1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef REMOTING_HOST_WIN_WTS_TERMINAL_MONITOR_H_ 6 #define REMOTING_HOST_WIN_WTS_TERMINAL_MONITOR_H_ 7 8 #include <stdint.h> 9 10 #include <string> 11 12 #include "base/macros.h" 13 #include "base/strings/utf_string_conversions.h" 14 15 namespace remoting { 16 17 class WtsTerminalObserver; 18 19 // Session id that does not represent any session. 20 extern const uint32_t kInvalidSessionId; 21 22 class WtsTerminalMonitor { 23 public: 24 // The console terminal ID. 25 static const char kConsole[]; 26 27 virtual ~WtsTerminalMonitor(); 28 29 // Registers an observer to receive notifications about a particular WTS 30 // terminal. |terminal_id| is used to specify an RdpClient instance for which 31 // the connected session should be monitored, or |kConsole| may be passed to 32 // monitor the console session. 33 // 34 // Each observer instance can monitor a single WTS console. Returns 35 // |true| of success. Returns |false| if |observer| is already registered. 36 virtual bool AddWtsTerminalObserver(const std::string& terminal_id, 37 WtsTerminalObserver* observer) = 0; 38 39 // Unregisters a previously registered observer. 40 virtual void RemoveWtsTerminalObserver(WtsTerminalObserver* observer) = 0; 41 42 // Returns ID of the terminal connected to |session_id| in |*terminal_id|. 43 // Returns false if |session_id| is not attached to the physical console or 44 // does not have an assigned terminal ID. 45 static bool LookupTerminalId(uint32_t session_id, std::string* terminal_id); 46 47 // Returns ID of the session that |terminal_id| is attached. 48 // |kInvalidSessionId| is returned if none of the sessions is currently 49 // attahced to |client_endpoint|. 50 static uint32_t LookupSessionId(const std::string& terminal_id); 51 52 protected: 53 WtsTerminalMonitor(); 54 55 private: 56 DISALLOW_COPY_AND_ASSIGN(WtsTerminalMonitor); 57 }; 58 59 } // namespace remoting 60 61 #endif // REMOTING_HOST_WIN_WTS_TERMINAL_MONITOR_H_ 62