AudioManagerDaemon/src/main.cpp

   1 /**
   2 * Copyright (C) 2011, BMW AG
   3 *
   4 * GeniviAudioMananger AudioManagerDaemon
   5 *
   6 * \file main.cpp
   7 *
   8 * \date 20-Oct-2011 3:42:04 PM
   9 * \author Christian Mueller (christian.ei.mueller@bmw.de)
  10 *
  11 * \section License
  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
  14 *
  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.
  22 *
  23 */
  24
  25 /**
  26  * Please make sure to have read the documentation on genivi.org!
  27  */
  28
  29 //todo: make real daemon out of it- systemd conform
  30 //todo: versioning of PluginInterfaces on linux level (.symver stuff)
  31 //todo: all communication like all plugins loaded etc...
  32 //todo: seperate documentation of test from normal project
  33 //todo: check the startup sequence. Dbus shall be activated last...
  34 //todo: there is a bug in the visible flags of sinks and sources. fix it.
  35 //todo: make sure that iterators have a fixed end to prevent crashed while adding vectors while iterating on critical vectors
  36 //todo: make sure all configurations are tested
  37
  38 #include <config.h>
  39 #include <SocketHandler.h>
  40 #ifdef WITH_DBUS_WRAPPER
  41 #include <dbus/DBusWrapper.h>
  42 #endif
  43 #include "DatabaseHandler.h"
  44 #include "ControlSender.h"
  45 #include "CommandSender.h"
  46 #include "RoutingSender.h"
  47 #include "RoutingReceiver.h"
  48 #include "CommandReceiver.h"
  49 #include "ControlReceiver.h"
  50 #include "DatabaseObserver.h"
  51 #include "TelnetServer.h"
  52 #include <sys/resource.h>
  53 #include <sys/stat.h>
  54 #include <unistd.h>
  55 #include <stdlib.h>
  56 #include <cstdlib>
  57 #include <assert.h>
  58 #include <fcntl.h>
  59 #include <signal.h>
  60 #include <string.h>
  61 #include <stdio.h>
  62
  63 #include <dlt/dlt.h>
  64
  65 DLT_DECLARE_CONTEXT(AudioManager)
  66
  67 using namespace am;
  68
  69 const char* USAGE_DESCRIPTION = "Usage:\tAudioManagerDaemon [options]\n"
  70                                 "options:\t\n"
  71                                 "\t-h: print this message\t\n"
  72                                                                 "\t-i: info about current settings \t\n"
  73                                                                 "\t-v: print version\t\n"
  74                                                                 "\t-d: daemonize AudioManager \t\n"
  75                                                                 "\t-p<path> path for sqlite database (default is in memory)\t\n"
  76                                                                 "\t-t<port> port for telnetconnection\t\n"
  77                                                                 "\t-m<max> number of max telnetconnections\t\n"
  78                                                                 "\t-c<Name> use controllerPlugin <Name> (full path with .so ending)\t\n"
  79                                                                 "\t-l<Name> replace command plugin directory with <Name> (full path)\t\n"
  80                                                                 "\t-r<Name> replace routing plugin directory with <Name> (full path)\t\n"
  81                                                                 "\t-L<Name> add command plugin directory with <Name> (full path)\t\n"
  82                                                                 "\t-R<Name> add routing plugin directory with <Name> (full path)\t\n";
  83
  84 std::string controllerPlugin=std::string(CONTROLLER_PLUGIN);
  85 std::vector<std::string> listCommandPluginDirs;
  86 std::vector<std::string> listRoutingPluginDirs;
  87 std::string databasePath=std::string(":memory:");
  88 unsigned int telnetport=DEFAULT_TELNETPORT;
  89 unsigned int maxConnections=MAX_TELNETCONNECTIONS;
  90
  91 void daemonize ()
  92 {
  93         umask(0);
  94         std::string dir="/";
  95
  96         rlimit rl;
  97         if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
  98         {
  99                 DLT_LOG(AudioManager,DLT_LOG_ERROR, DLT_STRING("can't get file limit "));
 100         }
 101
 102         pid_t pid;
 103         if ((pid = fork()) < 0)
 104         {
 105                 DLT_LOG(AudioManager,DLT_LOG_ERROR, DLT_STRING("cannot fork!"));
 106         }
 107         else if (pid != 0)
 108         {
 109           exit(0);
 110         }
 111
 112         setsid();
 113
 114         if (!dir.empty() && chdir(dir.c_str()) < 0)
 115         {
 116                 DLT_LOG(AudioManager,DLT_LOG_ERROR, DLT_STRING("couldn't chdir to the new directory"));
 117         }
 118
 119         if (rl.rlim_max == RLIM_INFINITY)
 120         {
 121           rl.rlim_max = 1024;
 122         }
 123
 124
 125         for (unsigned int i = 0; i < rl.rlim_max; i++)
 126         {
 127           close(i);
 128         }
 129
 130         int fd0 = open("/dev/null", O_RDONLY);
 131         int fd1 = open("/dev/null",O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR);
 132         int fd2 = open("/dev/null", O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR);
 133
 134         if (fd0 != STDIN_FILENO || fd1 != STDOUT_FILENO || fd2 != STDERR_FILENO)
