Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
964e027d | 3 | * Copyright (C) 2004-2008 Richard Kettlewell |
460b9539 | 4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
05b75f8d | 21 | #include "disorder-server.h" |
460b9539 | 22 | |
23 | #ifndef NONCE_SIZE | |
24 | # define NONCE_SIZE 16 | |
25 | #endif | |
26 | ||
10114017 | 27 | #ifndef CONFIRM_SIZE |
28 | # define CONFIRM_SIZE 10 | |
29 | #endif | |
30 | ||
460b9539 | 31 | int volume_left, volume_right; /* last known volume */ |
32 | ||
18e6d6e6 | 33 | /** @brief Accept all well-formed login attempts |
34 | * | |
35 | * Used in debugging. | |
36 | */ | |
37 | int wideopen; | |
38 | ||
460b9539 | 39 | struct listener { |
40 | const char *name; | |
41 | int pf; | |
42 | }; | |
43 | ||
f65f5aff RK |
44 | struct conn; |
45 | ||
46 | /** @brief Signature for line reader callback | |
47 | * @param c Connection | |
48 | * @param line Line | |
49 | * @return 0 if incomplete, 1 if complete | |
50 | * | |
51 | * @p line is 0-terminated and excludes the newline. It points into the | |
52 | * input buffer so will become invalid shortly. | |
53 | */ | |
54 | typedef int line_reader_type(struct conn *c, | |
55 | char *line); | |
56 | ||
57 | /** @brief Signature for with-body command callbacks | |
58 | * @param c Connection | |
59 | * @param body List of body lines | |
60 | * @param nbody Number of body lines | |
61 | * @param u As passed to fetch_body() | |
62 | * @return 0 to suspend input, 1 if complete | |
63 | * | |
64 | * The body strings are allocated (so survive indefinitely) and don't include | |
65 | * newlines. | |
66 | */ | |
67 | typedef int body_callback_type(struct conn *c, | |
68 | char **body, | |
69 | int nbody, | |
70 | void *u); | |
71 | ||
397ef7bb | 72 | /** @brief One client connection */ |
460b9539 | 73 | struct conn { |
397ef7bb | 74 | /** @brief Read commands from here */ |
460b9539 | 75 | ev_reader *r; |
397ef7bb | 76 | /** @brief Send responses to here */ |
460b9539 | 77 | ev_writer *w; |
397ef7bb | 78 | /** @brief Underlying file descriptor */ |
460b9539 | 79 | int fd; |
397ef7bb | 80 | /** @brief Unique identifier for connection used in log messages */ |
460b9539 | 81 | unsigned tag; |
397ef7bb | 82 | /** @brief Login name or NULL */ |
460b9539 | 83 | char *who; |
397ef7bb | 84 | /** @brief Event loop */ |
460b9539 | 85 | ev_source *ev; |
397ef7bb | 86 | /** @brief Nonce chosen for this connection */ |
460b9539 | 87 | unsigned char nonce[NONCE_SIZE]; |
397ef7bb RK |
88 | /** @brief Current reader callback |
89 | * | |
90 | * We change this depending on whether we're servicing the @b log command | |
91 | */ | |
460b9539 | 92 | ev_reader_callback *reader; |
397ef7bb | 93 | /** @brief Event log output sending to this connection */ |
460b9539 | 94 | struct eventlog_output *lo; |
397ef7bb | 95 | /** @brief Parent listener */ |
460b9539 | 96 | const struct listener *l; |
b12be54a RK |
97 | /** @brief Login cookie or NULL */ |
98 | char *cookie; | |
eb5dc014 RK |
99 | /** @brief Connection rights */ |
100 | rights_type rights; | |
0126692c | 101 | /** @brief Next connection */ |
102 | struct conn *next; | |
dd9af5cb RK |
103 | /** @brief True if pending rescan had 'wait' set */ |
104 | int rescan_wait; | |
ddbf05c8 RK |
105 | /** @brief Playlist that this connection locks */ |
106 | const char *locked_playlist; | |
107 | /** @brief When that playlist was locked */ | |
108 | time_t locked_when; | |
f65f5aff RK |
109 | /** @brief Line reader function */ |
110 | line_reader_type *line_reader; | |
111 | /** @brief Called when command body has been read */ | |
112 | body_callback_type *body_callback; | |
113 | /** @brief Passed to @c body_callback */ | |
114 | void *body_u; | |
115 | /** @brief Accumulating body */ | |
116 | struct vector body[1]; | |
460b9539 | 117 | }; |
118 | ||
0126692c | 119 | /** @brief Linked list of connections */ |
120 | static struct conn *connections; | |
121 | ||
460b9539 | 122 | static int reader_callback(ev_source *ev, |
123 | ev_reader *reader, | |
460b9539 | 124 | void *ptr, |
125 | size_t bytes, | |
126 | int eof, | |
127 | void *u); | |
f65f5aff RK |
128 | static int c_playlist_set_body(struct conn *c, |
129 | char **body, | |
130 | int nbody, | |
131 | void *u); | |
132 | static int fetch_body(struct conn *c, | |
133 | body_callback_type body_callback, | |
134 | void *u); | |
135 | static int body_line(struct conn *c, char *line); | |
136 | static int command(struct conn *c, char *line); | |
460b9539 | 137 | |
138 | static const char *noyes[] = { "no", "yes" }; | |
139 | ||
0126692c | 140 | /** @brief Remove a connection from the connection list */ |
141 | static void remove_connection(struct conn *c) { | |
142 | struct conn **cc; | |
143 | ||
144 | for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next) | |
145 | ; | |
146 | if(*cc) | |
147 | *cc = c->next; | |
148 | } | |
149 | ||
397ef7bb RK |
150 | /** @brief Called when a connection's writer fails or is shut down |
151 | * | |
152 | * If the connection still has a raeder that is cancelled. | |
153 | */ | |
460b9539 | 154 | static int writer_error(ev_source attribute((unused)) *ev, |
460b9539 | 155 | int errno_value, |
156 | void *u) { | |
157 | struct conn *c = u; | |
158 | ||
8d8b8c1f | 159 | D(("server writer_error S%x %d", c->tag, errno_value)); |
460b9539 | 160 | if(errno_value == 0) { |
161 | /* writer is done */ | |
8d8b8c1f | 162 | D(("S%x writer completed", c->tag)); |
460b9539 | 163 | } else { |
164 | if(errno_value != EPIPE) | |
165 | error(errno_value, "S%x write error on socket", c->tag); | |
38b8221f | 166 | if(c->r) { |
8d8b8c1f | 167 | D(("cancel reader")); |
38b8221f RK |
168 | ev_reader_cancel(c->r); |
169 | c->r = 0; | |
170 | } | |
8d8b8c1f | 171 | D(("done cancel reader")); |
460b9539 | 172 | } |
38b8221f | 173 | c->w = 0; |
75d64210 | 174 | ev_report(ev); |
0126692c | 175 | remove_connection(c); |
460b9539 | 176 | return 0; |
177 | } | |
178 | ||
397ef7bb RK |
179 | /** @brief Called when a conncetion's reader fails or is shut down |
180 | * | |
181 | * If connection still has a writer then it is closed. | |
182 | */ | |
460b9539 | 183 | static int reader_error(ev_source attribute((unused)) *ev, |
460b9539 | 184 | int errno_value, |
185 | void *u) { | |
186 | struct conn *c = u; | |
187 | ||
8d8b8c1f | 188 | D(("server reader_error S%x %d", c->tag, errno_value)); |
1563f6f6 | 189 | error(errno_value, "S%x read error on socket", c->tag); |
38b8221f RK |
190 | if(c->w) |
191 | ev_writer_close(c->w); | |
192 | c->w = 0; | |
193 | c->r = 0; | |
768d7355 | 194 | ev_report(ev); |
0126692c | 195 | remove_connection(c); |
460b9539 | 196 | return 0; |
197 | } | |
198 | ||
460b9539 | 199 | static int c_disable(struct conn *c, char **vec, int nvec) { |
200 | if(nvec == 0) | |
201 | disable_playing(c->who); | |
202 | else if(nvec == 1 && !strcmp(vec[0], "now")) | |
203 | disable_playing(c->who); | |
204 | else { | |
205 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
206 | return 1; /* completed */ | |
207 | } | |
208 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
209 | return 1; /* completed */ | |
210 | } | |
211 | ||
212 | static int c_enable(struct conn *c, | |
213 | char attribute((unused)) **vec, | |
214 | int attribute((unused)) nvec) { | |
215 | enable_playing(c->who, c->ev); | |
216 | /* Enable implicitly unpauses if there is nothing playing */ | |
217 | if(paused && !playing) resume_playing(c->who); | |
218 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
219 | return 1; /* completed */ | |
220 | } | |
221 | ||
222 | static int c_enabled(struct conn *c, | |
223 | char attribute((unused)) **vec, | |
224 | int attribute((unused)) nvec) { | |
225 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
226 | return 1; /* completed */ | |
227 | } | |
228 | ||
229 | static int c_play(struct conn *c, char **vec, | |
230 | int attribute((unused)) nvec) { | |
231 | const char *track; | |
232 | struct queue_entry *q; | |
233 | ||
234 | if(!trackdb_exists(vec[0])) { | |
235 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
236 | return 1; | |
237 | } | |
238 | if(!(track = trackdb_resolve(vec[0]))) { | |
239 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
240 | return 1; | |
241 | } | |
242 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM); | |
243 | queue_write(); | |
244 | /* If we added the first track, and something is playing, then prepare the | |
245 | * new track. If nothing is playing then we don't bother as it wouldn't gain | |
246 | * anything. */ | |
247 | if(q == qhead.next && playing) | |
248 | prepare(c->ev, q); | |
81e440ce | 249 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
460b9539 | 250 | /* If the queue was empty but we are for some reason paused then |
251 | * unpause. */ | |
252 | if(!playing) resume_playing(0); | |
253 | play(c->ev); | |
254 | return 1; /* completed */ | |
255 | } | |
256 | ||
257 | static int c_remove(struct conn *c, char **vec, | |
258 | int attribute((unused)) nvec) { | |
259 | struct queue_entry *q; | |
260 | ||
261 | if(!(q = queue_find(vec[0]))) { | |
262 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
263 | return 1; | |
264 | } | |
938d8157 | 265 | if(!right_removable(c->rights, c->who, q)) { |
834e7c4a | 266 | error(0, "%s attempted remove but lacks required rights", c->who); |
eb5dc014 | 267 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 268 | "510 Not authorized to remove that track\n"); |
eb5dc014 | 269 | return 1; |
460b9539 | 270 | } |
271 | queue_remove(q, c->who); | |
272 | /* De-prepare the track. */ | |
273 | abandon(c->ev, q); | |
49a773eb RK |
274 | /* See about adding a new random track */ |
275 | add_random_track(c->ev); | |
460b9539 | 276 | /* Prepare whatever the next head track is. */ |
277 | if(qhead.next != &qhead) | |
