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| 1 // Copyright 2015 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 "components/password_manager/core/browser/affiliation_backend.h" | |
| 6 | |
| 7 #include <stdint.h> | |
| 8 #include <algorithm> | |
| 9 #include <utility> | |
| 10 | |
| 11 #include "base/bind.h" | |
| 12 #include "base/location.h" | |
| 13 #include "base/memory/ptr_util.h" | |
| 14 #include "base/metrics/histogram_macros.h" | |
| 15 #include "base/single_thread_task_runner.h" | |
| 16 #include "base/threading/thread_checker.h" | |
| 17 #include "base/time/clock.h" | |
| 18 #include "base/time/tick_clock.h" | |
| 19 #include "base/time/time.h" | |
| 20 #include "components/password_manager/core/browser/affiliation_database.h" | |
| 21 #include "components/password_manager/core/browser/affiliation_fetch_throttler.h
" | |
| 22 #include "components/password_manager/core/browser/affiliation_fetcher.h" | |
| 23 #include "components/password_manager/core/browser/facet_manager.h" | |
| 24 #include "net/url_request/url_request_context_getter.h" | |
| 25 | |
| 26 namespace password_manager { | |
| 27 | |
| 28 AffiliationBackend::AffiliationBackend( | |
| 29 const scoped_refptr<net::URLRequestContextGetter>& request_context_getter, | |
| 30 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 31 std::unique_ptr<base::Clock> time_source, | |
| 32 std::unique_ptr<base::TickClock> time_tick_source) | |
| 33 : request_context_getter_(request_context_getter), | |
| 34 task_runner_(task_runner), | |
| 35 clock_(std::move(time_source)), | |
| 36 tick_clock_(std::move(time_tick_source)), | |
| 37 construction_time_(clock_->Now()), | |
| 38 weak_ptr_factory_(this) { | |
| 39 DCHECK_LT(base::Time(), clock_->Now()); | |
| 40 } | |
| 41 | |
| 42 AffiliationBackend::~AffiliationBackend() { | |
| 43 } | |
| 44 | |
| 45 void AffiliationBackend::Initialize(const base::FilePath& db_path) { | |
| 46 thread_checker_.reset(new base::ThreadChecker); | |
| 47 | |
| 48 DCHECK(!throttler_); | |
| 49 throttler_.reset( | |
| 50 new AffiliationFetchThrottler(this, task_runner_, tick_clock_.get())); | |
| 51 | |
| 52 // TODO(engedy): Currently, when Init() returns false, it always poisons the | |
| 53 // DB, so subsequent operations will silently fail. Consider either fully | |
| 54 // committing to this approach and making Init() a void, or handling the | |
| 55 // return value here. See: https://crbug.com/478831. | |
| 56 cache_.reset(new AffiliationDatabase()); | |
| 57 cache_->Init(db_path); | |
| 58 } | |
| 59 | |
| 60 void AffiliationBackend::GetAffiliations( | |
| 61 const FacetURI& facet_uri, | |
| 62 StrategyOnCacheMiss cache_miss_strategy, | |
| 63 const AffiliationService::ResultCallback& callback, | |
| 64 const scoped_refptr<base::TaskRunner>& callback_task_runner) { | |
| 65 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 66 | |
| 67 FacetManager* facet_manager = GetOrCreateFacetManager(facet_uri); | |
| 68 DCHECK(facet_manager); | |
| 69 facet_manager->GetAffiliations(cache_miss_strategy, callback, | |
| 70 callback_task_runner); | |
| 71 | |
| 72 if (facet_manager->CanBeDiscarded()) | |
| 73 facet_managers_.erase(facet_uri); | |
| 74 } | |
| 75 | |
| 76 void AffiliationBackend::Prefetch(const FacetURI& facet_uri, | |
| 77 const base::Time& keep_fresh_until) { | |
| 78 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 79 | |
| 80 FacetManager* facet_manager = GetOrCreateFacetManager(facet_uri); | |
| 81 DCHECK(facet_manager); | |
| 82 facet_manager->Prefetch(keep_fresh_until); | |
| 83 | |
| 84 if (facet_manager->CanBeDiscarded()) | |
| 85 facet_managers_.erase(facet_uri); | |
| 86 } | |
| 87 | |
| 88 void AffiliationBackend::CancelPrefetch(const FacetURI& facet_uri, | |
| 89 const base::Time& keep_fresh_until) { | |
| 90 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 91 | |
| 92 auto facet_manager_it = facet_managers_.find(facet_uri); | |
| 93 if (facet_manager_it == facet_managers_.end()) | |
| 94 return; | |
| 95 facet_manager_it->second->CancelPrefetch(keep_fresh_until); | |
| 96 | |
| 97 if (facet_manager_it->second->CanBeDiscarded()) | |
| 98 facet_managers_.erase(facet_uri); | |
| 99 } | |
| 100 | |
| 101 void AffiliationBackend::TrimCache() { | |
| 102 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 103 | |
