--- /dev/null
+/*
+ * Copyright (c) 2002,2005 Apple Computer, Inc. All Rights Reserved.
+ *
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ *
+ * This Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
+ * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
+ * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
+ * specific language governing rights and limitations under the License.
+ */
+
+
+/*
+ * findOcspUrl.cpp - find URL for OCSP for aspecified cert.
+ */
+
+#include <Security/SecAsn1Coder.h>
+#include <clAppUtils/CertParser.h>
+#include <utilLib/common.h>
+
+/*
+ * Examine cert, looking for AuthorityInfoAccess, with id-ad-ocsp URIs. Return
+ * the first URL found.
+ */
+CSSM_DATA *ocspUrlFromCert(
+ CertParser &subject,
+ SecAsn1CoderRef coder)
+{
+ CE_AuthorityInfoAccess *aia = (CE_AuthorityInfoAccess *)
+ subject.extensionForOid(CSSMOID_AuthorityInfoAccess);
+ if(aia == NULL) {
+ printf("***No AIA extension found; OCSP aborted.\n");
+ return NULL;
+ }
+ CSSM_DATA *url = NULL;
+ for(unsigned dex=0; dex<aia->numAccessDescriptions; dex++) {
+ CE_AccessDescription *ad = &aia->accessDescriptions[dex];
+ if(!appCompareCssmData(&ad->accessMethod, &CSSMOID_AD_OCSP)) {
+ continue;
+ }
+ CE_GeneralName *genName = &ad->accessLocation;
+ if(genName->nameType != GNT_URI) {
+ printf("tpOcspUrlsFromCert: CSSMOID_AD_OCSP, but not type URI");
+ continue;
+ }
+
+ /* got one */
+ url = (CSSM_DATA *)SecAsn1Malloc(coder, sizeof(CSSM_DATA));
+ SecAsn1AllocCopyItem(coder, &genName->name, url);
+ return url;
+ }
+
+ printf("***No AIA extension with URI found; OCSP aborted.\n");
+ return NULL;
+}