chrome_resource_dispatcher_host_delegate.cc revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
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 "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
6
7#include <string>
8
9#include "base/base64.h"
10#include "base/logging.h"
11#include "chrome/browser/browser_process.h"
12#include "chrome/browser/chrome_notification_types.h"
13#include "chrome/browser/component_updater/component_updater_service.h"
14#include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
15#include "chrome/browser/content_settings/host_content_settings_map.h"
16#include "chrome/browser/download/download_request_limiter.h"
17#include "chrome/browser/download/download_resource_throttle.h"
18#include "chrome/browser/extensions/api/streams_private/streams_private_api.h"
19#include "chrome/browser/extensions/extension_renderer_state.h"
20#include "chrome/browser/extensions/user_script_listener.h"
21#include "chrome/browser/google/google_util.h"
22#include "chrome/browser/metrics/variations/variations_http_header_provider.h"
23#include "chrome/browser/prefetch/prefetch.h"
24#include "chrome/browser/prerender/prerender_manager.h"
25#include "chrome/browser/prerender/prerender_manager_factory.h"
26#include "chrome/browser/prerender/prerender_pending_swap_throttle.h"
27#include "chrome/browser/prerender/prerender_resource_throttle.h"
28#include "chrome/browser/prerender/prerender_tracker.h"
29#include "chrome/browser/prerender/prerender_util.h"
30#include "chrome/browser/profiles/profile.h"
31#include "chrome/browser/profiles/profile_io_data.h"
32#include "chrome/browser/renderer_host/safe_browsing_resource_throttle_factory.h"
33#include "chrome/browser/safe_browsing/safe_browsing_service.h"
34#include "chrome/browser/signin/signin_header_helper.h"
35#include "chrome/browser/tab_contents/tab_util.h"
36#include "chrome/browser/ui/login/login_prompt.h"
37#include "chrome/browser/ui/sync/one_click_signin_helper.h"
38#include "chrome/common/extensions/extension_constants.h"
39#include "chrome/common/extensions/mime_types_handler.h"
40#include "chrome/common/render_messages.h"
41#include "chrome/common/url_constants.h"
42#include "content/public/browser/browser_thread.h"
43#include "content/public/browser/notification_service.h"
44#include "content/public/browser/render_process_host.h"
45#include "content/public/browser/render_view_host.h"
46#include "content/public/browser/resource_context.h"
47#include "content/public/browser/resource_dispatcher_host.h"
48#include "content/public/browser/resource_request_info.h"
49#include "content/public/browser/stream_handle.h"
50#include "content/public/browser/web_contents.h"
51#include "content/public/common/resource_response.h"
52#include "extensions/browser/info_map.h"
53#include "extensions/common/constants.h"
54#include "extensions/common/user_script.h"
55#include "net/base/load_flags.h"
56#include "net/base/load_timing_info.h"
57#include "net/base/request_priority.h"
58#include "net/http/http_response_headers.h"
59#include "net/url_request/url_request.h"
60
61#if defined(ENABLE_CONFIGURATION_POLICY)
62#include "components/policy/core/common/cloud/policy_header_io_helper.h"
63#endif
64
65#if defined(ENABLE_MANAGED_USERS)
66#include "chrome/browser/managed_mode/managed_mode_resource_throttle.h"
67#endif
68
69#if defined(USE_SYSTEM_PROTOBUF)
70#include <google/protobuf/repeated_field.h>
71#else
72#include "third_party/protobuf/src/google/protobuf/repeated_field.h"
73#endif
74
75#if defined(OS_ANDROID)
76#include "chrome/browser/android/intercept_download_resource_throttle.h"
77#include "chrome/browser/ui/android/infobars/auto_login_prompter.h"
78#include "components/navigation_interception/intercept_navigation_delegate.h"
79#else
80#include "chrome/browser/apps/app_url_redirector.h"
81#include "chrome/browser/apps/ephemeral_app_throttle.h"
82#endif
83
84#if defined(OS_CHROMEOS)
85#include "chrome/browser/chromeos/login/merge_session_throttle.h"
86// TODO(oshima): Enable this for other platforms.
