2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2009 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"
23 # define NONCE_SIZE 16
27 /** @brief Size of nonce in confirmation string in 32-bit words
29 * 64 bits gives 11 digits (in base 62).
31 # define CONFIRM_SIZE 2
34 int volume_left
, volume_right
; /* last known volume */
36 /** @brief Accept all well-formed login attempts
49 /** @brief Signature for line reader callback
52 * @return 0 if incomplete, 1 if complete
54 * @p line is 0-terminated and excludes the newline. It points into the
55 * input buffer so will become invalid shortly.
57 typedef int line_reader_type(struct conn
*c
,
60 /** @brief Signature for with-body command callbacks
62 * @param body List of body lines
63 * @param nbody Number of body lines
64 * @param u As passed to fetch_body()
65 * @return 0 to suspend input, 1 if complete
67 * The body strings are allocated (so survive indefinitely) and don't include
70 typedef int body_callback_type(struct conn
*c
,
75 /** @brief One client connection */
77 /** @brief Read commands from here */
79 /** @brief Send responses to here */
81 /** @brief Underlying file descriptor */
83 /** @brief Unique identifier for connection used in log messages */
85 /** @brief Login name or NULL */
87 /** @brief Event loop */
89 /** @brief Nonce chosen for this connection */
90 unsigned char nonce
[NONCE_SIZE
];
91 /** @brief Current reader callback
93 * We change this depending on whether we're servicing the @b log command
95 ev_reader_callback
*reader
;
96 /** @brief Event log output sending to this connection */
97 struct eventlog_output
*lo
;
98 /** @brief Parent listener */
99 const struct listener
*l
;
100 /** @brief Login cookie or NULL */
102 /** @brief Connection rights */
104 /** @brief Next connection */
106 /** @brief True if pending rescan had 'wait' set */
108 /** @brief Playlist that this connection locks */
109 const char *locked_playlist
;
110 /** @brief When that playlist was locked */
112 /** @brief Line reader function */
113 line_reader_type
*line_reader
;
114 /** @brief Called when command body has been read */
115 body_callback_type
*body_callback
;
116 /** @brief Passed to @c body_callback */
118 /** @brief Accumulating body */
119 struct vector body
[1];
122 /** @brief Linked list of connections */
123 static struct conn
*connections
;
125 static int reader_callback(ev_source
*ev
,
131 static int c_playlist_set_body(struct conn
*c
,
135 static int fetch_body(struct conn
*c
,
136 body_callback_type body_callback
,
138 static int body_line(struct conn
*c
, char *line
);
139 static int command(struct conn
*c
, char *line
);
141 static const char *noyes
[] = { "no", "yes" };
143 /** @brief Remove a connection from the connection list */
144 static void remove_connection(struct conn
*c
) {
147 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
153 /** @brief Called when a connection's writer fails or is shut down
155 * If the connection still has a raeder that is cancelled.
157 static int writer_error(ev_source
attribute((unused
)) *ev
,
162 D(("server writer_error S%x %d", c
->tag
, errno_value
));
163 if(errno_value
== 0) {
165 D(("S%x writer completed", c
->tag
));
167 if(errno_value
!= EPIPE
)
168 disorder_error(errno_value
, "S%x write error on socket", c
->tag
);
170 D(("cancel reader"));
171 ev_reader_cancel(c
->r
);
174 D(("done cancel reader"));
178 remove_connection(c
);
182 /** @brief Called when a conncetion's reader fails or is shut down
184 * If connection still has a writer then it is closed.
186 static int reader_error(ev_source
attribute((unused
)) *ev
,
191 D(("server reader_error S%x %d", c
->tag
, errno_value
));
192 disorder_error(errno_value
, "S%x read error on socket", c
->tag
);
194 ev_writer_close(c
->w
);
198 remove_connection(c
);
202 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
204 disable_playing(c
->who
, c
->ev
);
205 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
206 disable_playing(c
->who
, c
->ev
);
208 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
209 return 1; /* completed */
211 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
212 return 1; /* completed */
215 static int c_enable(struct conn
*c
,
216 char attribute((unused
)) **vec
,
217 int attribute((unused
)) nvec
) {
218 enable_playing(c
->who
, c
->ev
);
219 /* Enable implicitly unpauses if there is nothing playing */
220 if(paused
&& !playing
) resume_playing(c
->who
);
221 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
222 return 1; /* completed */
225 static int c_enabled(struct conn
*c
,
226 char attribute((unused
)) **vec
,
227 int attribute((unused
)) nvec
) {
228 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
229 return 1; /* completed */
232 static int c_play(struct conn
*c
, char **vec
,
233 int attribute((unused
)) nvec
) {
235 struct queue_entry
*q
;
237 if(!trackdb_exists(vec
[0])) {
238 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
241 if(!(track
= trackdb_resolve(vec
[0]))) {
242 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
245 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
, NULL
, origin_picked
);
247 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
248 /* We make sure the track at the head of the queue is prepared, just in case
249 * we added it. We could be more subtle but prepare() will ensure we don't
250 * prepare the same track twice so there's no point. */
251 if(qhead
.next
!= &qhead
)
252 prepare(c
->ev
, qhead
.next
);
253 /* If the queue was empty but we are for some reason paused then
255 if(!playing
) resume_playing(0);
257 return 1; /* completed */
260 static int c_playafter(struct conn
*c
, char **vec
,
261 int attribute((unused
)) nvec
) {
