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Commit | Line | Data |
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bc37d996 | 1 | /* conf_mod.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Stephen Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 2001. | |
bc37d996 DSH |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2001 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
bc37d996 DSH |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
57 | * | |
58 | */ | |
59 | ||
60 | #include <stdio.h> | |
df5eaa8a | 61 | #include <ctype.h> |
bc37d996 | 62 | #include <openssl/crypto.h> |
b39fc560 | 63 | #include "internal/cryptlib.h" |
bc37d996 DSH |
64 | #include <openssl/conf.h> |
65 | #include <openssl/dso.h> | |
66 | #include <openssl/x509.h> | |
67 | ||
bc37d996 DSH |
68 | #define DSO_mod_init_name "OPENSSL_init" |
69 | #define DSO_mod_finish_name "OPENSSL_finish" | |
70 | ||
0f113f3e MC |
71 | /* |
72 | * This structure contains a data about supported modules. entries in this | |
73 | * table correspond to either dynamic or static modules. | |
bc37d996 DSH |
74 | */ |
75 | ||
0f113f3e MC |
76 | struct conf_module_st { |
77 | /* DSO of this module or NULL if static */ | |
78 | DSO *dso; | |
79 | /* Name of the module */ | |
80 | char *name; | |
81 | /* Init function */ | |
82 | conf_init_func *init; | |
83 | /* Finish function */ | |
84 | conf_finish_func *finish; | |
85 | /* Number of successfully initialized modules */ | |
86 | int links; | |
87 | void *usr_data; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * This structure contains information about modules that have been | |
92 | * successfully initialized. There may be more than one entry for a given | |
93 | * module. | |
bc37d996 DSH |
94 | */ |
95 | ||
0f113f3e MC |
96 | struct conf_imodule_st { |
97 | CONF_MODULE *pmod; | |
98 | char *name; | |
99 | char *value; | |
100 | unsigned long flags; | |
101 | void *usr_data; | |
102 | }; | |
bc37d996 DSH |
103 | |
104 | static STACK_OF(CONF_MODULE) *supported_modules = NULL; | |
105 | static STACK_OF(CONF_IMODULE) *initialized_modules = NULL; | |
106 | ||
107 | static void module_free(CONF_MODULE *md); | |
108 | static void module_finish(CONF_IMODULE *imod); | |
9dd5ae65 | 109 | static int module_run(const CONF *cnf, char *name, char *value, |
0f113f3e | 110 | unsigned long flags); |
cca28b29 | 111 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
112 | conf_init_func *ifunc, |
113 | conf_finish_func *ffunc); | |
bc37d996 | 114 | static CONF_MODULE *module_find(char *name); |
9dd5ae65 | 115 | static int module_init(CONF_MODULE *pmod, char *name, char *value, |
0f113f3e | 116 | const CONF *cnf); |
9dd5ae65 | 117 | static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value, |
0f113f3e | 118 | unsigned long flags); |
bc37d996 DSH |
119 | |
120 | /* Main function: load modules from a CONF structure */ | |
121 | ||
9dd5ae65 | 122 | int CONF_modules_load(const CONF *cnf, const char *appname, |
0f113f3e MC |
123 | unsigned long flags) |
124 | { | |
125 | STACK_OF(CONF_VALUE) *values; | |
126 | CONF_VALUE *vl; | |
127 | char *vsection = NULL; | |
bc37d996 | 128 | |
0f113f3e | 129 | int ret, i; |
bc37d996 | 130 | |
0f113f3e MC |
131 | if (!cnf) |
132 | return 1; | |
bc37d996 | 133 | |
0f113f3e MC |
134 | if (appname) |
135 | vsection = NCONF_get_string(cnf, NULL, appname); | |
bc37d996 | 136 | |
0f113f3e MC |
137 | if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION))) |
138 | vsection = NCONF_get_string(cnf, NULL, "openssl_conf"); | |
bc37d996 | 139 | |
0f113f3e MC |
140 | if (!vsection) { |
