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// Copyright 2014 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 "chromecast/browser/devtools/remote_debugging_server.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/strings/stringprintf.h"
#include "chromecast/browser/cast_browser_process.h"
#include "chromecast/browser/devtools/cast_dev_tools_delegate.h"
#include "chromecast/common/cast_content_client.h"
#include "chromecast/common/pref_names.h"
#include "components/devtools_http_handler/devtools_http_handler.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/user_agent.h"
#include "net/base/net_errors.h"
#include "net/socket/tcp_server_socket.h"
#if defined(OS_ANDROID)
#include "content/public/browser/android/devtools_auth.h"
#include "net/socket/unix_domain_server_socket_posix.h"
#endif // defined(OS_ANDROID)
using devtools_http_handler::DevToolsHttpHandler;
namespace chromecast {
namespace shell {
namespace {
const char kFrontEndURL[] =
"https://chrome-devtools-frontend.appspot.com/serve_rev/%s/inspector.html";
const uint16 kDefaultRemoteDebuggingPort = 9222;
const int kBackLog = 10;
#if defined(OS_ANDROID)
class UnixDomainServerSocketFactory
: public DevToolsHttpHandler::ServerSocketFactory {
public:
explicit UnixDomainServerSocketFactory(const std::string& socket_name)
: socket_name_(socket_name) {}
private:
// devtools_http_handler::DevToolsHttpHandler::ServerSocketFactory.
scoped_ptr<net::ServerSocket> CreateForHttpServer() override {
scoped_ptr<net::ServerSocket> socket(
new net::UnixDomainServerSocket(
base::Bind(&content::CanUserConnectToDevTools),
true /* use_abstract_namespace */));
if (socket->ListenWithAddressAndPort(socket_name_, 0, kBackLog) != net::OK)
return scoped_ptr<net::ServerSocket>();
return socket;
}
std::string socket_name_;
DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocketFactory);
};
#else
class TCPServerSocketFactory
: public DevToolsHttpHandler::ServerSocketFactory {
public:
TCPServerSocketFactory(const std::string& address, uint16 port)
: address_(address), port_(port) {
}
private:
// devtools_http_handler::DevToolsHttpHandler::ServerSocketFactory.
scoped_ptr<net::ServerSocket> CreateForHttpServer() override {
scoped_ptr<net::ServerSocket> socket(
new net::TCPServerSocket(nullptr, net::NetLog::Source()));
if (socket->ListenWithAddressAndPort(address_, port_, kBackLog) != net::OK)
return scoped_ptr<net::ServerSocket>();
return socket;
}
std::string address_;
uint16 port_;
DISALLOW_COPY_AND_ASSIGN(TCPServerSocketFactory);
};
#endif
scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>
CreateSocketFactory(uint16 port) {
#if defined(OS_ANDROID)
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
std::string socket_name = "cast_shell_devtools_remote";
if (command_line->HasSwitch(switches::kRemoteDebuggingSocketName)) {
socket_name = command_line->GetSwitchValueASCII(
switches::kRemoteDebuggingSocketName);
}
return scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>(
new UnixDomainServerSocketFactory(socket_name));
#else
return scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>(
new TCPServerSocketFactory("0.0.0.0", port));
#endif
}
std::string GetFrontendUrl() {
return base::StringPrintf(kFrontEndURL, content::GetWebKitRevision().c_str());
}
} // namespace
RemoteDebuggingServer::RemoteDebuggingServer() : port_(0) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
pref_port_.Init(prefs::kRemoteDebuggingPort,
CastBrowserProcess::GetInstance()->pref_service(),
base::Bind(&RemoteDebuggingServer::OnPortChanged,
base::Unretained(this)));
// Starts new dev tools, clearing port number saved in config.
// Remote debugging in production must be triggered only by config server.
pref_port_.SetValue(ShouldStartImmediately() ?
kDefaultRemoteDebuggingPort : 0);
OnPortChanged();
}
RemoteDebuggingServer::~RemoteDebuggingServer() {
pref_port_.SetValue(0);
OnPortChanged();
}
void RemoteDebuggingServer::OnPortChanged() {
uint16 new_port = static_cast<uint16>(std::max(*pref_port_, 0));
VLOG(1) << "OnPortChanged called: old_port=" << port_
<< ", new_port=" << new_port;
if (new_port == port_) {
VLOG(1) << "Port has not been changed. Ignore silently.";
return;
}
if (devtools_http_handler_) {
LOG(INFO) << "Stop old devtools: port=" << port_;
devtools_http_handler_.reset();
}
port_ = new_port;
if (port_ > 0) {
manager_delegate_.reset(new CastDevToolsManagerDelegate());
devtools_http_handler_.reset(new DevToolsHttpHandler(
CreateSocketFactory(port_),
GetFrontendUrl(),
new CastDevToolsDelegate(),
manager_delegate_.get(),
base::FilePath(),
base::FilePath(),
std::string(),
GetUserAgent()));
LOG(INFO) << "Devtools started: port=" << port_;
}
}
} // namespace shell
} // namespace chromecast
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