content/browser/frame_host/navigation_request.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/browser/frame_host/navigation_request.h"
   6
   7 #include "content/browser/frame_host/frame_tree.h"
   8 #include "content/browser/frame_host/frame_tree_node.h"
   9 #include "content/browser/frame_host/navigation_controller_impl.h"
  10 #include "content/browser/frame_host/navigation_request_info.h"
  11 #include "content/browser/frame_host/navigator.h"
  12 #include "content/browser/loader/navigation_url_loader.h"
  13 #include "content/browser/site_instance_impl.h"
  14 #include "content/common/resource_request_body.h"
  15 #include "content/public/browser/navigation_controller.h"
  16 #include "content/public/browser/stream_handle.h"
  17 #include "content/public/common/content_client.h"
  18 #include "net/base/load_flags.h"
  19 #include "net/http/http_request_headers.h"
  20 #include "net/url_request/redirect_info.h"
  21
  22 namespace content {
  23
  24 namespace {
  25
  26 // Returns the net load flags to use based on the navigation type.
  27 // TODO(clamy): unify the code with what is happening on the renderer side.
  28 int LoadFlagFromNavigationType(FrameMsg_Navigate_Type::Value navigation_type) {
  29   int load_flags = net::LOAD_NORMAL;
  30   switch (navigation_type) {
  31     case FrameMsg_Navigate_Type::RELOAD:
  32     case FrameMsg_Navigate_Type::RELOAD_ORIGINAL_REQUEST_URL:
  33       load_flags |= net::LOAD_VALIDATE_CACHE;
  34       break;
  35     case FrameMsg_Navigate_Type::RELOAD_IGNORING_CACHE:
  36       load_flags |= net::LOAD_BYPASS_CACHE;
  37       break;
  38     case FrameMsg_Navigate_Type::RESTORE:
  39       load_flags |= net::LOAD_PREFERRING_CACHE;
  40       break;
  41     case FrameMsg_Navigate_Type::RESTORE_WITH_POST:
  42       load_flags |= net::LOAD_ONLY_FROM_CACHE;
  43       break;
  44     case FrameMsg_Navigate_Type::NORMAL:
  45     default:
  46       break;
  47   }
  48   return load_flags;
  49 }
  50
  51 }  // namespace
  52
  53 // static
  54 scoped_ptr<NavigationRequest> NavigationRequest::CreateBrowserInitiated(
  55     FrameTreeNode* frame_tree_node,
  56     const GURL& dest_url,
  57     const Referrer& dest_referrer,
  58     const FrameNavigationEntry& frame_entry,
  59     const NavigationEntryImpl& entry,
  60     FrameMsg_Navigate_Type::Value navigation_type,
  61     bool is_same_document_history_load,
  62     base::TimeTicks navigation_start,
  63     NavigationControllerImpl* controller) {
  64   std::string method = entry.GetHasPostData() ? "POST" : "GET";
  65
  66   // Copy existing headers and add necessary headers that may not be present
  67   // in the RequestNavigationParams.
  68   net::HttpRequestHeaders headers;
  69   headers.AddHeadersFromString(entry.extra_headers());
  70   headers.SetHeaderIfMissing(net::HttpRequestHeaders::kUserAgent,
  71                              GetContentClient()->GetUserAgent());
  72   // TODO(clamy): match what blink is doing with accept headers.
  73   headers.SetHeaderIfMissing("Accept", "*/*");
  74
  75   // Fill POST data from the browser in the request body.
  76   scoped_refptr<ResourceRequestBody> request_body;
  77   if (entry.GetHasPostData()) {
  78     request_body = new ResourceRequestBody();
  79     request_body->AppendBytes(
  80         reinterpret_cast<const char *>(
  81             entry.GetBrowserInitiatedPostData()->front()),
  82         entry.GetBrowserInitiatedPostData()->size());
  83   }
  84
  85   scoped_ptr<NavigationRequest> navigation_request(new NavigationRequest(
  86       frame_tree_node,
  87       entry.ConstructCommonNavigationParams(dest_url, dest_referrer,
  88                                             frame_entry, navigation_type),
  89       BeginNavigationParams(method, headers.ToString(),
  90                             LoadFlagFromNavigationType(navigation_type), false),
  91       entry.ConstructRequestNavigationParams(
  92           frame_entry, navigation_start, is_same_document_history_load,
  93           frame_tree_node->has_committed_real_load(),
  94           controller->GetPendingEntryIndex() == -1,
  95           controller->GetIndexOfEntry(&entry),
  96           controller->GetLastCommittedEntryIndex(),
  97           controller->GetEntryCount()),
  98       request_body, true, &frame_entry, &entry));
  99   return navigation_request.Pass();
 100 }
 101
 102 // static
 103 scoped_ptr<NavigationRequest> NavigationRequest::CreateRendererInitiated(
 104     FrameTreeNode* frame_tree_node,
 105     const CommonNavigationParams& common_params,
 106     const BeginNavigationParams& begin_params,
 107     scoped_refptr<ResourceRequestBody> body,
 108     int current_history_list_offset,
 109     int current_history_list_length) {
 110   // TODO(clamy): Check if some PageState should be provided here.
 111   // TODO(clamy): See how we should handle override of the user agent when the
 112   // navigation may start in a renderer and commit in another one.
 113   // TODO(clamy): See if the navigation start time should be measured in the
 114   // renderer and sent to the browser instead of being measured here.
