static void populateContextMenuItems(ExecState* exec, JSArray* array, ContextMenu& menu)
{
    for (size_t i = 0; i < array->length(); ++i) {
        JSObject* item = asObject(array->getIndex(exec, i));
        JSValue label = item->get(exec, Identifier::fromString(exec, "label"));
        JSValue type = item->get(exec, Identifier::fromString(exec, "type"));
        JSValue id = item->get(exec, Identifier::fromString(exec, "id"));
        JSValue enabled = item->get(exec, Identifier::fromString(exec, "enabled"));
        JSValue checked = item->get(exec, Identifier::fromString(exec, "checked"));
        JSValue subItems = item->get(exec, Identifier::fromString(exec, "subItems"));
        if (!type.isString())
            continue;

        String typeString = type.toWTFString(exec);
        if (typeString == "separator") {
            ContextMenuItem item(SeparatorType, ContextMenuItemTagNoAction, String());
            menu.appendItem(item);
        } else if (typeString == "subMenu" && subItems.inherits(JSArray::info())) {
            ContextMenu subMenu;
            JSArray* subItemsArray = asArray(subItems);
            populateContextMenuItems(exec, subItemsArray, subMenu);
            ContextMenuItem item(SubmenuType, ContextMenuItemTagNoAction, label.toWTFString(exec), &subMenu);
            menu.appendItem(item);
        } else {
            ContextMenuAction typedId = static_cast<ContextMenuAction>(ContextMenuItemBaseCustomTag + id.toInt32(exec));
            ContextMenuItem menuItem((typeString == "checkbox" ? CheckableActionType : ActionType), typedId, label.toWTFString(exec));
            if (!enabled.isUndefined())
                menuItem.setEnabled(enabled.toBoolean(exec));
            if (!checked.isUndefined())
                menuItem.setChecked(checked.toBoolean(exec));
            menu.appendItem(menuItem);
        }
    }
}
Esempio n. 2
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// Based on ErrorPrototype's errorProtoFuncToString(), but is modified to
// have no observable side effects to the user (i.e. does not call proxies,
// and getters).
String ErrorInstance::sanitizedToString(ExecState* exec)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    JSValue nameValue;
    auto namePropertName = vm.propertyNames->name;
    PropertySlot nameSlot(this, PropertySlot::InternalMethodType::VMInquiry);

    JSValue currentObj = this;
    unsigned prototypeDepth = 0;

    // We only check the current object and its prototype (2 levels) because normal
    // Error objects may have a name property, and if not, its prototype should have
    // a name property for the type of error e.g. "SyntaxError".
    while (currentObj.isCell() && prototypeDepth++ < 2) {
        JSObject* obj = jsCast<JSObject*>(currentObj);
        if (JSObject::getOwnPropertySlot(obj, exec, namePropertName, nameSlot) && nameSlot.isValue()) {
            nameValue = nameSlot.getValue(exec, namePropertName);
            break;
        }
        currentObj = obj->getPrototypeDirect();
    }
    ASSERT(!scope.exception());

    String nameString;
    if (!nameValue)
        nameString = ASCIILiteral("Error");
    else {
        nameString = nameValue.toWTFString(exec);
        RETURN_IF_EXCEPTION(scope, String());
    }

    JSValue messageValue;
    auto messagePropertName = vm.propertyNames->message;
    PropertySlot messageSlot(this, PropertySlot::InternalMethodType::VMInquiry);
    if (JSObject::getOwnPropertySlot(this, exec, messagePropertName, messageSlot) && messageSlot.isValue())
        messageValue = messageSlot.getValue(exec, messagePropertName);
    ASSERT(!scope.exception());

    String messageString;
    if (!messageValue)
        messageString = String();
    else {
        messageString = messageValue.toWTFString(exec);
        RETURN_IF_EXCEPTION(scope, String());
    }

    if (!nameString.length())
        return messageString;

    if (!messageString.length())
        return nameString;

    StringBuilder builder;
    builder.append(nameString);
    builder.appendLiteral(": ");
    builder.append(messageString);
    return builder.toString();
}
Esempio n. 3
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// ECMA-262 5.1, 15.11.4.4
EncodedJSValue JSC_HOST_CALL errorProtoFuncToString(ExecState* exec)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    // 1. Let O be the this value.
    JSValue thisValue = exec->thisValue();

    // 2. If Type(O) is not Object, throw a TypeError exception.
    if (!thisValue.isObject())
        return throwVMTypeError(exec, scope);
    JSObject* thisObj = asObject(thisValue);

    // Guard against recursion!
    StringRecursionChecker checker(exec, thisObj);
    ASSERT(!scope.exception() || checker.earlyReturnValue());
    if (JSValue earlyReturnValue = checker.earlyReturnValue())
        return JSValue::encode(earlyReturnValue);

    // 3. Let name be the result of calling the [[Get]] internal method of O with argument "name".
    JSValue name = thisObj->get(exec, exec->propertyNames().name);
    RETURN_IF_EXCEPTION(scope, encodedJSValue());

    // 4. If name is undefined, then let name be "Error"; else let name be ToString(name).
    String nameString;
    if (name.isUndefined())
        nameString = ASCIILiteral("Error");
    else {
        nameString = name.toWTFString(exec);
        RETURN_IF_EXCEPTION(scope, encodedJSValue());
    }

