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>
51 #include "configuration.h"
61 #include "trackname.h"
67 # define NONCE_SIZE 16
70 int volume_left
, volume_right
; /* last known volume */
72 /** @brief Accept all well-formed login attempts
90 unsigned char nonce
[NONCE_SIZE
];
91 ev_reader_callback
*reader
;
92 struct eventlog_output
*lo
;
93 const struct listener
*l
;
96 static int reader_callback(ev_source
*ev
,
104 static const char *noyes
[] = { "no", "yes" };
106 static int writer_error(ev_source
attribute((unused
)) *ev
,
112 D(("server writer_error %d %d", fd
, errno_value
));
113 if(errno_value
== 0) {
117 D(("server writer_error closes %d", fd
));
118 xclose(fd
); /* reader is done too, close */
120 D(("server writer_error shutdown %d SHUT_WR", fd
));
121 xshutdown(fd
, SHUT_WR
); /* reader is not done yet */
124 if(errno_value
!= EPIPE
)
125 error(errno_value
, "S%x write error on socket", c
->tag
);
127 ev_reader_cancel(c
->r
);
133 static int reader_error(ev_source
attribute((unused
)) *ev
,
139 D(("server reader_error %d %d", fd
, errno_value
));
140 error(errno
, "S%x read error on socket", c
->tag
);
141 ev_writer_cancel(c
->w
);
146 /* return true if we are talking to a trusted user */
147 static int trusted(struct conn
*c
) {
150 for(n
= 0; (n
< config
->trust
.n
151 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
153 return n
< config
->trust
.n
;
156 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
158 disable_playing(c
->who
);
159 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
160 disable_playing(c
->who
);
162 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
163 return 1; /* completed */
165 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
166 return 1; /* completed */
169 static int c_enable(struct conn
*c
,
170 char attribute((unused
)) **vec
,
171 int attribute((unused
)) nvec
) {
172 enable_playing(c
->who
, c
->ev
);
173 /* Enable implicitly unpauses if there is nothing playing */
174 if(paused
&& !playing
) resume_playing(c
->who
);
175 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
176 return 1; /* completed */
179 static int c_enabled(struct conn
*c
,
180 char attribute((unused
)) **vec
,
181 int attribute((unused
)) nvec
) {
182 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
183 return 1; /* completed */
186 static int c_play(struct conn
*c
, char **vec
,
187 int attribute((unused
)) nvec
) {
189 struct queue_entry
*q
;
191 if(!trackdb_exists(vec
[0])) {
192 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
195 if(!(track
= trackdb_resolve(vec
[0]))) {
196 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
199 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
201 /* If we added the first track, and something is playing, then prepare the
202 * new track. If nothing is playing then we don't bother as it wouldn't gain
204 if(q
== qhead
.next
&& playing
)
206 sink_writes(ev_writer_sink(c
->w
), "250 queued\n");
207 /* If the queue was empty but we are for some reason paused then
209 if(!playing
) resume_playing(0);
211 return 1; /* completed */
214 static int c_remove(struct conn
*c
, char **vec
,
215 int attribute((unused
)) nvec
) {
216 struct queue_entry
*q
;
218 if(!(q
= queue_find(vec
[0]))) {
219 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
222 if(config
->restrictions
& RESTRICT_REMOVE
) {
223 /* can only remove tracks that you submitted */
224 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
225 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
229 queue_remove(q
, c
->who
);
230 /* De-prepare the track. */
232 /* If we removed the random track then add another one. */
233 if(q
->state
== playing_random
)
235 /* Prepare whatever the next head track is. */
236 if(qhead
.next
!= &qhead
)
237 prepare(c
->ev
, qhead
.next
);
239 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
240 return 1; /* completed */
243 static int c_scratch(struct conn
*c
,
247 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
248 return 1; /* completed */
250 if(config
->restrictions
& RESTRICT_SCRATCH
) {
251 /* can only scratch tracks you submitted and randomly selected ones */
252 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
