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>
73 static int null_callback(int ok,X509_STORE_CTX *e);
74 static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
75 static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
76 static int check_chain_purpose(X509_STORE_CTX *ctx);
77 static int check_trust(X509_STORE_CTX *ctx);
78 static int check_revocation(X509_STORE_CTX *ctx);
79 static int check_cert(X509_STORE_CTX *ctx);
80 static int internal_verify(X509_STORE_CTX *ctx);
81 const char *X509_version="X.509" OPENSSL_VERSION_PTEXT;
83 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *x509_store_ctx_method=NULL;
84 static int x509_store_ctx_num=0;
87 static int null_callback(int ok, X509_STORE_CTX *e)
93 static int x509_subject_cmp(X509 **a, X509 **b)
95 return X509_subject_name_cmp(*a,*b);
99 int X509_verify_cert(X509_STORE_CTX *ctx)
101 X509 *x,*xtmp,*chain_ss=NULL;
106 STACK_OF(X509) *sktmp=NULL;
108 if (ctx->cert == NULL)
110 X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
115 if (cb == NULL) cb=null_callback;
117 /* first we make sure the chain we are going to build is
118 * present and that the first entry is in place */
119 if (ctx->chain == NULL)
121 if ( ((ctx->chain=sk_X509_new_null()) == NULL) ||
122 (!sk_X509_push(ctx->chain,ctx->cert)))
124 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
127 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
128 ctx->last_untrusted=1;
131 /* We use a temporary STACK so we can chop and hack at it */
132 if (ctx->untrusted != NULL
133 && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
135 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
139 num=sk_X509_num(ctx->chain);
140 x=sk_X509_value(ctx->chain,num-1);
146 /* If we have enough, we break */
147 if (depth < num) break; /* FIXME: If this happens, we should take
148 * note of it and, if appropriate, use the
149 * X509_V_ERR_CERT_CHAIN_TOO_LONG error
153 /* If we are self signed, we break */
154 xn=X509_get_issuer_name(x);
155 if (ctx->check_issued(ctx, x,x)) break;
157 /* If we were passed a cert chain, use it first */
158 if (ctx->untrusted != NULL)
160 xtmp=find_issuer(ctx, sktmp,x);
163 if (!sk_X509_push(ctx->chain,xtmp))
165 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
168 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
169 sk_X509_delete_ptr(sktmp,xtmp);
170 ctx->last_untrusted++;
173 /* reparse the full chain for
181 /* at this point, chain should contain a list of untrusted
182 * certificates. We now need to add at least one trusted one,
183 * if possible, otherwise we complain. */
185 /* Examine last certificate in chain and see if it
189 i=sk_X509_num(ctx->chain);
190 x=sk_X509_value(ctx->chain,i-1);
191 xn = X509_get_subject_name(x);
192 if (ctx->check_issued(ctx, x, x))
194 /* we have a self signed certificate */
195 if (sk_X509_num(ctx->chain) == 1)
197 /* We have a single self signed certificate: see if
198 * we can find it in the store. We must have an exact
199 * match to avoid possible impersonation.
201 ok = ctx->get_issuer(&xtmp, ctx, x);
202 if ((ok <= 0) || X509_cmp(x, xtmp))
204 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
206 ctx->error_depth=i-1;
207 if (ok == 1) X509_free(xtmp);
213 /* We have a match: replace certificate with store version
214 * so we get any trust settings.
