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   std::string languages;  // Empty if we don't have a |navigation_controller|.
 107   Profile* profile = GetProfile();
 108   if (profile)
 109     languages = profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 110
 111   GURL url(GetURL());
 112   if (url.spec().length() > content::kMaxURLDisplayChars)
 113     url = url.IsStandard() ? url.GetOrigin() : GURL(url.scheme() + ":");
 114   // Note that we can't unescape spaces here, because if the user copies this
 115   // and pastes it into another program, that program may think the URL ends at
 116   // the space.
 117   return AutocompleteInput::FormattedStringWithEquivalentMeaning(
 118       url, net::FormatUrl(url, languages, net::kFormatUrlOmitAll,
 119                           net::UnescapeRule::NORMAL, NULL, NULL, NULL));
 120 }
 121
 122 base::string16 ToolbarModelImpl::GetCorpusNameForMobile() const {
 123   if (!WouldPerformSearchTermReplacement(false))
 124     return base::string16();
 125   GURL url(GetURL());
 126   // If there is a query in the url fragment look for the corpus name there,
 127   // otherwise look for the corpus name in the query parameters.
 128   const std::string& query_str(google_util::HasGoogleSearchQueryParam(
 129       url.ref()) ? url.ref() : url.query());
 130   url_parse::Component query(0, query_str.length()), key, value;
 131   const char kChipKey[] = "sboxchip";
 132   while (url_parse::ExtractQueryKeyValue(query_str.c_str(), &query, &key,
 133                                          &value)) {
 134     if (key.is_nonempty() && query_str.substr(key.begin, key.len) == kChipKey) {
 135       return net::UnescapeAndDecodeUTF8URLComponent(
 136           query_str.substr(value.begin, value.len),
 137           net::UnescapeRule::NORMAL, NULL);
 138     }
 139   }
 140   return base::string16();
 141 }
 142
 143 GURL ToolbarModelImpl::GetURL() const {
 144   const NavigationController* navigation_controller = GetNavigationController();
 145   if (navigation_controller) {
 146     const NavigationEntry* entry = navigation_controller->GetVisibleEntry();
 147     if (entry)
 148       return ShouldDisplayURL() ? entry->GetVirtualURL() : GURL();
 149   }
 150
 151   return GURL(content::kAboutBlankURL);
 152 }
 153
 154 bool ToolbarModelImpl::WouldOmitURLDueToOriginChip() const {
 155   return chrome::ShouldDisplayOriginChip() && ShouldDisplayURL() &&
 156       url_replacement_enabled();
 157 }
 158
 159 bool ToolbarModelImpl::WouldPerformSearchTermReplacement(
 160     bool ignore_editing) const {
 161   return !GetSearchTerms(ignore_editing).empty();
 162 }
 163
 164 bool ToolbarModelImpl::ShouldDisplayURL() const {
 165   // Note: The order here is important.
 166   // - The WebUI test must come before the extension scheme test because there
 167   //   can be WebUIs that have extension schemes (e.g. the bookmark manager). In
 168   //   that case, we should prefer what the WebUI instance says.
 169   // - The view-source test must come before the NTP test because of the case
 170   //   of view-source:chrome://newtab, which should display its URL despite what
 171   //   chrome://newtab says.
 172   NavigationController* controller = GetNavigationController();
 173   NavigationEntry* entry = controller ? controller->GetVisibleEntry() : NULL;
 174   if (entry) {
 175     if (entry->IsViewSourceMode() ||
 176         entry->GetPageType() == content::PAGE_TYPE_INTERSTITIAL) {
 177       return true;
 178     }
 179
 180     GURL url = entry->GetURL();
 181     GURL virtual_url = entry->GetVirtualURL();
 182     if (url.SchemeIs(chrome::kChromeUIScheme) ||
 183         virtual_url.SchemeIs(chrome::kChromeUIScheme)) {
 184       if (!url.SchemeIs(chrome::kChromeUIScheme))
 185         url = virtual_url;
 186       return url.host() != chrome::kChromeUINewTabHost;
 187     }
 188   }
 189
 190   if (chrome::IsInstantNTP(delegate_->GetActiveWebContents()))
 191     return false;
 192
 193   return true;
 194 }
 195
 196 ToolbarModel::SecurityLevel ToolbarModelImpl::GetSecurityLevel(
 197     bool ignore_editing) const {
 198   // When editing, assume no security style.
 199   return (input_in_progress() && !ignore_editing) ?
 200       NONE : GetSecurityLevelForWebContents(delegate_->GetActiveWebContents());
 201 }
 202
 203 int ToolbarModelImpl::GetIcon() const {
 204   if (WouldPerformSearchTermReplacement(false)) {
 205     return (chrome::GetDisplaySearchButtonConditions() ==
 206         chrome::DISPLAY_SEARCH_BUTTON_NEVER) ?
