35f352d868b19cf76d3fb334d1b6e246fdef021b
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
);
145 ev_writer_cancel(c
->w
);
147 info("reader_error closing fd %d", fd
); /* TODO */
152 /* return true if we are talking to a trusted user */
153 static int trusted(struct conn
*c
) {
156 for(n
= 0; (n
< config
->trust
.n
157 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
159 return n
< config
->trust
.n
;
162 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
164 disable_playing(c
->who
);
165 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
166 disable_playing(c
->who
);
168 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
169 return 1; /* completed */
171 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
172 return 1; /* completed */
175 static int c_enable(struct conn
*c
,
176 char attribute((unused
)) **vec
,
177 int attribute((unused
)) nvec
) {
178 enable_playing(c
->who
, c
->ev
);
179 /* Enable implicitly unpauses if there is nothing playing */
180 if(paused
&& !playing
) resume_playing(c
->who
);
181 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
182 return 1; /* completed */
185 static int c_enabled(struct conn
*c
,
186 char attribute((unused
)) **vec
,
187 int attribute((unused
)) nvec
) {
188 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
189 return 1; /* completed */
192 static int c_play(struct conn
*c
, char **vec
,
193 int attribute((unused
)) nvec
) {
195 struct queue_entry
*q
;
197 if(!trackdb_exists(vec
[0])) {
198 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
201 if(!(track
= trackdb_resolve(vec
[0]))) {
202 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
205 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
207 /* If we added the first track, and something is playing, then prepare the
208 * new track. If nothing is playing then we don't bother as it wouldn't gain
210 if(q
== qhead
.next
&& playing
)
212 sink_writes(ev_writer_sink(c
->w
), "250 queued\n");
213 /* If the queue was empty but we are for some reason paused then
215 if(!playing
) resume_playing(0);
217 return 1; /* completed */
220 static int c_remove(struct conn
*c
, char **vec
,
221 int attribute((unused
)) nvec
) {
222 struct queue_entry
*q
;
224 if(!(q
= queue_find(vec
[0]))) {
225 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
228 if(config
->restrictions
& RESTRICT_REMOVE
) {
229 /* can only remove tracks that you submitted */
230 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
231 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
235 queue_remove(q
, c
->who
);
236 /* De-prepare the track. */
238 /* If we removed the random track then add another one. */
239 if(q
->state
== playing_random
)
241 /* Prepare whatever the next head track is. */
242 if(qhead
.next
!= &qhead
)
243 prepare(c
->ev
, qhead
.next
);
245 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
246 return 1; /* completed */
249 static int c_scratch(struct conn
*c
,
253 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
254 return 1; /* completed */
256 if(config
->restrictions
& RESTRICT_SCRATCH
) {
257 /* can only scratch tracks you submitted and randomly selected ones */
258 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
259 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
263 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
264 /* If you scratch an unpaused track then it is automatically unpaused */
266 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
267 return 1; /* completed */
270 static int c_pause(struct conn
*c
,
271 char attribute((unused
)) **vec
,
272 int attribute((unused
)) nvec
) {
274 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
275 return 1; /* completed */
278 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
279 return 1; /* completed */
281 if(pause_playing(c
->who
) < 0)
282 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
284 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
288 static int c_resume(struct conn
*c
,
289 char attribute((unused
)) **vec
,
290 int attribute((unused
)) nvec
) {
292 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
293 return 1; /* completed */
295 resume_playing(c
->who
);
296 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
300 static int c_shutdown(struct conn
*c
,
301 char attribute((unused
)) **vec
,
302 int attribute((unused
)) nvec
) {
303 info("S%x shut down by %s", c
->tag
, c
->who
);
304 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
305 ev_writer_flush(c
->w
);
309 static int c_reconfigure(struct conn
*c
,
310 char attribute((unused
)) **vec
,
311 int attribute((unused
)) nvec
) {
312 info("S%x reconfigure by %s", c
->tag
, c
->who
);
313 if(reconfigure(c
->ev
, 1))
314 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
316 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
317 return 1; /* completed */
320 static int c_rescan(struct conn
*c
,
321 char attribute((unused
)) **vec
,
322 int attribute((unused
)) nvec
) {
323 info("S%x rescan by %s", c
->tag
, c
->who
);
324 trackdb_rescan(c
->ev
);
325 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
326 return 1; /* completed */
329 static int c_version(struct conn
*c
,
330 char attribute((unused
)) **vec
,
331 int attribute((unused
)) nvec
) {
