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Commit | Line | Data |
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0f113f3e | 1 | /* |
22e27978 | 2 | * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved. |
bc37d996 | 3 | * |
2044d382 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
bc37d996 DSH |
8 | */ |
9 | ||
e4468e6d P |
10 | /* We need to use some engine deprecated APIs */ |
11 | #define OPENSSL_SUPPRESS_DEPRECATED | |
12 | ||
07016a8a | 13 | #include "internal/cryptlib.h" |
bc37d996 | 14 | #include <stdio.h> |
df5eaa8a | 15 | #include <ctype.h> |
bc37d996 | 16 | #include <openssl/crypto.h> |
cbf6959f | 17 | #include "internal/conf.h" |
921de151 | 18 | #include "internal/dso.h" |
22e27978 | 19 | #include "internal/thread_once.h" |
bc37d996 | 20 | #include <openssl/x509.h> |
0196ad63 | 21 | #include <openssl/trace.h> |
22e27978 | 22 | #include <openssl/engine.h> |
bc37d996 | 23 | |
852c2ed2 RS |
24 | DEFINE_STACK_OF(CONF_MODULE) |
25 | DEFINE_STACK_OF(CONF_IMODULE) | |
26 | ||
bc37d996 DSH |
27 | #define DSO_mod_init_name "OPENSSL_init" |
28 | #define DSO_mod_finish_name "OPENSSL_finish" | |
29 | ||
0f113f3e MC |
30 | /* |
31 | * This structure contains a data about supported modules. entries in this | |
32 | * table correspond to either dynamic or static modules. | |
bc37d996 DSH |
33 | */ |
34 | ||
0f113f3e MC |
35 | struct conf_module_st { |
36 | /* DSO of this module or NULL if static */ | |
37 | DSO *dso; | |
38 | /* Name of the module */ | |
39 | char *name; | |
40 | /* Init function */ | |
41 | conf_init_func *init; | |
42 | /* Finish function */ | |
43 | conf_finish_func *finish; | |
44 | /* Number of successfully initialized modules */ | |
45 | int links; | |
46 | void *usr_data; | |
47 | }; | |
48 | ||
49 | /* | |
50 | * This structure contains information about modules that have been | |
51 | * successfully initialized. There may be more than one entry for a given | |
52 | * module. | |
bc37d996 DSH |
53 | */ |
54 | ||
0f113f3e MC |
55 | struct conf_imodule_st { |
56 | CONF_MODULE *pmod; | |
57 | char *name; | |
58 | char *value; | |
59 | unsigned long flags; | |
60 | void *usr_data; | |
61 | }; | |
bc37d996 DSH |
62 | |
63 | static STACK_OF(CONF_MODULE) *supported_modules = NULL; | |
64 | static STACK_OF(CONF_IMODULE) *initialized_modules = NULL; | |
65 | ||
22e27978 SL |
66 | static CRYPTO_ONCE load_builtin_modules = CRYPTO_ONCE_STATIC_INIT; |
67 | ||
bc37d996 DSH |
68 | static void module_free(CONF_MODULE *md); |
69 | static void module_finish(CONF_IMODULE *imod); | |
159b9a4d | 70 | static int module_run(const CONF *cnf, const char *name, const char *value, |
0f113f3e | 71 | unsigned long flags); |
cca28b29 | 72 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
73 | conf_init_func *ifunc, |
74 | conf_finish_func *ffunc); | |
159b9a4d F |
75 | static CONF_MODULE *module_find(const char *name); |
76 | static int module_init(CONF_MODULE *pmod, const char *name, const char *value, | |
0f113f3e | 77 | const CONF *cnf); |
02e112a8 | 78 | static CONF_MODULE *module_load_dso(const CONF *cnf, const char *name, |
159b9a4d | 79 | const char *value); |
bc37d996 | 80 | |
33855c0a P |
81 | static int conf_diagnostics(const CONF *cnf) |
82 | { | |
83 | long int lflag = 0; | |
84 | int res; | |
85 | ||
86 | ERR_set_mark(); | |
87 | res = NCONF_get_number(cnf, NULL, "config_diagnostics", &lflag) | |
88 | && lflag != 0; | |
89 | ERR_pop_to_mark(); | |
90 | return res; | |
91 | } | |
92 | ||
bc37d996 DSH |
