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);
116 /* first we make sure the chain we are going to build is
117 * present and that the first entry is in place */
118 if (ctx->chain == NULL)
120 if ( ((ctx->chain=sk_X509_new_null()) == NULL) ||
121 (!sk_X509_push(ctx->chain,ctx->cert)))
123 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
126 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
127 ctx->last_untrusted=1;
130 /* We use a temporary STACK so we can chop and hack at it */
131 if (ctx->untrusted != NULL
132 && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
134 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
138 num=sk_X509_num(ctx->chain);
139 x=sk_X509_value(ctx->chain,num-1);
145 /* If we have enough, we break */
146 if (depth < num) break; /* FIXME: If this happens, we should take
147 * note of it and, if appropriate, use the
148 * X509_V_ERR_CERT_CHAIN_TOO_LONG error
152 /* If we are self signed, we break */
153 xn=X509_get_issuer_name(x);
154 if (ctx->check_issued(ctx, x,x)) break;
156 /* If we were passed a cert chain, use it first */
157 if (ctx->untrusted != NULL)
159 xtmp=find_issuer(ctx, sktmp,x);
162 if (!sk_X509_push(ctx->chain,xtmp))
164 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
167 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
168 sk_X509_delete_ptr(sktmp,xtmp);
169 ctx->last_untrusted++;
172 /* reparse the full chain for
180 /* at this point, chain should contain a list of untrusted
181 * certificates. We now need to add at least one trusted one,
182 * if possible, otherwise we complain. */
184 /* Examine last certificate in chain and see if it
188 i=sk_X509_num(ctx->chain);
189 x=sk_X509_value(ctx->chain,i-1);
190 xn = X509_get_subject_name(x);
191 if (ctx->check_issued(ctx, x, x))
193 /* we have a self signed certificate */
194 if (sk_X509_num(ctx->chain) == 1)
196 /* We have a single self signed certificate: see if
197 * we can find it in the store. We must have an exact
198 * match to avoid possible impersonation.
200 ok = ctx->get_issuer(&xtmp, ctx, x);
201 if ((ok <= 0) || X509_cmp(x, xtmp))
203 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
205 ctx->error_depth=i-1;
206 if (ok == 1) X509_free(xtmp);
212 /* We have a match: replace certificate with store version
213 * so we get any trust settings.
217 sk_X509_set(ctx->chain, i - 1, x);
218 ctx->last_untrusted=0;
223 /* extract and save self signed certificate for later use */
224 chain_ss=sk_X509_pop(ctx->chain);
225 ctx->last_untrusted--;
227 x=sk_X509_value(ctx->chain,num-1);
231 /* We now lookup certs from the certificate store */
234 /* If we have enough, we break */
235 if (depth < num) break;
237 /* If we are self signed, we break */
238 xn=X509_get_issuer_name(x);
239 if (ctx->check_issued(ctx,x,x)) break;
241 ok = ctx->get_issuer(&xtmp, ctx, x);
243 if (ok < 0) return ok;
247 if (!sk_X509_push(ctx->chain,x))
250 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
256 /* we now have our chain, lets check it... */
257 xn=X509_get_issuer_name(x);
259 /* Is last certificate looked up self signed? */
260 if (!ctx->check_issued(ctx,x,x))
262 if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss))
264 if (ctx->last_untrusted >= num)
265 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
267 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
273 sk_X509_push(ctx->chain,chain_ss);
275 ctx->last_untrusted=num;
276 ctx->current_cert=chain_ss;
277 ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
281 ctx->error_depth=num-1;
286 /* We have the chain complete: now we need to check its purpose */
287 if (ctx->purpose > 0) ok = check_chain_purpose(ctx);
291 /* The chain extensions are OK: check trust */
293 if (ctx->trust > 0) ok = check_trust(ctx);
297 /* We may as well copy down any DSA parameters that are required */
298 X509_get_pubkey_parameters(NULL,ctx->chain);
300 /* Check revocation status: we do this after copying parameters
301 * because they may be needed for CRL signature verification.
