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 <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <signal.h>
  31 #include <getopt.h>
  32 #include <sys/stat.h>
  33 #include <net/if.h>
  34
  35 #include <gdbus.h>
  36
  37 #ifdef HAVE_CAPNG
  38 #include <cap-ng.h>
  39 #endif
  40
  41 #include "connman.h"
  42
  43 static struct {
  44         connman_bool_t bg_scan;
  45 } connman_settings  = {
  46         .bg_scan = TRUE,
  47 };
  48
  49 static GKeyFile *load_config(const char *file)
  50 {
  51         GError *err = NULL;
  52         GKeyFile *keyfile;
  53
  54         keyfile = g_key_file_new();
  55
  56         g_key_file_set_list_separator(keyfile, ',');
  57
  58         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  59                 connman_error("Parsing %s failed: %s", file, err->message);
  60                 g_error_free(err);
  61                 g_key_file_free(keyfile);
  62                 return NULL;
  63         }
  64
  65         return keyfile;
  66 }
  67
  68 static void parse_config(GKeyFile *config)
  69 {
  70         GError *error = NULL;
  71         gboolean boolean;
  72
  73         if (config == NULL)
  74                 return;
  75
  76         DBG("parsing main.conf");
  77
  78         boolean = g_key_file_get_boolean(config, "General",
  79                                                 "BackgroundScanning", &error);
  80         if (error == NULL)
  81                 connman_settings.bg_scan = boolean;
  82
  83         g_clear_error(&error);
  84 }
  85
  86 static GMainLoop *main_loop = NULL;
  87
  88 static void sig_term(int sig)
  89 {
  90         connman_info("Terminating");
  91
  92         g_main_loop_quit(main_loop);
  93 }
  94
  95 static void disconnect_callback(DBusConnection *conn, void *user_data)
  96 {
  97         connman_error("D-Bus disconnect");
  98
  99         g_main_loop_quit(main_loop);
 100 }
 101
 102 static gchar *option_debug = NULL;
 103 static gchar *option_device = NULL;
 104 static gchar *option_plugin = NULL;
 105 static gchar *option_nodevice = NULL;
 106 static gchar *option_noplugin = NULL;
 107 static gchar *option_wifi = NULL;
 108 static gboolean option_detach = TRUE;
 109 static gboolean option_dnsproxy = TRUE;
 110 static gboolean option_compat = FALSE;
 111 static gboolean option_version = FALSE;
 112
 113 static gboolean parse_debug(const char *key, const char *value,
 114                                         gpointer user_data, GError **error)
 115 {
 116         if (value)
 117                 option_debug = g_strdup(value);
 118         else
 119                 option_debug = g_strdup("*");
 120
 121         return TRUE;
 122 }
 123
 124 static GOptionEntry options[] = {
 125         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 126                                 G_OPTION_ARG_CALLBACK, parse_debug,
 127                                 "Specify debug options to enable", "DEBUG" },
 128         { "device", 'i', 0, G_OPTION_ARG_STRING, &option_device,
 129                         "Specify networking device or interface", "DEV" },
 130         { "nodevice", 'I', 0, G_OPTION_ARG_STRING, &option_nodevice,
 131                         "Specify networking interface to ignore", "DEV" },
 132         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 133                                 "Specify plugins to load", "NAME,..." },
 134         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 135                                 "Specify plugins not to load", "NAME,..." },
 136         { "wifi", 'W', 0, G_OPTION_ARG_STRING, &option_wifi,
 137                                 "Specify driver for WiFi/Supplicant", "NAME" },
 138         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 139                                 G_OPTION_ARG_NONE, &option_detach,
 140                                 "Don't fork daemon to background" },
 141         { "nodnsproxy", 'r', G_OPTION_FLAG_REVERSE,
 142                                 G_OPTION_ARG_NONE, &option_dnsproxy,
 143                                 "Don't enable DNS Proxy" },
 144         { "compat", 'c', 0, G_OPTION_ARG_NONE, &option_compat,
 145                                 "(obsolete)" },
 146         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 147                                 "Show version information and exit" },
 148         { NULL },
 149 };
 150
 151 const char *connman_option_get_string(const char *key)
 152 {
 153         if (g_strcmp0(key, "wifi") == 0) {
 154                 if (option_wifi == NULL)
 155                         return "nl80211,wext";
 156                 else
 157                         return option_wifi;
 158         }
 159
 160         return NULL;
 161 }
 162
 163 connman_bool_t connman_setting_get_bool(const char *key)
 164 {
 165         if (g_str_equal(key, "BackgroundScanning") == TRUE)
 166                 return connman_settings.bg_scan;
 167
 168         return FALSE;
 169 }
 170
 171 int main(int argc, char *argv[])
 172 {
 173         GOptionContext *context;
 174         GError *error = NULL;
 175         DBusConnection *conn;
 176         DBusError err;
 177         struct sigaction sa;
 178         mode_t old_umask;
 179         GKeyFile *config;
 180
 181 #ifdef HAVE_CAPNG
 182         /* Drop capabilities */
 183 #endif
 184
 185 #ifdef NEED_THREADS
 186         if (g_thread_supported() == FALSE)
 187                 g_thread_init(NULL);
