2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell
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.
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.
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
25 #include <sys/types.h>
26 #include <sys/socket.h>
39 #include <netinet/in.h>
45 #include "server-queue.h"
52 #include "configuration.h"
62 #include "trackname.h"
68 # define NONCE_SIZE 16
71 int volume_left, volume_right; /* last known volume */
73 /** @brief Accept all well-formed login attempts
91 unsigned char nonce[NONCE_SIZE];
92 ev_reader_callback *reader;
93 struct eventlog_output *lo;
94 const struct listener *l;
97 static int reader_callback(ev_source *ev,
104 static const char *noyes[] = { "no", "yes" };
106 static int writer_error(ev_source attribute((unused)) *ev,
111 D(("server writer_error %d", errno_value));
112 info("writer_error S%x %d", c->tag, errno_value);
113 if(errno_value == 0) {
115 error(errno_value, "S%x writer completed", c->tag); /* TODO */
117 if(errno_value != EPIPE)
118 error(errno_value, "S%x write error on socket", c->tag);
119 info("cancel reader");
120 ev_reader_cancel(c->r);
121 info("done cancel reader");
127 static int reader_error(ev_source attribute((unused)) *ev,
132 D(("server reader_error %d", errno_value));
133 info("reader_error S%x %d", c->tag, errno_value);
134 error(errno_value, "S%x read error on socket", c->tag);
135 ev_writer_close(c->w);
140 /* return true if we are talking to a trusted user */
141 static int trusted(struct conn *c) {
144 for(n = 0; (n < config->trust.n
145 && strcmp(config->trust.s[n], c->who)); ++n)
147 return n < config->trust.n;
150 static int c_disable(struct conn *c, char **vec, int nvec) {
152 disable_playing(c->who);
153 else if(nvec == 1 && !strcmp(vec[0], "now"))
154 disable_playing(c->who);
156 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
157 return 1; /* completed */
159 sink_writes(ev_writer_sink(c->w), "250 OK\n");
160 return 1; /* completed */
163 static int c_enable(struct conn *c,
164 char attribute((unused)) **vec,
165 int attribute((unused)) nvec) {
166 enable_playing(c->who, c->ev);
167 /* Enable implicitly unpauses if there is nothing playing */
168 if(paused && !playing) resume_playing(c->who);
169 sink_writes(ev_writer_sink(c->w), "250 OK\n");
170 return 1; /* completed */
173 static int c_enabled(struct conn *c,
174 char attribute((unused)) **vec,
175 int attribute((unused)) nvec) {
176 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]);
177 return 1; /* completed */
180 static int c_play(struct conn *c, char **vec,
181 int attribute((unused)) nvec) {
183 struct queue_entry *q;
185 if(!trackdb_exists(vec[0])) {
186 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
189 if(!(track = trackdb_resolve(vec[0]))) {
190 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
193 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
195 /* If we added the first track, and something is playing, then prepare the
196 * new track. If nothing is playing then we don't bother as it wouldn't gain
198 if(q == qhead.next && playing)
200 sink_writes(ev_writer_sink(c->w), "250 queued\n");
201 /* If the queue was empty but we are for some reason paused then
203 if(!playing) resume_playing(0);
205 return 1; /* completed */
208 static int c_remove(struct conn *c, char **vec,
209 int attribute((unused)) nvec) {
210 struct queue_entry *q;
212 if(!(q = queue_find(vec[0]))) {
213 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
216 if(config->restrictions & RESTRICT_REMOVE) {
217 /* can only remove tracks that you submitted */
218 if(!q->submitter || strcmp(q->submitter, c->who)) {
219 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
223 queue_remove(q, c->who);
224 /* De-prepare the track. */
226 /* If we removed the random track then add another one. */
227 if(q->state == playing_random)
229 /* Prepare whatever the next head track is. */
230 if(qhead.next != &qhead)
231 prepare(c->ev, qhead.next);
233 sink_writes(ev_writer_sink(c->w), "250 removed\n");
234 return 1; /* completed */
237 static int c_scratch(struct conn *c,
241 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
242 return 1; /* completed */
244 if(config->restrictions & RESTRICT_SCRATCH) {
245 /* can only scratch tracks you submitted and randomly selected ones */
246 if(playing->submitter && strcmp(playing->submitter, c->who)) {
