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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" | |
54 | #include "trackdb.h" | |
55 | #include "table.h" | |
56 | #include "kvp.h" | |
57 | #include "mixer.h" | |
58 | #include "sink.h" | |
59 | #include "authhash.h" | |
60 | #include "plugin.h" | |
61 | #include "printf.h" | |
62 | #include "trackname.h" | |
63 | #include "eventlog.h" | |
64 | #include "defs.h" | |
65 | #include "cache.h" | |
66 | ||
67 | #ifndef NONCE_SIZE | |
68 | # define NONCE_SIZE 16 | |
69 | #endif | |
70 | ||
71 | int volume_left, volume_right; /* last known volume */ | |
72 | ||
18e6d6e6 | 73 | /** @brief Accept all well-formed login attempts |
74 | * | |
75 | * Used in debugging. | |
76 | */ | |
77 | int wideopen; | |
78 | ||
460b9539 | 79 | struct listener { |
80 | const char *name; | |
81 | int pf; | |
82 | }; | |
83 | ||
84 | struct conn { | |
85 | ev_reader *r; | |
86 | ev_writer *w; | |
87 | int fd; | |
88 | unsigned tag; | |
89 | char *who; | |
90 | ev_source *ev; | |
91 | unsigned char nonce[NONCE_SIZE]; | |
92 | ev_reader_callback *reader; | |
93 | struct eventlog_output *lo; | |
94 | const struct listener *l; | |
95 | }; | |
96 | ||
97 | static int reader_callback(ev_source *ev, | |
98 | ev_reader *reader, | |
460b9539 | 99 | void *ptr, |
100 | size_t bytes, | |
101 | int eof, | |
102 | void *u); | |
103 | ||
104 | static const char *noyes[] = { "no", "yes" }; | |
105 | ||
106 | static int writer_error(ev_source attribute((unused)) *ev, | |
460b9539 | 107 | int errno_value, |
108 | void *u) { | |
109 | struct conn *c = u; | |
110 | ||
75d64210 | 111 | D(("server writer_error %d", errno_value)); |
460b9539 | 112 | if(errno_value == 0) { |
113 | /* writer is done */ | |
75d64210 | 114 | error(errno_value, "S%x writer completed", c->tag); /* TODO */ |
460b9539 | 115 | } else { |
116 | if(errno_value != EPIPE) | |
117 | error(errno_value, "S%x write error on socket", c->tag); | |
75d64210 | 118 | ev_reader_cancel(c->r); |
460b9539 | 119 | } |
75d64210 | 120 | ev_report(ev); |
460b9539 | 121 | return 0; |
122 | } | |
123 | ||
124 | static int reader_error(ev_source attribute((unused)) *ev, | |
460b9539 | 125 | int errno_value, |
126 | void *u) { | |
127 | struct conn *c = u; | |
128 | ||
75d64210 | 129 | D(("server reader_error %d", errno_value)); |
460b9539 | 130 | error(errno, "S%x read error on socket", c->tag); |
75d64210 | 131 | ev_writer_close(c->w); |
768d7355 | 132 | ev_report(ev); |
460b9539 | 133 | return 0; |
134 | } | |
135 | ||
136 | /* return true if we are talking to a trusted user */ | |
137 | static int trusted(struct conn *c) { | |
138 | int n; | |
139 | ||
140 | for(n = 0; (n < config->trust.n | |
141 | && strcmp(config->trust.s[n], c->who)); ++n) | |
142 | ; | |
143 | return n < config->trust.n; | |
144 | } | |
145 | ||
146 | static int c_disable(struct conn *c, char **vec, int nvec) { | |
147 | if(nvec == 0) | |
148 | disable_playing(c->who); | |
149 | else if(nvec == 1 && !strcmp(vec[0], "now")) | |
150 | disable_playing(c->who); | |
151 | else { | |
152 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
153 | return 1; /* completed */ | |
154 | } | |
155 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
156 | return 1; /* completed */ | |
157 | } | |
158 | ||
159 | static int c_enable(struct conn *c, | |
160 | char attribute((unused)) **vec, | |
161 | int attribute((unused)) nvec) { | |
162 | enable_playing(c->who, c->ev); | |
163 | /* Enable implicitly unpauses if there is nothing playing */ | |
164 | if(paused && !playing) resume_playing(c->who); | |
165 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
166 | return 1; /* completed */ | |
167 | } | |
168 | ||
169 | static int c_enabled(struct conn *c, | |
170 | char attribute((unused)) **vec, | |
171 | int attribute((unused)) nvec) { | |
172 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
173 | return 1; /* completed */ | |
174 | } | |
175 | ||
176 | static int c_play(struct conn *c, char **vec, | |
177 | int attribute((unused)) nvec) { | |
178 | const char *track; | |
179 | struct queue_entry *q; | |
180 | ||
181 | if(!trackdb_exists(vec[0])) { | |
182 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
183 | return 1; | |
184 | } | |
185 | if(!(track = trackdb_resolve(vec[0]))) { | |
186 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
187 | return 1; | |
188 | } | |
189 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM); | |
190 | queue_write(); | |
191 | /* If we added the first track, and something is playing, then prepare the | |
192 | * new track. If nothing is playing then we don't bother as it wouldn't gain | |
193 | * anything. */ | |
194 | if(q == qhead.next && playing) | |
195 | prepare(c->ev, q); | |
196 | sink_writes(ev_writer_sink(c->w), "250 queued\n"); | |
197 | /* If the queue was empty but we are for some reason paused then | |
198 | * unpause. */ | |
