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- // Copyright (c) 2012 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.
- #include "remoting/protocol/client_control_dispatcher.h"
- #include <stdint.h>
- #include "base/callback.h"
- #include "base/callback_helpers.h"
- #include "net/socket/stream_socket.h"
- #include "remoting/base/compound_buffer.h"
- #include "remoting/base/constants.h"
- #include "remoting/proto/control.pb.h"
- #include "remoting/proto/internal.pb.h"
- #include "remoting/protocol/client_stub.h"
- #include "remoting/protocol/message_pipe.h"
- #include "remoting/protocol/message_serialization.h"
- namespace remoting {
- namespace protocol {
- namespace {
- // 32-bit BGRA is 4 bytes per pixel.
- const int kBytesPerPixel = 4;
- bool CursorShapeIsValid(const CursorShapeInfo& cursor_shape) {
- if (!cursor_shape.has_data() ||
- !cursor_shape.has_width() ||
- !cursor_shape.has_height() ||
- !cursor_shape.has_hotspot_x() ||
- !cursor_shape.has_hotspot_y()) {
- LOG(ERROR) << "Cursor shape is missing required fields.";
- return false;
- }
- int width = cursor_shape.width();
- int height = cursor_shape.height();
- // Verify that |width| and |height| are within sane limits. Otherwise integer
- // overflow can occur while calculating |cursor_total_bytes| below.
- if (width < 0 || width > (SHRT_MAX / 2) ||
- height < 0 || height > (SHRT_MAX / 2)) {
- LOG(ERROR) << "Cursor dimensions are out of bounds for SetCursor: "
- << width << "x" << height;
- return false;
- }
- uint32_t cursor_total_bytes = width * height * kBytesPerPixel;
- if (cursor_shape.data().size() < cursor_total_bytes) {
- LOG(ERROR) << "Expected " << cursor_total_bytes << " bytes for a "
- << width << "x" << height << " cursor. Only received "
- << cursor_shape.data().size() << " bytes";
- return false;
- }
- return true;
- }
- } // namespace
- ClientControlDispatcher::ClientControlDispatcher()
- : ChannelDispatcherBase(kControlChannelName) {}
- ClientControlDispatcher::~ClientControlDispatcher() = default;
- void ClientControlDispatcher::InjectClipboardEvent(
- const ClipboardEvent& event) {
- ControlMessage message;
- message.mutable_clipboard_event()->CopyFrom(event);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::NotifyClientResolution(
- const ClientResolution& resolution) {
- ControlMessage message;
- message.mutable_client_resolution()->CopyFrom(resolution);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::ControlVideo(const VideoControl& video_control) {
- ControlMessage message;
- message.mutable_video_control()->CopyFrom(video_control);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::ControlAudio(const AudioControl& audio_control) {
- ControlMessage message;
- message.mutable_audio_control()->CopyFrom(audio_control);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::SetCapabilities(
- const Capabilities& capabilities) {
- ControlMessage message;
- message.mutable_capabilities()->CopyFrom(capabilities);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::RequestPairing(
- const PairingRequest& pairing_request) {
- ControlMessage message;
- message.mutable_pairing_request()->CopyFrom(pairing_request);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::DeliverClientMessage(
- const ExtensionMessage& message) {
- ControlMessage control_message;
- control_message.mutable_extension_message()->CopyFrom(message);
- message_pipe()->Send(&control_message, {});
- }
- void ClientControlDispatcher::SelectDesktopDisplay(
- const SelectDesktopDisplayRequest& select_display) {
- ControlMessage message;
- message.mutable_select_display()->CopyFrom(select_display);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::ControlPeerConnection(
- const protocol::PeerConnectionParameters& parameters) {
- ControlMessage message;
- message.mutable_peer_connection_parameters()->CopyFrom(parameters);
- message_pipe()->Send(&message, {});
- }
- void ClientControlDispatcher::OnIncomingMessage(
- std::unique_ptr<CompoundBuffer> buffer) {
- DCHECK(client_stub_);
- DCHECK(clipboard_stub_);
- std::unique_ptr<ControlMessage> message =
- ParseMessage<ControlMessage>(buffer.get());
- if (!message)
- return;
- if (message->has_clipboard_event()) {
- clipboard_stub_->InjectClipboardEvent(message->clipboard_event());
- } else if (message->has_capabilities()) {
- client_stub_->SetCapabilities(message->capabilities());
- } else if (message->has_cursor_shape()) {
- if (CursorShapeIsValid(message->cursor_shape()))
- client_stub_->SetCursorShape(message->cursor_shape());
- } else if (message->has_pairing_response()) {
- client_stub_->SetPairingResponse(message->pairing_response());
- } else if (message->has_extension_message()) {
- client_stub_->DeliverHostMessage(message->extension_message());
- } else if (message->has_video_layout()) {
- client_stub_->SetVideoLayout(message->video_layout());
- } else {
- LOG(WARNING) << "Unknown control message received.";
- }
- }
- } // namespace protocol
- } // namespace remoting
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