87#include "chrome/browser/renderer_host/offline_resource_throttle.h"
88#endif
89
90using content::BrowserThread;
91using content::RenderViewHost;
92using content::ResourceDispatcherHostLoginDelegate;
93using content::ResourceRequestInfo;
94using extensions::Extension;
95using extensions::StreamsPrivateAPI;
96
97#if defined(OS_ANDROID)
98using navigation_interception::InterceptNavigationDelegate;
99#endif
100
101namespace {
102
103ExternalProtocolHandler::Delegate* g_external_protocol_handler_delegate = NULL;
104
105void NotifyDownloadInitiatedOnUI(int render_process_id, int render_view_id) {
106  RenderViewHost* rvh = RenderViewHost::FromID(render_process_id,
107                                               render_view_id);
108  if (!rvh)
109    return;
110
111  content::NotificationService::current()->Notify(
112      chrome::NOTIFICATION_DOWNLOAD_INITIATED,
113      content::Source<RenderViewHost>(rvh),
114      content::NotificationService::NoDetails());
115}
116
117prerender::PrerenderManager* GetPrerenderManager(int render_process_id,
118                                                 int render_view_id) {
119  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
120
121  content::WebContents* web_contents =
122      tab_util::GetWebContentsByID(render_process_id, render_view_id);
123  if (!web_contents)
124    return NULL;
125
126  content::BrowserContext* browser_context = web_contents->GetBrowserContext();
127  if (!browser_context)
128    return NULL;
129
130  Profile* profile = Profile::FromBrowserContext(browser_context);
131  if (!profile)
132    return NULL;
133
134  return prerender::PrerenderManagerFactory::GetForProfile(profile);
135}
136
137void UpdatePrerenderNetworkBytesCallback(int render_process_id,
138                                         int render_view_id,
139                                         int64 bytes) {
140  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
141
142  content::WebContents* web_contents =
143      tab_util::GetWebContentsByID(render_process_id, render_view_id);
144  // PrerenderContents::FromWebContents handles the NULL case.
145  prerender::PrerenderContents* prerender_contents =
146      prerender::PrerenderContents::FromWebContents(web_contents);
147
148  if (prerender_contents)
149    prerender_contents->AddNetworkBytes(bytes);
150
151  prerender::PrerenderManager* prerender_manager =
152      GetPrerenderManager(render_process_id, render_view_id);
153  if (prerender_manager)
154    prerender_manager->AddProfileNetworkBytesIfEnabled(bytes);
155}
156
157#if !defined(OS_ANDROID)
158// Goes through the extension's file browser handlers and checks if there is one
159// that can handle the |mime_type|.
160// |extension| must not be NULL.
161bool ExtensionCanHandleMimeType(const Extension* extension,
162                                const std::string& mime_type) {
163  MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
164  if (!handler)
165    return false;
166
167  return handler->CanHandleMIMEType(mime_type);
168}
169
170void SendExecuteMimeTypeHandlerEvent(scoped_ptr<content::StreamHandle> stream,
171                                     int64 expected_content_size,
172                                     int render_process_id,
173                                     int render_view_id,
174                                     const std::string& extension_id) {
175  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
176
177  content::WebContents* web_contents =
178      tab_util::GetWebContentsByID(render_process_id, render_view_id);
179  if (!web_contents)
180    return;
181
182  // If the request was for a prerender, abort the prerender and do not
183  // continue.
184  prerender::PrerenderContents* prerender_contents =
185      prerender::PrerenderContents::FromWebContents(web_contents);
186  if (prerender_contents) {
187    prerender_contents->Destroy(prerender::FINAL_STATUS_DOWNLOAD);
188    return;
189  }
190
191  Profile* profile =
192      Profile::FromBrowserContext(web_contents->GetBrowserContext());
193
194  StreamsPrivateAPI* streams_private = StreamsPrivateAPI::Get(profile);
195  if (!streams_private)
196    return;
197  streams_private->ExecuteMimeTypeHandler(
198      extension_id, web_contents, stream.Pass(), expected_content_size);
199}
200
201void LaunchURL(const GURL& url, int render_process_id, int render_view_id,
202               bool user_gesture) {
203  // If there is no longer a WebContents, the request may have raced with tab
204  // closing. Don't fire the external request. (It may have been a prerender.)
