2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006 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 xclose(fd
); /* reader is done too, close */
121 D(("server writer_error shutdown %d SHUT_WR", fd
));
122 xshutdown(fd
, SHUT_WR
); /* reader is not done yet */
125 if(errno_value
!= EPIPE
)
126 error(errno_value
, "S%x write error on socket", c
->tag
);
128 ev_reader_cancel(c
->r
);
134 static int reader_error(ev_source
attribute((unused
)) *ev
,
140 D(("server reader_error %d %d", fd
, errno_value
));
141 error(errno
, "S%x read error on socket", c
->tag
);
142 ev_writer_cancel(c
->w
);
147 /* return true if we are talking to a trusted user */
148 static int trusted(struct conn
*c
) {
151 for(n
= 0; (n
< config
->trust
.n
152 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
154 return n
< config
->trust
.n
;
157 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
159 disable_playing(c
->who
);
160 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
161 disable_playing(c
->who
);
163 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
164 return 1; /* completed */
166 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
167 return 1; /* completed */
170 static int c_enable(struct conn
*c
,
171 char attribute((unused
)) **vec
,
172 int attribute((unused
)) nvec
) {
173 enable_playing(c
->who
, c
->ev
);
174 /* Enable implicitly unpauses if there is nothing playing */
175 if(paused
&& !playing
) resume_playing(c
->who
);
176 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
177 return 1; /* completed */
180 static int c_enabled(struct conn
*c
,
181 char attribute((unused
)) **vec
,
182 int attribute((unused
)) nvec
) {
183 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
184 return 1; /* completed */
187 static int c_play(struct conn
*c
, char **vec
,
188 int attribute((unused
)) nvec
) {
190 struct queue_entry
*q
;
192 if(!trackdb_exists(vec
[0])) {
193 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
196 if(!(track
= trackdb_resolve(vec
[0]))) {
197 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
200 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
202 /* If we added the first track, and something is playing, then prepare the
203 * new track. If nothing is playing then we don't bother as it wouldn't gain
205 if(q
== qhead
.next
&& playing
)
207 sink_writes(ev_writer_sink(c
->w
), "250 queued\n");
208 /* If the queue was empty but we are for some reason paused then
210 if(!playing
) resume_playing(0);
212 return 1; /* completed */
215 static int c_remove(struct conn
*c
, char **vec
,
216 int attribute((unused
)) nvec
) {
217 struct queue_entry
*q
;
219 if(!(q
= queue_find(vec
[0]))) {
220 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
223 if(config
->restrictions
& RESTRICT_REMOVE
) {
224 /* can only remove tracks that you submitted */
225 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
226 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
230 queue_remove(q
, c
->who
);
231 /* De-prepare the track. */
233 /* If we removed the random track then add another one. */
234 if(q
->state
== playing_random
)
236 /* Prepare whatever the next head track is. */
237 if(qhead
.next
!= &qhead
)
238 prepare(c
->ev
, qhead
.next
);
240 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
241 return 1; /* completed */
244 static int c_scratch(struct conn
*c
,
248 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
249 return 1; /* completed */
251 if(config
->restrictions
& RESTRICT_SCRATCH
) {
252 /* can only scratch tracks you submitted and randomly selected ones */
253 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
254 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
258 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
259 /* If you scratch an unpaused track then it is automatically unpaused */
261 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
262 return 1; /* completed */
265 static int c_pause(struct conn
*c
,
266 char attribute((unused
)) **vec
,
267 int attribute((unused
)) nvec
) {
269 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
270 return 1; /* completed */
273 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
274 return 1; /* completed */
276 if(pause_playing(c
->who
) < 0)
277 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
279 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
283 static int c_resume(struct conn
*c
,
284 char attribute((unused
)) **vec
,
285 int attribute((unused
)) nvec
) {
287 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
288 return 1; /* completed */
290 resume_playing(c
->who
);
291 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
295 static int c_shutdown(struct conn
*c
,