199 | if(!playing) resume_playing(0); | |
200 | play(c->ev); | |
201 | return 1; /* completed */ | |
202 | } | |
203 | ||
204 | static int c_remove(struct conn *c, char **vec, | |
205 | int attribute((unused)) nvec) { | |
206 | struct queue_entry *q; | |
207 | ||
208 | if(!(q = queue_find(vec[0]))) { | |
209 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
210 | return 1; | |
211 | } | |
212 | if(config->restrictions & RESTRICT_REMOVE) { | |
213 | /* can only remove tracks that you submitted */ | |
214 | if(!q->submitter || strcmp(q->submitter, c->who)) { | |
215 | sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n"); | |
216 | return 1; | |
217 | } | |
218 | } | |
219 | queue_remove(q, c->who); | |
220 | /* De-prepare the track. */ | |
221 | abandon(c->ev, q); | |
222 | /* If we removed the random track then add another one. */ | |
223 | if(q->state == playing_random) | |
224 | add_random_track(); | |
225 | /* Prepare whatever the next head track is. */ | |
226 | if(qhead.next != &qhead) | |
227 | prepare(c->ev, qhead.next); | |
228 | queue_write(); | |
229 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
230 | return 1; /* completed */ | |
231 | } | |
232 | ||
233 | static int c_scratch(struct conn *c, | |
234 | char **vec, | |
235 | int nvec) { | |
236 | if(!playing) { | |
237 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
238 | return 1; /* completed */ | |
239 | } | |
240 | if(config->restrictions & RESTRICT_SCRATCH) { | |
241 | /* can only scratch tracks you submitted and randomly selected ones */ | |
242 | if(playing->submitter && strcmp(playing->submitter, c->who)) { | |
243 | sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n"); | |
244 | return 1; | |
245 | } | |
246 | } | |
247 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
248 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
249 | resume_playing(0); | |
250 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
251 | return 1; /* completed */ | |
252 | } | |
253 | ||
254 | static int c_pause(struct conn *c, | |
255 | char attribute((unused)) **vec, | |
256 | int attribute((unused)) nvec) { | |
257 | if(!playing) { | |
258 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
259 | return 1; /* completed */ | |
260 | } | |
261 | if(paused) { | |
262 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
263 | return 1; /* completed */ | |
264 | } | |
265 | if(pause_playing(c->who) < 0) | |
266 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
267 | else | |
268 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
269 | return 1; | |
270 | } | |
271 | ||
272 | static int c_resume(struct conn *c, | |
273 | char attribute((unused)) **vec, | |
274 | int attribute((unused)) nvec) { | |
275 | if(!paused) { | |
276 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
277 | return 1; /* completed */ | |
278 | } | |
279 | resume_playing(c->who); | |
280 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
281 | return 1; | |
282 | } | |
283 | ||
284 | static int c_shutdown(struct conn *c, | |
285 | char attribute((unused)) **vec, | |
286 | int attribute((unused)) nvec) { | |
287 | info("S%x shut down by %s", c->tag, c->who); | |
288 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); | |
289 | ev_writer_flush(c->w); | |
290 | quit(c->ev); | |
291 | } | |
292 | ||
293 | static int c_reconfigure(struct conn *c, | |
294 | char attribute((unused)) **vec, | |
295 | int attribute((unused)) nvec) { | |
296 | info("S%x reconfigure by %s", c->tag, c->who); | |
297 | if(reconfigure(c->ev, 1)) | |
298 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
299 | else | |
300 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
301 | return 1; /* completed */ | |
302 | } | |
303 | ||
304 | static int c_rescan(struct conn *c, | |
305 | char attribute((unused)) **vec, | |
306 | int attribute((unused)) nvec) { | |
307 | info("S%x rescan by %s", c->tag, c->who); | |
308 | trackdb_rescan(c->ev); | |
309 | sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n"); | |
310 | return 1; /* completed */ | |
311 | } | |
312 | ||
313 | static int c_version(struct conn *c, | |
314 | char attribute((unused)) **vec, | |
315 | int attribute((unused)) nvec) { | |
316 | /* VERSION had better only use the basic character set */ | |
317 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_version_string); | |
318 | return 1; /* completed */ | |
319 | } | |
320 | ||
321 | static int c_playing(struct conn *c, | |
322 | char attribute((unused)) **vec, | |
323 | int attribute((unused)) nvec) { | |
324 | if(playing) { | |
325 | queue_fix_sofar(playing); | |
326 | playing->expected = 0; | |
327 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
328 | } else | |
329 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
330 | return 1; /* completed */ | |
331 | } | |
332 | ||
333 | static int c_become(struct conn *c, | |
334 | char **vec, | |
