summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/conf/conf_mod.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/conf/conf_mod.c')
-rw-r--r--src/lib/libcrypto/conf/conf_mod.c599
1 files changed, 0 insertions, 599 deletions
diff --git a/src/lib/libcrypto/conf/conf_mod.c b/src/lib/libcrypto/conf/conf_mod.c
deleted file mode 100644
index cb54cc2a87..0000000000
--- a/src/lib/libcrypto/conf/conf_mod.c
+++ /dev/null
@@ -1,599 +0,0 @@
1/* $OpenBSD: conf_mod.c,v 1.26 2015/04/11 16:03:21 deraadt Exp $ */
2/* Written by Stephen Henson (steve@openssl.org) for the OpenSSL
3 * project 2001.
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
13 * notice, this list of conditions and the following disclaimer.
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 <ctype.h>
60#include <stdio.h>
61#include <string.h>
62#include <unistd.h>
63
64#include <openssl/conf.h>
65#include <openssl/crypto.h>
66#include <openssl/dso.h>
67#include <openssl/err.h>
68#include <openssl/x509.h>
69
70#define DSO_mod_init_name "OPENSSL_init"
71#define DSO_mod_finish_name "OPENSSL_finish"
72
73/* This structure contains a data about supported modules.
74 * entries in this table correspond to either dynamic or
75 * static modules.
76 */
77
78struct conf_module_st {
79 /* DSO of this module or NULL if static */
80 DSO *dso;
81 /* Name of the module */
82 char *name;
83 /* Init function */
84 conf_init_func *init;
85 /* Finish function */
86 conf_finish_func *finish;
87 /* Number of successfully initialized modules */
88 int links;
89 void *usr_data;
90};
91
92
93/* This structure contains information about modules that have been
94 * successfully initialized. There may be more than one entry for a
95 * given module.
96 */
97
98struct conf_imodule_st {
99 CONF_MODULE *pmod;
100 char *name;
101 char *value;
102 unsigned long flags;
103 void *usr_data;
104};
105
106static STACK_OF(CONF_MODULE) *supported_modules = NULL;
107static STACK_OF(CONF_IMODULE) *initialized_modules = NULL;
108
109static void module_free(CONF_MODULE *md);
110static void module_finish(CONF_IMODULE *imod);
111static int module_run(const CONF *cnf, char *name, char *value,
112 unsigned long flags);
113static CONF_MODULE *module_add(DSO *dso, const char *name,
114 conf_init_func *ifunc, conf_finish_func *ffunc);
115static CONF_MODULE *module_find(char *name);
116static int module_init(CONF_MODULE *pmod, char *name, char *value,
117 const CONF *cnf);
118static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value,
119 unsigned long flags);
120
121/* Main function: load modules from a CONF structure */
122
123int
124CONF_modules_load(const CONF *cnf, const char *appname, unsigned long flags)
125{
126 STACK_OF(CONF_VALUE) *values;
127 CONF_VALUE *vl;
128 char *vsection = NULL;
129
130 int ret, i;
131
132 if (!cnf)
133 return 1;
134
135 if (appname)
136 vsection = NCONF_get_string(cnf, NULL, appname);
137
138 if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION)))
139 vsection = NCONF_get_string(cnf, NULL, "openssl_conf");
140
141 if (!vsection) {
142 ERR_clear_error();
143 return 1;
144 }
145
146 values = NCONF_get_section(cnf, vsection);
147
148 if (!values)
149 return 0;
150
151 for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
152 vl = sk_CONF_VALUE_value(values, i);
153 ret = module_run(cnf, vl->name, vl->value, flags);
154 if (ret <= 0)
155 if (!(flags & CONF_MFLAGS_IGNORE_ERRORS))
156 return ret;
157 }
158
159 return 1;
160}
161
162int
163CONF_modules_load_file(const char *filename, const char *appname,
164 unsigned long flags)
165{
166 char *file = NULL;
167 CONF *conf = NULL;
168 int ret = 0;
169 conf = NCONF_new(NULL);
170 if (!conf)
171 goto err;
172
173 if (filename == NULL) {
174 file = CONF_get1_default_config_file();
175 if (!file)
176 goto err;
177 } else
178 file = (char *)filename;
179
180 if (NCONF_load(conf, file, NULL) <= 0) {
181 if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) &&
182 (ERR_GET_REASON(ERR_peek_last_error()) ==
183 CONF_R_NO_SUCH_FILE)) {
184 ERR_clear_error();
185 ret = 1;
186 }
187 goto err;
188 }
189
190 ret = CONF_modules_load(conf, appname, flags);
191
192err:
193 if (filename == NULL)
194 free(file);
195 NCONF_free(conf);
196
197 return ret;
198}
199
200static int
201module_run(const CONF *cnf, char *name, char *value, unsigned long flags)
202{
203 CONF_MODULE *md;
204 int ret;
205
206 md = module_find(name);
207
208 /* Module not found: try to load DSO */
209 if (!md && !(flags & CONF_MFLAGS_NO_DSO))
