Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
1020001c | 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 | */ | |
c4e2cfdd RK |
20 | /** @file lib/client.c |
21 | * @brief Simple C client | |
22 | * | |
23 | * See @file lib/eclient.c for an asynchronous-capable client | |
24 | * implementation. | |
25 | */ | |
460b9539 | 26 | |
27 | #include <config.h> | |
28 | #include "types.h" | |
29 | ||
30 | #include <sys/types.h> | |
31 | #include <sys/socket.h> | |
32 | #include <netinet/in.h> | |
33 | #include <sys/un.h> | |
34 | #include <string.h> | |
35 | #include <stdio.h> | |
36 | #include <unistd.h> | |
37 | #include <errno.h> | |
38 | #include <netdb.h> | |
39 | #include <stdlib.h> | |
f0feb22e | 40 | #include <pcre.h> |
460b9539 | 41 | |
42 | #include "log.h" | |
43 | #include "mem.h" | |
44 | #include "configuration.h" | |
45 | #include "queue.h" | |
46 | #include "client.h" | |
47 | #include "charset.h" | |
48 | #include "hex.h" | |
49 | #include "split.h" | |
50 | #include "vector.h" | |
51 | #include "inputline.h" | |
52 | #include "kvp.h" | |
53 | #include "syscalls.h" | |
54 | #include "printf.h" | |
55 | #include "sink.h" | |
56 | #include "addr.h" | |
57 | #include "authhash.h" | |
58 | #include "client-common.h" | |
5df73aeb | 59 | #include "rights.h" |
f0feb22e | 60 | #include "trackdb.h" |
460b9539 | 61 | |
62 | struct disorder_client { | |
63 | FILE *fpin, *fpout; | |
64 | char *ident; | |
65 | char *user; | |
66 | int verbose; | |
67 | }; | |
68 | ||
c4e2cfdd RK |
69 | /** @brief Create a new client |
70 | * @param verbose If nonzero, write extra junk to stderr | |
71 | * @return Pointer to new client | |
72 | * | |
fdf98378 | 73 | * You must call disorder_connect(), disorder_connect_user() or |
74 | * disorder_connect_cookie() to connect it. Use disorder_close() to | |
75 | * dispose of the client when finished with it. | |
c4e2cfdd | 76 | */ |
460b9539 | 77 | disorder_client *disorder_new(int verbose) { |
78 | disorder_client *c = xmalloc(sizeof (struct disorder_client)); | |
79 | ||
80 | c->verbose = verbose; | |
81 | return c; | |
82 | } | |
83 | ||
c4e2cfdd RK |
84 | /** @brief Read a response line |
85 | * @param c Client | |
86 | * @param rp Where to store response, or NULL (UTF-8) | |
87 | * @return Response code 0-999 or -1 on error | |
88 | */ | |
460b9539 | 89 | static int response(disorder_client *c, char **rp) { |
90 | char *r; | |
91 | ||
92 | if(inputline(c->ident, c->fpin, &r, '\n')) | |
93 | return -1; | |
94 | D(("response: %s", r)); | |
95 | if(rp) | |
96 | *rp = r; | |
97 | if(r[0] >= '0' && r[0] <= '9' | |
98 | && r[1] >= '0' && r[1] <= '9' | |
99 | && r[2] >= '0' && r[2] <= '9' | |
100 | && r[3] == ' ') | |
101 | return (r[0] * 10 + r[1]) * 10 + r[2] - 111 * '0'; | |
102 | else { | |
103 | error(0, "invalid reply format from %s", c->ident); | |
104 | return -1; | |
105 | } | |
106 | } | |
107 | ||
c4e2cfdd RK |
108 | /** @brief Read and partially parse a response |
109 | * @param c Client | |
110 | * @param rp Where to store response text (or NULL) (UTF-8) | |
111 | * @return 0 on success, non-0 on error | |
112 | * | |
113 | * 5xx responses count as errors. | |
114 | * | |
115 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
116 | * commentary for a command where it would normally be meaningful). | |
117 | * | |
118 | * NB that the response will NOT be converted to the local encoding. | |
460b9539 | 119 | */ |
120 | static int check_response(disorder_client *c, char **rp) { | |
121 | int rc; | |
122 | char *r; | |
123 | ||
124 | if((rc = response(c, &r)) == -1) | |
125 | return -1; | |
126 | else if(rc / 100 == 2) { | |
127 | if(rp) | |
128 | *rp = (rc % 10 == 9) ? 0 : xstrdup(r + 4); | |
129 | return 0; | |
130 | } else { | |
131 | if(c->verbose) | |
132 | error(0, "from %s: %s", c->ident, utf82mb(r)); | |
133 | return -1; | |
134 | } | |
135 | } | |
136 | ||
c4e2cfdd RK |
137 | /** @brief Issue a command and parse a simple response |
138 | * @param c Client | |
139 | * @param rp Where to store result, or NULL | |
140 | * @param cmd Command | |
141 | * @param ap Arguments (UTF-8), terminated by (char *)0 | |
142 | * @return 0 on success, non-0 on error | |
143 | * | |
144 | * 5xx responses count as errors. | |
145 | * | |
146 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
147 | * commentary for a command where it would normally be meaningful). | |
148 | * | |
149 | * NB that the response will NOT be converted to the local encoding | |
150 | * nor will quotes be stripped. See dequote(). | |
151 | */ | |
460b9539 | 152 | static int disorder_simple_v(disorder_client *c, |
153 | char **rp, | |
154 | const char *cmd, va_list ap) { | |
155 | const char *arg; | |
156 | struct dynstr d; | |
157 | ||
158 | if(cmd) { | |
159 | dynstr_init(&d); | |
160 | dynstr_append_string(&d, cmd); | |
161 | while((arg = va_arg(ap, const char *))) { | |
162 | dynstr_append(&d, ' '); | |
163 | dynstr_append_string(&d, quoteutf8(arg)); | |
164 | } | |
165 | dynstr_append(&d, '\n'); | |
166 | dynstr_terminate(&d); | |
167 | D(("command: %s", d.vec)); | |
168 | if(fputs(d.vec, c->fpout) < 0 || fflush(c->fpout)) { | |
169 | error(errno, "error writing to %s", c->ident); | |