93 | /* Main function: load modules from a CONF structure */ |
94 | ||
9dd5ae65 | 95 | int CONF_modules_load(const CONF *cnf, const char *appname, |
0f113f3e MC |
96 | unsigned long flags) |
97 | { | |
98 | STACK_OF(CONF_VALUE) *values; | |
99 | CONF_VALUE *vl; | |
100 | char *vsection = NULL; | |
0f113f3e | 101 | int ret, i; |
bc37d996 | 102 | |
0f113f3e MC |
103 | if (!cnf) |
104 | return 1; | |
bc37d996 | 105 | |
33855c0a P |
106 | if (conf_diagnostics(cnf)) |
107 | flags &= ~(CONF_MFLAGS_IGNORE_ERRORS | |
108 | | CONF_MFLAGS_IGNORE_RETURN_CODES | |
109 | | CONF_MFLAGS_SILENT | |
110 | | CONF_MFLAGS_IGNORE_MISSING_FILE); | |
111 | ||
0f113f3e MC |
112 | if (appname) |
113 | vsection = NCONF_get_string(cnf, NULL, appname); | |
bc37d996 | 114 | |
0f113f3e MC |
115 | if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION))) |
116 | vsection = NCONF_get_string(cnf, NULL, "openssl_conf"); | |
bc37d996 | 117 | |
0f113f3e MC |
118 | if (!vsection) { |
119 | ERR_clear_error(); | |
120 | return 1; | |
121 | } | |
bc37d996 | 122 | |
0196ad63 | 123 | OSSL_TRACE1(CONF, "Configuration in section %s\n", vsection); |
0f113f3e | 124 | values = NCONF_get_section(cnf, vsection); |
bc37d996 | 125 | |
33b4f731 P |
126 | if (values == NULL) { |
127 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
128 | CONFerr(0, CONF_R_OPENSSL_CONF_REFERENCES_MISSING_SECTION); | |
129 | ERR_add_error_data(2, "openssl_conf=", vsection); | |
130 | } | |
0f113f3e | 131 | return 0; |
33b4f731 | 132 | } |
bc37d996 | 133 | |
0f113f3e MC |
134 | for (i = 0; i < sk_CONF_VALUE_num(values); i++) { |
135 | vl = sk_CONF_VALUE_value(values, i); | |
136 | ret = module_run(cnf, vl->name, vl->value, flags); | |
0196ad63 RL |
137 | OSSL_TRACE3(CONF, "Running module %s (%s) returned %d\n", |
138 | vl->name, vl->value, ret); | |
0f113f3e MC |
139 | if (ret <= 0) |
140 | if (!(flags & CONF_MFLAGS_IGNORE_ERRORS)) | |
141 | return ret; | |
142 | } | |
bc37d996 | 143 | |
0f113f3e | 144 | return 1; |
bc37d996 | 145 | |
0f113f3e | 146 | } |
bc37d996 | 147 | |
d8652be0 MC |
148 | int CONF_modules_load_file_ex(OPENSSL_CTX *libctx, const char *filename, |
149 | const char *appname, unsigned long flags) | |
0f113f3e MC |
150 | { |
151 | char *file = NULL; | |
152 | CONF *conf = NULL; | |
33855c0a | 153 | int ret = 0, diagnostics = 0; |
22e27978 | 154 | |
d8652be0 | 155 | conf = NCONF_new_ex(libctx, NULL); |
90945fa3 | 156 | if (conf == NULL) |
0f113f3e MC |
157 | goto err; |
158 | ||
159 | if (filename == NULL) { | |
160 | file = CONF_get1_default_config_file(); | |
22e27978 | 161 | if (file == NULL) |
0f113f3e | 162 | goto err; |
22e27978 | 163 | } else { |
0f113f3e | 164 | file = (char *)filename; |
22e27978 | 165 | } |
0f113f3e MC |
166 | |
167 | if (NCONF_load(conf, file, NULL) <= 0) { | |
168 | if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) && | |
169 | (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE)) { | |
170 | ERR_clear_error(); | |
171 | ret = 1; | |
172 | } | |
173 | goto err; | |
174 | } | |
175 | ||
176 | ret = CONF_modules_load(conf, appname, flags); | |
33855c0a | 177 | diagnostics = conf_diagnostics(conf); |
0f113f3e MC |
178 | |
179 | err: | |
180 | if (filename == NULL) | |
181 | OPENSSL_free(file); | |
182 | NCONF_free(conf); | |
183 | ||
33855c0a | 184 | if ((flags & CONF_MFLAGS_IGNORE_RETURN_CODES) != 0 && !diagnostics) |
df1f538f VD |
185 | return 1; |
186 | ||
0f113f3e MC |
187 | return ret; |
188 | } | |
bc37d996 | 189 | |
22e27978 SL |