335 | int attribute((unused)) nvec) { | |
336 | c->who = vec[0]; | |
337 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); | |
338 | return 1; | |
339 | } | |
340 | ||
341 | static int c_user(struct conn *c, | |
342 | char **vec, | |
343 | int attribute((unused)) nvec) { | |
344 | int n; | |
345 | const char *res; | |
346 | union { | |
347 | struct sockaddr sa; | |
348 | struct sockaddr_in in; | |
349 | struct sockaddr_in6 in6; | |
350 | } u; | |
351 | socklen_t l; | |
352 | char host[1024]; | |
353 | ||
354 | if(c->who) { | |
355 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
356 | return 1; | |
357 | } | |
358 | /* get connection data */ | |
359 | l = sizeof u; | |
360 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
361 | error(errno, "S%x error calling getpeername", c->tag); | |
362 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
363 | return 1; | |
364 | } | |
365 | if(c->l->pf != PF_UNIX) { | |
366 | if((n = getnameinfo(&u.sa, l, | |
367 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
368 | error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n)); | |
369 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
370 | return 1; | |
371 | } | |
18e6d6e6 | 372 | } else |
373 | strcpy(host, "local"); | |
460b9539 | 374 | /* find the user */ |
375 | for(n = 0; n < config->allow.n | |
376 | && strcmp(config->allow.s[n].s[0], vec[0]); ++n) | |
377 | ; | |
378 | /* if it's a real user check whether the response is right */ | |
18e6d6e6 | 379 | if(n >= config->allow.n) { |
380 | info("S%x unknown user '%s' from %s", c->tag, vec[0], host); | |
381 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
382 | return 1; | |
383 | } | |
637fdea3 RK |
384 | res = authhash(c->nonce, sizeof c->nonce, config->allow.s[n].s[1], |
385 | config->authorization_algorithm); | |
18e6d6e6 | 386 | if(wideopen || (res && !strcmp(res, vec[1]))) { |
387 | c->who = vec[0]; | |
388 | /* currently we only bother logging remote connections */ | |
389 | if(c->l->pf != PF_UNIX) | |
390 | info("S%x %s connected from %s", c->tag, vec[0], host); | |
391 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); | |
392 | return 1; | |
460b9539 | 393 | } |
394 | /* oops, response was wrong */ | |
18e6d6e6 | 395 | info("S%x authentication failure for %s from %s", c->tag, vec[0], host); |
460b9539 | 396 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
397 | return 1; | |
398 | } | |
399 | ||
400 | static int c_recent(struct conn *c, | |
401 | char attribute((unused)) **vec, | |
402 | int attribute((unused)) nvec) { | |
403 | const struct queue_entry *q; | |
404 | ||
405 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
406 | for(q = phead.next; q != &phead; q = q->next) | |
407 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
408 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
409 | return 1; /* completed */ | |
410 | } | |
411 | ||
412 | static int c_queue(struct conn *c, | |
413 | char attribute((unused)) **vec, | |
414 | int attribute((unused)) nvec) { | |
415 | struct queue_entry *q; | |
416 | time_t when = 0; | |
417 | const char *l; | |
418 | long length; | |
419 | ||
420 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
421 | if(playing_is_enabled() && !paused) { | |
422 | if(playing) { | |
423 | queue_fix_sofar(playing); | |
424 | if((l = trackdb_get(playing->track, "_length")) | |
425 | && (length = atol(l))) { | |
426 | time(&when); | |
427 | when += length - playing->sofar + config->gap; | |
428 | } | |
429 | } else | |
430 | /* Nothing is playing but playing is enabled, so whatever is | |
431 | * first in the queue can be expected to start immediately. */ | |
432 | time(&when); | |
433 | } | |
434 | for(q = qhead.next; q != &qhead; q = q->next) { | |
435 | /* fill in estimated start time */ | |
436 | q->expected = when; | |
437 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
438 | /* update for next track */ | |
439 | if(when) { | |
440 | if((l = trackdb_get(q->track, "_length")) | |
441 | && (length = atol(l))) | |
442 | when += length + config->gap; | |
443 | else | |
444 | when = 0; | |
445 | } | |
446 | } | |
447 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
448 | return 1; /* completed */ | |
449 | } | |
450 | ||
451 | static int output_list(struct conn *c, char **vec) { | |
452 | while(*vec) | |
453 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
454 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
455 | return 1; | |
456 | } | |
457 | ||
458 | static int files_dirs(struct conn *c, | |
459 | char **vec, | |
460 | int nvec, | |
461 | enum trackdb_listable what) { | |
462 | const char *dir, *re, *errstr; | |
463 | int erroffset; | |
464 | pcre *rec; | |
465 | char **fvec, *key; | |
466 | ||
467 | switch(nvec) { | |
468 | case 0: dir = 0; re = 0; break; | |
469 | case 1: dir = vec[0]; re = 0; break; | |
470 | case 2: dir = vec[0]; re = vec[1]; break; | |
