chrome/browser/plugins/plugin_observer.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/plugins/plugin_observer.h"
   6
   7 #include "base/auto_reset.h"
   8 #include "base/bind.h"
   9 #include "base/metrics/histogram.h"
  10 #include "base/process_util.h"
  11 #include "base/stl_util.h"
  12 #include "base/utf_string_conversions.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/content_settings/host_content_settings_map.h"
  15 #include "chrome/browser/infobars/confirm_infobar_delegate.h"
  16 #include "chrome/browser/infobars/infobar_service.h"
  17 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
  18 #include "chrome/browser/lifetime/application_lifetime.h"
  19 #include "chrome/browser/metrics/metrics_service.h"
  20 #include "chrome/browser/plugins/plugin_finder.h"
  21 #include "chrome/browser/plugins/plugin_infobar_delegates.h"
  22 #include "chrome/browser/profiles/profile.h"
  23 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
  24 #include "chrome/common/render_messages.h"
  25 #include "chrome/common/url_constants.h"
  26 #include "content/public/browser/plugin_service.h"
  27 #include "content/public/browser/render_view_host.h"
  28 #include "content/public/browser/web_contents.h"
  29 #include "content/public/browser/web_contents_delegate.h"
  30 #include "grit/generated_resources.h"
  31 #include "grit/theme_resources.h"
  32 #include "ui/base/l10n/l10n_util.h"
  33 #include "ui/base/resource/resource_bundle.h"
  34 #include "webkit/plugins/webplugininfo.h"
  35
  36 #if defined(ENABLE_PLUGIN_INSTALLATION)
  37 #if defined(OS_WIN)
  38 #include "base/win/metro.h"
  39 #endif
  40 #include "chrome/browser/plugins/plugin_installer.h"
  41 #include "chrome/browser/plugins/plugin_installer_observer.h"
  42 #include "chrome/browser/ui/tab_modal_confirm_dialog_delegate.h"
  43 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
  44
  45 using content::OpenURLParams;
  46 using content::PluginService;
  47 using content::Referrer;
  48 using content::WebContents;
  49
  50 DEFINE_WEB_CONTENTS_USER_DATA_KEY(PluginObserver);
  51
  52 namespace {
  53
  54 #if defined(ENABLE_PLUGIN_INSTALLATION)
  55
  56 // ConfirmInstallDialogDelegate ------------------------------------------------
  57
  58 class ConfirmInstallDialogDelegate : public TabModalConfirmDialogDelegate,
  59                                      public WeakPluginInstallerObserver {
  60  public:
  61   ConfirmInstallDialogDelegate(content::WebContents* web_contents,
  62                                PluginInstaller* installer,
  63                                scoped_ptr<PluginMetadata> plugin_metadata);
  64
  65   // TabModalConfirmDialogDelegate methods:
  66   virtual string16 GetTitle() OVERRIDE;
  67   virtual string16 GetMessage() OVERRIDE;
  68   virtual string16 GetAcceptButtonTitle() OVERRIDE;
  69   virtual void OnAccepted() OVERRIDE;
  70   virtual void OnCanceled() OVERRIDE;
  71
  72   // WeakPluginInstallerObserver methods:
  73   virtual void DownloadStarted() OVERRIDE;
  74   virtual void OnlyWeakObserversLeft() OVERRIDE;
  75
  76  private:
  77   content::WebContents* web_contents_;
  78   scoped_ptr<PluginMetadata> plugin_metadata_;
  79 };
  80
  81 ConfirmInstallDialogDelegate::ConfirmInstallDialogDelegate(
  82     content::WebContents* web_contents,
  83     PluginInstaller* installer,
  84     scoped_ptr<PluginMetadata> plugin_metadata)
  85     : TabModalConfirmDialogDelegate(web_contents),
  86       WeakPluginInstallerObserver(installer),
  87       web_contents_(web_contents),
  88       plugin_metadata_(plugin_metadata.Pass()) {
  89 }
  90
  91 string16 ConfirmInstallDialogDelegate::GetTitle() {
  92   return l10n_util::GetStringFUTF16(
  93       IDS_PLUGIN_CONFIRM_INSTALL_DIALOG_TITLE, plugin_metadata_->name());
  94 }
  95
