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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_PROTOCOL_HOST_CONTROL_DISPATCHER_H_
#define REMOTING_PROTOCOL_HOST_CONTROL_DISPATCHER_H_
#include <cstddef>
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "remoting/protocol/channel_dispatcher_base.h"
#include "remoting/protocol/client_stub.h"
#include "remoting/protocol/clipboard_stub.h"
#include "remoting/protocol/cursor_shape_stub.h"
namespace remoting::protocol {
class HostStub;
class PairingResponse;
// HostControlDispatcher dispatches incoming messages on the control channel to
// HostStub or ClipboardStub, and also implements ClientStub and CursorShapeStub
// for outgoing messages.
class HostControlDispatcher : public ChannelDispatcherBase, public ClientStub {
public:
HostControlDispatcher();
HostControlDispatcher(const HostControlDispatcher&) = delete;
HostControlDispatcher& operator=(const HostControlDispatcher&) = delete;
~HostControlDispatcher() override;
// ClientStub implementation.
void SetCapabilities(const Capabilities& capabilities) override;
void SetPairingResponse(const PairingResponse& pairing_response) override;
void DeliverHostMessage(const ExtensionMessage& message) override;
void SetVideoLayout(const VideoLayout& layout) override;
void SetTransportInfo(const TransportInfo& transport_info) override;
void SetActiveDisplay(const ActiveDisplay& active_display) override;
// ClipboardStub implementation for sending clipboard data to client.
void InjectClipboardEvent(const ClipboardEvent& event) override;
// CursorShapeStub implementation for sending cursor shape to client.
void SetCursorShape(const CursorShapeInfo& cursor_shape) override;
// KeyboardLayoutStub implementation for sending keyboard layout to client.
void SetKeyboardLayout(const KeyboardLayout& layout) override;
// Sets the ClipboardStub that will be called for each incoming clipboard
// message. |clipboard_stub| must outlive this object.
void set_clipboard_stub(ClipboardStub* clipboard_stub) {
clipboard_stub_ = clipboard_stub;
}
// Sets the HostStub that will be called for each incoming control message.
// |host_stub| must outlive this object.
void set_host_stub(HostStub* host_stub) { host_stub_ = host_stub; }
// Sets the maximum size of outgoing messages, which defaults to 64KiB. This
// is used to ensure we don't try to send any clipboard messages that the
// client can't receive. Clipboard updates that are larger than the maximum
// message size will be dropped.
void set_max_message_size(std::size_t max_message_size) {
LOG(INFO) << "Setting maximum message size to " << max_message_size;
max_message_size_ = max_message_size;
}
private:
void OnIncomingMessage(std::unique_ptr<CompoundBuffer> buffer) override;
raw_ptr<ClipboardStub> clipboard_stub_ = nullptr;
raw_ptr<HostStub> host_stub_ = nullptr;
// 64 KiB is the default message size expected to be supported in absence of a
// higher value negotiated via SDP.
std::size_t max_message_size_ = 64 * 1024;
};
} // namespace remoting::protocol
#endif // REMOTING_PROTOCOL_HOST_CONTROL_DISPATCHER_H_
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