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"
63 #include "trackname.h"
71 # define NONCE_SIZE 16
74 int volume_left
, volume_right
; /* last known volume */
76 /** @brief Accept all well-formed login attempts
87 /** @brief One client connection */
89 /** @brief Read commands from here */
91 /** @brief Send responses to here */
93 /** @brief Underlying file descriptor */
95 /** @brief Unique identifier for connection used in log messages */
97 /** @brief Login name or NULL */
99 /** @brief Event loop */
101 /** @brief Nonce chosen for this connection */
102 unsigned char nonce
[NONCE_SIZE
];
103 /** @brief Current reader callback
105 * We change this depending on whether we're servicing the @b log command
107 ev_reader_callback
*reader
;
108 /** @brief Event log output sending to this connection */
109 struct eventlog_output
*lo
;
110 /** @brief Parent listener */
111 const struct listener
*l
;
112 /** @brief Login cookie or NULL */
116 static int reader_callback(ev_source
*ev
,
123 static const char *noyes
[] = { "no", "yes" };
125 /** @brief Called when a connection's writer fails or is shut down
127 * If the connection still has a raeder that is cancelled.
129 static int writer_error(ev_source
attribute((unused
)) *ev
,
134 D(("server writer_error S%x %d", c
->tag
, errno_value
));
135 if(errno_value
== 0) {
137 D(("S%x writer completed", c
->tag
));
139 if(errno_value
!= EPIPE
)
140 error(errno_value
, "S%x write error on socket", c
->tag
);
142 D(("cancel reader"));
143 ev_reader_cancel(c
->r
);
146 D(("done cancel reader"));
153 /** @brief Called when a conncetion's reader fails or is shut down
155 * If connection still has a writer then it is closed.
157 static int reader_error(ev_source
attribute((unused
)) *ev
,
162 D(("server reader_error S%x %d", c
->tag
, errno_value
));
163 error(errno_value
, "S%x read error on socket", c
->tag
);
165 ev_writer_close(c
->w
);
172 /** @brief Return true if we are talking to a trusted user */
173 static int trusted(struct conn
*c
) {
176 for(n
= 0; (n
< config
->trust
.n
177 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
179 return n
< config
->trust
.n
;
182 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
184 disable_playing(c
->who
);
185 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
186 disable_playing(c
->who
);
188 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
189 return 1; /* completed */
191 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
192 return 1; /* completed */
195 static int c_enable(struct conn
*c
,
196 char attribute((unused
)) **vec
,
197 int attribute((unused
)) nvec
) {
198 enable_playing(c
->who
, c
->ev
);
199 /* Enable implicitly unpauses if there is nothing playing */
200 if(paused
&& !playing
) resume_playing(c
->who
);
201 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
202 return 1; /* completed */
205 static int c_enabled(struct conn
*c
,
206 char attribute((unused
)) **vec
,
207 int attribute((unused
)) nvec
) {
208 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
209 return 1; /* completed */
212 static int c_play(struct conn
*c
, char **vec
,
213 int attribute((unused
)) nvec
) {
215 struct queue_entry
*q
;
217 if(!trackdb_exists(vec
[0])) {
218 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
221 if(!(track
= trackdb_resolve(vec
[0]))) {
222 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
225 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
227 /* If we added the first track, and something is playing, then prepare the
228 * new track. If nothing is playing then we don't bother as it wouldn't gain
230 if(q
== qhead
.next
&& playing
)
232 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
233 /* If the queue was empty but we are for some reason paused then
235 if(!playing
) resume_playing(0);
237 return 1; /* completed */
240 static int c_remove(struct conn
*c
, char **vec
,
241 int attribute((unused
)) nvec
) {
242 struct queue_entry
*q
;
244 if(!(q
= queue_find(vec
[0]))) {
245 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
248 if(config
->restrictions
& RESTRICT_REMOVE
) {
249 /* can only remove tracks that you submitted */
250 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
251 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
255 queue_remove(q
, c
->who
);
256 /* De-prepare the track. */
258 /* If we removed the random track then add another one. */
259 if(q
->state