    // 5. Let msg be the result of calling the [[Get]] internal method of O with argument "message".
    JSValue message = thisObj->get(exec, exec->propertyNames().message);
    RETURN_IF_EXCEPTION(scope, encodedJSValue());

    // (sic)
    // 6. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
    // 7. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
    String messageString;
    if (message.isUndefined())
        messageString = String();
    else {
        messageString = message.toWTFString(exec);
        RETURN_IF_EXCEPTION(scope, encodedJSValue());
    }

    // 8. If name is the empty String, return msg.
    if (!nameString.length())
        return JSValue::encode(message.isString() ? message : jsString(exec, messageString));

    // 9. If msg is the empty String, return name.
    if (!messageString.length())
        return JSValue::encode(name.isString() ? name : jsString(exec, nameString));

    // 10. Return the result of concatenating name, ":", a single space character, and msg.
    scope.release();
    return JSValue::encode(jsMakeNontrivialString(exec, nameString, ": ", messageString));
}
void JSLocation::setPort(ExecState* exec, JSValue value)
{
    String port = value.toWTFString(exec);
    if (exec->hadException())
        return;
    impl()->setPort(port, activeDOMWindow(exec), firstDOMWindow(exec));
}
Esempio n. 5
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bool JSStorage::putDelegate(ExecState* state, PropertyName propertyName, JSValue value, PutPropertySlot&, bool& putResult)
{
    VM& vm = state->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    // Only perform the custom put if the object doesn't have a native property by this name.
    // Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check
    // the native property slots manually.
    PropertySlot slot { this, PropertySlot::InternalMethodType::GetOwnProperty };

    JSValue prototype = this->getPrototypeDirect();
    if (prototype.isObject() && asObject(prototype)->getPropertySlot(state, propertyName, slot))
        return false;

    if (propertyName.isSymbol())
        return false;

    String stringValue = value.toWTFString(state);
    RETURN_IF_EXCEPTION(scope, true);

    auto setItemResult = wrapped().setItem(propertyNameToString(propertyName), stringValue);
    if (setItemResult.hasException()) {
        propagateException(*state, scope, setItemResult.releaseException());
        return true;
    }

    putResult = true;
    return true;
}
Esempio n. 6
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static std::error_code getTypeFlags(ExecState& exec, const JSValue& typeValue, ResourceFlags& flags, uint16_t (*stringToType)(const String&))
{
    VM& vm = exec.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    if (!typeValue.isObject())
        return { };

    const JSObject* object = typeValue.toObject(&exec);
    ASSERT(!scope.exception());
    if (!isJSArray(object))
        return ContentExtensionError::JSONInvalidTriggerFlagsArray;

    const JSArray* array = jsCast<const JSArray*>(object);
    
    unsigned length = array->length();
    for (unsigned i = 0; i < length; ++i) {
        const JSValue value = array->getIndex(&exec, i);
        if (scope.exception() || !value)
            return ContentExtensionError::JSONInvalidObjectInTriggerFlagsArray;
        
        String name = value.toWTFString(&exec);
        uint16_t type = stringToType(name);
        if (!type)
            return ContentExtensionError::JSONInvalidStringInTriggerFlagsArray;

        flags |= type;
    }

    return { };
}
static bool extractSourceInformationFromException(JSC::ExecState* exec, JSObject* exceptionObject, int* lineNumber, int* columnNumber, String* sourceURL)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_CATCH_SCOPE(vm);

    // FIXME: <http://webkit.org/b/115087> Web Inspector: Should not need to evaluate JavaScript handling exceptions
    JSValue lineValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "line"));
    JSValue columnValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "column"));
    JSValue sourceURLValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "sourceURL"));
    
    bool result = false;
    if (lineValue && lineValue.isNumber()
        && sourceURLValue && sourceURLValue.isString()) {
        *lineNumber = int(lineValue.toNumber(exec));
        *columnNumber = columnValue && columnValue.isNumber() ? int(columnValue.toNumber(exec)) : 0;
        *sourceURL = sourceURLValue.toWTFString(exec);
        result = true;
    } else if (ErrorInstance* error = jsDynamicCast<ErrorInstance*>(vm, exceptionObject)) {
        unsigned unsignedLine;
        unsigned unsignedColumn;
        result = getLineColumnAndSource(error->stackTrace(), unsignedLine, unsignedColumn, *sourceURL);
        *lineNumber = static_cast<int>(unsignedLine);
        *columnNumber = static_cast<int>(unsignedColumn);
    }
    
    if (sourceURL->isEmpty())
        *sourceURL = "undefined"_s;
    
    scope.clearException();
    return result;
}
template<> Optional<TestStandaloneDictionary::EnumInStandaloneDictionaryFile> parseEnumeration<TestStandaloneDictionary::EnumInStandaloneDictionaryFile>(ExecState& state, JSValue value)
{
    auto stringValue = value.toWTFString(&state);
    if (stringValue == "enumValue1")
        return TestStandaloneDictionary::EnumInStandaloneDictionaryFile::EnumValue1;
    if (stringValue == "enumValue2")
        return TestStandaloneDictionary::EnumInStandaloneDictionaryFile::EnumValue2;
    return WTF::nullopt;
}
Esempio n. 9
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bool setJSTestInterfaceConstructorSupplementalStaticAttr(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    auto nativeValue = value.toWTFString(state);
    if (UNLIKELY(state->hadException()))
        return false;
    WebCore::TestSupplemental::setSupplementalStaticAttr(WTFMove(nativeValue));
    return true;
}
Esempio n. 10
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bool JSDictionary::getWithUndefinedOrNullCheck(const String& propertyName, String& result) const
{
    ASSERT(isValid());
    JSValue value;
    if (tryGetProperty(propertyName.utf8().data(), value) != PropertyFound || value.isUndefinedOrNull())
        return false;

