Commit | Line | Data |
---|---|---|
9faa7a88 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2004-2008 Richard Kettlewell | |
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, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | /** @file server/macros-disorder.c | |
21 | * @brief DisOrder-specific expansions | |
22 | */ | |
23 | ||
24 | #include <config.h> | |
25 | #include "types.h" | |
26 | ||
27 | #include "sink.h" | |
28 | #include "client.h" | |
29 | #include "cgi.h" | |
30 | #include "macros-disorder.h" | |
448d3570 | 31 | #include "lookups.h" |
9faa7a88 | 32 | |
bca4e2b7 RK |
33 | /** @brief For error template */ |
34 | char *error_string; | |
35 | ||
9faa7a88 RK |
36 | /** @brief Locate a track by ID */ |
37 | static struct queue_entry *findtrack(const char *id) { | |
38 | struct queue_entry *q; | |
39 | ||
40 | lookups(DC_PLAYING); | |
41 | if(playing && !strcmp(playing->id, id)) | |
42 | return playing; | |
43 | lookups(DC_QUEUE); | |
44 | for(q = queue; q; q = q->next) | |
45 | if(!strcmp(q->id, id)) | |
46 | return q; | |
47 | lookups(DC_RECENT); | |
48 | for(q = recent; q; q = q->next) | |
49 | if(!strcmp(q->id, id)) | |
50 | return q; | |
51 | } | |
52 | ||
53 | /** @brief Return @p i as a string */ | |
54 | static const char *make_index(int i) { | |
55 | char *s; | |
56 | ||
57 | byte_xasprintf(&s, "%d", i); | |
58 | return s; | |
59 | } | |
60 | ||
bca4e2b7 | 61 | /* @server-version |
9faa7a88 RK |
62 | * |
63 | * Expands to the server's version string, or a (safe to use) error | |
64 | * value if the server is unavailable or broken. | |
65 | */ | |
66 | static int exp_server_version(int attribute((unused)) nargs, | |
67 | char attribute((unused)) **args, | |
68 | struct sink *output, | |
69 | void attribute((unused)) *u) { | |
70 | const char *v; | |
71 | ||
72 | if(client) { | |
73 | if(disorder_version(client, (char **)&v)) | |
74 | v = "(cannot get version)"; | |
75 | } else | |
76 | v = "(server not running)"; | |
77 | return sink_write(output, cgi_sgmlquote(v)) < 0 ? -1 : 0; | |
78 | } | |
79 | ||
bca4e2b7 | 80 | /* @version |
9faa7a88 RK |
81 | * |
82 | * Expands to the local version string. | |
83 | */ | |
84 | static int exp_version(int attribute((unused)) nargs, | |
85 | char attribute((unused)) **args, | |
86 | struct sink *output, | |
87 | void attribute((unused)) *u) { | |
88 | return sink_write(output, | |
89 | cgi_sgmlquote(disorder_short_version_string)) < 0 ? -1 : 0; | |
90 | } | |
91 | ||
bca4e2b7 | 92 | /* @url |
9faa7a88 RK |
93 | * |
94 | * Expands to the base URL of the web interface. | |
95 | */ | |
96 | static int exp_url(int attribute((unused)) nargs, | |
97 | char attribute((unused)) **args, | |
98 | struct sink *output, | |
99 | void attribute((unused)) *u) { | |
100 | return sink_write(output, | |
101 | cgi_sgmlquote(config->url)) < 0 ? -1 : 0; | |
102 | } | |
103 | ||
bca4e2b7 | 104 | /* @arg{NAME} |
9faa7a88 RK |
105 | * |
106 | * Expands to the CGI argument NAME, or the empty string if there is | |
107 | * no such argument. | |
108 | */ | |
109 | static int exp_arg(int attribute((unused)) nargs, | |
110 | char **args, | |
111 | struct sink *output, | |
112 | void attribute((unused)) *u) { | |
113 | const char *s = cgi_get(args[0]); | |
114 | if(s) | |
115 | return sink_write(output, | |
116 | cgi_sgmlquote(s)) < 0 ? -1 : 0; | |
117 | else | |
118 | return 0; | |
119 | } | |
120 | ||
bca4e2b7 | 121 | /* @user |
9faa7a88 RK |
122 | * |
123 | * Expands to the logged-in username (which might be "guest"), or to | |