278 | prepare(c->ev, qhead.next); | |
279 | queue_write(); | |
280 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
281 | return 1; /* completed */ | |
282 | } | |
283 | ||
284 | static int c_scratch(struct conn *c, | |
285 | char **vec, | |
286 | int nvec) { | |
287 | if(!playing) { | |
288 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
289 | return 1; /* completed */ | |
290 | } | |
eb5dc014 RK |
291 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
292 | * playing track then you will get 550 if you weren't authorized to scratch | |
293 | * the currently playing track. */ | |
938d8157 | 294 | if(!right_scratchable(c->rights, c->who, playing)) { |
834e7c4a | 295 | error(0, "%s attempted scratch but lacks required rights", c->who); |
eb5dc014 | 296 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 297 | "510 Not authorized to scratch that track\n"); |
eb5dc014 | 298 | return 1; |
460b9539 | 299 | } |
300 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
301 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
302 | resume_playing(0); | |
303 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
304 | return 1; /* completed */ | |
305 | } | |
306 | ||
307 | static int c_pause(struct conn *c, | |
308 | char attribute((unused)) **vec, | |
309 | int attribute((unused)) nvec) { | |
310 | if(!playing) { | |
311 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
312 | return 1; /* completed */ | |
313 | } | |
314 | if(paused) { | |
315 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
316 | return 1; /* completed */ | |
317 | } | |
318 | if(pause_playing(c->who) < 0) | |
319 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
320 | else | |
321 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
322 | return 1; | |
323 | } | |
324 | ||
325 | static int c_resume(struct conn *c, | |
326 | char attribute((unused)) **vec, | |
327 | int attribute((unused)) nvec) { | |
328 | if(!paused) { | |
329 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
330 | return 1; /* completed */ | |
331 | } | |
332 | resume_playing(c->who); | |
333 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
334 | return 1; | |
335 | } | |
336 | ||
337 | static int c_shutdown(struct conn *c, | |
338 | char attribute((unused)) **vec, | |
339 | int attribute((unused)) nvec) { | |
340 | info("S%x shut down by %s", c->tag, c->who); | |
341 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); | |
342 | ev_writer_flush(c->w); | |
343 | quit(c->ev); | |
344 | } | |
345 | ||
346 | static int c_reconfigure(struct conn *c, | |
347 | char attribute((unused)) **vec, | |
348 | int attribute((unused)) nvec) { | |
349 | info("S%x reconfigure by %s", c->tag, c->who); | |
350 | if(reconfigure(c->ev, 1)) | |
351 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
352 | else | |
353 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
354 | return 1; /* completed */ | |
355 | } | |
356 | ||
dd9af5cb RK |
357 | static void finished_rescan(void *ru) { |
358 | struct conn *const c = ru; | |
359 | ||
360 | sink_writes(ev_writer_sink(c->w), "250 rescan completed\n"); | |
361 | /* Turn this connection back on */ | |
362 | ev_reader_enable(c->r); | |
363 | } | |
364 | ||
365 | static void start_fresh_rescan(void *ru) { | |
366 | struct conn *const c = ru; | |
367 | ||
368 | if(trackdb_rescan_underway()) { | |
369 | /* Some other waiter beat us to it. However in this case we're happy to | |
370 | * piggyback; the requirement is that a new rescan be started, not that it | |
371 | * was _our_ rescan. */ | |
372 | if(c->rescan_wait) { | |
373 | /* We block until the rescan completes */ | |
374 | trackdb_add_rescanned(finished_rescan, c); | |
375 | } else { | |
376 | /* We report that the new rescan has started */ | |
377 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
378 | /* Turn this connection back on */ | |
379 | ev_reader_enable(c->r); | |
380 | } | |
381 | } else { | |
382 | /* We are the first connection to get a callback so we must start a | |
383 | * rescan. */ | |
384 | if(c->rescan_wait) { | |
385 | /* We want to block until the new rescan completes */ | |
386 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
387 | } else { | |
388 | /* We can report back immediately */ | |
389 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
390 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
391 | /* Turn this connection back on */ | |
392 | ev_reader_enable(c->r); | |
393 | } | |
394 | } | |
395 | } | |
396 | ||
460b9539 | 397 | static int c_rescan(struct conn *c, |
dd9af5cb RK |
398 | char **vec, |
399 | int nvec) { | |
d867af10 | 400 | int flag_wait = 0, flag_fresh = 0, n; |
dd9af5cb RK |
401 | |
402 | /* Parse flags */ | |
403 | for(n = 0; n < nvec; ++n) { | |
404 | if(!strcmp(vec[n], "wait")) | |
d867af10 | 405 | flag_wait = 1; /* wait for rescan to complete */ |
dd9af5cb RK |
406 | #if 0 |
407 | /* Currently disabled because untested (and hard to test). */ | |
408 | else if(!strcmp(vec[n], "fresh")) | |
d867af10 | 409 | flag_fresh = 1; /* don't piggyback underway rescan */ |
dd9af5cb RK |
410 | #endif |
411 | else { | |
412 | sink_writes(ev_writer_sink(c->w), "550 unknown flag\n"); | |
413 | return 1; /* completed */ | |
414 | } | |
415 | } | |
416 | /* Report what was requested */ | |
417 | info("S%x rescan by %s (%s %s)", c->tag, c->who, | |
d867af10 RK |
418 | flag_wait ? "wait" : "", |
419 | flag_fresh ? "fresh" : ""); | |
dd9af5cb | 420 | if(trackdb_rescan_underway()) { |
d867af10 | 421 | if(flag_fresh) { |
dd9af5cb RK |
422 | /* We want a fresh rescan but there is already one underway. Arrange a |
423 | * callback when it completes and then set off a new one. */ | |
d867af10 | 424 | c->rescan_wait = flag_wait; |
dd9af5cb | 425 | trackdb_add_rescanned(start_fresh_rescan, c); |
d867af10 | 426 | if(flag_wait) |
dd9af5cb RK |
427 | return 0; |
428 | else { | |
429 | sink_writes(ev_writer_sink(c->w), "250 rescan queued\n"); | |
430 | return 1; | |
431 | } | |
432 | } else { | |
433 | /* There's a rescan underway, and it's acceptable to piggyback on it */ | |
d867af10 | 434 | if(flag_wait) { |
dd9af5cb RK |
435 | /* We want to block until completion. */ |
436 | trackdb_add_rescanned(finished_rescan, c); | |
437 | return 0; | |
438 | } else { | |
439 | /* We don't want to block. So we just report that things are in | |
440 | * hand. */ | |
441 | sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n"); | |
442 | return 1; | |
443 | } | |
444 | } | |
445 | } else { | |
446 | /* No rescan is underway. fresh is therefore irrelevant. */ | |
d867af10 | 447 | if(flag_wait) { |
dd9af5cb RK |
448 | /* We want to block until completion */ |
449 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
450 | return 0; | |
451 | } else { | |
452 | /* We don't want to block. */ | |
453 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
454 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
455 | return 1; /* completed */ | |
456 | } | |
457 | } | |
460b9539 | 458 | } |
459 | ||
460 | static int c_version(struct conn *c, | |
461 | char attribute((unused)) **vec, | |
462 | int attribute((unused)) nvec) { | |
463 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 464 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 465 | return 1; /* completed */ |
466 | } | |
467 | ||
468 | static int c_playing(struct conn *c, | |
469 | char attribute((unused)) **vec, | |
470 | int attribute((unused)) nvec) { | |
471 | if(playing) { | |
472 | queue_fix_sofar(playing); | |
473 | playing->expected = 0; | |
474 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
475 | } else | |
476 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
477 | return 1; /* completed */ | |
478 | } | |
479 | ||
b12be54a | 480 | static const char *connection_host(struct conn *c) { |
460b9539 | 481 | union { |
482 | struct sockaddr sa; | |
483 | struct sockaddr_in in; | |
484 | struct sockaddr_in6 in6; | |
485 | } u; | |
486 | socklen_t l; | |
b12be54a | 487 | int n; |
460b9539 | 488 | char host[1024]; |
489 | ||
460b9539 | 490 | /* get connection data */ |
491 | l = sizeof u; | |
492 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
493 | error(errno, "S%x error calling getpeername", c->tag); | |
b12be54a | 494 | return 0; |
460b9539 | 495 | } |
496 | if(c->l->pf != PF_UNIX) { | |
497 | if((n = getnameinfo(&u.sa, l, | |
498 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
499 | error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n)); | |
b12be54a | 500 | return 0; |
460b9539 | 501 | } |
b12be54a | 502 | return xstrdup(host); |
18e6d6e6 | 503 | } else |
b12be54a RK |
504 | return "local"; |
505 | } | |
506 | ||
507 | static int c_user(struct conn *c, | |
508 | char **vec, | |
509 | int attribute((unused)) nvec) { | |
eb5dc014 | 510 | struct kvp *k; |
f0feb22e | 511 | const char *res, *host, *password; |
eb5dc014 | 512 | rights_type rights; |
b12be54a RK |
513 | |
514 | if(c->who) { | |
515 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
516 | return 1; | |
517 | } | |
518 | /* get connection data */ | |
519 | if(!(host = connection_host(c))) { | |
520 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
521 | return 1; | |
522 | } | |
460b9539 | 523 | /* find the user */ |
eb5dc014 | 524 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 525 | /* reject nonexistent users */ |
eb5dc014 RK |
526 | if(!k) { |
527 | error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); | |
528 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
529 | return 1; | |
530 | } | |
531 | /* reject unconfirmed users */ | |
532 | if(kvp_get(k, "confirmation")) { | |
533 | error(0, "S%x unconfirmed user '%s' from %s", c->tag, vec[0], host); | |
534 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
535 | return 1; | |
536 | } | |
537 | password = kvp_get(k, "password"); | |