  96 string16 ConfirmInstallDialogDelegate::GetMessage() {
  97   return l10n_util::GetStringFUTF16(IDS_PLUGIN_CONFIRM_INSTALL_DIALOG_MSG,
  98                                     plugin_metadata_->name());
  99 }
 100
 101 string16 ConfirmInstallDialogDelegate::GetAcceptButtonTitle() {
 102   return l10n_util::GetStringUTF16(
 103       IDS_PLUGIN_CONFIRM_INSTALL_DIALOG_ACCEPT_BUTTON);
 104 }
 105
 106 void ConfirmInstallDialogDelegate::OnAccepted() {
 107   installer()->StartInstalling(plugin_metadata_->plugin_url(), web_contents_);
 108 }
 109
 110 void ConfirmInstallDialogDelegate::OnCanceled() {
 111 }
 112
 113 void ConfirmInstallDialogDelegate::DownloadStarted() {
 114   Cancel();
 115 }
 116
 117 void ConfirmInstallDialogDelegate::OnlyWeakObserversLeft() {
 118   Cancel();
 119 }
 120 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 121
 122 }  // namespace
 123
 124 // PluginObserver -------------------------------------------------------------
 125
 126 #if defined(ENABLE_PLUGIN_INSTALLATION)
 127 class PluginObserver::PluginPlaceholderHost : public PluginInstallerObserver {
 128  public:
 129   PluginPlaceholderHost(PluginObserver* observer,
 130                         int routing_id,
 131                         string16 plugin_name,
 132                         PluginInstaller* installer)
 133       : PluginInstallerObserver(installer),
 134         observer_(observer),
 135         routing_id_(routing_id) {
 136     DCHECK(installer);
 137     switch (installer->state()) {
 138       case PluginInstaller::INSTALLER_STATE_IDLE: {
 139         observer->Send(new ChromeViewMsg_FoundMissingPlugin(routing_id_,
 140                                                             plugin_name));
 141         break;
 142       }
 143       case PluginInstaller::INSTALLER_STATE_DOWNLOADING: {
 144         DownloadStarted();
 145         break;
 146       }
 147     }
 148   }
 149
 150   // PluginInstallerObserver methods:
 151   virtual void DownloadStarted() OVERRIDE {
 152     observer_->Send(new ChromeViewMsg_StartedDownloadingPlugin(routing_id_));
 153   }
 154
 155   virtual void DownloadError(const std::string& msg) OVERRIDE {
 156     observer_->Send(new ChromeViewMsg_ErrorDownloadingPlugin(routing_id_, msg));
 157   }
 158
 159   virtual void DownloadCancelled() OVERRIDE {
 160     observer_->Send(new ChromeViewMsg_CancelledDownloadingPlugin(routing_id_));
 161   }
 162
 163   virtual void DownloadFinished() OVERRIDE {
 164     observer_->Send(new ChromeViewMsg_FinishedDownloadingPlugin(routing_id_));
 165   }
 166
 167  private:
 168   // Weak pointer; owns us.
 169   PluginObserver* observer_;
 170
 171   int routing_id_;
 172 };
 173 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 174
 175 PluginObserver::PluginObserver(content::WebContents* web_contents)
 176     : content::WebContentsObserver(web_contents),
 177       ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 178 }
 179
 180 PluginObserver::~PluginObserver() {
 181 #if defined(ENABLE_PLUGIN_INSTALLATION)
 182   STLDeleteValues(&plugin_placeholders_);
 183 #endif
 184 }
 185
 186 void PluginObserver::PluginCrashed(const base::FilePath& plugin_path,
 187                                    base::ProcessId plugin_pid) {
 188   DCHECK(!plugin_path.value().empty());
 189
 190   string16 plugin_name =
 191       PluginService::GetInstance()->GetPluginDisplayNameByPath(plugin_path);
 192   string16 infobar_text;
 193 #if defined(OS_WIN)
 194   // Find out whether the plugin process is still alive.
 195   // Note: Although the chances are slim, it is possible that after the plugin
 196   // process died, |plugin_pid| has been reused by a new process. The
 197   // consequence is that we will display |IDS_PLUGIN_DISCONNECTED_PROMPT| rather
 198   // than |IDS_PLUGIN_CRASHED_PROMPT| to the user, which seems acceptable.