124 | * the empty string if not connected. | |
125 | */ | |
126 | static int exp_user(int attribute((unused)) nargs, | |
127 | char attribute((unused)) **args, | |
128 | struct sink *output, | |
129 | void attribute((unused)) *u) { | |
130 | const char *u; | |
131 | ||
132 | if(client && (u = disorder_user(client))) | |
133 | return sink_write(output, cgi_sgmlquote(u)) < 0 ? -1 : 0; | |
134 | return 0; | |
135 | } | |
136 | ||
137 | /* @part{TRACK|ID}{PART}{CONTEXT} | |
138 | * | |
139 | * Expands to a track name part. | |
140 | * | |
141 | * A track may be identified by name or by queue ID. | |
142 | * | |
143 | * CONTEXT may be omitted. If it is then 'display' is assumed. | |
144 | * | |
145 | * If the CONTEXT is 'short' then the 'display' part is looked up, and the | |
146 | * result truncated according to the length defined by the short_display | |
147 | * configuration directive. | |
148 | */ | |
149 | static int exp_part(int nargs, | |
150 | char **args, | |
151 | struct sink *output, | |
152 | void attribute((unused)) *u) { | |
153 | const char *track = args[0], *part = args[1]; | |
154 | const char *context = nargs > 2 ? args[2] : "display"; | |
155 | char *s; | |
156 | ||
157 | if(track[0] != '/') { | |
158 | struct queue_entry *q = findtrack(track); | |
159 | ||
160 | if(q) | |
161 | track = q->track; | |
162 | else | |
163 | return 0; | |
164 | } | |
165 | if(client | |
166 | && !disorder_get(client, &s, track, | |
167 | !strcmp(context, "short") ? "display" : context, | |
168 | part)) | |
169 | return sink_write(output, cgi_sgmlquote(s)) < 0 ? -1 : 0; | |
170 | return 0; | |
171 | } | |
172 | ||
173 | /* @quote{STRING} | |
174 | * | |
175 | * SGML-quotes STRING. Note that most expansion results are already suitable | |
176 | * quoted, so this expansion is usually not required. | |
177 | */ | |
178 | static int exp_quote(int attribute((unused)) nargs, | |
179 | char **args, | |
180 | struct sink *output, | |
181 | void attribute((unused)) *u) { | |
182 | return sink_write(output, cgi_sgmlquote(args[0])) < 0 ? -1 : 0; | |
183 | } | |
184 | ||
185 | /* @who{ID} | |
186 | * | |
187 | * Expands to the name of the submitter of track ID, which must be a playing | |
188 | * track, in the queue, or in the recent list. | |
189 | */ | |
190 | static int exp_who(int attribute((unused)) nargs, | |
191 | char **args, | |
192 | struct sink *output, | |
193 | void attribute((unused)) *u) { | |
194 | struct queue_entry *q = findtrack(args[0]); | |
195 | ||
196 | if(q && q->submitter) | |
197 | return sink_write(output, cgi_sgmlquote(q->submitter)) < 0 ? -1 : 0; | |
198 | return 0; | |
199 | } | |
200 | ||
201 | /* @when{ID} | |
202 | * | |
203 | * Expands to the time a track started or is expected to start. The track must | |
204 | * be a playing track, in the queue, or in the recent list. | |
205 | */ | |
206 | static int exp_when(int attribute((unused)) nargs, | |
207 | char **args, | |
208 | struct sink *output, | |
209 | void attribute((unused)) *u) { | |
210 | struct queue_entry *q = findtrack(args[0]); | |
211 | const struct tm *w = 0; | |
212 | ||
213 | if(q) { | |
214 | switch(q->state) { | |
215 | case playing_isscratch: | |
216 | case playing_unplayed: | |
217 | case playing_random: | |
218 | if(q->expected) | |
219 | w = localtime(&q->expected); | |
220 | break; | |
221 | case playing_failed: | |
222 | case playing_no_player: | |
223 | case playing_ok: | |
224 | case playing_scratched: | |