263 struct queue_entry
*q
;
264 const char *afterme
= vec
[0];
266 for(int n
= 1; n
< nvec
; ++n
) {
267 if(!trackdb_exists(vec
[n
])) {
268 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
271 if(!(track
= trackdb_resolve(vec
[n
]))) {
272 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
275 q
= queue_add(track
, c
->who
, WHERE_AFTER
, afterme
, origin_picked
);
277 sink_printf(ev_writer_sink(c
->w
), "550 No such ID\n");
280 disorder_info("added %s as %s after %s", track
, q
->id
, afterme
);
284 sink_printf(ev_writer_sink(c
->w
), "252 OK\n");
285 /* We make sure the track at the head of the queue is prepared, just in case
286 * we added it. We could be more subtle but prepare() will ensure we don't
287 * prepare the same track twice so there's no point. */
288 if(qhead
.next
!= &qhead
) {
289 prepare(c
->ev
, qhead
.next
);
290 disorder_info("prepared %s", qhead
.next
->id
);
292 /* If the queue was empty but we are for some reason paused then
297 return 1; /* completed */
300 static int c_remove(struct conn
*c
, char **vec
,
301 int attribute((unused
)) nvec
) {
302 struct queue_entry
*q
;
304 if(!(q
= queue_find(vec
[0]))) {
305 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
308 if(!right_removable(c
->rights
, c
->who
, q
)) {
309 disorder_error(0, "%s attempted remove but lacks required rights", c
->who
);
310 sink_writes(ev_writer_sink(c
->w
),
311 "510 Not authorized to remove that track\n");
314 queue_remove(q
, c
->who
);
315 /* De-prepare the track. */
317 /* See about adding a new random track */
318 add_random_track(c
->ev
);
319 /* Prepare whatever the next head track is. */
320 if(qhead
.next
!= &qhead
)
321 prepare(c
->ev
, qhead
.next
);
323 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
324 return 1; /* completed */
327 static int c_scratch(struct conn
*c
,
331 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
332 return 1; /* completed */
334 /* TODO there is a bug here: if we specify an ID but it's not the currently
335 * playing track then you will get 550 if you weren't authorized to scratch
336 * the currently playing track. */
337 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
338 disorder_error(0, "%s attempted scratch but lacks required rights", c
->who
);
339 sink_writes(ev_writer_sink(c
->w
),
340 "510 Not authorized to scratch that track\n");
343 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
344 /* If you scratch an unpaused track then it is automatically unpaused */
346 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
347 return 1; /* completed */
350 static int c_pause(struct conn
*c
,
351 char attribute((unused
)) **vec
,
352 int attribute((unused
)) nvec
) {
354 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
355 return 1; /* completed */
358 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
359 return 1; /* completed */
361 if(pause_playing(c
->who
) < 0)
362 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
364 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
368 static int c_resume(struct conn
*c
,
369 char attribute((unused
)) **vec
,
370 int attribute((unused
)) nvec
) {
372 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
373 return 1; /* completed */
375 resume_playing(c
->who
);
376 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
380 static int c_shutdown(struct conn
*c
,
381 char attribute((unused
)) **vec
,
382 int attribute((unused
)) nvec
) {
383 disorder_info("S%x shut down by %s", c
->tag
, c
->who
);
384 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
385 ev_writer_flush(c
->w
);
389 static int c_reconfigure(struct conn
*c
,
390 char attribute((unused
)) **vec
,
391 int attribute((unused
)) nvec
) {
392 disorder_info("S%x reconfigure by %s", c
->tag
, c
->who
);
393 if(reconfigure(c
->ev
, 1))
394 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
396 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
397 return 1; /* completed */
400 static void finished_rescan(void *ru
) {
401 struct conn
*const c
= ru
;
403 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
404 /* Turn this connection back on */
405 ev_reader_enable(c
->r
);
408 static void start_fresh_rescan(void *ru
) {
409 struct conn
*const c
= ru
;
411 if(trackdb_rescan_underway()) {
412 /* Some other waiter beat us to it. However in this case we're happy to
413 * piggyback; the requirement is that a new rescan be started, not that it
414 * was _our_ rescan. */
416 /* We block until the rescan completes */
417 trackdb_add_rescanned(finished_rescan
, c
);
419 /* We report that the new rescan has started */
420 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
421 /* Turn this connection back on */
422 ev_reader_enable(c
->r
);
425 /* We are the first connection to get a callback so we must start a
428 /* We want to block until the new rescan completes */
429 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
431 /* We can report back immediately */
432 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
433 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
434 /* Turn this connection back on */
435 ev_reader_enable(c
->r
);
440 static int c_rescan(struct conn
*c
,
443 int flag_wait
= 0, flag_fresh
= 0, n
;
446 for(n
= 0; n
< nvec
; ++n
) {
447 if(!strcmp(vec
[n
], "wait"))
448 flag_wait
= 1; /* wait for rescan to complete */
450 /* Currently disabled because untested (and hard to test). */
451 else if(!strcmp(vec
[n
], "fresh"))
452 flag_fresh
= 1; /* don't piggyback underway rescan */
455 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
456 return 1; /* completed */
459 /* Report what was requested */
460 disorder_info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
461 flag_wait ?
"wait" : "",
462 flag_fresh ?