== playing_random
)
261 /* Prepare whatever the next head track is. */
262 if(qhead
.next
!= &qhead
)
263 prepare(c
->ev
, qhead
.next
);
265 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
266 return 1; /* completed */
269 static int c_scratch(struct conn
*c
,
273 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
274 return 1; /* completed */
276 if(config
->restrictions
& RESTRICT_SCRATCH
) {
277 /* can only scratch tracks you submitted and randomly selected ones */
278 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
279 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
283 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
284 /* If you scratch an unpaused track then it is automatically unpaused */
286 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
287 return 1; /* completed */
290 static int c_pause(struct conn
*c
,
291 char attribute((unused
)) **vec
,
292 int attribute((unused
)) nvec
) {
294 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
295 return 1; /* completed */
298 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
299 return 1; /* completed */
301 if(pause_playing(c
->who
) < 0)
302 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
304 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
308 static int c_resume(struct conn
*c
,
309 char attribute((unused
)) **vec
,
310 int attribute((unused
)) nvec
) {
312 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
313 return 1; /* completed */
315 resume_playing(c
->who
);
316 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
320 static int c_shutdown(struct conn
*c
,
321 char attribute((unused
)) **vec
,
322 int attribute((unused
)) nvec
) {
323 info("S%x shut down by %s", c
->tag
, c
->who
);
324 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
325 ev_writer_flush(c
->w
);
329 static int c_reconfigure(struct conn
*c
,
330 char attribute((unused
)) **vec
,
331 int attribute((unused
)) nvec
) {
332 info("S%x reconfigure by %s", c
->tag
, c
->who
);
333 if(reconfigure(c
->ev
, 1))
334 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
336 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
337 return 1; /* completed */
340 static int c_rescan(struct conn
*c
,
341 char attribute((unused
)) **vec
,
342 int attribute((unused
)) nvec
) {
343 info("S%x rescan by %s", c
->tag
, c
->who
);
344 trackdb_rescan(c
->ev
);
345 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
346 return 1; /* completed */
349 static int c_version(struct conn
*c
,
350 char attribute((unused
)) **vec
,
351 int attribute((unused
)) nvec
) {
352 /* VERSION had better only use the basic character set */
353 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
354 return 1; /* completed */
357 static int c_playing(struct conn
*c
,
358 char attribute((unused
)) **vec
,
359 int attribute((unused
)) nvec
) {
361 queue_fix_sofar(playing
);
362 playing
->expected
= 0;
363 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
365 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
366 return 1; /* completed */
369 static int c_become(struct conn
*c
,
371 int attribute((unused
)) nvec
) {
373 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
377 static const char *connection_host(struct conn
*c
) {
380 struct sockaddr_in in
;
381 struct sockaddr_in6 in6
;
387 /* get connection data */
389 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
390 error(errno
, "S%x error calling getpeername", c
->tag
);
393 if(c
->l
->pf
!= PF_UNIX
) {
394 if((n
= getnameinfo(&u
.sa
, l
,
395 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
396 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
399 return xstrdup(host
);
404 static int c_user(struct conn
*c
,
406 int attribute((unused
)) nvec
) {
407 const char *res
, *host
, *password
;
410 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
413 /* get connection data */
414 if(!(host
= connection_host(c
))) {
415 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
419 password
= trackdb_get_password(vec
[0]);
420 /* reject nonexistent users */
422 info("S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
423 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
426 /* check whether the response is right */
427 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
428 config
->authorization_algorithm
);
429 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
431 /* currently we only bother logging remote connections */
