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_bool_t single_tech;
  72 } connman_settings  = {
  73         .bg_scan = TRUE,
  74         .pref_timeservers = NULL,
  75         .auto_connect = NULL,
  76         .preferred_techs = NULL,
  77         .fallback_nameservers = NULL,
  78         .timeout_inputreq = DEFAULT_INPUT_REQUEST_TIMEOUT,
  79         .timeout_browserlaunch = DEFAULT_BROWSER_LAUNCH_TIMEOUT,
  80         .blacklisted_interfaces = NULL,
  81         .allow_hostname_updates = TRUE,
  82         .single_tech = FALSE,
  83 };
  84
  85 static GKeyFile *load_config(const char *file)
  86 {
  87         GError *err = NULL;
  88         GKeyFile *keyfile;
  89
  90         keyfile = g_key_file_new();
  91
  92         g_key_file_set_list_separator(keyfile, ',');
  93
  94         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  95                 if (err->code != G_FILE_ERROR_NOENT) {
  96                         connman_error("Parsing %s failed: %s", file,
  97                                                                 err->message);
  98                 }
  99
 100                 g_error_free(err);
 101                 g_key_file_free(keyfile);
 102                 return NULL;
 103         }
 104
 105         return keyfile;
 106 }
 107
 108 static uint *parse_service_types(char **str_list, gsize len)
 109 {
 110         unsigned int *type_list;
 111         int i, j;
 112         enum connman_service_type type;
 113
 114         type_list = g_try_new0(unsigned int, len + 1);
 115         if (type_list == NULL)
 116                 return NULL;
 117
 118         i = 0;
 119         j = 0;
 120         while (str_list[i] != NULL)
 121         {
 122                 type = __connman_service_string2type(str_list[i]);
 123
 124                 if (type != CONNMAN_SERVICE_TYPE_UNKNOWN) {
 125                         type_list[j] = type;
 126                         j += 1;
 127                 }
 128                 i += 1;
 129         }
 130
 131         return type_list;
 132 }
 133
 134 static char **parse_fallback_nameservers(char **nameservers, gsize len)
 135 {
 136         char **servers;
 137         int i, j;
 138
 139         servers = g_try_new0(char *, len + 1);
 140         if (servers == NULL)
 141                 return NULL;
 142
 143         i = 0;
 144         j = 0;
 145         while (nameservers[i] != NULL) {
 146                 if (connman_inet_check_ipaddress(nameservers[i]) > 0) {
 147                         servers[j] = g_strdup(nameservers[i]);
 148                         j += 1;
 149                 }
 150                 i += 1;
 151         }
 152
 153         return servers;
 154 }
 155
 156 static void parse_config(GKeyFile *config)
 157 {
 158         GError *error = NULL;
 159         gboolean boolean;
 160         char **timeservers;
 161         char **interfaces;
 162         char **str_list;
 163         gsize len;
 164         int timeout;
 165
 166         if (config == NULL) {
 167                 connman_settings.auto_connect =
 168                         parse_service_types(default_auto_connect, 3);
 169                 connman_settings.blacklisted_interfaces =
 170                         g_strdupv(default_blacklist);
 171                 return;
 172         }
 173
 174         DBG("parsing main.conf");
 175
 176         boolean = g_key_file_get_boolean(config, "General",
 177                                                 "BackgroundScanning", &error);
 178         if (error == NULL)
 179                 connman_settings.bg_scan = boolean;
 180
 181         g_clear_error(&error);
 182
 183         timeservers = g_key_file_get_string_list(config, "General",
 184                                                 "FallbackTimeservers", NULL, &error);
 185         if (error == NULL)
 186                 connman_settings.pref_timeservers = timeservers;
 187
 188         g_clear_error(&error);
 189
 190         str_list = g_key_file_get_string_list(config, "General",
 191                         "DefaultAutoConnectTechnologies", &len, &error);
 192
 193         if (error == NULL)
 194                 connman_settings.auto_connect =
 195                         parse_service_types(str_list, len);
 196         else
 197                 connman_settings.auto_connect =
 198                         parse_service_types(default_auto_connect, 3);
 199
 200         g_strfreev(str_list);
 201
 202         g_clear_error(&error);
 203
 204         str_list = g_key_file_get_string_list(config, "General",
 205                         "PreferredTechnologies", &len, &error);
 206
 207         if (error == NULL)
 208                 connman_settings.preferred_techs =
 209                         parse_service_types(str_list, len);
 210
 211         g_strfreev(str_list);
 212
 213         g_clear_error(&error);
 214
 215         str_list = g_key_file_get_string_list(config, "General",
 216                         "FallbackNameservers", &len, &error);
 217
 218         if (error == NULL)
 219                 connman_settings.fallback_nameservers =
 220                         parse_fallback_nameservers(str_list, len);
 221
 222         g_strfreev(str_list);
 223
 224         g_clear_error(&error);
 225
