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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.
//
// This file implements a standalone host process for Me2Me, which is currently
// used for the Linux-only Virtual Me2Me build.
#include <string>
#include "base/at_exit.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/threading/thread.h"
#include "build/build_config.h"
#include "crypto/nss_util.h"
#include "net/base/network_change_notifier.h"
#include "remoting/base/constants.h"
#include "remoting/host/capturer.h"
#include "remoting/host/chromoting_host.h"
#include "remoting/host/chromoting_host_context.h"
#include "remoting/host/desktop_environment.h"
#include "remoting/host/event_executor.h"
#include "remoting/host/heartbeat_sender.h"
#include "remoting/host/host_config.h"
#include "remoting/host/host_event_logger.h"
#include "remoting/host/json_host_config.h"
#include "remoting/host/log_to_server.h"
#include "remoting/host/signaling_connector.h"
#include "remoting/jingle_glue/xmpp_signal_strategy.h"
#include "remoting/protocol/me2me_host_authenticator_factory.h"
#if defined(TOOLKIT_USES_GTK)
#include "ui/gfx/gtk_util.h"
#endif
namespace {
// This is used for tagging system event logs.
const char kApplicationName[] = "remoting_me2me_host";
// These are used for parsing the config-file locations from the command line,
// and for defining the default locations if the switches are not present.
const char kAuthConfigSwitchName[] = "auth-config";
const char kHostConfigSwitchName[] = "host-config";
const FilePath::CharType kDefaultConfigDir[] =
FILE_PATH_LITERAL(".config/chrome-remote-desktop");
const FilePath::CharType kDefaultAuthConfigFile[] =
FILE_PATH_LITERAL("auth.json");
const FilePath::CharType kDefaultHostConfigFile[] =
FILE_PATH_LITERAL("host.json");
const int kMinPortNumber = 12400;
const int kMaxPortNumber = 12409;
} // namespace
namespace remoting {
class HostProcess {
public:
HostProcess()
: message_loop_(MessageLoop::TYPE_UI),
file_io_thread_("FileIO"),
context_(message_loop_.message_loop_proxy()) {
context_.Start();
file_io_thread_.Start();
network_change_notifier_.reset(net::NetworkChangeNotifier::Create());
}
void InitWithCommandLine(const CommandLine* cmd_line) {
FilePath default_config_dir =
file_util::GetHomeDir().Append(kDefaultConfigDir);
if (cmd_line->HasSwitch(kAuthConfigSwitchName)) {
auth_config_path_ = cmd_line->GetSwitchValuePath(kAuthConfigSwitchName);
} else {
auth_config_path_ = default_config_dir.Append(kDefaultAuthConfigFile);
}
if (cmd_line->HasSwitch(kHostConfigSwitchName)) {
host_config_path_ = cmd_line->GetSwitchValuePath(kHostConfigSwitchName);
} else {
host_config_path_ = default_config_dir.Append(kDefaultHostConfigFile);
}
#if defined(OS_LINUX)
Capturer::EnableXDamage(true);
#endif
}
int Run() {
if (!LoadConfig(file_io_thread_.message_loop_proxy())) {
return 1;
}
context_.network_message_loop()->PostTask(FROM_HERE, base::Bind(
&HostProcess::StartHost, base::Unretained(this)));
message_loop_.Run();
return 0;
}
private:
// Read Host config from disk, returning true if successful.
bool LoadConfig(base::MessageLoopProxy* io_message_loop) {
scoped_refptr<remoting::JsonHostConfig> host_config =
new remoting::JsonHostConfig(host_config_path_, io_message_loop);
scoped_refptr<remoting::JsonHostConfig> auth_config =
new remoting::JsonHostConfig(auth_config_path_, io_message_loop);
std::string failed_path;
if (!host_config->Read()) {
failed_path = host_config_path_.value();
} else if (!auth_config->Read()) {
failed_path = auth_config_path_.value();
}
if (!failed_path.empty()) {
LOG(ERROR) << "Failed to read configuration file " << failed_path;
return false;
}
if (!host_config->GetString(kHostIdConfigPath, &host_id_)) {
LOG(ERROR) << "host_id is not defined in the config.";
return false;
}
if (!key_pair_.Load(host_config)) {
return false;
}
// Use an XMPP connection to the Talk network for session signalling.
