Implement chrome://plugins page that can disable plugins.

chrome/browser/dom_ui/plugins_ui.cc

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/dom_ui/plugins_ui.h"
+
+#include "app/l10n_util.h"
+#include "app/resource_bundle.h"
+#include "base/singleton.h"
+#include "base/values.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
+#include "chrome/browser/pref_service.h"
+#include "chrome/browser/profile.h"
+#include "chrome/common/jstemplate_builder.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/common/url_constants.h"
+#include "grit/browser_resources.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+#include "webkit/glue/plugins/plugin_list.h"
+
+namespace {
+
+///////////////////////////////////////////////////////////////////////////////
+//
+// PluginsHTMLSource
+//
+///////////////////////////////////////////////////////////////////////////////
+
+class PluginsUIHTMLSource : public ChromeURLDataManager::DataSource {
+ public:
+  PluginsUIHTMLSource()
+      : DataSource(chrome::kChromeUIPluginsHost, MessageLoop::current()) {}
+
+  // Called when the network layer has requested a resource underneath
+  // the path we registered.
+  virtual void StartDataRequest(const std::string& path,
+                                bool is_off_the_record,
+                                int request_id);
+  virtual std::string GetMimeType(const std::string&) const {
+    return "text/html";
+  }
+
+ private:
+  ~PluginsUIHTMLSource() {}
+
+  DISALLOW_COPY_AND_ASSIGN(PluginsUIHTMLSource);
+};
+
+void PluginsUIHTMLSource::StartDataRequest(const std::string& path,
+    bool is_off_the_record, int request_id) {
+  // Strings used in the JsTemplate file.
+  DictionaryValue localized_strings;
+  localized_strings.SetString(L"pluginsTitle",
+      l10n_util::GetString(IDS_PLUGINS_TITLE));
+  localized_strings.SetString(L"pluginsDetailsModeLink",
+      l10n_util::GetString(IDS_PLUGINS_DETAILS_MODE_LINK));
+  localized_strings.SetString(L"pluginsNoneInstalled",
+      l10n_util::GetString(IDS_PLUGINS_NONE_INSTALLED));
+  localized_strings.SetString(L"pluginDisabled",
+      l10n_util::GetString(IDS_PLUGINS_DISABLED_PLUGIN));
+  localized_strings.SetString(L"pluginVersion",
+      l10n_util::GetString(IDS_PLUGINS_VERSION));
+  localized_strings.SetString(L"pluginDescription",
+      l10n_util::GetString(IDS_PLUGINS_DESCRIPTION));
+  localized_strings.SetString(L"pluginPath",
+      l10n_util::GetString(IDS_PLUGINS_PATH));
+  localized_strings.SetString(L"pluginMimeTypes",
+      l10n_util::GetString(IDS_PLUGINS_MIME_TYPES));
+  localized_strings.SetString(L"pluginMimeTypesMimeType",
+      l10n_util::GetString(IDS_PLUGINS_MIME_TYPES_MIME_TYPE));
+  localized_strings.SetString(L"pluginMimeTypesDescription",
+      l10n_util::GetString(IDS_PLUGINS_MIME_TYPES_DESCRIPTION));
+  localized_strings.SetString(L"pluginMimeTypesFileExtensions",
+      l10n_util::GetString(IDS_PLUGINS_MIME_TYPES_FILE_EXTENSIONS));
+  localized_strings.SetString(L"disable",
+      l10n_util::GetString(IDS_PLUGINS_DISABLE));
+  localized_strings.SetString(L"enable",
+      l10n_util::GetString(IDS_PLUGINS_ENABLE));
+
+  ChromeURLDataManager::DataSource::SetFontAndTextDirection(&localized_strings);
+
+  static const base::StringPiece plugins_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(IDR_PLUGINS_HTML));
+  std::string full_html(plugins_html.data(), plugins_html.size());
+  jstemplate_builder::AppendJsonHtml(&localized_strings, &full_html);
+  jstemplate_builder::AppendI18nTemplateSourceHtml(&full_html);
+  jstemplate_builder::AppendI18nTemplateProcessHtml(&full_html);
+  jstemplate_builder::AppendJsTemplateSourceHtml(&full_html);
+
+  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
+  html_bytes->data.resize(full_html.size());
+  std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
+
+  SendResponse(request_id, html_bytes);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// PluginsDOMHandler
+//
+////////////////////////////////////////////////////////////////////////////////
+
+// The handler for Javascript messages related to the "history" view.