170 | return -1; | |
171 | } | |
172 | } | |
173 | return check_response(c, rp); | |
174 | } | |
175 | ||
c4e2cfdd RK |
176 | /** @brief Issue a command and parse a simple response |
177 | * @param c Client | |
178 | * @param rp Where to store result, or NULL (UTF-8) | |
179 | * @param cmd Command | |
180 | * @return 0 on success, non-0 on error | |
181 | * | |
182 | * The remaining arguments are command arguments, terminated by (char | |
183 | * *)0. They should be in UTF-8. | |
184 | * | |
185 | * 5xx responses count as errors. | |
186 | * | |
187 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
188 | * commentary for a command where it would normally be meaningful). | |
189 | * | |
190 | * NB that the response will NOT be converted to the local encoding | |
191 | * nor will quotes be stripped. See dequote(). | |
460b9539 | 192 | */ |
193 | static int disorder_simple(disorder_client *c, | |
194 | char **rp, | |
195 | const char *cmd, ...) { | |
196 | va_list ap; | |
197 | int ret; | |
198 | ||
199 | va_start(ap, cmd); | |
200 | ret = disorder_simple_v(c, rp, cmd, ap); | |
201 | va_end(ap); | |
202 | return ret; | |
203 | } | |
204 | ||
0227f67d RK |
205 | /** @brief Dequote a result string |
206 | * @param rc 0 on success, non-0 on error | |
207 | * @param rp Where result string is stored (UTF-8) | |
208 | * @return @p rc | |
209 | * | |
210 | * This is used as a wrapper around disorder_simple() to dequote | |
211 | * results in place. | |
212 | */ | |
213 | static int dequote(int rc, char **rp) { | |
214 | char **rr; | |
215 | if(!rc) { | |
216 | if((rr = split(*rp, 0, SPLIT_QUOTES, 0, 0)) && *rr) { | |
217 | *rp = *rr; | |
218 | return 0; | |
219 | } | |
220 | error(0, "invalid reply: %s", *rp); | |
460b9539 | 221 | } |
0227f67d | 222 | return -1; |
460b9539 | 223 | } |
224 | ||
0227f67d | 225 | /** @brief Generic connection routine |
c4e2cfdd | 226 | * @param c Client |
0227f67d RK |
227 | * @param username Username to log in with or NULL |
228 | * @param password Password to log in with or NULL | |
229 | * @param cookie Cookie to log in with or NULL | |
c4e2cfdd RK |
230 | * @return 0 on success, non-0 on error |
231 | * | |
0227f67d RK |
232 | * @p cookie is tried first if not NULL. If it is NULL then @p |
233 | * username must not be. If @p username is not NULL then nor may @p | |
234 | * password be. | |
c4e2cfdd | 235 | */ |
0227f67d RK |
236 | static int disorder_connect_generic(disorder_client *c, |
237 | const char *username, | |
238 | const char *password, | |
239 | const char *cookie) { | |
637fdea3 | 240 | int fd = -1, fd2 = -1, nrvec; |
460b9539 | 241 | unsigned char *nonce; |
242 | size_t nl; | |
243 | const char *res; | |
637fdea3 | 244 | char *r, **rvec; |
7b32e917 | 245 | const char *protocol, *algorithm, *challenge; |
0227f67d RK |
246 | struct sockaddr *sa; |
247 | socklen_t salen; | |
460b9539 | 248 | |
0227f67d | 249 | if((salen = find_server(&sa, &c->ident)) == (socklen_t)-1) |
460b9539 | 250 | return -1; |
460b9539 | 251 | c->fpin = c->fpout = 0; |
252 | if((fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) { | |
253 | error(errno, "error calling socket"); | |
254 | return -1; | |
255 | } | |
0227f67d | 256 | if(connect(fd, sa, salen) < 0) { |
460b9539 | 257 | error(errno, "error calling connect"); |
258 | goto error; | |
259 | } | |
260 | if((fd2 = dup(fd)) < 0) { | |
261 | error(errno, "error calling dup"); | |
262 | goto error; | |
263 | } | |
264 | if(!(c->fpin = fdopen(fd, "rb"))) { | |
265 | error(errno, "error calling fdopen"); | |
266 | goto error; | |
267 | } | |
268 | fd = -1; | |
269 | if(!(c->fpout = fdopen(fd2, "wb"))) { | |
270 | error(errno, "error calling fdopen"); | |
271 | goto error; | |
272 | } | |
273 | fd2 = -1; | |
460b9539 | 274 | if(disorder_simple(c, &r, 0, (const char *)0)) |
275 | return -1; | |
637fdea3 RK |
276 | if(!(rvec = split(r, &nrvec, SPLIT_QUOTES, 0, 0))) |
277 | return -1; | |
7b32e917 RK |
278 | if(nrvec != 3) { |
279 | error(0, "cannot parse server greeting %s", r); | |
280 | return -1; | |
637fdea3 | 281 | } |
7b32e917 RK |
282 | protocol = *rvec++; |
283 | if(strcmp(protocol, "2")) { | |
284 | error(0, "unknown protocol version: %s", protocol); | |
637fdea3 | 285 | return -1; |
7b32e917 RK |
286 | } |
287 | algorithm = *rvec++; | |
288 | challenge = *rvec++; | |
289 | if(!(nonce = unhex(challenge, &nl))) | |
460b9539 | 290 | return -1; |
0227f67d RK |
291 | if(cookie) { |
292 | if(!dequote(disorder_simple(c, &c->user, "cookie", cookie, (char *)0), | |
293 | &c->user)) | |
294 | return 0; /* success */ | |
295 | if(!username) { | |
296 | error(0, "cookie did not work and no username available"); | |
297 | return -1; | |
298 | } | |
299 | } | |
7b32e917 | 300 | if(!(res = authhash(nonce, nl, password, algorithm))) goto error; |
460b9539 | 301 | if(disorder_simple(c, 0, "user", username, res, (char *)0)) |
302 | return -1; | |
303 | c->user = xstrdup(username); | |
304 | return 0; | |
305 | error: | |
306 | if(c->fpin) fclose(c->fpin); | |
307 | if(c->fpout) fclose(c->fpout); | |
308 | if(fd2 != -1) close(fd2); | |
309 | if(fd != -1) close(fd); | |
310 | return -1; | |
311 | } | |
312 | ||
