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- // 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/memory/raw_ptr.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);
- HostExtensionSessionManager(const HostExtensionSessionManager&) = delete;
- HostExtensionSessionManager& operator=(const HostExtensionSessionManager&) =
- delete;
- 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.
- raw_ptr<ClientSessionDetails> client_session_details_;
- raw_ptr<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_;
- };
- } // namespace remoting
- #endif // REMOTING_HOST_HOST_EXTENSION_SESSION_MANAGER_H_
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