471 | default: abort(); | |
472 | } | |
473 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
474 | if(dir && strchr(dir, '\n')) { | |
475 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
476 | return 1; | |
477 | } | |
478 | if(re && strchr(re, '\n')) { | |
479 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
480 | return 1; | |
481 | } | |
482 | /* We bother eliminating "" because the web interface is relatively | |
483 | * likely to send it */ | |
484 | if(re && *re) { | |
485 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
486 | fvec = (char **)cache_get(&cache_files_type, key); | |
487 | if(fvec) { | |
488 | /* Got a cache hit, don't store the answer in the cache */ | |
489 | key = 0; | |
490 | ++cache_files_hits; | |
491 | rec = 0; /* quieten compiler */ | |
492 | } else { | |
493 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
494 | * in the cache. */ | |
495 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
496 | &errstr, &erroffset, 0))) { | |
497 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
498 | errstr); | |
499 | return 1; | |
500 | } | |
501 | /* It only counts as a miss if the regexp was valid. */ | |
502 | ++cache_files_misses; | |
503 | } | |
504 | } else { | |
505 | /* No regexp, don't bother caching the result */ | |
506 | rec = 0; | |
507 | key = 0; | |
508 | fvec = 0; | |
509 | } | |
510 | if(!fvec) { | |
511 | /* No cache hit (either because a miss, or because we did not look) so do | |
512 | * the lookup */ | |
513 | if(dir && *dir) | |
514 | fvec = trackdb_list(dir, 0, what, rec); | |
515 | else | |
516 | fvec = trackdb_list(0, 0, what, rec); | |
517 | } | |
518 | if(key) | |
519 | /* Put the answer in the cache */ | |
520 | cache_put(&cache_files_type, key, fvec); | |
521 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
522 | return output_list(c, fvec); | |
523 | } | |
524 | ||
525 | static int c_files(struct conn *c, | |
526 | char **vec, | |
527 | int nvec) { | |
528 | return files_dirs(c, vec, nvec, trackdb_files); | |
529 | } | |
530 | ||
531 | static int c_dirs(struct conn *c, | |
532 | char **vec, | |
533 | int nvec) { | |
534 | return files_dirs(c, vec, nvec, trackdb_directories); | |
535 | } | |
536 | ||
537 | static int c_allfiles(struct conn *c, | |
538 | char **vec, | |
539 | int nvec) { | |
540 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
541 | } | |
542 | ||
543 | static int c_get(struct conn *c, | |
544 | char **vec, | |
545 | int attribute((unused)) nvec) { | |
546 | const char *v; | |
547 | ||
548 | if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1]))) | |
549 | sink_printf(ev_writer_sink(c->w), "252 %s\n", v); | |
550 | else | |
551 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
552 | return 1; | |
553 | } | |
554 | ||
555 | static int c_length(struct conn *c, | |
556 | char **vec, | |
557 | int attribute((unused)) nvec) { | |
558 | const char *track, *v; | |
559 | ||
560 | if(!(track = trackdb_resolve(vec[0]))) { | |
561 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
562 | return 1; | |
563 | } | |
564 | if((v = trackdb_get(track, "_length"))) | |
565 | sink_printf(ev_writer_sink(c->w), "252 %s\n", v); | |
566 | else | |
567 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
568 | return 1; | |
569 | } | |
570 | ||
571 | static int c_set(struct conn *c, | |
572 | char **vec, | |
573 | int attribute((unused)) nvec) { | |
574 | if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2])) | |
575 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
576 | else | |
577 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
578 | return 1; | |
579 | } | |
580 | ||
581 | static int c_prefs(struct conn *c, | |
582 | char **vec, | |
583 | int attribute((unused)) nvec) { | |
584 | struct kvp *k; | |
585 | ||
586 | k = trackdb_get_all(vec[0]); | |
587 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); | |
588 | for(; k; k = k->next) | |
589 | if(k->name[0] != '_') /* omit internal values */ | |
590 | sink_printf(ev_writer_sink(c->w), | |
591 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
592 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
593 | return 1; | |
594 | } | |
595 | ||
596 | static int c_exists(struct conn *c, | |
597 | char **vec, | |
598 | int attribute((unused)) nvec) { | |
599 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); | |
600 | return 1; | |
601 | } | |
602 | ||
603 | static void search_parse_error(const char *msg, void *u) { | |
604 | *(const char **)u = msg; | |
605 | } | |
606 | ||
607 | static int c_search(struct conn *c, | |
608 | char **vec, | |
609 | int attribute((unused)) nvec) { | |
610 | char **terms, **results; | |
611 | int nterms, nresults, n; | |
612 | const char *e = "unknown error"; | |
613 | ||
614 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
615 | * interface a bit more convenient to add searching to, but it has the more | |