304 ok = ctx->check_revocation(ctx);
307 /* At this point, we have a chain and just need to verify it */
308 if (ctx->verify != NULL)
311 ok=internal_verify(ctx);
315 X509_get_pubkey_parameters(NULL,ctx->chain);
317 if (sktmp != NULL) sk_X509_free(sktmp);
318 if (chain_ss != NULL) X509_free(chain_ss);
323 /* Given a STACK_OF(X509) find the issuer of cert (if any)
326 static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
330 for (i = 0; i < sk_X509_num(sk); i++)
332 issuer = sk_X509_value(sk, i);
333 if (ctx->check_issued(ctx, x, issuer))
339 /* Given a possible certificate and issuer check them */
341 static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
344 ret = X509_check_issued(issuer, x);
345 if (ret == X509_V_OK)
347 /* If we haven't asked for issuer errors don't set ctx */
348 if (!(ctx->flags & X509_V_FLAG_CB_ISSUER_CHECK))
352 ctx->current_cert = x;
353 ctx->current_issuer = issuer;
354 return ctx->verify_cb(0, ctx);
358 /* Alternative lookup method: look from a STACK stored in other_ctx */
360 static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
362 *issuer = find_issuer(ctx, ctx->other_ctx, x);
365 CRYPTO_add(&(*issuer)->references,1,CRYPTO_LOCK_X509);
373 /* Check a certificate chains extensions for consistency
374 * with the supplied purpose
377 static int check_chain_purpose(X509_STORE_CTX *ctx)
379 #ifdef OPENSSL_NO_CHAIN_VERIFY
386 /* Check all untrusted certificates */
387 for (i = 0; i < ctx->last_untrusted; i++)
389 x = sk_X509_value(ctx->chain, i);
390 if (!X509_check_purpose(x, ctx->purpose, i))
393 ctx->error = X509_V_ERR_INVALID_CA;
395 ctx->error = X509_V_ERR_INVALID_PURPOSE;
396 ctx->error_depth = i;
397 ctx->current_cert = x;
402 if ((i > 1) && (x->ex_pathlen != -1)
403 && (i > (x->ex_pathlen + 1)))
405 ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
406 ctx->error_depth = i;
407 ctx->current_cert = x;
418 static int check_trust(X509_STORE_CTX *ctx)
420 #ifdef OPENSSL_NO_CHAIN_VERIFY
427 /* For now just check the last certificate in the chain */
428 i = sk_X509_num(ctx->chain) - 1;
429 x = sk_X509_value(ctx->chain, i);
430 ok = X509_check_trust(x, ctx->trust, 0);
431 if (ok == X509_TRUST_TRUSTED)
433 ctx->error_depth = i;
434 ctx->current_cert = x;
435 if (ok == X509_TRUST_REJECTED)
436 ctx->error = X509_V_ERR_CERT_REJECTED;
438 ctx->error = X509_V_ERR_CERT_UNTRUSTED;
444 static int check_revocation(X509_STORE_CTX *ctx)
447 if (!(ctx->flags & X509_V_FLAG_CRL_CHECK))
449 if (ctx->flags & X509_V_FLAG_CRL_CHECK_ALL)
452 last = sk_X509_num(ctx->chain) - 1;
453 for(i = 0; i <= last; i++)
455 ctx->error_depth = i;
456 ok = check_cert(ctx);
462 static int check_cert(X509_STORE_CTX *ctx)
464 X509_CRL *crl = NULL;
467 cnum = ctx->error_depth;
468 x = sk_X509_value(ctx->chain, cnum);
469 ctx->current_cert = x;
470 /* Try to retrieve relevant CRL */
471 ok = ctx->get_crl(ctx, &crl, x);
472 /* If error looking up CRL, nothing we can do except
477 ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
478 ok = ctx->verify_cb(0, ctx);
481 ctx->current_crl = crl;
482 ok = ctx->check_crl(ctx, crl);
484 ok = ctx->cert_crl(ctx, crl, x);
486 ctx->current_crl = NULL;
492 /* Retrieve CRL corresponding to certificate: currently just a
493 * subject lookup: maybe use AKID later...
