src/chrome/browser/ui/webui/plugins_ui.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/ui/webui/plugins_ui.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/bind_helpers.h"
  13 #include "base/memory/ref_counted_memory.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/singleton.h"
  16 #include "base/memory/weak_ptr.h"
  17 #include "base/message_loop/message_loop.h"
  18 #include "base/path_service.h"
  19 #include "base/prefs/pref_member.h"
  20 #include "base/prefs/pref_service.h"
  21 #include "base/prefs/scoped_user_pref_update.h"
  22 #include "base/strings/utf_string_conversions.h"
  23 #include "base/values.h"
  24 #include "chrome/browser/chrome_notification_types.h"
  25 #include "chrome/browser/content_settings/host_content_settings_map.h"
  26 #include "chrome/browser/plugins/plugin_finder.h"
  27 #include "chrome/browser/plugins/plugin_metadata.h"
  28 #include "chrome/browser/plugins/plugin_prefs.h"
  29 #include "chrome/browser/profiles/profile.h"
  30 #include "chrome/browser/ui/browser.h"
  31 #include "chrome/browser/ui/browser_window.h"
  32 #include "chrome/common/chrome_content_client.h"
  33 #include "chrome/common/chrome_paths.h"
  34 #include "chrome/common/pref_names.h"
  35 #include "chrome/common/url_constants.h"
  36 #include "components/user_prefs/pref_registry_syncable.h"
  37 #include "content/public/browser/notification_source.h"
  38 #include "content/public/browser/plugin_service.h"
  39 #include "content/public/browser/web_contents.h"
  40 #include "content/public/browser/web_ui.h"
  41 #include "content/public/browser/web_ui_data_source.h"
  42 #include "content/public/browser/web_ui_message_handler.h"
  43 #include "grit/browser_resources.h"
  44 #include "grit/generated_resources.h"
  45 #include "grit/theme_resources.h"
  46 #include "ui/base/l10n/l10n_util.h"
  47 #include "ui/base/resource/resource_bundle.h"
  48
  49 #if defined(OS_CHROMEOS)
  50 #include "chrome/browser/ui/webui/chromeos/ui_account_tweaks.h"
  51 #endif
  52
  53 using content::PluginService;
  54 using content::WebContents;
  55 using content::WebPluginInfo;
  56 using content::WebUIMessageHandler;
  57
  58 namespace {
  59
  60 // Callback function to process result of EnablePlugin method.
  61 void AssertPluginEnabled(bool did_enable) {
  62   DCHECK(did_enable);
  63 }
  64
  65 content::WebUIDataSource* CreatePluginsUIHTMLSource(Profile* profile) {
  66   content::WebUIDataSource* source =
  67       content::WebUIDataSource::Create(chrome::kChromeUIPluginsHost);
  68   source->SetUseJsonJSFormatV2();
  69
  70   source->AddLocalizedString("pluginsTitle", IDS_PLUGINS_TITLE);
  71   source->AddLocalizedString("pluginsDetailsModeLink",
  72                              IDS_PLUGINS_DETAILS_MODE_LINK);
  73   source->AddLocalizedString("pluginsNoneInstalled",
  74                              IDS_PLUGINS_NONE_INSTALLED);
  75   source->AddLocalizedString("pluginDisabled", IDS_PLUGINS_DISABLED_PLUGIN);
  76   source->AddLocalizedString("pluginDisabledByPolicy",
  77                              IDS_PLUGINS_DISABLED_BY_POLICY_PLUGIN);
  78   source->AddLocalizedString("pluginEnabledByPolicy",
  79                              IDS_PLUGINS_ENABLED_BY_POLICY_PLUGIN);
  80   source->AddLocalizedString("pluginGroupManagedByPolicy",
  81                              IDS_PLUGINS_GROUP_MANAGED_BY_POLICY);
  82   source->AddLocalizedString("pluginDownload", IDS_PLUGINS_DOWNLOAD);