225 | case playing_started: | |
226 | case playing_paused: | |
227 | case playing_quitting: | |
228 | if(q->played) | |
229 | w = localtime(&q->played); | |
230 | break; | |
231 | } | |
232 | if(w) | |
233 | return sink_printf(output, "%d:%02d", w->tm_hour, w->tm_min) < 0 ? -1 : 0; | |
234 | } | |
235 | return sink_write(output, " ") < 0 ? -1 : 0; | |
236 | } | |
237 | ||
238 | /* @length{ID|TRACK} | |
239 | * | |
240 | * Expands to the length of a track, identified by its queue ID or its name. | |
241 | * If it is the playing track (identified by ID) then the amount played so far | |
242 | * is included. | |
243 | */ | |
244 | static int exp_length(int attribute((unused)) nargs, | |
245 | char **args, | |
246 | struct sink *output, | |
247 | void attribute((unused)) *u) { | |
248 | struct queue_entry *q; | |
249 | long length = 0; | |
250 | const char *name; | |
251 | ||
252 | if(args[0][0] == '/') | |
253 | /* Track identified by name */ | |
254 | name = args[0]; | |
255 | else { | |
256 | /* Track identified by queue ID */ | |
257 | if(!(q = findtrack(args[0]))) | |
258 | return 0; | |
259 | if(q->state == play_start || q->state == playing_paused) | |
260 | if(sink_printf(output, "%ld:%02ld/", q->sofar / 60, q->sofar % 60) < 0) | |
261 | return -1; | |
262 | name = q->track; | |
263 | } | |
264 | if(client && disorder_length(client, name, &length)) | |
265 | return sink_printf(output, "%ld:%02ld", | |
266 | length / 60, length % 60) < 0 ? -1 : 0; | |
267 | return sink_write(output, " ") < 0 ? -1 : 0; | |
268 | } | |
269 | ||
bca4e2b7 | 270 | /* @removable{ID} |
9faa7a88 RK |
271 | * |
272 | * Expands to "true" if track ID is removable (or scratchable, if it is the | |
273 | * playing track) and "false" otherwise. | |
274 | */ | |
275 | static int exp_removable(int attribute((unused)) nargs, | |
276 | char **args, | |
277 | struct sink *output, | |
278 | void attribute((unused)) *u) { | |
279 | struct queue_entry *q = findtrack(args[0]); | |
280 | /* TODO would be better to reject recent */ | |
281 | ||
282 | if(!q || !client) | |
283 | return mx_bool_result(output, 0); | |
284 | lookup(DC_RIGHTS); | |
285 | return mx_bool_result(output, | |
286 | (q == playing ? right_scratchable : right_removable) | |
287 | (rights, disorder_user(client), q)); | |
288 | } | |
289 | ||
bca4e2b7 | 290 | /* @movable{ID} |
9faa7a88 RK |
291 | * |
292 | * Expands to "true" if track ID is movable and "false" otherwise. | |
293 | */ | |
294 | static int exp_movable(int attribute((unused)) nargs, | |
295 | char **args, | |
296 | struct sink *output, | |
297 | void attribute((unused)) *u) { | |
298 | struct queue_entry *q = findtrack(args[0]); | |
299 | /* TODO would be better to recent playing/recent */ | |
300 | ||
301 | if(!q || !client) | |
302 | return mx_bool_result(output, 0); | |
303 | lookup(DC_RIGHTS); | |
304 | return mx_bool_result(output, | |
305 | right_movable(rights, disorder_user(client), q)); | |
306 | } | |
307 | ||
308 | /* @playing{TEMPLATE} | |
309 | * | |
310 | * Expands to TEMPLATE, with: | |
311 | * - @id@ expanded to the queue ID of the playing track | |
312 | * - @track@ expanded to its UNQUOTED name | |
313 | * | |
314 | * If no track is playing expands to nothing. | |
315 | * | |
316 | * TEMPLATE is optional. If it is left out then instead expands to the queue | |
317 | * ID of the playing track. | |
318 | */ | |
319 | static int exp_playing(int nargs, | |
320 | const struct mx_node **args, | |
321 | struct sink *output, | |
