Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
768d7355 | 3 | * Copyright (C) 2004, 2005, 2006, 2007 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 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <pwd.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/socket.h> | |
27 | #include <sys/time.h> | |
28 | #include <unistd.h> | |
29 | #include <stdlib.h> | |
30 | #include <string.h> | |
31 | #include <errno.h> | |
32 | #include <fcntl.h> | |
33 | #include <gcrypt.h> | |
34 | #include <stddef.h> | |
35 | #include <time.h> | |
36 | #include <limits.h> | |
37 | #include <pcre.h> | |
38 | #include <netdb.h> | |
39 | #include <netinet/in.h> | |
40 | ||
41 | #include "event.h" | |
42 | #include "server.h" | |
43 | #include "syscalls.h" | |
44 | #include "queue.h" | |
f08c0859 | 45 | #include "server-queue.h" |
460b9539 | 46 | #include "play.h" |
47 | #include "log.h" | |
48 | #include "mem.h" | |
49 | #include "state.h" | |
50 | #include "charset.h" | |
51 | #include "split.h" | |
52 | #include "configuration.h" | |
53 | #include "hex.h" | |
5df73aeb | 54 | #include "rights.h" |
460b9539 | 55 | #include "trackdb.h" |
56 | #include "table.h" | |
57 | #include "kvp.h" | |
58 | #include "mixer.h" | |
59 | #include "sink.h" | |
60 | #include "authhash.h" | |
61 | #include "plugin.h" | |
62 | #include "printf.h" | |
63 | #include "trackname.h" | |
64 | #include "eventlog.h" | |
65 | #include "defs.h" | |
66 | #include "cache.h" | |
f9635e06 | 67 | #include "unicode.h" |
b12be54a | 68 | #include "cookies.h" |
460b9539 | 69 | |
70 | #ifndef NONCE_SIZE | |
71 | # define NONCE_SIZE 16 | |
72 | #endif | |
73 | ||
74 | int volume_left, volume_right; /* last known volume */ | |
75 | ||
18e6d6e6 | 76 | /** @brief Accept all well-formed login attempts |
77 | * | |
78 | * Used in debugging. | |
79 | */ | |
80 | int wideopen; | |
81 | ||
460b9539 | 82 | struct listener { |
83 | const char *name; | |
84 | int pf; | |
85 | }; | |
86 | ||
397ef7bb | 87 | /** @brief One client connection */ |
460b9539 | 88 | struct conn { |
397ef7bb | 89 | /** @brief Read commands from here */ |
460b9539 | 90 | ev_reader *r; |
397ef7bb | 91 | /** @brief Send responses to here */ |
460b9539 | 92 | ev_writer *w; |
397ef7bb | 93 | /** @brief Underlying file descriptor */ |
460b9539 | 94 | int fd; |
397ef7bb | 95 | /** @brief Unique identifier for connection used in log messages */ |
460b9539 | 96 | unsigned tag; |
397ef7bb | 97 | /** @brief Login name or NULL */ |
460b9539 | 98 | char *who; |
397ef7bb | 99 | /** @brief Event loop */ |
460b9539 | 100 | ev_source *ev; |
397ef7bb | 101 | /** @brief Nonce chosen for this connection */ |
460b9539 | 102 | unsigned char nonce[NONCE_SIZE]; |
397ef7bb RK |
103 | /** @brief Current reader callback |
104 | * | |
105 | * We change this depending on whether we're servicing the @b log command | |
106 | */ | |
460b9539 | 107 | ev_reader_callback *reader; |
397ef7bb | 108 | /** @brief Event log output sending to this connection */ |
460b9539 | 109 | struct eventlog_output *lo; |
397ef7bb | 110 | /** @brief Parent listener */ |
460b9539 | 111 | const struct listener *l; |
b12be54a RK |
112 | /** @brief Login cookie or NULL */ |
113 | char *cookie; | |
eb5dc014 RK |
114 | /** @brief Connection rights */ |
115 | rights_type rights; | |
460b9539 | 116 | }; |
117 | ||
118 | static int reader_callback(ev_source *ev, | |
119 | ev_reader *reader, | |
460b9539 | 120 | void *ptr, |
121 | size_t bytes, | |
122 | int eof, | |
123 | void *u); | |
124 | ||
125 | static const char *noyes[] = { "no", "yes" }; | |
126 | ||
397ef7bb RK |
127 | /** @brief Called when a connection's writer fails or is shut down |
128 | * | |
129 | * If the connection still has a raeder that is cancelled. | |
130 | */ | |
460b9539 | 131 | static int writer_error(ev_source attribute((unused)) *ev, |
460b9539 | 132 | int errno_value, |
133 | void *u) { | |
134 | struct conn *c = u; | |
135 | ||
8d8b8c1f | 136 | D(("server writer_error S%x %d", c->tag, errno_value)); |
460b9539 | 137 | if(errno_value == 0) { |
138 | /* writer is done */ | |
8d8b8c1f | 139 | D(("S%x writer completed", c->tag)); |
460b9539 | 140 | } else { |
141 | if(errno_value != EPIPE) | |
142 | error(errno_value, "S%x write error on socket", c->tag); | |
38b8221f | 143 | if(c->r) { |
8d8b8c1f | 144 | D(("cancel reader")); |
38b8221f RK |
145 | ev_reader_cancel(c->r); |
146 | c->r = 0; | |
147 | } | |
8d8b8c1f | 148 | D(("done cancel reader")); |
460b9539 | 149 | } |
38b8221f | 150 | c->w = 0; |
75d64210 | 151 | ev_report(ev); |
460b9539 | 152 | return 0; |
153 | } | |
154 | ||
397ef7bb RK |
155 | /** @brief Called when a conncetion's reader fails or is shut down |
156 | * | |
157 | * If connection still has a writer then it is closed. | |
158 | */ | |
460b9539 | 159 | static int reader_error(ev_source attribute((unused)) *ev, |
460b9539 | 160 | int errno_value, |
161 | void *u) { | |
162 | struct conn *c = u; | |
163 | ||
8d8b8c1f | 164 | D(("server reader_error S%x %d", c->tag, errno_value)); |
1563f6f6 | 165 | error(errno_value, "S%x read error on socket", c->tag); |
38b8221f RK |
166 | if(c->w) |
167 | ev_writer_close(c->w); | |
168 | c->w = 0; | |
169 | c->r = 0; | |
768d7355 | 170 | ev_report(ev); |
460b9539 | 171 | return 0; |
172 | } | |
173 | ||
460b9539 | 174 | static int c_disable(struct conn *c, char **vec, int nvec) { |
175 | if(nvec == 0) | |
176 | disable_playing(c->who); | |
177 | else if(nvec == 1 && !strcmp(vec[0], "now")) | |
178 | disable_playing(c->who); | |
179 | else { | |
180 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
181 | return 1; /* completed */ | |
182 | } | |
183 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
184 | return 1; /* completed */ | |
185 | } | |
186 | ||
187 | static int c_enable(struct conn *c, | |
188 | char attribute((unused)) **vec, | |
189 | int attribute((unused)) nvec) { | |
190 | enable_playing(c->who, c->ev); | |
191 | /* Enable implicitly unpauses if there is nothing playing */ | |
192 | if(paused && !playing) resume_playing(c->who); | |
193 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
194 | return 1; /* completed */ | |
195 | } | |
196 | ||
197 | static int c_enabled(struct conn *c, | |
198 | char attribute((unused)) **vec, | |