296 char attribute((unused
)) **vec
,
297 int attribute((unused
)) nvec
) {
298 info("S%x shut down by %s", c
->tag
, c
->who
);
299 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
300 ev_writer_flush(c
->w
);
304 static int c_reconfigure(struct conn
*c
,
305 char attribute((unused
)) **vec
,
306 int attribute((unused
)) nvec
) {
307 info("S%x reconfigure by %s", c
->tag
, c
->who
);
308 if(reconfigure(c
->ev
, 1))
309 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
311 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
312 return 1; /* completed */
315 static int c_rescan(struct conn
*c
,
316 char attribute((unused
)) **vec
,
317 int attribute((unused
)) nvec
) {
318 info("S%x rescan by %s", c
->tag
, c
->who
);
319 trackdb_rescan(c
->ev
);
320 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
321 return 1; /* completed */
324 static int c_version(struct conn
*c
,
325 char attribute((unused
)) **vec
,
326 int attribute((unused
)) nvec
) {
327 /* VERSION had better only use the basic character set */
328 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_version_string
);
329 return 1; /* completed */
332 static int c_playing(struct conn
*c
,
333 char attribute((unused
)) **vec
,
334 int attribute((unused
)) nvec
) {
336 queue_fix_sofar(playing
);
337 playing
->expected
= 0;
338 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
340 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
341 return 1; /* completed */
344 static int c_become(struct conn
*c
,
346 int attribute((unused
)) nvec
) {
348 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
352 static int c_user(struct conn
*c
,
354 int attribute((unused
)) nvec
) {
359 struct sockaddr_in in
;
360 struct sockaddr_in6 in6
;
366 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
369 /* get connection data */
371 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
372 error(errno
, "S%x error calling getpeername", c
->tag
);
373 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
376 if(c
->l
->pf
!= PF_UNIX
) {
377 if((n
= getnameinfo(&u
.sa
, l
,
378 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
379 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
380 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
384 strcpy(host
, "local");
386 for(n
= 0; n
< config
->allow
.n
387 && strcmp(config
->allow
.s
[n
].s
[0], vec
[0]); ++n
)
389 /* if it's a real user check whether the response is right */
390 if(n
>= config
->allow
.n
) {
391 info("S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
392 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
395 res
= authhash(c
->nonce
, sizeof c
->nonce
, config
->allow
.s
[n
].s
[1],
396 config
->authorization_algorithm
);
397 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
399 /* currently we only bother logging remote connections */
400 if(c
->l
->pf
!= PF_UNIX
)
401 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
402 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
405 /* oops, response was wrong */
406 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
407 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
411 static int c_recent(struct conn
*c
,
412 char attribute((unused
)) **vec
,
413 int attribute((unused
)) nvec
) {
414 const struct queue_entry
*q
;
416 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
417 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
418 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
419 sink_writes(ev_writer_sink(c
->w
), ".\n");
420 return 1; /* completed */
423 static int c_queue(struct conn
*c
,
424 char attribute((unused
)) **vec
,
425 int attribute((unused
)) nvec
) {
426 struct queue_entry
*q
;
431 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
432 if(playing_is_enabled() && !paused
) {
434 queue_fix_sofar(playing
);
435 if((l
= trackdb_get(playing
->track
, "_length"))
436 && (length
= atol(l
))) {
438 when
+= length
- playing
->sofar
+ config
->gap
;
441 /* Nothing is playing but playing is enabled, so whatever is
442 * first in the queue can be expected to start immediately. */
445 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
446 /* fill in estimated start time */
448 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
449 /* update for next track */
451 if((l
= trackdb_get(q
->track
, "_length"))
452 && (length
= atol(l
)))
453 when
+= length
+ config
->gap
;
458 sink_writes(ev_writer_sink(c
->w
), ".\n");
459 return 1; /* completed */
462 static int output_list(struct conn
*c
, char **vec
) {
464 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
465 sink_writes(ev_writer_sink(c
->w
), ".\n");
469 static int files_dirs(struct conn
*c
,
472 enum trackdb_listable what
) {
473 const char *dir
, *re
