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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 "chrome/browser/extensions/api/web_socket_proxy_private/web_socket_proxy_private_api.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/internal_auth.h"
#include "chrome/browser/io_thread.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "net/base/escape.h"
#include "net/base/net_errors.h"
#include "net/base/net_log.h"
#include "net/base/net_util.h"
#include "net/dns/single_request_host_resolver.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/web_socket_proxy_controller.h"
#endif
namespace extensions {
WebSocketProxyPrivate::WebSocketProxyPrivate()
: port_(-1),
listening_port_(-1),
do_tls_(false),
is_finalized_(false) {
}
WebSocketProxyPrivate::~WebSocketProxyPrivate() {
}
void WebSocketProxyPrivate::Finalize() {
CustomFinalize();
if (is_finalized_)
return;
is_finalized_ = true;
SendResponse(listening_port_ > 0);
Release();
}
void WebSocketProxyPrivate::Observe(
int type, const content::NotificationSource& source,
const content::NotificationDetails& details) {
#if defined(OS_CHROMEOS)
DCHECK_EQ(chrome::NOTIFICATION_WEB_SOCKET_PROXY_STARTED, type);
#else
NOTREACHED();
#endif
timer_.Stop(); // Cancel timeout timer.
ResolveHost();
}
void WebSocketProxyPrivate::ResolveHost() {
#if defined(OS_CHROMEOS)
IOThread* io_thread = g_browser_process->io_thread();
content::BrowserThread::PostTask(content::BrowserThread::IO, FROM_HERE,
base::Bind(&WebSocketProxyPrivate::ResolveHostIOPart, this, io_thread));
#endif
}
void WebSocketProxyPrivate::ResolveHostIOPart(IOThread* io_thread) {
#if defined(OS_CHROMEOS)
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
DCHECK(resolver_ == NULL);
if (io_thread && io_thread->globals()) {
net::HostResolver* host_resolver =
io_thread->globals()->host_resolver.get();
if (host_resolver) {
resolver_.reset(new net::SingleRequestHostResolver(host_resolver));
net::HostResolver::RequestInfo info(net::HostPortPair(
hostname_, port_));
int result = resolver_->Resolve(info, &addr_,
base::Bind(&WebSocketProxyPrivate::OnHostResolution, this),
net::BoundNetLog());
if (result != net::ERR_IO_PENDING)
OnHostResolution(result);
return;
}
}
NOTREACHED();
OnHostResolution(net::ERR_UNEXPECTED);
#endif
}
bool WebSocketProxyPrivate::RunImpl() {
AddRef();
SetResult(Value::CreateStringValue(std::string()));
#if defined(OS_CHROMEOS)
bool delay_response = false;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &hostname_));
EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(1, &port_));
listening_port_ = chromeos::WebSocketProxyController::GetPort();
if (listening_port_ < 1) {
delay_response = true;
registrar_.Add(
this, chrome::NOTIFICATION_WEB_SOCKET_PROXY_STARTED,
content::NotificationService::AllSources());
}
map_["hostname"] = hostname_;
map_["port"] = base::IntToString(port_);
map_["extension_id"] = extension_id();
if (delay_response) {
const int kTimeout = 12;
timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(kTimeout),
this, &WebSocketProxyPrivate::ResolveHost);
} else {
ResolveHost();
}
#else
Finalize();
#endif
return true;
}
void WebSocketProxyPrivate::OnHostResolution(int result) {
#if defined(OS_CHROMEOS)
if (result == 0 && !addr_.empty()) {
std::string ip = addr_.front().ToStringWithoutPort();
if (!ip.empty() && ip.find(':') != std::string::npos && ip[0] != '[')
ip = '[' + ip + ']';
map_["addr"] = ip;
}
content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
base::Bind(&WebSocketProxyPrivate::Finalize, this));
#endif
}
WebSocketProxyPrivateGetURLForTCPFunction::
WebSocketProxyPrivateGetURLForTCPFunction() {
}
WebSocketProxyPrivateGetURLForTCPFunction::
~WebSocketProxyPrivateGetURLForTCPFunction() {
}
void WebSocketProxyPrivateGetURLForTCPFunction::CustomFinalize() {
#if defined(OS_CHROMEOS)
std::string passport = chrome::InternalAuthGeneration::GeneratePassport(
"web_socket_proxy", map_);
std::string query = std::string("hostname=") +
net::EscapeQueryParamValue(hostname_, false) + "&port=" + map_["port"] +
"&tls=" + map_["tls"] + "&passport=" +
net::EscapeQueryParamValue(passport, false);
if (ContainsKey(map_, "addr"))
query += std::string("&addr=") + map_["addr"];
if (listening_port_ < 1)
listening_port_ = chromeos::WebSocketProxyController::GetPort();
StringValue* url = Value::CreateStringValue(std::string(
"ws://127.0.0.1:" + base::IntToString(listening_port_) +
"/tcpproxy?" + query));
SetResult(url);
#endif
}
bool WebSocketProxyPrivateGetURLForTCPFunction::RunImpl() {
#if defined(OS_CHROMEOS)
DictionaryValue* qualification = NULL;
if (args_->GetDictionary(2, &qualification)) {
const char kTlsOption[] = "tls";
if (qualification->HasKey(kTlsOption)) {
EXTENSION_FUNCTION_VALIDATE(qualification->GetBoolean(
kTlsOption, &do_tls_));
}
}
map_["tls"] = do_tls_ ? "true" : "false";
#endif
return WebSocketProxyPrivate::RunImpl();
}
WebSocketProxyPrivateGetPassportForTCPFunction::
WebSocketProxyPrivateGetPassportForTCPFunction() {
// This obsolete API uses fixed port to listen websocket connections.
listening_port_ = 10101;
}
WebSocketProxyPrivateGetPassportForTCPFunction::
~WebSocketProxyPrivateGetPassportForTCPFunction() {
}
void WebSocketProxyPrivateGetPassportForTCPFunction::CustomFinalize() {
#if defined(OS_CHROMEOS)
std::string passport = chrome::InternalAuthGeneration::GeneratePassport(
"web_socket_proxy", map_) + std::string(":");
if (ContainsKey(map_, "addr"))
passport += map_["addr"];
SetResult(Value::CreateStringValue(passport));
#endif
}
} // namespace extensions
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