253 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
257 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
258 /* If you scratch an unpaused track then it is automatically unpaused */
260 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
261 return 1; /* completed */
264 static int c_pause(struct conn
*c
,
265 char attribute((unused
)) **vec
,
266 int attribute((unused
)) nvec
) {
268 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
269 return 1; /* completed */
272 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
273 return 1; /* completed */
275 if(pause_playing(c
->who
) < 0)
276 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
278 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
282 static int c_resume(struct conn
*c
,
283 char attribute((unused
)) **vec
,
284 int attribute((unused
)) nvec
) {
286 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
287 return 1; /* completed */
289 resume_playing(c
->who
);
290 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
294 static int c_shutdown(struct conn
*c
,
295 char attribute((unused
)) **vec
,
296 int attribute((unused
)) nvec
) {
297 info("S%x shut down by %s", c
->tag
, c
->who
);
298 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
299 ev_writer_flush(c
->w
);
303 static int c_reconfigure(struct conn
*c
,
304 char attribute((unused
)) **vec
,
305 int attribute((unused
)) nvec
) {
306 info("S%x reconfigure by %s", c
->tag
, c
->who
);
307 if(reconfigure(c
->ev
, 1))
308 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
310 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
311 return 1; /* completed */
314 static int c_rescan(struct conn
*c
,
315 char attribute((unused
)) **vec
,
316 int attribute((unused
)) nvec
) {
317 info("S%x rescan by %s", c
->tag
, c
->who
);
318 trackdb_rescan(c
->ev
);
319 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
320 return 1; /* completed */
323 static int c_version(struct conn
*c
,
324 char attribute((unused
)) **vec
,
325 int attribute((unused
)) nvec
) {
326 /* VERSION had better only use the basic character set */
327 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_version_string
);
328 return 1; /* completed */
331 static int c_playing(struct conn
*c
,
332 char attribute((unused
)) **vec
,
333 int attribute((unused
)) nvec
) {
335 queue_fix_sofar(playing
);
336 playing
->expected
= 0;
337 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
339 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
340 return 1; /* completed */
343 static int c_become(struct conn
*c
,
345 int attribute((unused
)) nvec
) {
347 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
351 static int c_user(struct conn
*c
,
353 int attribute((unused
)) nvec
) {
358 struct sockaddr_in in
;
359 struct sockaddr_in6 in6
;
365 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
368 /* get connection data */
370 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
371 error(errno
, "S%x error calling getpeername", c
->tag
);
372 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
375 if(c
->l
->pf
!= PF_UNIX
) {
376 if((n
= getnameinfo(&u
.sa
, l
,
377 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
378 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
379 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
383 strcpy(host
, "local");
385 for(n
= 0; n
< config
->allow
.n
386 && strcmp(config
->allow
.s
[n
].s
[0], vec
[0]); ++n
)
388 /* if it's a real user check whether the response is right */
389 if(n
>= config
->allow
.n
) {
390 info("S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
391 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
394 res
= authhash(c
->nonce
, sizeof c
->nonce
, config
->allow
.s
[n
].s
[1],
395 config
->authorization_algorithm
);
396 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
398 /* currently we only bother logging remote connections */
399 if(c
->l
->pf
!= PF_UNIX
)
400 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
401 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
404 /* oops, response was wrong */
405 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
406 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
