1 // Copyright 2014 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "components/search_engines/default_search_manager.h"
13 #include "base/check.h"
14 #include "base/compiler_specific.h"
15 #include "base/functional/bind.h"
16 #include "base/functional/callback_helpers.h"
17 #include "base/i18n/case_conversion.h"
18 #include "base/ranges/algorithm.h"
19 #include "base/strings/string_split.h"
20 #include "base/strings/string_util.h"
21 #include "base/strings/utf_string_conversions.h"
22 #include "base/time/time.h"
23 #include "components/pref_registry/pref_registry_syncable.h"
24 #include "components/prefs/pref_service.h"
25 #include "components/prefs/pref_value_map.h"
26 #include "components/search_engines/search_engines_pref_names.h"
27 #include "components/search_engines/template_url_data.h"
28 #include "components/search_engines/template_url_data_util.h"
29 #include "components/search_engines/template_url_prepopulate_data.h"
33 bool g_fallback_search_engines_disabled = false;
37 // A dictionary to hold all data related to the Default Search Engine.
38 // Eventually, this should replace all the data stored in the
39 // default_search_provider.* prefs.
40 const char DefaultSearchManager::kDefaultSearchProviderDataPrefName[] =
41 "default_search_provider_data.template_url_data";
43 const char DefaultSearchManager::kID[] = "id";
44 const char DefaultSearchManager::kShortName[] = "short_name";
45 const char DefaultSearchManager::kKeyword[] = "keyword";
46 const char DefaultSearchManager::kPrepopulateID[] = "prepopulate_id";
47 const char DefaultSearchManager::kSyncGUID[] = "synced_guid";
49 const char DefaultSearchManager::kURL[] = "url";
50 const char DefaultSearchManager::kSuggestionsURL[] = "suggestions_url";
51 const char DefaultSearchManager::kImageURL[] = "image_url";
52 const char DefaultSearchManager::kImageTranslateURL[] = "image_translate_url";
53 const char DefaultSearchManager::kNewTabURL[] = "new_tab_url";
54 const char DefaultSearchManager::kContextualSearchURL[] =
55 "contextual_search_url";
56 const char DefaultSearchManager::kFaviconURL[] = "favicon_url";
57 const char DefaultSearchManager::kLogoURL[] = "logo_url";
58 const char DefaultSearchManager::kDoodleURL[] = "doodle_url";
59 const char DefaultSearchManager::kOriginatingURL[] = "originating_url";
61 const char DefaultSearchManager::kSearchURLPostParams[] =
62 "search_url_post_params";
63 const char DefaultSearchManager::kSuggestionsURLPostParams[] =
64 "suggestions_url_post_params";
65 const char DefaultSearchManager::kImageURLPostParams[] =
66 "image_url_post_params";
67 const char DefaultSearchManager::kSideSearchParam[] = "side_search_param";
68 const char DefaultSearchManager::kSideImageSearchParam[] =
69 "side_image_search_param";
70 const char DefaultSearchManager::kImageSearchBrandingLabel[] =
71 "image_search_branding_label";
72 const char DefaultSearchManager::kSearchIntentParams[] = "search_intent_params";
73 const char DefaultSearchManager::kImageTranslateSourceLanguageParamKey[] =
74 "image_translate_source_language_param_key";
75 const char DefaultSearchManager::kImageTranslateTargetLanguageParamKey[] =
76 "image_translate_target_language_param_key";
78 const char DefaultSearchManager::kSafeForAutoReplace[] = "safe_for_autoreplace";
79 const char DefaultSearchManager::kInputEncodings[] = "input_encodings";
81 const char DefaultSearchManager::kDateCreated[] = "date_created";
82 const char DefaultSearchManager::kLastModified[] = "last_modified";
83 const char DefaultSearchManager::kLastVisited[] = "last_visited";
85 const char DefaultSearchManager::kUsageCount[] = "usage_count";
86 const char DefaultSearchManager::kAlternateURLs[] = "alternate_urls";
87 const char DefaultSearchManager::kCreatedByPolicy[] = "created_by_policy";
88 const char DefaultSearchManager::kDisabledByPolicy[] = "disabled_by_policy";
89 const char DefaultSearchManager::kCreatedFromPlayAPI[] =
90 "created_from_play_api";
91 const char DefaultSearchManager::kPreconnectToSearchUrl[] =
92 "preconnect_to_search_url";
93 const char DefaultSearchManager::kPrefetchLikelyNavigations[] =
94 "prefetch_likely_navigations";