494 * Also might look up any included CRLs too (e.g PKCS#7 signedData).
496 static int get_crl(X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x)
500 ok = X509_STORE_get_by_subject(ctx, X509_LU_CRL, X509_get_issuer_name(x), &xobj);
502 *crl = xobj.data.crl;
506 /* Check CRL validity */
507 static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
510 EVP_PKEY *ikey = NULL;
511 int ok = 0, chnum, cnum, i;
513 cnum = ctx->error_depth;
514 chnum = sk_X509_num(ctx->chain) - 1;
515 /* Find CRL issuer: if not last certificate then issuer
516 * is next certificate in chain.
519 issuer = sk_X509_value(ctx->chain, cnum + 1);
522 issuer = sk_X509_value(ctx->chain, chnum);
523 /* If not self signed, can't check signature */
524 if(!ctx->check_issued(ctx, issuer, issuer))
526 ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER;
527 ok = ctx->verify_cb(0, ctx);
535 /* Attempt to get issuer certificate public key */
536 ikey = X509_get_pubkey(issuer);
540 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
541 ok = ctx->verify_cb(0, ctx);
546 /* Verify CRL signature */
547 if(X509_CRL_verify(crl, ikey) <= 0)
549 ctx->error=X509_V_ERR_CRL_SIGNATURE_FAILURE;
550 ok = ctx->verify_cb(0, ctx);
556 /* OK, CRL signature valid check times */
557 if (ctx->flags & X509_V_FLAG_USE_CHECK_TIME)
558 ptime = &ctx->check_time;
562 i=X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
565 ctx->error=X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
566 ok = ctx->verify_cb(0, ctx);
572 ctx->error=X509_V_ERR_CRL_NOT_YET_VALID;
573 ok = ctx->verify_cb(0, ctx);
577 if(X509_CRL_get_nextUpdate(crl))
579 i=X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
583 ctx->error=X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
584 ok = ctx->verify_cb(0, ctx);
590 ctx->error=X509_V_ERR_CRL_HAS_EXPIRED;
591 ok = ctx->verify_cb(0, ctx);
603 /* Check certificate against CRL */
604 static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
608 /* Look for serial number of certificate in CRL */
609 rtmp.serialNumber = X509_get_serialNumber(x);
610 idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
612 if(idx == -1) return 1;
613 /* Otherwise revoked: want something cleverer than
614 * this to handle entry extensions in V2 CRLs.
616 ctx->error = X509_V_ERR_CERT_REVOKED;
617 ok = ctx->verify_cb(0, ctx);
621 static int internal_verify(X509_STORE_CTX *ctx)
631 n=sk_X509_num(ctx->chain);
632 ctx->error_depth=n-1;
634 xi=sk_X509_value(ctx->chain,n);
635 if (ctx->flags & X509_V_FLAG_USE_CHECK_TIME)
636 ptime = &ctx->check_time;
639 if (ctx->check_issued(ctx, xi, xi))
645 ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
646 ctx->current_cert=xi;
654 xs=sk_X509_value(ctx->chain,n);
658 /* ctx->error=0; not needed */
664 if ((pkey=X509_get_pubkey(xi)) == NULL)
666 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
667 ctx->current_cert=xi;
671 if (X509_verify(xs,pkey) <= 0)
672 /* XXX For the final trusted self-signed cert,
673 * this is a waste of time. That check should
674 * optional so that e.g. 'openssl x509' can be
675 * used to detect invalid self-signatures, but
676 * we don't verify again and again in SSL
677 * handshakes and the like once the cert has
678 * been declared trusted. */
680 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
681 ctx->current_cert=xs;
692 i=X509_cmp_time(X509_get_notBefore(xs), ptime);
695 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
696 ctx->current_cert=xs;
702 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
703 ctx->current_cert=xs;
710 i=X509_cmp_time(X509_get_notAfter(xs), ptime);
713 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
714 ctx->current_cert=xs;
721 ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
722 ctx->current_cert=xs;
729 /* The last error (if any) is still in the error value */
730 ctx->current_cert=xs;
738 xs=sk_X509_value(ctx->chain,n);
746 int X509_cmp_current_time(ASN1_TIME *ctm)
748 return X509_cmp_time(ctm, NULL);
751 int X509_cmp_time(ASN1_TIME *ctm, time_t *cmp_time)
756 char buff1[24],buff2[24],*p;
761 str=(char *)ctm->data;
762 if (ctm->type == V_ASN1_UTCTIME)
764 if ((i < 11) || (i > 17)) return 0;
