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 bool NavigationRequest::ShouldMakeNetworkRequest(const GURL& url) {
  55   // Data and Javascript urls should not make network requests.
  56   // TODO(clamy): same document navigations should not make network requests.
  57   return !url.SchemeIs(url::kDataScheme) && url != GURL(url::kAboutBlankURL) &&
  58          !url.SchemeIs(url::kJavaScriptScheme);
  59 }
  60
  61 // static
  62 scoped_ptr<NavigationRequest> NavigationRequest::CreateBrowserInitiated(
  63     FrameTreeNode* frame_tree_node,
  64     const NavigationEntryImpl& entry,
  65     FrameMsg_Navigate_Type::Value navigation_type,
  66     base::TimeTicks navigation_start,
  67     NavigationControllerImpl* controller) {
  68   std::string method = entry.GetHasPostData() ? "POST" : "GET";
  69
  70   // Copy existing headers and add necessary headers that may not be present
  71   // in the RequestNavigationParams.
  72   net::HttpRequestHeaders headers;
  73   headers.AddHeadersFromString(entry.extra_headers());
  74   headers.SetHeaderIfMissing(net::HttpRequestHeaders::kUserAgent,
  75                              GetContentClient()->GetUserAgent());
  76   // TODO(clamy): match what blink is doing with accept headers.
  77   headers.SetHeaderIfMissing("Accept", "*/*");
  78
  79   // Fill POST data from the browser in the request body.
  80   scoped_refptr<ResourceRequestBody> request_body;
  81   if (entry.GetHasPostData()) {
  82     request_body = new ResourceRequestBody();
  83     request_body->AppendBytes(
  84         reinterpret_cast<const char *>(
  85             entry.GetBrowserInitiatedPostData()->front()),
  86         entry.GetBrowserInitiatedPostData()->size());
  87   }
  88
  89   scoped_ptr<NavigationRequest> navigation_request(new NavigationRequest(
  90       frame_tree_node, entry.ConstructCommonNavigationParams(navigation_type),
  91       BeginNavigationParams(method, headers.ToString(),
  92                             LoadFlagFromNavigationType(navigation_type), false),
  93       entry.ConstructRequestNavigationParams(
  94           navigation_start, controller->HasCommittedRealLoad(frame_tree_node),
  95           controller->GetPendingEntryIndex() == -1,
  96           controller->GetIndexOfEntry(&entry),
  97           controller->GetLastCommittedEntryIndex(),
  98           controller->GetEntryCount()),
  99       request_body, true, &entry));
 100   return navigation_request.Pass();
 101 }
 102
 103 // static
 104 scoped_ptr<NavigationRequest> NavigationRequest::CreateRendererInitiated(
 105     FrameTreeNode* frame_tree_node,
 106     const CommonNavigationParams& common_params,
 107     const BeginNavigationParams& begin_params,
 108     scoped_refptr<ResourceRequestBody> body,
 109     int current_history_list_offset,
 110     int current_history_list_length) {
 111   // TODO(clamy): Check if some PageState should be provided here.
 112   // TODO(clamy): See how we should handle override of the user agent when the
 113   // navigation may start in a renderer and commit in another one.
 114   // TODO(clamy): See if the navigation start time should be measured in the
 115   // renderer and sent to the browser instead of being measured here.
 116   // TODO(clamy): The pending history list offset should be properly set.
 117   // TODO(clamy): Set has_committed_real_load.