"fresh" : "");
463 if(trackdb_rescan_underway()) {
465 /* We want a fresh rescan but there is already one underway. Arrange a
466 * callback when it completes and then set off a new one. */
467 c
->rescan_wait
= flag_wait
;
468 trackdb_add_rescanned(start_fresh_rescan
, c
);
472 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
476 /* There's a rescan underway, and it's acceptable to piggyback on it */
478 /* We want to block until completion. */
479 trackdb_add_rescanned(finished_rescan
, c
);
482 /* We don't want to block. So we just report that things are in
484 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
489 /* No rescan is underway. fresh is therefore irrelevant. */
491 /* We want to block until completion */
492 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
495 /* We don't want to block. */
496 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
497 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
498 return 1; /* completed */
503 static int c_version(struct conn
*c
,
504 char attribute((unused
)) **vec
,
505 int attribute((unused
)) nvec
) {
506 /* VERSION had better only use the basic character set */
507 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
508 return 1; /* completed */
511 static int c_playing(struct conn
*c
,
512 char attribute((unused
)) **vec
,
513 int attribute((unused
)) nvec
) {
515 queue_fix_sofar(playing
);
516 playing
->expected
= 0;
517 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
519 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
520 return 1; /* completed */
523 static const char *connection_host(struct conn
*c
) {
526 struct sockaddr_in in
;
527 struct sockaddr_in6 in6
;
533 /* get connection data */
535 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
536 disorder_error(errno
, "S%x error calling getpeername", c
->tag
);
539 if(c
->l
->pf
!= PF_UNIX
) {
540 if((n
= getnameinfo(&u
.sa
, l
,
541 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
542 disorder_error(0, "S%x error calling getnameinfo: %s",
543 c
->tag
, gai_strerror(n
));
546 return xstrdup(host
);
551 static int c_user(struct conn
*c
,
553 int attribute((unused
)) nvec
) {
555 const char *res
, *host
, *password
;
559 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
562 /* get connection data */
563 if(!(host
= connection_host(c
))) {
564 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
568 k
= trackdb_getuserinfo(vec
[0]);
569 /* reject nonexistent users */
571 disorder_error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
572 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
575 /* reject unconfirmed users */
576 if(kvp_get(k
, "confirmation")) {
577 disorder_error(0, "S%x unconfirmed user '%s' from %s",
578 c
->tag
, vec
[0], host
);
579 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
582 password
= kvp_get(k
, "password");
583 if(!password
) password
= "";
584 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
585 disorder_error(0, "error parsing rights for %s", vec
[0]);
586 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
589 /* check whether the response is right */
590 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
591 config
->authorization_algorithm
);
592 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
595 /* currently we only bother logging remote connections */
596 if(strcmp(host
, "local"))
597 disorder_info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
599 c
->rights
|= RIGHT__LOCAL
;
600 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
603 /* oops, response was wrong */
604 disorder_info("S%x authentication failure for %s from %s",
605 c
->tag
, vec
[0], host
);
606 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
610 static int c_recent(struct conn
*c
,
611 char attribute((unused
)) **vec
,
612 int attribute((unused
)) nvec
) {
613 const struct queue_entry
*q
;
615 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
616 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
617 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
618 sink_writes(ev_writer_sink(c
->w
), ".\n");
619 return 1; /* completed */
622 static int c_queue(struct conn
*c
,
623 char attribute((unused
)) **vec
,
624 int attribute((unused
)) nvec
) {
625 struct queue_entry
*q
;
630 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
631 if(playing_is_enabled() && !paused
) {
633 queue_fix_sofar(playing
);
634 if((l
= trackdb_get(playing
->track
, "_length"))
635 && (length
= atol(l
))) {
637 when
+= length
- playing
->sofar
+ config
->gap
;
640 /* Nothing is playing but playing is enabled, so whatever is
641 * first in the queue can be expected to start immediately. */
644 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
645 /* fill in estimated start time */
647 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
648 /* update for next track */
650 if((l
= trackdb_get(q
->track
, "_length"))
651 && (length
= atol(l
)))
652 when
+= length
+ config
->gap
;
657 sink_writes(ev_writer_sink(c
->w
), ".\n");
658 return 1; /* completed */
661 static int output_list(struct conn
*c
, char **vec
) {
663 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
664 sink_writes(ev_writer_sink(c
->w
), ".\n");
668 static int files_dirs(struct conn
*c
,
671 enum trackdb_listable what
) {
672 const char *dir
, *re
, *errstr
;
678 case 0: dir
= 0; re
= 0; break;
679 case 1: dir
= vec
[0]; re
= 0; break;
680 case 2: dir
= vec
[0]; re
= vec
[1]; break;
683 /* A bit of a bodge to make sure the args don't trample on cache keys */
684 if(dir
&& strchr(dir
, '\n')) {
685 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
688 if(re
&& strchr(re
, '\n')) {
689 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
692 /* We bother eliminating "" because the web interface is relatively
693 * likely to send it */
695 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
696 fvec
= (char **)cache_get(&cache_files_type
, key
);
698 /* Got a cache hit, don't store the answer in the cache */
701 rec
= 0; /* quieten compiler */
703 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
705 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
706 &errstr
, &erroffset
, 0))) {
707 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
711 /* It only counts as a miss if the regexp was valid. */
712 ++cache_files_misses
;
715 /* No regexp, don't bother caching the result */
721 /* No cache hit (either because a miss, or because we did not look) so do
724 fvec
= trackdb_list(dir
, 0, what
, rec
);
726 fvec
= trackdb_list(0, 0, what
, rec
);
729 /* Put the answer in the cache */
730 cache_put(&cache_files_type
, key
, fvec
);
731 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
732 return output_list(c
, fvec
);
735 static int c_files(struct conn
*c
,
738 return files_dirs(c
, vec
, nvec
, trackdb_files
);
741 static int c_dirs(struct conn
*c
,
744 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
747 static int c_allfiles(struct conn
*c
,
750 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
753 static int c_get(struct conn
*c
,
755 int attribute((unused
)) nvec
) {
756 const char *v
, *track
;
758 if(!(track
= trackdb_resolve(vec
[0]))) {
759 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
762 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
763 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
765 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
769 static int c_length(struct conn
*c
,
771 int attribute((unused
)) nvec
) {
772 const char *track
, *v
;
774 if(!(track
= trackdb_resolve(vec
[0]))) {
775 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
778 if((v
= trackdb_get(track
, "_length")))
779 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
781 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
785 static int c_set(struct conn
*c
,
787 int attribute((unused
)) nvec
) {
790 if(!(track
= trackdb_resolve(vec
[0]))) {
791 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
794 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
795 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
