chrome/browser/managed_mode/managed_mode_interstitial.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/managed_mode/managed_mode_interstitial.h"
   6
   7 #include "base/i18n/rtl.h"
   8 #include "base/metrics/histogram.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "base/values.h"
  12 #include "chrome/browser/infobars/infobar.h"
  13 #include "chrome/browser/infobars/infobar_delegate.h"
  14 #include "chrome/browser/infobars/infobar_service.h"
  15 #include "chrome/browser/managed_mode/managed_user_service.h"
  16 #include "chrome/browser/managed_mode/managed_user_service_factory.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/common/pref_names.h"
  19 #include "content/public/browser/browser_thread.h"
  20 #include "content/public/browser/interstitial_page.h"
  21 #include "content/public/browser/navigation_controller.h"
  22 #include "content/public/browser/navigation_details.h"
  23 #include "content/public/browser/navigation_entry.h"
  24 #include "content/public/browser/web_contents.h"
  25 #include "content/public/browser/web_ui.h"
  26 #include "grit/browser_resources.h"
  27 #include "grit/generated_resources.h"
  28 #include "net/base/net_util.h"
  29 #include "ui/base/l10n/l10n_util.h"
  30 #include "ui/base/resource/resource_bundle.h"
  31 #include "ui/base/webui/jstemplate_builder.h"
  32 #include "ui/base/webui/web_ui_util.h"
  33
  34 using content::BrowserThread;
  35
  36 ManagedModeInterstitial::ManagedModeInterstitial(
  37     content::WebContents* web_contents,
  38     const GURL& url,
  39     const base::Callback<void(bool)>& callback)
  40     : web_contents_(web_contents),
  41       interstitial_page_(NULL),
  42       url_(url),
  43       callback_(callback) {
  44   if (ShouldProceed()) {
  45     // It can happen that the site was only allowed very recently and the URL
  46     // filter on the IO thread had not been updated yet. Proceed with the
  47     // request without showing the interstitial.
  48     DispatchContinueRequest(true);
  49     delete this;
  50     return;
  51   }
  52
  53   InfoBarService* service = InfoBarService::FromWebContents(web_contents);
  54   if (service) {
  55     // Remove all the infobars which are attached to |web_contents| and for
  56     // which ShouldExpire() returns true.
  57     content::LoadCommittedDetails details;
  58     // |details.is_in_page| is default false, and |details.is_main_frame| is
  59     // default true. This results in is_navigation_to_different_page() returning
  60     // true.
  61     DCHECK(details.is_navigation_to_different_page());
  62     const content::NavigationController& controller =
  63         web_contents->GetController();
  64     details.entry = controller.GetActiveEntry();
  65     if (controller.GetLastCommittedEntry()) {
  66       details.previous_entry_index = controller.GetLastCommittedEntryIndex();
  67       details.previous_url = controller.GetLastCommittedEntry()->GetURL();
  68     }
  69     details.type = content::NAVIGATION_TYPE_NEW_PAGE;
  70     for (int i = service->infobar_count() - 1; i >= 0; --i) {
  71       if (service->infobar_at(i)->delegate()->ShouldExpire(details))
  72         service->RemoveInfoBar(service->infobar_at(i));
  73     }
  74   }
  75
  76   // TODO(bauerb): Extract an observer callback on ManagedUserService for this.
