2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2008 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 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU 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, see <http://www.gnu.org/licenses/>.
19 #include "disorder-server.h"
22 # define NONCE_SIZE 16
26 # define CONFIRM_SIZE 10
29 int volume_left
, volume_right
; /* last known volume */
31 /** @brief Accept all well-formed login attempts
42 /** @brief One client connection */
44 /** @brief Read commands from here */
46 /** @brief Send responses to here */
48 /** @brief Underlying file descriptor */
50 /** @brief Unique identifier for connection used in log messages */
52 /** @brief Login name or NULL */
54 /** @brief Event loop */
56 /** @brief Nonce chosen for this connection */
57 unsigned char nonce
[NONCE_SIZE
];
58 /** @brief Current reader callback
60 * We change this depending on whether we're servicing the @b log command
62 ev_reader_callback
*reader
;
63 /** @brief Event log output sending to this connection */
64 struct eventlog_output
*lo
;
65 /** @brief Parent listener */
66 const struct listener
*l
;
67 /** @brief Login cookie or NULL */
69 /** @brief Connection rights */
71 /** @brief Next connection */
73 /** @brief True if pending rescan had 'wait' set */
77 /** @brief Linked list of connections */
78 static struct conn
*connections
;
80 static int reader_callback(ev_source
*ev
,
87 static const char *noyes
[] = { "no", "yes" };
89 /** @brief Remove a connection from the connection list */
90 static void remove_connection(struct conn
*c
) {
93 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
99 /** @brief Called when a connection's writer fails or is shut down
101 * If the connection still has a raeder that is cancelled.
103 static int writer_error(ev_source
attribute((unused
)) *ev
,
108 D(("server writer_error S%x %d", c
->tag
, errno_value
));
109 if(errno_value
== 0) {
111 D(("S%x writer completed", c
->tag
));
113 if(errno_value
!= EPIPE
)
114 error(errno_value
, "S%x write error on socket", c
->tag
);
116 D(("cancel reader"));
117 ev_reader_cancel(c
->r
);
120 D(("done cancel reader"));
124 remove_connection(c
);
128 /** @brief Called when a conncetion's reader fails or is shut down
130 * If connection still has a writer then it is closed.
132 static int reader_error(ev_source
attribute((unused
)) *ev
,
137 D(("server reader_error S%x %d", c
->tag
, errno_value
));
138 error(errno_value
, "S%x read error on socket", c
->tag
);
140 ev_writer_close(c
->w
);
144 remove_connection(c
);
148 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
150 disable_playing(c
->who
);
151 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
152 disable_playing(c
->who
);
154 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
155 return 1; /* completed */
157 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
158 return 1; /* completed */
161 static int c_enable(struct conn
*c
,
162 char attribute((unused
)) **vec
,
163 int attribute((unused
)) nvec
) {
164 enable_playing(c
->who
, c
->ev
);
165 /* Enable implicitly unpauses if there is nothing playing */
166 if(paused
&& !playing
) resume_playing(c
->who
);
167 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
168 return 1; /* completed */
171 static int c_enabled(struct conn
*c
,
172 char attribute((unused
)) **vec
,
173 int attribute((unused
)) nvec
) {
174 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
175 return 1; /* completed */
178 static int c_play(struct conn
*c
, char **vec
,
179 int attribute((unused
)) nvec
) {
181 struct queue_entry
*q
;
183 if(!trackdb_exists(vec
[0])) {
184 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
187 if(!(track
= trackdb_resolve(vec
[0]))) {
188 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
191 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
, origin_picked
);
193 /* If we added the first track, and something is playing, then prepare the
194 * new track. If nothing is playing then we don't bother as it wouldn't gain
196 if(q
== qhead
.next
&& playing
)
198 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
199 /* If the queue was empty but we are for some reason paused then
201 if(!playing
) resume_playing(0);
203 return 1; /* completed */
206 static int c_remove(struct conn
*c
, char **vec
,
207 int attribute((unused
)) nvec
) {
208 struct queue_entry
*q
;
210 if(!(q
= queue_find(vec
[0]))) {
211 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
214 if(!right_removable(c
->rights
, c
->who
, q
)) {
215 error(0, "%s attempted remove but lacks required rights", c
->who
);
216 sink_writes(ev_writer_sink(c
->w
),
217 "510 Not authorized to remove that track\n");
220 queue_remove(q
, c
->who
);
221 /* De-prepare the track. */
223 /* See about adding a new random track */
224 add_random_track(c
->ev
);
225 /* Prepare whatever the next head track is. */
226 if(qhead
.next
!= &qhead
)
227 prepare(c
->ev
, qhead
.next
);
229 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
230 return 1; /* completed */
233 static int c_scratch(struct conn
*c
,
237 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
238 return 1; /* completed */
240 /* TODO there is a bug here: if we specify an ID but it's not the currently
241 * playing track then you will get 550 if you weren't authorized to scratch
242 * the currently playing track. */
243 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
244 error(0, "%s attempted scratch but lacks required rights", c
->who
);