fdf98378 | 313 | /** @brief Connect a client with a specified username and password |
314 | * @param c Client | |
315 | * @param username Username to log in with | |
316 | * @param password Password to log in with | |
317 | * @return 0 on success, non-0 on error | |
318 | */ | |
319 | int disorder_connect_user(disorder_client *c, | |
320 | const char *username, | |
321 | const char *password) { | |
322 | return disorder_connect_generic(c, | |
323 | username, | |
324 | password, | |
325 | 0); | |
326 | } | |
327 | ||
0227f67d RK |
328 | /** @brief Connect a client |
329 | * @param c Client | |
330 | * @return 0 on success, non-0 on error | |
331 | * | |
332 | * The connection will use the username and password found in @ref | |
333 | * config, or directly from the database if no password is found and | |
334 | * the database is readable (usually only for root). | |
335 | */ | |
336 | int disorder_connect(disorder_client *c) { | |
337 | const char *username, *password; | |
338 | ||
339 | if(!(username = config->username)) { | |
340 | error(0, "no username configured"); | |
341 | return -1; | |
342 | } | |
343 | password = config->password; | |
344 | if(!password) { | |
345 | /* Maybe we can read the database */ | |
346 | /* TODO failure to open the database should not be fatal */ | |
347 | trackdb_init(TRACKDB_NO_RECOVER|TRACKDB_NO_UPGRADE); | |
348 | trackdb_open(TRACKDB_READ_ONLY); | |
349 | password = trackdb_get_password(username); | |
350 | trackdb_close(); | |
351 | } | |
352 | if(!password) { | |
353 | /* Oh well */ | |
354 | error(0, "no password configured"); | |
355 | return -1; | |
356 | } | |
357 | return disorder_connect_generic(c, | |
358 | username, | |
359 | password, | |
360 | 0); | |
361 | } | |
362 | ||
363 | /** @brief Connect a client | |
364 | * @param c Client | |
365 | * @param cookie Cookie to log in with, or NULL | |
366 | * @return 0 on success, non-0 on error | |
367 | * | |
368 | * If @p cookie is NULL or does not work then we attempt to log in as | |
369 | * guest instead (so when the cookie expires only an extra round trip | |
370 | * is needed rathre than a complete new login). | |
371 | */ | |
372 | int disorder_connect_cookie(disorder_client *c, | |
373 | const char *cookie) { | |
374 | return disorder_connect_generic(c, | |
375 | "guest", | |
376 | "", | |
377 | cookie); | |
378 | } | |
379 | ||
c4e2cfdd RK |
380 | /** @brief Close a client |
381 | * @param c Client | |
382 | * @return 0 on succcess, non-0 on errior | |
383 | * | |
384 | * The client is still closed even on error. It might well be | |
385 | * appropriate to ignore the return value. | |
386 | */ | |
460b9539 | 387 | int disorder_close(disorder_client *c) { |
388 | int ret = 0; | |
389 | ||
390 | if(c->fpin) { | |
391 | if(fclose(c->fpin) < 0) { | |
392 | error(errno, "error calling fclose"); | |
393 | ret = -1; | |
394 | } | |
395 | c->fpin = 0; | |
396 | } | |
397 | if(c->fpout) { | |
398 | if(fclose(c->fpout) < 0) { | |
399 | error(errno, "error calling fclose"); | |
400 | ret = -1; | |
401 | } | |
402 | c->fpout = 0; | |
403 | } | |
0227f67d RK |
404 | c->ident = 0; |
405 | c->user = 0; | |
460b9539 | 406 | return 0; |
407 | } | |
408 | ||
c4e2cfdd RK |
409 | /** @brief Play a track |
410 | * @param c Client | |
411 | * @param track Track to play (UTF-8) | |
412 | * @return 0 on success, non-0 on error | |
413 | */ | |
460b9539 | 414 | int disorder_play(disorder_client *c, const char *track) { |
415 | return disorder_simple(c, 0, "play", track, (char *)0); | |
416 | } | |
417 | ||
c4e2cfdd RK |
418 | /** @brief Remove a track |
419 | * @param c Client | |
420 | * @param track Track to remove (UTF-8) | |
421 | * @return 0 on success, non-0 on error | |
422 | */ | |
460b9539 | 423 | int disorder_remove(disorder_client *c, const char *track) { |
424 | return disorder_simple(c, 0, "remove", track, (char *)0); | |
425 | } | |
426 | ||
c4e2cfdd RK |
427 | /** @brief Move a track |
428 | * @param c Client | |
429 | * @param track Track to move (UTF-8) | |
430 | * @param delta Distance to move by | |
431 | * @return 0 on success, non-0 on error | |
432 | */ | |
460b9539 | 433 | int disorder_move(disorder_client *c, const char *track, int delta) { |
434 | char d[16]; | |
435 | ||
436 | byte_snprintf(d, sizeof d, "%d", delta); | |
437 | return disorder_simple(c, 0, "move", track, d, (char *)0); | |
438 | } | |
439 | ||
c4e2cfdd RK |
440 | /** @brief Enable play |
441 | * @param c Client | |
442 | * @return 0 on success, non-0 on error | |
443 | */ | |
460b9539 | 444 | int disorder_enable(disorder_client *c) { |
445 | return disorder_simple(c, 0, "enable", (char *)0); | |
446 | } | |
447 | ||
c4e2cfdd RK |
448 | /** @brief Disable play |
449 | * @param c Client | |
450 | * @return 0 on success, non-0 on error | |
451 | */ | |
460b9539 | 452 | int disorder_disable(disorder_client *c) { |
453 | return disorder_simple(c, 0, "disable", (char *)0); | |
454 | } | |
455 | ||
c4e2cfdd RK |
456 | /** @brief Scratch the currently playing track |
457 | * @param id Playing track ID or NULL (UTF-8) | |
458 | * @param c Client | |
459 | * @return 0 on success, non-0 on error | |
460 | */ | |
460b9539 | 461 | int disorder_scratch(disorder_client *c, const char *id) { |
