1  /*
 2   * Copyright (c) 2009,2011-2012 Apple Inc. All Rights Reserved.
 3   * 
 4   * @APPLE_LICENSE_HEADER_START@
 5   * 
 6   * This file contains Original Code and/or Modifications of Original Code
 7   * as defined in and that are subject to the Apple Public Source License
 8   * Version 2.0 (the 'License'). You may not use this file except in
 9   * compliance with the License. Please obtain a copy of the License at
10   * http://www.opensource.apple.com/apsl/ and read it before using this
11   * file.
12   * 
13   * The Original Code and all software distributed under the License are
14   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18   * Please see the License for the specific language governing rights and
19   * limitations under the License.
20   * 
21   * @APPLE_LICENSE_HEADER_END@
22   */
23  
24  //
25  // slcrep - DiskRep representing the Mac OS Shared Library Cache
26  //
27  #ifndef _H_SLCREP
28  #define _H_SLCREP
29  
30  #include "singlediskrep.h"
31  #include "sigblob.h"
32  #include <security_utilities/unix++.h>
33  #include <security_utilities/macho++.h>
34  #include <security_utilities/dyldcache.h>
35  
36  namespace Security {
37  namespace CodeSigning {
38  
39  
40  //
41  // DYLDCacheRep implements the on-disk format for the Mac OS X
42  // Shared Library Cache, which coalesces a set of system libraries
43  // and frameworks into one big (mappable) code blob in the sky.
44  //
45  class DYLDCacheRep : public SingleDiskRep {
46  public:
47  	DYLDCacheRep(const Context *ctx = NULL);
48  	DYLDCacheRep(const char *path);
49  	
50  	CFDataRef component(CodeDirectory::SpecialSlot slot);
51  	size_t pageSize(const SigningContext &ctx);
52  	size_t signingLimit();
53  	std::string format();
54  	
55  	static bool candidate(UnixPlusPlus::FileDesc &fd);
56  	
57  public:
58  	static CFDataRef identificationFor(MachO *macho);
59  	
60  public:
61  	DiskRep::Writer *writer();
62  	class Writer;
63  	friend class Writer;
64  
65  private:
66  	void setup();
67  
68  private:
69  	DYLDCache mCache;
70  	const EmbeddedSignatureBlob *mSigningData;	// pointer to signature SuperBlob (in mapped memory)
71  };
72  
73  
74  //
75  // The write side of a FileDiskRep
76  //
77  class DYLDCacheRep::Writer : public SingleDiskRep::Writer, private EmbeddedSignatureBlob::Maker {
78  	friend class FileDiskRep;
79  public:
80  	Writer(DYLDCacheRep *r) : SingleDiskRep::Writer(r, writerNoGlobal), rep(r), mSigningData(NULL) { }
81  	void component(CodeDirectory::SpecialSlot slot, CFDataRef data);
82  	void flush();
83  	void addDiscretionary(CodeDirectory::Builder &builder);
84  	
85  private:
86  	DYLDCacheRep *rep;
87  	EmbeddedSignatureBlob *mSigningData;
88  };
89  
90  
91  } // end namespace CodeSigning
92  } // end namespace Security
93  
94  #endif // !_H_SLCREP