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