// 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/profile.h"

#include "app/resource_bundle.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/scoped_ptr.h"
#include "base/string_util.h"
#include "chrome/browser/background_contents_service.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_blob_storage_context.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/download/download_manager.h"
#include "chrome/browser/file_system/file_system_host_context.h"
#include "chrome/browser/extensions/extension_message_service.h"
#include "chrome/browser/extensions/extension_process_manager.h"
#include "chrome/browser/find_bar_state.h"
#include "chrome/browser/in_process_webkit/webkit_context.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/notifications/desktop_notification_service.h"
#include "chrome/browser/ssl/ssl_host_state.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/browser/themes/browser_theme_provider.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/json_pref_store.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/render_messages.h"
#include "grit/browser_resources.h"
#include "grit/locale_settings.h"
#include "net/base/transport_security_state.h"
#include "webkit/database/database_tracker.h"
#if defined(TOOLKIT_USES_GTK)
#include "chrome/browser/gtk/gtk_theme_provider.h"
#endif

#if defined(OS_WIN)
#include "chrome/browser/password_manager/password_store_win.h"
#elif defined(OS_MACOSX)
#include "chrome/browser/keychain_mac.h"
#include "chrome/browser/password_manager/password_store_mac.h"
#elif defined(OS_POSIX) && !defined(OS_CHROMEOS)
#include "chrome/browser/password_manager/native_backend_gnome_x.h"
#include "chrome/browser/password_manager/native_backend_kwallet_x.h"
#include "chrome/browser/password_manager/password_store_x.h"
#endif

using base::Time;
using base::TimeDelta;

// A pointer to the request context for the default profile.  See comments on
// Profile::GetDefaultRequestContext.
URLRequestContextGetter* Profile::default_request_context_;

namespace {

// FIXME: Duplicated in profile_impl.cc
void CleanupRequestContext(ChromeURLRequestContextGetter* context) {
  if (context)
    context->CleanupOnUIThread();
}

} // namespace

// static
const ProfileId Profile::InvalidProfileId = static_cast<ProfileId>(0);

// static
void Profile::RegisterUserPrefs(PrefService* prefs) {
  prefs->RegisterBooleanPref(prefs::kSearchSuggestEnabled, true);
  prefs->RegisterBooleanPref(prefs::kSessionExitedCleanly, true);
  prefs->RegisterBooleanPref(prefs::kSafeBrowsingEnabled, true);
  // TODO(estade): IDS_SPELLCHECK_DICTIONARY should be an ASCII string.
  prefs->RegisterLocalizedStringPref(prefs::kSpellCheckDictionary,
      IDS_SPELLCHECK_DICTIONARY);
  prefs->RegisterBooleanPref(prefs::kEnableSpellCheck, true);
  prefs->RegisterBooleanPref(prefs::kEnableAutoSpellCorrect, true);
#if defined(TOOLKIT_USES_GTK)
  prefs->RegisterBooleanPref(prefs::kUsesSystemTheme,
                             GtkThemeProvider::DefaultUsesSystemTheme());
#endif
  prefs->RegisterFilePathPref(prefs::kCurrentThemePackFilename, FilePath());
  prefs->RegisterStringPref(prefs::kCurrentThemeID,
                            BrowserThemeProvider::kDefaultThemeID);
  prefs->RegisterDictionaryPref(prefs::kCurrentThemeImages);
  prefs->RegisterDictionaryPref(prefs::kCurrentThemeColors);
  prefs->RegisterDictionaryPref(prefs::kCurrentThemeTints);
  prefs->RegisterDictionaryPref(prefs::kCurrentThemeDisplayProperties);
  prefs->RegisterBooleanPref(prefs::kDisableExtensions, false);
  prefs->RegisterStringPref(prefs::kSelectFileLastDirectory, "");
}

// static
URLRequestContextGetter* Profile::GetDefaultRequestContext() {
  return default_request_context_;
}

bool Profile::IsSyncAccessible() {
  ProfileSyncService* syncService = GetProfileSyncService();
  return syncService && !syncService->IsManaged();
}

