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 "IDBFactory.h"
31
32#if ENABLE(INDEXED_DATABASE)
33
34#include "Document.h"
35#include "ExceptionCode.h"
36#include "Frame.h"
37#include "GroupSettings.h"
38#include "HistogramSupport.h"
39#include "IDBBindingUtilities.h"
40#include "IDBDatabase.h"
41#include "IDBDatabaseCallbacksImpl.h"
42#include "IDBDatabaseException.h"
43#include "IDBFactoryBackendInterface.h"
44#include "IDBHistograms.h"
45#include "IDBKey.h"
46#include "IDBKeyRange.h"
47#include "IDBOpenDBRequest.h"
48#include "IDBTracing.h"
49#include "Page.h"
50#include "PageGroup.h"
51#include "SecurityOrigin.h"
52#include "WorkerContext.h"
53#include "WorkerLoaderProxy.h"
54#include "WorkerThread.h"
55
56namespace WebCore {
57
58IDBFactory::IDBFactory(IDBFactoryBackendInterface* factory)
59    : m_backend(factory)
60{
61    // We pass a reference to this object before it can be adopted.
62    relaxAdoptionRequirement();
63}
64
65IDBFactory::~IDBFactory()
66{
67}
68
69namespace {
70static bool isContextValid(ScriptExecutionContext* context)
71{
72    ASSERT(context->isDocument() || context->isWorkerContext());
73    if (context->isDocument()) {
74        Document* document = toDocument(context);
75        return document->frame() && document->page();
76    }
77#if !ENABLE(WORKERS)
78    if (context->isWorkerContext())
79        return false;
80#endif
81    return true;
82}
83
84static String getIndexedDBDatabasePath(ScriptExecutionContext* context)
85{
86    ASSERT(isContextValid(context));
87    if (context->isDocument()) {
88        Document* document = toDocument(context);
89        return document->page()->group().groupSettings()->indexedDBDatabasePath();
90    }
91#if ENABLE(WORKERS)
92    WorkerContext* workerContext = static_cast<WorkerContext*>(context);
93    const GroupSettings* groupSettings = workerContext->groupSettings();
94    if (groupSettings)
95        return groupSettings->indexedDBDatabasePath();
96#endif
97    return String();
98}
99}
100
101PassRefPtr<IDBRequest> IDBFactory::getDatabaseNames(ScriptExecutionContext* context, ExceptionCode& ec)
102{
103    IDB_TRACE("IDBFactory::getDatabaseNames");
104    if (!isContextValid(context))
105        return 0;
106    if (!context->securityOrigin()->canAccessDatabase(context->topOrigin())) {
107        ec = SECURITY_ERR;
108        return 0;
109    }
110
111    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), 0);
112    m_backend->getDatabaseNames(request, context->securityOrigin(), context, getIndexedDBDatabasePath(context));
113    return request;
114}
115
116PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ScriptExecutionContext* context, const String& name, unsigned long long version, ExceptionCode& ec)
117{
118    IDB_TRACE("IDBFactory::open");
119    if (!version) {
120        ec = TypeError;
121        return 0;
122    }
123    return openInternal(context, name, version, ec);
124}
125
126PassRefPtr<IDBOpenDBRequest> IDBFactory::openInternal(ScriptExecutionContext* context, const String& name, int64_t version, ExceptionCode& ec)
127{
128    HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
129    ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
130    if (name.isNull()) {
131        ec = TypeError;
132        return 0;
133    }
134    if (!isContextValid(context))
135        return 0;
136    if (!context->securityOrigin()->canAccessDatabase(context->topOrigin())) {
137        ec = SECURITY_ERR;
138        return 0;
139    }
140
141    RefPtr<IDBDatabaseCallbacksImpl> databaseCallbacks = IDBDatabaseCallbacksImpl::create();
142    int64_t transactionId = IDBDatabase::nextTransactionId();
143    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, databaseCallbacks, transactionId, version);
144    m_backend->open(name, version, transactionId, request, databaseCallbacks, context->securityOrigin(), context, getIndexedDBDatabasePath(context));
145    return request;
146}
147
148PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ScriptExecutionContext* context, const String& name, ExceptionCode& ec)
149{
150    IDB_TRACE("IDBFactory::open");
151    return openInternal(context, name, IDBDatabaseMetadata::NoIntVersion, ec);
152}
153
154PassRefPtr<IDBOpenDBRequest> IDBFactory::deleteDatabase(ScriptExecutionContext* context, const String& name, ExceptionCode& ec)
155{
156    IDB_TRACE("IDBFactory::deleteDatabase");
157    HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
158    if (name.isNull()) {
159        ec = TypeError;
160        return 0;
161    }
162    if (!isContextValid(context))
163        return 0;
164    if (!context->securityOrigin()->canAccessDatabase(context->topOrigin())) {
165        ec = SECURITY_ERR;
166        return 0;
167    }
168
169    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, 0, 0, IDBDatabaseMetadata::DefaultIntVersion);
170    m_backend->deleteDatabase(name, request, context->securityOrigin(), context, getIndexedDBDatabasePath(context));
171    return request;
172}
173
174short IDBFactory::cmp(ScriptExecutionContext* context, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionCode& ec)
175{
176    DOMRequestState requestState(context);
177    RefPtr<IDBKey> first = scriptValueToIDBKey(&requestState, firstValue);
178    RefPtr<IDBKey> second = scriptValueToIDBKey(&requestState, secondValue);
179
180    ASSERT(first);
181    ASSERT(second);
182
183    if (!first->isValid() || !second->isValid()) {
184        ec = IDBDatabaseException::DataError;
185        return 0;
186    }
187
188    return static_cast<short>(first->compare(second.get()));
189}
190
191} // namespace WebCore
192
193#endif // ENABLE(INDEXED_DATABASE)
194