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 #define CONFIGMAINFILE CONFIGDIR "/main.conf"
  46
  47 static char *default_auto_connect[] = {
  48         "wifi",
  49         "ethernet",
  50         "cellular",
  51         NULL
  52 };
  53
  54 static char *default_blacklist[] = {
  55         "vmnet",
  56         "vboxnet",
  57         "virbr",
  58         NULL
  59 };
  60
  61 static struct {
  62         connman_bool_t bg_scan;
  63         char **pref_timeservers;
  64         unsigned int *auto_connect;
  65         unsigned int *preferred_techs;
  66         char **fallback_nameservers;
  67         unsigned int timeout_inputreq;
  68         unsigned int timeout_browserlaunch;
  69         char **blacklisted_interfaces;
  70         connman_bool_t allow_hostname_updates;
  71 } connman_settings  = {
  72         .bg_scan = TRUE,
  73         .pref_timeservers = NULL,
  74         .auto_connect = NULL,
  75         .preferred_techs = NULL,
  76         .fallback_nameservers = NULL,
  77         .timeout_inputreq = DEFAULT_INPUT_REQUEST_TIMEOUT,
  78         .timeout_browserlaunch = DEFAULT_BROWSER_LAUNCH_TIMEOUT,
  79         .blacklisted_interfaces = NULL,
  80         .allow_hostname_updates = TRUE,
  81 };
  82
  83 static GKeyFile *load_config(const char *file)
  84 {
  85         GError *err = NULL;
  86         GKeyFile *keyfile;
  87
  88         keyfile = g_key_file_new();
  89
  90         g_key_file_set_list_separator(keyfile, ',');
  91
  92         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  93                 if (err->code != G_FILE_ERROR_NOENT) {
  94                         connman_error("Parsing %s failed: %s", file,
  95                                                                 err->message);
  96                 }
  97
  98                 g_error_free(err);
  99                 g_key_file_free(keyfile);
 100                 return NULL;
 101         }
 102
 103         return keyfile;
 104 }
 105
 106 static uint *parse_service_types(char **str_list, gsize len)
 107 {
 108         unsigned int *type_list;
 109         int i, j;
 110         enum connman_service_type type;
 111
 112         type_list = g_try_new0(unsigned int, len + 1);
 113         if (type_list == NULL)
 114                 return NULL;
 115
 116         i = 0;
 117         j = 0;
 118         while (str_list[i] != NULL)
 119         {
 120                 type = __connman_service_string2type(str_list[i]);
 121
 122                 if (type != CONNMAN_SERVICE_TYPE_UNKNOWN) {
 123                         type_list[j] = type;
 124                         j += 1;
 125                 }
 126                 i += 1;
 127         }
 128
 129         return type_list;
 130 }
 131
 132 static char **parse_fallback_nameservers(char **nameservers, gsize len)
 133 {
 134         char **servers;
 135         int i, j;
 136
 137         servers = g_try_new0(char *, len + 1);
 138         if (servers == NULL)
 139                 return NULL;
 140
 141         i = 0;
 142         j = 0;
 143         while (nameservers[i] != NULL) {
 144                 if (connman_inet_check_ipaddress(nameservers[i]) > 0) {
 145                         servers[j] = g_strdup(nameservers[i]);
 146                         j += 1;
 147                 }
 148                 i += 1;
 149         }
 150
 151         return servers;
 152 }
 153
 154 static void parse_config(GKeyFile *config)
 155 {
 156         GError *error = NULL;
 157         gboolean boolean;
 158         char **timeservers;
 159         char **interfaces;
 160         char **str_list;
 161         gsize len;
 162         int timeout;
 163
 164         if (config == NULL) {
 165                 connman_settings.auto_connect =
 166                         parse_service_types(default_auto_connect, 3);
 167                 connman_settings.blacklisted_interfaces =
 168                         g_strdupv(default_blacklist);
 169                 return;
 170         }
 171
 172         DBG("parsing main.conf");
 173
 174         boolean = g_key_file_get_boolean(config, "General",
 175                                                 "BackgroundScanning", &error);
 176         if (error == NULL)
 177                 connman_settings.bg_scan = boolean;
 178
 179         g_clear_error(&error);
 180
 181         timeservers = g_key_file_get_string_list(config, "General",
 182                                                 "FallbackTimeservers", NULL, &error);
 183         if (error == NULL)
 184                 connman_settings.pref_timeservers = timeservers;
 185
 186         g_clear_error(&error);
 187
 188         str_list = g_key_file_get_string_list(config, "General",
 189                         "DefaultAutoConnectTechnologies", &len, &error);
 190
 191         if (error == NULL)
 192                 connman_settings.auto_connect =
 193                         parse_service_types(str_list, len);
 194         else
 195                 connman_settings.auto_connect =
 196                         parse_service_types(default_auto_connect, 3);
 197
 198         g_strfreev(str_list);
 199
 200         g_clear_error(&error);
 201
 202         str_list = g_key_file_get_string_list(config, "General",