+// TODO(viettrungluu): Make plugin list updates notify, and then observe
+// changes; maybe replumb plugin list through plugin service?
+// <http://crbug.com/39101>
+class PluginsDOMHandler : public DOMMessageHandler {
+ public:
+  PluginsDOMHandler() {}
+  virtual ~PluginsDOMHandler() {}
+
+  // DOMMessageHandler implementation.
+  virtual void RegisterMessages();
+
+  // Callback for the "requestPluginsData" message.
+  void HandleRequestPluginsData(const Value* value);
+
+  // Callback for the "enablePlugin" message.
+  void HandleEnablePluginMessage(const Value* value);
+
+ private:
+  // Creates a dictionary containing all the information about the given plugin;
+  // this is put into the list to "return" for the "requestPluginsData" message.
+  DictionaryValue* CreatePluginDetailValue(const WebPluginInfo& plugin);
+
+  // Creates a dictionary containing the important parts of the information
+  // about the given plugin; this is put into a list and saved in prefs.
+  DictionaryValue* CreatePluginSummaryValue(const WebPluginInfo& plugin);
+
+  // Update the user preferences to reflect the current (user-selected) state of
+  // plugins.
+  void UpdatePreferences();
+
+  DISALLOW_COPY_AND_ASSIGN(PluginsDOMHandler);
+};
+
+void PluginsDOMHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("requestPluginsData",
+      NewCallback(this, &PluginsDOMHandler::HandleRequestPluginsData));
+  dom_ui_->RegisterMessageCallback("enablePlugin",
+      NewCallback(this, &PluginsDOMHandler::HandleEnablePluginMessage));
+}
+
+void PluginsDOMHandler::HandleRequestPluginsData(const Value* value) {
+  DictionaryValue* results = new DictionaryValue();
+
+  // Add plugins to the results structure.
+  ListValue* plugins_list = new ListValue();
+
+  std::vector<WebPluginInfo> plugins;
+  NPAPI::PluginList::Singleton()->GetPlugins(false, &plugins);
+
+  for (std::vector<WebPluginInfo>::const_iterator it = plugins.begin();
+       it != plugins.end();
+       ++it) {
+    plugins_list->Append(CreatePluginDetailValue(*it));
+  }
+  results->Set(L"plugins", plugins_list);
+
+  dom_ui_->CallJavascriptFunction(L"returnPluginsData", *results);
+}
+
+void PluginsDOMHandler::HandleEnablePluginMessage(const Value* value) {
+  CHECK(value->IsType(Value::TYPE_LIST));
+  const ListValue* list = static_cast<const ListValue*>(value);
+  CHECK(list->GetSize() == 2);
+  FilePath::StringType plugin_path;
+  std::string enable_str;
+  CHECK(list->GetString(0, &plugin_path));
+  CHECK(list->GetString(1, &enable_str));
+  if (enable_str == "true")
+    NPAPI::PluginList::Singleton()->EnablePlugin(FilePath(plugin_path));
+  else
+    NPAPI::PluginList::Singleton()->DisablePlugin(FilePath(plugin_path));
+
+  // TODO(viettrungluu): It's morally wrong to do this here (it should be done
+  // by the plugins service), and we might also want to ensure that the plugins
+  // list is always written to prefs even when the user hasn't disabled a
+  // plugin. This will require refactoring the plugin list and service.
