2 * Copyright (C) 2011, BMW AG
4 * GeniviAudioMananger AudioManagerDaemon
6 * \file SocketHandler.cpp
8 * \date 20-Oct-2011 3:42:04 PM
9 * \author Christian Mueller (christian.ei.mueller@bmw.de)
12 * GNU Lesser General Public License, version 2.1, with special exception (GENIVI clause)
13 * Copyright (C) 2011, BMW AG Christian Mueller Christian.ei.mueller@bmw.de
15 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License, version 2.1, as published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License, version 2.1, for more details.
17 * You should have received a copy of the GNU Lesser General Public License, version 2.1, along with this program; if not, see <http://www.gnu.org/licenses/lgpl-2.1.html>.
18 * Note that the copyright holders assume that the GNU Lesser General Public License, version 2.1, may also be applicable to programs even in cases in which the program is not a library in the technical sense.
19 * Linking AudioManager statically or dynamically with other modules is making a combined work based on AudioManager. You may license such other modules under the GNU Lesser General Public License, version 2.1. If you do not want to license your linked modules under the GNU Lesser General Public License, version 2.1, you may use the program under the following exception.
20 * As a special exception, the copyright holders of AudioManager give you permission to combine AudioManager with software programs or libraries that are released under any license unless such a combination is not permitted by the license of such a software program or library. You may copy and distribute such a system following the terms of the GNU Lesser General Public License, version 2.1, including this special exception, for AudioManager and the licenses of the other code concerned.
21 * Note that people who make modified versions of AudioManager are not obligated to grant this special exception for their modified versions; it is their choice whether to do so. The GNU Lesser General Public License, version 2.1, gives permission to release a modified version without this exception; this exception also makes it possible to release a modified version which carries forward this exception.
25 #include <dbus/DBusWrapper.h>
26 #include <SocketHandler.h>
37 DLT_IMPORT_CONTEXT(AudioManager)
39 #define ROOT_INTROSPECT_XML \
40 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
42 "<interface name='org.AudioManager.freedesktop.DBus.Introspectable'>" \
43 "<method name='Introspect'>" \
44 " <arg name='xml_data' type='s' direction='out'/>" \
48 DBusWrapper* DBusWrapper::mReference = NULL;
50 DBusWrapper::DBusWrapper() :
51 pDbusDispatchCallback(this, &DBusWrapper::dbusDispatchCallback), //
52 pDbusFireCallback(this, &DBusWrapper::dbusFireCallback), //
53 pDbusCheckCallback(this, &DBusWrapper::dbusCheckCallback), //
54 pDbusTimerCallback(this, &DBusWrapper::dbusTimerCallback), //
55 mDbusConnection(0), //
58 mListTimerhandlePointer()
60 dbus_error_init(&mDBusError);
61 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::DBusWrapper Opening DBus connection"));
62 mDbusConnection = dbus_bus_get(DBUS_BUS_SESSION, &mDBusError);
63 if (dbus_error_is_set(&mDBusError))
65 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Error while getting the DBus"));
66 dbus_error_free(&mDBusError);
68 if (NULL == mDbusConnection)
70 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper DBus Connection is null"));
73 //first, we are old enought to live longer then the connection:
74 dbus_connection_set_exit_on_disconnect(mDbusConnection, FALSE);
76 mObjectPathVTable.message_function = DBusWrapper::cbRootIntrospection;
77 dbus_connection_register_object_path(mDbusConnection, DBUS_SERVICE_OBJECT_PATH, &mObjectPathVTable, this);
78 int ret = dbus_bus_request_name(mDbusConnection, DBUS_SERVICE_PREFIX, DBUS_NAME_FLAG_DO_NOT_QUEUE, &mDBusError);
79 if (dbus_error_is_set(&mDBusError))
81 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Name Error"), DLT_STRING(mDBusError.message));
82 dbus_error_free(&mDBusError);
84 if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret)
86 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Wrapper is not the Primary Owner"), DLT_INT(ret));
91 DBusWrapper::DBusWrapper(SocketHandler* socketHandler) :
92 pDbusDispatchCallback(this, &DBusWrapper::dbusDispatchCallback), //
93 pDbusFireCallback(this, &DBusWrapper::dbusFireCallback), //