245 sink_writes(ev_writer_sink(c
->w
),
246 "510 Not authorized to scratch that track\n");
249 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
250 /* If you scratch an unpaused track then it is automatically unpaused */
252 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
253 return 1; /* completed */
256 static int c_pause(struct conn
*c
,
257 char attribute((unused
)) **vec
,
258 int attribute((unused
)) nvec
) {
260 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
261 return 1; /* completed */
264 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
265 return 1; /* completed */
267 if(pause_playing(c
->who
) < 0)
268 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
270 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
274 static int c_resume(struct conn
*c
,
275 char attribute((unused
)) **vec
,
276 int attribute((unused
)) nvec
) {
278 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
279 return 1; /* completed */
281 resume_playing(c
->who
);
282 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
286 static int c_shutdown(struct conn
*c
,
287 char attribute((unused
)) **vec
,
288 int attribute((unused
)) nvec
) {
289 info("S%x shut down by %s", c
->tag
, c
->who
);
290 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
291 ev_writer_flush(c
->w
);
295 static int c_reconfigure(struct conn
*c
,
296 char attribute((unused
)) **vec
,
297 int attribute((unused
)) nvec
) {
298 info("S%x reconfigure by %s", c
->tag
, c
->who
);
299 if(reconfigure(c
->ev
, 1))
300 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
302 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
303 return 1; /* completed */
306 static void finished_rescan(void *ru
) {
307 struct conn
*const c
= ru
;
309 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
310 /* Turn this connection back on */
311 ev_reader_enable(c
->r
);
314 static void start_fresh_rescan(void *ru
) {
315 struct conn
*const c
= ru
;
317 if(trackdb_rescan_underway()) {
318 /* Some other waiter beat us to it. However in this case we're happy to
319 * piggyback; the requirement is that a new rescan be started, not that it
320 * was _our_ rescan. */
322 /* We block until the rescan completes */
323 trackdb_add_rescanned(finished_rescan
, c
);
325 /* We report that the new rescan has started */
326 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
327 /* Turn this connection back on */
328 ev_reader_enable(c
->r
);
331 /* We are the first connection to get a callback so we must start a
334 /* We want to block until the new rescan completes */
335 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
337 /* We can report back immediately */
338 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
339 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
340 /* Turn this connection back on */
341 ev_reader_enable(c
->r
);
346 static int c_rescan(struct conn
*c
,
349 int flag_wait
= 0, flag_fresh
= 0, n
;
352 for(n
= 0; n
< nvec
; ++n
) {
353 if(!strcmp(vec
[n
], "wait"))
354 flag_wait
= 1; /* wait for rescan to complete */
356 /* Currently disabled because untested (and hard to test). */
357 else if(!strcmp(vec
[n
], "fresh"))
358 flag_fresh
= 1; /* don't piggyback underway rescan */
361 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
362 return 1; /* completed */
365 /* Report what was requested */
366 info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
367 flag_wait ?
"wait" : "",
368 flag_fresh ?
"fresh" : "");
369 if(trackdb_rescan_underway()) {
371 /* We want a fresh rescan but there is already one underway. Arrange a
372 * callback when it completes and then set off a new one. */
373 c
->rescan_wait
= flag_wait
;
374 trackdb_add_rescanned(start_fresh_rescan
, c
);
378 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
382 /* There's a rescan underway, and it's acceptable to piggyback on it */
384 /* We want to block until completion. */
385 trackdb_add_rescanned(finished_rescan
, c
);
388 /* We don't want to block. So we just report that things are in
390 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
395 /* No rescan is underway. fresh is therefore irrelevant. */
397 /* We want to block until completion */
398 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
401 /* We don't want to block. */
402 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
403 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
404 return 1; /* completed */
409 static int c_version(struct conn
*c
,
410 char attribute((unused
)) **vec
,
411 int attribute((unused
)) nvec
) {
412 /* VERSION had better only use the basic character set */
413 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
414 return 1; /* completed */
417 static int c_playing(struct conn
*c
,
418 char attribute((unused
)) **vec
,
419 int attribute((unused
)) nvec
) {
421 queue_fix_sofar(playing
);
422 playing
->expected
= 0;
423 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
425 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
426 return 1; /* completed */
429 static const char *connection_host(struct conn
*c
) {
432 struct sockaddr_in in
;
433 struct sockaddr_in6 in6
;
439 /* get connection data */
441 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
442 error(errno
, "S%x error calling getpeername", c
->tag
);
445 if(c
->l
->pf
!= PF_UNIX
) {
446 if((n
= getnameinfo(&u
.sa
, l
,
447 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
448 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
451 return xstrdup(host
);
456 static int c_user(struct conn
