lib/singlediskrep.cpp

   1 /*
   2  * Copyright (c) 2006-2007 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 // singlediskrep - semi-abstract diskrep for a single file of some kind
  26 //
  27 #include "singlediskrep.h"
  28
  29
  30 namespace Security {
  31 namespace CodeSigning {
  32
  33 using namespace UnixPlusPlus;
  34
  35
  36 //
  37 // Construct a SingleDiskRep
  38 //
  39 SingleDiskRep::SingleDiskRep(const char *path)
  40         : mPath(path)
  41 {
  42 }
  43
  44
  45 //
  46 // Both the canonical and main executable path of a SingleDiskRep is, well, its path.
  47 //
  48 CFURLRef SingleDiskRep::canonicalPath()
  49 {
  50         return makeCFURL(mPath);
  51 }
  52
  53 string SingleDiskRep::mainExecutablePath()
  54 {
  55         return mPath;
  56 }
  57
  58
  59 //
  60 // The recommended identifier of a SingleDiskRep is, absent any better clue,
  61 // the basename of its path.
  62 //
  63 string SingleDiskRep::recommendedIdentifier()
  64 {
  65         string::size_type p = mPath.rfind('/');
  66         if (p == string::npos)
  67                 return mPath;
  68         else
  69                 return mPath.substr(p+1);
  70 }
  71
  72
  73 //
  74 // The default signing limit is the size of the file.
  75 // This will do unless the signing data gets creatively stuck in there somewhere.
  76 //
  77 size_t SingleDiskRep::signingLimit()
  78 {
  79         return fd().fileSize();
  80 }
  81
  82
  83 //
  84 // A lazily opened read-only file descriptor for the path.
  85 //
  86 FileDesc &SingleDiskRep::fd()
  87 {
  88         if (!mFd)
  89                 mFd.open(mPath, O_RDONLY);
  90         return mFd;
  91 }
  92
  93
  94 //
  95 // Flush cached state
  96 //
  97 void SingleDiskRep::flush()
  98 {
  99         mFd.close();
 100 }
 101
 102
 103 //
 104 // Prototype Writers
 105 //
 106 FileDesc &SingleDiskRep::Writer::fd()
 107 {
 108         if (!mFd)
 109                 mFd.open(rep->path(), O_RDWR);
 110         return mFd;
 111 }
 112
 113
 114 } // end namespace CodeSigning
 115 } // end namespace Security