141 | ERR_clear_error(); | |
142 | return 1; | |
143 | } | |
bc37d996 | 144 | |
0f113f3e | 145 | values = NCONF_get_section(cnf, vsection); |
bc37d996 | 146 | |
0f113f3e MC |
147 | if (!values) |
148 | return 0; | |
bc37d996 | 149 | |
0f113f3e MC |
150 | for (i = 0; i < sk_CONF_VALUE_num(values); i++) { |
151 | vl = sk_CONF_VALUE_value(values, i); | |
152 | ret = module_run(cnf, vl->name, vl->value, flags); | |
153 | if (ret <= 0) | |
154 | if (!(flags & CONF_MFLAGS_IGNORE_ERRORS)) | |
155 | return ret; | |
156 | } | |
bc37d996 | 157 | |
0f113f3e | 158 | return 1; |
bc37d996 | 159 | |
0f113f3e | 160 | } |
bc37d996 | 161 | |
9dd5ae65 | 162 | int CONF_modules_load_file(const char *filename, const char *appname, |
0f113f3e MC |
163 | unsigned long flags) |
164 | { | |
165 | char *file = NULL; | |
166 | CONF *conf = NULL; | |
167 | int ret = 0; | |
168 | conf = NCONF_new(NULL); | |
169 | if (!conf) | |
170 | goto err; | |
171 | ||
172 | if (filename == NULL) { | |
173 | file = CONF_get1_default_config_file(); | |
174 | if (!file) | |
175 | goto err; | |
176 | } else | |
177 | file = (char *)filename; | |
178 | ||
179 | if (NCONF_load(conf, file, NULL) <= 0) { | |
180 | if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) && | |
181 | (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE)) { | |
182 | ERR_clear_error(); | |
183 | ret = 1; | |
184 | } | |
185 | goto err; | |
186 | } | |
187 | ||
188 | ret = CONF_modules_load(conf, appname, flags); | |
189 | ||
190 | err: | |
191 | if (filename == NULL) | |
192 | OPENSSL_free(file); | |
193 | NCONF_free(conf); | |
194 | ||
195 | return ret; | |
196 | } | |
bc37d996 | 197 | |
9dd5ae65 | 198 | static int module_run(const CONF *cnf, char *name, char *value, |
0f113f3e MC |
199 | unsigned long flags) |
200 | { | |
201 | CONF_MODULE *md; | |
202 | int ret; | |
203 | ||
204 | md = module_find(name); | |
205 | ||
206 | /* Module not found: try to load DSO */ | |
207 | if (!md && !(flags & CONF_MFLAGS_NO_DSO)) | |
208 | md = module_load_dso(cnf, name, value, flags); | |
209 | ||
210 | if (!md) { | |
211 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
212 | CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME); | |
213 | ERR_add_error_data(2, "module=", name); | |
214 | } | |
215 | return -1; | |
216 | } | |
217 | ||
218 | ret = module_init(md, name, value, cnf); | |
219 | ||
220 | if (ret <= 0) { | |
221 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
222 | char rcode[DECIMAL_SIZE(ret) + 1]; | |
223 | CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR); | |
224 | BIO_snprintf(rcode, sizeof rcode, "%-8d", ret); | |
225 | ERR_add_error_data(6, "module=", name, ", value=", value, | |
226 | ", retcode=", rcode); | |
227 | } | |
228 | } | |
229 | ||
230 | return ret; | |
231 | } | |
bc37d996 DSH |
232 | |
233 | /* Load a module from a DSO */ | |
9dd5ae65 | 234 | static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value, |
0f113f3e MC |
235 | unsigned long flags) |
236 | { | |
237 | DSO *dso = NULL; | |
238 | conf_init_func *ifunc; | |
239 | conf_finish_func *ffunc; | |
240 | char *path = NULL; | |
241 | int errcode = 0; | |
242 | CONF_MODULE *md; | |
243 | /* Look for alternative path in module section */ | |
244 | path = NCONF_get_string(cnf, value, "path"); | |
245 | if (!path) { | |
246 | ERR_clear_error(); | |
247 | path = name; | |
248 | } | |
249 | dso = DSO_load(NULL, path, NULL, 0); | |
250 | if (!dso) { | |
251 | errcode = CONF_R_ERROR_LOADING_DSO; | |
252 | goto err; | |
253 | } | |
254 | ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name); | |
255 | if (!ifunc) { | |