771 if (i < 13) return 0;
777 if ((*str == 'Z') || (*str == '-') || (*str == '+'))
778 { *(p++)='0'; *(p++)='0'; }
783 /* Skip any fractional seconds... */
787 while ((*str >= '0') && (*str <= '9')) str++;
798 if ((*str != '+') && (str[5] != '-'))
800 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
801 offset+=(str[3]-'0')*10+(str[4]-'0');
806 atm.length=sizeof(buff2);
807 atm.data=(unsigned char *)buff2;
809 X509_time_adj(&atm,-offset*60, cmp_time);
811 if (ctm->type == V_ASN1_UTCTIME)
813 i=(buff1[0]-'0')*10+(buff1[1]-'0');
814 if (i < 50) i+=100; /* cf. RFC 2459 */
815 j=(buff2[0]-'0')*10+(buff2[1]-'0');
818 if (i < j) return -1;
821 i=strcmp(buff1,buff2);
822 if (i == 0) /* wait a second then return younger :-) */
828 ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
830 return X509_time_adj(s, adj, NULL);
833 ASN1_TIME *X509_time_adj(ASN1_TIME *s, long adj, time_t *in_tm)
838 if (in_tm) t = *in_tm;
842 if (s) type = s->type;
843 if (type == V_ASN1_UTCTIME) return ASN1_UTCTIME_set(s,t);
844 if (type == V_ASN1_GENERALIZEDTIME) return ASN1_GENERALIZEDTIME_set(s, t);
845 return ASN1_TIME_set(s, t);
848 int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
850 EVP_PKEY *ktmp=NULL,*ktmp2;
853 if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return 1;
855 for (i=0; i<sk_X509_num(chain); i++)
857 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
860 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
863 if (!EVP_PKEY_missing_parameters(ktmp))
873 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
877 /* first, populate the other certs */
878 for (j=i-1; j >= 0; j--)
880 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
881 EVP_PKEY_copy_parameters(ktmp2,ktmp);
882 EVP_PKEY_free(ktmp2);
885 if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
890 int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
891 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
893 /* This function is (usually) called only once, by
894 * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c).
895 * That function uses locking, so we don't (usually)
896 * have to worry about locking here. For the whole cruel
897 * truth, see crypto/ex_data.c */
898 x509_store_ctx_num++;
899 return CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
900 &x509_store_ctx_method,
901 argl,argp,new_func,dup_func,free_func);
904 int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
906 return CRYPTO_set_ex_data(&ctx->ex_data,idx,data);
909 void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
911 return CRYPTO_get_ex_data(&ctx->ex_data,idx);
914 int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
919 void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
924 int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
926 return ctx->error_depth;
929 X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
931 return ctx->current_cert;
934 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
939 STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
943 STACK_OF(X509) *chain;
944 if (!ctx->chain || !(chain = sk_X509_dup(ctx->chain))) return NULL;
945 for (i = 0; i < sk_X509_num(chain); i++)
947 x = sk_X509_value(chain, i);
948 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
953 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
958 void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
963 int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
965 return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
968 int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
970 return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
973 /* This function is used to set the X509_STORE_CTX purpose and trust
974 * values. This is intended to be used when another structure has its
975 * own trust and purpose values which (if set) will be inherited by
976 * the ctx. If they aren't set then we will usually have a default
977 * purpose in mind which should then be used to set the trust value.
978 * An example of this is SSL use: an SSL structure will have its own
979 * purpose and trust settings which the application can set: if they
980 * aren't set then we use the default of SSL client/server.