199 | int attribute((unused)) nvec) { | |
200 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
201 | return 1; /* completed */ | |
202 | } | |
203 | ||
204 | static int c_play(struct conn *c, char **vec, | |
205 | int attribute((unused)) nvec) { | |
206 | const char *track; | |
207 | struct queue_entry *q; | |
208 | ||
209 | if(!trackdb_exists(vec[0])) { | |
210 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
211 | return 1; | |
212 | } | |
213 | if(!(track = trackdb_resolve(vec[0]))) { | |
214 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
215 | return 1; | |
216 | } | |
217 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM); | |
218 | queue_write(); | |
219 | /* If we added the first track, and something is playing, then prepare the | |
220 | * new track. If nothing is playing then we don't bother as it wouldn't gain | |
221 | * anything. */ | |
222 | if(q == qhead.next && playing) | |
223 | prepare(c->ev, q); | |
81e440ce | 224 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
460b9539 | 225 | /* If the queue was empty but we are for some reason paused then |
226 | * unpause. */ | |
227 | if(!playing) resume_playing(0); | |
228 | play(c->ev); | |
229 | return 1; /* completed */ | |
230 | } | |
231 | ||
232 | static int c_remove(struct conn *c, char **vec, | |
233 | int attribute((unused)) nvec) { | |
234 | struct queue_entry *q; | |
eb5dc014 | 235 | rights_type r; |
460b9539 | 236 | |
237 | if(!(q = queue_find(vec[0]))) { | |
238 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
239 | return 1; | |
240 | } | |
eb5dc014 RK |
241 | if(q->submitter) |
242 | if(!strcmp(q->submitter, c->who)) | |
243 | r = RIGHT_REMOVE_MINE; | |
244 | else | |
245 | r = RIGHT_REMOVE_ANY; | |
246 | else | |
247 | r = RIGHT_REMOVE_RANDOM; | |
248 | if(!(c->rights & r)) { | |
249 | sink_writes(ev_writer_sink(c->w), | |
250 | "550 Not authorized to remove that track\n"); | |
251 | return 1; | |
460b9539 | 252 | } |
253 | queue_remove(q, c->who); | |
254 | /* De-prepare the track. */ | |
255 | abandon(c->ev, q); | |
eb5dc014 | 256 | /* If we removed a random track then add another one. */ |
460b9539 | 257 | if(q->state == playing_random) |
258 | add_random_track(); | |
259 | /* Prepare whatever the next head track is. */ | |
260 | if(qhead.next != &qhead) | |
261 | prepare(c->ev, qhead.next); | |
262 | queue_write(); | |
263 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
264 | return 1; /* completed */ | |
265 | } | |
266 | ||
267 | static int c_scratch(struct conn *c, | |
268 | char **vec, | |
269 | int nvec) { | |
eb5dc014 RK |
270 | rights_type r; |
271 | ||
460b9539 | 272 | if(!playing) { |
273 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
274 | return 1; /* completed */ | |
275 | } | |
eb5dc014 RK |
276 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
277 | * playing track then you will get 550 if you weren't authorized to scratch | |
278 | * the currently playing track. */ | |
279 | if(playing->submitter) | |
280 | if(!strcmp(playing->submitter, c->who)) | |
281 | r = RIGHT_SCRATCH_MINE; | |
282 | else | |
283 | r = RIGHT_SCRATCH_ANY; | |
284 | else | |
285 | r = RIGHT_SCRATCH_RANDOM; | |
286 | if(!(c->rights & r)) { | |
287 | sink_writes(ev_writer_sink(c->w), | |
288 | "550 Not authorized to scratch that track\n"); | |
289 | return 1; | |
460b9539 | 290 | } |
291 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
292 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
293 | resume_playing(0); | |
294 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
295 | return 1; /* completed */ | |
296 | } | |
297 | ||
298 | static int c_pause(struct conn *c, | |
299 | char attribute((unused)) **vec, | |
300 | int attribute((unused)) nvec) { | |
301 | if(!playing) { | |
302 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
303 | return 1; /* completed */ | |
304 | } | |
305 | if(paused) { | |
306 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
307 | return 1; /* completed */ | |
308 | } | |
309 | if(pause_playing(c->who) < 0) | |
310 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
311 | else | |
312 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
313 | return 1; | |
314 | } | |
315 | ||
316 | static int c_resume(struct conn *c, | |
317 | char attribute((unused)) **vec, | |
318 | int attribute((unused)) nvec) { | |
319 | if(!paused) { | |
320 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
321 | return 1; /* completed */ | |
322 | } | |
323 | resume_playing(c->who); | |
324 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
325 | return 1; | |
326 | } | |
327 | ||
328 | static int c_shutdown(struct conn *c, | |
329 | char attribute((unused)) **vec, | |
330 | int attribute((unused)) nvec) { | |
331 | info("S%x shut down by %s", c->tag, c->who); | |
332 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); | |
333 | ev_writer_flush(c->w); | |
334 | quit(c->ev); | |
335 | } | |
336 | ||
337 | static int c_reconfigure(struct conn *c, | |
338 | char attribute((unused)) **vec, | |
339 | int attribute((unused)) nvec) { | |
340 | info("S%x reconfigure by %s", c->tag, c->who); | |
341 | if(reconfigure(c->ev, 1)) | |
342 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
343 | else | |
344 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
345 | return 1; /* completed */ | |
346 | } | |
347 | ||
348 | static int c_rescan(struct conn *c, | |
349 | char attribute((unused)) **vec, | |
350 | int attribute((unused)) nvec) { | |
351 | info("S%x rescan by %s", c->tag, c->who); | |
352 | trackdb_rescan(c->ev); | |
353 | sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n"); | |
354 | return 1; /* completed */ | |
355 | } | |
356 | ||
357 | static int c_version(struct conn *c, | |
358 | char attribute((unused)) **vec, | |
359 | int attribute((unused)) nvec) { | |
360 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 361 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 362 | return 1; /* completed */ |
363 | } | |
364 | ||
365 | static int c_playing(struct conn *c, | |
366 | char attribute((unused)) **vec, | |
367 | int attribute((unused)) nvec) { | |
368 | if(playing) { | |
369 | queue_fix_sofar(playing); | |
370 | playing->expected = 0; | |
371 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
