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460b9539 1/*
2 * This file is part of DisOrder.
964e027d 3 * Copyright (C) 2004-2008 Richard Kettlewell
460b9539 4 *
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.
9 *
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.
14 *
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
18 * USA
19 */
20
05b75f8d 21#include "disorder-server.h"
460b9539 22
23#ifndef NONCE_SIZE
24# define NONCE_SIZE 16
25#endif
26
10114017 27#ifndef CONFIRM_SIZE
28# define CONFIRM_SIZE 10
29#endif
30
460b9539 31int volume_left, volume_right; /* last known volume */
32
18e6d6e6 33/** @brief Accept all well-formed login attempts
34 *
35 * Used in debugging.
36 */
37int wideopen;
38
460b9539 39struct listener {
40 const char *name;
41 int pf;
42};
43
397ef7bb 44/** @brief One client connection */
460b9539 45struct conn {
397ef7bb 46 /** @brief Read commands from here */
460b9539 47 ev_reader *r;
397ef7bb 48 /** @brief Send responses to here */
460b9539 49 ev_writer *w;
397ef7bb 50 /** @brief Underlying file descriptor */
460b9539 51 int fd;
397ef7bb 52 /** @brief Unique identifier for connection used in log messages */
460b9539 53 unsigned tag;
397ef7bb 54 /** @brief Login name or NULL */
460b9539 55 char *who;
397ef7bb 56 /** @brief Event loop */
460b9539 57 ev_source *ev;
397ef7bb 58 /** @brief Nonce chosen for this connection */
460b9539 59 unsigned char nonce[NONCE_SIZE];
397ef7bb
RK
60 /** @brief Current reader callback
61 *
62 * We change this depending on whether we're servicing the @b log command
63 */
460b9539 64 ev_reader_callback *reader;
397ef7bb 65 /** @brief Event log output sending to this connection */
460b9539 66 struct eventlog_output *lo;
397ef7bb 67 /** @brief Parent listener */
460b9539 68 const struct listener *l;
b12be54a
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69 /** @brief Login cookie or NULL */
70 char *cookie;
eb5dc014
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71 /** @brief Connection rights */
72 rights_type rights;
0126692c 73 /** @brief Next connection */
74 struct conn *next;
dd9af5cb
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75 /** @brief True if pending rescan had 'wait' set */
76 int rescan_wait;
460b9539 77};
78
0126692c 79/** @brief Linked list of connections */
80static struct conn *connections;
81
460b9539 82static int reader_callback(ev_source *ev,
83 ev_reader *reader,
460b9539 84 void *ptr,
85 size_t bytes,
86 int eof,
87 void *u);
88
89static const char *noyes[] = { "no", "yes" };
90
0126692c 91/** @brief Remove a connection from the connection list */
92static void remove_connection(struct conn *c) {
93 struct conn **cc;
94
95 for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next)
96 ;
97 if(*cc)
98 *cc = c->next;
99}
100
397ef7bb
RK
101/** @brief Called when a connection's writer fails or is shut down
102 *
103 * If the connection still has a raeder that is cancelled.
104 */
460b9539 105static int writer_error(ev_source attribute((unused)) *ev,
460b9539 106 int errno_value,
107 void *u) {
108 struct conn *c = u;
109
8d8b8c1f 110 D(("server writer_error S%x %d", c->tag, errno_value));
460b9539 111 if(errno_value == 0) {
112 /* writer is done */
8d8b8c1f 113 D(("S%x writer completed", c->tag));
460b9539 114 } else {
115 if(errno_value != EPIPE)
116 error(errno_value, "S%x write error on socket", c->tag);
38b8221f 117 if(c->r) {
8d8b8c1f 118 D(("cancel reader"));
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119 ev_reader_cancel(c->r);
120 c->r = 0;
121 }
8d8b8c1f 122 D(("done cancel reader"));
460b9539 123 }
38b8221f 124 c->w = 0;
75d64210 125 ev_report(ev);
0126692c 126 remove_connection(c);
460b9539 127 return 0;
128}
129
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130/** @brief Called when a conncetion's reader fails or is shut down
131 *
132 * If connection still has a writer then it is closed.
133 */
460b9539 134static int reader_error(ev_source attribute((unused)) *ev,
460b9539 135 int errno_value,
136 void *u) {
137 struct conn *c = u;
138
8d8b8c1f 139 D(("server reader_error S%x %d", c->tag, errno_value));
1563f6f6 140 error(errno_value, "S%x read error on socket", c->tag);
38b8221f
RK
141 if(c->w)
142 ev_writer_close(c->w);
143 c->w = 0;
144 c->r = 0;
768d7355 145 ev_report(ev);
0126692c 146 remove_connection(c);
460b9539 147 return 0;
148}
149
460b9539 150static int c_disable(struct conn *c, char **vec, int nvec) {
151 if(nvec == 0)
152 disable_playing(c->who);
153 else if(nvec == 1 && !strcmp(vec[0], "now"))
154 disable_playing(c->who);
155 else {
156 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
157 return 1; /* completed */
158 }
159 sink_writes(ev_writer_sink(c->w), "250 OK\n");
160 return 1; /* completed */
161}
162
163static 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 */
171}
172
173static 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 */
178}
179
180static int c_play(struct conn *c, char **vec,
181 int attribute((unused)) nvec) {
182 const char *track;
183 struct queue_entry *q;
184
185 if(!trackdb_exists(vec[0])) {
186 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
187 return 1;
188 }
189 if(!(track = trackdb_resolve(vec[0]))) {
190 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
191 return 1;
192 }
193 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
194 queue_write();
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
197 * anything. */
198 if(q == qhead.next && playing)
199 prepare(c->ev, q);
81e440ce 200 sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id);
460b9539 201 /* If the queue was empty but we are for some reason paused then
202 * unpause. */
203 if(!playing) resume_playing(0);
204 play(c->ev);
205 return 1; /* completed */
206}
207
208static int c_remove(struct conn *c, char **vec,
209 int attribute((unused)) nvec) {
210 struct queue_entry *q;
211
212 if(!(q = queue_find(vec[0]))) {
213 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
214 return 1;
215 }
938d8157 216 if(!right_removable(c->rights, c->who, q)) {
834e7c4a 217 error(0, "%s attempted remove but lacks required rights", c->who);
eb5dc014 218 sink_writes(ev_writer_sink(c->w),
b4a80f69 219 "510 Not authorized to remove that track\n");
eb5dc014 220 return 1;
460b9539 221 }
222 queue_remove(q, c->who);
223 /* De-prepare the track. */
224 abandon(c->ev, q);
49a773eb
RK
225 /* See about adding a new random track */
226 add_random_track(c->ev);
460b9539 227 /* Prepare whatever the next head track is. */
228 if(qhead.next != &qhead)
229 prepare(c->ev, qhead.next);
230 queue_write();
231 sink_writes(ev_writer_sink(c->w), "250 removed\n");
232 return 1; /* completed */
233}
234
235static int c_scratch(struct conn *c,
236 char **vec,
237 int nvec) {
238 if(!playing) {
239 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
240 return 1; /* completed */
241 }
eb5dc014
RK
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. */
938d8157 245 if(!right_scratchable(c->rights, c->who, playing)) {
834e7c4a 246 error(0, "%s attempted scratch but lacks required rights", c->who);
eb5dc014 247 sink_writes(ev_writer_sink(c->w),
b4a80f69 248 "510 Not authorized to scratch that track\n");
eb5dc014 249 return 1;
460b9539 250 }
251 scratch(c->who, nvec == 1 ? vec[0] : 0);
252 /* If you scratch an unpaused track then it is automatically unpaused */
253 resume_playing(0);
254 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
255 return 1; /* completed */
256}
257
