2 * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include "internal/numbers.h"
13 #include <openssl/x509v3.h>
14 #include <openssl/x509_vfy.h>
15 #include "internal/x509_int.h"
17 static void x509v3_cache_extensions(X509 *x);
19 static int check_ssl_ca(const X509 *x);
20 static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
22 static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
24 static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
26 static int purpose_smime(const X509 *x, int ca);
27 static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
29 static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
31 static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
33 static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
35 static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca);
36 static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca);
38 static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b);
39 static void xptable_free(X509_PURPOSE *p);
41 static X509_PURPOSE xstandard[] = {
42 {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0,
43 check_purpose_ssl_client, "SSL client", "sslclient", NULL},
44 {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
45 check_purpose_ssl_server, "SSL server", "sslserver", NULL},
46 {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
47 check_purpose_ns_ssl_server, "Netscape SSL server", "nssslserver", NULL},
48 {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign,
49 "S/MIME signing", "smimesign", NULL},
50 {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0,
51 check_purpose_smime_encrypt, "S/MIME encryption", "smimeencrypt", NULL},
52 {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign,
53 "CRL signing", "crlsign", NULL},
54 {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, "Any Purpose", "any",
56 {X509_PURPOSE_OCSP_HELPER, X509_TRUST_COMPAT, 0, ocsp_helper,
57 "OCSP helper", "ocsphelper", NULL},
58 {X509_PURPOSE_TIMESTAMP_SIGN, X509_TRUST_TSA, 0,
59 check_purpose_timestamp_sign, "Time Stamp signing", "timestampsign",
63 #define X509_PURPOSE_COUNT OSSL_NELEM(xstandard)
65 static STACK_OF(X509_PURPOSE) *xptable = NULL;
67 static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b)
69 return (*a)->purpose - (*b)->purpose;
73 * As much as I'd like to make X509_check_purpose use a "const" X509* I
74 * really can't because it does recalculate hashes and do other non-const
77 int X509_check_purpose(X509 *x, int id, int ca)
80 const X509_PURPOSE *pt;
82 x509v3_cache_extensions(x);
84 /* Return if side-effect only call */
87 idx = X509_PURPOSE_get_by_id(id);
90 pt = X509_PURPOSE_get0(idx);
91 return pt->check_purpose(pt, x, ca);
94 int X509_PURPOSE_set(int *p, int purpose)
96 if (X509_PURPOSE_get_by_id(purpose) == -1) {
97 X509V3err(X509V3_F_X509_PURPOSE_SET, X509V3_R_INVALID_PURPOSE);
104 int X509_PURPOSE_get_count(void)
107 return X509_PURPOSE_COUNT;
108 return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT;
111 X509_PURPOSE *X509_PURPOSE_get0(int idx)
115 if (idx < (int)X509_PURPOSE_COUNT)
116 return xstandard + idx;
117 return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT);
120 int X509_PURPOSE_get_by_sname(const char *sname)
124 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
125 xptmp = X509_PURPOSE_get0(i);
126 if (strcmp(xptmp->sname, sname) == 0)
132 int X509_PURPOSE_get_by_id(int purpose)
137 if ((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX))
138 return purpose - X509_PURPOSE_MIN;
141 tmp.purpose = purpose;
142 idx = sk_X509_PURPOSE_find(xptable, &tmp);
145 return idx + X509_PURPOSE_COUNT;
148 int X509_PURPOSE_add(int id, int trust, int flags,
149 int (*ck) (const X509_PURPOSE *, const X509 *, int),
150 const char *name, const char *sname, void *arg)
155 * This is set according to what we change: application can't set it
157 flags &= ~X509_PURPOSE_DYNAMIC;
158 /* This will always be set for application modified trust entries */
159 flags |= X509_PURPOSE_DYNAMIC_NAME;