 226         timeout = g_key_file_get_integer(config, "General",
 227                         "InputRequestTimeout", &error);
 228         if (error == NULL && timeout >= 0)
 229                 connman_settings.timeout_inputreq = timeout * 1000;
 230
 231         g_clear_error(&error);
 232
 233         timeout = g_key_file_get_integer(config, "General",
 234                         "BrowserLaunchTimeout", &error);
 235         if (error == NULL && timeout >= 0)
 236                 connman_settings.timeout_browserlaunch = timeout * 1000;
 237
 238         g_clear_error(&error);
 239
 240         interfaces = g_key_file_get_string_list(config, "General",
 241                         "NetworkInterfaceBlacklist", &len, &error);
 242
 243         if (error == NULL)
 244                 connman_settings.blacklisted_interfaces = interfaces;
 245         else
 246                 connman_settings.blacklisted_interfaces =
 247                         g_strdupv(default_blacklist);
 248
 249         g_clear_error(&error);
 250
 251         boolean = g_key_file_get_boolean(config, "General",
 252                                         "AllowHostnameUpdates",
 253                                         &error);
 254         if (error == NULL)
 255                 connman_settings.allow_hostname_updates = boolean;
 256
 257         g_clear_error(&error);
 258
 259         boolean = g_key_file_get_boolean(config, "General",
 260                         "SingleConnectedTechnology", &error);
 261         if (error == NULL)
 262                 connman_settings.single_tech = boolean;
 263
 264         g_clear_error(&error);
 265 }
 266
 267 static int config_init(const char *file)
 268 {
 269         GKeyFile *config;
 270
 271         config = load_config(file);
 272         parse_config(config);
 273         if (config != NULL)
 274                 g_key_file_free(config);
 275
 276         return 0;
 277 }
 278
 279 static GMainLoop *main_loop = NULL;
 280
 281 static unsigned int __terminated = 0;
 282
 283 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 284                                                         gpointer user_data)
 285 {
 286         struct signalfd_siginfo si;
 287         ssize_t result;
 288         int fd;
 289
 290         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 291                 return FALSE;
 292
 293         fd = g_io_channel_unix_get_fd(channel);
 294
 295         result = read(fd, &si, sizeof(si));
 296         if (result != sizeof(si))
 297                 return FALSE;
 298
 299         switch (si.ssi_signo) {
 300         case SIGINT:
 301         case SIGTERM:
 302                 if (__terminated == 0) {
 303                         connman_info("Terminating");
 304                         g_main_loop_quit(main_loop);
 305                 }
 306
 307                 __terminated = 1;
 308                 break;
 309         }
 310
 311         return TRUE;
 312 }
 313
 314 static guint setup_signalfd(void)
 315 {
 316         GIOChannel *channel;
 317         guint source;
 318         sigset_t mask;
 319         int fd;
 320
 321         sigemptyset(&mask);
 322         sigaddset(&mask, SIGINT);
 323         sigaddset(&mask, SIGTERM);
 324
 325         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 326                 perror("Failed to set signal mask");
 327                 return 0;
 328         }
 329
 330         fd = signalfd(-1, &mask, 0);
 331         if (fd < 0) {
 332                 perror("Failed to create signal descriptor");
 333                 return 0;
 334         }
 335
 336         channel = g_io_channel_unix_new(fd);
 337
 338         g_io_channel_set_close_on_unref(channel, TRUE);
 339         g_io_channel_set_encoding(channel, NULL, NULL);
 340         g_io_channel_set_buffered(channel, FALSE);
 341
 342         source = g_io_add_watch(channel,
 343                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 344                                 signal_handler, NULL);
 345
 346         g_io_channel_unref(channel);
 347
 348         return source;
 349 }
 350
 351 static void disconnect_callback(DBusConnection *conn, void *user_data)
 352 {
 353         connman_error("D-Bus disconnect");
 354
 355         g_main_loop_quit(main_loop);
 356 }
 357
 358 static gchar *option_config = NULL;
 359 static gchar *option_debug = NULL;
 360 static gchar *option_device = NULL;
 361 static gchar *option_plugin = NULL;
 362 static gchar *option_nodevice = NULL;
 363 static gchar *option_noplugin = NULL;
 364 static gchar *option_wifi = NULL;
 365 static gboolean option_detach = TRUE;
 366 static gboolean option_dnsproxy = TRUE;
 367 static gboolean option_backtrace = TRUE;
 368 static gboolean option_version = FALSE;
 369
 370 static gboolean parse_debug(const char *key, const char *value,
 371                                         gpointer user_data, GError **error)
 372 {
 373         if (value)
 374                 option_debug = g_strdup(value);
 375         else
 376                 option_debug = g_strdup("*");
 377
 378         return TRUE;
 379 }
 380
 381 static GOptionEntry options[] = {
 382         { "config", 'c', 0, G_OPTION_ARG_STRING, &option_config,
 383                                 "Load the specified configuration file "