 135         {
 136                 DLT_LOG(AudioManager,DLT_LOG_ERROR, DLT_STRING("new standard file descriptors were not opened"));
 137         }
 138 }
 139
 140 void parseCommandLine(int argc, char **argv)
 141 {
 142         while (optind < argc)
 143         {
 144                 int option =  getopt (argc, argv, "h::v::c::l::r::L::R::d::t::m::i::p::");
 145
 146                 switch (option)
 147                 {
 148                 case 'i':
 149                         printf("Current settings:\n");
 150                         printf("\tAudioManagerDaemon Version:\t\t%s\n",DAEMONVERSION);
 151                         printf("\tTelnet portNumber:\t\t\t%i\n",telnetport);
 152                         printf("\tTelnet maxConnections:\t\t\t%i\n",maxConnections);
 153                         printf("\tSqlite Database path:\t\t\t%s\n",databasePath.c_str());
 154                         printf("\tControllerPlugin: \t\t\t%s\n",controllerPlugin.c_str());
 155                         printf("\tDirectory of CommandPlugins: \t\t%s\n",listCommandPluginDirs.front().c_str());
 156                         printf("\tDirectory of RoutingPlugins: \t\t%s\n",listRoutingPluginDirs.front().c_str());
 157                         exit(0);
 158                         break;
 159                 case 't':
 160                         assert(atoi(optarg)!=0);
 161                         telnetport=atoi(optarg);
 162                         break;
 163                 case 'm':
 164                         assert(atoi(optarg)!=0);
 165                         maxConnections=atoi(optarg);
 166                         break;
 167                 case 'p':
 168                         assert(!controllerPlugin.empty());
 169                         databasePath=std::string(optarg);
 170                         break;
 171                 case 'd':
 172                         daemonize();
 173                         break;
 174                 case 'l':
 175                         listCommandPluginDirs.clear();
 176                         listCommandPluginDirs.push_back(std::string(optarg));
 177                         break;
 178                 case 'r':
 179                         listRoutingPluginDirs.clear();
 180                         listRoutingPluginDirs.push_back(std::string(optarg));
 181                         break;
 182                 case 'L':
 183                         listCommandPluginDirs.push_back(std::string(optarg));
 184                         break;
 185                 case 'R':
 186                         listRoutingPluginDirs.push_back(std::string(optarg));
 187                         break;
 188                 case 'c':
 189                         controllerPlugin=std::string(optarg);
 190                         assert(!controllerPlugin.empty());
 191                         assert(controllerPlugin.find(".so")!=std::string::npos);
 192                         break;
 193                 case 'v':
 194                         printf("AudioManagerDaemon Version: %s\n",DAEMONVERSION);
 195                         exit(-1);
 196                         break;
 197                 case 'h':
 198         default:
 199             printf("AudioManagerDaemon Version: %s\n",DAEMONVERSION);
 200             puts(USAGE_DESCRIPTION);
 201             exit(-1);
 202                 }
 203         }
 204 }
 205
 206 static void signalHandler (int sig, siginfo_t *siginfo, void *context)
 207 {
 208         (void)sig;
 209         (void)siginfo;
 210         (void)context;
 211         DLT_LOG(AudioManager, DLT_LOG_ERROR, DLT_STRING("signal handler was called, exit now..."));
 212         gDispatchDone=1;
 213         //todo: maually fire the mainloop
 214         //todo: ifdef no sockethandler
 215         exit(1);
 216 }
 217
 218
 219 int main(int argc, char *argv[])
 220 {
 221         DLT_REGISTER_APP("AudioManagerDeamon","AudioManagerDeamon");
 222         DLT_REGISTER_CONTEXT(AudioManager,"Main","Main Context");
 223         DLT_LOG(AudioManager,DLT_LOG_INFO, DLT_STRING("The AudioManager is started, "), DLT_STRING(DAEMONVERSION));
 224
 225         listCommandPluginDirs.push_back(std::string(DEFAULT_PLUGIN_COMMAND_DIR));
 226         listRoutingPluginDirs.push_back(std::string(DEFAULT_PLUGIN_ROUTING_DIR));
 227
 228         //parse the commandline options
 229         parseCommandLine(argc, (char**) argv);
 230
 231         //now the signal handler:
 232         struct sigaction signalAction;
 233         memset (&signalAction, '\0', sizeof(signalAction));
 234         signalAction.sa_sigaction = &signalHandler;
 235         signalAction.sa_flags = SA_SIGINFO;
 236         sigaction(SIGINT, &signalAction, NULL);
 237         sigaction(SIGQUIT, &signalAction, NULL);
 238         sigaction(SIGTERM, &signalAction, NULL);
 239         sigaction(SIGHUP, &signalAction, NULL);
 240         sigaction(SIGQUIT, &signalAction, NULL);
 241
 242         struct sigaction signalChildAction;
 243         memset (&signalChildAction, '\0', sizeof(signalChildAction));
 244         signalChildAction.sa_flags = SA_NOCLDWAIT;
 245         sigaction (SIGCHLD, &signalChildAction, NULL);
 246
 247         //Instantiate all classes. Keep in same order !
