X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/libsecurity_apple_x509_cl/lib/DecodedItem.cpp

diff --git a/OSX/libsecurity_apple_x509_cl/lib/DecodedItem.cpp b/OSX/libsecurity_apple_x509_cl/lib/DecodedItem.cpp
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+/*
+ * Copyright (c) 2002,2011,2014 Apple 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.
+ */
+
+
+/*
+ * DecodedItem.cpp - class representing the common portions of NSS-style
+ * certs and CRLs, with extensions parsed and decoded (still in NSS
+ * format).
+ */
+
+#include "DecodedItem.h"
+#include "cldebugging.h"
+#include "AppleX509CLSession.h"
+#include "CSPAttacher.h"
+#include "CLFieldsCommon.h"
+#include "clNssUtils.h"
+#include <Security/cssmapple.h>
+
+
+DecodedItem::DecodedItem(
+	AppleX509CLSession	&session)
+	:	mState(IS_Empty),
+		mAlloc(session),
+		mSession(session),
+		mDecodedExtensions(mCoder, session)
+{
+}
+
+DecodedItem::~DecodedItem()
+{
+	/* nothing for now */
+}
+
+/* 
+ * Search for DecodedExten by AsnOid or "any unknown extension".
+ * Called from getField*() and inferKeyUsage. 
+ * Returns NULL if specified extension not found.
+ */
+const DecodedExten *DecodedItem::findDecodedExt(
+	const CSSM_OID		&extnId,		// for known extensions
+	bool				unknown,		// otherwise		
+	uint32				index, 
+	uint32				&numFields) const
+{
+	unsigned dex;
+	const DecodedExten *rtnExt = NULL;
+	unsigned found = 0;
+	
+	for(dex=0; dex<mDecodedExtensions.numExtensions(); dex++) {
+		const DecodedExten *decodedExt = mDecodedExtensions.getExtension(dex);
+		/*
+		 * known extensions: OID match AND successful decode (In case
+		 *    we encountered a known extension which we couldn't
+		 *    decode and fell back to giving the app an unparsed
+		 *    BER blob). 
+		 * unknown extensions: just know that we didn't decode it
+		 */
+		if( ( !unknown && !decodedExt->berEncoded() &&
+		      (clCompareCssmData(&decodedExt->extnId(), &extnId))
+			) || 
+		    (unknown && decodedExt->berEncoded())
+		   ) {
+			
+			if(found++ == index) {
+				/* the one we want */
+				rtnExt = decodedExt;
+			}
+			if((rtnExt != NULL) && (index != 0)) {
+				/* only determine numFields on search for first one */
+				break;
+			}
+		}
+	}
+	if(rtnExt != NULL) {
+		/* sucessful return  */
+		if(index == 0) {
+			numFields = found;
+		}
+		return rtnExt;
+	}
+	else {
+		return NULL;
+	}
+}
+