////////////////////////////////////////////////////////////////////////////////
//
// OffTheRecordProfileImpl is a profile subclass that wraps an existing profile
// to make it suitable for the off the record mode.
//
////////////////////////////////////////////////////////////////////////////////
class OffTheRecordProfileImpl : public Profile,
                                public NotificationObserver {
 public:
  explicit OffTheRecordProfileImpl(Profile* real_profile)
      : profile_(real_profile),
        start_time_(Time::Now()) {
    request_context_ = ChromeURLRequestContextGetter::CreateOffTheRecord(this);
    extension_process_manager_.reset(ExtensionProcessManager::Create(this));

    // Register for browser close notifications so we can detect when the last
    // off-the-record window is closed, in which case we can clean our states
    // (cookies, downloads...).
    registrar_.Add(this, NotificationType::BROWSER_CLOSED,
                   NotificationService::AllSources());
    background_contents_service_.reset(
        new BackgroundContentsService(this, CommandLine::ForCurrentProcess()));
  }

  virtual ~OffTheRecordProfileImpl() {
    NotificationService::current()->Notify(NotificationType::PROFILE_DESTROYED,
                                           Source<Profile>(this),
                                           NotificationService::NoDetails());
    CleanupRequestContext(request_context_);
    CleanupRequestContext(extensions_request_context_);

    // Clean up all DB files/directories
    ChromeThread::PostTask(
        ChromeThread::FILE, FROM_HERE,
        NewRunnableMethod(
            db_tracker_.get(),
            &webkit_database::DatabaseTracker::DeleteIncognitoDBDirectory));
  }

  virtual ProfileId GetRuntimeId() {
    return reinterpret_cast<ProfileId>(this);
  }

  virtual FilePath GetPath() { return profile_->GetPath(); }

  virtual bool IsOffTheRecord() {
    return true;
  }

  virtual Profile* GetOffTheRecordProfile() {
    return this;
  }

  virtual void DestroyOffTheRecordProfile() {
    // Suicide is bad!
    NOTREACHED();
  }

  virtual bool HasOffTheRecordProfile() {
    return true;
  }

  virtual Profile* GetOriginalProfile() {
    return profile_;
  }

  virtual ChromeAppCacheService* GetAppCacheService() {
    if (!appcache_service_) {
      appcache_service_ = new ChromeAppCacheService;
      ChromeThread::PostTask(
          ChromeThread::IO, FROM_HERE,
          NewRunnableMethod(appcache_service_.get(),
                            &ChromeAppCacheService::InitializeOnIOThread,
                            GetPath(), IsOffTheRecord(),
                            make_scoped_refptr(GetHostContentSettingsMap())));
    }
    return appcache_service_;
  }

  virtual webkit_database::DatabaseTracker* GetDatabaseTracker() {
    if (!db_tracker_) {
      db_tracker_ = new webkit_database::DatabaseTracker(
          GetPath(), IsOffTheRecord());
    }
    return db_tracker_;
  }

  virtual VisitedLinkMaster* GetVisitedLinkMaster() {
    // We don't provide access to the VisitedLinkMaster when we're OffTheRecord
    // because we don't want to leak the sites that the user has visited before.
    return NULL;
  }

  virtual ExtensionsService* GetExtensionsService() {
    return GetOriginalProfile()->GetExtensionsService();
  }

  virtual BackgroundContentsService* GetBackgroundContentsService() {
    return background_contents_service_.get();
  }

  virtual StatusTray* GetStatusTray() {
    return GetOriginalProfile()->GetStatusTray();
  }

  virtual UserScriptMaster* GetUserScriptMaster() {
    return GetOriginalProfile()->GetUserScriptMaster();
  }

  virtual ExtensionDevToolsManager* GetExtensionDevToolsManager() {
    // TODO(mpcomplete): figure out whether we should return the original
    // profile's version.
    return NULL;
  }

  virtual ExtensionProcessManager* GetExtensionProcessManager() {
    return extension_process_manager_.get();
  }

  virtual ExtensionMessageService* GetExtensionMessageService() {
    return GetOriginalProfile()->GetExtensionMessageService();
  }

  virtual SSLHostState* GetSSLHostState() {
    if (!ssl_host_state_.get())
      ssl_host_state_.reset(new SSLHostState());

