X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_filedb/lib/MetaAttribute.h?ds=inline

diff --git a/libsecurity_filedb/lib/MetaAttribute.h b/libsecurity_filedb/lib/MetaAttribute.h
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--- a/libsecurity_filedb/lib/MetaAttribute.h
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-/*
- * Copyright (c) 2000-2001 Apple Computer, 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.
- */
-
-
-//
-// MetaAttribute.h
-//
-
-#ifndef _H_APPLEDL_METAATTRIBUTE
-#define _H_APPLEDL_METAATTRIBUTE
-
-#include "DbValue.h"
-#include <memory>
-
-namespace Security
-{
-
-// A base class for all meta attributes.
-
-class MetaAttribute
-{
-public:
-	typedef CSSM_DB_ATTRIBUTE_FORMAT Format;
-	
-	virtual ~MetaAttribute();
-	
-	// construct an appropriate subclass of MetaAttribute
-	static MetaAttribute *create(Format format, uint32 attributeIndex,
-		uint32 attributeId);
-
-	Format attributeFormat() const { return mFormat; }
-	uint32 attributeIndex() const { return mAttributeIndex; }
-	uint32 attributeId() const { return mAttributeId; }
-
-	void packAttribute(WriteSection &ws, uint32 &valueOffset,
-		uint32 numValues, const CSSM_DATA *values) const;
-	void unpackAttribute(const ReadSection &rs, Allocator &allocator,
-		uint32 &numValues, CSSM_DATA *&values) const;
-		
-	uint32 getNumberOfValues(const ReadSection &rs) const;
-	void copyValueBytes(uint32 valueIndex, const ReadSection &rs, WriteSection &ws,
-		uint32 &writeOffset) const;
-
-	// interface required of all subclasses, implemented with templates below
-	virtual DbValue *createValue(const CSSM_DATA &data) const = 0;
-	virtual DbValue *createValue(const ReadSection &rs, uint32 &offset) const = 0;
-	virtual void packValue(WriteSection &ws, uint32 &offset, const CSSM_DATA &data) const = 0;
-	virtual void unpackValue(const ReadSection &rs, uint32 &offset, CSSM_DATA &data,
-		Allocator &allocator) const = 0;
-	virtual void skipValue(const ReadSection &rs, uint32 &offset) const = 0;
-	virtual void copyValue(const ReadSection &rs, uint32 &readOffset, WriteSection &ws,
-		uint32 &writeOffset) const = 0;
-	virtual bool evaluate(const DbValue *value, const ReadSection &rs, CSSM_DB_OPERATOR op) const = 0;
-	virtual bool evaluate(const DbValue *value1, const DbValue *value2, CSSM_DB_OPERATOR op) const = 0;
-	virtual uint32 parse(const CssmData &inData, CSSM_DATA_PTR &outValues) const = 0;
-
-protected:
-	MetaAttribute(Format format, uint32 attributeIndex, uint32 attributeId)
-	: mFormat(format), mAttributeIndex(attributeIndex), mAttributeId(attributeId) {}
-
-	void packNumberOfValues(WriteSection &ws, uint32 numValues, uint32 &valueOffset) const;
-	void unpackNumberOfValues(const ReadSection &rs, uint32 &numValues, uint32 &valueOffset) const;
-
-	Format mFormat;
-	uint32 mAttributeIndex;
-	uint32 mAttributeId;
-};
-
-// Template used to describe particular subclasses of MetaAttribute
-
-template <class T>
-class TypedMetaAttribute : public MetaAttribute
-{
-public:
-	TypedMetaAttribute(Format format, uint32 attributeIndex, uint32 attributeId)
-	: MetaAttribute(format, attributeIndex, attributeId) {}
-
-	DbValue *createValue(const CSSM_DATA &data) const
-	{
-		return new T(data);
-	}
-
-	DbValue *createValue(const ReadSection &rs, uint32 &offset) const
-	{
-		return new T(rs, offset);
-	}
-
-	void packValue(WriteSection &ws, uint32 &offset, const CSSM_DATA &data) const
-	{
-		T value(data);
-		value.pack(ws, offset);
-	}
-
-	void unpackValue(const ReadSection &rs, uint32 &offset, CSSM_DATA &data, Allocator &allocator) const
-	{
-		T value(rs, offset);
-		data.Length = value.size();
-
-		if (data.Length != 0)
-		{
-			data.Data = reinterpret_cast<uint8 *>(allocator.malloc(data.Length));
-			memcpy(data.Data, value.bytes(), data.Length);
-		}
-		else
-		{
-			data.Data = NULL;
-		}
-	}
-
-	void skipValue(const ReadSection &rs, uint32 &offset) const
-	{
-		T value(rs, offset);
-	}
-	
-	void copyValue(const ReadSection &rs, uint32 &readOffset, WriteSection &ws, uint32 &writeOffset) const
-	{
-		T value(rs, readOffset);
-		value.pack(ws, writeOffset);
-	}
-
-	bool evaluate(const DbValue *value, const ReadSection &rs, CSSM_DB_OPERATOR op) const
-	{
-		uint32 offset, numValues;
-		unpackNumberOfValues(rs, numValues, offset);
-
-		/* If any of the values for this attribute match we have a
-		   match.   This is the same behaviour that indexes have. */
-		for (uint32 ix = 0; ix < numValues; ++ix)
-			if (dynamic_cast<const T *>(value)->evaluate(T(rs, offset), op))
-				return true;
-
-		return false;
-	}
-
-	bool evaluate(const DbValue *value1, const DbValue *value2, CSSM_DB_OPERATOR op) const
-	{
-		return (dynamic_cast<const T *>(value1))->evaluate(*dynamic_cast<const T *>(value2), op);
-	}
-		
-    uint32 parse(const CssmData &inData, CSSM_DATA_PTR &outValues) const
-	{
-		return 0;
-	}
-};
-
-} // end namespace Security
-
-#endif //  _H_APPLEDL_METAATTRIBUTE