190 | int CONF_modules_load_file(const char *filename, |
191 | const char *appname, unsigned long flags) | |
192 | { | |
d8652be0 | 193 | return CONF_modules_load_file_ex(NULL, filename, appname, flags); |
22e27978 SL |
194 | } |
195 | ||
196 | DEFINE_RUN_ONCE_STATIC(do_load_builtin_modules) | |
197 | { | |
198 | OPENSSL_load_builtin_modules(); | |
199 | #ifndef OPENSSL_NO_ENGINE | |
200 | /* Need to load ENGINEs */ | |
201 | ENGINE_load_builtin_engines(); | |
202 | #endif | |
203 | ERR_clear_error(); | |
204 | return 1; | |
205 | } | |
206 | ||
159b9a4d | 207 | static int module_run(const CONF *cnf, const char *name, const char *value, |
0f113f3e MC |
208 | unsigned long flags) |
209 | { | |
210 | CONF_MODULE *md; | |
211 | int ret; | |
212 | ||
22e27978 SL |
213 | if (!RUN_ONCE(&load_builtin_modules, do_load_builtin_modules)) |
214 | return -1; | |
215 | ||
0f113f3e MC |
216 | md = module_find(name); |
217 | ||
218 | /* Module not found: try to load DSO */ | |
219 | if (!md && !(flags & CONF_MFLAGS_NO_DSO)) | |
a773b52a | 220 | md = module_load_dso(cnf, name, value); |
0f113f3e MC |
221 | |
222 | if (!md) { | |
223 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
224 | CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME); | |
225 | ERR_add_error_data(2, "module=", name); | |
226 | } | |
227 | return -1; | |
228 | } | |
229 | ||
230 | ret = module_init(md, name, value, cnf); | |
231 | ||
232 | if (ret <= 0) { | |
233 | if (!(flags & CONF_MFLAGS_SILENT)) { | |
234 | char rcode[DECIMAL_SIZE(ret) + 1]; | |
a2371fa9 | 235 | |
0f113f3e | 236 | CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR); |
a2371fa9 | 237 | BIO_snprintf(rcode, sizeof(rcode), "%-8d", ret); |
0f113f3e MC |
238 | ERR_add_error_data(6, "module=", name, ", value=", value, |
239 | ", retcode=", rcode); | |
240 | } | |
241 | } | |
242 | ||
243 | return ret; | |
244 | } | |
bc37d996 DSH |
245 | |
246 | /* Load a module from a DSO */ | |
02e112a8 | 247 | static CONF_MODULE *module_load_dso(const CONF *cnf, |
159b9a4d | 248 | const char *name, const char *value) |
0f113f3e MC |
249 | { |
250 | DSO *dso = NULL; | |
251 | conf_init_func *ifunc; | |
252 | conf_finish_func *ffunc; | |
159b9a4d | 253 | const char *path = NULL; |
0f113f3e MC |
254 | int errcode = 0; |
255 | CONF_MODULE *md; | |
12a765a5 | 256 | |
0f113f3e MC |
257 | /* Look for alternative path in module section */ |
258 | path = NCONF_get_string(cnf, value, "path"); | |
12a765a5 | 259 | if (path == NULL) { |
0f113f3e MC |
260 | ERR_clear_error(); |
261 | path = name; | |
262 | } | |
263 | dso = DSO_load(NULL, path, NULL, 0); | |
12a765a5 | 264 | if (dso == NULL) { |
0f113f3e MC |
265 | errcode = CONF_R_ERROR_LOADING_DSO; |
266 | goto err; | |
267 | } | |
268 | ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name); | |
12a765a5 | 269 | if (ifunc == NULL) { |
0f113f3e MC |
270 | errcode = CONF_R_MISSING_INIT_FUNCTION; |
271 | goto err; | |
272 | } | |
273 | ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name); | |
274 | /* All OK, add module */ | |
275 | md = module_add(dso, name, ifunc, ffunc); | |
276 | ||
12a765a5 | 277 | if (md == NULL) |
0f113f3e MC |
278 | goto err; |
279 | ||
280 | return md; | |
281 | ||
282 | err: | |
efa7dd64 | 283 | DSO_free(dso); |
0f113f3e MC |
284 | CONFerr(CONF_F_MODULE_LOAD_DSO, errcode); |
285 | ERR_add_error_data(4, "module=", name, ", path=", path); | |
286 | return NULL; | |
287 | } | |
bc37d996 DSH |
288 | |
289 | /* add module to list */ | |
