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 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
21 #include "disorder-server.h"
24 # define NONCE_SIZE 16
28 # define CONFIRM_SIZE 10
31 int volume_left
, volume_right
; /* last known volume */
33 /** @brief Accept all well-formed login attempts
44 /** @brief One client connection */
46 /** @brief Read commands from here */
48 /** @brief Send responses to here */
50 /** @brief Underlying file descriptor */
52 /** @brief Unique identifier for connection used in log messages */
54 /** @brief Login name or NULL */
56 /** @brief Event loop */
58 /** @brief Nonce chosen for this connection */
59 unsigned char nonce
[NONCE_SIZE
];
60 /** @brief Current reader callback
62 * We change this depending on whether we're servicing the @b log command
64 ev_reader_callback
*reader
;
65 /** @brief Event log output sending to this connection */
66 struct eventlog_output
*lo
;
67 /** @brief Parent listener */
68 const struct listener
*l
;
69 /** @brief Login cookie or NULL */
71 /** @brief Connection rights */
73 /** @brief Next connection */
75 /** @brief True if pending rescan had 'wait' set */
79 /** @brief Linked list of connections */
80 static struct conn
*connections
;
82 static int reader_callback(ev_source
*ev
,
89 static const char *noyes
[] = { "no", "yes" };
91 /** @brief Remove a connection from the connection list */
92 static void remove_connection(struct conn
*c
) {
95 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
101 /** @brief Called when a connection's writer fails or is shut down
103 * If the connection still has a raeder that is cancelled.
105 static int writer_error(ev_source
attribute((unused
)) *ev
,
110 D(("server writer_error S%x %d", c
->tag
, errno_value
));
111 if(errno_value
== 0) {
113 D(("S%x writer completed", c
->tag
));
115 if(errno_value
!= EPIPE
)
116 error(errno_value
, "S%x write error on socket", c
->tag
);
118 D(("cancel reader"));
119 ev_reader_cancel(c
->r
);
122 D(("done cancel reader"));
126 remove_connection(c
);
130 /** @brief Called when a conncetion's reader fails or is shut down
132 * If connection still has a writer then it is closed.
134 static int reader_error(ev_source
attribute((unused
)) *ev
,
139 D(("server reader_error S%x %d", c
->tag
, errno_value
));
140 error(errno_value
, "S%x read error on socket", c
->tag
);
142 ev_writer_close(c
->w
);
146 remove_connection(c
);
150 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
152 disable_playing(c
->who
);
153 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
154 disable_playing(c
->who
);
156 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
157 return 1; /* completed */
159 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
160 return 1; /* completed */
163 static int c_enable(struct conn
*c
,
164 char attribute((unused
)) **vec
,
165 int attribute((unused
)) nvec
) {
166 enable_playing(c
->who
, c
->ev
);
167 /* Enable implicitly unpauses if there is nothing playing */
168 if(paused
&& !playing
) resume_playing(c
->who
);
169 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
170 return 1; /* completed */
173 static int c_enabled(struct conn
*c
,
174 char attribute((unused
)) **vec
,
175 int attribute((unused
)) nvec
) {
176 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
177 return 1; /* completed */
180 static int c_play(struct conn
*c
, char **vec
,
181 int attribute((unused
)) nvec
) {
183 struct queue_entry
*q
;
185 if(!trackdb_exists(vec
[0])) {
186 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
189 if(!(track
= trackdb_resolve(vec
[0]))) {
190 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
193 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
195 /* If we added the first track, and something is playing, then prepare the
196 * new track. If nothing is playing then we don't bother as it wouldn't gain
198 if(q
== qhead
.next
&& playing
)
200 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
201 /* If the queue was empty but we are for some reason paused then
203 if(!playing
) resume_playing(0);
205 return 1; /* completed */
208 static int c_remove(struct conn
*c
, char **vec
,
209 int attribute((unused
)) nvec
) {
210 struct queue_entry
*q
;
212 if(!(q
= queue_find(vec
[0]))) {
213 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
216 if(!right_removable(c
->rights
, c
->who
, q
)) {
217 error(0, "%s attempted remove but lacks required rights", c
->who
);
218 sink_writes(ev_writer_sink(c
->w
),
219 "510 Not authorized to remove that track\n");
222 queue_remove(q
, c
->who
);
223 /* De-prepare the track. */
225 /* See about adding a new random track */
226 add_random_track(c
->ev
);
227 /* Prepare whatever the next head track is. */
228 if(qhead
.next
!= &qhead
)
229 prepare(c
->ev
, qhead
.next
);
231 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
232 return 1; /* completed */
235 static int c_scratch(struct conn
*c
,
239 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
240 return 1; /* completed */
242 /* TODO there is a bug here: if we specify an ID but it's not the currently
243 * playing track then you will get 550 if you weren't authorized to scratch
244 * the currently playing track. */
245 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
246 error(0, "%s attempted scratch but lacks required rights", c
->who
);
247 sink_writes(ev_writer_sink(c
->w
),