616 | * compelling advantage that if everything uses it, then interpretation of | |
617 | * user-supplied search strings will be the same everywhere. */ | |
618 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
619 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
620 | } else { | |
621 | results = trackdb_search(terms, nterms, &nresults); | |
622 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
623 | for(n = 0; n < nresults; ++n) | |
624 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
625 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
626 | } | |
627 | return 1; | |
628 | } | |
629 | ||
630 | static int c_random_enable(struct conn *c, | |
631 | char attribute((unused)) **vec, | |
632 | int attribute((unused)) nvec) { | |
633 | enable_random(c->who, c->ev); | |
634 | /* Enable implicitly unpauses if there is nothing playing */ | |
635 | if(paused && !playing) resume_playing(c->who); | |
636 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
637 | return 1; /* completed */ | |
638 | } | |
639 | ||
640 | static int c_random_disable(struct conn *c, | |
641 | char attribute((unused)) **vec, | |
642 | int attribute((unused)) nvec) { | |
643 | disable_random(c->who); | |
644 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
645 | return 1; /* completed */ | |
646 | } | |
647 | ||
648 | static int c_random_enabled(struct conn *c, | |
649 | char attribute((unused)) **vec, | |
650 | int attribute((unused)) nvec) { | |
651 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
652 | return 1; /* completed */ | |
653 | } | |
654 | ||
d6dde5a3 RK |
655 | static void got_stats(char *stats, void *u) { |
656 | struct conn *const c = u; | |
657 | ||
658 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
659 | /* Now we can start processing commands again */ | |
660 | ev_reader_enable(c->r); | |
661 | } | |
662 | ||
460b9539 | 663 | static int c_stats(struct conn *c, |
664 | char attribute((unused)) **vec, | |
665 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
666 | trackdb_stats_subprocess(c->ev, got_stats, c); |
667 | return 0; /* not yet complete */ | |
460b9539 | 668 | } |
669 | ||
670 | static int c_volume(struct conn *c, | |
671 | char **vec, | |
672 | int nvec) { | |
673 | int l, r, set; | |
674 | char lb[32], rb[32]; | |
675 | ||
676 | switch(nvec) { | |
677 | case 0: | |
678 | set = 0; | |
679 | break; | |
680 | case 1: | |
681 | l = r = atoi(vec[0]); | |
682 | set = 1; | |
683 | break; | |
684 | case 2: | |
685 | l = atoi(vec[0]); | |
686 | r = atoi(vec[1]); | |
687 | set = 1; | |
688 | break; | |
689 | default: | |
690 | abort(); | |
691 | } | |
692 | if(mixer_control(&l, &r, set)) | |
693 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); | |
694 | else { | |
695 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); | |
696 | if(l != volume_left || r != volume_right) { | |
697 | volume_left = l; | |
698 | volume_right = r; | |
699 | snprintf(lb, sizeof lb, "%d", l); | |
700 | snprintf(rb, sizeof rb, "%d", r); | |
701 | eventlog("volume", lb, rb, (char *)0); | |
702 | } | |
703 | } | |
704 | return 1; | |
705 | } | |
706 | ||
707 | /* we are logging, and some data is available to read */ | |
708 | static int logging_reader_callback(ev_source *ev, | |
709 | ev_reader *reader, | |
460b9539 | 710 | void *ptr, |
711 | size_t bytes, | |
712 | int eof, | |
713 | void *u) { | |
714 | struct conn *c = u; | |
715 | ||
716 | /* don't log to this conn any more */ | |
717 | eventlog_remove(c->lo); | |
f6033c46 RK |
718 | if(c->w) { |
719 | /* Terminate the log output, but only if the writer hasn't been killed off | |
720 | * from a failure on some earlier write */ | |
721 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
722 | } | |
460b9539 | 723 | /* restore the reader callback */ |
724 | c->reader = reader_callback; | |
725 | /* ...and exit via it */ | |
75d64210 | 726 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 727 | } |
728 | ||
729 | static void logclient(const char *msg, void *user) { | |
730 | struct conn *c = user; | |
731 | ||
f6033c46 RK |
732 | if(!c->w || !c->r) { |
733 | /* This connection has gone up in smoke for some reason */ | |
734 | eventlog_remove(c->lo); | |
735 | return; | |
736 | } | |
460b9539 | 737 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
738 | (uintmax_t)time(0), msg); | |
739 | } | |
740 | ||
741 | static int c_log(struct conn *c, | |
742 | char attribute((unused)) **vec, | |
743 | int attribute((unused)) nvec) { | |
744 | time_t now; | |
745 | ||
746 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
747 | /* pump out initial state */ | |
748 | time(&now); | |
749 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
750 | (uintmax_t)now, | |
751 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
752 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
753 | (uintmax_t)now, | |
