securityd/src/pcscmonitor.h

   1 /*
   2  * Copyright (c) 2004-2008,2014 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,
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  18  * Please see the License for the specific language governing rights and
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  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // pcscmonitor - use PCSC to monitor smartcard reader/card state for securityd
  27 //
  28 #ifndef _H_PCSCMONITOR
  29 #define _H_PCSCMONITOR
  30
  31 #include "server.h"
  32 #include "tokencache.h"
  33 #include "reader.h"
  34 #include "token.h"
  35 #include <security_utilities/pcsc++.h>
  36 #include <security_utilities/coderepository.h>
  37 #include <set>
  38
  39
  40 //
  41 // A PCSCMonitor uses PCSC to monitor the state of smartcard readers and
  42 // tokens (cards) in the system, and dispatches messages and events to the
  43 // various related players in securityd. There should be at most one of these
  44 // objects active within securityd.
  45 //
  46 class PCSCMonitor : private Listener, private MachServer::Timer {
  47 public:
  48         enum ServiceLevel {
  49                 forcedOff,                                      // no service under any circumstances
  50                 externalDaemon                          // use externally launched daemon if present (do not manage pcscd)
  51         };
  52
  53         PCSCMonitor(Server &server, const char* pathToCache, ServiceLevel level = externalDaemon);
  54
  55 protected:
  56         Server &server;
  57         TokenCache& tokenCache();
  58
  59 protected:
  60     // Listener
  61     void notifyMe(Notification *message);
  62
  63         // MachServer::Timer
  64         void action();
  65
  66     void clearReaders(Reader::Type type);
  67
  68 public: //@@@@
  69         void startSoftTokens();
  70         void loadSoftToken(Bundle *tokendBundle);
  71
  72 private:
  73         ServiceLevel mServiceLevel;     // level of service requested/determined
  74
  75         std::string mCachePath;         // path to cache directory
  76         TokenCache *mTokenCache;        // cache object (lazy)
  77
  78         typedef map<string, RefPointer<Reader> > ReaderMap;
  79         typedef set<RefPointer<Reader> > ReaderSet;
  80         ReaderMap mReaders;             // presently known PCSC Readers (aka slots)
  81
  82         class Watcher : public Thread {
  83         public:
  84                 Watcher(Server &server, TokenCache &tokenCache, ReaderMap& readers);
  85
  86         protected:
  87                 void action();
  88
  89         private:
  90                 Server &mServer;
  91                 TokenCache &mTokenCache;
  92                 PCSC::Session mSession;         // PCSC client session
  93                 ReaderMap& mReaders;
  94         };
  95 };
  96
  97
  98 #endif //_H_PCSCMONITOR