247 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
251 scratch(c->who, nvec == 1 ? vec[0] : 0);
252 /* If you scratch an unpaused track then it is automatically unpaused */
254 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
255 return 1; /* completed */
258 static int c_pause(struct conn *c,
259 char attribute((unused)) **vec,
260 int attribute((unused)) nvec) {
262 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
263 return 1; /* completed */
266 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
267 return 1; /* completed */
269 if(pause_playing(c->who) < 0)
270 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
272 sink_writes(ev_writer_sink(c->w), "250 paused\n");
276 static int c_resume(struct conn *c,
277 char attribute((unused)) **vec,
278 int attribute((unused)) nvec) {
280 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
281 return 1; /* completed */
283 resume_playing(c->who);
284 sink_writes(ev_writer_sink(c->w), "250 paused\n");
288 static int c_shutdown(struct conn *c,
289 char attribute((unused)) **vec,
290 int attribute((unused)) nvec) {
291 info("S%x shut down by %s", c->tag, c->who);
292 sink_writes(ev_writer_sink(c->w), "250 shutting down\n");
293 ev_writer_flush(c->w);
297 static int c_reconfigure(struct conn *c,
298 char attribute((unused)) **vec,
299 int attribute((unused)) nvec) {
300 info("S%x reconfigure by %s", c->tag, c->who);
301 if(reconfigure(c->ev, 1))
302 sink_writes(ev_writer_sink(c->w), "550 error reading new config\n");
304 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
305 return 1; /* completed */
308 static int c_rescan(struct conn *c,
309 char attribute((unused)) **vec,
310 int attribute((unused)) nvec) {
311 info("S%x rescan by %s", c->tag, c->who);
312 trackdb_rescan(c->ev);
313 sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n");
314 return 1; /* completed */
317 static int c_version(struct conn *c,
318 char attribute((unused)) **vec,
319 int attribute((unused)) nvec) {
320 /* VERSION had better only use the basic character set */
321 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_version_string);
322 return 1; /* completed */
325 static int c_playing(struct conn *c,
326 char attribute((unused)) **vec,
327 int attribute((unused)) nvec) {
329 queue_fix_sofar(playing);
330 playing->expected = 0;
331 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
333 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
334 return 1; /* completed */
337 static int c_become(struct conn *c,
339 int attribute((unused)) nvec) {
341 sink_writes(ev_writer_sink(c->w), "230 OK\n");
345 static int c_user(struct conn *c,
347 int attribute((unused)) nvec) {
352 struct sockaddr_in in;
353 struct sockaddr_in6 in6;
359 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
362 /* get connection data */
364 if(getpeername(c->fd, &u.sa, &l) < 0) {
365 error(errno, "S%x error calling getpeername", c->tag);
366 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
369 if(c->l->pf != PF_UNIX) {
370 if((n = getnameinfo(&u.sa, l,
371 host, sizeof host, 0, 0, NI_NUMERICHOST))) {
372 error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n));
373 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
377 strcpy(host, "local");
379 for(n = 0; n < config->allow.n
380 && strcmp(config->allow.s[n].s[0], vec[0]); ++n)
382 /* if it's a real user check whether the response is right */
383 if(n >= config->allow.n) {
384 info("S%x unknown user '%s' from %s", c->tag, vec[0], host);
385 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
388 res = authhash(c->nonce, sizeof c->nonce, config->allow.s[n].s[1],
389 config->authorization_algorithm);
390 if(wideopen || (res && !strcmp(res, vec[1]))) {
392 /* currently we only bother logging remote connections */
393 if(c->l->pf != PF_UNIX)
394 info("S%x %s connected from %s", c->tag, vec[0], host);
395 sink_writes(ev_writer_sink(c->w), "230 OK\n");
398 /* oops, response was wrong */
399 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
400 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
404 static int c_recent(struct conn *c,
405 char attribute((unused)) **vec,
406 int attribute((unused)) nvec) {
407 const struct queue_entry *q;
409 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
410 for(q = phead.next; q != &phead; q = q->next)
411 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
