text: /*
   * Copyright (c) 2009,2011-2012 Apple 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@
   */
  
  //
  // slcrep - DiskRep representing the Mac OS Shared Library Cache
  //
  #ifndef _H_SLCREP
  #define _H_SLCREP
  
  #include "singlediskrep.h"
  #include "sigblob.h"
  #include <security_utilities/unix++.h>
  #include <security_utilities/macho++.h>
  #include <security_utilities/dyldcache.h>
  
  namespace Security {
  namespace CodeSigning {
  
  
  //
  // DYLDCacheRep implements the on-disk format for the Mac OS X
  // Shared Library Cache, which coalesces a set of system libraries
  // and frameworks into one big (mappable) code blob in the sky.
  //
  class DYLDCacheRep : public SingleDiskRep {
  public:
  	DYLDCacheRep(const Context *ctx = NULL);
  	DYLDCacheRep(const char *path);
  	
  	CFDataRef component(CodeDirectory::SpecialSlot slot);
  	size_t pageSize(const SigningContext &ctx);
  	size_t signingLimit();
  	std::string format();
  	
  	static bool candidate(UnixPlusPlus::FileDesc &fd);
  	
  public:
  	static CFDataRef identificationFor(MachO *macho);
  	
  public:
  	DiskRep::Writer *writer();
  	class Writer;
  	friend class Writer;
  
  private:
  	void setup();
  
  private:
  	DYLDCache mCache;
  	const EmbeddedSignatureBlob *mSigningData;	// pointer to signature SuperBlob (in mapped memory)
  };
  
  
  //
  // The write side of a FileDiskRep
  //
  class DYLDCacheRep::Writer : public SingleDiskRep::Writer, private EmbeddedSignatureBlob::Maker {
  	friend class FileDiskRep;
  public:
  	Writer(DYLDCacheRep *r) : SingleDiskRep::Writer(r, writerNoGlobal), rep(r), mSigningData(NULL) { }
  	void component(CodeDirectory::SpecialSlot slot, CFDataRef data);
  	void flush();
  	void addDiscretionary(CodeDirectory::Builder &builder);
  	
  private:
  	DYLDCacheRep *rep;
  	EmbeddedSignatureBlob *mSigningData;
  };
  
  
  } // end namespace CodeSigning
  } // end namespace Security
  
  #endif // !_H_SLCREP
  