94 pDbusCheckCallback(this, &DBusWrapper::dbusCheckCallback), //
95 pDbusTimerCallback(this, &DBusWrapper::dbusTimerCallback), //
96 mDbusConnection(0), //
99 mListTimerhandlePointer(), //
100 mSocketHandler(socketHandler)
102 assert(mSocketHandler!=0);
104 dbus_error_init(&mDBusError);
105 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::DBusWrapper Opening DBus connection"));
106 mDbusConnection = dbus_bus_get(DBUS_BUS_SESSION, &mDBusError);
107 if (dbus_error_is_set(&mDBusError))
109 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Error while getting the DBus"));
110 dbus_error_free(&mDBusError);
112 if (NULL == mDbusConnection)
114 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper DBus Connection is null"));
117 //then we need to adopt the dbus to our mainloop:
118 //first, we are old enought to live longer then the connection:
119 dbus_connection_set_exit_on_disconnect(mDbusConnection, FALSE);
121 //we do not need the manual dispatching, since it is not allowed to call from a different thread. So leave it uncommented:
122 //dbus_connection_set_dispatch_status_function
124 //add watch functions:
125 dbus_bool_t watch = dbus_connection_set_watch_functions(mDbusConnection, addWatch, removeWatch, toogleWatch, this, NULL);
128 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Registering of watch functions failed"));
131 //add timer functions:
132 dbus_bool_t timer = dbus_connection_set_timeout_functions(mDbusConnection, addTimeout, removeTimeout, toggleTimeout, this, NULL);
135 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Registering of timer functions failed"));
138 //register callback for Introspectio
139 mObjectPathVTable.message_function = DBusWrapper::cbRootIntrospection;
140 dbus_connection_register_object_path(mDbusConnection, DBUS_SERVICE_OBJECT_PATH, &mObjectPathVTable, this);
141 int ret = dbus_bus_request_name(mDbusConnection, DBUS_SERVICE_PREFIX, DBUS_NAME_FLAG_DO_NOT_QUEUE, &mDBusError);
142 if (dbus_error_is_set(&mDBusError))
144 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Name Error"), DLT_STRING(mDBusError.message));
145 dbus_error_free(&mDBusError);
147 if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret)
149 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::DBusWrapper Wrapper is not the Primary Owner"), DLT_INT(ret));
154 DBusWrapper::~DBusWrapper()
156 //close the connection again
157 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::~DBusWrapper Closing DBus connection"));
158 dbus_connection_unref(mDbusConnection);
160 //clean up all timerhandles we created but did not delete before
161 std::vector<sh_timerHandle_t*>::iterator it = mListTimerhandlePointer.begin();
162 for (; it != mListTimerhandlePointer.end(); ++it)
168 void DBusWrapper::registerCallback(const DBusObjectPathVTable* vtable, const std::string& path, void* userdata)
170 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::~registerCallback register callback:"), DLT_STRING(path.c_str()));
172 std::string completePath = std::string(DBUS_SERVICE_OBJECT_PATH) + "/" + path;
173 dbus_error_init(&mDBusError);
174 mDbusConnection = dbus_bus_get(DBUS_BUS_SESSION, &mDBusError);
175 dbus_connection_register_object_path(mDbusConnection, completePath.c_str(), vtable, userdata);
176 if (dbus_error_is_set(&mDBusError))
178 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::registerCallack error: "), DLT_STRING(mDBusError.message));
179 dbus_error_free(&mDBusError);
181 mNodesList.push_back(path);
184 DBusHandlerResult DBusWrapper::cbRootIntrospection(DBusConnection *conn, DBusMessage *msg, void *reference)
186 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::~cbRootIntrospection called:"));
188 mReference = (DBusWrapper*) reference;
189 std::list<std::string> nodesList = mReference->mNodesList;
191 DBusMessageIter args;
192 dbus_uint32_t serial = 0;
193 if (dbus_message_is_method_call(msg, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
195 std::list<std::string>::iterator nodeIter = nodesList.begin();
196 const char *xml = ROOT_INTROSPECT_XML;
197 std::stringstream introspect;
198 introspect << std::string(xml);
199 for (; nodeIter != nodesList.end(); ++nodeIter)
201 introspect << "<node name='" << nodeIter->c_str() << "'/>";
203 introspect << "</node>";
205 reply = dbus_message_new_method_return(msg);
206 std::string s = introspect.str();
207 const char* string = s.c_str();
