// This function is called when a new message is received from the plugin. // We get here when calling mPluginManager->update() in the first line of // AIFilePicker::multiplex_impl. // // Note that we can't call finish() or abort() directly in this function, // as that deletes mPluginManager and we're using the plugin manager // right now (to receive this message)! void AIFilePicker::receivePluginMessage(const LLPluginMessage &message) { std::string message_class = message.getClass(); if (message_class == LLPLUGIN_MESSAGE_CLASS_BASIC) { std::string message_name = message.getName(); if (message_name == "canceled") { LL_DEBUGS("Plugin") << "received message \"canceled\"" << LL_ENDL; set_state(AIFilePicker_canceled); } else if (message_name == "done") { LL_DEBUGS("Plugin") << "received message \"done\"" << LL_ENDL; LLSD filenames = message.getValueLLSD("filenames"); mFilenames.clear(); for(LLSD::array_iterator filename = filenames.beginArray(); filename != filenames.endArray(); ++filename) { mFilenames.push_back(*filename); } set_state(AIFilePicker_done); } else { LL_WARNS("Plugin") << "Unknown " << message_class << " class message: " << message_name << LL_ENDL; } } }
/* virtual */ void LLPluginProcessChild::receivePluginMessage(const std::string &message) { LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL; if(mBlockingRequest) { // LL_ERRS("Plugin") << "Can't send a message while already waiting on a blocking request -- aborting!" << LL_ENDL; } // Incoming message from the plugin instance bool passMessage = true; // FIXME: how should we handle queueing here? // Intercept certain base messages (responses to ones sent by this class) { // Decode this message LLPluginMessage parsed; parsed.parse(message); if(parsed.hasValue("blocking_request")) { mBlockingRequest = true; } std::string message_class = parsed.getClass(); if(message_class == "base") { std::string message_name = parsed.getName(); if(message_name == "init_response") { // The plugin has finished initializing. setState(STATE_RUNNING); // Don't pass this message up to the parent passMessage = false; LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response"); LLSD versions = parsed.getValueLLSD("versions"); new_message.setValueLLSD("versions", versions); if(parsed.hasValue("plugin_version")) { std::string plugin_version = parsed.getValue("plugin_version"); new_message.setValueLLSD("plugin_version", plugin_version); } // Let the parent know it's loaded and initialized. sendMessageToParent(new_message); } else if(message_name == "shm_remove_response") { // Don't pass this message up to the parent passMessage = false; std::string name = parsed.getValue("name"); sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); if(iter != mSharedMemoryRegions.end()) { // detach the shared memory region iter->second->detach(); // and remove it from our map mSharedMemoryRegions.erase(iter); // Finally, send the response to the parent. LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response"); message.setValue("name", name); sendMessageToParent(message); } else { LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL; } } } else if (message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL) { bool flush = false; std::string message_name = parsed.getName(); if(message_name == "shutdown") { // The plugin is finished. setState(STATE_UNLOADING); flush = true; } else if (message_name == "flush") { flush = true; passMessage = false; } if (flush) { flushMessages(); } } } if(passMessage) { LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL; writeMessageRaw(message); } while(mBlockingRequest) { // The plugin wants to block and wait for a response to this message. sleep(mSleepTime); // this will pump the message pipe and process messages if(mBlockingResponseReceived || mSocketError != APR_SUCCESS || (mMessagePipe == NULL)) { // Response has been received, or we've hit an error state. Stop waiting. mBlockingRequest = false; mBlockingResponseReceived = false; } } }