, *errstr
;
479 case 0: dir
= 0; re
= 0; break;
480 case 1: dir
= vec
[0]; re
= 0; break;
481 case 2: dir
= vec
[0]; re
= vec
[1]; break;
484 /* A bit of a bodge to make sure the args don't trample on cache keys */
485 if(dir
&& strchr(dir
, '\n')) {
486 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
489 if(re
&& strchr(re
, '\n')) {
490 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
493 /* We bother eliminating "" because the web interface is relatively
494 * likely to send it */
496 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
497 fvec
= (char **)cache_get(&cache_files_type
, key
);
499 /* Got a cache hit, don't store the answer in the cache */
502 rec
= 0; /* quieten compiler */
504 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
506 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
507 &errstr
, &erroffset
, 0))) {
508 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
512 /* It only counts as a miss if the regexp was valid. */
513 ++cache_files_misses
;
516 /* No regexp, don't bother caching the result */
522 /* No cache hit (either because a miss, or because we did not look) so do
525 fvec
= trackdb_list(dir
, 0, what
, rec
);
527 fvec
= trackdb_list(0, 0, what
, rec
);
530 /* Put the answer in the cache */
531 cache_put(&cache_files_type
, key
, fvec
);
532 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
533 return output_list(c
, fvec
);
536 static int c_files(struct conn
*c
,
539 return files_dirs(c
, vec
, nvec
, trackdb_files
);
542 static int c_dirs(struct conn
*c
,
545 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
548 static int c_allfiles(struct conn
*c
,
551 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
554 static int c_get(struct conn
*c
,
556 int attribute((unused
)) nvec
) {
559 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
560 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
562 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
566 static int c_length(struct conn
*c
,
568 int attribute((unused
)) nvec
) {
569 const char *track
, *v
;
571 if(!(track
= trackdb_resolve(vec
[0]))) {
572 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
575 if((v
= trackdb_get(track
, "_length")))
576 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
578 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
582 static int c_set(struct conn
*c
,
584 int attribute((unused
)) nvec
) {
585 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
586 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
588 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
592 static int c_prefs(struct conn
*c
,
594 int attribute((unused
)) nvec
) {
597 k
= trackdb_get_all(vec
[0]);
598 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
599 for(; k
; k
= k
->next
)
600 if(k
->name
[0] != '_') /* omit internal values */
601 sink_printf(ev_writer_sink(c
->w
),
602 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
603 sink_writes(ev_writer_sink(c
->w
), ".\n");
607 static int c_exists(struct conn
*c
,
609 int attribute((unused
)) nvec
) {
610 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
614 static void search_parse_error(const char *msg
, void *u
) {
615 *(const char **)u
= msg
;
618 static int c_search(struct conn
*c
,
620 int attribute((unused
)) nvec
) {
621 char **terms
, **results
;
622 int nterms
, nresults
, n
;
623 const char *e
= "unknown error";
625 /* This is a bit of a bodge. Initially it's there to make the eclient
626 * interface a bit more convenient to add searching to, but it has the more
627 * compelling advantage that if everything uses it, then interpretation of
628 * user-supplied search strings will be the same everywhere. */
629 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
630 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
632 results
= trackdb_search(terms
, nterms
, &nresults
);
633 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
634 for(n
= 0; n
< nresults
; ++n
)
635 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
636 sink_writes(ev_writer_sink(c
->w
), ".\n");
641 static int c_random_enable(struct conn
*c
,
642 char attribute((unused
)) **vec
,
643 int attribute((unused
)) nvec
) {
644 enable_random(c
->who
, c
->ev
);
645 /* Enable implicitly unpauses if there is nothing playing */
646 if(paused
&& !playing
) resume_playing(c
->who
);
647 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
648 return 1; /* completed */
651 static int c_random_disable(struct conn
*c
,
652 char attribute((unused
)) **vec
,
653 int attribute((unused
)) nvec
) {
654 disable_random(c
->who
);
655 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
656 return 1; /* completed */
659 static int c_random_enabled(struct conn
