Source/modules/indexeddb/IDBFactory.cpp

/*
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 *     from this software without specific prior written permission.
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#include "config.h"
#include "modules/indexeddb/IDBFactory.h"

#include "bindings/v8/ExceptionMessages.h"
#include "bindings/v8/ExceptionState.h"
#include "bindings/v8/IDBBindingUtilities.h"
#include "core/dom/Document.h"
#include "core/dom/ExceptionCode.h"
#include "core/platform/HistogramSupport.h"
#include "modules/indexeddb/IDBDatabase.h"
#include "modules/indexeddb/IDBDatabaseCallbacksImpl.h"
#include "modules/indexeddb/IDBFactoryBackendInterface.h"
#include "modules/indexeddb/IDBHistograms.h"
#include "modules/indexeddb/IDBKey.h"
#include "modules/indexeddb/IDBOpenDBRequest.h"
#include "modules/indexeddb/IDBTracing.h"
#include "weborigin/DatabaseIdentifier.h"
#include "weborigin/SecurityOrigin.h"

namespace WebCore {

IDBFactory::IDBFactory(IDBFactoryBackendInterface* factory)
    : m_backend(factory)
{
    // We pass a reference to this object before it can be adopted.
    relaxAdoptionRequirement();
    ScriptWrappable::init(this);
}

IDBFactory::~IDBFactory()
{
}

static bool isContextValid(ExecutionContext* context)
{
    ASSERT(context->isDocument() || context->isWorkerGlobalScope());
    if (context->isDocument()) {
        Document* document = toDocument(context);
        return document->frame() && document->page();
    }
    return true;
}

PassRefPtr<IDBRequest> IDBFactory::getDatabaseNames(ExecutionContext* context, ExceptionState& es)
{
    IDB_TRACE("IDBFactory::getDatabaseNames");
    if (!isContextValid(context))
        return 0;
    if (!context->securityOrigin()->canAccessDatabase()) {
        es.throwSecurityError(ExceptionMessages::failedToExecute("getDatabaseNames", "IDBFactory", "access to the Indexed Database API is denied in this context."));
        return 0;
    }

    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), 0);
    m_backend->getDatabaseNames(request, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
    return request;
}

PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, unsigned long long version, ExceptionState& es)
{
    IDB_TRACE("IDBFactory::open");
    if (!version) {
        es.throwTypeError();
        return 0;
    }
    return openInternal(context, name, version, es);
}

PassRefPtr<IDBOpenDBRequest> IDBFactory::openInternal(ExecutionContext* context, const String& name, int64_t version, ExceptionState& es)
{
    HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
    ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
    if (name.isNull()) {
        es.throwTypeError();
        return 0;
    }
    if (!isContextValid(context))
        return 0;
    if (!context->securityOrigin()->canAccessDatabase()) {
        es.throwSecurityError(ExceptionMessages::failedToExecute("open", "IDBFactory", "access to the Indexed Database API is denied in this context."));
        return 0;
    }

    RefPtr<IDBDatabaseCallbacksImpl> databaseCallbacks = IDBDatabaseCallbacksImpl::create();
    int64_t transactionId = IDBDatabase::nextTransactionId();
    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, databaseCallbacks, transactionId, version);
    m_backend->open(name, version, transactionId, request, databaseCallbacks, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
    return request;
}

PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, ExceptionState& es)
{
    IDB_TRACE("IDBFactory::open");
    return openInternal(context, name, IDBDatabaseMetadata::NoIntVersion, es);
}

PassRefPtr<IDBOpenDBRequest> IDBFactory::deleteDatabase(ExecutionContext* context, const String& name, ExceptionState& es)
{
    IDB_TRACE("IDBFactory::deleteDatabase");
    HistogramSupport::histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
    if (name.isNull()) {
        es.throwTypeError();
        return 0;
    }
    if (!isContextValid(context))
        return 0;
    if (!context->securityOrigin()->canAccessDatabase()) {
        es.throwSecurityError(ExceptionMessages::failedToExecute("deleteDatabase", "IDBFactory", "access to the Indexed Database API is denied in this context."));
        return 0;
    }

    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, 0, 0, IDBDatabaseMetadata::DefaultIntVersion);
    m_backend->deleteDatabase(name, request, createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()), context);
    return request;
}

short IDBFactory::cmp(ExecutionContext* context, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionState& es)
{
    DOMRequestState requestState(context);
    RefPtr<IDBKey> first = scriptValueToIDBKey(&requestState, firstValue);
    RefPtr<IDBKey> second = scriptValueToIDBKey(&requestState, secondValue);

    ASSERT(first);
    ASSERT(second);

    if (!first->isValid() || !second->isValid()) {
        es.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
        return 0;
    }

    return static_cast<short>(first->compare(second.get()));
}

} // namespace WebCore