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 #include <signal.h>
  32 #include <sys/signalfd.h>
  33 #include <getopt.h>
  34 #include <sys/stat.h>
  35 #include <net/if.h>
  36
  37 #include <gdbus.h>
  38
  39 #ifdef HAVE_CAPNG
  40 #include <cap-ng.h>
  41 #endif
  42
  43 #include "connman.h"
  44
  45 static struct {
  46         connman_bool_t bg_scan;
  47         char **pref_timeservers;
  48         unsigned int *auto_connect;
  49 } connman_settings  = {
  50         .bg_scan = TRUE,
  51         .pref_timeservers = NULL,
  52         .auto_connect = NULL,
  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 uint *parse_service_types(char **str_list, gsize len)
  79 {
  80         unsigned int *type_list;
  81         int i, j;
  82         enum connman_service_type type;
  83
  84         type_list = g_try_new0(unsigned int, len + 1);
  85         if (type_list == NULL)
  86                 return NULL;
  87
  88         i = 0;
  89         j = 0;
  90         while (str_list[i] != NULL)
  91         {
  92                 type = __connman_service_string2type(str_list[i]);
  93
  94                 if (type != CONNMAN_SERVICE_TYPE_UNKNOWN) {
  95                         type_list[j] = type;
  96                         j += 1;
  97                 }
  98                 i += 1;
  99         }
 100
 101         return type_list;
 102 }
 103
 104 static void parse_config(GKeyFile *config)
 105 {
 106         GError *error = NULL;
 107         gboolean boolean;
 108         char **timeservers;
 109         char **str_list;
 110         gsize len;
 111         char *default_auto_connect[] = {
 112                 "wifi",
 113                 "ethernet",
 114                 "cellular",
 115         };
 116
 117         if (config == NULL)
 118                 return;
 119
 120         DBG("parsing main.conf");
 121
 122         boolean = g_key_file_get_boolean(config, "General",
 123                                                 "BackgroundScanning", &error);
 124         if (error == NULL)
 125                 connman_settings.bg_scan = boolean;
 126
 127         g_clear_error(&error);
 128
 129         timeservers = g_key_file_get_string_list(config, "General",
 130                                                 "FallbackTimeservers", NULL, &error);
 131         if (error == NULL)
 132                 connman_settings.pref_timeservers = timeservers;
 133
 134         g_clear_error(&error);
 135
 136         str_list = g_key_file_get_string_list(config, "General",
 137                         "DefaultAutoConnectTechnologies", &len, &error);
 138
 139         if (error == NULL)
 140                 connman_settings.auto_connect =
 141                         parse_service_types(str_list, len);
 142         else
 143                 connman_settings.auto_connect =
 144                         parse_service_types(default_auto_connect, 3);
 145
 146         g_strfreev(str_list);
 147
 148         g_clear_error(&error);
 149 }
 150
 151 static GMainLoop *main_loop = NULL;
 152
 153 static unsigned int __terminated = 0;
 154
 155 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 156                                                         gpointer user_data)
 157 {
 158         struct signalfd_siginfo si;
 159         ssize_t result;
 160         int fd;
 161
 162         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 163                 return FALSE;
 164
 165         fd = g_io_channel_unix_get_fd(channel);
 166
 167         result = read(fd, &si, sizeof(si));
 168         if (result != sizeof(si))
 169                 return FALSE;
 170
 171         switch (si.ssi_signo) {
 172         case SIGINT:
 173         case SIGTERM:
 174                 if (__terminated == 0) {
 175                         connman_info("Terminating");
 176                         g_main_loop_quit(main_loop);
 177                 }
 178
 179                 __terminated = 1;
 180                 break;
 181         }
 182
 183         return TRUE;
 184 }
 185
 186 static guint setup_signalfd(void)
 187 {
 188         GIOChannel *channel;
 189         guint source;
 190         sigset_t mask;
 191         int fd;
 192
 193         sigemptyset(&mask);
 194         sigaddset(&mask, SIGINT);
 195         sigaddset(&mask, SIGTERM);
 196
 197         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 198                 perror("Failed to set signal mask");
 199                 return 0;
 200         }
 201
 202         fd = signalfd(-1, &mask, 0);
 203         if (fd < 0) {
 204                 perror("Failed to create signal descriptor");
 205                 return 0;
 206         }
 207
 208         channel = g_io_channel_unix_new(fd);
 209
 210         g_io_channel_set_close_on_unref(channel, TRUE);
 211         g_io_channel_set_encoding(channel, NULL, NULL);
 212         g_io_channel_set_buffered(channel, FALSE);
 213
 214         source = g_io_add_watch(channel,
 215                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 216                                 signal_handler, NULL);
 217
 218         g_io_channel_unref(channel);
