- attempt to avoid IRC client crashes on Internet menu if user does not have an Internet connection

source/glest_game/menu/menu_state_masterserver.cpp

@@ -234,6 +234,8 @@ MenuStateMasterserver::MenuStateMasterserver(Program *program, MainMenu *mainMen
     ircArgs.push_back(IRC_SERVER);
     ircArgs.push_back(szIRCNick);
     ircArgs.push_back(IRC_CHANNEL);
+
+    MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
     ircClient = new IRCThread(ircArgs,this);
     ircClient->setUniqueID(__FILE__);
     ircClient->start();
@@ -255,12 +257,21 @@ void MenuStateMasterserver::setButtonLinePosition(int pos){
 	listBoxAutoRefresh.setY(pos);
 }
 
-void MenuStateMasterserver::IRC_CallbackEvent(const char* origin, const char **params, unsigned int count) {
+void MenuStateMasterserver::IRC_CallbackEvent(IRCEventType evt, const char* origin, const char **params, unsigned int count) {
+    MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
+    if(ircClient != NULL) {
+        if(evt == IRC_evt_exitThread) {
+            ircClient = NULL;
+        }
+        else if(evt == IRC_evt_chatText) {
             //printf ("===> IRC: '%s' said in channel %s: %s\n",origin ? origin : "someone",params[0], params[1] );
+
             char szBuf[4096]="";
             sprintf(szBuf,"%s: %s",origin ? origin : "someone",params[1]);
             consoleIRC.addLine(szBuf);
         }
+    }
+}
 
 void MenuStateMasterserver::cleanup() {
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
@@ -297,9 +308,11 @@ void MenuStateMasterserver::cleanup() {
 	clearUserButtons();
 
     //printf("Exiting master server menu [%p]\n",ircClient);
+    MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
     if(ircClient != NULL) {
         SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
+        ircClient->setCallbackObj(NULL);
         ircClient->signalQuit();
         //if(ircClient->shutdownAndWait() == true) {
             SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
@@ -526,6 +539,7 @@ void MenuStateMasterserver::render(){
 		renderer.renderLabel(&externalConnectPort,&titleLabelColor);
 		renderer.renderLabel(&selectButton,&titleLabelColor);
 
+        MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
         if(ircClient != NULL &&
            ircClient->isConnected() == true &&
            ircClient->getHasJoinedChannel() == true) {
@@ -536,6 +550,8 @@ void MenuStateMasterserver::render(){
             const Vec4f titleLabelColor = RED;
             renderer.renderLabel(&ircOnlinePeopleLabel,&titleLabelColor);
         }
+        safeMutexIRCPtr.ReleaseLock();
+
         const Vec4f titleLabelColorList = YELLOW;
 
 		for(int i=0; i<serverLines.size() && i<serverLinesToRender; ++i){
@@ -591,7 +607,7 @@ void MenuStateMasterserver::update() {
     //console
     consoleIRC.update();
 
-	
+    MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
     if(ircClient != NULL) {
         std::vector<string> nickList = ircClient->getNickList();
         bool isNew=false;
@@ -620,6 +636,7 @@ void MenuStateMasterserver::update() {
 	        oldNickList=nickList;
         }
     }
+    safeMutexIRCPtr.ReleaseLock();
 
 	if(threadedErrorMsg != "") {
 		std::string sError = threadedErrorMsg;
@@ -892,6 +909,7 @@ void MenuStateMasterserver::keyDown(char key) {
 
     if(chatManager.getEditEnabled() == true) {
         //printf("keyDown key [%d] chatManager.getText() [%s]\n",key,chatManager.getText().c_str());
+        MutexSafeWrapper safeMutexIRCPtr(&mutexIRCClient);
         if(key == vkReturn && ircClient != NULL) {
             ircClient->SendIRCCmdMessage(IRC_CHANNEL, chatManager.getText());
         }

source/glest_game/menu/menu_state_masterserver.h

@@ -98,6 +98,7 @@ private:
 	bool masterServerThreadInDeletion;
 
     std::vector<string> ircArgs;
+	Mutex mutexIRCClient;
 	IRCThread *ircClient;
 	std::vector<string> oldNickList;
 
@@ -121,8 +122,6 @@ public:
 
 	static void setDisplayMessageFunction(DisplayMessageFunction pDisplayMessage) { pCB_DisplayMessage = pDisplayMessage; }
 
-    virtual void IRC_CallbackEvent(const char* origin, const char **params, unsigned int count);
-
 private:
 	void showMessageBox(const string &text, const string &header, bool toggle);
 	bool connectToServer(string ipString, int port);
@@ -132,6 +131,7 @@ private:
 	void clearUserButtons();
 	void updateServerInfo();
 	void cleanup();
+	virtual void IRC_CallbackEvent(IRCEventType evt, const char* origin, const char **params, unsigned int count);
 
 };
 

source/shared_lib/include/platform/posix/ircclient.h

@@ -31,9 +31,14 @@ namespace Shared { namespace PlatformCommon {
 //	class IRCThreadThread
 // =====================================================
 
+enum IRCEventType {
+    IRC_evt_chatText = 0,
+    IRC_evt_exitThread = 1
+};
+
 class IRCCallbackInterface {
 public:
-    virtual void IRC_CallbackEvent(const char* origin, const char **params, unsigned int count) = 0;
+    virtual void IRC_CallbackEvent(IRCEventType evt, const char* origin, const char **params, unsigned int count) = 0;
 };
 
 class IRCThread : public BaseThread
@@ -51,6 +56,7 @@ protected:
     time_t lastNickListUpdate;
     std::vector<string> eventData;
 
+    Mutex mutexIRCCB;
     IRCCallbackInterface *callbackObj;
 
 public:
@@ -84,7 +90,8 @@ public:
     std::vector<string> & getCachedNickList() { return eventData; }
     void setCachedNickList(std::vector<string> &list) { eventData = list; }
 
-    IRCCallbackInterface * getCallbackObj() { return callbackObj;}
+    IRCCallbackInterface * getCallbackObj();
+    void setCallbackObj(IRCCallbackInterface *cb);
 };
 
 }}//end namespace

source/shared_lib/sources/platform/posix/ircclient.cpp

@@ -192,7 +192,7 @@ void event_channel(irc_session_t * session, const char * event, const char * ori
     IRCThread *ctx = (IRCThread *)irc_get_ctx(session);
 	if(ctx != NULL) {
         if(ctx->getCallbackObj() != NULL) {
-            ctx->getCallbackObj()->IRC_CallbackEvent(nickbuf, params, count);
+            ctx->getCallbackObj()->IRC_CallbackEvent(IRC_evt_chatText, nickbuf, params, count);
         }
 	}
 
@@ -411,6 +411,15 @@ std::vector<string> IRCThread::getNickList() {
     return nickList;
 }
 
+IRCCallbackInterface * IRCThread::getCallbackObj() {
+    MutexSafeWrapper safeMutex(&mutexIRCCB);
+    return callbackObj;
+}
+void IRCThread::setCallbackObj(IRCCallbackInterface *cb) {
+    MutexSafeWrapper safeMutex(&mutexIRCCB);
+    callbackObj=cb;
+}
+
 void IRCThread::execute() {
     {
         RunningStatusSafeWrapper runningStatus(this);
@@ -509,6 +518,9 @@ void IRCThread::execute() {
 
     // Delete ourself when the thread is done (no other actions can happen after this
     // such as the mutex which modifies the running status of this method
+    if(getCallbackObj() != NULL) {
+       getCallbackObj()->IRC_CallbackEvent(IRC_evt_exitThread, NULL, NULL, 0);
+    }
 	delete this;
 }