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,
105 static const char *noyes[] = { "no", "yes" };
107 static int writer_error(ev_source attribute((unused)) *ev,
113 D(("server writer_error %d %d", fd, errno_value));
114 if(errno_value == 0) {
118 //D(("server writer_error closes %d", fd));
119 info("server writer_error closes %d because all done", fd); /* TODO */
120 xclose(fd); /* reader is done too, close */
122 //D(("server writer_error shutdown %d SHUT_WR", fd));
123 info("server writer_error shutdown %d SHUT_WR", fd); /* TODO */
124 xshutdown(fd, SHUT_WR); /* reader is not done yet */
127 if(errno_value != EPIPE)
128 error(errno_value, "S%x write error on socket", c->tag);
130 ev_reader_cancel(c->r);
131 info("server writer_error closes %d because errno=%d", fd, errno_value); /* TODO */
137 static int reader_error(ev_source attribute((unused)) *ev,
143 D(("server reader_error %d %d", fd, errno_value));
144 error(errno, "S%x read error on socket", c->tag);
146 ev_writer_cancel(c->w);
150 info("reader_error closing fd %d", fd); /* TODO */
155 /* return true if we are talking to a trusted user */
156 static int trusted(struct conn *c) {
159 for(n = 0; (n < config->trust.n
160 && strcmp(config->trust.s[n], c->who)); ++n)
162 return n < config->trust.n;
165 static int c_disable(struct conn *c, char **vec, int nvec) {
167 disable_playing(c->who);
168 else if(nvec == 1 && !strcmp(vec[0], "now"))
169 disable_playing(c->who);
171 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
172 return 1; /* completed */
174 sink_writes(ev_writer_sink(c->w), "250 OK\n");
175 return 1; /* completed */
178 static int c_enable(struct conn *c,
179 char attribute((unused)) **vec,
180 int attribute((unused)) nvec) {
181 enable_playing(c->who, c->ev);
182 /* Enable implicitly unpauses if there is nothing playing */
183 if(paused && !playing) resume_playing(c->who);
184 sink_writes(ev_writer_sink(c->w), "250 OK\n");
185 return 1; /* completed */
188 static int c_enabled(struct conn *c,
189 char attribute((unused)) **vec,
190 int attribute((unused)) nvec) {
191 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]);
192 return 1; /* completed */
195 static int c_play(struct conn *c, char **vec,
196 int attribute((unused)) nvec) {
198 struct queue_entry *q;
200 if(!trackdb_exists(vec[0])) {
201 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
204 if(!(track = trackdb_resolve(vec[0]))) {
205 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
208 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
210 /* If we added the first track, and something is playing, then prepare the
211 * new track. If nothing is playing then we don't bother as it wouldn't gain
213 if(q == qhead.next && playing)
215 sink_writes(ev_writer_sink(c->w), "250 queued\n");
216 /* If the queue was empty but we are for some reason paused then
218 if(!playing) resume_playing(0);
220 return 1; /* completed */
223 static int c_remove(struct conn *c, char **vec,
224 int attribute((unused)) nvec) {
225 struct queue_entry *q;
227 if(!(q = queue_find(vec[0]))) {
228 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
231 if(config->restrictions & RESTRICT_REMOVE) {
232 /* can only remove tracks that you submitted */
233 if(!q->submitter || strcmp(q->submitter, c->who)) {
234 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
238 queue_remove(q, c->who);
239 /* De-prepare the track. */
241 /* If we removed the random track then add another one. */
242 if(q->state == playing_random)
244 /* Prepare whatever the next head track is. */
245 if(qhead.next != &qhead)
246 prepare(c->ev, qhead.next);
248 sink_writes(ev_writer_sink(c->w), "250 removed\n");
249 return 1; /* completed */
252 static int c_scratch(struct conn *c,
256 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
257 return 1; /* completed */
259 if(config->restrictions & RESTRICT_SCRATCH) {
260 /* can only scratch tracks you submitted and randomly selected ones */
261 if(playing->submitter && strcmp(playing->submitter, c->who)) {
262 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
266 scratch(c->who, nvec == 1 ? vec[0] : 0);
267 /* If you scratch an unpaused track then it is automatically unpaused */
269 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
270 return 1; /* completed */
273 static int c_pause(struct conn *c,