  83   source->AddLocalizedString("pluginName", IDS_PLUGINS_NAME);
  84   source->AddLocalizedString("pluginVersion", IDS_PLUGINS_VERSION);
  85   source->AddLocalizedString("pluginDescription", IDS_PLUGINS_DESCRIPTION);
  86   source->AddLocalizedString("pluginPath", IDS_PLUGINS_PATH);
  87   source->AddLocalizedString("pluginType", IDS_PLUGINS_TYPE);
  88   source->AddLocalizedString("pluginMimeTypes", IDS_PLUGINS_MIME_TYPES);
  89   source->AddLocalizedString("pluginMimeTypesMimeType",
  90                              IDS_PLUGINS_MIME_TYPES_MIME_TYPE);
  91   source->AddLocalizedString("pluginMimeTypesDescription",
  92                              IDS_PLUGINS_MIME_TYPES_DESCRIPTION);
  93   source->AddLocalizedString("pluginMimeTypesFileExtensions",
  94                              IDS_PLUGINS_MIME_TYPES_FILE_EXTENSIONS);
  95   source->AddLocalizedString("disable", IDS_PLUGINS_DISABLE);
  96   source->AddLocalizedString("enable", IDS_PLUGINS_ENABLE);
  97   source->AddLocalizedString("alwaysAllowed", IDS_PLUGINS_ALWAYS_ALLOWED);
  98   source->AddLocalizedString("noPlugins", IDS_PLUGINS_NO_PLUGINS);
  99
 100   source->SetJsonPath("strings.js");
 101   source->AddResourcePath("plugins.js", IDR_PLUGINS_JS);
 102   source->SetDefaultResource(IDR_PLUGINS_HTML);
 103 #if defined(OS_CHROMEOS)
 104   chromeos::AddAccountUITweaksLocalizedValues(source, profile);
 105 #endif
 106   return source;
 107 }
 108
 109 base::string16 PluginTypeToString(int type) {
 110   // The type is stored as an |int|, but doing the switch on the right
 111   // enumeration type gives us better build-time error checking (if someone adds
 112   // a new type).
 113   switch (static_cast<WebPluginInfo::PluginType>(type)) {
 114     case WebPluginInfo::PLUGIN_TYPE_NPAPI:
 115       return l10n_util::GetStringUTF16(IDS_PLUGINS_NPAPI);
 116     case WebPluginInfo::PLUGIN_TYPE_PEPPER_IN_PROCESS:
 117       return l10n_util::GetStringUTF16(IDS_PLUGINS_PPAPI_IN_PROCESS);
 118     case WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS:
 119       return l10n_util::GetStringUTF16(IDS_PLUGINS_PPAPI_OUT_OF_PROCESS);
 120     case WebPluginInfo::PLUGIN_TYPE_PEPPER_UNSANDBOXED:
 121       return l10n_util::GetStringUTF16(IDS_PLUGINS_PPAPI_UNSANDBOXED);
 122   }
 123   NOTREACHED();
 124   return base::string16();
 125 }
 126
 127 ////////////////////////////////////////////////////////////////////////////////
 128 //
 129 // PluginsDOMHandler
 130 //
 131 ////////////////////////////////////////////////////////////////////////////////
 132
 133 // The handler for Javascript messages for the chrome://plugins/ page.
 134 // TODO(viettrungluu): Make plugin list updates notify, and then observe
 135 // changes; maybe replumb plugin list through plugin service?
 136 // <http://crbug.com/39101>
 137 class PluginsDOMHandler : public WebUIMessageHandler,
 138                           public content::NotificationObserver {
 139  public:
 140   explicit PluginsDOMHandler();
 141   virtual ~PluginsDOMHandler() {}
 142
 143   // WebUIMessageHandler implementation.
 144   virtual void RegisterMessages() OVERRIDE;
 145
 146   // Callback for the "requestPluginsData" message.
 147   void HandleRequestPluginsData(const base::ListValue* args);
 148
 149   // Callback for the "enablePlugin" message.
 150   void HandleEnablePluginMessage(const base::ListValue* args);
 151
 152   // Callback for the "saveShowDetailsToPrefs" message.