95 const char DefaultSearchManager::kIsActive[] = "is_active";
96 const char DefaultSearchManager::kStarterPackId[] = "starter_pack_id";
97 const char DefaultSearchManager::kEnforcedByPolicy[] = "enforced_by_policy";
99 DefaultSearchManager::DefaultSearchManager(
100 PrefService* pref_service,
101 const ObserverCallback& change_observer)
102 : pref_service_(pref_service), change_observer_(change_observer) {
104 pref_change_registrar_.Init(pref_service_);
105 pref_change_registrar_.Add(
106 kDefaultSearchProviderDataPrefName,
107 base::BindRepeating(&DefaultSearchManager::OnDefaultSearchPrefChanged,
108 base::Unretained(this)));
109 pref_change_registrar_.Add(
110 prefs::kSearchProviderOverrides,
111 base::BindRepeating(&DefaultSearchManager::OnOverridesPrefChanged,
112 base::Unretained(this)));
114 LoadPrepopulatedDefaultSearch();
115 LoadDefaultSearchEngineFromPrefs();
118 DefaultSearchManager::~DefaultSearchManager() {
122 void DefaultSearchManager::RegisterProfilePrefs(
123 user_prefs::PrefRegistrySyncable* registry) {
124 registry->RegisterDictionaryPref(kDefaultSearchProviderDataPrefName);
128 void DefaultSearchManager::AddPrefValueToMap(base::Value::Dict value,
129 PrefValueMap* pref_value_map) {
130 pref_value_map->SetValue(kDefaultSearchProviderDataPrefName,
131 base::Value(std::move(value)));
135 void DefaultSearchManager::SetFallbackSearchEnginesDisabledForTesting(
137 g_fallback_search_engines_disabled = disabled;
140 const TemplateURLData* DefaultSearchManager::GetDefaultSearchEngine(
141 Source* source) const {
142 if (default_search_mandatory_by_policy_) {
144 *source = FROM_POLICY;
145 return prefs_default_search_.get();
147 if (default_search_recommended_by_policy_) {
149 *source = FROM_POLICY_RECOMMENDED;
150 return prefs_default_search_.get();
152 if (extension_default_search_) {
154 *source = FROM_EXTENSION;
155 return extension_default_search_.get();
157 if (prefs_default_search_) {
160 return prefs_default_search_.get();
163 *source = FROM_FALLBACK;
164 return GetFallbackSearchEngine();
167 std::unique_ptr<TemplateURLData>
168 DefaultSearchManager::GetDefaultSearchEngineIgnoringExtensions() const {
169 if (prefs_default_search_)
170 return std::make_unique<TemplateURLData>(*prefs_default_search_);
172 if (default_search_mandatory_by_policy_ ||
173 default_search_recommended_by_policy_) {
174 // If a policy specified a specific engine, it would be returned above
175 // as |prefs_default_search_|. The only other scenario is that policy has
176 // disabled default search, in which case we return null.
180 // |prefs_default_search_| may not be populated even if there is a user
181 // preference; check prefs directly as the source of truth.
182 const base::Value* user_value =
183 pref_service_->GetUserPrefValue(kDefaultSearchProviderDataPrefName);
184 if (user_value && user_value->is_dict()) {
185 auto turl_data = TemplateURLDataFromDictionary(user_value->GetDict());
190 const TemplateURLData* fallback = GetFallbackSearchEngine();
192 return std::make_unique<TemplateURLData>(*fallback);
197 DefaultSearchManager::Source
198 DefaultSearchManager::GetDefaultSearchEngineSource() const {
200 GetDefaultSearchEngine(&source);
204 const TemplateURLData* DefaultSearchManager::GetFallbackSearchEngine() const {
205 return g_fallback_search_engines_disabled ? nullptr
206 : fallback_default_search_.get();
209 void DefaultSearchManager::SetUserSelectedDefaultSearchEngine(
210 const TemplateURLData& data) {
211 if (!pref_service_) {
212 prefs_default_search_ = std::make_unique<TemplateURLData>(data);
213 MergePrefsDataWithPrepopulated();
218 pref_service_->SetDict(kDefaultSearchProviderDataPrefName,
219 TemplateURLDataToDictionary(data));
222 void DefaultSearchManager::ClearUserSelectedDefaultSearchEngine() {
224 pref_service_->ClearPref(kDefaultSearchProviderDataPrefName);
226 prefs_default_search_.reset();
231 void DefaultSearchManager::OnDefaultSearchPrefChanged() {
232 bool source_was_fallback = GetDefaultSearchEngineSource() == FROM_FALLBACK;
234 LoadDefaultSearchEngineFromPrefs();
236 // The effective DSE may have changed unless we were using the fallback source
237 // both before and after the above load.