332 /* VERSION had better only use the basic character set */
333 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_version_string
);
334 return 1; /* completed */
337 static int c_playing(struct conn
*c
,
338 char attribute((unused
)) **vec
,
339 int attribute((unused
)) nvec
) {
341 queue_fix_sofar(playing
);
342 playing
->expected
= 0;
343 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
345 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
346 return 1; /* completed */
349 static int c_become(struct conn
*c
,
351 int attribute((unused
)) nvec
) {
353 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
357 static int c_user(struct conn
*c
,
359 int attribute((unused
)) nvec
) {
364 struct sockaddr_in in
;
365 struct sockaddr_in6 in6
;
371 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
374 /* get connection data */
376 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
377 error(errno
, "S%x error calling getpeername", c
->tag
);
378 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
381 if(c
->l
->pf
!= PF_UNIX
) {
382 if((n
= getnameinfo(&u
.sa
, l
,
383 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
384 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
385 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
389 strcpy(host
, "local");
391 for(n
= 0; n
< config
->allow
.n
392 && strcmp(config
->allow
.s
[n
].s
[0], vec
[0]); ++n
)
394 /* if it's a real user check whether the response is right */
395 if(n
>= config
->allow
.n
) {
396 info("S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
397 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
400 res
= authhash(c
->nonce
, sizeof c
->nonce
, config
->allow
.s
[n
].s
[1],
401 config
->authorization_algorithm
);
402 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
404 /* currently we only bother logging remote connections */
405 if(c
->l
->pf
!= PF_UNIX
)
406 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
407 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
410 /* oops, response was wrong */
411 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
412 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
416 static int c_recent(struct conn
*c
,
417 char attribute((unused
)) **vec
,
418 int attribute((unused
)) nvec
) {
419 const struct queue_entry
*q
;
421 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
422 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
423 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
424 sink_writes(ev_writer_sink(c
->w
), ".\n");
425 return 1; /* completed */
428 static int c_queue(struct conn
*c
,
429 char attribute((unused
)) **vec
,
430 int attribute((unused
)) nvec
) {
431 struct queue_entry
*q
;
436 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
437 if(playing_is_enabled() && !paused
) {
439 queue_fix_sofar(playing
);
440 if((l
= trackdb_get(playing
->track
, "_length"))
441 && (length
= atol(l
))) {
443 when
+= length
- playing
->sofar
+ config
->gap
;
446 /* Nothing is playing but playing is enabled, so whatever is
447 * first in the queue can be expected to start immediately. */
450 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
451 /* fill in estimated start time */
453 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
454 /* update for next track */
456 if((l
= trackdb_get(q
->track
, "_length"))
457 && (length
= atol(l
)))
458 when
+= length
+ config
->gap
;
463 sink_writes(ev_writer_sink(c
->w
), ".\n");
464 return 1; /* completed */
467 static int output_list(struct conn
*c
, char **vec
) {
469 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
470 sink_writes(ev_writer_sink(c
->w
), ".\n");
474 static int files_dirs(struct conn
*c
,
477 enum trackdb_listable what
) {
478 const char *dir
, *re
, *errstr
;
484 case 0: dir
= 0; re
= 0; break;
485 case 1: dir
= vec
[0]; re
= 0; break;
486 case 2: dir
= vec
[0]; re
= vec
[1]; break;
489 /* A bit of a bodge to make sure the args don't trample on cache keys */
490 if(dir
&& strchr(dir
, '\n')) {
491 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
494 if(re
&& strchr(re
, '\n')) {
495 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
498 /* We bother eliminating "" because the web interface is relatively
499 * likely to send it */
501 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
502 fvec
= (char **)cache_get(&cache_files_type
, key
);
504 /* Got a cache hit, don't store the answer in the cache */
507 rec
= 0; /* quieten compiler */
509 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
511 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
512 &errstr
, &erroffset
, 0))) {
513 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
517 /* It only counts as a miss if the regexp was valid. */
518 ++cache_files_misses
;
521 /* No regexp, don't bother caching the result */
527 /* No cache hit (either because a miss, or because we did not look) so do
530 fvec
= trackdb_list(dir
, 0, what
, rec
);
532 fvec
= trackdb_list(0, 0, what
, rec
);
535 /* Put the answer in the cache */
536 cache_put(&cache_files_type
, key
, fvec
);
537 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
538 return output_list(c
, fvec
);
541 static int c_files(struct conn
*c
,
544 return files_dirs(c
, vec
, nvec
, trackdb_files
);
547 static int c_dirs(struct conn
*c
,
