mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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129 lines
4.0 KiB
C++
129 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "base/process_util.h"
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#include "mozilla/ipc/AsyncChannel.h"
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#include "mozilla/ipc/ProtocolUtils.h"
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#include "mozilla/ipc/Transport.h"
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using namespace base;
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using namespace IPC;
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namespace mozilla {
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namespace ipc {
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class ChannelOpened : public IPC::Message
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{
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public:
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ChannelOpened(TransportDescriptor aDescriptor,
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ProcessId aOtherProcess,
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ProtocolId aProtocol)
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: IPC::Message(MSG_ROUTING_CONTROL, // these only go to top-level actors
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CHANNEL_OPENED_MESSAGE_TYPE,
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PRIORITY_NORMAL)
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{
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IPC::WriteParam(this, aDescriptor);
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IPC::WriteParam(this, aOtherProcess);
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IPC::WriteParam(this, static_cast<uint32_t>(aProtocol));
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}
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static bool Read(const IPC::Message& aMsg,
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TransportDescriptor* aDescriptor,
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ProcessId* aOtherProcess,
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ProtocolId* aProtocol)
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{
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void* iter = nullptr;
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if (!IPC::ReadParam(&aMsg, &iter, aDescriptor) ||
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!IPC::ReadParam(&aMsg, &iter, aOtherProcess) ||
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!IPC::ReadParam(&aMsg, &iter, reinterpret_cast<uint32_t*>(aProtocol))) {
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return false;
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}
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aMsg.EndRead(iter);
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return true;
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}
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};
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bool
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Bridge(const PrivateIPDLInterface&,
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AsyncChannel* aParentChannel, ProcessHandle aParentProcess,
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AsyncChannel* aChildChannel, ProcessHandle aChildProcess,
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ProtocolId aProtocol)
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{
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ProcessId parentId = GetProcId(aParentProcess);
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ProcessId childId = GetProcId(aChildProcess);
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if (!parentId || !childId) {
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return false;
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}
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TransportDescriptor parentSide, childSide;
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if (!CreateTransport(aParentProcess, aChildProcess,
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&parentSide, &childSide)) {
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return false;
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}
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if (!aParentChannel->Send(new ChannelOpened(parentSide,
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childId,
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aProtocol)) ||
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!aChildChannel->Send(new ChannelOpened(childSide,
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parentId,
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aProtocol))) {
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CloseDescriptor(parentSide);
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CloseDescriptor(childSide);
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return false;
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}
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return true;
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}
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bool
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Open(const PrivateIPDLInterface&,
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AsyncChannel* aOpenerChannel, ProcessHandle aOtherProcess,
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Transport::Mode aOpenerMode,
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ProtocolId aProtocol)
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{
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bool isParent = (Transport::MODE_SERVER == aOpenerMode);
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ProcessHandle thisHandle = GetCurrentProcessHandle();
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ProcessHandle parentHandle = isParent ? thisHandle : aOtherProcess;
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ProcessHandle childHandle = !isParent ? thisHandle : aOtherProcess;
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ProcessId parentId = GetProcId(parentHandle);
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ProcessId childId = GetProcId(childHandle);
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if (!parentId || !childId) {
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return false;
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}
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TransportDescriptor parentSide, childSide;
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if (!CreateTransport(parentHandle, childHandle,
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&parentSide, &childSide)) {
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return false;
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}
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Message* parentMsg = new ChannelOpened(parentSide, childId, aProtocol);
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Message* childMsg = new ChannelOpened(childSide, parentId, aProtocol);
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nsAutoPtr<Message> messageForUs(isParent ? parentMsg : childMsg);
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nsAutoPtr<Message> messageForOtherSide(!isParent ? parentMsg : childMsg);
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if (!aOpenerChannel->Echo(messageForUs.forget()) ||
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!aOpenerChannel->Send(messageForOtherSide.forget())) {
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CloseDescriptor(parentSide);
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CloseDescriptor(childSide);
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return false;
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}
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return true;
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}
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bool
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UnpackChannelOpened(const PrivateIPDLInterface&,
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const Message& aMsg,
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TransportDescriptor* aTransport,
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ProcessId* aOtherProcess,
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ProtocolId* aProtocol)
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{
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return ChannelOpened::Read(aMsg, aTransport, aOtherProcess, aProtocol);
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}
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} // namespace ipc
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} // namespace mozilla
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