Security/libsecurity_codesigning/lib/slcrep.h

   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