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