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// Copyright 2015 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 "content/browser/loader/navigation_resource_throttle.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "content/browser/frame_host/navigation_handle_impl.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/resource_context.h"
#include "content/public/browser/resource_controller.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/common/referrer.h"
#include "net/url_request/redirect_info.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_job_factory.h"
#include "ui/base/page_transition_types.h"
namespace content {
namespace {
typedef base::Callback<void(NavigationThrottle::ThrottleCheckResult)>
UIChecksPerformedCallback;
void SendCheckResultToIOThread(UIChecksPerformedCallback callback,
NavigationThrottle::ThrottleCheckResult result) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK_NE(result, NavigationThrottle::DEFER);
BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
base::Bind(callback, result));
}
void CheckWillStartRequestOnUIThread(UIChecksPerformedCallback callback,
int render_process_id,
int render_frame_host_id,
bool is_post,
const Referrer& sanitized_referrer,
bool has_user_gesture,
ui::PageTransition transition,
bool is_external_protocol) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderFrameHostImpl* render_frame_host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_host_id);
if (!render_frame_host) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
NavigationHandleImpl* navigation_handle =
render_frame_host->navigation_handle();
if (!navigation_handle) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
navigation_handle->WillStartRequest(
is_post, sanitized_referrer, has_user_gesture, transition,
is_external_protocol, base::Bind(&SendCheckResultToIOThread, callback));
}
void CheckWillRedirectRequestOnUIThread(
UIChecksPerformedCallback callback,
int render_process_id,
int render_frame_host_id,
const GURL& new_url,
bool new_method_is_post,
const GURL& new_referrer_url,
bool new_is_external_protocol,
scoped_refptr<net::HttpResponseHeaders> headers) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderFrameHostImpl* render_frame_host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_host_id);
if (!render_frame_host) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
NavigationHandleImpl* navigation_handle =
render_frame_host->navigation_handle();
if (!navigation_handle) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
GURL new_validated_url(new_url);
RenderProcessHost::FromID(render_process_id)
->FilterURL(false, &new_validated_url);
navigation_handle->WillRedirectRequest(
new_validated_url, new_method_is_post, new_referrer_url,
new_is_external_protocol, headers,
base::Bind(&SendCheckResultToIOThread, callback));
}
void WillProcessResponseOnUIThread(
UIChecksPerformedCallback callback,
int render_process_id,
int render_frame_host_id,
scoped_refptr<net::HttpResponseHeaders> headers) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderFrameHostImpl* render_frame_host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_host_id);
if (!render_frame_host) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
NavigationHandleImpl* navigation_handle =
render_frame_host->navigation_handle();
if (!navigation_handle) {
SendCheckResultToIOThread(callback, NavigationThrottle::PROCEED);
return;
}
navigation_handle->WillProcessResponse(
render_frame_host, headers,
base::Bind(&SendCheckResultToIOThread, callback));
}
} // namespace
NavigationResourceThrottle::NavigationResourceThrottle(net::URLRequest* request)
: request_(request), weak_ptr_factory_(this) {}
NavigationResourceThrottle::~NavigationResourceThrottle() {}
void NavigationResourceThrottle::WillStartRequest(bool* defer) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
if (!info)
return;
int render_process_id, render_frame_id;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_id))
return;
bool is_external_protocol =
!info->GetContext()->GetRequestContext()->job_factory()->IsHandledURL(
request_->url());
UIChecksPerformedCallback callback =
base::Bind(&NavigationResourceThrottle::OnUIChecksPerformed,
weak_ptr_factory_.GetWeakPtr());
DCHECK(request_->method() == "POST" || request_->method() == "GET");
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&CheckWillStartRequestOnUIThread, callback, render_process_id,
render_frame_id, request_->method() == "POST",
Referrer::SanitizeForRequest(
request_->url(), Referrer(GURL(request_->referrer()),
info->GetReferrerPolicy())),
info->HasUserGesture(), info->GetPageTransition(),
is_external_protocol));
*defer = true;
}
void NavigationResourceThrottle::WillRedirectRequest(
const net::RedirectInfo& redirect_info,
bool* defer) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
if (!info)
return;
int render_process_id, render_frame_id;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_id))
return;
bool new_is_external_protocol =
!info->GetContext()->GetRequestContext()->job_factory()->IsHandledURL(
request_->url());
DCHECK(redirect_info.new_method == "POST" ||
redirect_info.new_method == "GET");
UIChecksPerformedCallback callback =
base::Bind(&NavigationResourceThrottle::OnUIChecksPerformed,
weak_ptr_factory_.GetWeakPtr());
// Send the redirect info to the NavigationHandle on the UI thread.
// Note: to avoid threading issues, a copy of the HttpResponseHeaders is sent
// in lieu of the original.
scoped_refptr<net::HttpResponseHeaders> response_headers;
if (request_->response_headers()) {
response_headers = new net::HttpResponseHeaders(
request_->response_headers()->raw_headers());
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&CheckWillRedirectRequestOnUIThread, callback,
render_process_id, render_frame_id, redirect_info.new_url,
redirect_info.new_method == "POST",
GURL(redirect_info.new_referrer), new_is_external_protocol,
response_headers));
*defer = true;
}
void NavigationResourceThrottle::WillProcessResponse(bool* defer) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
if (!info)
return;
int render_process_id, render_frame_id;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_id))
return;
// Send a copy of the response headers to the NavigationHandle on the UI
// thread.
scoped_refptr<net::HttpResponseHeaders> response_headers;
if (request_->response_headers()) {
response_headers = new net::HttpResponseHeaders(
request_->response_headers()->raw_headers());
}
UIChecksPerformedCallback callback =
base::Bind(&NavigationResourceThrottle::OnUIChecksPerformed,
weak_ptr_factory_.GetWeakPtr());
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&WillProcessResponseOnUIThread, callback, render_process_id,
render_frame_id, response_headers));
*defer = true;
}
const char* NavigationResourceThrottle::GetNameForLogging() const {
return "NavigationResourceThrottle";
}
void NavigationResourceThrottle::OnUIChecksPerformed(
NavigationThrottle::ThrottleCheckResult result) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (result == NavigationThrottle::CANCEL_AND_IGNORE) {
controller()->CancelAndIgnore();
} else if (result == NavigationThrottle::CANCEL) {
controller()->Cancel();
} else {
controller()->Resume();
}
}
} // namespace content
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