274 char attribute((unused)) **vec,
275 int attribute((unused)) nvec) {
277 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
278 return 1; /* completed */
281 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
282 return 1; /* completed */
284 if(pause_playing(c->who) < 0)
285 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
287 sink_writes(ev_writer_sink(c->w), "250 paused\n");
291 static int c_resume(struct conn *c,
292 char attribute((unused)) **vec,
293 int attribute((unused)) nvec) {
295 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
296 return 1; /* completed */
298 resume_playing(c->who);
299 sink_writes(ev_writer_sink(c->w), "250 paused\n");
303 static int c_shutdown(struct conn *c,
304 char attribute((unused)) **vec,
305 int attribute((unused)) nvec) {
306 info("S%x shut down by %s", c->tag, c->who);
307 sink_writes(ev_writer_sink(c->w), "250 shutting down\n");
308 ev_writer_flush(c->w);
312 static int c_reconfigure(struct conn *c,
313 char attribute((unused)) **vec,
314 int attribute((unused)) nvec) {
315 info("S%x reconfigure by %s", c->tag, c->who);
316 if(reconfigure(c->ev, 1))
317 sink_writes(ev_writer_sink(c->w), "550 error reading new config\n");
319 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
320 return 1; /* completed */
323 static int c_rescan(struct conn *c,
324 char attribute((unused)) **vec,
325 int attribute((unused)) nvec) {
326 info("S%x rescan by %s", c->tag, c->who);
327 trackdb_rescan(c->ev);
328 sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n");
329 return 1; /* completed */
332 static int c_version(struct conn *c,
333 char attribute((unused)) **vec,
334 int attribute((unused)) nvec) {
335 /* VERSION had better only use the basic character set */
336 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_version_string);
337 return 1; /* completed */
340 static int c_playing(struct conn *c,
341 char attribute((unused)) **vec,
342 int attribute((unused)) nvec) {
344 queue_fix_sofar(playing);
345 playing->expected = 0;
346 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
348 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
349 return 1; /* completed */
352 static int c_become(struct conn *c,
354 int attribute((unused)) nvec) {
356 sink_writes(ev_writer_sink(c->w), "230 OK\n");
360 static int c_user(struct conn *c,
362 int attribute((unused)) nvec) {
367 struct sockaddr_in in;
368 struct sockaddr_in6 in6;
374 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
377 /* get connection data */
379 if(getpeername(c->fd, &u.sa, &l) < 0) {
380 error(errno, "S%x error calling getpeername", c->tag);
381 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
384 if(c->l->pf != PF_UNIX) {
385 if((n = getnameinfo(&u.sa, l,
386 host, sizeof host, 0, 0, NI_NUMERICHOST))) {
387 error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n));
388 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
392 strcpy(host, "local");
394 for(n = 0; n < config->allow.n
395 && strcmp(config->allow.s[n].s[0], vec[0]); ++n)
397 /* if it's a real user check whether the response is right */
398 if(n >= config->allow.n) {
399 info("S%x unknown user '%s' from %s", c->tag, vec[0], host);
400 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
403 res = authhash(c->nonce, sizeof c->nonce, config->allow.s[n].s[1],
404 config->authorization_algorithm);
405 if(wideopen || (res && !strcmp(res, vec[1]))) {
407 /* currently we only bother logging remote connections */
408 if(c->l->pf != PF_UNIX)
409 info("S%x %s connected from %s", c->tag, vec[0], host);
410 sink_writes(ev_writer_sink(c->w), "230 OK\n");
413 /* oops, response was wrong */
414 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
415 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
419 static int c_recent(struct conn *c,
420 char attribute((unused)) **vec,
421 int attribute((unused)) nvec) {
422 const struct queue_entry *q;
424 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
425 for(q = phead.next; q != &phead; q = q->next)
426 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
427 sink_writes(ev_writer_sink(c->w), ".\n");
428 return 1; /* completed */
431 static int c_queue(struct conn *c,
432 char attribute((unused)) **vec,
433 int attribute((unused)) nvec) {
434 struct queue_entry *q;
439 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
