The Tor Browser: js/xpconnect/wrappers/WrapperFactory.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* vim: set ts=8 sts=4 et sw=4 tw=99: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef _xpc_WRAPPERFACTORY_H

     8 #define _xpc_WRAPPERFACTORY_H

    10 #include "jswrapper.h"

    12 namespace xpc {

    14 class WrapperFactory {

    15   public:

    16     enum { WAIVE_XRAY_WRAPPER_FLAG = js::Wrapper::LAST_USED_FLAG << 1,

    17            IS_XRAY_WRAPPER_FLAG    = WAIVE_XRAY_WRAPPER_FLAG << 1 };

    19     // Return true if any of any of the nested wrappers have the flag set.

    20     static bool HasWrapperFlag(JSObject *wrapper, unsigned flag) {

    21         unsigned flags = 0;

    22         js::UncheckedUnwrap(wrapper, true, &flags);

    23         return !!(flags & flag);

    24     }

    26     static bool IsXrayWrapper(JSObject *wrapper) {

    27         return HasWrapperFlag(wrapper, IS_XRAY_WRAPPER_FLAG);

    28     }

    30     static bool HasWaiveXrayFlag(JSObject *wrapper) {

    31         return HasWrapperFlag(wrapper, WAIVE_XRAY_WRAPPER_FLAG);

    32     }

    34     static bool IsSecurityWrapper(JSObject *obj) {

    35         return !js::CheckedUnwrap(obj);

    36     }

    38     static bool IsCOW(JSObject *wrapper);

    40     static JSObject *GetXrayWaiver(JS::HandleObject obj);

    41     static JSObject *CreateXrayWaiver(JSContext *cx, JS::HandleObject obj);

    42     static JSObject *WaiveXray(JSContext *cx, JSObject *obj);

    44     static JSObject *DoubleWrap(JSContext *cx, JS::HandleObject obj, unsigned flags);

    46     // Prepare a given object for wrapping in a new compartment.

    47     static JSObject *PrepareForWrapping(JSContext *cx,

    48                                         JS::HandleObject scope,

    49                                         JS::HandleObject obj,

    50                                         unsigned flags);

    52     // Rewrap an object that is about to cross compartment boundaries.

    53     static JSObject *Rewrap(JSContext *cx,

    54                             JS::HandleObject existing,

    55                             JS::HandleObject obj,

    56                             JS::HandleObject wrappedProto,

    57                             JS::HandleObject parent,

    58                             unsigned flags);

    60     // Wrap wrapped object into a waiver wrapper and then re-wrap it.

    61     static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleValue vp);

    62     static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleObject object);

    64     // Returns true if the wrapper is in not shadowing mode for the id.

    65     static bool XrayWrapperNotShadowing(JSObject *wrapper, jsid id);

    66 };

    68 extern js::Wrapper XrayWaiver;

    70 }

    72 #endif /* _xpc_WRAPPERFACTORY_H */

The Tor Browser / file revision