205  content::WebContents* web_contents =
206      tab_util::GetWebContentsByID(render_process_id, render_view_id);
207  if (!web_contents)
208    return;
209
210  // Do not launch external requests attached to unswapped prerenders.
211  prerender::PrerenderContents* prerender_contents =
212      prerender::PrerenderContents::FromWebContents(web_contents);
213  if (prerender_contents) {
214    prerender_contents->Destroy(prerender::FINAL_STATUS_UNSUPPORTED_SCHEME);
215    prerender::ReportPrerenderExternalURL();
216    return;
217  }
218
219  ExternalProtocolHandler::LaunchUrlWithDelegate(
220      url, render_process_id, render_view_id,
221      g_external_protocol_handler_delegate,
222      user_gesture);
223}
224#endif  // !defined(OS_ANDROID)
225
226void AppendComponentUpdaterThrottles(
227    net::URLRequest* request,
228    content::ResourceContext* resource_context,
229    ResourceType::Type resource_type,
230    ScopedVector<content::ResourceThrottle>* throttles) {
231  const char* crx_id = NULL;
232  component_updater::ComponentUpdateService* cus =
233      g_browser_process->component_updater();
234  if (!cus)
235    return;
236  // Check for PNaCl pexe request.
237  if (resource_type == ResourceType::OBJECT) {
238    const net::HttpRequestHeaders& headers = request->extra_request_headers();
239    std::string accept_headers;
240    if (headers.GetHeader("Accept", &accept_headers)) {
241      if (accept_headers.find("application/x-pnacl") != std::string::npos &&
242          pnacl::NeedsOnDemandUpdate())
243        crx_id = "hnimpnehoodheedghdeeijklkeaacbdc";
244    }
245  }
246
247  if (crx_id) {
248    // We got a component we need to install, so throttle the resource
249    // until the component is installed.
250    throttles->push_back(cus->GetOnDemandResourceThrottle(request, crx_id));
251  }
252}
253
254}  // end namespace
255
256ChromeResourceDispatcherHostDelegate::ChromeResourceDispatcherHostDelegate(
257    prerender::PrerenderTracker* prerender_tracker)
258    : download_request_limiter_(g_browser_process->download_request_limiter()),
259      safe_browsing_(g_browser_process->safe_browsing_service()),
260      user_script_listener_(new extensions::UserScriptListener()),
261      prerender_tracker_(prerender_tracker) {
262}
263
264ChromeResourceDispatcherHostDelegate::~ChromeResourceDispatcherHostDelegate() {
265}
266
267bool ChromeResourceDispatcherHostDelegate::ShouldBeginRequest(
268    int child_id,
269    int route_id,
270    const std::string& method,
271    const GURL& url,
272    ResourceType::Type resource_type,
273    content::ResourceContext* resource_context) {
274  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
275
276  // Handle a PREFETCH resource type. If prefetch is disabled, squelch the
277  // request.  Otherwise, do a normal request to warm the cache.
278  if (resource_type == ResourceType::PREFETCH) {
279    // All PREFETCH requests should be GETs, but be defensive about it.
280    if (method != "GET")
281      return false;
282
283    // If prefetch is disabled, kill the request.
284    if (!prefetch::IsPrefetchEnabled(resource_context))
285      return false;
286  }
287
288  return true;
289}
290
291void ChromeResourceDispatcherHostDelegate::RequestBeginning(
292    net::URLRequest* request,
293    content::ResourceContext* resource_context,
294    appcache::AppCacheService* appcache_service,
295    ResourceType::Type resource_type,
296    int child_id,
297    int route_id,
298    ScopedVector<content::ResourceThrottle>* throttles) {
299  const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
300  bool is_prerendering =
301      info->GetVisibilityState() == blink::WebPageVisibilityStatePrerender;
302  if (is_prerendering) {
303    // Requests with the IGNORE_LIMITS flag set (i.e., sync XHRs)
304    // should remain at MAXIMUM_PRIORITY.
