mirror of
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240 lines
6.5 KiB
C
240 lines
6.5 KiB
C
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/* $OpenBSD: ocsp_lib.c,v 1.23 2018/08/24 20:03:21 tb Exp $ */
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/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
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* project. */
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/* History:
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This file was transfered to Richard Levitte from CertCo by Kathy
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Weinhold in mid-spring 2000 to be included in OpenSSL or released
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as a patch kit. */
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/* ====================================================================
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* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <openssl/opensslconf.h>
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#include <openssl/asn1t.h>
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#include <openssl/err.h>
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#include <openssl/objects.h>
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#include <openssl/ocsp.h>
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#include <openssl/pem.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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/* Convert a certificate and its issuer to an OCSP_CERTID */
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OCSP_CERTID *
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OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject, const X509 *issuer)
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{
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X509_NAME *iname;
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const ASN1_INTEGER *serial;
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ASN1_BIT_STRING *ikey;
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#ifndef OPENSSL_NO_SHA1
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if (!dgst)
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dgst = EVP_sha1();
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#endif
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if (subject) {
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iname = X509_get_issuer_name(subject);
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serial = X509_get0_serialNumber(subject);
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} else {
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iname = X509_get_subject_name(issuer);
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serial = NULL;
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}
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ikey = X509_get0_pubkey_bitstr(issuer);
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return OCSP_cert_id_new(dgst, iname, ikey, serial);
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}
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OCSP_CERTID *
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OCSP_cert_id_new(const EVP_MD *dgst, const X509_NAME *issuerName,
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const ASN1_BIT_STRING *issuerKey, const ASN1_INTEGER *serialNumber)
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{
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int nid;
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unsigned int i;
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X509_ALGOR *alg;
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OCSP_CERTID *cid = NULL;
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unsigned char md[EVP_MAX_MD_SIZE];
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if (!(cid = OCSP_CERTID_new()))
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goto err;
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alg = cid->hashAlgorithm;
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if (alg->algorithm != NULL)
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ASN1_OBJECT_free(alg->algorithm);
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if ((nid = EVP_MD_type(dgst)) == NID_undef) {
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OCSPerror(OCSP_R_UNKNOWN_NID);
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goto err;
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}
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if (!(alg->algorithm = OBJ_nid2obj(nid)))
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goto err;
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if ((alg->parameter = ASN1_TYPE_new()) == NULL)
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goto err;
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alg->parameter->type = V_ASN1_NULL;
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if (!X509_NAME_digest(issuerName, dgst, md, &i))
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goto digerr;
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if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i)))
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goto err;
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/* Calculate the issuerKey hash, excluding tag and length */
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if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
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goto err;
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if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i)))
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goto err;
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if (serialNumber) {
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ASN1_INTEGER_free(cid->serialNumber);
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if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber)))
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goto err;
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}
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return cid;
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digerr:
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OCSPerror(OCSP_R_DIGEST_ERR);
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err:
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if (cid)
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OCSP_CERTID_free(cid);
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return NULL;
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}
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int
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OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
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{
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int ret;
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ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
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if (ret)
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return ret;
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ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
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if (ret)
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return ret;
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return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
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}
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int
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OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
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{
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int ret;
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ret = OCSP_id_issuer_cmp(a, b);
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if (ret)
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return ret;
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return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
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}
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/* Parse a URL and split it up into host, port and path components and whether
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* it is SSL.
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*/
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int
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OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
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int *pssl)
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{
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char *host, *path, *port, *tmp;
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*phost = *pport = *ppath = NULL;
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*pssl = 0;
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if (strncmp(url, "https://", 8) == 0) {
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*pssl = 1;
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host = strdup(url + 8);
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} else if (strncmp(url, "http://", 7) == 0)
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host = strdup(url + 7);
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else {
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OCSPerror(OCSP_R_ERROR_PARSING_URL);
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return 0;
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}
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if (host == NULL) {
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OCSPerror(ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if ((tmp = strchr(host, '/')) != NULL) {
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path = strdup(tmp);
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*tmp = '\0';
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} else
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path = strdup("/");
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if ((tmp = strchr(host, ':')) != NULL ) {
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port = strdup(tmp + 1);
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*tmp = '\0';
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} else {
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if (*pssl)
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port = strdup("443");
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else
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port = strdup("80");
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}
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if (path == NULL || port == NULL) {
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free(host);
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free(path);
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free(port);
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OCSPerror(ERR_R_MALLOC_FAILURE);
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return 0;
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}
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*phost = host;
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*ppath = path;
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*pport = port;
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return 1;
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}
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OCSP_CERTID *
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OCSP_CERTID_dup(OCSP_CERTID *x)
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{
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return ASN1_item_dup(&OCSP_CERTID_it, x);
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}
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