X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_transform/lib/SecExternalSourceTransform.cpp

diff --git a/libsecurity_transform/lib/SecExternalSourceTransform.cpp b/libsecurity_transform/lib/SecExternalSourceTransform.cpp
new file mode 100644
index 00000000..6a0b0824
--- /dev/null
+++ b/libsecurity_transform/lib/SecExternalSourceTransform.cpp
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+/*
+ *  SecExternalSourceTransform.cpp
+ *  libsecurity_transform
+ *
+ *  Created by J Osborne on 8/17/10.
+ *  Copyright 2010 Apple. All rights reserved.
+ *
+ */
+
+#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);
+}
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