322 | void attribute((unused)) *u) { | |
323 | lookup(DC_PLAYING); | |
324 | if(!playing) | |
325 | return 0; | |
326 | if(!nargs) | |
327 | return sink_write(output, playing->id) < 0 ? -1 : 0; | |
328 | return mx_rewritel(args[0], | |
329 | "id", playing->id, | |
330 | "track", playing->track, | |
331 | (char *)0); | |
332 | } | |
333 | ||
334 | /* @queue{TEMPLATE} | |
335 | * | |
336 | * For each track in the queue, expands TEMPLATE with the following expansions: | |
337 | * - @id@ to the queue ID of the track | |
338 | * - @track@ to the UNQUOTED track name | |
339 | * - @index@ to the track number from 0 | |
340 | * - @parity@ to "even" or "odd" alternately | |
341 | * - @first@ to "true" on the first track and "false" otherwise | |
342 | * - @last@ to "true" on the last track and "false" otherwise | |
343 | */ | |
344 | static int exp_queue(int attribute((unused)) nargs, | |
345 | const struct mx_node **args, | |
346 | struct sink *output, | |
347 | void attribute((unused)) *u) { | |
348 | struct queue_entry *q; | |
349 | int rc, i; | |
350 | ||
351 | lookup(DC_QUEUE); | |
352 | for(q = queue, i = 0; q; q = q->next, ++i) | |
353 | if((rc = mx_rewritel(args[0], | |
354 | "id", q->id, | |
355 | "track", q->track, | |
356 | "index", make_index(i), | |
357 | "parity", i % 2 ? "odd" : "even", | |
358 | "first", q == queue ? "true" : "false", | |
359 | "last", q->next ? "false" : "true", | |
360 | (char *)0))) | |
361 | return rc; | |
362 | return 0; | |
363 | } | |
364 | ||
365 | /* @recent{TEMPLATE} | |
366 | * | |
367 | * For each track in the recently played list, expands TEMPLATE with the | |
368 | * following expansions: | |
369 | * - @id@ to the queue ID of the track | |
370 | * - @track@ to the UNQUOTED track name | |
371 | * - @index@ to the track number from 0 | |
372 | * - @parity@ to "even" or "odd" alternately | |
373 | * - @first@ to "true" on the first track and "false" otherwise | |
374 | * - @last@ to "true" on the last track and "false" otherwise | |
375 | */ | |
376 | static int exp_recent(int attribute((unused)) nargs, | |
377 | const struct mx_node **args, | |
378 | struct sink *output, | |
379 | void attribute((unused)) *u) { | |
380 | struct queue_entry *q; | |
381 | int rc, i; | |
382 | ||
383 | lookup(DC_RECENT); | |
384 | for(q = recent, i = 0; q; q = q->next, ++i) | |
385 | if((rc = mx_rewritel(args[0], | |
386 | "id", q->id, | |
387 | "track", q->track, | |
388 | "index", make_index(i), | |
389 | "parity", i % 2 ? "odd" : "even", | |
390 | "first", q == recent ? "true" : "false", | |
391 | "last", q->next ? "false" : "true", | |
392 | (char *)0))) | |
393 | return rc; | |
394 | return 0; | |
395 | } | |
396 | ||
397 | /* @new{TEMPLATE} | |
398 | * | |
399 | * For each track in the newly added list, expands TEMPLATE wit the following | |
400 | * expansions: | |
401 | * - @track@ to the UNQUOTED track name | |
402 | * - @index@ to the track number from 0 | |
403 | * - @parity@ to "even" or "odd" alternately | |
404 | * - @first@ to "true" on the first track and "false" otherwise | |
405 | * - @last@ to "true" on the last track and "false" otherwise | |
406 | * | |
407 | * Note that unlike @playing@, @queue@ and @recent@ which are otherwise | |
408 | * superficially similar, there is no @id@ sub-expansion here. | |
409 | */ | |
410 | static int exp_new(int attribute((unused)) nargs, | |
411 | const struct mx_node **args, | |
412 | struct sink *output, | |
413 | void attribute((unused)) *u) { | |
414 | struct queue_entry *q; | |