432 if(strcmp(host
, "local"))
433 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
434 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
437 /* oops, response was wrong */
438 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
439 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
443 static int c_recent(struct conn
*c
,
444 char attribute((unused
)) **vec
,
445 int attribute((unused
)) nvec
) {
446 const struct queue_entry
*q
;
448 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
449 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
450 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
451 sink_writes(ev_writer_sink(c
->w
), ".\n");
452 return 1; /* completed */
455 static int c_queue(struct conn
*c
,
456 char attribute((unused
)) **vec
,
457 int attribute((unused
)) nvec
) {
458 struct queue_entry
*q
;
463 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
464 if(playing_is_enabled() && !paused
) {
466 queue_fix_sofar(playing
);
467 if((l
= trackdb_get(playing
->track
, "_length"))
468 && (length
= atol(l
))) {
470 when
+= length
- playing
->sofar
+ config
->gap
;
473 /* Nothing is playing but playing is enabled, so whatever is
474 * first in the queue can be expected to start immediately. */
477 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
478 /* fill in estimated start time */
480 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
481 /* update for next track */
483 if((l
= trackdb_get(q
->track
, "_length"))
484 && (length
= atol(l
)))
485 when
+= length
+ config
->gap
;
490 sink_writes(ev_writer_sink(c
->w
), ".\n");
491 return 1; /* completed */
494 static int output_list(struct conn
*c
, char **vec
) {
496 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
497 sink_writes(ev_writer_sink(c
->w
), ".\n");
501 static int files_dirs(struct conn
*c
,
504 enum trackdb_listable what
) {
505 const char *dir
, *re
, *errstr
;
511 case 0: dir
= 0; re
= 0; break;
512 case 1: dir
= vec
[0]; re
= 0; break;
513 case 2: dir
= vec
[0]; re
= vec
[1]; break;
516 /* A bit of a bodge to make sure the args don't trample on cache keys */
517 if(dir
&& strchr(dir
, '\n')) {
518 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
521 if(re
&& strchr(re
, '\n')) {
522 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
525 /* We bother eliminating "" because the web interface is relatively
526 * likely to send it */
528 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
529 fvec
= (char **)cache_get(&cache_files_type
, key
);
531 /* Got a cache hit, don't store the answer in the cache */
534 rec
= 0; /* quieten compiler */
536 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
538 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
539 &errstr
, &erroffset
, 0))) {
540 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
544 /* It only counts as a miss if the regexp was valid. */
545 ++cache_files_misses
;
548 /* No regexp, don't bother caching the result */
554 /* No cache hit (either because a miss, or because we did not look) so do
557 fvec
= trackdb_list(dir
, 0, what
, rec
);
559 fvec
= trackdb_list(0, 0, what
, rec
);
562 /* Put the answer in the cache */
563 cache_put(&cache_files_type
, key
, fvec
);
564 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
565 return output_list(c
, fvec
);
568 static int c_files(struct conn
*c
,
571 return files_dirs(c
, vec
, nvec
, trackdb_files
);
574 static int c_dirs(struct conn
*c
,
577 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
580 static int c_allfiles(struct conn
*c
,
583 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
586 static int c_get(struct conn
*c
,
588 int attribute((unused
)) nvec
) {
591 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
592 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
594 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
598 static int c_length(struct conn
*c
,
600 int attribute((unused
)) nvec
) {
601 const char *track
, *v
;
603 if(!(track
= trackdb_resolve(vec
[0]))) {
604 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
607 if((v
= trackdb_get(track
, "_length")))
608 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
610 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
614 static int c_set(struct conn
*c
,
616 int attribute((unused
)) nvec
) {
617 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
618 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
