1 /* crypto/x509/x509_vfy.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
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>
74 /* CRL score values */
76 /* No unhandled critical extensions */
78 #define CRL_SCORE_NOCRITICAL 0x100
80 /* certificate is within CRL scope */
82 #define CRL_SCORE_SCOPE 0x080
86 #define CRL_SCORE_TIME 0x040
88 /* Issuer name matches certificate */
90 #define CRL_SCORE_ISSUER_NAME 0x020
92 /* If this score or above CRL is probably valid */
94 #define CRL_SCORE_VALID (CRL_SCORE_NOCRITICAL|CRL_SCORE_TIME|CRL_SCORE_SCOPE)
96 /* CRL issuer is certificate issuer */
98 #define CRL_SCORE_ISSUER_CERT 0x018
100 /* CRL issuer is on certificate path */
102 #define CRL_SCORE_SAME_PATH 0x008
104 /* CRL issuer matches CRL AKID */
106 #define CRL_SCORE_AKID 0x004
108 /* Have a delta CRL with valid times */
110 #define CRL_SCORE_TIME_DELTA 0x002
112 static int null_callback(int ok
, X509_STORE_CTX
*e
);
113 static int check_issued(X509_STORE_CTX
*ctx
, X509
*x
, X509
*issuer
);
114 static X509
*find_issuer(X509_STORE_CTX
*ctx
, STACK_OF(X509
) *sk
, X509
*x
);
115 static int check_chain_extensions(X509_STORE_CTX
*ctx
);
116 static int check_name_constraints(X509_STORE_CTX
*ctx
);
117 static int check_id(X509_STORE_CTX
*ctx
);
118 static int check_trust(X509_STORE_CTX
*ctx
);
119 static int check_revocation(X509_STORE_CTX
*ctx
);
120 static int check_cert(X509_STORE_CTX
*ctx
);
121 static int check_policy(X509_STORE_CTX
*ctx
);
123 static int get_crl_score(X509_STORE_CTX
*ctx
, X509
**pissuer
,
124 unsigned int *preasons
, X509_CRL
*crl
, X509
*x
);
125 static int get_crl_delta(X509_STORE_CTX
*ctx
,
126 X509_CRL
**pcrl
, X509_CRL
**pdcrl
, X509
*x
);
127 static void get_delta_sk(X509_STORE_CTX
*ctx
, X509_CRL
**dcrl
,
128 int *pcrl_score
, X509_CRL
*base
,
129 STACK_OF(X509_CRL
) *crls
);
130 static void crl_akid_check(X509_STORE_CTX
*ctx
, X509_CRL
*crl
, X509
**pissuer
,
132 static int crl_crldp_check(X509
*x
, X509_CRL
*crl
, int crl_score
,
133 unsigned int *preasons
);
134 static int check_crl_path(X509_STORE_CTX
*ctx
, X509
*x
);
135 static int check_crl_chain(X509_STORE_CTX
*ctx
,
136 STACK_OF(X509
) *cert_path
,
137 STACK_OF(X509
) *crl_path
);
139 static int internal_verify(X509_STORE_CTX
*ctx
);
140 const char X509_version
[] = "X.509" OPENSSL_VERSION_PTEXT
;
142 static int null_callback(int ok
, X509_STORE_CTX
*e
)
148 static int x509_subject_cmp(X509
**a
, X509
**b
)
150 return X509_subject_name_cmp(*a
, *b
);
153 /* Return 1 is a certificate is self signed */
154 static int cert_self_signed(X509
*x
)
156 X509_check_purpose(x
, -1, 0);
157 if (x
->ex_flags
& EXFLAG_SS
)
163 /* Given a certificate try and find an exact match in the store */
165 static X509
*lookup_cert_match(X509_STORE_CTX
*ctx
, X509
*x
)
167 STACK_OF(X509
) *certs
;
170 /* Lookup all certs with matching subject name */
171 certs
= ctx
->lookup_certs(ctx
, X509_get_subject_name(x
));
174 /* Look for exact match */
175 for (i
= 0; i
< sk_X509_num(certs
); i
++) {
176 xtmp
= sk_X509_value(certs
, i
);
177 if (!X509_cmp(xtmp
, x
))
180 if (i
< sk_X509_num(certs
))
181 CRYPTO_add(&xtmp
->references
, 1, CRYPTO_LOCK_X509
);
184 sk_X509_pop_free(certs
, X509_free
);
188 int X509_verify_cert(X509_STORE_CTX
*ctx
)
190 X509
*x
, *xtmp
, *xtmp2
, *chain_ss
= NULL
;
192 X509_VERIFY_PARAM
*param
= ctx
->param
;
193 int depth
, i
, ok
= 0;
195 int (*cb
) (int xok
, X509_STORE_CTX
*xctx
);
196 STACK_OF(X509
) *sktmp
= NULL
;
197 if (ctx
->cert
== NULL
) {
198 X509err(X509_F_X509_VERIFY_CERT
, X509_R_NO_CERT_SET_FOR_US_TO_VERIFY
);
201 if (ctx
->chain
!= NULL
) {
203 * This X509_STORE_CTX has already been used to verify a cert. We
204 * cannot do another one.
206 X509err(X509_F_X509_VERIFY_CERT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
213 * first we make sure the chain we are going to build is present and that
214 * the first entry is in place
216 if (((ctx
->chain
= sk_X509_new_null()) == NULL
) ||
217 (!sk_X509_push(ctx
->chain
, ctx
->cert
))) {
218 X509err(X509_F_X509_VERIFY_CERT
, ERR_R_MALLOC_FAILURE
);
221 CRYPTO_add(&ctx
->cert
->references
, 1, CRYPTO_LOCK_X509
);
222 ctx
->last_untrusted
= 1;
224 /* We use a temporary STACK so we can chop and hack at it */
225 if (ctx
->untrusted
!= NULL
226 && (sktmp
= sk_X509_dup(ctx
->untrusted
)) == NULL
) {
227 X509err(X509_F_X509_VERIFY_CERT
, ERR_R_MALLOC_FAILURE
);
231 num
= sk_X509_num(ctx
->chain
);
232 x
= sk_X509_value(ctx
->chain
, num
- 1);
233 depth
= param
->depth
;
236 /* If we have enough, we break */
238 break; /* FIXME: If this happens, we should take
239 * note of it and, if appropriate, use the
240 * X509_V_ERR_CERT_CHAIN_TOO_LONG error code
243 /* If we are self signed, we break */
244 if (cert_self_signed(x
))
247 * If asked see if we can find issuer in trusted store first
249 if (ctx
->param
->flags
& X509_V_FLAG_TRUSTED_FIRST
) {
250 ok
= ctx
->get_issuer(&xtmp
, ctx
, x
);
254 * If successful for now free up cert so it will be picked up
263 /* If we were passed a cert chain, use it first */
264 if (ctx
->untrusted
!= NULL
) {
265 xtmp
= find_issuer(ctx
, sktmp
, x
);
267 if (!sk_X509_push(ctx
->chain
, xtmp
)) {
268 X509err(X509_F_X509_VERIFY_CERT
, ERR_R_MALLOC_FAILURE
);
271 CRYPTO_add(&xtmp
->references
, 1, CRYPTO_LOCK_X509
);
272 (void)sk_X509_delete_ptr(sktmp
, xtmp
);
273 ctx
->last_untrusted
++;
277 * reparse the full chain for the next one
285 /* Remember how many untrusted certs we have */
288 * at this point, chain should contain a list of untrusted certificates.
289 * We now need to add at least one trusted one, if possible, otherwise we
295 * Examine last certificate in chain and see if it is self signed.
297 i
= sk_X509_num(ctx
->chain
);
298 x
= sk_X509_value(ctx
->chain
, i
- 1);
299 if (cert_self_signed(x
)) {
300 /* we have a self signed certificate */
301 if (sk_X509_num(ctx
->chain
) == 1) {
303 * We have a single self signed certificate: see if we can
304 * find it in the store. We must have an exact match to avoid
305 * possible impersonation.
307 ok
= ctx
->get_issuer(&xtmp
, ctx
, x
);
308 if ((ok
<= 0) || X509_cmp(x
, xtmp
)) {
309 ctx
->error
= X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
;
310 ctx
->current_cert
= x
;
311 ctx
->error_depth
= i
- 1;
320 * We have a match: replace certificate with store
321 * version so we get any trust settings.
