1 // Copyright 2013 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/search/local_ntp_source.h" 6 7 #include "base/json/json_string_value_serializer.h" 8 #include "base/logging.h" 9 #include "base/memory/ref_counted_memory.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "base/strings/string_util.h" 12 #include "base/strings/stringprintf.h" 13 #include "base/values.h" 14 #include "chrome/browser/search/instant_io_context.h" 15 #include "chrome/browser/search/search.h" 16 #include "chrome/browser/search_engines/template_url_prepopulate_data.h" 17 #include "chrome/browser/search_engines/template_url_service.h" 18 #include "chrome/browser/search_engines/template_url_service_factory.h" 19 #include "chrome/common/url_constants.h" 20 #include "grit/browser_resources.h" 21 #include "grit/generated_resources.h" 22 #include "grit/ui_resources.h" 23 #include "net/url_request/url_request.h" 24 #include "ui/base/l10n/l10n_util.h" 25 #include "ui/base/resource/resource_bundle.h" 26 #include "ui/base/webui/jstemplate_builder.h" 27 #include "url/gurl.h" 28 29 namespace { 30 31 // Signifies a locally constructed resource, i.e. not from grit/. 32 const int kLocalResource = -1; 33 34 const char kConfigDataFilename[] = "config.js"; 35 36 const struct Resource{ 37 const char* filename; 38 int identifier; 39 const char* mime_type; 40 } kResources[] = { 41 { "local-ntp.html", IDR_LOCAL_NTP_HTML, "text/html" }, 42 { "local-ntp.js", IDR_LOCAL_NTP_JS, "application/javascript" }, 43 { kConfigDataFilename, kLocalResource, "application/javascript" }, 44 { "local-ntp.css", IDR_LOCAL_NTP_CSS, "text/css" }, 45 { "images/close_2.png", IDR_CLOSE_2, "image/png" }, 46 { "images/close_2_hover.png", IDR_CLOSE_2_H, "image/png" }, 47 { "images/close_2_active.png", IDR_CLOSE_2_P, "image/png" }, 48 { "images/close_2_white.png", IDR_CLOSE_2_MASK, "image/png" }, 49 { "images/2x/google_logo.png", 50 IDR_LOCAL_NTP_IMAGES_2X_LOGO_PNG, "image/png" }, 51 { "images/2x/white_google_logo.png", 52 IDR_LOCAL_NTP_IMAGES_2X_WHITE_LOGO_PNG, "image/png" }, 53 }; 54 55 // Strips any query parameters from the specified path. 56 std::string StripParameters(const std::string& path) { 57 return path.substr(0, path.find("?")); 58 } 59 60 bool DefaultSearchProviderIsGoogle(Profile* profile) { 61 if (!profile) 62 return false; 63 64 TemplateURLService* template_url_service = 65 TemplateURLServiceFactory::GetForProfile(profile); 66 if (!template_url_service) 67 return false; 68 69 const TemplateURL* default_provider = 70 template_url_service->GetDefaultSearchProvider(); 71 return default_provider && 72 (TemplateURLPrepopulateData::GetEngineType(*default_provider) == 73 SEARCH_ENGINE_GOOGLE); 74 } 75 76 // Adds a localized string keyed by resource id to the dictionary. 77 void AddString(base::DictionaryValue* dictionary, 78 const std::string& key, 79 int resource_id) { 80 dictionary->SetString(key, l10n_util::GetStringUTF16(resource_id)); 81 } 82 83 // Populates |translated_strings| dictionary for the local NTP. 84 scoped_ptr<DictionaryValue> GetTranslatedStrings() { 85 scoped_ptr<base::DictionaryValue> translated_strings( 86 new base::DictionaryValue()); 87 88 AddString(translated_strings.get(), "thumbnailRemovedNotification", 89 IDS_NEW_TAB_THUMBNAIL_REMOVED_NOTIFICATION); 90 AddString(translated_strings.get(), "removeThumbnailTooltip", 