*c
,
660 char attribute((unused
)) **vec
,
661 int attribute((unused
)) nvec
) {
662 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
663 return 1; /* completed */
666 static int c_stats(struct conn
*c
,
667 char attribute((unused
)) **vec
,
668 int attribute((unused
)) nvec
) {
672 v
= trackdb_stats(&nv
);
673 sink_printf(ev_writer_sink(c
->w
), "253 stats\n");
674 for(n
= 0; n
< nv
; ++n
) {
676 sink_writes(ev_writer_sink(c
->w
), ".");
677 sink_printf(ev_writer_sink(c
->w
), "%s\n", v
[n
]);
679 sink_writes(ev_writer_sink(c
->w
), ".\n");
683 static int c_volume(struct conn
*c
,
694 l
= r
= atoi(vec
[0]);
705 if(mixer_control(&l
, &r
, set
))
706 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
708 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
709 if(l
!= volume_left
|| r
!= volume_right
) {
712 snprintf(lb
, sizeof lb
, "%d", l
);
713 snprintf(rb
, sizeof rb
, "%d", r
);
714 eventlog("volume", lb
, rb
, (char *)0);
720 /* we are logging, and some data is available to read */
721 static int logging_reader_callback(ev_source
*ev
,
730 /* don't log to this conn any more */
731 eventlog_remove(c
->lo
);
732 /* terminate the log output */
733 sink_writes(ev_writer_sink(c
->w
), ".\n");
734 /* restore the reader callback */
735 c
->reader
= reader_callback
;
736 /* ...and exit via it */
737 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
740 static void logclient(const char *msg
, void *user
) {
741 struct conn
*c
= user
;
743 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
744 (uintmax_t)time(0), msg
);
747 static int c_log(struct conn
*c
,
748 char attribute((unused
)) **vec
,
749 int attribute((unused
)) nvec
) {
752 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
753 /* pump out initial state */
755 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
757 playing_is_enabled() ?
"enable_play" : "disable_play");
758 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
760 random_is_enabled() ?
"enable_random" : "disable_random");
761 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
763 paused ?
"pause" : "resume");
765 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
768 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
769 (uintmax_t)now
, volume_left
, volume_right
);
770 c
->lo
= xmalloc(sizeof *c
->lo
);
771 c
->lo
->fn
= logclient
;
774 c
->reader
= logging_reader_callback
;
778 static void post_move_cleanup(void) {
779 struct queue_entry
*q
;
781 /* If we have caused the random track to not be at the end then we make it no
782 * longer be random. */
783 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
784 if(q
->state
== playing_random
&& q
->next
!= &qhead
)
785 q
->state
= playing_unplayed
;
786 /* That might mean we need to add a new random track. */
791 static int c_move(struct conn
*c
,
793 int attribute((unused
)) nvec
) {
794 struct queue_entry
*q
;
797 if(config
->restrictions
& RESTRICT_MOVE
) {
799 sink_writes(ev_writer_sink(c
->w
),
800 "550 only trusted users can move tracks\n");
804 if(!(q
= queue_find(vec
[0]))) {
805 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
808 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
810 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
811 /* If we've moved to the head of the queue then prepare the track. */
817 static int c_moveafter(struct conn
*c
,
819 int attribute((unused
)) nvec
) {
820 struct queue_entry
*q
, **qs
;
823 if(config
->restrictions
& RESTRICT_MOVE
) {
825 sink_writes(ev_writer_sink(c
->w
),
826 "550 only trusted users can move tracks\n");
831 if(!(q
= queue_find(vec
[0]))) {
832 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
839 qs
= xcalloc(nvec
, sizeof *qs
);
840 for(n
= 0; n
< nvec
; ++n
)
841 if(!(qs
[n
] = queue_find(vec
[n
]))) {
842 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
845 queue_moveafter(q
, nvec
, qs
, c
->who
);
847 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
848 /* If we've moved to the head of the queue then prepare the track. */
854 static int c_part(struct conn
*c
,
856 int attribute((unused
)) nvec
) {
857 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
858 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
862 static int c_resolve(struct conn
*c
,
864 int attribute((unused
)) nvec
) {
867 if(!(track
= trackdb_resolve(vec
[0]))) {
868 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
871 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
875 static int c_tags(struct conn
*c
,
876 char attribute((unused
)) **vec
,
877 int attribute((unused
)) nvec
) {
878 char **tags
= trackdb_alltags();
880 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
882 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
883 **tags
== '.' ?