 199   base::ProcessHandle plugin_handle = base::kNullProcessHandle;
 200   bool open_result = base::OpenProcessHandleWithAccess(
 201       plugin_pid, PROCESS_QUERY_INFORMATION | SYNCHRONIZE, &plugin_handle);
 202   bool is_running = false;
 203   if (open_result) {
 204     is_running = base::GetTerminationStatus(plugin_handle, NULL) ==
 205         base::TERMINATION_STATUS_STILL_RUNNING;
 206     base::CloseProcessHandle(plugin_handle);
 207   }
 208
 209   if (is_running) {
 210     infobar_text = l10n_util::GetStringFUTF16(IDS_PLUGIN_DISCONNECTED_PROMPT,
 211                                               plugin_name);
 212     UMA_HISTOGRAM_COUNTS("Plugin.ShowDisconnectedInfobar", 1);
 213   } else {
 214     infobar_text = l10n_util::GetStringFUTF16(IDS_PLUGIN_CRASHED_PROMPT,
 215                                               plugin_name);
 216     UMA_HISTOGRAM_COUNTS("Plugin.ShowCrashedInfobar", 1);
 217   }
 218 #else
 219   // Calling the POSIX version of base::GetTerminationStatus() may affect other
 220   // code which is interested in the process termination status. (Please see the
 221   // comment of the function.) Therefore, a better way is needed to distinguish
 222   // disconnections from crashes.
 223   infobar_text = l10n_util::GetStringFUTF16(IDS_PLUGIN_CRASHED_PROMPT,
 224                                             plugin_name);
 225   UMA_HISTOGRAM_COUNTS("Plugin.ShowCrashedInfobar", 1);
 226 #endif
 227
 228   gfx::Image* icon = &ResourceBundle::GetSharedInstance().GetNativeImageNamed(
 229       IDR_INFOBAR_PLUGIN_CRASHED);
 230   SimpleAlertInfoBarDelegate::Create(
 231       InfoBarService::FromWebContents(web_contents()), icon, infobar_text,
 232       true);
 233 }
 234
 235 bool PluginObserver::OnMessageReceived(const IPC::Message& message) {
 236   IPC_BEGIN_MESSAGE_MAP(PluginObserver, message)
 237     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_BlockedOutdatedPlugin,
 238                         OnBlockedOutdatedPlugin)
 239     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_BlockedUnauthorizedPlugin,
 240                         OnBlockedUnauthorizedPlugin)
 241 #if defined(ENABLE_PLUGIN_INSTALLATION)
 242     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_FindMissingPlugin,
 243                         OnFindMissingPlugin)
 244     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RemovePluginPlaceholderHost,
 245                         OnRemovePluginPlaceholderHost)
 246 #endif
 247     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_OpenAboutPlugins,
 248                         OnOpenAboutPlugins)
 249     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_CouldNotLoadPlugin,
 250                         OnCouldNotLoadPlugin)
 251     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_NPAPINotSupported,
 252                         OnNPAPINotSupported)
 253
 254     IPC_MESSAGE_UNHANDLED(return false)
 255   IPC_END_MESSAGE_MAP()
 256
 257   return true;
 258 }
 259
 260 void PluginObserver::OnBlockedUnauthorizedPlugin(
 261     const string16& name,
 262     const std::string& identifier) {
 263   UnauthorizedPluginInfoBarDelegate::Create(
 264       InfoBarService::FromWebContents(web_contents()),
 265       Profile::FromBrowserContext(web_contents()->GetBrowserContext())->
 266           GetHostContentSettingsMap(),
 267       name, identifier);
 268 }
 269
 270 void PluginObserver::OnBlockedOutdatedPlugin(int placeholder_id,
 271                                              const std::string& identifier) {
 272 #if defined(ENABLE_PLUGIN_INSTALLATION)
 273   PluginFinder* finder = PluginFinder::GetInstance();
 274   // Find plugin to update.
 275   PluginInstaller* installer = NULL;
 276   scoped_ptr<PluginMetadata> plugin;
 277   if (!finder->FindPluginWithIdentifier(identifier, &installer, &plugin)) {
 278     NOTREACHED();
 279     return;
 280   }
 281
 282   plugin_placeholders_[placeholder_id] =
 283       new PluginPlaceholderHost(this, placeholder_id,
 284                                 plugin->name(), installer);
 285   OutdatedPluginInfoBarDelegate::Create(
 286       InfoBarService::FromWebContents(web_contents()), installer,
 287       plugin.Pass());
 288 #else
 289   // If we don't support third-party plug-in installation, we shouldn't have
 290   // outdated plug-ins.
 291   NOTREACHED();
 292 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 293 }
 294
 295 #if defined(ENABLE_PLUGIN_INSTALLATION)
 296 void PluginObserver::OnFindMissingPlugin(int placeholder_id,
 297                                          const std::string& mime_type) {
 298   std::string lang = "en-US";  // Oh yes.