620 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
624 static int c_prefs(struct conn
*c
,
626 int attribute((unused
)) nvec
) {
629 k
= trackdb_get_all(vec
[0]);
630 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
631 for(; k
; k
= k
->next
)
632 if(k
->name
[0] != '_') /* omit internal values */
633 sink_printf(ev_writer_sink(c
->w
),
634 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
635 sink_writes(ev_writer_sink(c
->w
), ".\n");
639 static int c_exists(struct conn
*c
,
641 int attribute((unused
)) nvec
) {
642 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
646 static void search_parse_error(const char *msg
, void *u
) {
647 *(const char **)u
= msg
;
650 static int c_search(struct conn
*c
,
652 int attribute((unused
)) nvec
) {
653 char **terms
, **results
;
654 int nterms
, nresults
, n
;
655 const char *e
= "unknown error";
657 /* This is a bit of a bodge. Initially it's there to make the eclient
658 * interface a bit more convenient to add searching to, but it has the more
659 * compelling advantage that if everything uses it, then interpretation of
660 * user-supplied search strings will be the same everywhere. */
661 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
662 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
664 results
= trackdb_search(terms
, nterms
, &nresults
);
665 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
666 for(n
= 0; n
< nresults
; ++n
)
667 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
668 sink_writes(ev_writer_sink(c
->w
), ".\n");
673 static int c_random_enable(struct conn
*c
,
674 char attribute((unused
)) **vec
,
675 int attribute((unused
)) nvec
) {
676 enable_random(c
->who
, c
->ev
);
677 /* Enable implicitly unpauses if there is nothing playing */
678 if(paused
&& !playing
) resume_playing(c
->who
);
679 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
680 return 1; /* completed */
683 static int c_random_disable(struct conn
*c
,
684 char attribute((unused
)) **vec
,
685 int attribute((unused
)) nvec
) {
686 disable_random(c
->who
);
687 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
688 return 1; /* completed */
691 static int c_random_enabled(struct conn
*c
,
692 char attribute((unused
)) **vec
,
693 int attribute((unused
)) nvec
) {
694 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
695 return 1; /* completed */
698 static void got_stats(char *stats
, void *u
) {
699 struct conn
*const c
= u
;
701 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
702 /* Now we can start processing commands again */
703 ev_reader_enable(c
->r
);
706 static int c_stats(struct conn
*c
,
707 char attribute((unused
)) **vec
,
708 int attribute((unused
)) nvec
) {
709 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
710 return 0; /* not yet complete */
713 static int c_volume(struct conn
*c
,
724 l
= r
= atoi(vec
[0]);
735 if(mixer_control(&l
, &r
, set
))
736 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
738 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
739 if(l
!= volume_left
|| r
!= volume_right
) {
742 snprintf(lb
, sizeof lb
, "%d", l
);
743 snprintf(rb
, sizeof rb
, "%d", r
);
744 eventlog("volume", lb
, rb
, (char *)0);
750 /** @brief Called when data arrives on a log connection
752 * We just discard all such data. The client may occasionally send data as a
755 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
757 void attribute((unused
)) *ptr
,
759 int attribute((unused
)) eof
,
760 void attribute((unused
)) *u
) {
763 ev_reader_consume(reader
, bytes
);
765 /* Oops, that's all for now */
766 D(("logging reader eof"));
769 ev_writer_close(c
->w
);
777 static void logclient(const char *msg
, void *user
) {
778 struct conn
*c
= user
;
781 /* This connection has gone up in smoke for some reason */
782 eventlog_remove(c
->lo
);
785 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
786 (uintmax_t)time(0), msg
);
789 static int c_log(struct conn
*c
,
790 char attribute((unused
)) **vec
,
791 int attribute((unused
)) nvec
) {
794 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
795 /* pump out initial state */
797 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
799 playing_is_enabled() ?
"enable_play" : "disable_play");
800 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
802 random_is_enabled() ?
"enable_random" : "disable_random");
803 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
805 paused ?
