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| 1 // Copyright 2014 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/extensions/extension_garbage_collector.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/file_util.h" | |
| 9 #include "base/files/file_enumerator.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/message_loop/message_loop.h" | |
| 13 #include "base/sequenced_task_runner.h" | |
| 14 #include "base/strings/string_util.h" | |
| 15 #include "base/strings/utf_string_conversions.h" | |
| 16 #include "base/time/time.h" | |
| 17 #include "chrome/browser/extensions/extension_service.h" | |
| 18 #include "chrome/browser/extensions/extension_util.h" | |
| 19 #include "chrome/browser/extensions/pending_extension_manager.h" | |
| 20 #include "chrome/common/extensions/extension_file_util.h" | |
| 21 #include "chrome/common/extensions/manifest_handlers/app_isolation_info.h" | |
| 22 #include "content/public/browser/browser_context.h" | |
| 23 #include "content/public/browser/browser_thread.h" | |
| 24 #include "content/public/browser/storage_partition.h" | |
| 25 #include "extensions/browser/extension_prefs.h" | |
| 26 #include "extensions/browser/extension_registry.h" | |
| 27 #include "extensions/browser/extension_system.h" | |
| 28 #include "extensions/common/extension.h" | |
| 29 | |
| 30 namespace extensions { | |
| 31 | |
| 32 namespace { | |
| 33 | |
| 34 // Wait this many seconds before trying to garbage collect extensions again. | |
| 35 const int kGarbageCollectRetryDelayInSeconds = 30; | |
| 36 | |
| 37 // Wait this many seconds after startup to see if there are any extensions | |
| 38 // which can be garbage collected. | |
| 39 const int kGarbageCollectStartupDelay = 30; | |
| 40 | |
| 41 typedef std::multimap<std::string, base::FilePath> ExtensionPathsMultimap; | |
| 42 | |
| 43 void CheckExtensionDirectory(const base::FilePath& path, | |
| 44 const ExtensionPathsMultimap& extension_paths, | |
| 45 bool clean_temp_dir) { | |
| 46 base::FilePath basename = path.BaseName(); | |
| 47 // Clean up temporary files left if Chrome crashed or quit in the middle | |
| 48 // of an extension install. | |
| 49 if (basename.value() == extension_file_util::kTempDirectoryName) { | |
| 50 if (clean_temp_dir) | |
| 51 base::DeleteFile(path, true); // Recursive. | |
| 52 return; | |
| 53 } | |
| 54 | |
| 55 // Parse directory name as a potential extension ID. | |
| 56 std::string extension_id; | |
| 57 if (IsStringASCII(basename.value())) { | |
| 58 extension_id = base::UTF16ToASCII(basename.LossyDisplayName()); | |
| 59 if (!Extension::IdIsValid(extension_id)) | |
| 60 extension_id.clear(); | |
| 61 } | |
| 62 | |
| 63 // Delete directories that aren't valid IDs. | |
| 64 if (extension_id.empty()) { | |
| 65 base::DeleteFile(path, true); // Recursive. | |
| 66 return; | |
| 67 } | |
| 68 | |
| 69 typedef ExtensionPathsMultimap::const_iterator Iter; | |
| 70 std::pair<Iter, Iter> iter_pair = extension_paths.equal_range(extension_id); | |
| 71 | |
| 72 // If there is no entry in the prefs file, just delete the directory and | |
| 73 // move on. This can legitimately happen when an uninstall does not | |
| 74 // complete, for example, when a plugin is in use at uninstall time. | |
| 75 if (iter_pair.first == iter_pair.second) { | |
| 76 base::DeleteFile(path, true); // Recursive. | |
| 77 return; | |
| 78 } | |
| 79 | |
| 80 // Clean up old version directories. | |
| 81 base::FileEnumerator versions_enumerator( | |
| 82 path, false /* Not recursive */, base::FileEnumerator::DIRECTORIES); | |
