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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 "content/browser/utility_process_host_impl.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/message_loop.h"
#include "base/utf_string_conversions.h"
#include "content/browser/browser_child_process_host_impl.h"
#include "content/common/child_process_host_impl.h"
#include "content/common/utility_messages.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/utility_process_host_client.h"
#include "content/public/common/content_switches.h"
#include "ipc/ipc_switches.h"
#include "ui/base/ui_base_switches.h"
#include "webkit/plugins/plugin_switches.h"
using content::BrowserThread;
using content::ChildProcessHost;
using content::UtilityProcessHostClient;
namespace content {
UtilityProcessHost* UtilityProcessHost::Create(
UtilityProcessHostClient* client,
BrowserThread::ID client_thread_id) {
return new UtilityProcessHostImpl(client, client_thread_id);
}
} // namespace content
UtilityProcessHostImpl::UtilityProcessHostImpl(
UtilityProcessHostClient* client,
BrowserThread::ID client_thread_id)
: client_(client),
client_thread_id_(client_thread_id),
is_batch_mode_(false),
no_sandbox_(false),
#if defined(OS_LINUX)
child_flags_(ChildProcessHost::CHILD_ALLOW_SELF),
#else
child_flags_(ChildProcessHost::CHILD_NORMAL),
#endif
use_linux_zygote_(false),
started_(false) {
process_.reset(
new BrowserChildProcessHostImpl(content::PROCESS_TYPE_UTILITY, this));
}
UtilityProcessHostImpl::~UtilityProcessHostImpl() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
DCHECK(!is_batch_mode_);
}
bool UtilityProcessHostImpl::Send(IPC::Message* message) {
if (!StartProcess())
return false;
return process_->Send(message);
}
bool UtilityProcessHostImpl::StartBatchMode() {
CHECK(!is_batch_mode_);
is_batch_mode_ = StartProcess();
Send(new UtilityMsg_BatchMode_Started());
return is_batch_mode_;
}
void UtilityProcessHostImpl::EndBatchMode() {
CHECK(is_batch_mode_);
is_batch_mode_ = false;
Send(new UtilityMsg_BatchMode_Finished());
}
void UtilityProcessHostImpl::SetExposedDir(const FilePath& dir) {
exposed_dir_ = dir;
}
void UtilityProcessHostImpl::DisableSandbox() {
no_sandbox_ = true;
}
void UtilityProcessHostImpl::EnableZygote() {
use_linux_zygote_ = true;
}
#if defined(OS_POSIX)
void UtilityProcessHostImpl::SetEnv(const base::EnvironmentVector& env) {
env_ = env;
}
#endif // OS_POSIX
bool UtilityProcessHostImpl::StartProcess() {
if (started_)
return true;
started_ = true;
if (is_batch_mode_)
return true;
// Name must be set or metrics_service will crash in any test which
// launches a UtilityProcessHost.
process_->SetName(ASCIIToUTF16("utility process"));
std::string channel_id = process_->GetHost()->CreateChannel();
if (channel_id.empty())
return false;
FilePath exe_path = ChildProcessHost::GetChildPath(child_flags_);
if (exe_path.empty()) {
NOTREACHED() << "Unable to get utility process binary name.";
return false;
}
CommandLine* cmd_line = new CommandLine(exe_path);
cmd_line->AppendSwitchASCII(switches::kProcessType,
switches::kUtilityProcess);
cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id);
std::string locale =
content::GetContentClient()->browser()->GetApplicationLocale();
cmd_line->AppendSwitchASCII(switches::kLang, locale);
const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
if (browser_command_line.HasSwitch(switches::kChromeFrame))
cmd_line->AppendSwitch(switches::kChromeFrame);
if (no_sandbox_ || browser_command_line.HasSwitch(switches::kNoSandbox))
cmd_line->AppendSwitch(switches::kNoSandbox);
if (browser_command_line.HasSwitch(switches::kDebugPluginLoading))
cmd_line->AppendSwitch(switches::kDebugPluginLoading);
#if defined(OS_POSIX)
// TODO(port): Sandbox this on Linux. Also, zygote this to work with
// Linux updating.
bool has_cmd_prefix = browser_command_line.HasSwitch(
switches::kUtilityCmdPrefix);
if (has_cmd_prefix) {
// launch the utility child process with some prefix (usually "xterm -e gdb
// --args").
cmd_line->PrependWrapper(browser_command_line.GetSwitchValueNative(
switches::kUtilityCmdPrefix));
}
cmd_line->AppendSwitchPath(switches::kUtilityProcessAllowedDir, exposed_dir_);
#endif
bool use_zygote = false;
#if defined(OS_LINUX)
use_zygote = !no_sandbox_ && use_linux_zygote_;
#endif
process_->Launch(
#if defined(OS_WIN)
exposed_dir_,
#elif defined(OS_POSIX)
use_zygote,
env_,
#endif
cmd_line);
return true;
}
bool UtilityProcessHostImpl::OnMessageReceived(const IPC::Message& message) {
BrowserThread::PostTask(
client_thread_id_, FROM_HERE,
base::Bind(base::IgnoreResult(
&UtilityProcessHostClient::OnMessageReceived), client_.get(),
message));
return true;
}
void UtilityProcessHostImpl::OnProcessCrashed(int exit_code) {
BrowserThread::PostTask(
client_thread_id_, FROM_HERE,
base::Bind(&UtilityProcessHostClient::OnProcessCrashed, client_.get(),
exit_code));
}
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