160 /* Get existing entry if any */
161 idx = X509_PURPOSE_get_by_id(id);
162 /* Need a new entry */
164 if ((ptmp = OPENSSL_malloc(sizeof(*ptmp))) == NULL) {
165 X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE);
168 ptmp->flags = X509_PURPOSE_DYNAMIC;
170 ptmp = X509_PURPOSE_get0(idx);
172 /* OPENSSL_free existing name if dynamic */
173 if (ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) {
174 OPENSSL_free(ptmp->name);
175 OPENSSL_free(ptmp->sname);
177 /* dup supplied name */
178 ptmp->name = OPENSSL_strdup(name);
179 ptmp->sname = OPENSSL_strdup(sname);
180 if (!ptmp->name || !ptmp->sname) {
181 X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE);
184 /* Keep the dynamic flag of existing entry */
185 ptmp->flags &= X509_PURPOSE_DYNAMIC;
186 /* Set all other flags */
187 ptmp->flags |= flags;
191 ptmp->check_purpose = ck;
192 ptmp->usr_data = arg;
194 /* If its a new entry manage the dynamic table */
197 && (xptable = sk_X509_PURPOSE_new(xp_cmp)) == NULL) {
198 X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE);
201 if (!sk_X509_PURPOSE_push(xptable, ptmp)) {
202 X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE);
209 OPENSSL_free(ptmp->name);
210 OPENSSL_free(ptmp->sname);
216 static void xptable_free(X509_PURPOSE *p)
220 if (p->flags & X509_PURPOSE_DYNAMIC) {
221 if (p->flags & X509_PURPOSE_DYNAMIC_NAME) {
222 OPENSSL_free(p->name);
223 OPENSSL_free(p->sname);
229 void X509_PURPOSE_cleanup(void)
231 sk_X509_PURPOSE_pop_free(xptable, xptable_free);
235 int X509_PURPOSE_get_id(const X509_PURPOSE *xp)
240 char *X509_PURPOSE_get0_name(const X509_PURPOSE *xp)
245 char *X509_PURPOSE_get0_sname(const X509_PURPOSE *xp)
250 int X509_PURPOSE_get_trust(const X509_PURPOSE *xp)
255 static int nid_cmp(const int *a, const int *b)
260 DECLARE_OBJ_BSEARCH_CMP_FN(int, int, nid);
261 IMPLEMENT_OBJ_BSEARCH_CMP_FN(int, int, nid);
263 int X509_supported_extension(X509_EXTENSION *ex)
266 * This table is a list of the NIDs of supported extensions: that is
267 * those which are used by the verify process. If an extension is
268 * critical and doesn't appear in this list then the verify process will
269 * normally reject the certificate. The list must be kept in numerical
270 * order because it will be searched using bsearch.
273 static const int supported_nids[] = {
274 NID_netscape_cert_type, /* 71 */
275 NID_key_usage, /* 83 */
276 NID_subject_alt_name, /* 85 */
277 NID_basic_constraints, /* 87 */
278 NID_certificate_policies, /* 89 */
279 NID_crl_distribution_points, /* 103 */
280 NID_ext_key_usage, /* 126 */
281 #ifndef OPENSSL_NO_RFC3779
282 NID_sbgp_ipAddrBlock, /* 290 */
283 NID_sbgp_autonomousSysNum, /* 291 */
285 NID_policy_constraints, /* 401 */
286 NID_proxyCertInfo, /* 663 */
287 NID_name_constraints, /* 666 */
288 NID_policy_mappings, /* 747 */
289 NID_inhibit_any_policy /* 748 */
292 int ex_nid = OBJ_obj2nid(X509_EXTENSION_get_object(ex));
294 if (ex_nid == NID_undef)
297 if (OBJ_bsearch_nid(&ex_nid, supported_nids, OSSL_NELEM(supported_nids)))
302 static void setup_dp(X509 *x, DIST_POINT *dp)
304 X509_NAME *iname = NULL;
307 if (dp->reasons->length > 0)
308 dp->dp_reasons = dp->reasons->data[0];
309 if (dp->reasons->length > 1)
310 dp->dp_reasons |= (dp->reasons->data[1] << 8);
311 dp->dp_reasons &= CRLDP_ALL_REASONS;
313 dp->dp_reasons = CRLDP_ALL_REASONS;
314 if (!dp->distpoint || (dp->distpoint->type != 1))
316 for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
317 GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
318 if (gen->type == GEN_DIRNAME) {
319 iname = gen->d.directoryName;
324 iname = X509_get_issuer_name(x);
326 DIST_POINT_set_dpname(dp->distpoint, iname);
330 static void setup_crldp(X509 *x)
333 x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
334 for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++)
335 setup_dp(x, sk_DIST_POINT_value(x->crldp, i));
338 #define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
339 #define ku_reject(x, usage) \
