chrome/browser/ssl/captive_portal_blocking_page.cc

   1 // Copyright 2014 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/ssl/captive_portal_blocking_page.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/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/values.h"
  13 #include "chrome/browser/captive_portal/captive_portal_tab_helper.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/common/pref_names.h"
  16 #include "components/captive_portal/captive_portal_detector.h"
  17 #include "components/wifi/wifi_service.h"
  18 #include "content/public/browser/web_contents.h"
  19 #include "grit/generated_resources.h"
  20 #include "net/base/net_util.h"
  21 #include "net/base/network_change_notifier.h"
  22 #include "ui/base/l10n/l10n_util.h"
  23
  24 #if !defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
  25 #error This file must be built with ENABLE_CAPTIVE_PORTAL_DETECTION flag.
  26 #endif
  27
  28 namespace {
  29
  30 // Events for UMA.
  31 enum CaptivePortalBlockingPageEvent {
  32   SHOW_ALL,
  33   OPEN_LOGIN_PAGE,
  34   CAPTIVE_PORTAL_BLOCKING_PAGE_EVENT_COUNT
  35 };
  36
  37 const char kOpenLoginPageCommand[] = "openLoginPage";
  38
  39 void RecordUMA(CaptivePortalBlockingPageEvent event) {
  40   UMA_HISTOGRAM_ENUMERATION("interstitial.captive_portal",
  41                             event,
  42                             CAPTIVE_PORTAL_BLOCKING_PAGE_EVENT_COUNT);
  43 }
  44
  45 class ConnectionInfoDelegate : public CaptivePortalBlockingPage::Delegate {
  46  public:
  47   ConnectionInfoDelegate() {}
  48   ~ConnectionInfoDelegate() override {}
  49
  50   bool IsWifiConnection() const override {
  51     // |net::NetworkChangeNotifier::GetConnectionType| isn't accurate on Linux
  52     // and Windows. See https://crbug.com/160537 for details.
  53     // TODO(meacer): Add heuristics to get a more accurate connection type on
  54     //               these platforms.
  55     return net::NetworkChangeNotifier::GetConnectionType() ==
  56            net::NetworkChangeNotifier::CONNECTION_WIFI;
  57   }
  58
  59   std::string GetWiFiSSID() const override {
  60     // On Windows and Mac, |WiFiService| provides an easy to use API to get the
  61     // currently associated WiFi access point. |WiFiService| isn't available on
  62     // Linux so |net::GetWifiSSID| is used instead.
  63     std::string ssid;
  64 #if defined(OS_WIN) || defined(OS_MACOSX)
  65     scoped_ptr<wifi::WiFiService> wifi_service(wifi::WiFiService::Create());
  66     wifi_service->Initialize(NULL);
  67     std::string error;
  68     wifi_service->GetConnectedNetworkSSID(&ssid, &error);
  69     if (!error.empty())
  70       return "";
  71 #elif defined(OS_LINUX)
  72     ssid = net::GetWifiSSID();
  73 #endif
  74     // TODO(meacer): Handle non UTF8 SSIDs.
  75     if (!base::IsStringUTF8(ssid))
  76       return "";
  77     return ssid;
  78   }
  79 };
  80
  81 } // namespace
  82
  83 // static
  84 const void* CaptivePortalBlockingPage::kTypeForTesting =
  85     &CaptivePortalBlockingPage::kTypeForTesting;
  86
  87 CaptivePortalBlockingPage::CaptivePortalBlockingPage(
  88     content::WebContents* web_contents,
  89     const GURL& request_url,
  90     const GURL& login_url,
  91     const base::Callback<void(bool)>& callback)
  92     : SecurityInterstitialPage(web_contents, request_url),
  93       login_url_(login_url),
  94       delegate_(new ConnectionInfoDelegate),
  95       callback_(callback) {
  96   DCHECK(login_url_.is_valid());
  97   RecordUMA(SHOW_ALL);
  98 }
  99
 100 CaptivePortalBlockingPage::~CaptivePortalBlockingPage() {
 101   // Need to explicity deny the certificate via the callback, otherwise memory
 102   // is leaked.