538 | if(!password) password = ""; | |
0f55e905 | 539 | if(parse_rights(kvp_get(k, "rights"), &rights, 1)) { |
eb5dc014 | 540 | error(0, "error parsing rights for %s", vec[0]); |
18e6d6e6 | 541 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
542 | return 1; | |
543 | } | |
f0feb22e RK |
544 | /* check whether the response is right */ |
545 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 546 | config->authorization_algorithm); |
18e6d6e6 | 547 | if(wideopen || (res && !strcmp(res, vec[1]))) { |
548 | c->who = vec[0]; | |
eb5dc014 | 549 | c->rights = rights; |
18e6d6e6 | 550 | /* currently we only bother logging remote connections */ |
30365519 | 551 | if(strcmp(host, "local")) |
18e6d6e6 | 552 | info("S%x %s connected from %s", c->tag, vec[0], host); |
30365519 | 553 | else |
eb5dc014 | 554 | c->rights |= RIGHT__LOCAL; |
18e6d6e6 | 555 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
556 | return 1; | |
460b9539 | 557 | } |
558 | /* oops, response was wrong */ | |
18e6d6e6 | 559 | info("S%x authentication failure for %s from %s", c->tag, vec[0], host); |
460b9539 | 560 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
561 | return 1; | |
562 | } | |
563 | ||
564 | static int c_recent(struct conn *c, | |
565 | char attribute((unused)) **vec, | |
566 | int attribute((unused)) nvec) { | |
567 | const struct queue_entry *q; | |
568 | ||
569 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
570 | for(q = phead.next; q != &phead; q = q->next) | |
571 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
572 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
573 | return 1; /* completed */ | |
574 | } | |
575 | ||
576 | static int c_queue(struct conn *c, | |
577 | char attribute((unused)) **vec, | |
578 | int attribute((unused)) nvec) { | |
579 | struct queue_entry *q; | |
580 | time_t when = 0; | |
581 | const char *l; | |
582 | long length; | |
583 | ||
584 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
585 | if(playing_is_enabled() && !paused) { | |
586 | if(playing) { | |
587 | queue_fix_sofar(playing); | |
588 | if((l = trackdb_get(playing->track, "_length")) | |
589 | && (length = atol(l))) { | |
590 | time(&when); | |
591 | when += length - playing->sofar + config->gap; | |
592 | } | |
593 | } else | |
594 | /* Nothing is playing but playing is enabled, so whatever is | |
595 | * first in the queue can be expected to start immediately. */ | |
596 | time(&when); | |
597 | } | |
598 | for(q = qhead.next; q != &qhead; q = q->next) { | |
599 | /* fill in estimated start time */ | |
600 | q->expected = when; | |
601 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
602 | /* update for next track */ | |
603 | if(when) { | |
604 | if((l = trackdb_get(q->track, "_length")) | |
605 | && (length = atol(l))) | |
606 | when += length + config->gap; | |
607 | else | |
608 | when = 0; | |
609 | } | |
610 | } | |
611 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
612 | return 1; /* completed */ | |
613 | } | |
614 | ||
615 | static int output_list(struct conn *c, char **vec) { | |
616 | while(*vec) | |
617 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
618 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
619 | return 1; | |
620 | } | |
621 | ||
622 | static int files_dirs(struct conn *c, | |
623 | char **vec, | |
624 | int nvec, | |
625 | enum trackdb_listable what) { | |
626 | const char *dir, *re, *errstr; | |
627 | int erroffset; | |
628 | pcre *rec; | |
629 | char **fvec, *key; | |
630 | ||
631 | switch(nvec) { | |
632 | case 0: dir = 0; re = 0; break; | |
633 | case 1: dir = vec[0]; re = 0; break; | |
634 | case 2: dir = vec[0]; re = vec[1]; break; | |
635 | default: abort(); | |
636 | } | |
637 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
638 | if(dir && strchr(dir, '\n')) { | |
639 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
640 | return 1; | |
641 | } | |
642 | if(re && strchr(re, '\n')) { | |
643 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
644 | return 1; | |
645 | } | |
646 | /* We bother eliminating "" because the web interface is relatively | |
647 | * likely to send it */ | |
648 | if(re && *re) { | |
649 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
650 | fvec = (char **)cache_get(&cache_files_type, key); | |
651 | if(fvec) { | |
652 | /* Got a cache hit, don't store the answer in the cache */ | |
653 | key = 0; | |
654 | ++cache_files_hits; | |
655 | rec = 0; /* quieten compiler */ | |
656 | } else { | |
657 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
658 | * in the cache. */ | |
659 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
660 | &errstr, &erroffset, 0))) { | |
661 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
662 | errstr); | |
663 | return 1; | |
664 | } | |
665 | /* It only counts as a miss if the regexp was valid. */ | |
666 | ++cache_files_misses; | |
667 | } | |
668 | } else { | |
669 | /* No regexp, don't bother caching the result */ | |
670 | rec = 0; | |
671 | key = 0; | |
672 | fvec = 0; | |
673 | } | |
674 | if(!fvec) { | |
675 | /* No cache hit (either because a miss, or because we did not look) so do | |
676 | * the lookup */ | |
677 | if(dir && *dir) | |
678 | fvec = trackdb_list(dir, 0, what, rec); | |
679 | else | |
680 | fvec = trackdb_list(0, 0, what, rec); | |
681 | } | |
682 | if(key) | |
683 | /* Put the answer in the cache */ | |
684 | cache_put(&cache_files_type, key, fvec); | |
685 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
686 | return output_list(c, fvec); | |
687 | } | |
688 | ||
689 | static int c_files(struct conn *c, | |
690 | char **vec, | |
691 | int nvec) { | |
692 | return files_dirs(c, vec, nvec, trackdb_files); | |
693 | } | |
694 | ||
695 | static int c_dirs(struct conn *c, | |
696 | char **vec, | |
697 | int nvec) { | |
698 | return files_dirs(c, vec, nvec, trackdb_directories); | |
699 | } | |
700 | ||
701 | static int c_allfiles(struct conn *c, | |
702 | char **vec, | |
703 | int nvec) { | |
704 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
705 | } | |
706 | ||
707 | static int c_get(struct conn *c, | |
708 | char **vec, | |
709 | int attribute((unused)) nvec) { | |
27ed5a69 | 710 | const char *v, *track; |
460b9539 | 711 | |
27ed5a69 RK |
712 | if(!(track = trackdb_resolve(vec[0]))) { |
713 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
714 | return 1; | |
715 | } | |
716 | if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1]))) | |
7b32e917 | 717 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 718 | else |
fb1bc1f5 | 719 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 720 | return 1; |
721 | } | |
722 | ||
723 | static int c_length(struct conn *c, | |
724 | char **vec, | |
725 | int attribute((unused)) nvec) { | |
726 | const char *track, *v; | |
727 | ||
728 | if(!(track = trackdb_resolve(vec[0]))) { | |
729 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
730 | return 1; | |
731 | } | |
732 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 733 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 734 | else |
735 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
736 | return 1; | |
737 | } | |
738 | ||
739 | static int c_set(struct conn *c, | |
740 | char **vec, | |
741 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
742 | const char *track; |
743 | ||
744 | if(!(track = trackdb_resolve(vec[0]))) { | |
745 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
746 | return 1; | |
747 | } | |
748 | if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2])) | |
460b9539 | 749 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
750 | else | |
751 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
752 | return 1; | |
753 | } | |
754 | ||
755 | static int c_prefs(struct conn *c, | |
756 | char **vec, | |
757 | int attribute((unused)) nvec) { | |
758 | struct kvp *k; | |
27ed5a69 | 759 | const char *track; |
460b9539 | 760 | |
27ed5a69 RK |
761 | if(!(track = trackdb_resolve(vec[0]))) { |
762 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
763 | return 1; | |
764 | } | |
765 | k = trackdb_get_all(track); | |
460b9539 | 766 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); |
767 | for(; k; k = k->next) | |
768 | if(k->name[0] != '_') /* omit internal values */ | |
769 | sink_printf(ev_writer_sink(c->w), | |
770 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
771 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
772 | return 1; | |
773 | } | |
774 | ||
775 | static int c_exists(struct conn *c, | |
776 | char **vec, | |
777 | int attribute((unused)) nvec) { | |
27ed5a69 | 778 | /* trackdb_exists() does its own alias checking */ |
460b9539 | 779 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); |
780 | return 1; | |
781 | } | |
782 | ||
783 | static void search_parse_error(const char *msg, void *u) { | |
784 | *(const char **)u = msg; | |
785 | } | |
786 | ||
787 | static int c_search(struct conn *c, | |
788 | char **vec, | |
789 | int attribute((unused)) nvec) { | |
790 | char **terms, **results; | |
791 | int nterms, nresults, n; | |
792 | const char *e = "unknown error"; | |
793 | ||
794 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
795 | * interface a bit more convenient to add searching to, but it has the more | |
796 | * compelling advantage that if everything uses it, then interpretation of | |
797 | * user-supplied search strings will be the same everywhere. */ | |
798 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
799 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
800 | } else { | |
801 | results = trackdb_search(terms, nterms, &nresults); | |
802 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
803 | for(n = 0; n < nresults; ++n) | |
804 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
805 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