372 | } else | |
373 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
374 | return 1; /* completed */ | |
375 | } | |
376 | ||
b12be54a | 377 | static const char *connection_host(struct conn *c) { |
460b9539 | 378 | union { |
379 | struct sockaddr sa; | |
380 | struct sockaddr_in in; | |
381 | struct sockaddr_in6 in6; | |
382 | } u; | |
383 | socklen_t l; | |
b12be54a | 384 | int n; |
460b9539 | 385 | char host[1024]; |
386 | ||
460b9539 | 387 | /* get connection data */ |
388 | l = sizeof u; | |
389 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
390 | error(errno, "S%x error calling getpeername", c->tag); | |
b12be54a | 391 | return 0; |
460b9539 | 392 | } |
393 | if(c->l->pf != PF_UNIX) { | |
394 | if((n = getnameinfo(&u.sa, l, | |
395 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
396 | error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n)); | |
b12be54a | 397 | return 0; |
460b9539 | 398 | } |
b12be54a | 399 | return xstrdup(host); |
18e6d6e6 | 400 | } else |
b12be54a RK |
401 | return "local"; |
402 | } | |
403 | ||
404 | static int c_user(struct conn *c, | |
405 | char **vec, | |
406 | int attribute((unused)) nvec) { | |
eb5dc014 | 407 | struct kvp *k; |
f0feb22e | 408 | const char *res, *host, *password; |
eb5dc014 | 409 | rights_type rights; |
b12be54a RK |
410 | |
411 | if(c->who) { | |
412 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
413 | return 1; | |
414 | } | |
415 | /* get connection data */ | |
416 | if(!(host = connection_host(c))) { | |
417 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
418 | return 1; | |
419 | } | |
460b9539 | 420 | /* find the user */ |
eb5dc014 | 421 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 422 | /* reject nonexistent users */ |
eb5dc014 RK |
423 | if(!k) { |
424 | error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); | |
425 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
426 | return 1; | |
427 | } | |
428 | /* reject unconfirmed users */ | |
429 | if(kvp_get(k, "confirmation")) { | |
430 | error(0, "S%x unconfirmed user '%s' from %s", c->tag, vec[0], host); | |
431 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
432 | return 1; | |
433 | } | |
434 | password = kvp_get(k, "password"); | |
435 | if(!password) password = ""; | |
436 | if(parse_rights(kvp_get(k, "rights"), &rights)) { | |
437 | error(0, "error parsing rights for %s", vec[0]); | |
18e6d6e6 | 438 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
439 | return 1; | |
440 | } | |
f0feb22e RK |
441 | /* check whether the response is right */ |
442 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 443 | config->authorization_algorithm); |
18e6d6e6 | 444 | if(wideopen || (res && !strcmp(res, vec[1]))) { |
445 | c->who = vec[0]; | |
eb5dc014 | 446 | c->rights = rights; |
18e6d6e6 | 447 | /* currently we only bother logging remote connections */ |
eb5dc014 | 448 | if(strcmp(host, "local")) { |
18e6d6e6 | 449 | info("S%x %s connected from %s", c->tag, vec[0], host); |
eb5dc014 RK |
450 | c->rights |= RIGHT__LOCAL; |
451 | } | |
18e6d6e6 | 452 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
453 | return 1; | |
460b9539 | 454 | } |
455 | /* oops, response was wrong */ | |
18e6d6e6 | 456 | info("S%x authentication failure for %s from %s", c->tag, vec[0], host); |
460b9539 | 457 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
458 | return 1; | |
459 | } | |
460 | ||
461 | static int c_recent(struct conn *c, | |
462 | char attribute((unused)) **vec, | |
463 | int attribute((unused)) nvec) { | |
464 | const struct queue_entry *q; | |
465 | ||
466 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
467 | for(q = phead.next; q != &phead; q = q->next) | |
468 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
469 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
470 | return 1; /* completed */ | |
471 | } | |
472 | ||
473 | static int c_queue(struct conn *c, | |
474 | char attribute((unused)) **vec, | |
475 | int attribute((unused)) nvec) { | |
476 | struct queue_entry *q; | |
477 | time_t when = 0; | |
478 | const char *l; | |
479 | long length; | |
480 | ||
481 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
482 | if(playing_is_enabled() && !paused) { | |
483 | if(playing) { | |
484 | queue_fix_sofar(playing); | |
485 | if((l = trackdb_get(playing->track, "_length")) | |
486 | && (length = atol(l))) { | |
487 | time(&when); | |
488 | when += length - playing->sofar + config->gap; | |
489 | } | |
490 | } else | |
491 | /* Nothing is playing but playing is enabled, so whatever is | |
492 | * first in the queue can be expected to start immediately. */ | |
493 | time(&when); | |
494 | } | |
495 | for(q = qhead.next; q != &qhead; q = q->next) { | |
496 | /* fill in estimated start time */ | |
497 | q->expected = when; | |
498 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
499 | /* update for next track */ | |
500 | if(when) { | |
501 | if((l = trackdb_get(q->track, "_length")) | |
502 | && (length = atol(l))) | |
503 | when += length + config->gap; | |
504 | else | |
505 | when = 0; | |
506 | } | |
507 | } | |
508 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
509 | return 1; /* completed */ | |
510 | } | |
511 | ||
512 | static int output_list(struct conn *c, char **vec) { | |
513 | while(*vec) | |
514 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
515 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
516 | return 1; | |
517 | } | |
518 | ||
519 | static int files_dirs(struct conn *c, | |
520 | char **vec, | |
521 | int nvec, | |
522 | enum trackdb_listable what) { | |
523 | const char *dir, *re, *errstr; | |
524 | int erroffset; | |
525 | pcre *rec; | |
526 | char **fvec, *key; | |
527 | ||
528 | switch(nvec) { | |
529 | case 0: dir = 0; re = 0; break; | |
530 | case 1: dir = vec[0]; re = 0; break; | |
531 | case 2: dir = vec[0]; re = vec[1]; break; | |
532 | default: abort(); | |
533 | } | |
534 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
535 | if(dir && strchr(dir, '\n')) { | |
536 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
537 | return 1; | |
538 | } | |
539 | if(re && strchr(re, '\n')) { | |
540 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
541 | return 1; | |
542 | } | |
