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/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2004-2020 Apple Inc. All rights reserved.
* Copyright (C) 2007 Samuel Weinig <sam@webkit.org>
* Copyright (C) 2013 Michael Pruett <michael@68k.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "JSDOMBindingSecurity.h"
#include "DocumentInlines.h"
#include "FrameDestructionObserverInlines.h"
#include "HTTPParsers.h"
#include "JSDOMExceptionHandling.h"
#include "JSDOMWindowBase.h"
#include "LocalDOMWindow.h"
#include "LocalFrame.h"
#include "SecurityOrigin.h"
#include <wtf/text/MakeString.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
using namespace JSC;
void printErrorMessageForFrame(LocalFrame* frame, const String& message)
{
if (!frame)
return;
frame->document()->domWindow()->printErrorMessage(message);
}
// FIXME: Refactor to share code with LocalDOMWindow::crossDomainAccessErrorMessage.
static String remoteFrameAccessError(JSC::JSGlobalObject* lexicalGlobalObject)
{
auto& active = activeDOMWindow(*lexicalGlobalObject);
Ref activeOrigin = active.document()->securityOrigin();
return makeString("Blocked a frame with origin \""_s, activeOrigin->toString(), "\" from accessing a cross-origin frame. Protocols, domains, and ports must match."_s);
}
// FIXME: Refactor to share more code with canAccessDocument.
static void reportErrorAccessingRemoteFrame(JSC::JSGlobalObject* lexicalGlobalObject, SecurityReportingOption reportingOption)
{
switch (reportingOption) {
case ThrowSecurityError: {
VM& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
throwSecurityError(*lexicalGlobalObject, scope, remoteFrameAccessError(lexicalGlobalObject));
break;
}
case LogSecurityError:
// FIXME: Implement.
break;
case DoNotReportSecurityError:
break;
}
}
static inline bool canAccessDocument(JSC::JSGlobalObject* lexicalGlobalObject, Document* targetDocument, SecurityReportingOption reportingOption)
{
if (!targetDocument)
return false;
if (auto* templateHost = targetDocument->templateDocumentHost())
targetDocument = templateHost;
auto& active = activeDOMWindow(*lexicalGlobalObject);
if (active.document()->protectedSecurityOrigin()->isSameOriginDomain(targetDocument->securityOrigin()))
return true;
switch (reportingOption) {
case ThrowSecurityError: {
VM& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
throwSecurityError(*lexicalGlobalObject, scope, targetDocument->domWindow()->crossDomainAccessErrorMessage(active, IncludeTargetOrigin::No));
break;
}
case LogSecurityError:
printErrorMessageForFrame(targetDocument->frame(), targetDocument->domWindow()->crossDomainAccessErrorMessage(active, IncludeTargetOrigin::Yes));
break;
case DoNotReportSecurityError:
break;
}
return false;
}
bool BindingSecurity::shouldAllowAccessToFrame(JSGlobalObject& lexicalGlobalObject, LocalFrame& frame, String& message)
{
if (BindingSecurity::shouldAllowAccessToFrame(&lexicalGlobalObject, &frame, DoNotReportSecurityError))
return true;
message = frame.document()->domWindow()->crossDomainAccessErrorMessage(activeDOMWindow(lexicalGlobalObject), IncludeTargetOrigin::No);
return false;
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSGlobalObject& lexicalGlobalObject, LocalDOMWindow* globalObject, String& message)
{
return globalObject && shouldAllowAccessToDOMWindow(lexicalGlobalObject, *globalObject, message);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSGlobalObject& lexicalGlobalObject, LocalDOMWindow& globalObject, String& message)
{
VM& vm = lexicalGlobalObject.vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
bool shouldAllowAccess = BindingSecurity::shouldAllowAccessToDOMWindow(&lexicalGlobalObject, globalObject, DoNotReportSecurityError);
EXCEPTION_ASSERT_UNUSED(scope, !scope.exception());
if (shouldAllowAccess)
return true;
message = globalObject.crossDomainAccessErrorMessage(activeDOMWindow(lexicalGlobalObject), IncludeTargetOrigin::No);
return false;
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject* lexicalGlobalObject, LocalDOMWindow& target, SecurityReportingOption reportingOption)
{
return canAccessDocument(lexicalGlobalObject, target.document(), reportingOption);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject* lexicalGlobalObject, LocalDOMWindow* target, SecurityReportingOption reportingOption)
{
return target && shouldAllowAccessToDOMWindow(lexicalGlobalObject, *target, reportingOption);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject* lexicalGlobalObject, DOMWindow* window, SecurityReportingOption reportingOption)
{
auto* localWindow = dynamicDowncast<LocalDOMWindow>(window);
if (window && !localWindow) {
reportErrorAccessingRemoteFrame(lexicalGlobalObject, reportingOption);
return false;
}
return shouldAllowAccessToDOMWindow(lexicalGlobalObject, localWindow, reportingOption);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject& lexicalGlobalObject, DOMWindow* window, String& message)
{
auto* localWindow = dynamicDowncast<LocalDOMWindow>(window);
if (window && !localWindow) {
message = remoteFrameAccessError(&lexicalGlobalObject);
return false;
}
return shouldAllowAccessToDOMWindow(lexicalGlobalObject, localWindow, message);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject* lexicalGlobalObject, DOMWindow& window, SecurityReportingOption reportingOption)
{
return shouldAllowAccessToDOMWindow(lexicalGlobalObject, &window, reportingOption);
}
bool BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject& lexicalGlobalObject, DOMWindow& window, String& message)
{
return shouldAllowAccessToDOMWindow(lexicalGlobalObject, &window, message);
}
bool BindingSecurity::shouldAllowAccessToFrame(JSC::JSGlobalObject* lexicalGlobalObject, LocalFrame* target, SecurityReportingOption reportingOption)
{
return target && canAccessDocument(lexicalGlobalObject, target->document(), reportingOption);
}
bool BindingSecurity::shouldAllowAccessToNode(JSC::JSGlobalObject& lexicalGlobalObject, Node* target)
{
return !target || canAccessDocument(&lexicalGlobalObject, &target->document(), LogSecurityError);
}
} // namespace WebCore
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