806 | } | |
807 | return 1; | |
808 | } | |
809 | ||
810 | static int c_random_enable(struct conn *c, | |
811 | char attribute((unused)) **vec, | |
812 | int attribute((unused)) nvec) { | |
813 | enable_random(c->who, c->ev); | |
814 | /* Enable implicitly unpauses if there is nothing playing */ | |
815 | if(paused && !playing) resume_playing(c->who); | |
816 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
817 | return 1; /* completed */ | |
818 | } | |
819 | ||
820 | static int c_random_disable(struct conn *c, | |
821 | char attribute((unused)) **vec, | |
822 | int attribute((unused)) nvec) { | |
823 | disable_random(c->who); | |
824 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
825 | return 1; /* completed */ | |
826 | } | |
827 | ||
828 | static int c_random_enabled(struct conn *c, | |
829 | char attribute((unused)) **vec, | |
830 | int attribute((unused)) nvec) { | |
831 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
832 | return 1; /* completed */ | |
833 | } | |
834 | ||
d6dde5a3 RK |
835 | static void got_stats(char *stats, void *u) { |
836 | struct conn *const c = u; | |
837 | ||
838 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
839 | /* Now we can start processing commands again */ | |
840 | ev_reader_enable(c->r); | |
841 | } | |
842 | ||
460b9539 | 843 | static int c_stats(struct conn *c, |
844 | char attribute((unused)) **vec, | |
845 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
846 | trackdb_stats_subprocess(c->ev, got_stats, c); |
847 | return 0; /* not yet complete */ | |
460b9539 | 848 | } |
849 | ||
850 | static int c_volume(struct conn *c, | |
851 | char **vec, | |
852 | int nvec) { | |
853 | int l, r, set; | |
854 | char lb[32], rb[32]; | |
eb5dc014 | 855 | rights_type rights; |
460b9539 | 856 | |
857 | switch(nvec) { | |
858 | case 0: | |
859 | set = 0; | |
860 | break; | |
861 | case 1: | |
862 | l = r = atoi(vec[0]); | |
863 | set = 1; | |
864 | break; | |
865 | case 2: | |
866 | l = atoi(vec[0]); | |
867 | r = atoi(vec[1]); | |
868 | set = 1; | |
869 | break; | |
870 | default: | |
871 | abort(); | |
872 | } | |
eb5dc014 RK |
873 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
874 | if(!(c->rights & rights)) { | |
834e7c4a | 875 | error(0, "%s attempted to set volume but lacks required rights", c->who); |
b4a80f69 | 876 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
eb5dc014 RK |
877 | return 1; |
878 | } | |
3c499fe7 | 879 | if(mixer_control(-1/*as configured*/, &l, &r, set)) |
460b9539 | 880 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); |
881 | else { | |
882 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); | |
883 | if(l != volume_left || r != volume_right) { | |
884 | volume_left = l; | |
885 | volume_right = r; | |
886 | snprintf(lb, sizeof lb, "%d", l); | |
887 | snprintf(rb, sizeof rb, "%d", r); | |
888 | eventlog("volume", lb, rb, (char *)0); | |
889 | } | |
890 | } | |
891 | return 1; | |
892 | } | |
893 | ||
397ef7bb RK |
894 | /** @brief Called when data arrives on a log connection |
895 | * | |
896 | * We just discard all such data. The client may occasionally send data as a | |
897 | * keepalive. | |
898 | */ | |
899 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 900 | ev_reader *reader, |
397ef7bb | 901 | void attribute((unused)) *ptr, |
460b9539 | 902 | size_t bytes, |
397ef7bb RK |
903 | int attribute((unused)) eof, |
904 | void attribute((unused)) *u) { | |
460b9539 | 905 | struct conn *c = u; |
906 | ||
397ef7bb RK |
907 | ev_reader_consume(reader, bytes); |
908 | if(eof) { | |
909 | /* Oops, that's all for now */ | |
8d8b8c1f | 910 | D(("logging reader eof")); |
397ef7bb | 911 | if(c->w) { |
8d8b8c1f | 912 | D(("close writer")); |
397ef7bb RK |
913 | ev_writer_close(c->w); |
914 | c->w = 0; | |
915 | } | |
916 | c->r = 0; | |
0126692c | 917 | remove_connection(c); |
f6033c46 | 918 | } |
397ef7bb | 919 | return 0; |
460b9539 | 920 | } |
921 | ||
922 | static void logclient(const char *msg, void *user) { | |
923 | struct conn *c = user; | |
924 | ||
f6033c46 RK |
925 | if(!c->w || !c->r) { |
926 | /* This connection has gone up in smoke for some reason */ | |
927 | eventlog_remove(c->lo); | |
ad492e00 | 928 | c->lo = 0; |
f6033c46 RK |
929 | return; |
930 | } | |
75e7b7c3 RK |
931 | /* user_* messages are restricted */ |
932 | if(!strncmp(msg, "user_", 5)) { | |
58d2aad2 RK |
933 | /* They are only sent to admin users */ |
934 | if(!(c->rights & RIGHT_ADMIN)) | |
935 | return; | |
936 | /* They are not sent over TCP connections unless remote user-management is | |
937 | * enabled */ | |
938 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) | |
939 | return; | |
940 | } | |
460b9539 | 941 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
942 | (uintmax_t)time(0), msg); | |
943 | } | |
944 | ||
945 | static int c_log(struct conn *c, | |
946 | char attribute((unused)) **vec, | |
947 | int attribute((unused)) nvec) { | |
948 | time_t now; | |
949 | ||
950 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
951 | /* pump out initial state */ | |
952 | time(&now); | |
953 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
954 | (uintmax_t)now, | |
955 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
956 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
957 | (uintmax_t)now, | |
958 | random_is_enabled() ? "enable_random" : "disable_random"); | |
959 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
960 | (uintmax_t)now, | |
961 | paused ? "pause" : "resume"); | |
5abe307a RK |
962 | if(playing) |
963 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
964 | (uintmax_t)now); | |
df44d69b RK |
965 | /* Initial volume */ |
966 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
967 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 968 | c->lo = xmalloc(sizeof *c->lo); |
969 | c->lo->fn = logclient; | |
970 | c->lo->user = c; | |
971 | eventlog_add(c->lo); | |
972 | c->reader = logging_reader_callback; | |
973 | return 0; | |
974 | } | |
975 | ||
eb5dc014 RK |
976 | /** @brief Test whether a move is allowed |
977 | * @param c Connection | |
978 | * @param qs List of IDs on queue | |
979 | * @param nqs Number of IDs | |
980 | * @return 0 if move is prohibited, non-0 if it is allowed | |
981 | */ | |
982 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
eb5dc014 RK |
983 | for(; nqs > 0; ++qs, --nqs) { |
984 | struct queue_entry *const q = *qs; | |
985 | ||
938d8157 | 986 | if(!right_movable(c->rights, c->who, q)) |
987 | return 0; | |
eb5dc014 | 988 | } |
938d8157 | 989 | return 1; |
eb5dc014 RK |
990 | } |
991 | ||
460b9539 | 992 | static int c_move(struct conn *c, |
993 | char **vec, | |
994 | int attribute((unused)) nvec) { | |
995 | struct queue_entry *q; | |
996 | int n; | |
997 | ||
460b9539 | 998 | if(!(q = queue_find(vec[0]))) { |
999 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1000 | return 1; | |
1001 | } | |
eb5dc014 | 1002 | if(!has_move_rights(c, &q, 1)) { |
834e7c4a | 1003 | error(0, "%s attempted move but lacks required rights", c->who); |
eb5dc014 | 1004 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1005 | "510 Not authorized to move that track\n"); |
eb5dc014 RK |
1006 | return 1; |
1007 | } | |
460b9539 | 1008 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 1009 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
1010 | /* If we've moved to the head of the queue then prepare the track. */ | |
1011 | if(q == qhead.next) | |
1012 | prepare(c->ev, q); | |
1013 | return 1; | |
1014 | } | |
1015 | ||
1016 | static int c_moveafter(struct conn *c, | |
1017 | char **vec, | |
1018 | int attribute((unused)) nvec) { | |
1019 | struct queue_entry *q, **qs; | |
1020 | int n; | |
1021 | ||
460b9539 | 1022 | if(vec[0][0]) { |
1023 | if(!(q = queue_find(vec[0]))) { | |
1024 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1025 | return 1; | |
1026 | } | |
1027 | } else | |
1028 | q = 0; | |
1029 | ++vec; | |
1030 | --nvec; | |
1031 | qs = xcalloc(nvec, sizeof *qs); | |
1032 | for(n = 0; n < nvec; ++n) | |
1033 | if(!(qs[n] = queue_find(vec[n]))) { | |
1034 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1035 | return 1; | |
1036 | } | |
eb5dc014 | 1037 | if(!has_move_rights(c, qs, nvec)) { |
834e7c4a | 1038 | error(0, "%s attempted moveafter but lacks required rights", c->who); |
eb5dc014 | 1039 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1040 | "510 Not authorized to move those tracks\n"); |
eb5dc014 RK |
1041 | return 1; |
1042 | } | |
460b9539 | 1043 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 1044 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
1045 | /* If we've moved to the head of the queue then prepare the track. */ | |
1046 | if(q == qhead.next) | |
1047 | prepare(c->ev, q); | |
1048 | return 1; | |
1049 | } | |
1050 | ||
1051 | static int c_part(struct conn *c, | |
1052 | char **vec, | |
1053 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
1054 | const char *track; |
1055 | ||
1056 | if(!(track = trackdb_resolve(vec[0]))) { | |
1057 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1058 | return 1; | |
1059 | } | |
460b9539 | 1060 | sink_printf(ev_writer_sink(c->w), "252 %s\n", |
27ed5a69 | 1061 | quoteutf8(trackdb_getpart(track, vec[1], vec[2]))); |
460b9539 | 1062 | return 1; |
1063 | } | |
1064 | ||
1065 | static int c_resolve(struct conn *c, | |
1066 | char **vec, | |
1067 | int attribute((unused)) nvec) { | |
1068 | const char *track; | |
1069 | ||
1070 | if(!(track = trackdb_resolve(vec[0]))) { | |
1071 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1072 | return 1; | |
1073 | } | |
7b32e917 | 1074 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 1075 | return 1; |
1076 | } | |
1077 | ||
ddbf05c8 RK |
1078 | static int list_response(struct conn *c, |