440 if(playing_is_enabled() && !paused) {
442 queue_fix_sofar(playing);
443 if((l = trackdb_get(playing->track, "_length"))
444 && (length = atol(l))) {
446 when += length - playing->sofar + config->gap;
449 /* Nothing is playing but playing is enabled, so whatever is
450 * first in the queue can be expected to start immediately. */
453 for(q = qhead.next; q != &qhead; q = q->next) {
454 /* fill in estimated start time */
456 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
457 /* update for next track */
459 if((l = trackdb_get(q->track, "_length"))
460 && (length = atol(l)))
461 when += length + config->gap;
466 sink_writes(ev_writer_sink(c->w), ".\n");
467 return 1; /* completed */
470 static int output_list(struct conn *c, char **vec) {
472 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
473 sink_writes(ev_writer_sink(c->w), ".\n");
477 static int files_dirs(struct conn *c,
480 enum trackdb_listable what) {
481 const char *dir, *re, *errstr;
487 case 0: dir = 0; re = 0; break;
488 case 1: dir = vec[0]; re = 0; break;
489 case 2: dir = vec[0]; re = vec[1]; break;
492 /* A bit of a bodge to make sure the args don't trample on cache keys */
493 if(dir && strchr(dir, '\n')) {
494 sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n");
497 if(re && strchr(re, '\n')) {
498 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
501 /* We bother eliminating "" because the web interface is relatively
502 * likely to send it */
504 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
505 fvec = (char **)cache_get(&cache_files_type, key);
507 /* Got a cache hit, don't store the answer in the cache */
510 rec = 0; /* quieten compiler */
512 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
514 if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8,
515 &errstr, &erroffset, 0))) {
516 sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n",
520 /* It only counts as a miss if the regexp was valid. */
521 ++cache_files_misses;
524 /* No regexp, don't bother caching the result */
530 /* No cache hit (either because a miss, or because we did not look) so do
533 fvec = trackdb_list(dir, 0, what, rec);
535 fvec = trackdb_list(0, 0, what, rec);
538 /* Put the answer in the cache */
539 cache_put(&cache_files_type, key, fvec);
540 sink_writes(ev_writer_sink(c->w), "253 Listing follow\n");
541 return output_list(c, fvec);
544 static int c_files(struct conn *c,
547 return files_dirs(c, vec, nvec, trackdb_files);
550 static int c_dirs(struct conn *c,
553 return files_dirs(c, vec, nvec, trackdb_directories);
556 static int c_allfiles(struct conn *c,
559 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
562 static int c_get(struct conn *c,
564 int attribute((unused)) nvec) {
567 if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1])))
568 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
570 sink_writes(ev_writer_sink(c->w), "550 not found\n");
574 static int c_length(struct conn *c,
576 int attribute((unused)) nvec) {
577 const char *track, *v;
579 if(!(track = trackdb_resolve(vec[0]))) {
580 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
583 if((v = trackdb_get(track, "_length")))
584 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
586 sink_writes(ev_writer_sink(c->w), "550 not found\n");
590 static int c_set(struct conn *c,
592 int attribute((unused)) nvec) {
593 if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2]))
594 sink_writes(ev_writer_sink(c->w), "250 OK\n");
596 sink_writes(ev_writer_sink(c->w), "550 not found\n");
600 static int c_prefs(struct conn *c,
602 int attribute((unused)) nvec) {
605 k = trackdb_get_all(vec[0]);
606 sink_writes(ev_writer_sink(c->w), "253 prefs follow\n");
607 for(; k; k = k->next)
608 if(k->name[0] != '_') /* omit internal values */
609 sink_printf(ev_writer_sink(c->w),
610 " %s %s\n", quoteutf8(k->name), quoteutf8(k->value));
611 sink_writes(ev_writer_sink(c->w), ".\n");
615 static int c_exists(struct conn *c,
617 int attribute((unused)) nvec) {
618 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
622 static void search_parse_error(const char *msg, void *u) {
623 *(const char **)u = msg;
626 static int c_search(struct conn *c,
628 int attribute((unused)) nvec) {
629 char **terms, **results;
630 int nterms, nresults, n;
631 const char *e = "unknown error";