248 "510 Not authorized to scratch that track\n");
251 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
252 /* If you scratch an unpaused track then it is automatically unpaused */
254 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
255 return 1; /* completed */
258 static int c_pause(struct conn
*c
,
259 char attribute((unused
)) **vec
,
260 int attribute((unused
)) nvec
) {
262 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
263 return 1; /* completed */
266 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
267 return 1; /* completed */
269 if(pause_playing(c
->who
) < 0)
270 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
272 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
276 static int c_resume(struct conn
*c
,
277 char attribute((unused
)) **vec
,
278 int attribute((unused
)) nvec
) {
280 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
281 return 1; /* completed */
283 resume_playing(c
->who
);
284 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
288 static int c_shutdown(struct conn
*c
,
289 char attribute((unused
)) **vec
,
290 int attribute((unused
)) nvec
) {
291 info("S%x shut down by %s", c
->tag
, c
->who
);
292 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
293 ev_writer_flush(c
->w
);
297 static int c_reconfigure(struct conn
*c
,
298 char attribute((unused
)) **vec
,
299 int attribute((unused
)) nvec
) {
300 info("S%x reconfigure by %s", c
->tag
, c
->who
);
301 if(reconfigure(c
->ev
, 1))
302 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
304 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
305 return 1; /* completed */
308 static void finished_rescan(void *ru
) {
309 struct conn
*const c
= ru
;
311 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
312 /* Turn this connection back on */
313 ev_reader_enable(c
->r
);
316 static void start_fresh_rescan(void *ru
) {
317 struct conn
*const c
= ru
;
319 if(trackdb_rescan_underway()) {
320 /* Some other waiter beat us to it. However in this case we're happy to
321 * piggyback; the requirement is that a new rescan be started, not that it
322 * was _our_ rescan. */
324 /* We block until the rescan completes */
325 trackdb_add_rescanned(finished_rescan
, c
);
327 /* We report that the new rescan has started */
328 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
329 /* Turn this connection back on */
330 ev_reader_enable(c
->r
);
333 /* We are the first connection to get a callback so we must start a
336 /* We want to block until the new rescan completes */
337 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
339 /* We can report back immediately */
340 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
341 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
342 /* Turn this connection back on */
343 ev_reader_enable(c
->r
);
348 static int c_rescan(struct conn
*c
,
351 int flag_wait
= 0, flag_fresh
= 0, n
;
354 for(n
= 0; n
< nvec
; ++n
) {
355 if(!strcmp(vec
[n
], "wait"))
356 flag_wait
= 1; /* wait for rescan to complete */
358 /* Currently disabled because untested (and hard to test). */
359 else if(!strcmp(vec
[n
], "fresh"))
360 flag_fresh
= 1; /* don't piggyback underway rescan */
363 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
364 return 1; /* completed */
367 /* Report what was requested */
368 info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
369 flag_wait ?
"wait" : "",
370 flag_fresh ?
"fresh" : "");
371 if(trackdb_rescan_underway()) {
373 /* We want a fresh rescan but there is already one underway. Arrange a
374 * callback when it completes and then set off a new one. */
375 c
->rescan_wait
= flag_wait
;
376 trackdb_add_rescanned(start_fresh_rescan
, c
);
380 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
384 /* There's a rescan underway, and it's acceptable to piggyback on it */
386 /* We want to block until completion. */
387 trackdb_add_rescanned(finished_rescan
, c
);
390 /* We don't want to block. So we just report that things are in
392 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
397 /* No rescan is underway. fresh is therefore irrelevant. */
399 /* We want to block until completion */
400 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
403 /* We don't want to block. */
404 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
405 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
406 return 1; /* completed */
411 static int c_version(struct conn
*c
,
412 char attribute((unused
)) **vec
,
413 int attribute((unused
)) nvec
) {
414 /* VERSION had better only use the basic character set */
415 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
416 return 1; /* completed */
419 static int c_playing(struct conn
*c
,
420 char attribute((unused
)) **vec
,
421 int attribute((unused
)) nvec
) {
423 queue_fix_sofar(playing
);
424 playing
->expected
= 0;
425 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
427 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
428 return 1; /* completed */
431 static const char *connection_host(struct conn
*c
) {
434 struct sockaddr_in in
;
435 struct sockaddr_in6 in6
;
441 /* get connection data */
443 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
444 error(errno
, "S%x error calling getpeername", c
->tag
);
447 if(c
->l
->pf
!= PF_UNIX
) {
448 if((n
= getnameinfo(&u
.sa
, l
,
449 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
450 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
