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[vlc.git] / modules / misc / audioscrobbler.c
blob4799a9ef4993dbe2ab8350bbdf9d37437141336d
1 /*****************************************************************************
2 * audioscrobbler.c : audioscrobbler submission plugin
3 *****************************************************************************
4 * Copyright © 2006-2011 the VideoLAN team
5 * $Id$
6 *
7 * Author: Rafaël Carré <funman at videolanorg>
8 * Ilkka Ollakka <ileoo at videolan org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
24
25 /* audioscrobbler protocol version: 1.2
26 * http://www.audioscrobbler.net/development/protocol/
27 *
28 * TODO: "Now Playing" feature (not mandatory)
29 * Update to new API? http://www.lastfm.fr/api
30 */
31 /*****************************************************************************
32 * Preamble
33 *****************************************************************************/
34
35 #ifdef HAVE_CONFIG_H
36 # include "config.h"
37 #endif
38
39 #include <time.h>
40
41 #include <vlc_common.h>
42 #include <vlc_plugin.h>
43 #include <vlc_interface.h>
44 #include <vlc_dialog.h>
45 #include <vlc_meta.h>
46 #include <vlc_md5.h>
47 #include <vlc_stream.h>
48 #include <vlc_url.h>
49 #include <vlc_network.h>
50 #include <vlc_playlist.h>
51
52 /*****************************************************************************
53 * Local prototypes
54 *****************************************************************************/
55
56 #define QUEUE_MAX 50
57
58 /* Keeps track of metadata to be submitted */
59 typedef struct audioscrobbler_song_t
60 {
61 char *psz_a; /**< track artist */
62 char *psz_t; /**< track title */
63 char *psz_b; /**< track album */
64 char *psz_n; /**< track number */
65 int i_l; /**< track length */
66 char *psz_m; /**< musicbrainz id */
67 time_t date; /**< date since epoch */
68 mtime_t i_start; /**< playing start */
69 } audioscrobbler_song_t;
70
71 struct intf_sys_t
72 {
73 audioscrobbler_song_t p_queue[QUEUE_MAX]; /**< songs not submitted yet*/
74 int i_songs; /**< number of songs */
75
76 vlc_mutex_t lock; /**< p_sys mutex */
77 vlc_cond_t wait; /**< song to submit event */
78 vlc_thread_t thread; /**< thread to submit song */
79
80 /* submission of played songs */
81 vlc_url_t p_submit_url; /**< where to submit data */
82
83 /* submission of playing song */
84 #if 0 //NOT USED
85 char *psz_nowp_host; /**< where to submit data */
86 int i_nowp_port; /**< port to which submit */
87 char *psz_nowp_file; /**< file to which submit */
88 #endif
89 char psz_auth_token[33]; /**< Authentication token */
90
91 /* data about song currently playing */
92 audioscrobbler_song_t p_current_song; /**< song being played */
93
94 mtime_t time_pause; /**< time when vlc paused */
95 mtime_t time_total_pauses; /**< total time in pause */
96
97 bool b_submit; /**< do we have to submit ? */
98
99 bool b_state_cb; /**< if we registered the
100 * "state" callback */
101
102 bool b_meta_read; /**< if we read the song's
103 * metadata already */
104 };
105
106 static int Open (vlc_object_t *);
107 static void Close (vlc_object_t *);
108 static void *Run (void *);
109
110 /*****************************************************************************