209 // add the arguments to the reply
210 dbus_message_iter_init_append(reply, &args);
211 if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &string))
213 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::~cbRootIntrospection DBUS Out Of Memory!"));
216 // send the reply && flush the connection
217 if (!dbus_connection_send(conn, reply, &serial))
219 DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::~cbRootIntrospection DBUS Out Of Memory!"));
221 dbus_connection_flush(conn);
223 dbus_message_unref(reply);
225 return DBUS_HANDLER_RESULT_HANDLED;
229 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
233 void DBusWrapper::dbusMainLoop()
235 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::dbusMainLoop Entering MainLoop"));
237 while (dbus_connection_read_write_dispatch(mDbusConnection, -1))
243 void DBusWrapper::getDBusConnection(DBusConnection *& connection) const
245 connection = mDbusConnection;
248 dbus_bool_t DBusWrapper::addWatch(DBusWatch *watch, void *userData)
250 mReference = (DBusWrapper*) userData;
251 assert(mReference!=0);
252 return mReference->addWatchDelegate(watch, userData);
255 dbus_bool_t DBusWrapper::addWatchDelegate(DBusWatch * watch, void* userData)
258 sh_pollHandle_t handle = 0;
259 uint flags = dbus_watch_get_flags(watch);
261 /* no watch flags for disabled watches */
262 if (dbus_watch_get_enabled(watch))
264 if (flags & DBUS_WATCH_READABLE) event |= POLLIN;
265 if (flags & DBUS_WATCH_WRITABLE) event |= POLLOUT;
268 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::addWatchDelegate entered new watch, fd="), DLT_INT(dbus_watch_get_unix_fd(watch)), DLT_STRING("event flag="), DLT_INT(event));
269 am_Error_e error = mSocketHandler->addFDPoll(dbus_watch_get_unix_fd(watch), event, NULL, &pDbusFireCallback, &pDbusCheckCallback, &pDbusDispatchCallback, watch, handle);
271 //if everything is alright, add the watch and the handle to our map so we know this relationship
272 if (error == E_OK && handle != 0)
274 mMapHandleWatch.insert(std::make_pair(watch, handle));
276 }DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("DBusWrapper::addWatchDelegate entering watch failed"));
279 void DBusWrapper::removeWatch(DBusWatch *watch, void *userData)
281 mReference = (DBusWrapper*) userData;
282 assert(mReference!=0);
283 mReference->removeWatchDelegate(watch, userData);
286 void DBusWrapper::removeWatchDelegate(DBusWatch *watch, void *userData)
288 std::map<DBusWatch*, sh_pollHandle_t>::iterator iterator = mMapHandleWatch.begin();
289 iterator = mMapHandleWatch.find(watch);
290 if (iterator != mMapHandleWatch.end()) mSocketHandler->removeFDPoll(iterator->second);
291 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::removeWatch removed watch with handle"), DLT_INT(iterator->second));
292 mMapHandleWatch.erase(iterator);
295 void DBusWrapper::toogleWatch(DBusWatch *watch, void *userData)
297 mReference = (DBusWrapper*) userData;
298 assert(mReference!=0);
299 mReference->toogleWatchDelegate(watch, userData);
302 void DBusWrapper::toogleWatchDelegate(DBusWatch *watch, void *userData)
305 int watchFD = dbus_watch_get_unix_fd(watch);
306 uint flags = dbus_watch_get_flags(watch);
307 /* no watch flags for disabled watches */
308 if (dbus_watch_get_enabled(watch))
310 if (flags & DBUS_WATCH_READABLE) event |= POLLIN;
311 if (flags & DBUS_WATCH_WRITABLE) event |= POLLOUT;
313 std::map<DBusWatch*, sh_pollHandle_t>::iterator iterator = mMapHandleWatch.begin();
314 iterator = mMapHandleWatch.find(watch);
315 if (iterator != mMapHandleWatch.end()) mSocketHandler->updateEventFlags(iterator->second, event);
316 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::toogleWatchDelegate watch was toggeled"));
319 dbus_bool_t DBusWrapper::addTimeout(DBusTimeout *timeout, void* userData)
321 mReference = (DBusWrapper*) userData;
322 assert(mReference!=0);
323 return mReference->addTimeoutDelegate(timeout, userData);
326 dbus_bool_t DBusWrapper::addTimeoutDelegate(DBusTimeout *timeout, void* userData)
328 if (!dbus_timeout_get_enabled(timeout)) return false;
330 //calculate the timeout in timeval
331 timespec pollTimeout;
332 int localTimeout = dbus_timeout_get_interval(timeout);
333 pollTimeout.tv_sec = localTimeout / 1000;
334 pollTimeout.tv_nsec = (localTimeout % 1000) * 1000000;
336 //prepare handle and callback. new is eval, but there is no other choice because we need the pointer!