 153   void HandleSaveShowDetailsToPrefs(const base::ListValue* args);
 154
 155   // Calback for the "getShowDetails" message.
 156   void HandleGetShowDetails(const base::ListValue* args);
 157
 158   // Callback for the "setPluginAlwaysAllowed" message.
 159   void HandleSetPluginAlwaysAllowed(const base::ListValue* args);
 160
 161   // content::NotificationObserver method overrides
 162   virtual void Observe(int type,
 163                        const content::NotificationSource& source,
 164                        const content::NotificationDetails& details) OVERRIDE;
 165
 166  private:
 167   void LoadPlugins();
 168
 169   // Called on the UI thread when the plugin information is ready.
 170   void PluginsLoaded(const std::vector<WebPluginInfo>& plugins);
 171
 172   content::NotificationRegistrar registrar_;
 173
 174   // Holds grouped plug-ins. The key is the group identifier and
 175   // the value is the list of plug-ins belonging to the group.
 176   typedef base::hash_map<std::string, std::vector<const WebPluginInfo*> >
 177       PluginGroups;
 178
 179   // This pref guards the value whether about:plugins is in the details mode or
 180   // not.
 181   BooleanPrefMember show_details_;
 182
 183   base::WeakPtrFactory<PluginsDOMHandler> weak_ptr_factory_;
 184
 185   DISALLOW_COPY_AND_ASSIGN(PluginsDOMHandler);
 186 };
 187
 188 PluginsDOMHandler::PluginsDOMHandler()
 189     : weak_ptr_factory_(this) {
 190 }
 191
 192 void PluginsDOMHandler::RegisterMessages() {
 193   Profile* profile = Profile::FromWebUI(web_ui());
 194
 195   PrefService* prefs = profile->GetPrefs();
 196   show_details_.Init(prefs::kPluginsShowDetails, prefs);
 197
 198   registrar_.Add(this,
 199                  chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED,
 200                  content::Source<Profile>(profile));
 201
 202   web_ui()->RegisterMessageCallback("requestPluginsData",
 203       base::Bind(&PluginsDOMHandler::HandleRequestPluginsData,
 204                  base::Unretained(this)));
 205   web_ui()->RegisterMessageCallback("enablePlugin",
 206       base::Bind(&PluginsDOMHandler::HandleEnablePluginMessage,
 207                  base::Unretained(this)));
 208   web_ui()->RegisterMessageCallback("setPluginAlwaysAllowed",
 209       base::Bind(&PluginsDOMHandler::HandleSetPluginAlwaysAllowed,
 210                  base::Unretained(this)));
 211   web_ui()->RegisterMessageCallback("saveShowDetailsToPrefs",
 212       base::Bind(&PluginsDOMHandler::HandleSaveShowDetailsToPrefs,
 213                  base::Unretained(this)));
 214   web_ui()->RegisterMessageCallback("getShowDetails",
 215       base::Bind(&PluginsDOMHandler::HandleGetShowDetails,
 216                  base::Unretained(this)));
 217 }
 218
 219 void PluginsDOMHandler::HandleRequestPluginsData(const base::ListValue* args) {
 220   LoadPlugins();
 221 }
 222
 223 void PluginsDOMHandler::HandleEnablePluginMessage(const base::ListValue* args) {
 224   Profile* profile = Profile::FromWebUI(web_ui());
 225
 226   // Be robust in accepting badness since plug-ins display HTML (hence
 227   // JavaScript).
 228   if (args->GetSize() != 3) {
 229     NOTREACHED();
 230     return;
 231   }
 232
 233   std::string enable_str;
 234   std::string is_group_str;
 235   if (!args->GetString(1, &enable_str) || !args->GetString(2, &is_group_str)) {
 236     NOTREACHED();
 237     return;
 238   }
 239   bool enable = enable_str == "true";
 240
 241   PluginPrefs* plugin_prefs = PluginPrefs::GetForProfile(profile).get();
 242   if (is_group_str == "true") {
 243     base::string16 group_name;
 244     if (!args->GetString(0, &group_name)) {
 245       NOTREACHED();
 246       return;
 247     }
 248
 249     plugin_prefs->EnablePluginGroup(enable, group_name);
 250     if (enable) {
 251       // See http://crbug.com/50105 for background.