305    if (request->load_flags() & net::LOAD_IGNORE_LIMITS) {
306      DCHECK_EQ(request->priority(), net::MAXIMUM_PRIORITY);
307    } else {
308      request->SetPriority(net::IDLE);
309    }
310  }
311
312  ProfileIOData* io_data = ProfileIOData::FromResourceContext(
313      resource_context);
314
315  if (!is_prerendering && resource_type == ResourceType::MAIN_FRAME) {
316#if defined(OS_ANDROID)
317    throttles->push_back(
318        InterceptNavigationDelegate::CreateThrottleFor(request));
319#else
320    // Redirect some navigations to apps that have registered matching URL
321    // handlers ('url_handlers' in the manifest).
322    content::ResourceThrottle* url_to_app_throttle =
323        AppUrlRedirector::MaybeCreateThrottleFor(request, io_data);
324    if (url_to_app_throttle)
325      throttles->push_back(url_to_app_throttle);
326
327    // Experimental: Launch ephemeral apps from search results.
328    content::ResourceThrottle* ephemeral_app_throttle =
329        EphemeralAppThrottle::MaybeCreateThrottleForLaunch(
330            request, io_data);
331    if (ephemeral_app_throttle)
332      throttles->push_back(ephemeral_app_throttle);
333#endif
334  }
335
336#if defined(OS_CHROMEOS)
337  // Check if we need to add offline throttle. This should be done only
338  // for main frames.
339  if (resource_type == ResourceType::MAIN_FRAME) {
340    // We check offline first, then check safe browsing so that we still can
341    // block unsafe site after we remove offline page.
342    throttles->push_back(new OfflineResourceThrottle(request,
343                                                     appcache_service));
344  }
345
346  // Check if we need to add merge session throttle. This throttle will postpone
347  // loading of main frames and XHR request.
348  if (resource_type == ResourceType::MAIN_FRAME ||
349      resource_type == ResourceType::XHR) {
350    // Add interstitial page while merge session process (cookie
351    // reconstruction from OAuth2 refresh token in ChromeOS login) is still in
352    // progress while we are attempting to load a google property.
353    if (!MergeSessionThrottle::AreAllSessionMergedAlready() &&
354        request->url().SchemeIsHTTPOrHTTPS()) {
355      throttles->push_back(new MergeSessionThrottle(request, resource_type));
356    }
357  }
358#endif
359
360  // Don't attempt to append headers to requests that have already started.
361  // TODO(stevet): Remove this once the request ordering issues are resolved
362  // in crbug.com/128048.
363  if (!request->is_pending()) {
364    net::HttpRequestHeaders headers;
365    headers.CopyFrom(request->extra_request_headers());
366    bool is_off_the_record = io_data->IsOffTheRecord();
367    chrome_variations::VariationsHttpHeaderProvider::GetInstance()->
368        AppendHeaders(request->url(),
369                      is_off_the_record,
370                      !is_off_the_record &&
371                          io_data->GetMetricsEnabledStateOnIOThread(),
372                      &headers);
373    request->SetExtraRequestHeaders(headers);
374  }
375
376#if defined(ENABLE_ONE_CLICK_SIGNIN)
377  AppendChromeSyncGaiaHeader(request, resource_context);
378#endif
379
380#if defined(ENABLE_CONFIGURATION_POLICY)
381  if (io_data->policy_header_helper())
382    io_data->policy_header_helper()->AddPolicyHeaders(request);
383#endif
384
385  signin::AppendMirrorRequestHeaderIfPossible(
386      request, GURL() /* redirect_url */,
387      io_data, info->GetChildID(), info->GetRouteID());
388
389  AppendStandardResourceThrottles(request,
390                                  resource_context,
391                                  resource_type,
392                                  throttles);
393  if (!is_prerendering) {
394    AppendComponentUpdaterThrottles(request,
395                                    resource_context,
396                                    resource_type,
397                                    throttles);
398  }
399}
400
401void ChromeResourceDispatcherHostDelegate::DownloadStarting(
402    net::URLRequest* request,
403    content::ResourceContext* resource_context,
404    int child_id,
405    int route_id,
406    int request_id,
407    bool is_content_initiated,
408    bool must_download,
409    ScopedVector<content::ResourceThrottle>* throttles) {
410  BrowserThread::PostTask(
411      BrowserThread::UI, FROM_HERE,
412      base::Bind(&NotifyDownloadInitiatedOnUI, child_id, route_id));
413
414  // If it's from the web, we don't trust it, so we push the throttle on.