"pause" : "resume");
807 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
810 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
811 (uintmax_t)now
, volume_left
, volume_right
);
812 c
->lo
= xmalloc(sizeof *c
->lo
);
813 c
->lo
->fn
= logclient
;
816 c
->reader
= logging_reader_callback
;
820 static int c_move(struct conn
*c
,
822 int attribute((unused
)) nvec
) {
823 struct queue_entry
*q
;
826 if(config
->restrictions
& RESTRICT_MOVE
) {
828 sink_writes(ev_writer_sink(c
->w
),
829 "550 only trusted users can move tracks\n");
833 if(!(q
= queue_find(vec
[0]))) {
834 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
837 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
838 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
839 /* If we've moved to the head of the queue then prepare the track. */
845 static int c_moveafter(struct conn
*c
,
847 int attribute((unused
)) nvec
) {
848 struct queue_entry
*q
, **qs
;
851 if(config
->restrictions
& RESTRICT_MOVE
) {
853 sink_writes(ev_writer_sink(c
->w
),
854 "550 only trusted users can move tracks\n");
859 if(!(q
= queue_find(vec
[0]))) {
860 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
867 qs
= xcalloc(nvec
, sizeof *qs
);
868 for(n
= 0; n
< nvec
; ++n
)
869 if(!(qs
[n
] = queue_find(vec
[n
]))) {
870 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
873 queue_moveafter(q
, nvec
, qs
, c
->who
);
874 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
875 /* If we've moved to the head of the queue then prepare the track. */
881 static int c_part(struct conn
*c
,
883 int attribute((unused
)) nvec
) {
884 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
885 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
889 static int c_resolve(struct conn
*c
,
891 int attribute((unused
)) nvec
) {
894 if(!(track
= trackdb_resolve(vec
[0]))) {
895 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
898 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
902 static int c_tags(struct conn
*c
,
903 char attribute((unused
)) **vec
,
904 int attribute((unused
)) nvec
) {
905 char **tags
= trackdb_alltags();
907 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
909 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
910 **tags
== '.' ?
"." : "", *tags
);
913 sink_writes(ev_writer_sink(c
->w
), ".\n");
914 return 1; /* completed */
917 static int c_set_global(struct conn
*c
,
919 int attribute((unused
)) nvec
) {
920 if(vec
[0][0] == '_') {
921 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
924 trackdb_set_global(vec
[0], vec
[1], c
->who
);
925 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
929 static int c_get_global(struct conn
*c
,
931 int attribute((unused
)) nvec
) {
932 const char *s
= trackdb_get_global(vec
[0]);
935 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
937 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
941 static int c_nop(struct conn
*c
,
942 char attribute((unused
)) **vec
,
943 int attribute((unused
)) nvec
) {
944 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
948 static int c_new(struct conn
*c
,
951 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
953 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
955 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
956 **tracks
== '.' ?
"." : "", *tracks
);
959 sink_writes(ev_writer_sink(c
->w
), ".\n");
960 return 1; /* completed */
964 static int c_rtp_address(struct conn
*c
,
965 char attribute((unused
)) **vec
,
966 int attribute((unused
)) nvec
) {
967 if(config
->speaker_backend
== BACKEND_NETWORK
) {
968 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
969 quoteutf8(config
->broadcast
.s
[0]),
970 quoteutf8(config
->broadcast
.s
[1]));
972 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
976 static int c_cookie(struct conn
*c
,
978 int attribute((unused
)) nvec
) {
982 /* Can't log in twice on the same connection */
984 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
987 /* Get some kind of peer identifcation */
988 if(!(host
= connection_host(c
))) {
989 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
992 /* Check the cookie */
993 user
= verify_cookie(vec
[0]);
995 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1001 if(strcmp(host
, "local"))
1002 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1003 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
1007 static int c_make_cookie(struct conn
*c
,
1008 char attribute((unused
)) **vec
,