453 return xstrdup(host
);
458 static int c_user(struct conn
*c
,
460 int attribute((unused
)) nvec
) {
462 const char *res
, *host
, *password
;
466 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
469 /* get connection data */
470 if(!(host
= connection_host(c
))) {
471 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
475 k
= trackdb_getuserinfo(vec
[0]);
476 /* reject nonexistent users */
478 error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
479 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
482 /* reject unconfirmed users */
483 if(kvp_get(k
, "confirmation")) {
484 error(0, "S%x unconfirmed user '%s' from %s", c
->tag
, vec
[0], host
);
485 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
488 password
= kvp_get(k
, "password");
489 if(!password
) password
= "";
490 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
491 error(0, "error parsing rights for %s", vec
[0]);
492 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
495 /* check whether the response is right */
496 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
497 config
->authorization_algorithm
);
498 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
501 /* currently we only bother logging remote connections */
502 if(strcmp(host
, "local"))
503 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
505 c
->rights
|= RIGHT__LOCAL
;
506 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
509 /* oops, response was wrong */
510 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
511 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
515 static int c_recent(struct conn
*c
,
516 char attribute((unused
)) **vec
,
517 int attribute((unused
)) nvec
) {
518 const struct queue_entry
*q
;
520 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
521 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
522 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
523 sink_writes(ev_writer_sink(c
->w
), ".\n");
524 return 1; /* completed */
527 static int c_queue(struct conn
*c
,
528 char attribute((unused
)) **vec
,
529 int attribute((unused
)) nvec
) {
530 struct queue_entry
*q
;
535 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
536 if(playing_is_enabled() && !paused
) {
538 queue_fix_sofar(playing
);
539 if((l
= trackdb_get(playing
->track
, "_length"))
540 && (length
= atol(l
))) {
542 when
+= length
- playing
->sofar
+ config
->gap
;
545 /* Nothing is playing but playing is enabled, so whatever is
546 * first in the queue can be expected to start immediately. */
549 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
550 /* fill in estimated start time */
552 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
553 /* update for next track */
555 if((l
= trackdb_get(q
->track
, "_length"))
556 && (length
= atol(l
)))
557 when
+= length
+ config
->gap
;
562 sink_writes(ev_writer_sink(c
->w
), ".\n");
563 return 1; /* completed */
566 static int output_list(struct conn
*c
, char **vec
) {
568 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
569 sink_writes(ev_writer_sink(c
->w
), ".\n");
573 static int files_dirs(struct conn
*c
,
576 enum trackdb_listable what
) {
577 const char *dir
, *re
, *errstr
;
583 case 0: dir
= 0; re
= 0; break;
584 case 1: dir
= vec
[0]; re
= 0; break;
585 case 2: dir
= vec
[0]; re
= vec
[1]; break;
588 /* A bit of a bodge to make sure the args don't trample on cache keys */
589 if(dir
&& strchr(dir
, '\n')) {
590 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
593 if(re
&& strchr(re
, '\n')) {
594 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
597 /* We bother eliminating "" because the web interface is relatively
598 * likely to send it */
600 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
601 fvec
= (char **)cache_get(&cache_files_type
, key
);
603 /* Got a cache hit, don't store the answer in the cache */
606 rec
= 0; /* quieten compiler */
608 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
610 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
611 &errstr
, &erroffset
, 0))) {
612 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
616 /* It only counts as a miss if the regexp was valid. */
617 ++cache_files_misses
;
620 /* No regexp, don't bother caching the result */
626 /* No cache hit (either because a miss, or because we did not look) so do
629 fvec
= trackdb_list(dir
, 0, what
, rec
);
631 fvec
= trackdb_list(0, 0, what
, rec
);
634 /* Put the answer in the cache */
635 cache_put(&cache_files_type
, key
, fvec
);
636 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
637 return output_list(c
, fvec
);
640 static int c_files(struct conn
*c
,
643 return files_dirs(c
, vec
, nvec
, trackdb_files
);
646 static int c_dirs(struct conn
*c
,
649 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
652 static int c_allfiles(struct conn
*c
,
655 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
658 static int c_get(struct conn
*c
,
660 int attribute((unused
)) nvec
) {
661 const char *v
, *track
;
663 if(!(track
= trackdb_resolve(vec
[0]))) {
664 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
667 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
668 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
670 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
674 static int c_length(struct conn
*c
,
676 int attribute((unused
)) nvec
) {
677 const char *track
, *v
;
679 if(!(track