415  if (is_content_initiated) {
416    throttles->push_back(
417        new DownloadResourceThrottle(download_request_limiter_.get(),
418                                     child_id,
419                                     route_id,
420                                     request_id,
421                                     request->method()));
422#if defined(OS_ANDROID)
423    throttles->push_back(
424        new chrome::InterceptDownloadResourceThrottle(
425            request, child_id, route_id, request_id));
426#endif
427  }
428
429  // If this isn't a new request, we've seen this before and added the standard
430  //  resource throttles already so no need to add it again.
431  if (!request->is_pending()) {
432    AppendStandardResourceThrottles(request,
433                                    resource_context,
434                                    ResourceType::MAIN_FRAME,
435                                    throttles);
436  }
437}
438
439ResourceDispatcherHostLoginDelegate*
440    ChromeResourceDispatcherHostDelegate::CreateLoginDelegate(
441        net::AuthChallengeInfo* auth_info, net::URLRequest* request) {
442  return CreateLoginPrompt(auth_info, request);
443}
444
445bool ChromeResourceDispatcherHostDelegate::HandleExternalProtocol(
446    const GURL& url,
447    int child_id,
448    int route_id,
449    bool initiated_by_user_gesture) {
450#if defined(OS_ANDROID)
451  // Android use a resource throttle to handle external as well as internal
452  // protocols.
453  return false;
454#else
455
456  ExtensionRendererState::WebViewInfo info;
457  if (ExtensionRendererState::GetInstance()->GetWebViewInfo(child_id,
458                                                            route_id,
459                                                            &info)) {
460    return false;
461  }
462
463  BrowserThread::PostTask(
464      BrowserThread::UI, FROM_HERE,
465      base::Bind(&LaunchURL, url, child_id, route_id,
466                 initiated_by_user_gesture));
467  return true;
468#endif
469}
470
471void ChromeResourceDispatcherHostDelegate::AppendStandardResourceThrottles(
472    net::URLRequest* request,
473    content::ResourceContext* resource_context,
474    ResourceType::Type resource_type,
475    ScopedVector<content::ResourceThrottle>* throttles) {
476  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
477#if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
478  // Insert safe browsing at the front of the list, so it gets to decide on
479  // policies first.
480  if (io_data->safe_browsing_enabled()->GetValue()) {
481    bool is_subresource_request = resource_type != ResourceType::MAIN_FRAME;
482    content::ResourceThrottle* throttle =
483        SafeBrowsingResourceThrottleFactory::Create(request,
484                                                    is_subresource_request,
485                                                    safe_browsing_.get());
486    if (throttle)
487      throttles->push_back(throttle);
488  }
489#endif
490
491#if defined(ENABLE_MANAGED_USERS)
492  bool is_subresource_request = resource_type != ResourceType::MAIN_FRAME;
493  throttles->push_back(new ManagedModeResourceThrottle(
494        request, !is_subresource_request,
495        io_data->managed_mode_url_filter()));
496#endif
497
498  content::ResourceThrottle* throttle =
499      user_script_listener_->CreateResourceThrottle(request->url(),
500                                                    resource_type);
501  if (throttle)
502    throttles->push_back(throttle);
503
504  const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
505  if (info->GetVisibilityState() == blink::WebPageVisibilityStatePrerender) {
506    throttles->push_back(new prerender::PrerenderResourceThrottle(request));
507  }
508  if (prerender_tracker_->IsPendingSwapRequestOnIOThread(
509          info->GetChildID(), info->GetRenderFrameID(), request->url())) {
510    throttles->push_back(new prerender::PrerenderPendingSwapThrottle(
511        request, prerender_tracker_));
512  }
513}
514
515#if defined(ENABLE_ONE_CLICK_SIGNIN)
516void ChromeResourceDispatcherHostDelegate::AppendChromeSyncGaiaHeader(
517    net::URLRequest* request,
518    content::ResourceContext* resource_context) {
519  static const char kAllowChromeSignIn[] = "Allow-Chrome-SignIn";
520
521  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
522  OneClickSigninHelper::Offer offer =
523      OneClickSigninHelper::CanOfferOnIOThread(request, io_data);
524  switch (offer) {
525    case OneClickSigninHelper::CAN_OFFER:
526      request->SetExtraRequestHeaderByName(kAllowChromeSignIn, "1", false);
527      break;
528    case OneClickSigninHelper::DONT_OFFER:
529      request->RemoveRequestHeaderByName(kAllowChromeSignIn);
530      break;
531    case OneClickSigninHelper::IGNORE_REQUEST:
532      break;
533  }
534}
535#endif
536
537bool ChromeResourceDispatcherHostDelegate::ShouldForceDownloadResource(
538    const GURL& url, const std::string& mime_type) {
539  // Special-case user scripts to get downloaded instead of viewed.
