libsecurity_codesigning/lib/renum.cpp

   1 /*
   2  * Copyright (c) 2006 Apple Computer, 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 // renum - enumerator for code (usually bundle) resources
  26 //
  27 #include "renum.h"
  28 #include <security_utilities/unix++.h>
  29 #include <security_utilities/debugging.h>
  30
  31 namespace Security {
  32 namespace CodeSigning {
  33
  34 using namespace UnixPlusPlus;
  35
  36
  37 ResourceEnumerator::ResourceEnumerator(string path)
  38         : mPath(path)
  39 {
  40         assert(!mPath.empty());
  41         const char * paths[2] = { path.c_str(), NULL };
  42         mFTS = fts_open((char * const *)paths, FTS_PHYSICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL);
  43         if (!mFTS)
  44                 UnixError::throwMe();
  45 }
  46
  47 ResourceEnumerator::~ResourceEnumerator()
  48 {
  49         checkError(fts_close(mFTS));
  50 }
  51
  52
  53 FTSENT *ResourceEnumerator::next(string &path)
  54 {
  55         while (FTSENT *ent = fts_read(mFTS)) {
  56                 switch (ent->fts_info) {
  57                 case FTS_F:
  58                         path = ent->fts_path + mPath.size() + 1;        // skip prefix + "/"
  59                         return ent;
  60                 case FTS_D:
  61                         secdebug("rdirenum", "entering %s", ent->fts_path);
  62                         break;
  63                 case FTS_DP:
  64                         secdebug("rdirenum", "leaving %s", ent->fts_path);
  65                         break;
  66                 case FTS_SL:
  67                         secdebug("rdirenum", "symlink ignored: %s", ent->fts_path);
  68                         break;
  69                 default:
  70                         secdebug("rdirenum", "type %d (errno %d): %s",
  71                                 ent->fts_info, ent->fts_errno, ent->fts_path);
  72                         break;
  73                 }
  74         }
  75         return NULL;
  76 }
  77
  78
  79 } // end namespace CodeSigning
  80 } // end namespace Security