410 static int c_recent(struct conn
*c
,
411 char attribute((unused
)) **vec
,
412 int attribute((unused
)) nvec
) {
413 const struct queue_entry
*q
;
415 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
416 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
417 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
418 sink_writes(ev_writer_sink(c
->w
), ".\n");
419 return 1; /* completed */
422 static int c_queue(struct conn
*c
,
423 char attribute((unused
)) **vec
,
424 int attribute((unused
)) nvec
) {
425 struct queue_entry
*q
;
430 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
431 if(playing_is_enabled() && !paused
) {
433 queue_fix_sofar(playing
);
434 if((l
= trackdb_get(playing
->track
, "_length"))
435 && (length
= atol(l
))) {
437 when
+= length
- playing
->sofar
+ config
->gap
;
440 /* Nothing is playing but playing is enabled, so whatever is
441 * first in the queue can be expected to start immediately. */
444 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
445 /* fill in estimated start time */
447 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
448 /* update for next track */
450 if((l
= trackdb_get(q
->track
, "_length"))
451 && (length
= atol(l
)))
452 when
+= length
+ config
->gap
;
457 sink_writes(ev_writer_sink(c
->w
), ".\n");
458 return 1; /* completed */
461 static int output_list(struct conn
*c
, char **vec
) {
463 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
464 sink_writes(ev_writer_sink(c
->w
), ".\n");
468 static int files_dirs(struct conn
*c
,
471 enum trackdb_listable what
) {
472 const char *dir
, *re
, *errstr
;
478 case 0: dir
= 0; re
= 0; break;
479 case 1: dir
= vec
[0]; re
= 0; break;
480 case 2: dir
= vec
[0]; re
= vec
[1]; break;
483 /* A bit of a bodge to make sure the args don't trample on cache keys */
484 if(dir
&& strchr(dir
, '\n')) {
485 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
488 if(re
&& strchr(re
, '\n')) {
489 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
492 /* We bother eliminating "" because the web interface is relatively
493 * likely to send it */
495 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
496 fvec
= (char **)cache_get(&cache_files_type
, key
);
498 /* Got a cache hit, don't store the answer in the cache */
501 rec
= 0; /* quieten compiler */
503 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
505 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
506 &errstr
, &erroffset
, 0))) {
507 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
511 /* It only counts as a miss if the regexp was valid. */
512 ++cache_files_misses
;
515 /* No regexp, don't bother caching the result */
521 /* No cache hit (either because a miss, or because we did not look) so do
524 fvec
= trackdb_list(dir
, 0, what
, rec
);
526 fvec
= trackdb_list(0, 0, what
, rec
);
529 /* Put the answer in the cache */
530 cache_put(&cache_files_type
, key
, fvec
);
531 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
532 return output_list(c
, fvec
);
535 static int c_files(struct conn
*c
,
538 return files_dirs(c
, vec
, nvec
, trackdb_files
);
541 static int c_dirs(struct conn
*c
,
544 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
547 static int c_allfiles(struct conn
*c
,
550 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
553 static int c_get(struct conn
*c
,
555 int attribute((unused
)) nvec
) {
558 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
559 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
561 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
565 static int c_length(struct conn
*c
,
567 int attribute((unused
)) nvec
) {
568 const char *track
, *v
;
570 if(!(track
= trackdb_resolve(vec
[0]))) {
571 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
574 if((v
= trackdb_get(track
, "_length")))
575 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
577 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
581 static int c_set(struct conn
*c
,
583 int attribute((unused
)) nvec
) {
584 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
585 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
587 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
