content/child/web_url_loader_impl.cc

   1 // Copyright 2014 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 "content/child/web_url_loader_impl.h"
   6
   7 #include <algorithm>
   8 #include <deque>
   9 #include <string>
  10
  11 #include "base/bind.h"
  12 #include "base/command_line.h"
  13 #include "base/files/file_path.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/single_thread_task_runner.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/time/time.h"
  18 #include "components/mime_util/mime_util.h"
  19 #include "content/child/child_thread_impl.h"
  20 #include "content/child/ftp_directory_listing_response_delegate.h"
  21 #include "content/child/multipart_response_delegate.h"
  22 #include "content/child/request_extra_data.h"
  23 #include "content/child/request_info.h"
  24 #include "content/child/resource_dispatcher.h"
  25 #include "content/child/sync_load_response.h"
  26 #include "content/child/web_data_consumer_handle_impl.h"
  27 #include "content/child/web_url_request_util.h"
  28 #include "content/child/weburlresponse_extradata_impl.h"
  29 #include "content/common/resource_messages.h"
  30 #include "content/common/resource_request_body.h"
  31 #include "content/common/service_worker/service_worker_types.h"
  32 #include "content/public/child/fixed_received_data.h"
  33 #include "content/public/child/request_peer.h"
  34 #include "content/public/common/content_switches.h"
  35 #include "net/base/data_url.h"
  36 #include "net/base/filename_util.h"
  37 #include "net/base/net_errors.h"
  38 #include "net/http/http_response_headers.h"
  39 #include "net/http/http_util.h"
  40 #include "net/url_request/redirect_info.h"
  41 #include "net/url_request/url_request_data_job.h"
  42 #include "third_party/WebKit/public/platform/WebHTTPLoadInfo.h"
  43 #include "third_party/WebKit/public/platform/WebURL.h"
  44 #include "third_party/WebKit/public/platform/WebURLError.h"
  45 #include "third_party/WebKit/public/platform/WebURLLoadTiming.h"
  46 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  47 #include "third_party/WebKit/public/platform/WebURLRequest.h"
  48 #include "third_party/WebKit/public/platform/WebURLResponse.h"
  49 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
  50 #include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h"
  51
  52 using base::Time;
  53 using base::TimeTicks;
  54 using blink::WebData;
  55 using blink::WebHTTPBody;
  56 using blink::WebHTTPHeaderVisitor;
  57 using blink::WebHTTPLoadInfo;
  58 using blink::WebReferrerPolicy;
  59 using blink::WebSecurityPolicy;
  60 using blink::WebString;
  61 using blink::WebURL;
  62 using blink::WebURLError;
  63 using blink::WebURLLoadTiming;
  64 using blink::WebURLLoader;
  65 using blink::WebURLLoaderClient;
  66 using blink::WebURLRequest;
  67 using blink::WebURLResponse;
  68
  69 namespace content {
  70
  71 // Utilities ------------------------------------------------------------------
  72
  73 namespace {
  74
  75 const size_t kBodyStreamPipeCapacity = 4 * 1024;
  76
  77 using HeadersVector = ResourceDevToolsInfo::HeadersVector;
  78
  79 // Converts timing data from |load_timing| to the format used by WebKit.
  80 void PopulateURLLoadTiming(const net::LoadTimingInfo& load_timing,
  81                            WebURLLoadTiming* url_timing) {
  82   DCHECK(!load_timing.request_start.is_null());
  83
  84   const TimeTicks kNullTicks;
  85   url_timing->initialize();
  86   url_timing->setRequestTime(
  87       (load_timing.request_start - kNullTicks).InSecondsF());
  88   url_timing->setProxyStart(
  89       (load_timing.proxy_resolve_start - kNullTicks).InSecondsF());
  90   url_timing->setProxyEnd(
  91       (load_timing.proxy_resolve_end - kNullTicks).InSecondsF());
  92   url_timing->setDNSStart(
  93       (load_timing.connect_timing.dns_start - kNullTicks).InSecondsF());
  94   url_timing->setDNSEnd(
  95       (load_timing.connect_timing.dns_end - kNullTicks).InSecondsF());
  96   url_timing->setConnectStart(
  97       (load_timing.connect_timing.connect_start - kNullTicks).InSecondsF());
  98   url_timing->setConnectEnd(
  99       (load_timing.connect_timing.connect_end - kNullTicks).InSecondsF());
 100   url_timing->setSSLStart(
 101       (load_timing.connect_timing.ssl_start - kNullTicks).InSecondsF());
 102   url_timing->setSSLEnd(
 103       (load_timing.connect_timing.ssl_end - kNullTicks).InSecondsF());
 104   url_timing->setSendStart(
 105       (load_timing.send_start - kNullTicks).InSecondsF());
 106   url_timing->setSendEnd(
 107       (load_timing.send_end - kNullTicks).InSecondsF());
 108   url_timing->setReceiveHeadersEnd(
 109       (load_timing.receive_headers_end - kNullTicks).InSecondsF());
 110 }
 111
 112 net::RequestPriority ConvertWebKitPriorityToNetPriority(
 113     const WebURLRequest::Priority& priority) {
 114   switch (priority) {
 115     case WebURLRequest::PriorityVeryHigh:
 116       return net::HIGHEST;
 117
 118     case WebURLRequest::PriorityHigh:
 119       return net::MEDIUM;
 120
 121     case WebURLRequest::PriorityMedium:
 122       return net::LOW;
 123
 124     case WebURLRequest::PriorityLow:
 125       return net::LOWEST;
 126
 127     case WebURLRequest::PriorityVeryLow:
 128       return net::IDLE;
 129
 130     case WebURLRequest::PriorityUnresolved:
 131     default:
 132       NOTREACHED();
 133       return net::LOW;
 134   }
 135 }
 136
 137 // Extracts info from a data scheme URL into |info| and |data|. Returns net::OK
 138 // if successful. Returns a net error code otherwise. Exported only for testing.
 139 int GetInfoFromDataURL(const GURL& url,
 140                        ResourceResponseInfo* info,
 141                        std::string* data) {
 142   // Assure same time for all time fields of data: URLs.
