chrome/browser/ui/toolbar/toolbar_model_impl.cc

   1 // Copyright 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/toolbar/toolbar_model_impl.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
  11 #include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
  12 #include "chrome/browser/autocomplete/autocomplete_input.h"
  13 #include "chrome/browser/autocomplete/autocomplete_match.h"
  14 #include "chrome/browser/google/google_util.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/search/search.h"
  17 #include "chrome/browser/ssl/ssl_error_info.h"
  18 #include "chrome/browser/ui/toolbar/toolbar_model_delegate.h"
  19 #include "chrome/common/chrome_constants.h"
  20 #include "chrome/common/chrome_switches.h"
  21 #include "chrome/common/pref_names.h"
  22 #include "chrome/common/url_constants.h"
  23 #include "content/public/browser/cert_store.h"
  24 #include "content/public/browser/navigation_controller.h"
  25 #include "content/public/browser/navigation_entry.h"
  26 #include "content/public/browser/web_contents.h"
  27 #include "content/public/browser/web_ui.h"
  28 #include "content/public/common/content_constants.h"
  29 #include "content/public/common/ssl_status.h"
  30 #include "grit/generated_resources.h"
  31 #include "grit/theme_resources.h"
  32 #include "net/base/net_util.h"
  33 #include "net/cert/cert_status_flags.h"
  34 #include "net/cert/x509_certificate.h"
  35 #include "ui/base/l10n/l10n_util.h"
  36
  37 #if defined(OS_CHROMEOS)
  38 #include "chrome/browser/chromeos/policy/policy_cert_service.h"
  39 #include "chrome/browser/chromeos/policy/policy_cert_service_factory.h"
  40 #endif
  41
  42 using content::NavigationController;
  43 using content::NavigationEntry;
  44 using content::SSLStatus;
  45 using content::WebContents;
  46
  47 ToolbarModelImpl::ToolbarModelImpl(ToolbarModelDelegate* delegate)
  48     : delegate_(delegate) {
  49 }
  50
  51 ToolbarModelImpl::~ToolbarModelImpl() {
  52 }
  53
  54 ToolbarModel::SecurityLevel ToolbarModelImpl::GetSecurityLevelForWebContents(
  55       content::WebContents* web_contents) {
  56   if (!web_contents)
  57     return NONE;
  58
  59   NavigationEntry* entry = web_contents->GetController().GetVisibleEntry();
  60   if (!entry)
  61     return NONE;
  62
  63   const SSLStatus& ssl = entry->GetSSL();
  64   switch (ssl.security_style) {
  65     case content::SECURITY_STYLE_UNKNOWN:
  66     case content::SECURITY_STYLE_UNAUTHENTICATED:
  67       return NONE;
  68
  69     case content::SECURITY_STYLE_AUTHENTICATION_BROKEN:
  70       return SECURITY_ERROR;
  71
  72     case content::SECURITY_STYLE_AUTHENTICATED: {
  73 #if defined(OS_CHROMEOS)
  74       policy::PolicyCertService* service =
  75           policy::PolicyCertServiceFactory::GetForProfile(
  76               Profile::FromBrowserContext(web_contents->GetBrowserContext()));
  77       if (service && service->UsedPolicyCertificates())
  78         return SECURITY_POLICY_WARNING;
  79 #endif
  80       if (!!(ssl.content_status & SSLStatus::DISPLAYED_INSECURE_CONTENT))
  81         return SECURITY_WARNING;
  82       if (net::IsCertStatusError(ssl.cert_status)) {
  83         DCHECK(net::IsCertStatusMinorError(ssl.cert_status));
  84         return SECURITY_WARNING;
  85       }
  86       if ((ssl.cert_status & net::CERT_STATUS_IS_EV) &&
  87           content::CertStore::GetInstance()->RetrieveCert(ssl.cert_id, NULL))
  88         return EV_SECURE;
  89       return SECURE;
  90     }
  91     default:
  92       NOTREACHED();
  93       return NONE;
  94   }
  95 }
  96
  97 // ToolbarModelImpl Implementation.