+  // <http://crbug.com/39101>
+  UpdatePreferences();
+}
+
+DictionaryValue* PluginsDOMHandler::CreatePluginDetailValue(
+    const WebPluginInfo& plugin) {
+  DictionaryValue* plugin_data = new DictionaryValue();
+  plugin_data->SetString(L"path", plugin.path.value());
+  plugin_data->SetString(L"name", plugin.name);
+  plugin_data->SetString(L"version", plugin.version);
+  plugin_data->SetString(L"description", plugin.desc);
+  plugin_data->SetBoolean(L"enabled", plugin.enabled);
+
+  ListValue* mime_types = new ListValue();
+  for (std::vector<WebPluginMimeType>::const_iterator type_it =
+           plugin.mime_types.begin();
+       type_it != plugin.mime_types.end();
+       ++type_it) {
+    DictionaryValue* mime_type = new DictionaryValue();
+    mime_type->SetString(L"mimeType", type_it->mime_type);
+    mime_type->SetString(L"description", type_it->description);
+
+    ListValue* file_extensions = new ListValue();
+    for (std::vector<std::string>::const_iterator ext_it =
+             type_it->file_extensions.begin();
+         ext_it != type_it->file_extensions.end();
+         ++ext_it) {
+      file_extensions->Append(new StringValue(*ext_it));
+    }
+    mime_type->Set(L"fileExtensions", file_extensions);
+
+    mime_types->Append(mime_type);
+  }
+  plugin_data->Set(L"mimeTypes", mime_types);
+
+  return plugin_data;
+}
+
+DictionaryValue* PluginsDOMHandler::CreatePluginSummaryValue(
+    const WebPluginInfo& plugin) {
+  DictionaryValue* plugin_data = new DictionaryValue();
+  plugin_data->SetString(L"path", plugin.path.value());
+  plugin_data->SetString(L"name", plugin.name);
+  plugin_data->SetString(L"version", plugin.version);
+  plugin_data->SetBoolean(L"enabled", plugin.enabled);
+  return plugin_data;
+}
+
+void PluginsDOMHandler::UpdatePreferences() {
+  ListValue* plugins_list = dom_ui_->GetProfile()->GetPrefs()->GetMutableList(
+      prefs::kPluginsPluginsList);
+  plugins_list->Clear();
+
+  std::vector<WebPluginInfo> plugins;
+  NPAPI::PluginList::Singleton()->GetPlugins(false, &plugins);
+
+  for (std::vector<WebPluginInfo>::const_iterator it = plugins.begin();
+       it != plugins.end();
+       ++it) {
+    plugins_list->Append(CreatePluginSummaryValue(*it));
+  }
+}
+
+}  // namespace
+
+///////////////////////////////////////////////////////////////////////////////
+//
+// PluginsUI
+//
+///////////////////////////////////////////////////////////////////////////////
+
+PluginsUI::PluginsUI(TabContents* contents) : DOMUI(contents) {
+  AddMessageHandler((new PluginsDOMHandler())->Attach(this));
+
+  PluginsUIHTMLSource* html_source = new PluginsUIHTMLSource();
+
+  // Set up the chrome://plugins/ source.
+  ChromeThread::PostTask(
+      ChromeThread::IO, FROM_HERE,
+      NewRunnableMethod(Singleton<ChromeURLDataManager>::get(),
+          &ChromeURLDataManager::AddDataSource,
+          make_scoped_refptr(html_source)));
+}
+
+
+// static
+RefCountedMemory* PluginsUI::GetFaviconResourceBytes() {
+  return ResourceBundle::GetSharedInstance().
+      LoadDataResourceBytes(IDR_PLUGIN);
+}
+
+// static
+void PluginsUI::RegisterUserPrefs(PrefService* prefs) {
+  prefs->RegisterListPref(prefs::kPluginsPluginsList);
+}