extensions/shell/browser/shell_content_browser_client.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 "extensions/shell/browser/shell_content_browser_client.h"
   6
   7 #include "base/command_line.h"
   8 #include "content/public/browser/browser_thread.h"
   9 #include "content/public/browser/render_process_host.h"
  10 #include "content/public/browser/site_instance.h"
  11 #include "content/public/common/content_descriptors.h"
  12 #include "content/public/common/content_switches.h"
  13 #include "content/public/common/url_constants.h"
  14 #include "content/shell/browser/shell_browser_context.h"
  15 #include "content/shell/browser/shell_devtools_manager_delegate.h"
  16 #include "extensions/browser/extension_message_filter.h"
  17 #include "extensions/browser/extension_protocols.h"
  18 #include "extensions/browser/extension_registry.h"
  19 #include "extensions/browser/guest_view/guest_view_message_filter.h"
  20 #include "extensions/browser/info_map.h"
  21 #include "extensions/browser/io_thread_extension_message_filter.h"
  22 #include "extensions/browser/process_map.h"
  23 #include "extensions/common/constants.h"
  24 #include "extensions/common/extension.h"
  25 #include "extensions/common/switches.h"
  26 #include "extensions/shell/browser/shell_browser_context.h"
  27 #include "extensions/shell/browser/shell_browser_main_parts.h"
  28 #include "extensions/shell/browser/shell_extension_system.h"
  29 #include "extensions/shell/browser/shell_speech_recognition_manager_delegate.h"
  30 #include "gin/v8_initializer.h"
  31 #include "url/gurl.h"
  32
  33 #if !defined(DISABLE_NACL)
  34 #include "components/nacl/browser/nacl_browser.h"
  35 #include "components/nacl/browser/nacl_host_message_filter.h"
  36 #include "components/nacl/browser/nacl_process_host.h"
  37 #include "components/nacl/common/nacl_process_type.h"
  38 #include "components/nacl/common/nacl_switches.h"
  39 #include "content/public/browser/browser_child_process_host.h"
  40 #include "content/public/browser/child_process_data.h"
  41 #endif
  42
  43 using base::CommandLine;
  44 using content::BrowserContext;
  45 using content::BrowserThread;
  46
  47 namespace extensions {
  48 namespace {
  49
  50 ShellContentBrowserClient* g_instance = nullptr;
  51
  52 }  // namespace
  53
  54 ShellContentBrowserClient::ShellContentBrowserClient(
  55     ShellBrowserMainDelegate* browser_main_delegate)
  56     :
  57 #if defined(OS_POSIX) && !defined(OS_MACOSX)
  58       v8_natives_fd_(-1),
  59       v8_snapshot_fd_(-1),
  60 #endif  // OS_POSIX && !OS_MACOSX
  61       browser_main_parts_(nullptr),
  62       browser_main_delegate_(browser_main_delegate) {
  63   DCHECK(!g_instance);
  64   g_instance = this;
  65 }
  66
  67 ShellContentBrowserClient::~ShellContentBrowserClient() {
  68   g_instance = nullptr;
  69 }
  70
  71 // static
  72 ShellContentBrowserClient* ShellContentBrowserClient::Get() {
  73   return g_instance;
  74 }
  75
  76 content::BrowserContext* ShellContentBrowserClient::GetBrowserContext() {
  77   return browser_main_parts_->browser_context();
  78 }
  79
  80 content::BrowserMainParts* ShellContentBrowserClient::CreateBrowserMainParts(
  81     const content::MainFunctionParams& parameters) {
  82   browser_main_parts_ =
  83       CreateShellBrowserMainParts(parameters, browser_main_delegate_);
  84   return browser_main_parts_;
  85 }
  86
  87 void ShellContentBrowserClient::RenderProcessWillLaunch(
  88     content::RenderProcessHost* host) {
  89   int render_process_id = host->GetID();
  90   BrowserContext* browser_context = browser_main_parts_->browser_context();
  91   host->AddFilter(
  92       new ExtensionMessageFilter(render_process_id, browser_context));
  93   host->AddFilter(
  94       new IOThreadExtensionMessageFilter(render_process_id, browser_context));
  95   host->AddFilter(
  96       new GuestViewMessageFilter(render_process_id, browser_context));
  97   // PluginInfoMessageFilter is not required because app_shell does not have
  98   // the concept of disabled plugins.