    result = value.toWTFString(m_exec);
    return true;
}
Esempio n. 11
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static std::error_code loadAction(ExecState& exec, const JSObject& ruleObject, Action& action, bool& validSelector)
{
    VM& vm = exec.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    validSelector = true;
    const JSValue actionObject = ruleObject.get(&exec, Identifier::fromString(&exec, "action"));
    if (!actionObject || scope.exception() || !actionObject.isObject())
        return ContentExtensionError::JSONInvalidAction;

    const JSValue typeObject = actionObject.get(&exec, Identifier::fromString(&exec, "type"));
    if (!typeObject || scope.exception() || !typeObject.isString())
        return ContentExtensionError::JSONInvalidActionType;

    String actionType = typeObject.toWTFString(&exec);

    if (actionType == "block")
        action = ActionType::BlockLoad;
    else if (actionType == "ignore-previous-rules")
        action = ActionType::IgnorePreviousRules;
    else if (actionType == "block-cookies")
        action = ActionType::BlockCookies;
    else if (actionType == "css-display-none") {
        JSValue selector = actionObject.get(&exec, Identifier::fromString(&exec, "selector"));
        if (!selector || scope.exception() || !selector.isString())
            return ContentExtensionError::JSONInvalidCSSDisplayNoneActionType;

        String s = selector.toWTFString(&exec);
        if (!isValidSelector(s)) {
            // Skip rules with invalid selectors to be backwards-compatible.
            validSelector = false;
            return { };
        }
        action = Action(ActionType::CSSDisplayNoneSelector, s);
    } else if (actionType == "make-https") {
        action = ActionType::MakeHTTPS;
    } else
        return ContentExtensionError::JSONInvalidActionType;

    return { };
}
Esempio n. 12
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bool setJSTestInterfaceSupplementalStr2(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(thisValue);
    JSTestInterface* castedThis = jsDynamicCast<JSTestInterface*>(JSValue::decode(thisValue));
    if (UNLIKELY(!castedThis)) {
        return throwSetterTypeError(*state, "TestInterface", "supplementalStr2");
    }
    auto& impl = castedThis->wrapped();
    auto nativeValue = value.toWTFString(state);
    if (UNLIKELY(state->hadException()))
        return false;
    WebCore::TestSupplemental::setSupplementalStr2(impl, WTFMove(nativeValue));
    return true;
}
Esempio n. 13
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bool setJSTestNodeName(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(thisValue);
    JSTestNode* castedThis = jsDynamicCast<JSTestNode*>(JSValue::decode(thisValue));
    if (UNLIKELY(!castedThis)) {
        return throwSetterTypeError(*state, "TestNode", "name");
    }
    auto& impl = castedThis->wrapped();
    auto nativeValue = value.toWTFString(state);
    if (UNLIKELY(state->hadException()))
        return false;
    impl.setName(WTFMove(nativeValue));
    return true;
}
Esempio n. 14
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bool setJSTestGlobalObjectPublicAndPrivateConditionalAttribute(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(thisValue);
    JSTestGlobalObject* castedThis = jsDynamicCast<JSTestGlobalObject*>(JSValue::decode(thisValue));
    if (UNLIKELY(!castedThis)) {
        return throwSetterTypeError(*state, "TestGlobalObject", "publicAndPrivateConditionalAttribute");
    }
    auto& impl = castedThis->wrapped();
    auto nativeValue = value.toWTFString(state);
    if (UNLIKELY(state->hadException()))
        return false;
    impl.setPublicAndPrivateConditionalAttribute(WTFMove(nativeValue));
    return true;
}
Esempio n. 15
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static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyTable(ExecState* exec)
{
    VM& vm = exec->vm();
    auto throwScope = DECLARE_THROW_SCOPE(vm);

    JSObject* memoryDescriptor;
    {
        JSValue argument = exec->argument(0);
        if (!argument.isObject())
            return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its first argument to be an object"))));
        memoryDescriptor = jsCast<JSObject*>(argument);
    }

    {
        Identifier elementIdent = Identifier::fromString(&vm, "element");
        JSValue elementValue = memoryDescriptor->get(exec, elementIdent);
        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
        String elementString = elementValue.toWTFString(exec);
        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
        if (elementString != "anyfunc")
            return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its 'element' field to be the string 'anyfunc'"))));
    }