  98 base::string16 ToolbarModelImpl::GetText() const {
  99   base::string16 search_terms(GetSearchTerms(false));
 100   if (!search_terms.empty())
 101     return search_terms;
 102
 103   if (WouldOmitURLDueToOriginChip())
 104     return base::string16();
 105
 106   return GetFormattedURL();
 107 }
 108
 109 base::string16 ToolbarModelImpl::GetFormattedURL() const {
 110   std::string languages;  // Empty if we don't have a |navigation_controller|.
 111   Profile* profile = GetProfile();
 112   if (profile)
 113     languages = profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 114
 115   GURL url(GetURL());
 116   if (url.spec().length() > content::kMaxURLDisplayChars)
 117     url = url.IsStandard() ? url.GetOrigin() : GURL(url.scheme() + ":");
 118   // Note that we can't unescape spaces here, because if the user copies this
 119   // and pastes it into another program, that program may think the URL ends at
 120   // the space.
 121   return AutocompleteInput::FormattedStringWithEquivalentMeaning(
 122       url, net::FormatUrl(url, languages, net::kFormatUrlOmitAll,
 123                           net::UnescapeRule::NORMAL, NULL, NULL, NULL));
 124 }
 125
 126 base::string16 ToolbarModelImpl::GetCorpusNameForMobile() const {
 127   if (!WouldPerformSearchTermReplacement(false))
 128     return base::string16();
 129   GURL url(GetURL());
 130   // If there is a query in the url fragment look for the corpus name there,
 131   // otherwise look for the corpus name in the query parameters.
 132   const std::string& query_str(google_util::HasGoogleSearchQueryParam(
 133       url.ref()) ? url.ref() : url.query());
 134   url::Component query(0, query_str.length()), key, value;
 135   const char kChipKey[] = "sboxchip";
 136   while (url::ExtractQueryKeyValue(query_str.c_str(), &query, &key, &value)) {
 137     if (key.is_nonempty() && query_str.substr(key.begin, key.len) == kChipKey) {
 138       return net::UnescapeAndDecodeUTF8URLComponent(
 139           query_str.substr(value.begin, value.len),
 140           net::UnescapeRule::NORMAL);
 141     }
 142   }
 143   return base::string16();
 144 }
 145
 146 GURL ToolbarModelImpl::GetURL() const {
 147   const NavigationController* navigation_controller = GetNavigationController();
 148   if (navigation_controller) {
 149     const NavigationEntry* entry = navigation_controller->GetVisibleEntry();
 150     if (entry)
 151       return ShouldDisplayURL() ? entry->GetVirtualURL() : GURL();
 152   }
 153
 154   return GURL(content::kAboutBlankURL);
 155 }
 156
 157 bool ToolbarModelImpl::WouldOmitURLDueToOriginChip() const {
 158   const char kInterstitialShownKey[] = "interstitial_shown";
 159
 160   // When users type URLs and hit enter, continue to show those URLs until
 161   // the navigation commits or an interstitial is shown, because having the
 162   // omnibox clear immediately feels like the input was ignored.
 163   NavigationController* navigation_controller = GetNavigationController();
 164   if (navigation_controller) {
 165     NavigationEntry* pending_entry = navigation_controller->GetPendingEntry();
 166     if (pending_entry) {
 167       const NavigationEntry* visible_entry =
 168           navigation_controller->GetVisibleEntry();
 169       base::string16 unused;
 170       // Keep track that we've shown the origin chip on an interstitial so it
 171       // can be shown even after the interstitial was dismissed, to avoid
 172       // showing the chip, removing it and then showing it again.