543 | /* We bother eliminating "" because the web interface is relatively | |
544 | * likely to send it */ | |
545 | if(re && *re) { | |
546 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
547 | fvec = (char **)cache_get(&cache_files_type, key); | |
548 | if(fvec) { | |
549 | /* Got a cache hit, don't store the answer in the cache */ | |
550 | key = 0; | |
551 | ++cache_files_hits; | |
552 | rec = 0; /* quieten compiler */ | |
553 | } else { | |
554 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
555 | * in the cache. */ | |
556 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
557 | &errstr, &erroffset, 0))) { | |
558 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
559 | errstr); | |
560 | return 1; | |
561 | } | |
562 | /* It only counts as a miss if the regexp was valid. */ | |
563 | ++cache_files_misses; | |
564 | } | |
565 | } else { | |
566 | /* No regexp, don't bother caching the result */ | |
567 | rec = 0; | |
568 | key = 0; | |
569 | fvec = 0; | |
570 | } | |
571 | if(!fvec) { | |
572 | /* No cache hit (either because a miss, or because we did not look) so do | |
573 | * the lookup */ | |
574 | if(dir && *dir) | |
575 | fvec = trackdb_list(dir, 0, what, rec); | |
576 | else | |
577 | fvec = trackdb_list(0, 0, what, rec); | |
578 | } | |
579 | if(key) | |
580 | /* Put the answer in the cache */ | |
581 | cache_put(&cache_files_type, key, fvec); | |
582 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
583 | return output_list(c, fvec); | |
584 | } | |
585 | ||
586 | static int c_files(struct conn *c, | |
587 | char **vec, | |
588 | int nvec) { | |
589 | return files_dirs(c, vec, nvec, trackdb_files); | |
590 | } | |
591 | ||
592 | static int c_dirs(struct conn *c, | |
593 | char **vec, | |
594 | int nvec) { | |
595 | return files_dirs(c, vec, nvec, trackdb_directories); | |
596 | } | |
597 | ||
598 | static int c_allfiles(struct conn *c, | |
599 | char **vec, | |
600 | int nvec) { | |
601 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
602 | } | |
603 | ||
604 | static int c_get(struct conn *c, | |
605 | char **vec, | |
606 | int attribute((unused)) nvec) { | |
607 | const char *v; | |
608 | ||
609 | if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1]))) | |
7b32e917 | 610 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 611 | else |
fb1bc1f5 | 612 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 613 | return 1; |
614 | } | |
615 | ||
616 | static int c_length(struct conn *c, | |
617 | char **vec, | |
618 | int attribute((unused)) nvec) { | |
619 | const char *track, *v; | |
620 | ||
621 | if(!(track = trackdb_resolve(vec[0]))) { | |
622 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
623 | return 1; | |
624 | } | |
625 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 626 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 627 | else |
628 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
629 | return 1; | |
630 | } | |
631 | ||
632 | static int c_set(struct conn *c, | |
633 | char **vec, | |
634 | int attribute((unused)) nvec) { | |
635 | if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2])) | |
636 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
637 | else | |
638 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
639 | return 1; | |
640 | } | |
641 | ||
642 | static int c_prefs(struct conn *c, | |
643 | char **vec, | |
644 | int attribute((unused)) nvec) { | |
645 | struct kvp *k; | |
646 | ||
647 | k = trackdb_get_all(vec[0]); | |
648 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); | |
649 | for(; k; k = k->next) | |
650 | if(k->name[0] != '_') /* omit internal values */ | |
651 | sink_printf(ev_writer_sink(c->w), | |
652 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
653 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
654 | return 1; | |
655 | } | |
656 | ||
657 | static int c_exists(struct conn *c, | |
658 | char **vec, | |
659 | int attribute((unused)) nvec) { | |
660 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); | |
661 | return 1; | |
662 | } | |
663 | ||
664 | static void search_parse_error(const char *msg, void *u) { | |
665 | *(const char **)u = msg; | |
666 | } | |
667 | ||
668 | static int c_search(struct conn *c, | |
669 | char **vec, | |
670 | int attribute((unused)) nvec) { | |
671 | char **terms, **results; | |
672 | int nterms, nresults, n; | |
673 | const char *e = "unknown error"; | |
674 | ||
675 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
676 | * interface a bit more convenient to add searching to, but it has the more | |
677 | * compelling advantage that if everything uses it, then interpretation of | |
678 | * user-supplied search strings will be the same everywhere. */ | |
679 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
680 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
681 | } else { | |
682 | results = trackdb_search(terms, nterms, &nresults); | |
683 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
684 | for(n = 0; n < nresults; ++n) | |
685 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
686 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
687 | } | |
688 | return 1; | |
689 | } | |
690 | ||
691 | static int c_random_enable(struct conn *c, | |
692 | char attribute((unused)) **vec, | |
693 | int attribute((unused)) nvec) { | |
694 | enable_random(c->who, c->ev); | |
695 | /* Enable implicitly unpauses if there is nothing playing */ | |
696 | if(paused && !playing) resume_playing(c->who); | |
697 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
698 | return 1; /* completed */ | |
699 | } | |
700 | ||
701 | static int c_random_disable(struct conn *c, | |
702 | char attribute((unused)) **vec, | |
703 | int attribute((unused)) nvec) { | |
704 | disable_random(c->who); | |
705 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
706 | return 1; /* completed */ | |
707 | } | |
708 | ||
709 | static int c_random_enabled(struct conn *c, | |
710 | char attribute((unused)) **vec, | |
711 | int attribute((unused)) nvec) { | |
712 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
713 | return 1; /* completed */ | |
714 | } | |
715 | ||
d6dde5a3 RK |
716 | static void got_stats(char *stats, void *u) { |
717 | struct conn *const c = u; | |
718 | ||