633 /* This is a bit of a bodge. Initially it's there to make the eclient
634 * interface a bit more convenient to add searching to, but it has the more
635 * compelling advantage that if everything uses it, then interpretation of
636 * user-supplied search strings will be the same everywhere. */
637 if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) {
638 sink_printf(ev_writer_sink(c->w), "550 %s\n", e);
640 results = trackdb_search(terms, nterms, &nresults);
641 sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults);
642 for(n = 0; n < nresults; ++n)
643 sink_printf(ev_writer_sink(c->w), "%s\n", results[n]);
644 sink_writes(ev_writer_sink(c->w), ".\n");
649 static int c_random_enable(struct conn *c,
650 char attribute((unused)) **vec,
651 int attribute((unused)) nvec) {
652 enable_random(c->who, c->ev);
653 /* Enable implicitly unpauses if there is nothing playing */
654 if(paused && !playing) resume_playing(c->who);
655 sink_writes(ev_writer_sink(c->w), "250 OK\n");
656 return 1; /* completed */
659 static int c_random_disable(struct conn *c,
660 char attribute((unused)) **vec,
661 int attribute((unused)) nvec) {
662 disable_random(c->who);
663 sink_writes(ev_writer_sink(c->w), "250 OK\n");
664 return 1; /* completed */
667 static int c_random_enabled(struct conn *c,
668 char attribute((unused)) **vec,
669 int attribute((unused)) nvec) {
670 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]);
671 return 1; /* completed */
674 static void got_stats(char *stats, void *u) {
675 struct conn *const c = u;
677 sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats);
678 /* Now we can start processing commands again */
679 ev_reader_enable(c->r);
682 static int c_stats(struct conn *c,
683 char attribute((unused)) **vec,
684 int attribute((unused)) nvec) {
685 trackdb_stats_subprocess(c->ev, got_stats, c);
686 return 0; /* not yet complete */
689 static int c_volume(struct conn *c,
700 l = r = atoi(vec[0]);
711 if(mixer_control(&l, &r, set))
712 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
714 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
715 if(l != volume_left || r != volume_right) {
718 snprintf(lb, sizeof lb, "%d", l);
719 snprintf(rb, sizeof rb, "%d", r);
720 eventlog("volume", lb, rb, (char *)0);
726 /* we are logging, and some data is available to read */
727 static int logging_reader_callback(ev_source *ev,
736 /* don't log to this conn any more */
737 eventlog_remove(c->lo);
739 /* Terminate the log output, but only if the writer hasn't been killed off
740 * from a failure on some earlier write */
741 sink_writes(ev_writer_sink(c->w), ".\n");
743 /* restore the reader callback */
744 c->reader = reader_callback;
745 /* ...and exit via it */
746 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
749 static void logclient(const char *msg, void *user) {
750 struct conn *c = user;
753 /* This connection has gone up in smoke for some reason */
754 eventlog_remove(c->lo);
757 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
758 (uintmax_t)time(0), msg);
761 static int c_log(struct conn *c,
762 char attribute((unused)) **vec,
763 int attribute((unused)) nvec) {
766 sink_writes(ev_writer_sink(c->w), "254 OK\n");
767 /* pump out initial state */
769 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
771 playing_is_enabled() ? "enable_play" : "disable_play");
772 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
774 random_is_enabled() ? "enable_random" : "disable_random");
775 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
777 paused ? "pause" : "resume");
779 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
782 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
783 (uintmax_t)now, volume_left, volume_right);
784 c->lo = xmalloc(sizeof *c->lo);
785 c->lo->fn = logclient;
788 c->reader = logging_reader_callback;
792 static void post_move_cleanup(void) {
793 struct queue_entry *q;
795 /* If we have caused any random tracks to not be at the end then we make them
796 * no longer be random. */
797 for(q = qhead.next; q != &qhead; q = q->next)
798 if(q->state == playing_random && q->next != &qhead)
799 q->state = playing_unplayed;
800 /* That might mean we need to add a new random track. */
805 static int c_move(struct conn *c,
807 int attribute((unused)) nvec) {
808 struct queue_entry *q;
811 if(config->restrictions & RESTRICT_MOVE) {
