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// Copyright 2017 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 "base/files/file_path.h"
#include "base/metrics/field_trial.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/win/scoped_handle.h"
#include "base/win/win_util.h"
#include "content/browser/child_process_launcher.h"
#include "content/browser/child_process_launcher_helper.h"
#include "content/public/browser/child_process_launcher_utils.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/sandbox_init.h"
#include "content/public/common/sandboxed_process_launcher_delegate.h"
#include "mojo/edk/embedder/named_platform_channel_pair.h"
#include "mojo/edk/embedder/platform_channel_pair.h"
#include "mojo/edk/embedder/scoped_platform_handle.h"
#include "sandbox/win/src/sandbox_types.h"
#include "services/service_manager/embedder/result_codes.h"
#include "services/service_manager/sandbox/win/sandbox_win.h"
namespace content {
namespace internal {
void ChildProcessLauncherHelper::BeforeLaunchOnClientThread() {
DCHECK_CURRENTLY_ON(client_thread_id_);
}
mojo::edk::ScopedInternalPlatformHandle
ChildProcessLauncherHelper::PrepareMojoPipeHandlesOnClientThread() {
DCHECK_CURRENTLY_ON(client_thread_id_);
if (!delegate_->ShouldLaunchElevated())
return mojo::edk::ScopedInternalPlatformHandle();
mojo::edk::NamedPlatformChannelPair named_pair;
named_pair.PrepareToPassClientHandleToChildProcess(command_line());
return named_pair.PassServerHandle();
}
std::unique_ptr<FileMappedForLaunch>
ChildProcessLauncherHelper::GetFilesToMap() {
return std::unique_ptr<FileMappedForLaunch>();
}
bool ChildProcessLauncherHelper::BeforeLaunchOnLauncherThread(
const FileMappedForLaunch& files_to_register,
base::LaunchOptions* options) {
DCHECK(CurrentlyOnProcessLauncherTaskRunner());
return true;
}
ChildProcessLauncherHelper::Process
ChildProcessLauncherHelper::LaunchProcessOnLauncherThread(
const base::LaunchOptions& options,
std::unique_ptr<FileMappedForLaunch> files_to_register,
bool* is_synchronous_launch,
int* launch_result) {
DCHECK(CurrentlyOnProcessLauncherTaskRunner());
*is_synchronous_launch = true;
if (delegate_->ShouldLaunchElevated()) {
// When establishing a Mojo connection, the pipe path has already been added
// to the command line.
base::LaunchOptions win_options;
win_options.start_hidden = true;
ChildProcessLauncherHelper::Process process;
process.process = base::LaunchElevatedProcess(*command_line(), win_options);
return process;
}
base::HandlesToInheritVector handles;
handles.push_back(mojo_client_handle().handle);
base::FieldTrialList::AppendFieldTrialHandleIfNeeded(&handles);
command_line()->AppendSwitchASCII(
mojo::edk::PlatformChannelPair::kMojoPlatformChannelHandleSwitch,
base::UintToString(base::win::HandleToUint32(handles[0])));
ChildProcessLauncherHelper::Process process;
*launch_result = StartSandboxedProcess(
delegate_.get(),
command_line(),
handles,
&process.process);
return process;
}
void ChildProcessLauncherHelper::AfterLaunchOnLauncherThread(
const ChildProcessLauncherHelper::Process& process,
const base::LaunchOptions& options) {
DCHECK(CurrentlyOnProcessLauncherTaskRunner());
}
ChildProcessTerminationInfo ChildProcessLauncherHelper::GetTerminationInfo(
const ChildProcessLauncherHelper::Process& process,
bool known_dead) {
ChildProcessTerminationInfo info;
info.status =
base::GetTerminationStatus(process.process.Handle(), &info.exit_code);
return info;
}
// static
bool ChildProcessLauncherHelper::TerminateProcess(const base::Process& process,
int exit_code) {
return process.Terminate(exit_code, false);
}
void ChildProcessLauncherHelper::ForceNormalProcessTerminationSync(
ChildProcessLauncherHelper::Process process) {
DCHECK(CurrentlyOnProcessLauncherTaskRunner());
// Client has gone away, so just kill the process. Using exit code 0 means
// that UMA won't treat this as a crash.
process.process.Terminate(service_manager::RESULT_CODE_NORMAL_EXIT, false);
}
void ChildProcessLauncherHelper::SetProcessPriorityOnLauncherThread(
base::Process process,
const ChildProcessLauncherPriority& priority) {
DCHECK(CurrentlyOnProcessLauncherTaskRunner());
if (process.CanBackgroundProcesses())
process.SetProcessBackgrounded(priority.background);
}
// static
void ChildProcessLauncherHelper::SetRegisteredFilesForService(
const std::string& service_name,
catalog::RequiredFileMap required_files) {
// No file passing from the manifest on Windows yet.
DCHECK(required_files.empty());
}
// static
void ChildProcessLauncherHelper::ResetRegisteredFilesForTesting() {}
} // namespace internal
} // namespace content
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