 188 #endif
 189
 190         context = g_option_context_new(NULL);
 191         g_option_context_add_main_entries(context, options, NULL);
 192
 193         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 194                 if (error != NULL) {
 195                         g_printerr("%s\n", error->message);
 196                         g_error_free(error);
 197                 } else
 198                         g_printerr("An unknown error occurred\n");
 199                 exit(1);
 200         }
 201
 202         g_option_context_free(context);
 203
 204         if (option_version == TRUE) {
 205                 printf("%s\n", VERSION);
 206                 exit(0);
 207         }
 208
 209         if (option_detach == TRUE) {
 210                 if (daemon(0, 0)) {
 211                         perror("Can't start daemon");
 212                         exit(1);
 213                 }
 214         }
 215
 216         if (mkdir(STATEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 217                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 218                 if (errno != EEXIST)
 219                         perror("Failed to create state directory");
 220         }
 221
 222         if (mkdir(STORAGEDIR, S_IRUSR | S_IWUSR | S_IXUSR |
 223                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 224                 if (errno != EEXIST)
 225                         perror("Failed to create storage directory");
 226         }
 227
 228         if (mkdir(STORAGEDIR "/stats", S_IRUSR | S_IWUSR | S_IXUSR |
 229                                 S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) < 0) {
 230                 if (errno != EEXIST)
 231                         perror("Failed to create statistics directory");
 232         }
 233
 234         old_umask = umask(077);
 235
 236         main_loop = g_main_loop_new(NULL, FALSE);
 237
 238 #ifdef NEED_THREADS
 239         if (dbus_threads_init_default() == FALSE) {
 240                 fprintf(stderr, "Can't init usage of threads\n");
 241                 exit(1);
 242         }
 243 #endif
 244
 245         dbus_error_init(&err);
 246
 247         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, CONNMAN_SERVICE, &err);
 248         if (conn == NULL) {
 249                 if (dbus_error_is_set(&err) == TRUE) {
 250                         fprintf(stderr, "%s\n", err.message);
 251                         dbus_error_free(&err);
 252                 } else
 253                         fprintf(stderr, "Can't register with system bus\n");
 254                 exit(1);
 255         }
 256
 257         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 258
 259         __connman_log_init(option_debug, option_detach);
 260
 261         __connman_dbus_init(conn);
 262
 263         config = load_config(CONFIGDIR "/main.conf");
 264
 265         parse_config(config);
 266
 267         __connman_storage_init();
 268         __connman_element_init(option_device, option_nodevice);
 269
 270         __connman_agent_init();
 271         __connman_iptables_init();
 272         __connman_tethering_init();
 273         __connman_counter_init();
 274         __connman_manager_init();
 275         __connman_profile_init();
 276         __connman_config_init();
 277         __connman_stats_init();
 278         __connman_clock_init();
 279
 280         __connman_resolver_init(option_dnsproxy);
 281         __connman_ipconfig_init();
 282         __connman_rtnl_init();
 283         __connman_task_init();
 284         __connman_proxy_init();
 285         __connman_detect_init();
 286         __connman_session_init();
 287         __connman_timeserver_init();
 288         __connman_connection_init();
 289
 290         __connman_plugin_init(option_plugin, option_noplugin);
 291
 292         __connman_element_start();
 293
 294         g_free(option_device);
 295         g_free(option_plugin);
 296         g_free(option_nodevice);
 297         g_free(option_noplugin);
 298
 299         memset(&sa, 0, sizeof(sa));
 300         sa.sa_handler = sig_term;
 301         sigaction(SIGINT, &sa, NULL);
 302         sigaction(SIGTERM, &sa, NULL);
 303
 304         g_main_loop_run(main_loop);
 305
 306         __connman_element_stop();
 307
 308         __connman_plugin_cleanup();
 309
 310         __connman_connection_cleanup();
 311         __connman_timeserver_cleanup();
 312         __connman_session_cleanup();
 313         __connman_detect_cleanup();
 314         __connman_proxy_cleanup();
 315         __connman_task_cleanup();
 316         __connman_rtnl_cleanup();
 317         __connman_ipconfig_cleanup();
 318         __connman_resolver_cleanup();
 319
 320         __connman_clock_cleanup();
 321         __connman_stats_cleanup();
 322         __connman_config_cleanup();
 323         __connman_profile_cleanup();
 324         __connman_manager_cleanup();
 325         __connman_counter_cleanup();
 326         __connman_agent_cleanup();
 327         __connman_tethering_cleanup();
 328         __connman_iptables_cleanup();
 329
 330         __connman_element_cleanup();
 331         __connman_storage_cleanup();
 332
 333         __connman_dbus_cleanup();
 334
 335         __connman_log_cleanup();
 336
 337         dbus_connection_unref(conn);
 338
 339         g_main_loop_unref(main_loop);
 340
 341         if (config)
 342                 g_key_file_free(config);
 343
 344         return 0;
 345 }