    Identifier initialIdent = Identifier::fromString(&vm, "initial");
    JSValue initialSizeValue = memoryDescriptor->get(exec, initialIdent);
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
    uint32_t initial = toNonWrappingUint32(exec, initialSizeValue);
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    std::optional<uint32_t> maximum;
    Identifier maximumIdent = Identifier::fromString(&vm, "maximum");
    bool hasProperty = memoryDescriptor->hasProperty(exec, maximumIdent);
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
    if (hasProperty) {
        JSValue maxSizeValue = memoryDescriptor->get(exec, maximumIdent);
        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
        maximum = toNonWrappingUint32(exec, maxSizeValue);
        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

        if (initial > *maximum) {
            return JSValue::encode(throwException(exec, throwScope,
                createRangeError(exec, ASCIILiteral("'maximum' property must be greater than or equal to the 'initial' property"))));
        }
    }

    throwScope.release();
    return JSValue::encode(JSWebAssemblyTable::create(exec, vm, exec->lexicalGlobalObject()->WebAssemblyTableStructure(), initial, maximum));
}
static CryptoKeyFormat cryptoKeyFormatFromJSValue(ExecState& state, ThrowScope& scope, JSValue value)
{
    auto keyFormatString = value.toWTFString(&state);
    RETURN_IF_EXCEPTION(scope, { });

    if (keyFormatString == "raw")
        return CryptoKeyFormat::Raw;
    if (keyFormatString == "pkcs8")
        return CryptoKeyFormat::PKCS8;
    if (keyFormatString == "spki")
        return CryptoKeyFormat::SPKI;
    if (keyFormatString == "jwk")
        return CryptoKeyFormat::JWK;

    throwTypeError(&state, scope, ASCIILiteral("Unknown key format"));
    return { };
}
Esempio n. 17
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String JSCustomXPathNSResolver::lookupNamespaceURI(const String& prefix)
{
    ASSERT(m_customResolver);

    JSLockHolder lock(commonVM());

    ExecState* exec = m_globalObject->globalExec();
        
    JSValue function = m_customResolver->get(exec, Identifier::fromString(exec, "lookupNamespaceURI"));
    CallData callData;
    CallType callType = getCallData(function, callData);
    if (callType == CallType::None) {
        callType = m_customResolver->methodTable()->getCallData(m_customResolver.get(), callData);
        if (callType == CallType::None) {
            if (PageConsoleClient* console = m_globalObject->wrapped().console())
                console->addMessage(MessageSource::JS, MessageLevel::Error, ASCIILiteral("XPathNSResolver does not have a lookupNamespaceURI method."));
            return String();
        }
        function = m_customResolver.get();
    }

    Ref<JSCustomXPathNSResolver> protectedThis(*this);

    MarkedArgumentBuffer args;
    args.append(jsStringWithCache(exec, prefix));

    NakedPtr<JSC::Exception> exception;
    JSValue retval = JSMainThreadExecState::call(exec, function, callType, callData, m_customResolver.get(), args, exception);

    String result;
    if (exception)
        reportException(exec, exception);
    else {
        if (!retval.isUndefinedOrNull())
            result = retval.toWTFString(exec);
    }

    return result;
}
Esempio n. 18
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static std::error_code loadTrigger(ExecState& exec, const JSObject& ruleObject, Trigger& trigger)
{
    VM& vm = exec.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    const JSValue triggerObject = ruleObject.get(&exec, Identifier::fromString(&exec, "trigger"));
    if (!triggerObject || scope.exception() || !triggerObject.isObject())
        return ContentExtensionError::JSONInvalidTrigger;
    
    const JSValue urlFilterObject = triggerObject.get(&exec, Identifier::fromString(&exec, "url-filter"));
    if (!urlFilterObject || scope.exception() || !urlFilterObject.isString())
        return ContentExtensionError::JSONInvalidURLFilterInTrigger;

    String urlFilter = urlFilterObject.toWTFString(&exec);
    if (urlFilter.isEmpty())
        return ContentExtensionError::JSONInvalidURLFilterInTrigger;

    trigger.urlFilter = urlFilter;

    const JSValue urlFilterCaseValue = triggerObject.get(&exec, Identifier::fromString(&exec, "url-filter-is-case-sensitive"));
    if (urlFilterCaseValue && !scope.exception() && urlFilterCaseValue.isBoolean())
        trigger.urlFilterIsCaseSensitive = urlFilterCaseValue.toBoolean(&exec);

    const JSValue resourceTypeValue = triggerObject.get(&exec, Identifier::fromString(&exec, "resource-type"));
    if (!scope.exception() && resourceTypeValue.isObject()) {
        auto typeFlagsError = getTypeFlags(exec, resourceTypeValue, trigger.flags, readResourceType);
        if (typeFlagsError)
            return typeFlagsError;
    } else if (!resourceTypeValue.isUndefined())
        return ContentExtensionError::JSONInvalidTriggerFlagsArray;

    const JSValue loadTypeValue = triggerObject.get(&exec, Identifier::fromString(&exec, "load-type"));
    if (!scope.exception() && loadTypeValue.isObject()) {
        auto typeFlagsError = getTypeFlags(exec, loadTypeValue, trigger.flags, readLoadType);
        if (typeFlagsError)
            return typeFlagsError;
    } else if (!loadTypeValue.isUndefined())
        return ContentExtensionError::JSONInvalidTriggerFlagsArray;

    const JSValue ifDomain = triggerObject.get(&exec, Identifier::fromString(&exec, "if-domain"));
    if (!scope.exception() && ifDomain.isObject()) {
        auto ifDomainError = getDomainList(exec, asObject(ifDomain), trigger.domains);
        if (ifDomainError)
            return ifDomainError;
        if (trigger.domains.isEmpty())
            return ContentExtensionError::JSONInvalidDomainList;
        ASSERT(trigger.domainCondition == Trigger::DomainCondition::None);
        trigger.domainCondition = Trigger::DomainCondition::IfDomain;
    } else if (!ifDomain.isUndefined())
        return ContentExtensionError::JSONInvalidDomainList;
    