325 (void)sk_X509_set(ctx
->chain
, i
- 1, x
);
326 ctx
->last_untrusted
= 0;
330 * extract and save self signed certificate for later use
332 chain_ss
= sk_X509_pop(ctx
->chain
);
333 ctx
->last_untrusted
--;
336 x
= sk_X509_value(ctx
->chain
, num
- 1);
339 /* We now lookup certs from the certificate store */
341 /* If we have enough, we break */
344 /* If we are self signed, we break */
345 if (cert_self_signed(x
))
347 ok
= ctx
->get_issuer(&xtmp
, ctx
, x
);
354 if (!sk_X509_push(ctx
->chain
, x
)) {
356 X509err(X509_F_X509_VERIFY_CERT
, ERR_R_MALLOC_FAILURE
);
363 /* we now have our chain, lets check it... */
364 i
= check_trust(ctx
);
366 /* If explicitly rejected error */
367 if (i
== X509_TRUST_REJECTED
)
370 * If it's not explicitly trusted then check if there is an alternative
371 * chain that could be used. We only do this if we haven't already
372 * checked via TRUSTED_FIRST and the user hasn't switched off alternate
376 if (i
!= X509_TRUST_TRUSTED
377 && !(ctx
->param
->flags
& X509_V_FLAG_TRUSTED_FIRST
)
378 && !(ctx
->param
->flags
& X509_V_FLAG_NO_ALT_CHAINS
)) {
380 xtmp2
= sk_X509_value(ctx
->chain
, j
- 1);
381 ok
= ctx
->get_issuer(&xtmp
, ctx
, xtmp2
);
384 /* Check if we found an alternate chain */
387 * Free up the found cert we'll add it again later
392 * Dump all the certs above this point - we've found an
396 xtmp
= sk_X509_pop(ctx
->chain
);
400 ctx
->last_untrusted
= sk_X509_num(ctx
->chain
);
409 * If not explicitly trusted then indicate error unless it's a single
410 * self signed certificate in which case we've indicated an error already
411 * and set bad_chain == 1
413 if (i
!= X509_TRUST_TRUSTED
&& !bad_chain
) {
414 if ((chain_ss
== NULL
) || !ctx
->check_issued(ctx
, x
, chain_ss
)) {
415 if (ctx
->last_untrusted
>= num
)
416 ctx
->error
= X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
;
418 ctx
->error
= X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
;
419 ctx
->current_cert
= x
;
422 sk_X509_push(ctx
->chain
, chain_ss
);
424 ctx
->last_untrusted
= num
;
425 ctx
->current_cert
= chain_ss
;
426 ctx
->error
= X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
;
430 ctx
->error_depth
= num
- 1;
437 /* We have the chain complete: now we need to check its purpose */
438 ok
= check_chain_extensions(ctx
);
443 /* Check name constraints */
445 ok
= check_name_constraints(ctx
);
455 /* We may as well copy down any DSA parameters that are required */
456 X509_get_pubkey_parameters(NULL
, ctx
->chain
);
459 * Check revocation status: we do this after copying parameters because
460 * they may be needed for CRL signature verification.
463 ok
= ctx
->check_revocation(ctx
);
467 i
= X509_chain_check_suiteb(&ctx
->error_depth
, NULL
, ctx
->chain
,
469 if (i
!= X509_V_OK
) {
471 ctx
->current_cert
= sk_X509_value(ctx
->chain
, ctx
->error_depth
);
477 /* At this point, we have a chain and need to verify it */
478 if (ctx
->verify
!= NULL
)
479 ok
= ctx
->verify(ctx
);
481 ok
= internal_verify(ctx
);
485 #ifndef OPENSSL_NO_RFC3779
486 /* RFC 3779 path validation, now that CRL check has been done */
487 ok
= v3_asid_validate_path(ctx
);
490 ok
= v3_addr_validate_path(ctx
);
495 /* If we get this far evaluate policies */
496 if (!bad_chain
&& (ctx
->param
->flags
& X509_V_FLAG_POLICY_CHECK
))
497 ok
= ctx
->check_policy(ctx
);
502 X509_get_pubkey_parameters(NULL
, ctx
->chain
);
506 if (chain_ss
!= NULL
)
512 * Given a STACK_OF(X509) find the issuer of cert (if any)
515 static X509
*find_issuer(X509_STORE_CTX
*ctx
, STACK_OF(X509
) *sk
, X509
*x
)
519 for (i
= 0; i
< sk_X509_num(sk
); i
++) {
520 issuer
= sk_X509_value(sk
, i
);
521 if (ctx
->check_issued(ctx
, x
, issuer
))
527 /* Given a possible certificate and issuer check them */
529 static int check_issued(X509_STORE_CTX
*ctx
, X509
*x
, X509
*issuer
)
532 ret
= X509_check_issued(issuer
, x
);
533 if (ret
== X509_V_OK
)
535 /* If we haven't asked for issuer errors don't set ctx */
536 if (!(ctx
->param
->flags
& X509_V_FLAG_CB_ISSUER_CHECK
))
540 ctx
->current_cert
= x
;
541 ctx
->current_issuer
= issuer
;
542 return ctx
->verify_cb(0, ctx
);
545 /* Alternative lookup method: look from a STACK stored in other_ctx */
547 static int get_issuer_sk(X509
**issuer
, X509_STORE_CTX
*ctx
, X509
*x
)
549 *issuer
= find_issuer(ctx
, ctx
->other_ctx
, x
);
551 CRYPTO_add(&(*issuer
)->references
, 1, CRYPTO_LOCK_X509
);
558 * Check a certificate chains extensions for consistency with the supplied
562 static int check_chain_extensions(X509_STORE_CTX
*ctx
)
564 #ifdef OPENSSL_NO_CHAIN_VERIFY
567 int i
, ok
= 0, must_be_ca
, plen
= 0;
569 int (*cb
) (int xok
, X509_STORE_CTX
*xctx
);
570 int proxy_path_length
= 0;
572 int allow_proxy_certs
;
576 * must_be_ca can have 1 of 3 values:
577 * -1: we accept both CA and non-CA certificates, to allow direct
578 * use of self-signed certificates (which are marked as CA).
579 * 0: we only accept non-CA certificates. This is currently not
580 * used, but the possibility is present for future extensions.
581 * 1: we only accept CA certificates. This is currently used for
582 * all certificates in the chain except the leaf certificate.
586 /* CRL path validation */
588 allow_proxy_certs
= 0;
589 purpose
= X509_PURPOSE_CRL_SIGN
;
592 ! !(ctx
->param
->flags
& X509_V_FLAG_ALLOW_PROXY_CERTS
);
594 * A hack to keep people who don't want to modify their software
597 if (getenv("OPENSSL_ALLOW_PROXY_CERTS"))
598 allow_proxy_certs
= 1;
599 purpose
= ctx
->param
->purpose
;
602 /* Check all untrusted certificates */
603 for (i
= 0; i
< ctx
->last_untrusted
; i
++) {
605 x
= sk_X509_value(ctx
->chain
, i
);
606 if (!(ctx
->param
->flags
& X509_V_FLAG_IGNORE_CRITICAL
)
607 && (x
->ex_flags
& EXFLAG_CRITICAL
)) {
608 ctx
->error
= X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION
;
609 ctx
->error_depth
= i
;
610 ctx
->current_cert
= x
;
615 if (!allow_proxy_certs
&& (x
->ex_flags
& EXFLAG_PROXY
)) {
616 ctx
->error
= X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED
;
617 ctx
->error_depth
= i
;
618 ctx
->current_cert
= x
;
623 ret
= X509_check_ca(x
);
624 switch (must_be_ca
) {
626 if ((ctx
->param
->flags
& X509_V_FLAG_X509_STRICT
)
627 && (ret
!= 1) && (ret
!= 0)) {
629 ctx
->error
= X509_V_ERR_INVALID_CA
;
636 ctx
->error
= X509_V_ERR_INVALID_NON_CA
;
642 || ((ctx
->param
->flags
& X509_V_FLAG_X509_STRICT
)
645 ctx
->error
= X509_V_ERR_INVALID_CA
;
651 ctx
->error_depth
= i
;
652 ctx
->current_cert
= x
;
657 if (ctx
->param
->purpose
> 0) {
658 ret
= X509_check_purpose(x
, purpose
, must_be_ca
> 0);
660 || ((ctx
->param
->flags
& X509_V_FLAG_X509_STRICT
)
662 ctx
->error
= X509_V_ERR_INVALID_PURPOSE
;
663 ctx
->error_depth
= i
;
664 ctx
->current_cert
= x
;
670 /* Check pathlen if not self issued */
671 if ((i
> 1) && !(x
->ex_flags
& EXFLAG_SI
)
672 && (x
->ex_pathlen
!= -1)
673 && (plen
> (x
->ex_pathlen
+ proxy_path_length
+ 1))) {
674 ctx
->error
= X509_V_ERR_PATH_LENGTH_EXCEEDED
;
675 ctx
->error_depth
= i
;
676 ctx
->current_cert
= x
;
681 /* Increment path length if not self issued */
682 if (!(x
->ex_flags
& EXFLAG_SI
))
685 * If this certificate is a proxy certificate, the next certificate
686 * must be another proxy certificate or a EE certificate. If not,
687 * the next certificate must be a CA certificate.
