116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=99 ft=cpp:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code, released
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* June 24, 2010.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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*
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* Contributor(s):
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* Andreas Gal <gal@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "jsapi.h"
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#include "jswrapper.h"
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#include "XPCWrapper.h"
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#include "nsJSPrincipals.h"
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#include "AccessCheck.h"
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namespace xpc {
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nsIPrincipal *
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GetCompartmentPrincipal(JSCompartment *compartment)
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{
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return static_cast<nsJSPrincipals *>(compartment->principals)->nsIPrincipalPtr;
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}
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bool
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AccessCheck::isPrivileged(JSCompartment *compartment)
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{
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nsIScriptSecurityManager *ssm = XPCWrapper::GetSecurityManager();
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if(!ssm) {
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return true;
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}
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PRBool privileged;
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if(NS_SUCCEEDED(ssm->IsSystemPrincipal(GetCompartmentPrincipal(compartment), &privileged))
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&& privileged) {
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return true;
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}
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if(NS_SUCCEEDED(ssm->IsCapabilityEnabled("UniversalXPConnect", &privileged)) && privileged) {
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return true;
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}
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return false;
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}
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void
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AccessCheck::deny(JSContext *cx, jsid id)
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{
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if(id == JSVAL_VOID) {
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JS_ReportError(cx, "Permission denied to access object");
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} else {
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JSString *str = JS_ValueToString(cx, id);
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JS_ReportError(cx, "Permission denied to access property '%hs'", str);
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}
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}
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bool
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AccessCheck::enter(JSContext *cx, JSObject *wrapper, JSObject *wrappedObject, jsid id,
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JSCrossCompartmentWrapper::Mode mode)
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{
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nsIScriptSecurityManager *ssm = XPCWrapper::GetSecurityManager();
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if(!ssm) {
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return true;
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}
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JSStackFrame *fp = NULL;
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nsresult rv = ssm->PushContextPrincipal(cx, JS_FrameIterator(cx, &fp),
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GetCompartmentPrincipal(wrappedObject->getCompartment(cx)));
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if(NS_FAILED(rv)) {
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NS_WARNING("Not allowing call because we're out of memory");
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JS_ReportOutOfMemory(cx);
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return false;
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}
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return true;
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}
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void
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AccessCheck::leave(JSContext *cx, JSObject *wrapper, JSObject *wrappedObject)
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{
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nsIScriptSecurityManager *ssm = XPCWrapper::GetSecurityManager();
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if(ssm) {
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ssm->PopContextPrincipal(cx);
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}
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}
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}
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