 118   RequestNavigationParams request_params;
 119   request_params.current_history_list_offset = current_history_list_offset;
 120   request_params.current_history_list_length = current_history_list_length;
 121   scoped_ptr<NavigationRequest> navigation_request(
 122       new NavigationRequest(frame_tree_node, common_params, begin_params,
 123                             request_params, body, false, nullptr));
 124   return navigation_request.Pass();
 125 }
 126
 127 NavigationRequest::NavigationRequest(
 128     FrameTreeNode* frame_tree_node,
 129     const CommonNavigationParams& common_params,
 130     const BeginNavigationParams& begin_params,
 131     const RequestNavigationParams& request_params,
 132     scoped_refptr<ResourceRequestBody> body,
 133     bool browser_initiated,
 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   if (entry) {
 145     source_site_instance_ = entry->source_site_instance();
 146     dest_site_instance_ = entry->site_instance();
 147     restore_type_ = entry->restore_type();
 148     is_view_source_ = entry->IsViewSourceMode();
 149     bindings_ = entry->bindings();
 150   } else {
 151     // This is needed to have about:blank and data URLs commit in the same
 152     // SiteInstance as the initiating renderer.
 153     source_site_instance_ =
 154         frame_tree_node->current_frame_host()->GetSiteInstance();
 155   }
 156
 157   const GURL& first_party_for_cookies =
 158       frame_tree_node->IsMainFrame()
 159           ? common_params.url
 160           : frame_tree_node->frame_tree()->root()->current_url();
 161   bool parent_is_main_frame = !frame_tree_node->parent() ?
 162       false : frame_tree_node->parent()->IsMainFrame();
 163   info_.reset(new NavigationRequestInfo(
 164       common_params, begin_params, first_party_for_cookies,
 165       frame_tree_node->IsMainFrame(), parent_is_main_frame,
 166       frame_tree_node->frame_tree_node_id(), body));
 167 }
 168
 169 NavigationRequest::~NavigationRequest() {
 170 }
 171
 172 bool NavigationRequest::BeginNavigation() {
 173   DCHECK(!loader_);
 174   DCHECK(state_ == NOT_STARTED || state_ == WAITING_FOR_RENDERER_RESPONSE);
 175   state_ = STARTED;
 176
 177   if (ShouldMakeNetworkRequest(common_params_.url)) {
 178     loader_ = NavigationURLLoader::Create(
 179         frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
 180         frame_tree_node_->frame_tree_node_id(), info_.Pass(), this);
 181     return true;
 182   }
 183
 184   // There is no need to make a network request for this navigation, so commit
 185   // it immediately.
 186   state_ = RESPONSE_STARTED;
 187   frame_tree_node_->navigator()->CommitNavigation(
 188       frame_tree_node_, nullptr, scoped_ptr<StreamHandle>());
 189   return false;
 190
 191   // TODO(davidben): Fire (and add as necessary) observer methods such as
 192   // DidStartProvisionalLoadForFrame for the navigation.
 193 }
 194
 195 void NavigationRequest::OnRequestRedirected(
 196     const net::RedirectInfo& redirect_info,
 197     const scoped_refptr<ResourceResponse>& response) {
 198   // TODO(davidben): Track other changes from redirects. These are important
 199   // for, e.g., reloads.
 200   common_params_.url = redirect_info.new_url;
 201
 202   // TODO(davidben): This where prerender and navigation_interceptor should be
 203   // integrated. For now, just always follow all redirects.
 204   loader_->FollowRedirect();
 205 }
 206
 207 void NavigationRequest::OnResponseStarted(
 208     const scoped_refptr<ResourceResponse>& response,
 209     scoped_ptr<StreamHandle> body) {
 210   DCHECK(state_ == STARTED);
 211   state_ = RESPONSE_STARTED;
 212   frame_tree_node_->navigator()->CommitNavigation(frame_tree_node_,
 213                                                   response.get(), body.Pass());
 214 }
 215
 216 void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,
 217                                         int net_error) {
 218   DCHECK(state_ == STARTED);
 219   state_ = FAILED;
 220   frame_tree_node_->navigator()->FailedNavigation(
 221       frame_tree_node_, has_stale_copy_in_cache, net_error);
 222 }
 223
 224 void NavigationRequest::OnRequestStarted(base::TimeTicks timestamp) {
 225   frame_tree_node_->navigator()->LogResourceRequestTime(timestamp,
 226                                                         common_params_.url);
 227 }
 228
 229 }  // namespace content