 143   Time now = Time::Now();
 144   info->load_timing.request_start = TimeTicks::Now();
 145   info->load_timing.request_start_time = now;
 146   info->request_time = now;
 147   info->response_time = now;
 148
 149   std::string mime_type;
 150   std::string charset;
 151   scoped_refptr<net::HttpResponseHeaders> headers(
 152       new net::HttpResponseHeaders(std::string()));
 153   int result = net::URLRequestDataJob::BuildResponse(
 154       url, &mime_type, &charset, data, headers.get());
 155   if (result != net::OK)
 156     return result;
 157
 158   info->headers = headers;
 159   info->mime_type.swap(mime_type);
 160   info->charset.swap(charset);
 161   info->security_info.clear();
 162   info->content_length = data->length();
 163   info->encoded_data_length = 0;
 164
 165   return net::OK;
 166 }
 167
 168 #define STATIC_ASSERT_MATCHING_ENUMS(content_name, blink_name)       \
 169   static_assert(                                                     \
 170       static_cast<int>(content_name) == static_cast<int>(blink_name), \
 171       "mismatching enums: " #content_name)
 172
 173 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_SAME_ORIGIN,
 174                              WebURLRequest::FetchRequestModeSameOrigin);
 175 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_NO_CORS,
 176                              WebURLRequest::FetchRequestModeNoCORS);
 177 STATIC_ASSERT_MATCHING_ENUMS(FETCH_REQUEST_MODE_CORS,
 178                              WebURLRequest::FetchRequestModeCORS);
 179 STATIC_ASSERT_MATCHING_ENUMS(
 180     FETCH_REQUEST_MODE_CORS_WITH_FORCED_PREFLIGHT,
 181     WebURLRequest::FetchRequestModeCORSWithForcedPreflight);
 182
 183 FetchRequestMode GetFetchRequestMode(const WebURLRequest& request) {
 184   return static_cast<FetchRequestMode>(request.fetchRequestMode());
 185 }
 186
 187 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_OMIT,
 188                              WebURLRequest::FetchCredentialsModeOmit);
 189 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_SAME_ORIGIN,
 190                              WebURLRequest::FetchCredentialsModeSameOrigin);
 191 STATIC_ASSERT_MATCHING_ENUMS(FETCH_CREDENTIALS_MODE_INCLUDE,
 192                              WebURLRequest::FetchCredentialsModeInclude);
 193
 194 FetchCredentialsMode GetFetchCredentialsMode(const WebURLRequest& request) {
 195   return static_cast<FetchCredentialsMode>(request.fetchCredentialsMode());
 196 }
 197
 198 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_AUXILIARY,
 199                              WebURLRequest::FrameTypeAuxiliary);
 200 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_NESTED,
 201                              WebURLRequest::FrameTypeNested);
 202 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_NONE,
 203                              WebURLRequest::FrameTypeNone);
 204 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_FRAME_TYPE_TOP_LEVEL,
 205                              WebURLRequest::FrameTypeTopLevel);
 206
 207 RequestContextFrameType GetRequestContextFrameType(
 208     const WebURLRequest& request) {
 209   return static_cast<RequestContextFrameType>(request.frameType());
 210 }
 211
 212 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_UNSPECIFIED,
 213                              WebURLRequest::RequestContextUnspecified);
 214 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_AUDIO,
 215                              WebURLRequest::RequestContextAudio);
 216 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_BEACON,
 217                              WebURLRequest::RequestContextBeacon);
 218 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_CSP_REPORT,
 219                              WebURLRequest::RequestContextCSPReport);
 220 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_DOWNLOAD,
 221                              WebURLRequest::RequestContextDownload);
 222 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_EMBED,
 223                              WebURLRequest::RequestContextEmbed);
 224 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_EVENT_SOURCE,
 225                              WebURLRequest::RequestContextEventSource);
 226 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FAVICON,
 227                              WebURLRequest::RequestContextFavicon);
 228 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FETCH,
 229                              WebURLRequest::RequestContextFetch);
 230 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FONT,
 231                              WebURLRequest::RequestContextFont);
 232 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FORM,
 233                              WebURLRequest::RequestContextForm);
 234 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_FRAME,
 235                              WebURLRequest::RequestContextFrame);
 236 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_HYPERLINK,
 237                              WebURLRequest::RequestContextHyperlink);
 238 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IFRAME,
 239                              WebURLRequest::RequestContextIframe);
 240 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMAGE,
 241                              WebURLRequest::RequestContextImage);
 242 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMAGE_SET,
 243                              WebURLRequest::RequestContextImageSet);
 244 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_IMPORT,
 245                              WebURLRequest::RequestContextImport);
 246 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_INTERNAL,
 247                              WebURLRequest::RequestContextInternal);
 248 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_LOCATION,
 249                              WebURLRequest::RequestContextLocation);
 250 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_MANIFEST,
 251                              WebURLRequest::RequestContextManifest);
 252 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_OBJECT,
 253                              WebURLRequest::RequestContextObject);
 254 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PING,
 255                              WebURLRequest::RequestContextPing);
 256 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PLUGIN,
 257                              WebURLRequest::RequestContextPlugin);
 258 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_PREFETCH,
 259                              WebURLRequest::RequestContextPrefetch);
 260 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SCRIPT,
 261                              WebURLRequest::RequestContextScript);
 262 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SERVICE_WORKER,
 263                              WebURLRequest::RequestContextServiceWorker);
 264 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SHARED_WORKER,
 265                              WebURLRequest::RequestContextSharedWorker);
 266 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_SUBRESOURCE,
 267                              WebURLRequest::RequestContextSubresource);
 268 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_STYLE,
 269                              WebURLRequest::RequestContextStyle);
 270 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_TRACK,
 271                              WebURLRequest::RequestContextTrack);
 272 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_VIDEO,
 273                              WebURLRequest::RequestContextVideo);
 274 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_WORKER,
 275                              WebURLRequest::RequestContextWorker);
 276 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_XML_HTTP_REQUEST,
 277                              WebURLRequest::RequestContextXMLHttpRequest);
 278 STATIC_ASSERT_MATCHING_ENUMS(REQUEST_CONTEXT_TYPE_XSLT,
 279                              WebURLRequest::RequestContextXSLT);
 280
 281 RequestContextType GetRequestContextType(const WebURLRequest& request) {
 282   return static_cast<RequestContextType>(request.requestContext());
 283 }
 284
 285 }  // namespace
 286
 287 // WebURLLoaderImpl::Context --------------------------------------------------
 288
 289 // This inner class exists since the WebURLLoader may be deleted while inside a
 290 // call to WebURLLoaderClient.  Refcounting is to keep the context from being
 291 // deleted if it may have work to do after calling into the client.