797 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
801 static int c_prefs(struct conn
*c
,
803 int attribute((unused
)) nvec
) {
807 if(!(track
= trackdb_resolve(vec
[0]))) {
808 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
811 k
= trackdb_get_all(track
);
812 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
813 for(; k
; k
= k
->next
)
814 if(k
->name
[0] != '_') /* omit internal values */
815 sink_printf(ev_writer_sink(c
->w
),
816 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
817 sink_writes(ev_writer_sink(c
->w
), ".\n");
821 static int c_exists(struct conn
*c
,
823 int attribute((unused
)) nvec
) {
824 /* trackdb_exists() does its own alias checking */
825 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
829 static void search_parse_error(const char *msg
, void *u
) {
830 *(const char **)u
= msg
;
833 static int c_search(struct conn
*c
,
835 int attribute((unused
)) nvec
) {
836 char **terms
, **results
;
837 int nterms
, nresults
, n
;
838 const char *e
= "unknown error";
840 /* This is a bit of a bodge. Initially it's there to make the eclient
841 * interface a bit more convenient to add searching to, but it has the more
842 * compelling advantage that if everything uses it, then interpretation of
843 * user-supplied search strings will be the same everywhere. */
844 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
845 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
847 results
= trackdb_search(terms
, nterms
, &nresults
);
848 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
849 for(n
= 0; n
< nresults
; ++n
)
850 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
851 sink_writes(ev_writer_sink(c
->w
), ".\n");
856 static int c_random_enable(struct conn
*c
,
857 char attribute((unused
)) **vec
,
858 int attribute((unused
)) nvec
) {
859 enable_random(c
->who
, c
->ev
);
860 /* Enable implicitly unpauses if there is nothing playing */
861 if(paused
&& !playing
) resume_playing(c
->who
);
862 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
863 return 1; /* completed */
866 static int c_random_disable(struct conn
*c
,
867 char attribute((unused
)) **vec
,
868 int attribute((unused
)) nvec
) {
869 disable_random(c
->who
, c
->ev
);
870 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
871 return 1; /* completed */
874 static int c_random_enabled(struct conn
*c
,
875 char attribute((unused
)) **vec
,
876 int attribute((unused
)) nvec
) {
877 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
878 return 1; /* completed */
881 static void got_stats(char *stats
, void *u
) {
882 struct conn
*const c
= u
;
884 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
885 /* Now we can start processing commands again */
886 ev_reader_enable(c
->r
);
889 static int c_stats(struct conn
*c
,
890 char attribute((unused
)) **vec
,
891 int attribute((unused
)) nvec
) {
892 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
893 return 0; /* not yet complete */
896 static int c_volume(struct conn
*c
,
908 l
= r
= atoi(vec
[0]);
919 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
920 if(!(c
->rights
& rights
)) {
921 disorder_error(0, "%s attempted to set volume but lacks required rights",
923 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
926 if(!api
|| !api
->set_volume
) {
927 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
930 (set ? api
->set_volume
: api
->get_volume
)(&l
, &r
);
931 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
932 if(l
!= volume_left
|| r
!= volume_right
) {
935 snprintf(lb
, sizeof lb
, "%d", l
);
936 snprintf(rb
, sizeof rb
, "%d", r
);
937 eventlog("volume", lb
, rb
, (char *)0);
942 /** @brief Called when data arrives on a log connection
944 * We just discard all such data. The client may occasionally send data as a
947 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
949 void attribute((unused
)) *ptr
,
951 int attribute((unused
)) eof
,
952 void attribute((unused
)) *u
) {
955 ev_reader_consume(reader
, bytes
);
957 /* Oops, that's all for now */
958 D(("logging reader eof"));
961 ev_writer_close(c
->w
);
965 remove_connection(c
);
970 static void logclient(const char *msg
, void *user
) {
971 struct conn
*c
= user
;
974 /* This connection has gone up in smoke for some reason */
975 eventlog_remove(c
->lo
);
979 /* user_* messages are restricted */
980 if(!strncmp(msg
, "user_", 5)) {
981 /* They are only sent to admin users */
982 if(!(c
->rights
& RIGHT_ADMIN
))
984 /* They are not sent over TCP connections unless remote user-management is
986 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
))
989 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
990 (uintmax_t)xtime(0), msg
);
993 static int c_log(struct conn
*c
,
994 char attribute((unused
)) **vec
,
995 int attribute((unused
)) nvec
) {
998 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
999 /* pump out initial state */
1001 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1003 playing_is_enabled() ?
"enable_play" : "disable_play");
1004 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1006 random_is_enabled() ?
"enable_random" : "disable_random");
1007 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1009 paused ?
"pause" : "resume");
1011 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
1013 /* Initial volume */
1014 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
1015 (uintmax_t)now
, volume_left
, volume_right
);
1016 c
->lo
= xmalloc(sizeof *c
->lo
);
1017 c
->lo
->fn
= logclient
;
1019 eventlog_add(c
->lo
);
1020 c
->reader
= logging_reader_callback
;
1024 /** @brief Test whether a move is allowed
1025 * @param c Connection
1026 * @param qs List of IDs on queue
1027 * @param nqs Number of IDs
1028 * @return 0 if move is prohibited, non-0 if it is allowed
1030 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
1031 for(; nqs
> 0; ++qs
, --nqs
) {
1032 struct queue_entry
*const q
= *qs
;
1034 if(!right_movable(c
->rights
, c
->who
, q
))
1040 static int c_move(struct conn
*c
,
1042 int attribute((unused
)) nvec
) {
1043 struct queue_entry
*q
;
1046 if(!(q
= queue_find(vec
[0]))) {
1047 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1050 if(!has_move_rights(c
, &q
, 1)) {
1051 disorder_error(0, "%s attempted move but lacks required rights", c
->who
);
1052 sink_writes(ev_writer_sink(c
->w
),
1053 "510 Not authorized to move that track\n");
1056 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
1057 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
1058 /* If we've moved to the head of the queue then prepare the track. */
1064 static int c_moveafter(struct conn
*c
,
1066 int attribute((unused
)) nvec
) {
1067 struct queue_entry
*q
, **qs
;
1071 if(!(q
= queue_find(vec
[0]))) {
1072 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1079 qs
= xcalloc(nvec
, sizeof *qs
);
1080 for(n
= 0; n
< nvec
; ++n
)
1081 if(!(qs
[n
] = queue_find(vec
[n
]))) {
1082 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1085 if(!has_move_rights(c
, qs
, nvec
)) {
1086 disorder_error(0, "%s attempted moveafter but lacks required rights",
1088 sink_writes(ev_writer_sink(c
->w
),
1089 "510 Not authorized to move those tracks\n");
1092 queue_moveafter(q
, nvec
, qs
, c
->who
);
1093 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
1094 /* If we've moved to the head of the queue then prepare the track. */
1100 static int c_part(struct conn
*c
,
1102 int attribute((unused
)) nvec
) {
1105 if(!(track
= trackdb_resolve(vec
[0]))) {
1106 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1109 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1110 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1114 static int c_resolve(struct conn
*c
,
1116 int attribute((unused
)) nvec
) {
1119 if(!(track
= trackdb_resolve(vec
[0]))) {
1120 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1123 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1127 static int list_response(struct conn
*c
,
1130 sink_printf(ev_writer_sink(c
->w
), "253 %s\n", reply
);
1132 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1133 **list
== '.' ?
