src/mpdclient.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "mpdclient.h"
  21 #include "filelist.h"
  22 #include "screen_client.h"
  23 #include "config.h"
  24 #include "options.h"
  25 #include "strfsong.h"
  26 #include "utils.h"
  27 #include "gidle.h"
  28
  29 #include <mpd/client.h>
  30
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <time.h>
  34 #include <string.h>
  35
  36 #define BUFSIZE 1024
  37
  38 /* sort by list-format */
  39 gint
  40 compare_filelistentry_format(gconstpointer filelist_entry1,
  41                              gconstpointer filelist_entry2)
  42 {
  43         const struct mpd_entity *e1, *e2;
  44         char key1[BUFSIZE], key2[BUFSIZE];
  45         int n = 0;
  46
  47         e1 = ((const struct filelist_entry *)filelist_entry1)->entity;
  48         e2 = ((const struct filelist_entry *)filelist_entry2)->entity;
  49
  50         if (e1 && e2 &&
  51             mpd_entity_get_type(e1) == MPD_ENTITY_TYPE_SONG &&
  52             mpd_entity_get_type(e2) == MPD_ENTITY_TYPE_SONG) {
  53                 strfsong(key1, BUFSIZE, options.list_format, mpd_entity_get_song(e1));
  54                 strfsong(key2, BUFSIZE, options.list_format, mpd_entity_get_song(e2));
  55                 n = strcmp(key1,key2);
  56         }
  57
  58         return n;
  59 }
  60
  61
  62 /****************************************************************************/
  63 /*** mpdclient functions ****************************************************/
  64 /****************************************************************************/
  65
  66 bool
  67 mpdclient_handle_error(struct mpdclient *c)
  68 {
  69         enum mpd_error error = mpd_connection_get_error(c->connection);
  70
  71         assert(error != MPD_ERROR_SUCCESS);
  72
  73         if (error == MPD_ERROR_SERVER &&
  74             mpd_connection_get_server_error(c->connection) == MPD_SERVER_ERROR_PERMISSION &&
  75             screen_auth(c))
  76                 return true;
  77
  78         mpdclient_ui_error(mpd_connection_get_error_message(c->connection));
  79
  80         if (!mpd_connection_clear_error(c->connection))
  81                 mpdclient_disconnect(c);
  82
  83         return false;
  84 }
  85
  86 static bool
  87 mpdclient_finish_command(struct mpdclient *c)
  88 {
  89         return mpd_response_finish(c->connection)
  90                 ? true : mpdclient_handle_error(c);
  91 }
  92
  93 struct mpdclient *
  94 mpdclient_new(void)
  95 {
  96         struct mpdclient *c;
  97
  98         c = g_new0(struct mpdclient, 1);
  99         playlist_init(&c->playlist);
 100         c->volume = -1;
 101         c->events = 0;
 102
 103         return c;
 104 }
 105
 106 void
 107 mpdclient_free(struct mpdclient *c)
 108 {
 109         mpdclient_disconnect(c);
 110
 111         mpdclient_playlist_free(&c->playlist);
 112
 113         g_free(c);
 114 }
 115
 116 void
 117 mpdclient_disconnect(struct mpdclient *c)
 118 {
 119         if (c->source != NULL) {
 120                 mpd_glib_free(c->source);
 121                 c->source = NULL;
 122                 c->idle = false;
 123         }
 124
 125         if (c->connection)
 126                 mpd_connection_free(c->connection);
 127         c->connection = NULL;
 128
 129         if (c->status)
 130                 mpd_status_free(c->status);
 131         c->status = NULL;
 132
 133         playlist_clear(&c->playlist);
 134
 135         if (c->song)
 136                 c->song = NULL;
 137
 138         /* everything has changed after a disconnect */
 139         c->events |= MPD_IDLE_DATABASE|MPD_IDLE_STORED_PLAYLIST|
 140                 MPD_IDLE_QUEUE|MPD_IDLE_PLAYER|MPD_IDLE_MIXER|MPD_IDLE_OUTPUT|
 141                 MPD_IDLE_OPTIONS|MPD_IDLE_UPDATE;
 142 }
 143
 144 bool
 145 mpdclient_connect(struct mpdclient *c,
 146                   const gchar *host,
 147                   gint port,
 148                   gfloat _timeout,
 149                   const gchar *password)
 150 {
 151         /* close any open connection */
 152         if( c->connection )
 153                 mpdclient_disconnect(c);
 154
 155         /* connect to MPD */
 156         c->connection = mpd_connection_new(host, port, _timeout * 1000);
