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