689 if (x
->ex_flags
& EXFLAG_PROXY
) {
690 if (x
->ex_pcpathlen
!= -1 && i
> x
->ex_pcpathlen
) {
691 ctx
->error
= X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED
;
692 ctx
->error_depth
= i
;
693 ctx
->current_cert
= x
;
709 static int check_name_constraints(X509_STORE_CTX
*ctx
)
713 /* Check name constraints for all certificates */
714 for (i
= sk_X509_num(ctx
->chain
) - 1; i
>= 0; i
--) {
715 x
= sk_X509_value(ctx
->chain
, i
);
716 /* Ignore self issued certs unless last in chain */
717 if (i
&& (x
->ex_flags
& EXFLAG_SI
))
720 * Check against constraints for all certificates higher in chain
721 * including trust anchor. Trust anchor not strictly speaking needed
722 * but if it includes constraints it is to be assumed it expects them
725 for (j
= sk_X509_num(ctx
->chain
) - 1; j
> i
; j
--) {
726 NAME_CONSTRAINTS
*nc
= sk_X509_value(ctx
->chain
, j
)->nc
;
728 rv
= NAME_CONSTRAINTS_check(x
, nc
);
729 if (rv
!= X509_V_OK
) {
731 ctx
->error_depth
= i
;
732 ctx
->current_cert
= x
;
733 if (!ctx
->verify_cb(0, ctx
))
742 static int check_id_error(X509_STORE_CTX
*ctx
, int errcode
)
744 ctx
->error
= errcode
;
745 ctx
->current_cert
= ctx
->cert
;
746 ctx
->error_depth
= 0;
747 return ctx
->verify_cb(0, ctx
);
750 static int check_hosts(X509
*x
, X509_VERIFY_PARAM_ID
*id
)
753 int n
= sk_OPENSSL_STRING_num(id
->hosts
);
756 if (id
->peername
!= NULL
) {
757 OPENSSL_free(id
->peername
);
760 for (i
= 0; i
< n
; ++i
) {
761 name
= sk_OPENSSL_STRING_value(id
->hosts
, i
);
762 if (X509_check_host(x
, name
, 0, id
->hostflags
, &id
->peername
) > 0)
768 static int check_id(X509_STORE_CTX
*ctx
)
770 X509_VERIFY_PARAM
*vpm
= ctx
->param
;
771 X509_VERIFY_PARAM_ID
*id
= vpm
->id
;
773 if (id
->hosts
&& check_hosts(x
, id
) <= 0) {
774 if (!check_id_error(ctx
, X509_V_ERR_HOSTNAME_MISMATCH
))
777 if (id
->email
&& X509_check_email(x
, id
->email
, id
->emaillen
, 0) <= 0) {
778 if (!check_id_error(ctx
, X509_V_ERR_EMAIL_MISMATCH
))
781 if (id
->ip
&& X509_check_ip(x
, id
->ip
, id
->iplen
, 0) <= 0) {
782 if (!check_id_error(ctx
, X509_V_ERR_IP_ADDRESS_MISMATCH
))
788 static int check_trust(X509_STORE_CTX
*ctx
)
792 int (*cb
) (int xok
, X509_STORE_CTX
*xctx
);
794 /* Check all trusted certificates in chain */
795 for (i
= ctx
->last_untrusted
; i
< sk_X509_num(ctx
->chain
); i
++) {
796 x
= sk_X509_value(ctx
->chain
, i
);
797 ok
= X509_check_trust(x
, ctx
->param
->trust
, 0);
798 /* If explicitly trusted return trusted */
799 if (ok
== X509_TRUST_TRUSTED
)
800 return X509_TRUST_TRUSTED
;
802 * If explicitly rejected notify callback and reject if not
805 if (ok
== X509_TRUST_REJECTED
) {
806 ctx
->error_depth
= i
;
807 ctx
->current_cert
= x
;
808 ctx
->error
= X509_V_ERR_CERT_REJECTED
;
811 return X509_TRUST_REJECTED
;
815 * If we accept partial chains and have at least one trusted certificate
818 if (ctx
->param
->flags
& X509_V_FLAG_PARTIAL_CHAIN
) {
820 if (ctx
->last_untrusted
< sk_X509_num(ctx
->chain
))
821 return X509_TRUST_TRUSTED
;
822 x
= sk_X509_value(ctx
->chain
, 0);
823 mx
= lookup_cert_match(ctx
, x
);
825 (void)sk_X509_set(ctx
->chain
, 0, mx
);
827 ctx
->last_untrusted
= 0;
828 return X509_TRUST_TRUSTED
;
833 * If no trusted certs in chain at all return untrusted and allow
834 * standard (no issuer cert) etc errors to be indicated.
836 return X509_TRUST_UNTRUSTED
;
839 static int check_revocation(X509_STORE_CTX
*ctx
)
842 if (!(ctx
->param
->flags
& X509_V_FLAG_CRL_CHECK
))
844 if (ctx
->param
->flags
& X509_V_FLAG_CRL_CHECK_ALL
)
845 last
= sk_X509_num(ctx
->chain
) - 1;
847 /* If checking CRL paths this isn't the EE certificate */
852 for (i
= 0; i
<= last
; i
++) {
853 ctx
->error_depth
= i
;
854 ok
= check_cert(ctx
);
861 static int check_cert(X509_STORE_CTX
*ctx
)
863 X509_CRL
*crl
= NULL
, *dcrl
= NULL
;
866 unsigned int last_reasons
;
867 cnum
= ctx
->error_depth
;
868 x
= sk_X509_value(ctx
->chain
, cnum
);
869 ctx
->current_cert
= x
;
870 ctx
->current_issuer
= NULL
;
871 ctx
->current_crl_score
= 0;
872 ctx
->current_reasons
= 0;
873 while (ctx
->current_reasons
!= CRLDP_ALL_REASONS
) {
874 last_reasons
= ctx
->current_reasons
;
875 /* Try to retrieve relevant CRL */
877 ok
= ctx
->get_crl(ctx
, &crl
, x
);
879 ok
= get_crl_delta(ctx
, &crl
, &dcrl
, x
);
881 * If error looking up CRL, nothing we can do except notify callback
884 ctx
->error
= X509_V_ERR_UNABLE_TO_GET_CRL
;
885 ok
= ctx
->verify_cb(0, ctx
);
888 ctx
->current_crl
= crl
;
889 ok
= ctx
->check_crl(ctx
, crl
);
894 ok
= ctx
->check_crl(ctx
, dcrl
);
897 ok
= ctx
->cert_crl(ctx
, dcrl
, x
);
903 /* Don't look in full CRL if delta reason is removefromCRL */
905 ok
= ctx
->cert_crl(ctx
, crl
, x
);
915 * If reasons not updated we wont get anywhere by another iteration,
918 if (last_reasons
== ctx
->current_reasons
) {
919 ctx
->error
= X509_V_ERR_UNABLE_TO_GET_CRL
;
920 ok
= ctx
->verify_cb(0, ctx
);
928 ctx
->current_crl
= NULL
;
933 /* Check CRL times against values in X509_STORE_CTX */
935 static int check_crl_time(X509_STORE_CTX
*ctx
, X509_CRL
*crl
, int notify
)
940 ctx
->current_crl
= crl
;
941 if (ctx
->param
->flags
& X509_V_FLAG_USE_CHECK_TIME
)
942 ptime
= &ctx
->param
->check_time
;
946 i
= X509_cmp_time(X509_CRL_get_lastUpdate(crl
), ptime
);
950 ctx
->error
= X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
;
951 if (!ctx
->verify_cb(0, ctx
))
958 ctx
->error
= X509_V_ERR_CRL_NOT_YET_VALID
;
959 if (!ctx
->verify_cb(0, ctx
))
963 if (X509_CRL_get_nextUpdate(crl
)) {
964 i
= X509_cmp_time(X509_CRL_get_nextUpdate(crl
), ptime
);
969 ctx
->error
= X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
;
970 if (!ctx
->verify_cb(0, ctx
))
973 /* Ignore expiry of base CRL is delta is valid */
974 if ((i
< 0) && !(ctx
->current_crl_score
& CRL_SCORE_TIME_DELTA
)) {
977 ctx
->error
= X509_V_ERR_CRL_HAS_EXPIRED
;
978 if (!ctx
->verify_cb(0, ctx
))
984 ctx
->current_crl
= NULL
;
989 static int get_crl_sk(X509_STORE_CTX
*ctx
, X509_CRL
**pcrl
, X509_CRL
**pdcrl
,
990 X509
**pissuer
, int *pscore
, unsigned int *preasons
,
991 STACK_OF(X509_CRL
) *crls
)
993 int i
, crl_score
, best_score
= *pscore
;
994 unsigned int reasons
, best_reasons
= 0;
995 X509
*x
= ctx
->current_cert
;
996 X509_CRL
*crl
, *best_crl
= NULL
;
997 X509
*crl_issuer
= NULL
, *best_crl_issuer
= NULL
;
999 for (i
= 0; i
< sk_X509_CRL_num(crls
); i
++) {
1000 crl
= sk_X509_CRL_value(crls
, i
);
1001 reasons
= *preasons
;
1002 crl_score
= get_crl_score(ctx
, &crl_issuer
, &reasons
, crl
, x
);
1004 if (crl_score
> best_score
) {
1006 best_crl_issuer
= crl_issuer
;
1007 best_score
= crl_score
;
1008 best_reasons
= reasons
;
1014 X509_CRL_free(*pcrl
);
1016 *pissuer
= best_crl_issuer
;
1017 *pscore
= best_score
;
1018 *preasons
= best_reasons
;
1019 CRYPTO_add(&best_crl
->references
, 1, CRYPTO_LOCK_X509_CRL
);
1021 X509_CRL_free(*pdcrl
);
1024 get_delta_sk(ctx
, pdcrl
, pscore
, best_crl
, crls
);
1027 if (best_score
>= CRL_SCORE_VALID
)
1034 * Compare two CRL extensions for delta checking purposes. They should be
1035 * both present or both absent. If both present all fields must be identical.
