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262 lines
6.9 KiB
C
262 lines
6.9 KiB
C
/* ocsp_lib.c */
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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 <cryptlib.h>
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#include <openssl/objects.h>
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#include <openssl/rand.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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#include <openssl/x509v3.h>
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#include <openssl/ocsp.h>
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/* Convert a certificate and its issuer to an OCSP_CERTID */
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OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
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{
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X509_NAME *iname;
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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) dgst = EVP_sha1();
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#endif
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if (subject)
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{
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iname = X509_get_issuer_name(subject);
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serial = X509_get_serialNumber(subject);
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}
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else
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{
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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 *OCSP_cert_id_new(const EVP_MD *dgst,
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X509_NAME *issuerName,
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ASN1_BIT_STRING* issuerKey,
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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())) goto err;
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alg = cid->hashAlgorithm;
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if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
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if ((nid = EVP_MD_type(dgst)) == NID_undef)
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{
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OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
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goto err;
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}
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if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
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if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
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alg->parameter->type=V_ASN1_NULL;
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if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
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if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
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/* Calculate the issuerKey hash, excluding tag and length */
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EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst);
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if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
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if (serialNumber)
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{
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ASN1_INTEGER_free(cid->serialNumber);
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if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
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}
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return cid;
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digerr:
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OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
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err:
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if (cid) OCSP_CERTID_free(cid);
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return NULL;
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}
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int 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) return ret;
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ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
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if (ret) return ret;
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return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
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}
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int 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) 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 OCSP_parse_url(char *url, char **phost, char **pport, char **ppath, int *pssl)
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{
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char *p, *buf;
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char *host, *port;
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/* dup the buffer since we are going to mess with it */
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buf = BUF_strdup(url);
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if (!buf) goto mem_err;
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*phost = NULL;
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*pport = NULL;
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*ppath = NULL;
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/* Check for initial colon */
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p = strchr(buf, ':');
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if (!p) goto parse_err;
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*(p++) = '\0';
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if (!strcmp(buf, "http"))
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{
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*pssl = 0;
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port = "80";
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}
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else if (!strcmp(buf, "https"))
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{
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*pssl = 1;
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port = "443";
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}
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else
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goto parse_err;
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/* Check for double slash */
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if ((p[0] != '/') || (p[1] != '/'))
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goto parse_err;
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p += 2;
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host = p;
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/* Check for trailing part of path */
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p = strchr(p, '/');
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if (!p)
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*ppath = BUF_strdup("/");
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else
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{
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*ppath = BUF_strdup(p);
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/* Set start of path to 0 so hostname is valid */
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*p = '\0';
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}
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if (!*ppath) goto mem_err;
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/* Look for optional ':' for port number */
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if ((p = strchr(host, ':')))
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{
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*p = 0;
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port = p + 1;
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}
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else
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{
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/* Not found: set default port */
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if (*pssl) port = "443";
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else port = "80";
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}
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*pport = BUF_strdup(port);
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if (!*pport) goto mem_err;
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*phost = BUF_strdup(host);
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if (!*phost) goto mem_err;
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OPENSSL_free(buf);
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return 1;
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mem_err:
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OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
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goto err;
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parse_err:
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OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
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err:
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if (*ppath) OPENSSL_free(*ppath);
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if (*pport) OPENSSL_free(*pport);
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if (*phost) OPENSSL_free(*phost);
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return 0;
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}
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