= trackdb_resolve(vec
[0]))) {
680 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
683 if((v
= trackdb_get(track
, "_length")))
684 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
686 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
690 static int c_set(struct conn
*c
,
692 int attribute((unused
)) nvec
) {
695 if(!(track
= trackdb_resolve(vec
[0]))) {
696 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
699 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
700 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
702 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
706 static int c_prefs(struct conn
*c
,
708 int attribute((unused
)) nvec
) {
712 if(!(track
= trackdb_resolve(vec
[0]))) {
713 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
716 k
= trackdb_get_all(track
);
717 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
718 for(; k
; k
= k
->next
)
719 if(k
->name
[0] != '_') /* omit internal values */
720 sink_printf(ev_writer_sink(c
->w
),
721 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
722 sink_writes(ev_writer_sink(c
->w
), ".\n");
726 static int c_exists(struct conn
*c
,
728 int attribute((unused
)) nvec
) {
729 /* trackdb_exists() does its own alias checking */
730 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
734 static void search_parse_error(const char *msg
, void *u
) {
735 *(const char **)u
= msg
;
738 static int c_search(struct conn
*c
,
740 int attribute((unused
)) nvec
) {
741 char **terms
, **results
;
742 int nterms
, nresults
, n
;
743 const char *e
= "unknown error";
745 /* This is a bit of a bodge. Initially it's there to make the eclient
746 * interface a bit more convenient to add searching to, but it has the more
747 * compelling advantage that if everything uses it, then interpretation of
748 * user-supplied search strings will be the same everywhere. */
749 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
750 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
752 results
= trackdb_search(terms
, nterms
, &nresults
);
753 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
754 for(n
= 0; n
< nresults
; ++n
)
755 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
756 sink_writes(ev_writer_sink(c
->w
), ".\n");
761 static int c_random_enable(struct conn
*c
,
762 char attribute((unused
)) **vec
,
763 int attribute((unused
)) nvec
) {
764 enable_random(c
->who
, c
->ev
);
765 /* Enable implicitly unpauses if there is nothing playing */
766 if(paused
&& !playing
) resume_playing(c
->who
);
767 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
768 return 1; /* completed */
771 static int c_random_disable(struct conn
*c
,
772 char attribute((unused
)) **vec
,
773 int attribute((unused
)) nvec
) {
774 disable_random(c
->who
);
775 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
776 return 1; /* completed */
779 static int c_random_enabled(struct conn
*c
,
780 char attribute((unused
)) **vec
,
781 int attribute((unused
)) nvec
) {
782 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
783 return 1; /* completed */
786 static void got_stats(char *stats
, void *u
) {
787 struct conn
*const c
= u
;
789 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
790 /* Now we can start processing commands again */
791 ev_reader_enable(c
->r
);
794 static int c_stats(struct conn
*c
,
795 char attribute((unused
)) **vec
,
796 int attribute((unused
)) nvec
) {
797 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
798 return 0; /* not yet complete */
801 static int c_volume(struct conn
*c
,
813 l
= r
= atoi(vec
[0]);
824 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
825 if(!(c
->rights
& rights
)) {
826 error(0, "%s attempted to set volume but lacks required rights", c
->who
);
827 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
830 if(mixer_control(-1/*as configured*/, &l
, &r
, set
))
831 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
833 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
834 if(l
!= volume_left
|| r
!= volume_right
) {
837 snprintf(lb
, sizeof lb
, "%d", l
);
838 snprintf(rb
, sizeof rb
, "%d", r
);
839 eventlog("volume", lb
, rb
, (char *)0);
845 /** @brief Called when data arrives on a log connection
847 * We just discard all such data. The client may occasionally send data as a
850 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
852 void attribute((unused
)) *ptr
,
854 int attribute((unused
)) eof
,
855 void attribute((unused
)) *u
) {
858 ev_reader_consume(reader
, bytes
);
860 /* Oops, that's all for now */
861 D(("logging reader eof"));
864 ev_writer_close(c
->w
);
868 remove_connection(c
);
873 static void logclient(const char *msg
, void *user
) {
874 struct conn
*c
= user
;
877 /* This connection has gone up in smoke for some reason */
878 eventlog_remove(c
->lo
);
881 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
882 (uintmax_t)time(0), msg
);
885 static int c_log(struct conn
*c
,
886 char attribute((unused
)) **vec
,
887 int attribute((unused
)) nvec
) {
890 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
891 /* pump out initial state */
893 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
895 playing_is_enabled() ?
"enable_play" : "disable_play");
896 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
898 random_is_enabled() ?
"enable_random" : "disable_random");
899 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
901 paused ?