1038 static int crl_extension_match(X509_CRL
*a
, X509_CRL
*b
, int nid
)
1040 ASN1_OCTET_STRING
*exta
, *extb
;
1042 i
= X509_CRL_get_ext_by_NID(a
, nid
, -1);
1044 /* Can't have multiple occurrences */
1045 if (X509_CRL_get_ext_by_NID(a
, nid
, i
) != -1)
1047 exta
= X509_EXTENSION_get_data(X509_CRL_get_ext(a
, i
));
1051 i
= X509_CRL_get_ext_by_NID(b
, nid
, -1);
1055 if (X509_CRL_get_ext_by_NID(b
, nid
, i
) != -1)
1057 extb
= X509_EXTENSION_get_data(X509_CRL_get_ext(b
, i
));
1067 if (ASN1_OCTET_STRING_cmp(exta
, extb
))
1073 /* See if a base and delta are compatible */
1075 static int check_delta_base(X509_CRL
*delta
, X509_CRL
*base
)
1077 /* Delta CRL must be a delta */
1078 if (!delta
->base_crl_number
)
1080 /* Base must have a CRL number */
1081 if (!base
->crl_number
)
1083 /* Issuer names must match */
1084 if (X509_NAME_cmp(X509_CRL_get_issuer(base
), X509_CRL_get_issuer(delta
)))
1086 /* AKID and IDP must match */
1087 if (!crl_extension_match(delta
, base
, NID_authority_key_identifier
))
1089 if (!crl_extension_match(delta
, base
, NID_issuing_distribution_point
))
1091 /* Delta CRL base number must not exceed Full CRL number. */
1092 if (ASN1_INTEGER_cmp(delta
->base_crl_number
, base
->crl_number
) > 0)
1094 /* Delta CRL number must exceed full CRL number */
1095 if (ASN1_INTEGER_cmp(delta
->crl_number
, base
->crl_number
) > 0)
1101 * For a given base CRL find a delta... maybe extend to delta scoring or
1102 * retrieve a chain of deltas...
1105 static void get_delta_sk(X509_STORE_CTX
*ctx
, X509_CRL
**dcrl
, int *pscore
,
1106 X509_CRL
*base
, STACK_OF(X509_CRL
) *crls
)
1110 if (!(ctx
->param
->flags
& X509_V_FLAG_USE_DELTAS
))
1112 if (!((ctx
->current_cert
->ex_flags
| base
->flags
) & EXFLAG_FRESHEST
))
1114 for (i
= 0; i
< sk_X509_CRL_num(crls
); i
++) {
1115 delta
= sk_X509_CRL_value(crls
, i
);
1116 if (check_delta_base(delta
, base
)) {
1117 if (check_crl_time(ctx
, delta
, 0))
1118 *pscore
|= CRL_SCORE_TIME_DELTA
;
1119 CRYPTO_add(&delta
->references
, 1, CRYPTO_LOCK_X509_CRL
);
1128 * For a given CRL return how suitable it is for the supplied certificate
1129 * 'x'. The return value is a mask of several criteria. If the issuer is not
1130 * the certificate issuer this is returned in *pissuer. The reasons mask is
1131 * also used to determine if the CRL is suitable: if no new reasons the CRL
1132 * is rejected, otherwise reasons is updated.
1135 static int get_crl_score(X509_STORE_CTX
*ctx
, X509
**pissuer
,
1136 unsigned int *preasons
, X509_CRL
*crl
, X509
*x
)
1140 unsigned int tmp_reasons
= *preasons
, crl_reasons
;
1142 /* First see if we can reject CRL straight away */
1144 /* Invalid IDP cannot be processed */
1145 if (crl
->idp_flags
& IDP_INVALID
)
1147 /* Reason codes or indirect CRLs need extended CRL support */
1148 if (!(ctx
->param
->flags
& X509_V_FLAG_EXTENDED_CRL_SUPPORT
)) {
1149 if (crl
->idp_flags
& (IDP_INDIRECT
| IDP_REASONS
))
1151 } else if (crl
->idp_flags
& IDP_REASONS
) {
1152 /* If no new reasons reject */
1153 if (!(crl
->idp_reasons
& ~tmp_reasons
))
1156 /* Don't process deltas at this stage */
1157 else if (crl
->base_crl_number
)
1159 /* If issuer name doesn't match certificate need indirect CRL */
1160 if (X509_NAME_cmp(X509_get_issuer_name(x
), X509_CRL_get_issuer(crl
))) {
1161 if (!(crl
->idp_flags
& IDP_INDIRECT
))
1164 crl_score
|= CRL_SCORE_ISSUER_NAME
;
1166 if (!(crl
->flags
& EXFLAG_CRITICAL
))
1167 crl_score
|= CRL_SCORE_NOCRITICAL
;
1170 if (check_crl_time(ctx
, crl
, 0))
1171 crl_score
|= CRL_SCORE_TIME
;
1173 /* Check authority key ID and locate certificate issuer */
1174 crl_akid_check(ctx
, crl
, pissuer
, &crl_score
);
1176 /* If we can't locate certificate issuer at this point forget it */
1178 if (!(crl_score
& CRL_SCORE_AKID
))
1181 /* Check cert for matching CRL distribution points */
1183 if (crl_crldp_check(x
, crl
, crl_score
, &crl_reasons
)) {
1184 /* If no new reasons reject */
1185 if (!(crl_reasons
& ~tmp_reasons
))
1187 tmp_reasons
|= crl_reasons
;
1188 crl_score
|= CRL_SCORE_SCOPE
;
1191 *preasons
= tmp_reasons
;
1197 static void crl_akid_check(X509_STORE_CTX
*ctx
, X509_CRL
*crl
,
1198 X509
**pissuer
, int *pcrl_score
)
1200 X509
*crl_issuer
= NULL
;
1201 X509_NAME
*cnm
= X509_CRL_get_issuer(crl
);
1202 int cidx
= ctx
->error_depth
;
1205 if (cidx
!= sk_X509_num(ctx
->chain
) - 1)
1208 crl_issuer
= sk_X509_value(ctx
->chain
, cidx
);
1210 if (X509_check_akid(crl_issuer
, crl
->akid
) == X509_V_OK
) {
1211 if (*pcrl_score
& CRL_SCORE_ISSUER_NAME
) {
1212 *pcrl_score
|= CRL_SCORE_AKID
| CRL_SCORE_ISSUER_CERT
;
1213 *pissuer
= crl_issuer
;
1218 for (cidx
++; cidx
< sk_X509_num(ctx
->chain
); cidx
++) {
1219 crl_issuer
= sk_X509_value(ctx
->chain
, cidx
);
1220 if (X509_NAME_cmp(X509_get_subject_name(crl_issuer
), cnm
))
1222 if (X509_check_akid(crl_issuer
, crl
->akid
) == X509_V_OK
) {
1223 *pcrl_score
|= CRL_SCORE_AKID
| CRL_SCORE_SAME_PATH
;
1224 *pissuer
= crl_issuer
;
1229 /* Anything else needs extended CRL support */
1231 if (!(ctx
->param
->flags
& X509_V_FLAG_EXTENDED_CRL_SUPPORT
))
1235 * Otherwise the CRL issuer is not on the path. Look for it in the set of
1236 * untrusted certificates.
1238 for (i
= 0; i
< sk_X509_num(ctx
->untrusted
); i
++) {
1239 crl_issuer
= sk_X509_value(ctx
->untrusted
, i
);
1240 if (X509_NAME_cmp(X509_get_subject_name(crl_issuer
), cnm
))
1242 if (X509_check_akid(crl_issuer
, crl
->akid
) == X509_V_OK
) {
1243 *pissuer
= crl_issuer
;
1244 *pcrl_score
|= CRL_SCORE_AKID
;
1251 * Check the path of a CRL issuer certificate. This creates a new
1252 * X509_STORE_CTX and populates it with most of the parameters from the
1253 * parent. This could be optimised somewhat since a lot of path checking will
1254 * be duplicated by the parent, but this will rarely be used in practice.
1257 static int check_crl_path(X509_STORE_CTX
*ctx
, X509
*x
)
1259 X509_STORE_CTX crl_ctx
;
1261 /* Don't allow recursive CRL path validation */
1264 if (!X509_STORE_CTX_init(&crl_ctx
, ctx
->ctx
, x
, ctx
->untrusted
))
1267 crl_ctx
.crls
= ctx
->crls
;
1268 /* Copy verify params across */
1269 X509_STORE_CTX_set0_param(&crl_ctx
, ctx
->param
);
1271 crl_ctx
.parent
= ctx
;
1272 crl_ctx
.verify_cb
= ctx
->verify_cb
;
1274 /* Verify CRL issuer */
1275 ret
= X509_verify_cert(&crl_ctx
);
1280 /* Check chain is acceptable */
1282 ret
= check_crl_chain(ctx
, ctx
->chain
, crl_ctx
.chain
);
1284 X509_STORE_CTX_cleanup(&crl_ctx
);
1289 * RFC3280 says nothing about the relationship between CRL path and
1290 * certificate path, which could lead to situations where a certificate could
1291 * be revoked or validated by a CA not authorised to do so. RFC5280 is more
1292 * strict and states that the two paths must end in the same trust anchor,
1293 * though some discussions remain... until this is resolved we use the
1297 static int check_crl_chain(X509_STORE_CTX
*ctx
,
1298 STACK_OF(X509
) *cert_path
,
1299 STACK_OF(X509
) *crl_path
)
1301 X509
*cert_ta
, *crl_ta
;
1302 cert_ta
= sk_X509_value(cert_path
, sk_X509_num(cert_path
) - 1);
1303 crl_ta
= sk_X509_value(crl_path
, sk_X509_num(crl_path
) - 1);
1304 if (!X509_cmp(cert_ta
, crl_ta
))
1310 * Check for match between two dist point names: three separate cases.