 157         if (c->connection == NULL)
 158                 g_error("Out of memory");
 159
 160         if (mpd_connection_get_error(c->connection) != MPD_ERROR_SUCCESS) {
 161                 mpdclient_handle_error(c);
 162                 mpdclient_disconnect(c);
 163                 return false;
 164         }
 165
 166         /* send password */
 167         if (password != NULL && !mpd_run_password(c->connection, password)) {
 168                 mpdclient_handle_error(c);
 169                 mpdclient_disconnect(c);
 170                 return false;
 171         }
 172
 173         return true;
 174 }
 175
 176 bool
 177 mpdclient_update(struct mpdclient *c)
 178 {
 179         struct mpd_connection *connection = mpdclient_get_connection(c);
 180         bool retval;
 181
 182         c->volume = -1;
 183
 184         if (connection == NULL)
 185                 return false;
 186
 187         /* always announce these options as long as we don't have
 188            "idle" support */
 189         if (c->source == NULL)
 190                 c->events |= MPD_IDLE_PLAYER|MPD_IDLE_OPTIONS;
 191
 192         /* free the old status */
 193         if (c->status)
 194                 mpd_status_free(c->status);
 195
 196         /* retrieve new status */
 197         c->status = mpd_run_status(connection);
 198         if (c->status == NULL)
 199                 return mpdclient_handle_error(c);
 200
 201         if (c->source == NULL &&
 202             c->update_id != mpd_status_get_update_id(c->status)) {
 203                 c->events |= MPD_IDLE_UPDATE;
 204
 205                 if (c->update_id > 0)
 206                         c->events |= MPD_IDLE_DATABASE;
 207         }
 208
 209         c->update_id = mpd_status_get_update_id(c->status);
 210
 211         if (c->source == NULL &&
 212             c->volume != mpd_status_get_volume(c->status))
 213                 c->events |= MPD_IDLE_MIXER;
 214
 215         c->volume = mpd_status_get_volume(c->status);
 216
 217         /* check if the playlist needs an update */
 218         if (c->playlist.version != mpd_status_get_queue_version(c->status)) {
 219                 if (c->source == NULL)
 220                         c->events |= MPD_IDLE_PLAYLIST;
 221
 222                 if (!playlist_is_empty(&c->playlist))
 223                         retval = mpdclient_playlist_update_changes(c);
 224                 else
 225                         retval = mpdclient_playlist_update(c);
 226         } else
 227                 retval = true;
 228
 229         /* update the current song */
 230         if (!c->song || mpd_status_get_song_id(c->status)) {
 231                 c->song = playlist_get_song(&c->playlist,
 232                                             mpd_status_get_song_pos(c->status));
 233         }
 234
 235         return retval;
 236 }
 237
 238 struct mpd_connection *
 239 mpdclient_get_connection(struct mpdclient *c)
 240 {
 241         if (c->source != NULL && c->idle) {
 242                 c->idle = false;
 243                 mpd_glib_leave(c->source);
 244         }
 245
 246         return c->connection;
 247 }
 248
 249 void
 250 mpdclient_put_connection(struct mpdclient *c)
 251 {
 252         assert(c->source == NULL || c->connection != NULL);
 253
 254         if (c->source != NULL && !c->idle) {
 255                 c->idle = mpd_glib_enter(c->source);
 256         }
 257 }
 258
 259
 260 /****************************************************************************/
 261 /*** MPD Commands  **********************************************************/
 262 /****************************************************************************/
 263
 264 bool
 265 mpdclient_cmd_play(struct mpdclient *c, gint idx)
 266 {
 267         struct mpd_connection *connection = mpdclient_get_connection(c);
 268         const struct mpd_song *song = playlist_get_song(&c->playlist, idx);
 269
 270         if (connection == NULL)
 271                 return false;
 272
 273         if (song)
 274                 mpd_send_play_id(connection, mpd_song_get_id(song));
 275         else
 276                 mpd_send_play(connection);
 277
 278         return mpdclient_finish_command(c);
