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 } connman_settings  = {
  48         .bg_scan = TRUE,
  49 };
  50
  51 static GKeyFile *load_config(const char *file)
  52 {
  53         GError *err = NULL;
  54         GKeyFile *keyfile;
  55
  56         keyfile = g_key_file_new();
  57
  58         g_key_file_set_list_separator(keyfile, ',');
  59
  60         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  61                 if (err->code != G_FILE_ERROR_NOENT) {
  62                         connman_error("Parsing %s failed: %s", file,
  63                                                                 err->message);
  64                 }
  65
  66                 g_error_free(err);
  67                 g_key_file_free(keyfile);
  68                 return NULL;
  69         }
  70
  71         return keyfile;
  72 }
  73
  74 static void parse_config(GKeyFile *config)
  75 {
  76         GError *error = NULL;
  77         gboolean boolean;
  78
  79         if (config == NULL)
  80                 return;
  81
  82         DBG("parsing main.conf");
  83
  84         boolean = g_key_file_get_boolean(config, "General",
  85                                                 "BackgroundScanning", &error);
  86         if (error == NULL)
  87                 connman_settings.bg_scan = boolean;
  88
  89         g_clear_error(&error);
  90 }
  91
  92 static GMainLoop *main_loop = NULL;
  93
  94 static gboolean signal_cb(GIOChannel *chan,
  95                                 GIOCondition cond, gpointer data)
  96 {
  97         int signal_fd = GPOINTER_TO_INT(data);
  98         struct signalfd_siginfo si;
  99         ssize_t res;
 100
 101         if (cond & (G_IO_NVAL | G_IO_ERR))
 102                 return FALSE;
 103
 104         res = read(signal_fd, &si, sizeof(si));
 105         if (res != sizeof(si))
 106                 return FALSE;
 107
 108         switch (si.ssi_signo) {
 109         case SIGINT:
 110         case SIGTERM:
 111                 connman_info("Terminating");
 112                 g_main_loop_quit(main_loop);
 113                 break;
 114         default:
 115                 break;
 116         }
 117
 118         return TRUE;
 119 }
 120
 121 static void disconnect_callback(DBusConnection *conn, void *user_data)
 122 {
 123         connman_error("D-Bus disconnect");
 124
 125         g_main_loop_quit(main_loop);
 126 }
 127
 128 static gchar *option_debug = NULL;
 129 static gchar *option_device = NULL;
 130 static gchar *option_plugin = NULL;
 131 static gchar *option_nodevice = NULL;
 132 static gchar *option_noplugin = NULL;
 133 static gchar *option_wifi = NULL;
 134 static gboolean option_detach = TRUE;
 135 static gboolean option_dnsproxy = TRUE;
 136 static gboolean option_compat = FALSE;
 137 static gboolean option_version = FALSE;
 138
 139 static gboolean parse_debug(const char *key, const char *value,
 140                                         gpointer user_data, GError **error)
 141 {
 142         if (value)
 143                 option_debug = g_strdup(value);
 144         else
 145                 option_debug = g_strdup("*");
 146
 147         return TRUE;
 148 }
 149
 150 static GOptionEntry options[] = {
 151         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 152                                 G_OPTION_ARG_CALLBACK, parse_debug,
 153                                 "Specify debug options to enable", "DEBUG" },
 154         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 155                         "Specify networking device or interface", "DEV" },
 156         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 157                         "Specify networking interface to ignore", "DEV" },
 158         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 159                                 "Specify plugins to load", "NAME,..." },
 160         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 161                                 "Specify plugins not to load", "NAME,..." },
 162         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 163                                 "Specify driver for WiFi/Supplicant", "NAME" },
 164         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 165                                 G_OPTION_ARG_NONE, &option_detach,
 166                                 "Don't fork daemon to background" },
 167         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 168                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 169                                 "Don't enable DNS Proxy" },
 170         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 171                                 "(obsolete)" },
 172         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 173                                 "Show version information and exit" },
 174         { NULL },
 175 };
 176
 177 const char *connman_option_get_string(const char *key)
 178 {
 179         if (g_strcmp0(key, "wifi") == 0) {
 180                 if (option_wifi == NULL)
 181                         return "nl80211,wext";
 182                 else
 183                         return option_wifi;
 184         }
 185
 186         return NULL;
 187 }
 188
 189 connman_bool_t connman_setting_get_bool(const char *key)
 190 {
 191         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 192                 return connman_settings.bg_scan;
 193
 194         return FALSE;
 195 }
 196
 197 int main(int argc, char *argv[])
 198 {
 199         GOptionContext *context;
 200         GError *error = NULL;
 201         DBusConnection *conn;
 202         DBusError err;
 203         int signal_fd;
 204         int signal_source;
 205         GIOChannel *signal_io;
 206         sigset_t mask;
 207         GKeyFile *config;
 208
 209 #ifdef HAVE_CAPNG
 210         /* Drop capabilities */
 211 #endif
 212
 213 #ifdef NEED_THREADS
 214         if (g_thread_supported() == FALSE)
 215                 g_thread_init(NULL);
 216 #endif
 217
 218         context = g_option_context_new(NULL);
 219         g_option_context_add_main_entries(context, options, NULL);
 220
 221         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 222                 if (error != NULL) {
 223                         g_printerr("%s\n", error->message);
 224                         g_error_free(error);
 225                 } else
 226                         g_printerr("An unknown error occurred\n");
