attachfactory.h   [plain text]

/*
 * 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.
 */


//
// attachfactory - industrial grade production of Attachment objects
//
#ifndef _H_ATTACHFACTORY
#define _H_ATTACHFACTORY

#include "cssmint.h"
#include "attachment.h"

#ifdef _CPP_ATTACHFACTORY
# pragma export on
#endif


//
// An AttachmentMaker can create an Attachment object for a particular service
// type when asked nicely.
// 
class AttachmentMaker {
public:
    AttachmentMaker(CSSM_SERVICE_TYPE type) : mType(type) { }
    virtual ~AttachmentMaker();

    virtual Attachment *make(Module *module,
                             const CSSM_VERSION &version,
                             uint32 subserviceId,
                             CSSM_SERVICE_TYPE subserviceType,
                             const CSSM_API_MEMORY_FUNCS &memoryOps,
                             CSSM_ATTACH_FLAGS attachFlags,
                             CSSM_KEY_HIERARCHY keyHierarchy,
                             CSSM_FUNC_NAME_ADDR *functionTable,
                             uint32 functionTableSize) = 0;

    CSSM_SERVICE_TYPE factoryType() const { return mType; }
    
private:
    CSSM_SERVICE_TYPE mType;
};


//
// An AttachmentFactory contains a registry of AttachmentMakers for different
// service types, and produces the needed one on request.
//
class AttachmentFactory {
public:
    AttachmentFactory();
    
    AttachmentMaker *attachmentMakerFor(CSSM_SERVICE_TYPE type) const;

private:
    typedef map<CSSM_SERVICE_TYPE, AttachmentMaker *> AttachFactories;
    AttachFactories factories;
};

#ifdef _CPP_ATTACHFACTORY
# pragma export off
#endif


#endif //_H_ATTACHFACTORY