cca28b29 | 290 | static CONF_MODULE *module_add(DSO *dso, const char *name, |
0f113f3e MC |
291 | conf_init_func *ifunc, conf_finish_func *ffunc) |
292 | { | |
293 | CONF_MODULE *tmod = NULL; | |
294 | if (supported_modules == NULL) | |
295 | supported_modules = sk_CONF_MODULE_new_null(); | |
296 | if (supported_modules == NULL) | |
297 | return NULL; | |
cdb10bae RS |
298 | if ((tmod = OPENSSL_zalloc(sizeof(*tmod))) == NULL) { |
299 | CONFerr(CONF_F_MODULE_ADD, ERR_R_MALLOC_FAILURE); | |
0f113f3e | 300 | return NULL; |
cdb10bae | 301 | } |
0f113f3e MC |
302 | |
303 | tmod->dso = dso; | |
7644a9ae | 304 | tmod->name = OPENSSL_strdup(name); |
0f113f3e MC |
305 | tmod->init = ifunc; |
306 | tmod->finish = ffunc; | |
b7b8e948 DM |
307 | if (tmod->name == NULL) { |
308 | OPENSSL_free(tmod); | |
309 | return NULL; | |
310 | } | |
0f113f3e MC |
311 | |
312 | if (!sk_CONF_MODULE_push(supported_modules, tmod)) { | |
b7b8e948 | 313 | OPENSSL_free(tmod->name); |
0f113f3e MC |
314 | OPENSSL_free(tmod); |
315 | return NULL; | |
316 | } | |
317 | ||
318 | return tmod; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Find a module from the list. We allow module names of the form | |
323 | * modname.XXXX to just search for modname to allow the same module to be | |
324 | * initialized more than once. | |
bc37d996 DSH |
325 | */ |
326 | ||
159b9a4d | 327 | static CONF_MODULE *module_find(const char *name) |
0f113f3e MC |
328 | { |
329 | CONF_MODULE *tmod; | |
330 | int i, nchar; | |
331 | char *p; | |
332 | p = strrchr(name, '.'); | |
bc37d996 | 333 | |
0f113f3e MC |
334 | if (p) |
335 | nchar = p - name; | |
336 | else | |
337 | nchar = strlen(name); | |
bc37d996 | 338 | |
0f113f3e MC |
339 | for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) { |
340 | tmod = sk_CONF_MODULE_value(supported_modules, i); | |
86885c28 | 341 | if (strncmp(tmod->name, name, nchar) == 0) |
0f113f3e MC |
342 | return tmod; |
343 | } | |
bc37d996 | 344 | |
0f113f3e | 345 | return NULL; |
bc37d996 | 346 | |
0f113f3e | 347 | } |
bc37d996 DSH |
348 | |
349 | /* initialize a module */ | |
159b9a4d | 350 | static int module_init(CONF_MODULE *pmod, const char *name, const char *value, |
0f113f3e MC |
351 | const CONF *cnf) |
352 | { | |
353 | int ret = 1; | |
354 | int init_called = 0; | |
355 | CONF_IMODULE *imod = NULL; | |
356 | ||
357 | /* Otherwise add initialized module to list */ | |
b4faea50 | 358 | imod = OPENSSL_malloc(sizeof(*imod)); |
90945fa3 | 359 | if (imod == NULL) |
0f113f3e MC |
360 | goto err; |
361 | ||
362 | imod->pmod = pmod; | |
7644a9ae RS |
363 | imod->name = OPENSSL_strdup(name); |
364 | imod->value = OPENSSL_strdup(value); | |
0f113f3e MC |
365 | imod->usr_data = NULL; |
366 | ||
367 | if (!imod->name || !imod->value) | |
368 | goto memerr; | |
369 | ||
370 | /* Try to initialize module */ | |
371 | if (pmod->init) { | |
372 | ret = pmod->init(imod, cnf); | |
373 | init_called = 1; | |
374 | /* Error occurred, exit */ | |
375 | if (ret <= 0) | |
376 | goto err; | |
377 | } | |
378 | ||
379 | if (initialized_modules == NULL) { | |
380 | initialized_modules = sk_CONF_IMODULE_new_null(); | |
381 | if (!initialized_modules) { | |
382 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
383 | goto err; | |
384 | } | |
385 | } | |
386 | ||
387 | if (!sk_CONF_IMODULE_push(initialized_modules, imod)) { | |
388 | CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); | |
389 | goto err; | |
390 | } | |
391 | ||
392 | pmod->links++; | |
393 | ||