| 104 std::vector<AffiliatedFacetsWithUpdateTime> all_affiliations; | |
| 105 cache_->GetAllAffiliations(&all_affiliations); | |
| 106 for (const auto& affiliation : all_affiliations) | |
| 107 DiscardCachedDataIfNoLongerNeeded(affiliation.facets); | |
| 108 } | |
| 109 | |
| 110 void AffiliationBackend::TrimCacheForFacet(const FacetURI& facet_uri) { | |
| 111 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 112 | |
| 113 AffiliatedFacetsWithUpdateTime affiliation; | |
| 114 if (cache_->GetAffiliationsForFacet(facet_uri, &affiliation)) | |
| 115 DiscardCachedDataIfNoLongerNeeded(affiliation.facets); | |
| 116 } | |
| 117 | |
| 118 // static | |
| 119 void AffiliationBackend::DeleteCache(const base::FilePath& db_path) { | |
| 120 AffiliationDatabase::Delete(db_path); | |
| 121 } | |
| 122 | |
| 123 FacetManager* AffiliationBackend::GetOrCreateFacetManager( | |
| 124 const FacetURI& facet_uri) { | |
| 125 std::unique_ptr<FacetManager>& facet_manager = facet_managers_[facet_uri]; | |
| 126 if (!facet_manager) { | |
| 127 facet_manager = | |
| 128 base::MakeUnique<FacetManager>(facet_uri, this, clock_.get()); | |
| 129 } | |
| 130 return facet_manager.get(); | |
| 131 } | |
| 132 | |
| 133 void AffiliationBackend::DiscardCachedDataIfNoLongerNeeded( | |
| 134 const AffiliatedFacets& affiliated_facets) { | |
| 135 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 136 | |
| 137 // Discard the equivalence class if there is no facet in the class whose | |
| 138 // FacetManager claims that it needs to keep the data. | |
| 139 for (const auto& facet_uri : affiliated_facets) { | |
| 140 auto facet_manager_it = facet_managers_.find(facet_uri); | |
| 141 if (facet_manager_it != facet_managers_.end() && | |
| 142 !facet_manager_it->second->CanCachedDataBeDiscarded()) { | |
| 143 return; | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 CHECK(!affiliated_facets.empty()); | |
| 148 cache_->DeleteAffiliationsForFacet(affiliated_facets[0]); | |
| 149 } | |
| 150 | |
| 151 void AffiliationBackend::OnSendNotification(const FacetURI& facet_uri) { | |
| 152 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 153 | |
| 154 auto facet_manager_it = facet_managers_.find(facet_uri); | |
| 155 if (facet_manager_it == facet_managers_.end()) | |
| 156 return; | |
| 157 facet_manager_it->second->NotifyAtRequestedTime(); | |
| 158 | |
| 159 if (facet_manager_it->second->CanBeDiscarded()) | |
| 160 facet_managers_.erase(facet_uri); | |
| 161 } | |
| 162 | |
| 163 bool AffiliationBackend::ReadAffiliationsFromDatabase( | |
| 164 const FacetURI& facet_uri, | |
| 165 AffiliatedFacetsWithUpdateTime* affiliations) { | |
| 166 return cache_->GetAffiliationsForFacet(facet_uri, affiliations); | |
| 167 } | |
| 168 | |
| 169 void AffiliationBackend::SignalNeedNetworkRequest() { | |
| 170 throttler_->SignalNetworkRequestNeeded(); | |
| 171 } | |
| 172 | |
| 173 void AffiliationBackend::RequestNotificationAtTime(const FacetURI& facet_uri, | |
| 174 base::Time time) { | |
| 175 // TODO(engedy): Avoid spamming the task runner; only ever schedule the first | |
| 176 // callback. crbug.com/437865. | |
| 177 task_runner_->PostDelayedTask( | |
| 178 FROM_HERE, base::Bind(&AffiliationBackend::OnSendNotification, | |
| 179 weak_ptr_factory_.GetWeakPtr(), facet_uri), | |
| 180 time - clock_->Now()); | |
| 181 } | |
| 182 | |
| 183 void AffiliationBackend::OnFetchSucceeded( | |
| 184 std::unique_ptr<AffiliationFetcherDelegate::Result> result) { | |
| 185 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 186 | |
| 187 fetcher_.reset(); | |
| 188 throttler_->InformOfNetworkRequestComplete(true); | |
| 189 | |
| 190 for (const AffiliatedFacets& affiliated_facets : *result) { | |
| 191 AffiliatedFacetsWithUpdateTime affiliation; | |
| 192 affiliation.facets = affiliated_facets; | |
| 193 affiliation.last_update_time = clock_->Now(); | |
| 194 | |
| 195 std::vector<AffiliatedFacetsWithUpdateTime> obsoleted_affiliations; | |
| 196 cache_->StoreAndRemoveConflicting(affiliation, &obsoleted_affiliations); | |
| 197 | |
| 198 // Cached data in contradiction with newly stored data automatically gets | |
| 199 // removed from the DB, and will be stored into |obsoleted_affiliations|. | |
| 200 // TODO(engedy): Currently, handling this is entirely meaningless unless in | |