1311 * 1. Both are relative names and compare X509_NAME types.
1312 * 2. One full, one relative. Compare X509_NAME to GENERAL_NAMES.
1313 * 3. Both are full names and compare two GENERAL_NAMES.
1314 * 4. One is NULL: automatic match.
1317 static int idp_check_dp(DIST_POINT_NAME
*a
, DIST_POINT_NAME
*b
)
1319 X509_NAME
*nm
= NULL
;
1320 GENERAL_NAMES
*gens
= NULL
;
1321 GENERAL_NAME
*gena
, *genb
;
1328 /* Case 1: two X509_NAME */
1332 if (!X509_NAME_cmp(a
->dpname
, b
->dpname
))
1337 /* Case 2: set name and GENERAL_NAMES appropriately */
1339 gens
= b
->name
.fullname
;
1340 } else if (b
->type
== 1) {
1343 /* Case 2: set name and GENERAL_NAMES appropriately */
1344 gens
= a
->name
.fullname
;
1348 /* Handle case 2 with one GENERAL_NAMES and one X509_NAME */
1350 for (i
= 0; i
< sk_GENERAL_NAME_num(gens
); i
++) {
1351 gena
= sk_GENERAL_NAME_value(gens
, i
);
1352 if (gena
->type
!= GEN_DIRNAME
)
1354 if (!X509_NAME_cmp(nm
, gena
->d
.directoryName
))
1360 /* Else case 3: two GENERAL_NAMES */
1362 for (i
= 0; i
< sk_GENERAL_NAME_num(a
->name
.fullname
); i
++) {
1363 gena
= sk_GENERAL_NAME_value(a
->name
.fullname
, i
);
1364 for (j
= 0; j
< sk_GENERAL_NAME_num(b
->name
.fullname
); j
++) {
1365 genb
= sk_GENERAL_NAME_value(b
->name
.fullname
, j
);
1366 if (!GENERAL_NAME_cmp(gena
, genb
))
1375 static int crldp_check_crlissuer(DIST_POINT
*dp
, X509_CRL
*crl
, int crl_score
)
1378 X509_NAME
*nm
= X509_CRL_get_issuer(crl
);
1379 /* If no CRLissuer return is successful iff don't need a match */
1381 return ! !(crl_score
& CRL_SCORE_ISSUER_NAME
);
1382 for (i
= 0; i
< sk_GENERAL_NAME_num(dp
->CRLissuer
); i
++) {
1383 GENERAL_NAME
*gen
= sk_GENERAL_NAME_value(dp
->CRLissuer
, i
);
1384 if (gen
->type
!= GEN_DIRNAME
)
1386 if (!X509_NAME_cmp(gen
->d
.directoryName
, nm
))
1392 /* Check CRLDP and IDP */
1394 static int crl_crldp_check(X509
*x
, X509_CRL
*crl
, int crl_score
,
1395 unsigned int *preasons
)
1398 if (crl
->idp_flags
& IDP_ONLYATTR
)
1400 if (x
->ex_flags
& EXFLAG_CA
) {
1401 if (crl
->idp_flags
& IDP_ONLYUSER
)
1404 if (crl
->idp_flags
& IDP_ONLYCA
)
1407 *preasons
= crl
->idp_reasons
;
1408 for (i
= 0; i
< sk_DIST_POINT_num(x
->crldp
); i
++) {
1409 DIST_POINT
*dp
= sk_DIST_POINT_value(x
->crldp
, i
);
1410 if (crldp_check_crlissuer(dp
, crl
, crl_score
)) {
1411 if (!crl
->idp
|| idp_check_dp(dp
->distpoint
, crl
->idp
->distpoint
)) {
1412 *preasons
&= dp
->dp_reasons
;
1417 if ((!crl
->idp
|| !crl
->idp
->distpoint
)
1418 && (crl_score
& CRL_SCORE_ISSUER_NAME
))
1424 * Retrieve CRL corresponding to current certificate. If deltas enabled try
1425 * to find a delta CRL too
1428 static int get_crl_delta(X509_STORE_CTX
*ctx
,
1429 X509_CRL
**pcrl
, X509_CRL
**pdcrl
, X509
*x
)
1432 X509
*issuer
= NULL
;
1434 unsigned int reasons
;
1435 X509_CRL
*crl
= NULL
, *dcrl
= NULL
;
1436 STACK_OF(X509_CRL
) *skcrl
;
1437 X509_NAME
*nm
= X509_get_issuer_name(x
);
1438 reasons
= ctx
->current_reasons
;
1439 ok
= get_crl_sk(ctx
, &crl
, &dcrl
,
1440 &issuer
, &crl_score
, &reasons
, ctx
->crls
);
1445 /* Lookup CRLs from store */
1447 skcrl
= ctx
->lookup_crls(ctx
, nm
);
1449 /* If no CRLs found and a near match from get_crl_sk use that */
1453 get_crl_sk(ctx
, &crl
, &dcrl
, &issuer
, &crl_score
, &reasons
, skcrl
);
1455 sk_X509_CRL_pop_free(skcrl
, X509_CRL_free
);
1459 /* If we got any kind of CRL use it and return success */
1461 ctx
->current_issuer
= issuer
;
1462 ctx
->current_crl_score
= crl_score
;
1463 ctx
->current_reasons
= reasons
;
1472 /* Check CRL validity */
1473 static int check_crl(X509_STORE_CTX
*ctx
, X509_CRL
*crl
)
1475 X509
*issuer
= NULL
;
1476 EVP_PKEY
*ikey
= NULL
;
1477 int ok
= 0, chnum
, cnum
;
1478 cnum
= ctx
->error_depth
;
1479 chnum
= sk_X509_num(ctx
->chain
) - 1;
1480 /* if we have an alternative CRL issuer cert use that */
1481 if (ctx
->current_issuer
)
1482 issuer
= ctx
->current_issuer
;
1485 * Else find CRL issuer: if not last certificate then issuer is next
1486 * certificate in chain.
1488 else if (cnum
< chnum
)
1489 issuer
= sk_X509_value(ctx
->chain
, cnum
+ 1);
1491 issuer
= sk_X509_value(ctx
->chain
, chnum
);
1492 /* If not self signed, can't check signature */
1493 if (!ctx
->check_issued(ctx
, issuer
, issuer
)) {
1494 ctx
->error
= X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
;
1495 ok
= ctx
->verify_cb(0, ctx
);
1503 * Skip most tests for deltas because they have already been done
1505 if (!crl
->base_crl_number
) {
1506 /* Check for cRLSign bit if keyUsage present */
1507 if ((issuer
->ex_flags
& EXFLAG_KUSAGE
) &&
1508 !(issuer
->ex_kusage
& KU_CRL_SIGN
)) {
1509 ctx
->error
= X509_V_ERR_KEYUSAGE_NO_CRL_SIGN
;
1510 ok
= ctx
->verify_cb(0, ctx
);
1515 if (!(ctx
->current_crl_score
& CRL_SCORE_SCOPE
)) {
1516 ctx
->error
= X509_V_ERR_DIFFERENT_CRL_SCOPE
;
1517 ok
= ctx
->verify_cb(0, ctx
);
1522 if (!(ctx
->current_crl_score
& CRL_SCORE_SAME_PATH
)) {
1523 if (check_crl_path(ctx
, ctx
->current_issuer
) <= 0) {
1524 ctx
->error
= X509_V_ERR_CRL_PATH_VALIDATION_ERROR
;
1525 ok
= ctx
->verify_cb(0, ctx
);
1531 if (crl
->idp_flags
& IDP_INVALID
) {
1532 ctx
->error
= X509_V_ERR_INVALID_EXTENSION
;
1533 ok
= ctx
->verify_cb(0, ctx
);
1540 if (!(ctx
->current_crl_score
& CRL_SCORE_TIME
)) {
1541 ok
= check_crl_time(ctx
, crl
, 1);
1546 /* Attempt to get issuer certificate public key */
1547 ikey
= X509_get_pubkey(issuer
);
1550 ctx
->error
= X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
;
1551 ok
= ctx
->verify_cb(0, ctx
);
1556 rv
= X509_CRL_check_suiteb(crl
, ikey
, ctx
->param
->flags
);
1557 if (rv
!= X509_V_OK
) {
1559 ok
= ctx
->verify_cb(0, ctx
);
1563 /* Verify CRL signature */
1564 if (X509_CRL_verify(crl
, ikey
) <= 0) {
1565 ctx
->error
= X509_V_ERR_CRL_SIGNATURE_FAILURE
;
1566 ok
= ctx
->verify_cb(0, ctx
);
1576 EVP_PKEY_free(ikey
);
1580 /* Check certificate against CRL */
1581 static int cert_crl(X509_STORE_CTX
*ctx
, X509_CRL
*crl
, X509
*x
)
1586 * The rules changed for this... previously if a CRL contained unhandled
1587 * critical extensions it could still be used to indicate a certificate
1588 * was revoked. This has since been changed since critical extension can
1589 * change the meaning of CRL entries.
