Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
7bef40ae | 3 | * Copyright (C) 2004-2010 Richard Kettlewell |
460b9539 | 4 | * |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
460b9539 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
460b9539 | 8 | * (at your option) any later version. |
e7eb3a27 RK |
9 | * |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
460b9539 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
460b9539 | 17 | */ |
c4e2cfdd RK |
18 | /** @file lib/client.c |
19 | * @brief Simple C client | |
20 | * | |
158d0961 | 21 | * See @ref lib/eclient.c for an asynchronous-capable client |
c4e2cfdd RK |
22 | * implementation. |
23 | */ | |
460b9539 | 24 | |
05b75f8d | 25 | #include "common.h" |
460b9539 | 26 | |
27 | #include <sys/types.h> | |
28 | #include <sys/socket.h> | |
29 | #include <netinet/in.h> | |
30 | #include <sys/un.h> | |
460b9539 | 31 | #include <unistd.h> |
32 | #include <errno.h> | |
33 | #include <netdb.h> | |
f0feb22e | 34 | #include <pcre.h> |
460b9539 | 35 | |
36 | #include "log.h" | |
37 | #include "mem.h" | |
460b9539 | 38 | #include "queue.h" |
39 | #include "client.h" | |
40 | #include "charset.h" | |
41 | #include "hex.h" | |
42 | #include "split.h" | |
43 | #include "vector.h" | |
44 | #include "inputline.h" | |
45 | #include "kvp.h" | |
46 | #include "syscalls.h" | |
47 | #include "printf.h" | |
48 | #include "sink.h" | |
49 | #include "addr.h" | |
50 | #include "authhash.h" | |
51 | #include "client-common.h" | |
5df73aeb | 52 | #include "rights.h" |
f0feb22e | 53 | #include "trackdb.h" |
758aa6c3 | 54 | #include "kvp.h" |
460b9539 | 55 | |
0590cedc | 56 | /** @brief Client handle contents */ |
460b9539 | 57 | struct disorder_client { |
0590cedc RK |
58 | /** @brief Stream to read from */ |
59 | FILE *fpin; | |
60 | /** @brief Stream to write to */ | |
61 | FILE *fpout; | |
62 | /** @brief Peer description */ | |
460b9539 | 63 | char *ident; |
0590cedc | 64 | /** @brief Username */ |
460b9539 | 65 | char *user; |
0590cedc | 66 | /** @brief Report errors to @c stderr */ |
460b9539 | 67 | int verbose; |
0590cedc | 68 | /** @brief Last error string */ |
e9e8a16d | 69 | const char *last; |
460b9539 | 70 | }; |
71 | ||
c4e2cfdd RK |
72 | /** @brief Create a new client |
73 | * @param verbose If nonzero, write extra junk to stderr | |
74 | * @return Pointer to new client | |
75 | * | |
fdf98378 | 76 | * You must call disorder_connect(), disorder_connect_user() or |
77 | * disorder_connect_cookie() to connect it. Use disorder_close() to | |
78 | * dispose of the client when finished with it. | |
c4e2cfdd | 79 | */ |
460b9539 | 80 | disorder_client *disorder_new(int verbose) { |
81 | disorder_client *c = xmalloc(sizeof (struct disorder_client)); | |
82 | ||
83 | c->verbose = verbose; | |
84 | return c; | |
85 | } | |
86 | ||
c4e2cfdd RK |
87 | /** @brief Read a response line |
88 | * @param c Client | |
89 | * @param rp Where to store response, or NULL (UTF-8) | |
90 | * @return Response code 0-999 or -1 on error | |
91 | */ | |
460b9539 | 92 | static int response(disorder_client *c, char **rp) { |
93 | char *r; | |
94 | ||
e9e8a16d RK |
95 | if(inputline(c->ident, c->fpin, &r, '\n')) { |
96 | byte_xasprintf((char **)&c->last, "input error: %s", strerror(errno)); | |
460b9539 | 97 | return -1; |
e9e8a16d | 98 | } |
460b9539 | 99 | D(("response: %s", r)); |
100 | if(rp) | |
101 | *rp = r; | |
102 | if(r[0] >= '0' && r[0] <= '9' | |
103 | && r[1] >= '0' && r[1] <= '9' | |
104 | && r[2] >= '0' && r[2] <= '9' | |