 292 class WebURLLoaderImpl::Context : public base::RefCounted<Context>,
 293                                   public RequestPeer {
 294  public:
 295   Context(WebURLLoaderImpl* loader,
 296           ResourceDispatcher* resource_dispatcher,
 297           scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 298
 299   WebURLLoaderClient* client() const { return client_; }
 300   void set_client(WebURLLoaderClient* client) { client_ = client; }
 301
 302   void Cancel();
 303   void SetDefersLoading(bool value);
 304   void DidChangePriority(WebURLRequest::Priority new_priority,
 305                          int intra_priority_value);
 306   bool AttachThreadedDataReceiver(
 307       blink::WebThreadedDataReceiver* threaded_data_receiver);
 308   void Start(const WebURLRequest& request,
 309              SyncLoadResponse* sync_load_response);
 310
 311   // RequestPeer methods:
 312   void OnUploadProgress(uint64 position, uint64 size) override;
 313   bool OnReceivedRedirect(const net::RedirectInfo& redirect_info,
 314                           const ResourceResponseInfo& info) override;
 315   void OnReceivedResponse(const ResourceResponseInfo& info) override;
 316   void OnDownloadedData(int len, int encoded_data_length) override;
 317   void OnReceivedData(scoped_ptr<ReceivedData> data) override;
 318   void OnReceivedCachedMetadata(const char* data, int len) override;
 319   void OnCompletedRequest(int error_code,
 320                           bool was_ignored_by_handler,
 321                           bool stale_copy_in_cache,
 322                           const std::string& security_info,
 323                           const base::TimeTicks& completion_time,
 324                           int64 total_transfer_size) override;
 325
 326  private:
 327   friend class base::RefCounted<Context>;
 328   ~Context() override;
 329
 330   // We can optimize the handling of data URLs in most cases.
 331   bool CanHandleDataURLRequestLocally() const;
 332   void HandleDataURL();
 333   MojoResult WriteDataOnBodyStream(const char* data, size_t size);
 334   void OnHandleGotWritable(MojoResult);
 335
 336   WebURLLoaderImpl* loader_;
 337   WebURLRequest request_;
 338   WebURLLoaderClient* client_;
 339   ResourceDispatcher* resource_dispatcher_;
 340   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 341   WebReferrerPolicy referrer_policy_;
 342   scoped_ptr<FtpDirectoryListingResponseDelegate> ftp_listing_delegate_;
 343   scoped_ptr<MultipartResponseDelegate> multipart_delegate_;
 344   scoped_ptr<StreamOverrideParameters> stream_override_;
 345   mojo::ScopedDataPipeProducerHandle body_stream_writer_;
 346   mojo::common::HandleWatcher body_stream_writer_watcher_;
 347   // TODO(yhirano): Delete this buffer after implementing the back-pressure
 348   // mechanism.
 349   std::deque<char> body_stream_buffer_;
 350   bool got_all_stream_body_data_;
 351   enum DeferState {NOT_DEFERRING, SHOULD_DEFER, DEFERRED_DATA};
 352   DeferState defers_loading_;
 353   int request_id_;
 354 };
 355
 356 WebURLLoaderImpl::Context::Context(
 357     WebURLLoaderImpl* loader,
 358     ResourceDispatcher* resource_dispatcher,
 359     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
 360     : loader_(loader),
 361       client_(NULL),
 362       resource_dispatcher_(resource_dispatcher),
 363       task_runner_(task_runner),
 364       referrer_policy_(blink::WebReferrerPolicyDefault),
 365       got_all_stream_body_data_(false),
 366       defers_loading_(NOT_DEFERRING),
 367       request_id_(-1) {
 368 }
 369
 370 void WebURLLoaderImpl::Context::Cancel() {
 371   if (resource_dispatcher_ && // NULL in unittest.
 372       request_id_ != -1) {
 373     resource_dispatcher_->Cancel(request_id_);
 374     request_id_ = -1;
 375   }
 376
 377   // Ensure that we do not notify the multipart delegate anymore as it has
 378   // its own pointer to the client.
 379   if (multipart_delegate_)
 380     multipart_delegate_->Cancel();
 381   // Ditto for the ftp delegate.
 382   if (ftp_listing_delegate_)
 383     ftp_listing_delegate_->Cancel();
 384
 385   // Do not make any further calls to the client.
 386   client_ = NULL;
 387   loader_ = NULL;
 388 }
 389
 390 void WebURLLoaderImpl::Context::SetDefersLoading(bool value) {
 391   if (request_id_ != -1)
 392     resource_dispatcher_->SetDefersLoading(request_id_, value);
 393   if (value && defers_loading_ == NOT_DEFERRING) {
 394     defers_loading_ = SHOULD_DEFER;
 395   } else if (!value && defers_loading_ != NOT_DEFERRING) {
 396     if (defers_loading_ == DEFERRED_DATA) {
 397       task_runner_->PostTask(FROM_HERE,
 398                              base::Bind(&Context::HandleDataURL, this));
 399     }
 400     defers_loading_ = NOT_DEFERRING;
 401   }
 402 }
 403
 404 void WebURLLoaderImpl::Context::DidChangePriority(
 405     WebURLRequest::Priority new_priority, int intra_priority_value) {
 406   if (request_id_ != -1) {
 407     resource_dispatcher_->DidChangePriority(
 408         request_id_,
 409         ConvertWebKitPriorityToNetPriority(new_priority),
 410         intra_priority_value);
 411   }
 412 }
 413
 414 bool WebURLLoaderImpl::Context::AttachThreadedDataReceiver(
 415     blink::WebThreadedDataReceiver* threaded_data_receiver) {
 416   if (request_id_ != -1) {
 417     return resource_dispatcher_->AttachThreadedDataReceiver(
 418         request_id_, threaded_data_receiver);
 419   }
 420
 421   return false;
 422 }
 423
 424 void WebURLLoaderImpl::Context::Start(const WebURLRequest& request,
 425                                       SyncLoadResponse* sync_load_response) {
 426   DCHECK(request_id_ == -1);
 427   request_ = request;  // Save the request.