258static int c_pause(struct conn *c,
259 char attribute((unused)) **vec,
260 int attribute((unused)) nvec) {
261 if(!playing) {
262 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
263 return 1; /* completed */
264 }
265 if(paused) {
266 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
267 return 1; /* completed */
268 }
269 if(pause_playing(c->who) < 0)
270 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
271 else
272 sink_writes(ev_writer_sink(c->w), "250 paused\n");
273 return 1;
274}
275
276static int c_resume(struct conn *c,
277 char attribute((unused)) **vec,
278 int attribute((unused)) nvec) {
279 if(!paused) {
280 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
281 return 1; /* completed */
282 }
283 resume_playing(c->who);
284 sink_writes(ev_writer_sink(c->w), "250 paused\n");
285 return 1;
286}
287
288static 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);
294 quit(c->ev);
295}
296
297static 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");
303 else
304 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
305 return 1; /* completed */
306}
307
dd9af5cb
RK
308static void finished_rescan(void *ru) {
309 struct conn *const c = ru;
310
311 sink_writes(ev_writer_sink(c->w), "250 rescan completed\n");
312 /* Turn this connection back on */
313 ev_reader_enable(c->r);
314}
315
316static void start_fresh_rescan(void *ru) {
317 struct conn *const c = ru;
318
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. */
323 if(c->rescan_wait) {
324 /* We block until the rescan completes */
325 trackdb_add_rescanned(finished_rescan, c);
326 } else {
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);
331 }
332 } else {
333 /* We are the first connection to get a callback so we must start a
334 * rescan. */
335 if(c->rescan_wait) {
336 /* We want to block until the new rescan completes */
337 trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c);
338 } else {
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);
344 }
345 }
346}
347
460b9539 348static int c_rescan(struct conn *c,
dd9af5cb
RK
349 char **vec,
350 int nvec) {
d867af10 351 int flag_wait = 0, flag_fresh = 0, n;
dd9af5cb
RK
352
353 /* Parse flags */
354 for(n = 0; n < nvec; ++n) {
355 if(!strcmp(vec[n], "wait"))
d867af10 356 flag_wait = 1; /* wait for rescan to complete */
dd9af5cb
RK
357#if 0
358 /* Currently disabled because untested (and hard to test). */
359 else if(!strcmp(vec[n], "fresh"))
d867af10 360 flag_fresh = 1; /* don't piggyback underway rescan */
dd9af5cb
RK
361#endif
362 else {
363 sink_writes(ev_writer_sink(c->w), "550 unknown flag\n");
364 return 1; /* completed */
365 }
366 }
367 /* Report what was requested */
368 info("S%x rescan by %s (%s %s)", c->tag, c->who,
d867af10
RK
369 flag_wait ? "wait" : "",
370 flag_fresh ? "fresh" : "");
dd9af5cb 371 if(trackdb_rescan_underway()) {
d867af10 372 if(flag_fresh) {
dd9af5cb
RK
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. */
d867af10 375 c->rescan_wait = flag_wait;
dd9af5cb 376 trackdb_add_rescanned(start_fresh_rescan, c);
d867af10 377 if(flag_wait)
dd9af5cb
RK
378 return 0;
379 else {
380 sink_writes(ev_writer_sink(c->w), "250 rescan queued\n");
381 return 1;
382 }
383 } else {
384 /* There's a rescan underway, and it's acceptable to piggyback on it */
d867af10 385 if(flag_wait) {
dd9af5cb
RK
386 /* We want to block until completion. */
387 trackdb_add_rescanned(finished_rescan, c);
388 return 0;
389 } else {
390 /* We don't want to block. So we just report that things are in
391 * hand. */
392 sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n");
393 return 1;
394 }
395 }
396 } else {
397 /* No rescan is underway. fresh is therefore irrelevant. */
d867af10 398 if(flag_wait) {
dd9af5cb
RK
399 /* We want to block until completion */
400 trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c);
401 return 0;
402 } else {
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 */
407 }
408 }
460b9539 409}
410
411static 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 */
a05e4467 415 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string);
460b9539 416 return 1; /* completed */
417}
418
419static int c_playing(struct conn *c,
420 char attribute((unused)) **vec,
421 int attribute((unused)) nvec) {
422 if(playing) {
423 queue_fix_sofar(playing);
424 playing->expected = 0;
425 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
426 } else
427 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
428 return 1; /* completed */
429}
430
b12be54a 431static const char *connection_host(struct conn *c) {
460b9539 432 union {
433 struct sockaddr sa;
434 struct sockaddr_in in;
435 struct sockaddr_in6 in6;
436 } u;
437 socklen_t l;
b12be54a 438 int n;
460b9539 439 char host[1024];
440
460b9539 441 /* get connection data */
442 l = sizeof u;
443 if(getpeername(c->fd, &u.sa, &l) < 0) {
444 error(errno, "S%x error calling getpeername", c->tag);
b12be54a 445 return 0;
460b9539 446 }
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));
b12be54a 451 return 0;
460b9539 452 }
b12be54a 453 return xstrdup(host);
18e6d6e6 454 } else
b12be54a
RK
455 return "local";
456}
457
458static int c_user(struct conn *c,
459 char **vec,
460 int attribute((unused)) nvec) {
eb5dc014 461 struct kvp *k;
f0feb22e 462 const char *res, *host, *password;
eb5dc014 463 rights_type rights;
b12be54a
RK
464
465 if(c->who) {
466 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
467 return 1;
468 }
469 /* get connection data */
470 if(!(host = connection_host(c))) {
471 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
472 return 1;
473 }
460b9539 474 /* find the user */
eb5dc014 475 k = trackdb_getuserinfo(vec[0]);
f0feb22e 476 /* reject nonexistent users */
eb5dc014
RK
477 if(!k) {
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");
480 return 1;
481 }
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");
486 return 1;
487 }
488 password = kvp_get(k, "password");
489 if(!password) password = "";
0f55e905 490 if(parse_rights(kvp_get(k, "rights"), &rights, 1)) {
eb5dc014 491 error(0, "error parsing rights for %s", vec[0]);
18e6d6e6 492 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
493 return 1;
494 }
f0feb22e
RK
495 /* check whether the response is right */
496 res = authhash(c->nonce, sizeof c->nonce, password,
637fdea3 497 config->authorization_algorithm);
18e6d6e6 498 if(wideopen || (res && !strcmp(res, vec[1]))) {
499 c->who = vec[0];
eb5dc014 500 c->rights = rights;
18e6d6e6 501 /* currently we only bother logging remote connections */
30365519 502 if(strcmp(host, "local"))
18e6d6e6 503 info("S%x %s connected from %s", c->tag, vec[0], host);
30365519 504 else
eb5dc014 505 c->rights |= RIGHT__LOCAL;
18e6d6e6 506 sink_writes(ev_writer_sink(c->w), "230 OK\n");
507 return 1;
460b9539 508 }
509 /* oops, response was wrong */
18e6d6e6 510 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
460b9539 511 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
512 return 1;
513}
514
515static int c_recent(struct conn *c,
516 char attribute((unused)) **vec,
517 int attribute((unused)) nvec) {
518 const struct queue_entry *q;
519
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 */
525}
526
527static int c_queue(struct conn *c,
528 char attribute((unused)) **vec,
529 int attribute((unused)) nvec) {
530 struct queue_entry *q;
531 time_t when = 0;
532 const char *l;
533 long length;
534
535 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
536 if(playing_is_enabled() && !paused) {