bb037be2 | 105 | && r[3] == ' ') { |
106 | c->last = r + 4; | |
460b9539 | 107 | return (r[0] * 10 + r[1]) * 10 + r[2] - 111 * '0'; |
bb037be2 | 108 | } else { |
e9e8a16d | 109 | c->last = "invalid reply format"; |
2e9ba080 | 110 | disorder_error(0, "invalid reply format from %s", c->ident); |
460b9539 | 111 | return -1; |
112 | } | |
113 | } | |
114 | ||
bb037be2 | 115 | /** @brief Return last response string |
116 | * @param c Client | |
117 | * @return Last response string (UTF-8, English) or NULL | |
118 | */ | |
119 | const char *disorder_last(disorder_client *c) { | |
120 | return c->last; | |
121 | } | |
122 | ||
c4e2cfdd RK |
123 | /** @brief Read and partially parse a response |
124 | * @param c Client | |
125 | * @param rp Where to store response text (or NULL) (UTF-8) | |
126 | * @return 0 on success, non-0 on error | |
127 | * | |
128 | * 5xx responses count as errors. | |
129 | * | |
130 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
131 | * commentary for a command where it would normally be meaningful). | |
132 | * | |
133 | * NB that the response will NOT be converted to the local encoding. | |
460b9539 | 134 | */ |
135 | static int check_response(disorder_client *c, char **rp) { | |
136 | int rc; | |
137 | char *r; | |
138 | ||
139 | if((rc = response(c, &r)) == -1) | |
140 | return -1; | |
141 | else if(rc / 100 == 2) { | |
142 | if(rp) | |
143 | *rp = (rc % 10 == 9) ? 0 : xstrdup(r + 4); | |
f74f4f32 | 144 | xfree(r); |
460b9539 | 145 | return 0; |
146 | } else { | |
147 | if(c->verbose) | |
2e9ba080 | 148 | disorder_error(0, "from %s: %s", c->ident, utf82mb(r)); |
f74f4f32 | 149 | xfree(r); |
2bead829 | 150 | return rc; |
460b9539 | 151 | } |
152 | } | |
153 | ||
c4e2cfdd RK |
154 | /** @brief Issue a command and parse a simple response |
155 | * @param c Client | |
156 | * @param rp Where to store result, or NULL | |
157 | * @param cmd Command | |
158 | * @param ap Arguments (UTF-8), terminated by (char *)0 | |
159 | * @return 0 on success, non-0 on error | |
160 | * | |
161 | * 5xx responses count as errors. | |
162 | * | |
163 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
164 | * commentary for a command where it would normally be meaningful). | |
165 | * | |
166 | * NB that the response will NOT be converted to the local encoding | |
167 | * nor will quotes be stripped. See dequote(). | |
39c53343 | 168 | * |
ad131c25 | 169 | * Put @ref disorder__body in the argument list followed by a char ** |
08af2413 | 170 | * and int giving the body to follow the command. If the int is @c -1 |
0bc1d67c RK |
171 | * then the list is assumed to be NULL-terminated. This may be used |
172 | * only once. | |
173 | * | |
ad131c25 | 174 | * Put @ref disorder__list in the argument list followed by a char ** |
0bc1d67c RK |
175 | * and int giving a list of arguments to include. If the int is @c -1 |
176 | * then the list is assumed to be NULL-terminated. This may be used | |
177 | * any number of times. | |
39c53343 RK |
178 | * |
179 | * Usually you would call this via one of the following interfaces: | |
180 | * - disorder_simple() | |
c4e2cfdd | 181 | */ |
460b9539 | 182 | static int disorder_simple_v(disorder_client *c, |
183 | char **rp, | |
39c53343 | 184 | const char *cmd, |
39c53343 | 185 | va_list ap) { |
460b9539 | 186 | const char *arg; |
187 | struct dynstr d; | |
08af2413 RK |
188 | char **body = NULL; |
189 | int nbody = 0; | |
190 | int has_body = 0; | |
460b9539 | 191 | |
62ef2216 | 192 | if(!c->fpout) { |
e9e8a16d | 193 | c->last = "not connected"; |