1591 if (!(ctx
->param
->flags
& X509_V_FLAG_IGNORE_CRITICAL
)
1592 && (crl
->flags
& EXFLAG_CRITICAL
)) {
1593 ctx
->error
= X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION
;
1594 ok
= ctx
->verify_cb(0, ctx
);
1599 * Look for serial number of certificate in CRL If found make sure reason
1600 * is not removeFromCRL.
1602 if (X509_CRL_get0_by_cert(crl
, &rev
, x
)) {
1603 if (rev
->reason
== CRL_REASON_REMOVE_FROM_CRL
)
1605 ctx
->error
= X509_V_ERR_CERT_REVOKED
;
1606 ok
= ctx
->verify_cb(0, ctx
);
1614 static int check_policy(X509_STORE_CTX
*ctx
)
1619 ret
= X509_policy_check(&ctx
->tree
, &ctx
->explicit_policy
, ctx
->chain
,
1620 ctx
->param
->policies
, ctx
->param
->flags
);
1622 X509err(X509_F_CHECK_POLICY
, ERR_R_MALLOC_FAILURE
);
1625 /* Invalid or inconsistent extensions */
1628 * Locate certificates with bad extensions and notify callback.
1632 for (i
= 1; i
< sk_X509_num(ctx
->chain
); i
++) {
1633 x
= sk_X509_value(ctx
->chain
, i
);
1634 if (!(x
->ex_flags
& EXFLAG_INVALID_POLICY
))
1636 ctx
->current_cert
= x
;
1637 ctx
->error
= X509_V_ERR_INVALID_POLICY_EXTENSION
;
1638 if (!ctx
->verify_cb(0, ctx
))
1644 ctx
->current_cert
= NULL
;
1645 ctx
->error
= X509_V_ERR_NO_EXPLICIT_POLICY
;
1646 return ctx
->verify_cb(0, ctx
);
1649 if (ctx
->param
->flags
& X509_V_FLAG_NOTIFY_POLICY
) {
1650 ctx
->current_cert
= NULL
;
1651 ctx
->error
= X509_V_OK
;
1652 if (!ctx
->verify_cb(2, ctx
))
1659 static int check_cert_time(X509_STORE_CTX
*ctx
, X509
*x
)
1664 if (ctx
->param
->flags
& X509_V_FLAG_USE_CHECK_TIME
)
1665 ptime
= &ctx
->param
->check_time
;
1669 i
= X509_cmp_time(X509_get_notBefore(x
), ptime
);
1671 ctx
->error
= X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
;
1672 ctx
->current_cert
= x
;
1673 if (!ctx
->verify_cb(0, ctx
))
1678 ctx
->error
= X509_V_ERR_CERT_NOT_YET_VALID
;
1679 ctx
->current_cert
= x
;
1680 if (!ctx
->verify_cb(0, ctx
))
1684 i
= X509_cmp_time(X509_get_notAfter(x
), ptime
);
1686 ctx
->error
= X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
;
1687 ctx
->current_cert
= x
;
1688 if (!ctx
->verify_cb(0, ctx
))
1693 ctx
->error
= X509_V_ERR_CERT_HAS_EXPIRED
;
1694 ctx
->current_cert
= x
;
1695 if (!ctx
->verify_cb(0, ctx
))
1702 static int internal_verify(X509_STORE_CTX
*ctx
)
1706 EVP_PKEY
*pkey
= NULL
;
1707 int (*cb
) (int xok
, X509_STORE_CTX
*xctx
);
1709 cb
= ctx
->verify_cb
;
1711 n
= sk_X509_num(ctx
->chain
);
1712 ctx
->error_depth
= n
- 1;
1714 xi
= sk_X509_value(ctx
->chain
, n
);
1716 if (ctx
->check_issued(ctx
, xi
, xi
))
1719 if (ctx
->param
->flags
& X509_V_FLAG_PARTIAL_CHAIN
) {
1724 ctx
->error
= X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
;
1725 ctx
->current_cert
= xi
;
1730 ctx
->error_depth
= n
;
1731 xs
= sk_X509_value(ctx
->chain
, n
);
1735 /* ctx->error=0; not needed */
1737 ctx
->error_depth
= n
;
1740 * Skip signature check for self signed certificates unless
1741 * explicitly asked for. It doesn't add any security and just wastes
1746 || (ctx
->param
->flags
& X509_V_FLAG_CHECK_SS_SIGNATURE
))) {
1747 if ((pkey
= X509_get_pubkey(xi
)) == NULL
) {
1748 ctx
->error
= X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
;
1749 ctx
->current_cert
= xi
;
1750 ok
= (*cb
) (0, ctx
);
1753 } else if (X509_verify(xs
, pkey
) <= 0) {
1754 ctx
->error
= X509_V_ERR_CERT_SIGNATURE_FAILURE
;
1755 ctx
->current_cert
= xs
;
1756 ok
= (*cb
) (0, ctx
);
1758 EVP_PKEY_free(pkey
);
1762 EVP_PKEY_free(pkey
);
1769 ok
= check_cert_time(ctx
, xs
);
1773 /* The last error (if any) is still in the error value */
1774 ctx
->current_issuer
= xi
;
1775 ctx
->current_cert
= xs
;
1776 ok
= (*cb
) (1, ctx
);
1783 xs
= sk_X509_value(ctx
->chain
, n
);
1791 int X509_cmp_current_time(const ASN1_TIME
*ctm
)
1793 return X509_cmp_time(ctm
, NULL
);
1796 int X509_cmp_time(const ASN1_TIME
*ctm
, time_t *cmp_time
)
1801 char buff1
[24], buff2
[24], *p
;
1802 int i
, j
, remaining
;
1805 remaining
= ctm
->length
;
1806 str
= (char *)ctm
->data
;
1808 * Note that the following (historical) code allows much more slack in the
1809 * time format than RFC5280. In RFC5280, the representation is fixed:
1810 * UTCTime: YYMMDDHHMMSSZ
1811 * GeneralizedTime: YYYYMMDDHHMMSSZ
1813 if (ctm
->type
== V_ASN1_UTCTIME
) {
1814 /* YYMMDDHHMM[SS]Z or YYMMDDHHMM[SS](+-)hhmm */
1815 int min_length
= sizeof("YYMMDDHHMMZ") - 1;
1816 int max_length
= sizeof("YYMMDDHHMMSS+hhmm") - 1;
1817 if (remaining
< min_length
|| remaining
> max_length
)
1824 /* YYYYMMDDHHMM[SS[.fff]]Z or YYYYMMDDHHMM[SS[.f[f[f]]]](+-)hhmm */
1825 int min_length
= sizeof("YYYYMMDDHHMMZ") - 1;
1826 int max_length
= sizeof("YYYYMMDDHHMMSS.fff+hhmm") - 1;
1827 if (remaining
< min_length
|| remaining
> max_length
)
1835 if ((*str
== 'Z') || (*str
== '-') || (*str
== '+')) {
1846 * Skip any (up to three) fractional seconds...
1847 * TODO(emilia): in RFC5280, fractional seconds are forbidden.
1848 * Can we just kill them altogether?
