diff options
Diffstat (limited to 'crypto/ocsp/ocsp_vfy.c')
| -rw-r--r-- | crypto/ocsp/ocsp_vfy.c | 736 |
1 files changed, 362 insertions, 374 deletions
diff --git a/crypto/ocsp/ocsp_vfy.c b/crypto/ocsp/ocsp_vfy.c index fc0d4cc0f5..6c0ccb565d 100644 --- a/crypto/ocsp/ocsp_vfy.c +++ b/crypto/ocsp/ocsp_vfy.c @@ -1,6 +1,7 @@ /* ocsp_vfy.c */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 2000. +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project + * 2000. */ /* ==================================================================== * Copyright (c) 2000-2004 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -60,394 +61,381 @@ #include <openssl/err.h> #include <string.h> -static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, STACK_OF(X509) *certs, - X509_STORE *st, unsigned long flags); +static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, + STACK_OF(X509) *certs, X509_STORE *st, + unsigned long flags); static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id); -static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, unsigned long flags); -static int ocsp_check_ids(STACK_OF(OCSP_SINGLERESP) *sresp, OCSP_CERTID **ret); -static int ocsp_match_issuerid(X509 *cert, OCSP_CERTID *cid, STACK_OF(OCSP_SINGLERESP) *sresp); +static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, + unsigned long flags); +static int ocsp_check_ids(STACK_OF(OCSP_SINGLERESP) *sresp, + OCSP_CERTID **ret); +static int ocsp_match_issuerid(X509 *cert, OCSP_CERTID *cid, + STACK_OF(OCSP_SINGLERESP) *sresp); static int ocsp_check_delegated(X509 *x, int flags); -static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, X509_NAME *nm, STACK_OF(X509) *certs, - X509_STORE *st, unsigned long flags); +static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, + X509_NAME *nm, STACK_OF(X509) *certs, + X509_STORE *st, unsigned long flags); /* Verify a basic response message */ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs, - X509_STORE *st, unsigned long flags) - { - X509 *signer, *x; - STACK_OF(X509) *chain = NULL; - X509_STORE_CTX ctx; - int i, ret = 0; - ret = ocsp_find_signer(&signer, bs, certs, st, flags); - if (!ret) - { - OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND); - goto end; - } - if ((ret == 2) && (flags & OCSP_TRUSTOTHER)) - flags |= OCSP_NOVERIFY; - if (!(flags & OCSP_NOSIGS)) - { - EVP_PKEY *skey; - skey = X509_get_pubkey(signer); - if (skey) - { - ret = OCSP_BASICRESP_verify(bs, skey, 0); - EVP_PKEY_free(skey); - } - if(!skey || ret <= 0) - { - OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNATURE_FAILURE); - goto end; - } - } - if (!(flags & OCSP_NOVERIFY)) - { - int init_res; - if(flags & OCSP_NOCHAIN) - init_res = X509_STORE_CTX_init(&ctx, st, signer, NULL); - else - init_res = X509_STORE_CTX_init(&ctx, st, signer, bs->certs); - if(!init_res) - { - ret = -1; - OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,ERR_R_X509_LIB); - goto end; - } - - X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER); - ret = X509_verify_cert(&ctx); - chain = X509_STORE_CTX_get1_chain(&ctx); - X509_STORE_CTX_cleanup(&ctx); - if (ret <= 0) - { - i = X509_STORE_CTX_get_error(&ctx); - OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,OCSP_R_CERTIFICATE_VERIFY_ERROR); - ERR_add_error_data(2, "Verify error:", - X509_verify_cert_error_string(i)); - goto end; - } - if(flags & OCSP_NOCHECKS) - { - ret = 1; - goto