 173       if (visible_entry &&
 174           visible_entry->GetPageType() == content::PAGE_TYPE_INTERSTITIAL &&
 175           !pending_entry->GetExtraData(kInterstitialShownKey, &unused))
 176         pending_entry->SetExtraData(kInterstitialShownKey, base::string16());
 177       const content::PageTransition transition_type =
 178           pending_entry->GetTransitionType();
 179       if ((transition_type & content::PAGE_TRANSITION_TYPED) != 0 &&
 180           !pending_entry->GetExtraData(kInterstitialShownKey, &unused))
 181         return false;
 182     }
 183   }
 184
 185   bool should_display_origin_chip =
 186       chrome::ShouldDisplayOriginChip() || chrome::ShouldDisplayOriginChipV2();
 187   return should_display_origin_chip && delegate_->InTabbedBrowser() &&
 188       ShouldDisplayURL() && url_replacement_enabled();
 189 }
 190
 191 bool ToolbarModelImpl::WouldPerformSearchTermReplacement(
 192     bool ignore_editing) const {
 193   return !GetSearchTerms(ignore_editing).empty();
 194 }
 195
 196 bool ToolbarModelImpl::ShouldDisplayURL() const {
 197   // Note: The order here is important.
 198   // - The WebUI test must come before the extension scheme test because there
 199   //   can be WebUIs that have extension schemes (e.g. the bookmark manager). In
 200   //   that case, we should prefer what the WebUI instance says.
 201   // - The view-source test must come before the NTP test because of the case
 202   //   of view-source:chrome://newtab, which should display its URL despite what
 203   //   chrome://newtab says.
 204   NavigationController* controller = GetNavigationController();
 205   NavigationEntry* entry = controller ? controller->GetVisibleEntry() : NULL;
 206   if (entry) {
 207     if (entry->IsViewSourceMode() ||
 208         entry->GetPageType() == content::PAGE_TYPE_INTERSTITIAL) {
 209       return true;
 210     }
 211
 212     GURL url = entry->GetURL();
 213     GURL virtual_url = entry->GetVirtualURL();
 214     if (url.SchemeIs(content::kChromeUIScheme) ||
 215         virtual_url.SchemeIs(content::kChromeUIScheme)) {
 216       if (!url.SchemeIs(content::kChromeUIScheme))
 217         url = virtual_url;
 218       return url.host() != chrome::kChromeUINewTabHost;
 219     }
 220   }
 221
 222   if (chrome::IsInstantNTP(delegate_->GetActiveWebContents()))
 223     return false;
 224
 225   return true;
 226 }
 227
 228 ToolbarModel::SecurityLevel ToolbarModelImpl::GetSecurityLevel(
 229     bool ignore_editing) const {
 230   // When editing, assume no security style.
 231   return (input_in_progress() && !ignore_editing) ?
 232       NONE : GetSecurityLevelForWebContents(delegate_->GetActiveWebContents());
 233 }
 234
 235 int ToolbarModelImpl::GetIcon() const {
 236   if (WouldPerformSearchTermReplacement(false)) {
 237     // The secured version of the search icon is necessary if neither the search
 238     // button nor origin chip are present to indicate the security state.
 239     return (chrome::GetDisplaySearchButtonConditions() ==
 240         chrome::DISPLAY_SEARCH_BUTTON_NEVER) &&
 241         !chrome::ShouldDisplayOriginChipV2() ?
 242             IDR_OMNIBOX_SEARCH_SECURED : IDR_OMNIBOX_SEARCH;
 243   }
 244
 245   // When the original site chip experiment is running, the icon in the location
 246   // bar, when not the search icon, should be the page icon.