 252       base::string16 adobereader = base::ASCIIToUTF16(
 253           PluginMetadata::kAdobeReaderGroupName);
 254       base::string16 internalpdf =
 255           base::ASCIIToUTF16(ChromeContentClient::kPDFPluginName);
 256       if (group_name == adobereader)
 257         plugin_prefs->EnablePluginGroup(false, internalpdf);
 258       else if (group_name == internalpdf)
 259         plugin_prefs->EnablePluginGroup(false, adobereader);
 260     }
 261   } else {
 262     base::FilePath::StringType file_path;
 263     if (!args->GetString(0, &file_path)) {
 264       NOTREACHED();
 265       return;
 266     }
 267
 268     plugin_prefs->EnablePlugin(enable, base::FilePath(file_path),
 269                                base::Bind(&AssertPluginEnabled));
 270   }
 271 }
 272
 273 void PluginsDOMHandler::HandleSaveShowDetailsToPrefs(
 274     const base::ListValue* args) {
 275   std::string details_mode;
 276   if (!args->GetString(0, &details_mode)) {
 277     NOTREACHED();
 278     return;
 279   }
 280   show_details_.SetValue(details_mode == "true");
 281 }
 282
 283 void PluginsDOMHandler::HandleGetShowDetails(const base::ListValue* args) {
 284   base::FundamentalValue show_details(show_details_.GetValue());
 285   web_ui()->CallJavascriptFunction("loadShowDetailsFromPrefs", show_details);
 286 }
 287
 288 void PluginsDOMHandler::HandleSetPluginAlwaysAllowed(
 289     const base::ListValue* args) {
 290   // Be robust in the input parameters, but crash in a Debug build.
 291   if (args->GetSize() != 2) {
 292     NOTREACHED();
 293     return;
 294   }
 295
 296   std::string plugin;
 297   bool allowed = false;
 298   if (!args->GetString(0, &plugin) || !args->GetBoolean(1, &allowed)) {
 299     NOTREACHED();
 300     return;
 301   }
 302   Profile* profile = Profile::FromWebUI(web_ui());
 303   profile->GetHostContentSettingsMap()->SetContentSetting(
 304       ContentSettingsPattern::Wildcard(),
 305       ContentSettingsPattern::Wildcard(),
 306       CONTENT_SETTINGS_TYPE_PLUGINS,
 307       plugin,
 308       allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_DEFAULT);
 309
 310   // Keep track of the whitelist separately, so that we can distinguish plug-ins
 311   // whitelisted by the user from automatically whitelisted ones.
 312   DictionaryPrefUpdate update(profile->GetPrefs(),
 313                               prefs::kContentSettingsPluginWhitelist);
 314   update->SetBoolean(plugin, allowed);
 315 }
 316
 317 void PluginsDOMHandler::Observe(int type,
 318                                 const content::NotificationSource& source,
 319                                 const content::NotificationDetails& details) {
 320   DCHECK_EQ(chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED, type);
 321   LoadPlugins();
 322 }
 323
 324 void PluginsDOMHandler::LoadPlugins() {
 325   if (weak_ptr_factory_.HasWeakPtrs())
 326     return;
 327
 328   PluginService::GetInstance()->GetPlugins(
 329       base::Bind(&PluginsDOMHandler::PluginsLoaded,
 330                  weak_ptr_factory_.GetWeakPtr()));
 331 }
 332
 333 void PluginsDOMHandler::PluginsLoaded(
 334     const std::vector<WebPluginInfo>& plugins) {
 335   Profile* profile = Profile::FromWebUI(web_ui());
 336   PluginPrefs* plugin_prefs = PluginPrefs::GetForProfile(profile).get();
 337
 338   ContentSettingsPattern wildcard = ContentSettingsPattern::Wildcard();
 339
 340   PluginFinder* plugin_finder = PluginFinder::GetInstance();
 341   // Group plug-ins by identifier. This is done to be able to display
 342   // the plug-ins in UI in a grouped fashion.
