| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef REMOTING_HOST_HOST_EXTENSION_SESSION_MANAGER_H_ |
| #define REMOTING_HOST_HOST_EXTENSION_SESSION_MANAGER_H_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| |
| namespace remoting { |
| |
| class ClientSessionDetails; |
| class HostExtension; |
| class HostExtensionSession; |
| |
| namespace protocol { |
| class ClientStub; |
| class ExtensionMessage; |
| } |
| |
| // Helper class used to create and manage a set of HostExtensionSession |
| // instances depending upon the set of registered HostExtensions, and the |
| // set of capabilities negotiated between client and host. |
| class HostExtensionSessionManager { |
| public: |
| using HostExtensions = std::vector<HostExtension*>; |
| |
| // Creates an extension manager for the specified |extensions|. |
| HostExtensionSessionManager(const HostExtensions& extensions, |
| ClientSessionDetails* client_session_details); |
| virtual ~HostExtensionSessionManager(); |
| |
| // Returns the union of all capabilities supported by registered extensions. |
| std::string GetCapabilities() const; |
| |
| // Handles completion of authentication and capabilities negotiation, creating |
| // the set of HostExtensionSessions to match the client's capabilities. |
| void OnNegotiatedCapabilities(protocol::ClientStub* client_stub, |
| const std::string& capabilities); |
| |
| // Passes |message| to each HostExtensionSession in turn until the message |
| // is handled, or none remain. Returns true if the message was handled. |
| // It is not valid for more than one extension to handle the same message. |
| bool OnExtensionMessage(const protocol::ExtensionMessage& message); |
| |
| private: |
| using HostExtensionSessions = |
| std::vector<std::unique_ptr<HostExtensionSession>>; |
| |
| // Passed to HostExtensionSessions to allow them to send messages, |
| // disconnect the session, etc. |
| ClientSessionDetails* client_session_details_; |
| protocol::ClientStub* client_stub_; |
| |
| // The HostExtensions to instantiate for the session, if it reaches the |
| // authenticated state. |
| HostExtensions extensions_; |
| |
| // The instantiated HostExtensionSessions, used to handle extension messages. |
| HostExtensionSessions extension_sessions_; |
| |
| DISALLOW_COPY_AND_ASSIGN(HostExtensionSessionManager); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_HOST_EXTENSION_SESSION_MANAGER_H_ |