src/main.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <unistd.h>
  30 #include <string.h>
  31 #if !defined TIZEN_EXT
  32 #include <signal.h>
  33 #include <sys/signalfd.h>
  34 #endif
  35 #include <getopt.h>
  36 #include <sys/stat.h>
  37 #include <net/if.h>
  38
  39 #include <gdbus.h>
  40
  41 #ifdef HAVE_CAPNG
  42 #include <cap-ng.h>
  43 #endif
  44
  45 #include "connman.h"
  46
  47 static struct {
  48         connman_bool_t bg_scan;
  49         connman_bool_t single_connection;
  50 } connman_settings  = {
  51         .bg_scan = TRUE,
  52         .single_connection = FALSE,
  53 };
  54
  55 static GKeyFile *load_config(const char *file)
  56 {
  57         GError *err = NULL;
  58         GKeyFile *keyfile;
  59
  60         keyfile = g_key_file_new();
  61
  62         g_key_file_set_list_separator(keyfile, ',');
  63
  64         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  65                 if (err->code != G_FILE_ERROR_NOENT) {
  66                         connman_error("Parsing %s failed: %s", file,
  67                                                                 err->message);
  68                 }
  69
  70                 g_error_free(err);
  71                 g_key_file_free(keyfile);
  72                 return NULL;
  73         }
  74
  75         return keyfile;
  76 }
  77
  78 static void parse_config(GKeyFile *config)
  79 {
  80         GError *error = NULL;
  81         gboolean boolean;
  82
  83         if (config == NULL)
  84                 return;
  85
  86         DBG("parsing main.conf");
  87
  88         boolean = g_key_file_get_boolean(config, "General",
  89                                                 "BackgroundScanning", &error);
  90         if (error == NULL)
  91                 connman_settings.bg_scan = boolean;
  92
  93         g_clear_error(&error);
  94
  95         boolean = g_key_file_get_boolean(config, "General",
  96                         "SingleConnection", &error);
  97         if (error == NULL)
  98                 connman_settings.single_connection = boolean;
  99
 100         g_clear_error(&error);
 101 }
 102
 103 static GMainLoop *main_loop = NULL;
 104
 105 #if !defined TIZEN_EXT
 106 static unsigned int __terminated = 0;
 107
 108 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 109                                                         gpointer user_data)
 110 {
 111         struct signalfd_siginfo si;
 112         ssize_t result;
 113         int fd;
 114
 115         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 116                 return FALSE;
 117
 118         fd = g_io_channel_unix_get_fd(channel);
 119
 120         result = read(fd, &si, sizeof(si));
 121         if (result != sizeof(si))
 122                 return FALSE;
 123
 124         switch (si.ssi_signo) {
 125         case SIGINT:
 126         case SIGTERM:
 127                 if (__terminated == 0) {
 128                         connman_info("Terminating");
 129                         g_main_loop_quit(main_loop);
 130                 }
 131
 132                 __terminated = 1;
 133                 break;
 134         }
 135
 136         return TRUE;
 137 }
 138
 139 static guint setup_signalfd(void)
 140 {
 141         GIOChannel *channel;
 142         guint source;
 143         sigset_t mask;
 144         int fd;
 145
 146         sigemptyset(&mask);
 147         sigaddset(&mask, SIGINT);
 148         sigaddset(&mask, SIGTERM);
 149
 150         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 151                 perror("Failed to set signal mask");
 152                 return 0;
 153         }
 154
 155         fd = signalfd(-1, &mask, 0);
 156         if (fd < 0) {
 157                 perror("Failed to create signal descriptor");
 158                 return 0;
 159         }
 160
 161         channel = g_io_channel_unix_new(fd);
 162
 163         g_io_channel_set_close_on_unref(channel, TRUE);
 164         g_io_channel_set_encoding(channel, NULL, NULL);
 165         g_io_channel_set_buffered(channel, FALSE);
 166
 167         source = g_io_add_watch(channel,
 168                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 169                                 signal_handler, NULL);
 170
 171         g_io_channel_unref(channel);
 172
 173         return source;
 174 }
 175 #endif
 176
 177 static void disconnect_callback(DBusConnection *conn, void *user_data)
 178 {
 179         connman_error("D-Bus disconnect");
 180
 181         g_main_loop_quit(main_loop);
 182 }
 183
 184 static gchar *option_debug = NULL;
 185 static gchar *option_device = NULL;