end; - } - /* At this point we have a valid certificate chain - * need to verify it against the OCSP issuer criteria. - */ - ret = ocsp_check_issuer(bs, chain, flags); - - /* If fatal error or valid match then finish */ - if (ret != 0) goto end; - - /* Easy case: explicitly trusted. Get root CA and - * check for explicit trust - */ - if(flags & OCSP_NOEXPLICIT) goto end; - - x = sk_X509_value(chain, sk_X509_num(chain) - 1); - if(X509_check_trust(x, NID_OCSP_sign, 0) != X509_TRUST_TRUSTED) - { - OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,OCSP_R_ROOT_CA_NOT_TRUSTED); - goto end; - } - ret = 1; - } - - - - end: - if(chain) sk_X509_pop_free(chain, X509_free); - return ret; - } - - -static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, STACK_OF(X509) *certs, - X509_STORE *st, unsigned long flags) - { - X509 *signer; - OCSP_RESPID *rid = bs->tbsResponseData->responderId; - if ((signer = ocsp_find_signer_sk(certs, rid))) - { - *psigner = signer; - return 2; - } - if(!(flags & OCSP_NOINTERN) && - (signer = ocsp_find_signer_sk(bs->certs, rid))) - { - *psigner = signer; - return 1; - } - /* Maybe lookup from store if by subject name */ - - *psigner = NULL; - return 0; - } + X509_STORE *st, unsigned long flags) +{ + X509 *signer, *x; + STACK_OF(X509) *chain = NULL; + X509_STORE_CTX ctx; + int i, ret = 0; + ret = ocsp_find_signer(&signer, bs, certs, st, flags); + if (!ret) { + OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, + OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND); + goto end; + } + if ((ret == 2) && (flags & OCSP_TRUSTOTHER)) + flags |= OCSP_NOVERIFY; + if (!(flags & OCSP_NOSIGS)) { + EVP_PKEY *skey; + skey = X509_get_pubkey(signer); + if (skey) { + ret = OCSP_BASICRESP_verify(bs, skey, 0); + EVP_PKEY_free(skey); + } + if (!skey || ret <= 0) { + OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNATURE_FAILURE); + goto end; + } + } + if (!(flags & OCSP_NOVERIFY)) { + int init_res; + if (flags & OCSP_NOCHAIN) + init_res = X509_STORE_CTX_init(&ctx, st, signer, NULL); + else + init_res = X509_STORE_CTX_init(&ctx, st, signer, bs->certs); + if (!init_res) { + ret = -1; + OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, ERR_R_X509_LIB); + goto end; + } + X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER); + ret = X509_verify_cert(&ctx); + chain = X509_STORE_CTX_get1_chain(&ctx); + X509_STORE_CTX_cleanup(&ctx); + if (ret <= 0) { + i = X509_STORE_CTX_get_error(&ctx); + OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, + OCSP_R_CERTIFICATE_VERIFY_ERROR); + ERR_add_error_data(2, "Verify error:", + X509_verify_cert_error_string(i)); + goto end; + } + if (flags & OCSP_NOCHECKS) { + ret = 1; + goto end; + } + /* + * At this point we have a valid certificate chain need to verify it + * against the OCSP issuer criteria. + */ + ret = ocsp_check_issuer(bs, chain, flags); + + /* If fatal error or valid match then finish */ + if (ret != 0) + goto end; + + /* + * Easy case: explicitly trusted. Get root CA and check for explicit + * trust + */ + if (flags & OCSP_NOEXPLICIT) + goto end; + + x = sk_X509_value(chain, sk_X509_num(chain) - 1); + if (X509_check_trust(x, NID_OCSP_sign, 0) != X509_TRUST_TRUSTED) { + OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_ROOT_CA_NOT_TRUSTED); + goto end; + } + ret = 1; + } + + end: + if (chain) + sk_X509_pop_free(chain, X509_free); + return ret; +} + +static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, + STACK_OF(X509) *certs, X509_STORE *st, + unsigned long flags) +{ + X509 *signer; + OCSP_RESPID *rid = bs->tbsResponseData->responderId; + if ((signer = ocsp_find_signer_sk(certs, rid))) { + *psigner = signer; + return 2; + } + if (!