ocsp_lib.c
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- /* ocsp_lib.c */
- /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
- * project. */
- /* History:
- This file was transfered to Richard Levitte from CertCo by Kathy
- Weinhold in mid-spring 2000 to be included in OpenSSL or released
- as a patch kit. */
- /* ====================================================================
- * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * 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
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
- #include <stdio.h>
- #include <cryptlib.h>
- #include <openssl/objects.h>
- #include <openssl/rand.h>
- #include <openssl/x509.h>
- #include <openssl/pem.h>
- #include <openssl/x509v3.h>
- #include <openssl/ocsp.h>
- /* Convert a certificate and its issuer to an OCSP_CERTID */
- OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
- {
- X509_NAME *iname;
- ASN1_INTEGER *serial;
- ASN1_BIT_STRING *ikey;
- #ifndef OPENSSL_NO_SHA1
- if(!dgst) dgst = EVP_sha1();
- #endif
- if (subject)
- {
- iname = X509_get_issuer_name(subject);
- serial = X509_get_serialNumber(subject);
- }
- else
- {
- iname = X509_get_subject_name(issuer);
- serial = NULL;
- }
- ikey = X509_get0_pubkey_bitstr(issuer);
- return OCSP_cert_id_new(dgst, iname, ikey, serial);
- }
- OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
- X509_NAME *issuerName,
- ASN1_BIT_STRING* issuerKey,
- ASN1_INTEGER *serialNumber)
- {
- int nid;
- unsigned int i;
- X509_ALGOR *alg;
- OCSP_CERTID *cid = NULL;
- unsigned char md[EVP_MAX_MD_SIZE];
- if (!(cid = OCSP_CERTID_new())) goto err;
- alg = cid->hashAlgorithm;
- if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
- if ((nid = EVP_MD_type(dgst)) == NID_undef)
- {
- OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
- goto err;
- }
- if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
- if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
- alg->parameter->type=V_ASN1_NULL;
- if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
- if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
- /* Calculate the issuerKey hash, excluding tag and length */
- EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL);
- if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
- if (serialNumber)
- {
- ASN1_INTEGER_free(cid->serialNumber);
- if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
- }
- return cid;
- digerr:
- OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
- err:
- if (cid) OCSP_CERTID_free(cid);
- return NULL;
- }
- int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
- {
- int ret;
- ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
- if (ret) return ret;
- ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
- if (ret) return ret;
- return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
- }
- int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
- {
- int ret;
- ret = OCSP_id_issuer_cmp(a, b);
- if (ret) return ret;
- return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
- }
- /* Parse a URL and split it up into host, port and path components and whether
- * it is SSL.
- */
- int OCSP_parse_url(char *url, char **phost, char **pport, char **ppath, int *pssl)
- {
- char *p, *buf;
- char *host, *port;
- /* dup the buffer since we are going to mess with it */
- buf = BUF_strdup(url);
- if (!buf) goto mem_err;
- *phost = NULL;
- *pport = NULL;
- *ppath = NULL;
- /* Check for initial colon */
- p = strchr(buf, ':');
- if (!p) goto parse_err;
- *(p++) = ' ';
- if (!strcmp(buf, "http"))
- {
- *pssl = 0;
- port = "80";
- }
- else if (!strcmp(buf, "https"))
- {
- *pssl = 1;
- port = "443";
- }
- else
- goto parse_err;
- /* Check for double slash */
- if ((p[0] != '/') || (p[1] != '/'))
- goto parse_err;
- p += 2;
- host = p;
- /* Check for trailing part of path */
- p = strchr(p, '/');
- if (!p)
- *ppath = BUF_strdup("/");
- else
- {
- *ppath = BUF_strdup(p);
- /* Set start of path to 0 so hostname is valid */
- *p = ' ';
- }
- if (!*ppath) goto mem_err;
- /* Look for optional ':' for port number */
- if ((p = strchr(host, ':')))
- {
- *p = 0;
- port = p + 1;
- }
- else
- {
- /* Not found: set default port */
- if (*pssl) port = "443";
- else port = "80";
- }
- *pport = BUF_strdup(port);
- if (!*pport) goto mem_err;
- *phost = BUF_strdup(host);
- if (!*phost) goto mem_err;
- OPENSSL_free(buf);
- return 1;
- mem_err:
- OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
- goto err;
- parse_err:
- OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
- err:
- if (buf) OPENSSL_free(buf);
- if (*ppath) OPENSSL_free(*ppath);
- if (*pport) OPENSSL_free(*pport);
- if (*phost) OPENSSL_free(*phost);
- return 0;
- }