 207             IDR_OMNIBOX_SEARCH_SECURED : IDR_OMNIBOX_SEARCH;
 208   }
 209
 210   // When the site chip experiment is running, the icon in the location bar,
 211   // when not the search icon, should be the page icon.
 212   if (chrome::ShouldDisplayOriginChip())
 213     return GetIconForSecurityLevel(NONE);
 214
 215   return GetIconForSecurityLevel(GetSecurityLevel(false));
 216 }
 217
 218 int ToolbarModelImpl::GetIconForSecurityLevel(SecurityLevel level) const {
 219   static int icon_ids[NUM_SECURITY_LEVELS] = {
 220     IDR_LOCATION_BAR_HTTP,
 221     IDR_OMNIBOX_HTTPS_VALID,
 222     IDR_OMNIBOX_HTTPS_VALID,
 223     IDR_OMNIBOX_HTTPS_WARNING,
 224     IDR_OMNIBOX_HTTPS_POLICY_WARNING,
 225     IDR_OMNIBOX_HTTPS_INVALID,
 226   };
 227   DCHECK(arraysize(icon_ids) == NUM_SECURITY_LEVELS);
 228   return icon_ids[level];
 229 }
 230
 231 base::string16 ToolbarModelImpl::GetEVCertName() const {
 232   DCHECK_EQ(EV_SECURE, GetSecurityLevel(false));
 233   scoped_refptr<net::X509Certificate> cert;
 234   // Note: Navigation controller and active entry are guaranteed non-NULL or
 235   // the security level would be NONE.
 236   content::CertStore::GetInstance()->RetrieveCert(
 237       GetNavigationController()->GetVisibleEntry()->GetSSL().cert_id, &cert);
 238   return GetEVCertName(*cert.get());
 239 }
 240
 241 // static
 242 base::string16 ToolbarModelImpl::GetEVCertName(
 243     const net::X509Certificate& cert) {
 244   // EV are required to have an organization name and country.
 245   if (cert.subject().organization_names.empty() ||
 246       cert.subject().country_name.empty()) {
 247     NOTREACHED();
 248     return base::string16();
 249   }
 250
 251   return l10n_util::GetStringFUTF16(
 252       IDS_SECURE_CONNECTION_EV,
 253       base::UTF8ToUTF16(cert.subject().organization_names[0]),
 254       base::UTF8ToUTF16(cert.subject().country_name));
 255 }
 256
 257 NavigationController* ToolbarModelImpl::GetNavigationController() const {
 258   // This |current_tab| can be NULL during the initialization of the
 259   // toolbar during window creation (i.e. before any tabs have been added
 260   // to the window).
 261   WebContents* current_tab = delegate_->GetActiveWebContents();
 262   return current_tab ? &current_tab->GetController() : NULL;
 263 }
 264
 265 Profile* ToolbarModelImpl::GetProfile() const {
 266   NavigationController* navigation_controller = GetNavigationController();
 267   return navigation_controller ?
 268       Profile::FromBrowserContext(navigation_controller->GetBrowserContext()) :
 269       NULL;
 270 }
 271
 272 base::string16 ToolbarModelImpl::GetSearchTerms(bool ignore_editing) const {
 273   if (!url_replacement_enabled() || (input_in_progress() && !ignore_editing))
 274     return base::string16();
 275
 276   const WebContents* web_contents = delegate_->GetActiveWebContents();
 277   base::string16 search_terms(chrome::GetSearchTerms(web_contents));
 278   if (search_terms.empty()) {
 279     // We mainly do this to enforce the subsequent DCHECK.
 280     return base::string16();
 281   }
 282
 283   // If the page is still loading and the security style is unknown, consider
 284   // the page secure.  Without this, after the user hit enter on some search
 285   // terms, the omnibox would change to displaying the loading URL before
 286   // changing back to the search terms once they could be extracted, thus
 287   // causing annoying flicker.
 288   DCHECK(web_contents);
 289   const NavigationController& nav_controller = web_contents->GetController();
 290   const NavigationEntry* entry = nav_controller.GetVisibleEntry();
 291   if ((entry != nav_controller.GetLastCommittedEntry()) &&
 292       (entry->GetSSL().security_style == content::SECURITY_STYLE_UNKNOWN))
 293     return search_terms;
 294
 295   // If the URL is using a Google base URL specified via the command line, we
 296   // bypass the security check below.
 297   if (entry &&
 298       google_util::StartsWithCommandLineGoogleBaseURL(entry->GetVirtualURL()))
 299     return search_terms;
 300
 301   // Otherwise, extract search terms for HTTPS pages that do not have a security
 302   // error.
 303   ToolbarModel::SecurityLevel security_level = GetSecurityLevel(ignore_editing);
 304   return ((security_level == NONE) || (security_level == SECURITY_ERROR)) ?
 305       base::string16() : search_terms;
 306 }