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Commit | Line | Data |
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0f113f3e MC |
1 | /* |
2 | * Written by Stephen Henson (steve@openssl.org) for the OpenSSL project | |
3 | * 2001. | |
bc37d996 DSH |
4 | */ |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2001 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
bc37d996 DSH |
14 | * |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | * | |
53 | * This product includes cryptographic software written by Eric Young | |
54 | * (eay@cryptsoft.com). This product includes software written by Tim | |
55 | * Hudson (tjh@cryptsoft.com). | |
56 | * | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
df5eaa8a | 60 | #include <ctype.h> |
bc37d996 | 61 | #include <openssl/crypto.h> |
b39fc560 | 62 | #include "internal/cryptlib.h" |
bc37d996 DSH |
63 | #include <openssl/conf.h> |
64 | #include <openssl/dso.h> | |
65 | #include <openssl/x509.h> | |
66 | ||
bc37d996 DSH |
67 | #define DSO_mod_init_name "OPENSSL_init" |
68 | #define DSO_mod_finish_name "OPENSSL_finish" | |
69 | ||
0f113f3e MC |
70 | /* |
71 | * This structure contains a data about supported modules. entries in this | |
72 | * table correspond to either dynamic or static modules. | |
bc37d996 DSH |
73 | */ |
74 | ||
0f113f3e MC |
75 | struct conf_module_st { |
76 | /* DSO of this module or NULL if static */ | |
77 | DSO *dso; | |
78 | /* Name of the module */ | |
79 | char *name; | |
80 | /* Init function */ | |
81 | conf_init_func *init; | |
82 | /* Finish function */ | |
83 | conf_finish_func *finish; | |
84 | /* Number of successfully initialized modules */ | |
85 | int links; | |
86 | void *usr_data; | |
87 | }; | |
88 | ||
89 | /* | |
90 | * This structure contains information about modules that have been | |
91 | * successfully initialized. There may be more than one entry for a given | |
92 | * module. | |
bc37d996 DSH |
93 | */ |
94 | ||
0f113f3e MC |
95 | struct conf_imodule_st { |
96 | CONF_MODULE *pmod; | |
97 | char *name; | |
98 | char *value; | |
99 | unsigned long flags; | |
100 | void *usr_data; | |
101 | }; | |
bc37d996 DSH |
102 | |
103 | static STACK_OF(CONF_MODULE) *supported_modules = NULL; | |
104 | static STACK_OF(CONF_IMODULE) *initialized_modules = NULL; | |
105 | ||
106 | static void module_free(CONF_MODULE *md); | |
107 | static void module_finish(CONF_IMODULE *imod); | |
9dd5ae65 | 108 | static int module_run(const CONF *cnf, char *name, char *value, |
0f113f3e | 109 | unsigned long flags); |
cca28b29 | 110 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
111 | conf_init_func *ifunc, |
112 | conf_finish_func *ffunc); | |
bc37d996 | 113 | static CONF_MODULE *module_find(char *name); |
9dd5ae65 | 114 | static int module_init(CONF_MODULE *pmod, char *name, char *value, |
0f113f3e | 115 | const CONF *cnf); |
a773b52a | 116 | static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value); |
bc37d996 DSH |
117 | |
118 | /* Main function: load modules from a CONF structure */ | |
119 | ||
9dd5ae65 | 120 | int CONF_modules_load(const CONF *cnf, const char *appname, |
0f113f3e MC |
121 | unsigned long flags) |
122 | { | |
123 | STACK_OF(CONF_VALUE) *values; | |
124 | CONF_VALUE *vl; | |
125 | char *vsection = NULL; | |
bc37d996 | 126 | |
0f113f3e | 127 | int ret, i; |
bc37d996 | 128 | |
0f113f3e MC |
129 | if (!cnf) |
130 | return 1; | |
bc37d996 | 131 | |
0f113f3e MC |
132 | if (appname) |
133 | vsection = NCONF_get_string(cnf, NULL, appname); | |
bc37d996 | 134 | |
0f113f3e MC |
135 | if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION))) |
136 | vsection = NCONF_get_string(cnf, NULL, "openssl_conf"); | |
