This file is indexed.

/usr/include/firefox/jswrapper.h is in firefox-dev 11.0+build1-0ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=4 sw=4 et tw=99:
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
 * May 28, 2008.
 *
 * The Initial Developer of the Original Code is
 *   Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Andreas Gal <gal@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef jswrapper_h___
#define jswrapper_h___

#include "mozilla/Attributes.h"

#include "jsapi.h"
#include "jsproxy.h"

namespace js {

/* No-op wrapper handler base class. */
class JS_FRIEND_API(Wrapper) : public ProxyHandler
{
    uintN mFlags;
  public:
    uintN flags() const { return mFlags; }

    explicit Wrapper(uintN flags);

    typedef enum { PermitObjectAccess, PermitPropertyAccess, DenyAccess } Permission;

    virtual ~Wrapper();

    /* ES5 Harmony fundamental wrapper traps. */
    virtual bool getPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
                                       PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool getOwnPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
                                          PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool defineProperty(JSContext *cx, JSObject *wrapper, jsid id,
                                PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool getOwnPropertyNames(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;
    virtual bool delete_(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool enumerate(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;
    virtual bool fix(JSContext *cx, JSObject *wrapper, Value *vp) MOZ_OVERRIDE;

    /* ES5 Harmony derived wrapper traps. */
    virtual bool has(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool hasOwn(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool get(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, Value *vp) MOZ_OVERRIDE;
    virtual bool set(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, bool strict,
                     Value *vp) MOZ_OVERRIDE;
    virtual bool keys(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;
    virtual bool iterate(JSContext *cx, JSObject *wrapper, uintN flags, Value *vp) MOZ_OVERRIDE;

    /* Spidermonkey extensions. */
    virtual bool call(JSContext *cx, JSObject *wrapper, uintN argc, Value *vp) MOZ_OVERRIDE;
    virtual bool construct(JSContext *cx, JSObject *wrapper, uintN argc, Value *argv, Value *rval) MOZ_OVERRIDE;
    virtual bool nativeCall(JSContext *cx, JSObject *wrapper, Class *clasp, Native native, CallArgs args) MOZ_OVERRIDE;
    virtual bool hasInstance(JSContext *cx, JSObject *wrapper, const Value *vp, bool *bp) MOZ_OVERRIDE;
    virtual JSType typeOf(JSContext *cx, JSObject *proxy) MOZ_OVERRIDE;
    virtual bool objectClassIs(JSObject *obj, ESClassValue classValue, JSContext *cx) MOZ_OVERRIDE;
    virtual JSString *obj_toString(JSContext *cx, JSObject *wrapper) MOZ_OVERRIDE;
    virtual JSString *fun_toString(JSContext *cx, JSObject *wrapper, uintN indent) MOZ_OVERRIDE;
    virtual bool defaultValue(JSContext *cx, JSObject *wrapper, JSType hint, Value *vp) MOZ_OVERRIDE;

    virtual void trace(JSTracer *trc, JSObject *wrapper) MOZ_OVERRIDE;

    /* Policy enforcement traps. */
    enum Action { GET, SET, CALL };
    virtual bool enter(JSContext *cx, JSObject *wrapper, jsid id, Action act, bool *bp);
    virtual void leave(JSContext *cx, JSObject *wrapper);

    static Wrapper singleton;

    static JSObject *New(JSContext *cx, JSObject *obj, JSObject *proto, JSObject *parent,
                         Wrapper *handler);

    static JSObject *wrappedObject(const JSObject *wrapper);
    static Wrapper *wrapperHandler(const JSObject *wrapper);

    enum {
        CROSS_COMPARTMENT = 1 << 0,
        LAST_USED_FLAG = CROSS_COMPARTMENT
    };

    static void *getWrapperFamily();
};

/* Base class for all cross compartment wrapper handlers. */
class JS_FRIEND_API(CrossCompartmentWrapper) : public Wrapper
{
  public:
    CrossCompartmentWrapper(uintN flags);

    virtual ~CrossCompartmentWrapper();