340 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
341 #define xku_reject(x, usage) \
342 (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage)))
343 #define ns_reject(x, usage) \
344 (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
346 static void x509v3_cache_extensions(X509 *x)
348 BASIC_CONSTRAINTS *bs;
349 PROXY_CERT_INFO_EXTENSION *pci;
350 ASN1_BIT_STRING *usage;
352 EXTENDED_KEY_USAGE *extusage;
356 CRYPTO_THREAD_write_lock(x->lock);
357 if (x->ex_flags & EXFLAG_SET) {
358 CRYPTO_THREAD_unlock(x->lock);
362 X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
363 /* V1 should mean no extensions ... */
364 if (!X509_get_version(x))
365 x->ex_flags |= EXFLAG_V1;
366 /* Handle basic constraints */
367 if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
369 x->ex_flags |= EXFLAG_CA;
371 if ((bs->pathlen->type == V_ASN1_NEG_INTEGER)
373 x->ex_flags |= EXFLAG_INVALID;
376 x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen);
379 BASIC_CONSTRAINTS_free(bs);
380 x->ex_flags |= EXFLAG_BCONS;
382 /* Handle proxy certificates */
383 if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
384 if (x->ex_flags & EXFLAG_CA
385 || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0
386 || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) {
387 x->ex_flags |= EXFLAG_INVALID;
389 if (pci->pcPathLengthConstraint) {
390 x->ex_pcpathlen = ASN1_INTEGER_get(pci->pcPathLengthConstraint);
392 x->ex_pcpathlen = -1;
393 PROXY_CERT_INFO_EXTENSION_free(pci);
394 x->ex_flags |= EXFLAG_PROXY;
396 /* Handle key usage */
397 if ((usage = X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
398 if (usage->length > 0) {
399 x->ex_kusage = usage->data[0];
400 if (usage->length > 1)
401 x->ex_kusage |= usage->data[1] << 8;
404 x->ex_flags |= EXFLAG_KUSAGE;
405 ASN1_BIT_STRING_free(usage);
408 if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
409 x->ex_flags |= EXFLAG_XKUSAGE;
410 for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
411 switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) {
412 case NID_server_auth:
413 x->ex_xkusage |= XKU_SSL_SERVER;
416 case NID_client_auth:
417 x->ex_xkusage |= XKU_SSL_CLIENT;
420 case NID_email_protect:
421 x->ex_xkusage |= XKU_SMIME;
425 x->ex_xkusage |= XKU_CODE_SIGN;
430 x->ex_xkusage |= XKU_SGC;
434 x->ex_xkusage |= XKU_OCSP_SIGN;
438 x->ex_xkusage |= XKU_TIMESTAMP;
442 x->ex_xkusage |= XKU_DVCS;
445 case NID_anyExtendedKeyUsage:
446 x->ex_xkusage |= XKU_ANYEKU;
450 sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
453 if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
455 x->ex_nscert = ns->data[0];
458 x->ex_flags |= EXFLAG_NSCERT;
459 ASN1_BIT_STRING_free(ns);
461 x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, NULL, NULL);
462 x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, NULL, NULL);
463 /* Does subject name match issuer ? */
464 if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) {
465 x->ex_flags |= EXFLAG_SI;
466 /* If SKID matches AKID also indicate self signed */
467 if (X509_check_akid(x, x->akid) == X509_V_OK &&
468 !ku_reject(x, KU_KEY_CERT_SIGN))
469 x->ex_flags |= EXFLAG_SS;
471 x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
472 x->nc = X509_get_ext_d2i(x, NID_name_constraints, &i, NULL);
473 if (!x->nc && (i != -1))
474 x->ex_flags |= EXFLAG_INVALID;
477 #ifndef OPENSSL_NO_RFC3779
478 x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, NULL, NULL);
479 x->rfc3779_asid = X509_get_ext_d2i(x, NID_sbgp_autonomousSysNum,
482 for (i = 0; i < X509_get_ext_count(x); i++) {
483 ex = X509_get_ext(x, i);
484 if (OBJ_obj2nid(X509_EXTENSION_get_object(ex))
486 x->ex_flags |= EXFLAG_FRESHEST;
487 if (!X509_EXTENSION_get_critical(ex))
489 if (!X509_supported_extension(ex)) {
490 x->ex_flags |= EXFLAG_CRITICAL;
494 x509_init_sig_info(x);
495 x->ex_flags |= EXFLAG_SET;
496 CRYPTO_THREAD_unlock(x->lock);
500 * CA checks common to all purposes
504 * 2 basicConstraints absent so "maybe" a CA
505 * 3 basicConstraints absent but self signed V1.
