| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "modules/webdatabase/DatabaseTracker.h" |
| |
| #include "core/dom/ScriptExecutionContext.h" |
| #include "core/platform/sql/SQLiteFileSystem.h" |
| #include "modules/webdatabase/DatabaseBackendBase.h" |
| #include "modules/webdatabase/DatabaseBackendContext.h" |
| #include "modules/webdatabase/DatabaseObserver.h" |
| #include "modules/webdatabase/QuotaTracker.h" |
| #include "weborigin/DatabaseIdentifier.h" |
| #include "weborigin/SecurityOrigin.h" |
| #include "weborigin/SecurityOriginHash.h" |
| #include "wtf/Assertions.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WebCore { |
| |
| DatabaseTracker& DatabaseTracker::tracker() |
| { |
| AtomicallyInitializedStatic(DatabaseTracker&, tracker = *new DatabaseTracker()); |
| return tracker; |
| } |
| |
| DatabaseTracker::DatabaseTracker() |
| { |
| SQLiteFileSystem::registerSQLiteVFS(); |
| } |
| |
| bool DatabaseTracker::canEstablishDatabase(DatabaseBackendContext* databaseContext, const String& name, const String& displayName, unsigned long estimatedSize, DatabaseError& error) |
| { |
| ScriptExecutionContext* scriptExecutionContext = databaseContext->scriptExecutionContext(); |
| bool success = DatabaseObserver::canEstablishDatabase(scriptExecutionContext, name, displayName, estimatedSize); |
| if (!success) |
| error = DatabaseError::GenericSecurityError; |
| return success; |
| } |
| |
| String DatabaseTracker::fullPathForDatabase(SecurityOrigin* origin, const String& name, bool) |
| { |
| return createDatabaseIdentifierFromSecurityOrigin(origin) + "/" + name + "#"; |
| } |
| |
| void DatabaseTracker::addOpenDatabase(DatabaseBackendBase* database) |
| { |
| MutexLocker openDatabaseMapLock(m_openDatabaseMapGuard); |
| if (!m_openDatabaseMap) |
| m_openDatabaseMap = adoptPtr(new DatabaseOriginMap); |
| |
| String originIdentifier = createDatabaseIdentifierFromSecurityOrigin(database->securityOrigin()); |
| DatabaseNameMap* nameMap = m_openDatabaseMap->get(originIdentifier); |
| if (!nameMap) { |
| nameMap = new DatabaseNameMap(); |
| m_openDatabaseMap->set(originIdentifier, nameMap); |
| } |
| |
| String name(database->stringIdentifier()); |
| DatabaseSet* databaseSet = nameMap->get(name); |
| if (!databaseSet) { |
| databaseSet = new DatabaseSet(); |
| nameMap->set(name, databaseSet); |
| } |
| |
| databaseSet->add(database); |
| } |
| |
| class NotifyDatabaseObserverOnCloseTask : public ScriptExecutionContext::Task { |
| public: |
| static PassOwnPtr<NotifyDatabaseObserverOnCloseTask> create(PassRefPtr<DatabaseBackendBase> database) |
| { |
| return adoptPtr(new NotifyDatabaseObserverOnCloseTask(database)); |
| } |
| |
| virtual void performTask(ScriptExecutionContext* context) |
| { |
| DatabaseObserver::databaseClosed(m_database.get()); |
| } |
| |
| virtual bool isCleanupTask() const |
| { |
| return true; |
| } |
| |
| private: |
| NotifyDatabaseObserverOnCloseTask(PassRefPtr<DatabaseBackendBase> database) |
| : m_database(database) |
| { |
| } |
| |
| RefPtr<DatabaseBackendBase> m_database; |
| }; |
| |
| void DatabaseTracker::removeOpenDatabase(DatabaseBackendBase* database) |
| { |
| String originIdentifier = createDatabaseIdentifierFromSecurityOrigin(database->securityOrigin()); |
| MutexLocker openDatabaseMapLock(m_openDatabaseMapGuard); |
| ASSERT(m_openDatabaseMap); |
| DatabaseNameMap* nameMap = m_openDatabaseMap->get(originIdentifier); |
| if (!nameMap) |
| return; |
| |
| String name(database->stringIdentifier()); |
| DatabaseSet* databaseSet = nameMap->get(name); |
| if (!databaseSet) |
| return; |
| |
| DatabaseSet::iterator found = databaseSet->find(database); |
| if (found == databaseSet->end()) |
| return; |
| |
| databaseSet->remove(found); |
| if (databaseSet->isEmpty()) { |
| nameMap->remove(name); |
| delete databaseSet; |
| if (nameMap->isEmpty()) { |
| m_openDatabaseMap->remove(originIdentifier); |
| delete nameMap; |
| } |
| } |
| |
| ScriptExecutionContext* scriptExecutionContext = database->databaseContext()->scriptExecutionContext(); |
| if (!scriptExecutionContext->isContextThread()) |
| scriptExecutionContext->postTask(NotifyDatabaseObserverOnCloseTask::create(database)); |
| else |
| DatabaseObserver::databaseClosed(database); |
| } |
| |
| void DatabaseTracker::prepareToOpenDatabase(DatabaseBackendBase* database) |
| { |
| ASSERT(database->databaseContext()->scriptExecutionContext()->isContextThread()); |
