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