X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/libsecurity_transform/lib/NullTransform.cpp

diff --git a/Security/libsecurity_transform/lib/NullTransform.cpp b/Security/libsecurity_transform/lib/NullTransform.cpp
new file mode 100644
index 00000000..4db1a700
--- /dev/null
+++ b/Security/libsecurity_transform/lib/NullTransform.cpp
@@ -0,0 +1,61 @@
+#include "NullTransform.h"
+
+NullTransform::NullTransform() : Transform(CFSTR("NullTransform"))
+{
+}
+
+
+
+CFTypeRef NullTransform::Make()
+{
+	return CoreFoundationHolder::MakeHolder(gInternalCFObjectName, new NullTransform());
+}
+
+
+
+void NullTransform::AttributeChanged(CFStringRef name, CFTypeRef value)
+{
+	// move input to output, otherwise do nothing
+	if (CFStringCompare(name, kSecTransformInputAttributeName, 0) == kCFCompareEqualTo)
+	{
+		SetAttributeNoCallback(kSecTransformOutputAttributeName, value);
+	}
+}
+
+
+
+std::string NullTransform::DebugDescription()
+{
+	return Transform::DebugDescription() + ": NullTransform";
+}
+
+
+
+class NullTransformFactory : public TransformFactory
+{
+public:
+	NullTransformFactory();
+	
+	virtual CFTypeRef Make();
+};
+
+
+
+TransformFactory* NullTransform::MakeTransformFactory()
+{
+	return new NullTransformFactory();
+}
+
+
+
+NullTransformFactory::NullTransformFactory() : TransformFactory(CFSTR("Null Transform"))
+{
+}
+
+
+
+CFTypeRef NullTransformFactory::Make()
+{
+	return NullTransform::Make();
+}
+