2e9ba080 | 194 | disorder_error(0, "not connected to server"); |
62ef2216 | 195 | return -1; |
196 | } | |
460b9539 | 197 | if(cmd) { |
198 | dynstr_init(&d); | |
199 | dynstr_append_string(&d, cmd); | |
200 | while((arg = va_arg(ap, const char *))) { | |
ad131c25 | 201 | if(arg == disorder__body) { |
08af2413 RK |
202 | body = va_arg(ap, char **); |
203 | nbody = va_arg(ap, int); | |
204 | has_body = 1; | |
ad131c25 | 205 | } else if(arg == disorder__list) { |
0bc1d67c RK |
206 | char **list = va_arg(ap, char **); |
207 | int nlist = va_arg(ap, int); | |
208 | if(nlist < 0) { | |
209 | for(nlist = 0; list[nlist]; ++nlist) | |
210 | ; | |
211 | } | |
212 | for(int n = 0; n < nlist; ++n) { | |
213 | dynstr_append(&d, ' '); | |
214 | dynstr_append_string(&d, quoteutf8(arg)); | |
215 | } | |
08af2413 RK |
216 | } else { |
217 | dynstr_append(&d, ' '); | |
218 | dynstr_append_string(&d, quoteutf8(arg)); | |
219 | } | |
460b9539 | 220 | } |
221 | dynstr_append(&d, '\n'); | |
222 | dynstr_terminate(&d); | |
223 | D(("command: %s", d.vec)); | |
39c53343 RK |
224 | if(fputs(d.vec, c->fpout) < 0) |
225 | goto write_error; | |
f74f4f32 | 226 | xfree(d.vec); |
08af2413 | 227 | if(has_body) { |
39c53343 RK |
228 | if(nbody < 0) |
229 | for(nbody = 0; body[nbody]; ++nbody) | |
230 | ; | |
231 | for(int n = 0; n < nbody; ++n) { | |
232 | if(body[n][0] == '.') | |
233 | if(fputc('.', c->fpout) < 0) | |
234 | goto write_error; | |
235 | if(fputs(body[n], c->fpout) < 0) | |
236 | goto write_error; | |
237 | if(fputc('\n', c->fpout) < 0) | |
238 | goto write_error; | |
239 | } | |
240 | if(fputs(".\n", c->fpout) < 0) | |
241 | goto write_error; | |
460b9539 | 242 | } |
39c53343 RK |
243 | if(fflush(c->fpout)) |
244 | goto write_error; | |
460b9539 | 245 | } |
246 | return check_response(c, rp); | |
39c53343 RK |
247 | write_error: |
248 | byte_xasprintf((char **)&c->last, "write error: %s", strerror(errno)); | |
2e9ba080 | 249 | disorder_error(errno, "error writing to %s", c->ident); |
39c53343 | 250 | return -1; |
460b9539 | 251 | } |
252 | ||
c4e2cfdd RK |
253 | /** @brief Issue a command and parse a simple response |
254 | * @param c Client | |
255 | * @param rp Where to store result, or NULL (UTF-8) | |
256 | * @param cmd Command | |
257 | * @return 0 on success, non-0 on error | |
258 | * | |
259 | * The remaining arguments are command arguments, terminated by (char | |
260 | * *)0. They should be in UTF-8. | |
261 | * | |
262 | * 5xx responses count as errors. | |
263 | * | |
264 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
265 | * commentary for a command where it would normally be meaningful). | |
266 | * | |
267 | * NB that the response will NOT be converted to the local encoding | |
268 | * nor will quotes be stripped. See dequote(). | |
460b9539 | 269 | */ |
270 | static int disorder_simple(disorder_client *c, | |
271 | char **rp, | |
272 | const char *cmd, ...) { | |
273 | va_list ap; | |
274 | int ret; | |
275 | ||
276 | va_start(ap, cmd); | |
08af2413 | 277 | ret = disorder_simple_v(c, rp, cmd, ap); |
460b9539 | 278 | va_end(ap); |
279 | return ret; | |
280 | } | |
281 | ||
dab87ecc RK |
282 | /** @brief Issue a command and split the response |
283 | * @param c Client | |
284 | * @param vecp Where to store results | |
285 | * @param nvecp Where to store count of results | |
286 | * @param expected Expected count (or -1 to not check) | |
287 | * @param cmd Command | |
288 | * @return 0 on success, non-0 on error | |
289 | * | |
290 | * The remaining arguments are command arguments, terminated by (char | |