 219
 220         return source;
 221 }
 222
 223 static void disconnect_callback(DBusConnection *conn, void *user_data)
 224 {
 225         connman_error("D-Bus disconnect");
 226
 227         g_main_loop_quit(main_loop);
 228 }
 229
 230 static gchar *option_debug = NULL;
 231 static gchar *option_device = NULL;
 232 static gchar *option_plugin = NULL;
 233 static gchar *option_nodevice = NULL;
 234 static gchar *option_noplugin = NULL;
 235 static gchar *option_wifi = NULL;
 236 static gboolean option_detach = TRUE;
 237 static gboolean option_dnsproxy = TRUE;
 238 static gboolean option_compat = FALSE;
 239 static gboolean option_version = FALSE;
 240
 241 static gboolean parse_debug(const char *key, const char *value,
 242                                         gpointer user_data, GError **error)
 243 {
 244         if (value)
 245                 option_debug = g_strdup(value);
 246         else
 247                 option_debug = g_strdup("*");
 248
 249         return TRUE;
 250 }
 251
 252 static GOptionEntry options[] = {
 253         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 254                                 G_OPTION_ARG_CALLBACK, parse_debug,
 255                                 "Specify debug options to enable", "DEBUG" },
 256         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 257                         "Specify networking device or interface", "DEV" },
 258         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 259                         "Specify networking interface to ignore", "DEV" },
 260         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 261                                 "Specify plugins to load", "NAME,..." },
 262         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 263                                 "Specify plugins not to load", "NAME,..." },
 264         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 265                                 "Specify driver for WiFi/Supplicant", "NAME" },
 266         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 267                                 G_OPTION_ARG_NONE, &option_detach,
 268                                 "Don't fork daemon to background" },
 269         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 270                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 271                                 "Don't enable DNS Proxy" },
 272         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 273                                 "(obsolete)" },
 274         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 275                                 "Show version information and exit" },
 276         { NULL },
 277 };
 278
 279 const char *connman_option_get_string(const char *key)
 280 {
 281         if (g_strcmp0(key, "wifi") == 0) {
 282                 if (option_wifi == NULL)
 283                         return "nl80211,wext";
 284                 else
 285                         return option_wifi;
 286         }
 287
 288         return NULL;
 289 }
 290
 291 connman_bool_t connman_setting_get_bool(const char *key)
 292 {
 293         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 294                 return connman_settings.bg_scan;
 295
 296         return FALSE;
 297 }
 298
 299 char **connman_setting_get_string_list(const char *key)
 300 {
 301         if (g_str_equal(key, "FallbackTimeservers") == TRUE)
 302                 return connman_settings.pref_timeservers;
 303
 304         return NULL;
 305 }
 306
 307 unsigned int *connman_setting_get_uint_list(const char *key)
 308 {
 309         if (g_str_equal(key, "DefaultAutoConnectTechnologies") == TRUE)
 310                 return connman_settings.auto_connect;
 311
 312         return NULL;
 313 }
 314
 315 int main(int argc, char *argv[])
 316 {
 317         GOptionContext *context;
 318         GError *error = NULL;
 319         DBusConnection *conn;
 320         DBusError err;
 321         GKeyFile *config;
 322         guint signal;
 323
 324 #ifdef HAVE_CAPNG
 325         /* Drop capabilities */
 326 #endif
 327
 328 #ifdef NEED_THREADS
 329         if (g_thread_supported() == FALSE)
 330                 g_thread_init(NULL);
 331 #endif
 332
 333         context = g_option_context_new(NULL);
 334         g_option_context_add_main_entries(context, options, NULL);
 335
 336         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 337                 if (error != NULL) {
 338                         g_printerr("%s\n", error->message);
 339                         g_error_free(error);
 340                 } else
 341                         g_printerr("An unknown error occurred\n");
 342                 exit(1);
 343         }
 344
 345         g_option_context_free(context);
 346
 347         if (option_version == TRUE) {
 348                 printf("%s\n", VERSION);
 349                 exit(0);
 350         }
 351
 352         if (option_detach == TRUE) {
 353                 if (daemon(0, 0)) {
 354                         perror("Can't start daemon");
 355                         exit(1);
 356                 }