813 sink_writes(ev_writer_sink(c->w),
814 "550 only trusted users can move tracks\n");
818 if(!(q = queue_find(vec[0]))) {
819 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
822 n = queue_move(q, atoi(vec[1]), c->who);
824 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
825 /* If we've moved to the head of the queue then prepare the track. */
831 static int c_moveafter(struct conn *c,
833 int attribute((unused)) nvec) {
834 struct queue_entry *q, **qs;
837 if(config->restrictions & RESTRICT_MOVE) {
839 sink_writes(ev_writer_sink(c->w),
840 "550 only trusted users can move tracks\n");
845 if(!(q = queue_find(vec[0]))) {
846 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
853 qs = xcalloc(nvec, sizeof *qs);
854 for(n = 0; n < nvec; ++n)
855 if(!(qs[n] = queue_find(vec[n]))) {
856 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
859 queue_moveafter(q, nvec, qs, c->who);
861 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
862 /* If we've moved to the head of the queue then prepare the track. */
868 static int c_part(struct conn *c,
870 int attribute((unused)) nvec) {
871 sink_printf(ev_writer_sink(c->w), "252 %s\n",
872 trackdb_getpart(vec[0], vec[1], vec[2]));
876 static int c_resolve(struct conn *c,
878 int attribute((unused)) nvec) {
881 if(!(track = trackdb_resolve(vec[0]))) {
882 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
885 sink_printf(ev_writer_sink(c->w), "252 %s\n", track);
889 static int c_tags(struct conn *c,
890 char attribute((unused)) **vec,
891 int attribute((unused)) nvec) {
892 char **tags = trackdb_alltags();
894 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
896 sink_printf(ev_writer_sink(c->w), "%s%s\n",
897 **tags == '.' ? "." : "", *tags);
900 sink_writes(ev_writer_sink(c->w), ".\n");
901 return 1; /* completed */
905 static int c_set_global(struct conn *c,
907 int attribute((unused)) nvec) {
908 trackdb_set_global(vec[0], vec[1], c->who);
909 sink_printf(ev_writer_sink(c->w), "250 OK\n");
913 static int c_get_global(struct conn *c,
915 int attribute((unused)) nvec) {
916 const char *s = trackdb_get_global(vec[0]);
919 sink_printf(ev_writer_sink(c->w), "252 %s\n", s);
921 sink_writes(ev_writer_sink(c->w), "550 not found\n");
925 static int c_nop(struct conn *c,
926 char attribute((unused)) **vec,
927 int attribute((unused)) nvec) {
928 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
932 static int c_new(struct conn *c,
935 char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX);
937 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
939 sink_printf(ev_writer_sink(c->w), "%s%s\n",
940 **tracks == '.' ? "." : "", *tracks);
943 sink_writes(ev_writer_sink(c->w), ".\n");
944 return 1; /* completed */
948 static int c_rtp_address(struct conn *c,
949 char attribute((unused)) **vec,
950 int attribute((unused)) nvec) {
951 if(config->speaker_backend == BACKEND_NETWORK) {
952 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
953 quoteutf8(config->broadcast.s[0]),
954 quoteutf8(config->broadcast.s[1]));
956 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
960 #define C_AUTH 0001 /* must be authenticated */
961 #define C_TRUSTED 0002 /* must be trusted user */
963 static const struct command {
965 int minargs, maxargs;
966 int (*fn)(struct conn *, char **, int);
969 { "allfiles", 0, 2, c_allfiles, C_AUTH },
970 { "become", 1, 1, c_become, C_AUTH|C_TRUSTED },
971 { "dirs", 0, 2, c_dirs, C_AUTH },
972 { "disable", 0, 1, c_disable, C_AUTH },
973 { "enable", 0, 0, c_enable, C_AUTH },
974 { "enabled", 0, 0, c_enabled, C_AUTH },
975 { "exists", 1, 1, c_exists, C_AUTH },
976 { "files", 0, 2, c_files, C_AUTH },
977 { "get", 2, 2, c_get, C_AUTH },
978 { "get-global", 1, 1, c_get_global, C_AUTH },
979 { "length", 1, 1, c_length, C_AUTH },
980 { "log", 0, 0, c_log, C_AUTH },
981 { "move", 2, 2, c_move, C_AUTH },
982 { "moveafter", 1, INT_MAX, c_moveafter, C_AUTH },
983 { "new", 0, 1, c_new, C_AUTH },
984 { "nop", 0, 0, c_nop, C_AUTH },
985 { "part", 3, 3, c_part, C_AUTH },
986 { "pause", 0, 0, c_pause, C_AUTH },
987 { "play", 1, 1, c_play, C_AUTH },
988 { "playing", 0, 0, c_playing, C_AUTH },
989 { "prefs", 1, 1, c_prefs, C_AUTH },
990 { "queue", 0, 0, c_queue, C_AUTH },
991 { "random-disable", 0, 0, c_random_disable, C_AUTH },
992 { "random-enable", 0, 0, c_random_enable, C_AUTH },