    DCHECK(ssl_host_state_->CalledOnValidThread());
    return ssl_host_state_.get();
  }

  virtual net::TransportSecurityState* GetTransportSecurityState() {
    if (!transport_security_state_.get())
      transport_security_state_ = new net::TransportSecurityState();

    return transport_security_state_.get();
  }

  virtual HistoryService* GetHistoryService(ServiceAccessType sat) {
    if (sat == EXPLICIT_ACCESS)
      return profile_->GetHistoryService(sat);

    NOTREACHED() << "This profile is OffTheRecord";
    return NULL;
  }

  virtual HistoryService* GetHistoryServiceWithoutCreating() {
    return profile_->GetHistoryServiceWithoutCreating();
  }

  virtual FaviconService* GetFaviconService(ServiceAccessType sat) {
    if (sat == EXPLICIT_ACCESS)
      return profile_->GetFaviconService(sat);

    NOTREACHED() << "This profile is OffTheRecord";
    return NULL;
  }

  virtual AutocompleteClassifier* GetAutocompleteClassifier() {
    return profile_->GetAutocompleteClassifier();
  }

  virtual WebDataService* GetWebDataService(ServiceAccessType sat) {
    if (sat == EXPLICIT_ACCESS)
      return profile_->GetWebDataService(sat);

    NOTREACHED() << "This profile is OffTheRecord";
    return NULL;
  }

  virtual WebDataService* GetWebDataServiceWithoutCreating() {
    return profile_->GetWebDataServiceWithoutCreating();
  }

  virtual PasswordStore* GetPasswordStore(ServiceAccessType sat) {
    if (sat == EXPLICIT_ACCESS)
      return profile_->GetPasswordStore(sat);

    NOTREACHED() << "This profile is OffTheRecord";
    return NULL;
  }

  virtual PrefService* GetPrefs() {
    return profile_->GetPrefs();
  }

  virtual TemplateURLModel* GetTemplateURLModel() {
    return profile_->GetTemplateURLModel();
  }

  virtual TemplateURLFetcher* GetTemplateURLFetcher() {
    return profile_->GetTemplateURLFetcher();
  }

  virtual DownloadManager* GetDownloadManager() {
    if (!download_manager_.get()) {
      scoped_refptr<DownloadManager> dlm(
          new DownloadManager(g_browser_process->download_status_updater()));
      dlm->Init(this);
      download_manager_.swap(dlm);
    }
    return download_manager_.get();
  }

  virtual bool HasCreatedDownloadManager() const {
    return (download_manager_.get() != NULL);
  }

  virtual PersonalDataManager* GetPersonalDataManager() {
    return NULL;
  }

  virtual FileSystemHostContext* GetFileSystemHostContext() {
    if (!file_system_host_context_)
      file_system_host_context_ = new FileSystemHostContext(
          GetPath(), IsOffTheRecord());
    DCHECK(file_system_host_context_.get());
    return file_system_host_context_.get();
  }

  virtual void InitThemes() {
    profile_->InitThemes();
  }

  virtual void SetTheme(Extension* extension) {
    profile_->SetTheme(extension);
  }

  virtual void SetNativeTheme() {
    profile_->SetNativeTheme();
  }

  virtual void ClearTheme() {
    profile_->ClearTheme();
  }

  virtual Extension* GetTheme() {
    return profile_->GetTheme();
  }

  virtual BrowserThemeProvider* GetThemeProvider() {
    return profile_->GetThemeProvider();
  }

  virtual URLRequestContextGetter* GetRequestContext() {
    return request_context_;
  }

  virtual URLRequestContextGetter* GetRequestContextForMedia() {
    // In OTR mode, media request context is the same as the original one.
    return request_context_;
  }