"pause" : "resume");
903 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
906 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
907 (uintmax_t)now
, volume_left
, volume_right
);
908 c
->lo
= xmalloc(sizeof *c
->lo
);
909 c
->lo
->fn
= logclient
;
912 c
->reader
= logging_reader_callback
;
916 /** @brief Test whether a move is allowed
917 * @param c Connection
918 * @param qs List of IDs on queue
919 * @param nqs Number of IDs
920 * @return 0 if move is prohibited, non-0 if it is allowed
922 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
923 for(; nqs
> 0; ++qs
, --nqs
) {
924 struct queue_entry
*const q
= *qs
;
926 if(!right_movable(c
->rights
, c
->who
, q
))
932 static int c_move(struct conn
*c
,
934 int attribute((unused
)) nvec
) {
935 struct queue_entry
*q
;
938 if(!(q
= queue_find(vec
[0]))) {
939 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
942 if(!has_move_rights(c
, &q
, 1)) {
943 error(0, "%s attempted move but lacks required rights", c
->who
);
944 sink_writes(ev_writer_sink(c
->w
),
945 "510 Not authorized to move that track\n");
948 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
949 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
950 /* If we've moved to the head of the queue then prepare the track. */
956 static int c_moveafter(struct conn
*c
,
958 int attribute((unused
)) nvec
) {
959 struct queue_entry
*q
, **qs
;
963 if(!(q
= queue_find(vec
[0]))) {
964 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
971 qs
= xcalloc(nvec
, sizeof *qs
);
972 for(n
= 0; n
< nvec
; ++n
)
973 if(!(qs
[n
] = queue_find(vec
[n
]))) {
974 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
977 if(!has_move_rights(c
, qs
, nvec
)) {
978 error(0, "%s attempted moveafter but lacks required rights", c
->who
);
979 sink_writes(ev_writer_sink(c
->w
),
980 "510 Not authorized to move those tracks\n");
983 queue_moveafter(q
, nvec
, qs
, c
->who
);
984 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
985 /* If we've moved to the head of the queue then prepare the track. */
991 static int c_part(struct conn
*c
,
993 int attribute((unused
)) nvec
) {
996 if(!(track
= trackdb_resolve(vec
[0]))) {
997 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1000 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1001 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1005 static int c_resolve(struct conn
*c
,
1007 int attribute((unused
)) nvec
) {
1010 if(!(track
= trackdb_resolve(vec
[0]))) {
1011 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1014 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1018 static int c_tags(struct conn
*c
,
1019 char attribute((unused
)) **vec
,
1020 int attribute((unused
)) nvec
) {
1021 char **tags
= trackdb_alltags();
1023 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
1025 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1026 **tags
== '.' ?
"." : "", *tags
);
1029 sink_writes(ev_writer_sink(c
->w
), ".\n");
1030 return 1; /* completed */
1033 static int c_set_global(struct conn
*c
,
1035 int attribute((unused
)) nvec
) {
1036 if(vec
[0][0] == '_') {
1037 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1040 trackdb_set_global(vec
[0], vec
[1], c
->who
);
1041 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1045 static int c_get_global(struct conn
*c
,
1047 int attribute((unused
)) nvec
) {
1048 const char *s
= trackdb_get_global(vec
[0]);
1051 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1053 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1057 static int c_nop(struct conn
*c
,
1058 char attribute((unused
)) **vec
,
1059 int attribute((unused
)) nvec
) {
1060 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1064 static int c_new(struct conn
*c
,
1074 if(max
<= 0 || max
> config
->new_max
)
1075 max
= config
->new_max
;
1076 tracks
= trackdb_new(0, max
);
1077 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1080 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1081 **tracks
== '.' ?
"." : "", *tracks
);
1084 sink_writes(ev_writer_sink(c
->w
), ".\n");
1085 return 1; /* completed */
1089 static int c_rtp_address(struct conn
*c
,
1090 char attribute((unused
)) **vec
,
1091 int attribute((unused
)) nvec
) {
1092 if(config
->api
== BACKEND_NETWORK
) {
1093 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1094 quoteutf8(config
->broadcast
.s
[0]),
1095 quoteutf8(config
->broadcast
.s
[1]));
1097 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1101 static int c_cookie(struct conn
*c
,
1103 int attribute((unused
)) nvec
) {
1108 /* Can't log in twice on the same connection */
1110 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1113 /* Get some kind of peer identifcation */
1114 if(!(host
= connection_host(c
))) {
1115 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1118 /* Check the cookie */
1119 user
= verify_cookie(vec
[0], &rights
);
1121 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1128 if(strcmp(host