 299   scoped_ptr<PluginMetadata> plugin_metadata;
 300   PluginInstaller* installer = NULL;
 301   bool found_plugin = PluginFinder::GetInstance()->FindPlugin(
 302       mime_type, lang, &installer, &plugin_metadata);
 303   if (!found_plugin) {
 304     Send(new ChromeViewMsg_DidNotFindMissingPlugin(placeholder_id));
 305     return;
 306   }
 307   DCHECK(installer);
 308   DCHECK(plugin_metadata.get());
 309
 310   plugin_placeholders_[placeholder_id] =
 311       new PluginPlaceholderHost(this, placeholder_id,
 312                                 plugin_metadata->name(),
 313                                 installer);
 314   PluginInstallerInfoBarDelegate::Create(
 315       InfoBarService::FromWebContents(web_contents()), installer,
 316       plugin_metadata.Pass(),
 317       base::Bind(&PluginObserver::InstallMissingPlugin,
 318                  weak_ptr_factory_.GetWeakPtr(), installer));
 319 }
 320
 321 void PluginObserver::InstallMissingPlugin(
 322     PluginInstaller* installer,
 323     const PluginMetadata* plugin_metadata) {
 324   if (plugin_metadata->url_for_display()) {
 325     installer->OpenDownloadURL(plugin_metadata->plugin_url(), web_contents());
 326   } else {
 327     TabModalConfirmDialog::Create(
 328         new ConfirmInstallDialogDelegate(
 329             web_contents(), installer, plugin_metadata->Clone()),
 330         web_contents());
 331   }
 332 }
 333
 334 void PluginObserver::OnRemovePluginPlaceholderHost(int placeholder_id) {
 335   std::map<int, PluginPlaceholderHost*>::iterator it =
 336       plugin_placeholders_.find(placeholder_id);
 337   if (it == plugin_placeholders_.end()) {
 338     NOTREACHED();
 339     return;
 340   }
 341   delete it->second;
 342   plugin_placeholders_.erase(it);
 343 }
 344 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 345
 346 void PluginObserver::OnOpenAboutPlugins() {
 347   web_contents()->OpenURL(OpenURLParams(
 348       GURL(chrome::kAboutPluginsURL),
 349       content::Referrer(web_contents()->GetURL(),
 350                         WebKit::WebReferrerPolicyDefault),
 351       NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_AUTO_BOOKMARK, false));
 352 }
 353
 354 void PluginObserver::OnCouldNotLoadPlugin(const base::FilePath& plugin_path) {
 355   g_browser_process->metrics_service()->LogPluginLoadingError(plugin_path);
 356   string16 plugin_name =
 357       PluginService::GetInstance()->GetPluginDisplayNameByPath(plugin_path);
 358   SimpleAlertInfoBarDelegate::Create(
 359       InfoBarService::FromWebContents(web_contents()),
 360       &ResourceBundle::GetSharedInstance().GetNativeImageNamed(
 361           IDR_INFOBAR_PLUGIN_CRASHED),
 362       l10n_util::GetStringFUTF16(IDS_PLUGIN_INITIALIZATION_ERROR_PROMPT,
 363                                  plugin_name),
 364       true  /* auto_expire */);
 365 }
 366
 367 void PluginObserver::OnNPAPINotSupported(const std::string& identifier) {
 368 #if defined(OS_WIN) && defined(ENABLE_PLUGIN_INSTALLATION)
 369   DCHECK(base::win::IsMetroProcess());
 370   Profile* profile =
 371       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
 372   if (profile->IsOffTheRecord())
 373     return;
 374   HostContentSettingsMap* content_settings =
 375       profile->GetHostContentSettingsMap();
 376   if (content_settings->GetContentSetting(
 377       web_contents()->GetURL(),
 378       web_contents()->GetURL(),
 379       CONTENT_SETTINGS_TYPE_METRO_SWITCH_TO_DESKTOP,
 380       std::string()) == CONTENT_SETTING_BLOCK)
 381     return;
 382
 383   scoped_ptr<PluginMetadata> plugin;
 384   if (!PluginFinder::GetInstance()->FindPluginWithIdentifier(
 385           identifier, NULL, &plugin)) {
 386     NOTREACHED();
 387     return;
 388   }
 389
 390   PluginMetroModeInfoBarDelegate::Create(
 391       InfoBarService::FromWebContents(web_contents()),
 392       PluginMetroModeInfoBarDelegate::DESKTOP_MODE_REQUIRED, plugin->name());
 393 #else
 394   NOTREACHED();
 395 #endif
 396 }