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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "modules/indexeddb/IDBFactory.h"
     31 
     32 #include "bindings/v8/ExceptionState.h"
     33 #include "bindings/v8/IDBBindingUtilities.h"
     34 #include "core/dom/Document.h"
     35 #include "core/dom/ExceptionCode.h"
     36 #include "core/page/Frame.h"
     37 #include "core/page/Page.h"
     38 #include "core/page/PageGroup.h"
     39 #include "core/platform/HistogramSupport.h"
     40 #include "core/workers/WorkerGlobalScope.h"
     41 #include "core/workers/WorkerLoaderProxy.h"
     42 #include "core/workers/WorkerThread.h"
     43 #include "modules/indexeddb/IDBDatabase.h"
     44 #include "modules/indexeddb/IDBDatabaseCallbacksImpl.h"
     45 #include "modules/indexeddb/IDBFactoryBackendInterface.h"
     46 #include "modules/indexeddb/IDBHistograms.h"
     47 #include "modules/indexeddb/IDBKey.h"
     48 #include "modules/indexeddb/IDBKeyRange.h"
     49 #include "modules/indexeddb/IDBOpenDBRequest.h"
     50 #include "modules/indexeddb/IDBTracing.h"
     51 #include "weborigin/DatabaseIdentifier.h"
     52 #include "weborigin/SecurityOrigin.h"
     53 
     54 namespace WebCore {
     55 
     56 IDBFactory::IDBFactory(IDBFactoryBackendInterface* factory)
     57     : m_backend(factory)
     58 {
     59     // We pass a reference to this object before it can be adopted.
     60     relaxAdoptionRequirement();
     61     ScriptWrappable::init(this);
     62 }
     63 
     64 IDBFactory::~IDBFactory()
     65 {
     66 }
     67 
     68 static bool isContextValid(ScriptExecutionContext* context)
     69 {
     70     ASSERT(context->isDocument() || context->isWorkerGlobalScope());
     71     if (context->isDocument()) {
     72         Document* document = toDocument(context);
     73         return document->frame() && document->page();
     74     }
     75     return true;
     76 }
     77 
     78 PassRefPtr<IDBRequest> IDBFactory::getDatabaseNames(ScriptExecutionContext* context, ExceptionState& es)
     79 {
     80     IDB_TRACE("IDBFactory::getDatabaseNames");
     81     if (!isContextValid(context))
     82         return 0;
     83     if (!context->securityOrigin()->canAccessDatabase()) {
     84         es.throwDOMException(SecurityError);
     85         return 0;
     86     }
     87 
     88     RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), 0);
     89     m_backend->getDatabaseNames(request, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
     90     return request;
     91 }
     92 
     93 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ScriptExecutionContext* context, const String& name, unsigned long long version, ExceptionState& es)
     94 {
     95     IDB_TRACE("IDBFactory::open");
     96     if (!version) {
     97         es.throwTypeError();
     98         return 0;
     99     }
    100     return openInternal(context, name, version, es);
    101 }
    102 
    103 PassRefPtr<IDBOpenDBRequest> IDBFactory::openInternal(ScriptExecutionContext* context, const String& name, int64_t version, ExceptionState& es)
    104 {
    105     HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
    106     ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
    107     if (name.isNull()) {
    108         es.throwTypeError();
    109         return 0;
    110     }
    111     if (!isContextValid(context))
    112         return 0;
    113     if (!context->securityOrigin()->canAccessDatabase()) {
    114         es.throwDOMException(SecurityError);
    115         return 0;
    116     }
    117 
    118     RefPtr<IDBDatabaseCallbacksImpl> databaseCallbacks = IDBDatabaseCallbacksImpl::create();
    119     int64_t transactionId = IDBDatabase::nextTransactionId();
    120     RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, databaseCallbacks, transactionId, version);
    121     m_backend->open(name, version, transactionId, request, databaseCallbacks, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
    122     return request;
    123 }
    124 
    125 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ScriptExecutionContext* context, const String& name, ExceptionState& es)
    126 {
    127     IDB_TRACE("IDBFactory::open");
    128     return openInternal(context, name, IDBDatabaseMetadata::NoIntVersion, es);
    129 }
    130 
    131 PassRefPtr<IDBOpenDBRequest> IDBFactory::deleteDatabase(ScriptExecutionContext* context, const String& name, ExceptionState& es)
    132 {
    133     IDB_TRACE("IDBFactory::deleteDatabase");
    134     HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
    135     if (name.isNull()) {
    136         es.throwTypeError();
    137         return 0;
    138     }
    139     if (!isContextValid(context))
    140         return 0;
    141     if (!context->securityOrigin()->canAccessDatabase()) {
    142         es.throwDOMException(SecurityError);
    143         return 0;
    144     }
    145 
    146     RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, 0, 0, IDBDatabaseMetadata::DefaultIntVersion);
    147     m_backend->deleteDatabase(name, request, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
    148     return request;
    149 }
    150 
    151 short IDBFactory::cmp(ScriptExecutionContext* context, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionState& es)
    152 {
    153     DOMRequestState requestState(context);
    154     RefPtr<IDBKey> first = scriptValueToIDBKey(&requestState, firstValue);
    155     RefPtr<IDBKey> second = scriptValueToIDBKey(&requestState, secondValue);
    156 
    157     ASSERT(first);
    158     ASSERT(second);
    159 
    160     if (!first->isValid() || !second->isValid()) {
    161         es.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
    162         return 0;
    163     }
    164 
    165     return static_cast<short>(first->compare(second.get()));
    166 }
    167 
    168 } // namespace WebCore
    169