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 FrameNavigationEntry& frame_entry,
  65     const NavigationEntryImpl& entry,
  66     FrameMsg_Navigate_Type::Value navigation_type,
  67     bool is_same_document_history_load,
  68     base::TimeTicks navigation_start,
  69     NavigationControllerImpl* controller) {
  70   std::string method = entry.GetHasPostData() ? "POST" : "GET";
  71
  72   // Copy existing headers and add necessary headers that may not be present
  73   // in the RequestNavigationParams.
  74   net::HttpRequestHeaders headers;
  75   headers.AddHeadersFromString(entry.extra_headers());
  76   headers.SetHeaderIfMissing(net::HttpRequestHeaders::kUserAgent,
  77                              GetContentClient()->GetUserAgent());
  78   // TODO(clamy): match what blink is doing with accept headers.
  79   headers.SetHeaderIfMissing("Accept", "*/*");
  80
  81   // Fill POST data from the browser in the request body.
  82   scoped_refptr<ResourceRequestBody> request_body;
  83   if (entry.GetHasPostData()) {
  84     request_body = new ResourceRequestBody();
  85     request_body->AppendBytes(
  86         reinterpret_cast<const char *>(
  87             entry.GetBrowserInitiatedPostData()->front()),
  88         entry.GetBrowserInitiatedPostData()->size());
  89   }
  90
  91   scoped_ptr<NavigationRequest> navigation_request(new NavigationRequest(
  92       frame_tree_node,
  93       entry.ConstructCommonNavigationParams(frame_entry, navigation_type),
  94       BeginNavigationParams(method, headers.ToString(),
  95                             LoadFlagFromNavigationType(navigation_type), false),
  96       entry.ConstructRequestNavigationParams(
  97           frame_entry, navigation_start, is_same_document_history_load,
  98           controller->HasCommittedRealLoad(frame_tree_node),
  99           controller->GetPendingEntryIndex() == -1,
 100           controller->GetIndexOfEntry(&entry),
 101           controller->GetLastCommittedEntryIndex(),
 102           controller->GetEntryCount()),
 103       request_body, true, &frame_entry, &entry));
 104   return navigation_request.Pass();
 105 }
 106
 107 // static
 108 scoped_ptr<NavigationRequest> NavigationRequest::CreateRendererInitiated(
 109     FrameTreeNode* frame_tree_node,
 110     const CommonNavigationParams& common_params,
 111     const BeginNavigationParams& begin_params,
 112     scoped_refptr<ResourceRequestBody> body,
 113     int current_history_list_offset,
 114     int current_history_list_length) {
 115   // TODO(clamy): Check if some PageState should be provided here.
 116   // TODO(clamy): See how we should handle override of the user agent when the
 117   // navigation may start in a renderer and commit in another one.
 118   // TODO(clamy): See if the navigation start time should be measured in the
 119   // renderer and sent to the browser instead of being measured here.
 120   // TODO(clamy): The pending history list offset should be properly set.
 121   // TODO(clamy): Set has_committed_real_load.
 122   RequestNavigationParams request_params;
 123   request_params.current_history_list_offset = current_history_list_offset;
 124   request_params.current_history_list_length = current_history_list_length;
 125   scoped_ptr<NavigationRequest> navigation_request(
 126       new NavigationRequest(frame_tree_node, common_params, begin_params,
 127                             request_params, body, false, nullptr, nullptr));
 128   return navigation_request.Pass();
 129 }
 130
 131 NavigationRequest::NavigationRequest(
 132     FrameTreeNode* frame_tree_node,
 133     const CommonNavigationParams& common_params,
 134     const BeginNavigationParams& begin_params,
 135     const RequestNavigationParams& request_params,
 136     scoped_refptr<ResourceRequestBody> body,
 137     bool browser_initiated,
 138     const FrameNavigationEntry* frame_entry,
 139     const NavigationEntryImpl* entry)
 140     : frame_tree_node_(frame_tree_node),
 141       common_params_(common_params),
 142       begin_params_(begin_params),
 143       request_params_(request_params),
 144       browser_initiated_(browser_initiated),
 145       state_(NOT_STARTED),
 146       restore_type_(NavigationEntryImpl::RESTORE_NONE),
 147       is_view_source_(false),
 148       bindings_(NavigationEntryImpl::kInvalidBindings) {
 149   DCHECK_IMPLIES(browser_initiated, entry != nullptr && frame_entry != nullptr);
 150   if (browser_initiated) {
 151     // TODO(clamy): use the FrameNavigationEntry for the source SiteInstance
 152     // once it has been moved from the NavigationEntry.