, "local"))
1129 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1131 c
->rights
|= RIGHT__LOCAL
;
1132 /* Response contains username so client knows who they are acting as */
1133 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1137 static int c_make_cookie(struct conn
*c
,
1138 char attribute((unused
)) **vec
,
1139 int attribute((unused
)) nvec
) {
1140 const char *cookie
= make_cookie(c
->who
);
1143 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1145 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1149 static int c_revoke(struct conn
*c
,
1150 char attribute((unused
)) **vec
,
1151 int attribute((unused
)) nvec
) {
1153 revoke_cookie(c
->cookie
);
1154 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1156 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1160 static int c_adduser(struct conn
*c
,
1165 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1166 error(0, "S%x: remote adduser", c
->tag
);
1167 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1172 if(parse_rights(vec
[2], 0, 1)) {
1173 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1177 rights
= config
->default_rights
;
1178 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1179 0/*email*/, 0/*confirmation*/))
1180 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1182 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1186 static int c_deluser(struct conn
*c
,
1188 int attribute((unused
)) nvec
) {
1191 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1192 error(0, "S%x: remote deluser", c
->tag
);
1193 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1196 if(trackdb_deluser(vec
[0])) {
1197 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1200 /* Zap connections belonging to deleted user */
1201 for(d
= connections
; d
; d
= d
->next
)
1202 if(!strcmp(d
->who
, vec
[0]))
1204 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1208 static int c_edituser(struct conn
*c
,
1210 int attribute((unused
)) nvec
) {
1213 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1214 error(0, "S%x: remote edituser", c
->tag
);
1215 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1218 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1219 * address and password. */
1220 if((c
->rights
& RIGHT_ADMIN
)
1221 || (!strcmp(c
->who
, vec
[0])
1222 && (!strcmp(vec
[1], "email")
1223 || !strcmp(vec
[1], "password")))) {
1224 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1225 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1228 if(!strcmp(vec
[1], "password")) {
1229 /* Zap all connections for this user after a password change */
1230 for(d
= connections
; d
; d
= d
->next
)
1231 if(!strcmp(d
->who
, vec
[0]))
1233 } else if(!strcmp(vec
[1], "rights")) {
1234 /* Update rights for this user */
1237 if(parse_rights(vec
[2], &r
, 1))
1238 for(d
= connections
; d
; d
= d
->next
)
1239 if(!strcmp(d
->who
, vec
[0]))
1242 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1244 error(0, "%s attempted edituser but lacks required rights", c
->who
);
1245 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1250 static int c_userinfo(struct conn
*c
,
1251 char attribute((unused
)) **vec
,
1252 int attribute((unused
)) nvec
) {
1256 /* We allow remote querying of rights so that clients can figure out what
1257 * they're allowed to do */
1258 if(!config
->remote_userman
1259 && !(c
->rights
& RIGHT__LOCAL
)
1260 && strcmp(vec
[1], "rights")) {
1261 error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1262 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1265 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1266 * address and rights list. */
1267 if((c
->rights
& RIGHT_ADMIN
)
1268 || (!strcmp(c
->who
, vec
[0])
1269 && (!strcmp(vec
[1], "email")
1270 || !strcmp(vec
[1], "rights")))) {
1271 if((k
= trackdb_getuserinfo(vec
[0])))
1272 if((value
= kvp_get(k
, vec
[1])))
1273 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1275 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1277 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1279 error(0, "%s attempted userinfo but lacks required rights", c
->who
);
1280 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1285 static int c_users(struct conn
*c
,
1286 char attribute((unused
)) **vec
,
1287 int attribute((unused
)) nvec
) {
1288 /* TODO de-dupe with c_tags */
1289 char **users
= trackdb_listusers();
1291 sink_writes(ev_writer_sink(c
->w
), "253 User list follows\n");
1293 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1294 **users
== '.' ?
"." : "", *users
);
1297 sink_writes(ev_writer_sink(c
->w
), ".\n");
1298 return 1; /* completed */
1301 /** @brief Base64 mapping table for confirmation strings
1303 * This is used with generic_to_base64() and generic_base64(). We cannot use
1304 * the MIME table as that contains '+' and '=' which get quoted when
1305 * URL-encoding. (The CGI still does the URL encoding but it is desirable to
1306 * avoid it being necessary.)