291 | * *)0. They should be in UTF-8. | |
292 | * | |
293 | * 5xx responses count as errors. | |
294 | * | |
295 | * @p rp will NOT be filled in for xx9 responses (where it is just | |
296 | * commentary for a command where it would normally be meaningful). | |
297 | * | |
298 | * NB that the response will NOT be converted to the local encoding | |
299 | * nor will quotes be stripped. See dequote(). | |
300 | */ | |
301 | static int disorder_simple_split(disorder_client *c, | |
302 | char ***vecp, | |
303 | int *nvecp, | |
304 | int expected, | |
305 | const char *cmd, ...) { | |
306 | va_list ap; | |
307 | int ret; | |
308 | char *r; | |
309 | char **vec; | |
310 | int nvec; | |
311 | ||
312 | va_start(ap, cmd); | |
313 | ret = disorder_simple_v(c, &r, cmd, ap); | |
314 | va_end(ap); | |
315 | if(!ret) { | |
316 | vec = split(r, &nvec, SPLIT_QUOTES, 0, 0); | |
317 | xfree(r); | |
318 | if(expected < 0 || nvec == expected) { | |
319 | *vecp = vec; | |
320 | *nvecp = nvec; | |
321 | } else { | |
322 | disorder_error(0, "malformed reply to %s", cmd); | |
323 | c->last = "malformed reply"; | |
324 | ret = -1; | |
325 | free_strings(nvec, vec); | |
326 | } | |
327 | } | |
328 | if(ret) { | |
329 | *vecp = NULL; | |
330 | *nvecp = 0; | |
331 | } | |
332 | return ret; | |
333 | } | |
334 | ||
0227f67d RK |
335 | /** @brief Dequote a result string |
336 | * @param rc 0 on success, non-0 on error | |
337 | * @param rp Where result string is stored (UTF-8) | |
338 | * @return @p rc | |
339 | * | |
340 | * This is used as a wrapper around disorder_simple() to dequote | |
341 | * results in place. | |
342 | */ | |
343 | static int dequote(int rc, char **rp) { | |
344 | char **rr; | |
2bead829 | 345 | |
0227f67d RK |
346 | if(!rc) { |
347 | if((rr = split(*rp, 0, SPLIT_QUOTES, 0, 0)) && *rr) { | |
f74f4f32 | 348 | xfree(*rp); |
0227f67d | 349 | *rp = *rr; |
f74f4f32 | 350 | xfree(rr); |
0227f67d RK |
351 | return 0; |
352 | } | |
2e9ba080 | 353 | disorder_error(0, "invalid reply: %s", *rp); |
460b9539 | 354 | } |
2bead829 | 355 | return rc; |
460b9539 | 356 | } |
357 | ||
0227f67d | 358 | /** @brief Generic connection routine |
319d7107 | 359 | * @param conf Configuration to follow |
c4e2cfdd | 360 | * @param c Client |
0227f67d RK |
361 | * @param username Username to log in with or NULL |
362 | * @param password Password to log in with or NULL | |
363 | * @param cookie Cookie to log in with or NULL | |
c4e2cfdd RK |
364 | * @return 0 on success, non-0 on error |
365 | * | |
0227f67d RK |
366 | * @p cookie is tried first if not NULL. If it is NULL then @p |
367 | * username must not be. If @p username is not NULL then nor may @p | |
368 | * password be. | |
c4e2cfdd | 369 | */ |
319d7107 RK |
370 | int disorder_connect_generic(struct config *conf, |
371 | disorder_client *c, | |
372 | const char *username, | |
373 | const char *password, | |
374 | const char *cookie) { | |
f74f4f32 RK |
375 | int fd = -1, fd2 = -1, nrvec = 0, rc; |
376 | unsigned char *nonce = NULL; | |
460b9539 | 377 | size_t nl; |
f74f4f32 RK |
378 | char *res = NULL; |
379 | char *r = NULL, **rvec = NULL; | |
7b32e917 | 380 | const char *protocol, *algorithm, *challenge; |
f74f4f32 | 381 | struct sockaddr *sa = NULL; |
0227f67d | 382 | socklen_t salen; |
460b9539 | 383 | |
319d7107 | 384 | if((salen = find_server(conf, &sa, &c->ident)) == (socklen_t)-1) |
460b9539 | 385 | return -1; |
460b9539 | 386 | c->fpin = c->fpout = 0; |
387 | if((fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) { | |