 343   PluginGroups groups;
 344   for (size_t i = 0; i < plugins.size(); ++i) {
 345     scoped_ptr<PluginMetadata> plugin(
 346         plugin_finder->GetPluginMetadata(plugins[i]));
 347     groups[plugin->identifier()].push_back(&plugins[i]);
 348   }
 349
 350   // Construct DictionaryValues to return to UI.
 351   base::ListValue* plugin_groups_data = new base::ListValue();
 352   for (PluginGroups::const_iterator it = groups.begin();
 353       it != groups.end(); ++it) {
 354     const std::vector<const WebPluginInfo*>& group_plugins = it->second;
 355     base::ListValue* plugin_files = new base::ListValue();
 356     scoped_ptr<PluginMetadata> plugin_metadata(
 357         plugin_finder->GetPluginMetadata(*group_plugins[0]));
 358     base::string16 group_name = plugin_metadata->name();
 359     std::string group_identifier = plugin_metadata->identifier();
 360     bool group_enabled = false;
 361     bool all_plugins_enabled_by_policy = true;
 362     bool all_plugins_disabled_by_policy = true;
 363     bool all_plugins_managed_by_policy = true;
 364     const WebPluginInfo* active_plugin = NULL;
 365     for (size_t j = 0; j < group_plugins.size(); ++j) {
 366       const WebPluginInfo& group_plugin = *group_plugins[j];
 367
 368       base::DictionaryValue* plugin_file = new base::DictionaryValue();
 369       plugin_file->SetString("name", group_plugin.name);
 370       plugin_file->SetString("description", group_plugin.desc);
 371       plugin_file->SetString("path", group_plugin.path.value());
 372       plugin_file->SetString("version", group_plugin.version);
 373       plugin_file->SetString("type", PluginTypeToString(group_plugin.type));
 374
 375       base::ListValue* mime_types = new base::ListValue();
 376       const std::vector<content::WebPluginMimeType>& plugin_mime_types =
 377           group_plugin.mime_types;
 378       for (size_t k = 0; k < plugin_mime_types.size(); ++k) {
 379         base::DictionaryValue* mime_type = new base::DictionaryValue();
 380         mime_type->SetString("mimeType", plugin_mime_types[k].mime_type);
 381         mime_type->SetString("description", plugin_mime_types[k].description);
 382
 383         base::ListValue* file_extensions = new base::ListValue();
 384         const std::vector<std::string>& mime_file_extensions =
 385             plugin_mime_types[k].file_extensions;
 386         for (size_t l = 0; l < mime_file_extensions.size(); ++l) {
 387           file_extensions->Append(
 388               new base::StringValue(mime_file_extensions[l]));
 389         }
 390         mime_type->Set("fileExtensions", file_extensions);
 391
 392         mime_types->Append(mime_type);
 393       }
 394       plugin_file->Set("mimeTypes", mime_types);
 395
 396       bool plugin_enabled = plugin_prefs->IsPluginEnabled(group_plugin);
 397
 398       if (!active_plugin || (plugin_enabled && !group_enabled))
 399         active_plugin = &group_plugin;
 400       group_enabled = plugin_enabled || group_enabled;
 401
 402       std::string enabled_mode;
 403       PluginPrefs::PolicyStatus plugin_status =
 404           plugin_prefs->PolicyStatusForPlugin(group_plugin.name);
 405       PluginPrefs::PolicyStatus group_status =
 406           plugin_prefs->PolicyStatusForPlugin(group_name);
 407       if (plugin_status == PluginPrefs::POLICY_ENABLED ||
 408           group_status == PluginPrefs::POLICY_ENABLED) {
 409         enabled_mode = "enabledByPolicy";
 410         all_plugins_disabled_by_policy = false;
 411       } else {
 412         all_plugins_enabled_by_policy = false;
 413         if (plugin_status == PluginPrefs::POLICY_DISABLED ||
 414             group_status == PluginPrefs::POLICY_DISABLED) {