111 * Module descriptor
112 ****************************************************************************/
113
114 #define USERNAME_TEXT N_("Username")
115 #define USERNAME_LONGTEXT N_("The username of your last.fm account")
116 #define PASSWORD_TEXT N_("Password")
117 #define PASSWORD_LONGTEXT N_("The password of your last.fm account")
118 #define URL_TEXT N_("Scrobbler URL")
119 #define URL_LONGTEXT N_("The URL set for an alternative scrobbler engine")
120
121 /* This error value is used when last.fm plugin has to be unloaded. */
122 #define VLC_AUDIOSCROBBLER_EFATAL -69
123
124 /* last.fm client identifier */
125 #define CLIENT_NAME PACKAGE
126 #define CLIENT_VERSION VERSION
127
128 vlc_module_begin ()
129 set_category(CAT_INTERFACE)
130 set_subcategory(SUBCAT_INTERFACE_CONTROL)
131 set_shortname(N_("Audioscrobbler"))
132 set_description(N_("Submission of played songs to last.fm"))
133 add_string("lastfm-username", "",
134 USERNAME_TEXT, USERNAME_LONGTEXT, false)
135 add_password("lastfm-password", "",
136 PASSWORD_TEXT, PASSWORD_LONGTEXT, false)
137 add_string("scrobbler-url", "post.audioscrobbler.com",
138 URL_TEXT, URL_LONGTEXT, false)
139 set_capability("interface", 0)
140 set_callbacks(Open, Close)
141 vlc_module_end ()
142
143 /*****************************************************************************
144 * DeleteSong : Delete the char pointers in a song
145 *****************************************************************************/
146 static void DeleteSong(audioscrobbler_song_t* p_song)
147 {
148 FREENULL(p_song->psz_a);
149 FREENULL(p_song->psz_b);
150 FREENULL(p_song->psz_t);
151 FREENULL(p_song->psz_m);
152 FREENULL(p_song->psz_n);
153 }
154
155 /*****************************************************************************
156 * ReadMetaData : Read meta data when parsed by vlc
157 *****************************************************************************/
158 static void ReadMetaData(intf_thread_t *p_this)
159 {
160 input_thread_t *p_input;
161 input_item_t *p_item;
162
163 intf_sys_t *p_sys = p_this->p_sys;
164
165 p_input = playlist_CurrentInput(pl_Get(p_this));
166 if (!p_input)
167 return;
168
169 p_item = input_GetItem(p_input);
170 if (!p_item)
171 {
172 vlc_object_release(p_input);
173 return;
174 }
175
176 #define ALLOC_ITEM_META(a, b) do { \
177 char *psz_meta = input_item_Get##b(p_item); \
178 if (psz_meta && *psz_meta) \
179 a = encode_URI_component(psz_meta); \
180 free(psz_meta); \
181 } while (0)
182
183 vlc_mutex_lock(&p_sys->lock);
184
185 p_sys->b_meta_read = true;
186
187 ALLOC_ITEM_META(p_sys->p_current_song.psz_a, Artist);
188 if (!p_sys->p_current_song.psz_a)
189 {
190 msg_Dbg(p_this, "No artist..");
191 DeleteSong(&p_sys->p_current_song);
192 goto end;
193 }
194
195 ALLOC_ITEM_META(p_sys->p_current_song.psz_t, Title);
196 if (!p_sys->p_current_song.psz_t)
197 {
198 msg_Dbg(p_this, "No track name..");
199 DeleteSong(&p_sys->p_current_song);
200 goto end;
201 }
202
203 /* Now we have read the mandatory meta data, so we can submit that info */
204 p_sys->b_submit = true;
205
206 ALLOC_ITEM_META(p_sys->p_current_song.psz_b, Album);
207 if (!p_sys->p_current_song.psz_b)
208 p_sys->p_current_song.psz_b = calloc(1, 1);