719 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
720 | /* Now we can start processing commands again */ | |
721 | ev_reader_enable(c->r); | |
722 | } | |
723 | ||
460b9539 | 724 | static int c_stats(struct conn *c, |
725 | char attribute((unused)) **vec, | |
726 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
727 | trackdb_stats_subprocess(c->ev, got_stats, c); |
728 | return 0; /* not yet complete */ | |
460b9539 | 729 | } |
730 | ||
731 | static int c_volume(struct conn *c, | |
732 | char **vec, | |
733 | int nvec) { | |
734 | int l, r, set; | |
735 | char lb[32], rb[32]; | |
eb5dc014 | 736 | rights_type rights; |
460b9539 | 737 | |
738 | switch(nvec) { | |
739 | case 0: | |
740 | set = 0; | |
741 | break; | |
742 | case 1: | |
743 | l = r = atoi(vec[0]); | |
744 | set = 1; | |
745 | break; | |
746 | case 2: | |
747 | l = atoi(vec[0]); | |
748 | r = atoi(vec[1]); | |
749 | set = 1; | |
750 | break; | |
751 | default: | |
752 | abort(); | |
753 | } | |
eb5dc014 RK |
754 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
755 | if(!(c->rights & rights)) { | |
756 | sink_writes(ev_writer_sink(c->w), "530 Prohibited\n"); | |
757 | return 1; | |
758 | } | |
460b9539 | 759 | if(mixer_control(&l, &r, set)) |
760 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); | |
761 | else { | |
762 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); | |
763 | if(l != volume_left || r != volume_right) { | |
764 | volume_left = l; | |
765 | volume_right = r; | |
766 | snprintf(lb, sizeof lb, "%d", l); | |
767 | snprintf(rb, sizeof rb, "%d", r); | |
768 | eventlog("volume", lb, rb, (char *)0); | |
769 | } | |
770 | } | |
771 | return 1; | |
772 | } | |
773 | ||
397ef7bb RK |
774 | /** @brief Called when data arrives on a log connection |
775 | * | |
776 | * We just discard all such data. The client may occasionally send data as a | |
777 | * keepalive. | |
778 | */ | |
779 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 780 | ev_reader *reader, |
397ef7bb | 781 | void attribute((unused)) *ptr, |
460b9539 | 782 | size_t bytes, |
397ef7bb RK |
783 | int attribute((unused)) eof, |
784 | void attribute((unused)) *u) { | |
460b9539 | 785 | struct conn *c = u; |
786 | ||
397ef7bb RK |
787 | ev_reader_consume(reader, bytes); |
788 | if(eof) { | |
789 | /* Oops, that's all for now */ | |
8d8b8c1f | 790 | D(("logging reader eof")); |
397ef7bb | 791 | if(c->w) { |
8d8b8c1f | 792 | D(("close writer")); |
397ef7bb RK |
793 | ev_writer_close(c->w); |
794 | c->w = 0; | |
795 | } | |
796 | c->r = 0; | |
f6033c46 | 797 | } |
397ef7bb | 798 | return 0; |
460b9539 | 799 | } |
800 | ||
801 | static void logclient(const char *msg, void *user) { | |
802 | struct conn *c = user; | |
803 | ||
f6033c46 RK |
804 | if(!c->w || !c->r) { |
805 | /* This connection has gone up in smoke for some reason */ | |
806 | eventlog_remove(c->lo); | |
807 | return; | |
808 | } | |
460b9539 | 809 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
810 | (uintmax_t)time(0), msg); | |
811 | } | |
812 | ||
813 | static int c_log(struct conn *c, | |
814 | char attribute((unused)) **vec, | |
815 | int attribute((unused)) nvec) { | |
816 | time_t now; | |
817 | ||
818 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
819 | /* pump out initial state */ | |
820 | time(&now); | |
821 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
822 | (uintmax_t)now, | |
823 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
824 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
825 | (uintmax_t)now, | |
826 | random_is_enabled() ? "enable_random" : "disable_random"); | |
827 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
828 | (uintmax_t)now, | |
829 | paused ? "pause" : "resume"); | |
5abe307a RK |
830 | if(playing) |
831 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
832 | (uintmax_t)now); | |
df44d69b RK |
833 | /* Initial volume */ |
834 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
835 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 836 | c->lo = xmalloc(sizeof *c->lo); |
837 | c->lo->fn = logclient; | |
838 | c->lo->user = c; | |
839 | eventlog_add(c->lo); | |
840 | c->reader = logging_reader_callback; | |
841 | return 0; | |
842 | } | |
843 | ||
eb5dc014 RK |
844 | /** @brief Test whether a move is allowed |
845 | * @param c Connection | |
846 | * @param qs List of IDs on queue | |
847 | * @param nqs Number of IDs | |
848 | * @return 0 if move is prohibited, non-0 if it is allowed | |
849 | */ | |
850 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
851 | rights_type r = 0; | |
852 | ||
853 | for(; nqs > 0; ++qs, --nqs) { | |
854 | struct queue_entry *const q = *qs; | |
855 | ||
856 | if(q->submitter) | |
857 | if(!strcmp(q->submitter, c->who)) | |
858 | r |= RIGHT_MOVE_MINE; | |
859 | else | |
860 | r |= RIGHT_MOVE_ANY; | |
861 | else | |
862 | r |= RIGHT_MOVE_RANDOM; | |
863 | } | |
864 | return (c->rights & r) == r; | |
865 | } | |
866 | ||
460b9539 | 867 | static int c_move(struct conn *c, |
868 | char **vec, | |
869 | int attribute((unused)) nvec) { | |
870 | struct queue_entry *q; | |
871 | int n; | |
872 | ||
460b9539 | 873 | if(!(q = queue_find(vec[0]))) { |
874 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
875 | return 1; | |
876 | } | |
eb5dc014 RK |
877 | if(!has_move_rights(c, &q, 1)) { |
878 | sink_writes(ev_writer_sink(c->w), | |
879 | "550 Not authorized to move that track\n"); | |
880 | return 1; | |
881 | } | |
460b9539 | 882 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 883 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
884 | /* If we've moved to the head of the queue then prepare the track. */ | |
885 | if(q == qhead.next) | |
886 | prepare(c->ev, q); | |
887 | return 1; | |
888 | } | |
889 | ||
890 | static int c_moveafter(struct conn *c, | |
891 | char **vec, | |
892 | int attribute((unused)) nvec) { | |
893 | struct queue_entry *q, **qs; | |
894 | int n; | |
895 | ||
460b9539 | 896 | if(vec[0][0]) { |
897 | if(!(q = queue_find(vec[0]))) { | |
898 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
899 | return 1; | |
900 | } | |
901 | } else | |
902 | q = 0; | |
903 | ++vec; | |
904 | --nvec; | |
905 | qs = xcalloc(nvec, sizeof *qs); | |
906 | for(n = 0; n < nvec; ++n) | |
