chrome/browser/android/dev_tools_server.cc

   1 // Copyright (c) 2012 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 "chrome/browser/android/dev_tools_server.h"
   6
   7 #include <pwd.h>
   8 #include <cstring>
   9
  10 #include "base/android/jni_string.h"
  11 #include "base/basictypes.h"
  12 #include "base/bind.h"
  13 #include "base/callback.h"
  14 #include "base/command_line.h"
  15 #include "base/compiler_specific.h"
  16 #include "base/files/file_path.h"
  17 #include "base/logging.h"
  18 #include "base/strings/string_number_conversions.h"
  19 #include "base/strings/stringprintf.h"
  20 #include "base/strings/utf_string_conversions.h"
  21 #include "chrome/browser/android/tab_android.h"
  22 #include "chrome/browser/browser_process.h"
  23 #include "chrome/browser/history/top_sites_factory.h"
  24 #include "chrome/browser/profiles/profile_manager.h"
  25 #include "chrome/browser/ui/android/tab_model/tab_model.h"
  26 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
  27 #include "chrome/common/chrome_content_client.h"
  28 #include "components/devtools_http_handler/devtools_http_handler.h"
  29 #include "components/devtools_http_handler/devtools_http_handler_delegate.h"
  30 #include "components/history/core/browser/top_sites.h"
  31 #include "components/version_info/version_info.h"
  32 #include "content/public/browser/android/devtools_auth.h"
  33 #include "content/public/browser/browser_thread.h"
  34 #include "content/public/browser/devtools_agent_host.h"
  35 #include "content/public/browser/favicon_status.h"
  36 #include "content/public/browser/navigation_entry.h"
  37 #include "content/public/browser/render_view_host.h"
  38 #include "content/public/browser/web_contents.h"
  39 #include "content/public/browser/web_contents_delegate.h"
  40 #include "content/public/common/content_switches.h"
  41 #include "content/public/common/url_constants.h"
  42 #include "content/public/common/user_agent.h"
  43 #include "grit/browser_resources.h"
  44 #include "jni/DevToolsServer_jni.h"
  45 #include "net/base/net_errors.h"
  46 #include "net/socket/unix_domain_server_socket_posix.h"
  47 #include "net/url_request/url_request_context_getter.h"
  48 #include "ui/base/resource/resource_bundle.h"
  49
  50 using content::DevToolsAgentHost;
  51 using content::RenderViewHost;
  52 using content::WebContents;
  53 using devtools_http_handler::DevToolsHttpHandler;
  54
  55 namespace {
  56
  57 // TL;DR: Do not change this string.
  58 //
  59 // Desktop Chrome relies on this format to identify debuggable apps on Android
  60 // (see the code under chrome/browser/devtools/device).
  61 // If this string ever changes it would not be sufficient to change the
  62 // corresponding string on the client side. Since debugging an older version of
  63 // Chrome for Android from a newer version of desktop Chrome is a very common
  64 // scenario, the client code will have to be modified to recognize both the old
  65 // and the new format.
  66 const char kDevToolsChannelNameFormat[] = "%s_devtools_remote";
  67
  68 const char kFrontEndURL[] =
  69     "http://chrome-devtools-frontend.appspot.com/serve_rev/%s/inspector.html";
  70 const char kTetheringSocketName[] = "chrome_devtools_tethering_%d_%d";
  71
  72 const int kBackLog = 10;
  73
  74 bool AuthorizeSocketAccessWithDebugPermission(
  75     const net::UnixDomainServerSocket::Credentials& credentials) {
  76   JNIEnv* env = base::android::AttachCurrentThread();
  77   return Java_DevToolsServer_checkDebugPermission(
  78       env, base::android::GetApplicationContext(),
  79       credentials.process_id, credentials.user_id) ||
  80       content::CanUserConnectToDevTools(credentials);
  81 }
  82
  83 // Delegate implementation for the devtools http handler on android. A new
  84 // instance of this gets created each time devtools is enabled.
  85 class DevToolsServerDelegate :
  86     public devtools_http_handler::DevToolsHttpHandlerDelegate {
  87  public:
  88   DevToolsServerDelegate() {
  89   }
  90
  91   std::string GetDiscoveryPageHTML() override {
  92     // TopSites updates itself after a delay. Ask TopSites to update itself
  93     // when we're about to show the remote debugging landing page.
  94     content::BrowserThread::PostTask(
  95         content::BrowserThread::UI,
  96         FROM_HERE,
  97         base::Bind(&DevToolsServerDelegate::PopulatePageThumbnails));
  98     return ResourceBundle::GetSharedInstance().GetRawDataResource(
  99         IDR_DEVTOOLS_DISCOVERY_PAGE_HTML).as_string();
 100   }
 101
 102   std::string GetFrontendResource(const std::string& path) override {
 103     return std::string();
 104   }
 105
 106   std::string GetPageThumbnailData(const GURL& url) override {
 107     Profile* profile =
 108         ProfileManager::GetLastUsedProfile()->GetOriginalProfile();
 109     scoped_refptr<history::TopSites> top_sites =
 110         TopSitesFactory::GetForProfile(profile);
 111     if (top_sites) {
 112       scoped_refptr<base::RefCountedMemory> data;
 113       if (top_sites->GetPageThumbnail(url, false, &data))
 114         return std::string(data->front_as<char>(), data->size());
 115     }
 116     return std::string();
 117   }
 118
 119  private:
 120   static void PopulatePageThumbnails() {
 121     Profile* profile =
 122         ProfileManager::GetLastUsedProfile()->GetOriginalProfile();
 123     scoped_refptr<history::TopSites> top_sites =
 124         TopSitesFactory::GetForProfile(profile);
 125     if (top_sites)
 126       top_sites->SyncWithHistory();
 127   }
 128
 129   DISALLOW_COPY_AND_ASSIGN(DevToolsServerDelegate);
 130 };
 131
 132 // Factory for UnixDomainServerSocket. It tries a fallback socket when
 133 // original socket doesn't work.