    /* ES5 Harmony fundamental wrapper traps. */
    virtual bool getPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
                                       PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool getOwnPropertyDescriptor(JSContext *cx, JSObject *wrapper, jsid id, bool set,
                                          PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool defineProperty(JSContext *cx, JSObject *wrapper, jsid id,
                                PropertyDescriptor *desc) MOZ_OVERRIDE;
    virtual bool getOwnPropertyNames(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;
    virtual bool delete_(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool enumerate(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;

    /* ES5 Harmony derived wrapper traps. */
    virtual bool has(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool hasOwn(JSContext *cx, JSObject *wrapper, jsid id, bool *bp) MOZ_OVERRIDE;
    virtual bool get(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, Value *vp) MOZ_OVERRIDE;
    virtual bool set(JSContext *cx, JSObject *wrapper, JSObject *receiver, jsid id, bool strict,
                     Value *vp) MOZ_OVERRIDE;
    virtual bool keys(JSContext *cx, JSObject *wrapper, AutoIdVector &props) MOZ_OVERRIDE;
    virtual bool iterate(JSContext *cx, JSObject *wrapper, uintN flags, Value *vp) MOZ_OVERRIDE;

    /* Spidermonkey extensions. */
    virtual bool call(JSContext *cx, JSObject *wrapper, uintN argc, Value *vp) MOZ_OVERRIDE;
    virtual bool construct(JSContext *cx, JSObject *wrapper, uintN argc, Value *argv, Value *rval) MOZ_OVERRIDE;
    virtual bool nativeCall(JSContext *cx, JSObject *wrapper, Class *clasp, Native native, CallArgs args) MOZ_OVERRIDE;
    virtual bool hasInstance(JSContext *cx, JSObject *wrapper, const Value *vp, bool *bp) MOZ_OVERRIDE;
    virtual JSString *obj_toString(JSContext *cx, JSObject *wrapper) MOZ_OVERRIDE;
    virtual JSString *fun_toString(JSContext *cx, JSObject *wrapper, uintN indent) MOZ_OVERRIDE;
    virtual bool defaultValue(JSContext *cx, JSObject *wrapper, JSType hint, Value *vp) MOZ_OVERRIDE;

    virtual void trace(JSTracer *trc, JSObject *wrapper) MOZ_OVERRIDE;

    static CrossCompartmentWrapper singleton;
};

/*
 * Base class for security wrappers. A security wrapper is potentially hiding
 * all or part of some wrapped object thus SecurityWrapper defaults to denying
 * access to the wrappee. This is the opposite of Wrapper which tries to be
 * completely transparent.
 *
 * NB: Currently, only a few ProxyHandler operations are overridden to deny
 * access, relying on derived SecurityWrapper to block access when necessary.
 */
template <class Base>
class JS_FRIEND_API(SecurityWrapper) : public Base
{
  public:
    SecurityWrapper(uintN flags);

    virtual bool nativeCall(JSContext *cx, JSObject *wrapper, Class *clasp, Native native, CallArgs args) MOZ_OVERRIDE;
    virtual bool objectClassIs(JSObject *obj, ESClassValue classValue, JSContext *cx) MOZ_OVERRIDE;
};

typedef SecurityWrapper<Wrapper> SameCompartmentSecurityWrapper;
typedef SecurityWrapper<CrossCompartmentWrapper> CrossCompartmentSecurityWrapper;

/*
 * A hacky class that lets a friend force a fake frame. We must already be
 * in the compartment of |target| when we enter the forced frame.
 */
class JS_FRIEND_API(ForceFrame)
{
  public:
    JSContext * const context;
    JSObject * const target;
  private:
    DummyFrameGuard *frame;

  public:
    ForceFrame(JSContext *cx, JSObject *target);
    ~ForceFrame();
    bool enter();
};

extern JSObject *
TransparentObjectWrapper(JSContext *cx, JSObject *obj, JSObject *wrappedProto, JSObject *parent,
                         uintN flags);

JS_FRIEND_API(bool) IsWrapper(const JSObject *obj);
JS_FRIEND_API(JSObject *) UnwrapObject(JSObject *obj, uintN *flagsp = NULL);
bool IsCrossCompartmentWrapper(const JSObject *obj);

} /* namespace js */

#endif