537 if(playing) {
538 queue_fix_sofar(playing);
539 if((l = trackdb_get(playing->track, "_length"))
540 && (length = atol(l))) {
541 time(&when);
542 when += length - playing->sofar + config->gap;
543 }
544 } else
545 /* Nothing is playing but playing is enabled, so whatever is
546 * first in the queue can be expected to start immediately. */
547 time(&when);
548 }
549 for(q = qhead.next; q != &qhead; q = q->next) {
550 /* fill in estimated start time */
551 q->expected = when;
552 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
553 /* update for next track */
554 if(when) {
555 if((l = trackdb_get(q->track, "_length"))
556 && (length = atol(l)))
557 when += length + config->gap;
558 else
559 when = 0;
560 }
561 }
562 sink_writes(ev_writer_sink(c->w), ".\n");
563 return 1; /* completed */
564}
565
566static int output_list(struct conn *c, char **vec) {
567 while(*vec)
568 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
569 sink_writes(ev_writer_sink(c->w), ".\n");
570 return 1;
571}
572
573static int files_dirs(struct conn *c,
574 char **vec,
575 int nvec,
576 enum trackdb_listable what) {
577 const char *dir, *re, *errstr;
578 int erroffset;
579 pcre *rec;
580 char **fvec, *key;
581
582 switch(nvec) {
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;
586 default: abort();
587 }
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");
591 return 1;
592 }
593 if(re && strchr(re, '\n')) {
594 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
595 return 1;
596 }
597 /* We bother eliminating "" because the web interface is relatively
598 * likely to send it */
599 if(re && *re) {
600 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
601 fvec = (char **)cache_get(&cache_files_type, key);
602 if(fvec) {
603 /* Got a cache hit, don't store the answer in the cache */
604 key = 0;
605 ++cache_files_hits;
606 rec = 0; /* quieten compiler */
607 } else {
608 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
609 * in the cache. */
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",
613 errstr);
614 return 1;
615 }
616 /* It only counts as a miss if the regexp was valid. */
617 ++cache_files_misses;
618 }
619 } else {
620 /* No regexp, don't bother caching the result */
621 rec = 0;
622 key = 0;
623 fvec = 0;
624 }
625 if(!fvec) {
626 /* No cache hit (either because a miss, or because we did not look) so do
627 * the lookup */
628 if(dir && *dir)
629 fvec = trackdb_list(dir, 0, what, rec);
630 else
631 fvec = trackdb_list(0, 0, what, rec);
632 }
633 if(key)
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);
638}
639
640static int c_files(struct conn *c,
641 char **vec,
642 int nvec) {
643 return files_dirs(c, vec, nvec, trackdb_files);
644}
645
646static int c_dirs(struct conn *c,
647 char **vec,
648 int nvec) {
649 return files_dirs(c, vec, nvec, trackdb_directories);
650}
651
652static int c_allfiles(struct conn *c,
653 char **vec,
654 int nvec) {
655 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
656}
657
658static int c_get(struct conn *c,
659 char **vec,
660 int attribute((unused)) nvec) {
27ed5a69 661 const char *v, *track;
460b9539 662
27ed5a69
RK
663 if(!(track = trackdb_resolve(vec[0]))) {
664 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
665 return 1;
666 }
667 if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1])))
7b32e917 668 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v));
460b9539 669 else
fb1bc1f5 670 sink_writes(ev_writer_sink(c->w), "555 not found\n");
460b9539 671 return 1;
672}
673
674static int c_length(struct conn *c,
675 char **vec,
676 int attribute((unused)) nvec) {
677 const char *track, *v;
678
679 if(!(track = trackdb_resolve(vec[0]))) {
680 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
681 return 1;
682 }
683 if((v = trackdb_get(track, "_length")))
7b32e917 684 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v));
460b9539 685 else
686 sink_writes(ev_writer_sink(c->w), "550 not found\n");
687 return 1;
688}
689
690static int c_set(struct conn *c,
691 char **vec,
692 int attribute((unused)) nvec) {
27ed5a69
RK
693 const char *track;
694
695 if(!(track = trackdb_resolve(vec[0]))) {
696 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
697 return 1;
698 }
699 if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2]))
460b9539 700 sink_writes(ev_writer_sink(c->w), "250 OK\n");
701 else
702 sink_writes(ev_writer_sink(c->w), "550 not found\n");
703 return 1;
704}
705
706static int c_prefs(struct conn *c,
707 char **vec,
708 int attribute((unused)) nvec) {
709 struct kvp *k;
27ed5a69 710 const char *track;
460b9539 711
27ed5a69
RK
712 if(!(track = trackdb_resolve(vec[0]))) {
713 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
714 return 1;
715 }
716 k = trackdb_get_all(track);
460b9539 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");
723 return 1;
724}
725
726static int c_exists(struct conn *c,
727 char **vec,
728 int attribute((unused)) nvec) {
27ed5a69 729 /* trackdb_exists() does its own alias checking */
460b9539 730 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
731 return 1;
732}
733
734static void search_parse_error(const char *msg, void *u) {
735 *(const char **)u = msg;
736}
737
738static int c_search(struct conn *c,
739 char **vec,
740 int attribute((unused)) nvec) {
741 char **terms, **results;
742 int nterms, nresults, n;
743 const char *e = "unknown error";
744
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);
751 } else {
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");
757 }
758 return 1;
759}
760
761static 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 */
769}
770
771static 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 */
777}
778
779static 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 */
784}
785
d6dde5a3
RK
786static void got_stats(char *stats, void *u) {
787 struct conn *const c = u;
788
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);
792}
793
460b9539 794static int c_stats(struct conn *c,
795 char attribute((unused)) **vec,
796 int attribute((unused)) nvec) {
d6dde5a3
RK
797 trackdb_stats_subprocess(c->ev, got_stats, c);
798 return 0; /* not yet complete */
460b9539 799}
800
801static int c_volume(struct conn *c,
802 char **vec,
803 int nvec) {
804 int l, r, set;
805 char lb[32], rb[32];
eb5dc014 806 rights_type rights;
460b9539 807
808 switch(nvec) {
809 case 0:
810 set = 0;
811 break;
812 case 1:
813 l = r = atoi(vec[0]);
814 set = 1;
815 break;
816 case 2:
817 l = atoi(vec[0]);
818 r = atoi(vec[1]);
819 set = 1;
820 break;
821 default:
822 abort();
823 }
eb5dc014
RK
824 rights = set ? RIGHT_VOLUME : RIGHT_READ;
825 if(!(c->rights & rights)) {
834e7c4a 826 error(0, "%s attempted to set volume but lacks required rights", c->who);
b4a80f69 827 sink_writes(ev_writer_sink(c->w), "510 Prohibited\n");
eb5dc014
RK
828 return 1;
829 }
3c499fe7 830 if(mixer_control(-1/*as configured*/, &l, &r, set))
460b9539 831 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
832 else {
833 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
834 if(l != volume_left || r != volume_right) {
835 volume_left = l;
836 volume_right = r;
837 snprintf(lb, sizeof lb, "%d", l);
838 snprintf(rb, sizeof rb, "%d", r);
839 eventlog("volume", lb, rb, (char *)0);
840 }
841 }
842 return 1;
843}
844
397ef7bb
RK
845/** @brief Called when data arrives on a log connection
846 *
847 * We just discard all such data. The client may occasionally send data as a
848 * keepalive.
