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-rw-r--r--src/lib/libcrypto/x509/x509_vfy.c920
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diff --git a/src/lib/libcrypto/x509/x509_vfy.c b/src/lib/libcrypto/x509/x509_vfy.c
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1/* crypto/x509/x509_vfy.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include <time.h>
61#include <errno.h>
62
63#include "cryptlib.h"
64#include <openssl/crypto.h>
65#include <openssl/lhash.h>
66#include <openssl/buffer.h>
67#include <openssl/evp.h>
68#include <openssl/asn1.h>
69#include <openssl/x509.h>
70#include <openssl/x509v3.h>
71#include <openssl/objects.h>
72
73static int null_callback(int ok,X509_STORE_CTX *e);
74static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
75static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
76static int check_chain_purpose(X509_STORE_CTX *ctx);
77static int check_trust(X509_STORE_CTX *ctx);
78static int internal_verify(X509_STORE_CTX *ctx);
79const char *X509_version="X.509" OPENSSL_VERSION_PTEXT;
80
81static STACK_OF(CRYPTO_EX_DATA_FUNCS) *x509_store_ctx_method=NULL;
82static int x509_store_ctx_num=0;
83#if 0
84static int x509_store_num=1;
85static STACK *x509_store_method=NULL;
86#endif
87
88static int null_callback(int ok, X509_STORE_CTX *e)
89 {
90 return ok;
91 }
92
93#if 0
94static int x509_subject_cmp(X509 **a, X509 **b)
95 {
96 return X509_subject_name_cmp(*a,*b);
97 }
98#endif
99
100int X509_verify_cert(X509_STORE_CTX *ctx)
101 {
102 X509 *x,*xtmp,*chain_ss=NULL;
103 X509_NAME *xn;
104 int depth,i,ok=0;
105 int num;
106 int (*cb)();
107 STACK_OF(X509) *sktmp=NULL;
108
109 if (ctx->cert == NULL)
110 {
111 X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
112 return -1;
113 }
114
115 cb=ctx->verify_cb;
116 if (cb == NULL) cb=null_callback;
117
118 /* first we make sure the chain we are going to build is
119 * present and that the first entry is in place */
120 if (ctx->chain == NULL)
121 {
122 if ( ((ctx->chain=sk_X509_new_null()) == NULL) ||
123 (!sk_X509_push(ctx->chain,ctx->cert)))
124 {
125 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
126 goto end;
127 }
128 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
129 ctx->last_untrusted=1;
130 }
131
132 /* We use a temporary STACK so we can chop and hack at it */
133 if (ctx->untrusted != NULL
134 && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
135 {
136 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
137 goto end;
138 }
139
140 num=sk_X509_num(ctx->chain);
141 x=sk_X509_value(ctx->chain,num-1);
142 depth=ctx->depth;
143
144
145 for (;;)
146 {
147 /* If we have enough, we break */
148 if (depth < num) break; /* FIXME: If this happens, we should take
149 * note of it and, if appropriate, use the
150 * X509_V_ERR_CERT_CHAIN_TOO_LONG error
151 * code later.
152 */
153
154 /* If we are self signed, we break */
155 xn=X509_get_issuer_name(x);
156 if (ctx->check_issued(ctx, x,x)) break;
157
158 /* If we were passed a cert chain, use it first */
159 if (ctx->untrusted != NULL)
160 {
161 xtmp=find_issuer(ctx, sktmp,x);
162 if (xtmp != NULL)
163 {
164 if (!sk_X509_push(ctx->chain,xtmp))
165 {
166 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
167 goto end;
168 }
169 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
170 sk_X509_delete_ptr(sktmp,xtmp);
171 ctx->last_untrusted++;
172 x=xtmp;
173 num++;
174 /* reparse the full chain for
175 * the next one */
176 continue;
177 }
178 }
179 break;
180 }
181
182 /* at this point, chain should contain a list of untrusted
183 * certificates. We now need to add at least one trusted one,
184 * if possible, otherwise we complain. */
185
186 /* Examine last certificate in chain and see if it
187 * is self signed.