e9e8a16d | 388 | byte_xasprintf((char **)&c->last, "socket: %s", strerror(errno)); |
2e9ba080 | 389 | disorder_error(errno, "error calling socket"); |
460b9539 | 390 | return -1; |
391 | } | |
0227f67d | 392 | if(connect(fd, sa, salen) < 0) { |
e9e8a16d | 393 | byte_xasprintf((char **)&c->last, "connect: %s", strerror(errno)); |
2e9ba080 | 394 | disorder_error(errno, "error calling connect"); |
460b9539 | 395 | goto error; |
396 | } | |
397 | if((fd2 = dup(fd)) < 0) { | |
e9e8a16d | 398 | byte_xasprintf((char **)&c->last, "dup: %s", strerror(errno)); |
2e9ba080 | 399 | disorder_error(errno, "error calling dup"); |
460b9539 | 400 | goto error; |
401 | } | |
402 | if(!(c->fpin = fdopen(fd, "rb"))) { | |
e9e8a16d | 403 | byte_xasprintf((char **)&c->last, "fdopen: %s", strerror(errno)); |
2e9ba080 | 404 | disorder_error(errno, "error calling fdopen"); |
460b9539 | 405 | goto error; |
406 | } | |
407 | fd = -1; | |
408 | if(!(c->fpout = fdopen(fd2, "wb"))) { | |
e9e8a16d | 409 | byte_xasprintf((char **)&c->last, "fdopen: %s", strerror(errno)); |
2e9ba080 | 410 | disorder_error(errno, "error calling fdopen"); |
460b9539 | 411 | goto error; |
412 | } | |
413 | fd2 = -1; | |
2bead829 | 414 | if((rc = disorder_simple(c, &r, 0, (const char *)0))) |
415 | goto error_rc; | |
637fdea3 | 416 | if(!(rvec = split(r, &nrvec, SPLIT_QUOTES, 0, 0))) |
2bead829 | 417 | goto error; |
7b32e917 | 418 | if(nrvec != 3) { |
e9e8a16d | 419 | c->last = "cannot parse server greeting"; |
2e9ba080 | 420 | disorder_error(0, "cannot parse server greeting %s", r); |
2bead829 | 421 | goto error; |
637fdea3 | 422 | } |
f74f4f32 | 423 | protocol = rvec[0]; |
7b32e917 | 424 | if(strcmp(protocol, "2")) { |
e9e8a16d | 425 | c->last = "unknown protocol version"; |
2e9ba080 | 426 | disorder_error(0, "unknown protocol version: %s", protocol); |
2bead829 | 427 | goto error; |
7b32e917 | 428 | } |
f74f4f32 RK |
429 | algorithm = rvec[1]; |
430 | challenge = rvec[2]; | |
7b32e917 | 431 | if(!(nonce = unhex(challenge, &nl))) |
2bead829 | 432 | goto error; |
0227f67d RK |
433 | if(cookie) { |
434 | if(!dequote(disorder_simple(c, &c->user, "cookie", cookie, (char *)0), | |
435 | &c->user)) | |
436 | return 0; /* success */ | |
437 | if(!username) { | |
e9e8a16d | 438 | c->last = "cookie failed and no username"; |
2e9ba080 | 439 | disorder_error(0, "cookie did not work and no username available"); |
2bead829 | 440 | goto error; |
0227f67d RK |
441 | } |
442 | } | |
e9e8a16d RK |
443 | if(!(res = authhash(nonce, nl, password, algorithm))) { |
444 | c->last = "error computing authorization hash"; | |
445 | goto error; | |
446 | } | |
2bead829 | 447 | if((rc = disorder_simple(c, 0, "user", username, res, (char *)0))) |
448 | goto error_rc; | |
460b9539 | 449 | c->user = xstrdup(username); |
f74f4f32 RK |
450 | xfree(res); |
451 | free_strings(nrvec, rvec); | |
452 | xfree(nonce); | |
453 | xfree(sa); | |
454 | xfree(r); | |
460b9539 | 455 | return 0; |
456 | error: | |
2bead829 | 457 | rc = -1; |
458 | error_rc: | |
459 | if(c->fpin) { | |
460 | fclose(c->fpin); | |
461 | c->fpin = 0; | |
462 | } | |
463 | if(c->fpout) { | |
464 | fclose(c->fpout); | |
465 | c->fpout = 0; | |
466 | } | |
460b9539 | 467 | if(fd2 != -1) close(fd2); |
468 | if(fd != -1) close(fd); | |
2bead829 | 469 | return rc; |
460b9539 | 470 | } |
471 | ||
fdf98378 | 472 | /** @brief Connect a client with a specified username and password |
473 | * @param c Client | |
474 | * @param username Username to log in with | |
475 | * @param password Password to log in with | |
