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