1079 | const char *reply, | |
1080 | char **list) { | |
1081 | sink_printf(ev_writer_sink(c->w), "253 %s\n", reply); | |
1082 | while(*list) { | |
460b9539 | 1083 | sink_printf(ev_writer_sink(c->w), "%s%s\n", |
ddbf05c8 RK |
1084 | **list == '.' ? "." : "", *list); |
1085 | ++list; | |
460b9539 | 1086 | } |
1087 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1088 | return 1; /* completed */ | |
460b9539 | 1089 | } |
1090 | ||
ddbf05c8 RK |
1091 | static int c_tags(struct conn *c, |
1092 | char attribute((unused)) **vec, | |
1093 | int attribute((unused)) nvec) { | |
1094 | return list_response(c, "Tag list follows", trackdb_alltags()); | |
1095 | } | |
1096 | ||
460b9539 | 1097 | static int c_set_global(struct conn *c, |
1098 | char **vec, | |
1099 | int attribute((unused)) nvec) { | |
f9635e06 RK |
1100 | if(vec[0][0] == '_') { |
1101 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
1102 | return 1; | |
1103 | } | |
460b9539 | 1104 | trackdb_set_global(vec[0], vec[1], c->who); |
1105 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1106 | return 1; | |
1107 | } | |
1108 | ||
1109 | static int c_get_global(struct conn *c, | |
1110 | char **vec, | |
1111 | int attribute((unused)) nvec) { | |
1112 | const char *s = trackdb_get_global(vec[0]); | |
1113 | ||
1114 | if(s) | |
7b32e917 | 1115 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 1116 | else |
fb1bc1f5 | 1117 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 1118 | return 1; |
1119 | } | |
1120 | ||
7858930d | 1121 | static int c_nop(struct conn *c, |
1122 | char attribute((unused)) **vec, | |
1123 | int attribute((unused)) nvec) { | |
1124 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
1125 | return 1; | |
1126 | } | |
1127 | ||
2a10b70b RK |
1128 | static int c_new(struct conn *c, |
1129 | char **vec, | |
1130 | int nvec) { | |
d742bb47 RK |
1131 | int max, n; |
1132 | char **tracks; | |
2a10b70b | 1133 | |
d742bb47 RK |
1134 | if(nvec > 0) |
1135 | max = atoi(vec[0]); | |
1136 | else | |
1137 | max = INT_MAX; | |
1138 | if(max <= 0 || max > config->new_max) | |
1139 | max = config->new_max; | |
1140 | tracks = trackdb_new(0, max); | |
2a10b70b | 1141 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); |
d742bb47 | 1142 | n = 0; |
2a10b70b RK |
1143 | while(*tracks) { |
1144 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1145 | **tracks == '.' ? "." : "", *tracks); | |
1146 | ++tracks; | |
1147 | } | |
1148 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1149 | return 1; /* completed */ | |
1150 | ||
1151 | } | |
1152 | ||
ca831831 RK |
1153 | static int c_rtp_address(struct conn *c, |
1154 | char attribute((unused)) **vec, | |
1155 | int attribute((unused)) nvec) { | |
bd8895a8 | 1156 | if(config->api == BACKEND_NETWORK) { |
ca831831 RK |
1157 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", |
1158 | quoteutf8(config->broadcast.s[0]), | |
1159 | quoteutf8(config->broadcast.s[1])); | |
1160 | } else | |
1161 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1162 | return 1; | |
1163 | } | |
b12be54a RK |
1164 | |
1165 | static int c_cookie(struct conn *c, | |
1166 | char **vec, | |
1167 | int attribute((unused)) nvec) { | |
1168 | const char *host; | |
1169 | char *user; | |
eb5dc014 | 1170 | rights_type rights; |
b12be54a RK |
1171 | |
1172 | /* Can't log in twice on the same connection */ | |
1173 | if(c->who) { | |
1174 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1175 | return 1; | |
1176 | } | |
1177 | /* Get some kind of peer identifcation */ | |
1178 | if(!(host = connection_host(c))) { | |
1179 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1180 | return 1; | |
1181 | } | |
1182 | /* Check the cookie */ | |
eb5dc014 | 1183 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1184 | if(!user) { |
1185 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1186 | return 1; | |
1187 | } | |
1188 | /* Log in */ | |
e48c28bb | 1189 | c->who = user; |
b12be54a | 1190 | c->cookie = vec[0]; |
eb5dc014 | 1191 | c->rights = rights; |
30365519 | 1192 | if(strcmp(host, "local")) |
b12be54a | 1193 | info("S%x %s connected with cookie from %s", c->tag, user, host); |
30365519 | 1194 | else |
eb5dc014 | 1195 | c->rights |= RIGHT__LOCAL; |
0227f67d RK |
1196 | /* Response contains username so client knows who they are acting as */ |
1197 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
b12be54a RK |
1198 | return 1; |
1199 | } | |
1200 | ||
1201 | static int c_make_cookie(struct conn *c, | |
1202 | char attribute((unused)) **vec, | |
1203 | int attribute((unused)) nvec) { | |
1204 | const char *cookie = make_cookie(c->who); | |
1205 | ||
1206 | if(cookie) | |
eb5dc014 | 1207 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1208 | else |
1209 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1210 | return 1; | |
1211 | } | |
1212 | ||
1213 | static int c_revoke(struct conn *c, | |
1214 | char attribute((unused)) **vec, | |
1215 | int attribute((unused)) nvec) { | |
1216 | if(c->cookie) { | |
1217 | revoke_cookie(c->cookie); | |
1218 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1219 | } else | |
1220 | sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n"); | |
1221 | return 1; | |
1222 | } | |
1223 | ||
f0feb22e RK |
1224 | static int c_adduser(struct conn *c, |
1225 | char **vec, | |
0f55e905 RK |
1226 | int nvec) { |
1227 | const char *rights; | |
1228 | ||
810b8083 | 1229 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1230 | error(0, "S%x: remote adduser", c->tag); |
810b8083 RK |
1231 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1232 | return 1; | |
1233 | } | |
0f55e905 RK |
1234 | if(nvec > 2) { |
1235 | rights = vec[2]; | |
1236 | if(parse_rights(vec[2], 0, 1)) { | |
1237 | sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n"); | |
1238 | return -1; | |
1239 | } | |
1240 | } else | |
1241 | rights = config->default_rights; | |
1242 | if(trackdb_adduser(vec[0], vec[1], rights, | |
ba39faf6 | 1243 | 0/*email*/, 0/*confirmation*/)) |
f0feb22e RK |
1244 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1245 | else | |
1246 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1247 | return 1; | |
1248 | } | |
1249 | ||
1250 | static int c_deluser(struct conn *c, | |
1251 | char **vec, | |
1252 | int attribute((unused)) nvec) { | |
0126692c | 1253 | struct conn *d; |
1254 | ||
810b8083 | 1255 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1256 | error(0, "S%x: remote deluser", c->tag); |
810b8083 RK |
1257 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1258 | return 1; | |
1259 | } | |
0126692c | 1260 | if(trackdb_deluser(vec[0])) { |
ba39faf6 | 1261 | sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n"); |
0126692c | 1262 | return 1; |
1263 | } | |
1264 | /* Zap connections belonging to deleted user */ | |
1265 | for(d = connections; d; d = d->next) | |
1266 | if(!strcmp(d->who, vec[0])) | |
1267 | d->rights = 0; | |
1268 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
f0feb22e RK |
1269 | return 1; |
1270 | } | |
1271 | ||
1272 | static int c_edituser(struct conn *c, | |
5df73aeb | 1273 | char **vec, |
f0feb22e | 1274 | int attribute((unused)) nvec) { |
0126692c | 1275 | struct conn *d; |
1276 | ||
810b8083 | 1277 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1278 | error(0, "S%x: remote edituser", c->tag); |
810b8083 RK |
1279 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1280 | return 1; | |
1281 | } | |
eb5dc014 RK |
1282 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1283 | * address and password. */ | |
1284 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1285 | || (!strcmp(c->who, vec[0]) |
1286 | && (!strcmp(vec[1], "email") | |
1287 | || !strcmp(vec[1], "password")))) { | |
0126692c | 1288 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) { |
5df73aeb | 1289 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); |
0126692c | 1290 | return 1; |
1291 | } | |
1292 | if(!strcmp(vec[1], "password")) { | |
1293 | /* Zap all connections for this user after a password change */ | |
1294 | for(d = connections; d; d = d->next) | |
1295 | if(!strcmp(d->who, vec[0])) | |
1296 | d->rights = 0; | |
1297 | } else if(!strcmp(vec[1], "rights")) { | |
1298 | /* Update rights for this user */ | |
1299 | rights_type r; | |
1300 | ||
ad492e00 RK |
1301 | if(!parse_rights(vec[2], &r, 1)) { |
1302 | const char *new_rights = rights_string(r); | |
1303 | for(d = connections; d; d = d->next) { | |
1304 | if(!strcmp(d->who, vec[0])) { | |
1305 | /* Update rights */ | |
0126692c | 1306 | d->rights = r; |
ad492e00 RK |
1307 | /* Notify any log connections */ |
1308 | if(d->lo) | |
1309 | sink_printf(ev_writer_sink(d->w), | |
75e7b7c3 | 1310 | "%"PRIxMAX" rights_changed %s\n", |
ad492e00 | 1311 | (uintmax_t)time(0), |
75e7b7c3 | 1312 | quoteutf8(new_rights)); |
ad492e00 RK |
1313 | } |
1314 | } | |
1315 | } | |
0126692c | 1316 | } |
1317 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
834e7c4a | 1318 | } else { |
1319 | error(0, "%s attempted edituser but lacks required rights", c->who); | |
b4a80f69 | 1320 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1321 | } |
f0feb22e RK |
1322 | return 1; |
1323 | } | |
1324 | ||
1325 | static int c_userinfo(struct conn *c, | |
1326 | char attribute((unused)) **vec, | |
1327 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1328 | struct kvp *k; |
1329 | const char *value; | |
eb5dc014 | 1330 | |
39e7dcfb RK |
1331 | /* We allow remote querying of rights so that clients can figure out what |
1332 | * they're allowed to do */ | |
1333 | if(!config->remote_userman | |
1334 | && !(c->rights & RIGHT__LOCAL) | |
1335 | && strcmp(vec[1], "rights")) { | |
1336 | error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]); | |
810b8083 RK |
1337 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1338 | return 1; | |
