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// Copyright (c) 2011 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 is an application of a minimal host process in a Chromoting
// system. It serves the purpose of gluing different pieces together
// to make a functional host process for testing.
//
// It peforms the following functionality:
// 1. Connect to the GTalk network and register the machine as a host.
// 2. Accepts connection through libjingle.
// 3. Receive mouse / keyboard events through libjingle.
// 4. Sends screen capture through libjingle.
#include <iostream>
#include <string>
#include <stdlib.h>
#include "build/build_config.h"
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/environment.h"
#include "base/file_path.h"
#include "base/logging.h"
#include "base/mac/scoped_nsautorelease_pool.h"
#include "base/path_service.h"
#include "base/test/mock_chrome_application_mac.h"
#include "base/threading/thread.h"
#include "crypto/nss_util.h"
#include "media/base/media.h"
#include "remoting/base/tracer.h"
#include "remoting/host/capturer_fake.h"
#include "remoting/host/chromoting_host.h"
#include "remoting/host/chromoting_host_context.h"
#include "remoting/host/curtain.h"
#include "remoting/host/desktop_environment.h"
#include "remoting/host/event_executor.h"
#include "remoting/host/json_host_config.h"
#include "remoting/proto/video.pb.h"
#if defined(TOOLKIT_USES_GTK)
#include "ui/gfx/gtk_util.h"
#endif
using remoting::ChromotingHost;
using remoting::DesktopEnvironment;
using remoting::protocol::CandidateSessionConfig;
using remoting::protocol::ChannelConfig;
using std::string;
using std::wstring;
#if defined(OS_WIN)
const wchar_t kDefaultConfigPath[] = L".ChromotingConfig.json";
const wchar_t kHomeDrive[] = L"HOMEDRIVE";
const wchar_t kHomePath[] = L"HOMEPATH";
// TODO(sergeyu): Use environment utils from base/environment.h.
const wchar_t* GetEnvironmentVar(const wchar_t* x) { return _wgetenv(x); }
#else
const char kDefaultConfigPath[] = ".ChromotingConfig.json";
static char* GetEnvironmentVar(const char* x) { return getenv(x); }
#endif
void ShutdownTask(MessageLoop* message_loop) {
message_loop->PostTask(FROM_HERE, new MessageLoop::QuitTask());
}
const char kFakeSwitchName[] = "fake";
const char kConfigSwitchName[] = "config";
const char kVideoSwitchName[] = "video";
const char kVideoSwitchValueVerbatim[] = "verbatim";
const char kVideoSwitchValueZip[] = "zip";
const char kVideoSwitchValueVp8[] = "vp8";
const char kVideoSwitchValueVp8Rtp[] = "vp8rtp";
int main(int argc, char** argv) {
// Needed for the Mac, so we don't leak objects when threads are created.
base::mac::ScopedNSAutoreleasePool pool;
CommandLine::Init(argc, argv);
const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
base::AtExitManager exit_manager;
crypto::EnsureNSPRInit();
// Allocate a chromoting context and starts it.
#if defined(TOOLKIT_USES_GTK)
gfx::GtkInitFromCommandLine(*cmd_line);
#endif
MessageLoopForUI message_loop;
remoting::ChromotingHostContext context(&message_loop);
context.Start();
#if defined(OS_WIN)
wstring home_path = GetEnvironmentVar(kHomeDrive);
home_path += GetEnvironmentVar(kHomePath);
#else
string home_path = GetEnvironmentVar(base::env_vars::kHome);
#endif
FilePath config_path(home_path);
config_path = config_path.Append(kDefaultConfigPath);
if (cmd_line->HasSwitch(kConfigSwitchName)) {
config_path = cmd_line->GetSwitchValuePath(kConfigSwitchName);
}
base::Thread file_io_thread("FileIO");
file_io_thread.Start();
scoped_refptr<remoting::JsonHostConfig> config(
new remoting::JsonHostConfig(
config_path, file_io_thread.message_loop_proxy()));
if (!config->Read()) {
LOG(ERROR) << "Failed to read configuration file " << config_path.value();
context.Stop();
return 1;
}
FilePath module_path;
PathService::Get(base::DIR_MODULE, &module_path);
CHECK(media::InitializeMediaLibrary(module_path))
<< "Cannot load media library";
// Construct a chromoting host.
scoped_refptr<ChromotingHost> host;
bool fake = cmd_line->HasSwitch(kFakeSwitchName);
if (fake) {
remoting::Capturer* capturer =
new remoting::CapturerFake();
remoting::EventExecutor* event_executor =
remoting::EventExecutor::Create(context.ui_message_loop(), capturer);
remoting::Curtain* curtain = remoting::Curtain::Create();
host = ChromotingHost::Create(
&context, config,
new DesktopEnvironment(capturer, event_executor, curtain));
} else {
host = ChromotingHost::Create(&context, config);
}
if (cmd_line->HasSwitch(kVideoSwitchName)) {
string video_codec = cmd_line->GetSwitchValueASCII(kVideoSwitchName);
scoped_ptr<CandidateSessionConfig> config(
CandidateSessionConfig::CreateDefault());
config->mutable_video_configs()->clear();
ChannelConfig::TransportType transport = ChannelConfig::TRANSPORT_STREAM;
ChannelConfig::Codec codec;
if (video_codec == kVideoSwitchValueVerbatim) {
codec = ChannelConfig::CODEC_VERBATIM;
} else if (video_codec == kVideoSwitchValueZip) {
codec = ChannelConfig::CODEC_ZIP;
} else if (video_codec == kVideoSwitchValueVp8) {
codec = ChannelConfig::CODEC_VP8;
} else if (video_codec == kVideoSwitchValueVp8Rtp) {
transport = ChannelConfig::TRANSPORT_SRTP;
codec = ChannelConfig::CODEC_VP8;
} else {
LOG(ERROR) << "Unknown video codec: " << video_codec;
context.Stop();
return 1;
}
config->mutable_video_configs()->push_back(ChannelConfig(
transport, remoting::protocol::kDefaultStreamVersion, codec));
host->set_protocol_config(config.release());
}
#if defined(OS_MACOSX)
mock_cr_app::RegisterMockCrApp();
#endif // OS_MACOSX
// Let the chromoting host run until the shutdown task is executed.
host->Start(NewRunnableFunction(&ShutdownTask, &message_loop));
message_loop.MessageLoop::Run();
// And then stop the chromoting context.
context.Stop();
file_io_thread.Stop();
return 0;
}
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