chromecast/browser/devtools/remote_debugging_server.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chromecast/browser/devtools/remote_debugging_server.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/command_line.h"
  10 #include "base/files/file_path.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "chromecast/base/pref_names.h"
  14 #include "chromecast/browser/cast_browser_process.h"
  15 #include "chromecast/browser/devtools/cast_dev_tools_delegate.h"
  16 #include "chromecast/common/cast_content_client.h"
  17 #include "components/devtools_http_handler/devtools_http_handler.h"
  18 #include "content/public/browser/browser_context.h"
  19 #include "content/public/browser/browser_thread.h"
  20 #include "content/public/common/content_switches.h"
  21 #include "content/public/common/user_agent.h"
  22 #include "net/base/net_errors.h"
  23 #include "net/socket/tcp_server_socket.h"
  24
  25 #if defined(OS_ANDROID)
  26 #include "content/public/browser/android/devtools_auth.h"
  27 #include "net/socket/unix_domain_server_socket_posix.h"
  28 #endif  // defined(OS_ANDROID)
  29
  30 using devtools_http_handler::DevToolsHttpHandler;
  31
  32 namespace chromecast {
  33 namespace shell {
  34
  35 namespace {
  36
  37 const char kFrontEndURL[] =
  38     "https://chrome-devtools-frontend.appspot.com/serve_rev/%s/inspector.html";
  39 const uint16 kDefaultRemoteDebuggingPort = 9222;
  40
  41 const int kBackLog = 10;
  42
  43 #if defined(OS_ANDROID)
  44 class UnixDomainServerSocketFactory
  45     : public DevToolsHttpHandler::ServerSocketFactory {
  46  public:
  47   explicit UnixDomainServerSocketFactory(const std::string& socket_name)
  48       : socket_name_(socket_name) {}
  49
  50  private:
  51   // devtools_http_handler::DevToolsHttpHandler::ServerSocketFactory.
  52   scoped_ptr<net::ServerSocket> CreateForHttpServer() override {
  53     scoped_ptr<net::ServerSocket> socket(
  54         new net::UnixDomainServerSocket(
  55             base::Bind(&content::CanUserConnectToDevTools),
  56             true /* use_abstract_namespace */));
  57     if (socket->ListenWithAddressAndPort(socket_name_, 0, kBackLog) != net::OK)
  58       return scoped_ptr<net::ServerSocket>();
  59
  60     return socket;
  61   }
  62
  63   std::string socket_name_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocketFactory);
  66 };
  67 #else
  68 class TCPServerSocketFactory
  69     : public DevToolsHttpHandler::ServerSocketFactory {
  70  public:
  71   TCPServerSocketFactory(const std::string& address, uint16 port)
  72       : address_(address), port_(port) {
  73   }
  74
  75  private:
  76   // devtools_http_handler::DevToolsHttpHandler::ServerSocketFactory.
  77   scoped_ptr<net::ServerSocket> CreateForHttpServer() override {
  78     scoped_ptr<net::ServerSocket> socket(
  79         new net::TCPServerSocket(nullptr, net::NetLog::Source()));
  80     if (socket->ListenWithAddressAndPort(address_, port_, kBackLog) != net::OK)
  81       return scoped_ptr<net::ServerSocket>();
  82
  83     return socket;
  84   }
  85
  86   std::string address_;
  87   uint16 port_;
  88
  89   DISALLOW_COPY_AND_ASSIGN(TCPServerSocketFactory);
  90 };
  91 #endif
  92
  93 scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>
  94 CreateSocketFactory(uint16 port) {
  95 #if defined(OS_ANDROID)
  96   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  97   std::string socket_name = "cast_shell_devtools_remote";
  98   if (command_line->HasSwitch(switches::kRemoteDebuggingSocketName)) {
  99     socket_name = command_line->GetSwitchValueASCII(
 100         switches::kRemoteDebuggingSocketName);
 101   }
 102   return scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>(
 103       new UnixDomainServerSocketFactory(socket_name));
 104 #else
 105   return scoped_ptr<DevToolsHttpHandler::ServerSocketFactory>(
 106       new TCPServerSocketFactory("0.0.0.0", port));
 107 #endif
 108 }
 109
 110 std::string GetFrontendUrl() {
 111   return base::StringPrintf(kFrontEndURL, content::GetWebKitRevision().c_str());
 112 }
 113
 114 }  // namespace
 115
 116 RemoteDebuggingServer::RemoteDebuggingServer(bool start_immediately)
 117     : port_(kDefaultRemoteDebuggingPort) {
 118   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 119   pref_enabled_.Init(prefs::kEnableRemoteDebugging,
 120                      CastBrowserProcess::GetInstance()->pref_service(),
 121                      base::Bind(&RemoteDebuggingServer::OnEnabledChanged,
 122                                 base::Unretained(this)));
 123
 124   std::string port_str =
 125       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
 126           switches::kRemoteDebuggingPort);
 127   if (!port_str.empty()) {
 128     int port = kDefaultRemoteDebuggingPort;
 129     if (base::StringToInt(port_str, &port)) {
 130       port_ = static_cast<uint16>(port);
 131     } else {
 132       port_ = kDefaultRemoteDebuggingPort;
 133     }
 134   }
 135
 136   // Starts new dev tools, clearing port number saved in config.
 137   // Remote debugging in production must be triggered only by config server.
 138   pref_enabled_.SetValue(start_immediately && port_ != 0);
 139   OnEnabledChanged();
 140 }
 141
 142 RemoteDebuggingServer::~RemoteDebuggingServer() {
 143   pref_enabled_.SetValue(false);
 144   OnEnabledChanged();
 145 }
 146
 147 void RemoteDebuggingServer::OnEnabledChanged() {
 148   bool enabled = *pref_enabled_ && port_ != 0;
 149   if (enabled && !devtools_http_handler_) {
 150     devtools_http_handler_.reset(new DevToolsHttpHandler(
 151         CreateSocketFactory(port_),
 152         GetFrontendUrl(),
 153         new CastDevToolsDelegate(),
 154         base::FilePath(),
 155         base::FilePath(),
 156         std::string(),
 157         GetUserAgent()));
 158     LOG(INFO) << "Devtools started: port=" << port_;
 159   } else if (!enabled && devtools_http_handler_) {
 160     LOG(INFO) << "Stop devtools: port=" << port_;
 161     devtools_http_handler_.reset();
 162   }
 163 }
 164
 165 }  // namespace shell
 166 }  // namespace chromecast