256 | errcode = CONF_R_MISSING_INIT_FUNCTION; | |
257 | goto err; | |
258 | } | |
259 | ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name); | |
260 | /* All OK, add module */ | |
261 | md = module_add(dso, name, ifunc, ffunc); | |
262 | ||
263 | if (!md) | |
264 | goto err; | |
265 | ||
266 | return md; | |
267 | ||
268 | err: | |
efa7dd64 | 269 | DSO_free(dso); |
0f113f3e MC |
270 | CONFerr(CONF_F_MODULE_LOAD_DSO, errcode); |
271 | ERR_add_error_data(4, "module=", name, ", path=", path); | |
272 | return NULL; | |
273 | } | |
bc37d996 DSH |
274 | |
275 | /* add module to list */ | |
cca28b29 | 276 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
277 | conf_init_func *ifunc, conf_finish_func *ffunc) |
278 | { | |
279 | CONF_MODULE *tmod = NULL; | |
280 | if (supported_modules == NULL) | |
281 | supported_modules = sk_CONF_MODULE_new_null(); | |
282 | if (supported_modules == NULL) | |
283 | return NULL; | |
b4faea50 | 284 | tmod = OPENSSL_malloc(sizeof(*tmod)); |
0f113f3e MC |
285 | if (tmod == NULL) |
286 | return NULL; | |
287 | ||
288 | tmod->dso = dso; | |
289 | tmod->name = BUF_strdup(name); | |
290 | tmod->init = ifunc; | |
291 | tmod->finish = ffunc; | |
292 | tmod->links = 0; | |
293 | ||
294 | if (!sk_CONF_MODULE_push(supported_modules, tmod)) { | |
295 | OPENSSL_free(tmod); | |
296 | return NULL; | |
297 | } | |
298 | ||
299 | return tmod; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Find a module from the list. We allow module names of the form | |
304 | * modname.XXXX to just search for modname to allow the same module to be | |
305 | * initialized more than once. | |
bc37d996 DSH |
306 | */ |
307 | ||
308 | static CONF_MODULE *module_find(char *name) | |
0f113f3e MC |
309 | { |
310 | CONF_MODULE *tmod; | |
311 | int i, nchar; | |
312 | char *p; | |
313 | p = strrchr(name, '.'); | |
bc37d996 | 314 | |
0f113f3e MC |
315 | if (p) |
316 | nchar = p - name; | |
317 | else | |
318 | nchar = strlen(name); | |
bc37d996 | 319 | |
0f113f3e MC |
320 | for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) { |
321 | tmod = sk_CONF_MODULE_value(supported_modules, i); | |
86885c28 | 322 | if (strncmp(tmod->name, name, nchar) == 0) |
0f113f3e MC |
323 | return tmod; |
324 | } | |
bc37d996 | 325 | |
0f113f3e | 326 | return NULL; |
bc37d996 | 327 | |
0f113f3e | 328 | } |
bc37d996 DSH |
329 | |
330 | /* initialize a module */ | |
9dd5ae65 | 331 | static int module_init(CONF_MODULE *pmod, char *name, char *value, |
0f113f3e MC |
332 | const CONF *cnf) |
333 | { | |
334 | int ret = 1; | |
335 | int init_called = 0; | |
336 | CONF_IMODULE *imod = NULL; | |
337 | ||
338 | /* Otherwise add initialized module to list */ | |
b4faea50 | 339 | imod = OPENSSL_malloc(sizeof(*imod)); |
0f113f3e MC |
340 | if (!imod) |
341 | goto err; | |
342 | ||
343 | imod->pmod = pmod; | |
344 | imod->name = BUF_strdup(name); | |
345 | imod->value = BUF_strdup(value); | |
346 | imod->usr_data = NULL; | |
347 | ||
348 | if (!imod->name || !imod->value) | |
349 | goto memerr; | |
350 | ||
351 | /* Try to initialize module */ | |
352 | if (pmod->init) { | |
353 | ret = pmod->init(imod, cnf); | |
354 | init_called = 1; | |
355 | /* Error occurred, exit */ | |
356 | if (ret <= 0) | |
357 | goto err; | |
358 | } | |
359 | ||
360 | if (initialized_modules == NULL) { | |
361 | initialized_modules = sk_CONF_IMODULE_new_null(); | |
362 | if (!initialized_modules) { | |
363 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
364 | goto err; | |
365 | } | |
366 | } | |
367 | ||
368 | if (!sk_CONF_IMODULE_push(initialized_modules, imod)) { | |