412 sink_writes(ev_writer_sink(c->w), ".\n");
413 return 1; /* completed */
416 static int c_queue(struct conn *c,
417 char attribute((unused)) **vec,
418 int attribute((unused)) nvec) {
419 struct queue_entry *q;
424 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
425 if(playing_is_enabled() && !paused) {
427 queue_fix_sofar(playing);
428 if((l = trackdb_get(playing->track, "_length"))
429 && (length = atol(l))) {
431 when += length - playing->sofar + config->gap;
434 /* Nothing is playing but playing is enabled, so whatever is
435 * first in the queue can be expected to start immediately. */
438 for(q = qhead.next; q != &qhead; q = q->next) {
439 /* fill in estimated start time */
441 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
442 /* update for next track */
444 if((l = trackdb_get(q->track, "_length"))
445 && (length = atol(l)))
446 when += length + config->gap;
451 sink_writes(ev_writer_sink(c->w), ".\n");
452 return 1; /* completed */
455 static int output_list(struct conn *c, char **vec) {
457 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
458 sink_writes(ev_writer_sink(c->w), ".\n");
462 static int files_dirs(struct conn *c,
465 enum trackdb_listable what) {
466 const char *dir, *re, *errstr;
472 case 0: dir = 0; re = 0; break;
473 case 1: dir = vec[0]; re = 0; break;
474 case 2: dir = vec[0]; re = vec[1]; break;
477 /* A bit of a bodge to make sure the args don't trample on cache keys */
478 if(dir && strchr(dir, '\n')) {
479 sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n");
482 if(re && strchr(re, '\n')) {
483 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
486 /* We bother eliminating "" because the web interface is relatively
487 * likely to send it */
489 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
490 fvec = (char **)cache_get(&cache_files_type, key);
492 /* Got a cache hit, don't store the answer in the cache */
495 rec = 0; /* quieten compiler */
497 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
499 if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8,
500 &errstr, &erroffset, 0))) {
501 sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n",
505 /* It only counts as a miss if the regexp was valid. */
506 ++cache_files_misses;
509 /* No regexp, don't bother caching the result */
515 /* No cache hit (either because a miss, or because we did not look) so do
518 fvec = trackdb_list(dir, 0, what, rec);
520 fvec = trackdb_list(0, 0, what, rec);
523 /* Put the answer in the cache */
524 cache_put(&cache_files_type, key, fvec);
525 sink_writes(ev_writer_sink(c->w), "253 Listing follow\n");
526 return output_list(c, fvec);
529 static int c_files(struct conn *c,
532 return files_dirs(c, vec, nvec, trackdb_files);
535 static int c_dirs(struct conn *c,
538 return files_dirs(c, vec, nvec, trackdb_directories);
541 static int c_allfiles(struct conn *c,
544 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
547 static int c_get(struct conn *c,
549 int attribute((unused)) nvec) {
552 if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1])))
553 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
555 sink_writes(ev_writer_sink(c->w), "550 not found\n");
559 static int c_length(struct conn *c,
561 int attribute((unused)) nvec) {
562 const char *track, *v;
564 if(!(track = trackdb_resolve(vec[0]))) {
565 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
568 if((v = trackdb_get(track, "_length")))
569 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
571 sink_writes(ev_writer_sink(c->w), "550 not found\n");
575 static int c_set(struct conn *c,
577 int attribute((unused)) nvec) {
578 if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2]))
579 sink_writes(ev_writer_sink(c->w), "250 OK\n");
581 sink_writes(ev_writer_sink(c->w), "550 not found\n");
585 static int c_prefs(struct conn *c,
587 int attribute((unused)) nvec) {
590 k = trackdb_get_all(vec[0]);
591 sink_writes(ev_writer_sink(c->w), "253 prefs follow\n");
592 for(; k; k = k->next)
593 if(k->name[0] != '_') /* omit internal values */
594 sink_printf(ev_writer_sink(c->w),
595 " %s %s\n", quoteutf8(k->name), quoteutf8(k->value));
596 sink_writes(ev_writer_sink(c->w), ".\n");
600 static int c_exists(struct conn *c,
602 int attribute((unused)) nvec) {
603 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
607 static void search_parse_error(const char *msg, void *u) {
608 *(const char **)u = msg;
