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/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PolicyChecker.h"
#include "DocumentLoader.h"
#include "FormState.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTMLFormElement.h"
namespace WebCore {
PolicyChecker::PolicyChecker(Frame* frame)
: m_frame(frame)
, m_delegateIsDecidingNavigationPolicy(false)
, m_delegateIsHandlingUnimplementablePolicy(false)
, m_loadType(FrameLoadTypeStandard)
{
}
void PolicyChecker::checkNavigationPolicy(const ResourceRequest& newRequest, NavigationPolicyDecisionFunction function, void* argument)
{
checkNavigationPolicy(newRequest, m_frame->loader()->activeDocumentLoader(), 0, function, argument);
}
void PolicyChecker::checkNavigationPolicy(const ResourceRequest& request, DocumentLoader* loader,
PassRefPtr<FormState> formState, NavigationPolicyDecisionFunction function, void* argument)
{
NavigationAction action = loader->triggeringAction();
if (action.isEmpty()) {
action = NavigationAction(request.url(), NavigationTypeOther);
loader->setTriggeringAction(action);
}
// Don't ask more than once for the same request or if we are loading an empty URL.
// This avoids confusion on the part of the client.
if (equalIgnoringHeaderFields(request, loader->lastCheckedRequest()) || (!request.isNull() && request.url().isEmpty())) {
function(argument, request, 0, true);
loader->setLastCheckedRequest(request);
return;
}
// We are always willing to show alternate content for unreachable URLs;
// treat it like a reload so it maintains the right state for b/f list.
if (loader->substituteData().isValid() && !loader->substituteData().failingURL().isEmpty()) {
if (isBackForwardLoadType(m_loadType))
m_loadType = FrameLoadTypeReload;
function(argument, request, 0, true);
return;
}
loader->setLastCheckedRequest(request);
m_callback.set(request, formState.get(), function, argument);
m_delegateIsDecidingNavigationPolicy = true;
m_frame->loader()->client()->dispatchDecidePolicyForNavigationAction(&PolicyChecker::continueAfterNavigationPolicy,
action, request, formState);
m_delegateIsDecidingNavigationPolicy = false;
}
void PolicyChecker::checkNewWindowPolicy(const NavigationAction& action, NewWindowPolicyDecisionFunction function,
const ResourceRequest& request, PassRefPtr<FormState> formState, const String& frameName, void* argument)
{
m_callback.set(request, formState, frameName, function, argument);
m_frame->loader()->client()->dispatchDecidePolicyForNewWindowAction(&PolicyChecker::continueAfterNewWindowPolicy,
action, request, formState, frameName);
}
void PolicyChecker::checkContentPolicy(const String& MIMEType, ContentPolicyDecisionFunction function, void* argument)
{
m_callback.set(function, argument);
m_frame->loader()->client()->dispatchDecidePolicyForMIMEType(&PolicyChecker::continueAfterContentPolicy,
MIMEType, m_frame->loader()->activeDocumentLoader()->request());
}
void PolicyChecker::cancelCheck()
{
m_frame->loader()->client()->cancelPolicyCheck();
m_callback.clear();
}
void PolicyChecker::stopCheck()
{
m_frame->loader()->client()->cancelPolicyCheck();
PolicyCallback callback = m_callback;
m_callback.clear();
callback.cancel();
}
void PolicyChecker::cannotShowMIMEType(const ResourceResponse& response)
{
handleUnimplementablePolicy(m_frame->loader()->client()->cannotShowMIMETypeError(response));
}
void PolicyChecker::continueLoadAfterWillSubmitForm(PolicyAction)
{
// See header file for an explaination of why this function
// isn't like the others.
m_frame->loader()->continueLoadAfterWillSubmitForm();
}
void PolicyChecker::continueAfterNavigationPolicy(PolicyAction policy)
{
PolicyCallback callback = m_callback;
m_callback.clear();
bool shouldContinue = policy == PolicyUse;
switch (policy) {
case PolicyIgnore:
callback.clearRequest();
break;
case PolicyDownload:
m_frame->loader()->client()->startDownload(callback.request());
callback.clearRequest();
break;
case PolicyUse: {
ResourceRequest request(callback.request());
if (!m_frame->loader()->client()->canHandleRequest(request)) {
handleUnimplementablePolicy(m_frame->loader()->cannotShowURLError(callback.request()));
callback.clearRequest();
shouldContinue = false;
}
break;
}
}
callback.call(shouldContinue);
}
void PolicyChecker::continueAfterNewWindowPolicy(PolicyAction policy)
{
PolicyCallback callback = m_callback;
m_callback.clear();
switch (policy) {
case PolicyIgnore:
callback.clearRequest();
break;
case PolicyDownload:
m_frame->loader()->client()->startDownload(callback.request());
callback.clearRequest();
break;
case PolicyUse:
break;
}
callback.call(policy == PolicyUse);
}
void PolicyChecker::continueAfterContentPolicy(PolicyAction policy)
{
PolicyCallback callback = m_callback;
m_callback.clear();
callback.call(policy);
}
void PolicyChecker::handleUnimplementablePolicy(const ResourceError& error)
{
m_delegateIsHandlingUnimplementablePolicy = true;
m_frame->loader()->client()->dispatchUnableToImplementPolicy(error);
m_delegateIsHandlingUnimplementablePolicy = false;
}
} // namespace WebCore
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