 247   if (chrome::ShouldDisplayOriginChip())
 248     return GetIconForSecurityLevel(NONE);
 249
 250   return GetIconForSecurityLevel(GetSecurityLevel(false));
 251 }
 252
 253 int ToolbarModelImpl::GetIconForSecurityLevel(SecurityLevel level) const {
 254   static int icon_ids[NUM_SECURITY_LEVELS] = {
 255     IDR_LOCATION_BAR_HTTP,
 256     IDR_OMNIBOX_HTTPS_VALID,
 257     IDR_OMNIBOX_HTTPS_VALID,
 258     IDR_OMNIBOX_HTTPS_WARNING,
 259     IDR_OMNIBOX_HTTPS_POLICY_WARNING,
 260     IDR_OMNIBOX_HTTPS_INVALID,
 261   };
 262   DCHECK(arraysize(icon_ids) == NUM_SECURITY_LEVELS);
 263   return icon_ids[level];
 264 }
 265
 266 base::string16 ToolbarModelImpl::GetEVCertName() const {
 267   DCHECK_EQ(EV_SECURE, GetSecurityLevel(false));
 268   scoped_refptr<net::X509Certificate> cert;
 269   // Note: Navigation controller and active entry are guaranteed non-NULL or
 270   // the security level would be NONE.
 271   content::CertStore::GetInstance()->RetrieveCert(
 272       GetNavigationController()->GetVisibleEntry()->GetSSL().cert_id, &cert);
 273   return GetEVCertName(*cert.get());
 274 }
 275
 276 // static
 277 base::string16 ToolbarModelImpl::GetEVCertName(
 278     const net::X509Certificate& cert) {
 279   // EV are required to have an organization name and country.
 280   if (cert.subject().organization_names.empty() ||
 281       cert.subject().country_name.empty()) {
 282     NOTREACHED();
 283     return base::string16();
 284   }
 285
 286   return l10n_util::GetStringFUTF16(
 287       IDS_SECURE_CONNECTION_EV,
 288       base::UTF8ToUTF16(cert.subject().organization_names[0]),
 289       base::UTF8ToUTF16(cert.subject().country_name));
 290 }
 291
 292 NavigationController* ToolbarModelImpl::GetNavigationController() const {
 293   // This |current_tab| can be NULL during the initialization of the
 294   // toolbar during window creation (i.e. before any tabs have been added
 295   // to the window).
 296   WebContents* current_tab = delegate_->GetActiveWebContents();
 297   return current_tab ? &current_tab->GetController() : NULL;
 298 }
 299
 300 Profile* ToolbarModelImpl::GetProfile() const {
 301   NavigationController* navigation_controller = GetNavigationController();
 302   return navigation_controller ?
 303       Profile::FromBrowserContext(navigation_controller->GetBrowserContext()) :
 304       NULL;
 305 }
 306
 307 base::string16 ToolbarModelImpl::GetSearchTerms(bool ignore_editing) const {
 308   if (!url_replacement_enabled() || (input_in_progress() && !ignore_editing))
 309     return base::string16();
 310
 311   const WebContents* web_contents = delegate_->GetActiveWebContents();
 312   base::string16 search_terms(chrome::GetSearchTerms(web_contents));
 313   if (search_terms.empty()) {
 314     // We mainly do this to enforce the subsequent DCHECK.
 315     return base::string16();
 316   }
 317
 318   // If the page is still loading and the security style is unknown, consider
 319   // the page secure.  Without this, after the user hit enter on some search
 320   // terms, the omnibox would change to displaying the loading URL before
 321   // changing back to the search terms once they could be extracted, thus
 322   // causing annoying flicker.
 323   DCHECK(web_contents);
 324   const NavigationController& nav_controller = web_contents->GetController();
 325   const NavigationEntry* entry = nav_controller.GetVisibleEntry();
 326   if ((entry != nav_controller.GetLastCommittedEntry()) &&
 327       (entry->GetSSL().security_style == content::SECURITY_STYLE_UNKNOWN))
 328     return search_terms;
 329
 330   // If the URL is using a Google base URL specified via the command line, we
 331   // bypass the security check below.
 332   if (entry &&
 333       google_util::StartsWithCommandLineGoogleBaseURL(entry->GetVirtualURL()))
 334     return search_terms;
 335
 336   // Otherwise, extract search terms for HTTPS pages that do not have a security
 337   // error.
 338   ToolbarModel::SecurityLevel security_level = GetSecurityLevel(ignore_editing);
 339   return ((security_level == NONE) || (security_level == SECURITY_ERROR)) ?
 340       base::string16() : search_terms;
 341 }