*c
,
458 int attribute((unused
)) nvec
) {
460 const char *res
, *host
, *password
;
464 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
467 /* get connection data */
468 if(!(host
= connection_host(c
))) {
469 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
473 k
= trackdb_getuserinfo(vec
[0]);
474 /* reject nonexistent users */
476 error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
477 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
480 /* reject unconfirmed users */
481 if(kvp_get(k
, "confirmation")) {
482 error(0, "S%x unconfirmed user '%s' from %s", c
->tag
, vec
[0], host
);
483 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
486 password
= kvp_get(k
, "password");
487 if(!password
) password
= "";
488 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
489 error(0, "error parsing rights for %s", vec
[0]);
490 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
493 /* check whether the response is right */
494 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
495 config
->authorization_algorithm
);
496 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
499 /* currently we only bother logging remote connections */
500 if(strcmp(host
, "local"))
501 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
503 c
->rights
|= RIGHT__LOCAL
;
504 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
507 /* oops, response was wrong */
508 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
509 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
513 static int c_recent(struct conn
*c
,
514 char attribute((unused
)) **vec
,
515 int attribute((unused
)) nvec
) {
516 const struct queue_entry
*q
;
518 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
519 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
520 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
521 sink_writes(ev_writer_sink(c
->w
), ".\n");
522 return 1; /* completed */
525 static int c_queue(struct conn
*c
,
526 char attribute((unused
)) **vec
,
527 int attribute((unused
)) nvec
) {
528 struct queue_entry
*q
;
533 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
534 if(playing_is_enabled() && !paused
) {
536 queue_fix_sofar(playing
);
537 if((l
= trackdb_get(playing
->track
, "_length"))
538 && (length
= atol(l
))) {
540 when
+= length
- playing
->sofar
+ config
->gap
;
543 /* Nothing is playing but playing is enabled, so whatever is
544 * first in the queue can be expected to start immediately. */
547 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
548 /* fill in estimated start time */
550 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
551 /* update for next track */
553 if((l
= trackdb_get(q
->track
, "_length"))
554 && (length
= atol(l
)))
555 when
+= length
+ config
->gap
;
560 sink_writes(ev_writer_sink(c
->w
), ".\n");
561 return 1; /* completed */
564 static int output_list(struct conn
*c
, char **vec
) {
566 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
567 sink_writes(ev_writer_sink(c
->w
), ".\n");
571 static int files_dirs(struct conn
*c
,
574 enum trackdb_listable what
) {
575 const char *dir
, *re
, *errstr
;
581 case 0: dir
= 0; re
= 0; break;
582 case 1: dir
= vec
[0]; re
= 0; break;
583 case 2: dir
= vec
[0]; re
= vec
[1]; break;
586 /* A bit of a bodge to make sure the args don't trample on cache keys */
587 if(dir
&& strchr(dir
, '\n')) {
588 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
591 if(re
&& strchr(re
, '\n')) {
592 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
595 /* We bother eliminating "" because the web interface is relatively
596 * likely to send it */
598 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
599 fvec
= (char **)cache_get(&cache_files_type
, key
);
601 /* Got a cache hit, don't store the answer in the cache */
604 rec
= 0; /* quieten compiler */
606 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
608 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
609 &errstr
, &erroffset
, 0))) {
610 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
614 /* It only counts as a miss if the regexp was valid. */
615 ++cache_files_misses
;
618 /* No regexp, don't bother caching the result */
624 /* No cache hit (either because a miss, or because we did not look) so do
627 fvec
= trackdb_list(dir
, 0, what
, rec
);
629 fvec
= trackdb_list(0, 0, what
, rec
);
632 /* Put the answer in the cache */
633 cache_put(&cache_files_type
, key
, fvec
);
634 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
635 return output_list(c
, fvec
);
638 static int c_files(struct conn
*c
,
641 return files_dirs(c
, vec
, nvec
, trackdb_files
);
644 static int c_dirs(struct conn
*c
,
647 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
650 static int c_allfiles(struct conn
*c
,
653 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
656 static int c_get(struct conn
*c
,
658 int attribute((unused
)) nvec
) {
659 const char *v
, *track
;
661 if(!(track
= trackdb_resolve(vec
[0]))) {
662 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
665 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
666 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
668 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
672 static int c_length(struct conn
*c
,
674 int attribute((unused
)) nvec
) {
675 const char *track
, *v
;
677 if(!(track
= trackdb_resolve(vec
[0]))) {
678 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
681 if((v
= trackdb_get(track
, "_length")))
682 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