209
210 ALLOC_ITEM_META(p_sys->p_current_song.psz_m, TrackID);
211 if (!p_sys->p_current_song.psz_m)
212 p_sys->p_current_song.psz_m = calloc(1, 1);
213
214 p_sys->p_current_song.i_l = input_item_GetDuration(p_item) / 1000000;
215
216 ALLOC_ITEM_META(p_sys->p_current_song.psz_n, TrackNum);
217 if (!p_sys->p_current_song.psz_n)
218 p_sys->p_current_song.psz_n = calloc(1, 1);
219 #undef ALLOC_ITEM_META
220
221 msg_Dbg(p_this, "Meta data registered");
222
223 end:
224 vlc_mutex_unlock(&p_sys->lock);
225 vlc_object_release(p_input);
226 }
227
228 /*****************************************************************************
229 * AddToQueue: Add the played song to the queue to be submitted
230 *****************************************************************************/
231 static void AddToQueue (intf_thread_t *p_this)
232 {
233 mtime_t played_time;
234 intf_sys_t *p_sys = p_this->p_sys;
235
236 vlc_mutex_lock(&p_sys->lock);
237 if (!p_sys->b_submit)
238 goto end;
239
240 /* wait for the user to listen enough before submitting */
241 played_time = mdate() - p_sys->p_current_song.i_start -
242 p_sys->time_total_pauses;
243 played_time /= 1000000; /* µs → s */
244
245 /*HACK: it seam that the preparsing sometime fail,
246 so use the playing time as the song length */
247 if (p_sys->p_current_song.i_l == 0)
248 p_sys->p_current_song.i_l = played_time;
249
250 /* Don't send song shorter than 30s */
251 if (p_sys->p_current_song.i_l < 30)
252 {
253 msg_Dbg(p_this, "Song too short (< 30s), not submitting");
254 goto end;
255 }
256
257 /* Send if the user had listen more than 240s OR half the track length */
258 if ((played_time < 240) &&
259 (played_time < (p_sys->p_current_song.i_l / 2)))
260 {
261 msg_Dbg(p_this, "Song not listened long enough, not submitting");
262 goto end;
263 }
264
265 /* Check that all meta are present */
266 if (!p_sys->p_current_song.psz_a || !*p_sys->p_current_song.psz_a ||
267 !p_sys->p_current_song.psz_t || !*p_sys->p_current_song.psz_t)
268 {
269 msg_Dbg(p_this, "Missing artist or title, not submitting");
270 goto end;
271 }
272
273 if (p_sys->i_songs >= QUEUE_MAX)
274 {
275 msg_Warn(p_this, "Submission queue is full, not submitting");
276 goto end;
277 }
278
279 msg_Dbg(p_this, "Song will be submitted.");
280
281 #define QUEUE_COPY(a) \
282 p_sys->p_queue[p_sys->i_songs].a = p_sys->p_current_song.a
283
284 #define QUEUE_COPY_NULL(a) \
285 QUEUE_COPY(a); \
286 p_sys->p_current_song.a = NULL
287
288 QUEUE_COPY(i_l);
289 QUEUE_COPY_NULL(psz_n);
290 QUEUE_COPY_NULL(psz_a);
291 QUEUE_COPY_NULL(psz_t);
292 QUEUE_COPY_NULL(psz_b);
293 QUEUE_COPY_NULL(psz_m);
294 QUEUE_COPY(date);
295 #undef QUEUE_COPY_NULL
296 #undef QUEUE_COPY
297
298 p_sys->i_songs++;
299
300 /* signal the main loop we have something to submit */
301 vlc_cond_signal(&p_sys->wait);
302
303 end:
304 DeleteSong(&p_sys->p_current_song);
305 p_sys->b_submit = false;
306 vlc_mutex_unlock(&p_sys->lock);
307 }
308
309 /*****************************************************************************
310 * PlayingChange: Playing status change callback
311 *****************************************************************************/
312 static int PlayingChange(vlc_object_t *p_this, const char *psz_var,