 428   if (request.extraData()) {
 429     RequestExtraData* extra_data =
 430         static_cast<RequestExtraData*>(request.extraData());
 431     stream_override_ = extra_data->TakeStreamOverrideOwnership();
 432   }
 433
 434   GURL url = request.url();
 435
 436   // PlzNavigate: during navigation, the renderer should request a stream which
 437   // contains the body of the response. The request has already been made by the
 438   // browser.
 439   if (stream_override_.get()) {
 440     CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
 441         switches::kEnableBrowserSideNavigation));
 442     DCHECK(!sync_load_response);
 443     DCHECK_NE(WebURLRequest::FrameTypeNone, request.frameType());
 444     DCHECK_EQ("GET", request.httpMethod().latin1());
 445     url = stream_override_->stream_url;
 446   }
 447
 448   if (CanHandleDataURLRequestLocally()) {
 449     if (sync_load_response) {
 450       // This is a sync load. Do the work now.
 451       sync_load_response->url = url;
 452       sync_load_response->error_code =
 453           GetInfoFromDataURL(sync_load_response->url, sync_load_response,
 454                              &sync_load_response->data);
 455     } else {
 456       task_runner_->PostTask(FROM_HERE,
 457                              base::Bind(&Context::HandleDataURL, this));
 458     }
 459     return;
 460   }
 461
 462   // PlzNavigate: outside of tests, the only navigation requests going through
 463   // the WebURLLoader are the ones created by CommitNavigation. Several browser
 464   // tests load HTML directly through a data url which will be handled by the
 465   // block above.
 466   DCHECK_IMPLIES(base::CommandLine::ForCurrentProcess()->HasSwitch(
 467                      switches::kEnableBrowserSideNavigation),
 468                  stream_override_.get() ||
 469                      request.frameType() == WebURLRequest::FrameTypeNone);
 470
 471   GURL referrer_url(
 472       request.httpHeaderField(WebString::fromUTF8("Referer")).latin1());
 473   const std::string& method = request.httpMethod().latin1();
 474
 475   // TODO(brettw) this should take parameter encoding into account when
 476   // creating the GURLs.
 477
 478   // TODO(horo): Check credentials flag is unset when credentials mode is omit.
 479   //             Check credentials flag is set when credentials mode is include.
 480
 481   RequestInfo request_info;
 482   request_info.method = method;
 483   request_info.url = url;
 484   request_info.first_party_for_cookies = request.firstPartyForCookies();
 485   referrer_policy_ = request.referrerPolicy();
 486   request_info.referrer = Referrer(referrer_url, referrer_policy_);
 487   request_info.headers = GetWebURLRequestHeaders(request);
 488   request_info.load_flags = GetLoadFlagsForWebURLRequest(request);
 489   request_info.enable_load_timing = true;
 490   request_info.enable_upload_progress = request.reportUploadProgress();
 491   if (request.requestContext() == WebURLRequest::RequestContextXMLHttpRequest &&
 492       (url.has_username() || url.has_password())) {
 493     request_info.do_not_prompt_for_login = true;
 494   }
 495   // requestor_pid only needs to be non-zero if the request originates outside
 496   // the render process, so we can use requestorProcessID even for requests
 497   // from in-process plugins.
 498   request_info.requestor_pid = request.requestorProcessID();
 499   request_info.request_type = WebURLRequestToResourceType(request);
 500   request_info.priority =
 501       ConvertWebKitPriorityToNetPriority(request.priority());
 502   request_info.appcache_host_id = request.appCacheHostID();
 503   request_info.routing_id = request.requestorID();
 504   request_info.download_to_file = request.downloadToFile();
 505   request_info.has_user_gesture = request.hasUserGesture();
 506   request_info.skip_service_worker = request.skipServiceWorker();
 507   request_info.should_reset_appcache = request.shouldResetAppCache();
 508   request_info.fetch_request_mode = GetFetchRequestMode(request);
 509   request_info.fetch_credentials_mode = GetFetchCredentialsMode(request);
 510   request_info.fetch_request_context_type = GetRequestContextType(request);
 511   request_info.fetch_frame_type = GetRequestContextFrameType(request);
 512   request_info.extra_data = request.extraData();
 513
 514   scoped_refptr<ResourceRequestBody> request_body =
 515       GetRequestBodyForWebURLRequest(request).get();
 516
 517   if (sync_load_response) {
 518     resource_dispatcher_->StartSync(
 519         request_info, request_body.get(), sync_load_response);
 520     return;
 521   }
 522
 523   request_id_ = resource_dispatcher_->StartAsync(
 524       request_info, request_body.get(), this);
 525 }
 526
 527 void WebURLLoaderImpl::Context::OnUploadProgress(uint64 position, uint64 size) {
 528   if (client_)
 529     client_->didSendData(loader_, position, size);
 530 }
 531
 532 bool WebURLLoaderImpl::Context::OnReceivedRedirect(
 533     const net::RedirectInfo& redirect_info,
 534     const ResourceResponseInfo& info) {
 535   if (!client_)
 536     return false;
 537
 538   WebURLResponse response;
 539   response.initialize();
 540   PopulateURLResponse(request_.url(), info, &response);
 541
 542   // TODO(darin): We lack sufficient information to construct the actual
 543   // request that resulted from the redirect.
 544   WebURLRequest new_request(redirect_info.new_url);
 545   new_request.setFirstPartyForCookies(
 546       redirect_info.new_first_party_for_cookies);
 547   new_request.setDownloadToFile(request_.downloadToFile());
 548   new_request.setRequestContext(request_.requestContext());
 549   new_request.setFrameType(request_.frameType());
 550   new_request.setSkipServiceWorker(request_.skipServiceWorker());
 551   new_request.setShouldResetAppCache(request_.shouldResetAppCache());
 552   new_request.setFetchRequestMode(request_.fetchRequestMode());
 553   new_request.setFetchCredentialsMode(request_.fetchCredentialsMode());
 554
 555   new_request.setHTTPReferrer(WebString::fromUTF8(redirect_info.new_referrer),
 556                               referrer_policy_);
 557
 558   std::string old_method = request_.httpMethod().utf8();
 559   new_request.setHTTPMethod(WebString::fromUTF8(redirect_info.new_method));
 560   if (redirect_info.new_method == old_method)
 561     new_request.setHTTPBody(request_.httpBody());
 562
 563   // Protect from deletion during call to willSendRequest.