1850 if (remaining
&& *str
== '.') {
1853 for (i
= 0; i
< 3 && remaining
; i
++, str
++, remaining
--) {
1854 if (*str
< '0' || *str
> '9')
1863 /* We now need either a terminating 'Z' or an offset. */
1872 if ((*str
!= '+') && (*str
!= '-'))
1874 /* Historical behaviour: the (+-)hhmm offset is forbidden in RFC5280. */
1877 if (str
[1] < '0' || str
[1] > '9' || str
[2] < '0' || str
[2] > '9' ||
1878 str
[3] < '0' || str
[3] > '9' || str
[4] < '0' || str
[4] > '9')
1880 offset
= ((str
[1] - '0') * 10 + (str
[2] - '0')) * 60;
1881 offset
+= (str
[3] - '0') * 10 + (str
[4] - '0');
1885 atm
.type
= ctm
->type
;
1887 atm
.length
= sizeof(buff2
);
1888 atm
.data
= (unsigned char *)buff2
;
1890 if (X509_time_adj(&atm
, offset
* 60, cmp_time
) == NULL
)
1893 if (ctm
->type
== V_ASN1_UTCTIME
) {
1894 i
= (buff1
[0] - '0') * 10 + (buff1
[1] - '0');
1896 i
+= 100; /* cf. RFC 2459 */
1897 j
= (buff2
[0] - '0') * 10 + (buff2
[1] - '0');
1906 i
= strcmp(buff1
, buff2
);
1907 if (i
== 0) /* wait a second then return younger :-) */
1913 ASN1_TIME
*X509_gmtime_adj(ASN1_TIME
*s
, long adj
)
1915 return X509_time_adj(s
, adj
, NULL
);
1918 ASN1_TIME
*X509_time_adj(ASN1_TIME
*s
, long offset_sec
, time_t *in_tm
)
1920 return X509_time_adj_ex(s
, 0, offset_sec
, in_tm
);
1923 ASN1_TIME
*X509_time_adj_ex(ASN1_TIME
*s
,
1924 int offset_day
, long offset_sec
, time_t *in_tm
)
1933 if (s
&& !(s
->flags
& ASN1_STRING_FLAG_MSTRING
)) {
1934 if (s
->type
== V_ASN1_UTCTIME
)
1935 return ASN1_UTCTIME_adj(s
, t
, offset_day
, offset_sec
);
1936 if (s
->type
== V_ASN1_GENERALIZEDTIME
)
1937 return ASN1_GENERALIZEDTIME_adj(s
, t
, offset_day
, offset_sec
);
1939 return ASN1_TIME_adj(s
, t
, offset_day
, offset_sec
);
1942 int X509_get_pubkey_parameters(EVP_PKEY
*pkey
, STACK_OF(X509
) *chain
)
1944 EVP_PKEY
*ktmp
= NULL
, *ktmp2
;
1947 if ((pkey
!= NULL
) && !EVP_PKEY_missing_parameters(pkey
))
1950 for (i
= 0; i
< sk_X509_num(chain
); i
++) {
1951 ktmp
= X509_get_pubkey(sk_X509_value(chain
, i
));
1953 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS
,
1954 X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY
);
1957 if (!EVP_PKEY_missing_parameters(ktmp
))
1960 EVP_PKEY_free(ktmp
);
1965 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS
,
1966 X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN
);
1970 /* first, populate the other certs */
1971 for (j
= i
- 1; j
>= 0; j
--) {
1972 ktmp2
= X509_get_pubkey(sk_X509_value(chain
, j
));
1973 EVP_PKEY_copy_parameters(ktmp2
, ktmp
);
1974 EVP_PKEY_free(ktmp2
);
1978 EVP_PKEY_copy_parameters(pkey
, ktmp
);
1979 EVP_PKEY_free(ktmp
);
1983 /* Make a delta CRL as the diff between two full CRLs */
1985 X509_CRL
*X509_CRL_diff(X509_CRL
*base
, X509_CRL
*newer
,
1986 EVP_PKEY
*skey
, const EVP_MD
*md
, unsigned int flags
)
1988 X509_CRL
*crl
= NULL
;
1990 STACK_OF(X509_REVOKED
) *revs
= NULL
;
1991 /* CRLs can't be delta already */
1992 if (base
->base_crl_number
|| newer
->base_crl_number
) {
1993 X509err(X509_F_X509_CRL_DIFF
, X509_R_CRL_ALREADY_DELTA
);
1996 /* Base and new CRL must have a CRL number */
1997 if (!base
->crl_number
|| !newer
->crl_number
) {
1998 X509err(X509_F_X509_CRL_DIFF
, X509_R_NO_CRL_NUMBER
);
2001 /* Issuer names must match */
2002 if (X509_NAME_cmp(X509_CRL_get_issuer(base
), X509_CRL_get_issuer(newer
))) {
2003 X509err(X509_F_X509_CRL_DIFF
, X509_R_ISSUER_MISMATCH
);
2006 /* AKID and IDP must match */
2007 if (!crl_extension_match(base
, newer
, NID_authority_key_identifier
)) {
2008 X509err(X509_F_X509_CRL_DIFF
, X509_R_AKID_MISMATCH
);
2011 if (!crl_extension_match(base
, newer
, NID_issuing_distribution_point
)) {
2012 X509err(X509_F_X509_CRL_DIFF
, X509_R_IDP_MISMATCH
);
2015 /* Newer CRL number must exceed full CRL number */
2016 if (ASN1_INTEGER_cmp(newer
->crl_number
, base
->crl_number
) <= 0) {
2017 X509err(X509_F_X509_CRL_DIFF
, X509_R_NEWER_CRL_NOT_NEWER
);
2020 /* CRLs must verify */
2021 if (skey
&& (X509_CRL_verify(base
, skey
) <= 0 ||
2022 X509_CRL_verify(newer
, skey
) <= 0)) {
2023 X509err(X509_F_X509_CRL_DIFF
, X509_R_CRL_VERIFY_FAILURE
);
2026 /* Create new CRL */
2027 crl
= X509_CRL_new();
2028 if (!crl
|| !X509_CRL_set_version(crl
, 1))
2030 /* Set issuer name */
2031 if (!X509_CRL_set_issuer_name(crl
, X509_CRL_get_issuer(newer
)))
2034 if (!X509_CRL_set_lastUpdate(crl
, X509_CRL_get_lastUpdate(newer
)))
2036 if (!X509_CRL_set_nextUpdate(crl
, X509_CRL_get_nextUpdate(newer
)))
2039 /* Set base CRL number: must be critical */
2041 if (!X509_CRL_add1_ext_i2d(crl
, NID_delta_crl
, base
->crl_number
, 1, 0))
2045 * Copy extensions across from newest CRL to delta: this will set CRL
2046 * number to correct value too.
2049 for (i
= 0; i
< X509_CRL_get_ext_count(newer
); i
++) {
2050 X509_EXTENSION
*ext
;
2051 ext
= X509_CRL_get_ext(newer
, i
);
2052 if (!X509_CRL_add_ext(crl
, ext
, -1))
2056 /* Go through revoked entries, copying as needed */
2058 revs
= X509_CRL_get_REVOKED(newer
);
2060 for (i
= 0; i
< sk_X509_REVOKED_num(revs
); i
++) {
2061 X509_REVOKED
*rvn
, *rvtmp
;
2062 rvn
= sk_X509_REVOKED_value(revs
, i
);
2064 * Add only if not also in base. TODO: need something cleverer here
2065 * for some more complex CRLs covering multiple CAs.
2067 if (!X509_CRL_get0_by_serial(base
, &rvtmp
, rvn
->serialNumber
)) {
2068 rvtmp
= X509_REVOKED_dup(rvn
);
2071 if (!X509_CRL_add0_revoked(crl
, rvtmp
)) {
2072 X509_REVOKED_free(rvtmp
);
2077 /* TODO: optionally prune deleted entries */
2079 if (skey
&& md
&& !X509_CRL_sign(crl
, skey
, md
))
2085 X509err(X509_F_X509_CRL_DIFF
, ERR_R_MALLOC_FAILURE
);
2091 int X509_STORE_CTX_get_ex_new_index(long argl
, void *argp
,
2092 CRYPTO_EX_new
*new_func
,
2093 CRYPTO_EX_dup
*dup_func
,
2094 CRYPTO_EX_free
*free_func
)
2097 * This function is (usually) called only once, by
2098 * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c).
2100 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509_STORE_CTX
, argl
, argp
,
2101 new_func
, dup_func
, free_func
);
2104 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX
*ctx
, int idx
, void *data
)
2106 return CRYPTO_set_ex_data(&ctx
->ex_data
, idx
, data
);
2109 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX
*ctx
, int idx
)
2111 return CRYPTO_get_ex_data(&ctx
->ex_data
, idx
);
2114 int X509_STORE_CTX_get_error(X509_STORE_CTX
*ctx
)
2119 void X509_STORE_CTX_set_error(X509_STORE_CTX
*ctx
, int err
)
2124 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX
*ctx
)
2126 return ctx
->error_depth
;
2129 X509
*X509_STORE_CTX_get_current_cert(X509_STORE_CTX
*ctx
)
2131 return ctx
->current_cert
;
2134 STACK_OF(X509
) *X509_STORE_CTX_get_chain(X509_STORE_CTX
*ctx
)
2139 STACK_OF(X509
) *X509_STORE_CTX_get1_chain(X509_STORE_CTX
*ctx
)
2143 return X509_chain_up_ref(ctx
->chain
);
2146 X509
*X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX
*ctx
)
2148 return ctx
->current_issuer
;
2151 X509_CRL
*X509_STORE_CTX_get0_current_crl(X509_STORE_CTX
*ctx
)
2153 return ctx
->current_crl
;
2156 X509_STORE_CTX
*X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX
*ctx
)
2161 void X509_STORE_CTX_set_cert(X509_STORE_CTX
*ctx
, X509
*x
)
2166 void X509_STORE_CTX_set_chain(X509_STORE_CTX
*ctx
, STACK_OF(X509
) *sk
)
2168 ctx
->untrusted
= sk
;
2171 void X509_STORE_CTX_set0_crls(X509_STORE_CTX
*ctx
, STACK_OF(X509_CRL
) *sk
)
2176 int X509_STORE_CTX_set_purpose(X509_STORE_CTX
*ctx
, int purpose
)
2178 return X509_STORE_CTX_purpose_inherit(ctx
, 0, purpose
, 0);
2181 int X509_STORE_CTX_set_trust(X509_STORE_CTX
*ctx
, int trust
)
2183 return X509_STORE_CTX_purpose_inherit(ctx
, 0, 0, trust
);
2187 * This function is used to set the X509_STORE_CTX purpose and trust values.
