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 GMainLoop *main_loop = NULL;
  37
  38 static volatile sig_atomic_t __terminated = 0;
  39
  40 static void sig_term(int sig)
  41 {
  42         if (__terminated > 0)
  43                 return;
  44
  45         __terminated = 1;
  46
  47         near_info("Terminating");
  48
  49         g_main_loop_quit(main_loop);
  50 }
  51
  52 static void disconnect_callback(DBusConnection *conn, void *user_data)
  53 {
  54         near_error("D-Bus disconnect");
  55
  56         g_main_loop_quit(main_loop);
  57 }
  58
  59 static gchar *option_debug = NULL;
  60 static gchar *option_plugin = NULL;
  61 static gchar *option_noplugin = NULL;
  62 static gboolean option_detach = TRUE;
  63 static gboolean option_version = FALSE;
  64
  65 static gboolean parse_debug(const char *key, const char *value,
  66                                         gpointer user_data, GError **error)
  67 {
  68         if (value)
  69                 option_debug = g_strdup(value);
  70         else
  71                 option_debug = g_strdup("*");
  72
  73         return TRUE;
  74 }
  75
  76 static GOptionEntry options[] = {
  77         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
  78                                 G_OPTION_ARG_CALLBACK, parse_debug,
  79                                 "Specify debug options to enable", "DEBUG" },
  80         { "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
  81                                 G_OPTION_ARG_NONE, &option_detach,
  82                                 "Don't fork daemon to background" },
  83         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
  84                                 "Specify plugins to load", "NAME,..." },
  85         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
  86                                 "Specify plugins not to load", "NAME,..." },
  87         { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
  88                                 "Show version information and exit" },
  89         { NULL },
  90 };
  91
  92 int main(int argc, char *argv[])
  93 {
  94         GOptionContext *context;
  95         GError *error = NULL;
  96         DBusConnection *conn;
  97         DBusError err;
  98         struct sigaction sa;
  99
 100         context = g_option_context_new(NULL);
 101         g_option_context_add_main_entries(context, options, NULL);
 102
 103         if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
 104                 if (error != NULL) {
 105                         g_printerr("%s\n", error->message);
 106                         g_error_free(error);
 107                 } else
 108                         g_printerr("An unknown error occurred\n");
 109                 exit(1);
 110         }
 111
 112         g_option_context_free(context);
 113
 114         if (option_version == TRUE) {
 115                 printf("%s\n", VERSION);
 116                 exit(0);
 117         }
 118
 119         if (option_detach == TRUE) {
 120                 if (daemon(0, 0)) {
 121                         perror("Can't start daemon");
 122                         exit(1);
 123                 }
 124         }
 125
 126         main_loop = g_main_loop_new(NULL, FALSE);
 127
 128         dbus_error_init(&err);
 129
 130         conn = g_dbus_setup_bus(DBUS_BUS_SESSION, NFC_SERVICE, &err);
 131         if (conn == NULL) {
 132                 if (dbus_error_is_set(&err) == TRUE) {
 133                         fprintf(stderr, "%s\n", err.message);
 134                         dbus_error_free(&err);
 135                 } else
 136                         fprintf(stderr, "Can't register with session bus\n");
 137                 exit(1);
 138         }
 139
 140         g_dbus_set_disconnect_function(conn, disconnect_callback, NULL, NULL);
 141
 142         __near_log_init(option_debug, option_detach);
 143         __near_dbus_init(conn);
 144
 145         __near_netlink_init();
 146         __near_target_init();
 147         __near_adapter_init();
 148         __near_manager_init(conn);
 149
 150         __near_plugin_init(option_plugin, option_noplugin);
 151
 152         memset(&sa, 0, sizeof(sa));
 153         sa.sa_handler = sig_term;
 154         sigaction(SIGINT, &sa, NULL);
 155         sigaction(SIGTERM, &sa, NULL);
 156
 157         g_main_loop_run(main_loop);
 158
 159         __near_plugin_cleanup();
 160
 161         __near_manager_cleanup();
 162         __near_adapter_cleanup();
 163         __near_target_cleanup();
 164         __near_netlink_cleanup();
 165
 166         __near_dbus_cleanup();
 167         __near_log_cleanup();
 168
 169         dbus_connection_unref(conn);
 170
 171         g_main_loop_unref(main_loop);
 172
 173         return 0;
 174 }