611 static int c_search(struct conn *c,
613 int attribute((unused)) nvec) {
614 char **terms, **results;
615 int nterms, nresults, n;
616 const char *e = "unknown error";
618 /* This is a bit of a bodge. Initially it's there to make the eclient
619 * interface a bit more convenient to add searching to, but it has the more
620 * compelling advantage that if everything uses it, then interpretation of
621 * user-supplied search strings will be the same everywhere. */
622 if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) {
623 sink_printf(ev_writer_sink(c->w), "550 %s\n", e);
625 results = trackdb_search(terms, nterms, &nresults);
626 sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults);
627 for(n = 0; n < nresults; ++n)
628 sink_printf(ev_writer_sink(c->w), "%s\n", results[n]);
629 sink_writes(ev_writer_sink(c->w), ".\n");
634 static int c_random_enable(struct conn *c,
635 char attribute((unused)) **vec,
636 int attribute((unused)) nvec) {
637 enable_random(c->who, c->ev);
638 /* Enable implicitly unpauses if there is nothing playing */
639 if(paused && !playing) resume_playing(c->who);
640 sink_writes(ev_writer_sink(c->w), "250 OK\n");
641 return 1; /* completed */
644 static int c_random_disable(struct conn *c,
645 char attribute((unused)) **vec,
646 int attribute((unused)) nvec) {
647 disable_random(c->who);
648 sink_writes(ev_writer_sink(c->w), "250 OK\n");
649 return 1; /* completed */
652 static int c_random_enabled(struct conn *c,
653 char attribute((unused)) **vec,
654 int attribute((unused)) nvec) {
655 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]);
656 return 1; /* completed */
659 static void got_stats(char *stats, void *u) {
660 struct conn *const c = u;
662 sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats);
663 /* Now we can start processing commands again */
664 ev_reader_enable(c->r);
667 static int c_stats(struct conn *c,
668 char attribute((unused)) **vec,
669 int attribute((unused)) nvec) {
670 trackdb_stats_subprocess(c->ev, got_stats, c);
671 return 0; /* not yet complete */
674 static int c_volume(struct conn *c,
685 l = r = atoi(vec[0]);
696 if(mixer_control(&l, &r, set))
697 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
699 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
700 if(l != volume_left || r != volume_right) {
703 snprintf(lb, sizeof lb, "%d", l);
704 snprintf(rb, sizeof rb, "%d", r);
705 eventlog("volume", lb, rb, (char *)0);
711 /* we are logging, and some data is available to read */
712 static int logging_reader_callback(ev_source *ev,
720 /* don't log to this conn any more */
721 eventlog_remove(c->lo);
723 /* Terminate the log output, but only if the writer hasn't been killed off
724 * from a failure on some earlier write */
725 sink_writes(ev_writer_sink(c->w), ".\n");
727 /* restore the reader callback */
728 c->reader = reader_callback;
729 /* ...and exit via it */
730 return c->reader(ev, reader, ptr, bytes, eof, u);
733 static void logclient(const char *msg, void *user) {
734 struct conn *c = user;
737 /* This connection has gone up in smoke for some reason */
738 eventlog_remove(c->lo);
741 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
742 (uintmax_t)time(0), msg);
745 static int c_log(struct conn *c,
746 char attribute((unused)) **vec,
747 int attribute((unused)) nvec) {
750 sink_writes(ev_writer_sink(c->w), "254 OK\n");
751 /* pump out initial state */
753 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
755 playing_is_enabled() ? "enable_play" : "disable_play");
756 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
758 random_is_enabled() ? "enable_random" : "disable_random");
759 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
761 paused ? "pause" : "resume");
763 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
766 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
767 (uintmax_t)now, volume_left, volume_right);
768 c->lo = xmalloc(sizeof *c->lo);
769 c->lo->fn = logclient;
772 c->reader = logging_reader_callback;
776 static void post_move_cleanup(void) {
777 struct queue_entry *q;
779 /* If we have caused any random tracks to not be at the end then we make them
780 * no longer be random. */
781 for(q = qhead.next; q != &qhead; q = q->next)
782 if(q->state == playing_random && q->next != &qhead)
783 q->state = playing_unplayed;
784 /* That might mean we need to add a new random track. */