684 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
688 static int c_set(struct conn
*c
,
690 int attribute((unused
)) nvec
) {
693 if(!(track
= trackdb_resolve(vec
[0]))) {
694 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
697 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
698 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
700 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
704 static int c_prefs(struct conn
*c
,
706 int attribute((unused
)) nvec
) {
710 if(!(track
= trackdb_resolve(vec
[0]))) {
711 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
714 k
= trackdb_get_all(track
);
715 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
716 for(; k
; k
= k
->next
)
717 if(k
->name
[0] != '_') /* omit internal values */
718 sink_printf(ev_writer_sink(c
->w
),
719 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
720 sink_writes(ev_writer_sink(c
->w
), ".\n");
724 static int c_exists(struct conn
*c
,
726 int attribute((unused
)) nvec
) {
727 /* trackdb_exists() does its own alias checking */
728 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
732 static void search_parse_error(const char *msg
, void *u
) {
733 *(const char **)u
= msg
;
736 static int c_search(struct conn
*c
,
738 int attribute((unused
)) nvec
) {
739 char **terms
, **results
;
740 int nterms
, nresults
, n
;
741 const char *e
= "unknown error";
743 /* This is a bit of a bodge. Initially it's there to make the eclient
744 * interface a bit more convenient to add searching to, but it has the more
745 * compelling advantage that if everything uses it, then interpretation of
746 * user-supplied search strings will be the same everywhere. */
747 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
748 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
750 results
= trackdb_search(terms
, nterms
, &nresults
);
751 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
752 for(n
= 0; n
< nresults
; ++n
)
753 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
754 sink_writes(ev_writer_sink(c
->w
), ".\n");
759 static int c_random_enable(struct conn
*c
,
760 char attribute((unused
)) **vec
,
761 int attribute((unused
)) nvec
) {
762 enable_random(c
->who
, c
->ev
);
763 /* Enable implicitly unpauses if there is nothing playing */
764 if(paused
&& !playing
) resume_playing(c
->who
);
765 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
766 return 1; /* completed */
769 static int c_random_disable(struct conn
*c
,
770 char attribute((unused
)) **vec
,
771 int attribute((unused
)) nvec
) {
772 disable_random(c
->who
);
773 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
774 return 1; /* completed */
777 static int c_random_enabled(struct conn
*c
,
778 char attribute((unused
)) **vec
,
779 int attribute((unused
)) nvec
) {
780 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
781 return 1; /* completed */
784 static void got_stats(char *stats
, void *u
) {
785 struct conn
*const c
= u
;
787 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
788 /* Now we can start processing commands again */
789 ev_reader_enable(c
->r
);
792 static int c_stats(struct conn
*c
,
793 char attribute((unused
)) **vec
,
794 int attribute((unused
)) nvec
) {
795 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
796 return 0; /* not yet complete */
799 static int c_volume(struct conn
*c
,
811 l
= r
= atoi(vec
[0]);
822 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
823 if(!(c
->rights
& rights
)) {
824 error(0, "%s attempted to set volume but lacks required rights", c
->who
);
825 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
828 if(mixer_control(-1/*as configured*/, &l
, &r
, set
))
829 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
831 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
832 if(l
!= volume_left
|| r
!= volume_right
) {
835 snprintf(lb
, sizeof lb
, "%d", l
);
836 snprintf(rb
, sizeof rb
, "%d", r
);
837 eventlog("volume", lb
, rb
, (char *)0);
843 /** @brief Called when data arrives on a log connection
845 * We just discard all such data. The client may occasionally send data as a
848 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
850 void attribute((unused
)) *ptr
,
852 int attribute((unused
)) eof
,
853 void attribute((unused
)) *u
) {
856 ev_reader_consume(reader
, bytes
);
858 /* Oops, that's all for now */
859 D(("logging reader eof"));
862 ev_writer_close(c
->w
);
866 remove_connection(c
);
871 static void logclient(const char *msg
, void *user
) {
872 struct conn
*c
= user
;
875 /* This connection has gone up in smoke for some reason */
876 eventlog_remove(c
->lo
);
880 /* user_* messages are restricted */
881 if(!strncmp(msg
, "user_", 5)) {
882 /* They are only sent to admin users */
883 if(!(c
->rights
& RIGHT_ADMIN
))
885 /* They are not sent over TCP connections unless remote user-management is
887 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
))
890 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
891 (uintmax_t)time(0), msg
);
894 static int c_log(struct conn
*c
,
895 char attribute((unused
)) **vec
,
896 int attribute((unused
)) nvec
) {
899 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
900 /* pump out initial state */
902 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
904 playing_is_enabled() ?
"enable_play" : "disable_play");
905 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
907 random_is_enabled() ?
"enable_random" : "disable_random");
908 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
910 paused ?