  URLRequestContextGetter* GetRequestContextForExtensions() {
    if (!extensions_request_context_) {
      extensions_request_context_ =
          ChromeURLRequestContextGetter::CreateOffTheRecordForExtensions(this);
    }

    return extensions_request_context_;
  }

  virtual net::SSLConfigService* GetSSLConfigService() {
    return profile_->GetSSLConfigService();
  }

  virtual HostContentSettingsMap* GetHostContentSettingsMap() {
    // Retrieve the host content settings map of the parent profile in order to
    // ensure the preferences have been migrated.
    profile_->GetHostContentSettingsMap();
    if (!host_content_settings_map_.get())
      host_content_settings_map_ = new HostContentSettingsMap(this);
    return host_content_settings_map_.get();
  }

  virtual HostZoomMap* GetHostZoomMap() {
    if (!host_zoom_map_)
      host_zoom_map_ = new HostZoomMap(this);
    return host_zoom_map_.get();
  }

  virtual GeolocationContentSettingsMap* GetGeolocationContentSettingsMap() {
    return profile_->GetGeolocationContentSettingsMap();
  }

  virtual GeolocationPermissionContext* GetGeolocationPermissionContext() {
    return profile_->GetGeolocationPermissionContext();
  }

  virtual UserStyleSheetWatcher* GetUserStyleSheetWatcher() {
    return profile_->GetUserStyleSheetWatcher();
  }

  virtual FindBarState* GetFindBarState() {
    if (!find_bar_state_.get())
      find_bar_state_.reset(new FindBarState());
    return find_bar_state_.get();
  }

  virtual SessionService* GetSessionService() {
    // Don't save any sessions when off the record.
    return NULL;
  }

  virtual void ShutdownSessionService() {
    // We don't allow a session service, nothing to do.
  }

  virtual bool HasSessionService() const {
    // We never have a session service.
    return false;
  }

  virtual bool DidLastSessionExitCleanly() {
    return profile_->DidLastSessionExitCleanly();
  }

  virtual BookmarkModel* GetBookmarkModel() {
    return profile_->GetBookmarkModel();
  }

  virtual DesktopNotificationService* GetDesktopNotificationService() {
    if (!desktop_notification_service_.get()) {
      desktop_notification_service_.reset(new DesktopNotificationService(
          this, g_browser_process->notification_ui_manager()));
    }
    return desktop_notification_service_.get();
  }

  virtual TokenService* GetTokenService() {
    return NULL;
  }

  virtual ProfileSyncService* GetProfileSyncService() {
    return NULL;
  }

  virtual ProfileSyncService* GetProfileSyncService(
      const std::string& cros_user) {
    return NULL;
  }

  virtual CloudPrintProxyService* GetCloudPrintProxyService() {
    return NULL;
  }

  virtual bool IsSameProfile(Profile* profile) {
    return (profile == this) || (profile == profile_);
  }

  virtual Time GetStartTime() const {
    return start_time_;
  }

  virtual TabRestoreService* GetTabRestoreService() {
    return NULL;
  }

  virtual void ResetTabRestoreService() {
  }

  virtual SpellCheckHost* GetSpellCheckHost() {
    return profile_->GetSpellCheckHost();
  }

  virtual void ReinitializeSpellCheckHost(bool force) {
    profile_->ReinitializeSpellCheckHost(force);
  }

  virtual WebKitContext* GetWebKitContext() {
    if (!webkit_context_.get())
      webkit_context_ = new WebKitContext(this);
    DCHECK(webkit_context_.get());
    return webkit_context_.get();
  }

  virtual history::TopSites* GetTopSites() {
    return NULL;
  }

  virtual void MarkAsCleanShutdown() {
  }

  virtual void InitExtensions() {
    NOTREACHED();
  }

  virtual void InitWebResources() {
    NOTREACHED();
  }

  virtual NTPResourceCache* GetNTPResourceCache() {
    // Just return the real profile resource cache.
    return profile_->GetNTPResourceCache();
  }

  virtual FilePath last_selected_directory() {
    const FilePath& directory = last_selected_directory_;
    if (directory.empty()) {
      return profile_->last_selected_directory();
    }
    return directory;
  }

  virtual void set_last_selected_directory(const FilePath& path) {
    last_selected_directory_ = path;
  }