218 sk_X509_set(ctx->chain, i - 1, x);
219 ctx->last_untrusted=0;
224 /* extract and save self signed certificate for later use */
225 chain_ss=sk_X509_pop(ctx->chain);
226 ctx->last_untrusted--;
228 x=sk_X509_value(ctx->chain,num-1);
232 /* We now lookup certs from the certificate store */
235 /* If we have enough, we break */
236 if (depth < num) break;
238 /* If we are self signed, we break */
239 xn=X509_get_issuer_name(x);
240 if (ctx->check_issued(ctx,x,x)) break;
242 ok = ctx->get_issuer(&xtmp, ctx, x);
244 if (ok < 0) return ok;
248 if (!sk_X509_push(ctx->chain,x))
251 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
257 /* we now have our chain, lets check it... */
258 xn=X509_get_issuer_name(x);
260 /* Is last certificate looked up self signed? */
261 if (!ctx->check_issued(ctx,x,x))
263 if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss))
265 if (ctx->last_untrusted >= num)
266 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
268 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
274 sk_X509_push(ctx->chain,chain_ss);
276 ctx->last_untrusted=num;
277 ctx->current_cert=chain_ss;
278 ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
282 ctx->error_depth=num-1;
287 /* We have the chain complete: now we need to check its purpose */
288 if (ctx->purpose > 0) ok = check_chain_purpose(ctx);
292 /* The chain extensions are OK: check trust */
294 if (ctx->trust > 0) ok = check_trust(ctx);
298 /* We may as well copy down any DSA parameters that are required */
299 X509_get_pubkey_parameters(NULL,ctx->chain);
301 /* Check revocation status: we do this after copying parameters
302 * because they may be needed for CRL signature verification.
305 ok = ctx->check_revocation(ctx);
308 /* At this point, we have a chain and just need to verify it */
309 if (ctx->verify != NULL)
312 ok=internal_verify(ctx);
316 X509_get_pubkey_parameters(NULL,ctx->chain);
318 if (sktmp != NULL) sk_X509_free(sktmp);
319 if (chain_ss != NULL) X509_free(chain_ss);
324 /* Given a STACK_OF(X509) find the issuer of cert (if any)
327 static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
331 for (i = 0; i < sk_X509_num(sk); i++)
333 issuer = sk_X509_value(sk, i);
334 if (ctx->check_issued(ctx, x, issuer))
340 /* Given a possible certificate and issuer check them */
342 static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
345 ret = X509_check_issued(issuer, x);
346 if (ret == X509_V_OK)
348 /* If we haven't asked for issuer errors don't set ctx */
349 if (!(ctx->flags & X509_V_FLAG_CB_ISSUER_CHECK))
353 ctx->current_cert = x;
354 ctx->current_issuer = issuer;
356 return ctx->verify_cb(0, ctx);
360 /* Alternative lookup method: look from a STACK stored in other_ctx */
362 static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
364 *issuer = find_issuer(ctx, ctx->other_ctx, x);
367 CRYPTO_add(&(*issuer)->references,1,CRYPTO_LOCK_X509);
375 /* Check a certificate chains extensions for consistency
376 * with the supplied purpose
379 static int check_chain_purpose(X509_STORE_CTX *ctx)
381 #ifdef OPENSSL_NO_CHAIN_VERIFY
388 if (cb == NULL) cb=null_callback;
389 /* Check all untrusted certificates */
390 for (i = 0; i < ctx->last_untrusted; i++)
392 x = sk_X509_value(ctx->chain, i);
393 if (!X509_check_purpose(x, ctx->purpose, i))
396 ctx->error = X509_V_ERR_INVALID_CA;
398 ctx->error = X509_V_ERR_INVALID_PURPOSE;
399 ctx->error_depth = i;
400 ctx->current_cert = x;
405 if ((i > 1) && (x->ex_pathlen != -1)
406 && (i > (x->ex_pathlen + 1)))
408 ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
409 ctx->error_depth = i;
410 ctx->current_cert = x;
421 static int check_trust(X509_STORE_CTX *ctx)
423 #ifdef OPENSSL_NO_CHAIN_VERIFY
430 if (cb == NULL) cb=null_callback;
431 /* For now just check the last certificate in the chain */
432 i = sk_X509_num(ctx->chain) - 1;
433 x = sk_X509_value(ctx->chain, i);
434 ok = X509_check_trust(x, ctx->trust, 0);
435 if (ok == X509_TRUST_TRUSTED)
437 ctx->error_depth = i;
438 ctx->current_cert = x;
439 if (ok == X509_TRUST_REJECTED)
440 ctx->error = X509_V_ERR_CERT_REJECTED;
442 ctx->error = X509_V_ERR_CERT_UNTRUSTED;
448 static int check_revocation(X509_STORE_CTX *ctx)
451 if (!(ctx->flags & X509_V_FLAG_CRL_CHECK))
453 if (ctx->flags & X509_V_FLAG_CRL_CHECK_ALL)
456 last = sk_X509_num(ctx->chain) - 1;
457 for(i = 0; i <= last; i++)
459 ctx->error_depth = i;
460 ok = check_cert(ctx);
466 static int check_cert(X509_STORE_CTX *ctx)
468 X509_CRL *crl = NULL;
471 cnum = ctx->error_depth;
472 x = sk_X509_value(ctx->chain, cnum);
473 ctx->current_cert = x;
474 /* Try to retrieve relevant CRL */
475 ok = ctx->get_crl(ctx, &crl, x);
476 /* If error looking up CRL, nothing we can do except
481 ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
483 ok = ctx->verify_cb(0, ctx);
486 ctx->current_crl = crl;
487 ok = ctx->check_crl(ctx, crl);
489 ok = ctx->cert_crl(ctx, crl, x);
491 ctx->current_crl = NULL;
497 /* Retrieve CRL corresponding to certificate: currently just a
498 * subject lookup: maybe use AKID later...
