cdsa/cssm/cssmmds.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // cssmmds - MDS interface for CSSM & friends
  21 //
  22 #ifndef _H_CSSMMDS
  23 #define _H_CSSMMDS
  24
  25 #include "cssmint.h"
  26 #include <Security/globalizer.h>
  27 #include <string>
  28 #include <stdio.h>      // @@@ for temporary MDS interface only
  29
  30 #ifdef _CPP_CSSMMDS
  31 # pragma export on
  32 #endif
  33
  34
  35 class MdsComponent {
  36 public:
  37     MdsComponent(const Guid &guid);
  38     virtual ~MdsComponent();
  39
  40     const Guid &myGuid() const { return mMyGuid; }
  41
  42     CSSM_SERVICE_MASK services() const { update(); return mServices; }
  43     bool supportsService(CSSM_SERVICE_TYPE t) const { update(); return t & mServices; }
  44     bool isThreadSafe() const { update(); return mIsThreadSafe; }
  45     const char *path() const { update(); return mPath.c_str(); }
  46
  47 private:
  48     const Guid mMyGuid;                                 // GUID of the component
  49
  50     // information obtained about the component
  51     mutable bool mIsValid;                              // information is valid
  52     mutable string mPath;                       // module location
  53     mutable CSSM_SERVICE_TYPE mServices; // service types provided
  54     mutable bool mIsThreadSafe;                 // is the module thread safe?
  55
  56     void getInfo() const;                               // retrieve MDS information
  57     void update() const { if (!mIsValid) getInfo(); }
  58
  59 private:
  60     struct MDS {
  61         MDS();
  62         ~MDS();
  63         FILE *config;
  64     };
  65     static ModuleNexus<MDS> mds;
  66 };
  67
  68 #ifdef _CPP_CSSMMDS
  69 # pragma export off
  70 #endif
  71
  72
  73 #endif //_H_CSSMMDS