313 vlc_value_t oldval, vlc_value_t newval, void *p_data)
314 {
315 VLC_UNUSED(oldval);
316
317 intf_thread_t *p_intf = (intf_thread_t*) p_data;
318 intf_sys_t *p_sys = p_intf->p_sys;
319 input_thread_t *p_input = (input_thread_t*)p_this;
320 int state;
321
322 VLC_UNUSED(psz_var);
323
324 if (newval.i_int != INPUT_EVENT_STATE) return VLC_SUCCESS;
325
326 if (var_CountChoices(p_input, "video-es"))
327 {
328 msg_Dbg(p_this, "Not an audio-only input, not submitting");
329 return VLC_SUCCESS;
330 }
331
332 state = var_GetInteger(p_input, "state");
333
334 if (!p_sys->b_meta_read && state >= PLAYING_S)
335 {
336 ReadMetaData(p_intf);
337 return VLC_SUCCESS;
338 }
339
340
341 if (state >= END_S)
342 AddToQueue(p_intf);
343 else if (state == PAUSE_S)
344 p_sys->time_pause = mdate();
345 else if (p_sys->time_pause > 0 && state == PLAYING_S)
346 {
347 p_sys->time_total_pauses += (mdate() - p_sys->time_pause);
348 p_sys->time_pause = 0;
349 }
350
351 return VLC_SUCCESS;
352 }
353
354 /*****************************************************************************
355 * ItemChange: Playlist item change callback
356 *****************************************************************************/
357 static int ItemChange(vlc_object_t *p_this, const char *psz_var,
358 vlc_value_t oldval, vlc_value_t newval, void *p_data)
359 {
360 input_thread_t *p_input;
361 intf_thread_t *p_intf = (intf_thread_t*) p_data;
362 intf_sys_t *p_sys = p_intf->p_sys;
363 input_item_t *p_item;
364
365 VLC_UNUSED(p_this); VLC_UNUSED(psz_var);
366 VLC_UNUSED(oldval); VLC_UNUSED(newval);
367
368 p_sys->b_state_cb = false;
369 p_sys->b_meta_read = false;
370 p_sys->b_submit = false;
371
372 p_input = playlist_CurrentInput(pl_Get(p_intf));
373
374 if (!p_input || p_input->b_dead)
375 return VLC_SUCCESS;
376
377 p_item = input_GetItem(p_input);
378 if (!p_item)
379 {
380 vlc_object_release(p_input);
381 return VLC_SUCCESS;
382 }
383
384 if (var_CountChoices(p_input, "video-es"))
385 {
386 msg_Dbg(p_this, "Not an audio-only input, not submitting");
387 vlc_object_release(p_input);
388 return VLC_SUCCESS;
389 }
390
391 p_sys->time_total_pauses = 0;
392 time(&p_sys->p_current_song.date); /* to be sent to last.fm */
393 p_sys->p_current_song.i_start = mdate(); /* only used locally */
394
395 var_AddCallback(p_input, "intf-event", PlayingChange, p_intf);
396 p_sys->b_state_cb = true;
397
398 if (input_item_IsPreparsed(p_item))
399 ReadMetaData(p_intf);
400 /* if the input item was not preparsed, we'll do it in PlayingChange()
401 * callback, when "state" == PLAYING_S */
402
403 vlc_object_release(p_input);
404 return VLC_SUCCESS;
405 }
406
407 /*****************************************************************************
408 * Open: initialize and create stuff
409 *****************************************************************************/
410 static int Open(vlc_object_t *p_this)
411 {
412 intf_thread_t *p_intf = (intf_thread_t*) p_this;
413 intf_sys_t *p_sys = calloc(1, sizeof(intf_sys_t));
414
415 if (!p_sys)
416 return VLC_ENOMEM;
417
418 p_intf->p_sys = p_sys;
419
420 vlc_mutex_init(&p_sys->lock);
421 vlc_cond_init(&p_sys->wait);
422
423 if (vlc_clone(&p_sys->thread, Run, p_intf, VLC_THREAD_PRIORITY_LOW))
