OSX/libsecurity_asn1/lib/nssUtils.c

   1 /*
   2  * Copyright (c) 2003-2006,2008,2010-2012 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  * nssUtils.cpp
  24  */
  25
  26 #include "nssUtils.h"
  27 #include <string.h>
  28
  29 /*
  30  * Compare two SecAsn1Items (or two SecAsn1Oids), return true if identical.
  31  */
  32 int nssCompareSecAsn1Items(
  33         const SecAsn1Item *data1,
  34         const SecAsn1Item *data2)
  35 {
  36         if((data1 == NULL) || (data1->Data == NULL) ||
  37            (data2 == NULL) || (data2->Data == NULL) ||
  38            (data1->Length != data2->Length)) {
  39                 return 0;
  40         }
  41         if(data1->Length != data2->Length) {
  42                 return 0;
  43         }
  44         return memcmp(data1->Data, data2->Data, data1->Length) == 0;
  45 }
  46
  47 int nssCompareCssmData(
  48     const SecAsn1Item *data1,
  49     const SecAsn1Item *data2)
  50 {
  51     return nssCompareSecAsn1Items(data1,data2);
  52 }
  53
  54 /*
  55  * How many items in a NULL-terminated array of pointers?
  56  */
  57 unsigned nssArraySize(
  58         const void **array)
  59 {
  60     unsigned count = 0;
  61     if (array) {
  62                 while (*array++) {
  63                         count++;
  64                 }
  65     }
  66     return count;
  67 }
  68