src/main.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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 #include <netdb.h>
  37
  38 #include <gdbus.h>
  39
  40 #include "connman.h"
  41
  42 #define DEFAULT_INPUT_REQUEST_TIMEOUT 120 * 1000
  43 #define DEFAULT_BROWSER_LAUNCH_TIMEOUT 300 * 1000
  44
  45 static struct {
  46         connman_bool_t bg_scan;
  47         char **pref_timeservers;
  48         unsigned int *auto_connect;
  49         unsigned int *preferred_techs;
  50         char **fallback_nameservers;
  51         unsigned int timeout_inputreq;
  52         unsigned int timeout_browserlaunch;
  53 } connman_settings  = {
  54         .bg_scan = TRUE,
  55         .pref_timeservers = NULL,
  56         .auto_connect = NULL,
  57         .preferred_techs = NULL,
  58         .fallback_nameservers = NULL,
  59         .timeout_inputreq = DEFAULT_INPUT_REQUEST_TIMEOUT,
  60         .timeout_browserlaunch = DEFAULT_BROWSER_LAUNCH_TIMEOUT,
  61 };
  62
  63 static GKeyFile *load_config(const char *file)
  64 {
  65         GError *err = NULL;
  66         GKeyFile *keyfile;
  67
  68         keyfile = g_key_file_new();
  69
  70         g_key_file_set_list_separator(keyfile, ',');
  71
  72         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  73                 if (err->code != G_FILE_ERROR_NOENT) {
  74                         connman_error("Parsing %s failed: %s", file,
  75                                                                 err->message);
  76                 }
  77
  78                 g_error_free(err);
  79                 g_key_file_free(keyfile);
  80                 return NULL;
  81         }
  82
  83         return keyfile;
  84 }
  85
  86 static uint *parse_service_types(char **str_list, gsize len)
  87 {
  88         unsigned int *type_list;
  89         int i, j;
  90         enum connman_service_type type;
  91
  92         type_list = g_try_new0(unsigned int, len + 1);
  93         if (type_list == NULL)
  94                 return NULL;
  95
  96         i = 0;
  97         j = 0;
  98         while (str_list[i] != NULL)
  99         {
 100                 type = __connman_service_string2type(str_list[i]);
 101
 102                 if (type != CONNMAN_SERVICE_TYPE_UNKNOWN) {
 103                         type_list[j] = type;
 104                         j += 1;
 105                 }
 106                 i += 1;
 107         }
 108
 109         return type_list;
 110 }
 111
 112 static char **parse_fallback_nameservers(char **nameservers, gsize len)
 113 {
 114         char **servers;
 115         int i, j;
 116         struct addrinfo hints;
 117         struct addrinfo *addr;
 118
 119         servers = g_try_new0(char *, len + 1);
 120         if (servers == NULL)
 121                 return NULL;
 122
 123         i = 0;
 124         j = 0;
 125         while (nameservers[i] != NULL) {
 126                 memset(&hints, 0, sizeof(struct addrinfo));
 127                 hints.ai_flags = AI_NUMERICHOST;
 128                 addr = NULL;
 129                 if (getaddrinfo(nameservers[i], NULL, &hints, &addr) == 0) {
 130                         servers[j] = g_strdup(nameservers[i]);
 131                         j += 1;
 132                 }
 133
 134                 freeaddrinfo(addr);
 135                 i += 1;
 136         }
 137
 138         return servers;
 139 }
 140
 141 static void parse_config(GKeyFile *config)
 142 {
 143         GError *error = NULL;
 144         gboolean boolean;
 145         char **timeservers;
 146         char **str_list;
 147         gsize len;
 148         char *default_auto_connect[] = {
 149                 "wifi",
 150                 "ethernet",
 151                 "cellular",
 152                 NULL
 153         };
 154         int timeout;
 155
 156         if (config == NULL) {
 157                 connman_settings.auto_connect =
 158                         parse_service_types(default_auto_connect, 3);
 159                 return;
 160         }
 161
 162         DBG("parsing main.conf");
 163
 164         boolean = g_key_file_get_boolean(config, "General",
 165                                                 "BackgroundScanning", &error);
 166         if (error == NULL)
 167                 connman_settings.bg_scan = boolean;
 168
 169         g_clear_error(&error);
 170
 171         timeservers = g_key_file_get_string_list(config, "General",
 172                                                 "FallbackTimeservers", NULL, &error);
 173         if (error == NULL)
 174                 connman_settings.pref_timeservers = timeservers;
 175
 176         g_clear_error(&error);
 177
 178         str_list = g_key_file_get_string_list(config, "General",
 179                         "DefaultAutoConnectTechnologies", &len, &error);
 180
 181         if (error == NULL)
