src/main.c

   1 /*
   2  *
   3  *  neard - Near Field Communication manager
   4  *
   5  *  Copyright (C) 2011  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
  32 #include <gdbus.h>
  33
  34 #include "near.h"
  35
  36 static struct {
  37         near_bool_t constant_poll;
  38 } near_settings  = {
  39         .constant_poll = FALSE,
  40 };
  41
  42 static GKeyFile *load_config(const char *file)
  43 {
  44         GError *err = NULL;
  45         GKeyFile *keyfile;
  46
  47         keyfile = g_key_file_new();
  48
  49         g_key_file_set_list_separator(keyfile, ',');
  50
  51         if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
  52                 if (err->code != G_FILE_ERROR_NOENT) {
  53                         near_error("Parsing %s failed: %s", file,
  54                                                                 err->message);
  55                 }
  56
  57                 g_error_free(err);
  58                 g_key_file_free(keyfile);
  59                 return NULL;
  60         }
  61
  62         return keyfile;
  63 }
  64
  65 static void parse_config(GKeyFile *config)
  66 {
  67         GError *error = NULL;
  68         gboolean boolean;
  69
  70         if (config == NULL)
  71                 return;
  72
  73         DBG("parsing main.conf");
  74
  75         boolean = g_key_file_get_boolean(config, "General",
  76                                                 "ConstantPoll", &error);
  77         if (error == NULL)
  78                 near_settings.constant_poll = boolean;
  79
  80         g_clear_error(&error);
  81 }
  82
  83 static GMainLoop *main_loop = NULL;
  84
  85 static volatile sig_atomic_t __terminated = 0;
  86
  87 static void sig_term(int sig)
  88 {
  89         if (__terminated > 0)
  90                 return;
  91
  92         __terminated = 1;
  93
  94         near_info("Terminating");
  95
  96         g_main_loop_quit(main_loop);
  97 }
  98
  99 static void disconnect_callback(DBusConnection *conn, void *user_data)
 100 {
 101         near_error("D-Bus disconnect");
 102
 103         g_main_loop_quit(main_loop);
 104 }
 105
 106 static gchar *option_debug = NULL;
 107 static gchar *option_plugin = NULL;
 108 static gchar *option_noplugin = NULL;
 109 static gboolean option_detach = TRUE;
 110 static gboolean option_version = FALSE;
 111
 112 static gboolean parse_debug(const char *key, const char *value,
 113                                         gpointer user_data, GError **error)
 114 {
 115         if (value)
 116                 option_debug = g_strdup(value);
 117         else
 118                 option_debug = g_strdup("*");
 119
 120         return TRUE;
 121 }
 122
 123 static GOptionEntry options[] = {
 124         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 125                                 G_OPTION_ARG_CALLBACK, parse_debug,
 126                                 "Specify debug options to enable", "DEBUG" },
 127         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
 128                                 G_OPTION_ARG_NONE, &option_detach,
 129                                 "Don't fork daemon to background" },
 130         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 131                                 "Specify plugins to load", "NAME,..." },
 132         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 133                                 "Specify plugins not to load", "NAME,..." },
 134         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
 135                                 "Show version information and exit" },
 136         { NULL },
 137 };
 138
 139 near_bool_t near_setting_get_bool(const char *key)
 140 {
 141         if (g_str_equal(key, "ConstantPoll") == TRUE)
 142                 return near_settings.constant_poll;
 143
 144         return FALSE;
 145 }
 146
 147 int main(int argc, char *argv[])
 148 {
 149         GOptionContext *context;
 150         GError *error = NULL;
 151         DBusConnection *conn;
 152         DBusError err;
 153         GKeyFile *config;
 154         struct sigaction sa;
 155
 156         context = g_option_context_new(NULL);
 157         g_option_context_add_main_entries(context, options, NULL);
 158
 159         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 160                 if (error != NULL) {
 161                         g_printerr("%s\n", error->message);
 162                         g_error_free(error);
 163                 } else
 164                         g_printerr("An unknown error occurred\n");
 165                 exit(1);
 166         }
 167
 168         g_option_context_free(context);
 169
 170         if (option_version == TRUE) {
 171                 printf("%s\n", VERSION);
 172                 exit(0);
 173         }
 174
 175         if (option_detach == TRUE) {
 176                 if (daemon(0, 0)) {
 177                         perror("Can't start daemon");
 178                         exit(1);
 179                 }
 180         }
 181
 182         main_loop = g_main_loop_new(NULL, FALSE);
 183
 184         dbus_error_init(&err);
 185
 186         conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, NFC_SERVICE, &err);
 187         if (conn == NULL) {
 188                 if (dbus_error_is_set(&err) == TRUE) {
 189                         fprintf(stderr, "%s\n", err.message);
 190                         dbus_error_free(&err);
 191                 } else
 192                         fprintf(stderr, "Can't register with system bus\n");
 193                 exit(1);
 194         }
 195
 196         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 197
 198         __near_log_init(option_debug, option_detach);
 199         __near_dbus_init(conn);
 200
 201         config = load_config(CONFIGDIR "/main.conf");
 202
 203         parse_config(config);
 204
 205         __near_netlink_init();
 206         __near_tag_init();
 207         __near_device_init();
 208         __near_adapter_init();
 209         __near_ndef_init();
 210         __near_manager_init(conn);
 211         __near_bluetooth_init();
 212         __near_agent_init();
 213
 214         __near_plugin_init(option_plugin, option_noplugin);
 215
 216         memset(&sa, 0, sizeof(sa));
 217         sa.sa_handler = sig_term;
 218         sigaction(SIGINT, &sa, NULL);
 219         sigaction(SIGTERM, &sa, NULL);
 220
 221         g_main_loop_run(main_loop);
 222
 223         __near_plugin_cleanup();
 224
 225         __near_agent_cleanup();
 226         __near_bluetooth_cleanup();
 227         __near_manager_cleanup();
 228         __near_ndef_cleanup();
 229         __near_adapter_cleanup();
 230         __near_device_cleanup();
 231         __near_tag_cleanup();
 232         __near_netlink_cleanup();
 233
 234         __near_dbus_cleanup();
 235         __near_log_cleanup();
 236
 237         dbus_connection_unref(conn);
 238
 239         g_main_loop_unref(main_loop);
 240
 241         if (config)
 242                 g_key_file_free(config);
 243
 244         return 0;
 245 }