"." : "", *tags
);
886 sink_writes(ev_writer_sink(c
->w
), ".\n");
887 return 1; /* completed */
891 static int c_set_global(struct conn
*c
,
893 int attribute((unused
)) nvec
) {
894 trackdb_set_global(vec
[0], vec
[1], c
->who
);
895 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
899 static int c_get_global(struct conn
*c
,
901 int attribute((unused
)) nvec
) {
902 const char *s
= trackdb_get_global(vec
[0]);
905 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
907 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
911 static int c_nop(struct conn
*c
,
912 char attribute((unused
)) **vec
,
913 int attribute((unused
)) nvec
) {
914 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
918 static int c_new(struct conn
*c
,
921 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
923 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
925 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
926 **tracks
== '.' ?
"." : "", *tracks
);
929 sink_writes(ev_writer_sink(c
->w
), ".\n");
930 return 1; /* completed */
934 static int c_rtp_address(struct conn
*c
,
935 char attribute((unused
)) **vec
,
936 int attribute((unused
)) nvec
) {
937 if(config
->speaker_backend
== BACKEND_NETWORK
) {
938 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
939 quoteutf8(config
->broadcast
.s
[0]),
940 quoteutf8(config
->broadcast
.s
[1]));
942 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
946 #define C_AUTH 0001 /* must be authenticated */
947 #define C_TRUSTED 0002 /* must be trusted user */
949 static const struct command
{
951 int minargs
, maxargs
;
952 int (*fn
)(struct conn
*, char **, int);
955 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
956 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
957 { "dirs", 0, 2, c_dirs
, C_AUTH
},
958 { "disable", 0, 1, c_disable
, C_AUTH
},
959 { "enable", 0, 0, c_enable
, C_AUTH
},
960 { "enabled", 0, 0, c_enabled
, C_AUTH
},
961 { "exists", 1, 1, c_exists
, C_AUTH
},
962 { "files", 0, 2, c_files
, C_AUTH
},
963 { "get", 2, 2, c_get
, C_AUTH
},
964 { "get-global", 1, 1, c_get_global
, C_AUTH
},
965 { "length", 1, 1, c_length
, C_AUTH
},
966 { "log", 0, 0, c_log
, C_AUTH
},
967 { "move", 2, 2, c_move
, C_AUTH
},
968 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
969 { "new", 0, 1, c_new
, C_AUTH
},
970 { "nop", 0, 0, c_nop
, C_AUTH
},
971 { "part", 3, 3, c_part
, C_AUTH
},
972 { "pause", 0, 0, c_pause
, C_AUTH
},
973 { "play", 1, 1, c_play
, C_AUTH
},
974 { "playing", 0, 0, c_playing
, C_AUTH
},
975 { "prefs", 1, 1, c_prefs
, C_AUTH
},
976 { "queue", 0, 0, c_queue
, C_AUTH
},
977 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
978 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
979 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
980 { "recent", 0, 0, c_recent
, C_AUTH
},
981 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
982 { "remove", 1, 1, c_remove
, C_AUTH
},
983 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
984 { "resolve", 1, 1, c_resolve
, C_AUTH
},
985 { "resume", 0, 0, c_resume
, C_AUTH
},
986 { "rtp-address", 0, 0, c_rtp_address
, C_AUTH
},
987 { "scratch", 0, 1, c_scratch
, C_AUTH
},
988 { "search", 1, 1, c_search
, C_AUTH
},
989 { "set", 3, 3, c_set
, C_AUTH
, },
990 { "set-global", 2, 2, c_set_global
, C_AUTH
},
991 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
992 { "stats", 0, 0, c_stats
, C_AUTH
},
993 { "tags", 0, 0, c_tags
, C_AUTH
},
994 { "unset", 2, 2, c_set
, C_AUTH
},
995 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
996 { "user", 2, 2, c_user
, 0 },
997 { "version", 0, 0, c_version