 564   scoped_refptr<Context> protect(this);
 565
 566   client_->willSendRequest(loader_, new_request, response);
 567   request_ = new_request;
 568
 569   // Only follow the redirect if WebKit left the URL unmodified.
 570   if (redirect_info.new_url == GURL(new_request.url())) {
 571     // First-party cookie logic moved from DocumentLoader in Blink to
 572     // net::URLRequest in the browser. Assert that Blink didn't try to change it
 573     // to something else.
 574     DCHECK_EQ(redirect_info.new_first_party_for_cookies.spec(),
 575               request_.firstPartyForCookies().string().utf8());
 576     return true;
 577   }
 578
 579   // We assume that WebKit only changes the URL to suppress a redirect, and we
 580   // assume that it does so by setting it to be invalid.
 581   DCHECK(!new_request.url().isValid());
 582   return false;
 583 }
 584
 585 void WebURLLoaderImpl::Context::OnReceivedResponse(
 586     const ResourceResponseInfo& initial_info) {
 587   if (!client_)
 588     return;
 589
 590   ResourceResponseInfo info = initial_info;
 591
 592   // PlzNavigate: during navigations, the ResourceResponse has already been
 593   // received on the browser side, and has been passed down to the renderer.
 594   if (stream_override_.get()) {
 595     CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
 596         switches::kEnableBrowserSideNavigation));
 597     info = stream_override_->response;
 598   }
 599
 600   WebURLResponse response;
 601   response.initialize();
 602   PopulateURLResponse(request_.url(), info, &response);
 603
 604   bool show_raw_listing = (GURL(request_.url()).query() == "raw");
 605
 606   if (info.mime_type == "text/vnd.chromium.ftp-dir") {
 607     if (show_raw_listing) {
 608       // Set the MIME type to plain text to prevent any active content.
 609       response.setMIMEType("text/plain");
 610     } else {
 611       // We're going to produce a parsed listing in HTML.
 612       response.setMIMEType("text/html");
 613     }
 614   }
 615
 616   // Prevent |this| from being destroyed if the client destroys the loader,
 617   // ether in didReceiveResponse, or when the multipart/ftp delegate calls into
 618   // it.
 619   scoped_refptr<Context> protect(this);
 620
 621   if (request_.useStreamOnResponse()) {
 622     MojoCreateDataPipeOptions options;
 623     options.struct_size = sizeof(MojoCreateDataPipeOptions);
 624     options.flags = MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE;
 625     options.element_num_bytes = 1;
 626     options.capacity_num_bytes = kBodyStreamPipeCapacity;
 627
 628     mojo::ScopedDataPipeConsumerHandle consumer;
 629     MojoResult result = mojo::CreateDataPipe(&options,
 630                                              &body_stream_writer_,
 631                                              &consumer);
 632     if (result != MOJO_RESULT_OK) {
 633       // TODO(yhirano): Handle the error.
 634       return;
 635     }
 636     client_->didReceiveResponse(
 637         loader_, response, new WebDataConsumerHandleImpl(consumer.Pass()));
 638   } else {
 639     client_->didReceiveResponse(loader_, response);
 640   }
 641
 642   // We may have been cancelled after didReceiveResponse, which would leave us
 643   // without a client and therefore without much need to do further handling.
 644   if (!client_)
 645     return;
 646
 647   DCHECK(!ftp_listing_delegate_.get());
 648   DCHECK(!multipart_delegate_.get());
 649   if (info.headers.get() && info.mime_type == "multipart/x-mixed-replace") {
 650     std::string content_type;
 651     info.headers->EnumerateHeader(NULL, "content-type", &content_type);
 652
 653     std::string mime_type;
 654     std::string charset;
 655     bool had_charset = false;
 656     std::string boundary;
 657     net::HttpUtil::ParseContentType(content_type, &mime_type, &charset,
 658                                     &had_charset, &boundary);
 659     base::TrimString(boundary, " \"", &boundary);
 660
 661     // If there's no boundary, just handle the request normally.  In the gecko
 662     // code, nsMultiMixedConv::OnStartRequest throws an exception.
 663     if (!boundary.empty()) {
 664       multipart_delegate_.reset(
 665           new MultipartResponseDelegate(client_, loader_, response, boundary));
 666     }
 667   } else if (info.mime_type == "text/vnd.chromium.ftp-dir" &&
 668              !show_raw_listing) {
 669     ftp_listing_delegate_.reset(
 670         new FtpDirectoryListingResponseDelegate(client_, loader_, response));
 671   }
 672 }
 673
 674 void WebURLLoaderImpl::Context::OnDownloadedData(int len,
 675                                                  int encoded_data_length) {
 676   if (client_)
 677     client_->didDownloadData(loader_, len, encoded_data_length);
 678 }
 679
 680 void WebURLLoaderImpl::Context::OnReceivedData(scoped_ptr<ReceivedData> data) {
 681   const char* payload = data->payload();
 682   int data_length = data->length();
 683   int encoded_data_length = data->encoded_length();
 684   if (!client_)
 685     return;
 686
 687   if (request_.useStreamOnResponse()) {
 688     // We don't support ftp_listening_delegate_ and multipart_delegate_ for now.
 689     // TODO(yhirano): Support ftp listening and multipart.
 690     MojoResult rv = WriteDataOnBodyStream(payload, data_length);
 691     if (rv != MOJO_RESULT_OK && client_) {
 692       client_->didFail(
 693           loader_, CreateWebURLError(request_.url(), false, net::ERR_FAILED));
 694     }
 695   } else if (ftp_listing_delegate_) {
 696     // The FTP listing delegate will make the appropriate calls to
 697     // client_->didReceiveData and client_->didReceiveResponse.  Since the
 698     // delegate may want to do work after sending data to the delegate, keep
 699     // |this| and the delegate alive until it's finished handling the data.