210 md = module_load_dso(cnf, name, value, flags);
211
212 if (!md) {
213 if (!(flags & CONF_MFLAGS_SILENT)) {
214 CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME);
215 ERR_asprintf_error_data("module=%s", name);
216 }
217 return -1;
218 }
219
220 ret = module_init(md, name, value, cnf);
221
222 if (ret <= 0) {
223 if (!(flags & CONF_MFLAGS_SILENT)) {
224 CONFerr(CONF_F_MODULE_RUN,
225 CONF_R_MODULE_INITIALIZATION_ERROR);
226 ERR_asprintf_error_data
227 ("module=%s, value=%s, retcode=%-8d",
228 name, value, ret);
229 }
230 }
231
232 return ret;
233}
234
235/* Load a module from a DSO */
236static CONF_MODULE *
237module_load_dso(const CONF *cnf, char *name, char *value, unsigned long flags)
238{
239 DSO *dso = NULL;
240 conf_init_func *ifunc;
241 conf_finish_func *ffunc;
242 char *path = NULL;
243 int errcode = 0;
244 CONF_MODULE *md;
245
246 /* Look for alternative path in module section */
247 path = NCONF_get_string(cnf, value, "path");
248 if (!path) {
249 ERR_clear_error();
250 path = name;
251 }
252 dso = DSO_load(NULL, path, NULL, 0);
253 if (!dso) {
254 errcode = CONF_R_ERROR_LOADING_DSO;
255 goto err;
256 }
257 ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name);
258 if (!ifunc) {
259 errcode = CONF_R_MISSING_INIT_FUNCTION;
260 goto err;
261 }
262 ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name);
263 /* All OK, add module */
264 md = module_add(dso, name, ifunc, ffunc);
265
266 if (!md)
267 goto err;
268
269 return md;
270
271err:
272 if (dso)
273 DSO_free(dso);
274 CONFerr(CONF_F_MODULE_LOAD_DSO, errcode);
275 ERR_asprintf_error_data("module=%s, path=%s", name, path);
276 return NULL;
277}
278
279/* add module to list */
280static CONF_MODULE *
281module_add(DSO *dso, const char *name, conf_init_func *ifunc,
282 conf_finish_func *ffunc)
283{
284 CONF_MODULE *tmod = NULL;
285
286 if (name == NULL)
287 return NULL;
288 if (supported_modules == NULL)
289 supported_modules = sk_CONF_MODULE_new_null();
290 if (supported_modules == NULL)
291 return NULL;
292 tmod = malloc(sizeof(CONF_MODULE));
293 if (tmod == NULL)
294 return NULL;
295
296 tmod->dso = dso;
297 tmod->name = strdup(name);
298 tmod->init = ifunc;
299 tmod->finish = ffunc;
300 tmod->links = 0;
301
302 if (!sk_CONF_MODULE_push(supported_modules, tmod)) {
303 free(tmod);
304 return NULL;
305 }
306
307 return tmod;
308}
309
310/* Find a module from the list. We allow module names of the
311 * form modname.XXXX to just search for modname to allow the
312 * same module to be initialized more than once.
313 */
314
315static CONF_MODULE *
316module_find(char *name)
317{
318 CONF_MODULE *tmod;
319 int i, nchar;
320 char *p;
321
322 p = strrchr(name, '.');
323
324 if (p)
325 nchar = p - name;
326 else
327 nchar = strlen(name);
328
329 for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) {
330 tmod = sk_CONF_MODULE_value(supported_modules, i);
331 if (!strncmp(tmod->name, name, nchar))
332 return tmod;
333 }
334
335 return NULL;
336}
337
338/* initialize a module */
339static int
340module_init(CONF_MODULE *pmod, char *name, char *value, const CONF *cnf)
341{
342 int ret = 1;
343 int init_called = 0;
344 CONF_IMODULE *imod = NULL;
345
346 /* Otherwise add initialized module to list */
347 imod = malloc(sizeof(CONF_IMODULE));
348 if (!imod)
349 goto err;
350
351 imod->pmod = pmod;
352 imod->name = name ? strdup(name) : NULL;
353 imod->value = value ? strdup(value) : NULL;
354 imod->usr_data = NULL;
355
356 if (!imod->name || !imod->value)
357 goto memerr;
358
359 /* Try to initialize module */
360 if (pmod->init) {
361 ret = pmod->init(imod, cnf);
362 init_called = 1;
363 /* Error occurred, exit */
364 if (ret <= 0)
365 goto err;
366 }
367
368 if (initialized_modules == NULL) {
369 initialized_modules = sk_CONF_IMODULE_new_null();
370 if (!initialized_modules) {
371 CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
372 goto err;
373 }
374 }
375
376 if (!sk_CONF_IMODULE_push(initialized_modules, imod)) {
377 CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
378 goto err;
379 }
380
381 pmod->links++;
382
383 return ret;
384
385err:
386 /* We've started the module so we'd better finish it */
387 if (pmod->finish && init_called)
388 pmod->finish(imod);
389
390memerr:
391 if (imod) {
392 free(imod->name);
393 free(imod->value);
394 free(imod);
395 }
396
397 return -1;
398}
399
400/* Unload any dynamic modules that have a link count of zero:
401 * i.e. have no active initialized modules. If 'all' is set
402 * then all modules are unloaded including static ones.