#if defined(OS_CHROMEOS)
  virtual chromeos::ProxyConfigServiceImpl*
      GetChromeOSProxyConfigServiceImpl() {
    return profile_->GetChromeOSProxyConfigServiceImpl();
  }
#endif  // defined(OS_CHROMEOS)

  virtual void ExitedOffTheRecordMode() {
    // DownloadManager is lazily created, so check before accessing it.
    if (download_manager_.get()) {
      // Drop our download manager so we forget about all the downloads made
      // in off-the-record mode.
      download_manager_->Shutdown();
      download_manager_ = NULL;
    }
  }

  virtual void Observe(NotificationType type,
                       const NotificationSource& source,
                       const NotificationDetails& details) {
    DCHECK_EQ(NotificationType::BROWSER_CLOSED, type.value);
    // We are only interested in OTR browser closing.
    if (Source<Browser>(source)->profile() != this)
      return;

    // Let's check if we still have an Off The Record window opened.
    // Note that we check against 1 as this notification is sent before the
    // browser window is actually removed from the list.
    if (BrowserList::GetBrowserCount(this) <= 1)
      ExitedOffTheRecordMode();
  }

  virtual ChromeBlobStorageContext* GetBlobStorageContext() {
    if (!blob_storage_context_) {
      blob_storage_context_ = new ChromeBlobStorageContext();
      ChromeThread::PostTask(
          ChromeThread::IO, FROM_HERE,
          NewRunnableMethod(
              blob_storage_context_.get(),
              &ChromeBlobStorageContext::InitializeOnIOThread));
    }
    return blob_storage_context_;
  }

 private:
  NotificationRegistrar registrar_;

  // The real underlying profile.
  Profile* profile_;

  scoped_ptr<ExtensionProcessManager> extension_process_manager_;

  // The context to use for requests made from this OTR session.
  scoped_refptr<ChromeURLRequestContextGetter> request_context_;

  // The context to use for requests made by an extension while in OTR mode.
  scoped_refptr<ChromeURLRequestContextGetter> extensions_request_context_;

  // The download manager that only stores downloaded items in memory.
  scoped_refptr<DownloadManager> download_manager_;

  // Use a separate desktop notification service for OTR.
  scoped_ptr<DesktopNotificationService> desktop_notification_service_;

  // We use a non-writable content settings map for OTR.
  scoped_refptr<HostContentSettingsMap> host_content_settings_map_;

  // Use a separate zoom map for OTR.
  scoped_refptr<HostZoomMap> host_zoom_map_;

  // Use a special WebKit context for OTR browsing.
  scoped_refptr<WebKitContext> webkit_context_;

  // We don't want SSLHostState from the OTR profile to leak back to the main
  // profile because then the main profile would learn some of the host names
  // the user visited while OTR.
  scoped_ptr<SSLHostState> ssl_host_state_;

  // Use a separate FindBarState so search terms do not leak back to the main
  // profile.
  scoped_ptr<FindBarState> find_bar_state_;

  // The TransportSecurityState that only stores enabled sites in memory.
  scoped_refptr<net::TransportSecurityState>
      transport_security_state_;

  // Time we were started.
  Time start_time_;

  scoped_refptr<ChromeAppCacheService> appcache_service_;

  // The main database tracker for this profile.
  // Should be used only on the file thread.
  scoped_refptr<webkit_database::DatabaseTracker> db_tracker_;

  FilePath last_selected_directory_;

  // Tracks all BackgroundContents running under this profile.
  scoped_ptr<BackgroundContentsService> background_contents_service_;

  scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;

  // The file_system context for this profile.
  scoped_refptr<FileSystemHostContext> file_system_host_context_;

  DISALLOW_COPY_AND_ASSIGN(OffTheRecordProfileImpl);
};

Profile *Profile::CreateOffTheRecordProfile() {
  return new OffTheRecordProfileImpl(this);
}