 700     scoped_refptr<Context> protect(this);
 701     ftp_listing_delegate_->OnReceivedData(payload, data_length);
 702   } else if (multipart_delegate_) {
 703     // The multipart delegate will make the appropriate calls to
 704     // client_->didReceiveData and client_->didReceiveResponse.  Since the
 705     // delegate may want to do work after sending data to the delegate, keep
 706     // |this| and the delegate alive until it's finished handling the data.
 707     scoped_refptr<Context> protect(this);
 708     multipart_delegate_->OnReceivedData(payload, data_length,
 709                                         encoded_data_length);
 710   } else {
 711     client_->didReceiveData(loader_, payload, data_length, encoded_data_length);
 712   }
 713 }
 714
 715 void WebURLLoaderImpl::Context::OnReceivedCachedMetadata(
 716     const char* data, int len) {
 717   if (client_)
 718     client_->didReceiveCachedMetadata(loader_, data, len);
 719 }
 720
 721 void WebURLLoaderImpl::Context::OnCompletedRequest(
 722     int error_code,
 723     bool was_ignored_by_handler,
 724     bool stale_copy_in_cache,
 725     const std::string& security_info,
 726     const base::TimeTicks& completion_time,
 727     int64 total_transfer_size) {
 728   // The WebURLLoaderImpl may be deleted in any of the calls to the client or
 729   // the delegates below (As they also may call in to the client).  Keep |this|
 730   // alive in that case, to avoid a crash.  If that happens, the request will be
 731   // cancelled and |client_| will be set to NULL.
 732   scoped_refptr<Context> protect(this);
 733
 734   if (ftp_listing_delegate_) {
 735     ftp_listing_delegate_->OnCompletedRequest();
 736     ftp_listing_delegate_.reset(NULL);
 737   } else if (multipart_delegate_) {
 738     multipart_delegate_->OnCompletedRequest();
 739     multipart_delegate_.reset(NULL);
 740   }
 741
 742   if (client_) {
 743     if (error_code != net::OK) {
 744       client_->didFail(
 745           loader_,
 746           CreateWebURLError(request_.url(), stale_copy_in_cache, error_code));
 747     } else {
 748       if (request_.useStreamOnResponse()) {
 749         got_all_stream_body_data_ = true;
 750         if (body_stream_buffer_.empty()) {
 751           // Close the handle to notify the end of data.
 752           body_stream_writer_.reset();
 753           client_->didFinishLoading(
 754               loader_, (completion_time - TimeTicks()).InSecondsF(),
 755               total_transfer_size);
 756         }
 757       } else {
 758         client_->didFinishLoading(
 759             loader_, (completion_time - TimeTicks()).InSecondsF(),
 760             total_transfer_size);
 761       }
 762     }
 763   }
 764 }
 765
 766 WebURLLoaderImpl::Context::~Context() {
 767   if (request_id_ >= 0) {
 768     resource_dispatcher_->RemovePendingRequest(request_id_);
 769   }
 770 }
 771
 772 bool WebURLLoaderImpl::Context::CanHandleDataURLRequestLocally() const {
 773   GURL url = request_.url();
 774   if (!url.SchemeIs(url::kDataScheme))
 775     return false;
 776
 777   // The fast paths for data URL, Start() and HandleDataURL(), don't support
 778   // the downloadToFile option.
 779   if (request_.downloadToFile())
 780     return false;
 781
 782   // Data url requests from object tags may need to be intercepted as streams
 783   // and so need to be sent to the browser.
 784   if (request_.requestContext() == WebURLRequest::RequestContextObject)
 785     return false;
 786
 787   // Optimize for the case where we can handle a data URL locally.  We must
 788   // skip this for data URLs targetted at frames since those could trigger a
 789   // download.
 790   //
 791   // NOTE: We special case MIME types we can render both for performance
 792   // reasons as well as to support unit tests.
 793
 794 #if defined(OS_ANDROID)
 795   // For compatibility reasons on Android we need to expose top-level data://
 796   // to the browser.
 797   if (request_.frameType() == WebURLRequest::FrameTypeTopLevel)
 798     return false;
 799 #endif
 800
 801   if (request_.frameType() != WebURLRequest::FrameTypeTopLevel &&
 802       request_.frameType() != WebURLRequest::FrameTypeNested)
 803     return true;
 804
 805   std::string mime_type, unused_charset;
 806   if (net::DataURL::Parse(request_.url(), &mime_type, &unused_charset, NULL) &&
 807       mime_util::IsSupportedMimeType(mime_type))
 808     return true;
 809
 810   return false;
 811 }
 812
 813 void WebURLLoaderImpl::Context::HandleDataURL() {
 814   DCHECK_NE(defers_loading_, DEFERRED_DATA);
 815   if (defers_loading_ == SHOULD_DEFER) {
 816       defers_loading_ = DEFERRED_DATA;
 817       return;
 818   }
 819
 820   ResourceResponseInfo info;
 821   std::string data;
 822
 823   int error_code = GetInfoFromDataURL(request_.url(), &info, &data);
 824
 825   if (error_code == net::OK) {
 826     OnReceivedResponse(info);
 827     if (!data.empty())
 828       OnReceivedData(
 829           make_scoped_ptr(new FixedReceivedData(data.data(), data.size(), 0)));
 830   }
 831
 832   OnCompletedRequest(error_code, false, false, info.security_info,
 833                      base::TimeTicks::Now(), 0);
 834 }
 835
 836 MojoResult WebURLLoaderImpl::Context::WriteDataOnBodyStream(const char* data,
 837                                                             size_t size) {
 838   if (body_stream_buffer_.empty() && size == 0) {
 839     // Nothing to do.
 840     return MOJO_RESULT_OK;
 841   }
 842
 843   if (!body_stream_writer_.is_valid()) {
 844     // The handle is already cleared.