"." : "", *list
);
1136 sink_writes(ev_writer_sink(c
->w
), ".\n");
1137 return 1; /* completed */
1140 static int c_tags(struct conn
*c
,
1141 char attribute((unused
)) **vec
,
1142 int attribute((unused
)) nvec
) {
1143 return list_response(c
, "Tag list follows", trackdb_alltags());
1146 static int c_set_global(struct conn
*c
,
1148 int attribute((unused
)) nvec
) {
1149 if(vec
[0][0] == '_') {
1150 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1153 /* We special-case the 'magic' preferences here. */
1154 if(!strcmp(vec
[0], "playing")) {
1155 (flag_enabled(vec
[1]) ? enable_playing
: disable_playing
)(c
->who
, c
->ev
);
1156 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1157 } else if(!strcmp(vec
[0], "random-play")) {
1158 (flag_enabled(vec
[1]) ? enable_random
: disable_random
)(c
->who
, c
->ev
);
1159 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1161 if(!trackdb_set_global(vec
[0], vec
[1], c
->who
))
1162 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1164 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
1169 static int c_get_global(struct conn
*c
,
1171 int attribute((unused
)) nvec
) {
1172 const char *s
= trackdb_get_global(vec
[0]);
1175 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1177 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1181 static int c_nop(struct conn
*c
,
1182 char attribute((unused
)) **vec
,
1183 int attribute((unused
)) nvec
) {
1184 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1188 static int c_new(struct conn
*c
,
1198 if(max
<= 0 || max
> config
->new_max
)
1199 max
= config
->new_max
;
1200 tracks
= trackdb_new(0, max
);
1201 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1203 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1204 **tracks
== '.' ?
"." : "", *tracks
);
1207 sink_writes(ev_writer_sink(c
->w
), ".\n");
1208 return 1; /* completed */
1212 static int c_rtp_address(struct conn
*c
,
1213 char attribute((unused
)) **vec
,
1214 int attribute((unused
)) nvec
) {
1215 if(api
== &uaudio_rtp
) {
1218 netaddress_format(&config
->broadcast
, NULL
, &addr
);
1219 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1221 quoteutf8(addr
[2]));
1223 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1227 static int c_cookie(struct conn
*c
,
1229 int attribute((unused
)) nvec
) {
1234 /* Can't log in twice on the same connection */
1236 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1239 /* Get some kind of peer identifcation */
1240 if(!(host
= connection_host(c
))) {
1241 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1244 /* Check the cookie */
1245 user
= verify_cookie(vec
[0], &rights
);
1247 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1254 if(strcmp(host
, "local"))
1255 disorder_info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1257 c
->rights
|= RIGHT__LOCAL
;
1258 /* Response contains username so client knows who they are acting as */
1259 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1263 static int c_make_cookie(struct conn
*c
,
1264 char attribute((unused
)) **vec
,
1265 int attribute((unused
)) nvec
) {
1266 const char *cookie
= make_cookie(c
->who
);
1269 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1271 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1275 static int c_revoke(struct conn
*c
,
1276 char attribute((unused
)) **vec
,
1277 int attribute((unused
)) nvec
) {
1279 revoke_cookie(c
->cookie
);
1280 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1282 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1286 static int c_adduser(struct conn
*c
,
1291 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1292 disorder_error(0, "S%x: remote adduser", c
->tag
);
1293 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1298 if(parse_rights(vec
[2], 0, 1)) {
1299 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1303 rights
= config
->default_rights
;
1304 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1305 0/*email*/, 0/*confirmation*/))
1306 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1308 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1312 static int c_deluser(struct conn
*c
,
1314 int attribute((unused
)) nvec
) {
1317 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1318 disorder_error(0, "S%x: remote deluser", c
->tag
);
1319 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1322 if(trackdb_deluser(vec
[0])) {
1323 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1326 /* Zap connections belonging to deleted user */
1327 for(d
= connections
; d
; d
= d
->next
)
1328 if(!strcmp(d
->who
, vec
[0]))
1330 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1334 static int c_edituser(struct conn
*c
,
1336 int attribute((unused
)) nvec
) {
1339 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1340 disorder_error(0, "S%x: remote edituser", c
->tag
);
1341 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1344 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1345 * address and password. */
1346 if((c
->rights
& RIGHT_ADMIN
)
1347 || (!strcmp(c
->who
, vec
[0])
1348 && (!strcmp(vec
[1], "email")
1349 || !strcmp(vec
[1], "password")))) {
1350 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1351 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1354 if(!strcmp(vec
[1], "password")) {
1355 /* Zap all connections for this user after a password change */
1356 for(d
= connections
; d
; d
= d
->next
)
1357 if(!strcmp(d
->who
, vec
[0]))
1359 } else if(!strcmp(vec
[1], "rights")) {
1360 /* Update rights for this user */
1363 if(!parse_rights(vec
[2], &r
, 1)) {
1364 const char *new_rights
= rights_string(r
);
1365 for(d
= connections
; d
; d
= d
->next
) {
1366 if(!strcmp(d
->who
, vec
[0])) {
1369 /* Notify any log connections */
1371 sink_printf(ev_writer_sink(d
->w
),
1372 "%"PRIxMAX
" rights_changed %s\n",
1373 (uintmax_t)xtime(0),
1374 quoteutf8(new_rights
));
1379 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1381 disorder_error(0, "%s attempted edituser but lacks required rights",
1383 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1388 static int c_userinfo(struct conn
*c
,
1389 char attribute((unused
)) **vec
,
1390 int attribute((unused
)) nvec
) {
1394 /* We allow remote querying of rights so that clients can figure out what
1395 * they're allowed to do */
1396 if(!config
->remote_userman
1397 && !(c
->rights
& RIGHT__LOCAL
)