| 83 for (base::FilePath version_dir = versions_enumerator.Next(); | |
| 84 !version_dir.empty(); | |
| 85 version_dir = versions_enumerator.Next()) { | |
| 86 bool known_version = false; | |
| 87 for (Iter iter = iter_pair.first; iter != iter_pair.second; ++iter) { | |
| 88 if (version_dir.BaseName() == iter->second.BaseName()) { | |
| 89 known_version = true; | |
| 90 break; | |
| 91 } | |
| 92 } | |
| 93 if (!known_version) | |
| 94 base::DeleteFile(version_dir, true); // Recursive. | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 } // namespace | |
| 99 | |
| 100 ExtensionGarbageCollector::ExtensionGarbageCollector( | |
| 101 ExtensionService* extension_service) | |
| 102 : extension_service_(extension_service), | |
| 103 context_(extension_service->GetBrowserContext()), | |
| 104 install_directory_(extension_service->install_directory()), | |
| 105 weak_factory_(this) { | |
| 106 #if defined(OS_CHROMEOS) | |
| 107 disable_garbage_collection_ = false; | |
| 108 #endif | |
| 109 | |
| 110 ExtensionSystem* extension_system = ExtensionSystem::Get(context_); | |
| 111 DCHECK(extension_system); | |
| 112 | |
| 113 extension_system->ready().PostDelayed( | |
| 114 FROM_HERE, | |
| 115 base::Bind(&ExtensionGarbageCollector::GarbageCollectExtensions, | |
| 116 weak_factory_.GetWeakPtr()), | |
| 117 base::TimeDelta::FromSeconds(kGarbageCollectStartupDelay)); | |
| 118 | |
| 119 extension_system->ready().Post( | |
| 120 FROM_HERE, | |
| 121 base::Bind( | |
| 122 &ExtensionGarbageCollector::GarbageCollectIsolatedStorageIfNeeded, | |
| 123 weak_factory_.GetWeakPtr())); | |
| 124 } | |
| 125 | |
| 126 ExtensionGarbageCollector::~ExtensionGarbageCollector() {} | |
| 127 | |
| 128 void ExtensionGarbageCollector::GarbageCollectExtensionsForTest() { | |
| 129 GarbageCollectExtensions(); | |
| 130 } | |
| 131 | |
| 132 void ExtensionGarbageCollector::GarbageCollectExtensions() { | |
| 133 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); | |
| 134 | |
| 135 #if defined(OS_CHROMEOS) | |
| 136 if (disable_garbage_collection_) | |
| 137 return; | |
| 138 #endif | |
| 139 | |
| 140 ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(context_); | |
| 141 DCHECK(extension_prefs); | |
| 142 | |
| 143 if (extension_prefs->pref_service()->ReadOnly()) | |
| 144 return; | |
| 145 | |
| 146 bool clean_temp_dir = true; | |
| 147 | |
| 148 if (extension_service_->pending_extension_manager()->HasPendingExtensions()) { | |
| 149 // Don't garbage collect temp dir while there are pending installations, | |
| 150 // which may be using the temporary installation directory. Try to garbage | |
| 151 // collect again later. | |
| 152 clean_temp_dir = false; | |
| 153 base::MessageLoop::current()->PostDelayedTask( | |
| 154 FROM_HERE, | |
| 155 base::Bind(&ExtensionGarbageCollector::GarbageCollectExtensions, | |
| 156 weak_factory_.GetWeakPtr()), | |
| 157 base::TimeDelta::FromSeconds(kGarbageCollectRetryDelayInSeconds)); | |
| 158 } | |
| 159 | |
| 160 scoped_ptr<ExtensionPrefs::ExtensionsInfo> info( | |
| 161 extension_prefs->GetInstalledExtensionsInfo()); | |
| 162 std::multimap<std::string, base::FilePath> extension_paths; | |
| 163 for (size_t i = 0; i < info->size(); ++i) { | |
| 164 extension_paths.insert( | |
| 165 std::make_pair(info->at(i)->extension_id, info->at(i)->extension_path)); | |
| 166 } | |
| 167 | |
| 168 info = extension_prefs->GetAllDelayedInstallInfo(); | |
| 169 for (size_t i = 0; i < info->size(); ++i) { | |
| 170 extension_paths.insert( | |
