libsecurity_keychain/lib/SecInternal.h

   1 /*
   2  * Copyright (c) 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     @header SecInternal
  26     SecInternal defines common internal constants macros and SPI functions.
  27 */
  28
  29 #ifndef _SECURITY_SECINTERNAL_H_
  30 #define _SECURITY_SECINTERNAL_H_
  31
  32 #include <assert.h>
  33
  34 #if defined(__cplusplus)
  35 extern "C" {
  36 #endif
  37
  38 #define CFReleaseSafe(CF) { CFTypeRef _cf = (CF); if (_cf) CFRelease(_cf); }
  39 #define CFReleaseNull(CF) { CFTypeRef _cf = (CF); \
  40         if (_cf) { (CF) = NULL; CFRelease(_cf); } }
  41
  42 #define DICT_DECLARE(MAXVALUES) \
  43         CFIndex numValues = 0, maxValues = (MAXVALUES); \
  44         const void *keys[maxValues]; \
  45         const void *values[maxValues];
  46
  47 #define DICT_ADDPAIR(KEY,VALUE) do { \
  48         if (numValues < maxValues) { \
  49                 keys[numValues] = (KEY); \
  50                 values[numValues] = (VALUE); \
  51                 numValues++; \
  52         } else \
  53                 assert(false); \
  54 } while(0)
  55
  56 #define DICT_CREATE(ALLOCATOR) CFDictionaryCreate((ALLOCATOR), keys, values, \
  57         numValues, NULL, &kCFTypeDictionaryValueCallBacks)
  58
  59 #if defined(__cplusplus)
  60 }
  61 #endif
  62
  63 #endif /* !_SECURITY_SECINTERNAL_H_ */