1398 && strcmp(vec
[1], "rights")) {
1399 disorder_error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1400 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1403 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1404 * address and rights list. */
1405 if((c
->rights
& RIGHT_ADMIN
)
1406 || (!strcmp(c
->who
, vec
[0])
1407 && (!strcmp(vec
[1], "email")
1408 || !strcmp(vec
[1], "rights")))) {
1409 if((k
= trackdb_getuserinfo(vec
[0])))
1410 if((value
= kvp_get(k
, vec
[1])))
1411 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1413 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1415 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1417 disorder_error(0, "%s attempted userinfo but lacks required rights",
1419 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1424 static int c_users(struct conn
*c
,
1425 char attribute((unused
)) **vec
,
1426 int attribute((unused
)) nvec
) {
1427 return list_response(c
, "User list follows", trackdb_listusers());
1430 static int c_register(struct conn
*c
,
1432 int attribute((unused
)) nvec
) {
1434 uint32_t nonce
[CONFIRM_SIZE
];
1435 char nonce_str
[(32 * CONFIRM_SIZE
) / 5 + 1];
1437 /* The confirmation string is username/base62(nonce). The confirmation
1438 * process will pick the username back out to identify them but the _whole_
1439 * string is used as the confirmation string. Base 62 means we used only
1440 * letters and digits, minimizing the chance of the URL being mispasted. */
1441 gcry_randomize(nonce
, sizeof nonce
, GCRY_STRONG_RANDOM
);
1442 if(basen(nonce
, CONFIRM_SIZE
, nonce_str
, sizeof nonce_str
, 62)) {
1443 disorder_error(0, "buffer too small encoding confirmation string");
1444 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1446 byte_xasprintf(&cs
, "%s/%s", vec
[0], nonce_str
);
1447 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1448 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1450 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1454 static int c_confirm(struct conn
*c
,
1456 int attribute((unused
)) nvec
) {
1461 /* Get some kind of peer identifcation */
1462 if(!(host
= connection_host(c
))) {
1463 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1466 /* Picking the LAST / means we don't (here) rule out slashes in usernames. */
1467 if(!(sep
= strrchr(vec
[0], '/'))) {
1468 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1471 user
= xstrndup(vec
[0], sep
- vec
[0]);
1472 if(trackdb_confirm(user
, vec
[0], &rights
))
1473 sink_writes(ev_writer_sink(c
->w
), "550 Incorrect confirmation string\n");
1478 if(strcmp(host
, "local"))
1479 disorder_info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1481 c
->rights
|= RIGHT__LOCAL
;
1482 /* Response contains username so client knows who they are acting as */
1483 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1488 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1489 pid_t
attribute((unused
)) pid
,
1491 const struct rusage
attribute((unused
)) *rusage
,
1493 struct conn
*const c
= u
;
1495 /* Tell the client what went down */
1497 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1499 disorder_error(0, "reminder subprocess %s", wstat(status
));
1500 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1502 /* Re-enable this connection */
1503 ev_reader_enable(c
->r
);
1507 static int c_reminder(struct conn
*c
,
1509 int attribute((unused
)) nvec
) {
1511 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1516 static hash
*last_reminder
;
1518 if(!config
->mail_sender
) {
1519 disorder_error(0, "cannot send password reminders because mail_sender not set");
1520 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1523 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1524 disorder_error(0, "reminder for user '%s' who does not exist", vec
[0]);
1525 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1528 if(!(email
= kvp_get(k
, "email"))
1529 || !email_valid(email
)) {
1530 disorder_error(0, "user '%s' has no valid email address", vec
[0]);
1531 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1534 if(!(password
= kvp_get(k
, "password"))
1536 disorder_error(0, "user '%s' has no password", vec
[0]);
1537 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1540 /* Rate-limit reminders. This hash is bounded in size by the number of
1541 * users. If this is actually a problem for anyone then we can periodically
1544 last_reminder
= hash_new(sizeof (time_t));
1545 last
= hash_find(last_reminder
, vec
[0]);
1547 if(last
&& now
< *last
+ config
->reminder_interval
) {
1548 disorder_error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1549 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1552 /* Send the reminder */
1553 /* TODO this should be templatized and to some extent merged with
1554 * the code in act_register() */
1555 byte_xasprintf((char **)&text
,
1556 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1557 "Your password is:\n"
1560 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1561 disorder_fatal(0, "cannot encode email");
1562 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1563 quote822(charset
, 0));
1564 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1565 "DisOrder password reminder",
1566 encoding
, content_type
, text
);
1568 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1571 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1572 disorder_info("sending a passsword reminder to user '%s'", vec
[0]);
1573 /* We can only continue when the subprocess finishes */
1574 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1578 static int c_schedule_list(struct conn
*c
,
1579 char attribute((unused
)) **vec
,
1580 int attribute((unused
)) nvec
) {
1581 char **ids
= schedule_list(0);
1582 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1584 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1585 sink_writes(ev_writer_sink(c
->w
), ".\n");
1586 return 1; /* completed */
1589 static int c_schedule_get(struct conn
*c
,
1591 int attribute((unused
)) nvec
) {
1592 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1595 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1596 return 1; /* completed */
1598 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1600 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1601 for(k
= actiondata
; k
; k
= k
->next
)
1602 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1603 quoteutf8(k
->name