1009 int attribute((unused
)) nvec
) {
1010 const char *cookie
= make_cookie(c
->who
);
1013 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", cookie
);
1015 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1019 static int c_revoke(struct conn
*c
,
1020 char attribute((unused
)) **vec
,
1021 int attribute((unused
)) nvec
) {
1023 revoke_cookie(c
->cookie
);
1024 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1026 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1030 static int c_adduser(struct conn
*c
,
1032 int attribute((unused
)) nvec
) {
1033 /* TODO local only */
1034 if(trackdb_adduser(vec
[0], vec
[1], default_rights(), 0))
1035 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1037 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1041 static int c_deluser(struct conn
*c
,
1043 int attribute((unused
)) nvec
) {
1044 /* TODO local only */
1045 if(trackdb_deluser(vec
[0]))
1046 sink_writes(ev_writer_sink(c
->w
), "550 Cannot deleted user\n");
1048 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1052 static int c_edituser(struct conn
*c
,
1054 int attribute((unused
)) nvec
) {
1055 /* TODO local only */
1057 || (!strcmp(c
->who
, vec
[0])
1058 && (!strcmp(vec
[1], "email")
1059 || !strcmp(vec
[1], "password")))) {
1060 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2]))
1061 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1063 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1065 sink_writes(ev_writer_sink(c
->w
), "550 Restricted to administrators\n");
1069 static int c_userinfo(struct conn
*c
,
1070 char attribute((unused
)) **vec
,
1071 int attribute((unused
)) nvec
) {
1075 /* TODO local only */
1077 || (!strcmp(c
->who
, vec
[0])
1078 && (!strcmp(vec
[1], "email")
1079 || !strcmp(vec
[1], "rights")))) {
1080 if((k
= trackdb_getuserinfo(vec
[0])))
1081 if((value
= kvp_get(k
, vec
[1])))
1082 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1084 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1086 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1088 sink_writes(ev_writer_sink(c
->w
), "550 Restricted to administrators\n");
1092 static int c_users(struct conn
*c
,
1093 char attribute((unused
)) **vec
,
1094 int attribute((unused
)) nvec
) {
1095 /* TODO de-dupe with c_tags */
1096 char **users
= trackdb_listusers();
1098 sink_writes(ev_writer_sink(c
->w
), "253 User list follows\n");
1100 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1101 **users
== '.' ?
"." : "", *users
);
1104 sink_writes(ev_writer_sink(c
->w
), ".\n");
1105 return 1; /* completed */
1108 #define C_AUTH 0001 /* must be authenticated */
1109 #define C_TRUSTED 0002 /* must be trusted user */
1111 static const struct command
{
1113 int minargs
, maxargs
;
1114 int (*fn
)(struct conn
*, char **, int);
1117 { "adduser", 2, 2, c_adduser
, C_AUTH
|C_TRUSTED
},
1118 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
1119 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
1120 { "cookie", 1, 1, c_cookie
, 0 },
1121 { "deluser", 1, 1, c_deluser
, C_AUTH
|C_TRUSTED
},
1122 { "dirs", 0, 2, c_dirs
, C_AUTH
},
1123 { "disable", 0, 1, c_disable
, C_AUTH
},
1124 { "edituser", 3, 3, c_edituser
, C_AUTH
},
1125 { "enable", 0, 0, c_enable
, C_AUTH
},
1126 { "enabled", 0, 0, c_enabled
, C_AUTH
},
1127 { "exists", 1, 1, c_exists
, C_AUTH
},
1128 { "files", 0, 2, c_files
, C_AUTH
},
1129 { "get", 2, 2, c_get
, C_AUTH
},
1130 { "get-global", 1, 1, c_get_global
, C_AUTH
},
1131 { "length", 1, 1, c_length
, C_AUTH
},
1132 { "log", 0, 0, c_log
, C_AUTH
},
1133 { "make-cookie", 0, 0, c_make_cookie
, C_AUTH
},
1134 { "move", 2, 2, c_move
, C_AUTH
},
1135 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
1136 { "new", 0, 1, c_new
, C_AUTH
},
1137 { "nop", 0, 0, c_nop
, C_AUTH
},
1138 { "part", 3, 3, c_part
, C_AUTH
},
1139 { "pause", 0, 0, c_pause
, C_AUTH
},
1140 { "play", 1, 1, c_play
, C_AUTH
},
1141 { "playing", 0, 0, c_playing
, C_AUTH
},
1142 { "prefs", 1, 1, c_prefs
, C_AUTH
},
1143 { "queue", 0, 0, c_queue
, C_AUTH
},
1144 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
1145 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
1146 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
1147 { "recent", 0, 0, c_recent
, C_AUTH
},
1148 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
1149 { "remove", 1, 1, c_remove
, C_AUTH
},
1150 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
1151 { "resolve", 1, 1, c_resolve
, C_AUTH
},
