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// Copyright 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 "content/browser/child_process_launcher.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/i18n/icu_util.h"
#include "base/logging.h"
#include "base/process/launch.h"
#include "build/build_config.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/sandboxed_process_launcher_delegate.h"
namespace content {
using internal::ChildProcessLauncherHelper;
ChildProcessLauncher::ChildProcessLauncher(
std::unique_ptr<SandboxedProcessLauncherDelegate> delegate,
std::unique_ptr<base::CommandLine> command_line,
int child_process_id,
Client* client,
std::unique_ptr<mojo::edk::PendingProcessConnection> pending_connection,
const mojo::edk::ProcessErrorCallback& process_error_callback,
bool terminate_on_shutdown)
: client_(client),
termination_status_(base::TERMINATION_STATUS_NORMAL_TERMINATION),
exit_code_(RESULT_CODE_NORMAL_EXIT),
starting_(true),
pending_connection_(std::move(pending_connection)),
process_error_callback_(process_error_callback),
#if defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \
defined(MEMORY_SANITIZER) || defined(THREAD_SANITIZER) || \
defined(UNDEFINED_SANITIZER)
terminate_child_on_shutdown_(false),
#else
terminate_child_on_shutdown_(terminate_on_shutdown),
#endif
weak_factory_(this) {
DCHECK(CalledOnValidThread());
CHECK(BrowserThread::GetCurrentThreadIdentifier(&client_thread_id_));
helper_ = new ChildProcessLauncherHelper(
child_process_id, client_thread_id_,
std::move(command_line), std::move(delegate),
weak_factory_.GetWeakPtr(), terminate_on_shutdown);
helper_->StartLaunchOnClientThread();
}
ChildProcessLauncher::~ChildProcessLauncher() {
DCHECK(CalledOnValidThread());
if (process_.process.IsValid() && terminate_child_on_shutdown_) {
// Client has gone away, so just kill the process.
ChildProcessLauncherHelper::ForceNormalProcessTerminationAsync(
std::move(process_));
}
}
void ChildProcessLauncher::SetProcessBackgrounded(bool background) {
DCHECK(CalledOnValidThread());
base::Process to_pass = process_.process.Duplicate();
BrowserThread::PostTask(
BrowserThread::PROCESS_LAUNCHER, FROM_HERE,
base::Bind(
&ChildProcessLauncherHelper::SetProcessBackgroundedOnLauncherThread,
base::Passed(&to_pass),
background));
}
void ChildProcessLauncher::Notify(
ChildProcessLauncherHelper::Process process,
mojo::edk::ScopedPlatformHandle server_handle,
int error_code) {
DCHECK(CalledOnValidThread());
starting_ = false;
process_ = std::move(process);
// Take ownership of the pending connection here so it's destroyed when
// we go out of scope regardless of the outcome below.
std::unique_ptr<mojo::edk::PendingProcessConnection> pending_connection =
std::move(pending_connection_);
if (process_.process.IsValid()) {
// Set up Mojo IPC to the new process.
DCHECK(pending_connection);
pending_connection->Connect(process_.process.Handle(),
std::move(server_handle),
process_error_callback_);
client_->OnProcessLaunched();
} else {
termination_status_ = base::TERMINATION_STATUS_LAUNCH_FAILED;
// NOTE: May delete |this|.
client_->OnProcessLaunchFailed(error_code);
}
}
bool ChildProcessLauncher::IsStarting() {
// TODO(crbug.com/469248): This fails in some tests.
// DCHECK(CalledOnValidThread());
return starting_;
}
const base::Process& ChildProcessLauncher::GetProcess() const {
// TODO(crbug.com/469248): This fails in some tests.
// DCHECK(CalledOnValidThread());
return process_.process;
}
base::TerminationStatus ChildProcessLauncher::GetChildTerminationStatus(
bool known_dead,
int* exit_code) {
DCHECK(CalledOnValidThread());
if (!process_.process.IsValid()) {
// Process is already gone, so return the cached termination status.
if (exit_code)
*exit_code = exit_code_;
return termination_status_;
}
termination_status_ = ChildProcessLauncherHelper::GetTerminationStatus(
process_, known_dead, &exit_code_);
if (exit_code)
*exit_code = exit_code_;
// POSIX: If the process crashed, then the kernel closed the socket for it and
// so the child has already died by the time we get here. Since
// GetTerminationStatus called waitpid with WNOHANG, it'll reap the process.
// However, if GetTerminationStatus didn't reap the child (because it was
// still running), we'll need to Terminate via ProcessWatcher. So we can't
// close the handle here.
if (termination_status_ != base::TERMINATION_STATUS_STILL_RUNNING)
process_.process.Close();
return termination_status_;
}
bool ChildProcessLauncher::Terminate(int exit_code, bool wait) {
return IsStarting() ? false
: ChildProcessLauncherHelper::TerminateProcess(
GetProcess(), exit_code, wait);
}
// static
bool ChildProcessLauncher::TerminateProcess(const base::Process& process,
int exit_code,
bool wait) {
return ChildProcessLauncherHelper::TerminateProcess(process, exit_code, wait);
}
// static
void ChildProcessLauncher::SetRegisteredFilesForService(
const std::string& service_name,
catalog::RequiredFileMap required_files) {
ChildProcessLauncherHelper::SetRegisteredFilesForService(
service_name, std::move(required_files));
}
ChildProcessLauncher::Client* ChildProcessLauncher::ReplaceClientForTest(
Client* client) {
Client* ret = client_;
client_ = client;
return ret;
}
} // namespace content
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