/*
 * Copyright (c) 2004 Apple Computer, 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@
 */

#ifndef __DSX509RELATION__
#define __DSX509RELATION__

#include "PartialRelation.h"
#include "DirectoryServices.h"

/*
	These classes define the relationship between CDSA and Open Directory
*/

// relation column numbers
enum {kCertTypeID = 0, kCertEncodingID, kCertPrintName, kCertAlias, kCertSubject, kCertIssuer, kCertSerialNumber,
	  kCertSubjectKeyIdentifier, kCertPublicKeyHash};

const int kNumberOfX509Attributes = kCertPublicKeyHash - kCertTypeID + 1;

// the "tuple" we return
class DSX509Tuple : public Tuple
{
protected:
	int mNumberOfValues;							// number of attributes
	Value** mValues;								// the attributes themselves
	BlobValue *mData;								// the data for this tuple

public:
	DSX509Tuple (int numberOfValues);
	virtual ~DSX509Tuple ();

	void SetValue (int i, Value* v);				// set an attribute by column number
	
	Value* GetValue (int i);						// get an attribute
	
	int GetNumberOfValues ();						// number of attributes
	
	void GetData (CSSM_DATA &data);					// get the data
	void SetData (BlobValue *value);				// set the data
};



class DSX509Relation;

// a class representing a single open directory record, and the method to serialize it as a tuple
class DSX509Record : public DSRecord
{
protected:
	DSX509Relation *mRelation;

public:
	DSX509Record (DSX509Relation* relation) : mRelation (relation) {}
	int GetTuple (DSX509Tuple *tupleList[], int maxTuples);
};



// a class representing a unique identifier for a record (in the CDSA sense)
class DSX509UniqueIdentifier : public UniqueIdentifier
{
protected:
	DSX509Tuple *mTuple;

public:
	DSX509UniqueIdentifier (DSX509Tuple *t);
	virtual ~DSX509UniqueIdentifier ();
	virtual void Export (CSSM_DB_UNIQUE_RECORD &record);
	DSX509Tuple* GetTuple ();
};



const int kMaxTuples = 10;

// a class which converts between a CDSA query and an open directory lookup
class DSX509Query : public Query
{
protected:
	DirectoryService *mDirectoryService;								// the directory service instance from which we came
	DSNodeList* mNodeList;												// the node list from which we came
	unsigned long mCurrentNodeIndex;									// the index of the node we are currently searching
	DSContext *mDSContext;												// our current context
	unsigned long mRecordCount;											// the record we are currently searching
	unsigned long mCurrentItem;											// the item we are currently searching
	DSNode* mCurrentNode;												// the node we are currently searching
	tDirPatternMatch mPatternMatch;										// the search operator
	DSDataNode* mPatternToMatch;										// the search pattern
	DSRecordList *mRecordList;											// the records we are searching

	void ConnectToNextNode ();											// move to the next node in the list
	void SetupNextSearch ();											// start a new search on a node
	Tuple* MakeTupleFromRecord (DSRecord &record);						// convert a record to a tuple

	DSX509Tuple* mTupleList[kMaxTuples];								// store tuples returned from a query
	int mNumberOfTuples;												// number of tuples stored
	int mNextTuple;														// next tuple to be returned

public:
	DSX509Query (DSX509Relation* relation, const CSSM_QUERY *queryBase);
	virtual ~DSX509Query ();
	
	virtual Tuple* GetNextTuple (UniqueIdentifier *&id);				// get a tuple and return an ID that identifies it
};



class DSX509Relation : public PartialRelation
{
protected:
	CSSM_CL_HANDLE mCertificateLibrary;
	
	void InitializeCertLibrary ();										// load the CL

public:
	DSX509Relation ();
	virtual ~DSX509Relation ();

	Query* MakeQuery (const CSSM_QUERY* query);							// convert a CSSM_QUERY object to an internal form
	Tuple* GetTupleFromUniqueIdentifier (UniqueIdentifier* uniqueID);	// get tuple by unique ID
	UniqueIdentifier* ImportUniqueIdentifier (CSSM_DB_UNIQUE_RECORD *uniqueRecord);	// make a unique ID from an external form
	CSSM_CL_HANDLE GetCLHandle ();										// get the CL handle -- initialize if necessary
};



#endif