 203                         "PreferredTechnologies", &len, &error);
 204
 205         if (error == NULL)
 206                 connman_settings.preferred_techs =
 207                         parse_service_types(str_list, len);
 208
 209         g_strfreev(str_list);
 210
 211         g_clear_error(&error);
 212
 213         str_list = g_key_file_get_string_list(config, "General",
 214                         "FallbackNameservers", &len, &error);
 215
 216         if (error == NULL)
 217                 connman_settings.fallback_nameservers =
 218                         parse_fallback_nameservers(str_list, len);
 219
 220         g_strfreev(str_list);
 221
 222         g_clear_error(&error);
 223
 224         timeout = g_key_file_get_integer(config, "General",
 225                         "InputRequestTimeout", &error);
 226         if (error == NULL && timeout >= 0)
 227                 connman_settings.timeout_inputreq = timeout * 1000;
 228
 229         g_clear_error(&error);
 230
 231         timeout = g_key_file_get_integer(config, "General",
 232                         "BrowserLaunchTimeout", &error);
 233         if (error == NULL && timeout >= 0)
 234                 connman_settings.timeout_browserlaunch = timeout * 1000;
 235
 236         g_clear_error(&error);
 237
 238         interfaces = g_key_file_get_string_list(config, "General",
 239                         "NetworkInterfaceBlacklist", &len, &error);
 240
 241         if (error == NULL)
 242                 connman_settings.blacklisted_interfaces = interfaces;
 243         else
 244                 connman_settings.blacklisted_interfaces =
 245                         g_strdupv(default_blacklist);
 246
 247         g_clear_error(&error);
 248
 249         boolean = g_key_file_get_boolean(config, "General",
 250                                         "AllowHostnameUpdates",
 251                                         &error);
 252         if (error == NULL)
 253                 connman_settings.allow_hostname_updates = boolean;
 254
 255         g_clear_error(&error);
 256 }
 257
 258 static int config_init(const char *file)
 259 {
 260         GKeyFile *config;
 261
 262         config = load_config(file);
 263         parse_config(config);
 264         if (config != NULL)
 265                 g_key_file_free(config);
 266
 267         return 0;
 268 }
 269
 270 static GMainLoop *main_loop = NULL;
 271
 272 static unsigned int __terminated = 0;
 273
 274 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 275                                                         gpointer user_data)
 276 {
 277         struct signalfd_siginfo si;
 278         ssize_t result;
 279         int fd;
 280
 281         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 282                 return FALSE;
 283
 284         fd = g_io_channel_unix_get_fd(channel);
 285
 286         result = read(fd, &si, sizeof(si));
 287         if (result != sizeof(si))
 288                 return FALSE;
 289
 290         switch (si.ssi_signo) {
 291         case SIGINT:
 292         case SIGTERM:
 293                 if (__terminated == 0) {
 294                         connman_info("Terminating");
 295                         g_main_loop_quit(main_loop);
 296                 }
 297
 298                 __terminated = 1;
 299                 break;
 300         }
 301
 302         return TRUE;
 303 }
 304
 305 static guint setup_signalfd(void)
 306 {
 307         GIOChannel *channel;
 308         guint source;
 309         sigset_t mask;
 310         int fd;
 311
 312         sigemptyset(&mask);
 313         sigaddset(&mask, SIGINT);
 314         sigaddset(&mask, SIGTERM);
 315
 316         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 317                 perror("Failed to set signal mask");
 318                 return 0;
 319         }
 320
 321         fd = signalfd(-1, &mask, 0);
 322         if (fd < 0) {
 323                 perror("Failed to create signal descriptor");
 324                 return 0;
 325         }
 326
 327         channel = g_io_channel_unix_new(fd);
 328
 329         g_io_channel_set_close_on_unref(channel, TRUE);
 330         g_io_channel_set_encoding(channel, NULL, NULL);
 331         g_io_channel_set_buffered(channel, FALSE);
 332
 333         source = g_io_add_watch(channel,
 334                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 335                                 signal_handler, NULL);
 336
 337         g_io_channel_unref(channel);
 338
 339         return source;
 340 }
 341
 342 static void disconnect_callback(DBusConnection *conn, void *user_data)
 343 {
 344         connman_error("D-Bus disconnect");
 345
 346         g_main_loop_quit(main_loop);
 347 }
 348
 349 static gchar *option_config = NULL;
 350 static gchar *option_debug = NULL;
 351 static gchar *option_device = NULL;
 352 static gchar *option_plugin = NULL;
 353 static gchar *option_nodevice = NULL;
 354 static gchar *option_noplugin = NULL;
 355 static gchar *option_wifi = NULL;
 356 static gboolean option_detach = TRUE;
 357 static gboolean option_dnsproxy = TRUE;
 358 static gboolean option_version = FALSE;
 359
 360 static gboolean parse_debug(const char *key, const char *value,
