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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/frame_host/navigation_request.h"
#include "content/browser/frame_host/frame_tree.h"
#include "content/browser/frame_host/frame_tree_node.h"
#include "content/browser/frame_host/navigation_controller_impl.h"
#include "content/browser/frame_host/navigation_request_info.h"
#include "content/browser/frame_host/navigator.h"
#include "content/browser/loader/navigation_url_loader.h"
#include "content/browser/site_instance_impl.h"
#include "content/common/resource_request_body.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/stream_handle.h"
#include "content/public/common/content_client.h"
#include "net/base/load_flags.h"
#include "net/http/http_request_headers.h"
#include "net/url_request/redirect_info.h"
namespace content {
namespace {
// Returns the net load flags to use based on the navigation type.
// TODO(clamy): unify the code with what is happening on the renderer side.
int LoadFlagFromNavigationType(FrameMsg_Navigate_Type::Value navigation_type) {
int load_flags = net::LOAD_NORMAL;
switch (navigation_type) {
case FrameMsg_Navigate_Type::RELOAD:
case FrameMsg_Navigate_Type::RELOAD_ORIGINAL_REQUEST_URL:
load_flags |= net::LOAD_VALIDATE_CACHE;
break;
case FrameMsg_Navigate_Type::RELOAD_IGNORING_CACHE:
load_flags |= net::LOAD_BYPASS_CACHE;
break;
case FrameMsg_Navigate_Type::RESTORE:
load_flags |= net::LOAD_PREFERRING_CACHE;
break;
case FrameMsg_Navigate_Type::RESTORE_WITH_POST:
load_flags |= net::LOAD_ONLY_FROM_CACHE;
break;
case FrameMsg_Navigate_Type::NORMAL:
default:
break;
}
return load_flags;
}
} // namespace
// static
bool NavigationRequest::ShouldMakeNetworkRequest(const GURL& url) {
// Data urls should not make network requests.
// TODO(clamy): same document navigations should not make network requests.
return !url.SchemeIs(url::kDataScheme);
}
// static
scoped_ptr<NavigationRequest> NavigationRequest::CreateBrowserInitiated(
FrameTreeNode* frame_tree_node,
const NavigationEntryImpl& entry,
FrameMsg_Navigate_Type::Value navigation_type,
base::TimeTicks navigation_start,
NavigationControllerImpl* controller) {
std::string method = entry.GetHasPostData() ? "POST" : "GET";
// Copy existing headers and add necessary headers that may not be present
// in the RequestNavigationParams.
net::HttpRequestHeaders headers;
headers.AddHeadersFromString(entry.extra_headers());
headers.SetHeaderIfMissing(net::HttpRequestHeaders::kUserAgent,
GetContentClient()->GetUserAgent());
// TODO(clamy): match what blink is doing with accept headers.
headers.SetHeaderIfMissing("Accept", "*/*");
// Fill POST data from the browser in the request body.
scoped_refptr<ResourceRequestBody> request_body;
if (entry.GetHasPostData()) {
request_body = new ResourceRequestBody();
request_body->AppendBytes(
reinterpret_cast<const char *>(
entry.GetBrowserInitiatedPostData()->front()),
entry.GetBrowserInitiatedPostData()->size());
}
scoped_ptr<NavigationRequest> navigation_request(new NavigationRequest(
frame_tree_node, entry.ConstructCommonNavigationParams(navigation_type),
BeginNavigationParams(method, headers.ToString(),
LoadFlagFromNavigationType(navigation_type), false),
entry.ConstructRequestNavigationParams(
navigation_start,
controller->GetPendingEntryIndex() == -1,
controller->GetIndexOfEntry(&entry),
controller->GetLastCommittedEntryIndex(),
controller->GetEntryCount()),
request_body, true, &entry));
return navigation_request.Pass();
}
// static
scoped_ptr<NavigationRequest> NavigationRequest::CreateRendererInitiated(
FrameTreeNode* frame_tree_node,
const CommonNavigationParams& common_params,
const BeginNavigationParams& begin_params,
scoped_refptr<ResourceRequestBody> body,
int current_history_list_offset,
int current_history_list_length) {
// TODO(clamy): Check if some PageState should be provided here.