1152 { "resume", 0, 0, c_resume
, C_AUTH
},
1153 { "revoke", 0, 0, c_revoke
, C_AUTH
},
1154 { "rtp-address", 0, 0, c_rtp_address
, C_AUTH
},
1155 { "scratch", 0, 1, c_scratch
, C_AUTH
},
1156 { "search", 1, 1, c_search
, C_AUTH
},
1157 { "set", 3, 3, c_set
, C_AUTH
, },
1158 { "set-global", 2, 2, c_set_global
, C_AUTH
},
1159 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
1160 { "stats", 0, 0, c_stats
, C_AUTH
},
1161 { "tags", 0, 0, c_tags
, C_AUTH
},
1162 { "unset", 2, 2, c_set
, C_AUTH
},
1163 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
1164 { "user", 2, 2, c_user
, 0 },
1165 { "userinfo", 2, 2, c_userinfo
, C_AUTH
},
1166 { "users", 0, 0, c_users
, C_AUTH
},
1167 { "version", 0, 0, c_version
, C_AUTH
},
1168 { "volume", 0, 2, c_volume
, C_AUTH
}
1171 static void command_error(const char *msg
, void *u
) {
1174 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1177 /* process a command. Return 1 if complete, 0 if incomplete. */
1178 static int command(struct conn
*c
, char *line
) {
1182 D(("server command %s", line
));
1183 /* We force everything into NFC as early as possible */
1184 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1185 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1188 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1189 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1193 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1196 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1197 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1199 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
1200 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
1203 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
1204 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1209 if(nvec
< commands
[n
].minargs
) {
1210 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1213 if(nvec
> commands
[n
].maxargs
) {
1214 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1217 return commands
[n
].fn(c
, vec
, nvec
);
1219 return 1; /* completed */
1222 /* redirect to the right reader callback for our current state */
1223 static int redirect_reader_callback(ev_source
*ev
,
1231 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1234 /* the main command reader */
1235 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1245 D(("server reader_callback"));
1246 while((eol
= memchr(ptr
, '\n', bytes
))) {
1248 ev_reader_consume(reader
, eol
- (char *)ptr
);
1249 complete
= command(c
, ptr
);
1250 bytes
-= (eol
- (char *)ptr
);
1253 /* the command had better have set a new reader callback */
1255 /* there are further bytes to read, or we are at eof; arrange for the
1256 * command's reader callback to handle them */
1257 return ev_reader_incomplete(reader
);
1258 /* nothing's going on right now */
1261 /* command completed, we can go around and handle the next one */
1265 error(0, "S%x unterminated line", c
->tag
);
1266 D(("normal reader close"));
1269 D(("close associated writer"));
1270 ev_writer_close(c
->w
);
1277 static int listen_callback(ev_source
*ev
,
1279 const struct sockaddr
attribute((unused
)) *remote
,
1280 socklen_t
attribute((unused
)) rlen
,
1282 const struct listener
*l
= u
;
1283 struct conn
*c
= xmalloc(sizeof *c
);
1284 static unsigned tags
;
1286 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1291 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1293 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1297 c
->reader
= reader_callback
;
1299 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1300 if(!strcmp(config
->authorization_algorithm
, "sha1")
1301 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1302 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1303 hex(c
->nonce
, sizeof c
->nonce
));
1305 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1306 config
->authorization_algorithm
,
1307 hex(c
->nonce
, sizeof c
->nonce
));
1312 int server_start(ev_source
*ev
, int pf
,
1313 size_t socklen
, const struct sockaddr
*sa
,
1316 struct listener
*l
= xmalloc(sizeof *l
);
1317 static const int one
= 1;
1319 D(("server_init socket %s", name
));
1320 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1321 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1322 if(bind(fd
, sa
, socklen
) < 0) {
1323 error(errno
, "error binding to %s", name
);
1331 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1336 int server_stop(ev_source
*ev
, int fd
) {
1338 return ev_listen_cancel(ev
, fd
);