    const JSValue unlessDomain = triggerObject.get(&exec, Identifier::fromString(&exec, "unless-domain"));
    if (!scope.exception() && unlessDomain.isObject()) {
        if (trigger.domainCondition != Trigger::DomainCondition::None)
            return ContentExtensionError::JSONUnlessAndIfDomain;
        auto unlessDomainError = getDomainList(exec, asObject(unlessDomain), trigger.domains);
        if (unlessDomainError)
            return unlessDomainError;
        if (trigger.domains.isEmpty())
            return ContentExtensionError::JSONInvalidDomainList;
        trigger.domainCondition = Trigger::DomainCondition::UnlessDomain;
    } else if (!unlessDomain.isUndefined())
        return ContentExtensionError::JSONInvalidDomainList;

    return { };
}
Esempio n. 19
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EncodedJSValue JSC_HOST_CALL constructJSFile(ExecState& exec)
{
    auto* constructor = jsCast<DOMConstructorObject*>(exec.callee());
    ScriptExecutionContext* context = constructor->scriptExecutionContext();
    if (!context)
        return throwVMError(&exec, createReferenceError(&exec, "File constructor associated document is unavailable"));

    JSValue arg = exec.argument(0);
    if (arg.isUndefinedOrNull())
        return throwVMTypeError(&exec, ASCIILiteral("First argument to File constructor must be a valid sequence, was undefined or null"));

    unsigned blobPartsLength = 0;
    JSObject* blobParts = toJSSequence(exec, arg, blobPartsLength);
    if (exec.hadException())
        return JSValue::encode(jsUndefined());
    ASSERT(blobParts);

    arg = exec.argument(1);
    if (arg.isUndefined())
        return throwVMTypeError(&exec, ASCIILiteral("Second argument to File constructor must be a valid string, was undefined"));

    String filename = arg.toWTFString(&exec).replace('/', ':');
    if (exec.hadException())
        return JSValue::encode(jsUndefined());

    String normalizedType;
    Optional<int64_t> lastModified;

    arg = exec.argument(2);
    if (!arg.isUndefinedOrNull()) {
        JSObject* filePropertyBagObject = arg.getObject();
        if (!filePropertyBagObject)
            return throwVMTypeError(&exec, ASCIILiteral("Third argument of the constructor is not of type Object"));

        // Create the dictionary wrapper from the initializer object.
        JSDictionary dictionary(&exec, filePropertyBagObject);

        // Attempt to get the type property.
        String type;
        dictionary.get("type", type);
        if (exec.hadException())
            return JSValue::encode(jsUndefined());

        normalizedType = Blob::normalizedContentType(type);

        // Only try to parse the lastModified date if there was not an invalid type argument.
        if (type.isEmpty() ||  !normalizedType.isEmpty()) {
            dictionary.get("lastModified", lastModified);
            if (exec.hadException())
                return JSValue::encode(jsUndefined());
        }
    }

    if (!lastModified)
        lastModified = currentTimeMS();

    BlobBuilder blobBuilder;

    for (unsigned i = 0; i < blobPartsLength; ++i) {
        JSValue item = blobParts->get(&exec, i);
        if (exec.hadException())
            return JSValue::encode(jsUndefined());

        if (ArrayBuffer* arrayBuffer = toArrayBuffer(item))
            blobBuilder.append(arrayBuffer);
        else if (RefPtr<ArrayBufferView> arrayBufferView = toArrayBufferView(item))
            blobBuilder.append(WTFMove(arrayBufferView));
        else if (Blob* blob = JSBlob::toWrapped(item))
            blobBuilder.append(blob);
        else {
            String string = item.toWTFString(&exec);
            if (exec.hadException())
                return JSValue::encode(jsUndefined());
            blobBuilder.append(string, ASCIILiteral("transparent"));
        }
    }

    auto file = File::create(blobBuilder.finalize(), filename, normalizedType, lastModified.value());
    return JSValue::encode(CREATE_DOM_WRAPPER(constructor->globalObject(), File, WTFMove(file)));
}
Esempio n. 20
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void JSEventListener::handleEvent(ScriptExecutionContext* scriptExecutionContext, Event* event)
{
    ASSERT(scriptExecutionContext);
    if (!scriptExecutionContext || scriptExecutionContext->isJSExecutionForbidden())
        return;

    VM& vm = scriptExecutionContext->vm();
    JSLockHolder lock(vm);
    auto scope = DECLARE_CATCH_SCOPE(vm);
    // See https://dom.spec.whatwg.org/#dispatching-events spec on calling handleEvent.
    // "If this throws an exception, report the exception." It should not propagate the
    // exception.