 182                 connman_settings.auto_connect =
 183                         parse_service_types(str_list, len);
 184         else
 185                 connman_settings.auto_connect =
 186                         parse_service_types(default_auto_connect, 3);
 187
 188         g_strfreev(str_list);
 189
 190         g_clear_error(&error);
 191
 192         str_list = g_key_file_get_string_list(config, "General",
 193                         "PreferredTechnologies", &len, &error);
 194
 195         if (error == NULL)
 196                 connman_settings.preferred_techs =
 197                         parse_service_types(str_list, len);
 198
 199         g_strfreev(str_list);
 200
 201         g_clear_error(&error);
 202
 203         str_list = g_key_file_get_string_list(config, "General",
 204                         "FallbackNameservers", &len, &error);
 205
 206         if (error == NULL)
 207                 connman_settings.fallback_nameservers =
 208                         parse_fallback_nameservers(str_list, len);
 209
 210         g_strfreev(str_list);
 211
 212         g_clear_error(&error);
 213
 214         timeout = g_key_file_get_integer(config, "General",
 215                         "InputRequestTimeout", &error);
 216         if (error == NULL && timeout >= 0)
 217                 connman_settings.timeout_inputreq = timeout * 1000;
 218
 219         g_clear_error(&error);
 220
 221         timeout = g_key_file_get_integer(config, "General",
 222                         "BrowserLaunchTimeout", &error);
 223         if (error == NULL && timeout >= 0)
 224                 connman_settings.timeout_browserlaunch = timeout * 1000;
 225
 226         g_clear_error(&error);
 227 }
 228
 229 static GMainLoop *main_loop = NULL;
 230
 231 static unsigned int __terminated = 0;
 232
 233 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 234                                                         gpointer user_data)
 235 {
 236         struct signalfd_siginfo si;
 237         ssize_t result;
 238         int fd;
 239
 240         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 241                 return FALSE;
 242
 243         fd = g_io_channel_unix_get_fd(channel);
 244
 245         result = read(fd, &si, sizeof(si));
 246         if (result != sizeof(si))
 247                 return FALSE;
 248
 249         switch (si.ssi_signo) {
 250         case SIGINT:
 251         case SIGTERM:
 252                 if (__terminated == 0) {
 253                         connman_info("Terminating");
 254                         g_main_loop_quit(main_loop);
 255                 }
 256
 257                 __terminated = 1;
 258                 break;
 259         }
 260
 261         return TRUE;
 262 }
 263
 264 static guint setup_signalfd(void)
 265 {
 266         GIOChannel *channel;
 267         guint source;
 268         sigset_t mask;
 269         int fd;
 270
 271         sigemptyset(&mask);
 272         sigaddset(&mask, SIGINT);
 273         sigaddset(&mask, SIGTERM);
 274
 275         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 276                 perror("Failed to set signal mask");
 277                 return 0;
 278         }
 279
 280         fd = signalfd(-1, &mask, 0);
 281         if (fd < 0) {
 282                 perror("Failed to create signal descriptor");
 283                 return 0;
 284         }
 285
 286         channel = g_io_channel_unix_new(fd);
 287
 288         g_io_channel_set_close_on_unref(channel, TRUE);
 289         g_io_channel_set_encoding(channel, NULL, NULL);
 290         g_io_channel_set_buffered(channel, FALSE);
 291
 292         source = g_io_add_watch(channel,
 293                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 294                                 signal_handler, NULL);
 295
 296         g_io_channel_unref(channel);
 297
 298         return source;
 299 }
 300
 301 static void disconnect_callback(DBusConnection *conn, void *user_data)
 302 {
 303         connman_error("D-Bus disconnect");
 304
 305         g_main_loop_quit(main_loop);
 306 }
 307
 308 static gchar *option_debug = NULL;
 309 static gchar *option_device = NULL;
 310 static gchar *option_plugin = NULL;
 311 static gchar *option_nodevice = NULL;
 312 static gchar *option_noplugin = NULL;
 313 static gchar *option_wifi = NULL;
 314 static gboolean option_detach = TRUE;
 315 static gboolean option_dnsproxy = TRUE;
 316 static gboolean option_compat = FALSE;
 317 static gboolean option_version = FALSE;
 318
 319 static gboolean parse_debug(const char *key, const char *value,
 320                                         gpointer user_data, GError **error)
 321 {
 322         if (value)
 323                 option_debug = g_strdup(value);
 324         else
 325                 option_debug = g_strdup("*");
 326
 327         return TRUE;
 328 }
 329
 330 static GOptionEntry options[] = {
