X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/utilities/src/der_null.c

diff --git a/OSX/utilities/src/der_null.c b/OSX/utilities/src/der_null.c
new file mode 100644
index 00000000..b462a031
--- /dev/null
+++ b/OSX/utilities/src/der_null.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2013-2014 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The 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.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+#include <stdio.h>
+
+#include "utilities/SecCFRelease.h"
+#include "utilities/der_plist.h"
+#include "utilities/der_plist_internal.h"
+
+#include <corecrypto/ccder.h>
+#include <CoreFoundation/CoreFoundation.h>
+
+
+const uint8_t* der_decode_null(CFAllocatorRef allocator, CFOptionFlags mutability,
+                                  CFNullRef* nul, CFErrorRef *error,
+                                  const uint8_t* der, const uint8_t *der_end)
+{
+    if (NULL == der)
+        return NULL;
+	
+    size_t payload_size = 0;
+    const uint8_t *payload = ccder_decode_tl(CCDER_NULL, &payload_size, der, der_end);
+	
+	if (NULL == payload || payload_size != 0) {
+        SecCFDERCreateError(kSecDERErrorUnknownEncoding, CFSTR("Unknown null encoding"), NULL, error);
+        return NULL;
+    }
+	
+    *nul = kCFNull;
+	
+    return payload + payload_size;
+}
+
+
+size_t der_sizeof_null(CFNullRef data __unused, CFErrorRef *error)
+{
+    return ccder_sizeof(CCDER_NULL, 0);
+}
+
+
+uint8_t* der_encode_null(CFNullRef boolean __unused, CFErrorRef *error,
+                            const uint8_t *der, uint8_t *der_end)
+{
+	return ccder_encode_tl(CCDER_NULL, 0, der, der_end);
+}