    JSObject* jsFunction = this->jsFunction(scriptExecutionContext);
    if (!jsFunction)
        return;

    JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(scriptExecutionContext, *m_isolatedWorld);
    if (!globalObject)
        return;

    if (scriptExecutionContext->isDocument()) {
        JSDOMWindow* window = jsCast<JSDOMWindow*>(globalObject);
        if (!window->wrapped().isCurrentlyDisplayedInFrame())
            return;
        if (wasCreatedFromMarkup() && !scriptExecutionContext->contentSecurityPolicy()->allowInlineEventHandlers(sourceURL(), sourcePosition().m_line))
            return;
        // FIXME: Is this check needed for other contexts?
        ScriptController& script = window->wrapped().frame()->script();
        if (!script.canExecuteScripts(AboutToExecuteScript) || script.isPaused())
            return;
    }

    ExecState* exec = globalObject->globalExec();
    JSValue handleEventFunction = jsFunction;

    CallData callData;
    CallType callType = getCallData(handleEventFunction, callData);
    // If jsFunction is not actually a function, see if it implements the EventListener interface and use that
    if (callType == CallType::None) {
        handleEventFunction = jsFunction->get(exec, Identifier::fromString(exec, "handleEvent"));
        if (UNLIKELY(scope.exception())) {
            auto* exception = scope.exception();
            scope.clearException();

            event->target()->uncaughtExceptionInEventHandler();
            reportException(exec, exception);
            return;
        }
        callType = getCallData(handleEventFunction, callData);
    }

    if (callType != CallType::None) {
        Ref<JSEventListener> protectedThis(*this);

        MarkedArgumentBuffer args;
        args.append(toJS(exec, globalObject, event));

        Event* savedEvent = globalObject->currentEvent();
        globalObject->setCurrentEvent(event);

        VMEntryScope entryScope(vm, vm.entryScope ? vm.entryScope->globalObject() : globalObject);

        InspectorInstrumentationCookie cookie = JSMainThreadExecState::instrumentFunctionCall(scriptExecutionContext, callType, callData);

        JSValue thisValue = handleEventFunction == jsFunction ? toJS(exec, globalObject, event->currentTarget()) : jsFunction;
        NakedPtr<JSC::Exception> exception;
        JSValue retval = scriptExecutionContext->isDocument()
            ? JSMainThreadExecState::profiledCall(exec, JSC::ProfilingReason::Other, handleEventFunction, callType, callData, thisValue, args, exception)
            : JSC::profiledCall(exec, JSC::ProfilingReason::Other, handleEventFunction, callType, callData, thisValue, args, exception);

        InspectorInstrumentation::didCallFunction(cookie, scriptExecutionContext);

        globalObject->setCurrentEvent(savedEvent);

        if (is<WorkerGlobalScope>(*scriptExecutionContext)) {
            auto scriptController = downcast<WorkerGlobalScope>(*scriptExecutionContext).script();
            bool terminatorCausedException = (scope.exception() && isTerminatedExecutionException(scope.exception()));
            if (terminatorCausedException || scriptController->isTerminatingExecution())
                scriptController->forbidExecution();
        }

        if (exception) {
            event->target()->uncaughtExceptionInEventHandler();
            reportException(exec, exception);
        } else {
            if (!retval.isUndefinedOrNull() && is<BeforeUnloadEvent>(*event))
                downcast<BeforeUnloadEvent>(*event).setReturnValue(retval.toWTFString(exec));
            if (m_isAttribute) {
                if (retval.isFalse())
                    event->preventDefault();
            }
        }
    }
}
Esempio n. 21
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static String valueToStringWithUndefinedOrNullCheck(ExecState* exec, JSValue value)
{
    if (value.isUndefinedOrNull())
        return String();
    return value.toWTFString(exec);
}
Esempio n. 22
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static String valueOrDefaultLabelString(ExecState* exec, JSValue value)
{
    if (value.isUndefined())
        return "default"_s;
    return value.toWTFString(exec);
}
Esempio n. 23
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void IntlDateTimeFormat::initializeDateTimeFormat(ExecState& exec, JSValue locales, JSValue originalOptions)
{
    VM& vm = exec.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    // 12.1.1 InitializeDateTimeFormat (dateTimeFormat, locales, options) (ECMA-402 2.0)
    // 1. If dateTimeFormat.[[initializedIntlObject]] is true, throw a TypeError exception.
    // 2. Set dateTimeFormat.[[initializedIntlObject]] to true.

    // 3. Let requestedLocales be CanonicalizeLocaleList(locales).
    Vector<String> requestedLocales = canonicalizeLocaleList(exec, locales);
    // 4. ReturnIfAbrupt(requestedLocales),
    RETURN_IF_EXCEPTION(scope, void());

    // 5. Let options be ToDateTimeOptions(options, "any", "date").
    JSObject* options = toDateTimeOptionsAnyDate(exec, originalOptions);
    // 6. ReturnIfAbrupt(options).
    RETURN_IF_EXCEPTION(scope, void());

    // 7. Let opt be a new Record.
    HashMap<String, String> localeOpt;

    // 8. Let matcher be GetOption(options, "localeMatcher", "string", «"lookup", "best fit"», "best fit").
    String localeMatcher = intlStringOption(exec, options, vm.propertyNames->localeMatcher, { "lookup", "best fit" }, "localeMatcher must be either \"lookup\" or \"best fit\"", "best fit");
    // 9. ReturnIfAbrupt(matcher).
    RETURN_IF_EXCEPTION(scope, void());
    // 10. Set opt.[[localeMatcher]] to matcher.
    localeOpt.add(vm.propertyNames->localeMatcher.string(), localeMatcher);

