1/*
2 * Copyright (C) 2016 Apple 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "JSDOMWindowProperties.h"
28
29#include "Frame.h"
30#include "HTMLDocument.h"
31#include "JSDOMBinding.h"
32#include "JSDOMBindingSecurity.h"
33#include "JSDOMConvertStrings.h"
34#include "JSDOMWindowBase.h"
35#include "JSElement.h"
36#include "JSHTMLCollection.h"
37
38namespace WebCore {
39
40using namespace JSC;
41
42const ClassInfo JSDOMWindowProperties::s_info = { "WindowProperties", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDOMWindowProperties) };
43
44static bool jsDOMWindowPropertiesGetOwnPropertySlotNamedItemGetter(JSDOMWindowProperties* thisObject, DOMWindow& window, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
45{
46 // Check for child frames by name before built-in properties to match Mozilla. This does
47 // not match IE, but some sites end up naming frames things that conflict with window
48 // properties that are in Moz but not IE. Since we have some of these, we have to do it
49 // the Moz way.
50 if (auto* frame = window.frame()) {
51 if (auto* scopedChild = frame->tree().scopedChild(propertyNameToAtomicString(propertyName))) {
52 slot.setValue(thisObject, JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::DontEnum, toJS(exec, scopedChild->document()->domWindow()));
53 return true;
54 }
55 }
56
57 if (!BindingSecurity::shouldAllowAccessToDOMWindow(exec, window, ThrowSecurityError))
58 return false;
59
60 // FIXME: Search the whole frame hierarchy somewhere around here.
61 // We need to test the correct priority order.
62
63 // Allow shortcuts like 'Image1' instead of document.images.Image1
64 auto* document = window.document();
65 if (is<HTMLDocument>(document)) {
66 auto& htmlDocument = downcast<HTMLDocument>(*document);
67 auto* atomicPropertyName = propertyName.publicName();
68 if (atomicPropertyName && htmlDocument.hasWindowNamedItem(*atomicPropertyName)) {
69 JSValue namedItem;
70 if (UNLIKELY(htmlDocument.windowNamedItemContainsMultipleElements(*atomicPropertyName))) {
71 Ref<HTMLCollection> collection = document->windowNamedItems(atomicPropertyName);
72 ASSERT(collection->length() > 1);
73 namedItem = toJS(exec, thisObject->globalObject(), collection);
74 } else
75 namedItem = toJS(exec, thisObject->globalObject(), htmlDocument.windowNamedItem(*atomicPropertyName));
76 slot.setValue(thisObject, JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::DontEnum, namedItem);
77 return true;
78 }
79 }
80
81 return false;
82}
83
84bool JSDOMWindowProperties::getOwnPropertySlot(JSObject* object, ExecState* state, PropertyName propertyName, PropertySlot& slot)
85{
86 auto* thisObject = jsCast<JSDOMWindowProperties*>(object);
87 ASSERT_GC_OBJECT_INHERITS(thisObject, info());
88 if (Base::getOwnPropertySlot(thisObject, state, propertyName, slot))
89 return true;
90 JSValue proto = thisObject->getPrototypeDirect(state->vm());
91 if (proto.isObject() && jsCast<JSObject*>(proto)->hasProperty(state, propertyName))
92 return false;
93
94 auto& vm = state->vm();
95
96 // FIXME: We should probably add support for JSRemoteDOMWindowBase too.
97 auto* jsWindow = jsDynamicCast<JSDOMWindowBase*>(vm, thisObject->globalObject());
98 if (!jsWindow)
99 return false;
100
101 auto& window = jsWindow->wrapped();
102 return jsDOMWindowPropertiesGetOwnPropertySlotNamedItemGetter(thisObject, window, state, propertyName, slot);
103}
104
105bool JSDOMWindowProperties::getOwnPropertySlotByIndex(JSObject* object, ExecState* state, unsigned index, PropertySlot& slot)
106{
107 return getOwnPropertySlot(object, state, Identifier::from(state, index), slot);
108}
109
110} // namespace WebCore
111