907 | if(!(qs[n] = queue_find(vec[n]))) { | |
908 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
909 | return 1; | |
910 | } | |
eb5dc014 RK |
911 | if(!has_move_rights(c, qs, nvec)) { |
912 | sink_writes(ev_writer_sink(c->w), | |
913 | "550 Not authorized to move those tracks\n"); | |
914 | return 1; | |
915 | } | |
460b9539 | 916 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 917 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
918 | /* If we've moved to the head of the queue then prepare the track. */ | |
919 | if(q == qhead.next) | |
920 | prepare(c->ev, q); | |
921 | return 1; | |
922 | } | |
923 | ||
924 | static int c_part(struct conn *c, | |
925 | char **vec, | |
926 | int attribute((unused)) nvec) { | |
927 | sink_printf(ev_writer_sink(c->w), "252 %s\n", | |
7b32e917 | 928 | quoteutf8(trackdb_getpart(vec[0], vec[1], vec[2]))); |
460b9539 | 929 | return 1; |
930 | } | |
931 | ||
932 | static int c_resolve(struct conn *c, | |
933 | char **vec, | |
934 | int attribute((unused)) nvec) { | |
935 | const char *track; | |
936 | ||
937 | if(!(track = trackdb_resolve(vec[0]))) { | |
938 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
939 | return 1; | |
940 | } | |
7b32e917 | 941 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 942 | return 1; |
943 | } | |
944 | ||
945 | static int c_tags(struct conn *c, | |
946 | char attribute((unused)) **vec, | |
947 | int attribute((unused)) nvec) { | |
948 | char **tags = trackdb_alltags(); | |
949 | ||
950 | sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n"); | |
951 | while(*tags) { | |
952 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
953 | **tags == '.' ? "." : "", *tags); | |
954 | ++tags; | |
955 | } | |
956 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
957 | return 1; /* completed */ | |
460b9539 | 958 | } |
959 | ||
960 | static int c_set_global(struct conn *c, | |
961 | char **vec, | |
962 | int attribute((unused)) nvec) { | |
f9635e06 RK |
963 | if(vec[0][0] == '_') { |
964 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
965 | return 1; | |
966 | } | |
460b9539 | 967 | trackdb_set_global(vec[0], vec[1], c->who); |
968 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
969 | return 1; | |
970 | } | |
971 | ||
972 | static int c_get_global(struct conn *c, | |
973 | char **vec, | |
974 | int attribute((unused)) nvec) { | |
975 | const char *s = trackdb_get_global(vec[0]); | |
976 | ||
977 | if(s) | |
7b32e917 | 978 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 979 | else |
fb1bc1f5 | 980 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 981 | return 1; |
982 | } | |
983 | ||
7858930d | 984 | static int c_nop(struct conn *c, |
985 | char attribute((unused)) **vec, | |
986 | int attribute((unused)) nvec) { | |
987 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
988 | return 1; | |
989 | } | |
990 | ||
2a10b70b RK |
991 | static int c_new(struct conn *c, |
992 | char **vec, | |
993 | int nvec) { | |
994 | char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX); | |
995 | ||
996 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); | |
997 | while(*tracks) { | |
998 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
999 | **tracks == '.' ? "." : "", *tracks); | |
1000 | ++tracks; | |
1001 | } | |
1002 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1003 | return 1; /* completed */ | |
1004 | ||
1005 | } | |
1006 | ||
ca831831 RK |
1007 | static int c_rtp_address(struct conn *c, |
1008 | char attribute((unused)) **vec, | |
1009 | int attribute((unused)) nvec) { | |
1010 | if(config->speaker_backend == BACKEND_NETWORK) { | |
1011 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", | |
1012 | quoteutf8(config->broadcast.s[0]), | |
1013 | quoteutf8(config->broadcast.s[1])); | |
1014 | } else | |
1015 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1016 | return 1; | |
1017 | } | |
b12be54a RK |
1018 | |
1019 | static int c_cookie(struct conn *c, | |
1020 | char **vec, | |
1021 | int attribute((unused)) nvec) { | |
1022 | const char *host; | |
1023 | char *user; | |
eb5dc014 | 1024 | rights_type rights; |
b12be54a RK |
1025 | |
1026 | /* Can't log in twice on the same connection */ | |
1027 | if(c->who) { | |
1028 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1029 | return 1; | |
1030 | } | |
1031 | /* Get some kind of peer identifcation */ | |
1032 | if(!(host = connection_host(c))) { | |
1033 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1034 | return 1; | |
1035 | } | |
1036 | /* Check the cookie */ | |
eb5dc014 | 1037 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1038 | if(!user) { |
1039 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1040 | return 1; | |
1041 | } | |
1042 | /* Log in */ | |
eb5dc014 | 1043 | c->who = vec[0]; |
b12be54a | 1044 | c->cookie = vec[0]; |
eb5dc014 RK |
1045 | c->rights = rights; |
1046 | if(strcmp(host, "local")) { | |
b12be54a | 1047 | info("S%x %s connected with cookie from %s", c->tag, user, host); |
eb5dc014 RK |
1048 | c->rights |= RIGHT__LOCAL; |
1049 | } | |
b12be54a RK |
1050 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
1051 | return 1; | |
1052 | } | |
1053 | ||
1054 | static int c_make_cookie(struct conn *c, | |
1055 | char attribute((unused)) **vec, | |
1056 | int attribute((unused)) nvec) { | |
1057 | const char *cookie = make_cookie(c->who); | |
1058 | ||
1059 | if(cookie) | |
eb5dc014 | 1060 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1061 | else |
1062 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1063 | return 1; | |
1064 | } | |
1065 | ||
1066 | static int c_revoke(struct conn *c, | |
1067 | char attribute((unused)) **vec, | |
1068 | int attribute((unused)) nvec) { | |
1069 | if(c->cookie) { | |
1070 | revoke_cookie(c->cookie); | |
1071 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1072 | } else | |
1073 | sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n"); | |
1074 | return 1; | |
1075 | } | |
1076 | ||
f0feb22e RK |
1077 | static int c_adduser(struct conn *c, |
1078 | char **vec, | |
1079 | int attribute((unused)) nvec) { | |
04e1fa7c | 1080 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, 0)) |
f0feb22e RK |
1081 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1082 | else | |