789 static int c_move(struct conn *c,
791 int attribute((unused)) nvec) {
792 struct queue_entry *q;
795 if(config->restrictions & RESTRICT_MOVE) {
797 sink_writes(ev_writer_sink(c->w),
798 "550 only trusted users can move tracks\n");
802 if(!(q = queue_find(vec[0]))) {
803 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
806 n = queue_move(q, atoi(vec[1]), c->who);
808 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
809 /* If we've moved to the head of the queue then prepare the track. */
815 static int c_moveafter(struct conn *c,
817 int attribute((unused)) nvec) {
818 struct queue_entry *q, **qs;
821 if(config->restrictions & RESTRICT_MOVE) {
823 sink_writes(ev_writer_sink(c->w),
824 "550 only trusted users can move tracks\n");
829 if(!(q = queue_find(vec[0]))) {
830 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
837 qs = xcalloc(nvec, sizeof *qs);
838 for(n = 0; n < nvec; ++n)
839 if(!(qs[n] = queue_find(vec[n]))) {
840 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
843 queue_moveafter(q, nvec, qs, c->who);
845 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
846 /* If we've moved to the head of the queue then prepare the track. */
852 static int c_part(struct conn *c,
854 int attribute((unused)) nvec) {
855 sink_printf(ev_writer_sink(c->w), "252 %s\n",
856 trackdb_getpart(vec[0], vec[1], vec[2]));
860 static int c_resolve(struct conn *c,
862 int attribute((unused)) nvec) {
865 if(!(track = trackdb_resolve(vec[0]))) {
866 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
869 sink_printf(ev_writer_sink(c->w), "252 %s\n", track);
873 static int c_tags(struct conn *c,
874 char attribute((unused)) **vec,
875 int attribute((unused)) nvec) {
876 char **tags = trackdb_alltags();
878 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
880 sink_printf(ev_writer_sink(c->w), "%s%s\n",
881 **tags == '.' ? "." : "", *tags);
884 sink_writes(ev_writer_sink(c->w), ".\n");
885 return 1; /* completed */
889 static int c_set_global(struct conn *c,
891 int attribute((unused)) nvec) {
892 trackdb_set_global(vec[0], vec[1], c->who);
893 sink_printf(ev_writer_sink(c->w), "250 OK\n");
897 static int c_get_global(struct conn *c,
899 int attribute((unused)) nvec) {
900 const char *s = trackdb_get_global(vec[0]);
903 sink_printf(ev_writer_sink(c->w), "252 %s\n", s);
905 sink_writes(ev_writer_sink(c->w), "550 not found\n");
909 static int c_nop(struct conn *c,
910 char attribute((unused)) **vec,
911 int attribute((unused)) nvec) {
912 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
916 static int c_new(struct conn *c,
919 char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX);
921 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
923 sink_printf(ev_writer_sink(c->w), "%s%s\n",
924 **tracks == '.' ? "." : "", *tracks);
927 sink_writes(ev_writer_sink(c->w), ".\n");
928 return 1; /* completed */
932 static int c_rtp_address(struct conn *c,
933 char attribute((unused)) **vec,
934 int attribute((unused)) nvec) {
935 if(config->speaker_backend == BACKEND_NETWORK) {
936 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
937 quoteutf8(config->broadcast.s[0]),
938 quoteutf8(config->broadcast.s[1]));
940 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
944 #define C_AUTH 0001 /* must be authenticated */
945 #define C_TRUSTED 0002 /* must be trusted user */
947 static const struct command {
949 int minargs, maxargs;
950 int (*fn)(struct conn *, char **, int);
953 { "allfiles", 0, 2, c_allfiles, C_AUTH },
954 { "become", 1, 1, c_become, C_AUTH|C_TRUSTED },
955 { "dirs", 0, 2, c_dirs, C_AUTH },
956 { "disable", 0, 1, c_disable, C_AUTH },
957 { "enable", 0, 0, c_enable, C_AUTH },
958 { "enabled", 0, 0, c_enabled, C_AUTH },
959 { "exists", 1, 1, c_exists, C_AUTH },
960 { "files", 0, 2, c_files, C_AUTH },
961 { "get", 2, 2, c_get, C_AUTH },
962 { "get-global", 1, 1, c_get_global, C_AUTH },
963 { "length", 1, 1, c_length, C_AUTH },
964 { "log", 0, 0, c_log, C_AUTH },
965 { "move", 2, 2, c_move, C_AUTH },
966 { "moveafter", 1, INT_MAX, c_moveafter, C_AUTH },
967 { "new", 0, 1, c_new, C_AUTH },
968 { "nop", 0, 0, c_nop, C_AUTH },
969 { "part", 3, 3, c_part, C_AUTH },
970 { "pause", 0, 0, c_pause, C_AUTH },
971 { "play", 1, 1, c_play, C_AUTH },
972 { "playing", 0, 0, c_playing, C_AUTH },
973 { "prefs", 1, 1, c_prefs, C_AUTH },
974 { "queue", 0, 0, c_queue, C_AUTH },