849 */
850static int logging_reader_callback(ev_source attribute((unused)) *ev,
460b9539 851 ev_reader *reader,
397ef7bb 852 void attribute((unused)) *ptr,
460b9539 853 size_t bytes,
397ef7bb
RK
854 int attribute((unused)) eof,
855 void attribute((unused)) *u) {
460b9539 856 struct conn *c = u;
857
397ef7bb
RK
858 ev_reader_consume(reader, bytes);
859 if(eof) {
860 /* Oops, that's all for now */
8d8b8c1f 861 D(("logging reader eof"));
397ef7bb 862 if(c->w) {
8d8b8c1f 863 D(("close writer"));
397ef7bb
RK
864 ev_writer_close(c->w);
865 c->w = 0;
866 }
867 c->r = 0;
0126692c 868 remove_connection(c);
f6033c46 869 }
397ef7bb 870 return 0;
460b9539 871}
872
873static void logclient(const char *msg, void *user) {
874 struct conn *c = user;
875
f6033c46
RK
876 if(!c->w || !c->r) {
877 /* This connection has gone up in smoke for some reason */
878 eventlog_remove(c->lo);
ad492e00 879 c->lo = 0;
f6033c46
RK
880 return;
881 }
75e7b7c3
RK
882 /* user_* messages are restricted */
883 if(!strncmp(msg, "user_", 5)) {
58d2aad2
RK
884 /* They are only sent to admin users */
885 if(!(c->rights & RIGHT_ADMIN))
886 return;
887 /* They are not sent over TCP connections unless remote user-management is
888 * enabled */
889 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL))
890 return;
891 }
460b9539 892 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
893 (uintmax_t)time(0), msg);
894}
895
896static int c_log(struct conn *c,
897 char attribute((unused)) **vec,
898 int attribute((unused)) nvec) {
899 time_t now;
900
901 sink_writes(ev_writer_sink(c->w), "254 OK\n");
902 /* pump out initial state */
903 time(&now);
904 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
905 (uintmax_t)now,
906 playing_is_enabled() ? "enable_play" : "disable_play");
907 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
908 (uintmax_t)now,
909 random_is_enabled() ? "enable_random" : "disable_random");
910 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
911 (uintmax_t)now,
912 paused ? "pause" : "resume");
5abe307a
RK
913 if(playing)
914 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
915 (uintmax_t)now);
df44d69b
RK
916 /* Initial volume */
917 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
918 (uintmax_t)now, volume_left, volume_right);
460b9539 919 c->lo = xmalloc(sizeof *c->lo);
920 c->lo->fn = logclient;
921 c->lo->user = c;
922 eventlog_add(c->lo);
923 c->reader = logging_reader_callback;
924 return 0;
925}
926
eb5dc014
RK
927/** @brief Test whether a move is allowed
928 * @param c Connection
929 * @param qs List of IDs on queue
930 * @param nqs Number of IDs
931 * @return 0 if move is prohibited, non-0 if it is allowed
932 */
933static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) {
eb5dc014
RK
934 for(; nqs > 0; ++qs, --nqs) {
935 struct queue_entry *const q = *qs;
936
938d8157 937 if(!right_movable(c->rights, c->who, q))
938 return 0;
eb5dc014 939 }
938d8157 940 return 1;
eb5dc014
RK
941}
942
460b9539 943static int c_move(struct conn *c,
944 char **vec,
945 int attribute((unused)) nvec) {
946 struct queue_entry *q;
947 int n;
948
460b9539 949 if(!(q = queue_find(vec[0]))) {
950 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
951 return 1;
952 }
eb5dc014 953 if(!has_move_rights(c, &q, 1)) {
834e7c4a 954 error(0, "%s attempted move but lacks required rights", c->who);
eb5dc014 955 sink_writes(ev_writer_sink(c->w),
b4a80f69 956 "510 Not authorized to move that track\n");
eb5dc014
RK
957 return 1;
958 }
460b9539 959 n = queue_move(q, atoi(vec[1]), c->who);
460b9539 960 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
961 /* If we've moved to the head of the queue then prepare the track. */
962 if(q == qhead.next)
963 prepare(c->ev, q);
964 return 1;
965}
966
967static int c_moveafter(struct conn *c,
968 char **vec,
969 int attribute((unused)) nvec) {
970 struct queue_entry *q, **qs;
971 int n;
972
460b9539 973 if(vec[0][0]) {
974 if(!(q = queue_find(vec[0]))) {
975 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
976 return 1;
977 }
978 } else
979 q = 0;
980 ++vec;
981 --nvec;
982 qs = xcalloc(nvec, sizeof *qs);
983 for(n = 0; n < nvec; ++n)
984 if(!(qs[n] = queue_find(vec[n]))) {
985 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
986 return 1;
987 }
eb5dc014 988 if(!has_move_rights(c, qs, nvec)) {
834e7c4a 989 error(0, "%s attempted moveafter but lacks required rights", c->who);
eb5dc014 990 sink_writes(ev_writer_sink(c->w),
b4a80f69 991 "510 Not authorized to move those tracks\n");
eb5dc014
RK
992 return 1;
993 }
460b9539 994 queue_moveafter(q, nvec, qs, c->who);
460b9539 995 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
996 /* If we've moved to the head of the queue then prepare the track. */
997 if(q == qhead.next)
998 prepare(c->ev, q);
999 return 1;
1000}
1001
1002static int c_part(struct conn *c,
1003 char **vec,
1004 int attribute((unused)) nvec) {
27ed5a69
RK
1005 const char *track;
1006
1007 if(!(track = trackdb_resolve(vec[0]))) {
1008 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
1009 return 1;
1010 }
460b9539 1011 sink_printf(ev_writer_sink(c->w), "252 %s\n",
27ed5a69 1012 quoteutf8(trackdb_getpart(track, vec[1], vec[2])));
460b9539 1013 return 1;
1014}
1015
1016static int c_resolve(struct conn *c,
1017 char **vec,
1018 int attribute((unused)) nvec) {
1019 const char *track;
1020
1021 if(!(track = trackdb_resolve(vec[0]))) {
1022 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
1023 return 1;
1024 }
7b32e917 1025 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track));
460b9539 1026 return 1;
1027}
1028
1029static int c_tags(struct conn *c,
1030 char attribute((unused)) **vec,
1031 int attribute((unused)) nvec) {
1032 char **tags = trackdb_alltags();
1033
1034 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
1035 while(*tags) {
1036 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1037 **tags == '.' ? "." : "", *tags);
1038 ++tags;
1039 }
1040 sink_writes(ev_writer_sink(c->w), ".\n");
1041 return 1; /* completed */
460b9539 1042}
1043
1044static int c_set_global(struct conn *c,
1045 char **vec,
1046 int attribute((unused)) nvec) {
f9635e06
RK
1047 if(vec[0][0] == '_') {