    // 11. Let localeData be the value of %DateTimeFormat%.[[localeData]].
    // 12. Let r be ResolveLocale( %DateTimeFormat%.[[availableLocales]], requestedLocales, opt, %DateTimeFormat%.[[relevantExtensionKeys]], localeData).
    const HashSet<String> availableLocales = exec.jsCallee()->globalObject()->intlDateTimeFormatAvailableLocales();
    HashMap<String, String> resolved = resolveLocale(exec, availableLocales, requestedLocales, localeOpt, relevantExtensionKeys, WTF_ARRAY_LENGTH(relevantExtensionKeys), localeData);

    // 13. Set dateTimeFormat.[[locale]] to the value of r.[[locale]].
    m_locale = resolved.get(vm.propertyNames->locale.string());
    if (m_locale.isEmpty()) {
        throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat due to invalid locale"));
        return;
    }
    // 14. Set dateTimeFormat.[[calendar]] to the value of r.[[ca]].
    m_calendar = resolved.get(ASCIILiteral("ca"));
    // Switch to preferred aliases.
    if (m_calendar == "gregory")
        m_calendar = ASCIILiteral("gregorian");
    else if (m_calendar == "islamicc")
        m_calendar = ASCIILiteral("islamic-civil");
    else if (m_calendar == "ethioaa")
        m_calendar = ASCIILiteral("ethiopic-amete-alem");
    // 15. Set dateTimeFormat.[[numberingSystem]] to the value of r.[[nu]].
    m_numberingSystem = resolved.get(ASCIILiteral("nu"));
    // 16. Let dataLocale be the value of r.[[dataLocale]].
    String dataLocale = resolved.get(ASCIILiteral("dataLocale"));

    // 17. Let tz be Get(options, "timeZone").
    JSValue tzValue = options->get(&exec, vm.propertyNames->timeZone);
    // 18. ReturnIfAbrupt(tz).
    RETURN_IF_EXCEPTION(scope, void());

    // 19. If tz is not undefined, then
    String tz;
    if (!tzValue.isUndefined()) {
        // a. Let tz be ToString(tz).
        String originalTz = tzValue.toWTFString(&exec);
        // b. ReturnIfAbrupt(tz).
        RETURN_IF_EXCEPTION(scope, void());
        // c. If the result of IsValidTimeZoneName(tz) is false, then i. Throw a RangeError exception.
        // d. Let tz be CanonicalizeTimeZoneName(tz).
        tz = canonicalizeTimeZoneName(originalTz);
        if (tz.isNull()) {
            throwRangeError(&exec, scope, String::format("invalid time zone: %s", originalTz.utf8().data()));
            return;
        }
    } else {
        // 20. Else,
        // a. Let tz be DefaultTimeZone().
        tz = defaultTimeZone();
    }

    // 21. Set dateTimeFormat.[[timeZone]] to tz.
    m_timeZone = tz;

    // 22. Let opt be a new Record.
    // Rather than building a record, build the skeleton pattern.
    StringBuilder skeletonBuilder;

    // 23. For each row of Table 3, except the header row, do:
    // a. Let prop be the name given in the Property column of the row.
    // b. Let value be GetOption(options, prop, "string", «the strings given in the Values column of the row», undefined).
    // c. ReturnIfAbrupt(value).
    // d. Set opt.[[<prop>]] to value.
    auto narrowShortLong = { "narrow", "short", "long" };
    auto twoDigitNumeric = { "2-digit", "numeric" };
    auto twoDigitNumericNarrowShortLong = { "2-digit", "numeric", "narrow", "short", "long" };
    auto shortLong = { "short", "long" };

    String weekday = intlStringOption(exec, options, vm.propertyNames->weekday, narrowShortLong, "weekday must be \"narrow\", \"short\", or \"long\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!weekday.isNull()) {
        if (weekday == "narrow")
            skeletonBuilder.appendLiteral("EEEEE");
        else if (weekday == "short")
            skeletonBuilder.appendLiteral("EEE");
        else if (weekday == "long")
            skeletonBuilder.appendLiteral("EEEE");
    }

    String era = intlStringOption(exec, options, vm.propertyNames->era, narrowShortLong, "era must be \"narrow\", \"short\", or \"long\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!era.isNull()) {
        if (era == "narrow")
            skeletonBuilder.appendLiteral("GGGGG");
        else if (era == "short")
            skeletonBuilder.appendLiteral("GGG");
        else if (era == "long")
            skeletonBuilder.appendLiteral("GGGG");
    }

    String year = intlStringOption(exec, options, vm.propertyNames->year, twoDigitNumeric, "year must be \"2-digit\" or \"numeric\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!year.isNull()) {
        if (year == "2-digit")
            skeletonBuilder.appendLiteral("yy");
        else if (year == "numeric")
            skeletonBuilder.append('y');
    }

    String month = intlStringOption(exec, options, vm.propertyNames->month, twoDigitNumericNarrowShortLong, "month must be \"2-digit\", \"numeric\", \"narrow\", \"short\", or \"long\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!month.isNull()) {
        if (month == "2-digit")
            skeletonBuilder.appendLiteral("MM");
        else if (month == "numeric")
            skeletonBuilder.append('M');
        else if (month == "narrow")
            skeletonBuilder.appendLiteral("MMMMM");
        else if (month == "short")
            skeletonBuilder.appendLiteral("MMM");
        else if (month == "long")
            skeletonBuilder.appendLiteral("MMMM");
    }