506 * 4 basicConstraints absent but keyUsage present and keyCertSign asserted.
509 static int check_ca(const X509 *x)
511 /* keyUsage if present should allow cert signing */
512 if (ku_reject(x, KU_KEY_CERT_SIGN))
514 if (x->ex_flags & EXFLAG_BCONS) {
515 if (x->ex_flags & EXFLAG_CA)
517 /* If basicConstraints says not a CA then say so */
521 /* we support V1 roots for... uh, I don't really know why. */
522 if ((x->ex_flags & V1_ROOT) == V1_ROOT)
525 * If key usage present it must have certSign so tolerate it
527 else if (x->ex_flags & EXFLAG_KUSAGE)
529 /* Older certificates could have Netscape-specific CA types */
530 else if (x->ex_flags & EXFLAG_NSCERT && x->ex_nscert & NS_ANY_CA)
532 /* can this still be regarded a CA certificate? I doubt it */
537 void X509_set_proxy_flag(X509 *x)
539 x->ex_flags |= EXFLAG_PROXY;
542 void X509_set_proxy_pathlen(X509 *x, long l)
547 int X509_check_ca(X509 *x)
549 x509v3_cache_extensions(x);
554 /* Check SSL CA: common checks for SSL client and server */
555 static int check_ssl_ca(const X509 *x)
558 ca_ret = check_ca(x);
561 /* check nsCertType if present */
562 if (ca_ret != 5 || x->ex_nscert & NS_SSL_CA)
568 static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
571 if (xku_reject(x, XKU_SSL_CLIENT))
574 return check_ssl_ca(x);
575 /* We need to do digital signatures or key agreement */
576 if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT))
578 /* nsCertType if present should allow SSL client use */
579 if (ns_reject(x, NS_SSL_CLIENT))
585 * Key usage needed for TLS/SSL server: digital signature, encipherment or
586 * key agreement. The ssl code can check this more thoroughly for individual
590 KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT|KU_KEY_AGREEMENT
592 static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
595 if (xku_reject(x, XKU_SSL_SERVER | XKU_SGC))
598 return check_ssl_ca(x);
600 if (ns_reject(x, NS_SSL_SERVER))
602 if (ku_reject(x, KU_TLS))
609 static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
613 ret = check_purpose_ssl_server(xp, x, ca);
616 /* We need to encipher or Netscape complains */
617 if (ku_reject(x, KU_KEY_ENCIPHERMENT))
622 /* common S/MIME checks */
623 static int purpose_smime(const X509 *x, int ca)
625 if (xku_reject(x, XKU_SMIME))
629 ca_ret = check_ca(x);
632 /* check nsCertType if present */
633 if (ca_ret != 5 || x->ex_nscert & NS_SMIME_CA)
638 if (x->ex_flags & EXFLAG_NSCERT) {
639 if (x->ex_nscert & NS_SMIME)
641 /* Workaround for some buggy certificates */
642 if (x->ex_nscert & NS_SSL_CLIENT)
649 static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
653 ret = purpose_smime(x, ca);
656 if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION))
661 static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
665 ret = purpose_smime(x, ca);
668 if (ku_reject(x, KU_KEY_ENCIPHERMENT))
673 static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
678 if ((ca_ret = check_ca(x)) != 2)
683 if (ku_reject(x, KU_CRL_SIGN))
689 * OCSP helper: this is *not* a full OCSP check. It just checks that each CA
690 * is valid. Additional checks must be made on the chain.