415 | int rc, i; | |
416 | ||
417 | lookup(DC_NEW); | |
418 | /* TODO perhaps we should generate an ID value for tracks in the new list */ | |
419 | for(i = 0; i < nnew; ++i) | |
420 | if((rc = mx_rewritel(args[0], | |
421 | "track", new[i], | |
422 | "index", make_index(i), | |
423 | "parity", i % 2 ? "odd" : "even", | |
424 | "first", i == 0 ? "true" : "false", | |
425 | "last", i == nnew - 1 ? "false" : "true", | |
426 | (char *)0))) | |
427 | return rc; | |
428 | return 0; | |
429 | } | |
430 | ||
bca4e2b7 | 431 | /* @volume{CHANNEL} |
9faa7a88 RK |
432 | * |
433 | * Expands to the volume in a given channel. CHANNEL must be "left" or | |
434 | * "right". | |
435 | */ | |
436 | static int exp_volume(int attribute((unused)) nargs, | |
437 | char **args, | |
438 | struct sink *output, | |
439 | void attribute((unused)) *u) { | |
440 | lookup(DC_VOLUME); | |
441 | return sink_write(output, "%d", | |
442 | !strcmp(args[0], "left") | |
443 | ? volume_left : volume_right) < 0 ? -1 : 0; | |
444 | } | |
445 | ||
bca4e2b7 | 446 | /* @isplaying |
9faa7a88 RK |
447 | * |
448 | * Expands to "true" if there is a playing track, otherwise "false". | |
449 | */ | |
450 | static int exp_isplaying(int attribute((unused)) nargs, | |
451 | char attribute((unused)) **args, | |
452 | struct sink *output, | |
453 | void attribute((unused)) *u) { | |
454 | lookup(DC_PLAYING); | |
455 | return mx_bool_result(output, !!playing); | |
456 | } | |
457 | ||
bca4e2b7 | 458 | /* @isqueue |
9faa7a88 RK |
459 | * |
460 | * Expands to "true" if there the queue is nonempty, otherwise "false". | |
461 | */ | |
462 | static int exp_isqueue(int attribute((unused)) nargs, | |
463 | char attribute((unused)) **args, | |
464 | struct sink *output, | |
465 | void attribute((unused)) *u) { | |
466 | lookup(DC_QUEUE); | |
467 | return mx_bool_result(output, !!queue); | |
468 | } | |
469 | ||
470 | /* @isrecent@ | |
471 | * | |
472 | * Expands to "true" if there the recently played list is nonempty, otherwise | |
473 | * "false". | |
474 | */ | |
475 | static int exp_isrecent(int attribute((unused)) nargs, | |
476 | char attribute((unused)) **args, | |
477 | struct sink *output, | |
478 | void attribute((unused)) *u) { | |
479 | lookup(DC_RECENT); | |
480 | return mx_bool_result(output, !!recent); | |
481 | } | |
482 | ||
bca4e2b7 | 483 | /* @isnew |
9faa7a88 RK |
484 | * |
485 | * Expands to "true" if there the newly added track list is nonempty, otherwise | |
486 | * "false". | |
487 | */ | |
488 | static int exp_isnew(int attribute((unused)) nargs, | |
489 | char attribute((unused)) **args, | |
490 | struct sink *output, | |
491 | void attribute((unused)) *u) { | |
492 | lookup(DC_NEW); | |
493 | return mx_bool_result(output, !!nnew); | |
494 | } | |
495 | ||
bca4e2b7 | 496 | /* @pref{TRACK}{KEY} |
9faa7a88 RK |
497 | * |
498 | * Expands to a track preference. | |
499 | */ | |
500 | static int exp_pref(int attribute((unused)) nargs, | |
501 | char **args, | |
502 | struct sink *output, | |
503 | void attribute((unused)) *u) { | |
504 | char *value; | |
505 | ||
506 | if(client && !disorder_get(client, args[0], args[1], &value)) | |
507 | return sink_write(output, cgi_sgmlquote(value)) < 0 ? -1 : 0; | |
508 | } | |
509 | ||
bca4e2b7 | 510 | /* @prefs{TRACK}{TEMPLATE} |
9faa7a88 RK |
511 | * |
512 | * For each track preference of track TRACK, expands TEMPLATE with the | |
513 | * following expansions: | |
514 | * - @name@ to the UNQUOTED preference name | |