 153     source_site_instance_ = entry->source_site_instance();
 154     dest_site_instance_ = frame_entry->site_instance();
 155     restore_type_ = entry->restore_type();
 156     is_view_source_ = entry->IsViewSourceMode();
 157     bindings_ = entry->bindings();
 158   } else {
 159     // This is needed to have about:blank and data URLs commit in the same
 160     // SiteInstance as the initiating renderer.
 161     source_site_instance_ =
 162         frame_tree_node->current_frame_host()->GetSiteInstance();
 163   }
 164
 165   const GURL& first_party_for_cookies =
 166       frame_tree_node->IsMainFrame()
 167           ? common_params.url
 168           : frame_tree_node->frame_tree()->root()->current_url();
 169   bool parent_is_main_frame = !frame_tree_node->parent() ?
 170       false : frame_tree_node->parent()->IsMainFrame();
 171   info_.reset(new NavigationRequestInfo(
 172       common_params, begin_params, first_party_for_cookies,
 173       frame_tree_node->IsMainFrame(), parent_is_main_frame,
 174       frame_tree_node->frame_tree_node_id(), body));
 175 }
 176
 177 NavigationRequest::~NavigationRequest() {
 178 }
 179
 180 bool NavigationRequest::BeginNavigation() {
 181   DCHECK(!loader_);
 182   DCHECK(state_ == NOT_STARTED || state_ == WAITING_FOR_RENDERER_RESPONSE);
 183   state_ = STARTED;
 184
 185   if (ShouldMakeNetworkRequest(common_params_.url)) {
 186     loader_ = NavigationURLLoader::Create(
 187         frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
 188         frame_tree_node_->frame_tree_node_id(), info_.Pass(), this);
 189     return true;
 190   }
 191
 192   // There is no need to make a network request for this navigation, so commit
 193   // it immediately.
 194   state_ = RESPONSE_STARTED;
 195   frame_tree_node_->navigator()->CommitNavigation(
 196       frame_tree_node_, nullptr, scoped_ptr<StreamHandle>());
 197   return false;
 198
 199   // TODO(davidben): Fire (and add as necessary) observer methods such as
 200   // DidStartProvisionalLoadForFrame for the navigation.
 201 }
 202
 203 void NavigationRequest::OnRequestRedirected(
 204     const net::RedirectInfo& redirect_info,
 205     const scoped_refptr<ResourceResponse>& response) {
 206   // TODO(davidben): Track other changes from redirects. These are important
 207   // for, e.g., reloads.
 208   common_params_.url = redirect_info.new_url;
 209
 210   // TODO(davidben): This where prerender and navigation_interceptor should be
 211   // integrated. For now, just always follow all redirects.
 212   loader_->FollowRedirect();
 213 }
 214
 215 void NavigationRequest::OnResponseStarted(
 216     const scoped_refptr<ResourceResponse>& response,
 217     scoped_ptr<StreamHandle> body) {
 218   DCHECK(state_ == STARTED);
 219   state_ = RESPONSE_STARTED;
 220   frame_tree_node_->navigator()->CommitNavigation(frame_tree_node_,
 221                                                   response.get(), body.Pass());
 222 }
 223
 224 void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,
 225                                         int net_error) {
 226   DCHECK(state_ == STARTED);
 227   state_ = FAILED;
 228   frame_tree_node_->navigator()->FailedNavigation(
 229       frame_tree_node_, has_stale_copy_in_cache, net_error);
 230 }
 231
 232 void NavigationRequest::OnRequestStarted(base::TimeTicks timestamp) {
 233   frame_tree_node_->navigator()->LogResourceRequestTime(timestamp,
 234                                                         common_params_.url);
 235 }
 236
 237 }  // namespace content