(flags & OCSP_NOINTERN) && + (signer = ocsp_find_signer_sk(bs->certs, rid))) { + *psigner = signer; + return 1; + } + /* Maybe lookup from store if by subject name */ + + *psigner = NULL; + return 0; +} static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id) - { - int i; - unsigned char tmphash[SHA_DIGEST_LENGTH], *keyhash; - X509 *x; - - /* Easy if lookup by name */ - if (id->type == V_OCSP_RESPID_NAME) - return X509_find_by_subject(certs, id->value.byName); - - /* Lookup by key hash */ - - /* If key hash isn't SHA1 length then forget it */ - if (id->value.byKey->length != SHA_DIGEST_LENGTH) return NULL; - keyhash = id->value.byKey->data; - /* Calculate hash of each key and compare */ - for (i = 0; i < sk_X509_num(certs); i++) - { - x = sk_X509_value(certs, i); - X509_pubkey_digest(x, EVP_sha1(), tmphash, NULL); - if(!memcmp(keyhash, tmphash, SHA_DIGEST_LENGTH)) - return x; - } - return NULL; - } - - -static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, unsigned long flags) - { - STACK_OF(OCSP_SINGLERESP) *sresp; - X509 *signer, *sca; - OCSP_CERTID *caid = NULL; - int i; - sresp = bs->tbsResponseData->responses; - - if (sk_X509_num(chain) <= 0) - { - OCSPerr(OCSP_F_OCSP_CHECK_ISSUER, OCSP_R_NO_CERTIFICATES_IN_CHAIN); - return -1; - } - - /* See if the issuer IDs match. */ - i = ocsp_check_ids(sresp, &caid); - - /* If ID mismatch or other error then return */ - if (i <= 0) return i; - - signer = sk_X509_value(chain, 0); - /* Check to see if OCSP responder CA matches request CA */ - if (sk_X509_num(chain) > 1) - { - sca = sk_X509_value(chain, 1); - i = ocsp_match_issuerid(sca, caid, sresp); - if (i < 0) return i; - if (i) - { - /* We have a match, if extensions OK then success */ - if (ocsp_check_delegated(signer, flags)) return 1; - return 0; - } - } - - /* Otherwise check if OCSP request signed directly by request CA */ - return ocsp_match_issuerid(signer, caid, sresp); - } - - -/* Check the issuer certificate IDs for equality. If there is a mismatch with the same - * algorithm then there's no point trying to match any certificates against the issuer. - * If the issuer IDs all match then we just need to check equality against one of them. +{ + int i; + unsigned char tmphash[SHA_DIGEST_LENGTH], *keyhash; + X509 *x; + + /* Easy if lookup by name */ + if (id->type == V_OCSP_RESPID_NAME) + return X509_find_by_subject(certs, id->value.byName); + + /* Lookup by key hash */ + + /* If key hash isn't SHA1 length then forget it */ + if (id->value.byKey->length != SHA_DIGEST_LENGTH) + return NULL; + keyhash = id->value.byKey->data; + /* Calculate hash of each key and compare */ + for (i = 0; i < sk_X509_num(certs); i++) { + x = sk_X509_value(certs, i); + X509_pubkey_digest(x, EVP_sha1(), tmphash, NULL); + if (!memcmp(keyhash, tmphash, SHA_DIGEST_LENGTH)) + return x; + } + return NULL; +} + +static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, + unsigned long flags) +{ + STACK_OF(OCSP_SINGLERESP) *sresp; + X509 *signer, *sca; + OCSP_CERTID *caid = NULL; + int i; + sresp = bs->tbsResponseData->responses; + + if (sk_X509_num(chain) <= 