 361                                         gpointer user_data, GError **error)
 362 {
 363         if (value)
 364                 option_debug = g_strdup(value);
 365         else
 366                 option_debug = g_strdup("*");
 367
 368         return TRUE;
 369 }
 370
 371 static GOptionEntry options[] = {
 372         { "config", 'c', 0, G_OPTION_ARG_STRING, &option_config,
 373                                 "Load the specified configuration file "
 374                                 "instead of " CONFIGMAINFILE, "FILE" },
 375         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 376                                 G_OPTION_ARG_CALLBACK, parse_debug,
 377                                 "Specify debug options to enable", "DEBUG" },
 378         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 379                         "Specify networking device or interface", "DEV" },
 380         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 381                         "Specify networking interface to ignore", "DEV" },
 382         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 383                                 "Specify plugins to load", "NAME,..." },
 384         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 385                                 "Specify plugins not to load", "NAME,..." },
 386         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 387                                 "Specify driver for WiFi/Supplicant", "NAME" },
 388         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 389                                 G_OPTION_ARG_NONE, &option_detach,
 390                                 "Don't fork daemon to background" },
 391         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 392                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 393                                 "Don't enable DNS Proxy" },
 394         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 395                                 "Show version information and exit" },
 396         { NULL },
 397 };
 398
 399 const char *connman_option_get_string(const char *key)
 400 {
 401         if (g_strcmp0(key, "wifi") == 0) {
 402                 if (option_wifi == NULL)
 403                         return "nl80211,wext";
 404                 else
 405                         return option_wifi;
 406         }
 407
 408         return NULL;
 409 }
 410
 411 connman_bool_t connman_setting_get_bool(const char *key)
 412 {
 413         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 414                 return connman_settings.bg_scan;
 415
 416         if (g_str_equal(key, "AllowHostnameUpdates") == TRUE)
 417                 return connman_settings.allow_hostname_updates;
 418
 419         return FALSE;
 420 }
 421
 422 char **connman_setting_get_string_list(const char *key)
 423 {
 424         if (g_str_equal(key, "FallbackTimeservers") == TRUE)
 425                 return connman_settings.pref_timeservers;
 426
 427         if (g_str_equal(key, "FallbackNameservers") == TRUE)
 428                 return connman_settings.fallback_nameservers;
 429
 430         if (g_str_equal(key, "NetworkInterfaceBlacklist") == TRUE)
 431                 return connman_settings.blacklisted_interfaces;
 432
 433         return NULL;
 434 }
 435
 436 unsigned int *connman_setting_get_uint_list(const char *key)
 437 {
 438         if (g_str_equal(key, "DefaultAutoConnectTechnologies") == TRUE)
 439                 return connman_settings.auto_connect;
 440
 441         if (g_str_equal(key, "PreferredTechnologies") == TRUE)
 442                 return connman_settings.preferred_techs;
 443
 444         return NULL;
 445 }
 446
 447 unsigned int connman_timeout_input_request(void) {
 448         return connman_settings.timeout_inputreq;
 449 }
 450
 451 unsigned int connman_timeout_browser_launch(void) {
 452         return connman_settings.timeout_browserlaunch;
 453 }
 454
 455 int main(int argc, char *argv[])
 456 {
 457         GOptionContext *context;
 458         GError *error = NULL;
 459         DBusConnection *conn;
 460         DBusError err;
 461         guint signal;
 462
 463 #ifdef NEED_THREADS
 464         if (g_thread_supported() == FALSE)
 465                 g_thread_init(NULL);
 466 #endif
 467
 468         context = g_option_context_new(NULL);
 469         g_option_context_add_main_entries(context, options, NULL);
 470
 471         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 472                 if (error != NULL) {
 473                         g_printerr("%s\n", error->message);
 474                         g_error_free(error);
 475                 } else
 476                         g_printerr("An unknown error occurred\n");
 477                 exit(1);
 478         }
 479
 480         g_option_context_free(context);
 481
 482         if (option_version == TRUE) {
 483                 printf("%s\n", VERSION);
 484                 exit(0);
 485         }
 486
 487         if (option_detach == TRUE) {
 488                 if (daemon(0, 0)) {
 489                         perror("Can't start daemon");
 490                         exit(1);
 491                 }
 492         }
 493