 845     return MOJO_RESULT_OK;
 846   }
 847
 848   char* buffer = nullptr;
 849   uint32_t num_bytes_writable = 0;
 850   MojoResult rv = mojo::BeginWriteDataRaw(body_stream_writer_.get(),
 851                                           reinterpret_cast<void**>(&buffer),
 852                                           &num_bytes_writable,
 853                                           MOJO_WRITE_DATA_FLAG_NONE);
 854   if (rv == MOJO_RESULT_SHOULD_WAIT) {
 855     body_stream_buffer_.insert(body_stream_buffer_.end(), data, data + size);
 856     body_stream_writer_watcher_.Start(
 857         body_stream_writer_.get(),
 858         MOJO_HANDLE_SIGNAL_WRITABLE,
 859         MOJO_DEADLINE_INDEFINITE,
 860         base::Bind(&WebURLLoaderImpl::Context::OnHandleGotWritable,
 861                    base::Unretained(this)));
 862     return MOJO_RESULT_OK;
 863   }
 864
 865   if (rv != MOJO_RESULT_OK)
 866     return rv;
 867
 868   uint32_t num_bytes_to_write = 0;
 869   if (num_bytes_writable < body_stream_buffer_.size()) {
 870     auto begin = body_stream_buffer_.begin();
 871     auto end = body_stream_buffer_.begin() + num_bytes_writable;
 872
 873     std::copy(begin, end, buffer);
 874     num_bytes_to_write = num_bytes_writable;
 875     body_stream_buffer_.erase(begin, end);
 876     body_stream_buffer_.insert(body_stream_buffer_.end(), data, data + size);
 877   } else {
 878     std::copy(body_stream_buffer_.begin(), body_stream_buffer_.end(), buffer);
 879     num_bytes_writable -= body_stream_buffer_.size();
 880     num_bytes_to_write += body_stream_buffer_.size();
 881     buffer += body_stream_buffer_.size();
 882     body_stream_buffer_.clear();
 883
 884     size_t num_newbytes_to_write =
 885         std::min(size, static_cast<size_t>(num_bytes_writable));
 886     std::copy(data, data + num_newbytes_to_write, buffer);
 887     num_bytes_to_write += num_newbytes_to_write;
 888     body_stream_buffer_.insert(body_stream_buffer_.end(),
 889                                data + num_newbytes_to_write,
 890                                data + size);
 891   }
 892
 893   rv = mojo::EndWriteDataRaw(body_stream_writer_.get(), num_bytes_to_write);
 894   if (rv == MOJO_RESULT_OK && !body_stream_buffer_.empty()) {
 895     body_stream_writer_watcher_.Start(
 896         body_stream_writer_.get(),
 897         MOJO_HANDLE_SIGNAL_WRITABLE,
 898         MOJO_DEADLINE_INDEFINITE,
 899         base::Bind(&WebURLLoaderImpl::Context::OnHandleGotWritable,
 900                    base::Unretained(this)));
 901   }
 902   return rv;
 903 }
 904
 905 void WebURLLoaderImpl::Context::OnHandleGotWritable(MojoResult result) {
 906   if (result != MOJO_RESULT_OK) {
 907     if (client_) {
 908       client_->didFail(
 909           loader_, CreateWebURLError(request_.url(), false, net::ERR_FAILED));
 910       // |this| can be deleted here.
 911     }
 912     return;
 913   }
 914
 915   if (body_stream_buffer_.empty())
 916     return;
 917
 918   MojoResult rv = WriteDataOnBodyStream(nullptr, 0);
 919   if (rv == MOJO_RESULT_OK) {
 920     if (got_all_stream_body_data_ && body_stream_buffer_.empty()) {
 921       // Close the handle to notify the end of data.
 922       body_stream_writer_.reset();
 923       if (client_) {
 924         // TODO(yhirano): Pass appropriate arguments.
 925         client_->didFinishLoading(loader_, 0, 0);
 926         // |this| can be deleted here.
 927       }
 928     }
 929   } else {
 930     if (client_) {
 931       client_->didFail(
 932           loader_, CreateWebURLError(request_.url(), false, net::ERR_FAILED));
 933       // |this| can be deleted here.
 934     }
 935   }
 936 }
 937
 938 // WebURLLoaderImpl -----------------------------------------------------------
 939
 940 WebURLLoaderImpl::WebURLLoaderImpl(
 941     ResourceDispatcher* resource_dispatcher,
 942     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
 943     : context_(new Context(this, resource_dispatcher, task_runner)) {
 944 }
 945
 946 WebURLLoaderImpl::~WebURLLoaderImpl() {
 947   cancel();
 948 }
 949
 950 void WebURLLoaderImpl::PopulateURLResponse(const GURL& url,
 951                                            const ResourceResponseInfo& info,
 952                                            WebURLResponse* response) {
 953   response->setURL(url);
 954   response->setResponseTime(info.response_time.ToInternalValue());
 955   response->setMIMEType(WebString::fromUTF8(info.mime_type));
 956   response->setTextEncodingName(WebString::fromUTF8(info.charset));
 957   response->setExpectedContentLength(info.content_length);
 958   response->setSecurityInfo(info.security_info);
 959   response->setAppCacheID(info.appcache_id);
 960   response->setAppCacheManifestURL(info.appcache_manifest_url);
 961   response->setWasCached(!info.load_timing.request_start_time.is_null() &&
 962       info.response_time < info.load_timing.request_start_time);
 963   response->setRemoteIPAddress(
 964       WebString::fromUTF8(info.socket_address.host()));
 965   response->setRemotePort(info.socket_address.port());
 966   response->setConnectionID(info.load_timing.socket_log_id);
 967   response->setConnectionReused(info.load_timing.socket_reused);
 968   response->setDownloadFilePath(info.download_file_path.AsUTF16Unsafe());
 969   response->setWasFetchedViaSPDY(info.was_fetched_via_spdy);
 970   response->setWasFetchedViaServiceWorker(info.was_fetched_via_service_worker);
 971   response->setWasFallbackRequiredByServiceWorker(
 972       info.was_fallback_required_by_service_worker);
 973   response->setServiceWorkerResponseType(info.response_type_via_service_worker);
 974   response->setOriginalURLViaServiceWorker(
 975       info.original_url_via_service_worker);
 976
 977   WebURLResponseExtraDataImpl* extra_data =
 978       new WebURLResponseExtraDataImpl(info.npn_negotiated_protocol);
 979   response->setExtraData(extra_data);
 980   extra_data->set_was_fetched_via_spdy(info.was_fetched_via_spdy);
 981   extra_data->set_was_npn_negotiated(info.was_npn_negotiated);
 982   extra_data->set_was_alternate_protocol_available(
 983       info.was_alternate_protocol_available);
 984   extra_data->set_connection_info(info.connection_info);
 985   extra_data->set_was_fetched_via_proxy(info.was_fetched_via_proxy);
 986   extra_data->set_proxy_server(info.proxy_server);
 987
 988   // If there's no received headers end time, don't set load timing.  This is
 989   // the case for non-HTTP requests, requests that don't go over the wire, and
 990   // certain error cases.