if (!auth_config->GetString(kXmppLoginConfigPath, &xmpp_login_) ||
!auth_config->GetString(kXmppAuthTokenConfigPath, &xmpp_auth_token_)) {
LOG(ERROR) << "XMPP credentials are not defined in the config.";
return false;
}
if (!auth_config->GetString(remoting::kXmppAuthServiceConfigPath,
&xmpp_auth_service_)) {
// For the me2me host, we assume we use the ClientLogin token for
// chromiumsync because we do not have an HTTP stack with which we can
// easily request an OAuth2 access token even if we had a RefreshToken for
// the account.
xmpp_auth_service_ = remoting::kChromotingTokenDefaultServiceName;
}
return true;
}
void StartHost() {
DCHECK(context_.network_message_loop()->BelongsToCurrentThread());
signal_strategy_.reset(
new XmppSignalStrategy(context_.jingle_thread(), xmpp_login_,
xmpp_auth_token_, xmpp_auth_service_));
signaling_connector_.reset(new SignalingConnector(signal_strategy_.get()));
desktop_environment_.reset(DesktopEnvironment::Create(&context_));
protocol::NetworkSettings network_settings;
network_settings.allow_nat_traversal = false;
network_settings.min_port = kMinPortNumber;
network_settings.max_port = kMaxPortNumber;
host_ = new ChromotingHost(
&context_, signal_strategy_.get(), desktop_environment_.get(),
network_settings);
heartbeat_sender_.reset(
new HeartbeatSender(host_id_, signal_strategy_.get(), &key_pair_));
log_to_server_.reset(
new LogToServer(host_, ServerLogEntry::ME2ME, signal_strategy_.get()));
host_event_logger_.reset(new HostEventLogger(host_, kApplicationName));
host_->Start();
// Create authenticator factory.
//
// TODO(sergeyu): Currently empty PIN is used. This is a temporary
// hack pending us adding a way to set a PIN. crbug.com/105214 .
scoped_ptr<protocol::AuthenticatorFactory> factory(
new protocol::Me2MeHostAuthenticatorFactory(
xmpp_login_, key_pair_.GenerateCertificate(),
*key_pair_.private_key(), ""));
host_->SetAuthenticatorFactory(factory.Pass());
}
MessageLoop message_loop_;
base::Thread file_io_thread_;
remoting::ChromotingHostContext context_;
scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
FilePath auth_config_path_;
FilePath host_config_path_;
std::string host_id_;
HostKeyPair key_pair_;
std::string xmpp_login_;
std::string xmpp_auth_token_;
std::string xmpp_auth_service_;
scoped_ptr<SignalStrategy> signal_strategy_;
scoped_ptr<SignalingConnector> signaling_connector_;
scoped_ptr<DesktopEnvironment> desktop_environment_;
scoped_ptr<remoting::HeartbeatSender> heartbeat_sender_;
scoped_ptr<LogToServer> log_to_server_;
scoped_ptr<HostEventLogger> host_event_logger_;
scoped_refptr<ChromotingHost> host_;
};
} // namespace remoting
int main(int argc, char** argv) {
CommandLine::Init(argc, argv);
// This object instance is required by Chrome code (for example,
// LazyInstance, MessageLoop).
base::AtExitManager exit_manager;
const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
#if defined(TOOLKIT_USES_GTK)
// Required for any calls into GTK functions, such as the Disconnect and
// Continue windows, though these should not be used for the Me2Me case
// (crbug.com/104377).
gfx::GtkInitFromCommandLine(*cmd_line);
#endif // TOOLKIT_USES_GTK
remoting::HostProcess me2me_host;
me2me_host.InitWithCommandLine(cmd_line);
return me2me_host.Run();
}
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