/* Handle CMD_GET_PLIST. Return 0 on error. */
static int get_client_plist (struct client *cli)
{
int first;
debug ("Client with fd %d requests the playlist", cli->socket);
/* Find the first connected client, and ask it to send the playlist.
* Here, send 1 if there is a client with the playlist, or 0 if there
* isn't. */
cli->requests_plist = 1;
first = find_sending_plist ();
if (first == -1) {
debug ("No clients with the playlist");
cli->requests_plist = 0;
if (!send_data_int(cli, 0))
return 0;
return 1;
}
if (!send_data_int(cli, 1))
return 0;
if (!send_int(clients[first].socket, EV_SEND_PLIST))
return 0;
return 1;
}
/* Send the unique number to the client. Return 0 on error. */
static int send_serial (struct client *cli)
{
if (!send_data_int(cli, gen_serial(cli))) {
logit ("Error when sending serial");
return 0;
}
return 1;
}
/* Send requested option value to the client. Return 1 if OK. */
static int send_option (struct client *cli)
{
char *name;
if (!(name = get_str(cli->socket)))
return 0;
/* We can send only a few options, others make no sense here. */
if (!valid_sync_option(name)) {
logit ("Client wanted to get invalid option '%s'", name);
free (name);
return 0;
}
/* All supported options are integer type. */
if (!send_data_int(cli, options_get_int(name))) {
free (name);
return 0;
}
free (name);
return 1;
}
/* Receive a command from the client and execute it. */
static void handle_command (const int client_id)
{
int cmd;
int err = 0;
struct client *cli = &clients[client_id];
if (!get_int(cli->socket, &cmd)) {
logit ("Failed to get command from the client");
close (cli->socket);
del_client (cli);
return;
}
switch (cmd) {
case CMD_QUIT:
logit ("Exit request from the client");
close (cli->socket);
del_client (cli);
server_quit = 1;
break;
case CMD_LIST_CLEAR:
logit ("Clearing the list");
audio_plist_clear ();
break;
case CMD_LIST_ADD:
if (!req_list_add(cli))
err = 1;
break;
case CMD_PLAY:
if (!req_play(cli))
err = 1;
break;
case CMD_DISCONNECT:
logit ("Client disconnected");
close (cli->socket);
del_client (cli);
break;
case CMD_PAUSE:
audio_pause ();
break;
case CMD_UNPAUSE:
audio_unpause ();
break;
case CMD_STOP:
audio_stop ();
break;
case CMD_GET_CTIME:
if (!send_data_int(cli, MAX(0, audio_get_time())))
err = 1;
break;
case CMD_SEEK:
if (!req_seek(cli))
err = 1;
break;
case CMD_JUMP_TO:
if (!req_jump_to(cli))
err = 1;
break;
case CMD_GET_SNAME:
if (!send_sname(cli))
err = 1;
break;
case CMD_GET_STATE:
if (!send_data_int(cli, audio_get_state()))
err = 1;
break;
case CMD_GET_BITRATE:
if (!send_data_int(cli, sound_info.bitrate))
err = 1;
break;
case CMD_GET_AVG_BITRATE:
if (!send_data_int(cli, sound_info.avg_bitrate))
err = 1;
break;
case CMD_GET_RATE:
if (!send_data_int(cli, sound_info.rate))
err = 1;
break;
case CMD_GET_CHANNELS:
if (!send_data_int(cli, sound_info.channels))
err = 1;
break;
case CMD_NEXT:
audio_next ();
break;
case CMD_PREV:
audio_prev ();
break;
case CMD_PING:
if (!send_int(cli->socket, EV_PONG))
err = 1;
break;
case CMD_GET_OPTION:
if (!send_option(cli))
err = 1;
break;
case CMD_SET_OPTION:
if (!get_set_option(cli))
err = 1;
break;
case CMD_GET_MIXER:
if (!send_data_int(cli, audio_get_mixer()))
err = 1;
break;
case CMD_SET_MIXER:
if (!set_mixer(cli))
err = 1;
break;
case CMD_DELETE:
if (!delete_item(cli))
err = 1;
break;
case CMD_SEND_PLIST_EVENTS:
cli->wants_plist_events = 1;
logit ("Request for events");
break;
case CMD_GET_PLIST:
if (!get_client_plist(cli))
err = 1;
break;
case CMD_SEND_PLIST:
if (!req_send_plist(cli))
err = 1;
break;
case CMD_CAN_SEND_PLIST:
cli->can_send_plist = 1;
break;
case CMD_CLI_PLIST_ADD:
case CMD_CLI_PLIST_DEL:
case CMD_CLI_PLIST_CLEAR:
case CMD_CLI_PLIST_MOVE:
if (!plist_sync_cmd(cli, cmd))
err = 1;
break;
case CMD_LOCK:
if (!client_lock(cli))
err = 1;
break;
case CMD_UNLOCK:
if (!client_unlock(cli))
err = 1;
break;
case CMD_GET_SERIAL:
if (!send_serial(cli))
err = 1;
break;
case CMD_PLIST_GET_SERIAL:
if (!req_plist_get_serial(cli))
err = 1;
break;
case CMD_PLIST_SET_SERIAL:
if (!req_plist_set_serial(cli))
err = 1;
break;
case CMD_GET_TAGS:
if (!req_get_tags(cli))
err = 1;
break;
case CMD_TOGGLE_MIXER_CHANNEL:
req_toggle_mixer_channel ();
break;
case CMD_TOGGLE_SOFTMIXER:
req_toggle_softmixer ();
break;
case CMD_GET_MIXER_CHANNEL_NAME:
if (!req_get_mixer_channel_name(cli))
err = 1;
break;
case CMD_GET_FILE_TAGS:
if (!get_file_tags(client_id))
err = 1;
break;
case CMD_ABORT_TAGS_REQUESTS:
if (!abort_tags_requests(client_id))
err = 1;
break;
case CMD_LIST_MOVE:
if (!req_list_move(cli))
err = 1;
break;
case CMD_TOGGLE_EQUALIZER:
req_toggle_equalizer();
break;
case CMD_EQUALIZER_REFRESH:
req_equalizer_refresh();
break;
case CMD_EQUALIZER_PREV:
req_equalizer_prev();
break;
case CMD_EQUALIZER_NEXT:
req_equalizer_next();
break;
case CMD_TOGGLE_MAKE_MONO:
req_toggle_make_mono();
break;
case CMD_QUEUE_ADD:
if (!req_queue_add(cli))
err = 1;
break;
case CMD_QUEUE_DEL:
if (!req_queue_del(cli))
err = 1;
break;
case CMD_QUEUE_CLEAR:
logit ("Clearing the queue");
audio_queue_clear ();
add_event_all (EV_QUEUE_CLEAR, NULL);
break;
case CMD_QUEUE_MOVE:
if (!req_queue_move(cli))
err = 1;
break;
case CMD_GET_QUEUE:
if (!req_send_queue(cli))
err = 1;
break;
default:
logit ("Bad command (0x%x) from the client", cmd);
err = 1;
}
if (err) {
logit ("Closing client connection due to error");
close (cli->socket);
del_client (cli);
}
}
/* Handle CMD_PLIST_GET_SERIAL. Return 0 on error. */
static int req_plist_get_serial (struct client *cli)
{
if (!send_data_int(cli, audio_plist_get_serial()))
return 0;
return 1;
}