550 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
553 static int c_allfiles(struct conn
*c
,
556 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
559 static int c_get(struct conn
*c
,
561 int attribute((unused
)) nvec
) {
564 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
565 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
567 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
571 static int c_length(struct conn
*c
,
573 int attribute((unused
)) nvec
) {
574 const char *track
, *v
;
576 if(!(track
= trackdb_resolve(vec
[0]))) {
577 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
580 if((v
= trackdb_get(track
, "_length")))
581 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
583 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
587 static int c_set(struct conn
*c
,
589 int attribute((unused
)) nvec
) {
590 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
591 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
593 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
597 static int c_prefs(struct conn
*c
,
599 int attribute((unused
)) nvec
) {
602 k
= trackdb_get_all(vec
[0]);
603 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
604 for(; k
; k
= k
->next
)
605 if(k
->name
[0] != '_') /* omit internal values */
606 sink_printf(ev_writer_sink(c
->w
),
607 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
608 sink_writes(ev_writer_sink(c
->w
), ".\n");
612 static int c_exists(struct conn
*c
,
614 int attribute((unused
)) nvec
) {
615 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
619 static void search_parse_error(const char *msg
, void *u
) {
620 *(const char **)u
= msg
;
623 static int c_search(struct conn
*c
,
625 int attribute((unused
)) nvec
) {
626 char **terms
, **results
;
627 int nterms
, nresults
, n
;
628 const char *e
= "unknown error";
630 /* This is a bit of a bodge. Initially it's there to make the eclient
631 * interface a bit more convenient to add searching to, but it has the more
632 * compelling advantage that if everything uses it, then interpretation of
633 * user-supplied search strings will be the same everywhere. */
634 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
635 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
637 results
= trackdb_search(terms
, nterms
, &nresults
);
638 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
639 for(n
= 0; n
< nresults
; ++n
)
640 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
641 sink_writes(ev_writer_sink(c
->w
), ".\n");
646 static int c_random_enable(struct conn
*c
,
647 char attribute((unused
)) **vec
,
648 int attribute((unused
)) nvec
) {
649 enable_random(c
->who
, c
->ev
);
650 /* Enable implicitly unpauses if there is nothing playing */
651 if(paused
&& !playing
) resume_playing(c
->who
);
652 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
653 return 1; /* completed */
656 static int c_random_disable(struct conn
*c
,
657 char attribute((unused
)) **vec
,
658 int attribute((unused
)) nvec
) {
659 disable_random(c
->who
);
660 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
661 return 1; /* completed */
664 static int c_random_enabled(struct conn
*c
,
665 char attribute((unused
)) **vec
,
666 int attribute((unused
)) nvec
) {
667 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
668 return 1; /* completed */
671 static void got_stats(char *stats
, void *u
) {
672 struct conn
*const c
= u
;
674 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
675 /* Now we can start processing commands again */
676 ev_reader_enable(c
->r
);
679 static int c_stats(struct conn
*c
,
680 char attribute((unused
)) **vec
,
681 int attribute((unused
)) nvec
) {
682 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
683 return 0; /* not yet complete */
686 static int c_volume(struct conn
*c
,
697 l
= r
= atoi(vec
[0]);
708 if(mixer_control(&l
, &r
, set
))
709 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
711 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
712 if(l
!= volume_left
|| r
!= volume_right
) {
715 snprintf(lb
, sizeof lb
, "%d", l
);
716 snprintf(rb
, sizeof rb
, "%d", r
);
717 eventlog("volume", lb
, rb
, (char *)0);
723 /* we are logging, and some data is available to read */
724 static int logging_reader_callback(ev_source
*ev
,
733 /* don't log to this conn any more */
734 eventlog_remove(c
->lo
);
735 /* terminate the log output */
736 sink_writes(ev_writer_sink(c
->w
), ".\n");
737 /* restore the reader callback */
738 c
->reader
= reader_callback
;
739 /* ...and exit via it */
740 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
743 static void logclient(const char *msg
, void *user
) {
744 struct conn
*c
= user
;
746 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
747 (uintmax_t)time(0), msg
);
750 static int c_log(struct conn
*c
,
751 char attribute((unused
)) **vec
,
752 int attribute((unused
)) nvec
) {
755 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
756 /* pump out initial state */
758 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
760 playing_is_enabled() ?
"enable_play" : "disable_play");
761 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
763 random_is_enabled() ?
"enable_random" : "disable_random");
764 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
766 paused ?