1339 | } | |
eb5dc014 | 1340 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email |
29f5fbd2 | 1341 | * address and rights list. */ |
eb5dc014 | 1342 | if((c->rights & RIGHT_ADMIN) |
5df73aeb RK |
1343 | || (!strcmp(c->who, vec[0]) |
1344 | && (!strcmp(vec[1], "email") | |
1345 | || !strcmp(vec[1], "rights")))) { | |
1346 | if((k = trackdb_getuserinfo(vec[0]))) | |
1347 | if((value = kvp_get(k, vec[1]))) | |
1348 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1349 | else | |
1350 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1351 | else | |
1352 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
834e7c4a | 1353 | } else { |
1354 | error(0, "%s attempted userinfo but lacks required rights", c->who); | |
b4a80f69 | 1355 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1356 | } |
f0feb22e RK |
1357 | return 1; |
1358 | } | |
1359 | ||
c3be4f19 RK |
1360 | static int c_users(struct conn *c, |
1361 | char attribute((unused)) **vec, | |
1362 | int attribute((unused)) nvec) { | |
ddbf05c8 | 1363 | return list_response(c, "User list follows", trackdb_listusers()); |
c3be4f19 RK |
1364 | } |
1365 | ||
86e3aea7 | 1366 | /** @brief Base64 mapping table for confirmation strings |
1367 | * | |
1368 | * This is used with generic_to_base64() and generic_base64(). We cannot use | |
1369 | * the MIME table as that contains '+' and '=' which get quoted when | |
1370 | * URL-encoding. (The CGI still does the URL encoding but it is desirable to | |
1371 | * avoid it being necessary.) | |
1372 | */ | |
1373 | static const char confirm_base64_table[] = | |
1374 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*"; | |
1375 | ||
ba39faf6 RK |
1376 | static int c_register(struct conn *c, |
1377 | char **vec, | |
1378 | int attribute((unused)) nvec) { | |
1379 | char *buf, *cs; | |
1380 | size_t bufsize; | |
1381 | int offset; | |
1382 | ||
1383 | /* The confirmation string is base64(username;nonce) */ | |
10114017 | 1384 | bufsize = strlen(vec[0]) + CONFIRM_SIZE + 2; |
ba39faf6 RK |
1385 | buf = xmalloc_noptr(bufsize); |
1386 | offset = byte_snprintf(buf, bufsize, "%s;", vec[0]); | |
10114017 | 1387 | gcry_randomize(buf + offset, CONFIRM_SIZE, GCRY_STRONG_RANDOM); |
86e3aea7 | 1388 | cs = generic_to_base64((uint8_t *)buf, offset + CONFIRM_SIZE, |
1389 | confirm_base64_table); | |
ba39faf6 RK |
1390 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs)) |
1391 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); | |
1392 | else | |
1393 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs)); | |
1394 | return 1; | |
1395 | } | |
1396 | ||
1397 | static int c_confirm(struct conn *c, | |
1398 | char **vec, | |
1399 | int attribute((unused)) nvec) { | |
1400 | size_t nuser; | |
1401 | char *user, *sep; | |
30365519 | 1402 | rights_type rights; |
1403 | const char *host; | |
ba39faf6 | 1404 | |
30365519 | 1405 | /* Get some kind of peer identifcation */ |
1406 | if(!(host = connection_host(c))) { | |
1407 | sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n"); | |
1408 | return 1; | |
1409 | } | |
86e3aea7 | 1410 | if(!(user = generic_base64(vec[0], &nuser, confirm_base64_table)) |
ba39faf6 RK |
1411 | || !(sep = memchr(user, ';', nuser))) { |
1412 | sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n"); | |
1413 | return 1; | |
1414 | } | |
1415 | *sep = 0; | |
30365519 | 1416 | if(trackdb_confirm(user, vec[0], &rights)) |
ba39faf6 | 1417 | sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n"); |
30365519 | 1418 | else { |
1419 | c->who = user; | |
1420 | c->cookie = 0; | |
1421 | c->rights = rights; | |
1422 | if(strcmp(host, "local")) | |
1423 | info("S%x %s confirmed from %s", c->tag, user, host); | |
1424 | else | |
1425 | c->rights |= RIGHT__LOCAL; | |
1426 | /* Response contains username so client knows who they are acting as */ | |
1427 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
1428 | } | |
ba39faf6 RK |
1429 | return 1; |
1430 | } | |
6207d2f3 | 1431 | |
1432 | static int sent_reminder(ev_source attribute((unused)) *ev, | |
1433 | pid_t attribute((unused)) pid, | |
1434 | int status, | |
1435 | const struct rusage attribute((unused)) *rusage, | |
1436 | void *u) { | |
1437 | struct conn *const c = u; | |
1438 | ||
1439 | /* Tell the client what went down */ | |
1440 | if(!status) { | |
1441 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1442 | } else { | |
1443 | error(0, "reminder subprocess %s", wstat(status)); | |
1444 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1445 | } | |
1446 | /* Re-enable this connection */ | |
1447 | ev_reader_enable(c->r); | |
1448 | return 0; | |
1449 | } | |
1450 | ||
1451 | static int c_reminder(struct conn *c, | |
1452 | char **vec, | |
1453 | int attribute((unused)) nvec) { | |
1454 | struct kvp *k; | |
1455 | const char *password, *email, *text, *encoding, *charset, *content_type; | |
1456 | const time_t *last; | |
1457 | time_t now; | |
1458 | pid_t pid; | |
1459 | ||
1460 | static hash *last_reminder; | |
1461 | ||
1462 | if(!config->mail_sender) { | |
1463 | error(0, "cannot send password reminders because mail_sender not set"); | |
1464 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1465 | return 1; | |
1466 | } | |
1467 | if(!(k = trackdb_getuserinfo(vec[0]))) { | |
1468 | error(0, "reminder for user '%s' who does not exist", vec[0]); | |
1469 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1470 | return 1; | |
1471 | } | |
1472 | if(!(email = kvp_get(k, "email")) | |
33e95f03 | 1473 | || !email_valid(email)) { |
6207d2f3 | 1474 | error(0, "user '%s' has no valid email address", vec[0]); |
1475 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1476 | return 1; | |
1477 | } | |
1478 | if(!(password = kvp_get(k, "password")) | |
1479 | || !*password) { | |
1480 | error(0, "user '%s' has no password", vec[0]); | |
1481 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1482 | return 1; | |
1483 | } | |
1484 | /* Rate-limit reminders. This hash is bounded in size by the number of | |
1485 | * users. If this is actually a problem for anyone then we can periodically | |
1486 | * clean it. */ | |
1487 | if(!last_reminder) | |
1488 | last_reminder = hash_new(sizeof (time_t)); | |
1489 | last = hash_find(last_reminder, vec[0]); | |
1490 | time(&now); | |
1491 | if(last && now < *last + config->reminder_interval) { | |
1492 | error(0, "sent a password reminder to '%s' too recently", vec[0]); | |
1493 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1494 | return 1; | |
1495 | } | |
1496 | /* Send the reminder */ | |
1497 | /* TODO this should be templatized and to some extent merged with | |
1498 | * the code in act_register() */ | |
1499 | byte_xasprintf((char **)&text, | |
1500 | "Someone requested that you be sent a reminder of your DisOrder password.\n" | |
1501 | "Your password is:\n" | |
1502 | "\n" | |
1503 | " %s\n", password); | |
1504 | if(!(text = mime_encode_text(text, &charset, &encoding))) | |
1505 | fatal(0, "cannot encode email"); | |
1506 | byte_xasprintf((char **)&content_type, "text/plain;charset=%s", | |
1507 | quote822(charset, 0)); | |
1508 | pid = sendmail_subprocess("", config->mail_sender, email, | |
1509 | "DisOrder password reminder", | |
1510 | encoding, content_type, text); | |
1511 | if(pid < 0) { | |
1512 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1513 | return 1; | |
1514 | } | |
1515 | hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE); | |
1516 | info("sending a passsword reminder to user '%s'", vec[0]); | |
1517 | /* We can only continue when the subprocess finishes */ | |
1518 | ev_child(c->ev, pid, 0, sent_reminder, c); | |
1519 | return 0; | |
1520 | } | |
1521 | ||
2b33c4cf RK |
1522 | static int c_schedule_list(struct conn *c, |
1523 | char attribute((unused)) **vec, | |
1524 | int attribute((unused)) nvec) { | |
1525 | char **ids = schedule_list(0); | |
1526 | sink_writes(ev_writer_sink(c->w), "253 ID list follows\n"); | |
1527 | while(*ids) | |
1528 | sink_printf(ev_writer_sink(c->w), "%s\n", *ids++); | |
1529 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1530 | return 1; /* completed */ | |
1531 | } | |
1532 | ||
1533 | static int c_schedule_get(struct conn *c, | |
1534 | char **vec, | |
1535 | int attribute((unused)) nvec) { | |
1536 | struct kvp *actiondata = schedule_get(vec[0]), *k; | |
1537 | ||
1538 | if(!actiondata) { | |
1539 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1540 | return 1; /* completed */ | |
1541 | } | |
1542 | /* Scheduled events are public information. Anyone with RIGHT_READ can see | |
1543 | * them. */ | |
1544 | sink_writes(ev_writer_sink(c->w), "253 Event information follows\n"); | |
1545 | for(k = actiondata; k; k = k->next) | |
1546 | sink_printf(ev_writer_sink(c->w), " %s %s\n", | |
1547 | quoteutf8(k->name), quoteutf8(k->value)); | |
1548 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1549 | return 1; /* completed */ | |
1550 | } | |
1551 | ||
1552 | static int c_schedule_del(struct conn *c, | |
1553 | char **vec, | |
1554 | int attribute((unused)) nvec) { | |
1555 | struct kvp *actiondata = schedule_get(vec[0]); | |
1556 | ||
1557 | if(!actiondata) { | |
1558 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1559 | return 1; /* completed */ | |
1560 | } | |
1561 | /* If you have admin rights you can delete anything. If you don't then you | |
1562 | * can only delete your own scheduled events. */ | |
1563 | if(!(c->rights & RIGHT_ADMIN)) { | |
1564 | const char *who = kvp_get(actiondata, "who"); | |
1565 | ||
1566 | if(!who || !c->who || strcmp(who, c->who)) { | |
1567 | sink_writes(ev_writer_sink(c->w), "551 Not authorized\n"); | |
1568 | return 1; /* completed */ | |
1569 | } | |
1570 | } | |
1571 | if(schedule_del(vec[0])) | |
1572 | sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n"); | |