| DatabaseObserver::databaseOpened(database); |
| } |
| |
| void DatabaseTracker::failedToOpenDatabase(DatabaseBackendBase* database) |
| { |
| ScriptExecutionContext* scriptExecutionContext = database->databaseContext()->scriptExecutionContext(); |
| if (!scriptExecutionContext->isContextThread()) |
| scriptExecutionContext->postTask(NotifyDatabaseObserverOnCloseTask::create(database)); |
| else |
| DatabaseObserver::databaseClosed(database); |
| } |
| |
| unsigned long long DatabaseTracker::getMaxSizeForDatabase(const DatabaseBackendBase* database) |
| { |
| unsigned long long spaceAvailable = 0; |
| unsigned long long databaseSize = 0; |
| QuotaTracker::instance().getDatabaseSizeAndSpaceAvailableToOrigin( |
| createDatabaseIdentifierFromSecurityOrigin(database->securityOrigin()), |
| database->stringIdentifier(), &databaseSize, &spaceAvailable); |
| return databaseSize + spaceAvailable; |
| } |
| |
| void DatabaseTracker::interruptAllDatabasesForContext(const DatabaseBackendContext* context) |
| { |
| MutexLocker openDatabaseMapLock(m_openDatabaseMapGuard); |
| |
| if (!m_openDatabaseMap) |
| return; |
| |
| DatabaseNameMap* nameMap = m_openDatabaseMap->get(createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin())); |
| if (!nameMap) |
| return; |
| |
| DatabaseNameMap::const_iterator dbNameMapEndIt = nameMap->end(); |
| for (DatabaseNameMap::const_iterator dbNameMapIt = nameMap->begin(); dbNameMapIt != dbNameMapEndIt; ++dbNameMapIt) { |
| DatabaseSet* databaseSet = dbNameMapIt->value; |
| DatabaseSet::const_iterator end = databaseSet->end(); |
| for (DatabaseSet::const_iterator it = databaseSet->begin(); it != end; ++it) { |
| if ((*it)->databaseContext() == context) |
| (*it)->interrupt(); |
| } |
| } |
| } |
| |
| class DatabaseTracker::CloseOneDatabaseImmediatelyTask : public ScriptExecutionContext::Task { |
| public: |
| static PassOwnPtr<CloseOneDatabaseImmediatelyTask> create(const String& originIdentifier, const String& name, DatabaseBackendBase* database) |
| { |
| return adoptPtr(new CloseOneDatabaseImmediatelyTask(originIdentifier, name, database)); |
| } |
| |
| virtual void performTask(ScriptExecutionContext* context) |
| { |
| DatabaseTracker::tracker().closeOneDatabaseImmediately(m_originIdentifier, m_name, m_database); |
| } |
| |
| private: |
| CloseOneDatabaseImmediatelyTask(const String& originIdentifier, const String& name, DatabaseBackendBase* database) |
| : m_originIdentifier(originIdentifier.isolatedCopy()) |
| , m_name(name.isolatedCopy()) |
| , m_database(database) |
| { |
| } |
| |
| String m_originIdentifier; |
| String m_name; |
| DatabaseBackendBase* m_database; // Intentionally a raw pointer. |
| }; |
| |
| void DatabaseTracker::closeDatabasesImmediately(const String& originIdentifier, const String& name) |
| { |
| MutexLocker openDatabaseMapLock(m_openDatabaseMapGuard); |
| if (!m_openDatabaseMap) |
| return; |
| |
| DatabaseNameMap* nameMap = m_openDatabaseMap->get(originIdentifier); |
| if (!nameMap) |
| return; |
| |
| DatabaseSet* databaseSet = nameMap->get(name); |
| if (!databaseSet) |
| return; |
| |
| // We have to call closeImmediately() on the context thread and we cannot safely add a reference to |
| // the database in our collection when not on the context thread (which is always the case given |
| // current usage). |
| for (DatabaseSet::iterator it = databaseSet->begin(); it != databaseSet->end(); ++it) |
| (*it)->databaseContext()->scriptExecutionContext()->postTask(CloseOneDatabaseImmediatelyTask::create(originIdentifier, name, *it)); |
| } |
| |
| void DatabaseTracker::closeOneDatabaseImmediately(const String& originIdentifier, const String& name, DatabaseBackendBase* database) |
| { |
| // First we have to confirm the 'database' is still in our collection. |
| { |
| MutexLocker openDatabaseMapLock(m_openDatabaseMapGuard); |
| if (!m_openDatabaseMap) |
| return; |
| |
| DatabaseNameMap* nameMap = m_openDatabaseMap->get(originIdentifier); |
| if (!nameMap) |
| return; |
| |
| DatabaseSet* databaseSet = nameMap->get(name); |
| if (!databaseSet) |
| return; |
| |
| DatabaseSet::iterator found = databaseSet->find(database); |
| if (found == databaseSet->end()) |
| return; |
| } |
| |
| // And we have to call closeImmediately() without our collection lock being held. |
| database->closeImmediately(); |
| } |
| |
| } |