src/main.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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
  37 #include <gdbus.h>
  38
  39 #ifdef HAVE_CAPNG
  40 #include <cap-ng.h>
  41 #endif
  42
  43 #include "connman.h"
  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 } connman_settings  = {
  51         .bg_scan = TRUE,
  52         .pref_timeservers = NULL,
  53         .auto_connect = NULL,
  54         .preferred_techs = NULL,
  55 };
  56
  57 static GKeyFile *load_config(const char *file)
  58 {
  59         GError *err = NULL;
  60         GKeyFile *keyfile;
  61
  62         keyfile = g_key_file_new();
  63
  64         g_key_file_set_list_separator(keyfile, ',');
  65
  66         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  67                 if (err->code != G_FILE_ERROR_NOENT) {
  68                         connman_error("Parsing %s failed: %s", file,
  69                                                                 err->message);
  70                 }
  71
  72                 g_error_free(err);
  73                 g_key_file_free(keyfile);
  74                 return NULL;
  75         }
  76
  77         return keyfile;
  78 }
  79
  80 static uint *parse_service_types(char **str_list, gsize len)
  81 {
  82         unsigned int *type_list;
  83         int i, j;
  84         enum connman_service_type type;
  85
  86         type_list = g_try_new0(unsigned int, len + 1);
  87         if (type_list == NULL)
  88                 return NULL;
  89
  90         i = 0;
  91         j = 0;
  92         while (str_list[i] != NULL)
  93         {
  94                 type = __connman_service_string2type(str_list[i]);
  95
  96                 if (type != CONNMAN_SERVICE_TYPE_UNKNOWN) {
  97                         type_list[j] = type;
  98                         j += 1;
  99                 }
 100                 i += 1;
 101         }
 102
 103         return type_list;
 104 }
 105
 106 static void parse_config(GKeyFile *config)
 107 {
 108         GError *error = NULL;
 109         gboolean boolean;
 110         char **timeservers;
 111         char **str_list;
 112         gsize len;
 113         char *default_auto_connect[] = {
 114                 "wifi",
 115                 "ethernet",
 116                 "cellular",
 117         };
 118
 119         if (config == NULL)
 120                 return;
 121
 122         DBG("parsing main.conf");
 123
 124         boolean = g_key_file_get_boolean(config, "General",
 125                                                 "BackgroundScanning", &error);
 126         if (error == NULL)
 127                 connman_settings.bg_scan = boolean;
 128
 129         g_clear_error(&error);
 130
 131         timeservers = g_key_file_get_string_list(config, "General",
 132                                                 "FallbackTimeservers", NULL, &error);
 133         if (error == NULL)
 134                 connman_settings.pref_timeservers = timeservers;
 135
 136         g_clear_error(&error);
 137
 138         str_list = g_key_file_get_string_list(config, "General",
 139                         "DefaultAutoConnectTechnologies", &len, &error);
 140
 141         if (error == NULL)
 142                 connman_settings.auto_connect =
 143                         parse_service_types(str_list, len);
 144         else
 145                 connman_settings.auto_connect =
 146                         parse_service_types(default_auto_connect, 3);
 147
 148         g_strfreev(str_list);
 149
 150         g_clear_error(&error);
 151
 152         str_list = g_key_file_get_string_list(config, "General",
 153                         "PreferredTechnologies", &len, &error);
 154
 155         if (error == NULL)
 156                 connman_settings.preferred_techs =
 157                         parse_service_types(str_list, len);
 158
 159         g_strfreev(str_list);
 160
 161         g_clear_error(&error);
 162 }
 163
 164 static GMainLoop *main_loop = NULL;
 165
 166 static unsigned int __terminated = 0;
 167
 168 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
 169                                                         gpointer user_data)
 170 {
 171         struct signalfd_siginfo si;
 172         ssize_t result;
 173         int fd;
 174
 175         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
 176                 return FALSE;
 177
 178         fd = g_io_channel_unix_get_fd(channel);
 179
 180         result = read(fd, &si, sizeof(si));
 181         if (result != sizeof(si))
 182                 return FALSE;
 183
 184         switch (si.ssi_signo) {
 185         case SIGINT:
 186         case SIGTERM:
 187                 if (__terminated == 0) {
 188                         connman_info("Terminating");
 189                         g_main_loop_quit(main_loop);
 190                 }
 191
 192                 __terminated = 1;
 193                 break;
 194         }
 195
 196         return TRUE;
 197 }
 198
 199 static guint setup_signalfd(void)
 200 {
 201         GIOChannel *channel;
 202         guint source;
 203         sigset_t mask;
 204         int fd;
 205
 206         sigemptyset(&mask);
 207         sigaddset(&mask, SIGINT);
 208         sigaddset(&mask, SIGTERM);
 209
 210         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 211                 perror("Failed to set signal mask");
 212                 return 0;
 213         }
 214
 215         fd = signalfd(-1, &mask, 0);
 216         if (fd < 0) {