1048 sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n");
1049 return 1;
1050 }
460b9539 1051 trackdb_set_global(vec[0], vec[1], c->who);
1052 sink_printf(ev_writer_sink(c->w), "250 OK\n");
1053 return 1;
1054}
1055
1056static int c_get_global(struct conn *c,
1057 char **vec,
1058 int attribute((unused)) nvec) {
1059 const char *s = trackdb_get_global(vec[0]);
1060
1061 if(s)
7b32e917 1062 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s));
460b9539 1063 else
fb1bc1f5 1064 sink_writes(ev_writer_sink(c->w), "555 not found\n");
460b9539 1065 return 1;
1066}
1067
7858930d 1068static int c_nop(struct conn *c,
1069 char attribute((unused)) **vec,
1070 int attribute((unused)) nvec) {
1071 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
1072 return 1;
1073}
1074
2a10b70b
RK
1075static int c_new(struct conn *c,
1076 char **vec,
1077 int nvec) {
d742bb47
RK
1078 int max, n;
1079 char **tracks;
2a10b70b 1080
d742bb47
RK
1081 if(nvec > 0)
1082 max = atoi(vec[0]);
1083 else
1084 max = INT_MAX;
1085 if(max <= 0 || max > config->new_max)
1086 max = config->new_max;
1087 tracks = trackdb_new(0, max);
2a10b70b 1088 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
d742bb47 1089 n = 0;
2a10b70b
RK
1090 while(*tracks) {
1091 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1092 **tracks == '.' ? "." : "", *tracks);
1093 ++tracks;
1094 }
1095 sink_writes(ev_writer_sink(c->w), ".\n");
1096 return 1; /* completed */
1097
1098}
1099
ca831831
RK
1100static int c_rtp_address(struct conn *c,
1101 char attribute((unused)) **vec,
1102 int attribute((unused)) nvec) {
bd8895a8 1103 if(config->api == BACKEND_NETWORK) {
ca831831
RK
1104 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
1105 quoteutf8(config->broadcast.s[0]),
1106 quoteutf8(config->broadcast.s[1]));
1107 } else
1108 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
1109 return 1;
1110}
b12be54a
RK
1111
1112static int c_cookie(struct conn *c,
1113 char **vec,
1114 int attribute((unused)) nvec) {
1115 const char *host;
1116 char *user;
eb5dc014 1117 rights_type rights;
b12be54a
RK
1118
1119 /* Can't log in twice on the same connection */
1120 if(c->who) {
1121 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
1122 return 1;
1123 }
1124 /* Get some kind of peer identifcation */
1125 if(!(host = connection_host(c))) {
1126 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
1127 return 1;
1128 }
1129 /* Check the cookie */
eb5dc014 1130 user = verify_cookie(vec[0], &rights);
b12be54a
RK
1131 if(!user) {
1132 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
1133 return 1;
1134 }
1135 /* Log in */
e48c28bb 1136 c->who = user;
b12be54a 1137 c->cookie = vec[0];
eb5dc014 1138 c->rights = rights;
30365519 1139 if(strcmp(host, "local"))
b12be54a 1140 info("S%x %s connected with cookie from %s", c->tag, user, host);
30365519 1141 else
eb5dc014 1142 c->rights |= RIGHT__LOCAL;
0227f67d
RK
1143 /* Response contains username so client knows who they are acting as */
1144 sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user));
b12be54a
RK
1145 return 1;
1146}
1147
1148static int c_make_cookie(struct conn *c,
1149 char attribute((unused)) **vec,
1150 int attribute((unused)) nvec) {
1151 const char *cookie = make_cookie(c->who);
1152
1153 if(cookie)
eb5dc014 1154 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie));
b12be54a
RK
1155 else
1156 sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n");
1157 return 1;
1158}
1159
1160static int c_revoke(struct conn *c,
1161 char attribute((unused)) **vec,
1162 int attribute((unused)) nvec) {
1163 if(c->cookie) {
1164 revoke_cookie(c->cookie);
1165 sink_writes(ev_writer_sink(c->w), "250 OK\n");
1166 } else
1167 sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n");
1168 return 1;
1169}
1170
f0feb22e
RK
1171static int c_adduser(struct conn *c,
1172 char **vec,
0f55e905
RK
1173 int nvec) {
1174 const char *rights;
1175
810b8083 1176 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1177 error(0, "S%x: remote adduser", c->tag);
810b8083
RK
1178 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1179 return 1;
1180 }
0f55e905
RK
1181 if(nvec > 2) {
1182 rights = vec[2];
1183 if(parse_rights(vec[2], 0, 1)) {
1184 sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n");
1185 return -1;
1186 }
1187 } else
1188 rights = config->default_rights;
1189 if(trackdb_adduser(vec[0], vec[1], rights,
ba39faf6 1190 0/*email*/, 0/*confirmation*/))
f0feb22e
RK
1191 sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
1192 else
1193 sink_writes(ev_writer_sink(c->w), "250 User created\n");
1194 return 1;
1195}
1196
1197static int c_deluser(struct conn *c,
1198 char **vec,
1199 int attribute((unused)) nvec) {
0126692c 1200 struct conn *d;
1201
810b8083 1202 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1203 error(0, "S%x: remote deluser", c->tag);
810b8083
RK
1204 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1205 return 1;
1206 }
0126692c 1207 if(trackdb_deluser(vec[0])) {
ba39faf6 1208 sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n");
0126692c 1209 return 1;
1210 }
1211 /* Zap connections belonging to deleted user */
1212 for(d = connections; d; d = d->next)
1213 if(!strcmp(d->who, vec[0]))
1214 d->rights = 0;
1215 sink_writes(ev_writer_sink(c->w), "250 User deleted\n");
f0feb22e
RK
1216 return 1;
1217}
1218
1219static int c_edituser(struct conn *c,
5df73aeb 1220 char **vec,
f0feb22e 1221 int attribute((unused)) nvec) {
0126692c 1222 struct conn *d;
1223
810b8083 1224 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1225 error(0, "S%x: remote edituser", c->tag);
810b8083
RK
1226 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1227 return 1;
1228 }
eb5dc014
RK
1229 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1230 * address and password. */
1231 if((c->rights & RIGHT_ADMIN)
5df73aeb
RK
1232 || (!strcmp(c->who, vec[0])
1233 && (!strcmp(vec[1], "email")
1234 || !strcmp(vec[1], "password")))) {
0126692c 1235 if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) {
5df73aeb 1236 sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n");
0126692c 1237 return 1;
1238 }
1239 if(!strcmp(vec[1], "password")) {
1240 /* Zap all connections for this user after a password change */