1083 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1084 | return 1; | |
1085 | } | |
1086 | ||
1087 | static int c_deluser(struct conn *c, | |
1088 | char **vec, | |
1089 | int attribute((unused)) nvec) { | |
f0feb22e RK |
1090 | if(trackdb_deluser(vec[0])) |
1091 | sink_writes(ev_writer_sink(c->w), "550 Cannot deleted user\n"); | |
1092 | else | |
1093 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
1094 | return 1; | |
1095 | } | |
1096 | ||
1097 | static int c_edituser(struct conn *c, | |
5df73aeb | 1098 | char **vec, |
f0feb22e | 1099 | int attribute((unused)) nvec) { |
eb5dc014 RK |
1100 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1101 | * address and password. */ | |
1102 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1103 | || (!strcmp(c->who, vec[0]) |
1104 | && (!strcmp(vec[1], "email") | |
1105 | || !strcmp(vec[1], "password")))) { | |
1106 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) | |
1107 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); | |
1108 | else | |
1109 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1110 | } else | |
1111 | sink_writes(ev_writer_sink(c->w), "550 Restricted to administrators\n"); | |
f0feb22e RK |
1112 | return 1; |
1113 | } | |
1114 | ||
1115 | static int c_userinfo(struct conn *c, | |
1116 | char attribute((unused)) **vec, | |
1117 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1118 | struct kvp *k; |
1119 | const char *value; | |
eb5dc014 RK |
1120 | |
1121 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email | |
1122 | * address and righst list. */ | |
1123 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1124 | || (!strcmp(c->who, vec[0]) |
1125 | && (!strcmp(vec[1], "email") | |
1126 | || !strcmp(vec[1], "rights")))) { | |
1127 | if((k = trackdb_getuserinfo(vec[0]))) | |
1128 | if((value = kvp_get(k, vec[1]))) | |
1129 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1130 | else | |
1131 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1132 | else | |
1133 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
1134 | } else | |
1135 | sink_writes(ev_writer_sink(c->w), "550 Restricted to administrators\n"); | |
f0feb22e RK |
1136 | return 1; |
1137 | } | |
1138 | ||
c3be4f19 RK |
1139 | static int c_users(struct conn *c, |
1140 | char attribute((unused)) **vec, | |
1141 | int attribute((unused)) nvec) { | |
1142 | /* TODO de-dupe with c_tags */ | |
1143 | char **users = trackdb_listusers(); | |
1144 | ||
1145 | sink_writes(ev_writer_sink(c->w), "253 User list follows\n"); | |
1146 | while(*users) { | |
1147 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1148 | **users == '.' ? "." : "", *users); | |
1149 | ++users; | |
1150 | } | |
1151 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1152 | return 1; /* completed */ | |
1153 | } | |
1154 | ||
460b9539 | 1155 | static const struct command { |
eb5dc014 | 1156 | /** @brief Command name */ |
460b9539 | 1157 | const char *name; |
eb5dc014 RK |
1158 | |
1159 | /** @brief Minimum number of arguments */ | |
1160 | int minargs; | |
1161 | ||
1162 | /** @brief Maximum number of arguments */ | |
1163 | int maxargs; | |
1164 | ||
1165 | /** @brief Function to process command */ | |
460b9539 | 1166 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1167 | |
1168 | /** @brief Rights required to execute command | |
1169 | * | |
1170 | * 0 means that the command can be issued without logging in. If multiple | |
1171 | * bits are listed here any of those rights will do. | |
1172 | */ | |
1173 | rights_type rights; | |
460b9539 | 1174 | } commands[] = { |
eb5dc014 RK |
1175 | { "adduser", 2, 2, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL }, |
1176 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, | |
b12be54a | 1177 | { "cookie", 1, 1, c_cookie, 0 }, |
eb5dc014 RK |
1178 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL }, |
1179 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, | |
1180 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1181 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1182 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1183 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1184 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1185 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1186 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1187 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1188 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1189 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1190 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1191 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1192 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1193 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1194 | { "nop", 0, 0, c_nop, 0 }, | |
1195 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1196 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1197 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
1198 | { "playing", 0, 0, c_playing, RIGHT_READ }, | |
1199 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, | |
1200 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1201 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1202 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1203 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1204 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1205 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
1206 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, | |
1207 | { "rescan", 0, 0, c_rescan, RIGHT_RESCAN }, | |
1208 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, | |
1209 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1210 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1211 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
1212 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, | |
1213 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1214 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1215 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1216 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1217 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1218 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1219 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1220 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 1221 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
