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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 "components/navigation_interception/navigation_params.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/resource_controller.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/referrer.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/url_request.h"
#include "ui/base/page_transition_types.h"
using content::BrowserThread;
using content::ChildProcessSecurityPolicy;
using ui::PageTransition;
using content::Referrer;
using content::RenderProcessHost;
using content::ResourceRequestInfo;
namespace navigation_interception {
namespace {
void CheckIfShouldIgnoreNavigationOnUIThread(
int render_process_id,
int render_frame_id,
const NavigationParams& navigation_params,
InterceptNavigationResourceThrottle::CheckOnUIThreadCallback
should_ignore_callback,
base::Callback<void(bool)> callback) {
bool should_ignore_navigation = false;
RenderProcessHost* rph = RenderProcessHost::FromID(render_process_id);
if (rph) {
NavigationParams validated_params(navigation_params);
rph->FilterURL(false, &validated_params.url());
content::RenderFrameHost* render_frame_host =
content::RenderFrameHost::FromID(render_process_id, render_frame_id);
content::WebContents* web_contents =
content::WebContents::FromRenderFrameHost(render_frame_host);
if (web_contents) {
should_ignore_navigation = should_ignore_callback.Run(web_contents,
validated_params);
}
}
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_(this) {
}
InterceptNavigationResourceThrottle::~InterceptNavigationResourceThrottle() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
}
void InterceptNavigationResourceThrottle::WillStartRequest(bool* defer) {
*defer =
CheckIfShouldIgnoreNavigation(request_->url(), request_->method(), false);
}
void InterceptNavigationResourceThrottle::WillRedirectRequest(
const GURL& new_url,
bool* defer) {
*defer =
CheckIfShouldIgnoreNavigation(new_url, GetMethodAfterRedirect(), true);
}
const char* InterceptNavigationResourceThrottle::GetNameForLogging() const {
return "InterceptNavigationResourceThrottle";
}
std::string InterceptNavigationResourceThrottle::GetMethodAfterRedirect() {
net::HttpResponseHeaders* headers = request_->response_headers();
if (!headers)
return request_->method();
// TODO(davidben): Plumb net::RedirectInfo through content::ResourceThrottle
// and unexpose net::URLRequest::ComputeMethodForRedirect.
return net::URLRequest::ComputeMethodForRedirect(
request_->method(), headers->response_code());
}
bool InterceptNavigationResourceThrottle::CheckIfShouldIgnoreNavigation(
const GURL& url,
const std::string& method,
bool is_redirect) {
const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
if (!info)
return false;
int render_process_id, render_frame_id;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_id))
return false;
NavigationParams navigation_params(url,
Referrer(GURL(request_->referrer()),
info->GetReferrerPolicy()),
info->HasUserGesture(),
method == "POST",
info->GetPageTransition(),
is_redirect);
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(
&CheckIfShouldIgnoreNavigationOnUIThread,
render_process_id,
render_frame_id,
navigation_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 navigation_interception
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