337 sh_timerHandle_t* handle = new sh_timerHandle_t;
338 mListTimerhandlePointer.push_back(handle);
339 shTimerCallBack* buffer = &pDbusTimerCallback;
341 //add the timer to the pollLoop
342 mSocketHandler->addTimer(pollTimeout, buffer, *handle, timeout);
344 //save the handle with dbus context
345 dbus_timeout_set_data(timeout, handle, NULL);
347 //save timeout in Socket context
349 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::addTimeoutDelegate a timeout was added"));
353 void DBusWrapper::removeTimeout(DBusTimeout *timeout, void* userData)
355 mReference = (DBusWrapper*) userData;
356 assert(mReference!=0);
357 mReference->removeTimeoutDelegate(timeout, userData);
360 void DBusWrapper::removeTimeoutDelegate(DBusTimeout *timeout, void* userData)
362 //get the pointer to the handle and remove the timer
363 sh_timerHandle_t* handle = (sh_timerHandle_t*) dbus_timeout_get_data(timeout);
364 mSocketHandler->removeTimer(*handle);
366 //now go throught the timerlist and remove the pointer, free memory
367 std::vector<sh_timerHandle_t*>::iterator it = mListTimerhandlePointer.begin();
368 for (; it != mListTimerhandlePointer.end(); ++it)
372 mListTimerhandlePointer.erase(it);
377 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::removeTimeoutDelegate a timeout was removed"));
380 void DBusWrapper::toggleTimeout(DBusTimeout *timeout, void* userData)
382 mReference = (DBusWrapper*) userData;
383 assert(mReference!=0);
384 mReference->toggleTimeoutDelegate(timeout, userData);
387 bool am::DBusWrapper::dbusDispatchCallback(const sh_pollHandle_t handle, void *userData)
389 bool returnVal = true;
390 dbus_connection_ref(mDbusConnection);
391 if (dbus_connection_dispatch(mDbusConnection) == DBUS_DISPATCH_COMPLETE) returnVal = false;
392 dbus_connection_unref(mDbusConnection);
393 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::dbusDispatchCallback was called"));
397 bool am::DBusWrapper::dbusCheckCallback(const sh_pollHandle_t handle, void *userData)
399 bool returnVal = false;
400 dbus_connection_ref(mDbusConnection);
401 if (dbus_connection_get_dispatch_status(mDbusConnection) == DBUS_DISPATCH_DATA_REMAINS) returnVal = true;
402 dbus_connection_unref(mDbusConnection);
403 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::dbusCheckCallback was called"));
407 void am::DBusWrapper::dbusFireCallback(const pollfd pollfd, const sh_pollHandle_t handle, void *userData)
409 assert(userData!=NULL);
412 if (pollfd.revents & POLLIN) flags |= DBUS_WATCH_READABLE;
413 if (pollfd.revents & POLLOUT) flags |= DBUS_WATCH_WRITABLE;
414 if (pollfd.revents & POLLHUP) flags |= DBUS_WATCH_HANGUP;
415 if (pollfd.revents & POLLERR) flags |= DBUS_WATCH_ERROR;
417 DBusWatch *watch = (DBusWatch*) userData;
419 dbus_connection_ref(mDbusConnection);
420 bool ok = dbus_watch_handle(watch, flags);
421 dbus_connection_unref(mDbusConnection);
422 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::dbusFireCallback was called"));
425 void DBusWrapper::toggleTimeoutDelegate(DBusTimeout *timeout, void* userData)
427 //get the pointer to the handle and remove the timer
428 sh_timerHandle_t* handle = (sh_timerHandle_t*) dbus_timeout_get_data(timeout);
431 if (dbus_timeout_get_enabled(timeout))
433 //calculate the timeout in timeval
434 timespec pollTimeout;
435 int localTimeout = dbus_timeout_get_interval(timeout);
436 pollTimeout.tv_sec = localTimeout / 1000;
437 pollTimeout.tv_nsec = (localTimeout % 1000) * 1000000;
438 mSocketHandler->restartTimer(*handle, pollTimeout);
442 mSocketHandler->stopTimer(*handle);
443 }DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::toggleTimeoutDelegate was called"));
446 void DBusWrapper::dbusTimerCallback(sh_timerHandle_t handle, void *userData)
448 assert(userData!=NULL);
449 if (dbus_timeout_get_enabled((DBusTimeout*) userData))
454 mSocketHandler->restartTimer(handle, ts);
456 dbus_timeout_handle((DBusTimeout*) userData);
457 DLT_LOG(AudioManager, DLT_LOG_INFO, DLT_STRING("DBusWrapper::dbusTimerCallback was called"));