476 | * @return 0 on success, non-0 on error | |
477 | */ | |
478 | int disorder_connect_user(disorder_client *c, | |
479 | const char *username, | |
480 | const char *password) { | |
319d7107 RK |
481 | return disorder_connect_generic(config, |
482 | c, | |
fdf98378 | 483 | username, |
484 | password, | |
485 | 0); | |
486 | } | |
487 | ||
0227f67d RK |
488 | /** @brief Connect a client |
489 | * @param c Client | |
490 | * @return 0 on success, non-0 on error | |
491 | * | |
492 | * The connection will use the username and password found in @ref | |
493 | * config, or directly from the database if no password is found and | |
494 | * the database is readable (usually only for root). | |
495 | */ | |
496 | int disorder_connect(disorder_client *c) { | |
497 | const char *username, *password; | |
498 | ||
499 | if(!(username = config->username)) { | |
e9e8a16d | 500 | c->last = "no username"; |
2e9ba080 | 501 | disorder_error(0, "no username configured"); |
0227f67d RK |
502 | return -1; |
503 | } | |
504 | password = config->password; | |
199c2a23 RK |
505 | /* Maybe we can read the database */ |
506 | if(!password && trackdb_readable()) { | |
0227f67d RK |
507 | trackdb_init(TRACKDB_NO_RECOVER|TRACKDB_NO_UPGRADE); |
508 | trackdb_open(TRACKDB_READ_ONLY); | |
509 | password = trackdb_get_password(username); | |
510 | trackdb_close(); | |
511 | } | |
512 | if(!password) { | |
513 | /* Oh well */ | |
e9e8a16d | 514 | c->last = "no password"; |
2e9ba080 | 515 | disorder_error(0, "no password configured for user '%s'", username); |
0227f67d RK |
516 | return -1; |
517 | } | |
319d7107 RK |
518 | return disorder_connect_generic(config, |
519 | c, | |
0227f67d RK |
520 | username, |
521 | password, | |
522 | 0); | |
523 | } | |
524 | ||
525 | /** @brief Connect a client | |
526 | * @param c Client | |
527 | * @param cookie Cookie to log in with, or NULL | |
528 | * @return 0 on success, non-0 on error | |
529 | * | |
530 | * If @p cookie is NULL or does not work then we attempt to log in as | |
531 | * guest instead (so when the cookie expires only an extra round trip | |
532 | * is needed rathre than a complete new login). | |
533 | */ | |
534 | int disorder_connect_cookie(disorder_client *c, | |
535 | const char *cookie) { | |
319d7107 RK |
536 | return disorder_connect_generic(config, |
537 | c, | |
0227f67d RK |
538 | "guest", |
539 | "", | |
540 | cookie); | |
541 | } | |
542 | ||
c4e2cfdd RK |
543 | /** @brief Close a client |
544 | * @param c Client | |
545 | * @return 0 on succcess, non-0 on errior | |
546 | * | |
547 | * The client is still closed even on error. It might well be | |
548 | * appropriate to ignore the return value. | |
549 | */ | |
460b9539 | 550 | int disorder_close(disorder_client *c) { |
551 | int ret = 0; | |
552 | ||
553 | if(c->fpin) { | |
554 | if(fclose(c->fpin) < 0) { | |
e9e8a16d | 555 | byte_xasprintf((char **)&c->last, "fclose: %s", strerror(errno)); |
2e9ba080 | 556 | disorder_error(errno, "error calling fclose"); |
460b9539 | 557 | ret = -1; |
558 | } | |
559 | c->fpin = 0; | |
560 | } | |
561 | if(c->fpout) { | |
562 | if(fclose(c->fpout) < 0) { | |
e9e8a16d | 563 | byte_xasprintf((char **)&c->last, "fclose: %s", strerror(errno)); |
2e9ba080 | 564 | disorder_error(errno, "error calling fclose"); |
460b9539 | 565 | ret = -1; |
566 | } | |
567 | c->fpout = 0; | |
568 | } | |
f74f4f32 | 569 | xfree(c->ident); |
0227f67d | 570 | c->ident = 0; |
f74f4f32 | 571 | xfree(c->user); |
0227f67d | 572 | c->user = 0; |
375d9478 | 573 | return ret; |