499 * Also might look up any included CRLs too (e.g PKCS#7 signedData).
501 static int get_crl(X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x)
505 ok = X509_STORE_get_by_subject(ctx, X509_LU_CRL, X509_get_issuer_name(x), &xobj);
507 *crl = xobj.data.crl;
511 /* Check CRL validity */
512 static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
515 EVP_PKEY *ikey = NULL;
516 int ok = 0, chnum, cnum, i;
518 cnum = ctx->error_depth;
519 chnum = sk_X509_num(ctx->chain) - 1;
520 /* Find CRL issuer: if not last certificate then issuer
521 * is next certificate in chain.
524 issuer = sk_X509_value(ctx->chain, cnum + 1);
527 issuer = sk_X509_value(ctx->chain, chnum);
528 /* If not self signed, can't check signature */
529 if(!ctx->check_issued(ctx, issuer, issuer))
531 ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER;
533 ok = ctx->verify_cb(0, ctx);
541 /* Attempt to get issuer certificate public key */
542 ikey = X509_get_pubkey(issuer);
546 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
548 ok = ctx->verify_cb(0, ctx);
553 /* Verify CRL signature */
554 if(X509_CRL_verify(crl, ikey) <= 0)
556 ctx->error=X509_V_ERR_CRL_SIGNATURE_FAILURE;
558 ok = ctx->verify_cb(0, ctx);
564 /* OK, CRL signature valid check times */
565 if (ctx->flags & X509_V_FLAG_USE_CHECK_TIME)
566 ptime = &ctx->check_time;
570 i=X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
573 ctx->error=X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
576 ok = ctx->verify_cb(0, ctx);
582 ctx->error=X509_V_ERR_CRL_NOT_YET_VALID;
585 ok = ctx->verify_cb(0, ctx);
589 if(X509_CRL_get_nextUpdate(crl))
591 i=X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
595 ctx->error=X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
598 ok = ctx->verify_cb(0, ctx);
604 ctx->error=X509_V_ERR_CRL_HAS_EXPIRED;
607 ok = ctx->verify_cb(0, ctx);
619 /* Check certificate against CRL */
620 static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
624 /* Look for serial number of certificate in CRL */
625 rtmp.serialNumber = X509_get_serialNumber(x);
626 idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
628 if(idx == -1) return 1;
629 /* Otherwise revoked: want something cleverer than
630 * this to handle entry extensions in V2 CRLs.