"pause" : "resume");
912 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
915 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
916 (uintmax_t)now
, volume_left
, volume_right
);
917 c
->lo
= xmalloc(sizeof *c
->lo
);
918 c
->lo
->fn
= logclient
;
921 c
->reader
= logging_reader_callback
;
925 /** @brief Test whether a move is allowed
926 * @param c Connection
927 * @param qs List of IDs on queue
928 * @param nqs Number of IDs
929 * @return 0 if move is prohibited, non-0 if it is allowed
931 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
932 for(; nqs
> 0; ++qs
, --nqs
) {
933 struct queue_entry
*const q
= *qs
;
935 if(!right_movable(c
->rights
, c
->who
, q
))
941 static int c_move(struct conn
*c
,
943 int attribute((unused
)) nvec
) {
944 struct queue_entry
*q
;
947 if(!(q
= queue_find(vec
[0]))) {
948 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
951 if(!has_move_rights(c
, &q
, 1)) {
952 error(0, "%s attempted move but lacks required rights", c
->who
);
953 sink_writes(ev_writer_sink(c
->w
),
954 "510 Not authorized to move that track\n");
957 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
958 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
959 /* If we've moved to the head of the queue then prepare the track. */
965 static int c_moveafter(struct conn
*c
,
967 int attribute((unused
)) nvec
) {
968 struct queue_entry
*q
, **qs
;
972 if(!(q
= queue_find(vec
[0]))) {
973 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
980 qs
= xcalloc(nvec
, sizeof *qs
);
981 for(n
= 0; n
< nvec
; ++n
)
982 if(!(qs
[n
] = queue_find(vec
[n
]))) {
983 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
986 if(!has_move_rights(c
, qs
, nvec
)) {
987 error(0, "%s attempted moveafter but lacks required rights", c
->who
);
988 sink_writes(ev_writer_sink(c
->w
),
989 "510 Not authorized to move those tracks\n");
992 queue_moveafter(q
, nvec
, qs
, c
->who
);
993 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
994 /* If we've moved to the head of the queue then prepare the track. */
1000 static int c_part(struct conn
*c
,
1002 int attribute((unused
)) nvec
) {
1005 if(!(track
= trackdb_resolve(vec
[0]))) {
1006 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1009 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1010 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1014 static int c_resolve(struct conn
*c
,
1016 int attribute((unused
)) nvec
) {
1019 if(!(track
= trackdb_resolve(vec
[0]))) {
1020 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1023 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1027 static int c_tags(struct conn
*c
,
1028 char attribute((unused
)) **vec
,
1029 int attribute((unused
)) nvec
) {
1030 char **tags
= trackdb_alltags();
1032 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
1034 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1035 **tags
== '.' ?
"." : "", *tags
);
1038 sink_writes(ev_writer_sink(c
->w
), ".\n");
1039 return 1; /* completed */
1042 static int c_set_global(struct conn
*c
,
1044 int attribute((unused
)) nvec
) {
1045 if(vec
[0][0] == '_') {
1046 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1049 trackdb_set_global(vec
[0], vec
[1], c
->who
);
1050 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1054 static int c_get_global(struct conn
*c
,
1056 int attribute((unused
)) nvec
) {
1057 const char *s
= trackdb_get_global(vec
[0]);
1060 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1062 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1066 static int c_nop(struct conn
*c
,
1067 char attribute((unused
)) **vec
,
1068 int attribute((unused
)) nvec
) {
1069 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1073 static int c_new(struct conn
*c
,
1083 if(max
<= 0 || max
> config
->new_max
)
1084 max
= config
->new_max
;
1085 tracks
= trackdb_new(0, max
);
1086 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1089 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1090 **tracks
== '.' ?
"." : "", *tracks
);
1093 sink_writes(ev_writer_sink(c
->w
), ".\n");
1094 return 1; /* completed */
1098 static int c_rtp_address(struct conn
*c
,
1099 char attribute((unused
)) **vec
,
1100 int attribute((unused
)) nvec
) {
1101 if(config
->api
== BACKEND_NETWORK
) {
1102 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1103 quoteutf8(config
->broadcast
.s
[0]),
1104 quoteutf8(config
->broadcast
.s
[1]));
1106 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1110 static int c_cookie(struct conn
*c
,
1112 int attribute((unused
)) nvec
) {
1117 /* Can't log in twice on the same connection */
1119 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1122 /* Get some kind of peer identifcation */
1123 if(!(host
= connection_host(c
))) {
1124 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1127 /* Check the cookie */
1128 user
= verify_cookie(vec
[0], &rights
);
1130 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1137 if(strcmp(host
, "local"))
1138 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1140 c
->rights
|= RIGHT__LOCAL
;
1141 /* Response contains username so client knows who they are acting as */
1142 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1146 static int c_make_cookie(struct conn
*c
,
1147 char attribute((unused
)) **vec
,
1148 int attribute((unused
)) nvec
) {
1149 const char *cookie
= make_cookie(c
->who
);
1152 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1154 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1158 static int c_revoke(struct conn
*c
,
1159 char attribute((unused
)) **vec
,
1160 int attribute((unused
)) nvec
) {
1162 revoke_cookie(c
->cookie
);
1163 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1165 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1169 static int c_adduser(struct conn
*c
,
1174 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1175 error(0, "S%x: remote adduser", c
->tag
);
1176 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1181 if(parse_rights(vec
[2], 0, 1)) {
1182 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1186 rights