462 | return disorder_simple(c, 0, "scratch", id, (char *)0); | |
463 | } | |
464 | ||
c4e2cfdd RK |
465 | /** @brief Shut down the server |
466 | * @param c Client | |
467 | * @return 0 on success, non-0 on error | |
468 | */ | |
460b9539 | 469 | int disorder_shutdown(disorder_client *c) { |
470 | return disorder_simple(c, 0, "shutdown", (char *)0); | |
471 | } | |
472 | ||
c4e2cfdd RK |
473 | /** @brief Make the server re-read its configuration |
474 | * @param c Client | |
475 | * @return 0 on success, non-0 on error | |
476 | */ | |
460b9539 | 477 | int disorder_reconfigure(disorder_client *c) { |
478 | return disorder_simple(c, 0, "reconfigure", (char *)0); | |
479 | } | |
480 | ||
c4e2cfdd RK |
481 | /** @brief Rescan tracks |
482 | * @param c Client | |
483 | * @return 0 on success, non-0 on error | |
484 | */ | |
460b9539 | 485 | int disorder_rescan(disorder_client *c) { |
486 | return disorder_simple(c, 0, "rescan", (char *)0); | |
487 | } | |
488 | ||
c4e2cfdd RK |
489 | /** @brief Get server version number |
490 | * @param c Client | |
491 | * @param rp Where to store version string (UTF-8) | |
492 | * @return 0 on success, non-0 on error | |
493 | */ | |
460b9539 | 494 | int disorder_version(disorder_client *c, char **rp) { |
7b32e917 | 495 | return dequote(disorder_simple(c, rp, "version", (char *)0), rp); |
460b9539 | 496 | } |
497 | ||
498 | static void client_error(const char *msg, | |
499 | void attribute((unused)) *u) { | |
500 | error(0, "error parsing reply: %s", msg); | |
501 | } | |
502 | ||
c4e2cfdd RK |
503 | /** @brief Get currently playing track |
504 | * @param c Client | |
505 | * @param qp Where to store track information | |
506 | * @return 0 on success, non-0 on error | |
507 | * | |
508 | * @p qp gets NULL if no track is playing. | |
509 | */ | |
460b9539 | 510 | int disorder_playing(disorder_client *c, struct queue_entry **qp) { |
511 | char *r; | |
512 | struct queue_entry *q; | |
513 | ||
514 | if(disorder_simple(c, &r, "playing", (char *)0)) | |
515 | return -1; | |
516 | if(r) { | |
517 | q = xmalloc(sizeof *q); | |
518 | if(queue_unmarshall(q, r, client_error, 0)) | |
519 | return -1; | |
520 | *qp = q; | |
521 | } else | |
522 | *qp = 0; | |
523 | return 0; | |
524 | } | |
525 | ||
526 | static int disorder_somequeue(disorder_client *c, | |
527 | const char *cmd, struct queue_entry **qp) { | |
528 | struct queue_entry *qh, **qt = &qh, *q; | |
529 | char *l; | |
530 | ||
531 | if(disorder_simple(c, 0, cmd, (char *)0)) | |
532 | return -1; | |
533 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0) { | |
534 | if(!strcmp(l, ".")) { | |
535 | *qt = 0; | |
536 | *qp = qh; | |
537 | return 0; | |
538 | } | |
539 | q = xmalloc(sizeof *q); | |
540 | if(!queue_unmarshall(q, l, client_error, 0)) { | |
541 | *qt = q; | |
542 | qt = &q->next; | |
543 | } | |
544 | } | |
545 | if(ferror(c->fpin)) | |
546 | error(errno, "error reading %s", c->ident); | |
547 | else | |
548 | error(0, "error reading %s: unexpected EOF", c->ident); | |
549 | return -1; | |
550 | } | |
551 | ||
c4e2cfdd RK |
552 | /** @brief Get recently played tracks |
553 | * @param c Client | |
554 | * @param qp Where to store track information | |
555 | * @return 0 on success, non-0 on error | |
556 | * | |
557 | * The last entry in the list is the most recently played track. | |
558 | */ | |
460b9539 | 559 | int disorder_recent(disorder_client *c, struct queue_entry **qp) { |
560 | return disorder_somequeue(c, "recent", qp); | |
561 | } | |
562 | ||
c4e2cfdd RK |
563 | /** @brief Get queue |
564 | * @param c Client | |
565 | * @param qp Where to store track information | |
566 | * @return 0 on success, non-0 on error | |
567 | * | |
568 | * The first entry in the list will be played next. | |
569 | */ | |
460b9539 | 570 | int disorder_queue(disorder_client *c, struct queue_entry **qp) { |
571 | return disorder_somequeue(c, "queue", qp); | |
572 | } | |
573 | ||
c4e2cfdd RK |
574 | /** @brief Read a dot-stuffed list |
575 | * @param c Client | |
576 | * @param vecp Where to store list (UTF-8) | |
577 | * @param nvecp Where to store number of items, or NULL | |
578 | * @return 0 on success, non-0 on error | |
579 | * | |
580 | * The list will have a final NULL not counted in @p nvecp. | |
581 | */ | |
460b9539 | 582 | static int readlist(disorder_client *c, char ***vecp, int *nvecp) { |
583 | char *l; | |
584 | struct vector v; | |
585 | ||
586 | vector_init(&v); | |
587 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0) { | |
588 | if(!strcmp(l, ".")) { | |
589 | vector_terminate(&v); | |
590 | if(nvecp) | |
591 | *nvecp = v.nvec; | |
592 | *vecp = v.vec; | |
593 | return 0; | |
594 | } | |
595 | vector_append(&v, l + (*l == '.')); | |
596 | } | |
597 | if(ferror(c->fpin)) | |
598 | error(errno, "error reading %s", c->ident); | |
599 | else | |
600 | error(0, "error reading %s: unexpected EOF", c->ident); | |
601 | return -1; | |
602 | } | |
603 | ||
c4e2cfdd RK |
604 | /** @brief Issue a comamnd and get a list response |
605 | * @param c Client | |
606 | * @param vecp Where to store list (UTF-8) | |
607 | * @param nvecp Where to store number of items, or NULL | |