 186 static gchar *option_plugin = NULL;
 187 static gchar *option_nodevice = NULL;
 188 static gchar *option_noplugin = NULL;
 189 static gchar *option_wifi = NULL;
 190 static gboolean option_detach = TRUE;
 191 static gboolean option_dnsproxy = TRUE;
 192 static gboolean option_compat = FALSE;
 193 static gboolean option_version = FALSE;
 194
 195 static gboolean parse_debug(const char *key, const char *value,
 196                                         gpointer user_data, GError **error)
 197 {
 198         if (value)
 199                 option_debug = g_strdup(value);
 200         else
 201                 option_debug = g_strdup("*");
 202
 203         return TRUE;
 204 }
 205
 206 static GOptionEntry options[] = {
 207         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 208                                 G_OPTION_ARG_CALLBACK, parse_debug,
 209                                 "Specify debug options to enable", "DEBUG" },
 210         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 211                         "Specify networking device or interface", "DEV" },
 212         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 213                         "Specify networking interface to ignore", "DEV" },
 214         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 215                                 "Specify plugins to load", "NAME,..." },
 216         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 217                                 "Specify plugins not to load", "NAME,..." },
 218         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 219                                 "Specify driver for WiFi/Supplicant", "NAME" },
 220         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 221                                 G_OPTION_ARG_NONE, &option_detach,
 222                                 "Don't fork daemon to background" },
 223         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 224                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 225                                 "Don't enable DNS Proxy" },
 226         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 227                                 "(obsolete)" },
 228         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 229                                 "Show version information and exit" },
 230         { NULL },
 231 };
 232
 233 const char *connman_option_get_string(const char *key)
 234 {
 235         if (g_strcmp0(key, "wifi") == 0) {
 236                 if (option_wifi == NULL)
 237                         return "nl80211,wext";
 238                 else
 239                         return option_wifi;
 240         }
 241
 242         return NULL;
 243 }
 244
 245 connman_bool_t connman_setting_get_bool(const char *key)
 246 {
 247         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 248                 return connman_settings.bg_scan;
 249
 250         if (g_str_equal(key, "SingleConnection") == TRUE)
 251                 return connman_settings.single_connection;
 252
 253         return FALSE;
 254 }
 255
 256 int main(int argc, char *argv[])
 257 {
 258         GOptionContext *context;
 259         GError *error = NULL;
 260         DBusConnection *conn;
 261         DBusError err;
 262         GKeyFile *config;
 263 #if !defined TIZEN_EXT
 264         guint signal;
 265 #endif
 266
 267 #ifdef HAVE_CAPNG
 268         /* Drop capabilities */
 269 #endif
 270
 271 #ifdef NEED_THREADS
 272         if (g_thread_supported() == FALSE)
 273                 g_thread_init(NULL);
 274 #endif
 275
 276         context = g_option_context_new(NULL);
 277         g_option_context_add_main_entries(context, options, NULL);
 278
 279         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 280                 if (error != NULL) {
 281                         g_printerr("%s\n", error->message);
 282                         g_error_free(error);
 283                 } else
 284                         g_printerr("An unknown error occurred\n");
 285                 exit(1);
 286         }
 287
 288         g_option_context_free(context);
 289
 290         if (option_version == TRUE) {
 291                 printf("%s\n", VERSION);
 292                 exit(0);
 293         }
 294
 295         if (option_detach == TRUE) {
 296                 if (daemon(0, 0)) {
 297                         perror("Can't start daemon");
 298                         exit(1);
 299                 }
 300         }
 301
 302         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 303                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 304                 if (errno != EEXIST)