= config
->default_rights
;
1187 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1188 0/*email*/, 0/*confirmation*/))
1189 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1191 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1195 static int c_deluser(struct conn
*c
,
1197 int attribute((unused
)) nvec
) {
1200 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1201 error(0, "S%x: remote deluser", c
->tag
);
1202 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1205 if(trackdb_deluser(vec
[0])) {
1206 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1209 /* Zap connections belonging to deleted user */
1210 for(d
= connections
; d
; d
= d
->next
)
1211 if(!strcmp(d
->who
, vec
[0]))
1213 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1217 static int c_edituser(struct conn
*c
,
1219 int attribute((unused
)) nvec
) {
1222 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1223 error(0, "S%x: remote edituser", c
->tag
);
1224 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1227 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1228 * address and password. */
1229 if((c
->rights
& RIGHT_ADMIN
)
1230 || (!strcmp(c
->who
, vec
[0])
1231 && (!strcmp(vec
[1], "email")
1232 || !strcmp(vec
[1], "password")))) {
1233 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1234 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1237 if(!strcmp(vec
[1], "password")) {
1238 /* Zap all connections for this user after a password change */
1239 for(d
= connections
; d
; d
= d
->next
)
1240 if(!strcmp(d
->who
, vec
[0]))
1242 } else if(!strcmp(vec
[1], "rights")) {
1243 /* Update rights for this user */
1246 if(!parse_rights(vec
[2], &r
, 1)) {
1247 const char *new_rights
= rights_string(r
);
1248 for(d
= connections
; d
; d
= d
->next
) {
1249 if(!strcmp(d
->who
, vec
[0])) {
1252 /* Notify any log connections */
1254 sink_printf(ev_writer_sink(d
->w
),
1255 "%"PRIxMAX
" rights_changed %s\n",
1257 quoteutf8(new_rights
));
1262 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1264 error(0, "%s attempted edituser but lacks required rights", c
->who
);
1265 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1270 static int c_userinfo(struct conn
*c
,
1271 char attribute((unused
)) **vec
,
1272 int attribute((unused
)) nvec
) {
1276 /* We allow remote querying of rights so that clients can figure out what
1277 * they're allowed to do */
1278 if(!config
->remote_userman
1279 && !(c
->rights
& RIGHT__LOCAL
)
1280 && strcmp(vec
[1], "rights")) {
1281 error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1282 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1285 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1286 * address and rights list. */
1287 if((c
->rights
& RIGHT_ADMIN
)
1288 || (!strcmp(c
->who
, vec
[0])
1289 && (!strcmp(vec
[1], "email")
1290 || !strcmp(vec
[1], "rights")))) {
1291 if((k
= trackdb_getuserinfo(vec
[0])))
1292 if((value
= kvp_get(k
, vec
[1])))
1293 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1295 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1297 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1299 error(0, "%s attempted userinfo but lacks required rights", c
->who
);
1300 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1305 static int c_users(struct conn
*c
,
1306 char attribute((unused
)) **vec
,
1307 int attribute((unused
)) nvec
) {
1308 /* TODO de-dupe with c_tags */
1309 char **users
= trackdb_listusers();
1311 sink_writes(ev_writer_sink(c
->w
), "253 User list follows\n");
1313 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1314 **users
== '.' ?
"." : "", *users
);
1317 sink_writes(ev_writer_sink(c
->w
), ".\n");
1318 return 1; /* completed */
1321 /** @brief Base64 mapping table for confirmation strings
1323 * This is used with generic_to_base64() and generic_base64(). We cannot use
1324 * the MIME table as that contains '+' and '=' which get quoted when
1325 * URL-encoding. (The CGI still does the URL encoding but it is desirable to
1326 * avoid it being necessary.)
1328 static const char confirm_base64_table
[] =
1329 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*";
1331 static int c_register(struct conn
*c
,
1333 int attribute((unused
)) nvec
) {
1338 /* The confirmation string is base64(username;nonce) */
1339 bufsize
= strlen(vec
[0]) + CONFIRM_SIZE
+ 2;
1340 buf
= xmalloc_noptr(bufsize
);
1341 offset
= byte_snprintf(buf
, bufsize
, "%s;", vec
[0]);
1342 gcry_randomize(buf
+ offset
, CONFIRM_SIZE
, GCRY_STRONG_RANDOM
);
1343 cs
= generic_to_base64((uint8_t *)buf
, offset
+ CONFIRM_SIZE
,
1344 confirm_base64_table
);
1345 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1346 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1348 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1352 static int c_confirm(struct conn
*c
,
1354 int attribute((unused
)) nvec
) {
1360 /* Get some kind of peer identifcation */
1361 if(!(host
= connection_host(c
))) {
1362 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1365 if(!(user
= generic_base64(vec
[0], &nuser
, confirm_base64_table
))
1366 || !(sep
= memchr(user
, ';', nuser
))) {
1367 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1371 if(trackdb_confirm(user
, vec
[0], &rights
))
1372 sink_writes(ev_writer_sink(c
->w
), "550 Incorrect confirmation string\n");
1377 if(strcmp(host
, "local"))
1378 info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1380 c
->rights
|= RIGHT__LOCAL
;
1381 /* Response contains username so client knows who they are acting as */
1382 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1387 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1388 pid_t
attribute((unused
)) pid
,
1390 const struct rusage
attribute((unused
)) *rusage
,
1392 struct conn
*const c
= u
;
1394 /* Tell the client what went down */
1396 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1398 error(0, "reminder subprocess %s", wstat(status
));
1399 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1401 /* Re-enable this connection */
