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: 2012-06-02 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          469040 : Unwrap(JSContext *cx, JSObject *wrapper, bool stopAtOuter)
     127                 : {
     128          469040 :   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          468994 :   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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