src/third_party/WebKit/Source/modules/indexeddb/IDBFactory.cpp

   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
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  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 "modules/indexeddb/IDBDatabase.h"
  37 #include "modules/indexeddb/IDBDatabaseCallbacks.h"
  38 #include "modules/indexeddb/IDBFactoryBackendInterface.h"
  39 #include "modules/indexeddb/IDBHistograms.h"
  40 #include "modules/indexeddb/IDBKey.h"
  41 #include "modules/indexeddb/IDBTracing.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
  49 namespace WebCore {
  50
  51 static const char permissionDeniedErrorMessage[] = "The user denied permission to access the database.";
  52
  53 IDBFactory::IDBFactory(IDBFactoryBackendInterface* permissionClient)
  54     : m_permissionClient(permissionClient)
  55 {
  56     // We pass a reference to this object before it can be adopted.
  57     relaxAdoptionRequirement();
  58     ScriptWrappable::init(this);
  59 }
  60
  61 IDBFactory::~IDBFactory()
  62 {
  63 }
  64
  65 static bool isContextValid(ExecutionContext* context)
  66 {
  67     ASSERT(context->isDocument() || context->isWorkerGlobalScope());
  68     if (context->isDocument()) {
  69         Document* document = toDocument(context);
  70         return document->frame() && document->page();
  71     }
  72     return true;
  73 }
  74
  75 PassRefPtr<IDBRequest> IDBFactory::getDatabaseNames(ExecutionContext* context, ExceptionState& exceptionState)
  76 {
  77     IDB_TRACE("IDBFactory::getDatabaseNames");
  78     if (!isContextValid(context))
  79         return 0;
  80     if (!context->securityOrigin()->canAccessDatabase()) {
  81         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
  82         return 0;
  83     }
  84
  85     RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::createNull(), 0);
  86
  87     if (!m_permissionClient->allowIndexedDB(context, "Database Listing")) {
  88         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
  89         return request;
  90     }
  91
  92     blink::Platform::current()->idbFactory()->getDatabaseNames(WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
  93     return request;
  94 }
  95
  96 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, unsigned long long version, ExceptionState& exceptionState)
  97 {
  98     IDB_TRACE("IDBFactory::open");
  99     if (!version) {
 100         exceptionState.throwTypeError("The version provided must not be 0.");
 101         return 0;
 102     }
 103     return openInternal(context, name, version, exceptionState);
 104 }
 105
 106 PassRefPtr<IDBOpenDBRequest> IDBFactory::openInternal(ExecutionContext* context, const String& name, int64_t version, ExceptionState& exceptionState)
 107 {
 108     blink::Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
 109     ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
 110     if (name.isNull()) {
 111         exceptionState.throwTypeError("The name provided must not be empty.");
 112         return 0;
 113     }
 114     if (!isContextValid(context))
 115         return 0;
 116     if (!context->securityOrigin()->canAccessDatabase()) {
 117         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
 118         return 0;
 119     }
 120
 121     RefPtr<IDBDatabaseCallbacks> databaseCallbacks = IDBDatabaseCallbacks::create();
 122     int64_t transactionId = IDBDatabase::nextTransactionId();
 123     RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, databaseCallbacks, transactionId, version);
 124
 125     if (!m_permissionClient->allowIndexedDB(context, name)) {
 126         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
 127         return request;
 128     }
 129
 130     blink::Platform::current()->idbFactory()->open(name, version, transactionId, WebIDBCallbacksImpl::create(request).leakPtr(), WebIDBDatabaseCallbacksImpl::create(databaseCallbacks.release()).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
 131     return request;
 132 }
 133
 134 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, ExceptionState& exceptionState)
 135 {
 136     IDB_TRACE("IDBFactory::open");
 137     return openInternal(context, name, IDBDatabaseMetadata::NoIntVersion, exceptionState);
 138 }
 139
 140 PassRefPtr<IDBOpenDBRequest> IDBFactory::deleteDatabase(ExecutionContext* context, const String& name, ExceptionState& exceptionState)
 141 {
 142     IDB_TRACE("IDBFactory::deleteDatabase");
 143     blink::Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
 144     if (name.isNull()) {
 145         exceptionState.throwTypeError("The name provided must not be empty.");
 146         return 0;
 147     }
 148     if (!isContextValid(context))
 149         return 0;
 150     if (!context->securityOrigin()->canAccessDatabase()) {
 151         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
 152         return 0;
 153     }
 154
 155     RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, 0, 0, IDBDatabaseMetadata::DefaultIntVersion);
 156
 157     if (!m_permissionClient->allowIndexedDB(context, name)) {
 158         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
 159         return request;
 160     }
 161
 162     blink::Platform::current()->idbFactory()->deleteDatabase(name, WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
 163     return request;
 164 }
 165
 166 short IDBFactory::cmp(ExecutionContext* context, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionState& exceptionState)
 167 {
 168     DOMRequestState requestState(context);
 169     RefPtr<IDBKey> first = scriptValueToIDBKey(&requestState, firstValue);
 170     RefPtr<IDBKey> second = scriptValueToIDBKey(&requestState, secondValue);
 171
 172     ASSERT(first);
 173     ASSERT(second);
 174
 175     if (!first->isValid() || !second->isValid()) {
 176         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
 177         return 0;
 178     }
 179
 180     return static_cast<short>(first->compare(second.get()));
 181 }
 182
 183 } // namespace WebCore