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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/navigation_interception/intercept_navigation_resource_throttle.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/resource_controller.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/common/page_transition_types.h"
#include "content/public/common/referrer.h"
#include "net/url_request/url_request.h"
using content::BrowserThread;
using content::ChildProcessSecurityPolicy;
using content::PageTransition;
using content::Referrer;
using content::RenderViewHost;
using content::ResourceRequestInfo;
namespace components {
namespace {
struct ShouldIgnoreCallbackParams {
int render_process_id;
int render_view_id;
GURL url;
Referrer referrer;
bool has_user_gesture;
bool is_post;
PageTransition transition_type;
};
void CheckIfShouldIgnoreNavigationOnUIThread(
const ShouldIgnoreCallbackParams& params,
InterceptNavigationResourceThrottle::CheckOnUIThreadCallback
should_ignore_callback,
base::Callback<void(bool)> callback) {
bool should_ignore_navigation = false;
RenderViewHost* rvh =
RenderViewHost::FromID(params.render_process_id, params.render_view_id);
if (rvh) {
GURL validated_url(params.url);
RenderViewHost::FilterURL(rvh->GetProcess(), false, &validated_url);
should_ignore_navigation = should_ignore_callback.Run(
rvh,
validated_url,
params.referrer,
params.is_post,
params.has_user_gesture,
params.transition_type);
}
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(callback, should_ignore_navigation));
}
} // namespace
InterceptNavigationResourceThrottle::InterceptNavigationResourceThrottle(
net::URLRequest* request,
CheckOnUIThreadCallback should_ignore_callback)
: request_(request),
should_ignore_callback_(should_ignore_callback),
weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
}
InterceptNavigationResourceThrottle::~InterceptNavigationResourceThrottle() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
}
void InterceptNavigationResourceThrottle::WillStartRequest(bool* defer) {
*defer = CheckIfShouldIgnoreNavigation(request_->url());
}
void InterceptNavigationResourceThrottle::WillRedirectRequest(
const GURL& new_url,
bool* defer) {
*defer = CheckIfShouldIgnoreNavigation(new_url);
}
bool InterceptNavigationResourceThrottle::CheckIfShouldIgnoreNavigation(
const GURL& url) {
const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
if (!info)
return false;
int render_process_id, render_view_id;
if (!info->GetAssociatedRenderView(&render_process_id, &render_view_id))
return false;
ShouldIgnoreCallbackParams params;
params.render_process_id = render_process_id;
params.render_view_id = render_view_id;
params.url = url;
params.referrer = Referrer(GURL(request_->referrer()),
info->GetReferrerPolicy());
params.has_user_gesture = info->HasUserGesture();
params.is_post = request_->method() == "POST";
params.transition_type = info->GetPageTransition();
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(
&CheckIfShouldIgnoreNavigationOnUIThread,
params,
should_ignore_callback_,
base::Bind(
&InterceptNavigationResourceThrottle::OnResultObtained,
weak_ptr_factory_.GetWeakPtr())));
// Defer request while we wait for the UI thread to check if the navigation
// should be ignored.
return true;
}
void InterceptNavigationResourceThrottle::OnResultObtained(
bool should_ignore_navigation) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (should_ignore_navigation) {
controller()->CancelAndIgnore();
} else {
controller()->Resume();
}
}
} // namespace components
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