1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * vim: set ts=4 sw=4 et tw=99:
4 * ***** BEGIN LICENSE BLOCK *****
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
17 * The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
20 * The Initial Developer of the Original Code is
22 * Portions created by the Initial Developer are Copyright (C) 2010
23 * the Initial Developer. All Rights Reserved.
26 * Andreas Gal <gal@mozilla.com>
28 * Alternatively, the contents of this file may be used under the terms of
29 * either of the GNU General Public License Version 2 or later (the "GPL"),
30 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
31 * in which case the provisions of the GPL or the LGPL are applicable instead
32 * of those above. If you wish to allow use of your version of this file only
33 * under the terms of either the GPL or the LGPL, and not to allow others to
34 * use your version of this file under the terms of the MPL, indicate your
35 * decision by deleting the provisions above and replace them with the notice
36 * and other provisions required by the GPL or the LGPL. If you do not delete
37 * the provisions above, a recipient may use your version of this file under
38 * the terms of any one of the MPL, the GPL or the LGPL.
40 * ***** END LICENSE BLOCK ***** */
42 #ifndef jswrapper_h___
43 #define jswrapper_h___
50 /* No-op wrapper handler base class. */
51 class JS_FRIEND_API(JSWrapper) : public js::JSProxyHandler {
54 uintN flags() const { return mFlags; }
56 explicit JSWrapper(uintN flags);
58 typedef enum { PermitObjectAccess, PermitPropertyAccess, DenyAccess } Permission;
62 /* ES5 Harmony fundamental wrapper traps. */
63 virtual bool getPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
64 js::PropertyDescriptor *desc);
65 virtual bool getOwnPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
66 js::PropertyDescriptor *desc);
67 virtual bool defineProperty(JSContext *cx, JSObject *wrapper, jsid id,
68 js::PropertyDescriptor *desc);
69 virtual bool getOwnPropertyNames(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
70 virtual bool delete_(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
71 virtual bool enumerate(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
72 virtual bool fix(JSContext *cx, JSObject *wrapper, js::Value *vp);
74 /* ES5 Harmony derived wrapper traps. */
75 virtual bool has(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
76 virtual bool hasOwn(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
77 virtual bool get(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, js::Value *vp);
78 virtual bool set(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, bool strict,
80 virtual bool keys(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
81 virtual bool iterate(JSContext *cx, JSObject *wrapper, uintN flags, js::Value *vp);
83 /* Spidermonkey extensions. */
84 virtual bool call(JSContext *cx, JSObject *wrapper, uintN argc, js::Value *vp);
85 virtual bool construct(JSContext *cx, JSObject *wrapper, uintN argc, js::Value *argv,
87 virtual bool hasInstance(JSContext *cx, JSObject *wrapper, const js::Value *vp, bool *bp);
88 virtual JSType typeOf(JSContext *cx, JSObject *proxy);
89 virtual JSString *obj_toString(JSContext *cx, JSObject *wrapper);
90 virtual JSString *fun_toString(JSContext *cx, JSObject *wrapper, uintN indent);
92 virtual void trace(JSTracer *trc, JSObject *wrapper);
94 /* Policy enforcement traps. */
95 enum Action { GET, SET, CALL };
96 virtual bool enter(JSContext *cx, JSObject *wrapper, jsid id, Action act, bool *bp);
97 virtual void leave(JSContext *cx, JSObject *wrapper);
99 static JSWrapper singleton;
101 static JSObject *New(JSContext *cx, JSObject *obj, JSObject *proto, JSObject *parent,
104 static inline JSObject *wrappedObject(const JSObject *wrapper) {
105 return wrapper->getProxyPrivate().toObjectOrNull();
107 static inline JSWrapper *wrapperHandler(const JSObject *wrapper) {
108 return static_cast<JSWrapper *>(wrapper->getProxyHandler());
112 CROSS_COMPARTMENT = 1 << 0,
113 LAST_USED_FLAG = CROSS_COMPARTMENT
116 static void *getWrapperFamily();
119 /* Base class for all cross compartment wrapper handlers. */
120 class JS_FRIEND_API(JSCrossCompartmentWrapper) : public JSWrapper {
122 JSCrossCompartmentWrapper(uintN flags);
124 virtual ~JSCrossCompartmentWrapper();
126 /* ES5 Harmony fundamental wrapper traps. */
127 virtual bool getPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
128 js::PropertyDescriptor *desc);
129 virtual bool getOwnPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
130 js::PropertyDescriptor *desc);
131 virtual bool defineProperty(JSContext *cx, JSObject *wrapper, jsid id,
132 js::PropertyDescriptor *desc);
133 virtual bool getOwnPropertyNames(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
134 virtual bool delete_(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
135 virtual bool enumerate(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
137 /* ES5 Harmony derived wrapper traps. */
138 virtual bool has(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
139 virtual bool hasOwn(JSContext *cx, JSObject *wrapper, jsid id, bool *bp);
140 virtual bool get(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, js::Value *vp);
141 virtual bool set(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, bool strict,
143 virtual bool keys(JSContext *cx, JSObject *wrapper, js::AutoIdVector &props);
144 virtual bool iterate(JSContext *cx, JSObject *wrapper, uintN flags, js::Value *vp);
146 /* Spidermonkey extensions. */
147 virtual bool call(JSContext *cx, JSObject *wrapper, uintN argc, js::Value *vp);
148 virtual bool construct(JSContext *cx, JSObject *wrapper,
149 uintN argc, js::Value *argv, js::Value *rval);
150 virtual bool hasInstance(JSContext *cx, JSObject *wrapper, const js::Value *vp, bool *bp);
151 virtual JSString *obj_toString(JSContext *cx, JSObject *wrapper);
152 virtual JSString *fun_toString(JSContext *cx, JSObject *wrapper, uintN indent);
154 static JSCrossCompartmentWrapper singleton;
159 class AutoCompartment
162 JSContext * const context;
163 JSCompartment * const origin;
164 JSObject * const target;
165 JSCompartment * const destination;
167 LazilyConstructed<DummyFrameGuard> frame;
169 AutoStringRooter input;
173 AutoCompartment(JSContext *cx, JSObject *target);
181 AutoCompartment(const AutoCompartment &);
182 AutoCompartment & operator=(const AutoCompartment &);
186 TransparentObjectWrapper(JSContext *cx, JSObject *obj, JSObject *wrappedProto, JSObject *parent,