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