 279 }
 280
 281 bool
 282 mpdclient_cmd_crop(struct mpdclient *c)
 283 {
 284         struct mpd_connection *connection = mpdclient_get_connection(c);
 285         struct mpd_status *status;
 286         bool playing;
 287         int length, current;
 288
 289         if (connection == NULL)
 290                 return false;
 291
 292         status = mpd_run_status(connection);
 293         if (status == NULL)
 294                 return mpdclient_handle_error(c);
 295
 296         playing = mpd_status_get_state(status) == MPD_STATE_PLAY ||
 297                 mpd_status_get_state(status) == MPD_STATE_PAUSE;
 298         length = mpd_status_get_queue_length(status);
 299         current = mpd_status_get_song_pos(status);
 300
 301         mpd_status_free(status);
 302
 303         if (!playing || length < 2)
 304                 return true;
 305
 306         mpd_command_list_begin(connection, false);
 307
 308         while (--length >= 0)
 309                 if (length != current)
 310                         mpd_send_delete(connection, length);
 311
 312         mpd_command_list_end(connection);
 313
 314         return mpdclient_finish_command(c);
 315 }
 316
 317 bool
 318 mpdclient_cmd_clear(struct mpdclient *c)
 319 {
 320         struct mpd_connection *connection = mpdclient_get_connection(c);
 321         bool retval;
 322
 323         if (connection == NULL)
 324                 return false;
 325
 326         mpd_send_clear(connection);
 327         retval = mpdclient_finish_command(c);
 328
 329         if (retval)
 330                 c->events |= MPD_IDLE_PLAYLIST;
 331
 332         return retval;
 333 }
 334
 335 bool
 336 mpdclient_cmd_volume(struct mpdclient *c, gint value)
 337 {
 338         struct mpd_connection *connection = mpdclient_get_connection(c);
 339         if (connection == NULL)
 340                 return false;
 341
 342         mpd_send_set_volume(connection, value);
 343         return mpdclient_finish_command(c);
 344 }
 345
 346 bool
 347 mpdclient_cmd_volume_up(struct mpdclient *c)
 348 {
 349         struct mpd_connection *connection = mpdclient_get_connection(c);
 350         if (connection == NULL)
 351                 return false;
 352
 353         if (c->status == NULL ||
 354             mpd_status_get_volume(c->status) == -1)
 355                 return true;
 356
 357         if (c->volume < 0)
 358                 c->volume = mpd_status_get_volume(c->status);
 359
 360         if (c->volume >= 100)
 361                 return true;
 362
 363         return mpdclient_cmd_volume(c, ++c->volume);
 364 }
 365
 366 bool
 367 mpdclient_cmd_volume_down(struct mpdclient *c)
 368 {
 369         struct mpd_connection *connection = mpdclient_get_connection(c);
 370         if (connection == NULL)
 371                 return false;
 372
 373         if (c->status == NULL || mpd_status_get_volume(c->status) < 0)
 374                 return true;
 375
 376         if (c->volume < 0)
 377                 c->volume = mpd_status_get_volume(c->status);
 378
 379         if (c->volume <= 0)
 380                 return true;
 381
 382         return mpdclient_cmd_volume(c, --c->volume);
 383 }
 384
 385 bool
 386 mpdclient_cmd_add_path(struct mpdclient *c, const gchar *path_utf8)
 387 {
 388         struct mpd_connection *connection = mpdclient_get_connection(c);
 389         if (connection == NULL)
 390                 return false;
 391
 392         mpd_send_add(connection, path_utf8);
 393         return mpdclient_finish_command(c);
 394 }
 395
 396 bool
 397 mpdclient_cmd_add(struct mpdclient *c, const struct mpd_song *song)
 398 {
 399         struct mpd_connection *connection = mpdclient_get_connection(c);
 400         struct mpd_status *status;
 401         struct mpd_song *new_song;
 402
 403         assert(c != NULL);
 404         assert(song != NULL);
 405
 406         if (connection == NULL || c->status == NULL)
 407                 return false;
 408
 409         /* send the add command to mpd; at the same time, get the new
 410            status (to verify the new playlist id) and the last song
 411            (we hope that's the song we just added) */
 412
 413         if (!mpd_command_list_begin(connection, true) ||
