sec/Security/SecInternal.h

   1 /*
   2  * Copyright (c) 2007,2009-2010 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 #include <CoreFoundation/CFNumber.h>
  34 #include <CoreFoundation/CFString.h>
  35
  36 #if defined(__cplusplus)
  37 extern "C" {
  38 #endif
  39
  40 #define CFReleaseSafe(CF) { CFTypeRef _cf = (CF); if (_cf) CFRelease(_cf); }
  41 #define CFReleaseNull(CF) { CFTypeRef _cf = (CF); \
  42         if (_cf) { (CF) = NULL; CFRelease(_cf); } }
  43 #define CFRetainSafe(CF) { CFTypeRef _cf = (CF); if (_cf) CFRetain(_cf); }
  44
  45 #define DICT_DECLARE(MAXVALUES) \
  46         CFIndex numValues = 0, maxValues = (MAXVALUES); \
  47         const void *keys[maxValues]; \
  48         const void *values[maxValues];
  49
  50 #define DICT_ADDPAIR(KEY,VALUE) do { \
  51         if (numValues < maxValues) { \
  52                 keys[numValues] = (KEY); \
  53                 values[numValues] = (VALUE); \
  54                 numValues++; \
  55         } else \
  56                 assert(false); \
  57 } while(0)
  58
  59 #define DICT_CREATE(ALLOCATOR) CFDictionaryCreate((ALLOCATOR), keys, values, \
  60         numValues, NULL, &kCFTypeDictionaryValueCallBacks)
  61
  62 /* Non valid CFTimeInterval or CFAbsoluteTime. */
  63 #define NULL_TIME       0.0
  64
  65
  66 static inline CFIndex getIntValue(CFTypeRef cf) {
  67     if (cf) {
  68         if (CFGetTypeID(cf) == CFNumberGetTypeID()) {
  69             CFIndex value;
  70             CFNumberGetValue(cf, kCFNumberCFIndexType, &value);
  71             return value;
  72         } else if (CFGetTypeID(cf) == CFStringGetTypeID()) {
  73             return CFStringGetIntValue(cf);
  74         }
  75     }
  76     return -1;
  77 }
  78
  79
  80 #if defined(__cplusplus)
  81 }
  82 #endif
  83
  84 #endif /* !_SECURITY_SECINTERNAL_H_ */