693 static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca)
696 * Must be a valid CA. Should we really support the "I don't know" value
701 /* leaf certificate is checked in OCSP_verify() */
705 static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
710 /* If ca is true we must return if this is a valid CA certificate. */
715 * Check the optional key usage field:
716 * if Key Usage is present, it must be one of digitalSignature
717 * and/or nonRepudiation (other values are not consistent and shall
720 if ((x->ex_flags & EXFLAG_KUSAGE)
721 && ((x->ex_kusage & ~(KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)) ||
722 !(x->ex_kusage & (KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE))))
725 /* Only time stamp key usage is permitted and it's required. */
726 if (!(x->ex_flags & EXFLAG_XKUSAGE) || x->ex_xkusage != XKU_TIMESTAMP)
729 /* Extended Key Usage MUST be critical */
730 i_ext = X509_get_ext_by_NID(x, NID_ext_key_usage, -1);
732 X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext);
733 if (!X509_EXTENSION_get_critical(ext))
740 static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca)
746 * Various checks to see if one certificate issued the second.
747 * This can be used to prune a set of possible issuer certificates
748 * which have been looked up using some simple method such as by
751 * 1. Check issuer_name(subject) == subject_name(issuer)
752 * 2. If akid(subject) exists check it matches issuer
753 * 3. If key_usage(issuer) exists check it supports certificate signing
754 * returns 0 for OK, positive for reason for mismatch, reasons match
755 * codes for X509_verify_cert()
758 int X509_check_issued(X509 *issuer, X509 *subject)
760 if (X509_NAME_cmp(X509_get_subject_name(issuer),
761 X509_get_issuer_name(subject)))
762 return X509_V_ERR_SUBJECT_ISSUER_MISMATCH;
764 x509v3_cache_extensions(issuer);
765 x509v3_cache_extensions(subject);
768 int ret = X509_check_akid(issuer, subject->akid);
769 if (ret != X509_V_OK)
773 if (subject->ex_flags & EXFLAG_PROXY) {
774 if (ku_reject(issuer, KU_DIGITAL_SIGNATURE))
775 return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE;
776 } else if (ku_reject(issuer, KU_KEY_CERT_SIGN))
777 return X509_V_ERR_KEYUSAGE_NO_CERTSIGN;
781 int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
787 /* Check key ids (if present) */
788 if (akid->keyid && issuer->skid &&
789 ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
790 return X509_V_ERR_AKID_SKID_MISMATCH;
791 /* Check serial number */
793 ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
794 return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
795 /* Check issuer name */
798 * Ugh, for some peculiar reason AKID includes SEQUENCE OF
799 * GeneralName. So look for a DirName. There may be more than one but
800 * we only take any notice of the first.
804 X509_NAME *nm = NULL;
807 for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
808 gen = sk_GENERAL_NAME_value(gens, i);
809 if (gen->type == GEN_DIRNAME) {
814 if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer)))
815 return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
820 uint32_t X509_get_extension_flags(X509 *x)
822 /* Call for side-effect of computing hash and caching extensions */
823 X509_check_purpose(x, -1, -1);
827 uint32_t X509_get_key_usage(X509 *x)
829 /* Call for side-effect of computing hash and caching extensions */
830 X509_check_purpose(x, -1, -1);
831 if (x->ex_flags & EXFLAG_KUSAGE)
836 uint32_t X509_get_extended_key_usage(X509 *x)
838 /* Call for side-effect of computing hash and caching extensions */
839 X509_check_purpose(x, -1, -1);
840 if (x->ex_flags & EXFLAG_XKUSAGE)
841 return x->ex_xkusage;
845 const ASN1_OCTET_STRING *X509_get0_subject_key_id(X509 *x)
847 /* Call for side-effect of computing hash and caching extensions */
848 X509_check_purpose(x, -1, -1);
852 const ASN1_OCTET_STRING *X509_get0_authority_key_id(X509 *x)
854 /* Call for side-effect of computing hash and caching extensions */
855 X509_check_purpose(x, -1, -1);
856 return (x->akid != NULL ? x->akid->keyid : NULL);
859 long X509_get_pathlen(X509 *x)
861 /* Called for side effect of caching extensions */
862 if (X509_check_purpose(x, -1, -1) != 1
863 || (x->ex_flags & EXFLAG_BCONS) == 0)
865 return x->ex_pathlen;
868 long X509_get_proxy_pathlen(X509 *x)
870 /* Called for side effect of caching extensions */
871 if (X509_check_purpose(x, -1, -1) != 1
872 || (x->ex_flags & EXFLAG_PROXY) == 0)
874 return x->ex_pcpathlen;