 415           enabled_mode = "disabledByPolicy";
 416         } else {
 417           all_plugins_disabled_by_policy = false;
 418           all_plugins_managed_by_policy = false;
 419           if (plugin_enabled) {
 420             enabled_mode = "enabledByUser";
 421           } else {
 422             enabled_mode = "disabledByUser";
 423           }
 424         }
 425       }
 426       plugin_file->SetString("enabledMode", enabled_mode);
 427
 428       plugin_files->Append(plugin_file);
 429     }
 430     base::DictionaryValue* group_data = new base::DictionaryValue();
 431
 432     group_data->Set("plugin_files", plugin_files);
 433     group_data->SetString("name", group_name);
 434     group_data->SetString("id", group_identifier);
 435     group_data->SetString("description", active_plugin->desc);
 436     group_data->SetString("version", active_plugin->version);
 437
 438 #if defined(ENABLE_PLUGIN_INSTALLATION)
 439     bool out_of_date = plugin_metadata->GetSecurityStatus(*active_plugin) ==
 440         PluginMetadata::SECURITY_STATUS_OUT_OF_DATE;
 441     group_data->SetBoolean("critical", out_of_date);
 442     group_data->SetString("update_url", plugin_metadata->plugin_url().spec());
 443 #endif
 444
 445     std::string enabled_mode;
 446     if (all_plugins_enabled_by_policy) {
 447       enabled_mode = "enabledByPolicy";
 448     } else if (all_plugins_disabled_by_policy) {
 449       enabled_mode = "disabledByPolicy";
 450     } else if (all_plugins_managed_by_policy) {
 451       enabled_mode = "managedByPolicy";
 452     } else if (group_enabled) {
 453       enabled_mode = "enabledByUser";
 454     } else {
 455       enabled_mode = "disabledByUser";
 456     }
 457     group_data->SetString("enabledMode", enabled_mode);
 458
 459     bool always_allowed = false;
 460     if (group_enabled) {
 461       const base::DictionaryValue* whitelist =
 462           profile->GetPrefs()->GetDictionary(
 463               prefs::kContentSettingsPluginWhitelist);
 464       whitelist->GetBoolean(group_identifier, &always_allowed);
 465     }
 466     group_data->SetBoolean("alwaysAllowed", always_allowed);
 467
 468     plugin_groups_data->Append(group_data);
 469   }
 470   base::DictionaryValue results;
 471   results.Set("plugins", plugin_groups_data);
 472   web_ui()->CallJavascriptFunction("returnPluginsData", results);
 473 }
 474
 475 }  // namespace
 476
 477 ///////////////////////////////////////////////////////////////////////////////
 478 //
 479 // PluginsUI
 480 //
 481 ///////////////////////////////////////////////////////////////////////////////
 482
 483 PluginsUI::PluginsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
 484   web_ui->AddMessageHandler(new PluginsDOMHandler());
 485
 486   // Set up the chrome://plugins/ source.
 487   Profile* profile = Profile::FromWebUI(web_ui);
 488   content::WebUIDataSource::Add(profile, CreatePluginsUIHTMLSource(profile));
 489 }
 490
 491 // static
 492 base::RefCountedMemory* PluginsUI::GetFaviconResourceBytes(
 493       ui::ScaleFactor scale_factor) {
 494   return ResourceBundle::GetSharedInstance().
 495       LoadDataResourceBytesForScale(IDR_PLUGINS_FAVICON, scale_factor);
 496 }
 497
 498 // static
 499 void PluginsUI::RegisterProfilePrefs(
 500     user_prefs::PrefRegistrySyncable* registry) {
 501   registry->RegisterBooleanPref(
 502       prefs::kPluginsShowDetails,
 503       false,
 504       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 505   registry->RegisterDictionaryPref(
 506       prefs::kContentSettingsPluginWhitelist,
 507       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 508 }