  99 #if !defined(DISABLE_NACL)
 100   host->AddFilter(new nacl::NaClHostMessageFilter(
 101       render_process_id,
 102       browser_context->IsOffTheRecord(),
 103       browser_context->GetPath(),
 104       browser_context->GetRequestContextForRenderProcess(render_process_id)));
 105 #endif
 106 }
 107
 108 bool ShellContentBrowserClient::ShouldUseProcessPerSite(
 109     content::BrowserContext* browser_context,
 110     const GURL& effective_url) {
 111   // This ensures that all render views created for a single app will use the
 112   // same render process (see content::SiteInstance::GetProcess). Otherwise the
 113   // default behavior of ContentBrowserClient will lead to separate render
 114   // processes for the background page and each app window view.
 115   return true;
 116 }
 117
 118 net::URLRequestContextGetter* ShellContentBrowserClient::CreateRequestContext(
 119     content::BrowserContext* content_browser_context,
 120     content::ProtocolHandlerMap* protocol_handlers,
 121     content::URLRequestInterceptorScopedVector request_interceptors) {
 122   // Handle only chrome-extension:// requests. app_shell does not support
 123   // chrome-extension-resource:// requests (it does not store shared extension
 124   // data in its installation directory).
 125   InfoMap* extension_info_map =
 126       browser_main_parts_->extension_system()->info_map();
 127   (*protocol_handlers)[kExtensionScheme] =
 128       linked_ptr<net::URLRequestJobFactory::ProtocolHandler>(
 129           CreateExtensionProtocolHandler(false /* is_incognito */,
 130                                          extension_info_map));
 131   return browser_main_parts_->browser_context()->CreateRequestContext(
 132       protocol_handlers, request_interceptors.Pass(), extension_info_map);
 133 }
 134
 135 bool ShellContentBrowserClient::IsHandledURL(const GURL& url) {
 136   if (!url.is_valid())
 137     return false;
 138   // Keep in sync with ProtocolHandlers added in CreateRequestContext() and in
 139   // content::ShellURLRequestContextGetter::GetURLRequestContext().
 140   static const char* const kProtocolList[] = {
 141       url::kBlobScheme,
 142       content::kChromeDevToolsScheme,
 143       content::kChromeUIScheme,
 144       url::kDataScheme,
 145       url::kFileScheme,
 146       url::kFileSystemScheme,
 147       kExtensionScheme,
 148       kExtensionResourceScheme,
 149   };
 150   for (size_t i = 0; i < arraysize(kProtocolList); ++i) {
 151     if (url.scheme() == kProtocolList[i])
 152       return true;
 153   }
 154   return false;
 155 }
 156
 157 void ShellContentBrowserClient::SiteInstanceGotProcess(
 158     content::SiteInstance* site_instance) {
 159   // If this isn't an extension renderer there's nothing to do.
 160   const Extension* extension = GetExtension(site_instance);
 161   if (!extension)
 162     return;
 163
 164   ProcessMap::Get(browser_main_parts_->browser_context())
 165       ->Insert(extension->id(),
 166                site_instance->GetProcess()->GetID(),
 167                site_instance->GetId());
 168
 169   BrowserThread::PostTask(
 170       BrowserThread::IO,
 171       FROM_HERE,
 172       base::Bind(&InfoMap::RegisterExtensionProcess,
 173                  browser_main_parts_->extension_system()->info_map(),
 174                  extension->id(),
 175                  site_instance->GetProcess()->GetID(),
 176                  site_instance->GetId()));
 177 }
 178
 179 void ShellContentBrowserClient::SiteInstanceDeleting(
 180     content::SiteInstance* site_instance) {
 181   // If this isn't an extension renderer there's nothing to do.