 217                 perror("Failed to create signal descriptor");
 218                 return 0;
 219         }
 220
 221         channel = g_io_channel_unix_new(fd);
 222
 223         g_io_channel_set_close_on_unref(channel, TRUE);
 224         g_io_channel_set_encoding(channel, NULL, NULL);
 225         g_io_channel_set_buffered(channel, FALSE);
 226
 227         source = g_io_add_watch(channel,
 228                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 229                                 signal_handler, NULL);
 230
 231         g_io_channel_unref(channel);
 232
 233         return source;
 234 }
 235
 236 static void disconnect_callback(DBusConnection *conn, void *user_data)
 237 {
 238         connman_error("D-Bus disconnect");
 239
 240         g_main_loop_quit(main_loop);
 241 }
 242
 243 static gchar *option_debug = NULL;
 244 static gchar *option_device = NULL;
 245 static gchar *option_plugin = NULL;
 246 static gchar *option_nodevice = NULL;
 247 static gchar *option_noplugin = NULL;
 248 static gchar *option_wifi = NULL;
 249 static gboolean option_detach = TRUE;
 250 static gboolean option_dnsproxy = TRUE;
 251 static gboolean option_compat = FALSE;
 252 static gboolean option_version = FALSE;
 253
 254 static gboolean parse_debug(const char *key, const char *value,
 255                                         gpointer user_data, GError **error)
 256 {
 257         if (value)
 258                 option_debug = g_strdup(value);
 259         else
 260                 option_debug = g_strdup("*");
 261
 262         return TRUE;
 263 }
 264
 265 static GOptionEntry options[] = {
 266         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 267                                 G_OPTION_ARG_CALLBACK, parse_debug,
 268                                 "Specify debug options to enable", "DEBUG" },
 269         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 270                         "Specify networking device or interface", "DEV" },
 271         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 272                         "Specify networking interface to ignore", "DEV" },
 273         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 274                                 "Specify plugins to load", "NAME,..." },
 275         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 276                                 "Specify plugins not to load", "NAME,..." },
 277         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 278                                 "Specify driver for WiFi/Supplicant", "NAME" },
 279         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 280                                 G_OPTION_ARG_NONE, &option_detach,
 281                                 "Don't fork daemon to background" },
 282         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 283                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 284                                 "Don't enable DNS Proxy" },
 285         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 286                                 "(obsolete)" },
 287         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 288                                 "Show version information and exit" },
 289         { NULL },
 290 };
 291
 292 const char *connman_option_get_string(const char *key)
 293 {
 294         if (g_strcmp0(key, "wifi") == 0) {
 295                 if (option_wifi == NULL)
 296                         return "nl80211,wext";
 297                 else
 298                         return option_wifi;
 299         }
 300
 301         return NULL;
 302 }
 303
 304 connman_bool_t connman_setting_get_bool(const char *key)
 305 {
 306         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 307                 return connman_settings.bg_scan;
 308
 309         return FALSE;
 310 }
 311
 312 char **connman_setting_get_string_list(const char *key)
 313 {
 314         if (g_str_equal(key, "FallbackTimeservers") == TRUE)
 315                 return connman_settings.pref_timeservers;
 316
 317         return NULL;
 318 }
 319
 320 unsigned int *connman_setting_get_uint_list(const char *key)
 321 {
 322         if (g_str_equal(key, "DefaultAutoConnectTechnologies") == TRUE)
 323                 return connman_settings.auto_connect;
 324
 325         if (g_str_equal(key, "PreferredTechnologies") == TRUE)
 326                 return connman_settings.preferred_techs;
 327
 328         return NULL;
 329 }
 330
 331 int main(int argc, char *argv[])
 332 {
 333         GOptionContext *context;
 334         GError *error = NULL;
 335         DBusConnection *conn;
 336         DBusError err;
 337         GKeyFile *config;
 338         guint signal;
 339
 340 #ifdef HAVE_CAPNG
 341         /* Drop capabilities */
 342 #endif
 343
 344 #ifdef NEED_THREADS
 345         if (g_thread_supported() == FALSE)
 346                 g_thread_init(NULL);
 347 #endif
 348
 349         context = g_option_context_new(NULL);
 350         g_option_context_add_main_entries(context, options, NULL);
 351
 352         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 353                 if (error != NULL) {
 354                         g_printerr("%s\n", error->message);
 355                         g_error_free(error);
 356                 } else
 357                         g_printerr("An unknown error occurred\n");
 358                 exit(1);
 359         }
 360
 361         g_option_context_free(context);
 362
