components/navigation_interception/intercept_navigation_resource_throttle.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/navigation_interception/intercept_navigation_resource_throttle.h"
   6
   7 #include "components/navigation_interception/navigation_params.h"
   8 #include "content/public/browser/browser_thread.h"
   9 #include "content/public/browser/child_process_security_policy.h"
  10 #include "content/public/browser/render_frame_host.h"
  11 #include "content/public/browser/render_process_host.h"
  12 #include "content/public/browser/resource_context.h"
  13 #include "content/public/browser/resource_controller.h"
  14 #include "content/public/browser/resource_request_info.h"
  15 #include "content/public/browser/web_contents.h"
  16 #include "content/public/common/referrer.h"
  17 #include "net/http/http_response_headers.h"
  18 #include "net/url_request/redirect_info.h"
  19 #include "net/url_request/url_request_context.h"
  20 #include "net/url_request/url_request_job_factory.h"
  21 #include "net/url_request/url_request.h"
  22 #include "ui/base/page_transition_types.h"
  23
  24 using content::BrowserThread;
  25 using content::ChildProcessSecurityPolicy;
  26 using ui::PageTransition;
  27 using content::Referrer;
  28 using content::RenderProcessHost;
  29 using content::ResourceRequestInfo;
  30
  31 namespace navigation_interception {
  32
  33 namespace {
  34
  35 void CheckIfShouldIgnoreNavigationOnUIThread(
  36     int render_process_id,
  37     int render_frame_id,
  38     const NavigationParams& navigation_params,
  39     InterceptNavigationResourceThrottle::CheckOnUIThreadCallback
  40     should_ignore_callback,
  41     base::Callback<void(bool)> callback) {
  42   bool should_ignore_navigation = false;
  43   RenderProcessHost* rph = RenderProcessHost::FromID(render_process_id);
  44   if (rph) {
  45     NavigationParams validated_params(navigation_params);
  46     rph->FilterURL(false, &validated_params.url());
  47
  48     content::RenderFrameHost* render_frame_host =
  49         content::RenderFrameHost::FromID(render_process_id, render_frame_id);
  50     content::WebContents* web_contents =
  51         content::WebContents::FromRenderFrameHost(render_frame_host);
  52
  53     if (web_contents) {
  54       should_ignore_navigation = should_ignore_callback.Run(web_contents,
  55                                                             validated_params);
  56     }
  57   }
  58
  59   BrowserThread::PostTask(
  60       BrowserThread::IO,
  61       FROM_HERE,
  62       base::Bind(callback, should_ignore_navigation));
  63 }
  64
  65 } // namespace
  66
  67 InterceptNavigationResourceThrottle::InterceptNavigationResourceThrottle(
  68     net::URLRequest* request,
  69     CheckOnUIThreadCallback should_ignore_callback)
  70     : request_(request),
  71       should_ignore_callback_(should_ignore_callback),
  72       weak_ptr_factory_(this) {
  73 }
  74
  75 InterceptNavigationResourceThrottle::~InterceptNavigationResourceThrottle() {
  76   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  77 }
  78
  79 void InterceptNavigationResourceThrottle::WillStartRequest(bool* defer) {
  80   *defer =
  81       CheckIfShouldIgnoreNavigation(request_->url(), request_->method(), false);
  82 }
  83
  84 void InterceptNavigationResourceThrottle::WillRedirectRequest(
  85     const net::RedirectInfo& redirect_info,
  86     bool* defer) {
  87   *defer = CheckIfShouldIgnoreNavigation(redirect_info.new_url,
  88                                          redirect_info.new_method, true);
  89 }
  90
  91 const char* InterceptNavigationResourceThrottle::GetNameForLogging() const {
  92   return "InterceptNavigationResourceThrottle";
  93 }
  94
  95 bool InterceptNavigationResourceThrottle::CheckIfShouldIgnoreNavigation(
  96     const GURL& url,
  97     const std::string& method,
  98     bool is_redirect) {
  99   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
 100   if (!info)
 101     return false;
 102
 103   int render_process_id, render_frame_id;
 104   if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_id))
 105     return false;
 106
 107   bool is_external_protocol =
 108       !info->GetContext()->GetRequestContext()->job_factory()->IsHandledURL(
 109           url);
 110   NavigationParams navigation_params(
 111       url,
 112       Referrer::SanitizeForRequest(
 113           url, Referrer(GURL(request_->referrer()), info->GetReferrerPolicy())),
 114       info->HasUserGesture(), method == "POST", info->GetPageTransition(),
 115       is_redirect, is_external_protocol);
 116
 117   BrowserThread::PostTask(
 118       BrowserThread::UI,
 119       FROM_HERE,
 120       base::Bind(
 121           &CheckIfShouldIgnoreNavigationOnUIThread,
 122           render_process_id,
 123           render_frame_id,
 124           navigation_params,
 125           should_ignore_callback_,
 126           base::Bind(
 127               &InterceptNavigationResourceThrottle::OnResultObtained,
 128               weak_ptr_factory_.GetWeakPtr())));
 129
 130   // Defer request while we wait for the UI thread to check if the navigation
 131   // should be ignored.
 132   return true;
 133 }
 134
 135 void InterceptNavigationResourceThrottle::OnResultObtained(
 136     bool should_ignore_navigation) {
 137   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 138
 139   if (should_ignore_navigation) {
 140     controller()->CancelAndIgnore();
 141   } else {
 142     controller()->Resume();
 143   }
 144 }
 145
 146 }  // namespace navigation_interception