| 171 std::make_pair(info->at(i)->extension_id, info->at(i)->extension_path)); | |
| 172 } | |
| 173 | |
| 174 if (!extension_service_->GetFileTaskRunner()->PostTask( | |
| 175 FROM_HERE, | |
| 176 base::Bind( | |
| 177 &ExtensionGarbageCollector::GarbageCollectExtensionsOnFileThread, | |
| 178 weak_factory_.GetWeakPtr(), | |
| 179 extension_paths, | |
| 180 clean_temp_dir))) { | |
| 181 NOTREACHED(); | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 void ExtensionGarbageCollector::GarbageCollectIsolatedStorageIfNeeded() { | |
| 186 ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(context_); | |
| 187 DCHECK(extension_prefs); | |
| 188 if (!extension_prefs->NeedsStorageGarbageCollection()) | |
| 189 return; | |
| 190 extension_prefs->SetNeedsStorageGarbageCollection(false); | |
| 191 | |
| 192 scoped_ptr<base::hash_set<base::FilePath> > active_paths( | |
| 193 new base::hash_set<base::FilePath>()); | |
| 194 const ExtensionSet& extensions = | |
| 195 ExtensionRegistry::Get(context_)->enabled_extensions(); | |
| 196 for (ExtensionSet::const_iterator iter = extensions.begin(); | |
| 197 iter != extensions.end(); | |
| 198 ++iter) { | |
| 199 if (AppIsolationInfo::HasIsolatedStorage(iter->get())) { | |
| 200 active_paths->insert( | |
| 201 content::BrowserContext::GetStoragePartitionForSite( | |
| 202 context_, util::GetSiteForExtensionId((*iter)->id(), context_)) | |
| 203 ->GetPath()); | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 // The data of ephemeral apps can outlive their cache lifetime. Ensure | |
| 208 // they are not garbage collected. | |
| 209 scoped_ptr<ExtensionPrefs::ExtensionsInfo> evicted_apps_info( | |
| 210 extension_prefs->GetEvictedEphemeralAppsInfo()); | |
| 211 for (size_t i = 0; i < evicted_apps_info->size(); ++i) { | |
| 212 ExtensionInfo* info = evicted_apps_info->at(i).get(); | |
| 213 if (util::HasIsolatedStorage(*info)) { | |
| 214 active_paths->insert(content::BrowserContext::GetStoragePartitionForSite( | |
| 215 context_, | |
| 216 util::GetSiteForExtensionId( | |
| 217 info->extension_id, context_))->GetPath()); | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 extension_service_->OnGarbageCollectIsolatedStorageStart(); | |
| 222 content::BrowserContext::GarbageCollectStoragePartitions( | |
| 223 context_, | |
| 224 active_paths.Pass(), | |
| 225 base::Bind(&ExtensionService::OnGarbageCollectIsolatedStorageFinished, | |
| 226 extension_service_->AsWeakPtr())); | |
| 227 } | |
| 228 | |
| 229 void ExtensionGarbageCollector::GarbageCollectExtensionsOnFileThread( | |
| 230 const ExtensionPathsMultimap& extension_paths, | |
| 231 bool clean_temp_dir) { | |
| 232 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE)); | |
| 233 | |
| 234 // Nothing to clean up if it doesn't exist. | |
| 235 if (!base::DirectoryExists(install_directory_)) | |
| 236 return; | |
| 237 | |
| 238 base::FileEnumerator enumerator(install_directory_, | |
| 239 false, // Not recursive. | |
| 240 base::FileEnumerator::DIRECTORIES); | |
| 241 | |
| 242 for (base::FilePath extension_path = enumerator.Next(); | |
| 243 !extension_path.empty(); | |
| 244 extension_path = enumerator.Next()) { | |
| 245 CheckExtensionDirectory(extension_path, extension_paths, clean_temp_dir); | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 } // namespace extensions | |
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Chromium Code Reviews
Issue 217233004:
Revert of Remove ExtensionService Garbage-Collecting methods. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master