bc37d996 | 137 | |
0f113f3e MC |
138 | if (!vsection) { |
139 | ERR_clear_error(); | |
140 | return 1; | |
141 | } | |
bc37d996 | 142 | |
0f113f3e | 143 | values = NCONF_get_section(cnf, vsection); |
bc37d996 | 144 | |
0f113f3e MC |
145 | if (!values) |
146 | return 0; | |
bc37d996 | 147 | |
0f113f3e MC |
148 | for (i = 0; i < sk_CONF_VALUE_num(values); i++) { |
149 | vl = sk_CONF_VALUE_value(values, i); | |
150 | ret = module_run(cnf, vl->name, vl->value, flags); | |
151 | if (ret <= 0) | |
152 | if (!(flags & CONF_MFLAGS_IGNORE_ERRORS)) | |
153 | return ret; | |
154 | } | |
bc37d996 | 155 | |
0f113f3e | 156 | return 1; |
bc37d996 | 157 | |
0f113f3e | 158 | } |
bc37d996 | 159 | |
9dd5ae65 | 160 | int CONF_modules_load_file(const char *filename, const char *appname, |
0f113f3e MC |
161 | unsigned long flags) |
162 | { | |
163 | char *file = NULL; | |
164 | CONF *conf = NULL; | |
165 | int ret = 0; | |
166 | conf = NCONF_new(NULL); | |
90945fa3 | 167 | if (conf == NULL) |
0f113f3e MC |
168 | goto err; |
169 | ||
170 | if (filename == NULL) { | |
171 | file = CONF_get1_default_config_file(); | |
172 | if (!file) | |
173 | goto err; | |
174 | } else | |
175 | file = (char *)filename; | |
176 | ||
177 | if (NCONF_load(conf, file, NULL) <= 0) { | |
178 | if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) && | |
179 | (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE)) { | |
180 | ERR_clear_error(); | |
181 | ret = 1; | |
182 | } | |
183 | goto err; | |
184 | } | |
185 | ||
186 | ret = CONF_modules_load(conf, appname, flags); | |
187 | ||
188 | err: | |
189 | if (filename == NULL) | |
190 | OPENSSL_free(file); | |
191 | NCONF_free(conf); | |
192 | ||
193 | return ret; | |
194 | } | |
bc37d996 | 195 | |
9dd5ae65 | 196 | static int module_run(const CONF *cnf, char *name, char *value, |
0f113f3e MC |
197 | unsigned long flags) |
198 | { | |
199 | CONF_MODULE *md; | |
200 | int ret; | |
201 | ||
202 | md = module_find(name); | |
203 | ||
204 | /* Module not found: try to load DSO */ | |
205 | if (!md && !(flags & CONF_MFLAGS_NO_DSO)) | |
a773b52a | 206 | md = module_load_dso(cnf, name, value); |
0f113f3e MC |
207 | |
208 | if (!md) { | |
209 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
210 | CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME); | |
211 | ERR_add_error_data(2, "module=", name); | |
212 | } | |
213 | return -1; | |
214 | } | |
215 | ||
216 | ret = module_init(md, name, value, cnf); | |
217 | ||
218 | if (ret <= 0) { | |
219 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
220 | char rcode[DECIMAL_SIZE(ret) + 1]; | |
221 | CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR); | |
222 | BIO_snprintf(rcode, sizeof rcode, "%-8d", ret); | |
223 | ERR_add_error_data(6, "module=", name, ", value=", value, | |
224 | ", retcode=", rcode); | |
225 | } | |
226 | } | |
227 | ||
228 | return ret; | |
229 | } | |
bc37d996 DSH |
230 | |
231 | /* Load a module from a DSO */ | |
a773b52a | 232 | static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value) |
0f113f3e MC |
233 | { |
234 | DSO *dso = NULL; | |
235 | conf_init_func *ifunc; | |
236 | conf_finish_func *ffunc; | |
237 | char *path = NULL; | |
238 | int errcode = 0; | |
239 | CONF_MODULE *md; | |
240 | /* Look for alternative path in module section */ | |
241 | path = NCONF_get_string(cnf, value, "path"); | |
242 | if (!path) { | |
243 | ERR_clear_error(); | |
244 | path = name; | |
245 | } | |
246 | dso = DSO_load(NULL, path, NULL, 0); | |
247 | if (!dso) { | |
248 | errcode = CONF_R_ERROR_LOADING_DSO; | |
249 | goto err; | |
250 | } | |
