cdsa/cdsa_utilities/cssmcred.cpp

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // cssmcred - enhanced PodWrappers and construction aids for ACL credentials
  21 //
  22 #include <Security/cssmcred.h>
  23
  24
  25 namespace Security {
  26
  27
  28 //
  29 // The null credential constant.
  30 //
  31 static const CSSM_ACCESS_CREDENTIALS null_credentials = { "" }; // and more nulls
  32 #if BUG_GCC
  33 const AccessCredentials &AccessCredentials::null =
  34     *static_cast<const AccessCredentials *>(&null_credentials);
  35 #else
  36 const AccessCredentials &AccessCredentials::null =
  37     static_cast<const AccessCredentials &>(null_credentials);
  38 #endif
  39
  40
  41 //
  42 // Scan a SampleGroup for samples with a given CSSM_SAMPLE_TYPE.
  43 // Collect all matching samples into a list (which is cleared to begin with).
  44 // Return true if any were found, false if none.
  45 // Throw if any of the samples are obviously malformed.
  46 //
  47 bool SampleGroup::collect(CSSM_SAMPLE_TYPE sampleType, list<CssmSample> &matches) const
  48 {
  49         for (uint32 n = 0; n < length(); n++) {
  50                 TypedList sample = (*this)[n];
  51                 sample.checkProper();
  52                 if (sample.type() == sampleType) {
  53                         sample.snip();  // skip sample type
  54                         matches.push_back(sample);
  55                 }
  56         }
  57         return !matches.empty();
  58 }
  59
  60
  61
  62 //
  63 // AutoCredentials self-constructing credentials structure
  64 //
  65 AutoCredentials::AutoCredentials(CssmAllocator &alloc) : allocator(alloc)
  66 {
  67         init();
  68 }
  69
  70 AutoCredentials::AutoCredentials(CssmAllocator &alloc, uint32 nSamples) : allocator(alloc)
  71 {
  72         init();
  73 }
  74
  75 void AutoCredentials::init()
  76 {
  77         sampleArray = NULL;
  78         nSamples = 0;
  79 }
  80
  81
  82 CssmSample &AutoCredentials::getSample(uint32 n)
  83 {
  84         if (n >= nSamples) {
  85                 sampleArray = allocator.alloc<CssmSample>(sampleArray, nSamples = n + 1);
  86                 Samples.Samples = sampleArray;
  87                 Samples.NumberOfSamples = nSamples;
  88         }
  89         return sampleArray[n];
  90 }
  91
  92 }       // end namespace Security