 384                                 "instead of " CONFIGMAINFILE, "FILE" },
 385         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 386                                 G_OPTION_ARG_CALLBACK, parse_debug,
 387                                 "Specify debug options to enable", "DEBUG" },
 388         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 389                         "Specify networking device or interface", "DEV" },
 390         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 391                         "Specify networking interface to ignore", "DEV" },
 392         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 393                                 "Specify plugins to load", "NAME,..." },
 394         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 395                                 "Specify plugins not to load", "NAME,..." },
 396         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 397                                 "Specify driver for WiFi/Supplicant", "NAME" },
 398         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 399                                 G_OPTION_ARG_NONE, &option_detach,
 400                                 "Don't fork daemon to background" },
 401         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 402                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 403                                 "Don't enable DNS Proxy" },
 404         { "nobacktrace", 0, G_OPTION_FLAG_REVERSE,
 405                                 G_OPTION_ARG_NONE, &option_backtrace,
 406                                 "Don't print out backtrace information" },
 407         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 408                                 "Show version information and exit" },
 409         { NULL },
 410 };
 411
 412 const char *connman_option_get_string(const char *key)
 413 {
 414         if (g_strcmp0(key, "wifi") == 0) {
 415                 if (option_wifi == NULL)
 416                         return "nl80211,wext";
 417                 else
 418                         return option_wifi;
 419         }
 420
 421         return NULL;
 422 }
 423
 424 connman_bool_t connman_setting_get_bool(const char *key)
 425 {
 426         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 427                 return connman_settings.bg_scan;
 428
 429         if (g_str_equal(key, "AllowHostnameUpdates") == TRUE)
 430                 return connman_settings.allow_hostname_updates;
 431
 432         if (g_str_equal(key, "SingleConnectedTechnology") == TRUE)
 433                 return connman_settings.single_tech;
 434
 435         return FALSE;
 436 }
 437
 438 char **connman_setting_get_string_list(const char *key)
 439 {
 440         if (g_str_equal(key, "FallbackTimeservers") == TRUE)
 441                 return connman_settings.pref_timeservers;
 442
 443         if (g_str_equal(key, "FallbackNameservers") == TRUE)
 444                 return connman_settings.fallback_nameservers;
 445
 446         if (g_str_equal(key, "NetworkInterfaceBlacklist") == TRUE)
 447                 return connman_settings.blacklisted_interfaces;
 448
 449         return NULL;
 450 }
 451
 452 unsigned int *connman_setting_get_uint_list(const char *key)
 453 {
 454         if (g_str_equal(key, "DefaultAutoConnectTechnologies") == TRUE)
 455                 return connman_settings.auto_connect;
 456
 457         if (g_str_equal(key, "PreferredTechnologies") == TRUE)
 458                 return connman_settings.preferred_techs;
 459
 460         return NULL;
 461 }
 462
 463 unsigned int connman_timeout_input_request(void) {
 464         return connman_settings.timeout_inputreq;
 465 }
 466
 467 unsigned int connman_timeout_browser_launch(void) {
 468         return connman_settings.timeout_browserlaunch;
 469 }
 470
 471 int main(int argc, char *argv[])
 472 {
 473         GOptionContext *context;
 474         GError *error = NULL;
 475         DBusConnection *conn;
 476         DBusError err;
 477         guint signal;
 478
 479 #ifdef NEED_THREADS
 480         if (g_thread_supported() == FALSE)
 481                 g_thread_init(NULL);
 482 #endif
 483
 484         context = g_option_context_new(NULL);
 485         g_option_context_add_main_entries(context, options, NULL);
 486
 487         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 488                 if (error != NULL) {
 489                         g_printerr("%s\n", error->message);
 490                         g_error_free(error);
 491                 } else
 492                         g_printerr("An unknown error occurred\n");
 493                 exit(1);
 494         }
 495
 496         g_option_context_free(context);
 497
 498         if (option_version == TRUE) {
 499                 printf("%s\n", VERSION);
 500                 exit(0);
 501         }
 502
 503         if (option_detach == TRUE) {
 504                 if (daemon(0, 0)) {
 505                         perror("Can't start daemon");
 506                         exit(1);
 507                 }
 508         }
 509
 510         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 511                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 512                 if (errno != EEXIST)