"pause" : "resume");
768 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
771 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
772 (uintmax_t)now
, volume_left
, volume_right
);
773 c
->lo
= xmalloc(sizeof *c
->lo
);
774 c
->lo
->fn
= logclient
;
777 c
->reader
= logging_reader_callback
;
781 static void post_move_cleanup(void) {
782 struct queue_entry
*q
;
784 /* If we have caused any random tracks to not be at the end then we make them
785 * no longer be random. */
786 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
787 if(q
->state
== playing_random
&& q
->next
!= &qhead
)
788 q
->state
= playing_unplayed
;
789 /* That might mean we need to add a new random track. */
794 static int c_move(struct conn
*c
,
796 int attribute((unused
)) nvec
) {
797 struct queue_entry
*q
;
800 if(config
->restrictions
& RESTRICT_MOVE
) {
802 sink_writes(ev_writer_sink(c
->w
),
803 "550 only trusted users can move tracks\n");
807 if(!(q
= queue_find(vec
[0]))) {
808 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
811 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
813 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
814 /* If we've moved to the head of the queue then prepare the track. */
820 static int c_moveafter(struct conn
*c
,
822 int attribute((unused
)) nvec
) {
823 struct queue_entry
*q
, **qs
;
826 if(config
->restrictions
& RESTRICT_MOVE
) {
828 sink_writes(ev_writer_sink(c
->w
),
829 "550 only trusted users can move tracks\n");
834 if(!(q
= queue_find(vec
[0]))) {
835 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
842 qs
= xcalloc(nvec
, sizeof *qs
);
843 for(n
= 0; n
< nvec
; ++n
)
844 if(!(qs
[n
] = queue_find(vec
[n
]))) {
845 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
848 queue_moveafter(q
, nvec
, qs
, c
->who
);
850 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
851 /* If we've moved to the head of the queue then prepare the track. */
857 static int c_part(struct conn
*c
,
859 int attribute((unused
)) nvec
) {
860 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
861 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
865 static int c_resolve(struct conn
*c
,
867 int attribute((unused
)) nvec
) {
870 if(!(track
= trackdb_resolve(vec
[0]))) {
871 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
874 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
878 static int c_tags(struct conn
*c
,
879 char attribute((unused
)) **vec
,
880 int attribute((unused
)) nvec
) {
881 char **tags
= trackdb_alltags();
883 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
885 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
886 **tags
== '.' ?
"." : "", *tags
);
889 sink_writes(ev_writer_sink(c
->w
), ".\n");
890 return 1; /* completed */
894 static int c_set_global(struct conn
*c
,
896 int attribute((unused
)) nvec
) {
897 trackdb_set_global(vec
[0], vec
[1], c
->who
);
898 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
902 static int c_get_global(struct conn
*c
,
904 int attribute((unused
)) nvec
) {
905 const char *s
= trackdb_get_global(vec
[0]);
908 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
910 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
914 static int c_nop(struct conn
*c
,
915 char attribute((unused
)) **vec
,
916 int attribute((unused
)) nvec
) {
917 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
921 static int c_new(struct conn
*c
,
924 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
926 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
928 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
929 **tracks
== '.' ?
"." : "", *tracks
);
932 sink_writes(ev_writer_sink(c
->w
), ".\n");
933 return 1; /* completed */
937 static int c_rtp_address(struct conn
*c
,
938 char attribute((unused
)) **vec
,
939 int attribute((unused
)) nvec
) {
940 if(config
->speaker_backend
== BACKEND_NETWORK
) {
941 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
942 quoteutf8(config
->broadcast
.s
[0]),
943 quoteutf8(config
->broadcast
.s
[1]));
945 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
949 #define C_AUTH 0001 /* must be authenticated */
950 #define C_TRUSTED 0002 /* must be trusted user */
952 static const struct command
{
954 int minargs
, maxargs
;
955 int (*fn
)(struct conn
*, char **, int);
958 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
959 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
960 { "dirs", 0, 2, c_dirs
, C_AUTH
},
961 { "disable", 0, 1, c_disable
, C_AUTH
},
962 { "enable", 0, 0, c_enable
, C_AUTH
},
963 { "enabled", 0, 0, c_enabled
, C_AUTH
},
964 { "exists", 1, 1, c_exists
, C_AUTH
},
965 { "files", 0, 2, c_files
, C_AUTH
},
966 { "get", 2, 2, c_get
, C_AUTH
},
967 { "get-global", 1, 1, c_get_global
, C_AUTH
},
968 { "length", 1, 1, c_length
, C_AUTH
},
969 { "log", 0, 0, c_log
, C_AUTH
},
970 { "move", 2, 2, c_move
, C_AUTH
},
971 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