 414             !mpd_send_add(connection, mpd_song_get_uri(song)) ||
 415             !mpd_send_status(connection) ||
 416             !mpd_send_get_queue_song_pos(connection,
 417                                          playlist_length(&c->playlist)) ||
 418             !mpd_command_list_end(connection) ||
 419             !mpd_response_next(connection))
 420                 return mpdclient_handle_error(c);
 421
 422         c->events |= MPD_IDLE_PLAYLIST;
 423
 424         status = mpd_recv_status(connection);
 425         if (status != NULL) {
 426                 if (c->status != NULL)
 427                         mpd_status_free(c->status);
 428                 c->status = status;
 429         }
 430
 431         if (!mpd_response_next(connection))
 432                 return mpdclient_handle_error(c);
 433
 434         new_song = mpd_recv_song(connection);
 435         if (!mpd_response_finish(connection) || new_song == NULL) {
 436                 if (new_song != NULL)
 437                         mpd_song_free(new_song);
 438
 439                 return mpd_connection_clear_error(connection) ||
 440                         mpdclient_handle_error(c);
 441         }
 442
 443         if (mpd_status_get_queue_length(status) == playlist_length(&c->playlist) + 1 &&
 444             mpd_status_get_queue_version(status) == c->playlist.version + 1) {
 445                 /* the cheap route: match on the new playlist length
 446                    and its version, we can keep our local playlist
 447                    copy in sync */
 448                 c->playlist.version = mpd_status_get_queue_version(status);
 449
 450                 /* the song we just received has the correct id;
 451                    append it to the local playlist */
 452                 playlist_append(&c->playlist, new_song);
 453         }
 454
 455         mpd_song_free(new_song);
 456
 457         return true;
 458 }
 459
 460 bool
 461 mpdclient_cmd_delete(struct mpdclient *c, gint idx)
 462 {
 463         struct mpd_connection *connection = mpdclient_get_connection(c);
 464         const struct mpd_song *song;
 465         struct mpd_status *status;
 466
 467         if (connection == NULL || c->status == NULL)
 468                 return false;
 469
 470         if (idx < 0 || (guint)idx >= playlist_length(&c->playlist))
 471                 return false;
 472
 473         song = playlist_get(&c->playlist, idx);
 474
 475         /* send the delete command to mpd; at the same time, get the
 476            new status (to verify the playlist id) */
 477
 478         if (!mpd_command_list_begin(connection, false) ||
 479             !mpd_send_delete_id(connection, mpd_song_get_id(song)) ||
 480             !mpd_send_status(connection) ||
 481             !mpd_command_list_end(connection))
 482                 return mpdclient_handle_error(c);
 483
 484         c->events |= MPD_IDLE_PLAYLIST;
 485
 486         status = mpd_recv_status(connection);
 487         if (status != NULL) {
 488                 if (c->status != NULL)
 489                         mpd_status_free(c->status);
 490                 c->status = status;
 491         }
 492
 493         if (!mpd_response_finish(connection))
 494                 return mpdclient_handle_error(c);
 495
 496         if (mpd_status_get_queue_length(status) == playlist_length(&c->playlist) - 1 &&
 497             mpd_status_get_queue_version(status) == c->playlist.version + 1) {
 498                 /* the cheap route: match on the new playlist length
 499                    and its version, we can keep our local playlist
 500                    copy in sync */
 501                 c->playlist.version = mpd_status_get_queue_version(status);
 502
 503                 /* remove the song from the local playlist */
 504                 playlist_remove(&c->playlist, idx);
 505
 506                 /* remove references to the song */
 507                 if (c->song == song)
 508                         c->song = NULL;
 509         }
 510
 511         return true;
 512 }
 513
 514 /**
 515  * Fallback for mpdclient_cmd_delete_range() on MPD older than 0.16.
 516  * It emulates the "delete range" command with a list of simple
 517  * "delete" commands.