540  return extensions::UserScript::IsURLUserScript(url, mime_type);
541}
542
543bool ChromeResourceDispatcherHostDelegate::ShouldInterceptResourceAsStream(
544    content::ResourceContext* resource_context,
545    const GURL& url,
546    const std::string& mime_type,
547    GURL* origin,
548    std::string* target_id) {
549#if !defined(OS_ANDROID)
550  ProfileIOData* io_data =
551      ProfileIOData::FromResourceContext(resource_context);
552  bool profile_is_off_the_record = io_data->IsOffTheRecord();
553  const scoped_refptr<const extensions::InfoMap> extension_info_map(
554      io_data->GetExtensionInfoMap());
555  std::vector<std::string> whitelist = MimeTypesHandler::GetMIMETypeWhitelist();
556  // Go through the white-listed extensions and try to use them to intercept
557  // the URL request.
558  for (size_t i = 0; i < whitelist.size(); ++i) {
559    const char* extension_id = whitelist[i].c_str();
560    const Extension* extension =
561        extension_info_map->extensions().GetByID(extension_id);
562    // The white-listed extension may not be installed, so we have to NULL check
563    // |extension|.
564    if (!extension ||
565        (profile_is_off_the_record &&
566         !extension_info_map->IsIncognitoEnabled(extension_id))) {
567      continue;
568    }
569
570    if (ExtensionCanHandleMimeType(extension, mime_type)) {
571      *origin = Extension::GetBaseURLFromExtensionId(extension_id);
572      *target_id = extension_id;
573      return true;
574    }
575  }
576#endif
577  return false;
578}
579
580void ChromeResourceDispatcherHostDelegate::OnStreamCreated(
581    content::ResourceContext* resource_context,
582    int render_process_id,
583    int render_view_id,
584    const std::string& target_id,
585    scoped_ptr<content::StreamHandle> stream,
586    int64 expected_content_size) {
587#if !defined(OS_ANDROID)
588  content::BrowserThread::PostTask(
589      content::BrowserThread::UI, FROM_HERE,
590      base::Bind(&SendExecuteMimeTypeHandlerEvent, base::Passed(&stream),
591                 expected_content_size, render_process_id, render_view_id,
592                 target_id));
593#endif
594}
595
596void ChromeResourceDispatcherHostDelegate::OnResponseStarted(
597    net::URLRequest* request,
598    content::ResourceContext* resource_context,
599    content::ResourceResponse* response,
600    IPC::Sender* sender) {
601  const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
602
603#if defined(OS_ANDROID)
604  // See if the response contains the X-Auto-Login header.  If so, this was
605  // a request for a login page, and the server is allowing the browser to
606  // suggest auto-login, if available.
607  AutoLoginPrompter::ShowInfoBarIfPossible(request, info->GetChildID(),
608                                           info->GetRouteID());
609#endif
610
611  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
612
613#if defined(ENABLE_ONE_CLICK_SIGNIN)
614  // See if the response contains the Google-Accounts-SignIn header.  If so,
615  // then the user has just finished signing in, and the server is allowing the
616  // browser to suggest connecting the user's profile to the account.