188 */
189
190 i=sk_X509_num(ctx->chain);
191 x=sk_X509_value(ctx->chain,i-1);
192 xn = X509_get_subject_name(x);
193 if (ctx->check_issued(ctx, x, x))
194 {
195 /* we have a self signed certificate */
196 if (sk_X509_num(ctx->chain) == 1)
197 {
198 /* We have a single self signed certificate: see if
199 * we can find it in the store. We must have an exact
200 * match to avoid possible impersonation.
201 */
202 ok = ctx->get_issuer(&xtmp, ctx, x);
203 if ((ok <= 0) || X509_cmp(x, xtmp))
204 {
205 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
206 ctx->current_cert=x;
207 ctx->error_depth=i-1;
208 if (ok == 1) X509_free(xtmp);
209 ok=cb(0,ctx);
210 if (!ok) goto end;
211 }
212 else
213 {
214 /* We have a match: replace certificate with store version
215 * so we get any trust settings.
216 */
217 X509_free(x);
218 x = xtmp;
219 sk_X509_set(ctx->chain, i - 1, x);
220 ctx->last_untrusted=0;
221 }
222 }
223 else
224 {
225 /* extract and save self signed certificate for later use */
226 chain_ss=sk_X509_pop(ctx->chain);
227 ctx->last_untrusted--;
228 num--;
229 x=sk_X509_value(ctx->chain,num-1);
230 }
231 }
232
233 /* We now lookup certs from the certificate store */
234 for (;;)
235 {
236 /* If we have enough, we break */
237 if (depth < num) break;
238
239 /* If we are self signed, we break */
240 xn=X509_get_issuer_name(x);
241 if (ctx->check_issued(ctx,x,x)) break;
242
243 ok = ctx->get_issuer(&xtmp, ctx, x);
244
245 if (ok < 0) return ok;
246 if (ok == 0) break;
247
248 x = xtmp;
249 if (!sk_X509_push(ctx->chain,x))
250 {
251 X509_free(xtmp);
252 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
253 return 0;
254 }
255 num++;
256 }
257
258 /* we now have our chain, lets check it... */
259 xn=X509_get_issuer_name(x);
260
261 /* Is last certificate looked up self signed? */
262 if (!ctx->check_issued(ctx,x,x))
263 {
264 if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss))
265 {
266 if (ctx->last_untrusted >= num)
267 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
268 else
269 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
270 ctx->current_cert=x;
271 }
272 else
273 {
274
275 sk_X509_push(ctx->chain,chain_ss);
276 num++;
277 ctx->last_untrusted=num;
278 ctx->current_cert=chain_ss;
279 ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
280 chain_ss=NULL;
281 }
282
283 ctx->error_depth=num-1;
284 ok=cb(0,ctx);
285 if (!ok) goto end;
286 }
287
288 /* We have the chain complete: now we need to check its purpose */
289 if (ctx->purpose > 0) ok = check_chain_purpose(ctx);
290
291 if (!ok) goto end;
292
293 /* The chain extensions are OK: check trust */
294
295 if (ctx->trust > 0) ok = check_trust(ctx);
296
297 if (!ok) goto end;
298
299 /* We may as well copy down any DSA parameters that are required */
300 X509_get_pubkey_parameters(NULL,ctx->chain);
301
302 /* At this point, we have a chain and just need to verify it */
303 if (ctx->verify != NULL)
304 ok=ctx->verify(ctx);
305 else
306 ok=internal_verify(ctx);
307 if (0)
308 {
309end:
310 X509_get_pubkey_parameters(NULL,ctx->chain);
311 }