 518  */
 519 static bool
 520 mpdclient_cmd_delete_range_fallback(struct mpdclient *c,
 521                                     unsigned start, unsigned end)
 522 {
 523         struct mpd_connection *connection = mpdclient_get_connection(c);
 524         if (connection == NULL)
 525                 return false;
 526
 527         if (!mpd_command_list_begin(connection, false))
 528                 return mpdclient_handle_error(c);
 529
 530         for (; start < end; --end)
 531                 mpd_send_delete(connection, start);
 532
 533         if (!mpd_command_list_end(connection) ||
 534             !mpd_response_finish(connection))
 535                 return mpdclient_handle_error(c);
 536
 537         return true;
 538 }
 539
 540 bool
 541 mpdclient_cmd_delete_range(struct mpdclient *c, unsigned start, unsigned end)
 542 {
 543         struct mpd_connection *connection;
 544         struct mpd_status *status;
 545
 546         if (end == start + 1)
 547                 /* if that's not really a range, we choose to use the
 548                    safer "deleteid" version */
 549                 return mpdclient_cmd_delete(c, start);
 550
 551         connection = mpdclient_get_connection(c);
 552         if (connection == NULL)
 553                 return false;
 554
 555         if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0)
 556                 return mpdclient_cmd_delete_range_fallback(c, start, end);
 557
 558         /* MPD 0.16 supports "delete" with a range argument */
 559
 560         /* send the delete command to mpd; at the same time, get the
 561            new status (to verify the playlist id) */
 562
 563         if (!mpd_command_list_begin(connection, false) ||
 564             !mpd_send_delete_range(connection, start, end) ||
 565             !mpd_send_status(connection) ||
 566             !mpd_command_list_end(connection))
 567                 return mpdclient_handle_error(c);
 568
 569         c->events |= MPD_IDLE_PLAYLIST;
 570
 571         status = mpd_recv_status(connection);
 572         if (status != NULL) {
 573                 if (c->status != NULL)
 574                         mpd_status_free(c->status);
 575                 c->status = status;
 576         }
 577
 578         if (!mpd_response_finish(connection))
 579                 return mpdclient_handle_error(c);
 580
 581         if (mpd_status_get_queue_length(status) == playlist_length(&c->playlist) - (end - start) &&
 582             mpd_status_get_queue_version(status) == c->playlist.version + 1) {
 583                 /* the cheap route: match on the new playlist length
 584                    and its version, we can keep our local playlist
 585                    copy in sync */
 586                 c->playlist.version = mpd_status_get_queue_version(status);
 587
 588                 /* remove the song from the local playlist */
 589                 while (end > start) {
 590                         --end;
 591
 592                         /* remove references to the song */
 593                         if (c->song == playlist_get(&c->playlist, end))
 594                                 c->song = NULL;
 595
 596                         playlist_remove(&c->playlist, end);
 597                 }
 598         }
 599
 600         return true;
 601 }
 602
 603 bool
 604 mpdclient_cmd_move(struct mpdclient *c, gint old_index, gint new_index)
 605 {
 606         struct mpd_connection *connection = mpdclient_get_connection(c);
 607         const struct mpd_song *song1, *song2;
 608         struct mpd_status *status;
 609
 610         if (connection == NULL)
 611                 return false;
 612
 613         if (old_index == new_index || new_index < 0 ||
 614             (guint)new_index >= c->playlist.list->len)
 615                 return false;
 616
 617         song1 = playlist_get(&c->playlist, old_index);
 618         song2 = playlist_get(&c->playlist, new_index);
 619
 620         /* send the delete command to mpd; at the same time, get the
 621            new status (to verify the playlist id) */
 622
 623         if (!mpd_command_list_begin(connection, false) ||
 624             !mpd_send_swap_id(connection, mpd_song_get_id(song1),
 625                               mpd_song_get_id(song2)) ||
 626             !mpd_send_status(connection) ||
 627             !mpd_command_list_end(connection))
 628                 return mpdclient_handle_error(c);
 629
 630         c->events |= MPD_IDLE_PLAYLIST;
 631
 632         status = mpd_recv_status(connection);
 633         if (status != NULL) {
 634                 if (c->status != NULL)
 635                         mpd_status_free(c->status);
 636                 c->status = status;
 637         }
