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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/host/daemon_process.h"
#include "base/base_switches.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/time.h"
#include "base/timer.h"
#include "base/utf_string_conversions.h"
#include "base/win/scoped_handle.h"
#include "ipc/ipc_message.h"
#include "ipc/ipc_message_macros.h"
#include "remoting/base/auto_thread_task_runner.h"
#include "remoting/host/chromoting_messages.h"
#include "remoting/host/desktop_session_win.h"
#include "remoting/host/host_exit_codes.h"
#include "remoting/host/ipc_constants.h"
#include "remoting/host/win/host_service.h"
#include "remoting/host/win/launch_process_with_token.h"
#include "remoting/host/win/unprivileged_process_delegate.h"
#include "remoting/host/win/worker_process_launcher.h"
using base::win::ScopedHandle;
using base::TimeDelta;
namespace remoting {
class WtsConsoleMonitor;
class DaemonProcessWin : public DaemonProcess {
public:
DaemonProcessWin(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner,
const base::Closure& stopped_callback);
virtual ~DaemonProcessWin();
// WorkerProcessIpcDelegate implementation.
virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
// DaemonProcess overrides.
virtual void SendToNetwork(IPC::Message* message) OVERRIDE;
virtual bool OnDesktopSessionAgentAttached(
int terminal_id,
base::ProcessHandle desktop_process,
IPC::PlatformFileForTransit desktop_pipe) OVERRIDE;
protected:
// Stoppable implementation.
virtual void DoStop() OVERRIDE;
// DaemonProcess implementation.
virtual scoped_ptr<DesktopSession> DoCreateDesktopSession(
int terminal_id) OVERRIDE;
virtual void LaunchNetworkProcess() OVERRIDE;
private:
scoped_ptr<WorkerProcessLauncher> network_launcher_;
// Handle of the network process.
ScopedHandle network_process_;
DISALLOW_COPY_AND_ASSIGN(DaemonProcessWin);
};
DaemonProcessWin::DaemonProcessWin(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner,
const base::Closure& stopped_callback)
: DaemonProcess(caller_task_runner, io_task_runner, stopped_callback) {
}
DaemonProcessWin::~DaemonProcessWin() {
// Make sure that the object is completely stopped. The same check exists
// in Stoppable::~Stoppable() but this one helps us to fail early and
// predictably.
CHECK_EQ(stoppable_state(), Stoppable::kStopped);
}
void DaemonProcessWin::OnChannelConnected(int32 peer_pid) {
// Obtain the handle of the network process.
network_process_.Set(OpenProcess(PROCESS_DUP_HANDLE, false, peer_pid));
if (!network_process_.IsValid()) {
CrashNetworkProcess(FROM_HERE);
return;
}
DaemonProcess::OnChannelConnected(peer_pid);
}
void DaemonProcessWin::SendToNetwork(IPC::Message* message) {
if (network_launcher_) {
network_launcher_->Send(message);
} else {
delete message;
}
}
bool DaemonProcessWin::OnDesktopSessionAgentAttached(
int terminal_id,
base::ProcessHandle desktop_process,
IPC::PlatformFileForTransit desktop_pipe) {
// Prepare |desktop_process| handle for sending over to the network process.
// |desktop_pipe| is a handle in the desktop process. It will be duplicated
// by the network process directly from the desktop process.
IPC::PlatformFileForTransit desktop_process_for_transit =
IPC::GetFileHandleForProcess(desktop_process, network_process_, false);
if (desktop_process_for_transit == IPC::InvalidPlatformFileForTransit()) {
LOG(ERROR) << "Failed to duplicate the desktop process handle";
return false;
}
SendToNetwork(new ChromotingDaemonNetworkMsg_DesktopAttached(
terminal_id, desktop_process_for_transit, desktop_pipe));
return true;
}
void DaemonProcessWin::DoStop() {
DCHECK(caller_task_runner()->BelongsToCurrentThread());
network_launcher_.reset();
DaemonProcess::DoStop();
}
scoped_ptr<DesktopSession> DaemonProcessWin::DoCreateDesktopSession(
int terminal_id) {
DCHECK(caller_task_runner()->BelongsToCurrentThread());
return scoped_ptr<DesktopSession>(new DesktopSessionWin(
caller_task_runner(), io_task_runner(), this, terminal_id,
HostService::GetInstance()));
}
void DaemonProcessWin::LaunchNetworkProcess() {
DCHECK(caller_task_runner()->BelongsToCurrentThread());
DCHECK(!network_launcher_);
// Construct the host binary name.
base::FilePath host_binary;
if (!GetInstalledBinaryPath(kHostBinaryName, &host_binary)) {
Stop();
return;
}
scoped_ptr<UnprivilegedProcessDelegate> delegate(
new UnprivilegedProcessDelegate(caller_task_runner(), io_task_runner(),
host_binary));
network_launcher_.reset(new WorkerProcessLauncher(
caller_task_runner(), delegate.Pass(), this));
}
scoped_ptr<DaemonProcess> DaemonProcess::Create(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner,
const base::Closure& stopped_callback) {
scoped_ptr<DaemonProcessWin> daemon_process(
new DaemonProcessWin(caller_task_runner, io_task_runner,
stopped_callback));
daemon_process->Initialize();
return daemon_process.PassAs<DaemonProcess>();
}
} // namespace remoting
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