515 | * - @index@ to the preference number from 0 | |
516 | * - @value@ to the UNQUOTED preference value | |
517 | * - @parity@ to "even" or "odd" alternately | |
518 | * - @first@ to "true" on the first preference and "false" otherwise | |
519 | * - @last@ to "true" on the last preference and "false" otherwise | |
520 | * | |
521 | * Use @quote@ to quote preference names and values where necessary; see below. | |
522 | */ | |
523 | static int exp_prefs(int attribute((unused)) nargs, | |
524 | const struct mx_node **args, | |
525 | struct sink *output, | |
526 | void attribute((unused)) *u) { | |
527 | int rc, i; | |
528 | struct kvp *k, *head; | |
529 | char *track; | |
530 | ||
531 | if((rc = mx_expandstr(args[0], &track, u, "argument #0 (TRACK)"))) | |
532 | return rc; | |
533 | if(!client || disorder_prefs(client, track, &head)) | |
534 | return 0; | |
535 | for(k = head, i = 0; k; k = k->next, ++i) | |
536 | if((rc = mx_rewritel(args[1], | |
537 | "index", make_index(i), | |
538 | "parity", i % 2 ? "odd" : "even", | |
539 | "name", k->name, | |
540 | "value", k->value, | |
541 | "first", k == head ? "true" : "false", | |
542 | "last", k->next ? "false" : "true", | |
543 | (char *)0))) | |
544 | return rc; | |
545 | return 0; | |
546 | } | |
547 | ||
bca4e2b7 | 548 | /* @transform{TRACK}{TYPE}{CONTEXT} |
9faa7a88 RK |
549 | * |
550 | * Transforms a track name (if TYPE is "track") or directory name (if type is | |
551 | * "dir"). CONTEXT should be the context, if it is left out then "display" is | |
552 | * assumed. | |
553 | */ | |
554 | static int exp_transform(int nargs, | |
555 | char **args, | |
556 | struct sink *output, | |
557 | void attribute((unused)) *u) { | |
558 | const char *t = trackname_transform(args[1], args[0], | |
559 | (nargs > 2 ? args[2] : "display"))); | |
560 | return sink_write(output, cgi_sgmlquote(t)) < 0 ? -1 : 0; | |
561 | } | |
562 | ||
563 | /* @enabled@ | |
564 | * | |
565 | * Expands to "true" if playing is enabled, otherwise "false". | |
566 | */ | |
567 | static int exp_enabled(int attribute((unused)) nargs, | |
568 | char attribute((unused)) **args, | |
569 | struct sink *output, | |
570 | void attribute((unused)) *u) { | |
571 | int enabled = 0; | |
572 | ||
573 | if(client) | |
574 | disorder_enabled(client, &enabled); | |
575 | return mx_bool_result(output, enabled); | |
576 | } | |
577 | ||
bca4e2b7 | 578 | /* @random-enabled |
9faa7a88 RK |
579 | * |
580 | * Expands to "true" if random play is enabled, otherwise "false". | |
581 | */ | |
582 | static int exp_enabled(int attribute((unused)) nargs, | |
583 | char attribute((unused)) **args, | |
584 | struct sink *output, | |
585 | void attribute((unused)) *u) { | |
586 | int enabled = 0; | |
587 | ||
588 | if(client) | |
589 | disorder_random_enabled(client, &enabled); | |
590 | return mx_bool_result(output, enabled); | |
591 | } | |
592 | ||
bca4e2b7 | 593 | /* @trackstate{TRACK |
9faa7a88 RK |
594 | * |
595 | * Expands to "playing" if TRACK is currently playing, or "queue" if it is in | |
596 | * the queue, otherwise to nothing. | |
597 | */ | |
598 | static int exp_trackstate(int attribute((unused)) nargs, | |
599 | char **args, | |
600 | struct sink *output, | |
601 | void attribute((unused)) *u) { | |
602 | char *track; | |
603 | struct queue_entry *q; | |
604 | ||
605 | if(!client) | |
606 | return 0; | |
607 | if(disorder_resolve(client, &track, args[0])) | |
608 | return 0; | |
609 | lookup(DC_PLAYING); | |
610 | if(playing && !strcmp(track, playing->track)) | |