 331         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 332                                 G_OPTION_ARG_CALLBACK, parse_debug,
 333                                 "Specify debug options to enable", "DEBUG" },
 334         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 335                         "Specify networking device or interface", "DEV" },
 336         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 337                         "Specify networking interface to ignore", "DEV" },
 338         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 339                                 "Specify plugins to load", "NAME,..." },
 340         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 341                                 "Specify plugins not to load", "NAME,..." },
 342         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 343                                 "Specify driver for WiFi/Supplicant", "NAME" },
 344         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 345                                 G_OPTION_ARG_NONE, &option_detach,
 346                                 "Don't fork daemon to background" },
 347         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 348                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 349                                 "Don't enable DNS Proxy" },
 350         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 351                                 "(obsolete)" },
 352         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 353                                 "Show version information and exit" },
 354         { NULL },
 355 };
 356
 357 const char *connman_option_get_string(const char *key)
 358 {
 359         if (g_strcmp0(key, "wifi") == 0) {
 360                 if (option_wifi == NULL)
 361                         return "nl80211,wext";
 362                 else
 363                         return option_wifi;
 364         }
 365
 366         return NULL;
 367 }
 368
 369 connman_bool_t connman_setting_get_bool(const char *key)
 370 {
 371         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 372                 return connman_settings.bg_scan;
 373
 374         return FALSE;
 375 }
 376
 377 char **connman_setting_get_string_list(const char *key)
 378 {
 379         if (g_str_equal(key, "FallbackTimeservers") == TRUE)
 380                 return connman_settings.pref_timeservers;
 381
 382         if (g_str_equal(key, "FallbackNameservers") == TRUE)
 383                 return connman_settings.fallback_nameservers;
 384
 385         return NULL;
 386 }
 387
 388 unsigned int *connman_setting_get_uint_list(const char *key)
 389 {
 390         if (g_str_equal(key, "DefaultAutoConnectTechnologies") == TRUE)
 391                 return connman_settings.auto_connect;
 392
 393         if (g_str_equal(key, "PreferredTechnologies") == TRUE)
 394                 return connman_settings.preferred_techs;
 395
 396         return NULL;
 397 }
 398
 399 unsigned int connman_timeout_input_request(void) {
 400         return connman_settings.timeout_inputreq;
 401 }
 402
 403 unsigned int connman_timeout_browser_launch(void) {
 404         return connman_settings.timeout_browserlaunch;
 405 }
 406
 407 int main(int argc, char *argv[])
 408 {
 409         GOptionContext *context;
 410         GError *error = NULL;
 411         DBusConnection *conn;
 412         DBusError err;
 413         GKeyFile *config;
 414         guint signal;
 415
 416 #ifdef NEED_THREADS
 417         if (g_thread_supported() == FALSE)
 418                 g_thread_init(NULL);
 419 #endif
 420
 421         context = g_option_context_new(NULL);
 422         g_option_context_add_main_entries(context, options, NULL);
 423
 424         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 425                 if (error != NULL) {
 426                         g_printerr("%s\n", error->message);
 427                         g_error_free(error);
 428                 } else
 429                         g_printerr("An unknown error occurred\n");
 430                 exit(1);
 431         }
 432
 433         g_option_context_free(context);
 434
 435         if (option_version == TRUE) {
 436                 printf("%s\n", VERSION);
 437                 exit(0);
 438         }
 439
 440         if (option_detach == TRUE) {
 441                 if (daemon(0, 0)) {
 442                         perror("Can't start daemon");
 443                         exit(1);
 444                 }
 445         }
 446
 447         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 448                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 449                 if (errno != EEXIST)
 450                         perror("Failed to create state directory");
 451         }
 452
