libsecurity_codesigning/lib/cs.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, 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 // cs.h - code signing core header
  26 //
  27 #ifndef _H_CS
  28 #define _H_CS
  29
  30 #include "cserror.h"
  31 #include "codesigning_dtrace.h"
  32 #include <Security/CSCommonPriv.h>
  33 #include <Security/SecCodePriv.h>
  34 #include <Security/SecStaticCodePriv.h>
  35 #include <Security/SecRequirementPriv.h>
  36 #include <Security/SecCodeSigner.h>
  37 #include <Security/SecBasePriv.h>
  38 #include <security_utilities/globalizer.h>
  39 #include <security_utilities/seccfobject.h>
  40 #include <security_utilities/cfclass.h>
  41 #include <security_utilities/errors.h>
  42 #include <security_utilities/sqlite++.h>
  43 #include <security_utilities/cfutilities.h>
  44
  45
  46 namespace Security {
  47 namespace CodeSigning {
  48
  49
  50 //
  51 // API per-thread globals
  52 //
  53 struct PerThread {
  54         SecCSFlags flags;                               // flags of pending API call
  55 };
  56
  57
  58 //
  59 // API globals
  60 //
  61 struct CFObjects {
  62         CFObjects();
  63         CFClass Code;
  64         CFClass StaticCode;
  65         CFClass Requirement;
  66         CFClass CodeSigner;
  67
  68         ThreadNexus<PerThread> perThread;
  69
  70         SecCSFlags &flags() { return perThread().flags; }
  71 };
  72
  73 extern ModuleNexus<CFObjects> gCFObjects;
  74
  75 static inline SecCSFlags apiFlags() { return gCFObjects().flags(); }
  76
  77 OSStatus dbError(const SQLite3::Error &err);
  78
  79
  80 //
  81 // Code Signing API brackets
  82 //
  83 #define BEGIN_CSAPI \
  84     try {
  85
  86 #define END_CSAPI \
  87     } \
  88         catch (const UnixError &err) { \
  89                 switch (err.error) { \
  90                 case ENOEXEC: return errSecCSBadObjectFormat; \
  91                 default: return err.osStatus(); \
  92                 }} \
  93     catch (const MacOSError &err) { return err.osStatus(); } \
  94     catch (const SQLite3::Error &err) { return dbError(err); } \
  95     catch (const CommonError &err) { return SecKeychainErrFromOSStatus(err.osStatus()); } \
  96     catch (const std::bad_alloc &) { return errSecAllocate; } \
  97     catch (...) { return errSecCSInternalError; } \
  98         return errSecSuccess;
  99
 100 #define END_CSAPI_ERRORS \
 101         } \
 102         catch (const CSError &err) { return err.cfError(errors); } \
 103         catch (const UnixError &err) { \
 104                 switch (err.error) { \
 105                 case ENOEXEC: return CSError::cfError(errors, errSecCSBadObjectFormat); \
 106                 default: return CSError::cfError(errors, err.osStatus()); \
 107                 }} \
 108     catch (const MacOSError &err) { return CSError::cfError(errors, err.osStatus()); } \
 109     catch (const SQLite3::Error &err) { return CSError::cfError(errors, dbError(err)); } \
 110     catch (const CommonError &err) { return CSError::cfError(errors, SecKeychainErrFromOSStatus(err.osStatus())); } \
 111     catch (const std::bad_alloc &) { return CSError::cfError(errors, errSecAllocate); } \
 112     catch (...) { return CSError::cfError(errors, errSecCSInternalError); } \
 113         return errSecSuccess;
 114
 115 #define END_CSAPI1(bad)    } catch (...) { return bad; }
 116
 117
 118 #define END_CSAPI_ERRORS1(bad) \
 119         } \
 120         catch (const CSError &err) { err.cfError(errors); } \
 121         catch (const UnixError &err) { \
 122                 switch (err.error) { \
 123                 case ENOEXEC: CSError::cfError(errors, errSecCSBadObjectFormat); \
 124                 default: CSError::cfError(errors, err.osStatus()); \
 125                 }} \
 126     catch (const MacOSError &err) { CSError::cfError(errors, err.osStatus()); } \
 127     catch (const SQLite3::Error &err) { CSError::cfError(errors, dbError(err)); } \
 128     catch (const CommonError &err) { CSError::cfError(errors, SecKeychainErrFromOSStatus(err.osStatus())); } \
 129     catch (const std::bad_alloc &) { CSError::cfError(errors, errSecAllocate); } \
 130     catch (...) { CSError::cfError(errors, errSecCSInternalError); } \
 131         return bad;
 132
 133
 134 //
 135 // A version of CodeSigning::Required
 136 //
 137 template <class T>
 138 static inline T &Required(T *ptr)
 139 {
 140         if (ptr == NULL)
 141                 MacOSError::throwMe(errSecCSObjectRequired);
 142         return *ptr;
 143 }
 144
 145 static inline void Required(const void *ptr)
 146 {
 147         if (ptr == NULL)
 148                 MacOSError::throwMe(errSecCSObjectRequired);
 149 }
 150
 151
 152 //
 153 // Check flags against a validity mask
 154 //
 155 static inline void checkFlags(SecCSFlags flags, SecCSFlags acceptable = 0)
 156 {
 157         if (flags & ~acceptable)
 158                 MacOSError::throwMe(errSecCSInvalidFlags);
 159         gCFObjects().flags() = flags;
 160 }
 161
 162
 163 //
 164 // DTrace USDT function bracket.
 165 // Use like this:
 166 //      DTRACK(PROVIDER_PROBE_PREFIX, arguments-after-this);
 167 // which will call
 168 //      PROVIDER_PROBE_PREFIX_START(this, arguments-after-this)
 169 // and
 170 //      PROVIDER_PROBE_PREFIX_END(this)
 171 //
 172 #define DTRACK(_prefix, _obj, _args...) \
 173         if (_prefix ## _START_ENABLED()) _prefix ## _START((_obj), ## _args); \
 174         struct _DTFrame ## _prefix { void *me; \
 175                 _DTFrame ## _prefix(void *m) : me(m) { } \
 176                 ~_DTFrame ## _prefix() { _prefix ## _END(me); } \
 177         } _dtframe##_prefix((_obj));
 178
 179
 180 }       // CodeSigning
 181 }       // Security
 182
 183 #endif //_H_CS