, C_AUTH
},
998 { "volume", 0, 2, c_volume
, C_AUTH
}
1001 static void command_error(const char *msg
, void *u
) {
1004 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1007 /* process a command. Return 1 if complete, 0 if incomplete. */
1008 static int command(struct conn
*c
, char *line
) {
1012 D(("server command %s", line
));
1013 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1014 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1018 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1021 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1022 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1024 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
1025 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
1028 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
1029 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1034 if(nvec
< commands
[n
].minargs
) {
1035 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1038 if(nvec
> commands
[n
].maxargs
) {
1039 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1042 return commands
[n
].fn(c
, vec
, nvec
);
1044 return 1; /* completed */
1047 /* redirect to the right reader callback for our current state */
1048 static int redirect_reader_callback(ev_source
*ev
,
1057 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
1060 /* the main command reader */
1061 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1063 int attribute((unused
)) fd
,
1072 D(("server reader_callback"));
1073 while((eol
= memchr(ptr
, '\n', bytes
))) {
1075 ev_reader_consume(reader
, eol
- (char *)ptr
);
1076 complete
= command(c
, ptr
);
1077 bytes
-= (eol
- (char *)ptr
);
1080 /* the command had better have set a new reader callback */
1082 /* there are further bytes to read, or we are at eof; arrange for the
1083 * command's reader callback to handle them */
1084 return ev_reader_incomplete(reader
);
1085 /* nothing's going on right now */
1088 /* command completed, we can go around and handle the next one */
1092 error(0, "S%x unterminated line", c
->tag
);
1094 return ev_writer_close(c
->w
);
1099 static int listen_callback(ev_source
*ev
,
1101 const struct sockaddr
attribute((unused
)) *remote
,
1102 socklen_t
attribute((unused
)) rlen
,
1104 const struct listener
*l
= u
;
1105 struct conn
*c
= xmalloc(sizeof *c
);
1106 static unsigned tags
;
1108 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1113 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
);
1114 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
);
1116 c
->reader
= reader_callback
;
1118 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1119 if(!strcmp(config
->authorization_algorithm
, "sha1")
1120 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1121 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1122 hex(c
->nonce
, sizeof c
->nonce
));
1124 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1125 config
->authorization_algorithm
,
1126 hex(c
->nonce
, sizeof c
->nonce
));
1131 int server_start(ev_source
*ev
, int pf
,
1132 size_t socklen
, const struct sockaddr
*sa
,
1135 struct listener
*l
= xmalloc(sizeof *l
);
1136 static const int one
= 1;
1138 D(("server_init socket %s", name
));
1139 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1140 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1141 if(bind(fd
, sa
, socklen
) < 0) {
1142 error(errno
, "error binding to %s", name
);
1150 if(ev_listen(ev
, fd
, listen_callback
, l
)) exit(EXIT_FAILURE
);
1154 int server_stop(ev_source
*ev
, int fd
) {
1156 return ev_listen_cancel(ev
, fd
);