audio/main.c

   1 /*
   2  *
   3  *  BlueZ - Bluetooth protocol stack for Linux
   4  *
   5  *  Copyright (C) 2006-2010  Nokia Corporation
   6  *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
   7  *
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  22  *
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <errno.h>
  30 #include <sys/socket.h>
  31 #include <unistd.h>
  32 #include <fcntl.h>
  33 #include <bluetooth/bluetooth.h>
  34 #include <bluetooth/sdp.h>
  35 #include <bluetooth/sdp_lib.h>
  36
  37 #include <glib.h>
  38 #include <dbus/dbus.h>
  39
  40 #include "glib-helper.h"
  41 #include "btio.h"
  42 #include "plugin.h"
  43 #include "log.h"
  44 #include "device.h"
  45 #include "headset.h"
  46 #include "manager.h"
  47 #include "gateway.h"
  48
  49 static GIOChannel *sco_server = NULL;
  50
  51 static GKeyFile *load_config_file(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                 error("Parsing %s failed: %s", file, err->message);
  62                 g_error_free(err);
  63                 g_key_file_free(keyfile);
  64                 return NULL;
  65         }
  66
  67         return keyfile;
  68 }
  69
  70 static void sco_server_cb(GIOChannel *chan, GError *err, gpointer data)
  71 {
  72         int sk;
  73         struct audio_device *device;
  74         char addr[18];
  75         bdaddr_t src, dst;
  76
  77         if (err) {
  78                 error("sco_server_cb: %s", err->message);
  79                 return;
  80         }
  81
  82         bt_io_get(chan, BT_IO_SCO, &err,
  83                         BT_IO_OPT_SOURCE_BDADDR, &src,
  84                         BT_IO_OPT_DEST_BDADDR, &dst,
  85                         BT_IO_OPT_DEST, addr,
  86                         BT_IO_OPT_INVALID);
  87         if (err) {
  88                 error("bt_io_get: %s", err->message);
  89                 goto drop;
  90         }
  91
  92         device = manager_find_device(NULL, &src, &dst, AUDIO_HEADSET_INTERFACE,
  93                                         FALSE);
  94         if (!device)
  95                 device = manager_find_device(NULL, &src, &dst,
  96                                                 AUDIO_GATEWAY_INTERFACE,
  97                                                 FALSE);
  98
  99         if (!device)
 100                 goto drop;
 101
 102         if (device->headset) {
 103                 if (headset_get_state(device) < HEADSET_STATE_CONNECTED) {
 104                         DBG("Refusing SCO from non-connected headset");
 105                         goto drop;
 106                 }
 107
 108                 if (!headset_get_hfp_active(device)) {
 109                         error("Refusing non-HFP SCO connect attempt from %s",
 110                                                                         addr);
 111                         goto drop;
 112                 }
 113
 114                 if (headset_connect_sco(device, chan) < 0)
 115                         goto drop;
 116
 117                 headset_set_state(device, HEADSET_STATE_PLAYING);
 118         } else if (device->gateway) {
 119                 if (!gateway_is_connected(device)) {
 120                         DBG("Refusing SCO from non-connected AG");
 121                         goto drop;
 122                 }
 123
 124                 if (gateway_connect_sco(device, chan) < 0)
 125                         goto drop;
 126         } else
 127                 goto drop;
 128
 129         sk = g_io_channel_unix_get_fd(chan);
 130         fcntl(sk, F_SETFL, 0);
 131
 132         DBG("Accepted SCO connection from %s", addr);
 133
 134         return;
 135
 136 drop:
 137         g_io_channel_shutdown(chan, TRUE, NULL);
 138 }
 139
 140 static DBusConnection *connection;
 141
 142 static int audio_init(void)
 143 {
 144         GKeyFile *config;
 145         gboolean enable_sco;
 146
 147         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 148         if (connection == NULL)
 149                 return -EIO;
 150
 151         config = load_config_file(CONFIGDIR "/audio.conf");
 152
 153         if (audio_manager_init(connection, config, &enable_sco) < 0)
 154                 goto failed;
 155
 156         if (!enable_sco)
 157                 return 0;
 158
 159         sco_server = bt_io_listen(BT_IO_SCO, sco_server_cb, NULL, NULL,
 160                                         NULL, NULL,
 161                                         BT_IO_OPT_INVALID);
 162         if (!sco_server) {
 163                 error("Unable to start SCO server socket");
 164                 goto failed;
 165         }
 166
 167         return 0;
 168
 169 failed:
 170         audio_manager_exit();
 171
 172         if (connection) {
 173                 dbus_connection_unref(connection);
 174                 connection = NULL;
 175         }
 176
 177         return -EIO;
 178 }
 179
 180 static void audio_exit(void)
 181 {
 182         if (sco_server) {
 183                 g_io_channel_shutdown(sco_server, TRUE, NULL);
 184                 g_io_channel_unref(sco_server);
 185                 sco_server = NULL;
 186         }
 187
 188         audio_manager_exit();
 189
 190         dbus_connection_unref(connection);
 191 }
 192
 193 BLUETOOTH_PLUGIN_DEFINE(audio, VERSION,
 194                         BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, audio_init, audio_exit)