 638
 639         if (!mpd_response_finish(connection))
 640                 return mpdclient_handle_error(c);
 641
 642         if (mpd_status_get_queue_length(status) == playlist_length(&c->playlist) &&
 643             mpd_status_get_queue_version(status) == c->playlist.version + 1) {
 644                 /* the cheap route: match on the new playlist length
 645                    and its version, we can keep our local playlist
 646                    copy in sync */
 647                 c->playlist.version = mpd_status_get_queue_version(status);
 648
 649                 /* swap songs in the local playlist */
 650                 playlist_swap(&c->playlist, old_index, new_index);
 651         }
 652
 653         return true;
 654 }
 655
 656
 657 /****************************************************************************/
 658 /*** Playlist management functions ******************************************/
 659 /****************************************************************************/
 660
 661 /* update playlist */
 662 bool
 663 mpdclient_playlist_update(struct mpdclient *c)
 664 {
 665         struct mpd_connection *connection = mpdclient_get_connection(c);
 666         struct mpd_entity *entity;
 667
 668         if (connection == NULL)
 669                 return false;
 670
 671         playlist_clear(&c->playlist);
 672
 673         mpd_send_list_queue_meta(connection);
 674         while ((entity = mpd_recv_entity(connection))) {
 675                 if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 676                         playlist_append(&c->playlist, mpd_entity_get_song(entity));
 677
 678                 mpd_entity_free(entity);
 679         }
 680
 681         c->playlist.version = mpd_status_get_queue_version(c->status);
 682         c->song = NULL;
 683
 684         return mpdclient_finish_command(c);
 685 }
 686
 687 /* update playlist (plchanges) */
 688 bool
 689 mpdclient_playlist_update_changes(struct mpdclient *c)
 690 {
 691         struct mpd_connection *connection = mpdclient_get_connection(c);
 692         struct mpd_song *song;
 693         guint length;
 694
 695         if (connection == NULL)
 696                 return false;
 697
 698         mpd_send_queue_changes_meta(connection, c->playlist.version);
 699
 700         while ((song = mpd_recv_song(connection)) != NULL) {
 701                 int pos = mpd_song_get_pos(song);
 702
 703                 if (pos >= 0 && (guint)pos < c->playlist.list->len) {
 704                         /* update song */
 705                         playlist_replace(&c->playlist, pos, song);
 706                 } else {
 707                         /* add a new song */
 708                         playlist_append(&c->playlist, song);
 709                 }
 710
 711                 mpd_song_free(song);
 712         }
 713
 714         /* remove trailing songs */
 715
 716         length = mpd_status_get_queue_length(c->status);
 717         while (length < c->playlist.list->len) {
 718                 guint pos = c->playlist.list->len - 1;
 719
 720                 /* Remove the last playlist entry */
 721                 playlist_remove(&c->playlist, pos);
 722         }
 723
 724         c->song = NULL;
 725         c->playlist.version = mpd_status_get_queue_version(c->status);
 726
 727         return mpdclient_finish_command(c);
 728 }
 729
 730
 731 /****************************************************************************/
 732 /*** Filelist functions *****************************************************/
 733 /****************************************************************************/
 734
 735 bool
 736 mpdclient_filelist_add_all(struct mpdclient *c, struct filelist *fl)
 737 {
 738         struct mpd_connection *connection = mpdclient_get_connection(c);
 739         guint i;
 740
 741         if (connection == NULL)
 742                 return false;
 743
 744         if (filelist_is_empty(fl))
 745                 return true;
 746
 747         mpd_command_list_begin(connection, false);
 748
 749         for (i = 0; i < filelist_length(fl); ++i) {
 750                 struct filelist_entry *entry = filelist_get(fl, i);
 751                 struct mpd_entity *entity  = entry->entity;
 752
 753                 if (entity != NULL &&
 754                     mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
 755                         const struct mpd_song *song =
 756                                 mpd_entity_get_song(entity);
 757
 758                         mpd_send_add(connection, mpd_song_get_uri(song));
 759                 }
 760         }
 761
 762         mpd_command_list_end(connection);
 763         return mpdclient_finish_command(c);
 764 }