460b9539 | 574 | } |
575 | ||
460b9539 | 576 | static void client_error(const char *msg, |
577 | void attribute((unused)) *u) { | |
2e9ba080 | 578 | disorder_error(0, "error parsing reply: %s", msg); |
460b9539 | 579 | } |
580 | ||
ec9c0462 | 581 | /** @brief Get a single queue entry |
c4e2cfdd | 582 | * @param c Client |
ec9c0462 | 583 | * @param cmd Command |
c4e2cfdd RK |
584 | * @param qp Where to store track information |
585 | * @return 0 on success, non-0 on error | |
c4e2cfdd | 586 | */ |
ec9c0462 RK |
587 | static int onequeue(disorder_client *c, const char *cmd, |
588 | struct queue_entry **qp) { | |
460b9539 | 589 | char *r; |
590 | struct queue_entry *q; | |
2bead829 | 591 | int rc; |
460b9539 | 592 | |
ec9c0462 | 593 | if((rc = disorder_simple(c, &r, cmd, (char *)0))) |
2bead829 | 594 | return rc; |
460b9539 | 595 | if(r) { |
596 | q = xmalloc(sizeof *q); | |
597 | if(queue_unmarshall(q, r, client_error, 0)) | |
598 | return -1; | |
599 | *qp = q; | |
600 | } else | |
601 | *qp = 0; | |
602 | return 0; | |
603 | } | |
604 | ||
0590cedc | 605 | /** @brief Fetch the queue, recent list, etc */ |
c12575c6 RK |
606 | static int readqueue(disorder_client *c, |
607 | struct queue_entry **qp) { | |
460b9539 | 608 | struct queue_entry *qh, **qt = &qh, *q; |
609 | char *l; | |
610 | ||
460b9539 | 611 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0) { |
612 | if(!strcmp(l, ".")) { | |
613 | *qt = 0; | |
614 | *qp = qh; | |
b251ac34 | 615 | xfree(l); |
460b9539 | 616 | return 0; |
617 | } | |
618 | q = xmalloc(sizeof *q); | |
619 | if(!queue_unmarshall(q, l, client_error, 0)) { | |
620 | *qt = q; | |
621 | qt = &q->next; | |
622 | } | |
b251ac34 | 623 | xfree(l); |
460b9539 | 624 | } |
e9e8a16d RK |
625 | if(ferror(c->fpin)) { |
626 | byte_xasprintf((char **)&c->last, "input error: %s", strerror(errno)); | |
2e9ba080 | 627 | disorder_error(errno, "error reading %s", c->ident); |
e9e8a16d | 628 | } else { |
c12575c6 | 629 | c->last = "input error: unexpected EOF"; |
2e9ba080 | 630 | disorder_error(0, "error reading %s: unexpected EOF", c->ident); |
e9e8a16d | 631 | } |
460b9539 | 632 | return -1; |
633 | } | |
634 | ||
c4e2cfdd RK |
635 | /** @brief Read a dot-stuffed list |
636 | * @param c Client | |
637 | * @param vecp Where to store list (UTF-8) | |
638 | * @param nvecp Where to store number of items, or NULL | |
639 | * @return 0 on success, non-0 on error | |
640 | * | |
641 | * The list will have a final NULL not counted in @p nvecp. | |
642 | */ | |
460b9539 | 643 | static int readlist(disorder_client *c, char ***vecp, int *nvecp) { |
644 | char *l; | |
645 | struct vector v; | |
646 | ||
647 | vector_init(&v); | |
648 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0) { | |
649 | if(!strcmp(l, ".")) { | |
650 | vector_terminate(&v); | |
651 | if(nvecp) | |
652 | *nvecp = v.nvec; | |
653 | *vecp = v.vec; | |
5d2b941b | 654 | xfree(l); |
460b9539 | 655 | return 0; |
656 | } | |
5d2b941b RK |
657 | vector_append(&v, xstrdup(l + (*l == '.'))); |
658 | xfree(l); | |
460b9539 | 659 | } |
e9e8a16d RK |
660 | if(ferror(c->fpin)) { |
661 | byte_xasprintf((char **)&c->last, "input error: %s", strerror(errno)); | |
2e9ba080 | 662 | disorder_error(errno, "error reading %s", c->ident); |
e9e8a16d RK |
663 | } else { |
664 | c->last = "input error: unexpxected EOF"; | |
2e9ba080 | 665 | disorder_error(0, "error reading %s: unexpected EOF", c->ident); |
e9e8a16d | 666 | } |
460b9539 | 667 | return -1; |
668 | } | |
669 | ||
c4e2cfdd RK |
670 | /** @brief Return the user we logged in with |