// TODO(clamy): See how we should handle override of the user agent when the
// navigation may start in a renderer and commit in another one.
// TODO(clamy): See if the navigation start time should be measured in the
// renderer and sent to the browser instead of being measured here.
// TODO(clamy): The pending history list offset should be properly set.
RequestNavigationParams request_params;
request_params.current_history_list_offset = current_history_list_offset;
request_params.current_history_list_length = current_history_list_length;
scoped_ptr<NavigationRequest> navigation_request(
new NavigationRequest(frame_tree_node, common_params, begin_params,
request_params, body, false, nullptr));
return navigation_request.Pass();
}
NavigationRequest::NavigationRequest(
FrameTreeNode* frame_tree_node,
const CommonNavigationParams& common_params,
const BeginNavigationParams& begin_params,
const RequestNavigationParams& request_params,
scoped_refptr<ResourceRequestBody> body,
bool browser_initiated,
const NavigationEntryImpl* entry)
: frame_tree_node_(frame_tree_node),
common_params_(common_params),
begin_params_(begin_params),
request_params_(request_params),
browser_initiated_(browser_initiated),
state_(NOT_STARTED),
restore_type_(NavigationEntryImpl::RESTORE_NONE),
is_view_source_(false),
bindings_(NavigationEntryImpl::kInvalidBindings) {
if (entry) {
source_site_instance_ = entry->source_site_instance();
dest_site_instance_ = entry->site_instance();
restore_type_ = entry->restore_type();
is_view_source_ = entry->IsViewSourceMode();
bindings_ = entry->bindings();
}
const GURL& first_party_for_cookies =
frame_tree_node->IsMainFrame()
? common_params.url
: frame_tree_node->frame_tree()->root()->current_url();
bool parent_is_main_frame = !frame_tree_node->parent() ?
false : frame_tree_node->parent()->IsMainFrame();
info_.reset(new NavigationRequestInfo(
common_params, begin_params, first_party_for_cookies,
frame_tree_node->IsMainFrame(), parent_is_main_frame, body));
}
NavigationRequest::~NavigationRequest() {
}
bool NavigationRequest::BeginNavigation() {
DCHECK(!loader_);
DCHECK(state_ == NOT_STARTED || state_ == WAITING_FOR_RENDERER_RESPONSE);
state_ = STARTED;
if (ShouldMakeNetworkRequest(common_params_.url)) {
loader_ = NavigationURLLoader::Create(
frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
frame_tree_node_->frame_tree_node_id(), info_.Pass(), this);
return true;
}
// There is no need to make a network request for this navigation, so commit
// it immediately.
state_ = RESPONSE_STARTED;
frame_tree_node_->navigator()->CommitNavigation(
frame_tree_node_, nullptr, scoped_ptr<StreamHandle>());
return false;
// TODO(davidben): Fire (and add as necessary) observer methods such as
// DidStartProvisionalLoadForFrame for the navigation.
}
void NavigationRequest::OnRequestRedirected(
const net::RedirectInfo& redirect_info,
const scoped_refptr<ResourceResponse>& response) {
// TODO(davidben): Track other changes from redirects. These are important
// for, e.g., reloads.
common_params_.url = redirect_info.new_url;
// TODO(davidben): This where prerender and navigation_interceptor should be
// integrated. For now, just always follow all redirects.
loader_->FollowRedirect();
}
void NavigationRequest::OnResponseStarted(
const scoped_refptr<ResourceResponse>& response,
scoped_ptr<StreamHandle> body) {
DCHECK(state_ == STARTED);
state_ = RESPONSE_STARTED;
frame_tree_node_->navigator()->CommitNavigation(frame_tree_node_,
response.get(), body.Pass());
}
void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,
int net_error) {
DCHECK(state_ == STARTED);
state_ = FAILED;
frame_tree_node_->navigator()->FailedNavigation(
frame_tree_node_, has_stale_copy_in_cache, net_error);
}
void NavigationRequest::OnRequestStarted(base::TimeTicks timestamp) {
frame_tree_node_->navigator()->LogResourceRequestTime(timestamp,
common_params_.url);
}
} // namespace content
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