1308 static const char confirm_base64_table
[] =
1309 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*";
1311 static int c_register(struct conn
*c
,
1313 int attribute((unused
)) nvec
) {
1318 /* The confirmation string is base64(username;nonce) */
1319 bufsize
= strlen(vec
[0]) + CONFIRM_SIZE
+ 2;
1320 buf
= xmalloc_noptr(bufsize
);
1321 offset
= byte_snprintf(buf
, bufsize
, "%s;", vec
[0]);
1322 gcry_randomize(buf
+ offset
, CONFIRM_SIZE
, GCRY_STRONG_RANDOM
);
1323 cs
= generic_to_base64((uint8_t *)buf
, offset
+ CONFIRM_SIZE
,
1324 confirm_base64_table
);
1325 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1326 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1328 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1332 static int c_confirm(struct conn
*c
,
1334 int attribute((unused
)) nvec
) {
1340 /* Get some kind of peer identifcation */
1341 if(!(host
= connection_host(c
))) {
1342 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1345 if(!(user
= generic_base64(vec
[0], &nuser
, confirm_base64_table
))
1346 || !(sep
= memchr(user
, ';', nuser
))) {
1347 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1351 if(trackdb_confirm(user
, vec
[0], &rights
))
1352 sink_writes(ev_writer_sink(c
->w
), "550 Incorrect confirmation string\n");
1357 if(strcmp(host
, "local"))
1358 info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1360 c
->rights
|= RIGHT__LOCAL
;
1361 /* Response contains username so client knows who they are acting as */
1362 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1367 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1368 pid_t
attribute((unused
)) pid
,
1370 const struct rusage
attribute((unused
)) *rusage
,
1372 struct conn
*const c
= u
;
1374 /* Tell the client what went down */
1376 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1378 error(0, "reminder subprocess %s", wstat(status
));
1379 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1381 /* Re-enable this connection */
1382 ev_reader_enable(c
->r
);
1386 static int c_reminder(struct conn
*c
,
1388 int attribute((unused
)) nvec
) {
1390 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1395 static hash
*last_reminder
;
1397 if(!config
->mail_sender
) {
1398 error(0, "cannot send password reminders because mail_sender not set");
1399 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1402 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1403 error(0, "reminder for user '%s' who does not exist", vec
[0]);
1404 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1407 if(!(email
= kvp_get(k
, "email"))
1408 || !strchr(email
, '@')) {
1409 error(0, "user '%s' has no valid email address", vec
[0]);
1410 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1413 if(!(password
= kvp_get(k
, "password"))
1415 error(0, "user '%s' has no password", vec
[0]);
1416 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1419 /* Rate-limit reminders. This hash is bounded in size by the number of
1420 * users. If this is actually a problem for anyone then we can periodically
1423 last_reminder
= hash_new(sizeof (time_t));
1424 last
= hash_find(last_reminder
, vec
[0]);
1426 if(last
&& now
< *last
+ config
->reminder_interval
) {
1427 error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1428 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1431 /* Send the reminder */
1432 /* TODO this should be templatized and to some extent merged with
1433 * the code in act_register() */
1434 byte_xasprintf((char **)&text
,
1435 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1436 "Your password is:\n"
1439 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1440 fatal(0, "cannot encode email");
1441 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1442 quote822(charset
, 0));
1443 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1444 "DisOrder password reminder",
1445 encoding
, content_type
, text
);
1447 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1450 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1451 info("sending a passsword reminder to user '%s'", vec
[0]);
1452 /* We can only continue when the subprocess finishes */
1453 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1457 static int c_schedule_list(struct conn
*c
,
1458 char attribute((unused
)) **vec
,
1459 int attribute((unused
)) nvec
) {
1460 char **ids
= schedule_list(0);
1461 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1463 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1464 sink_writes(ev_writer_sink(c
->w
), ".\n");
1465 return 1; /* completed */
1468 static int c_schedule_get(struct conn
*c
,
1470 int attribute((unused
)) nvec
) {
1471 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1474 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1475 return 1; /* completed */
1477 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1479 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1480 for(k
= actiondata
; k
; k
= k
->next
)
1481 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1482 quoteutf8(k
->name
), quoteutf8(k
->value
));
1483 sink_writes(ev_writer_sink(c
->w
), ".\n");
1484 return 1; /* completed */
1487 static int c_schedule_del(struct conn
*c
,
1489 int attribute((unused
)) nvec
) {
1490 struct kvp
*actiondata
= schedule_get(vec
[0]);
1493 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1494 return 1; /* completed */
1496 /* If you have admin rights you can delete anything. If you don't then you
1497 * can only delete your own scheduled events. */
1498 if(!(c
->rights
& RIGHT_ADMIN
)) {
1499 const char *who
= kvp_get(actiondata
, "who");
1501 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1502 sink_writes(ev_writer_sink(c
->w
), "551 Not authorized\n");
1503 return 1; /* completed */
1506 if(schedule_del(vec
[0]))
1507 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1509 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1510 return 1; /* completed */
1513 static int c_schedule_add(struct conn
*c
,
1516 struct kvp
*actiondata
= 0;
1519 /* Standard fields */
1520 kvp_set(&actiondata
, "who", c
->who
);
1521 kvp_set(&actiondata
, "when", vec
[0]);
1522 kvp_set(&actiondata
, "priority", vec
[1]);
1523 kvp_set(&actiondata
, "action", vec
[2]);
1524 /* Action-dependent fields */
1525 if(!strcmp(vec
[2], "play")) {
1527 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1530 if(!trackdb_exists(vec
[3])) {
1531 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1534 kvp_set(&actiondata
, "track", vec
[3]);
1535 } else if(!strcmp(vec
[2], "set-global")) {
1536 if(nvec
< 4 || nvec
> 5) {
1537 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1540 kvp_set(&actiondata
, "key", vec
[3]);
1542 kvp_set(&actiondata
, "value", vec
[4]);
1544 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1547 /* schedule_add() checks user rights */
1548 id
= schedule_add(c
->ev
, actiondata
);
1550 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1552 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1556 static const struct command
{
1557 /** @brief Command name */
1560 /** @brief Minimum number of arguments */
1563 /** @brief Maximum number of arguments */
1566 /** @brief Function to process command */
1567 int (*fn
)(struct conn
*, char **, int);
1569 /** @brief Rights required to execute command
1571 * 0 means that the command can be issued without logging in. If multiple
1572 * bits are listed here any of those rights will do.