 305                         perror("Failed to create state directory");
 306         }
 307
 308         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 309                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 310                 if (errno != EEXIST)
 311                         perror("Failed to create storage directory");
 312         }
 313
 314         umask(0077);
 315
 316         main_loop = g_main_loop_new(NULL, FALSE);
 317
 318 #ifdef NEED_THREADS
 319         if (dbus_threads_init_default() == FALSE) {
 320                 fprintf(stderr, "Can't init usage of threads\n");
 321                 exit(1);
 322         }
 323 #endif
 324
 325 #if !defined TIZEN_EXT
 326         signal = setup_signalfd();
 327 #endif
 328
 329         dbus_error_init(&err);
 330
 331         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 332         if (conn == NULL) {
 333                 if (dbus_error_is_set(&err) == TRUE) {
 334                         fprintf(stderr, "%s\n", err.message);
 335                         dbus_error_free(&err);
 336                 } else
 337                         fprintf(stderr, "Can't register with system bus\n");
 338                 exit(1);
 339         }
 340
 341         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 342
 343         __connman_log_init(argv[0], option_debug, option_detach);
 344
 345         __connman_dbus_init(conn);
 346
 347         config = load_config(CONFIGDIR "/main.conf");
 348
 349         parse_config(config);
 350
 351         __connman_storage_migrate();
 352         __connman_technology_init();
 353         __connman_notifier_init();
 354         __connman_service_init();
 355         __connman_provider_init();
 356         __connman_network_init();
 357         __connman_device_init(option_device, option_nodevice);
 358
 359         __connman_agent_init();
 360         __connman_iptables_init();
 361         __connman_tethering_init();
 362         __connman_counter_init();
 363         __connman_manager_init();
 364         __connman_config_init();
 365         __connman_stats_init();
 366         __connman_clock_init();
 367
 368         __connman_resolver_init(option_dnsproxy);
 369         __connman_ipconfig_init();
 370         __connman_rtnl_init();
 371         __connman_task_init();
 372         __connman_proxy_init();
 373         __connman_detect_init();
 374         __connman_session_init();
 375         __connman_timeserver_init();
 376         __connman_connection_init();
 377
 378         __connman_plugin_init(option_plugin, option_noplugin);
 379
 380         __connman_rtnl_start();
 381         __connman_dhcp_init();
 382         __connman_wpad_init();
 383         __connman_wispr_init();
 384         __connman_rfkill_init();
 385
 386         g_free(option_device);
 387         g_free(option_plugin);
 388         g_free(option_nodevice);
 389         g_free(option_noplugin);
 390
 391         g_main_loop_run(main_loop);
 392
 393 #if !defined TIZEN_EXT
 394         g_source_remove(signal);
 395 #endif
 396
 397         __connman_rfkill_cleanup();
 398         __connman_wispr_cleanup();
 399         __connman_wpad_cleanup();
 400         __connman_dhcp_cleanup();
 401         __connman_provider_cleanup();
 402         __connman_plugin_cleanup();
 403         __connman_connection_cleanup();
 404         __connman_timeserver_cleanup();
 405         __connman_session_cleanup();
 406         __connman_detect_cleanup();
 407         __connman_proxy_cleanup();
 408         __connman_task_cleanup();
 409         __connman_rtnl_cleanup();
 410         __connman_resolver_cleanup();
 411
 412         __connman_clock_cleanup();
 413         __connman_stats_cleanup();
 414         __connman_config_cleanup();
 415         __connman_manager_cleanup();
 416         __connman_counter_cleanup();
 417         __connman_agent_cleanup();
 418         __connman_tethering_cleanup();
 419         __connman_iptables_cleanup();
 420         __connman_device_cleanup();
 421         __connman_network_cleanup();
 422         __connman_service_cleanup();
 423         __connman_ipconfig_cleanup();
 424         __connman_notifier_cleanup();
 425         __connman_technology_cleanup();
 426
 427         __connman_dbus_cleanup();
 428
 429         __connman_log_cleanup();
 430
 431         dbus_connection_unref(conn);
 432
 433         g_main_loop_unref(main_loop);
 434
 435         if (config)
 436                 g_key_file_free(config);
 437
 438         g_free(option_debug);
 439
 440         return 0;
 441 }