1/*
2 * Copyright (C) 2010-2019 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#ifndef JSNPObject_h
27#define JSNPObject_h
28
29#if ENABLE(NETSCAPE_PLUGIN_API)
30
31#include <JavaScriptCore/JSGlobalObject.h>
32#include <JavaScriptCore/JSObject.h>
33#include <JavaScriptCore/ObjectPrototype.h>
34
35typedef void* NPIdentifier;
36struct NPObject;
37
38namespace WebKit {
39
40class NPRuntimeObjectMap;
41
42// JSNPObject is a JSObject that wraps an NPObject.
43
44class JSNPObject final : public JSC::JSDestructibleObject {
45public:
46 typedef JSC::JSDestructibleObject Base;
47 static const unsigned StructureFlags = Base::StructureFlags | JSC::OverridesGetOwnPropertySlot | JSC::OverridesGetPropertyNames | JSC::OverridesGetCallData;
48
49 template<typename CellType, JSC::SubspaceAccess>
50 static JSC::IsoSubspace* subspaceFor(JSC::VM& vm)
51 {
52 return subspaceForImpl(vm);
53 }
54
55 static JSNPObject* create(JSC::JSGlobalObject* globalObject, NPRuntimeObjectMap* objectMap, NPObject* npObject)
56 {
57 JSC::Structure* structure = createStructure(globalObject->vm(), globalObject, globalObject->objectPrototype());
58 JSNPObject* object = new (JSC::allocateCell<JSNPObject>(globalObject->vm().heap)) JSNPObject(globalObject, structure, objectMap, npObject);
59 object->finishCreation(globalObject);
60 return object;
61 }
62
63 ~JSNPObject();
64 static void destroy(JSCell*);
65
66 void invalidate();
67
68 // Used to invalidate an NPObject asynchronously.
69 NPObject* leakNPObject();
70
71 JSC::JSValue callMethod(JSC::ExecState*, NPIdentifier methodName);
72 JSC::JSValue callObject(JSC::ExecState*);
73 JSC::JSValue callConstructor(JSC::ExecState*);
74
75 DECLARE_INFO;
76
77 NPObject* npObject() const { return m_npObject; }
78
79protected:
80 void finishCreation(JSC::JSGlobalObject*);
81
82private:
83 static JSC::IsoSubspace* subspaceForImpl(JSC::VM&);
84
85 JSNPObject(JSC::JSGlobalObject*, JSC::Structure*, NPRuntimeObjectMap*, NPObject*);
86
87 static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
88 {
89 return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
90 }
91
92 static JSC::CallType getCallData(JSC::JSCell*, JSC::CallData&);
93 static JSC::ConstructType getConstructData(JSC::JSCell*, JSC::ConstructData&);
94
95 static bool getOwnPropertySlot(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&);
96 static bool put(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&);
97
98 static bool deleteProperty(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName);
99 static bool deletePropertyByIndex(JSC::JSCell*, JSC::ExecState*, unsigned propertyName);
100
101 bool deleteProperty(JSC::ExecState*, NPIdentifier propertyName);
102
103 static void getOwnPropertyNames(JSC::JSObject*, JSC::ExecState*, JSC::PropertyNameArray&, JSC::EnumerationMode);
104
105 static JSC::EncodedJSValue propertyGetter(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);
106 static JSC::EncodedJSValue methodGetter(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);
107 static JSC::Exception* throwInvalidAccessError(JSC::ExecState*, JSC::ThrowScope&);
108
109 NPRuntimeObjectMap* m_objectMap;
110 NPObject* m_npObject;
111};
112
113} // namespace WebKit
114
115#endif // ENABLE(NETSCAPE_PLUGIN_API)
116
117#endif // JSNPObject_h
118