754 | random_is_enabled() ? "enable_random" : "disable_random"); | |
755 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
756 | (uintmax_t)now, | |
757 | paused ? "pause" : "resume"); | |
5abe307a RK |
758 | if(playing) |
759 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
760 | (uintmax_t)now); | |
df44d69b RK |
761 | /* Initial volume */ |
762 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
763 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 764 | c->lo = xmalloc(sizeof *c->lo); |
765 | c->lo->fn = logclient; | |
766 | c->lo->user = c; | |
767 | eventlog_add(c->lo); | |
768 | c->reader = logging_reader_callback; | |
769 | return 0; | |
770 | } | |
771 | ||
772 | static void post_move_cleanup(void) { | |
773 | struct queue_entry *q; | |
774 | ||
138baa2d RK |
775 | /* If we have caused any random tracks to not be at the end then we make them |
776 | * no longer be random. */ | |
460b9539 | 777 | for(q = qhead.next; q != &qhead; q = q->next) |
778 | if(q->state == playing_random && q->next != &qhead) | |
779 | q->state = playing_unplayed; | |
780 | /* That might mean we need to add a new random track. */ | |
781 | add_random_track(); | |
782 | queue_write(); | |
783 | } | |
784 | ||
785 | static int c_move(struct conn *c, | |
786 | char **vec, | |
787 | int attribute((unused)) nvec) { | |
788 | struct queue_entry *q; | |
789 | int n; | |
790 | ||
791 | if(config->restrictions & RESTRICT_MOVE) { | |
792 | if(!trusted(c)) { | |
793 | sink_writes(ev_writer_sink(c->w), | |
794 | "550 only trusted users can move tracks\n"); | |
795 | return 1; | |
796 | } | |
797 | } | |
798 | if(!(q = queue_find(vec[0]))) { | |
799 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
800 | return 1; | |
801 | } | |
802 | n = queue_move(q, atoi(vec[1]), c->who); | |
803 | post_move_cleanup(); | |
804 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); | |
805 | /* If we've moved to the head of the queue then prepare the track. */ | |
806 | if(q == qhead.next) | |
807 | prepare(c->ev, q); | |
808 | return 1; | |
809 | } | |
810 | ||
811 | static int c_moveafter(struct conn *c, | |
812 | char **vec, | |
813 | int attribute((unused)) nvec) { | |
814 | struct queue_entry *q, **qs; | |
815 | int n; | |
816 | ||
817 | if(config->restrictions & RESTRICT_MOVE) { | |
818 | if(!trusted(c)) { | |
819 | sink_writes(ev_writer_sink(c->w), | |
820 | "550 only trusted users can move tracks\n"); | |
821 | return 1; | |
822 | } | |
823 | } | |
824 | if(vec[0][0]) { | |
825 | if(!(q = queue_find(vec[0]))) { | |
826 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
827 | return 1; | |
828 | } | |
829 | } else | |
830 | q = 0; | |
831 | ++vec; | |
832 | --nvec; | |
833 | qs = xcalloc(nvec, sizeof *qs); | |
834 | for(n = 0; n < nvec; ++n) | |
835 | if(!(qs[n] = queue_find(vec[n]))) { | |
836 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
837 | return 1; | |
838 | } | |
839 | queue_moveafter(q, nvec, qs, c->who); | |
840 | post_move_cleanup(); | |
841 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); | |
842 | /* If we've moved to the head of the queue then prepare the track. */ | |
843 | if(q == qhead.next) | |
844 | prepare(c->ev, q); | |
845 | return 1; | |
846 | } | |
847 | ||
848 | static int c_part(struct conn *c, | |
849 | char **vec, | |
850 | int attribute((unused)) nvec) { | |
851 | sink_printf(ev_writer_sink(c->w), "252 %s\n", | |
852 | trackdb_getpart(vec[0], vec[1], vec[2])); | |
853 | return 1; | |
854 | } | |
855 | ||
856 | static int c_resolve(struct conn *c, | |
857 | char **vec, | |
858 | int attribute((unused)) nvec) { | |
859 | const char *track; | |
860 | ||
861 | if(!(track = trackdb_resolve(vec[0]))) { | |
862 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
863 | return 1; | |
864 | } | |
865 | sink_printf(ev_writer_sink(c->w), "252 %s\n", track); | |
866 | return 1; | |
867 | } | |
868 | ||
869 | static int c_tags(struct conn *c, | |
870 | char attribute((unused)) **vec, | |
871 | int attribute((unused)) nvec) { | |
872 | char **tags = trackdb_alltags(); | |
873 | ||
874 | sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n"); | |
875 | while(*tags) { | |
876 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
877 | **tags == '.' ? "." : "", *tags); | |
878 | ++tags; | |
879 | } | |
880 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
881 | return 1; /* completed */ | |
882 | ||
883 | } | |
884 | ||
885 | static int c_set_global(struct conn *c, | |
886 | char **vec, | |
887 | int attribute((unused)) nvec) { | |
888 | trackdb_set_global(vec[0], vec[1], c->who); | |
889 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
890 | return 1; | |
891 | } | |
892 | ||
893 | static int c_get_global(struct conn *c, | |
894 | char **vec, | |
895 | int attribute((unused)) nvec) { | |
896 | const char *s = trackdb_get_global(vec[0]); | |
897 | ||
898 | if(s) | |
899 | sink_printf(ev_writer_sink(c->w), "252 %s\n", s); | |