 357         }
 358
 359         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 360                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 361                 if (errno != EEXIST)
 362                         perror("Failed to create state directory");
 363         }
 364
 365         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 366                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 367                 if (errno != EEXIST)
 368                         perror("Failed to create storage directory");
 369         }
 370
 371         umask(0077);
 372
 373         main_loop = g_main_loop_new(NULL, FALSE);
 374
 375 #ifdef NEED_THREADS
 376         if (dbus_threads_init_default() == FALSE) {
 377                 fprintf(stderr, "Can't init usage of threads\n");
 378                 exit(1);
 379         }
 380 #endif
 381
 382         signal = setup_signalfd();
 383
 384         dbus_error_init(&err);
 385
 386         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 387         if (conn == NULL) {
 388                 if (dbus_error_is_set(&err) == TRUE) {
 389                         fprintf(stderr, "%s\n", err.message);
 390                         dbus_error_free(&err);
 391                 } else
 392                         fprintf(stderr, "Can't register with system bus\n");
 393                 exit(1);
 394         }
 395
 396         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 397
 398         __connman_log_init(argv[0], option_debug, option_detach);
 399
 400         __connman_dbus_init(conn);
 401
 402         config = load_config(CONFIGDIR "/main.conf");
 403         if (config != NULL) {
 404                 parse_config(config);
 405                 g_key_file_free(config);
 406         }
 407
 408         __connman_storage_migrate();
 409         __connman_technology_init();
 410         __connman_notifier_init();
 411         __connman_service_init();
 412         __connman_provider_init();
 413         __connman_network_init();
 414         __connman_device_init(option_device, option_nodevice);
 415
 416         __connman_agent_init();
 417         __connman_ippool_init();
 418         __connman_iptables_init();
 419         __connman_nat_init();
 420         __connman_tethering_init();
 421         __connman_counter_init();
 422         __connman_manager_init();
 423         __connman_config_init();
 424         __connman_stats_init();
 425         __connman_clock_init();
 426
 427         __connman_resolver_init(option_dnsproxy);
 428         __connman_ipconfig_init();
 429         __connman_rtnl_init();
 430         __connman_task_init();
 431         __connman_proxy_init();
 432         __connman_detect_init();
 433         __connman_session_init();
 434         __connman_timeserver_init();
 435         __connman_connection_init();
 436
 437         __connman_plugin_init(option_plugin, option_noplugin);
 438
 439         __connman_rtnl_start();
 440         __connman_dhcp_init();
 441         __connman_dhcpv6_init();
 442         __connman_wpad_init();
 443         __connman_wispr_init();
 444         __connman_rfkill_init();
 445
 446         g_free(option_device);
 447         g_free(option_plugin);
 448         g_free(option_nodevice);
 449         g_free(option_noplugin);
 450
 451         g_main_loop_run(main_loop);
 452
 453         g_source_remove(signal);
 454
 455         __connman_rfkill_cleanup();
 456         __connman_wispr_cleanup();
 457         __connman_wpad_cleanup();
 458         __connman_dhcpv6_cleanup();
 459         __connman_dhcp_cleanup();
 460         __connman_provider_cleanup();
 461         __connman_plugin_cleanup();
 462         __connman_connection_cleanup();
 463         __connman_timeserver_cleanup();
 464         __connman_session_cleanup();
 465         __connman_detect_cleanup();
 466         __connman_proxy_cleanup();
 467         __connman_task_cleanup();
 468         __connman_rtnl_cleanup();
 469         __connman_resolver_cleanup();
 470
 471         __connman_clock_cleanup();
 472         __connman_stats_cleanup();
 473         __connman_config_cleanup();
 474         __connman_manager_cleanup();
 475         __connman_counter_cleanup();
 476         __connman_agent_cleanup();
 477         __connman_tethering_cleanup();
 478         __connman_nat_cleanup();
 479         __connman_iptables_cleanup();
 480         __connman_ippool_cleanup();
 481         __connman_device_cleanup();
 482         __connman_network_cleanup();
 483         __connman_service_cleanup();
 484         __connman_ipconfig_cleanup();
 485         __connman_notifier_cleanup();
 486         __connman_technology_cleanup();
 487
 488         __connman_dbus_cleanup();
 489
 490         __connman_log_cleanup();
 491
 492         dbus_connection_unref(conn);
 493
 494         g_main_loop_unref(main_loop);
 495
 496         if (connman_settings.pref_timeservers != NULL)
 497                 g_strfreev(connman_settings.pref_timeservers);
 498
 499         g_free(connman_settings.auto_connect);
 500
 501         g_free(option_debug);
 502
 503         return 0;
 504 }