394 | return ret; | |
395 | ||
396 | err: | |
397 | ||
398 | /* We've started the module so we'd better finish it */ | |
399 | if (pmod->finish && init_called) | |
400 | pmod->finish(imod); | |
401 | ||
402 | memerr: | |
403 | if (imod) { | |
b548a1f1 RS |
404 | OPENSSL_free(imod->name); |
405 | OPENSSL_free(imod->value); | |
0f113f3e MC |
406 | OPENSSL_free(imod); |
407 | } | |
408 | ||
409 | return -1; | |
410 | ||
411 | } | |
412 | ||
413 | /* | |
414 | * Unload any dynamic modules that have a link count of zero: i.e. have no | |
415 | * active initialized modules. If 'all' is set then all modules are unloaded | |
416 | * including static ones. | |
bc37d996 DSH |
417 | */ |
418 | ||
419 | void CONF_modules_unload(int all) | |
0f113f3e MC |
420 | { |
421 | int i; | |
422 | CONF_MODULE *md; | |
423 | CONF_modules_finish(); | |
424 | /* unload modules in reverse order */ | |
425 | for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) { | |
426 | md = sk_CONF_MODULE_value(supported_modules, i); | |
427 | /* If static or in use and 'all' not set ignore it */ | |
428 | if (((md->links > 0) || !md->dso) && !all) | |
429 | continue; | |
430 | /* Since we're working in reverse this is OK */ | |
431 | (void)sk_CONF_MODULE_delete(supported_modules, i); | |
432 | module_free(md); | |
433 | } | |
434 | if (sk_CONF_MODULE_num(supported_modules) == 0) { | |
435 | sk_CONF_MODULE_free(supported_modules); | |
436 | supported_modules = NULL; | |
437 | } | |
438 | } | |
bc37d996 DSH |
439 | |
440 | /* unload a single module */ | |
441 | static void module_free(CONF_MODULE *md) | |
0f113f3e | 442 | { |
efa7dd64 | 443 | DSO_free(md->dso); |
0f113f3e MC |
444 | OPENSSL_free(md->name); |
445 | OPENSSL_free(md); | |
446 | } | |
bc37d996 DSH |
447 | |
448 | /* finish and free up all modules instances */ | |
449 | ||
450 | void CONF_modules_finish(void) | |
0f113f3e MC |
451 | { |
452 | CONF_IMODULE *imod; | |
453 | while (sk_CONF_IMODULE_num(initialized_modules) > 0) { | |
454 | imod = sk_CONF_IMODULE_pop(initialized_modules); | |
455 | module_finish(imod); | |
456 | } | |
457 | sk_CONF_IMODULE_free(initialized_modules); | |
458 | initialized_modules = NULL; | |
459 | } | |
bc37d996 DSH |
460 | |
461 | /* finish a module instance */ | |
462 | ||
463 | static void module_finish(CONF_IMODULE *imod) | |
0f113f3e | 464 | { |
efa7dd64 RS |
465 | if (!imod) |
466 | return; | |
0f113f3e MC |
467 | if (imod->pmod->finish) |
468 | imod->pmod->finish(imod); | |
469 | imod->pmod->links--; | |
470 | OPENSSL_free(imod->name); | |
471 | OPENSSL_free(imod->value); | |
472 | OPENSSL_free(imod); | |
473 | } | |
bc37d996 DSH |
474 | |
475 | /* Add a static module to OpenSSL */ | |
476 | ||
0f113f3e MC |
477 | int CONF_module_add(const char *name, conf_init_func *ifunc, |
478 | conf_finish_func *ffunc) | |
479 | { | |
480 | if (module_add(NULL, name, ifunc, ffunc)) | |
481 | return 1; | |
482 | else | |
483 | return 0; | |
484 | } | |
bc37d996 | 485 | |
b3599dbb | 486 | void conf_modules_free_int(void) |
0f113f3e MC |
487 | { |
488 | CONF_modules_finish(); | |
489 | CONF_modules_unload(1); | |
490 | } | |
bc37d996 DSH |
491 | |
492 | /* Utility functions */ | |
493 | ||
9dd5ae65 | 494 | const char *CONF_imodule_get_name(const CONF_IMODULE *md) |
0f113f3e MC |
495 | { |
496 | return md->name; | |
497 | } | |
bc37d996 | 498 | |
9dd5ae65 | 499 | const char *CONF_imodule_get_value(const CONF_IMODULE *md) |
0f113f3e MC |
500 | { |
501 | return md->value; | |
502 | } | |
bc37d996 | 503 | |