1402 ev_reader_enable(c
->r
);
1406 static int c_reminder(struct conn
*c
,
1408 int attribute((unused
)) nvec
) {
1410 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1415 static hash
*last_reminder
;
1417 if(!config
->mail_sender
) {
1418 error(0, "cannot send password reminders because mail_sender not set");
1419 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1422 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1423 error(0, "reminder for user '%s' who does not exist", vec
[0]);
1424 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1427 if(!(email
= kvp_get(k
, "email"))
1428 || !email_valid(email
)) {
1429 error(0, "user '%s' has no valid email address", vec
[0]);
1430 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1433 if(!(password
= kvp_get(k
, "password"))
1435 error(0, "user '%s' has no password", vec
[0]);
1436 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1439 /* Rate-limit reminders. This hash is bounded in size by the number of
1440 * users. If this is actually a problem for anyone then we can periodically
1443 last_reminder
= hash_new(sizeof (time_t));
1444 last
= hash_find(last_reminder
, vec
[0]);
1446 if(last
&& now
< *last
+ config
->reminder_interval
) {
1447 error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1448 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1451 /* Send the reminder */
1452 /* TODO this should be templatized and to some extent merged with
1453 * the code in act_register() */
1454 byte_xasprintf((char **)&text
,
1455 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1456 "Your password is:\n"
1459 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1460 fatal(0, "cannot encode email");
1461 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1462 quote822(charset
, 0));
1463 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1464 "DisOrder password reminder",
1465 encoding
, content_type
, text
);
1467 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1470 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1471 info("sending a passsword reminder to user '%s'", vec
[0]);
1472 /* We can only continue when the subprocess finishes */
1473 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1477 static int c_schedule_list(struct conn
*c
,
1478 char attribute((unused
)) **vec
,
1479 int attribute((unused
)) nvec
) {
1480 char **ids
= schedule_list(0);
1481 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1483 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1484 sink_writes(ev_writer_sink(c
->w
), ".\n");
1485 return 1; /* completed */
1488 static int c_schedule_get(struct conn
*c
,
1490 int attribute((unused
)) nvec
) {
1491 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1494 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1495 return 1; /* completed */
1497 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1499 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1500 for(k
= actiondata
; k
; k
= k
->next
)
1501 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1502 quoteutf8(k
->name
), quoteutf8(k
->value
));
1503 sink_writes(ev_writer_sink(c
->w
), ".\n");
1504 return 1; /* completed */
1507 static int c_schedule_del(struct conn
*c
,
1509 int attribute((unused
)) nvec
) {
1510 struct kvp
*actiondata
= schedule_get(vec
[0]);
1513 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1514 return 1; /* completed */
1516 /* If you have admin rights you can delete anything. If you don't then you
1517 * can only delete your own scheduled events. */
1518 if(!(c
->rights
& RIGHT_ADMIN
)) {
1519 const char *who
= kvp_get(actiondata
, "who");
1521 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1522 sink_writes(ev_writer_sink(c
->w
), "551 Not authorized\n");
1523 return 1; /* completed */
1526 if(schedule_del(vec
[0]))
1527 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1529 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1530 return 1; /* completed */
1533 static int c_schedule_add(struct conn
*c
,
1536 struct kvp
*actiondata
= 0;
1539 /* Standard fields */
1540 kvp_set(&actiondata
, "who", c
->who
);
1541 kvp_set(&actiondata
, "when", vec
[0]);
1542 kvp_set(&actiondata
, "priority", vec
[1]);
1543 kvp_set(&actiondata
, "action", vec
[2]);
1544 /* Action-dependent fields */
1545 if(!strcmp(vec
[2], "play")) {
1547 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1550 if(!trackdb_exists(vec
[3])) {
1551 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1554 kvp_set(&actiondata
, "track", vec
[3]);
1555 } else if(!strcmp(vec
[2], "set-global")) {
1556 if(nvec
< 4 || nvec
> 5) {
1557 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1560 kvp_set(&actiondata
, "key", vec
[3]);
1562 kvp_set(&actiondata
, "value", vec
[4]);
1564 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1567 /* schedule_add() checks user rights */
1568 id
= schedule_add(c
->ev
, actiondata
);
1570 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1572 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1576 static int c_adopt(struct conn
*c
,
1578 int attribute((unused
)) nvec
) {
1579 struct queue_entry
*q
;
1582 sink_writes(ev_writer_sink(c
->w
), "550 no identity\n");
1585 if(!(q
= queue_find(vec
[0]))) {
1586 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1589 if(q
->origin
!= origin_random
) {
1590 sink_writes(ev_writer_sink(c
->w
), "550 not a random track\n");
1593 q
->origin
= origin_adopted
;
1594 q
->submitter
= xstrdup(c
->who
);
1595 eventlog("adopted", q
->id
, q
->submitter
, (char *)0);
1597 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1601 static const struct command
{
1602 /** @brief Command name */
1605 /** @brief Minimum number of arguments */
1608 /** @brief Maximum number of arguments */
1611 /** @brief Function to process command */
1612 int (*fn
)(struct conn
*, char **, int);
1614 /** @brief Rights required to execute command
1616 * 0 means that the command can be issued without logging in. If multiple
1617 * bits are listed here any of those rights will do.