1241 for(d = connections; d; d = d->next)
1242 if(!strcmp(d->who, vec[0]))
1243 d->rights = 0;
1244 } else if(!strcmp(vec[1], "rights")) {
1245 /* Update rights for this user */
1246 rights_type r;
1247
ad492e00
RK
1248 if(!parse_rights(vec[2], &r, 1)) {
1249 const char *new_rights = rights_string(r);
1250 for(d = connections; d; d = d->next) {
1251 if(!strcmp(d->who, vec[0])) {
1252 /* Update rights */
0126692c 1253 d->rights = r;
ad492e00
RK
1254 /* Notify any log connections */
1255 if(d->lo)
1256 sink_printf(ev_writer_sink(d->w),
75e7b7c3 1257 "%"PRIxMAX" rights_changed %s\n",
ad492e00 1258 (uintmax_t)time(0),
75e7b7c3 1259 quoteutf8(new_rights));
ad492e00
RK
1260 }
1261 }
1262 }
0126692c 1263 }
1264 sink_writes(ev_writer_sink(c->w), "250 OK\n");
834e7c4a 1265 } else {
1266 error(0, "%s attempted edituser but lacks required rights", c->who);
b4a80f69 1267 sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n");
834e7c4a 1268 }
f0feb22e
RK
1269 return 1;
1270}
1271
1272static int c_userinfo(struct conn *c,
1273 char attribute((unused)) **vec,
1274 int attribute((unused)) nvec) {
5df73aeb
RK
1275 struct kvp *k;
1276 const char *value;
eb5dc014 1277
39e7dcfb
RK
1278 /* We allow remote querying of rights so that clients can figure out what
1279 * they're allowed to do */
1280 if(!config->remote_userman
1281 && !(c->rights & RIGHT__LOCAL)
1282 && strcmp(vec[1], "rights")) {
1283 error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]);
810b8083
RK
1284 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1285 return 1;
1286 }
eb5dc014 1287 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
29f5fbd2 1288 * address and rights list. */
eb5dc014 1289 if((c->rights & RIGHT_ADMIN)
5df73aeb
RK
1290 || (!strcmp(c->who, vec[0])
1291 && (!strcmp(vec[1], "email")
1292 || !strcmp(vec[1], "rights")))) {
1293 if((k = trackdb_getuserinfo(vec[0])))
1294 if((value = kvp_get(k, vec[1])))
1295 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value));
1296 else
1297 sink_writes(ev_writer_sink(c->w), "555 Not set\n");
1298 else
1299 sink_writes(ev_writer_sink(c->w), "550 No such user\n");
834e7c4a 1300 } else {
1301 error(0, "%s attempted userinfo but lacks required rights", c->who);
b4a80f69 1302 sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n");
834e7c4a 1303 }
f0feb22e
RK
1304 return 1;
1305}
1306
c3be4f19
RK
1307static int c_users(struct conn *c,
1308 char attribute((unused)) **vec,
1309 int attribute((unused)) nvec) {
1310 /* TODO de-dupe with c_tags */
1311 char **users = trackdb_listusers();
1312
1313 sink_writes(ev_writer_sink(c->w), "253 User list follows\n");
1314 while(*users) {
1315 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1316 **users == '.' ? "." : "", *users);
1317 ++users;
1318 }
1319 sink_writes(ev_writer_sink(c->w), ".\n");
1320 return 1; /* completed */
1321}
1322
86e3aea7 1323/** @brief Base64 mapping table for confirmation strings
1324 *
1325 * This is used with generic_to_base64() and generic_base64(). We cannot use
1326 * the MIME table as that contains '+' and '=' which get quoted when
1327 * URL-encoding. (The CGI still does the URL encoding but it is desirable to
1328 * avoid it being necessary.)
1329 */
1330static const char confirm_base64_table[] =
1331 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*";
1332
ba39faf6
RK
1333static int c_register(struct conn *c,
1334 char **vec,
1335 int attribute((unused)) nvec) {
1336 char *buf, *cs;
1337 size_t bufsize;
1338 int offset;
1339
1340 /* The confirmation string is base64(username;nonce) */
10114017 1341 bufsize = strlen(vec[0]) + CONFIRM_SIZE + 2;
ba39faf6
RK
1342 buf = xmalloc_noptr(bufsize);
1343 offset = byte_snprintf(buf, bufsize, "%s;", vec[0]);
10114017 1344 gcry_randomize(buf + offset, CONFIRM_SIZE, GCRY_STRONG_RANDOM);
86e3aea7 1345 cs = generic_to_base64((uint8_t *)buf, offset + CONFIRM_SIZE,
1346 confirm_base64_table);
ba39faf6
RK
1347 if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs))
1348 sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
1349 else
1350 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs));
1351 return 1;
1352}
1353
1354static int c_confirm(struct conn *c,
1355 char **vec,
1356 int attribute((unused)) nvec) {
1357 size_t nuser;
1358 char *user, *sep;
30365519 1359 rights_type rights;
1360 const char *host;
ba39faf6 1361
30365519 1362 /* Get some kind of peer identifcation */
1363 if(!(host = connection_host(c))) {
1364 sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n");
1365 return 1;
1366 }
86e3aea7 1367 if(!(user = generic_base64(vec[0], &nuser, confirm_base64_table))
ba39faf6
RK
1368 || !(sep = memchr(user, ';', nuser))) {
1369 sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n");
1370 return 1;
1371 }
1372 *sep = 0;
30365519 1373 if(trackdb_confirm(user, vec[0], &rights))
ba39faf6 1374 sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n");
30365519 1375 else {
1376 c->who = user;
1377 c->cookie = 0;
1378 c->rights = rights;
1379 if(strcmp(host, "local"))
1380 info("S%x %s confirmed from %s", c->tag, user, host);
1381 else
1382 c->rights |= RIGHT__LOCAL;
1383 /* Response contains username so client knows who they are acting as */
1384 sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user));
1385 }
ba39faf6
RK
1386 return 1;
1387}
6207d2f3 1388
1389static int sent_reminder(ev_source attribute((unused)) *ev,
1390 pid_t attribute((unused)) pid,
1391 int status,
1392 const struct rusage attribute((unused)) *rusage,
1393 void *u) {
1394 struct conn *const c = u;
1395
1396 /* Tell the client what went down */
1397 if(!status) {
1398 sink_writes(ev_writer_sink(c->w), "250 OK\n");
1399 } else {
1400 error(0, "reminder subprocess %s", wstat(status));
1401 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1402 }
1403 /* Re-enable this connection */
1404 ev_reader_enable(c->r);
1405 return 0;
1406}
1407
1408static int c_reminder(struct conn *c,
1409 char **vec,
1410 int attribute((unused)) nvec) {
1411 struct kvp *k;
1412 const char *password, *email, *text, *encoding, *charset, *content_type;
1413 const time_t *last;
1414 time_t now;
1415 pid_t pid;
1416
1417 static hash *last_reminder;
1418