 513                         perror("Failed to create state directory");
 514         }
 515
 516         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 517                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 518                 if (errno != EEXIST)
 519                         perror("Failed to create storage directory");
 520         }
 521
 522         umask(0077);
 523
 524         main_loop = g_main_loop_new(NULL, FALSE);
 525
 526 #ifdef NEED_THREADS
 527         if (dbus_threads_init_default() == FALSE) {
 528                 fprintf(stderr, "Can't init usage of threads\n");
 529                 exit(1);
 530         }
 531 #endif
 532
 533         signal = setup_signalfd();
 534
 535         dbus_error_init(&err);
 536
 537         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 538         if (conn == NULL) {
 539                 if (dbus_error_is_set(&err) == TRUE) {
 540                         fprintf(stderr, "%s\n", err.message);
 541                         dbus_error_free(&err);
 542                 } else
 543                         fprintf(stderr, "Can't register with system bus\n");
 544                 exit(1);
 545         }
 546
 547         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 548
 549         __connman_log_init(argv[0], option_debug, option_detach,
 550                         option_backtrace, "Connection Manager", VERSION);
 551
 552         __connman_dbus_init(conn);
 553
 554         if (option_config == NULL)
 555                 config_init(CONFIGMAINFILE);
 556         else
 557                 config_init(option_config);
 558
 559         __connman_storage_migrate();
 560         __connman_technology_init();
 561         __connman_notifier_init();
 562         __connman_agent_init();
 563         __connman_service_init();
 564         __connman_provider_init();
 565         __connman_network_init();
 566         __connman_device_init(option_device, option_nodevice);
 567
 568         __connman_ippool_init();
 569         __connman_iptables_init();
 570         __connman_nat_init();
 571         __connman_tethering_init();
 572         __connman_counter_init();
 573         __connman_manager_init();
 574         __connman_config_init();
 575         __connman_stats_init();
 576         __connman_clock_init();
 577
 578         __connman_resolver_init(option_dnsproxy);
 579         __connman_ipconfig_init();
 580         __connman_rtnl_init();
 581         __connman_task_init();
 582         __connman_proxy_init();
 583         __connman_detect_init();
 584         __connman_session_init();
 585         __connman_timeserver_init();
 586         __connman_connection_init();
 587
 588         __connman_plugin_init(option_plugin, option_noplugin);
 589
 590         __connman_rtnl_start();
 591         __connman_dhcp_init();
 592         __connman_dhcpv6_init();
 593         __connman_wpad_init();
 594         __connman_wispr_init();
 595         __connman_rfkill_init();
 596
 597         g_free(option_config);
 598         g_free(option_device);
 599         g_free(option_plugin);
 600         g_free(option_nodevice);
 601         g_free(option_noplugin);
 602
 603         g_main_loop_run(main_loop);
 604
 605         g_source_remove(signal);
 606
 607         __connman_rfkill_cleanup();
 608         __connman_wispr_cleanup();
 609         __connman_wpad_cleanup();
 610         __connman_dhcpv6_cleanup();
 611         __connman_dhcp_cleanup();
 612         __connman_plugin_cleanup();
 613         __connman_provider_cleanup();
 614         __connman_connection_cleanup();
 615         __connman_timeserver_cleanup();
 616         __connman_session_cleanup();
 617         __connman_detect_cleanup();
 618         __connman_proxy_cleanup();
 619         __connman_task_cleanup();
 620         __connman_rtnl_cleanup();
 621         __connman_resolver_cleanup();
 622
 623         __connman_clock_cleanup();
 624         __connman_stats_cleanup();
 625         __connman_config_cleanup();
 626         __connman_manager_cleanup();
 627         __connman_counter_cleanup();
 628         __connman_tethering_cleanup();
 629         __connman_nat_cleanup();
 630         __connman_iptables_cleanup();
 631         __connman_ippool_cleanup();
 632         __connman_device_cleanup();
 633         __connman_network_cleanup();
 634         __connman_service_cleanup();
 635         __connman_agent_cleanup();
 636         __connman_ipconfig_cleanup();
 637         __connman_notifier_cleanup();
 638         __connman_technology_cleanup();
 639
 640         __connman_dbus_cleanup();
 641
 642         __connman_log_cleanup(option_backtrace);
 643
 644         dbus_connection_unref(conn);
 645
 646         g_main_loop_unref(main_loop);
 647
 648         if (connman_settings.pref_timeservers != NULL)
 649                 g_strfreev(connman_settings.pref_timeservers);
 650
 651         g_free(connman_settings.auto_connect);
 652         g_free(connman_settings.preferred_techs);
 653         g_strfreev(connman_settings.fallback_nameservers);
 654         g_strfreev(connman_settings.blacklisted_interfaces);
 655
 656         g_free(option_debug);
 657
 658         return 0;
 659 }