1573 | else | |
1574 | sink_writes(ev_writer_sink(c->w), "250 Deleted\n"); | |
1575 | return 1; /* completed */ | |
1576 | } | |
1577 | ||
1578 | static int c_schedule_add(struct conn *c, | |
1579 | char **vec, | |
1580 | int nvec) { | |
1581 | struct kvp *actiondata = 0; | |
067eeb5f | 1582 | const char *id; |
2b33c4cf RK |
1583 | |
1584 | /* Standard fields */ | |
1585 | kvp_set(&actiondata, "who", c->who); | |
1586 | kvp_set(&actiondata, "when", vec[0]); | |
1587 | kvp_set(&actiondata, "priority", vec[1]); | |
1588 | kvp_set(&actiondata, "action", vec[2]); | |
1589 | /* Action-dependent fields */ | |
1590 | if(!strcmp(vec[2], "play")) { | |
1591 | if(nvec != 4) { | |
1592 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1593 | return 1; | |
1594 | } | |
1595 | if(!trackdb_exists(vec[3])) { | |
1596 | sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n"); | |
1597 | return 1; | |
1598 | } | |
1599 | kvp_set(&actiondata, "track", vec[3]); | |
1600 | } else if(!strcmp(vec[2], "set-global")) { | |
1601 | if(nvec < 4 || nvec > 5) { | |
1602 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1603 | return 1; | |
1604 | } | |
1605 | kvp_set(&actiondata, "key", vec[3]); | |
1606 | if(nvec > 4) | |
1607 | kvp_set(&actiondata, "value", vec[4]); | |
1608 | } else { | |
1609 | sink_writes(ev_writer_sink(c->w), "550 Unknown action\n"); | |
1610 | return 1; | |
1611 | } | |
1612 | /* schedule_add() checks user rights */ | |
1613 | id = schedule_add(c->ev, actiondata); | |
1614 | if(!id) | |
1615 | sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n"); | |
1616 | else | |
1617 | sink_printf(ev_writer_sink(c->w), "252 %s\n", id); | |
1618 | return 1; | |
1619 | } | |
1620 | ||
ddbf05c8 RK |
1621 | static int playlist_response(struct conn *c, |
1622 | int err) { | |
1623 | switch(err) { | |
1624 | case 0: | |
1625 | assert(!"cannot cope with success"); | |
1626 | case EACCES: | |
1627 | sink_writes(ev_writer_sink(c->w), "550 Access denied\n"); | |
1628 | break; | |
1629 | case EINVAL: | |
1630 | sink_writes(ev_writer_sink(c->w), "550 Invalid playlist name\n"); | |
1631 | break; | |
1632 | case ENOENT: | |
1633 | sink_writes(ev_writer_sink(c->w), "555 No such playlist\n"); | |
1634 | break; | |
1635 | default: | |
1636 | sink_writes(ev_writer_sink(c->w), "550 Error accessing playlist\n"); | |
1637 | break; | |
1638 | } | |
1639 | return 1; | |
1640 | } | |
1641 | ||
1642 | static int c_playlist_get(struct conn *c, | |
1643 | char **vec, | |
1644 | int attribute((unused)) nvec) { | |
1645 | char **tracks; | |
1646 | int err; | |
1647 | ||
1648 | if(!(err = trackdb_playlist_get(vec[0], c->who, &tracks, 0, 0))) | |
1649 | return list_response(c, "Playlist contents follows", tracks); | |
1650 | else | |
1651 | return playlist_response(c, err); | |
1652 | } | |
1653 | ||
1654 | static int c_playlist_set(struct conn *c, | |
1655 | char **vec, | |
1656 | int attribute((unused)) nvec) { | |
f65f5aff RK |
1657 | return fetch_body(c, c_playlist_set_body, vec[0]); |
1658 | } | |
1659 | ||
1660 | static int c_playlist_set_body(struct conn *c, | |
1661 | char **body, | |
1662 | int nbody, | |
1663 | void *u) { | |
1664 | const char *playlist = u; | |
1665 | int err; | |
1666 | ||
440af55d RK |
1667 | if(!c->locked_playlist |
1668 | || strcmp(playlist, c->locked_playlist)) { | |
1669 | sink_writes(ev_writer_sink(c->w), "550 Playlist is not locked\n"); | |
1670 | return 1; | |
1671 | } | |
f65f5aff RK |
1672 | if(!(err = trackdb_playlist_set(playlist, c->who, |
1673 | body, nbody, 0))) { | |
1674 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1675 | return 1; | |
1676 | } else | |
1677 | return playlist_response(c, err); | |
ddbf05c8 RK |
1678 | } |
1679 | ||
1680 | static int c_playlist_get_share(struct conn *c, | |
1681 | char **vec, | |
1682 | int attribute((unused)) nvec) { | |
1683 | char *share; | |
1684 | int err; | |
1685 | ||
1686 | if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) { | |
f65f5aff | 1687 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share)); |
ddbf05c8 RK |
1688 | return 1; |
1689 | } else | |
1690 | return playlist_response(c, err); | |
1691 | } | |
1692 | ||
1693 | static int c_playlist_set_share(struct conn *c, | |
1694 | char **vec, | |
1695 | int attribute((unused)) nvec) { | |
1696 | int err; | |
1697 | ||
1698 | if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) { | |
f65f5aff | 1699 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1700 | return 1; |
1701 | } else | |
1702 | return playlist_response(c, err); | |
1703 | } | |
1704 | ||
1705 | static int c_playlists(struct conn *c, | |
1706 | char attribute((unused)) **vec, | |
1707 | int attribute((unused)) nvec) { | |
1708 | char **p; | |
1709 | ||
1710 | trackdb_playlist_list(c->who, &p, 0); | |
1711 | return list_response(c, "List of playlists follows", p); | |
1712 | } | |
1713 | ||
1714 | static int c_playlist_delete(struct conn *c, | |
1715 | char **vec, | |
1716 | int attribute((unused)) nvec) { | |
1717 | int err; | |
1718 | ||
1719 | if(!(err = trackdb_playlist_delete(vec[0], c->who))) { | |
f65f5aff | 1720 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1721 | return 1; |
1722 | } else | |
1723 | return playlist_response(c, err); | |
1724 | } | |
1725 | ||
1726 | static int c_playlist_lock(struct conn *c, | |
1727 | char **vec, | |
1728 | int attribute((unused)) nvec) { | |
1729 | int err; | |
1730 | struct conn *cc; | |
1731 | ||
1732 | /* Check we're allowed to modify this playlist */ | |
1733 | if((err = trackdb_playlist_set(vec[0], c->who, 0, 0, 0))) | |
1734 | return playlist_response(c, err); | |
1735 | /* If we hold a lock don't allow a new one */ | |
1736 | if(c->locked_playlist) { | |
1737 | sink_writes(ev_writer_sink(c->w), "550 Already holding a lock\n"); | |
1738 | return 1; | |
1739 | } | |
1740 | /* See if some other connection locks the same playlist */ | |
1741 | for(cc = connections; cc; cc = cc->next) | |
1742 | if(cc->locked_playlist && !strcmp(cc->locked_playlist, vec[0])) | |
1743 | break; | |
1744 | if(cc) { | |
1745 | /* TODO: implement config->playlist_lock_timeout */ | |
1746 | sink_writes(ev_writer_sink(c->w), "550 Already locked\n"); | |
1747 | return 1; | |
1748 | } | |
1749 | c->locked_playlist = xstrdup(vec[0]); | |
1750 | time(&c->locked_when); | |
1751 | sink_writes(ev_writer_sink(c->w), "250 Acquired lock\n"); | |
1752 | return 1; | |
1753 | } | |
1754 | ||
1755 | static int c_playlist_unlock(struct conn *c, | |
f65f5aff | 1756 | char attribute((unused)) **vec, |
ddbf05c8 RK |
1757 | int attribute((unused)) nvec) { |
1758 | if(!c->locked_playlist) { | |
1759 | sink_writes(ev_writer_sink(c->w), "550 Not holding a lock\n"); | |
1760 | return 1; | |
1761 | } | |
1762 | c->locked_playlist = 0; | |
1763 | sink_writes(ev_writer_sink(c->w), "250 Released lock\n"); | |
1764 | return 1; | |
1765 | } | |
1766 | ||
460b9539 | 1767 | static const struct command { |
eb5dc014 | 1768 | /** @brief Command name */ |
460b9539 | 1769 | const char *name; |
eb5dc014 RK |
1770 | |
1771 | /** @brief Minimum number of arguments */ | |
1772 | int minargs; | |
1773 | ||
1774 | /** @brief Maximum number of arguments */ | |
1775 | int maxargs; | |
1776 | ||
1777 | /** @brief Function to process command */ | |
460b9539 | 1778 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1779 | |
1780 | /** @brief Rights required to execute command | |
1781 | * | |
1782 | * 0 means that the command can be issued without logging in. If multiple | |
1783 | * bits are listed here any of those rights will do. | |
1784 | */ | |
1785 | rights_type rights; | |
460b9539 | 1786 | } commands[] = { |
0f55e905 | 1787 | { "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL }, |
eb5dc014 | 1788 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, |
ba39faf6 | 1789 | { "confirm", 1, 1, c_confirm, 0 }, |
b12be54a | 1790 | { "cookie", 1, 1, c_cookie, 0 }, |
eb5dc014 RK |
1791 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL }, |
1792 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, | |
1793 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1794 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1795 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1796 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1797 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1798 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1799 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1800 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1801 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1802 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1803 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1804 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1805 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1806 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1807 | { "nop", 0, 0, c_nop, 0 }, | |
1808 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1809 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1810 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
1811 | { "playing", 0, 0, c_playing, RIGHT_READ }, | |
ddbf05c8 | 1812 | { "playlist-delete", 1, 1, c_playlist_delete, RIGHT_PLAY }, |
fc80bbcd RK |
1813 | { "playlist-get", 1, 1, c_playlist_get, RIGHT_READ }, |
1814 | { "playlist-get-share", 1, 1, c_playlist_get_share, RIGHT_READ }, | |
ddbf05c8 RK |
1815 | { "playlist-lock", 1, 1, c_playlist_lock, RIGHT_PLAY }, |
1816 | { "playlist-set", 1, 1, c_playlist_set, RIGHT_PLAY }, | |
1817 | { "playlist-set-share", 2, 2, c_playlist_set_share, RIGHT_PLAY }, | |
1818 | { "playlist-unlock", 0, 0, c_playlist_unlock, RIGHT_PLAY }, | |
fc80bbcd | 1819 | { "playlists", 0, 0, c_playlists, RIGHT_READ }, |
eb5dc014 RK |
1820 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, |