  77   Profile* profile =
  78       Profile::FromBrowserContext(web_contents->GetBrowserContext());
  79   PrefService* prefs = profile->GetPrefs();
  80   pref_change_registrar_.Init(prefs);
  81   pref_change_registrar_.Add(
  82       prefs::kDefaultManagedModeFilteringBehavior,
  83       base::Bind(&ManagedModeInterstitial::OnFilteringPrefsChanged,
  84                  base::Unretained(this)));
  85   pref_change_registrar_.Add(
  86       prefs::kManagedModeManualHosts,
  87       base::Bind(&ManagedModeInterstitial::OnFilteringPrefsChanged,
  88                  base::Unretained(this)));
  89   pref_change_registrar_.Add(
  90       prefs::kManagedModeManualURLs,
  91       base::Bind(&ManagedModeInterstitial::OnFilteringPrefsChanged,
  92                  base::Unretained(this)));
  93
  94   languages_ = prefs->GetString(prefs::kAcceptLanguages);
  95   interstitial_page_ =
  96       content::InterstitialPage::Create(web_contents, true, url_, this);
  97   interstitial_page_->Show();
  98 }
  99
 100 ManagedModeInterstitial::~ManagedModeInterstitial() {}
 101
 102 std::string ManagedModeInterstitial::GetHTMLContents() {
 103   base::DictionaryValue strings;
 104   strings.SetString("blockPageTitle",
 105                     l10n_util::GetStringUTF16(IDS_BLOCK_INTERSTITIAL_TITLE));
 106
 107   Profile* profile =
 108       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
 109   ManagedUserService* managed_user_service =
 110       ManagedUserServiceFactory::GetForProfile(profile);
 111
 112   bool allow_access_requests = managed_user_service->AccessRequestsEnabled();
 113   strings.SetBoolean("allowAccessRequests", allow_access_requests);
 114
 115   base::string16 custodian =
 116       base::UTF8ToUTF16(managed_user_service->GetCustodianName());
 117   strings.SetString(
 118       "blockPageMessage",
 119       allow_access_requests
 120           ? l10n_util::GetStringFUTF16(IDS_BLOCK_INTERSTITIAL_MESSAGE,
 121                                        custodian)
 122           : l10n_util::GetStringUTF16(
 123                 IDS_BLOCK_INTERSTITIAL_MESSAGE_ACCESS_REQUESTS_DISABLED));
 124
 125   strings.SetString("backButton", l10n_util::GetStringUTF16(IDS_BACK_BUTTON));
 126   strings.SetString(
 127       "requestAccessButton",
 128       l10n_util::GetStringUTF16(IDS_BLOCK_INTERSTITIAL_REQUEST_ACCESS_BUTTON));
 129
 130   strings.SetString(
 131       "requestSentMessage",
 132       l10n_util::GetStringFUTF16(IDS_BLOCK_INTERSTITIAL_REQUEST_SENT_MESSAGE,
 133                                  custodian));
 134
 135   webui::SetFontAndTextDirection(&strings);
 136
 137   base::StringPiece html(ResourceBundle::GetSharedInstance().GetRawDataResource(
 138       IDR_MANAGED_MODE_BLOCK_INTERSTITIAL_HTML));
 139
 140   webui::UseVersion2 version;
 141   return webui::GetI18nTemplateHtml(html, &strings);
 142 }
 143
 144 void ManagedModeInterstitial::CommandReceived(const std::string& command) {
 145   // For use in histograms.
 146   enum Commands {
 147     PREVIEW,
 148     BACK,
 149     NTP,
 150     ACCESS_REQUEST,
 151     HISTOGRAM_BOUNDING_VALUE
 152   };
 153
 154   if (command == "\"back\"") {
 155     UMA_HISTOGRAM_ENUMERATION("ManagedMode.BlockingInterstitialCommand",
 156                               BACK,
 157                               HISTOGRAM_BOUNDING_VALUE);
 158     interstitial_page_->DontProceed();
 159     return;
 160   }
 161
 162   if (command == "\"request\"") {
 163     UMA_HISTOGRAM_ENUMERATION("ManagedMode.BlockingInterstitialCommand",
 164                               ACCESS_REQUEST,
 165                               HISTOGRAM_BOUNDING_VALUE);
 166
 167     Profile* profile =
 168         Profile::FromBrowserContext(web_contents_->GetBrowserContext());
 169     ManagedUserService* managed_user_service =
 170         ManagedUserServiceFactory::GetForProfile(profile);
 171     managed_user_service->AddAccessRequest(url_);
 172     DVLOG(1) << "Sent access request for " << url_.spec();
 173
 174     return;
 175   }
 176
 177   NOTREACHED();
 178 }
 179
 180 void ManagedModeInterstitial::OnProceed() {
 181   // CHECK instead of DCHECK as defense in depth in case we'd accidentally
 182   // proceed on a blocked page.
 183   CHECK(ShouldProceed());
 184   DispatchContinueRequest(true);
 185 }
 186
 187 void ManagedModeInterstitial::OnDontProceed() {
 188   DispatchContinueRequest(false);
 189 }
 190
 191 bool ManagedModeInterstitial::ShouldProceed() {
 192   Profile* profile =
 193       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
 194   ManagedUserService* managed_user_service =
 195       ManagedUserServiceFactory::GetForProfile(profile);
 196   ManagedModeURLFilter* url_filter =
 197       managed_user_service->GetURLFilterForUIThread();
 198   return url_filter->GetFilteringBehaviorForURL(url_) !=
 199          ManagedModeURLFilter::BLOCK;
 200 }
 201
 202 void ManagedModeInterstitial::OnFilteringPrefsChanged() {
 203   if (ShouldProceed())
 204     interstitial_page_->Proceed();
 205 }
 206
 207 void ManagedModeInterstitial::DispatchContinueRequest(bool continue_request) {
 208   BrowserThread::PostTask(
 209       BrowserThread::IO, FROM_HERE, base::Bind(callback_, continue_request));
 210 }