1222 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
1223 | { "users", 0, 0, c_users, RIGHT_READ }, | |
1224 | { "version", 0, 0, c_version, RIGHT_READ }, | |
1225 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 1226 | }; |
1227 | ||
1228 | static void command_error(const char *msg, void *u) { | |
1229 | struct conn *c = u; | |
1230 | ||
1231 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
1232 | } | |
1233 | ||
1234 | /* process a command. Return 1 if complete, 0 if incomplete. */ | |
1235 | static int command(struct conn *c, char *line) { | |
1236 | char **vec; | |
1237 | int nvec, n; | |
1238 | ||
1239 | D(("server command %s", line)); | |
f9635e06 RK |
1240 | /* We force everything into NFC as early as possible */ |
1241 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
1242 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
1243 | return 1; | |
1244 | } | |
460b9539 | 1245 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
1246 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
1247 | return 1; | |
1248 | } | |
1249 | if(nvec == 0) { | |
1250 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
1251 | return 1; | |
1252 | } | |
1253 | if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0) | |
1254 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); | |
1255 | else { | |
eb5dc014 RK |
1256 | if(commands[n].rights |
1257 | && !(c->rights & commands[n].rights)) { | |
1258 | sink_writes(ev_writer_sink(c->w), "530 Prohibited\n"); | |
460b9539 | 1259 | return 1; |
1260 | } | |
1261 | ++vec; | |
1262 | --nvec; | |
1263 | if(nvec < commands[n].minargs) { | |
1264 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
1265 | return 1; | |
1266 | } | |
1267 | if(nvec > commands[n].maxargs) { | |
1268 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
1269 | return 1; | |
1270 | } | |
1271 | return commands[n].fn(c, vec, nvec); | |
1272 | } | |
1273 | return 1; /* completed */ | |
1274 | } | |
1275 | ||
1276 | /* redirect to the right reader callback for our current state */ | |
1277 | static int redirect_reader_callback(ev_source *ev, | |
1278 | ev_reader *reader, | |
460b9539 | 1279 | void *ptr, |
1280 | size_t bytes, | |
1281 | int eof, | |
1282 | void *u) { | |
1283 | struct conn *c = u; | |
1284 | ||
75d64210 | 1285 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 1286 | } |
1287 | ||
1288 | /* the main command reader */ | |
1289 | static int reader_callback(ev_source attribute((unused)) *ev, | |
1290 | ev_reader *reader, | |
460b9539 | 1291 | void *ptr, |
1292 | size_t bytes, | |
1293 | int eof, | |
1294 | void *u) { | |
1295 | struct conn *c = u; | |
1296 | char *eol; | |
1297 | int complete; | |
1298 | ||
1299 | D(("server reader_callback")); | |
1300 | while((eol = memchr(ptr, '\n', bytes))) { | |
1301 | *eol++ = 0; | |
1302 | ev_reader_consume(reader, eol - (char *)ptr); | |
1303 | complete = command(c, ptr); | |
1304 | bytes -= (eol - (char *)ptr); | |
1305 | ptr = eol; | |
1306 | if(!complete) { | |
1307 | /* the command had better have set a new reader callback */ | |
1308 | if(bytes || eof) | |
1309 | /* there are further bytes to read, or we are at eof; arrange for the | |
1310 | * command's reader callback to handle them */ | |
1311 | return ev_reader_incomplete(reader); | |
1312 | /* nothing's going on right now */ | |
1313 | return 0; | |
1314 | } | |
1315 | /* command completed, we can go around and handle the next one */ | |
1316 | } | |
1317 | if(eof) { | |
1318 | if(bytes) | |
1319 | error(0, "S%x unterminated line", c->tag); | |
8d8b8c1f | 1320 | D(("normal reader close")); |
397ef7bb RK |
1321 | c->r = 0; |
1322 | if(c->w) { | |
8d8b8c1f | 1323 | D(("close associated writer")); |
397ef7bb RK |
1324 | ev_writer_close(c->w); |
1325 | c->w = 0; | |
1326 | } | |
460b9539 | 1327 | } |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static int listen_callback(ev_source *ev, | |
1332 | int fd, | |
1333 | const struct sockaddr attribute((unused)) *remote, | |
1334 | socklen_t attribute((unused)) rlen, | |
1335 | void *u) { | |
1336 | const struct listener *l = u; | |
1337 | struct conn *c = xmalloc(sizeof *c); | |
1338 | static unsigned tags; | |
1339 | ||
1340 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
1341 | nonblock(fd); | |
1342 | cloexec(fd); | |
1343 | c->tag = tags++; | |
1344 | c->ev = ev; | |
e8c92ba7 RK |
1345 | c->w = ev_writer_new(ev, fd, writer_error, c, |
1346 | "client writer"); | |
1347 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, | |
1348 | "client reader"); | |
75d64210 | 1349 | ev_tie(c->r, c->w); |
460b9539 | 1350 | c->fd = fd; |
1351 | c->reader = reader_callback; | |
1352 | c->l = l; | |
eb5dc014 | 1353 | c->rights = 0; |
460b9539 | 1354 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
1355 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
1356 | 2, | |
b3141726 RK |
1357 | config->authorization_algorithm, |
1358 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 1359 | return 0; |
1360 | } | |
1361 | ||
1362 | int server_start(ev_source *ev, int pf, | |
1363 | size_t socklen, const struct sockaddr *sa, | |
1364 | const char *name) { | |
1365 | int fd; | |
1366 | struct listener *l = xmalloc(sizeof *l); | |
1367 | static const int one = 1; | |
1368 | ||
1369 | D(("server_init socket %s", name)); | |
1370 | fd = xsocket(pf, SOCK_STREAM, 0); | |
1371 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
1372 | if(bind(fd, sa, socklen) < 0) { | |
1373 | error(errno, "error binding to %s", name); | |
1374 | return -1; | |
1375 | } | |
1376 | xlisten(fd, 128); | |
1377 | nonblock(fd); | |
1378 | cloexec(fd); | |
1379 | l->name = name; | |
1380 | l->pf = pf; | |
e8c92ba7 RK |
1381 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
1382 | exit(EXIT_FAILURE); | |
460b9539 | 1383 | return fd; |
1384 | } | |
1385 | ||
1386 | int server_stop(ev_source *ev, int fd) { | |
1387 | xclose(fd); | |
1388 | return ev_listen_cancel(ev, fd); | |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | Local Variables: | |
1393 | c-basic-offset:2 | |
1394 | comment-column:40 | |
1395 | fill-column:79 | |
1396 | End: | |
1397 | */ |