 494         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 495                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 496                 if (errno != EEXIST)
 497                         perror("Failed to create state directory");
 498         }
 499
 500         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 501                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 502                 if (errno != EEXIST)
 503                         perror("Failed to create storage directory");
 504         }
 505
 506         umask(0077);
 507
 508         main_loop = g_main_loop_new(NULL, FALSE);
 509
 510 #ifdef NEED_THREADS
 511         if (dbus_threads_init_default() == FALSE) {
 512                 fprintf(stderr, "Can't init usage of threads\n");
 513                 exit(1);
 514         }
 515 #endif
 516
 517         signal = setup_signalfd();
 518
 519         dbus_error_init(&err);
 520
 521         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 522         if (conn == NULL) {
 523                 if (dbus_error_is_set(&err) == TRUE) {
 524                         fprintf(stderr, "%s\n", err.message);
 525                         dbus_error_free(&err);
 526                 } else
 527                         fprintf(stderr, "Can't register with system bus\n");
 528                 exit(1);
 529         }
 530
 531         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 532
 533         __connman_log_init(argv[0], option_debug, option_detach);
 534
 535         __connman_dbus_init(conn);
 536
 537         if (option_config == NULL)
 538                 config_init(CONFIGMAINFILE);
 539         else
 540                 config_init(option_config);
 541
 542         __connman_storage_migrate();
 543         __connman_technology_init();
 544         __connman_notifier_init();
 545         __connman_service_init();
 546         __connman_provider_init();
 547         __connman_network_init();
 548         __connman_device_init(option_device, option_nodevice);
 549
 550         __connman_agent_init();
 551         __connman_ippool_init();
 552         __connman_iptables_init();
 553         __connman_nat_init();
 554         __connman_tethering_init();
 555         __connman_counter_init();
 556         __connman_manager_init();
 557         __connman_config_init();
 558         __connman_stats_init();
 559         __connman_clock_init();
 560
 561         __connman_resolver_init(option_dnsproxy);
 562         __connman_ipconfig_init();
 563         __connman_rtnl_init();
 564         __connman_task_init();
 565         __connman_proxy_init();
 566         __connman_detect_init();
 567         __connman_session_init();
 568         __connman_timeserver_init();
 569         __connman_connection_init();
 570
 571         __connman_plugin_init(option_plugin, option_noplugin);
 572
 573         __connman_rtnl_start();
 574         __connman_dhcp_init();
 575         __connman_dhcpv6_init();
 576         __connman_wpad_init();
 577         __connman_wispr_init();
 578         __connman_rfkill_init();
 579
 580         g_free(option_config);
 581         g_free(option_device);
 582         g_free(option_plugin);
 583         g_free(option_nodevice);
 584         g_free(option_noplugin);
 585
 586         g_main_loop_run(main_loop);
 587
 588         g_source_remove(signal);
 589
 590         __connman_rfkill_cleanup();
 591         __connman_wispr_cleanup();
 592         __connman_wpad_cleanup();
 593         __connman_dhcpv6_cleanup();
 594         __connman_dhcp_cleanup();
 595         __connman_provider_cleanup();
 596         __connman_plugin_cleanup();
 597         __connman_connection_cleanup();
 598         __connman_timeserver_cleanup();
 599         __connman_session_cleanup();
 600         __connman_detect_cleanup();
 601         __connman_proxy_cleanup();
 602         __connman_task_cleanup();
 603         __connman_rtnl_cleanup();
 604         __connman_resolver_cleanup();
 605
 606         __connman_clock_cleanup();
 607         __connman_stats_cleanup();
 608         __connman_config_cleanup();
 609         __connman_manager_cleanup();
 610         __connman_counter_cleanup();
 611         __connman_agent_cleanup();
 612         __connman_tethering_cleanup();
 613         __connman_nat_cleanup();
 614         __connman_iptables_cleanup();
 615         __connman_ippool_cleanup();
 616         __connman_device_cleanup();
 617         __connman_network_cleanup();
 618         __connman_service_cleanup();
 619         __connman_ipconfig_cleanup();
 620         __connman_notifier_cleanup();
 621         __connman_technology_cleanup();
 622
 623         __connman_dbus_cleanup();
 624
 625         __connman_log_cleanup();
 626
 627         dbus_connection_unref(conn);
 628
 629         g_main_loop_unref(main_loop);
 630
 631         if (connman_settings.pref_timeservers != NULL)
 632                 g_strfreev(connman_settings.pref_timeservers);
 633
 634         g_free(connman_settings.auto_connect);
 635         g_free(connman_settings.preferred_techs);
 636         g_strfreev(connman_settings.fallback_nameservers);
 637         g_strfreev(connman_settings.blacklisted_interfaces);
 638
 639         g_free(option_debug);
 640
 641         return 0;
 642 }