0) { + OCSPerr(OCSP_F_OCSP_CHECK_ISSUER, OCSP_R_NO_CERTIFICATES_IN_CHAIN); + return -1; + } + + /* See if the issuer IDs match. */ + i = ocsp_check_ids(sresp, &caid); + + /* If ID mismatch or other error then return */ + if (i <= 0) + return i; + + signer = sk_X509_value(chain, 0); + /* Check to see if OCSP responder CA matches request CA */ + if (sk_X509_num(chain) > 1) { + sca = sk_X509_value(chain, 1); + i = ocsp_match_issuerid(sca, caid, sresp); + if (i < 0) + return i; + if (i) { + /* We have a match, if extensions OK then success */ + if (ocsp_check_delegated(signer, flags)) + return 1; + return 0; + } + } + + /* Otherwise check if OCSP request signed directly by request CA */ + return ocsp_match_issuerid(signer, caid, sresp); +} + +/* + * Check the issuer certificate IDs for equality. If there is a mismatch with + * the same algorithm then there's no point trying to match any certificates + * against the issuer. If the issuer IDs all match then we just need to check + * equality against one of them. */ - + static int ocsp_check_ids(STACK_OF(OCSP_SINGLERESP) *sresp, OCSP_CERTID **ret) - { - OCSP_CERTID *tmpid, *cid; - int i, idcount; - - idcount = sk_OCSP_SINGLERESP_num(sresp); - if (idcount <= 0) - { - OCSPerr(OCSP_F_OCSP_CHECK_IDS, OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA); - return -1; - } - - cid = sk_OCSP_SINGLERESP_value(sresp, 0)->certId; - - *ret = NULL; - - for (i = 1; i < idcount; i++) - { - tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId; - /* Check to see if IDs match */ - if (OCSP_id_issuer_cmp(cid, tmpid)) - { - /* If algoritm mismatch let caller deal with it */ - if (OBJ_cmp(tmpid->hashAlgorithm->algorithm, - cid->hashAlgorithm->algorithm)) - return 2; - /* Else mismatch */ - return 0; - } - } - - /* All IDs match: only need to check one ID */ - *ret = cid; - return 1; - } +{ + OCSP_CERTID *tmpid, *cid; + int i, idcount; + + idcount = sk_OCSP_SINGLERESP_num(sresp); + if (idcount <= 0) { + OCSPerr(OCSP_F_OCSP_CHECK_IDS, + OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA); + return -1; + } + + cid = sk_OCSP_SINGLERESP_value(sresp, 0)->certId; + + *ret = NULL; + + for (i = 1; i < idcount; i++) { + tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId; + /* Check to see if IDs match */ + if (OCSP_id_issuer_cmp(cid, tmpid)) { + /* If algoritm mismatch let caller deal with it */ + if (OBJ_cmp(tmpid->hashAlgorithm->algorithm, + cid->hashAlgorithm->algorithm)) + return 2; + /* Else mismatch */ + return 0; + } + } + /* All IDs match: only need to check one ID */ + *ret = cid; + return 1; +} static int ocsp_match_issuerid(X509 *cert, OCSP_CERTID *cid, - STACK_OF(OCSP_SINGLERESP) *sresp) - { - /* If only one ID to match then do it */ - if(cid) - { - const EVP_MD *dgst; - X509_NAME *iname; - int mdlen; - unsigned char md[EVP_MAX_MD_SIZE]; - if (!(dgst = EVP_get_digestbyobj(cid->hashAlgorithm->algorithm))) - { - OCSPerr(OCSP_F_OCSP_MATCH_ISSUERID, OCSP_R_UNKNOWN_MESSAGE_DIGEST); - return -1; - } - - mdlen = EVP_MD_size(dgst); - if (mdlen < 0) - return -1; - if ((cid->issuerNameHash->length != mdlen) || - (cid->issuerKeyHash->length != mdlen)) - return 0; - iname = X509_get_subject_name(cert); - if (!X509_NAME_digest(iname, dgst, md, NULL)) - return -1; - if (memcmp(md, cid->issuerNameHash->data, mdlen)) - return 0; - X509_pubkey_digest(cert, dgst, md, NULL); - if (memcmp(md, cid->issuerKeyHash->data, mdlen)) - return 0; - - return 1; - - } - else - { - /* We have to match the whole lot */ - int i, ret; - OCSP_CERTID *tmpid; - for (i = 0; i < sk_OCSP_SINGLERESP_num(sresp); i++) - { - tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId; - ret = ocsp_match_issuerid(cert, tmpid, NULL); - if (ret <= 0) return ret; - } - return 1; - } - - } + STACK_OF(OCSP_SINGLERESP) *sresp) +{ + /* If only one ID to match then do it */ + if (cid) { + const EVP_MD *dgst; + X509_NAME *iname; + int mdlen; + unsigned char md[EVP_MAX_MD_SIZE]; + if (!