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