369 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
370 | goto err; | |
371 | } | |
372 | ||
373 | pmod->links++; | |
374 | ||
375 | return ret; | |
376 | ||
377 | err: | |
378 | ||
379 | /* We've started the module so we'd better finish it */ | |
380 | if (pmod->finish && init_called) | |
381 | pmod->finish(imod); | |
382 | ||
383 | memerr: | |
384 | if (imod) { | |
b548a1f1 RS |
385 | OPENSSL_free(imod->name); |
386 | OPENSSL_free(imod->value); | |
0f113f3e MC |
387 | OPENSSL_free(imod); |
388 | } | |
389 | ||
390 | return -1; | |
391 | ||
392 | } | |
393 | ||
394 | /* | |
395 | * Unload any dynamic modules that have a link count of zero: i.e. have no | |
396 | * active initialized modules. If 'all' is set then all modules are unloaded | |
397 | * including static ones. | |
bc37d996 DSH |
398 | */ |
399 | ||
400 | void CONF_modules_unload(int all) | |
0f113f3e MC |
401 | { |
402 | int i; | |
403 | CONF_MODULE *md; | |
404 | CONF_modules_finish(); | |
405 | /* unload modules in reverse order */ | |
406 | for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) { | |
407 | md = sk_CONF_MODULE_value(supported_modules, i); | |
408 | /* If static or in use and 'all' not set ignore it */ | |
409 | if (((md->links > 0) || !md->dso) && !all) | |
410 | continue; | |
411 | /* Since we're working in reverse this is OK */ | |
412 | (void)sk_CONF_MODULE_delete(supported_modules, i); | |
413 | module_free(md); | |
414 | } | |
415 | if (sk_CONF_MODULE_num(supported_modules) == 0) { | |
416 | sk_CONF_MODULE_free(supported_modules); | |
417 | supported_modules = NULL; | |
418 | } | |
419 | } | |
bc37d996 DSH |
420 | |
421 | /* unload a single module */ | |
422 | static void module_free(CONF_MODULE *md) | |
0f113f3e | 423 | { |
efa7dd64 | 424 | DSO_free(md->dso); |
0f113f3e MC |
425 | OPENSSL_free(md->name); |
426 | OPENSSL_free(md); | |
427 | } | |
bc37d996 DSH |
428 | |
429 | /* finish and free up all modules instances */ | |
430 | ||
431 | void CONF_modules_finish(void) | |
0f113f3e MC |
432 | { |
433 | CONF_IMODULE *imod; | |
434 | while (sk_CONF_IMODULE_num(initialized_modules) > 0) { | |
435 | imod = sk_CONF_IMODULE_pop(initialized_modules); | |
436 | module_finish(imod); | |
437 | } | |
438 | sk_CONF_IMODULE_free(initialized_modules); | |
439 | initialized_modules = NULL; | |
440 | } | |
bc37d996 DSH |
441 | |
442 | /* finish a module instance */ | |
443 | ||
444 | static void module_finish(CONF_IMODULE *imod) | |
0f113f3e | 445 | { |
efa7dd64 RS |
446 | if (!imod) |
447 | return; | |
0f113f3e MC |
448 | if (imod->pmod->finish) |
449 | imod->pmod->finish(imod); | |
450 | imod->pmod->links--; | |
451 | OPENSSL_free(imod->name); | |
452 | OPENSSL_free(imod->value); | |
453 | OPENSSL_free(imod); | |
454 | } | |
bc37d996 DSH |
455 | |
456 | /* Add a static module to OpenSSL */ | |
457 | ||
0f113f3e MC |
458 | int CONF_module_add(const char *name, conf_init_func *ifunc, |
459 | conf_finish_func *ffunc) | |
460 | { | |
461 | if (module_add(NULL, name, ifunc, ffunc)) | |
462 | return 1; | |
463 | else | |
464 | return 0; | |
465 | } | |
bc37d996 DSH |
466 | |
467 | void CONF_modules_free(void) | |
0f113f3e MC |
468 | { |
469 | CONF_modules_finish(); | |
470 | CONF_modules_unload(1); | |
471 | } | |
bc37d996 DSH |
472 | |
473 | /* Utility functions */ | |
474 | ||
9dd5ae65 | 475 | const char *CONF_imodule_get_name(const CONF_IMODULE *md) |
0f113f3e MC |
476 | { |
477 | return md->name; | |
478 | } | |
bc37d996 | 479 | |
9dd5ae65 | 480 | const char *CONF_imodule_get_value(const CONF_IMODULE *md) |
0f113f3e MC |
481 | { |
482 | return md->value; | |
483 | } | |
bc37d996 | 484 | |