 363         if (option_version == TRUE) {
 364                 printf("%s\n", VERSION);
 365                 exit(0);
 366         }
 367
 368         if (option_detach == TRUE) {
 369                 if (daemon(0, 0)) {
 370                         perror("Can't start daemon");
 371                         exit(1);
 372                 }
 373         }
 374
 375         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 376                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 377                 if (errno != EEXIST)
 378                         perror("Failed to create state directory");
 379         }
 380
 381         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 382                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 383                 if (errno != EEXIST)
 384                         perror("Failed to create storage directory");
 385         }
 386
 387         umask(0077);
 388
 389         main_loop = g_main_loop_new(NULL, FALSE);
 390
 391 #ifdef NEED_THREADS
 392         if (dbus_threads_init_default() == FALSE) {
 393                 fprintf(stderr, "Can't init usage of threads\n");
 394                 exit(1);
 395         }
 396 #endif
 397
 398         signal = setup_signalfd();
 399
 400         dbus_error_init(&err);
 401
 402         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 403         if (conn == NULL) {
 404                 if (dbus_error_is_set(&err) == TRUE) {
 405                         fprintf(stderr, "%s\n", err.message);
 406                         dbus_error_free(&err);
 407                 } else
 408                         fprintf(stderr, "Can't register with system bus\n");
 409                 exit(1);
 410         }
 411
 412         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 413
 414         __connman_log_init(argv[0], option_debug, option_detach);
 415
 416         __connman_dbus_init(conn);
 417
 418         config = load_config(CONFIGDIR "/main.conf");
 419         if (config != NULL) {
 420                 parse_config(config);
 421                 g_key_file_free(config);
 422         }
 423
 424         __connman_storage_migrate();
 425         __connman_technology_init();
 426         __connman_notifier_init();
 427         __connman_service_init();
 428         __connman_provider_init();
 429         __connman_network_init();
 430         __connman_device_init(option_device, option_nodevice);
 431
 432         __connman_agent_init();
 433         __connman_ippool_init();
 434         __connman_iptables_init();
 435         __connman_nat_init();
 436         __connman_tethering_init();
 437         __connman_counter_init();
 438         __connman_manager_init();
 439         __connman_config_init();
 440         __connman_stats_init();
 441         __connman_clock_init();
 442
 443         __connman_resolver_init(option_dnsproxy);
 444         __connman_ipconfig_init();
 445         __connman_rtnl_init();
 446         __connman_task_init();
 447         __connman_proxy_init();
 448         __connman_detect_init();
 449         __connman_session_init();
 450         __connman_timeserver_init();
 451         __connman_connection_init();
 452
 453         __connman_plugin_init(option_plugin, option_noplugin);
 454
 455         __connman_rtnl_start();
 456         __connman_dhcp_init();
 457         __connman_dhcpv6_init();
 458         __connman_wpad_init();
 459         __connman_wispr_init();
 460         __connman_rfkill_init();
 461
 462         g_free(option_device);
 463         g_free(option_plugin);
 464         g_free(option_nodevice);
 465         g_free(option_noplugin);
 466
 467         g_main_loop_run(main_loop);
 468
 469         g_source_remove(signal);
 470
 471         __connman_rfkill_cleanup();
 472         __connman_wispr_cleanup();
 473         __connman_wpad_cleanup();
 474         __connman_dhcpv6_cleanup();
 475         __connman_dhcp_cleanup();
 476         __connman_provider_cleanup();
 477         __connman_plugin_cleanup();
 478         __connman_connection_cleanup();
 479         __connman_timeserver_cleanup();
 480         __connman_session_cleanup();
 481         __connman_detect_cleanup();
 482         __connman_proxy_cleanup();
 483         __connman_task_cleanup();
 484         __connman_rtnl_cleanup();
 485         __connman_resolver_cleanup();
 486
 487         __connman_clock_cleanup();
 488         __connman_stats_cleanup();
 489         __connman_config_cleanup();
 490         __connman_manager_cleanup();
 491         __connman_counter_cleanup();
 492         __connman_agent_cleanup();
 493         __connman_tethering_cleanup();
 494         __connman_nat_cleanup();
 495         __connman_iptables_cleanup();
 496         __connman_ippool_cleanup();
 497         __connman_device_cleanup();
 498         __connman_network_cleanup();
 499         __connman_service_cleanup();
 500         __connman_ipconfig_cleanup();
 501         __connman_notifier_cleanup();
 502         __connman_technology_cleanup();
 503
 504         __connman_dbus_cleanup();
 505
 506         __connman_log_cleanup();
 507
 508         dbus_connection_unref(conn);
 509
 510         g_main_loop_unref(main_loop);
 511
 512         if (connman_settings.pref_timeservers != NULL)
 513                 g_strfreev(connman_settings.pref_timeservers);
 514
 515         g_free(connman_settings.auto_connect);
 516         g_free(connman_settings.preferred_techs);
 517
 518         g_free(option_debug);
 519
 520         return 0;
 521 }