1621 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1622 { "adopt", 1, 1, c_adopt
, RIGHT_PLAY
},
1623 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1624 { "confirm", 1, 1, c_confirm
, 0 },
1625 { "cookie", 1, 1, c_cookie
, 0 },
1626 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1627 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1628 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1629 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1630 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1631 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1632 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1633 { "files", 0, 2, c_files
, RIGHT_READ
},
1634 { "get", 2, 2, c_get
, RIGHT_READ
},
1635 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1636 { "length", 1, 1, c_length
, RIGHT_READ
},
1637 { "log", 0, 0, c_log
, RIGHT_READ
},
1638 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1639 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1640 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1641 { "new", 0, 1, c_new
, RIGHT_READ
},
1642 { "nop", 0, 0, c_nop
, 0 },
1643 { "part", 3, 3, c_part
, RIGHT_READ
},
1644 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1645 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1646 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1647 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1648 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1649 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1650 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1651 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1652 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1653 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1654 { "register", 3, 3, c_register
, RIGHT_REGISTER
|RIGHT__LOCAL
},
1655 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1656 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1657 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1658 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1659 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1660 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1661 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1662 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1663 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1664 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1665 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1666 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1667 { "search", 1, 1, c_search
, RIGHT_READ
},
1668 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1669 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1670 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1671 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1672 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1673 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1674 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1675 { "user", 2, 2, c_user
, 0 },
1676 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1677 { "users", 0, 0, c_users
, RIGHT_READ
},
1678 { "version", 0, 0, c_version
, RIGHT_READ
},
1679 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1682 static void command_error(const char *msg
, void *u
) {
1685 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1688 /* process a command. Return 1 if complete, 0 if incomplete. */
1689 static int command(struct conn
*c
, char *line
) {
1693 D(("server command %s", line
));
1694 /* We force everything into NFC as early as possible */
1695 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1696 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1699 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1700 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1704 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1707 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
1708 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1710 if(commands
[n
].rights
1711 && !(c
->rights
& commands
[n
].rights
)) {
1712 error(0, "%s attempted %s but lacks required rights", c
->who ? c
->who
: "NULL",
1714 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
1719 if(nvec
< commands
[n
].minargs
) {
1720 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1723 if(nvec
> commands
[n
].maxargs
) {
1724 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1727 return commands
[n
].fn(c
, vec
, nvec
);
1729 return 1; /* completed */
1732 /* redirect to the right reader callback for our current state */
1733 static int redirect_reader_callback(ev_source
*ev
,
1741 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1744 /* the main command reader */
1745 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1755 D(("server reader_callback"));
1756 while((eol
= memchr(ptr
, '\n', bytes
))) {
1758 ev_reader_consume(reader
, eol
- (char *)ptr
);
1759 complete
= command(c
, ptr
);
1760 bytes
-= (eol
- (char *)ptr
);
1763 /* the command had better have set a new reader callback */
1765 /* there are further bytes to read, or we are at eof; arrange for the
1766 * command's reader callback to handle them */
1767 return ev_reader_incomplete(reader
);
1768 /* nothing's going on right now */
1771 /* command completed, we can go around and handle the next one */
1775 error(0, "S%x unterminated line", c
->tag
);
1776 D(("normal reader close"));
1779 D(("close associated writer"));
1780 ev_writer_close(c
->w
);
1783 remove_connection(c
);
1788 static int listen_callback(ev_source
*ev
,
1790 const struct sockaddr
attribute((unused
)) *remote
,
1791 socklen_t
attribute((unused
)) rlen
,
1793 const struct listener
*l
= u
;
1794 struct conn
*c
= xmalloc(sizeof *c
);
1795 static unsigned tags
;
1797 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1800 c
->next
= connections
;
1803 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1805 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1809 c
->reader
= reader_callback
;
1813 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1814 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
1816 config
->authorization_algorithm
,
1817 hex(c
->nonce
, sizeof c
->nonce
));
1821 int server_start(ev_source
*ev
, int pf
,
1822 size_t socklen
, const struct sockaddr
*sa
,
1825 struct listener
*l
= xmalloc(sizeof *l
);
1826 static const int one
= 1;
1828 D(("server_init socket %s", name
));
1829 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1830 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1831 if(bind(fd
, sa
, socklen
) < 0) {
1832 error(errno
, "error binding to %s", name
);
1840 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1845 int server_stop(ev_source
*ev
, int fd
) {
1847 return ev_listen_cancel(ev
, fd
);