LCOV - app.info - js/xpconnect/src/XPCWrapper.cpp

LCOV - code coverage report
| Current view: | directory - js/xpconnect/src - XPCWrapper.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 45 | 12 | 26.7 %
| Date: | 2012-07-07 | Functions: | 6 | 3 | 50.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
           2                 : /* vim: set ts=2 sw=2 et tw=78: */
           3                 : /* ***** BEGIN LICENSE BLOCK *****
           4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           5                 :  *
           6                 :  * The contents of this file are subject to the Mozilla Public License Version
           7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           8                 :  * the License. You may obtain a copy of the License at
           9                 :  * http://www.mozilla.org/MPL/
          10                 :  *
          11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          13                 :  * for the specific language governing rights and limitations under the
          14                 :  * License.
          15                 :  *
          16                 :  * The Original Code is mozilla.org code.
          17                 :  *
          18                 :  * The Initial Developer of the Original Code is
          19                 :  * The Mozilla Foundation.
          20                 :  * Portions created by the Initial Developer are Copyright (C) 2005
          21                 :  * the Initial Developer. All Rights Reserved.
          22                 :  *
          23                 :  * Contributor(s):
          24                 :  *   Johnny Stenback <jst@mozilla.org> (original author)
          25                 :  *   Brendan Eich <brendan@mozilla.org>
          26                 :  *   Boris Zbarsky <bzbarsky@mit.edu>
          27                 :  *   Blake Kaplan <mrbkap@gmail.com>
          28                 :  *
          29                 :  * Alternatively, the contents of this file may be used under the terms of
          30                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          31                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          32                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          33                 :  * of those above. If you wish to allow use of your version of this file only
          34                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          35                 :  * use your version of this file under the terms of the MPL, indicate your
          36                 :  * decision by deleting the provisions above and replace them with the notice
          37                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          38                 :  * the provisions above, a recipient may use your version of this file under
          39                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          40                 :  *
          41                 :  * ***** END LICENSE BLOCK ***** */
          42                 :
          43                 : #include "XPCWrapper.h"
          44                 : #include "AccessCheck.h"
          45                 : #include "WrapperFactory.h"
          46                 :
          47                 : namespace XPCNativeWrapper {
          48                 :
          49                 : static inline
          50                 : JSBool
          51               0 : ThrowException(nsresult ex, JSContext *cx)
          52                 : {
          53               0 :   XPCThrower::Throw(ex, cx);
          54                 :
          55               0 :   return false;
          56                 : }
          57                 :
          58                 : static JSBool
          59               0 : UnwrapNW(JSContext *cx, unsigned argc, jsval *vp)
          60                 : {
          61               0 :   if (argc != 1) {
          62               0 :     return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx);
          63                 :   }
          64                 :
          65               0 :   jsval v = JS_ARGV(cx, vp)[0];
          66               0 :   if (JSVAL_IS_PRIMITIVE(v)) {
          67               0 :     return ThrowException(NS_ERROR_INVALID_ARG, cx);
          68                 :   }
          69                 :
          70               0 :   JSObject *obj = JSVAL_TO_OBJECT(v);
          71               0 :   if (!js::IsWrapper(obj)) {
          72               0 :     JS_SET_RVAL(cx, vp, v);
          73               0 :     return true;
          74                 :   }
          75                 :
          76               0 :   if (xpc::WrapperFactory::IsXrayWrapper(obj) &&
          77               0 :       !xpc::WrapperFactory::IsPartiallyTransparent(obj)) {
          78               0 :     return JS_GetProperty(cx, obj, "wrappedJSObject", vp);
          79                 :   }
          80                 :
          81               0 :   JS_SET_RVAL(cx, vp, v);
          82               0 :   return true;
          83                 : }
          84                 :
          85                 : static JSBool
          86               0 : XrayWrapperConstructor(JSContext *cx, unsigned argc, jsval *vp)
          87                 : {
          88               0 :   if (argc == 0) {
          89               0 :     return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx);
          90                 :   }
          91                 :
          92               0 :   if (JSVAL_IS_PRIMITIVE(vp[2])) {
          93               0 :     return ThrowException(NS_ERROR_ILLEGAL_VALUE, cx);
          94                 :   }
          95                 :
          96               0 :   JSObject *obj = JSVAL_TO_OBJECT(vp[2]);
          97               0 :   if (!js::IsWrapper(obj)) {
          98               0 :     *vp = OBJECT_TO_JSVAL(obj);
          99               0 :     return true;
         100                 :   }
         101                 :
         102               0 :   obj = js::UnwrapObject(obj);
         103                 :
         104               0 :   *vp = OBJECT_TO_JSVAL(obj);
         105               0 :   return JS_WrapValue(cx, vp);
         106                 : }
         107                 : // static
         108                 : bool
         109           15475 : AttachNewConstructorObject(XPCCallContext &ccx, JSObject *aGlobalObject)
         110                 : {
         111                 :   JSFunction *xpcnativewrapper =
         112                 :     JS_DefineFunction(ccx, aGlobalObject, "XPCNativeWrapper",
         113                 :                       XrayWrapperConstructor, 1,
         114           15475 :                       JSPROP_READONLY | JSPROP_PERMANENT | JSFUN_STUB_GSOPS | JSFUN_CONSTRUCTOR);
         115           15475 :   if (!xpcnativewrapper) {
         116               0 :     return false;
         117                 :   }
         118                 :   return JS_DefineFunction(ccx, JS_GetFunctionObject(xpcnativewrapper), "unwrap", UnwrapNW, 1,
         119           15475 :                            JSPROP_READONLY | JSPROP_PERMANENT) != nsnull;
         120                 : }
         121                 : }
         122                 :
         123                 : namespace XPCWrapper {
         124                 :
         125                 : JSObject *
         126          469723 : Unwrap(JSContext *cx, JSObject *wrapper, bool stopAtOuter)
         127                 : {
         128          469723 :   if (js::IsWrapper(wrapper)) {
         129              46 :     if (xpc::AccessCheck::isScriptAccessOnly(cx, wrapper))
         130               0 :       return nsnull;
         131              46 :     return js::UnwrapObject(wrapper, stopAtOuter);
         132                 :   }
         133                 :
         134          469677 :   return nsnull;
         135                 : }
         136                 :
         137                 : JSObject *
         138            2515 : UnsafeUnwrapSecurityWrapper(JSObject *obj)
         139                 : {
         140            2515 :   if (js::IsProxy(obj)) {
         141            2515 :     return js::UnwrapObject(obj);
         142                 :   }
         143                 :
         144               0 :   return obj;
         145                 : }
         146                 :
         147                 : }

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