632 ctx->error = X509_V_ERR_CERT_REVOKED;
634 ok = ctx->verify_cb(0, ctx);
638 static int internal_verify(X509_STORE_CTX *ctx)
647 if (cb == NULL) cb=null_callback;
649 n=sk_X509_num(ctx->chain);
650 ctx->error_depth=n-1;
652 xi=sk_X509_value(ctx->chain,n);
653 if (ctx->flags & X509_V_FLAG_USE_CHECK_TIME)
654 ptime = &ctx->check_time;
657 if (ctx->check_issued(ctx, xi, xi))
663 ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
664 ctx->current_cert=xi;
672 xs=sk_X509_value(ctx->chain,n);
676 /* ctx->error=0; not needed */
682 if ((pkey=X509_get_pubkey(xi)) == NULL)
684 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
685 ctx->current_cert=xi;
689 if (X509_verify(xs,pkey) <= 0)
690 /* XXX For the final trusted self-signed cert,
691 * this is a waste of time. That check should
692 * optional so that e.g. 'openssl x509' can be
693 * used to detect invalid self-signatures, but
694 * we don't verify again and again in SSL
695 * handshakes and the like once the cert has
696 * been declared trusted. */
698 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
699 ctx->current_cert=xs;
710 i=X509_cmp_time(X509_get_notBefore(xs), ptime);
713 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
714 ctx->current_cert=xs;
720 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
721 ctx->current_cert=xs;
728 i=X509_cmp_time(X509_get_notAfter(xs), ptime);
731 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
732 ctx->current_cert=xs;
739 ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
740 ctx->current_cert=xs;
747 /* The last error (if any) is still in the error value */
748 ctx->current_cert=xs;
756 xs=sk_X509_value(ctx->chain,n);
764 int X509_cmp_current_time(ASN1_TIME *ctm)
766 return X509_cmp_time(ctm, NULL);
769 int X509_cmp_time(ASN1_TIME *ctm, time_t *cmp_time)
774 char buff1[24],buff2[24],*p;
779 str=(char *)ctm->data;
780 if (ctm->type == V_ASN1_UTCTIME)
782 if ((i < 11) || (i > 17)) return 0;
789 if (i < 13) return 0;
795 if ((*str == 'Z') || (*str == '-') || (*str == '+'))
796 { *(p++)='0'; *(p++)='0'; }
801 /* Skip any fractional seconds... */
805 while ((*str >= '0') && (*str <= '9')) str++;
816 if ((*str != '+') && (str[5] != '-'))
818 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
819 offset+=(str[3]-'0')*10+(str[4]-'0');
824 atm.length=sizeof(buff2);
825 atm.data=(unsigned char *)buff2;
827 X509_time_adj(&atm,-offset*60, cmp_time);
829 if (ctm->type == V_ASN1_UTCTIME)
831 i=(buff1[0]-'0')*10+(buff1[1]-'0');
832 if (i < 50) i+=100; /* cf. RFC 2459 */
833 j=(buff2[0]-'0')*10+(buff2[1]-'0');
836 if (i < j) return -1;
839 i=strcmp(buff1,buff2);
840 if (i == 0) /* wait a second then return younger :-) */
846 ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
848 return X509_time_adj(s, adj, NULL);
851 ASN1_TIME *X509_time_adj(ASN1_TIME *s, long adj, time_t *in_tm)
856 if (in_tm) t = *in_tm;
860 if (s) type = s->type;
861 if (type == V_ASN1_UTCTIME) return ASN1_UTCTIME_set(s,t);
862 if (type == V_ASN1_GENERALIZEDTIME) return ASN1_GENERALIZEDTIME_set(s, t);
863 return ASN1_TIME_set(s, t);
866 int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
868 EVP_PKEY *ktmp=NULL,*ktmp2;
871 if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return 1;
873 for (i=0; i<sk_X509_num(chain); i++)
875 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
878 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
881 if (!EVP_PKEY_missing_parameters(ktmp))
891 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
895 /* first, populate the other certs */
896 for (j=i-1; j >= 0; j--)
898 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
899 EVP_PKEY_copy_parameters(ktmp2,ktmp);
900 EVP_PKEY_free(ktmp2);
903 if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
908 int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
909 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
911 /* This function is (usually) called only once, by
912 * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c).