611 | return sink_write(output, "playing") < 0 ? -1 : 0; | |
612 | lookup(DC_QUEUE); | |
613 | for(q = queue; q; q = q->next) | |
614 | if(!strcmp(track, q->track)) | |
615 | return sink_write(output, "queued") < 0 ? -1 : 0; | |
616 | return 0; | |
617 | } | |
618 | ||
bca4e2b7 | 619 | /* @thisurl |
9faa7a88 RK |
620 | * |
621 | * Expands to an UNQUOTED URL which points back to the current page. (NB it | |
622 | * might not be byte for byte identical - for instance, CGI arguments might be | |
623 | * re-ordered.) | |
624 | */ | |
625 | static int exp_thisurl(int attribute((unused)) nargs, | |
626 | char attribute((unused)) **args, | |
627 | struct sink *output, | |
628 | void attribute((unused)) *u) { | |
629 | return cgi_thisurl(config->url); | |
630 | } | |
631 | ||
bca4e2b7 | 632 | /* @resolve{TRACK} |
9faa7a88 RK |
633 | * |
634 | * Expands to an UNQUOTED name for the TRACK that is not an alias, or to | |
635 | * nothing if it is not a valid track. | |
636 | */ | |
637 | static int exp_resolve(int attribute((unused)) nargs, | |
638 | char **args, | |
639 | struct sink *output, | |
640 | void attribute((unused)) *u) { | |
641 | char *r; | |
642 | ||
643 | if(client && !disorder_resolve(client, &r, args[0])) | |
644 | return sink_write(output, r) < 0 ? -1 : 0; | |
645 | return 0; | |
646 | } | |
647 | ||
bca4e2b7 | 648 | /* @paused |
9faa7a88 RK |
649 | * |
650 | * Expands to "true" if the playing track is paused, to "false" if it is | |
651 | * playing (or if there is no playing track at all). | |
652 | */ | |
653 | static int exp_paused(int attribute((unused)) nargs, | |
654 | char attribute((unused)) **args, | |
655 | struct sink *output, | |
656 | void attribute((unused)) *u) { | |
657 | lookup(DC_PLAYING); | |
658 | return mx_bool_result(output, playing && playing->state == playing_paused); | |
659 | } | |
660 | ||
661 | /* @state{ID}@ | |
662 | * | |
663 | * Expands to the current state of track ID. | |
664 | */ | |
665 | static int exp_state(int attribute((unused)) nargs, | |
666 | char **args, | |
667 | struct sink *output, | |
668 | void attribute((unused)) *u) { | |
669 | struct queue_entry *q = findtrack(args[0]); | |
670 | ||
671 | if(q) | |
672 | return sink_write(output, playing_states[q->state]) < 0 ? -1 : 0; | |
673 | return 0; | |
674 | } | |
675 | ||
676 | /* @right{RIGHT}{WITH-RIGHT}{WITHOUT-RIGHT}@ | |
677 | * | |
678 | * Expands to WITH-RIGHT if the current user has right RIGHT, otherwise to | |
679 | * WITHOUT-RIGHT. The WITHOUT-RIGHT argument may be left out. | |
680 | * | |
681 | * If both WITH-RIGHT and WITHOUT-RIGHT are left out then expands to "true" if | |
682 | * the user has the right and "false" otherwise. | |
683 | * | |
684 | * If there is no connection to the server then expands to nothing (in all | |
685 | * cases). | |
686 | */ | |
687 | static int exp_right(int nargs, | |
688 | const struct mx_node **args, | |
689 | struct sink *output, | |
690 | void attribute((unused)) *u) { | |
691 | char *right; | |
692 | rights_type r; | |
693 | ||
694 | if(!client) | |
695 | return 0; | |
696 | lookup(DC_RIGHTS); | |
697 | if((rc = mx_expandstr(args[0], &rightname, u, "argument #0 (RIGHT)"))) | |
698 | return rc; | |
699 | if(parse_rights(right, &r, 1/*report*/)) | |
700 | return 0; | |
701 | /* Single-argument form */ | |
702 | if(nargs == 1) | |
703 | return mx_bool_result(output, !!(r & rights)); | |
704 | /* Multiple argument form */ | |
705 | if(r & rights) | |
706 | return mx_expandl(args[1], (char *)0); | |