1576 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1577 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1578 { "confirm", 1, 1, c_confirm
, 0 },
1579 { "cookie", 1, 1, c_cookie
, 0 },
1580 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1581 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1582 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1583 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1584 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1585 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1586 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1587 { "files", 0, 2, c_files
, RIGHT_READ
},
1588 { "get", 2, 2, c_get
, RIGHT_READ
},
1589 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1590 { "length", 1, 1, c_length
, RIGHT_READ
},
1591 { "log", 0, 0, c_log
, RIGHT_READ
},
1592 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1593 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1594 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1595 { "new", 0, 1, c_new
, RIGHT_READ
},
1596 { "nop", 0, 0, c_nop
, 0 },
1597 { "part", 3, 3, c_part
, RIGHT_READ
},
1598 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1599 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1600 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1601 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1602 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1603 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1604 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1605 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1606 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1607 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1608 { "register", 3, 3, c_register
, RIGHT_REGISTER
|RIGHT__LOCAL
},
1609 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1610 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1611 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1612 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1613 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1614 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1615 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1616 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1617 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1618 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1619 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1620 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1621 { "search", 1, 1, c_search
, RIGHT_READ
},
1622 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1623 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1624 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1625 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1626 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1627 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1628 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1629 { "user", 2, 2, c_user
, 0 },
1630 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1631 { "users", 0, 0, c_users
, RIGHT_READ
},
1632 { "version", 0, 0, c_version
, RIGHT_READ
},
1633 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1636 static void command_error(const char *msg
, void *u
) {
1639 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1642 /* process a command. Return 1 if complete, 0 if incomplete. */
1643 static int command(struct conn
*c
, char *line
) {
1647 D(("server command %s", line
));
1648 /* We force everything into NFC as early as possible */
1649 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1650 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1653 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1654 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1658 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1661 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
1662 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1664 if(commands
[n
].rights
1665 && !(c
->rights
& commands
[n
].rights
)) {
1666 error(0, "%s attempted %s but lacks required rights", c
->who ? c
->who
: "NULL",
1668 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
1673 if(nvec
< commands
[n
].minargs
) {
1674 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1677 if(nvec
> commands
[n
].maxargs
) {
1678 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1681 return commands
[n
].fn(c
, vec
, nvec
);
1683 return 1; /* completed */
1686 /* redirect to the right reader callback for our current state */
1687 static int redirect_reader_callback(ev_source
*ev
,
1695 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1698 /* the main command reader */
1699 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1709 D(("server reader_callback"));
1710 while((eol
= memchr(ptr
, '\n', bytes
))) {
1712 ev_reader_consume(reader
, eol
- (char *)ptr
);
1713 complete
= command(c
, ptr
);
1714 bytes
-= (eol
- (char *)ptr
);
1717 /* the command had better have set a new reader callback */
1719 /* there are further bytes to read, or we are at eof; arrange for the
1720 * command's reader callback to handle them */
1721 return ev_reader_incomplete(reader
);
1722 /* nothing's going on right now */
1725 /* command completed, we can go around and handle the next one */
1729 error(0, "S%x unterminated line", c
->tag
);
1730 D(("normal reader close"));
1733 D(("close associated writer"));
1734 ev_writer_close(c
->w
);
1737 remove_connection(c
);
1742 static int listen_callback(ev_source
*ev
,
1744 const struct sockaddr
attribute((unused
)) *remote
,
1745 socklen_t
attribute((unused
)) rlen
,
1747 const struct listener
*l
= u
;
1748 struct conn
*c
= xmalloc(sizeof *c
);
1749 static unsigned tags
;
1751 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1756 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1758 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1762 c
->reader
= reader_callback
;
1765 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1766 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
1768 config
->authorization_algorithm
,
1769 hex(c
->nonce
, sizeof c
->nonce
));
1773 int server_start(ev_source
*ev
, int pf
,
1774 size_t socklen
, const struct sockaddr
*sa
,
1777 struct listener
*l
= xmalloc(sizeof *l
);
1778 static const int one
= 1;
1780 D(("server_init socket %s", name
));
1781 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1782 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1783 if(bind(fd
, sa
, socklen
) < 0) {
1784 error(errno
, "error binding to %s", name
);
1792 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1797 int server_stop(ev_source
*ev
, int fd
) {
1799 return ev_listen_cancel(ev
, fd
);