251 | ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name); | |
252 | if (!ifunc) { | |
253 | errcode = CONF_R_MISSING_INIT_FUNCTION; | |
254 | goto err; | |
255 | } | |
256 | ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name); | |
257 | /* All OK, add module */ | |
258 | md = module_add(dso, name, ifunc, ffunc); | |
259 | ||
260 | if (!md) | |
261 | goto err; | |
262 | ||
263 | return md; | |
264 | ||
265 | err: | |
efa7dd64 | 266 | DSO_free(dso); |
0f113f3e MC |
267 | CONFerr(CONF_F_MODULE_LOAD_DSO, errcode); |
268 | ERR_add_error_data(4, "module=", name, ", path=", path); | |
269 | return NULL; | |
270 | } | |
bc37d996 DSH |
271 | |
272 | /* add module to list */ | |
cca28b29 | 273 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
274 | conf_init_func *ifunc, conf_finish_func *ffunc) |
275 | { | |
276 | CONF_MODULE *tmod = NULL; | |
277 | if (supported_modules == NULL) | |
278 | supported_modules = sk_CONF_MODULE_new_null(); | |
279 | if (supported_modules == NULL) | |
280 | return NULL; | |
64b25758 | 281 | tmod = OPENSSL_zalloc(sizeof(*tmod)); |
0f113f3e MC |
282 | if (tmod == NULL) |
283 | return NULL; | |
284 | ||
285 | tmod->dso = dso; | |
7644a9ae | 286 | tmod->name = OPENSSL_strdup(name); |
0f113f3e MC |
287 | tmod->init = ifunc; |
288 | tmod->finish = ffunc; | |
0f113f3e MC |
289 | |
290 | if (!sk_CONF_MODULE_push(supported_modules, tmod)) { | |
291 | OPENSSL_free(tmod); | |
292 | return NULL; | |
293 | } | |
294 | ||
295 | return tmod; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Find a module from the list. We allow module names of the form | |
300 | * modname.XXXX to just search for modname to allow the same module to be | |
301 | * initialized more than once. | |
bc37d996 DSH |
302 | */ |
303 | ||
304 | static CONF_MODULE *module_find(char *name) | |
0f113f3e MC |
305 | { |
306 | CONF_MODULE *tmod; | |
307 | int i, nchar; | |
308 | char *p; | |
309 | p = strrchr(name, '.'); | |
bc37d996 | 310 | |
0f113f3e MC |
311 | if (p) |
312 | nchar = p - name; | |
313 | else | |
314 | nchar = strlen(name); | |
bc37d996 | 315 | |
0f113f3e MC |
316 | for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) { |
317 | tmod = sk_CONF_MODULE_value(supported_modules, i); | |
86885c28 | 318 | if (strncmp(tmod->name, name, nchar) == 0) |
0f113f3e MC |
319 | return tmod; |
320 | } | |
bc37d996 | 321 | |
0f113f3e | 322 | return NULL; |
bc37d996 | 323 | |
0f113f3e | 324 | } |
bc37d996 DSH |
325 | |
326 | /* initialize a module */ | |
9dd5ae65 | 327 | static int module_init(CONF_MODULE *pmod, char *name, char *value, |
0f113f3e MC |
328 | const CONF *cnf) |
329 | { | |
330 | int ret = 1; | |
331 | int init_called = 0; | |
332 | CONF_IMODULE *imod = NULL; | |
333 | ||
334 | /* Otherwise add initialized module to list */ | |
b4faea50 | 335 | imod = OPENSSL_malloc(sizeof(*imod)); |
90945fa3 | 336 | if (imod == NULL) |
0f113f3e MC |
337 | goto err; |
338 | ||
339 | imod->pmod = pmod; | |
7644a9ae RS |
340 | imod->name = OPENSSL_strdup(name); |
341 | imod->value = OPENSSL_strdup(value); | |
0f113f3e MC |
342 | imod->usr_data = NULL; |
343 | ||
344 | if (!imod->name || !imod->value) | |
345 | goto memerr; | |
346 | ||
347 | /* Try to initialize module */ | |
348 | if (pmod->init) { | |
349 | ret = pmod->init(imod, cnf); | |
350 | init_called = 1; | |
351 | /* Error occurred, exit */ | |
352 | if (ret <= 0) | |
353 | goto err; | |
354 | } | |
355 | ||
356 | if (initialized_modules == NULL) { | |
357 | initialized_modules = sk_CONF_IMODULE_new_null(); | |
358 | if (!initialized_modules) { | |
359 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
360 | goto err; | |
361 | } | |
362 | } | |
363 | ||