671 | * @param c Client | |
672 | * @return User name (owned by @p c, don't modify) | |
673 | */ | |
460b9539 | 674 | char *disorder_user(disorder_client *c) { |
675 | return c->user; | |
676 | } | |
677 | ||
5dc19ffd | 678 | static void pairlist_error_handler(const char *msg, |
460b9539 | 679 | void attribute((unused)) *u) { |
5dc19ffd | 680 | disorder_error(0, "error handling key-value pair reply: %s", msg); |
460b9539 | 681 | } |
682 | ||
5dc19ffd | 683 | /** @brief Get a list of key-value pairs |
c4e2cfdd | 684 | * @param c Client |
c4e2cfdd | 685 | * @param kp Where to store linked list of preferences |
5dc19ffd RK |
686 | * @param cmd Command |
687 | * @param ... Arguments | |
c4e2cfdd RK |
688 | * @return 0 on success, non-0 on error |
689 | */ | |
5dc19ffd | 690 | static int pairlist(disorder_client *c, struct kvp **kp, const char *cmd, ...) { |
460b9539 | 691 | char **vec, **pvec; |
2bead829 | 692 | int nvec, npvec, n, rc; |
460b9539 | 693 | struct kvp *k; |
5dc19ffd | 694 | va_list ap; |
460b9539 | 695 | |
5dc19ffd RK |
696 | va_start(ap, cmd); |
697 | rc = disorder_simple_v(c, 0, cmd, ap); | |
698 | va_end(ap); | |
699 | if(rc) | |
2bead829 | 700 | return rc; |
5dc19ffd RK |
701 | if((rc = readlist(c, &vec, &nvec))) |
702 | return rc; | |
460b9539 | 703 | for(n = 0; n < nvec; ++n) { |
5dc19ffd | 704 | if(!(pvec = split(vec[n], &npvec, SPLIT_QUOTES, pairlist_error_handler, 0))) |
460b9539 | 705 | return -1; |
706 | if(npvec != 2) { | |
5dc19ffd | 707 | pairlist_error_handler("malformed response", 0); |
460b9539 | 708 | return -1; |
709 | } | |
710 | *kp = k = xmalloc(sizeof *k); | |
711 | k->name = pvec[0]; | |
712 | k->value = pvec[1]; | |
713 | kp = &k->next; | |
0d047a12 | 714 | xfree(pvec); |
460b9539 | 715 | } |
0d047a12 | 716 | free_strings(nvec, vec); |
460b9539 | 717 | *kp = 0; |
718 | return 0; | |
719 | } | |
720 | ||
c4e2cfdd RK |
721 | /** @brief Parse a boolean response |
722 | * @param cmd Command for use in error messsage | |
723 | * @param value Result from server | |
724 | * @param flagp Where to store result | |
725 | * @return 0 on success, non-0 on error | |
726 | */ | |
460b9539 | 727 | static int boolean(const char *cmd, const char *value, |
728 | int *flagp) { | |
729 | if(!strcmp(value, "yes")) *flagp = 1; | |
730 | else if(!strcmp(value, "no")) *flagp = 0; | |
731 | else { | |
2e9ba080 | 732 | disorder_error(0, "malformed response to '%s'", cmd); |
460b9539 | 733 | return -1; |
734 | } | |
735 | return 0; | |
736 | } | |
737 | ||
c4e2cfdd RK |
738 | /** @brief Log to a sink |
739 | * @param c Client | |
740 | * @param s Sink to write log lines to | |
741 | * @return 0 on success, non-0 on error | |
742 | */ | |
460b9539 | 743 | int disorder_log(disorder_client *c, struct sink *s) { |
744 | char *l; | |
2bead829 | 745 | int rc; |
460b9539 | 746 | |
2bead829 | 747 | if((rc = disorder_simple(c, 0, "log", (char *)0))) |
748 | return rc; | |
460b9539 | 749 | while(inputline(c->ident, c->fpin, &l, '\n') >= 0 && strcmp(l, ".")) |
750 | if(sink_printf(s, "%s\n", l) < 0) return -1; | |
e9e8a16d RK |
751 | if(ferror(c->fpin) || feof(c->fpin)) { |
752 | byte_xasprintf((char **)&c->last, "input error: %s", | |
753 | ferror(c->fpin) ? strerror(errno) : "unexpxected EOF"); | |
754 | return -1; | |
755 | } | |
460b9539 | 756 | return 0; |
757 | } | |
758 | ||
7788b7c7 RK |
759 | #include "client-stubs.c" |
760 | ||
460b9539 | 761 | /* |
762 | Local Variables: | |
763 | c-basic-offset:2 | |
764 | comment-column:40 | |
765 | End: | |
766 | */ |