 182   const Extension* extension = GetExtension(site_instance);
 183   if (!extension)
 184     return;
 185
 186   ProcessMap::Get(browser_main_parts_->browser_context())
 187       ->Remove(extension->id(),
 188                site_instance->GetProcess()->GetID(),
 189                site_instance->GetId());
 190
 191   BrowserThread::PostTask(
 192       BrowserThread::IO,
 193       FROM_HERE,
 194       base::Bind(&InfoMap::UnregisterExtensionProcess,
 195                  browser_main_parts_->extension_system()->info_map(),
 196                  extension->id(),
 197                  site_instance->GetProcess()->GetID(),
 198                  site_instance->GetId()));
 199 }
 200
 201 void ShellContentBrowserClient::AppendExtraCommandLineSwitches(
 202     base::CommandLine* command_line,
 203     int child_process_id) {
 204   std::string process_type =
 205       command_line->GetSwitchValueASCII(::switches::kProcessType);
 206   if (process_type == ::switches::kRendererProcess)
 207     AppendRendererSwitches(command_line);
 208 }
 209
 210 content::SpeechRecognitionManagerDelegate*
 211 ShellContentBrowserClient::CreateSpeechRecognitionManagerDelegate() {
 212   return new speech::ShellSpeechRecognitionManagerDelegate();
 213 }
 214
 215 content::BrowserPpapiHost*
 216 ShellContentBrowserClient::GetExternalBrowserPpapiHost(int plugin_process_id) {
 217 #if !defined(DISABLE_NACL)
 218   content::BrowserChildProcessHostIterator iter(PROCESS_TYPE_NACL_LOADER);
 219   while (!iter.Done()) {
 220     nacl::NaClProcessHost* host = static_cast<nacl::NaClProcessHost*>(
 221         iter.GetDelegate());
 222     if (host->process() &&
 223         host->process()->GetData().id == plugin_process_id) {
 224       // Found the plugin.
 225       return host->browser_ppapi_host();
 226     }
 227     ++iter;
 228   }
 229 #endif
 230   return nullptr;
 231 }
 232
 233 void ShellContentBrowserClient::GetAdditionalAllowedSchemesForFileSystem(
 234     std::vector<std::string>* additional_allowed_schemes) {
 235   ContentBrowserClient::GetAdditionalAllowedSchemesForFileSystem(
 236       additional_allowed_schemes);
 237   additional_allowed_schemes->push_back(kExtensionScheme);
 238 }
 239
 240 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 241 void ShellContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
 242     const base::CommandLine& command_line,
 243     int child_process_id,
 244     content::FileDescriptorInfo* mappings) {
 245 #if defined(V8_USE_EXTERNAL_STARTUP_DATA)
 246   if (v8_natives_fd_.get() == -1 || v8_snapshot_fd_.get() == -1) {
 247     int v8_natives_fd = -1;
 248     int v8_snapshot_fd = -1;
 249     if (gin::V8Initializer::OpenV8FilesForChildProcesses(&v8_natives_fd,
 250                                                          &v8_snapshot_fd)) {
 251       v8_natives_fd_.reset(v8_natives_fd);
 252       v8_snapshot_fd_.reset(v8_snapshot_fd);
 253     }
 254   }
 255   DCHECK(v8_natives_fd_.get() != -1 && v8_snapshot_fd_.get() != -1);
 256   mappings->Share(kV8NativesDataDescriptor, v8_natives_fd_.get());
 257   mappings->Share(kV8SnapshotDataDescriptor, v8_snapshot_fd_.get());
 258 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
 259 }
 260 #endif  // OS_POSIX && !OS_MACOSX
 261
 262 content::DevToolsManagerDelegate*
 263 ShellContentBrowserClient::GetDevToolsManagerDelegate() {
 264   return new content::ShellDevToolsManagerDelegate(GetBrowserContext());
 265 }
 266
 267 ShellBrowserMainParts* ShellContentBrowserClient::CreateShellBrowserMainParts(
 268     const content::MainFunctionParams& parameters,
 269     ShellBrowserMainDelegate* browser_main_delegate) {
 270   return new ShellBrowserMainParts(parameters, browser_main_delegate);
 271 }
 272
 273 void ShellContentBrowserClient::AppendRendererSwitches(
 274     base::CommandLine* command_line) {
 275   // TODO(jamescook): Should we check here if the process is in the extension
 276   // service process map, or can we assume all renderers are extension
 277   // renderers?
 278   command_line->AppendSwitch(switches::kExtensionProcess);
 279
 280 #if !defined(DISABLE_NACL)
 281   // NOTE: app_shell does not support non-SFI mode, so it does not pass through
 282   // SFI switches either here or for the zygote process.
 283   static const char* const kSwitchNames[] = {
 284     ::switches::kEnableNaClDebug,
 285   };
 286   command_line->CopySwitchesFrom(*base::CommandLine::ForCurrentProcess(),
 287                                  kSwitchNames, arraysize(kSwitchNames));
 288 #endif  // !defined(DISABLE_NACL)
 289 }
 290
 291 const Extension* ShellContentBrowserClient::GetExtension(
 292     content::SiteInstance* site_instance) {
 293   ExtensionRegistry* registry =
 294       ExtensionRegistry::Get(site_instance->GetBrowserContext());
 295   return registry->enabled_extensions().GetExtensionOrAppByURL(
 296       site_instance->GetSiteURL());
 297 }
 298
 299 }  // namespace extensions