Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_transform / lib / SecExternalSourceTransform.cpp

diff --git a/Security/libsecurity_transform/lib/SecExternalSourceTransform.cpp b/Security/libsecurity_transform/lib/SecExternalSourceTransform.cpp
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index 0000000..c9571c8
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+++ b/Security/libsecurity_transform/lib/SecExternalSourceTransform.cpp
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+/*
+ * Copyright (c) 2010-2011,2014 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 "SecTransform.h"
+#include "SecCustomTransform.h"
+#include "SecExternalSourceTransform.h"
+#include <dispatch/dispatch.h>
+
+CFStringRef external_source_name = CFSTR("com.apple.security.external_source");
+
+static SecTransformInstanceBlock SecExternalSourceTransformCreateBlock(CFStringRef name, SecTransformRef newTransform, SecTransformImplementationRef ref)
+{
+       return Block_copy(^{ 
+               SecTransformCustomSetAttribute(ref, kSecTransformInputAttributeName, kSecTransformMetaAttributeRequired, kCFBooleanFalse);
+               
+               SecTransformAttributeRef out = SecTranformCustomGetAttribute(ref, kSecTransformOutputAttributeName, kSecTransformMetaAttributeRef);
+               
+               SecTransformSetAttributeAction(ref, kSecTransformActionAttributeNotification, kSecTransformInputAttributeName, ^(SecTransformAttributeRef attribute, CFTypeRef value) {
+                       SecTransformCustomSetAttribute(ref, out, kSecTransformMetaAttributeValue, value);
+                       return (CFTypeRef)NULL;
+               });
+               
+               return (CFErrorRef)NULL;
+       });
+}
+
+SecTransformRef SecExternalSourceTransformCreate(CFErrorRef* error)
+{
+       static dispatch_once_t once;
+       dispatch_once(&once, ^{
+               SecTransformRegister(external_source_name, SecExternalSourceTransformCreateBlock, error);
+       });
+       
+       return SecTransformCreate(external_source_name, error);
+}