(dgst = EVP_get_digestbyobj(cid->hashAlgorithm->algorithm))) { + OCSPerr(OCSP_F_OCSP_MATCH_ISSUERID, + OCSP_R_UNKNOWN_MESSAGE_DIGEST); + return -1; + } + + mdlen = EVP_MD_size(dgst); + if (mdlen < 0) + return -1; + if ((cid->issuerNameHash->length != mdlen) || + (cid->issuerKeyHash->length != mdlen)) + return 0; + iname = X509_get_subject_name(cert); + if (!X509_NAME_digest(iname, dgst, md, NULL)) + return -1; + if (memcmp(md, cid->issuerNameHash->data, mdlen)) + return 0; + X509_pubkey_digest(cert, dgst, md, NULL); + if (memcmp(md, cid->issuerKeyHash->data, mdlen)) + return 0; + + return 1; + + } else { + /* We have to match the whole lot */ + int i, ret; + OCSP_CERTID *tmpid; + for (i = 0; i < sk_OCSP_SINGLERESP_num(sresp); i++) { + tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId; + ret = ocsp_match_issuerid(cert, tmpid, NULL); + if (ret <= 0) + return ret; + } + return 1; + } + +} static int ocsp_check_delegated(X509 *x, int flags) - { - X509_check_purpose(x, -1, 0); - if ((x->ex_flags & EXFLAG_XKUSAGE) && - (x->ex_xkusage & XKU_OCSP_SIGN)) - return 1; - OCSPerr(OCSP_F_OCSP_CHECK_DELEGATED, OCSP_R_MISSING_OCSPSIGNING_USAGE); - return 0; - } - -/* Verify an OCSP request. This is fortunately much easier than OCSP - * response verify. Just find the signers certificate and verify it - * against a given trust value. +{ + X509_check_purpose(x, -1, 0); + if ((x->ex_flags & EXFLAG_XKUSAGE) && (x->ex_xkusage & XKU_OCSP_SIGN)) + return 1; + OCSPerr(OCSP_F_OCSP_CHECK_DELEGATED, OCSP_R_MISSING_OCSPSIGNING_USAGE); + return 0; +} + +/* + * Verify an OCSP request. This is fortunately much easier than OCSP response + * verify. Just find the signers certificate and verify it against a given + * trust value. */ -int OCSP_request_verify(OCSP_REQUEST *req, STACK_OF(X509) *certs, X509_STORE *store, unsigned long flags) - { - X509 *signer; - X509_NAME *nm; - GENERAL_NAME *gen; - int ret; - X509_STORE_CTX ctx; - if (!req->optionalSignature) - { - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_REQUEST_NOT_SIGNED); - return 0; - } - gen = req->tbsRequest->requestorName; - if (!gen || gen->type != GEN_DIRNAME) - { - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE); - return 0; - } - nm = gen->d.directoryName; - ret = ocsp_req_find_signer(&signer, req, nm, certs, store, flags); - if (ret <= 0) - { - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND); - return 0; - } - if ((ret == 2) && (flags & OCSP_TRUSTOTHER)) - flags |= OCSP_NOVERIFY; - if (!(flags & OCSP_NOSIGS)) - { - EVP_PKEY *skey; - skey = X509_get_pubkey(signer); - ret = OCSP_REQUEST_verify(req, skey); - EVP_PKEY_free(skey); - if(ret <= 0) - { - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_SIGNATURE_FAILURE); - return 0; - } - } - if (!