608 | * @param cmd Command | |
609 | * @return 0 on success, non-0 on error | |
610 | * | |
611 | * The remaining arguments are command arguments, terminated by (char | |
612 | * *)0. They should be in UTF-8. | |
613 | * | |
614 | * 5xx responses count as errors. | |
615 | */ | |
460b9539 | 616 | static int disorder_simple_list(disorder_client *c, |
617 | char ***vecp, int *nvecp, | |
618 | const char *cmd, ...) { | |
619 | va_list ap; | |
620 | int ret; | |
621 | ||
622 | va_start(ap, cmd); | |
623 | ret = disorder_simple_v(c, 0, cmd, ap); | |
624 | va_end(ap); | |
625 | if(ret) return ret; | |
626 | return readlist(c, vecp, nvecp); | |
627 | } | |
628 | ||
c4e2cfdd RK |
629 | /** @brief List directories below @p dir |
630 | * @param c Client | |
0227f67d | 631 | * @param dir Directory to list, or NULL for root (UTF-8) |
c4e2cfdd RK |
632 | * @param re Regexp that results must match, or NULL (UTF-8) |
633 | * @param vecp Where to store list (UTF-8) | |
634 | * @param nvecp Where to store number of items, or NULL | |
635 | * @return 0 on success, non-0 on error | |
636 | */ | |
460b9539 | 637 | int disorder_directories(disorder_client *c, const char *dir, const char *re, |
638 | char ***vecp, int *nvecp) { | |
639 | return disorder_simple_list(c, vecp, nvecp, "dirs", dir, re, (char *)0); | |
640 | } | |
641 | ||
c4e2cfdd RK |
642 | /** @brief List files below @p dir |
643 | * @param c Client | |
0227f67d | 644 | * @param dir Directory to list, or NULL for root (UTF-8) |
c4e2cfdd RK |
645 | * @param re Regexp that results must match, or NULL (UTF-8) |
646 | * @param vecp Where to store list (UTF-8) | |
647 | * @param nvecp Where to store number of items, or NULL | |
648 | * @return 0 on success, non-0 on error | |
649 | */ | |
460b9539 | 650 | int disorder_files(disorder_client *c, const char *dir, const char *re, |
651 | char ***vecp, int *nvecp) { | |
652 | return disorder_simple_list(c, vecp, nvecp, "files", dir, re, (char *)0); | |
653 | } | |
654 | ||
c4e2cfdd RK |
655 | /** @brief List files and directories below @p dir |
656 | * @param c Client | |
0227f67d | 657 | * @param dir Directory to list, or NULL for root (UTF-8) |
c4e2cfdd RK |
658 | * @param re Regexp that results must match, or NULL (UTF-8) |
659 | * @param vecp Where to store list (UTF-8) | |
660 | * @param nvecp Where to store number of items, or NULL | |
661 | * @return 0 on success, non-0 on error | |
662 | */ | |
460b9539 | 663 | int disorder_allfiles(disorder_client *c, const char *dir, const char *re, |
664 | char ***vecp, int *nvecp) { | |
665 | return disorder_simple_list(c, vecp, nvecp, "allfiles", dir, re, (char *)0); | |
666 | } | |
667 | ||
c4e2cfdd RK |
668 | /** @brief Return the user we logged in with |
669 | * @param c Client | |
670 | * @return User name (owned by @p c, don't modify) | |
671 | */ | |
460b9539 | 672 | char *disorder_user(disorder_client *c) { |
673 | return c->user; | |
674 | } | |
675 | ||
c4e2cfdd RK |
676 | /** @brief Set a track preference |
677 | * @param c Client | |
678 | * @param track Track name (UTF-8) | |
679 | * @param key Preference name (UTF-8) | |
680 | * @param value Preference value (UTF-8) | |
681 | * @return 0 on success, non-0 on error | |
682 | */ | |
460b9539 | 683 | int disorder_set(disorder_client *c, const char *track, |
684 | const char *key, const char *value) { | |
685 | return disorder_simple(c, 0, "set", track, key, value, (char *)0); | |
686 | } | |
687 | ||
c4e2cfdd RK |
688 | /** @brief Unset a track preference |
689 | * @param c Client | |
690 | * @param track Track name (UTF-8) | |
691 | * @param key Preference name (UTF-8) | |
692 | * @return 0 on success, non-0 on error | |
693 | */ | |
460b9539 | 694 | int disorder_unset(disorder_client *c, const char *track, |
695 | const char *key) { | |
696 | return disorder_simple(c, 0, "unset", track, key, (char *)0); | |
697 | } | |
698 | ||
c4e2cfdd RK |
699 | /** @brief Get a track preference |
700 | * @param c Client | |
701 | * @param track Track name (UTF-8) | |
702 | * @param key Preference name (UTF-8) | |
703 | * @param valuep Where to store preference value (UTF-8) | |
704 | * @return 0 on success, non-0 on error | |
705 | */ | |
460b9539 | 706 | int disorder_get(disorder_client *c, |
707 | const char *track, const char *key, char **valuep) { | |
7b32e917 RK |
708 | return dequote(disorder_simple(c, valuep, "get", track, key, (char *)0), |
709 | valuep); | |
460b9539 | 710 | } |
711 | ||
712 | static void pref_error_handler(const char *msg, | |
713 | void attribute((unused)) *u) { | |
714 | error(0, "error handling 'prefs' reply: %s", msg); | |
715 | } | |
716 | ||
c4e2cfdd RK |
717 | /** @param Get all preferences for a trcak |
718 | * @param c Client | |
719 | * @param track Track name | |
720 | * @param kp Where to store linked list of preferences | |
721 | * @return 0 on success, non-0 on error | |
722 | */ | |
460b9539 | 723 | int disorder_prefs(disorder_client *c, const char *track, struct kvp **kp) { |
724 | char **vec, **pvec; | |
725 | int nvec, npvec, n; | |
726 | struct kvp *k; | |
727 | ||
728 | if(disorder_simple_list(c, &vec, &nvec, "prefs", track, (char *)0)) | |
729 | return -1; | |
730 | for(n = 0; n < nvec; ++n) { | |