2188 * This is intended to be used when another structure has its own trust and
2189 * purpose values which (if set) will be inherited by the ctx. If they aren't
2190 * set then we will usually have a default purpose in mind which should then
2191 * be used to set the trust value. An example of this is SSL use: an SSL
2192 * structure will have its own purpose and trust settings which the
2193 * application can set: if they aren't set then we use the default of SSL
2197 int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX
*ctx
, int def_purpose
,
2198 int purpose
, int trust
)
2201 /* If purpose not set use default */
2203 purpose
= def_purpose
;
2204 /* If we have a purpose then check it is valid */
2207 idx
= X509_PURPOSE_get_by_id(purpose
);
2209 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT
,
2210 X509_R_UNKNOWN_PURPOSE_ID
);
2213 ptmp
= X509_PURPOSE_get0(idx
);
2214 if (ptmp
->trust
== X509_TRUST_DEFAULT
) {
2215 idx
= X509_PURPOSE_get_by_id(def_purpose
);
2217 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT
,
2218 X509_R_UNKNOWN_PURPOSE_ID
);
2221 ptmp
= X509_PURPOSE_get0(idx
);
2223 /* If trust not set then get from purpose default */
2225 trust
= ptmp
->trust
;
2228 idx
= X509_TRUST_get_by_id(trust
);
2230 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT
,
2231 X509_R_UNKNOWN_TRUST_ID
);
2236 if (purpose
&& !ctx
->param
->purpose
)
2237 ctx
->param
->purpose
= purpose
;
2238 if (trust
&& !ctx
->param
->trust
)
2239 ctx
->param
->trust
= trust
;
2243 X509_STORE_CTX
*X509_STORE_CTX_new(void)
2245 X509_STORE_CTX
*ctx
;
2246 ctx
= (X509_STORE_CTX
*)OPENSSL_malloc(sizeof(X509_STORE_CTX
));
2248 X509err(X509_F_X509_STORE_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2251 memset(ctx
, 0, sizeof(X509_STORE_CTX
));
2255 void X509_STORE_CTX_free(X509_STORE_CTX
*ctx
)
2259 X509_STORE_CTX_cleanup(ctx
);
2263 int X509_STORE_CTX_init(X509_STORE_CTX
*ctx
, X509_STORE
*store
, X509
*x509
,
2264 STACK_OF(X509
) *chain
)
2268 ctx
->current_method
= 0;
2270 ctx
->untrusted
= chain
;
2272 ctx
->last_untrusted
= 0;
2273 ctx
->other_ctx
= NULL
;
2277 ctx
->explicit_policy
= 0;
2278 ctx
->error_depth
= 0;
2279 ctx
->current_cert
= NULL
;
2280 ctx
->current_issuer
= NULL
;
2281 ctx
->current_crl
= NULL
;
2282 ctx
->current_crl_score
= 0;
2283 ctx
->current_reasons
= 0;
2286 /* Zero ex_data to make sure we're cleanup-safe */
2287 memset(&ctx
->ex_data
, 0, sizeof(ctx
->ex_data
));
2289 ctx
->param
= X509_VERIFY_PARAM_new();
2291 X509err(X509_F_X509_STORE_CTX_INIT
, ERR_R_MALLOC_FAILURE
);
2296 * Inherit callbacks and flags from X509_STORE if not set use defaults.
2299 ret
= X509_VERIFY_PARAM_inherit(ctx
->param
, store
->param
);
2301 ctx
->param
->inh_flags
|= X509_VP_FLAG_DEFAULT
| X509_VP_FLAG_ONCE
;
2304 ctx
->verify_cb
= store
->verify_cb
;
2305 /* Seems to always be 0 in OpenSSL, else must be idempotent */
2306 ctx
->cleanup
= store
->cleanup
;
2311 ret
= X509_VERIFY_PARAM_inherit(ctx
->param
,
2312 X509_VERIFY_PARAM_lookup("default"));
2315 X509err(X509_F_X509_STORE_CTX_INIT
, ERR_R_MALLOC_FAILURE
);
2319 if (store
&& store
->check_issued
)
2320 ctx
->check_issued
= store
->check_issued
;
2322 ctx
->check_issued
= check_issued
;
2324 if (store
&& store
->get_issuer
)
2325 ctx
->get_issuer
= store
->get_issuer
;
2327 ctx
->get_issuer
= X509_STORE_CTX_get1_issuer
;
2329 if (store
&& store
->verify_cb
)
2330 ctx
->verify_cb
= store
->verify_cb
;
2332 ctx
->verify_cb
= null_callback
;
2334 if (store
&& store
->verify
)
2335 ctx
->verify
= store
->verify
;
2337 ctx
->verify
= internal_verify
;
2339 if (store
&& store
->check_revocation
)
2340 ctx
->check_revocation
= store
->check_revocation
;
2342 ctx
->check_revocation
= check_revocation
;
2344 if (store
&& store
->get_crl
)
2345 ctx
->get_crl
= store
->get_crl
;
2347 ctx
->get_crl
= NULL
;
2349 if (store
&& store
->check_crl
)
2350 ctx
->check_crl
= store
->check_crl
;
2352 ctx
->check_crl
= check_crl
;
2354 if (store
&& store
->cert_crl
)
2355 ctx
->cert_crl
= store
->cert_crl
;
2357 ctx
->cert_crl
= cert_crl
;
2359 if (store
&& store
->lookup_certs
)
2360 ctx
->lookup_certs
= store
->lookup_certs
;
2362 ctx
->lookup_certs
= X509_STORE_get1_certs
;
2364 if (store
&& store
->lookup_crls
)
2365 ctx
->lookup_crls
= store
->lookup_crls
;
2367 ctx
->lookup_crls
= X509_STORE_get1_crls
;
2369 ctx
->check_policy
= check_policy
;
2371 if (CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE_CTX
, ctx
,
2374 X509err(X509_F_X509_STORE_CTX_INIT
, ERR_R_MALLOC_FAILURE
);
2378 * On error clean up allocated storage, if the store context was not
2379 * allocated with X509_STORE_CTX_new() this is our last chance to do so.
2381 X509_STORE_CTX_cleanup(ctx
);
2386 * Set alternative lookup method: just a STACK of trusted certificates. This
2387 * avoids X509_STORE nastiness where it isn't needed.
2390 void X509_STORE_CTX_trusted_stack(X509_STORE_CTX
*ctx
, STACK_OF(X509
) *sk
)
2392 ctx
->other_ctx
= sk
;
2393 ctx
->get_issuer
= get_issuer_sk
;
2396 void X509_STORE_CTX_cleanup(X509_STORE_CTX
*ctx
)
2399 * We need to be idempotent because, unfortunately, free() also calls
2400 * cleanup(), so the natural call sequence new(), init(), cleanup(), free()
2401 * calls cleanup() for the same object twice! Thus we must zero the
2402 * pointers below after they're freed!
2404 /* Seems to always be 0 in OpenSSL, do this at most once. */
2405 if (ctx
->cleanup
!= NULL
) {
2407 ctx
->cleanup
= NULL
;
2409 if (ctx
->param
!= NULL
) {
2410 if (ctx
->parent
== NULL
)
2411 X509_VERIFY_PARAM_free(ctx
->param
);
2414 if (ctx
->tree
!= NULL
) {
2415 X509_policy_tree_free(ctx
->tree
);
2418 if (ctx
->chain
!= NULL
) {
2419 sk_X509_pop_free(ctx
->chain
, X509_free
);
2422 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE_CTX
, ctx
, &(ctx
->ex_data
));
2423 memset(&ctx
->ex_data
, 0, sizeof(CRYPTO_EX_DATA
));
2426 void X509_STORE_CTX_set_depth(X509_STORE_CTX
*ctx
, int depth
)
2428 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2431 void X509_STORE_CTX_set_flags(X509_STORE_CTX
*ctx
, unsigned long flags
)
2433 X509_VERIFY_PARAM_set_flags(ctx
->param
, flags
);
2436 void X509_STORE_CTX_set_time(X509_STORE_CTX
*ctx
, unsigned long flags
,
2439 X509_VERIFY_PARAM_set_time(ctx
->param
, t
);
2442 void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX
*ctx
,
2443 int (*verify_cb
) (int, X509_STORE_CTX
*))
2445 ctx
->verify_cb
= verify_cb
;
2448 X509_POLICY_TREE
*X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX
*ctx
)
2453 int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX
*ctx
)
2455 return ctx
->explicit_policy
;
2458 int X509_STORE_CTX_set_default(X509_STORE_CTX
*ctx
, const char *name
)
2460 const X509_VERIFY_PARAM
*param
;
2461 param
= X509_VERIFY_PARAM_lookup(name
);
2464 return X509_VERIFY_PARAM_inherit(ctx
->param
, param
);
2467 X509_VERIFY_PARAM
*X509_STORE_CTX_get0_param(X509_STORE_CTX
*ctx
)
2472 void X509_STORE_CTX_set0_param(X509_STORE_CTX
*ctx
, X509_VERIFY_PARAM
*param
)
2475 X509_VERIFY_PARAM_free(ctx
->param
);
2479 IMPLEMENT_STACK_OF(X509
)
2481 IMPLEMENT_ASN1_SET_OF(X509
)
2483 IMPLEMENT_STACK_OF(X509_NAME
)
2485 IMPLEMENT_STACK_OF(X509_ATTRIBUTE
)
2487 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE
)