424 {
425 vlc_cond_destroy(&p_sys->wait);
426 vlc_mutex_destroy(&p_sys->lock);
427 free(p_sys);
428 return VLC_ENOMEM;
429 }
430
431 var_AddCallback(pl_Get(p_intf), "activity", ItemChange, p_intf);
432
433 return VLC_SUCCESS;
434 }
435
436 /*****************************************************************************
437 * Close: destroy interface stuff
438 *****************************************************************************/
439 static void Close(vlc_object_t *p_this)
440 {
441 playlist_t *p_playlist = pl_Get(p_this);
442 input_thread_t *p_input;
443 intf_thread_t *p_intf = (intf_thread_t*) p_this;
444 intf_sys_t *p_sys = p_intf->p_sys;
445
446 var_DelCallback(p_playlist, "activity", ItemChange, p_intf);
447
448 vlc_cancel(p_sys->thread);
449 vlc_join(p_sys->thread, NULL);
450
451 p_input = playlist_CurrentInput(p_playlist);
452 if (p_input)
453 {
454 if (p_sys->b_state_cb)
455 var_DelCallback(p_input, "intf-event", PlayingChange, p_intf);
456 vlc_object_release(p_input);
457 }
458
459 int i;
460 for (i = 0; i < p_sys->i_songs; i++)
461 DeleteSong(&p_sys->p_queue[i]);
462 vlc_UrlClean(&p_sys->p_submit_url);
463 #if 0 //NOT USED
464 free(p_sys->psz_nowp_host);
465 free(p_sys->psz_nowp_file);
466 #endif
467 vlc_cond_destroy(&p_sys->wait);
468 vlc_mutex_destroy(&p_sys->lock);
469 free(p_sys);
470 }
471
472 /*****************************************************************************
473 * Handshake : Init audioscrobbler connection
474 *****************************************************************************/
475 static int Handshake(intf_thread_t *p_this)
476 {
477 char *psz_username, *psz_password;
478 char *psz_scrobbler_url;
479 time_t timestamp;
480 char psz_timestamp[21];
481
482 struct md5_s p_struct_md5;
483
484 stream_t *p_stream;
485 char *psz_handshake_url;
486 uint8_t p_buffer[1024];
487 char *p_buffer_pos;
488
489 int i_ret;
490 char *psz_url;
491
492 intf_thread_t *p_intf = (intf_thread_t*) p_this;
493 intf_sys_t *p_sys = p_this->p_sys;
494
495 psz_username = var_InheritString(p_this, "lastfm-username");
496 if (!psz_username)
497 return VLC_ENOMEM;
498
499 psz_password = var_InheritString(p_this, "lastfm-password");
500 if (!psz_password)
501 {
502 free(psz_username);
503 return VLC_ENOMEM;
504 }
505
506 /* username or password have not been setup */
507 if (!*psz_username || !*psz_password)
508 {
509 free(psz_username);
510 free(psz_password);
511 return VLC_ENOVAR;
512 }
513
514 time(&timestamp);
515
516 /* generates a md5 hash of the password */
517 InitMD5(&p_struct_md5);
518 AddMD5(&p_struct_md5, (uint8_t*) psz_password, strlen(psz_password));
519 EndMD5(&p_struct_md5);
520
521 free(psz_password);
522
523 char *psz_password_md5 = psz_md5_hash(&p_struct_md5);
524 if (!psz_password_md5)
525 {
526 free(psz_username);
527 return VLC_ENOMEM;
528 }
529
530 snprintf(psz_timestamp, sizeof(psz_timestamp), "%"PRIu64,
531 (uint64_t)timestamp);
532
533 /* generates a md5 hash of :
534 * - md5 hash of the password, plus
535 * - timestamp in clear text
536 */
537 InitMD5(&p_struct_md5);
538 AddMD5(&p_struct_md5, (uint8_t*) psz_password_md5, 32);
539 AddMD5(&p_struct_md5, (uint8_t*) psz_timestamp, strlen(psz_timestamp));
540 EndMD5(&p_struct_md5);