9dd5ae65 | 485 | void *CONF_imodule_get_usr_data(const CONF_IMODULE *md) |
0f113f3e MC |
486 | { |
487 | return md->usr_data; | |
488 | } | |
bc37d996 DSH |
489 | |
490 | void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data) | |
0f113f3e MC |
491 | { |
492 | md->usr_data = usr_data; | |
493 | } | |
bc37d996 | 494 | |
9dd5ae65 | 495 | CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md) |
0f113f3e MC |
496 | { |
497 | return md->pmod; | |
498 | } | |
bc37d996 | 499 | |
9dd5ae65 | 500 | unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md) |
0f113f3e MC |
501 | { |
502 | return md->flags; | |
503 | } | |
bc37d996 DSH |
504 | |
505 | void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags) | |
0f113f3e MC |
506 | { |
507 | md->flags = flags; | |
508 | } | |
bc37d996 DSH |
509 | |
510 | void *CONF_module_get_usr_data(CONF_MODULE *pmod) | |
0f113f3e MC |
511 | { |
512 | return pmod->usr_data; | |
513 | } | |
bc37d996 DSH |
514 | |
515 | void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data) | |
0f113f3e MC |
516 | { |
517 | pmod->usr_data = usr_data; | |
518 | } | |
bc37d996 | 519 | |
c9501c22 DSH |
520 | /* Return default config file name */ |
521 | ||
522 | char *CONF_get1_default_config_file(void) | |
0f113f3e MC |
523 | { |
524 | char *file; | |
525 | int len; | |
c9501c22 | 526 | |
0f113f3e MC |
527 | file = getenv("OPENSSL_CONF"); |
528 | if (file) | |
529 | return BUF_strdup(file); | |
c9501c22 | 530 | |
0f113f3e | 531 | len = strlen(X509_get_default_cert_area()); |
c9501c22 | 532 | #ifndef OPENSSL_SYS_VMS |
0f113f3e | 533 | len++; |
c9501c22 | 534 | #endif |
0f113f3e | 535 | len += strlen(OPENSSL_CONF); |
c9501c22 | 536 | |
0f113f3e | 537 | file = OPENSSL_malloc(len + 1); |
c9501c22 | 538 | |
0f113f3e MC |
539 | if (!file) |
540 | return NULL; | |
541 | BUF_strlcpy(file, X509_get_default_cert_area(), len + 1); | |
c9501c22 | 542 | #ifndef OPENSSL_SYS_VMS |
0f113f3e | 543 | BUF_strlcat(file, "/", len + 1); |
c9501c22 | 544 | #endif |
0f113f3e | 545 | BUF_strlcat(file, OPENSSL_CONF, len + 1); |
c9501c22 | 546 | |
0f113f3e MC |
547 | return file; |
548 | } | |
df5eaa8a | 549 | |
0f113f3e MC |
550 | /* |
551 | * This function takes a list separated by 'sep' and calls the callback | |
552 | * function giving the start and length of each member optionally stripping | |
553 | * leading and trailing whitespace. This can be used to parse comma separated | |
554 | * lists for example. | |
df5eaa8a DSH |
555 | */ |
556 | ||
3822740c | 557 | int CONF_parse_list(const char *list_, int sep, int nospc, |
0f113f3e MC |
558 | int (*list_cb) (const char *elem, int len, void *usr), |
559 | void *arg) | |
560 | { | |
561 | int ret; | |
562 | const char *lstart, *tmpend, *p; | |
563 | ||
564 | if (list_ == NULL) { | |
565 | CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL); | |
566 | return 0; | |
567 | } | |
568 | ||
569 | lstart = list_; | |
570 | for (;;) { | |
571 | if (nospc) { | |
572 | while (*lstart && isspace((unsigned char)*lstart)) | |
573 | lstart++; | |
574 | } | |
575 | p = strchr(lstart, sep); | |
576 | if (p == lstart || !*lstart) | |
577 | ret = list_cb(NULL, 0, arg); | |
578 | else { | |
579 | if (p) | |
580 | tmpend = p - 1; | |
581 | else | |
582 | tmpend = lstart + strlen(lstart) - 1; | |
583 | if (nospc) { | |
584 | while (isspace((unsigned char)*tmpend)) | |
585 | tmpend--; | |
586 | } | |
587 | ret = list_cb(lstart, tmpend - lstart + 1, arg); | |
588 | } | |
589 | if (ret <= 0) | |
590 | return ret; | |
591 | if (p == NULL) | |
592 | return 1; | |
593 | lstart = p + 1; | |
594 | } | |
595 | } |