 453         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 454                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 455                 if (errno != EEXIST)
 456                         perror("Failed to create storage directory");
 457         }
 458
 459         umask(0077);
 460
 461         main_loop = g_main_loop_new(NULL, FALSE);
 462
 463 #ifdef NEED_THREADS
 464         if (dbus_threads_init_default() == FALSE) {
 465                 fprintf(stderr, "Can't init usage of threads\n");
 466                 exit(1);
 467         }
 468 #endif
 469
 470         signal = setup_signalfd();
 471
 472         dbus_error_init(&err);
 473
 474         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 475         if (conn == NULL) {
 476                 if (dbus_error_is_set(&err) == TRUE) {
 477                         fprintf(stderr, "%s\n", err.message);
 478                         dbus_error_free(&err);
 479                 } else
 480                         fprintf(stderr, "Can't register with system bus\n");
 481                 exit(1);
 482         }
 483
 484         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 485
 486         __connman_log_init(argv[0], option_debug, option_detach);
 487
 488         __connman_dbus_init(conn);
 489
 490         config = load_config(CONFIGDIR "/main.conf");
 491         parse_config(config);
 492         if (config != NULL)
 493                 g_key_file_free(config);
 494
 495         __connman_storage_migrate();
 496         __connman_technology_init();
 497         __connman_notifier_init();
 498         __connman_service_init();
 499         __connman_provider_init();
 500         __connman_network_init();
 501         __connman_device_init(option_device, option_nodevice);
 502
 503         __connman_agent_init();
 504         __connman_ippool_init();
 505         __connman_iptables_init();
 506         __connman_nat_init();
 507         __connman_tethering_init();
 508         __connman_counter_init();
 509         __connman_manager_init();
 510         __connman_config_init();
 511         __connman_stats_init();
 512         __connman_clock_init();
 513
 514         __connman_resolver_init(option_dnsproxy);
 515         __connman_ipconfig_init();
 516         __connman_rtnl_init();
 517         __connman_task_init();
 518         __connman_proxy_init();
 519         __connman_detect_init();
 520         __connman_session_init();
 521         __connman_timeserver_init();
 522         __connman_connection_init();
 523
 524         __connman_plugin_init(option_plugin, option_noplugin);
 525
 526         __connman_rtnl_start();
 527         __connman_dhcp_init();
 528         __connman_dhcpv6_init();
 529         __connman_wpad_init();
 530         __connman_wispr_init();
 531         __connman_rfkill_init();
 532
 533         g_free(option_device);
 534         g_free(option_plugin);
 535         g_free(option_nodevice);
 536         g_free(option_noplugin);
 537
 538         g_main_loop_run(main_loop);
 539
 540         g_source_remove(signal);
 541
 542         __connman_rfkill_cleanup();
 543         __connman_wispr_cleanup();
 544         __connman_wpad_cleanup();
 545         __connman_dhcpv6_cleanup();
 546         __connman_dhcp_cleanup();
 547         __connman_provider_cleanup();
 548         __connman_plugin_cleanup();
 549         __connman_connection_cleanup();
 550         __connman_timeserver_cleanup();
 551         __connman_session_cleanup();
 552         __connman_detect_cleanup();
 553         __connman_proxy_cleanup();
 554         __connman_task_cleanup();
 555         __connman_rtnl_cleanup();
 556         __connman_resolver_cleanup();
 557
 558         __connman_clock_cleanup();
 559         __connman_stats_cleanup();
 560         __connman_config_cleanup();
 561         __connman_manager_cleanup();
 562         __connman_counter_cleanup();
 563         __connman_agent_cleanup();
 564         __connman_tethering_cleanup();
 565         __connman_nat_cleanup();
 566         __connman_iptables_cleanup();
 567         __connman_ippool_cleanup();
 568         __connman_device_cleanup();
 569         __connman_network_cleanup();
 570         __connman_service_cleanup();
 571         __connman_ipconfig_cleanup();
 572         __connman_notifier_cleanup();
 573         __connman_technology_cleanup();
 574
 575         __connman_dbus_cleanup();
 576
 577         __connman_log_cleanup();
 578
 579         dbus_connection_unref(conn);
 580
 581         g_main_loop_unref(main_loop);
 582
 583         if (connman_settings.pref_timeservers != NULL)
 584                 g_strfreev(connman_settings.pref_timeservers);
 585
 586         g_free(connman_settings.auto_connect);
 587         g_free(connman_settings.preferred_techs);
 588         g_strfreev(connman_settings.fallback_nameservers);
 589
 590         g_free(option_debug);
 591
 592         return 0;
 593 }