541 free(psz_password_md5);
542
543 char *psz_auth_token = psz_md5_hash(&p_struct_md5);
544 if (!psz_auth_token)
545 {
546 free(psz_username);
547 return VLC_ENOMEM;
548 }
549
550 psz_scrobbler_url = var_InheritString(p_this, "scrobbler-url");
551 if (!psz_scrobbler_url)
552 {
553 free(psz_username);
554 return VLC_ENOMEM;
555 }
556
557 i_ret = asprintf(&psz_handshake_url,
558 "http://%s/?hs=true&p=1.2&c="CLIENT_NAME"&v="CLIENT_VERSION"&u=%s&t=%s&a=%s"
559 , psz_scrobbler_url, psz_username, psz_timestamp, psz_auth_token);
560
561 free(psz_scrobbler_url);
562 free(psz_username);
563 if (i_ret == -1)
564 return VLC_ENOMEM;
565
566 /* send the http handshake request */
567 p_stream = stream_UrlNew(p_intf, psz_handshake_url);
568 free(psz_handshake_url);
569
570 if (!p_stream)
571 return VLC_EGENERIC;
572
573 /* read answer */
574 i_ret = stream_Read(p_stream, p_buffer, sizeof(p_buffer) - 1);
575 if (i_ret == 0)
576 {
577 stream_Delete(p_stream);
578 return VLC_EGENERIC;
579 }
580 p_buffer[i_ret] = '\0';
581 stream_Delete(p_stream);
582
583 p_buffer_pos = strstr((char*) p_buffer, "FAILED ");
584 if (p_buffer_pos)
585 {
586 /* handshake request failed, sorry */
587 msg_Err(p_this, "last.fm handshake failed: %s", p_buffer_pos + 7);
588 return VLC_EGENERIC;
589 }
590
591 if (strstr((char*) p_buffer, "BADAUTH"))
592 {
593 /* authentication failed, bad username/password combination */
594 dialog_Fatal(p_this,
595 _("last.fm: Authentication failed"),
596 "%s", _("last.fm username or password is incorrect. "
597 "Please verify your settings and relaunch VLC."));
598 return VLC_AUDIOSCROBBLER_EFATAL;
599 }
600
601 if (strstr((char*) p_buffer, "BANNED"))
602 {
603 /* oops, our version of vlc has been banned by last.fm servers */
604 msg_Err(p_intf, "This version of VLC has been banned by last.fm. "
605 "You should upgrade VLC, or disable the last.fm plugin.");
606 return VLC_AUDIOSCROBBLER_EFATAL;
607 }
608
609 if (strstr((char*) p_buffer, "BADTIME"))
610 {
611 /* The system clock isn't good */
612 msg_Err(p_intf, "last.fm handshake failed because your clock is too "
613 "much shifted. Please correct it, and relaunch VLC.");
614 return VLC_AUDIOSCROBBLER_EFATAL;
615 }
616
617 p_buffer_pos = strstr((char*) p_buffer, "OK");
618 if (!p_buffer_pos)
619 goto proto;
620
621 p_buffer_pos = strstr(p_buffer_pos, "\n");
622 if (!p_buffer_pos || strlen(p_buffer_pos) < 33)
623 goto proto;
624 p_buffer_pos++; /* we skip the '\n' */
625
626 /* save the session ID */
627 memcpy(p_sys->psz_auth_token, p_buffer_pos, 32);
628 p_sys->psz_auth_token[32] = '\0';
629
630 p_buffer_pos = strstr(p_buffer_pos, "http://");
631 if (!p_buffer_pos || strlen(p_buffer_pos) == 7)
632 goto proto;
633
634 /* We need to read the nowplaying url */
635 p_buffer_pos += 7; /* we skip "http://" */
636 #if 0 //NOT USED
637 psz_url = strndup(p_buffer_pos, strcspn(p_buffer_pos, "\n"));
638 if (!psz_url)
639 goto oom;
640
641 switch(ParseURL(psz_url, &p_sys->psz_nowp_host,
642 &p_sys->psz_nowp_file, &p_sys->i_nowp_port))
643 {
644 case VLC_ENOMEM:
645 goto oom;
646 case VLC_EGENERIC:
647 goto proto;
648 case VLC_SUCCESS:
649 default:
650 break;
651 }
652 #endif
653 p_buffer_pos = strstr(p_buffer_pos, "http://");