 134 class UnixDomainServerSocketFactory
 135     : public DevToolsHttpHandler::ServerSocketFactory {
 136  public:
 137   UnixDomainServerSocketFactory(
 138       const std::string& socket_name,
 139       const net::UnixDomainServerSocket::AuthCallback& auth_callback)
 140       : socket_name_(socket_name),
 141         last_tethering_socket_(0),
 142         auth_callback_(auth_callback) {
 143   }
 144
 145  private:
 146   scoped_ptr<net::ServerSocket> CreateForHttpServer() override {
 147     scoped_ptr<net::ServerSocket> socket(
 148         new net::UnixDomainServerSocket(auth_callback_,
 149                                         true /* use_abstract_namespace */));
 150
 151     if (socket->ListenWithAddressAndPort(socket_name_, 0, kBackLog) == net::OK)
 152       return socket.Pass();
 153
 154     // Try a fallback socket name.
 155     const std::string fallback_address(
 156         base::StringPrintf("%s_%d", socket_name_.c_str(), getpid()));
 157     if (socket->ListenWithAddressAndPort(fallback_address, 0, kBackLog)
 158         == net::OK)
 159       return socket.Pass();
 160
 161     return scoped_ptr<net::ServerSocket>();
 162   }
 163
 164   scoped_ptr<net::ServerSocket> CreateForTethering(std::string* name) override {
 165     *name = base::StringPrintf(
 166         kTetheringSocketName, getpid(), ++last_tethering_socket_);
 167     scoped_ptr<net::UnixDomainServerSocket> socket(
 168         new net::UnixDomainServerSocket(auth_callback_, true));
 169     if (socket->ListenWithAddressAndPort(*name, 0, kBackLog) != net::OK)
 170       return scoped_ptr<net::ServerSocket>();
 171
 172     return socket.Pass();
 173   }
 174
 175   std::string socket_name_;
 176   int last_tethering_socket_;
 177   net::UnixDomainServerSocket::AuthCallback auth_callback_;
 178
 179   DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocketFactory);
 180 };
 181
 182 }  // namespace
 183
 184 DevToolsServer::DevToolsServer(const std::string& socket_name_prefix)
 185     : socket_name_(base::StringPrintf(kDevToolsChannelNameFormat,
 186                                       socket_name_prefix.c_str())) {
 187   // Override the socket name if one is specified on the command line.
 188   const base::CommandLine& command_line =
 189       *base::CommandLine::ForCurrentProcess();
 190   if (command_line.HasSwitch(switches::kRemoteDebuggingSocketName)) {
 191     socket_name_ = command_line.GetSwitchValueASCII(
 192         switches::kRemoteDebuggingSocketName);
 193   }
 194 }
 195
 196 DevToolsServer::~DevToolsServer() {
 197   Stop();
 198 }
 199
 200 void DevToolsServer::Start(bool allow_debug_permission) {
 201   if (devtools_http_handler_)
 202     return;
 203
 204   net::UnixDomainServerSocket::AuthCallback auth_callback =
 205       allow_debug_permission ?
 206           base::Bind(&AuthorizeSocketAccessWithDebugPermission) :
 207           base::Bind(&content::CanUserConnectToDevTools);
 208   scoped_ptr<DevToolsHttpHandler::ServerSocketFactory> factory(
 209       new UnixDomainServerSocketFactory(socket_name_, auth_callback));
 210   devtools_http_handler_.reset(new DevToolsHttpHandler(
 211       factory.Pass(),
 212       base::StringPrintf(kFrontEndURL, content::GetWebKitRevision().c_str()),
 213       new DevToolsServerDelegate(),
 214       base::FilePath(),
 215       base::FilePath(),
 216       version_info::GetProductNameAndVersionForUserAgent(),
 217       ::GetUserAgent()));
 218 }
 219
 220 void DevToolsServer::Stop() {
 221   devtools_http_handler_.reset();
 222 }
 223
 224 bool DevToolsServer::IsStarted() const {
 225   return devtools_http_handler_;
 226 }
 227
 228 bool RegisterDevToolsServer(JNIEnv* env) {
 229   return RegisterNativesImpl(env);
 230 }
 231
 232 static jlong InitRemoteDebugging(JNIEnv* env,
 233                                 jobject obj,
 234                                 jstring socket_name_prefix) {
 235   DevToolsServer* server = new DevToolsServer(
 236       base::android::ConvertJavaStringToUTF8(env, socket_name_prefix));
 237   return reinterpret_cast<intptr_t>(server);
 238 }
 239
 240 static void DestroyRemoteDebugging(JNIEnv* env, jobject obj, jlong server) {
 241   delete reinterpret_cast<DevToolsServer*>(server);
 242 }
 243
 244 static jboolean IsRemoteDebuggingEnabled(JNIEnv* env,
 245                                          jobject obj,
 246                                          jlong server) {
 247   return reinterpret_cast<DevToolsServer*>(server)->IsStarted();
 248 }
 249
 250 static void SetRemoteDebuggingEnabled(JNIEnv* env,
 251                                       jobject obj,
 252                                       jlong server,
 253                                       jboolean enabled,
 254                                       jboolean allow_debug_permission) {
 255   DevToolsServer* devtools_server = reinterpret_cast<DevToolsServer*>(server);
 256   if (enabled) {
 257     devtools_server->Start(allow_debug_permission);
 258   } else {
 259     devtools_server->Stop();
 260   }
 261 }