 227                 exit(1);
 228         }
 229
 230         g_option_context_free(context);
 231
 232         if (option_version == TRUE) {
 233                 printf("%s\n", VERSION);
 234                 exit(0);
 235         }
 236
 237         if (option_detach == TRUE) {
 238                 if (daemon(0, 0)) {
 239                         perror("Can't start daemon");
 240                         exit(1);
 241                 }
 242         }
 243
 244         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 245                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 246                 if (errno != EEXIST)
 247                         perror("Failed to create state directory");
 248         }
 249
 250         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 251                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 252                 if (errno != EEXIST)
 253                         perror("Failed to create storage directory");
 254         }
 255
 256         if (mkdir(STORAGEDIR "/stats", S_IRUSR | S_IWUSR | S_IXUSR |
 257                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 258                 if (errno != EEXIST)
 259                         perror("Failed to create statistics directory");
 260         }
 261
 262         umask(0077);
 263
 264         main_loop = g_main_loop_new(NULL, FALSE);
 265
 266 #ifdef NEED_THREADS
 267         if (dbus_threads_init_default() == FALSE) {
 268                 fprintf(stderr, "Can't init usage of threads\n");
 269                 exit(1);
 270         }
 271 #endif
 272
 273         dbus_error_init(&err);
 274
 275         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 276         if (conn == NULL) {
 277                 if (dbus_error_is_set(&err) == TRUE) {
 278                         fprintf(stderr, "%s\n", err.message);
 279                         dbus_error_free(&err);
 280                 } else
 281                         fprintf(stderr, "Can't register with system bus\n");
 282                 exit(1);
 283         }
 284
 285         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 286
 287         __connman_log_init(option_debug, option_detach);
 288
 289         __connman_dbus_init(conn);
 290
 291         config = load_config(CONFIGDIR "/main.conf");
 292
 293         parse_config(config);
 294
 295         __connman_storage_init();
 296         __connman_technology_init();
 297         __connman_notifier_init();
 298         __connman_location_init();
 299         __connman_service_init();
 300         __connman_provider_init();
 301         __connman_network_init();
 302         __connman_device_init(option_device, option_nodevice);
 303
 304         __connman_agent_init();
 305         __connman_iptables_init();
 306         __connman_tethering_init();
 307         __connman_counter_init();
 308         __connman_manager_init();
 309         __connman_profile_init();
 310         __connman_config_init();
 311         __connman_stats_init();
 312         __connman_clock_init();
 313
 314         __connman_resolver_init(option_dnsproxy);
 315         __connman_ipconfig_init();
 316         __connman_rtnl_init();
 317         __connman_task_init();
 318         __connman_proxy_init();
 319         __connman_detect_init();
 320         __connman_session_init();
 321         __connman_timeserver_init();
 322         __connman_connection_init();
 323
 324         __connman_plugin_init(option_plugin, option_noplugin);
 325
 326         __connman_storage_init_profile();
 327
 328         __connman_rtnl_start();
 329         __connman_dhcp_init();
 330         __connman_wpad_init();
 331         __connman_wispr_init();
 332         __connman_rfkill_init();
 333
 334         g_free(option_device);
 335         g_free(option_plugin);
 336         g_free(option_nodevice);
 337         g_free(option_noplugin);
 338
 339         sigemptyset(&mask);
 340         sigaddset(&mask, SIGTERM);
 341         sigaddset(&mask, SIGINT);
 342
 343         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 344                 fprintf(stderr, "Could not block signals\n");
 345                 exit(1);
 346         }
 347
 348         signal_fd = signalfd(-1, &mask, 0);
 349         if (signal_fd < 0) {
 350                 fprintf(stderr, "Could not init signalfd\n");
 351                 exit(1);
 352         }
 353
 354         signal_io = g_io_channel_unix_new(signal_fd);
 355         g_io_channel_set_close_on_unref(signal_io, TRUE);
 356         signal_source = g_io_add_watch(signal_io,
 357                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 358                                 signal_cb, GINT_TO_POINTER(signal_fd));
 359         g_io_channel_unref(signal_io);
 360
 361         g_main_loop_run(main_loop);
 362
 363         g_source_remove(signal_source);
 364
 365         __connman_rfkill_cleanup();
 366         __connman_wispr_cleanup();
 367         __connman_wpad_cleanup();
 368         __connman_dhcp_cleanup();
 369         __connman_provider_cleanup();
 370         __connman_plugin_cleanup();
 371         __connman_connection_cleanup();
 372         __connman_timeserver_cleanup();
 373         __connman_session_cleanup();
 374         __connman_detect_cleanup();
 375         __connman_proxy_cleanup();
 376         __connman_task_cleanup();
 377         __connman_rtnl_cleanup();
 378         __connman_ipconfig_cleanup();
 379         __connman_resolver_cleanup();
 380
 381         __connman_clock_cleanup();
 382         __connman_stats_cleanup();
 383         __connman_config_cleanup();
 384         __connman_profile_cleanup();
 385         __connman_manager_cleanup();
 386         __connman_counter_cleanup();
 387         __connman_agent_cleanup();
 388         __connman_tethering_cleanup();
 389         __connman_iptables_cleanup();
 390         __connman_device_cleanup();
 391         __connman_network_cleanup();
 392         __connman_service_cleanup();
 393         __connman_location_cleanup();
 394         __connman_notifier_cleanup();
 395         __connman_technology_cleanup();
 396         __connman_storage_cleanup();
 397
 398         __connman_dbus_cleanup();
 399
 400         __connman_log_cleanup();
 401
 402         dbus_connection_unref(conn);
 403
 404         g_main_loop_unref(main_loop);
 405
 406         if (config)
 407                 g_key_file_free(config);
 408
 409         return 0;
 410 }