312 if (sktmp != NULL) sk_X509_free(sktmp);
313 if (chain_ss != NULL) X509_free(chain_ss);
314 return ok;
315 }
316
317
318/* Given a STACK_OF(X509) find the issuer of cert (if any)
319 */
320
321static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
322{
323 int i;
324 X509 *issuer;
325 for (i = 0; i < sk_X509_num(sk); i++)
326 {
327 issuer = sk_X509_value(sk, i);
328 if (ctx->check_issued(ctx, x, issuer))
329 return issuer;
330 }
331 return NULL;
332}
333
334/* Given a possible certificate and issuer check them */
335
336static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
337{
338 int ret;
339 ret = X509_check_issued(issuer, x);
340 if (ret == X509_V_OK)
341 return 1;
342 /* If we haven't asked for issuer errors don't set ctx */
343 if (!(ctx->flags & X509_V_FLAG_CB_ISSUER_CHECK))
344 return 0;
345
346 ctx->error = ret;
347 ctx->current_cert = x;
348 ctx->current_issuer = issuer;
349 if (ctx->verify_cb)
350 return ctx->verify_cb(0, ctx);
351 return 0;
352}
353
354/* Alternative lookup method: look from a STACK stored in other_ctx */
355
356static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
357{
358 *issuer = find_issuer(ctx, ctx->other_ctx, x);
359 if (*issuer)
360 {
361 CRYPTO_add(&(*issuer)->references,1,CRYPTO_LOCK_X509);
362 return 1;
363 }
364 else
365 return 0;
366}
367
368
369/* Check a certificate chains extensions for consistency
370 * with the supplied purpose
371 */
372
373static int check_chain_purpose(X509_STORE_CTX *ctx)
374{
375#ifdef NO_CHAIN_VERIFY
376 return 1;
377#else
378 int i, ok=0;
379 X509 *x;
380 int (*cb)();
381 cb=ctx->verify_cb;
382 if (cb == NULL) cb=null_callback;
383 /* Check all untrusted certificates */
384 for (i = 0; i < ctx->last_untrusted; i++)
385 {
386 x = sk_X509_value(ctx->chain, i);
387 if (!X509_check_purpose(x, ctx->purpose, i))
388 {
389 if (i)
390 ctx->error = X509_V_ERR_INVALID_CA;
391 else
392 ctx->error = X509_V_ERR_INVALID_PURPOSE;
393 ctx->error_depth = i;
394 ctx->current_cert = x;
395 ok=cb(0,ctx);
396 if (!ok) goto end;
397 }
398 /* Check pathlen */
399 if ((i > 1) && (x->ex_pathlen != -1)
400 && (i > (x->ex_pathlen + 1)))
401 {
402 ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
403 ctx->error_depth = i;
404 ctx->current_cert = x;
405 ok=cb(0,ctx);
406 if (!ok) goto end;
407 }
408 }
409 ok = 1;
410 end:
411 return ok;
412#endif
413}
414
415static int check_trust(X509_STORE_CTX *ctx)
416{
417#ifdef NO_CHAIN_VERIFY
418 return 1;
419#else
420 int i, ok;
421 X509 *x;
422 int (*cb)();
423 cb=ctx->verify_cb;
424 if (cb == NULL) cb=null_callback;
425/* For now just check the last certificate in the chain */
426 i = sk_X509_num(ctx->chain) - 1;
427 x = sk_X509_value(ctx->chain, i);
428 ok = X509_check_trust(x, ctx->trust, 0);
429 if (ok == X509_TRUST_TRUSTED)
430 return 1;
431 ctx->error_depth = sk_X509_num(ctx->chain) - 1;
432 ctx->current_cert = x;
433 if (ok == X509_TRUST_REJECTED)
434 ctx->error = X509_V_ERR_CERT_REJECTED;
435 else
436 ctx->error = X509_V_ERR_CERT_UNTRUSTED;
437 ok = cb(0, ctx);
438 return ok;
439#endif
440}
441
442static int internal_verify(X509_STORE_CTX *ctx)