9dd5ae65 | 504 | void *CONF_imodule_get_usr_data(const CONF_IMODULE *md) |
0f113f3e MC |
505 | { |
506 | return md->usr_data; | |
507 | } | |
bc37d996 DSH |
508 | |
509 | void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data) | |
0f113f3e MC |
510 | { |
511 | md->usr_data = usr_data; | |
512 | } | |
bc37d996 | 513 | |
9dd5ae65 | 514 | CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md) |
0f113f3e MC |
515 | { |
516 | return md->pmod; | |
517 | } | |
bc37d996 | 518 | |
9dd5ae65 | 519 | unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md) |
0f113f3e MC |
520 | { |
521 | return md->flags; | |
522 | } | |
bc37d996 DSH |
523 | |
524 | void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags) | |
0f113f3e MC |
525 | { |
526 | md->flags = flags; | |
527 | } | |
bc37d996 DSH |
528 | |
529 | void *CONF_module_get_usr_data(CONF_MODULE *pmod) | |
0f113f3e MC |
530 | { |
531 | return pmod->usr_data; | |
532 | } | |
bc37d996 DSH |
533 | |
534 | void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data) | |
0f113f3e MC |
535 | { |
536 | pmod->usr_data = usr_data; | |
537 | } | |
bc37d996 | 538 | |
c9501c22 DSH |
539 | /* Return default config file name */ |
540 | ||
541 | char *CONF_get1_default_config_file(void) | |
0f113f3e | 542 | { |
e306f83c | 543 | const char *t; |
a2371fa9 | 544 | char *file, *sep = ""; |
e306f83c | 545 | size_t size; |
c9501c22 | 546 | |
5c39a55d P |
547 | if ((file = ossl_safe_getenv("OPENSSL_CONF")) != NULL) |
548 | return OPENSSL_strdup(file); | |
c9501c22 | 549 | |
e306f83c | 550 | t = X509_get_default_cert_area(); |
c9501c22 | 551 | #ifndef OPENSSL_SYS_VMS |
a2371fa9 | 552 | sep = "/"; |
c9501c22 | 553 | #endif |
e306f83c RL |
554 | size = strlen(t) + strlen(sep) + strlen(OPENSSL_CONF) + 1; |
555 | file = OPENSSL_malloc(size); | |
c9501c22 | 556 | |
90945fa3 | 557 | if (file == NULL) |
0f113f3e | 558 | return NULL; |
e306f83c | 559 | BIO_snprintf(file, size, "%s%s%s", t, sep, OPENSSL_CONF); |
c9501c22 | 560 | |
0f113f3e MC |
561 | return file; |
562 | } | |
df5eaa8a | 563 | |
0f113f3e MC |
564 | /* |
565 | * This function takes a list separated by 'sep' and calls the callback | |
566 | * function giving the start and length of each member optionally stripping | |
567 | * leading and trailing whitespace. This can be used to parse comma separated | |
568 | * lists for example. | |
df5eaa8a DSH |
569 | */ |
570 | ||
3822740c | 571 | int CONF_parse_list(const char *list_, int sep, int nospc, |
0f113f3e MC |
572 | int (*list_cb) (const char *elem, int len, void *usr), |
573 | void *arg) | |
574 | { | |
575 | int ret; | |
576 | const char *lstart, *tmpend, *p; | |
577 | ||
578 | if (list_ == NULL) { | |
579 | CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | lstart = list_; | |
584 | for (;;) { | |
585 | if (nospc) { | |
586 | while (*lstart && isspace((unsigned char)*lstart)) | |
587 | lstart++; | |
588 | } | |
589 | p = strchr(lstart, sep); | |
12a765a5 | 590 | if (p == lstart || *lstart == '\0') |
0f113f3e MC |
591 | ret = list_cb(NULL, 0, arg); |
592 | else { | |
593 | if (p) | |
594 | tmpend = p - 1; | |
595 | else | |
596 | tmpend = lstart + strlen(lstart) - 1; | |
597 | if (nospc) { | |
598 | while (isspace((unsigned char)*tmpend)) | |
599 | tmpend--; | |
600 | } | |
601 | ret = list_cb(lstart, tmpend - lstart + 1, arg); | |
602 | } | |
603 | if (ret <= 0) | |
604 | return ret; | |
605 | if (p == NULL) | |
606 | return 1; | |
607 | lstart = p + 1; | |
608 | } | |
609 | } |