591 static int c_prefs(struct conn
*c
,
593 int attribute((unused
)) nvec
) {
596 k
= trackdb_get_all(vec
[0]);
597 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
598 for(; k
; k
= k
->next
)
599 if(k
->name
[0] != '_') /* omit internal values */
600 sink_printf(ev_writer_sink(c
->w
),
601 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
602 sink_writes(ev_writer_sink(c
->w
), ".\n");
606 static int c_exists(struct conn
*c
,
608 int attribute((unused
)) nvec
) {
609 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
613 static void search_parse_error(const char *msg
, void *u
) {
614 *(const char **)u
= msg
;
617 static int c_search(struct conn
*c
,
619 int attribute((unused
)) nvec
) {
620 char **terms
, **results
;
621 int nterms
, nresults
, n
;
622 const char *e
= "unknown error";
624 /* This is a bit of a bodge. Initially it's there to make the eclient
625 * interface a bit more convenient to add searching to, but it has the more
626 * compelling advantage that if everything uses it, then interpretation of
627 * user-supplied search strings will be the same everywhere. */
628 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
629 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
631 results
= trackdb_search(terms
, nterms
, &nresults
);
632 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
633 for(n
= 0; n
< nresults
; ++n
)
634 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
635 sink_writes(ev_writer_sink(c
->w
), ".\n");
640 static int c_random_enable(struct conn
*c
,
641 char attribute((unused
)) **vec
,
642 int attribute((unused
)) nvec
) {
643 enable_random(c
->who
, c
->ev
);
644 /* Enable implicitly unpauses if there is nothing playing */
645 if(paused
&& !playing
) resume_playing(c
->who
);
646 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
647 return 1; /* completed */
650 static int c_random_disable(struct conn
*c
,
651 char attribute((unused
)) **vec
,
652 int attribute((unused
)) nvec
) {
653 disable_random(c
->who
);
654 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
655 return 1; /* completed */
658 static int c_random_enabled(struct conn
*c
,
659 char attribute((unused
)) **vec
,
660 int attribute((unused
)) nvec
) {
661 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
662 return 1; /* completed */
665 static int c_stats(struct conn
*c
,
666 char attribute((unused
)) **vec
,
667 int attribute((unused
)) nvec
) {
671 v
= trackdb_stats(&nv
);
672 sink_printf(ev_writer_sink(c
->w
), "253 stats\n");
673 for(n
= 0; n
< nv
; ++n
) {
675 sink_writes(ev_writer_sink(c
->w
), ".");
676 sink_printf(ev_writer_sink(c
->w
), "%s\n", v
[n
]);
678 sink_writes(ev_writer_sink(c
->w
), ".\n");
682 static int c_volume(struct conn
*c
,
693 l
= r
= atoi(vec
[0]);
704 if(mixer_control(&l
, &r
, set
))
705 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
707 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
708 if(l
!= volume_left
|| r
!= volume_right
) {
711 snprintf(lb
, sizeof lb
, "%d", l
);
712 snprintf(rb
, sizeof rb
, "%d", r
);
713 eventlog("volume", lb
, rb
, (char *)0);
719 /* we are logging, and some data is available to read */
720 static int logging_reader_callback(ev_source
*ev
,
729 /* don't log to this conn any more */
730 eventlog_remove(c
->lo
);
731 /* terminate the log output */
732 sink_writes(ev_writer_sink(c
->w
), ".\n");
733 /* restore the reader callback */
734 c
->reader
= reader_callback
;
735 /* ...and exit via it */
736 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
739 static void logclient(const char *msg
, void *user
) {
740 struct conn
*c
= user
;
742 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
743 (uintmax_t)time(0), msg
);
746 static int c_log(struct conn
*c
,
747 char attribute((unused
)) **vec
,
748 int attribute((unused
)) nvec
) {
751 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
752 /* pump out initial state */
754 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
756 playing_is_enabled() ?
"enable_play" : "disable_play");
757 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
759 random_is_enabled() ?
"enable_random" : "disable_random");
760 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
762 paused ?