443 {
444 int i,ok=0,n;
445 X509 *xs,*xi;
446 EVP_PKEY *pkey=NULL;
447 time_t *ptime;
448 int (*cb)();
449
450 cb=ctx->verify_cb;
451 if (cb == NULL) cb=null_callback;
452
453 n=sk_X509_num(ctx->chain);
454 ctx->error_depth=n-1;
455 n--;
456 xi=sk_X509_value(ctx->chain,n);
457 if (ctx->flags & X509_V_FLAG_USE_CHECK_TIME)
458 ptime = &ctx->check_time;
459 else
460 ptime = NULL;
461 if (ctx->check_issued(ctx, xi, xi))
462 xs=xi;
463 else
464 {
465 if (n <= 0)
466 {
467 ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
468 ctx->current_cert=xi;
469 ok=cb(0,ctx);
470 goto end;
471 }
472 else
473 {
474 n--;
475 ctx->error_depth=n;
476 xs=sk_X509_value(ctx->chain,n);
477 }
478 }
479
480/* ctx->error=0; not needed */
481 while (n >= 0)
482 {
483 ctx->error_depth=n;
484 if (!xs->valid)
485 {
486 if ((pkey=X509_get_pubkey(xi)) == NULL)
487 {
488 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
489 ctx->current_cert=xi;
490 ok=(*cb)(0,ctx);
491 if (!ok) goto end;
492 }
493 if (X509_verify(xs,pkey) <= 0)
494 {
495 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
496 ctx->current_cert=xs;
497 ok=(*cb)(0,ctx);
498 if (!ok)
499 {
500 EVP_PKEY_free(pkey);
501 goto end;
502 }
503 }
504 EVP_PKEY_free(pkey);
505 pkey=NULL;
506
507 i=X509_cmp_time(X509_get_notBefore(xs), ptime);
508 if (i == 0)
509 {
510 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
511 ctx->current_cert=xs;
512 ok=(*cb)(0,ctx);
513 if (!ok) goto end;
514 }
515 if (i > 0)
516 {
517 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
518 ctx->current_cert=xs;
519 ok=(*cb)(0,ctx);
520 if (!ok) goto end;
521 }
522 xs->valid=1;
523 }
524
525 i=X509_cmp_time(X509_get_notAfter(xs), ptime);
526 if (i == 0)
527 {
528 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
529 ctx->current_cert=xs;
530 ok=(*cb)(0,ctx);
531 if (!ok) goto end;
532 }
533
534 if (i < 0)
535 {
536 ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
537 ctx->current_cert=xs;
538 ok=(*cb)(0,ctx);
539 if (!ok) goto end;
540 }
541
542 /* CRL CHECK */
543
544 /* The last error (if any) is still in the error value */
545 ctx->current_cert=xs;
546 ok=(*cb)(1,ctx);
547 if (!ok) goto end;
548
549 n--;
550 if (n >= 0)
551 {
552 xi=xs;
553 xs=sk_X509_value(ctx->chain,n);
554 }
555 }
556 ok=1;
557end:
558 return ok;
559 }
560
561int X509_cmp_current_time(ASN1_TIME *ctm)
562{
563 return X509_cmp_time(ctm, NULL);
564}
565
566int X509_cmp_time(ASN1_TIME *ctm, time_t *cmp_time)
567 {
568 char *str;
569 ASN1_TIME atm;
570 time_t offset;
571 char buff1[24],buff2[24],*p;
572 int i,j;
573
574 p=buff1;
575 i=ctm->length;
576 str=(char *)ctm->data;
577 if (ctm->type == V_ASN1_UTCTIME)
578 {
579 if ((i < 11) || (i > 17)) return 0;
580 memcpy(p,str,10);
581 p+=10;
582 str+=10;
583 }
584 else
585 {
586 if (i < 13) return 0;
587 memcpy(p,str,12);
588 p+=12;
589 str+=12;
590 }
591
592 if ((*str == 'Z') || (*str == '-') || (*str == '+'))
593 { *(p++)='0'; *(p++)='0'; }
594 else
595 {
596 *(p++)= *(str++);
597 *(p++)= *(str++);
598 /* Skip any fractional seconds... */
599 if (*str == '.')