), quoteutf8(k
->value
));
1604 sink_writes(ev_writer_sink(c
->w
), ".\n");
1605 return 1; /* completed */
1608 static int c_schedule_del(struct conn
*c
,
1610 int attribute((unused
)) nvec
) {
1611 struct kvp
*actiondata
= schedule_get(vec
[0]);
1614 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1615 return 1; /* completed */
1617 /* If you have admin rights you can delete anything. If you don't then you
1618 * can only delete your own scheduled events. */
1619 if(!(c
->rights
& RIGHT_ADMIN
)) {
1620 const char *who
= kvp_get(actiondata
, "who");
1622 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1623 sink_writes(ev_writer_sink(c
->w
), "551 Not authorized\n");
1624 return 1; /* completed */
1627 if(schedule_del(vec
[0]))
1628 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1630 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1631 return 1; /* completed */
1634 static int c_schedule_add(struct conn
*c
,
1637 struct kvp
*actiondata
= 0;
1640 /* Standard fields */
1641 kvp_set(&actiondata
, "who", c
->who
);
1642 kvp_set(&actiondata
, "when", vec
[0]);
1643 kvp_set(&actiondata
, "priority", vec
[1]);
1644 kvp_set(&actiondata
, "action", vec
[2]);
1645 /* Action-dependent fields */
1646 if(!strcmp(vec
[2], "play")) {
1648 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1651 if(!trackdb_exists(vec
[3])) {
1652 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1655 kvp_set(&actiondata
, "track", vec
[3]);
1656 } else if(!strcmp(vec
[2], "set-global")) {
1657 if(nvec
< 4 || nvec
> 5) {
1658 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1661 kvp_set(&actiondata
, "key", vec
[3]);
1663 kvp_set(&actiondata
, "value", vec
[4]);
1665 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1668 /* schedule_add() checks user rights */
1669 id
= schedule_add(c
->ev
, actiondata
);
1671 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1673 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1677 static int c_adopt(struct conn
*c
,
1679 int attribute((unused
)) nvec
) {
1680 struct queue_entry
*q
;
1683 sink_writes(ev_writer_sink(c
->w
), "550 no identity\n");
1686 if(!(q
= queue_find(vec
[0]))) {
1687 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1690 if(q
->origin
!= origin_random
) {
1691 sink_writes(ev_writer_sink(c
->w
), "550 not a random track\n");
1694 q
->origin
= origin_adopted
;
1695 q
->submitter
= xstrdup(c
->who
);
1696 eventlog("adopted", q
->id
, q
->submitter
, (char *)0);
1698 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1702 static int playlist_response(struct conn
*c
,
1706 assert(!"cannot cope with success");
1708 sink_writes(ev_writer_sink(c
->w
), "550 Access denied\n");
1711 sink_writes(ev_writer_sink(c
->w
), "550 Invalid playlist name\n");
1714 sink_writes(ev_writer_sink(c
->w
), "555 No such playlist\n");
1717 sink_writes(ev_writer_sink(c
->w
), "550 Error accessing playlist\n");
1723 static int c_playlist_get(struct conn
*c
,
1725 int attribute((unused
)) nvec
) {
1729 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, &tracks
, 0, 0)))
1730 return list_response(c
, "Playlist contents follows", tracks
);
1732 return playlist_response(c
, err
);
1735 static int c_playlist_set(struct conn
*c
,
1737 int attribute((unused
)) nvec
) {
1738 return fetch_body(c
, c_playlist_set_body
, vec
[0]);
1741 static int c_playlist_set_body(struct conn
*c
,
1745 const char *playlist
= u
;
1748 if(!c
->locked_playlist
1749 || strcmp(playlist
, c
->locked_playlist
)) {
1750 sink_writes(ev_writer_sink(c
->w
), "550 Playlist is not locked\n");
1753 if(!(err
= trackdb_playlist_set(playlist
, c
->who
,
1755 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1758 return playlist_response(c
, err
);
1761 static int c_playlist_get_share(struct conn
*c
,
1763 int attribute((unused
)) nvec
) {
1767 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, 0, 0, &share
))) {
1768 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(share
));
1771 return playlist_response(c
, err
);
1774 static int c_playlist_set_share(struct conn
*c
,
1776 int attribute((unused
)) nvec
) {
1779 if(!(err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, vec
[1]))) {
1780 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1783 return playlist_response(c
, err
);
1786 static int c_playlists(struct conn
*c
,
1787 char attribute((unused
)) **vec
,
1788 int attribute((unused
)) nvec
) {
1791 trackdb_playlist_list(c
->who
, &p
, 0);
1792 return list_response(c
, "List of playlists follows", p
);
1795 static int c_playlist_delete(struct conn
*c
,
1797 int attribute((unused
)) nvec
) {
1800 if(!(err
= trackdb_playlist_delete(vec
[0], c
->who
))) {
1801 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1804 return playlist_response(c
, err
);
1807 static int c_playlist_lock(struct conn
*c
,
1809 int attribute((unused
)) nvec
) {
1813 /* Check we're allowed to modify this playlist */
1814 if((err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, 0)))
1815 return playlist_response(c
, err
);
1816 /* If we hold a lock don't allow a new one */
1817 if(c
->locked_playlist
) {
1818 sink_writes(ev_writer_sink(c
->w
), "550 Already holding a lock\n");
1821 /* See if some other connection locks the same playlist */
1822 for(cc
= connections
; cc
; cc
= cc
->next
)
1823 if(cc
->locked_playlist
&& !strcmp(cc
->locked_playlist
, vec
[0]))
1826 /* TODO: implement config->playlist_lock_timeout */
1827 sink_writes(ev_writer_sink(c
->w
), "550 Already locked\n");
1830 c
->locked_playlist
= xstrdup(vec
[0]);
1831 time(&c
->locked_when
);
1832 sink_writes(ev_writer_sink(c
->w
), "250 Acquired lock\n");
1836 static int c_playlist_unlock(struct conn
*c
,
1837 char attribute((unused
)) **vec
,
1838 int attribute((unused
)) nvec
) {
1839 if(!c
->locked_playlist
) {
1840 sink_writes(ev_writer_sink(c
->w
), "550 Not holding a lock\n");
1843 c
->locked_playlist
= 0;
1844 sink_writes(ev_writer_sink(c
->w
), "250 Released lock\n");
1848 static const struct command
{
1849 /** @brief Command name */
1852 /** @brief Minimum number of arguments */
1855 /** @brief Maximum number of arguments */
1858 /** @brief Function to process command */
1859 int (*fn
)(struct conn
*, char **, int);
1861 /** @brief Rights required to execute command
1863 * 0 means that the command can be issued without logging in. If multiple
1864 * bits are listed here any of those rights will do.