 115   // TODO(clamy): The pending history list offset should be properly set.
 116   // TODO(clamy): Set has_committed_real_load.
 117   RequestNavigationParams request_params;
 118   request_params.current_history_list_offset = current_history_list_offset;
 119   request_params.current_history_list_length = current_history_list_length;
 120   scoped_ptr<NavigationRequest> navigation_request(
 121       new NavigationRequest(frame_tree_node, common_params, begin_params,
 122                             request_params, body, false, nullptr, nullptr));
 123   return navigation_request.Pass();
 124 }
 125
 126 NavigationRequest::NavigationRequest(
 127     FrameTreeNode* frame_tree_node,
 128     const CommonNavigationParams& common_params,
 129     const BeginNavigationParams& begin_params,
 130     const RequestNavigationParams& request_params,
 131     scoped_refptr<ResourceRequestBody> body,
 132     bool browser_initiated,
 133     const FrameNavigationEntry* frame_entry,
 134     const NavigationEntryImpl* entry)
 135     : frame_tree_node_(frame_tree_node),
 136       common_params_(common_params),
 137       begin_params_(begin_params),
 138       request_params_(request_params),
 139       browser_initiated_(browser_initiated),
 140       state_(NOT_STARTED),
 141       restore_type_(NavigationEntryImpl::RESTORE_NONE),
 142       is_view_source_(false),
 143       bindings_(NavigationEntryImpl::kInvalidBindings) {
 144   DCHECK_IMPLIES(browser_initiated, entry != nullptr && frame_entry != nullptr);
 145   if (browser_initiated) {
 146     // TODO(clamy): use the FrameNavigationEntry for the source SiteInstance
 147     // once it has been moved from the NavigationEntry.
 148     source_site_instance_ = entry->source_site_instance();
 149     dest_site_instance_ = frame_entry->site_instance();
 150     restore_type_ = entry->restore_type();
 151     is_view_source_ = entry->IsViewSourceMode();
 152     bindings_ = entry->bindings();
 153   } else {
 154     // This is needed to have about:blank and data URLs commit in the same
 155     // SiteInstance as the initiating renderer.
 156     source_site_instance_ =
 157         frame_tree_node->current_frame_host()->GetSiteInstance();
 158   }
 159
 160   const GURL& first_party_for_cookies =
 161       frame_tree_node->IsMainFrame()
 162           ? common_params.url
 163           : frame_tree_node->frame_tree()->root()->current_url();
 164   bool parent_is_main_frame = !frame_tree_node->parent() ?
 165       false : frame_tree_node->parent()->IsMainFrame();
 166   info_.reset(new NavigationRequestInfo(
 167       common_params, begin_params, first_party_for_cookies,
 168       frame_tree_node->IsMainFrame(), parent_is_main_frame,
 169       frame_tree_node->frame_tree_node_id(), body));
 170 }
 171
 172 NavigationRequest::~NavigationRequest() {
 173 }
 174
 175 bool NavigationRequest::BeginNavigation() {
 176   DCHECK(!loader_);
 177   DCHECK(state_ == NOT_STARTED || state_ == WAITING_FOR_RENDERER_RESPONSE);
 178   state_ = STARTED;
 179
 180   if (ShouldMakeNetworkRequestForURL(common_params_.url)) {
 181     loader_ = NavigationURLLoader::Create(
 182         frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
 183         frame_tree_node_->frame_tree_node_id(), info_.Pass(), this);
 184     return true;
 185   }
 186
 187   // There is no need to make a network request for this navigation, so commit
 188   // it immediately.
 189   state_ = RESPONSE_STARTED;
 190   frame_tree_node_->navigator()->CommitNavigation(
 191       frame_tree_node_, nullptr, scoped_ptr<StreamHandle>());
 192   return false;
 193
 194   // TODO(davidben): Fire (and add as necessary) observer methods such as
 195   // DidStartProvisionalLoadForFrame for the navigation.
 196 }
 197
 198 void NavigationRequest::OnRequestRedirected(
 199     const net::RedirectInfo& redirect_info,
 200     const scoped_refptr<ResourceResponse>& response) {
 201   // TODO(davidben): Track other changes from redirects. These are important
 202   // for, e.g., reloads.
 203   common_params_.url = redirect_info.new_url;
 204
 205   // TODO(davidben): This where prerender and navigation_interceptor should be
 206   // integrated. For now, just always follow all redirects.
 207   loader_->FollowRedirect();
 208 }
 209
 210 void NavigationRequest::OnResponseStarted(
 211     const scoped_refptr<ResourceResponse>& response,
 212     scoped_ptr<StreamHandle> body) {
 213   DCHECK(state_ == STARTED);
 214   state_ = RESPONSE_STARTED;
 215   frame_tree_node_->navigator()->CommitNavigation(frame_tree_node_,
 216                                                   response.get(), body.Pass());
 217 }
 218
 219 void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,
 220                                         int net_error) {
 221   DCHECK(state_ == STARTED);
 222   state_ = FAILED;
 223   frame_tree_node_->navigator()->FailedNavigation(
 224       frame_tree_node_, has_stale_copy_in_cache, net_error);
 225 }
 226
 227 void NavigationRequest::OnRequestStarted(base::TimeTicks timestamp) {
 228   frame_tree_node_->navigator()->LogResourceRequestTime(timestamp,
 229                                                         common_params_.url);
 230 }
 231
 232 }  // namespace content