android_webview/native/aw_dev_tools_server.cc

   1 // Copyright 2013 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 "android_webview/native/aw_dev_tools_server.h"
   6
   7 #include "android_webview/native/aw_contents.h"
   8 #include "base/bind.h"
   9 #include "base/files/file_path.h"
  10 #include "base/json/json_writer.h"
  11 #include "base/strings/stringprintf.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/values.h"
  14 #include "content/public/browser/android/devtools_auth.h"
  15 #include "content/public/browser/devtools_agent_host.h"
  16 #include "content/public/browser/devtools_http_handler.h"
  17 #include "content/public/browser/devtools_http_handler_delegate.h"
  18 #include "content/public/browser/devtools_target.h"
  19 #include "content/public/browser/web_contents.h"
  20 #include "content/public/common/user_agent.h"
  21 #include "jni/AwDevToolsServer_jni.h"
  22 #include "net/base/net_errors.h"
  23 #include "net/socket/unix_domain_server_socket_posix.h"
  24
  25 using content::DevToolsAgentHost;
  26 using content::RenderViewHost;
  27 using content::WebContents;
  28
  29 namespace {
  30
  31 const char kFrontEndURL[] =
  32     "http://chrome-devtools-frontend.appspot.com/serve_rev/%s/inspector.html";
  33 const char kSocketNameFormat[] = "webview_devtools_remote_%d";
  34 const char kTetheringSocketName[] = "webview_devtools_tethering_%d_%d";
  35
  36 const int kBackLog = 10;
  37
  38 // Delegate implementation for the devtools http handler for WebView. A new
  39 // instance of this gets created each time web debugging is enabled.
  40 class AwDevToolsServerDelegate : public content::DevToolsHttpHandlerDelegate {
  41  public:
  42   AwDevToolsServerDelegate() : last_tethering_socket_(0) {
  43   }
  44
  45   virtual ~AwDevToolsServerDelegate() {}
  46
  47   // DevToolsHttpProtocolHandler::Delegate overrides.
  48   std::string GetDiscoveryPageHTML() override;
  49
  50   bool BundlesFrontendResources() override {
  51     return false;
  52   }
  53
  54   base::FilePath GetDebugFrontendDir() override {
  55     return base::FilePath();
  56   }
  57
  58   scoped_ptr<net::ServerSocket>
  59   CreateSocketForTethering(std::string* name) override {
  60     *name = base::StringPrintf(
  61         kTetheringSocketName, getpid(), ++last_tethering_socket_);
  62     scoped_ptr<net::UnixDomainServerSocket> socket(
  63         new net::UnixDomainServerSocket(
  64             base::Bind(&content::CanUserConnectToDevTools), true));
  65     if (socket->ListenWithAddressAndPort(*name, 0, kBackLog) != net::OK)
  66       return scoped_ptr<net::ServerSocket>();
  67
  68     return socket.Pass();
  69   }
  70
  71  private:
  72   int last_tethering_socket_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(AwDevToolsServerDelegate);
  75 };
  76
  77
  78 std::string AwDevToolsServerDelegate::GetDiscoveryPageHTML() {
  79   const char html[] =
  80       "<html>"
  81       "<head><title>WebView remote debugging</title></head>"
  82       "<body>Please use <a href=\'chrome://inspect\'>chrome://inspect</a>"
  83       "</body>"
  84       "</html>";
  85   return html;
  86 }
  87
  88 // Factory for UnixDomainServerSocket.
  89 class UnixDomainServerSocketFactory
  90     : public content::DevToolsHttpHandler::ServerSocketFactory {
  91  public:
  92   explicit UnixDomainServerSocketFactory(const std::string& socket_name)
  93       : content::DevToolsHttpHandler::ServerSocketFactory(socket_name, 0, 1) {}
  94
  95  private:
  96   // content::DevToolsHttpHandler::ServerSocketFactory.
  97   virtual scoped_ptr<net::ServerSocket> Create() const override {
  98     return scoped_ptr<net::ServerSocket>(
  99         new net::UnixDomainServerSocket(
 100             base::Bind(&content::CanUserConnectToDevTools),
 101             true /* use_abstract_namespace */));
 102   }
 103
 104   DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocketFactory);
 105 };
 106
 107 }  // namespace
 108
 109 namespace android_webview {
 110
 111 AwDevToolsServer::AwDevToolsServer() {
 112 }
 113
 114 AwDevToolsServer::~AwDevToolsServer() {
 115   Stop();
 116 }
 117
 118 void AwDevToolsServer::Start() {
 119   if (protocol_handler_)
 120     return;
 121
 122   scoped_ptr<content::DevToolsHttpHandler::ServerSocketFactory> factory(
 123       new UnixDomainServerSocketFactory(
 124           base::StringPrintf(kSocketNameFormat, getpid())));
 125   protocol_handler_.reset(content::DevToolsHttpHandler::Start(
 126       factory.Pass(),
 127       base::StringPrintf(kFrontEndURL, content::GetWebKitRevision().c_str()),
 128       new AwDevToolsServerDelegate(),
 129       base::FilePath()));
 130 }
 131
 132 void AwDevToolsServer::Stop() {
 133   protocol_handler_.reset();
 134 }
 135
 136 bool AwDevToolsServer::IsStarted() const {
 137   return protocol_handler_;
 138 }
 139
 140 bool RegisterAwDevToolsServer(JNIEnv* env) {
 141   return RegisterNativesImpl(env);
 142 }
 143
 144 static jlong InitRemoteDebugging(JNIEnv* env,
 145                                 jobject obj) {
 146   AwDevToolsServer* server = new AwDevToolsServer();
 147   return reinterpret_cast<intptr_t>(server);
 148 }
 149
 150 static void DestroyRemoteDebugging(JNIEnv* env, jobject obj, jlong server) {
 151   delete reinterpret_cast<AwDevToolsServer*>(server);
 152 }
 153
 154 static void SetRemoteDebuggingEnabled(JNIEnv* env,
 155                                       jobject obj,
 156                                       jlong server,
 157                                       jboolean enabled) {
 158   AwDevToolsServer* devtools_server =
 159       reinterpret_cast<AwDevToolsServer*>(server);
 160   if (enabled) {
 161     devtools_server->Start();
 162   } else {
 163     devtools_server->Stop();
 164   }
 165 }
 166
 167 }  // namespace android_webview