900 | else | |
901 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
902 | return 1; | |
903 | } | |
904 | ||
7858930d | 905 | static int c_nop(struct conn *c, |
906 | char attribute((unused)) **vec, | |
907 | int attribute((unused)) nvec) { | |
908 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
909 | return 1; | |
910 | } | |
911 | ||
2a10b70b RK |
912 | static int c_new(struct conn *c, |
913 | char **vec, | |
914 | int nvec) { | |
915 | char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX); | |
916 | ||
917 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); | |
918 | while(*tracks) { | |
919 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
920 | **tracks == '.' ? "." : "", *tracks); | |
921 | ++tracks; | |
922 | } | |
923 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
924 | return 1; /* completed */ | |
925 | ||
926 | } | |
927 | ||
ca831831 RK |
928 | static int c_rtp_address(struct conn *c, |
929 | char attribute((unused)) **vec, | |
930 | int attribute((unused)) nvec) { | |
931 | if(config->speaker_backend == BACKEND_NETWORK) { | |
932 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", | |
933 | quoteutf8(config->broadcast.s[0]), | |
934 | quoteutf8(config->broadcast.s[1])); | |
935 | } else | |
936 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
937 | return 1; | |
938 | } | |
939 | ||
460b9539 | 940 | #define C_AUTH 0001 /* must be authenticated */ |
941 | #define C_TRUSTED 0002 /* must be trusted user */ | |
942 | ||
943 | static const struct command { | |
944 | const char *name; | |
945 | int minargs, maxargs; | |
946 | int (*fn)(struct conn *, char **, int); | |
947 | unsigned flags; | |
948 | } commands[] = { | |
949 | { "allfiles", 0, 2, c_allfiles, C_AUTH }, | |
950 | { "become", 1, 1, c_become, C_AUTH|C_TRUSTED }, | |
951 | { "dirs", 0, 2, c_dirs, C_AUTH }, | |
952 | { "disable", 0, 1, c_disable, C_AUTH }, | |
953 | { "enable", 0, 0, c_enable, C_AUTH }, | |
954 | { "enabled", 0, 0, c_enabled, C_AUTH }, | |
955 | { "exists", 1, 1, c_exists, C_AUTH }, | |
956 | { "files", 0, 2, c_files, C_AUTH }, | |
957 | { "get", 2, 2, c_get, C_AUTH }, | |
958 | { "get-global", 1, 1, c_get_global, C_AUTH }, | |
959 | { "length", 1, 1, c_length, C_AUTH }, | |
960 | { "log", 0, 0, c_log, C_AUTH }, | |
961 | { "move", 2, 2, c_move, C_AUTH }, | |
962 | { "moveafter", 1, INT_MAX, c_moveafter, C_AUTH }, | |
2a10b70b | 963 | { "new", 0, 1, c_new, C_AUTH }, |
7858930d | 964 | { "nop", 0, 0, c_nop, C_AUTH }, |
460b9539 | 965 | { "part", 3, 3, c_part, C_AUTH }, |
966 | { "pause", 0, 0, c_pause, C_AUTH }, | |
967 | { "play", 1, 1, c_play, C_AUTH }, | |
968 | { "playing", 0, 0, c_playing, C_AUTH }, | |
969 | { "prefs", 1, 1, c_prefs, C_AUTH }, | |
970 | { "queue", 0, 0, c_queue, C_AUTH }, | |
971 | { "random-disable", 0, 0, c_random_disable, C_AUTH }, | |
972 | { "random-enable", 0, 0, c_random_enable, C_AUTH }, | |
973 | { "random-enabled", 0, 0, c_random_enabled, C_AUTH }, | |
974 | { "recent", 0, 0, c_recent, C_AUTH }, | |
975 | { "reconfigure", 0, 0, c_reconfigure, C_AUTH|C_TRUSTED }, | |
976 | { "remove", 1, 1, c_remove, C_AUTH }, | |
977 | { "rescan", 0, 0, c_rescan, C_AUTH|C_TRUSTED }, | |
978 | { "resolve", 1, 1, c_resolve, C_AUTH }, | |
979 | { "resume", 0, 0, c_resume, C_AUTH }, | |
ca831831 | 980 | { "rtp-address", 0, 0, c_rtp_address, C_AUTH }, |
460b9539 | 981 | { "scratch", 0, 1, c_scratch, C_AUTH }, |
982 | { "search", 1, 1, c_search, C_AUTH }, | |
983 | { "set", 3, 3, c_set, C_AUTH, }, | |
984 | { "set-global", 2, 2, c_set_global, C_AUTH }, | |
985 | { "shutdown", 0, 0, c_shutdown, C_AUTH|C_TRUSTED }, | |
986 | { "stats", 0, 0, c_stats, C_AUTH }, | |
987 | { "tags", 0, 0, c_tags, C_AUTH }, | |
988 | { "unset", 2, 2, c_set, C_AUTH }, | |
989 | { "unset-global", 1, 1, c_set_global, C_AUTH }, | |
990 | { "user", 2, 2, c_user, 0 }, | |
991 | { "version", 0, 0, c_version, C_AUTH }, | |
992 | { "volume", 0, 2, c_volume, C_AUTH } | |
993 | }; | |
994 | ||
995 | static void command_error(const char *msg, void *u) { | |
996 | struct conn *c = u; | |
997 | ||
998 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
999 | } | |
1000 | ||
1001 | /* process a command. Return 1 if complete, 0 if incomplete. */ | |
1002 | static int command(struct conn *c, char *line) { | |
1003 | char **vec; | |
1004 | int nvec, n; | |
1005 | ||
1006 | D(("server command %s", line)); | |
1007 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { | |
1008 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
1009 | return 1; | |
1010 | } | |
1011 | if(nvec == 0) { | |
1012 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
1013 | return 1; | |
1014 | } | |
1015 | if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0) | |
1016 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); | |
1017 | else { | |
1018 | if((commands[n].flags & C_AUTH) && !c->who) { | |