707 | if(nargs == 3) | |
708 | return mx_expandl(args[2], (char *)0); | |
709 | return 0; | |
710 | } | |
711 | ||
bca4e2b7 | 712 | /* @userinfo{PROPERTY} |
9faa7a88 RK |
713 | * |
714 | * Expands to the named property of the current user. | |
715 | */ | |
716 | static int exp_userinfo(int attribute((unused)) nargs, | |
717 | char **args, | |
718 | struct sink *output, | |
719 | void attribute((unused)) *u) { | |
720 | char *v; | |
721 | ||
722 | if(client && !disorder_userinfo(client, disorder_user(client), args[0], &v)) | |
723 | return sink_write(output, v) < 0 ? -1 : 0; | |
724 | return 0; | |
725 | } | |
726 | ||
bca4e2b7 RK |
727 | /* @error |
728 | * | |
729 | * Expands to the latest error string. | |
730 | */ | |
731 | static int exp_error(int attribute((unused)) nargs, | |
732 | char attribute((unused)) **args, | |
733 | struct sink *output, | |
734 | void attribute((unused)) *u) { | |
735 | return sink_write(output, cgi_sgmlquote(error_string)) < 0 ? -1 : 0; | |
736 | } | |
737 | ||
738 | /* @userinfo{PROPERTY}@ | |
739 | * | |
9faa7a88 RK |
740 | /** @brief Register DisOrder-specific expansions */ |
741 | void register_disorder_expansions(void) { | |
742 | mx_register(exp_arg, 1, 1, "arg"); | |
743 | mx_register(exp_enabled, 0, 0, "enabled"); | |
bca4e2b7 | 744 | mx_register(exp_error, 0, 0, "error"); |
9faa7a88 RK |
745 | mx_register(exp_isnew, 0, 0, "isnew"); |
746 | mx_register(exp_isplaying, 0, 0, "isplaying"); | |
747 | mx_register(exp_isqueue, 0, 0, "isplaying"); | |
748 | mx_register(exp_isrecent, 0, 0, "isrecent"); | |
749 | mx_register(exp_length, 1, 1, "length"); | |
750 | mx_register(exp_movable, 1, 1, "movable"); | |
751 | mx_register(exp_part, 2, 3, "part"); | |
752 | mx_register(exp_pref, 2, 2, "pref"); | |
753 | mx_register(exp_quote, 1, 1, "quote"); | |
754 | mx_register(exp_random_enabled, 0, 0, "random-enabled"); | |
755 | mx_register(exp_removable, 1, 1, "removable"); | |
756 | mx_register(exp_resolve, 1, 1, "resolve"); | |
757 | mx_register(exp_right, 1, 3, "right"); | |
758 | mx_register(exp_server_version, 0, 0, "server-version"); | |
759 | mx_register(exp_state, 1, 1, "state"); | |
760 | mx_register(exp_thisurl, 0, 0, "thisurl"); | |
761 | mx_register(exp_trackstate, 1, 1, "trackstate"); | |
762 | mx_register(exp_transform, 2, 3, "transform"); | |
763 | mx_register(exp_url, 0, 0, "url"); | |
764 | mx_register(exp_user, 0, 0, "user"); | |
765 | mx_register(exp_userinfo, 1, 1, "userinfo"); | |
766 | mx_register(exp_version, 0, 0, "version"); | |
767 | mx_register(exp_volume, 1, 1, "volume"); | |
768 | mx_register(exp_when, 1, 1, "when"); | |
769 | mx_register(exp_who, 1, 1, "who"); | |
770 | mx_register_magic(exp_new, 1, 1, "new"); | |
771 | mx_register_magic(exp_playing, 0, 1, "playing"); | |
772 | mx_register_magic(exp_prefs, 2, 2, "prefs"); | |
773 | mx_register_magic(exp_queue, 1, 1, "queue"); | |
774 | mx_register_magic(exp_recent, 1, 1, "recent"); | |
775 | } | |
776 | ||
bca4e2b7 RK |
777 | void disorder_macros_reset(void) { |
778 | /* Junk the old connection if there is one */ | |
779 | if(client) | |
780 | disorder_close(client); | |
781 | /* Create a new connection */ | |
782 | client = disorder_new(0); | |
783 | /* Forget everything we knew */ | |
784 | flags = 0; | |
785 | } | |
786 | ||
9faa7a88 RK |
787 | /* |
788 | Local Variables: | |
789 | c-basic-offset:2 | |
790 | comment-column:40 | |
791 | fill-column:79 | |
792 | indent-tabs-mode:nil | |
793 | End: | |
794 | */ |