731 | if(!(pvec = split(vec[n], &npvec, SPLIT_QUOTES, pref_error_handler, 0))) | |
732 | return -1; | |
733 | if(npvec != 2) { | |
734 | pref_error_handler("malformed response", 0); | |
735 | return -1; | |
736 | } | |
737 | *kp = k = xmalloc(sizeof *k); | |
738 | k->name = pvec[0]; | |
739 | k->value = pvec[1]; | |
740 | kp = &k->next; | |
741 | } | |
742 | *kp = 0; | |
743 | return 0; | |
744 | } | |
745 | ||
c4e2cfdd RK |
746 | /** @brief Parse a boolean response |
747 | * @param cmd Command for use in error messsage | |
748 | * @param value Result from server | |
749 | * @param flagp Where to store result | |
750 | * @return 0 on success, non-0 on error | |
751 | */ | |
460b9539 | 752 | static int boolean(const char *cmd, const char *value, |
753 | int *flagp) { | |
754 | if(!strcmp(value, "yes")) *flagp = 1; | |
755 | else if(!strcmp(value, "no")) *flagp = 0; | |
756 | else { | |
757 | error(0, "malformed response to '%s'", cmd); | |
758 | return -1; | |
759 | } | |
760 | return 0; | |
761 | } | |
762 | ||
c4e2cfdd RK |
763 | /** @brief Test whether a track exists |
764 | * @param c Client | |
765 | * @param track Track name (UTF-8) | |
766 | * @param existsp Where to store result (non-0 iff does exist) | |
767 | * @return 0 on success, non-0 on error | |
768 | */ | |
460b9539 | 769 | int disorder_exists(disorder_client *c, const char *track, int *existsp) { |
770 | char *v; | |
771 | ||
772 | if(disorder_simple(c, &v, "exists", track, (char *)0)) return -1; | |
773 | return boolean("exists", v, existsp); | |
774 | } | |
775 | ||
c4e2cfdd RK |
776 | /** @brief Test whether playing is enabled |
777 | * @param c Client | |
778 | * @param enabledp Where to store result (non-0 iff enabled) | |
779 | * @return 0 on success, non-0 on error | |
780 | */ | |
460b9539 | 781 | int disorder_enabled(disorder_client *c, int *enabledp) { |
782 | char *v; | |
783 | ||
784 | if(disorder_simple(c, &v, "enabled", (char *)0)) return -1; | |
785 | return boolean("enabled", v, enabledp); | |
786 | } | |
787 | ||
c4e2cfdd RK |
788 | /** @brief Get the length of a track |
789 | * @param c Client | |
790 | * @param track Track name (UTF-8) | |
791 | * @param valuep Where to store length in seconds | |
792 | * @return 0 on success, non-0 on error | |
793 | * | |
794 | * If the length is unknown 0 is returned. | |
795 | */ | |
460b9539 | 796 | int disorder_length(disorder_client *c, const char *track, |
797 | long *valuep) { | |
798 | char *value; | |
799 | ||
800 | if(disorder_simple(c, &value, "length", track, (char *)0)) return -1; | |
801 | *valuep = atol(value); | |
802 | return 0; | |
803 | } | |
804 | ||
c4e2cfdd RK |
805 | /** @brief Search for tracks |
806 | * @param c Client | |
807 | * @param terms Search terms (UTF-8) | |
808 | * @param vecp Where to store list (UTF-8) | |
809 | * @param nvecp Where to store number of items, or NULL | |
810 | * @return 0 on success, non-0 on error | |
811 | */ | |
460b9539 | 812 | int disorder_search(disorder_client *c, const char *terms, |
813 | char ***vecp, int *nvecp) { | |
814 | return disorder_simple_list(c, vecp, nvecp, "search", terms, (char *)0); | |
815 | } | |
816 | ||
c4e2cfdd RK |
817 | /** @brief Enable random play |
818 | * @param c Client | |
819 | * @return 0 on success, non-0 on error | |
820 | */ | |
460b9539 | 821 | int disorder_random_enable(disorder_client *c) { |
822 | return disorder_simple(c, 0, "random-enable", (char *)0); | |
823 | } | |
824 | ||
c4e2cfdd RK |
825 | /** @brief Disable random play |
826 | * @param c Client | |
827 | * @return 0 on success, non-0 on error | |
828 | */ | |
460b9539 | 829 | int disorder_random_disable(disorder_client *c) { |
830 | return disorder_simple(c, 0, "random-disable", (char *)0); | |
831 | } | |
832 | ||
c4e2cfdd RK |
833 | /** @brief Test whether random play is enabled |
834 | * @param c Client | |
835 | * @param existsp Where to store result (non-0 iff enabled) | |
836 | * @return 0 on success, non-0 on error | |
837 | */ | |
460b9539 | 838 | int disorder_random_enabled(disorder_client *c, int *enabledp) { |
839 | char *v; | |
840 | ||
841 | if(disorder_simple(c, &v, "random-enabled", (char *)0)) return -1; | |
842 | return boolean("random-enabled", v, enabledp); | |
843 | } | |
844 | ||
c4e2cfdd RK |
845 | /** @brief Get server stats |
846 | * @param c Client | |
847 | * @param vecp Where to store list (UTF-8) | |
848 | * @param nvecp Where to store number of items, or NULL | |
849 | * @return 0 on success, non-0 on error | |
850 | */ | |
460b9539 | 851 | int disorder_stats(disorder_client *c, |
852 | char ***vecp, int *nvecp) { | |
853 | return disorder_simple_list(c, vecp, nvecp, "stats", (char *)0); | |
854 | } | |
855 | ||
c4e2cfdd RK |
856 | /** @brief Set volume |
857 | * @param c Client | |
858 | * @param left New left channel value | |
859 | * @param right New right channel value | |
860 | * @return 0 on success, non-0 on error | |
861 | */ | |
460b9539 | 862 | int disorder_set_volume(disorder_client *c, int left, int right) { |
863 | char *ls, *rs; | |
864 | ||
865 | if(byte_asprintf(&ls, "%d", left) < 0 | |
866 | || byte_asprintf(&rs, "%d", right) < 0) | |
867 | return -1; | |
