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/core/v8/ExceptionState.h"
33#include "bindings/modules/v8/IDBBindingUtilities.h"
34#include "core/dom/Document.h"
35#include "core/dom/ExceptionCode.h"
36#include "modules/indexeddb/IDBDatabase.h"
37#include "modules/indexeddb/IDBDatabaseCallbacks.h"
38#include "modules/indexeddb/IDBHistograms.h"
39#include "modules/indexeddb/IDBKey.h"
40#include "modules/indexeddb/IDBTracing.h"
41#include "modules/indexeddb/IndexedDBClient.h"
42#include "modules/indexeddb/WebIDBCallbacksImpl.h"
43#include "modules/indexeddb/WebIDBDatabaseCallbacksImpl.h"
44#include "platform/weborigin/DatabaseIdentifier.h"
45#include "platform/weborigin/SecurityOrigin.h"
46#include "public/platform/Platform.h"
47#include "public/platform/WebIDBFactory.h"
48
49namespace blink {
50
51static const char permissionDeniedErrorMessage[] = "The user denied permission to access the database.";
52
53IDBFactory::IDBFactory(IndexedDBClient* permissionClient)
54    : m_permissionClient(permissionClient)
55{
56}
57
58void IDBFactory::trace(Visitor* visitor)
59{
60    visitor->trace(m_permissionClient);
61}
62
63static bool isContextValid(ExecutionContext* context)
64{
65    ASSERT(context->isDocument() || context->isWorkerGlobalScope());
66    if (context->isDocument()) {
67        Document* document = toDocument(context);
68        return document->frame() && document->page();
69    }
70    return true;
71}
72
73IDBRequest* IDBFactory::getDatabaseNames(ScriptState* scriptState, ExceptionState& exceptionState)
74{
75    IDB_TRACE("IDBFactory::getDatabaseNames");
76    if (!isContextValid(scriptState->executionContext()))
77        return nullptr;
78    if (!scriptState->executionContext()->securityOrigin()->canAccessDatabase()) {
79        exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
80        return 0;
81    }
82
83    IDBRequest* request = IDBRequest::create(scriptState, IDBAny::createNull(), 0);
84
85    if (!m_permissionClient->allowIndexedDB(scriptState->executionContext(), "Database Listing")) {
86        request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
87        return request;
88    }
89
90    Platform::current()->idbFactory()->getDatabaseNames(WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(scriptState->executionContext()->securityOrigin()));
91    return request;
92}
93
94IDBOpenDBRequest* IDBFactory::open(ScriptState* scriptState, const String& name, unsigned long long version, ExceptionState& exceptionState)
95{
96    IDB_TRACE("IDBFactory::open");
97    if (!version) {
98        exceptionState.throwTypeError("The version provided must not be 0.");
99        return 0;
100    }
101    return openInternal(scriptState, name, version, exceptionState);
102}
103
104IDBOpenDBRequest* IDBFactory::openInternal(ScriptState* scriptState, const String& name, int64_t version, ExceptionState& exceptionState)
105{
106    Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
107    ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
108    if (name.isNull()) {
109        exceptionState.throwTypeError("The name provided must not be empty.");
110        return 0;
111    }
112    if (!isContextValid(scriptState->executionContext()))
113        return nullptr;
114    if (!scriptState->executionContext()->securityOrigin()->canAccessDatabase()) {
115        exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
116        return 0;
117    }
118
119    IDBDatabaseCallbacks* databaseCallbacks = IDBDatabaseCallbacks::create();
120    int64_t transactionId = IDBDatabase::nextTransactionId();
121    IDBOpenDBRequest* request = IDBOpenDBRequest::create(scriptState, databaseCallbacks, transactionId, version);
122
123    if (!m_permissionClient->allowIndexedDB(scriptState->executionContext(), name)) {
124        request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
125        return request;
126    }
127
128    Platform::current()->idbFactory()->open(name, version, transactionId, WebIDBCallbacksImpl::create(request).leakPtr(), WebIDBDatabaseCallbacksImpl::create(databaseCallbacks).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(scriptState->executionContext()->securityOrigin()));
129    return request;
130}
131
132IDBOpenDBRequest* IDBFactory::open(ScriptState* scriptState, const String& name, ExceptionState& exceptionState)
133{
134    IDB_TRACE("IDBFactory::open");
135    return openInternal(scriptState, name, IDBDatabaseMetadata::NoIntVersion, exceptionState);
136}
137
138IDBOpenDBRequest* IDBFactory::deleteDatabase(ScriptState* scriptState, const String& name, ExceptionState& exceptionState)
139{
140    IDB_TRACE("IDBFactory::deleteDatabase");
141    Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
142    if (name.isNull()) {
143        exceptionState.throwTypeError("The name provided must not be empty.");
144        return 0;
145    }
146    if (!isContextValid(scriptState->executionContext()))
147        return nullptr;
148    if (!scriptState->executionContext()->securityOrigin()->canAccessDatabase()) {
149        exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
150        return 0;
151    }
152
153    IDBOpenDBRequest* request = IDBOpenDBRequest::create(scriptState, nullptr, 0, IDBDatabaseMetadata::DefaultIntVersion);
154
155    if (!m_permissionClient->allowIndexedDB(scriptState->executionContext(), name)) {
156        request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
157        return request;
158    }
159
160    Platform::current()->idbFactory()->deleteDatabase(name, WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(scriptState->executionContext()->securityOrigin()));
161    return request;
162}
163
164short IDBFactory::cmp(ScriptState* scriptState, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionState& exceptionState)
165{
166    IDBKey* first = scriptValueToIDBKey(scriptState->isolate(), firstValue);
167    IDBKey* second = scriptValueToIDBKey(scriptState->isolate(), secondValue);
168
169    ASSERT(first);
170    ASSERT(second);
171
172    if (!first->isValid() || !second->isValid()) {
173        exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
174        return 0;
175    }
176
177    return static_cast<short>(first->compare(second));
178}
179
180} // namespace blink
181