(flags & OCSP_NOVERIFY)) - { - int init_res; - if(flags & OCSP_NOCHAIN) - init_res = X509_STORE_CTX_init(&ctx, store, signer, NULL); - else - init_res = X509_STORE_CTX_init(&ctx, store, signer, - req->optionalSignature->certs); - if(!init_res) - { - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY,ERR_R_X509_LIB); - return 0; - } - - X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER); - X509_STORE_CTX_set_trust(&ctx, X509_TRUST_OCSP_REQUEST); - ret = X509_verify_cert(&ctx); - X509_STORE_CTX_cleanup(&ctx); - if (ret <= 0) - { - ret = X509_STORE_CTX_get_error(&ctx); - OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY,OCSP_R_CERTIFICATE_VERIFY_ERROR); - ERR_add_error_data(2, "Verify error:", - X509_verify_cert_error_string(ret)); - return 0; - } - } - return 1; +int OCSP_request_verify(OCSP_REQUEST *req, STACK_OF(X509) *certs, + X509_STORE *store, unsigned long flags) +{ + X509 *signer; + X509_NAME *nm; + GENERAL_NAME *gen; + int ret; + X509_STORE_CTX ctx; + if (!req->optionalSignature) { + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_REQUEST_NOT_SIGNED); + return 0; + } + gen = req->tbsRequest->requestorName; + if (!gen || gen->type != GEN_DIRNAME) { + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, + OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE); + return 0; + } + nm = gen->d.directoryName; + ret = ocsp_req_find_signer(&signer, req, nm, certs, store, flags); + if (ret <= 0) { + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, + OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND); + return 0; + } + if ((ret == 2) && (flags & OCSP_TRUSTOTHER)) + flags |= OCSP_NOVERIFY; + if (!(flags & OCSP_NOSIGS)) { + EVP_PKEY *skey; + skey = X509_get_pubkey(signer); + ret = OCSP_REQUEST_verify(req, skey); + EVP_PKEY_free(skey); + if (ret <= 0) { + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_SIGNATURE_FAILURE); + return 0; + } + } + if (!(flags & OCSP_NOVERIFY)) { + int init_res; + if (flags & OCSP_NOCHAIN) + init_res = X509_STORE_CTX_init(&ctx, store, signer, NULL); + else + init_res = X509_STORE_CTX_init(&ctx, store, signer, + req->optionalSignature->certs); + if (!init_res) { + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, ERR_R_X509_LIB); + return 0; } -static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, X509_NAME *nm, STACK_OF(X509) *certs, - X509_STORE *st, unsigned long flags) - { - X509 *signer; - if(!(flags & OCSP_NOINTERN)) - { - signer = X509_find_by_subject(req->optionalSignature->certs, nm); - if (signer) - { - *psigner = signer; - return 1; - } - } - - signer = X509_find_by_subject(certs, nm); - if (signer) - { - *psigner = signer; - return 2; - } - return 0; - } + X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER); + X509_STORE_CTX_set_trust(&ctx, X509_TRUST_OCSP_REQUEST); + ret = X509_verify_cert(&ctx); + X509_STORE_CTX_cleanup(&ctx); + if (ret <= 0) { + ret = X509_STORE_CTX_get_error(&ctx); + OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, + OCSP_R_CERTIFICATE_VERIFY_ERROR); + ERR_add_error_data(2, "Verify error:", + X509_verify_cert_error_string(ret)); + return 0; + } + } + return 1; +} + +static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, + X509_NAME *nm, STACK_OF(X509) *certs, + X509_STORE *st, unsigned long flags) +{ + X509 *signer; + if (!(flags & OCSP_NOINTERN)) { + signer = X509_find_by_subject(req->optionalSignature->certs, nm); + if (signer) { + *psigner = signer; + return 1; + } + } + + signer = X509_find_by_subject(certs, nm); + if (signer) { + *psigner = signer; + return 2; + } + return 0; +} |