1821 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1822 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1823 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1824 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1825 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1826 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
ba39faf6 | 1827 | { "register", 3, 3, c_register, RIGHT_REGISTER|RIGHT__LOCAL }, |
6207d2f3 | 1828 | { "reminder", 1, 1, c_reminder, RIGHT__LOCAL }, |
eb5dc014 | 1829 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, |
dd9af5cb | 1830 | { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN }, |
eb5dc014 RK |
1831 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, |
1832 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1833 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1834 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
2b33c4cf RK |
1835 | { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ }, |
1836 | { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ }, | |
1837 | { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ }, | |
1838 | { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ }, | |
eb5dc014 RK |
1839 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, |
1840 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1841 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1842 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1843 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1844 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1845 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1846 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1847 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 1848 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
1849 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
1850 | { "users", 0, 0, c_users, RIGHT_READ }, | |
1851 | { "version", 0, 0, c_version, RIGHT_READ }, | |
1852 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 1853 | }; |
1854 | ||
f65f5aff RK |
1855 | /** @brief Fetch a command body |
1856 | * @param c Connection | |
1857 | * @param body_callback Called with body | |
1858 | * @param u Passed to body_callback | |
1859 | * @return 1 | |
1860 | */ | |
1861 | static int fetch_body(struct conn *c, | |
1862 | body_callback_type body_callback, | |
1863 | void *u) { | |
1864 | assert(c->line_reader == command); | |
1865 | c->line_reader = body_line; | |
1866 | c->body_callback = body_callback; | |
1867 | c->body_u = u; | |
1868 | vector_init(c->body); | |
1869 | return 1; | |
1870 | } | |
1871 | ||
1872 | /** @brief @ref line_reader_type callback for command body lines | |
1873 | * @param c Connection | |
1874 | * @param line Line | |
1875 | * @return 1 if complete, 0 if incomplete | |
1876 | * | |
1877 | * Called from reader_callback(). | |
1878 | */ | |
1879 | static int body_line(struct conn *c, | |
1880 | char *line) { | |
1881 | if(*line == '.') { | |
1882 | ++line; | |
1883 | if(!*line) { | |
1884 | /* That's the lot */ | |
1885 | c->line_reader = command; | |
1886 | vector_terminate(c->body); | |
1887 | return c->body_callback(c, c->body->vec, c->body->nvec, c->body_u); | |
1888 | } | |
1889 | } | |
1890 | vector_append(c->body, xstrdup(line)); | |
1891 | return 1; /* completed */ | |
1892 | } | |
1893 | ||
460b9539 | 1894 | static void command_error(const char *msg, void *u) { |
1895 | struct conn *c = u; | |
1896 | ||
1897 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
1898 | } | |
1899 | ||
f65f5aff RK |
1900 | /** @brief @ref line_reader_type callback for commands |
1901 | * @param c Connection | |
1902 | * @param line Line | |
1903 | * @return 1 if complete, 0 if incomplete | |
1904 | * | |
1905 | * Called from reader_callback(). | |
1906 | */ | |
460b9539 | 1907 | static int command(struct conn *c, char *line) { |
1908 | char **vec; | |
1909 | int nvec, n; | |
1910 | ||
1911 | D(("server command %s", line)); | |
f9635e06 RK |
1912 | /* We force everything into NFC as early as possible */ |
1913 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
1914 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
1915 | return 1; | |
1916 | } | |
460b9539 | 1917 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
1918 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
1919 | return 1; | |
1920 | } | |
1921 | if(nvec == 0) { | |
1922 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
1923 | return 1; | |
1924 | } | |
ba937f01 | 1925 | if((n = TABLE_FIND(commands, name, vec[0])) < 0) |
460b9539 | 1926 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); |
1927 | else { | |
eb5dc014 RK |
1928 | if(commands[n].rights |
1929 | && !(c->rights & commands[n].rights)) { | |
834e7c4a | 1930 | error(0, "%s attempted %s but lacks required rights", c->who ? c->who : "NULL", |
1931 | commands[n].name); | |
b4a80f69 | 1932 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
460b9539 | 1933 | return 1; |
1934 | } | |
1935 | ++vec; | |
1936 | --nvec; | |
1937 | if(nvec < commands[n].minargs) { | |
1938 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
1939 | return 1; | |
1940 | } | |
1941 | if(nvec > commands[n].maxargs) { | |
1942 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
1943 | return 1; | |
1944 | } | |
1945 | return commands[n].fn(c, vec, nvec); | |
1946 | } | |
1947 | return 1; /* completed */ | |
1948 | } | |
1949 | ||
1950 | /* redirect to the right reader callback for our current state */ | |
1951 | static int redirect_reader_callback(ev_source *ev, | |
1952 | ev_reader *reader, | |
460b9539 | 1953 | void *ptr, |
1954 | size_t bytes, | |
1955 | int eof, | |
1956 | void *u) { | |
1957 | struct conn *c = u; | |
1958 | ||
75d64210 | 1959 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 1960 | } |
1961 | ||
1962 | /* the main command reader */ | |
1963 | static int reader_callback(ev_source attribute((unused)) *ev, | |
1964 | ev_reader *reader, | |
460b9539 | 1965 | void *ptr, |
1966 | size_t bytes, | |
1967 | int eof, | |
1968 | void *u) { | |
1969 | struct conn *c = u; | |
1970 | char *eol; | |
1971 | int complete; | |
1972 | ||
1973 | D(("server reader_callback")); | |
1974 | while((eol = memchr(ptr, '\n', bytes))) { | |
1975 | *eol++ = 0; | |
1976 | ev_reader_consume(reader, eol - (char *)ptr); | |
f65f5aff | 1977 | complete = c->line_reader(c, ptr); /* usually command() */ |
460b9539 | 1978 | bytes -= (eol - (char *)ptr); |
1979 | ptr = eol; | |
1980 | if(!complete) { | |
1981 | /* the command had better have set a new reader callback */ | |
1982 | if(bytes || eof) | |
1983 | /* there are further bytes to read, or we are at eof; arrange for the | |
1984 | * command's reader callback to handle them */ | |
1985 | return ev_reader_incomplete(reader); | |
1986 | /* nothing's going on right now */ | |
1987 | return 0; | |
1988 | } | |
1989 | /* command completed, we can go around and handle the next one */ | |
1990 | } | |
1991 | if(eof) { | |
1992 | if(bytes) | |
1993 | error(0, "S%x unterminated line", c->tag); | |
8d8b8c1f | 1994 | D(("normal reader close")); |
397ef7bb RK |
1995 | c->r = 0; |
1996 | if(c->w) { | |
8d8b8c1f | 1997 | D(("close associated writer")); |
397ef7bb RK |
1998 | ev_writer_close(c->w); |
1999 | c->w = 0; | |
2000 | } | |
0126692c | 2001 | remove_connection(c); |
460b9539 | 2002 | } |
2003 | return 0; | |
2004 | } | |
2005 | ||
2006 | static int listen_callback(ev_source *ev, | |
2007 | int fd, | |
2008 | const struct sockaddr attribute((unused)) *remote, | |
2009 | socklen_t attribute((unused)) rlen, | |
2010 | void *u) { | |
2011 | const struct listener *l = u; | |
2012 | struct conn *c = xmalloc(sizeof *c); | |
2013 | static unsigned tags; | |
2014 | ||
2015 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
2016 | nonblock(fd); | |
2017 | cloexec(fd); | |
ad492e00 | 2018 | c->next = connections; |
460b9539 | 2019 | c->tag = tags++; |
2020 | c->ev = ev; | |
e8c92ba7 RK |
2021 | c->w = ev_writer_new(ev, fd, writer_error, c, |
2022 | "client writer"); | |
2023 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, | |
2024 | "client reader"); | |
75d64210 | 2025 | ev_tie(c->r, c->w); |
460b9539 | 2026 | c->fd = fd; |
2027 | c->reader = reader_callback; | |
2028 | c->l = l; | |
eb5dc014 | 2029 | c->rights = 0; |
f65f5aff | 2030 | c->line_reader = command; |
ad492e00 | 2031 | connections = c; |
460b9539 | 2032 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
2033 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
2034 | 2, | |
b3141726 RK |
2035 | config->authorization_algorithm, |
2036 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 2037 | return 0; |
2038 | } | |
2039 | ||
2040 | int server_start(ev_source *ev, int pf, | |
2041 | size_t socklen, const struct sockaddr *sa, | |
2042 | const char *name) { | |
2043 | int fd; | |
2044 | struct listener *l = xmalloc(sizeof *l); | |
2045 | static const int one = 1; | |
2046 | ||
2047 | D(("server_init socket %s", name)); | |
2048 | fd = xsocket(pf, SOCK_STREAM, 0); | |
2049 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
2050 | if(bind(fd, sa, socklen) < 0) { | |
2051 | error(errno, "error binding to %s", name); | |
2052 | return -1; | |
2053 | } | |
2054 | xlisten(fd, 128); | |
2055 | nonblock(fd); | |
2056 | cloexec(fd); | |
2057 | l->name = name; | |
2058 | l->pf = pf; | |
e8c92ba7 RK |
2059 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
2060 | exit(EXIT_FAILURE); | |
460b9539 | 2061 | return fd; |
2062 | } | |
2063 | ||
2064 | int server_stop(ev_source *ev, int fd) { | |
2065 | xclose(fd); | |
2066 | return ev_listen_cancel(ev, fd); | |
2067 | } | |
2068 | ||
2069 | /* | |
2070 | Local Variables: | |
2071 | c-basic-offset:2 | |
2072 | comment-column:40 | |
2073 | fill-column:79 | |
2074 | End: | |
2075 | */ |