403 */
404
405void
406CONF_modules_unload(int all)
407{
408 int i;
409 CONF_MODULE *md;
410
411 CONF_modules_finish();
412
413 /* unload modules in reverse order */
414 for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) {
415 md = sk_CONF_MODULE_value(supported_modules, i);
416 /* If static or in use and 'all' not set ignore it */
417 if (((md->links > 0) || !md->dso) && !all)
418 continue;
419 /* Since we're working in reverse this is OK */
420 (void)sk_CONF_MODULE_delete(supported_modules, i);
421 module_free(md);
422 }
423 if (sk_CONF_MODULE_num(supported_modules) == 0) {
424 sk_CONF_MODULE_free(supported_modules);
425 supported_modules = NULL;
426 }
427}
428
429/* unload a single module */
430static void
431module_free(CONF_MODULE *md)
432{
433 if (md->dso)
434 DSO_free(md->dso);
435 free(md->name);
436 free(md);
437}
438
439/* finish and free up all modules instances */
440
441void
442CONF_modules_finish(void)
443{
444 CONF_IMODULE *imod;
445
446 while (sk_CONF_IMODULE_num(initialized_modules) > 0) {
447 imod = sk_CONF_IMODULE_pop(initialized_modules);
448 module_finish(imod);
449 }
450 sk_CONF_IMODULE_free(initialized_modules);
451 initialized_modules = NULL;
452}
453
454/* finish a module instance */
455
456static void
457module_finish(CONF_IMODULE *imod)
458{
459 if (imod->pmod->finish)
460 imod->pmod->finish(imod);
461 imod->pmod->links--;
462 free(imod->name);
463 free(imod->value);
464 free(imod);
465}
466
467/* Add a static module to OpenSSL */
468
469int
470CONF_module_add(const char *name, conf_init_func *ifunc,
471 conf_finish_func *ffunc)
472{
473 if (module_add(NULL, name, ifunc, ffunc))
474 return 1;
475 else
476 return 0;
477}
478
479void
480CONF_modules_free(void)
481{
482 CONF_modules_finish();
483 CONF_modules_unload(1);
484}
485
486/* Utility functions */
487
488const char *
489CONF_imodule_get_name(const CONF_IMODULE *md)
490{
491 return md->name;
492}
493
494const char *
495CONF_imodule_get_value(const CONF_IMODULE *md)
496{
497 return md->value;
498}
499
500void *
501CONF_imodule_get_usr_data(const CONF_IMODULE *md)
502{
503 return md->usr_data;
504}
505
506void
507CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data)
508{
509 md->usr_data = usr_data;
510}
511
512CONF_MODULE *
513CONF_imodule_get_module(const CONF_IMODULE *md)
514{
515 return md->pmod;
516}
517
518unsigned long
519CONF_imodule_get_flags(const CONF_IMODULE *md)
520{
521 return md->flags;
522}
523
524void
525CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags)
526{
527 md->flags = flags;
528}
529
530void *
531CONF_module_get_usr_data(CONF_MODULE *pmod)
532{
533 return pmod->usr_data;
534}
535
536void
537CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data)
538{
539 pmod->usr_data = usr_data;
540}
541
542/* Return default config file name */
543
544char *
545CONF_get1_default_config_file(void)
546{
547 char *file = NULL;
548
549 if (asprintf(&file, "%s/openssl.cnf",
550 X509_get_default_cert_area()) == -1)
551 return (NULL);
552 return file;
553}
554
555/* This function takes a list separated by 'sep' and calls the
556 * callback function giving the start and length of each member
557 * optionally stripping leading and trailing whitespace. This can
558 * be used to parse comma separated lists for example.
559 */
560
561int
562CONF_parse_list(const char *list_, int sep, int nospc,
563 int (*list_cb)(const char *elem, int len, void *usr), void *arg)
564{
565 int ret;
566 const char *lstart, *tmpend, *p;
567
568 if (list_ == NULL) {
569 CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL);
570 return 0;
571 }
572
573 lstart = list_;
574 for (;;) {
575 if (nospc) {
576 while (*lstart && isspace((unsigned char)*lstart))
577 lstart++;
578 }
579 p = strchr(lstart, sep);
580 if (p == lstart || !*lstart)
581 ret = list_cb(NULL, 0, arg);
582 else {
583 if (p)
584 tmpend = p - 1;
585 else
586 tmpend = lstart + strlen(lstart) - 1;
587 if (nospc) {
588 while (isspace((unsigned char)*tmpend))
589 tmpend--;
590 }
591 ret = list_cb(lstart, tmpend - lstart + 1, arg);
592 }
593 if (ret <= 0)
594 return ret;
595 if (p == NULL)
596 return 1;
597 lstart = p + 1;
598 }
599}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-07 20:36:25 +0000