654 if (!p_buffer_pos || strlen(p_buffer_pos) == 7)
655 goto proto;
656
657 /* We need to read the submission url */
658 p_buffer_pos += 7; /* we skip "http://" */
659 psz_url = strndup(p_buffer_pos, strcspn(p_buffer_pos, "\n"));
660 if (!psz_url)
661 goto oom;
662
663 /* parse the submission url */
664 vlc_UrlParse(&p_sys->p_submit_url, psz_url, 0);
665 free(psz_url);
666
667 return VLC_SUCCESS;
668
669 oom:
670 return VLC_ENOMEM;
671
672 proto:
673 msg_Err(p_intf, "Handshake: can't recognize server protocol");
674 return VLC_EGENERIC;
675 }
676
677 static void HandleInterval(mtime_t *next, unsigned int *i_interval)
678 {
679 if (*i_interval == 0)
680 {
681 /* first interval is 1 minute */
682 *i_interval = 1;
683 }
684 else
685 {
686 /* else we double the previous interval, up to 120 minutes */
687 *i_interval <<= 1;
688 if (*i_interval > 120)
689 *i_interval = 120;
690 }
691 *next = mdate() + (*i_interval * 1000000 * 60);
692 }
693
694 /*****************************************************************************
695 * Run : call Handshake() then submit songs
696 *****************************************************************************/
697 static void *Run(void *data)
698 {
699 intf_thread_t *p_intf = data;
700 uint8_t p_buffer[1024];
701 int canc = vlc_savecancel();
702 bool b_handshaked = false;
703
704 /* data about audioscrobbler session */
705 mtime_t next_exchange = -1; /**< when can we send data */
706 unsigned int i_interval; /**< waiting interval (secs)*/
707
708 intf_sys_t *p_sys = p_intf->p_sys;
709
710 /* main loop */
711 for (;;)
712 {
713 vlc_restorecancel(canc);
714 vlc_mutex_lock(&p_sys->lock);
715 mutex_cleanup_push(&p_sys->lock);
716
717 do
718 vlc_cond_wait(&p_sys->wait, &p_sys->lock);
719 while (mdate() < next_exchange);
720
721 vlc_cleanup_run();
722 canc = vlc_savecancel();
723
724 /* handshake if needed */
725 if (!b_handshaked)
726 {
727 msg_Dbg(p_intf, "Handshaking with last.fm ...");
728
729 switch(Handshake(p_intf))
730 {
731 case VLC_ENOMEM:
732 goto out;
733
734 case VLC_ENOVAR:
735 /* username not set */
736 dialog_Fatal(p_intf,
737 _("Last.fm username not set"),
738 "%s", _("Please set a username or disable the "
739 "audioscrobbler plugin, and restart VLC.\n"
740 "Visit http://www.last.fm/join/ to get an account."));
741 goto out;
742
743 case VLC_SUCCESS:
744 msg_Dbg(p_intf, "Handshake successful :)");
745 b_handshaked = true;
746 i_interval = 0;
747 next_exchange = mdate();
748 break;
749
750 case VLC_AUDIOSCROBBLER_EFATAL:
751 msg_Warn(p_intf, "Exiting...");
752 goto out;
753
754 case VLC_EGENERIC:
755 default:
756 /* protocol error : we'll try later */
757 HandleInterval(&next_exchange, &i_interval);
758 break;
759 }
760 /* if handshake failed let's restart the loop */
761 if (!b_handshaked)
762 continue;
763 }
764
765 msg_Dbg(p_intf, "Going to submit some data...");
766 char *psz_submit;
767 if (asprintf(&psz_submit, "s=%s", p_sys->psz_auth_token) == -1)
768 break;
769
770 /* forge the HTTP POST request */
771 vlc_mutex_lock(&p_sys->lock);
772 audioscrobbler_song_t *p_song;
773 for (int i_song = 0 ; i_song < p_sys->i_songs ; i_song++)
774 {
775 char *psz_submit_song, *psz_submit_tmp;
776 p_song = &p_sys->p_queue[i_song];
777 if (asprintf(&psz_submit_song,