868 | if(disorder_simple(c, 0, "volume", ls, rs, (char *)0)) return -1; | |
869 | return 0; | |
870 | } | |
871 | ||
c4e2cfdd RK |
872 | /** @brief Get volume |
873 | * @param c Client | |
874 | * @param left Where to store left channel value | |
875 | * @param right Where to store right channel value | |
876 | * @return 0 on success, non-0 on error | |
877 | */ | |
460b9539 | 878 | int disorder_get_volume(disorder_client *c, int *left, int *right) { |
879 | char *r; | |
880 | ||
881 | if(disorder_simple(c, &r, "volume", (char *)0)) return -1; | |
882 | if(sscanf(r, "%d %d", left, right) != 2) { | |
883 | error(0, "error parsing response to 'volume': '%s'", r); | |
884 | return -1; | |
885 | } | |
886 | return 0; | |
887 | } | |
888 | ||
c4e2cfdd RK |
889 | /** @brief Log to a sink |
890 | * @param c Client | |
891 | * @param s Sink to write log lines to | |
892 | * @return 0 on success, non-0 on error | |
893 | */ | |
460b9539 | 894 | int disorder_log(disorder_client *c, struct sink *s) { |
895 | char *l; | |
896 | ||
897 | if(disorder_simple(c, 0, "log", (char *)0)) return -1; | |
898 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0 && strcmp(l, ".")) | |
899 | if(sink_printf(s, "%s\n", l) < 0) return -1; | |
900 | if(ferror(c->fpin) || feof(c->fpin)) return -1; | |
901 | return 0; | |
902 | } | |
903 | ||
c4e2cfdd RK |
904 | /** @brief Look up a track name part |
905 | * @param c Client | |
906 | * @param partp Where to store result (UTF-8) | |
907 | * @param track Track name (UTF-8) | |
908 | * @param context Context (usually "sort" or "display") (UTF-8) | |
909 | * @param part Track part (UTF-8) | |
910 | * @return 0 on success, non-0 on error | |
911 | */ | |
460b9539 | 912 | int disorder_part(disorder_client *c, char **partp, |
913 | const char *track, const char *context, const char *part) { | |
7b32e917 RK |
914 | return dequote(disorder_simple(c, partp, "part", |
915 | track, context, part, (char *)0), partp); | |
460b9539 | 916 | } |
917 | ||
c4e2cfdd RK |
918 | /** @brief Resolve aliases |
919 | * @param c Client | |
920 | * @param trackkp Where to store canonical name (UTF-8) | |
921 | * @param track Track name (UTF-8) | |
922 | * @return 0 on success, non-0 on error | |
923 | */ | |
460b9539 | 924 | int disorder_resolve(disorder_client *c, char **trackp, const char *track) { |
7b32e917 RK |
925 | return dequote(disorder_simple(c, trackp, "resolve", track, (char *)0), |
926 | trackp); | |
460b9539 | 927 | } |
928 | ||
c4e2cfdd RK |
929 | /** @brief Pause the current track |
930 | * @param c Client | |
931 | * @return 0 on success, non-0 on error | |
932 | */ | |
460b9539 | 933 | int disorder_pause(disorder_client *c) { |
934 | return disorder_simple(c, 0, "pause", (char *)0); | |
935 | } | |
936 | ||
c4e2cfdd RK |
937 | /** @brief Resume the current track |
938 | * @param c Client | |
939 | * @return 0 on success, non-0 on error | |
940 | */ | |
460b9539 | 941 | int disorder_resume(disorder_client *c) { |
942 | return disorder_simple(c, 0, "resume", (char *)0); | |
943 | } | |
944 | ||
c4e2cfdd RK |
945 | /** @brief List all known tags |
946 | * @param c Client | |
947 | * @param vecp Where to store list (UTF-8) | |
948 | * @param nvecp Where to store number of items, or NULL | |
949 | * @return 0 on success, non-0 on error | |
950 | */ | |
460b9539 | 951 | int disorder_tags(disorder_client *c, |
952 | char ***vecp, int *nvecp) { | |
953 | return disorder_simple_list(c, vecp, nvecp, "tags", (char *)0); | |
954 | } | |
955 | ||
c4e2cfdd RK |
956 | /** @brief List all known users |
957 | * @param c Client | |
958 | * @param vecp Where to store list (UTF-8) | |
959 | * @param nvecp Where to store number of items, or NULL | |
960 | * @return 0 on success, non-0 on error | |
961 | */ | |
c3be4f19 RK |
962 | int disorder_users(disorder_client *c, |
963 | char ***vecp, int *nvecp) { | |
964 | return disorder_simple_list(c, vecp, nvecp, "users", (char *)0); | |
965 | } | |
966 | ||
c4e2cfdd | 967 | /** @brief Get recently added tracks |
2a10b70b | 968 | * @param c Client |
c4e2cfdd | 969 | * @param vecp Where to store pointer to list (UTF-8) |
2a10b70b RK |
970 | * @param nvecp Where to store count |
971 | * @param max Maximum tracks to fetch, or 0 for all available | |
972 | * @return 0 on success, non-0 on error | |
973 | */ | |
974 | int disorder_new_tracks(disorder_client *c, | |
975 | char ***vecp, int *nvecp, | |
976 | int max) { | |
977 | char limit[32]; | |
978 | ||
979 | sprintf(limit, "%d", max); | |
980 | return disorder_simple_list(c, vecp, nvecp, "new", limit, (char *)0); | |
981 | } | |
982 | ||
c4e2cfdd RK |
983 | /** @brief Set a global preference |
984 | * @param c Client | |
985 | * @param key Preference name (UTF-8) | |
986 | * @param value Preference value (UTF-8) | |
987 | * @return 0 on success, non-0 on error | |
988 | */ | |
460b9539 | 989 | int disorder_set_global(disorder_client *c, |
990 | const char *key, const char *value) { | |
991 | return disorder_simple(c, 0, "set-global", key, value, (char *)0); | |
992 | } | |
993 | ||
c4e2cfdd RK |
994 | /** @brief Unset a global preference |
995 | * @param c Client | |
996 | * @param key Preference name (UTF-8) | |