91 IDS_NEW_TAB_REMOVE_THUMBNAIL_TOOLTIP); 92 AddString(translated_strings.get(), "undoThumbnailRemove", 93 IDS_NEW_TAB_UNDO_THUMBNAIL_REMOVE); 94 AddString(translated_strings.get(), "restoreThumbnailsShort", 95 IDS_NEW_TAB_RESTORE_THUMBNAILS_SHORT_LINK); 96 AddString(translated_strings.get(), "attributionIntro", 97 IDS_NEW_TAB_ATTRIBUTION_INTRO); 98 AddString(translated_strings.get(), "title", IDS_NEW_TAB_TITLE); 99 100 return translated_strings.Pass(); 101 } 102 103 // Returns a JS dictionary of configuration data for the local NTP. 104 std::string GetConfigData(Profile* profile) { 105 base::DictionaryValue config_data; 106 config_data.Set("translatedStrings", GetTranslatedStrings().release()); 107 config_data.SetBoolean("isGooglePage", 108 DefaultSearchProviderIsGoogle(profile)); 109 110 // Serialize the dictionary. 111 std::string js_text; 112 JSONStringValueSerializer serializer(&js_text); 113 serializer.Serialize(config_data); 114 115 std::string config_data_js; 116 config_data_js.append("var configData = "); 117 config_data_js.append(js_text); 118 config_data_js.append(";"); 119 return config_data_js; 120 } 121 122 } // namespace 123 124 LocalNtpSource::LocalNtpSource(Profile* profile) : profile_(profile) { 125 } 126 127 LocalNtpSource::~LocalNtpSource() { 128 } 129 130 std::string LocalNtpSource::GetSource() const { 131 return chrome::kChromeSearchLocalNtpHost; 132 } 133 134 void LocalNtpSource::StartDataRequest( 135 const std::string& path, 136 int render_process_id, 137 int render_view_id, 138 const content::URLDataSource::GotDataCallback& callback) { 139 const std::string stripped_path = StripParameters(path); 140 if (stripped_path == kConfigDataFilename) { 141 std::string config_data_js = GetConfigData(profile_); 142 callback.Run(base::RefCountedString::TakeString(&config_data_js)); 143 return; 144 } 145 for (size_t i = 0; i < arraysize(kResources); ++i) { 146 if (stripped_path == kResources[i].filename) { 147 scoped_refptr<base::RefCountedStaticMemory> response( 148 ResourceBundle::GetSharedInstance().LoadDataResourceBytes( 149 kResources[i].identifier)); 150 callback.Run(response.get()); 151 return; 152 } 153 } 154 callback.Run(NULL); 155 }; 156 157 std::string LocalNtpSource::GetMimeType( 158 const std::string& path) const { 159 const std::string stripped_path = StripParameters(path); 160 for (size_t i = 0; i < arraysize(kResources); ++i) { 161 if (stripped_path == kResources[i].filename) 162 return kResources[i].mime_type; 163 } 164 return std::string(); 165 } 166 167 bool LocalNtpSource::ShouldServiceRequest( 168 const net::URLRequest* request) const { 169 DCHECK(request->url().host() == chrome::kChromeSearchLocalNtpHost); 170 if (!InstantIOContext::ShouldServiceRequest(request)) 171 return false; 172 173 if (request->url().SchemeIs(chrome::kChromeSearchScheme)) { 174 DCHECK(StartsWithASCII(request->url().path(), "/", true)); 175 std::string filename = request->url().path().substr(1); 176 for (size_t i = 0; i < arraysize(kResources); ++i) { 177 if (filename == kResources[i].filename) 178 return true; 179 } 180 } 181 return false; 182 } 183 184 std::string LocalNtpSource::GetContentSecurityPolicyFrameSrc() const { 185 // Allow embedding of most visited iframes. 186 return base::StringPrintf("frame-src %s;", 187 chrome::kChromeSearchMostVisitedUrl); 188 } 189