600 {
601 str++;
602 while ((*str >= '0') && (*str <= '9')) str++;
603 }
604
605 }
606 *(p++)='Z';
607 *(p++)='\0';
608
609 if (*str == 'Z')
610 offset=0;
611 else
612 {
613 if ((*str != '+') && (str[5] != '-'))
614 return 0;
615 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
616 offset+=(str[3]-'0')*10+(str[4]-'0');
617 if (*str == '-')
618 offset= -offset;
619 }
620 atm.type=ctm->type;
621 atm.length=sizeof(buff2);
622 atm.data=(unsigned char *)buff2;
623
624 X509_time_adj(&atm,-offset*60, cmp_time);
625
626 if (ctm->type == V_ASN1_UTCTIME)
627 {
628 i=(buff1[0]-'0')*10+(buff1[1]-'0');
629 if (i < 50) i+=100; /* cf. RFC 2459 */
630 j=(buff2[0]-'0')*10+(buff2[1]-'0');
631 if (j < 50) j+=100;
632
633 if (i < j) return -1;
634 if (i > j) return 1;
635 }
636 i=strcmp(buff1,buff2);
637 if (i == 0) /* wait a second then return younger :-) */
638 return -1;
639 else
640 return i;
641 }
642
643ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
644{
645 return X509_time_adj(s, adj, NULL);
646}
647
648ASN1_TIME *X509_time_adj(ASN1_TIME *s, long adj, time_t *in_tm)
649 {
650 time_t t;
651
652 if (in_tm) t = *in_tm;
653 else time(&t);
654
655 t+=adj;
656 if (!s) return ASN1_TIME_set(s, t);
657 if (s->type == V_ASN1_UTCTIME) return ASN1_UTCTIME_set(s,t);
658 return ASN1_GENERALIZEDTIME_set(s, t);
659 }
660
661int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
662 {
663 EVP_PKEY *ktmp=NULL,*ktmp2;
664 int i,j;
665
666 if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return 1;
667
668 for (i=0; i<sk_X509_num(chain); i++)
669 {
670 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
671 if (ktmp == NULL)
672 {
673 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
674 return 0;
675 }
676 if (!EVP_PKEY_missing_parameters(ktmp))
677 break;
678 else
679 {
680 EVP_PKEY_free(ktmp);
681 ktmp=NULL;
682 }
683 }
684 if (ktmp == NULL)
685 {
686 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
687 return 0;
688 }
689
690 /* first, populate the other certs */
691 for (j=i-1; j >= 0; j--)
692 {
693 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
694 EVP_PKEY_copy_parameters(ktmp2,ktmp);
695 EVP_PKEY_free(ktmp2);
696 }
697
698 if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
699 EVP_PKEY_free(ktmp);
700 return 1;
701 }
702
703int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
704 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
705 {
706 x509_store_ctx_num++;
707 return CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
708 &x509_store_ctx_method,
709 argl,argp,new_func,dup_func,free_func);
710 }
711
712int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
713 {
714 return CRYPTO_set_ex_data(&ctx->ex_data,idx,data);
715 }
716
717void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
718 {
719 return CRYPTO_get_ex_data(&ctx->ex_data,idx);
720 }
721
722int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
723 {
724 return ctx->error;
725 }
726
727void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
728 {
729 ctx->error=err;
730 }
731
732int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
733 {
734 return ctx->error_depth;
735 }
736
737X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
738 {
739 return ctx->current_cert;
740 }
741
742STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
743 {
744 return ctx->chain;
745 }
746
747STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
748 {
749 int i;
750 X509 *x;
751 STACK_OF(X509) *chain;
752 if (!ctx->chain || !(chain = sk_X509_dup(ctx->chain))) return NULL;
753 for (i = 0; i < sk_X509_num(chain); i++)
754 {
755 x = sk_X509_value(chain, i);
756 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
757 }
758 return chain;
759 }
760
761void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
762 {
763 ctx->cert=x;
764 }
765
766void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
767 {
768 ctx->untrusted=sk;
769 }
770
771int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
772 {
773 return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
774 }
775
776int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
777 {
778 return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
779 }
780
781/* This function is used to set the X509_STORE_CTX purpose and trust
782 * values. This is intended to be used when another structure has its
783 * own trust and purpose values which (if set) will be inherited by
784 * the ctx. If they aren't set then we will usually have a default
785 * purpose in mind which should then be used to set the trust value.
