message_t * cancel;
 	osip_message_init(&cancel);
-	osip_message_clone(invite, &cancel);
+	//clone doesn't work -kurtis
+	//osip_message_clone(invite, &cancel);
 	// FIXME -- Should use the "force_update" function.
 	cancel->message_property = 2;
+	//header stuff first
 	cancel->sip_method = strdup("CANCEL");
+	osip_message_set_version(cancel, strdup("SIP/2.0"));
+	
+	//uri
+	osip_uri_init(&cancel->req_uri);
+	osip_uri_clone(invite->req_uri, &cancel->req_uri);
+
+	//via
+	osip_via_t * via;
+	char * via_str;
+	osip_message_get_via(invite, 0, &via);
+	osip_via_to_str(via, &via_str);
+	osip_message_set_via(cancel, via_str);
+	osip_free(via_str);
+
+	// from/to header
+	osip_from_clone(invite->from, &cancel->from);
+	osip_to_clone(invite->to, &cancel->to);
+
+	//contact
+	osip_contact_t * cont;
+	char * cont_str;
+	osip_message_get_contact(invite, 0, &cont);
+	osip_contact_to_str(cont, &cont_str);
+	osip_message_set_contact(cancel, cont_str);
+	osip_free(cont_str);
+
+	// Get Call-ID.
+	osip_call_id_clone(invite->call_id, &cancel->call_id);
+
+	  // Get Cseq.
+	osip_cseq_t * cseq;
+	char * cseq_str;
+	cseq = osip_message_get_cseq(invite);
+	osip_cseq_to_str(cseq ,&cseq_str);
+	osip_message_set_cseq(cancel, cseq_str);	
+	osip_free(cseq_str);
 
 	//update message type
 	osip_cseq_set_method(cancel->cseq, strdup("CANCEL"));