364 | if (!sk_CONF_IMODULE_push(initialized_modules, imod)) { | |
365 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
366 | goto err; | |
367 | } | |
368 | ||
369 | pmod->links++; | |
370 | ||
371 | return ret; | |
372 | ||
373 | err: | |
374 | ||
375 | /* We've started the module so we'd better finish it */ | |
376 | if (pmod->finish && init_called) | |
377 | pmod->finish(imod); | |
378 | ||
379 | memerr: | |
380 | if (imod) { | |
b548a1f1 RS |
381 | OPENSSL_free(imod->name); |
382 | OPENSSL_free(imod->value); | |
0f113f3e MC |
383 | OPENSSL_free(imod); |
384 | } | |
385 | ||
386 | return -1; | |
387 | ||
388 | } | |
389 | ||
390 | /* | |
391 | * Unload any dynamic modules that have a link count of zero: i.e. have no | |
392 | * active initialized modules. If 'all' is set then all modules are unloaded | |
393 | * including static ones. | |
bc37d996 DSH |
394 | */ |
395 | ||
396 | void CONF_modules_unload(int all) | |
0f113f3e MC |
397 | { |
398 | int i; | |
399 | CONF_MODULE *md; | |
400 | CONF_modules_finish(); | |
401 | /* unload modules in reverse order */ | |
402 | for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) { | |
403 | md = sk_CONF_MODULE_value(supported_modules, i); | |
404 | /* If static or in use and 'all' not set ignore it */ | |
405 | if (((md->links > 0) || !md->dso) && !all) | |
406 | continue; | |
407 | /* Since we're working in reverse this is OK */ | |
408 | (void)sk_CONF_MODULE_delete(supported_modules, i); | |
409 | module_free(md); | |
410 | } | |
411 | if (sk_CONF_MODULE_num(supported_modules) == 0) { | |
412 | sk_CONF_MODULE_free(supported_modules); | |
413 | supported_modules = NULL; | |
414 | } | |
415 | } | |
bc37d996 DSH |
416 | |
417 | /* unload a single module */ | |
418 | static void module_free(CONF_MODULE *md) | |
0f113f3e | 419 | { |
efa7dd64 | 420 | DSO_free(md->dso); |
0f113f3e MC |
421 | OPENSSL_free(md->name); |
422 | OPENSSL_free(md); | |
423 | } | |
bc37d996 DSH |
424 | |
425 | /* finish and free up all modules instances */ | |
426 | ||
427 | void CONF_modules_finish(void) | |
0f113f3e MC |
428 | { |
429 | CONF_IMODULE *imod; | |
430 | while (sk_CONF_IMODULE_num(initialized_modules) > 0) { | |
431 | imod = sk_CONF_IMODULE_pop(initialized_modules); | |
432 | module_finish(imod); | |
433 | } | |
434 | sk_CONF_IMODULE_free(initialized_modules); | |
435 | initialized_modules = NULL; | |
436 | } | |
bc37d996 DSH |
437 | |
438 | /* finish a module instance */ | |
439 | ||
440 | static void module_finish(CONF_IMODULE *imod) | |
0f113f3e | 441 | { |
efa7dd64 RS |
442 | if (!imod) |
443 | return; | |
0f113f3e MC |
444 | if (imod->pmod->finish) |
445 | imod->pmod->finish(imod); | |
446 | imod->pmod->links--; | |
447 | OPENSSL_free(imod->name); | |
448 | OPENSSL_free(imod->value); | |
449 | OPENSSL_free(imod); | |
450 | } | |
bc37d996 DSH |
451 | |
452 | /* Add a static module to OpenSSL */ | |
453 | ||
0f113f3e MC |
454 | int CONF_module_add(const char *name, conf_init_func *ifunc, |
455 | conf_finish_func *ffunc) | |
456 | { | |
457 | if (module_add(NULL, name, ifunc, ffunc)) | |
458 | return 1; | |
459 | else | |
460 | return 0; | |
461 | } | |
bc37d996 DSH |
462 | |
463 | void CONF_modules_free(void) | |
0f113f3e MC |
464 | { |
465 | CONF_modules_finish(); | |
466 | CONF_modules_unload(1); | |
467 | } | |
bc37d996 DSH |
468 | |
469 | /* Utility functions */ | |
470 | ||
9dd5ae65 | 471 | const char *CONF_imodule_get_name(const CONF_IMODULE *md) |
0f113f3e MC |
472 | { |
473 | return md->name; | |
474 | } | |
bc37d996 | 475 | |
9dd5ae65 | 476 | const char *CONF_imodule_get_value(const CONF_IMODULE *md) |
0f113f3e MC |
477 | { |