// This is the viewer process (the parent process). // // This function is called for messages that have to // be written to the plugin. // Note that LLPLUGIN_MESSAGE_CLASS_INTERNAL messages // are not sent to the plugin, but are handled here. void LLPluginProcessParent::receiveMessage(const LLPluginMessage &message) { std::string message_class = message.getClass(); if(message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL) { // internal messages should be handled here std::string message_name = message.getName(); if(message_name == "hello") { if(mState == STATE_CONNECTED) { // Plugin host has launched. Tell it which plugin to load. setState(STATE_HELLO); } else { LL_WARNS("Plugin") << "received hello message in wrong state -- bailing out" << LL_ENDL; errorState(); } } else if(message_name == "load_plugin_response") { if(mState == STATE_LOADING) { // Plugin has been loaded. mPluginVersionString = message.getValue("plugin_version"); LL_INFOS("Plugin") << "plugin version string: " << mPluginVersionString << LL_ENDL; // Check which message classes/versions the plugin supports. // TODO: check against current versions // TODO: kill plugin on major mismatches? mMessageClassVersions = message.getValueLLSD("versions"); LLSD::map_iterator iter; for(iter = mMessageClassVersions.beginMap(); iter != mMessageClassVersions.endMap(); iter++) { LL_INFOS("Plugin") << "message class: " << iter->first << " -> version: " << iter->second.asString() << LL_ENDL; } // Send initial sleep time setSleepTime(mSleepTime, true); setState(STATE_RUNNING); } else { LL_WARNS("Plugin") << "received load_plugin_response message in wrong state -- bailing out" << LL_ENDL; errorState(); } } else if(message_name == "heartbeat") { // this resets our timer. mHeartbeat.setTimerExpirySec(mPluginLockupTimeout); mCPUUsage = message.getValueReal("cpu_usage"); LL_DEBUGS("PluginHeartbeat") << "cpu usage reported as " << mCPUUsage << LL_ENDL; } else if(message_name == "shutdown") { LL_INFOS("Plugin") << "received shutdown message" << LL_ENDL; mReceivedShutdown = true; mOwner->receivedShutdown(); } else if(message_name == "shm_add_response") { // Nothing to do here. } else if(message_name == "shm_remove_response") { std::string name = message.getValue("name"); sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); if(iter != mSharedMemoryRegions.end()) { // destroy the shared memory region iter->second->destroy(); // and remove it from our map mSharedMemoryRegions.erase(iter); } } else if(message_name == "log_message") { std::string msg=message.getValue("message"); S32 level=message.getValueS32("log_level"); switch(level) { case LLPluginMessage::LOG_LEVEL_DEBUG: LL_DEBUGS("Plugin child")<<msg<<LL_ENDL; break; case LLPluginMessage::LOG_LEVEL_INFO: LL_INFOS("Plugin child")<<msg<<LL_ENDL; break; case LLPluginMessage::LOG_LEVEL_WARN: LL_WARNS("Plugin child")<<msg<<LL_ENDL; break; case LLPluginMessage::LOG_LEVEL_ERR: LL_ERRS("Plugin child")<<msg<<LL_ENDL; break; default: break; } } else { LL_WARNS("Plugin") << "Unknown internal message from child: " << message_name << LL_ENDL; } } else { if(mOwner != NULL) { mOwner->receivePluginMessage(message); } } }
/* virtual */ void LLPluginProcessChild::receivePluginMessage(const std::string &message) { LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL; // Incoming message from the plugin instance bool passMessage = true; // FIXME: how should we handle queueing here? // Intercept certain base messages (responses to ones sent by this class) { // Decode this message LLPluginMessage parsed; parsed.parse(message); std::string message_class = parsed.getClass(); if(message_class == "base") { std::string message_name = parsed.getName(); if(message_name == "init_response") { // The plugin has finished initializing. setState(STATE_RUNNING); // Don't pass this message up to the parent passMessage = false; LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response"); LLSD versions = parsed.getValueLLSD("versions"); new_message.setValueLLSD("versions", versions); if(parsed.hasValue("plugin_version")) { std::string plugin_version = parsed.getValue("plugin_version"); new_message.setValueLLSD("plugin_version", plugin_version); } // Let the parent know it's loaded and initialized. sendMessageToParent(new_message); } else if(message_name == "shm_remove_response") { // Don't pass this message up to the parent passMessage = false; std::string name = parsed.getValue("name"); sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); if(iter != mSharedMemoryRegions.end()) { // detach the shared memory region iter->second->detach(); // and remove it from our map mSharedMemoryRegions.erase(iter); // Finally, send the response to the parent. LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response"); message.setValue("name", name); sendMessageToParent(message); } else { LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL; } } } } if(passMessage) { LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL; writeMessageRaw(message); } }