997 | * @return 0 on success, non-0 on error | |
998 | */ | |
460b9539 | 999 | int disorder_unset_global(disorder_client *c, const char *key) { |
1000 | return disorder_simple(c, 0, "unset-global", key, (char *)0); | |
1001 | } | |
1002 | ||
c4e2cfdd RK |
1003 | /** @brief Get a global preference |
1004 | * @param c Client | |
1005 | * @param key Preference name (UTF-8) | |
1006 | * @param valuep Where to store preference value (UTF-8) | |
1007 | * @return 0 on success, non-0 on error | |
1008 | */ | |
460b9539 | 1009 | int disorder_get_global(disorder_client *c, const char *key, char **valuep) { |
7b32e917 RK |
1010 | return dequote(disorder_simple(c, valuep, "get-global", key, (char *)0), |
1011 | valuep); | |
460b9539 | 1012 | } |
1013 | ||
c4e2cfdd RK |
1014 | /** @brief Get server's RTP address information |
1015 | * @param c Client | |
1016 | * @param addressp Where to store address (UTF-8) | |
1017 | * @param portp Where to store port (UTF-8) | |
1018 | * @return 0 on success, non-0 on error | |
1019 | */ | |
ca831831 RK |
1020 | int disorder_rtp_address(disorder_client *c, char **addressp, char **portp) { |
1021 | char *r; | |
1022 | int rc, n; | |
1023 | char **vec; | |
1024 | ||
1025 | if((rc = disorder_simple(c, &r, "rtp-address", (char *)0))) | |
1026 | return rc; | |
1027 | vec = split(r, &n, SPLIT_QUOTES, 0, 0); | |
1028 | if(n != 2) { | |
1029 | error(0, "malformed rtp-address reply"); | |
1030 | return -1; | |
1031 | } | |
1032 | *addressp = vec[0]; | |
1033 | *portp = vec[1]; | |
1034 | return 0; | |
1035 | } | |
1036 | ||
c4e2cfdd RK |
1037 | /** @brief Create a user |
1038 | * @param c Client | |
1039 | * @param user Username | |
1040 | * @param password Password | |
1041 | * @param rights Initial rights or NULL to use default | |
1042 | * @return 0 on success, non-0 on error | |
1043 | */ | |
f0feb22e | 1044 | int disorder_adduser(disorder_client *c, |
0f55e905 RK |
1045 | const char *user, const char *password, |
1046 | const char *rights) { | |
1047 | return disorder_simple(c, 0, "adduser", user, password, rights, (char *)0); | |
f0feb22e RK |
1048 | } |
1049 | ||
c4e2cfdd RK |
1050 | /** @brief Delete a user |
1051 | * @param c Client | |
1052 | * @param user Username | |
1053 | * @return 0 on success, non-0 on error | |
1054 | */ | |
f0feb22e RK |
1055 | int disorder_deluser(disorder_client *c, const char *user) { |
1056 | return disorder_simple(c, 0, "deluser", user, (char *)0); | |
1057 | } | |
1058 | ||
c4e2cfdd RK |
1059 | /** @brief Get user information |
1060 | * @param c Client | |
1061 | * @param user Username | |
1062 | * @param key Property name (UTF-8) | |
1063 | * @param valuep Where to store value (UTF-8) | |
1064 | * @return 0 on success, non-0 on error | |
1065 | */ | |
a55c70c7 RK |
1066 | int disorder_userinfo(disorder_client *c, const char *user, const char *key, |
1067 | char **valuep) { | |
7b32e917 RK |
1068 | return dequote(disorder_simple(c, valuep, "userinfo", user, key, (char *)0), |
1069 | valuep); | |
5df73aeb RK |
1070 | } |
1071 | ||
c4e2cfdd RK |
1072 | /** @brief Set user information |
1073 | * @param c Client | |
1074 | * @param user Username | |
1075 | * @param key Property name (UTF-8) | |
1076 | * @param value New property value (UTF-8) | |
1077 | * @return 0 on success, non-0 on error | |
1078 | */ | |
5df73aeb RK |
1079 | int disorder_edituser(disorder_client *c, const char *user, |
1080 | const char *key, const char *value) { | |
1081 | return disorder_simple(c, 0, "edituser", user, key, value, (char *)0); | |
1082 | } | |
1083 | ||
c4e2cfdd RK |
1084 | /** @brief Register a user |
1085 | * @param c Client | |
1086 | * @param user Username | |
1087 | * @param password Password | |
1088 | * @param email Email address (UTF-8) | |
1089 | * @param rights Initial rights or NULL to use default | |
1090 | * @param confirmp Where to store confirmation string | |
1091 | * @return 0 on success, non-0 on error | |
1092 | */ | |
ba39faf6 RK |
1093 | int disorder_register(disorder_client *c, const char *user, |
1094 | const char *password, const char *email, | |
1095 | char **confirmp) { | |
1096 | return dequote(disorder_simple(c, confirmp, "register", | |
1097 | user, password, email, (char *)0), | |
1098 | confirmp); | |
1099 | } | |
1100 | ||
c4e2cfdd RK |
1101 | /** @brief Confirm a user |
1102 | * @param c Client | |
1103 | * @param confirm Confirmation string | |
1104 | * @return 0 on success, non-0 on error | |
1105 | */ | |
ba39faf6 RK |
1106 | int disorder_confirm(disorder_client *c, const char *confirm) { |
1107 | return disorder_simple(c, 0, "confirm", confirm, (char *)0); | |
1108 | } | |
1109 | ||
c4e2cfdd RK |
1110 | /** @brief Make a cookie for this login |
1111 | * @param c Client | |
1112 | * @param cookiep Where to store cookie string | |
1113 | * @return 0 on success, non-0 on error | |
1114 | */ | |
07969f9b RK |
1115 | int disorder_make_cookie(disorder_client *c, char **cookiep) { |
1116 | return dequote(disorder_simple(c, cookiep, "make-cookie", (char *)0), | |
1117 | cookiep); | |
1118 | } | |
1119 | ||
460b9539 | 1120 | /* |
1121 | Local Variables: | |
1122 | c-basic-offset:2 | |
1123 | comment-column:40 | |
1124 | End: | |
1125 | */ |