libsecurity_cdsa_client/lib/multidldb.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 // multidldb interfaces for searching multiple dls or db with a single cursor.
  21 //
  22 #ifndef _H_CDSA_CLIENT_MULTIDLDB
  23 #define _H_CDSA_CLIENT_MULTIDLDB  1
  24
  25 #include <security_cdsa_client/dlclient.h>
  26 #include <security_cdsa_client/DLDBList.h>
  27
  28 namespace Security
  29 {
  30
  31 namespace CssmClient
  32 {
  33
  34 //
  35 // The MultiDLDb class.
  36 //
  37 class MultiDLDbImpl : public ObjectImpl, public DbCursorMaker
  38 {
  39 public:
  40         struct List : public vector<DLDbIdentifier>, public RefCount
  41         {
  42                 List(const vector<DLDbIdentifier> &list) : vector<DLDbIdentifier>(list) {}
  43         };
  44
  45         struct ListRef : public RefPointer<List>
  46         {
  47                 ListRef() {}
  48                 ListRef(const vector<DLDbIdentifier> &list) : RefPointer<List>(new List(list)) {}
  49         };
  50
  51         MultiDLDbImpl(const vector<DLDbIdentifier> &list, bool useSecureStorage, const Cssm &cssm);
  52         MultiDLDbImpl(const vector<DLDbIdentifier> &list, bool useSecureStorage);
  53         virtual ~MultiDLDbImpl();
  54
  55         Cssm cssm() const { return parent<Cssm>(); }
  56         Db database(const DLDbIdentifier &dlDbIdentifier);
  57         ListRef listRef() { return mListRef; }
  58         void list(const vector<DLDbIdentifier> &list);
  59     const vector<DLDbIdentifier> &list() { return *mListRef; }
  60
  61         // DbCursorMaker
  62         virtual DbCursorImpl *newDbCursor(const CSSM_QUERY &query, Allocator &allocator);
  63         virtual DbCursorImpl *newDbCursor(uint32 capacity, Allocator &allocator);
  64
  65 protected:
  66         void activate();
  67         void deactivate();
  68
  69 private:
  70         typedef map<DLDbIdentifier, Db> DbMap;
  71
  72         // Lock protecting this object during changes.
  73         Mutex mLock;
  74         ListRef mListRef;
  75         DbMap mDbMap;
  76         bool mUseSecureStorage;
  77 };
  78
  79 class MultiDLDb : public Object
  80 {
  81 public:
  82         typedef MultiDLDbImpl Impl;
  83
  84         explicit MultiDLDb(Impl *impl) : Object(impl) {}
  85         MultiDLDb(const vector<DLDbIdentifier> &list, bool useSecureStorage, const Cssm &cssm)
  86         : Object(new Impl(list, useSecureStorage, cssm)) {}
  87         MultiDLDb(const vector<DLDbIdentifier> &list, bool useSecureStorage)
  88         : Object(new Impl(list, useSecureStorage)) {}
  89
  90         Impl *operator ->() const { return &impl<Impl>(); }
  91         Impl &operator *() const { return impl<Impl>(); }
  92
  93         // Conversion to DbCursorMaker
  94         operator DbCursorMaker &() { return impl<Impl>(); }
  95 };
  96
  97 }; // end namespace CssmClient
  98
  99 } // end namespace Security
 100
 101 #endif // _H_CDSA_CLIENT_MULTIDLDB