478 | return md->value; | |
479 | } | |
bc37d996 | 480 | |
9dd5ae65 | 481 | void *CONF_imodule_get_usr_data(const CONF_IMODULE *md) |
0f113f3e MC |
482 | { |
483 | return md->usr_data; | |
484 | } | |
bc37d996 DSH |
485 | |
486 | void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data) | |
0f113f3e MC |
487 | { |
488 | md->usr_data = usr_data; | |
489 | } | |
bc37d996 | 490 | |
9dd5ae65 | 491 | CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md) |
0f113f3e MC |
492 | { |
493 | return md->pmod; | |
494 | } | |
bc37d996 | 495 | |
9dd5ae65 | 496 | unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md) |
0f113f3e MC |
497 | { |
498 | return md->flags; | |
499 | } | |
bc37d996 DSH |
500 | |
501 | void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags) | |
0f113f3e MC |
502 | { |
503 | md->flags = flags; | |
504 | } | |
bc37d996 DSH |
505 | |
506 | void *CONF_module_get_usr_data(CONF_MODULE *pmod) | |
0f113f3e MC |
507 | { |
508 | return pmod->usr_data; | |
509 | } | |
bc37d996 DSH |
510 | |
511 | void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data) | |
0f113f3e MC |
512 | { |
513 | pmod->usr_data = usr_data; | |
514 | } | |
bc37d996 | 515 | |
c9501c22 DSH |
516 | /* Return default config file name */ |
517 | ||
518 | char *CONF_get1_default_config_file(void) | |
0f113f3e MC |
519 | { |
520 | char *file; | |
521 | int len; | |
c9501c22 | 522 | |
0f113f3e MC |
523 | file = getenv("OPENSSL_CONF"); |
524 | if (file) | |
7644a9ae | 525 | return OPENSSL_strdup(file); |
c9501c22 | 526 | |
0f113f3e | 527 | len = strlen(X509_get_default_cert_area()); |
c9501c22 | 528 | #ifndef OPENSSL_SYS_VMS |
0f113f3e | 529 | len++; |
c9501c22 | 530 | #endif |
0f113f3e | 531 | len += strlen(OPENSSL_CONF); |
c9501c22 | 532 | |
0f113f3e | 533 | file = OPENSSL_malloc(len + 1); |
c9501c22 | 534 | |
90945fa3 | 535 | if (file == NULL) |
0f113f3e | 536 | return NULL; |
7644a9ae | 537 | OPENSSL_strlcpy(file, X509_get_default_cert_area(), len + 1); |
c9501c22 | 538 | #ifndef OPENSSL_SYS_VMS |
7644a9ae | 539 | OPENSSL_strlcat(file, "/", len + 1); |
c9501c22 | 540 | #endif |
7644a9ae | 541 | OPENSSL_strlcat(file, OPENSSL_CONF, len + 1); |
c9501c22 | 542 | |
0f113f3e MC |
543 | return file; |
544 | } | |
df5eaa8a | 545 | |
0f113f3e MC |
546 | /* |
547 | * This function takes a list separated by 'sep' and calls the callback | |
548 | * function giving the start and length of each member optionally stripping | |
549 | * leading and trailing whitespace. This can be used to parse comma separated | |
550 | * lists for example. | |
df5eaa8a DSH |
551 | */ |
552 | ||
3822740c | 553 | int CONF_parse_list(const char *list_, int sep, int nospc, |
0f113f3e MC |
554 | int (*list_cb) (const char *elem, int len, void *usr), |
555 | void *arg) | |
556 | { | |
557 | int ret; | |
558 | const char *lstart, *tmpend, *p; | |
559 | ||
560 | if (list_ == NULL) { | |
561 | CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | lstart = list_; | |
566 | for (;;) { | |
567 | if (nospc) { | |
568 | while (*lstart && isspace((unsigned char)*lstart)) | |
569 | lstart++; | |
570 | } | |
571 | p = strchr(lstart, sep); | |
572 | if (p == lstart || !*lstart) | |
573 | ret = list_cb(NULL, 0, arg); | |
574 | else { | |
575 | if (p) | |
576 | tmpend = p - 1; | |
577 | else | |
578 | tmpend = lstart + strlen(lstart) - 1; | |
579 | if (nospc) { | |
580 | while (isspace((unsigned char)*tmpend)) | |
581 | tmpend--; | |
582 | } | |
583 | ret = list_cb(lstart, tmpend - lstart + 1, arg); | |
584 | } | |
585 | if (ret <= 0) | |
586 | return ret; | |
587 | if (p == NULL) | |
588 | return 1; | |
589 | lstart = p + 1; | |
590 | } | |
591 | } |