    String day = intlStringOption(exec, options, vm.propertyNames->day, twoDigitNumeric, "day must be \"2-digit\" or \"numeric\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!day.isNull()) {
        if (day == "2-digit")
            skeletonBuilder.appendLiteral("dd");
        else if (day == "numeric")
            skeletonBuilder.append('d');
    }

    String hour = intlStringOption(exec, options, vm.propertyNames->hour, twoDigitNumeric, "hour must be \"2-digit\" or \"numeric\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());

    // We need hour12 to make the hour skeleton pattern decision, so do this early.
    // 32. Let hr12 be GetOption(options, "hour12", "boolean", undefined, undefined).
    bool isHour12Undefined;
    bool hr12 = intlBooleanOption(exec, options, vm.propertyNames->hour12, isHour12Undefined);
    // 33. ReturnIfAbrupt(hr12).
    RETURN_IF_EXCEPTION(scope, void());

    if (!hour.isNull()) {
        if (isHour12Undefined) {
            if (hour == "2-digit")
                skeletonBuilder.appendLiteral("jj");
            else if (hour == "numeric")
                skeletonBuilder.append('j');
        } else if (hr12) {
            if (hour == "2-digit")
                skeletonBuilder.appendLiteral("hh");
            else if (hour == "numeric")
                skeletonBuilder.append('h');
        } else {
            if (hour == "2-digit")
                skeletonBuilder.appendLiteral("HH");
            else if (hour == "numeric")
                skeletonBuilder.append('H');
        }
    }

    String minute = intlStringOption(exec, options, vm.propertyNames->minute, twoDigitNumeric, "minute must be \"2-digit\" or \"numeric\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!minute.isNull()) {
        if (minute == "2-digit")
            skeletonBuilder.appendLiteral("mm");
        else if (minute == "numeric")
            skeletonBuilder.append('m');
    }

    String second = intlStringOption(exec, options, vm.propertyNames->second, twoDigitNumeric, "second must be \"2-digit\" or \"numeric\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!second.isNull()) {
        if (second == "2-digit")
            skeletonBuilder.appendLiteral("ss");
        else if (second == "numeric")
            skeletonBuilder.append('s');
    }

    String timeZoneName = intlStringOption(exec, options, vm.propertyNames->timeZoneName, shortLong, "timeZoneName must be \"short\" or \"long\"", nullptr);
    RETURN_IF_EXCEPTION(scope, void());
    if (!timeZoneName.isNull()) {
        if (timeZoneName == "short")
            skeletonBuilder.append('z');
        else if (timeZoneName == "long")
            skeletonBuilder.appendLiteral("zzzz");
    }

    // 24. Let dataLocaleData be Get(localeData, dataLocale).
    // 25. Let formats be Get(dataLocaleData, "formats").
    // 26. Let matcher be GetOption(options, "formatMatcher", "string", «"basic", "best fit"», "best fit").
    intlStringOption(exec, options, vm.propertyNames->formatMatcher, { "basic", "best fit" }, "formatMatcher must be either \"basic\" or \"best fit\"", "best fit");
    // 27. ReturnIfAbrupt(matcher).
    RETURN_IF_EXCEPTION(scope, void());

    // Always use ICU date format generator, rather than our own pattern list and matcher.
    // Covers steps 28-36.
    UErrorCode status = U_ZERO_ERROR;
    UDateTimePatternGenerator* generator = udatpg_open(dataLocale.utf8().data(), &status);
    if (U_FAILURE(status)) {
        throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
        return;
    }

    String skeleton = skeletonBuilder.toString();
    StringView skeletonView(skeleton);
    Vector<UChar, 32> patternBuffer(32);
    status = U_ZERO_ERROR;
    auto patternLength = udatpg_getBestPattern(generator, skeletonView.upconvertedCharacters(), skeletonView.length(), patternBuffer.data(), patternBuffer.size(), &status);
    if (status == U_BUFFER_OVERFLOW_ERROR) {
        status = U_ZERO_ERROR;
        patternBuffer.grow(patternLength);
        udatpg_getBestPattern(generator, skeletonView.upconvertedCharacters(), skeletonView.length(), patternBuffer.data(), patternLength, &status);
    }
    udatpg_close(generator);
    if (U_FAILURE(status)) {
        throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
        return;
    }

    StringView pattern(patternBuffer.data(), patternLength);
    setFormatsFromPattern(pattern);

    status = U_ZERO_ERROR;
    StringView timeZoneView(m_timeZone);
    m_dateFormat = std::unique_ptr<UDateFormat, UDateFormatDeleter>(udat_open(UDAT_PATTERN, UDAT_PATTERN, m_locale.utf8().data(), timeZoneView.upconvertedCharacters(), timeZoneView.length(), pattern.upconvertedCharacters(), pattern.length(), &status));
    if (U_FAILURE(status)) {
        throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
        return;
    }

    // 37. Set dateTimeFormat.[[boundFormat]] to undefined.
    // Already undefined.

    // 38. Set dateTimeFormat.[[initializedDateTimeFormat]] to true.
    m_initializedDateTimeFormat = true;

    // 39. Return dateTimeFormat.
}