 991   if (!info.load_timing.receive_headers_end.is_null()) {
 992     WebURLLoadTiming timing;
 993     PopulateURLLoadTiming(info.load_timing, &timing);
 994     const TimeTicks kNullTicks;
 995     timing.setWorkerStart(
 996         (info.service_worker_start_time - kNullTicks).InSecondsF());
 997     timing.setWorkerReady(
 998         (info.service_worker_ready_time - kNullTicks).InSecondsF());
 999     response->setLoadTiming(timing);
1000   }
1001
1002   if (info.devtools_info.get()) {
1003     WebHTTPLoadInfo load_info;
1004
1005     load_info.setHTTPStatusCode(info.devtools_info->http_status_code);
1006     load_info.setHTTPStatusText(WebString::fromLatin1(
1007         info.devtools_info->http_status_text));
1008     load_info.setEncodedDataLength(info.encoded_data_length);
1009
1010     load_info.setRequestHeadersText(WebString::fromLatin1(
1011         info.devtools_info->request_headers_text));
1012     load_info.setResponseHeadersText(WebString::fromLatin1(
1013         info.devtools_info->response_headers_text));
1014     const HeadersVector& request_headers = info.devtools_info->request_headers;
1015     for (HeadersVector::const_iterator it = request_headers.begin();
1016          it != request_headers.end(); ++it) {
1017       load_info.addRequestHeader(WebString::fromLatin1(it->first),
1018           WebString::fromLatin1(it->second));
1019     }
1020     const HeadersVector& response_headers =
1021         info.devtools_info->response_headers;
1022     for (HeadersVector::const_iterator it = response_headers.begin();
1023          it != response_headers.end(); ++it) {
1024       load_info.addResponseHeader(WebString::fromLatin1(it->first),
1025           WebString::fromLatin1(it->second));
1026     }
1027     load_info.setNPNNegotiatedProtocol(WebString::fromLatin1(
1028         info.npn_negotiated_protocol));
1029     response->setHTTPLoadInfo(load_info);
1030   }
1031
1032   const net::HttpResponseHeaders* headers = info.headers.get();
1033   if (!headers)
1034     return;
1035
1036   WebURLResponse::HTTPVersion version = WebURLResponse::Unknown;
1037   if (headers->GetHttpVersion() == net::HttpVersion(0, 9))
1038     version = WebURLResponse::HTTP_0_9;
1039   else if (headers->GetHttpVersion() == net::HttpVersion(1, 0))
1040     version = WebURLResponse::HTTP_1_0;
1041   else if (headers->GetHttpVersion() == net::HttpVersion(1, 1))
1042     version = WebURLResponse::HTTP_1_1;
1043   response->setHTTPVersion(version);
1044   response->setHTTPStatusCode(headers->response_code());
1045   response->setHTTPStatusText(WebString::fromLatin1(headers->GetStatusText()));
1046
1047   // TODO(darin): We should leverage HttpResponseHeaders for this, and this
1048   // should be using the same code as ResourceDispatcherHost.
1049   // TODO(jungshik): Figure out the actual value of the referrer charset and
1050   // pass it to GetSuggestedFilename.
1051   std::string value;
1052   headers->EnumerateHeader(NULL, "content-disposition", &value);
1053   response->setSuggestedFileName(
1054       net::GetSuggestedFilename(url,
1055                                 value,
1056                                 std::string(),  // referrer_charset
1057                                 std::string(),  // suggested_name
1058                                 std::string(),  // mime_type
1059                                 std::string()));  // default_name
1060
1061   Time time_val;
1062   if (headers->GetLastModifiedValue(&time_val))
1063     response->setLastModifiedDate(time_val.ToDoubleT());
1064
1065   // Build up the header map.
1066   void* iter = NULL;
1067   std::string name;
1068   while (headers->EnumerateHeaderLines(&iter, &name, &value)) {
1069     response->addHTTPHeaderField(WebString::fromLatin1(name),
1070                                  WebString::fromLatin1(value));
1071   }
1072 }
1073
1074 void WebURLLoaderImpl::loadSynchronously(const WebURLRequest& request,
1075                                          WebURLResponse& response,
1076                                          WebURLError& error,
1077                                          WebData& data) {
1078   SyncLoadResponse sync_load_response;
1079   context_->Start(request, &sync_load_response);
1080
1081   const GURL& final_url = sync_load_response.url;
1082
1083   // TODO(tc): For file loads, we may want to include a more descriptive
1084   // status code or status text.
1085   int error_code = sync_load_response.error_code;
1086   if (error_code != net::OK) {
1087     response.setURL(final_url);
1088     error.domain = WebString::fromUTF8(net::kErrorDomain);
1089     error.reason = error_code;
1090     error.unreachableURL = final_url;
1091     return;
1092   }
1093
1094   PopulateURLResponse(final_url, sync_load_response, &response);
1095
1096   data.assign(sync_load_response.data.data(),
1097               sync_load_response.data.size());
1098 }
1099
1100 void WebURLLoaderImpl::loadAsynchronously(const WebURLRequest& request,
1101                                           WebURLLoaderClient* client) {
1102   DCHECK(!context_->client());
1103
1104   context_->set_client(client);
1105   context_->Start(request, NULL);
1106 }
1107
1108 void WebURLLoaderImpl::cancel() {
1109   context_->Cancel();
1110 }
1111
1112 void WebURLLoaderImpl::setDefersLoading(bool value) {
1113   context_->SetDefersLoading(value);
1114 }
1115
1116 void WebURLLoaderImpl::didChangePriority(WebURLRequest::Priority new_priority,
1117                                          int intra_priority_value) {
1118   context_->DidChangePriority(new_priority, intra_priority_value);
1119 }
1120
1121 bool WebURLLoaderImpl::attachThreadedDataReceiver(
1122     blink::WebThreadedDataReceiver* threaded_data_receiver) {
1123   return context_->AttachThreadedDataReceiver(threaded_data_receiver);
1124 }
1125
1126 }  // namespace content