1868 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
},
1869 { "adopt", 1, 1, c_adopt
, RIGHT_PLAY
},
1870 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1871 { "confirm", 1, 1, c_confirm
, 0 },
1872 { "cookie", 1, 1, c_cookie
, 0 },
1873 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
},
1874 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1875 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1876 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1877 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1878 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1879 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1880 { "files", 0, 2, c_files
, RIGHT_READ
},
1881 { "get", 2, 2, c_get
, RIGHT_READ
},
1882 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1883 { "length", 1, 1, c_length
, RIGHT_READ
},
1884 { "log", 0, 0, c_log
, RIGHT_READ
},
1885 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1886 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1887 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1888 { "new", 0, 1, c_new
, RIGHT_READ
},
1889 { "nop", 0, 0, c_nop
, 0 },
1890 { "part", 3, 3, c_part
, RIGHT_READ
},
1891 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1892 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1893 { "playafter", 2, INT_MAX
, c_playafter
, RIGHT_PLAY
},
1894 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1895 { "playlist-delete", 1, 1, c_playlist_delete
, RIGHT_PLAY
},
1896 { "playlist-get", 1, 1, c_playlist_get
, RIGHT_READ
},
1897 { "playlist-get-share", 1, 1, c_playlist_get_share
, RIGHT_READ
},
1898 { "playlist-lock", 1, 1, c_playlist_lock
, RIGHT_PLAY
},
1899 { "playlist-set", 1, 1, c_playlist_set
, RIGHT_PLAY
},
1900 { "playlist-set-share", 2, 2, c_playlist_set_share
, RIGHT_PLAY
},
1901 { "playlist-unlock", 0, 0, c_playlist_unlock
, RIGHT_PLAY
},
1902 { "playlists", 0, 0, c_playlists
, RIGHT_READ
},
1903 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1904 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1905 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1906 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1907 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1908 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1909 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1910 { "register", 3, 3, c_register
, RIGHT_REGISTER
},
1911 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1912 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1913 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1914 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1915 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1916 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1917 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1918 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1919 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1920 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1921 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1922 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1923 { "search", 1, 1, c_search
, RIGHT_READ
},
1924 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1925 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1926 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1927 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1928 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1929 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1930 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1931 { "user", 2, 2, c_user
, 0 },
1932 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1933 { "users", 0, 0, c_users
, RIGHT_READ
},
1934 { "version", 0, 0, c_version
, RIGHT_READ
},
1935 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1938 /** @brief Fetch a command body
1939 * @param c Connection
1940 * @param body_callback Called with body
1941 * @param u Passed to body_callback
1944 static int fetch_body(struct conn
*c
,
1945 body_callback_type body_callback
,
1947 assert(c
->line_reader
== command
);
1948 c
->line_reader
= body_line
;
1949 c
->body_callback
= body_callback
;
1951 vector_init(c
->body
);
1955 /** @brief @ref line_reader_type callback for command body lines
1956 * @param c Connection
1958 * @return 1 if complete, 0 if incomplete
1960 * Called from reader_callback().
1962 static int body_line(struct conn
*c
,
1967 /* That's the lot */
1968 c
->line_reader
= command
;
1969 vector_terminate(c
->body
);
1970 return c
->body_callback(c
, c
->body
->vec
, c
->body
->nvec
, c
->body_u
);
1973 vector_append(c
->body
, xstrdup(line
));
1974 return 1; /* completed */
1977 static void command_error(const char *msg
, void *u
) {
1980 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1983 /** @brief @ref line_reader_type callback for commands
1984 * @param c Connection
1986 * @return 1 if complete, 0 if incomplete
1988 * Called from reader_callback().
1990 static int command(struct conn
*c
, char *line
) {
1994 D(("server command %s", line
));
1995 /* We force everything into NFC as early as possible */
1996 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1997 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
2000 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
2001 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
2005 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
2008 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
2009 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
2011 if(commands
[n
].rights
2012 && !(c
->rights
& commands
[n
].rights
)) {
2013 disorder_error(0, "%s attempted %s but lacks required rights",
2014 c
->who ? c
->who
: "NULL",
2016 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
2021 if(nvec
< commands
[n
].minargs
) {
2022 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
2025 if(nvec
> commands
[n
].maxargs
) {
2026 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
2029 return commands
[n
].fn(c
, vec
, nvec
);
2031 return 1; /* completed */
2034 /* redirect to the right reader callback for our current state */
2035 static int redirect_reader_callback(ev_source
*ev
,
2043 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
2046 /* the main command reader */
2047 static int reader_callback(ev_source
attribute((unused
)) *ev
,
2057 D(("server reader_callback"));
2058 while((eol
= memchr(ptr
, '\n', bytes
))) {
2060 ev_reader_consume(reader
, eol
- (char *)ptr
);
2061 complete
= c
->line_reader(c
, ptr
); /* usually command() */
2062 bytes
-= (eol
- (char *)ptr
);
2065 /* the command had better have set a new reader callback */
2067 /* there are further bytes to read, or we are at eof; arrange for the
2068 * command's reader callback to handle them */
2069 return ev_reader_incomplete(reader
);
2070 /* nothing's going on right now */
2073 /* command completed, we can go around and handle the next one */
2077 disorder_error(0, "S%x unterminated line", c
->tag
);
2078 D(("normal reader close"));
2081 D(("close associated writer"));
2082 ev_writer_close(c
->w
);
2085 remove_connection(c
);
2090 static int listen_callback(ev_source
*ev
,
2092 const struct sockaddr
attribute((unused
)) *remote
,
2093 socklen_t
attribute((unused
)) rlen
,
2095 const struct listener
*l
= u
;
2096 struct conn
*c
= xmalloc(sizeof *c
);
2097 static unsigned tags
;
2099 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
2102 c
->next
= connections
;
2105 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
2108 disorder_error(0, "ev_writer_new for file inbound connection (fd=%d) failed",
2113 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
2116 /* Main reason for failure is the FD is too big and that will already have
2119 "ev_reader_new for file inbound connection (fd=%d) failed",
2123 c
->reader
= reader_callback
;
2126 c
->line_reader
= command
;
2128 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
2129 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
2131 config
->authorization_algorithm
,
2132 hex(c
->nonce
, sizeof c
->nonce
));
2136 int server_start(ev_source
*ev
, int pf
,
2137 size_t socklen
, const struct sockaddr
*sa
,
2140 struct listener
*l
= xmalloc(sizeof *l
);
2141 static const int one
= 1;
2143 D(("server_init socket %s", name
));
2144 fd
= xsocket(pf
, SOCK_STREAM
, 0);
2145 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
2146 if(bind(fd
, sa
, socklen
) < 0) {
2147 disorder_error(errno
, "error binding to %s", name
);
2155 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
2157 disorder_info("listening on %s", name
);
2161 int server_stop(ev_source
*ev
, int fd
) {
2163 return ev_listen_cancel(ev
, fd
);