 248 #ifdef WITH_SOCKETHANDLER_LOOP
 249         SocketHandler iSocketHandler;
 250 #endif
 251
 252 #ifdef WITH_DBUS_WRAPPER
 253 #ifdef WITH_SOCKETHANDLER_LOOP
 254         DBusWrapper iDBusWrapper(&iSocketHandler);
 255 #else /*WITH_SOCKETHANDLER_LOOP*/
 256         DBusWrapper iDBusWrapper;
 257 #endif /*WITH_SOCKETHANDLER_LOOP*/
 258 #endif /*WITH_DBUS_WRAPPER */
 259
 260         DatabaseHandler iDatabaseHandler(databasePath);
 261         RoutingSender iRoutingSender(listRoutingPluginDirs);
 262         CommandSender iCommandSender(listCommandPluginDirs);
 263         ControlSender iControlSender(controllerPlugin);
 264
 265 #ifdef WITH_DBUS_WRAPPER
 266 #ifdef WITH_SOCKETHANDLER_LOOP
 267         CommandReceiver iCommandReceiver(&iDatabaseHandler,&iControlSender,&iSocketHandler,&iDBusWrapper);
 268         RoutingReceiver iRoutingReceiver(&iDatabaseHandler,&iRoutingSender,&iControlSender,&iSocketHandler,&iDBusWrapper);
 269         ControlReceiver iControlReceiver(&iDatabaseHandler,&iRoutingSender,&iCommandSender,&iSocketHandler);
 270 #ifdef WITH_TELNET
 271         TelnetServer iTelnetServer(&iSocketHandler,&iCommandSender,&iCommandReceiver,&iRoutingSender,&iRoutingReceiver,&iControlSender,&iControlReceiver,&iDatabaseHandler,telnetport,maxConnections);
 272 #endif
 273 #else /*WITH_SOCKETHANDLER_LOOP */
 274         CommandReceiver iCommandReceiver(&iDatabaseHandler,&iControlSender,&iDBusWrapper);
 275         RoutingReceiver iRoutingReceiver(&iDatabaseHandler,&iRoutingSender,&iControlSender,&iDBusWrapper);
 276         ControlReceiver iControlReceiver(&iDatabaseHandler,&iRoutingSender,&iCommandSender);
 277 #endif /*WITH_SOCKETHANDLER_LOOP*/
 278 #else /*WITH_DBUS_WRAPPER*/
 279         CommandReceiver iCommandReceiver(&iDatabaseHandler,&iControlSender,&iSocketHandler);
 280         RoutingReceiver iRoutingReceiver(&iDatabaseHandler,&iRoutingSender,&iControlSender,&iSocketHandler);
 281         ControlReceiver iControlReceiver(&iDatabaseHandler,&iRoutingSender,&iCommandSender,&iSocketHandler);
 282 #ifdef WITH_TELNET
 283         TelnetServer iTelnetServer(&iSocketHandler,telnetport,maxConnections);
 284 #endif
 285 #endif /*WITH_DBUS_WRAPPER*/
 286
 287 #ifdef WITH_TELNET
 288         DatabaseObserver iObserver(&iCommandSender, &iRoutingSender,&iTelnetServer);
 289 #else
 290         DatabaseObserver iObserver(&iCommandSender, &iRoutingSender);
 291 #endif
 292
 293
 294         //since the plugins have been loaded by the *Senders before, we can tell the Controller this:
 295         iControlSender.hookAllPluginsLoaded();
 296
 297         //the controller should startup the interfaces - this is just for testing
 298         iCommandSender.startupInterface(&iCommandReceiver);
 299         iRoutingSender.startupRoutingInterface(&iRoutingReceiver);
 300         iRoutingSender.routingInterfacesReady();
 301
 302 #ifdef WITH_SOCKETHANDLER_LOOP
 303         iSocketHandler.start_listenting();
 304 #endif /*WITH_SOCKETHANDLER_LOOP*/
 305
 306 #ifdef WITH_DBUS_WRAPPER
 307 #ifdef WITH_SIMPLEDBUS_LOOP
 308         iDBusWrapper.dbusMainLoop();
 309 #endif/*WITH_SIMPLEDBUS_LOOP*/
 310 #endif /*WITH_DBUS_WRAPPER*/
 311
 312 exit(0);
 313
 314 }
 315
 316
 317
 318