OSX/libsecurity_cdsa_utilities/lib/cssmbridge.h

   1 /*
   2  * Copyright (c) 2000-2001,2003-2004,2006,2011,2014 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 //
  26 // CSSM-style C/C++ bridge facilities
  27 //
  28 #ifndef _H_CSSMBRIDGE
  29 #define _H_CSSMBRIDGE
  30
  31 #include <security_utilities/utilities.h>
  32 #include <security_cdsa_utilities/cssmerrors.h>
  33 #include <Security/cssm.h>
  34
  35 namespace Security {
  36
  37 //
  38 // API boilerplate macros. These provide a frame for C++ code that is impermeable to exceptions.
  39 // Usage:
  40 //      BEGIN_API
  41 //              ... your C++ code here ...
  42 //  END_API(base)       // returns CSSM_RETURN on exception; complete it to 'base' (DL, etc.) class;
  43 //                                      // returns CSSM_OK on fall-through
  44 //      END_API0                // completely ignores exceptions; falls through in all cases
  45 //      END_API1(bad)   // return (bad) on exception; fall through on success
  46 //
  47 #define BEGIN_API       try { \
  48         static dispatch_once_t countToken; \
  49         countLegacyAPI(&countToken, __FUNCTION__);
  50
  51 #define BEGIN_API_NO_METRICS    try {
  52
  53 #define END_API(base)   } \
  54 catch (const CommonError &err) { return CssmError::cssmError(err, CSSM_ ## base ## _BASE_ERROR); } \
  55 catch (const std::bad_alloc &) { return CssmError::cssmError(CSSM_ERRCODE_MEMORY_ERROR, CSSM_ ## base ## _BASE_ERROR); } \
  56 catch (...) { return CssmError::cssmError(CSSM_ERRCODE_INTERNAL_ERROR, CSSM_ ## base ## _BASE_ERROR); } \
  57     return CSSM_OK;
  58 #define END_API0                } catch (...) { return; }
  59 #define END_API1(bad)   } catch (...) { return bad; }
  60
  61
  62 } // end namespace Security
  63
  64
  65 #endif //_H_CSSMBRIDGE