1419 if(!config->mail_sender) {
1420 error(0, "cannot send password reminders because mail_sender not set");
1421 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1422 return 1;
1423 }
1424 if(!(k = trackdb_getuserinfo(vec[0]))) {
1425 error(0, "reminder for user '%s' who does not exist", vec[0]);
1426 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1427 return 1;
1428 }
1429 if(!(email = kvp_get(k, "email"))
33e95f03 1430 || !email_valid(email)) {
6207d2f3 1431 error(0, "user '%s' has no valid email address", vec[0]);
1432 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1433 return 1;
1434 }
1435 if(!(password = kvp_get(k, "password"))
1436 || !*password) {
1437 error(0, "user '%s' has no password", vec[0]);
1438 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1439 return 1;
1440 }
1441 /* Rate-limit reminders. This hash is bounded in size by the number of
1442 * users. If this is actually a problem for anyone then we can periodically
1443 * clean it. */
1444 if(!last_reminder)
1445 last_reminder = hash_new(sizeof (time_t));
1446 last = hash_find(last_reminder, vec[0]);
1447 time(&now);
1448 if(last && now < *last + config->reminder_interval) {
1449 error(0, "sent a password reminder to '%s' too recently", vec[0]);
1450 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1451 return 1;
1452 }
1453 /* Send the reminder */
1454 /* TODO this should be templatized and to some extent merged with
1455 * the code in act_register() */
1456 byte_xasprintf((char **)&text,
1457"Someone requested that you be sent a reminder of your DisOrder password.\n"
1458"Your password is:\n"
1459"\n"
1460" %s\n", password);
1461 if(!(text = mime_encode_text(text, &charset, &encoding)))
1462 fatal(0, "cannot encode email");
1463 byte_xasprintf((char **)&content_type, "text/plain;charset=%s",
1464 quote822(charset, 0));
1465 pid = sendmail_subprocess("", config->mail_sender, email,
1466 "DisOrder password reminder",
1467 encoding, content_type, text);
1468 if(pid < 0) {
1469 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1470 return 1;
1471 }
1472 hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE);
1473 info("sending a passsword reminder to user '%s'", vec[0]);
1474 /* We can only continue when the subprocess finishes */
1475 ev_child(c->ev, pid, 0, sent_reminder, c);
1476 return 0;
1477}
1478
2b33c4cf
RK
1479static int c_schedule_list(struct conn *c,
1480 char attribute((unused)) **vec,
1481 int attribute((unused)) nvec) {
1482 char **ids = schedule_list(0);
1483 sink_writes(ev_writer_sink(c->w), "253 ID list follows\n");
1484 while(*ids)
1485 sink_printf(ev_writer_sink(c->w), "%s\n", *ids++);
1486 sink_writes(ev_writer_sink(c->w), ".\n");
1487 return 1; /* completed */
1488}
1489
1490static int c_schedule_get(struct conn *c,
1491 char **vec,
1492 int attribute((unused)) nvec) {
1493 struct kvp *actiondata = schedule_get(vec[0]), *k;
1494
1495 if(!actiondata) {
1496 sink_writes(ev_writer_sink(c->w), "555 No such event\n");
1497 return 1; /* completed */
1498 }
1499 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1500 * them. */
1501 sink_writes(ev_writer_sink(c->w), "253 Event information follows\n");
1502 for(k = actiondata; k; k = k->next)
1503 sink_printf(ev_writer_sink(c->w), " %s %s\n",
1504 quoteutf8(k->name), quoteutf8(k->value));
1505 sink_writes(ev_writer_sink(c->w), ".\n");
1506 return 1; /* completed */
1507}
1508
1509static int c_schedule_del(struct conn *c,
1510 char **vec,
1511 int attribute((unused)) nvec) {
1512 struct kvp *actiondata = schedule_get(vec[0]);
1513
1514 if(!actiondata) {
1515 sink_writes(ev_writer_sink(c->w), "555 No such event\n");
1516 return 1; /* completed */
1517 }
1518 /* If you have admin rights you can delete anything. If you don't then you
1519 * can only delete your own scheduled events. */
1520 if(!(c->rights & RIGHT_ADMIN)) {
1521 const char *who = kvp_get(actiondata, "who");
1522
1523 if(!who || !c->who || strcmp(who, c->who)) {
1524 sink_writes(ev_writer_sink(c->w), "551 Not authorized\n");
1525 return 1; /* completed */
1526 }
1527 }
1528 if(schedule_del(vec[0]))
1529 sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n");
1530 else
1531 sink_writes(ev_writer_sink(c->w), "250 Deleted\n");
1532 return 1; /* completed */
1533}
1534
1535static int c_schedule_add(struct conn *c,
1536 char **vec,
1537 int nvec) {
1538 struct kvp *actiondata = 0;
067eeb5f 1539 const char *id;
2b33c4cf
RK
1540
1541 /* Standard fields */
1542 kvp_set(&actiondata, "who", c->who);
1543 kvp_set(&actiondata, "when", vec[0]);
1544 kvp_set(&actiondata, "priority", vec[1]);
1545 kvp_set(&actiondata, "action", vec[2]);
1546 /* Action-dependent fields */
1547 if(!strcmp(vec[2], "play")) {
1548 if(nvec != 4) {
1549 sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n");
1550 return 1;
1551 }
1552 if(!trackdb_exists(vec[3])) {
1553 sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n");
1554 return 1;
1555 }
1556 kvp_set(&actiondata, "track", vec[3]);
1557 } else if(!strcmp(vec[2], "set-global")) {
1558 if(nvec < 4 || nvec > 5) {
1559 sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n");
1560 return 1;
1561 }
1562 kvp_set(&actiondata, "key", vec[3]);
1563 if(nvec > 4)
1564 kvp_set(&actiondata, "value", vec[4]);
1565 } else {
1566 sink_writes(ev_writer_sink(c->w), "550 Unknown action\n");
1567 return 1;
1568 }
1569 /* schedule_add() checks user rights */
1570 id = schedule_add(c->ev, actiondata);
1571 if(!id)
1572 sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n");
1573 else
1574 sink_printf(ev_writer_sink(c->w), "252 %s\n", id);
1575 return 1;
1576}
1577
460b9539 1578static const struct command {
eb5dc014 1579 /** @brief Command name */
460b9539 1580 const char *name;
eb5dc014
RK
1581
1582 /** @brief Minimum number of arguments */
1583 int minargs;
1584
1585 /** @brief Maximum number of arguments */
1586 int maxargs;
1587
1588 /** @brief Function to process command */
460b9539 1589 int (*fn)(struct conn *, char **, int);
eb5dc014
RK
1590
1591 /** @brief Rights required to execute command
1592 *
1593 * 0 means that the command can be issued without logging in. If multiple
1594 * bits are listed here any of those rights will do.