| 201 // the edge case when the user has credentials for two Android applications | |
| 202 // which are now being de-associated. But even in that case, nothing will | |
| 203 // explode and the only symptom will be that credentials for the Android | |
| 204 // application that is not being fetched right now, if any, will not be | |
| 205 // filled into affiliated applications until the next fetch. Still, this | |
| 206 // should be implemented at some point by letting facet managers know if | |
| 207 // data. See: https://crbug.com/478832. | |
| 208 | |
| 209 for (const auto& facet_uri : affiliated_facets) { | |
| 210 auto facet_manager_it = facet_managers_.find(facet_uri); | |
| 211 if (facet_manager_it == facet_managers_.end()) | |
| 212 continue; | |
| 213 FacetManager* facet_manager = facet_manager_it->second.get(); | |
| 214 facet_manager->OnFetchSucceeded(affiliation); | |
| 215 if (facet_manager->CanBeDiscarded()) | |
| 216 facet_managers_.erase(facet_uri); | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 // A subsequent fetch may be needed if any additional GetAffiliations() | |
| 221 // requests came in while the current fetch was in flight. | |
| 222 for (const auto& facet_manager_pair : facet_managers_) { | |
| 223 if (facet_manager_pair.second->DoesRequireFetch()) { | |
| 224 throttler_->SignalNetworkRequestNeeded(); | |
| 225 return; | |
| 226 } | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 void AffiliationBackend::OnFetchFailed() { | |
| 231 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 232 | |
| 233 fetcher_.reset(); | |
| 234 throttler_->InformOfNetworkRequestComplete(false); | |
| 235 | |
| 236 // Trigger a retry if a fetch is still needed. | |
| 237 for (const auto& facet_manager_pair : facet_managers_) { | |
| 238 if (facet_manager_pair.second->DoesRequireFetch()) { | |
| 239 throttler_->SignalNetworkRequestNeeded(); | |
| 240 return; | |
| 241 } | |
| 242 } | |
| 243 } | |
| 244 | |
| 245 void AffiliationBackend::OnMalformedResponse() { | |
| 246 DCHECK(thread_checker_ && thread_checker_->CalledOnValidThread()); | |
| 247 | |
| 248 // TODO(engedy): Potentially handle this case differently. crbug.com/437865. | |
| 249 OnFetchFailed(); | |
| 250 } | |
| 251 | |
| 252 bool AffiliationBackend::OnCanSendNetworkRequest() { | |
| 253 DCHECK(!fetcher_); | |
| 254 std::vector<FacetURI> requested_facet_uris; | |
| 255 for (const auto& facet_manager_pair : facet_managers_) { | |
| 256 if (facet_manager_pair.second->DoesRequireFetch()) | |
| 257 requested_facet_uris.push_back(facet_manager_pair.first); | |
| 258 } | |
| 259 | |
| 260 // In case a request is no longer needed, return false to indicate this. | |
| 261 if (requested_facet_uris.empty()) | |
| 262 return false; | |
| 263 | |
| 264 fetcher_.reset(AffiliationFetcher::Create(request_context_getter_.get(), | |
| 265 requested_facet_uris, this)); | |
| 266 fetcher_->StartRequest(); | |
| 267 ReportStatistics(requested_facet_uris.size()); | |
| 268 return true; | |
| 269 } | |
| 270 | |
| 271 void AffiliationBackend::ReportStatistics(size_t requested_facet_uri_count) { | |
| 272 UMA_HISTOGRAM_COUNTS_100("PasswordManager.AffiliationBackend.FetchSize", | |
| 273 requested_facet_uri_count); | |
| 274 | |
| 275 if (last_request_time_.is_null()) { | |
| 276 base::TimeDelta delay = clock_->Now() - construction_time_; | |
| 277 UMA_HISTOGRAM_CUSTOM_TIMES( | |
| 278 "PasswordManager.AffiliationBackend.FirstFetchDelay", delay, | |
| 279 base::TimeDelta::FromSeconds(1), base::TimeDelta::FromDays(3), 50); | |
| 280 } else { | |
| 281 base::TimeDelta delay = clock_->Now() - last_request_time_; | |
| 282 UMA_HISTOGRAM_CUSTOM_TIMES( | |
| 283 "PasswordManager.AffiliationBackend.SubsequentFetchDelay", delay, | |
| 284 base::TimeDelta::FromSeconds(1), base::TimeDelta::FromDays(3), 50); | |
| 285 } | |
| 286 last_request_time_ = clock_->Now(); | |
| 287 } | |
| 288 | |
| 289 void AffiliationBackend::SetThrottlerForTesting( | |
| 290 std::unique_ptr<AffiliationFetchThrottler> throttler) { | |
| 291 throttler_ = std::move(throttler); | |
| 292 } | |
| 293 | |
| 294 } // namespace password_manager | |
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Chromium Code Reviews
Issue 2950063002:
Reland 2: Move the files related to Android <-> Web credentials to a separate folder. (Closed)