778 "&a%%5B%d%%5D=%s"
779 "&t%%5B%d%%5D=%s"
780 "&i%%5B%d%%5D=%u"
781 "&o%%5B%d%%5D=P"
782 "&r%%5B%d%%5D="
783 "&l%%5B%d%%5D=%d"
784 "&b%%5B%d%%5D=%s"
785 "&n%%5B%d%%5D=%s"
786 "&m%%5B%d%%5D=%s",
787 i_song, p_song->psz_a,
788 i_song, p_song->psz_t,
789 i_song, (unsigned)p_song->date, /* HACK: %ju (uintmax_t) unsupported on Windows */
790 i_song,
791 i_song,
792 i_song, p_song->i_l,
793 i_song, p_song->psz_b,
794 i_song, p_song->psz_n,
795 i_song, p_song->psz_m
796 ) == -1)
797 { /* Out of memory */
798 vlc_mutex_unlock(&p_sys->lock);
799 goto out;
800 }
801 psz_submit_tmp = psz_submit;
802 if (asprintf(&psz_submit, "%s%s",
803 psz_submit_tmp, psz_submit_song) == -1)
804 { /* Out of memory */
805 free(psz_submit_tmp);
806 free(psz_submit_song);
807 vlc_mutex_unlock(&p_sys->lock);
808 goto out;
809 }
810 free(psz_submit_song);
811 free(psz_submit_tmp);
812 }
813 vlc_mutex_unlock(&p_sys->lock);
814
815 int i_post_socket = net_ConnectTCP(p_intf, p_sys->p_submit_url.psz_host,
816 p_sys->p_submit_url.i_port);
817
818 if (i_post_socket == -1)
819 {
820 /* If connection fails, we assume we must handshake again */
821 HandleInterval(&next_exchange, &i_interval);
822 b_handshaked = false;
823 free(psz_submit);
824 continue;
825 }
826
827 /* we transmit the data */
828 int i_net_ret = net_Printf(p_intf, i_post_socket, NULL,
829 "POST %s HTTP/1.1\n"
830 "Accept-Encoding: identity\n"
831 "Content-length: %zu\n"
832 "Connection: close\n"
833 "Content-type: application/x-www-form-urlencoded\n"
834 "Host: %s\n"
835 "User-agent: VLC media player/"VERSION"\r\n"
836 "\r\n"
837 "%s\r\n"
838 "\r\n",
839 p_sys->p_submit_url.psz_path, strlen(psz_submit),
840 p_sys->p_submit_url.psz_host, psz_submit
841 );
842
843 free(psz_submit);
844 if (i_net_ret == -1)
845 {
846 /* If connection fails, we assume we must handshake again */
847 HandleInterval(&next_exchange, &i_interval);
848 b_handshaked = false;
849 continue;
850 }
851
852 i_net_ret = net_Read(p_intf, i_post_socket, NULL,
853 p_buffer, sizeof(p_buffer) - 1, false);
854 if (i_net_ret <= 0)
855 {
856 /* if we get no answer, something went wrong : try again */
857 continue;
858 }
859
860 net_Close(i_post_socket);
861 p_buffer[i_net_ret] = '\0';
862
863 char *failed = strstr((char *) p_buffer, "FAILED");
864 if (failed)
865 {
866 msg_Warn(p_intf, "%s", failed);
867 HandleInterval(&next_exchange, &i_interval);
868 continue;
869 }
870
871 if (strstr((char *) p_buffer, "BADSESSION"))
872 {
873 msg_Err(p_intf, "Authentication failed (BADSESSION), are you connected to last.fm with another program ?");
874 b_handshaked = false;
875 HandleInterval(&next_exchange, &i_interval);
876 continue;
877 }
878
879 if (strstr((char *) p_buffer, "OK"))
880 {
881 for (int i = 0; i < p_sys->i_songs; i++)
882 DeleteSong(&p_sys->p_queue[i]);
883 p_sys->i_songs = 0;
884 i_interval = 0;
885 next_exchange = mdate();
886 msg_Dbg(p_intf, "Submission successful!");
887 }
888 else
889 {
890 msg_Err(p_intf, "Authentication failed, handshaking again (%s)",
891 p_buffer);
892 b_handshaked = false;
893 HandleInterval(&next_exchange, &i_interval);
894 }
895 }
896 out:
897 vlc_restorecancel(canc);
898 return NULL;
899 }
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