993 { "random-enabled", 0, 0, c_random_enabled, C_AUTH },
994 { "recent", 0, 0, c_recent, C_AUTH },
995 { "reconfigure", 0, 0, c_reconfigure, C_AUTH|C_TRUSTED },
996 { "remove", 1, 1, c_remove, C_AUTH },
997 { "rescan", 0, 0, c_rescan, C_AUTH|C_TRUSTED },
998 { "resolve", 1, 1, c_resolve, C_AUTH },
999 { "resume", 0, 0, c_resume, C_AUTH },
1000 { "rtp-address", 0, 0, c_rtp_address, C_AUTH },
1001 { "scratch", 0, 1, c_scratch, C_AUTH },
1002 { "search", 1, 1, c_search, C_AUTH },
1003 { "set", 3, 3, c_set, C_AUTH, },
1004 { "set-global", 2, 2, c_set_global, C_AUTH },
1005 { "shutdown", 0, 0, c_shutdown, C_AUTH|C_TRUSTED },
1006 { "stats", 0, 0, c_stats, C_AUTH },
1007 { "tags", 0, 0, c_tags, C_AUTH },
1008 { "unset", 2, 2, c_set, C_AUTH },
1009 { "unset-global", 1, 1, c_set_global, C_AUTH },
1010 { "user", 2, 2, c_user, 0 },
1011 { "version", 0, 0, c_version, C_AUTH },
1012 { "volume", 0, 2, c_volume, C_AUTH }
1015 static void command_error(const char *msg, void *u) {
1018 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1021 /* process a command. Return 1 if complete, 0 if incomplete. */
1022 static int command(struct conn *c, char *line) {
1026 D(("server command %s", line));
1027 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1028 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1032 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1035 if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0)
1036 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1038 if((commands[n].flags & C_AUTH) && !c->who) {
1039 sink_writes(ev_writer_sink(c->w), "530 not authenticated\n");
1042 if((commands[n].flags & C_TRUSTED) && !trusted(c)) {
1043 sink_writes(ev_writer_sink(c->w), "530 insufficient privilege\n");
1048 if(nvec < commands[n].minargs) {
1049 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1052 if(nvec > commands[n].maxargs) {
1053 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1056 return commands[n].fn(c, vec, nvec);
1058 return 1; /* completed */
1061 /* redirect to the right reader callback for our current state */
1062 static int redirect_reader_callback(ev_source *ev,
1071 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
1074 /* the main command reader */
1075 static int reader_callback(ev_source attribute((unused)) *ev,
1077 int attribute((unused)) fd,
1086 D(("server reader_callback"));
1087 while((eol = memchr(ptr, '\n', bytes))) {
1089 ev_reader_consume(reader, eol - (char *)ptr);
1090 complete = command(c, ptr);
1091 bytes -= (eol - (char *)ptr);
1094 /* the command had better have set a new reader callback */
1096 /* there are further bytes to read, or we are at eof; arrange for the
1097 * command's reader callback to handle them */
1098 return ev_reader_incomplete(reader);
1099 /* nothing's going on right now */
1102 /* command completed, we can go around and handle the next one */
1106 error(0, "S%x unterminated line", c->tag);
1108 return ev_writer_close(c->w);
1113 static int listen_callback(ev_source *ev,
1115 const struct sockaddr attribute((unused)) *remote,
1116 socklen_t attribute((unused)) rlen,
1118 const struct listener *l = u;
1119 struct conn *c = xmalloc(sizeof *c);
1120 static unsigned tags;
1122 D(("server listen_callback fd %d (%s)", fd, l->name));
1127 c->w = ev_writer_new(ev, fd, writer_error, c,
1129 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
1132 c->reader = reader_callback;
1134 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
1135 if(!strcmp(config->authorization_algorithm, "sha1")
1136 || !strcmp(config->authorization_algorithm, "SHA1")) {
1137 sink_printf(ev_writer_sink(c->w), "231 %s\n",
1138 hex(c->nonce, sizeof c->nonce));
1140 sink_printf(ev_writer_sink(c->w), "231 %s %s\n",
1141 config->authorization_algorithm,
1142 hex(c->nonce, sizeof c->nonce));
1147 int server_start(ev_source *ev, int pf,
1148 size_t socklen, const struct sockaddr *sa,
1151 struct listener *l = xmalloc(sizeof *l);
1152 static const int one = 1;
1154 D(("server_init socket %s", name));
1155 fd = xsocket(pf, SOCK_STREAM, 0);
1156 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1157 if(bind(fd, sa, socklen) < 0) {
1158 error(errno, "error binding to %s", name);
1166 if(ev_listen(ev, fd, listen_callback, l, "server listener"))
1171 int server_stop(ev_source *ev, int fd) {
1173 return ev_listen_cancel(ev, fd);