975 { "random-disable", 0, 0, c_random_disable, C_AUTH },
976 { "random-enable", 0, 0, c_random_enable, C_AUTH },
977 { "random-enabled", 0, 0, c_random_enabled, C_AUTH },
978 { "recent", 0, 0, c_recent, C_AUTH },
979 { "reconfigure", 0, 0, c_reconfigure, C_AUTH|C_TRUSTED },
980 { "remove", 1, 1, c_remove, C_AUTH },
981 { "rescan", 0, 0, c_rescan, C_AUTH|C_TRUSTED },
982 { "resolve", 1, 1, c_resolve, C_AUTH },
983 { "resume", 0, 0, c_resume, C_AUTH },
984 { "rtp-address", 0, 0, c_rtp_address, C_AUTH },
985 { "scratch", 0, 1, c_scratch, C_AUTH },
986 { "search", 1, 1, c_search, C_AUTH },
987 { "set", 3, 3, c_set, C_AUTH, },
988 { "set-global", 2, 2, c_set_global, C_AUTH },
989 { "shutdown", 0, 0, c_shutdown, C_AUTH|C_TRUSTED },
990 { "stats", 0, 0, c_stats, C_AUTH },
991 { "tags", 0, 0, c_tags, C_AUTH },
992 { "unset", 2, 2, c_set, C_AUTH },
993 { "unset-global", 1, 1, c_set_global, C_AUTH },
994 { "user", 2, 2, c_user, 0 },
995 { "version", 0, 0, c_version, C_AUTH },
996 { "volume", 0, 2, c_volume, C_AUTH }
999 static void command_error(const char *msg, void *u) {
1002 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1005 /* process a command. Return 1 if complete, 0 if incomplete. */
1006 static int command(struct conn *c, char *line) {
1010 D(("server command %s", line));
1011 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1012 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1016 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1019 if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0)
1020 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1022 if((commands[n].flags & C_AUTH) && !c->who) {
1023 sink_writes(ev_writer_sink(c->w), "530 not authenticated\n");
1026 if((commands[n].flags & C_TRUSTED) && !trusted(c)) {
1027 sink_writes(ev_writer_sink(c->w), "530 insufficient privilege\n");
1032 if(nvec < commands[n].minargs) {
1033 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1036 if(nvec > commands[n].maxargs) {
1037 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1040 return commands[n].fn(c, vec, nvec);
1042 return 1; /* completed */
1045 /* redirect to the right reader callback for our current state */
1046 static int redirect_reader_callback(ev_source *ev,
1054 return c->reader(ev, reader, ptr, bytes, eof, u);
1057 /* the main command reader */
1058 static int reader_callback(ev_source attribute((unused)) *ev,
1068 D(("server reader_callback"));
1069 while((eol = memchr(ptr, '\n', bytes))) {
1071 ev_reader_consume(reader, eol - (char *)ptr);
1072 complete = command(c, ptr);
1073 bytes -= (eol - (char *)ptr);
1076 /* the command had better have set a new reader callback */
1078 /* there are further bytes to read, or we are at eof; arrange for the
1079 * command's reader callback to handle them */
1080 return ev_reader_incomplete(reader);
1081 /* nothing's going on right now */
1084 /* command completed, we can go around and handle the next one */
1088 error(0, "S%x unterminated line", c->tag);
1089 return ev_writer_close(c->w);
1094 static int listen_callback(ev_source *ev,
1096 const struct sockaddr attribute((unused)) *remote,
1097 socklen_t attribute((unused)) rlen,
1099 const struct listener *l = u;
1100 struct conn *c = xmalloc(sizeof *c);
1101 static unsigned tags;
1103 D(("server listen_callback fd %d (%s)", fd, l->name));
1108 c->w = ev_writer_new(ev, fd, writer_error, c,
1110 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
1114 c->reader = reader_callback;
1116 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
1117 if(!strcmp(config->authorization_algorithm, "sha1")
1118 || !strcmp(config->authorization_algorithm, "SHA1")) {
1119 sink_printf(ev_writer_sink(c->w), "231 %s\n",
1120 hex(c->nonce, sizeof c->nonce));
1122 sink_printf(ev_writer_sink(c->w), "231 %s %s\n",
1123 config->authorization_algorithm,
1124 hex(c->nonce, sizeof c->nonce));
1129 int server_start(ev_source *ev, int pf,
1130 size_t socklen, const struct sockaddr *sa,
1133 struct listener *l = xmalloc(sizeof *l);
1134 static const int one = 1;
1136 D(("server_init socket %s", name));
1137 fd = xsocket(pf, SOCK_STREAM, 0);
1138 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1139 if(bind(fd, sa, socklen) < 0) {
1140 error(errno, "error binding to %s", name);
1148 if(ev_listen(ev, fd, listen_callback, l, "server listener"))
1153 int server_stop(ev_source *ev, int fd) {
1155 return ev_listen_cancel(ev, fd);