913 * That function uses locking, so we don't (usually)
914 * have to worry about locking here. For the whole cruel
915 * truth, see crypto/ex_data.c */
916 x509_store_ctx_num++;
917 return CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
918 &x509_store_ctx_method,
919 argl,argp,new_func,dup_func,free_func);
922 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
924 return CRYPTO_set_ex_data(&ctx->ex_data,idx,data);
927 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
929 return CRYPTO_get_ex_data(&ctx->ex_data,idx);
932 int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
937 void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
942 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
944 return ctx->error_depth;
947 X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
949 return ctx->current_cert;
952 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
957 STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
961 STACK_OF(X509) *chain;
962 if (!ctx->chain || !(chain = sk_X509_dup(ctx->chain))) return NULL;
963 for (i = 0; i < sk_X509_num(chain); i++)
965 x = sk_X509_value(chain, i);
966 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
971 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
976 void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
981 int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
983 return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
986 int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
988 return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
991 /* This function is used to set the X509_STORE_CTX purpose and trust
992 * values. This is intended to be used when another structure has its
993 * own trust and purpose values which (if set) will be inherited by
994 * the ctx. If they aren't set then we will usually have a default
995 * purpose in mind which should then be used to set the trust value.
996 * An example of this is SSL use: an SSL structure will have its own
997 * purpose and trust settings which the application can set: if they
998 * aren't set then we use the default of SSL client/server.
1001 int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
1002 int purpose, int trust)
1005 /* If purpose not set use default */
1006 if (!purpose) purpose = def_purpose;
1007 /* If we have a purpose then check it is valid */
1011 idx = X509_PURPOSE_get_by_id(purpose);
1014 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
1015 X509_R_UNKNOWN_PURPOSE_ID);
1018 ptmp = X509_PURPOSE_get0(idx);
1019 if (ptmp->trust == X509_TRUST_DEFAULT)
1021 idx = X509_PURPOSE_get_by_id(def_purpose);
1024 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
1025 X509_R_UNKNOWN_PURPOSE_ID);
1028 ptmp = X509_PURPOSE_get0(idx);
1030 /* If trust not set then get from purpose default */
1031 if (!trust) trust = ptmp->trust;
1035 idx = X509_TRUST_get_by_id(trust);
1038 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
1039 X509_R_UNKNOWN_TRUST_ID);
1044 if (purpose) ctx->purpose = purpose;
1045 if (trust) ctx->trust = trust;
1049 X509_STORE_CTX *X509_STORE_CTX_new(void)
1051 X509_STORE_CTX *ctx;
1052 ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
1053 if (ctx) memset(ctx, 0, sizeof(X509_STORE_CTX));
1057 void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
1059 X509_STORE_CTX_cleanup(ctx);
1063 void X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
1064 STACK_OF(X509) *chain)
1067 ctx->current_method=0;
1069 ctx->untrusted=chain;
1070 ctx->last_untrusted=0;
1075 ctx->other_ctx=NULL;
1081 ctx->current_cert=NULL;
1082 ctx->current_issuer=NULL;
1083 ctx->check_issued = check_issued;
1084 ctx->get_issuer = X509_STORE_CTX_get1_issuer;
1085 ctx->verify_cb = store->verify_cb;
1086 ctx->verify = store->verify;
1087 ctx->check_revocation = check_revocation;
1088 ctx->get_crl = get_crl;
1089 ctx->check_crl = check_crl;
1090 ctx->cert_crl = cert_crl;
1092 memset(&(ctx->ex_data),0,sizeof(CRYPTO_EX_DATA));
1095 /* Set alternative lookup method: just a STACK of trusted certificates.
1096 * This avoids X509_STORE nastiness where it isn't needed.
1099 void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
1101 ctx->other_ctx = sk;
1102 ctx->get_issuer = get_issuer_sk;
1105 void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
1107 if (ctx->cleanup) ctx->cleanup(ctx);
1108 if (ctx->chain != NULL)
1110 sk_X509_pop_free(ctx->chain,X509_free);
1113 CRYPTO_free_ex_data(x509_store_ctx_method,ctx,&(ctx->ex_data));
1114 memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
1117 void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, long flags)
1119 ctx->flags |= flags;
1122 void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, long flags, time_t t)
1124 ctx->check_time = t;
1125 ctx->flags |= X509_V_FLAG_USE_CHECK_TIME;
1128 IMPLEMENT_STACK_OF(X509)
1129 IMPLEMENT_ASN1_SET_OF(X509)
1131 IMPLEMENT_STACK_OF(X509_NAME)
1133 IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
1134 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)