238 if (!source_was_fallback || (GetDefaultSearchEngineSource() != FROM_FALLBACK))
242 void DefaultSearchManager::OnOverridesPrefChanged() {
243 LoadPrepopulatedDefaultSearch();
245 const TemplateURLData* effective_data = GetDefaultSearchEngine(nullptr);
246 if (effective_data && effective_data->prepopulate_id) {
247 // A user-selected, policy-selected or fallback pre-populated engine is
248 // active and may have changed with this event.
253 void DefaultSearchManager::MergePrefsDataWithPrepopulated() {
254 if (!prefs_default_search_ || !prefs_default_search_->prepopulate_id)
257 // TODO(crbug.com/1049784): Parameters for search engine created from play api
258 // should be preserved even if corresponding prepopulated search engine
259 // exists. This logic will be revisited as part of implementation of
260 // crbug.com/1049784, which will enable updating play api search engine
261 // parameters with prepopulated data.
262 if (prefs_default_search_->created_from_play_api)
265 std::vector<std::unique_ptr<TemplateURLData>> prepopulated_urls =
266 TemplateURLPrepopulateData::GetPrepopulatedEngines(pref_service_,
269 auto default_engine = base::ranges::find(
270 prepopulated_urls, prefs_default_search_->prepopulate_id,
271 &TemplateURLData::prepopulate_id);
273 if (default_engine == prepopulated_urls.end())
276 auto& engine = *default_engine;
278 if (!prefs_default_search_->safe_for_autoreplace) {
279 engine->safe_for_autoreplace = false;
280 engine->SetKeyword(prefs_default_search_->keyword());
281 engine->SetShortName(prefs_default_search_->short_name());
284 engine->id = prefs_default_search_->id;
285 engine->sync_guid = prefs_default_search_->sync_guid;
286 engine->date_created = prefs_default_search_->date_created;
287 engine->last_modified = prefs_default_search_->last_modified;
288 engine->last_visited = prefs_default_search_->last_visited;
289 engine->favicon_url = prefs_default_search_->favicon_url;
291 prefs_default_search_ = std::move(engine);
294 void DefaultSearchManager::LoadDefaultSearchEngineFromPrefs() {
298 prefs_default_search_.reset();
299 extension_default_search_.reset();
300 const PrefService::Preference* pref =
301 pref_service_->FindPreference(kDefaultSearchProviderDataPrefName);
303 default_search_mandatory_by_policy_ = pref->IsManaged();
304 default_search_recommended_by_policy_ = pref->IsRecommended();
306 const base::Value::Dict& url_dict =
307 pref_service_->GetDict(kDefaultSearchProviderDataPrefName);
308 if (url_dict.empty())
311 if (default_search_mandatory_by_policy_ ||
312 default_search_recommended_by_policy_) {
313 if (url_dict.FindBool(kDisabledByPolicy).value_or(false))
317 auto turl_data = TemplateURLDataFromDictionary(url_dict);
321 // Check if default search preference is overriden by extension.
322 if (pref->IsExtensionControlled()) {
323 extension_default_search_ = std::move(turl_data);
325 prefs_default_search_ = std::move(turl_data);
326 MergePrefsDataWithPrepopulated();
330 void DefaultSearchManager::LoadPrepopulatedDefaultSearch() {
331 std::unique_ptr<TemplateURLData> data =
332 TemplateURLPrepopulateData::GetPrepopulatedDefaultSearch(pref_service_);
333 fallback_default_search_ = std::move(data);
334 MergePrefsDataWithPrepopulated();
337 void DefaultSearchManager::NotifyObserver() {
338 if (!change_observer_.is_null()) {
339 Source source = FROM_FALLBACK;
340 const TemplateURLData* data = GetDefaultSearchEngine(&source);
341 change_observer_.Run(data, source);