983 int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
984 int purpose, int trust)
987 /* If purpose not set use default */
988 if (!purpose) purpose = def_purpose;
989 /* If we have a purpose then check it is valid */
993 idx = X509_PURPOSE_get_by_id(purpose);
996 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
997 X509_R_UNKNOWN_PURPOSE_ID);
1000 ptmp = X509_PURPOSE_get0(idx);
1001 if (ptmp->trust == X509_TRUST_DEFAULT)
1003 idx = X509_PURPOSE_get_by_id(def_purpose);
1006 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
1007 X509_R_UNKNOWN_PURPOSE_ID);
1010 ptmp = X509_PURPOSE_get0(idx);
1012 /* If trust not set then get from purpose default */
1013 if (!trust) trust = ptmp->trust;
1017 idx = X509_TRUST_get_by_id(trust);
1020 X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
1021 X509_R_UNKNOWN_TRUST_ID);
1026 if (purpose && !ctx->purpose) ctx->purpose = purpose;
1027 if (trust && !ctx->trust) ctx->trust = trust;
1031 X509_STORE_CTX *X509_STORE_CTX_new(void)
1033 X509_STORE_CTX *ctx;
1034 ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
1035 if (ctx) memset(ctx, 0, sizeof(X509_STORE_CTX));
1039 void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
1041 X509_STORE_CTX_cleanup(ctx);
1045 void X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
1046 STACK_OF(X509) *chain)
1049 ctx->current_method=0;
1051 ctx->untrusted=chain;
1052 ctx->last_untrusted=0;
1053 ctx->purpose=store->purpose;
1054 ctx->trust=store->trust;
1057 ctx->other_ctx=NULL;
1063 ctx->current_cert=NULL;
1064 ctx->current_issuer=NULL;
1066 /* Inherit callbacks and flags from X509_STORE if not set
1070 ctx->flags = store->flags;
1072 if (store->check_issued)
1073 ctx->check_issued = store->check_issued;
1075 ctx->check_issued = check_issued;
1077 if (store->get_issuer)
1078 ctx->get_issuer = store->get_issuer;
1080 ctx->get_issuer = X509_STORE_CTX_get1_issuer;
1082 if (store->verify_cb)
1083 ctx->verify_cb = store->verify_cb;
1085 ctx->verify_cb = null_callback;
1088 ctx->verify = store->verify;
1090 ctx->verify = internal_verify;
1092 if (store->check_revocation)
1093 ctx->check_revocation = store->check_revocation;
1095 ctx->check_revocation = check_revocation;
1098 ctx->get_crl = store->get_crl;
1100 ctx->get_crl = get_crl;
1102 if (store->check_crl)
1103 ctx->check_crl = store->check_crl;
1105 ctx->check_crl = check_crl;
1107 if (store->cert_crl)
1108 ctx->cert_crl = store->cert_crl;
1110 ctx->cert_crl = cert_crl;
1112 ctx->cleanup = store->cleanup;
1114 memset(&(ctx->ex_data),0,sizeof(CRYPTO_EX_DATA));
1117 /* Set alternative lookup method: just a STACK of trusted certificates.
1118 * This avoids X509_STORE nastiness where it isn't needed.
1121 void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
1123 ctx->other_ctx = sk;
1124 ctx->get_issuer = get_issuer_sk;
1127 void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
1129 if (ctx->cleanup) ctx->cleanup(ctx);
1130 if (ctx->chain != NULL)
1132 sk_X509_pop_free(ctx->chain,X509_free);
1135 CRYPTO_free_ex_data(x509_store_ctx_method,ctx,&(ctx->ex_data));
1136 memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
1139 void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, long flags)
1141 ctx->flags |= flags;
1144 void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, long flags, time_t t)
1146 ctx->check_time = t;
1147 ctx->flags |= X509_V_FLAG_USE_CHECK_TIME;
1150 IMPLEMENT_STACK_OF(X509)
1151 IMPLEMENT_ASN1_SET_OF(X509)
1153 IMPLEMENT_STACK_OF(X509_NAME)
1155 IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
1156 IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)