972 { "new", 0, 1, c_new
, C_AUTH
},
973 { "nop", 0, 0, c_nop
, C_AUTH
},
974 { "part", 3, 3, c_part
, C_AUTH
},
975 { "pause", 0, 0, c_pause
, C_AUTH
},
976 { "play", 1, 1, c_play
, C_AUTH
},
977 { "playing", 0, 0, c_playing
, C_AUTH
},
978 { "prefs", 1, 1, c_prefs
, C_AUTH
},
979 { "queue", 0, 0, c_queue
, C_AUTH
},
980 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
981 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
982 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
983 { "recent", 0, 0, c_recent
, C_AUTH
},
984 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
985 { "remove", 1, 1, c_remove
, C_AUTH
},
986 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
987 { "resolve", 1, 1, c_resolve
, C_AUTH
},
988 { "resume", 0, 0, c_resume
, C_AUTH
},
989 { "rtp-address", 0, 0, c_rtp_address
, C_AUTH
},
990 { "scratch", 0, 1, c_scratch
, C_AUTH
},
991 { "search", 1, 1, c_search
, C_AUTH
},
992 { "set", 3, 3, c_set
, C_AUTH
, },
993 { "set-global", 2, 2, c_set_global
, C_AUTH
},
994 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
995 { "stats", 0, 0, c_stats
, C_AUTH
},
996 { "tags", 0, 0, c_tags
, C_AUTH
},
997 { "unset", 2, 2, c_set
, C_AUTH
},
998 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
999 { "user", 2, 2, c_user
, 0 },
1000 { "version", 0, 0, c_version
, C_AUTH
},
1001 { "volume", 0, 2, c_volume
, C_AUTH
}
1004 static void command_error(const char *msg
, void *u
) {
1007 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1010 /* process a command. Return 1 if complete, 0 if incomplete. */
1011 static int command(struct conn
*c
, char *line
) {
1015 D(("server command %s", line
));
1016 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1017 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1021 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1024 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1025 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1027 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
1028 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
1031 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
1032 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1037 if(nvec
< commands
[n
].minargs
) {
1038 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1041 if(nvec
> commands
[n
].maxargs
) {
1042 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1045 return commands
[n
].fn(c
, vec
, nvec
);
1047 return 1; /* completed */
1050 /* redirect to the right reader callback for our current state */
1051 static int redirect_reader_callback(ev_source
*ev
,
1060 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
1063 /* the main command reader */
1064 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1066 int attribute((unused
)) fd
,
1075 D(("server reader_callback"));
1076 while((eol
= memchr(ptr
, '\n', bytes
))) {
1078 ev_reader_consume(reader
, eol
- (char *)ptr
);
1079 complete
= command(c
, ptr
);
1080 bytes
-= (eol
- (char *)ptr
);
1083 /* the command had better have set a new reader callback */
1085 /* there are further bytes to read, or we are at eof; arrange for the
1086 * command's reader callback to handle them */
1087 return ev_reader_incomplete(reader
);
1088 /* nothing's going on right now */
1091 /* command completed, we can go around and handle the next one */
1095 error(0, "S%x unterminated line", c
->tag
);
1097 return ev_writer_close(c
->w
);
1102 static int listen_callback(ev_source
*ev
,
1104 const struct sockaddr
attribute((unused
)) *remote
,
1105 socklen_t
attribute((unused
)) rlen
,
1107 const struct listener
*l
= u
;
1108 struct conn
*c
= xmalloc(sizeof *c
);
1109 static unsigned tags
;
1111 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1116 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1118 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1121 c
->reader
= reader_callback
;
1123 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1124 if(!strcmp(config
->authorization_algorithm
, "sha1")
1125 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1126 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1127 hex(c
->nonce
, sizeof c
->nonce
));
1129 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1130 config
->authorization_algorithm
,
1131 hex(c
->nonce
, sizeof c
->nonce
));
1136 int server_start(ev_source
*ev
, int pf
,
1137 size_t socklen
, const struct sockaddr
*sa
,
1140 struct listener
*l
= xmalloc(sizeof *l
);
1141 static const int one
= 1;
1143 D(("server_init socket %s", name
));
1144 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1145 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1146 if(bind(fd
, sa
, socklen
) < 0) {
1147 error(errno
, "error binding to %s", name
);
1155 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1160 int server_stop(ev_source
*ev
, int fd
) {
1162 return ev_listen_cancel(ev
, fd
);