786 * An example of this is SSL use: an SSL structure will have its own
787 * purpose and trust settings which the application can set: if they
788 * aren't set then we use the default of SSL client/server.
789 */
790
791int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
792 int purpose, int trust)
793{
794 int idx;
795 /* If purpose not set use default */
796 if (!purpose) purpose = def_purpose;
797 /* If we have a purpose then check it is valid */
798 if (purpose)
799 {
800 X509_PURPOSE *ptmp;
801 idx = X509_PURPOSE_get_by_id(purpose);
802 if (idx == -1)
803 {
804 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
805 X509_R_UNKNOWN_PURPOSE_ID);
806 return 0;
807 }
808 ptmp = X509_PURPOSE_get0(idx);
809 if (ptmp->trust == X509_TRUST_DEFAULT)
810 {
811 idx = X509_PURPOSE_get_by_id(def_purpose);
812 if (idx == -1)
813 {
814 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
815 X509_R_UNKNOWN_PURPOSE_ID);
816 return 0;
817 }
818 ptmp = X509_PURPOSE_get0(idx);
819 }
820 /* If trust not set then get from purpose default */
821 if (!trust) trust = ptmp->trust;
822 }
823 if (trust)
824 {
825 idx = X509_TRUST_get_by_id(trust);
826 if (idx == -1)
827 {
828 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
829 X509_R_UNKNOWN_TRUST_ID);
830 return 0;
831 }
832 }
833
834 if (purpose) ctx->purpose = purpose;
835 if (trust) ctx->trust = trust;
836 return 1;
837}
838
839X509_STORE_CTX *X509_STORE_CTX_new(void)
840{
841 X509_STORE_CTX *ctx;
842 ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
843 if (ctx) memset(ctx, 0, sizeof(X509_STORE_CTX));
844 return ctx;
845}
846
847void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
848{
849 X509_STORE_CTX_cleanup(ctx);
850 OPENSSL_free(ctx);
851}
852
853void X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
854 STACK_OF(X509) *chain)
855 {
856 ctx->ctx=store;
857 ctx->current_method=0;
858 ctx->cert=x509;
859 ctx->untrusted=chain;
860 ctx->last_untrusted=0;
861 ctx->purpose=0;
862 ctx->trust=0;
863 ctx->check_time=0;
864 ctx->flags=0;
865 ctx->other_ctx=NULL;
866 ctx->valid=0;
867 ctx->chain=NULL;
868 ctx->depth=9;
869 ctx->error=0;
870 ctx->error_depth=0;
871 ctx->current_cert=NULL;
872 ctx->current_issuer=NULL;
873 ctx->check_issued = check_issued;
874 ctx->get_issuer = X509_STORE_CTX_get1_issuer;
875 ctx->verify_cb = store->verify_cb;
876 ctx->verify = store->verify;
877 ctx->cleanup = 0;
878 memset(&(ctx->ex_data),0,sizeof(CRYPTO_EX_DATA));
879 }
880
881/* Set alternative lookup method: just a STACK of trusted certificates.
882 * This avoids X509_STORE nastiness where it isn't needed.
883 */
884
885void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
886{
887 ctx->other_ctx = sk;
888 ctx->get_issuer = get_issuer_sk;
889}
890
891void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
892 {
893 if (ctx->cleanup) ctx->cleanup(ctx);
894 if (ctx->chain != NULL)
895 {
896 sk_X509_pop_free(ctx->chain,X509_free);
897 ctx->chain=NULL;
898 }
899 CRYPTO_free_ex_data(x509_store_ctx_method,ctx,&(ctx->ex_data));
900 memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
901 }
902
903void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, long flags)
904 {
905 ctx->flags |= flags;
906 }
907
908void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, long flags, time_t t)
909 {
910 ctx->check_time = t;
911 ctx->flags |= X509_V_FLAG_USE_CHECK_TIME;
912 }
913
914IMPLEMENT_STACK_OF(X509)
915IMPLEMENT_ASN1_SET_OF(X509)
916
917IMPLEMENT_STACK_OF(X509_NAME)
918
919IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
920IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-26 13:42:19 +0000