1595 */
1596 rights_type rights;
460b9539 1597} commands[] = {
0f55e905 1598 { "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL },
eb5dc014 1599 { "allfiles", 0, 2, c_allfiles, RIGHT_READ },
ba39faf6 1600 { "confirm", 1, 1, c_confirm, 0 },
b12be54a 1601 { "cookie", 1, 1, c_cookie, 0 },
eb5dc014
RK
1602 { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL },
1603 { "dirs", 0, 2, c_dirs, RIGHT_READ },
1604 { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS },
1605 { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO },
1606 { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS },
1607 { "enabled", 0, 0, c_enabled, RIGHT_READ },
1608 { "exists", 1, 1, c_exists, RIGHT_READ },
1609 { "files", 0, 2, c_files, RIGHT_READ },
1610 { "get", 2, 2, c_get, RIGHT_READ },
1611 { "get-global", 1, 1, c_get_global, RIGHT_READ },
1612 { "length", 1, 1, c_length, RIGHT_READ },
1613 { "log", 0, 0, c_log, RIGHT_READ },
1614 { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ },
1615 { "move", 2, 2, c_move, RIGHT_MOVE__MASK },
1616 { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK },
1617 { "new", 0, 1, c_new, RIGHT_READ },
1618 { "nop", 0, 0, c_nop, 0 },
1619 { "part", 3, 3, c_part, RIGHT_READ },
1620 { "pause", 0, 0, c_pause, RIGHT_PAUSE },
1621 { "play", 1, 1, c_play, RIGHT_PLAY },
1622 { "playing", 0, 0, c_playing, RIGHT_READ },
1623 { "prefs", 1, 1, c_prefs, RIGHT_READ },
1624 { "queue", 0, 0, c_queue, RIGHT_READ },
1625 { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS },
1626 { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS },
1627 { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ },
1628 { "recent", 0, 0, c_recent, RIGHT_READ },
1629 { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN },
ba39faf6 1630 { "register", 3, 3, c_register, RIGHT_REGISTER|RIGHT__LOCAL },
6207d2f3 1631 { "reminder", 1, 1, c_reminder, RIGHT__LOCAL },
eb5dc014 1632 { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK },
dd9af5cb 1633 { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN },
eb5dc014
RK
1634 { "resolve", 1, 1, c_resolve, RIGHT_READ },
1635 { "resume", 0, 0, c_resume, RIGHT_PAUSE },
1636 { "revoke", 0, 0, c_revoke, RIGHT_READ },
1637 { "rtp-address", 0, 0, c_rtp_address, 0 },
2b33c4cf
RK
1638 { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ },
1639 { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ },
1640 { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ },
1641 { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ },
eb5dc014
RK
1642 { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK },
1643 { "search", 1, 1, c_search, RIGHT_READ },
1644 { "set", 3, 3, c_set, RIGHT_PREFS, },
1645 { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS },
1646 { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN },
1647 { "stats", 0, 0, c_stats, RIGHT_READ },
1648 { "tags", 0, 0, c_tags, RIGHT_READ },
1649 { "unset", 2, 2, c_set, RIGHT_PREFS },
1650 { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS },
460b9539 1651 { "user", 2, 2, c_user, 0 },
eb5dc014
RK
1652 { "userinfo", 2, 2, c_userinfo, RIGHT_READ },
1653 { "users", 0, 0, c_users, RIGHT_READ },
1654 { "version", 0, 0, c_version, RIGHT_READ },
1655 { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME }
460b9539 1656};
1657
1658static void command_error(const char *msg, void *u) {
1659 struct conn *c = u;
1660
1661 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1662}
1663
1664/* process a command. Return 1 if complete, 0 if incomplete. */
1665static int command(struct conn *c, char *line) {
1666 char **vec;
1667 int nvec, n;
1668
1669 D(("server command %s", line));
f9635e06
RK
1670 /* We force everything into NFC as early as possible */
1671 if(!(line = utf8_compose_canon(line, strlen(line), 0))) {
1672 sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n");
1673 return 1;
1674 }
460b9539 1675 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1676 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1677 return 1;
1678 }
1679 if(nvec == 0) {
1680 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1681 return 1;
1682 }
ba937f01 1683 if((n = TABLE_FIND(commands, name, vec[0])) < 0)
460b9539 1684 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1685 else {
eb5dc014
RK
1686 if(commands[n].rights
1687 && !(c->rights & commands[n].rights)) {
834e7c4a 1688 error(0, "%s attempted %s but lacks required rights", c->who ? c->who : "NULL",
1689 commands[n].name);
b4a80f69 1690 sink_writes(ev_writer_sink(c->w), "510 Prohibited\n");
460b9539 1691 return 1;
1692 }
1693 ++vec;
1694 --nvec;
1695 if(nvec < commands[n].minargs) {
1696 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1697 return 1;
1698 }
1699 if(nvec > commands[n].maxargs) {
1700 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1701 return 1;
1702 }
1703 return commands[n].fn(c, vec, nvec);
1704 }
1705 return 1; /* completed */
1706}
1707
1708/* redirect to the right reader callback for our current state */
1709static int redirect_reader_callback(ev_source *ev,
1710 ev_reader *reader,
460b9539 1711 void *ptr,
1712 size_t bytes,
1713 int eof,
1714 void *u) {
1715 struct conn *c = u;
1716
75d64210 1717 return c->reader(ev, reader, ptr, bytes, eof, u);
460b9539 1718}
1719
1720/* the main command reader */
1721static int reader_callback(ev_source attribute((unused)) *ev,
1722 ev_reader *reader,
460b9539 1723 void *ptr,
1724 size_t bytes,
1725 int eof,
1726 void *u) {
1727 struct conn *c = u;
1728 char *eol;
1729 int complete;
1730
1731 D(("server reader_callback"));
1732 while((eol = memchr(ptr, '\n', bytes))) {
1733 *eol++ = 0;
1734 ev_reader_consume(reader, eol - (char *)ptr);
1735 complete = command(c, ptr);
1736 bytes -= (eol - (char *)ptr);
1737 ptr = eol;
1738 if(!complete) {
1739 /* the command had better have set a new reader callback */
1740 if(bytes || eof)
1741 /* there are further bytes to read, or we are at eof; arrange for the
1742 * command's reader callback to handle them */
1743 return ev_reader_incomplete(reader);
1744 /* nothing's going on right now */
1745 return 0;
1746 }
1747 /* command completed, we can go around and handle the next one */
1748 }
1749 if(eof) {
1750 if(bytes)
1751 error(0, "S%x unterminated line", c->tag);
8d8b8c1f 1752 D(("normal reader close"));
397ef7bb
RK
1753 c->r = 0;
1754 if(c->w) {
8d8b8c1f 1755 D(("close associated writer"));
397ef7bb
RK
1756 ev_writer_close(c->w);
1757 c->w = 0;
1758 }
0126692c 1759 remove_connection(c);
460b9539 1760 }
1761 return 0;
1762}
1763
1764static int listen_callback(ev_source *ev,
1765 int fd,
1766 const struct sockaddr attribute((unused)) *remote,
1767 socklen_t attribute((unused)) rlen,
1768 void *u) {
1769 const struct listener *l = u;
1770 struct conn *c = xmalloc(sizeof *c);
1771 static unsigned tags;
1772
1773 D(("server listen_callback fd %d (%s)", fd, l->name));
1774 nonblock(fd);
1775 cloexec(fd);
ad492e00 1776 c->next = connections;
460b9539 1777 c->tag = tags++;
1778 c->ev = ev;
e8c92ba7
RK
1779 c->w = ev_writer_new(ev, fd, writer_error, c,
1780 "client writer");
1781 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
1782 "client reader");
75d64210 1783 ev_tie(c->r, c->w);
460b9539 1784 c->fd = fd;
1785 c->reader = reader_callback;
1786 c->l = l;
eb5dc014 1787 c->rights = 0;
ad492e00 1788 connections = c;
460b9539 1789 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
7b32e917
RK
1790 sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n",
1791 2,
b3141726
RK
1792 config->authorization_algorithm,
1793 hex(c->nonce, sizeof c->nonce));
460b9539 1794 return 0;
1795}
1796
1797int server_start(ev_source *ev, int pf,
1798 size_t socklen, const struct sockaddr *sa,
1799 const char *name) {
1800 int fd;
1801 struct listener *l = xmalloc(sizeof *l);
1802 static const int one = 1;
1803
1804 D(("server_init socket %s", name));
1805 fd = xsocket(pf, SOCK_STREAM, 0);
1806 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1807 if(bind(fd, sa, socklen) < 0) {
1808 error(errno, "error binding to %s", name);
1809 return -1;
1810 }
1811 xlisten(fd, 128);
1812 nonblock(fd);
1813 cloexec(fd);
1814 l->name = name;
1815 l->pf = pf;
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RK
1816 if(ev_listen(ev, fd, listen_callback, l, "server listener"))
1817 exit(EXIT_FAILURE);
460b9539 1818 return fd;
1819}
1820
1821int server_stop(ev_source *ev, int fd) {
1822 xclose(fd);
1823 return ev_listen_cancel(ev, fd);
1824}
1825
1826/*
1827Local Variables:
1828c-basic-offset:2
1829comment-column:40
1830fill-column:79
1831End:
1832*/