"pause" : "resume");
764 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
767 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
768 (uintmax_t)now
, volume_left
, volume_right
);
769 c
->lo
= xmalloc(sizeof *c
->lo
);
770 c
->lo
->fn
= logclient
;
773 c
->reader
= logging_reader_callback
;
777 static void post_move_cleanup(void) {
778 struct queue_entry
*q
;
780 /* If we have caused the random track to not be at the end then we make it no
781 * longer be random. */
782 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
783 if(q
->state
== playing_random
&& q
->next
!= &qhead
)
784 q
->state
= playing_unplayed
;
785 /* That might mean we need to add a new random track. */
790 static int c_move(struct conn
*c
,
792 int attribute((unused
)) nvec
) {
793 struct queue_entry
*q
;
796 if(config
->restrictions
& RESTRICT_MOVE
) {
798 sink_writes(ev_writer_sink(c
->w
),
799 "550 only trusted users can move tracks\n");
803 if(!(q
= queue_find(vec
[0]))) {
804 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
807 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
809 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
810 /* If we've moved to the head of the queue then prepare the track. */
816 static int c_moveafter(struct conn
*c
,
818 int attribute((unused
)) nvec
) {
819 struct queue_entry
*q
, **qs
;
822 if(config
->restrictions
& RESTRICT_MOVE
) {
824 sink_writes(ev_writer_sink(c
->w
),
825 "550 only trusted users can move tracks\n");
830 if(!(q
= queue_find(vec
[0]))) {
831 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
838 qs
= xcalloc(nvec
, sizeof *qs
);
839 for(n
= 0; n
< nvec
; ++n
)
840 if(!(qs
[n
] = queue_find(vec
[n
]))) {
841 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
844 queue_moveafter(q
, nvec
, qs
, c
->who
);
846 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
847 /* If we've moved to the head of the queue then prepare the track. */
853 static int c_part(struct conn
*c
,
855 int attribute((unused
)) nvec
) {
856 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
857 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
861 static int c_resolve(struct conn
*c
,
863 int attribute((unused
)) nvec
) {
866 if(!(track
= trackdb_resolve(vec
[0]))) {
867 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
870 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
874 static int c_tags(struct conn
*c
,
875 char attribute((unused
)) **vec
,
876 int attribute((unused
)) nvec
) {
877 char **tags
= trackdb_alltags();
879 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
881 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
882 **tags
== '.' ?
"." : "", *tags
);
885 sink_writes(ev_writer_sink(c
->w
), ".\n");
886 return 1; /* completed */
890 static int c_set_global(struct conn
*c
,
892 int attribute((unused
)) nvec
) {
893 trackdb_set_global(vec
[0], vec
[1], c
->who
);
894 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
898 static int c_get_global(struct conn
*c
,
900 int attribute((unused
)) nvec
) {
901 const char *s
= trackdb_get_global(vec
[0]);
904 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
906 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
910 static int c_nop(struct conn
*c
,
911 char attribute((unused
)) **vec
,
912 int attribute((unused
)) nvec
) {
913 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
917 #define C_AUTH 0001 /* must be authenticated */
918 #define C_TRUSTED 0002 /* must be trusted user */
920 static const struct command
{
922 int minargs
, maxargs
;
923 int (*fn
)(struct conn
*, char **, int);
926 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
927 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
928 { "dirs", 0, 2, c_dirs
, C_AUTH
},
929 { "disable", 0, 1, c_disable
, C_AUTH
},
930 { "enable", 0, 0, c_enable
, C_AUTH
},
931 { "enabled", 0, 0, c_enabled
, C_AUTH
},
932 { "exists", 1, 1, c_exists
, C_AUTH
},
933 { "files", 0, 2, c_files
, C_AUTH
},
934 { "get", 2, 2, c_get
, C_AUTH
},
935 { "get-global", 1, 1, c_get_global
, C_AUTH
},
936 { "length", 1, 1, c_length
, C_AUTH
},
937 { "log", 0, 0, c_log
, C_AUTH
},
938 { "move", 2, 2, c_move
, C_AUTH
},
939 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
940 { "nop", 0, 0, c_nop
, C_AUTH
},
941 { "part", 3, 3, c_part
, C_AUTH
},
942 { "pause", 0, 0, c_pause
, C_AUTH
},
943 { "play", 1, 1, c_play
, C_AUTH
},
944 { "playing", 0, 0, c_playing
, C_AUTH
},
945 { "prefs", 1, 1, c_prefs
, C_AUTH
},
946 { "queue", 0, 0, c_queue
, C_AUTH
},