1019 | sink_writes(ev_writer_sink(c->w), "530 not authenticated\n"); | |
1020 | return 1; | |
1021 | } | |
1022 | if((commands[n].flags & C_TRUSTED) && !trusted(c)) { | |
1023 | sink_writes(ev_writer_sink(c->w), "530 insufficient privilege\n"); | |
1024 | return 1; | |
1025 | } | |
1026 | ++vec; | |
1027 | --nvec; | |
1028 | if(nvec < commands[n].minargs) { | |
1029 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
1030 | return 1; | |
1031 | } | |
1032 | if(nvec > commands[n].maxargs) { | |
1033 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
1034 | return 1; | |
1035 | } | |
1036 | return commands[n].fn(c, vec, nvec); | |
1037 | } | |
1038 | return 1; /* completed */ | |
1039 | } | |
1040 | ||
1041 | /* redirect to the right reader callback for our current state */ | |
1042 | static int redirect_reader_callback(ev_source *ev, | |
1043 | ev_reader *reader, | |
460b9539 | 1044 | void *ptr, |
1045 | size_t bytes, | |
1046 | int eof, | |
1047 | void *u) { | |
1048 | struct conn *c = u; | |
1049 | ||
75d64210 | 1050 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 1051 | } |
1052 | ||
1053 | /* the main command reader */ | |
1054 | static int reader_callback(ev_source attribute((unused)) *ev, | |
1055 | ev_reader *reader, | |
460b9539 | 1056 | void *ptr, |
1057 | size_t bytes, | |
1058 | int eof, | |
1059 | void *u) { | |
1060 | struct conn *c = u; | |
1061 | char *eol; | |
1062 | int complete; | |
1063 | ||
1064 | D(("server reader_callback")); | |
1065 | while((eol = memchr(ptr, '\n', bytes))) { | |
1066 | *eol++ = 0; | |
1067 | ev_reader_consume(reader, eol - (char *)ptr); | |
1068 | complete = command(c, ptr); | |
1069 | bytes -= (eol - (char *)ptr); | |
1070 | ptr = eol; | |
1071 | if(!complete) { | |
1072 | /* the command had better have set a new reader callback */ | |
1073 | if(bytes || eof) | |
1074 | /* there are further bytes to read, or we are at eof; arrange for the | |
1075 | * command's reader callback to handle them */ | |
1076 | return ev_reader_incomplete(reader); | |
1077 | /* nothing's going on right now */ | |
1078 | return 0; | |
1079 | } | |
1080 | /* command completed, we can go around and handle the next one */ | |
1081 | } | |
1082 | if(eof) { | |
1083 | if(bytes) | |
1084 | error(0, "S%x unterminated line", c->tag); | |
1085 | c->r = 0; | |
1086 | return ev_writer_close(c->w); | |
1087 | } | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static int listen_callback(ev_source *ev, | |
1092 | int fd, | |
1093 | const struct sockaddr attribute((unused)) *remote, | |
1094 | socklen_t attribute((unused)) rlen, | |
1095 | void *u) { | |
1096 | const struct listener *l = u; | |
1097 | struct conn *c = xmalloc(sizeof *c); | |
1098 | static unsigned tags; | |
1099 | ||
1100 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
1101 | nonblock(fd); | |
1102 | cloexec(fd); | |
1103 | c->tag = tags++; | |
1104 | c->ev = ev; | |
e8c92ba7 RK |
1105 | c->w = ev_writer_new(ev, fd, writer_error, c, |
1106 | "client writer"); | |
1107 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, | |
1108 | "client reader"); | |
75d64210 | 1109 | ev_tie(c->r, c->w); |
460b9539 | 1110 | c->fd = fd; |
1111 | c->reader = reader_callback; | |
1112 | c->l = l; | |
1113 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); | |
637fdea3 RK |
1114 | if(!strcmp(config->authorization_algorithm, "sha1") |
1115 | || !strcmp(config->authorization_algorithm, "SHA1")) { | |
1116 | sink_printf(ev_writer_sink(c->w), "231 %s\n", | |
1117 | hex(c->nonce, sizeof c->nonce)); | |
1118 | } else { | |
1119 | sink_printf(ev_writer_sink(c->w), "231 %s %s\n", | |
1120 | config->authorization_algorithm, | |
1121 | hex(c->nonce, sizeof c->nonce)); | |
1122 | } | |
460b9539 | 1123 | return 0; |
1124 | } | |
1125 | ||
1126 | int server_start(ev_source *ev, int pf, | |
1127 | size_t socklen, const struct sockaddr *sa, | |
1128 | const char *name) { | |
1129 | int fd; | |
1130 | struct listener *l = xmalloc(sizeof *l); | |
1131 | static const int one = 1; | |
1132 | ||
1133 | D(("server_init socket %s", name)); | |
1134 | fd = xsocket(pf, SOCK_STREAM, 0); | |
1135 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
1136 | if(bind(fd, sa, socklen) < 0) { | |
1137 | error(errno, "error binding to %s", name); | |
1138 | return -1; | |
1139 | } | |
1140 | xlisten(fd, 128); | |
1141 | nonblock(fd); | |
1142 | cloexec(fd); | |
1143 | l->name = name; | |
1144 | l->pf = pf; | |
e8c92ba7 RK |
1145 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
1146 | exit(EXIT_FAILURE); | |
460b9539 | 1147 | return fd; |
1148 | } | |
1149 | ||
1150 | int server_stop(ev_source *ev, int fd) { | |
1151 | xclose(fd); | |
1152 | return ev_listen_cancel(ev, fd); | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | Local Variables: | |
1157 | c-basic-offset:2 | |
1158 | comment-column:40 | |
1159 | fill-column:79 | |
1160 | End: | |
1161 | */ |