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// Copyright 2016 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 "components/ui_devtools/devtools_server.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/format_macros.h"
#include "base/memory/ptr_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/values.h"
#include "components/ui_devtools/switches.h"
#include "net/base/net_errors.h"
#include "net/log/net_log.h"
#include "net/server/http_server_request_info.h"
#include "net/socket/server_socket.h"
#include "net/socket/tcp_server_socket.h"
namespace ui {
namespace devtools {
namespace {
const char kChromeDeveloperToolsPrefix[] =
"chrome-devtools://devtools/bundled/inspector.html?ws=";
bool IsUiDevToolsEnabled() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(kEnableUiDevTools);
}
int GetUiDevToolsPort() {
DCHECK(IsUiDevToolsEnabled());
constexpr int kDefaultPort = 9223;
int port;
if (!base::StringToInt(
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
kEnableUiDevTools),
&port))
port = kDefaultPort;
return port;
}
} // namespace
UiDevToolsServer* UiDevToolsServer::devtools_server_ = nullptr;
UiDevToolsServer::UiDevToolsServer(
scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner)
: io_thread_task_runner_(io_thread_task_runner) {
DCHECK(!devtools_server_);
main_thread_task_runner_ = base::ThreadTaskRunnerHandle::Get();
devtools_server_ = this;
if (io_thread_task_runner_)
return;
// If io_thread_task_runner not passed in, create an I/O thread
thread_.reset(new base::Thread("UiDevToolsServerThread"));
base::Thread::Options options;
options.message_loop_type = base::MessageLoop::TYPE_IO;
CHECK(thread_->StartWithOptions(options));
io_thread_task_runner_ = thread_->task_runner();
}
UiDevToolsServer::~UiDevToolsServer() {
devtools_server_ = nullptr;
}
// static
std::unique_ptr<UiDevToolsServer> UiDevToolsServer::Create(
scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner) {
std::unique_ptr<UiDevToolsServer> server;
if (IsUiDevToolsEnabled() && !devtools_server_) {
// TODO(mhashmi): Change port if more than one inspectable clients
server.reset(new UiDevToolsServer(io_thread_task_runner));
server->Start("127.0.0.1", GetUiDevToolsPort());
}
return server;
}
// static
std::vector<UiDevToolsServer::NameUrlPair>
UiDevToolsServer::GetClientNamesAndUrls() {
std::vector<NameUrlPair> pairs;
if (!devtools_server_)
return pairs;
for (ClientsList::size_type i = 0; i != devtools_server_->clients_.size();
i++) {
pairs.push_back(std::pair<std::string, std::string>(
devtools_server_->clients_[i]->name(),
base::StringPrintf("%slocalhost:%d/%" PRIuS,
kChromeDeveloperToolsPrefix, GetUiDevToolsPort(),
i)));
}
return pairs;
}
void UiDevToolsServer::AttachClient(std::unique_ptr<UiDevToolsClient> client) {
clients_.push_back(std::move(client));
}
void UiDevToolsServer::SendOverWebSocket(int connection_id,
const String& message) {
io_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&net::HttpServer::SendOverWebSocket,
base::Unretained(server_.get()), connection_id, message));
}
void UiDevToolsServer::Start(const std::string& address_string, uint16_t port) {
io_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&UiDevToolsServer::StartServer,
base::Unretained(this), address_string, port));
}
void UiDevToolsServer::StartServer(const std::string& address_string,
uint16_t port) {
DCHECK(!server_);
std::unique_ptr<net::ServerSocket> socket(
new net::TCPServerSocket(nullptr, net::NetLogSource()));
constexpr int kBacklog = 1;
if (socket->ListenWithAddressAndPort(address_string, port, kBacklog) !=
net::OK)
return;
server_ = base::MakeUnique<net::HttpServer>(std::move(socket), this);
}
// HttpServer::Delegate Implementation
void UiDevToolsServer::OnConnect(int connection_id) {
NOTIMPLEMENTED();
}
void UiDevToolsServer::OnHttpRequest(int connection_id,
const net::HttpServerRequestInfo& info) {
NOTIMPLEMENTED();
}
void UiDevToolsServer::OnWebSocketRequest(
int connection_id,
const net::HttpServerRequestInfo& info) {
size_t target_id = 0;
if (info.path.empty() ||
!base::StringToSizeT(info.path.substr(1), &target_id) ||
target_id > clients_.size())
return;
UiDevToolsClient* client = clients_[target_id].get();
// Only one user can inspect the client at a time
if (client->connected())
return;
client->set_connection_id(connection_id);
connections_[connection_id] = client;
io_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&net::HttpServer::AcceptWebSocket,
base::Unretained(server_.get()), connection_id, info));
}
void UiDevToolsServer::OnWebSocketMessage(int connection_id,
const std::string& data) {
ConnectionsMap::iterator it = connections_.find(connection_id);
DCHECK(it != connections_.end());
UiDevToolsClient* client = it->second;
DCHECK(client);
main_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&UiDevToolsClient::Dispatch, base::Unretained(client), data));
}
void UiDevToolsServer::OnClose(int connection_id) {
ConnectionsMap::iterator it = connections_.find(connection_id);
if (it == connections_.end())
return;
UiDevToolsClient* client = it->second;
DCHECK(client);
main_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&UiDevToolsClient::Disconnect, base::Unretained(client)));
connections_.erase(it);
}
} // namespace devtools
} // namespace ui
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