947 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
948 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
949 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
950 { "recent", 0, 0, c_recent
, C_AUTH
},
951 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
952 { "remove", 1, 1, c_remove
, C_AUTH
},
953 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
954 { "resolve", 1, 1, c_resolve
, C_AUTH
},
955 { "resume", 0, 0, c_resume
, C_AUTH
},
956 { "scratch", 0, 1, c_scratch
, C_AUTH
},
957 { "search", 1, 1, c_search
, C_AUTH
},
958 { "set", 3, 3, c_set
, C_AUTH
, },
959 { "set-global", 2, 2, c_set_global
, C_AUTH
},
960 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
961 { "stats", 0, 0, c_stats
, C_AUTH
},
962 { "tags", 0, 0, c_tags
, C_AUTH
},
963 { "unset", 2, 2, c_set
, C_AUTH
},
964 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
965 { "user", 2, 2, c_user
, 0 },
966 { "version", 0, 0, c_version
, C_AUTH
},
967 { "volume", 0, 2, c_volume
, C_AUTH
}
970 static void command_error(const char *msg
, void *u
) {
973 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
976 /* process a command. Return 1 if complete, 0 if incomplete. */
977 static int command(struct conn
*c
, char *line
) {
981 D(("server command %s", line
));
982 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
983 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
987 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
990 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
991 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
993 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
994 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
997 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
998 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1003 if(nvec
< commands
[n
].minargs
) {
1004 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1007 if(nvec
> commands
[n
].maxargs
) {
1008 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1011 return commands
[n
].fn(c
, vec
, nvec
);
1013 return 1; /* completed */
1016 /* redirect to the right reader callback for our current state */
1017 static int redirect_reader_callback(ev_source
*ev
,
1026 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
1029 /* the main command reader */
1030 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1032 int attribute((unused
)) fd
,
1041 D(("server reader_callback"));
1042 while((eol
= memchr(ptr
, '\n', bytes
))) {
1044 ev_reader_consume(reader
, eol
- (char *)ptr
);
1045 complete
= command(c
, ptr
);
1046 bytes
-= (eol
- (char *)ptr
);
1049 /* the command had better have set a new reader callback */
1051 /* there are further bytes to read, or we are at eof; arrange for the
1052 * command's reader callback to handle them */
1053 return ev_reader_incomplete(reader
);
1054 /* nothing's going on right now */
1057 /* command completed, we can go around and handle the next one */
1061 error(0, "S%x unterminated line", c
->tag
);
1063 return ev_writer_close(c
->w
);
1068 static int listen_callback(ev_source
*ev
,
1070 const struct sockaddr
attribute((unused
)) *remote
,
1071 socklen_t
attribute((unused
)) rlen
,
1073 const struct listener
*l
= u
;
1074 struct conn
*c
= xmalloc(sizeof *c
);
1075 static unsigned tags
;
1077 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1082 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
);
1083 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
);
1085 c
->reader
= reader_callback
;
1087 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1088 if(!strcmp(config
->authorization_algorithm
, "sha1")
1089 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1090 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1091 hex(c
->nonce
, sizeof c
->nonce
));
1093 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1094 config
->authorization_algorithm
,
1095 hex(c
->nonce
, sizeof c
->nonce
));
1100 int server_start(ev_source
*ev
, int pf
,
1101 size_t socklen
, const struct sockaddr
*sa
,
1104 struct listener
*l
= xmalloc(sizeof *l
);
1105 static const int one
= 1;
1107 D(("server_init socket %s", name
));
1108 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1109 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1110 if(bind(fd
, sa
, socklen
) < 0) {
1111 error(errno
, "error binding to %s", name
);
1119 if(ev_listen(ev
, fd
, listen_callback
, l
)) exit(EXIT_FAILURE
);
1123 int server_stop(ev_source
*ev
, int fd
) {
1125 return ev_listen_cancel(ev
, fd
);