 103   if (!callback_.is_null()) {
 104     callback_.Run(false);
 105     callback_.Reset();
 106   }
 107 }
 108
 109 const void* CaptivePortalBlockingPage::GetTypeForTesting() const {
 110   return CaptivePortalBlockingPage::kTypeForTesting;
 111 }
 112
 113 bool CaptivePortalBlockingPage::ShouldCreateNewNavigation() const {
 114   return true;
 115 }
 116
 117 void CaptivePortalBlockingPage::PopulateInterstitialStrings(
 118     base::DictionaryValue* load_time_data) {
 119   load_time_data->SetString("iconClass", "icon-offline");
 120   load_time_data->SetString("type", "CAPTIVE_PORTAL");
 121   load_time_data->SetBoolean("overridable", false);
 122
 123   // |IsWifiConnection| isn't accurate on some platforms, so always try to get
 124   // the Wi-Fi SSID even if |IsWifiConnection| is false.
 125   std::string wifi_ssid = delegate_.get()->GetWiFiSSID();
 126   bool is_wifi_connection = !wifi_ssid.empty() ||
 127                             delegate_.get()->IsWifiConnection();
 128
 129   load_time_data->SetString(
 130       "primaryButtonText",
 131       l10n_util::GetStringUTF16(IDS_CAPTIVE_PORTAL_BUTTON_OPEN_LOGIN_PAGE));
 132   load_time_data->SetString(
 133       "tabTitle", l10n_util::GetStringUTF16(
 134                       is_wifi_connection ? IDS_CAPTIVE_PORTAL_HEADING_WIFI
 135                                          : IDS_CAPTIVE_PORTAL_HEADING_WIRED));
 136   load_time_data->SetString(
 137       "heading", l10n_util::GetStringUTF16(
 138                      is_wifi_connection ? IDS_CAPTIVE_PORTAL_HEADING_WIFI
 139                                         : IDS_CAPTIVE_PORTAL_HEADING_WIRED));
 140
 141   if (login_url_.spec() == captive_portal::CaptivePortalDetector::kDefaultURL) {
 142     // Captive portal may intercept requests without HTTP redirects, in which
 143     // case the login url would be the same as the captive portal detection url.
 144     // Don't show the login url in that case.
 145     if (wifi_ssid.empty()) {
 146       load_time_data->SetString(
 147           "primaryParagraph",
 148           l10n_util::GetStringUTF16(
 149               is_wifi_connection
 150                   ? IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_NO_LOGIN_URL_WIFI
 151                   : IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_NO_LOGIN_URL_WIRED));
 152     } else {
 153       load_time_data->SetString(
 154           "primaryParagraph",
 155           l10n_util::GetStringFUTF16(
 156               IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_NO_LOGIN_URL_WIFI_SSID,
 157               net::EscapeForHTML(base::UTF8ToUTF16(wifi_ssid))));
 158     }
 159   } else {
 160     // Portal redirection was done with HTTP redirects, so show the login URL.
 161     // If |languages| is empty, punycode in |login_host| will always be decoded.
 162     std::string languages;
 163     Profile* profile = Profile::FromBrowserContext(
 164         web_contents()->GetBrowserContext());
 165     if (profile)
 166       languages = profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 167     base::string16 login_host = net::IDNToUnicode(login_url_.host(), languages);
 168     if (base::i18n::IsRTL())
 169       base::i18n::WrapStringWithLTRFormatting(&login_host);
 170
 171     if (wifi_ssid.empty()) {
 172       load_time_data->SetString(
 173           "primaryParagraph",
 174           l10n_util::GetStringFUTF16(
 175               is_wifi_connection ? IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_WIFI
 176                                  : IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_WIRED,
 177               login_host));
 178     } else {
 179       load_time_data->SetString(
 180           "primaryParagraph",
 181           l10n_util::GetStringFUTF16(
 182               IDS_CAPTIVE_PORTAL_PRIMARY_PARAGRAPH_WIFI_SSID,
 183               net::EscapeForHTML(base::UTF8ToUTF16(wifi_ssid)), login_host));
 184     }
 185   }
 186
 187   // Fill the empty strings to avoid getting debug warnings.
 188   load_time_data->SetString("openDetails", base::string16());
 189   load_time_data->SetString("closeDetails", base::string16());
 190   load_time_data->SetString("explanationParagraph", base::string16());
 191   load_time_data->SetString("finalParagraph", base::string16());
 192 }
 193
 194 void CaptivePortalBlockingPage::CommandReceived(const std::string& command) {
 195   // The response has quotes around it.
 196   if (command == std::string("\"") + kOpenLoginPageCommand + "\"") {
 197     RecordUMA(OPEN_LOGIN_PAGE);
 198     CaptivePortalTabHelper::OpenLoginTabForWebContents(web_contents(), true);
 199   }
 200 }