617  OneClickSigninHelper::ShowInfoBarIfPossible(request, io_data,
618                                              info->GetChildID(),
619                                              info->GetRouteID());
620#endif
621
622  // See if the response contains the X-Chrome-Manage-Accounts header. If so
623  // show the profile avatar bubble so that user can complete signin/out action
624  // the native UI.
625  signin::ProcessMirrorResponseHeaderIfExists(request, io_data,
626                                              info->GetChildID(),
627                                              info->GetRouteID());
628
629  // Build in additional protection for the chrome web store origin.
630  GURL webstore_url(extension_urls::GetWebstoreLaunchURL());
631  if (request->url().DomainIs(webstore_url.host().c_str())) {
632    net::HttpResponseHeaders* response_headers = request->response_headers();
633    if (!response_headers->HasHeaderValue("x-frame-options", "deny") &&
634        !response_headers->HasHeaderValue("x-frame-options", "sameorigin")) {
635      response_headers->RemoveHeader("x-frame-options");
636      response_headers->AddHeader("x-frame-options: sameorigin");
637    }
638  }
639
640  // Ignores x-frame-options for the chrome signin UI.
641  const std::string request_spec(
642      request->first_party_for_cookies().GetOrigin().spec());
643#if defined(OS_CHROMEOS)
644  if (request_spec == chrome::kChromeUIOobeURL ||
645      request_spec == chrome::kChromeUIChromeSigninURL) {
646#else
647  if (request_spec == chrome::kChromeUIChromeSigninURL) {
648#endif
649    net::HttpResponseHeaders* response_headers = request->response_headers();
650    if (response_headers->HasHeader("x-frame-options"))
651      response_headers->RemoveHeader("x-frame-options");
652  }
653
654  prerender::URLRequestResponseStarted(request);
655}
656
657void ChromeResourceDispatcherHostDelegate::OnRequestRedirected(
658    const GURL& redirect_url,
659    net::URLRequest* request,
660    content::ResourceContext* resource_context,
661    content::ResourceResponse* response) {
662  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
663  const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
664
665#if defined(ENABLE_ONE_CLICK_SIGNIN)
666  // See if the response contains the Google-Accounts-SignIn header.  If so,
667  // then the user has just finished signing in, and the server is allowing the
668  // browser to suggest connecting the user's profile to the account.
669  OneClickSigninHelper::ShowInfoBarIfPossible(request, io_data,
670                                              info->GetChildID(),
671                                              info->GetRouteID());
672  AppendChromeSyncGaiaHeader(request, resource_context);
673#endif
674
675  // In the Mirror world, Chrome should append a X-Chrome-Connected header to
676  // all Gaia requests from a connected profile so Gaia could return a 204
677  // response and let Chrome handle the action with native UI. The only
678  // exception is requests from gaia webview, since the native profile
679  // management UI is built on top of it.
680  signin::AppendMirrorRequestHeaderIfPossible(request, redirect_url, io_data,
681      info->GetChildID(), info->GetRouteID());
682}
683
684// Notification that a request has completed.
685void ChromeResourceDispatcherHostDelegate::RequestComplete(
686    net::URLRequest* url_request) {
687  // Jump on the UI thread and inform the prerender about the bytes.
688  const ResourceRequestInfo* info =
689      ResourceRequestInfo::ForRequest(url_request);
690  if (url_request && !url_request->was_cached()) {
691    BrowserThread::PostTask(BrowserThread::UI,
692                            FROM_HERE,
693                            base::Bind(&UpdatePrerenderNetworkBytesCallback,
694                                       info->GetChildID(),
695                                       info->GetRouteID(),
696                                       url_request->GetTotalReceivedBytes()));
697  }
698}
699
700// static
701void ChromeResourceDispatcherHostDelegate::
702    SetExternalProtocolHandlerDelegateForTesting(
703    ExternalProtocolHandler::Delegate* delegate) {
704  g_external_protocol_handler_delegate = delegate;
705}
706