blob: 5dad578ed1f3960ac519198874475e77d39fdaca [file] [log] [blame]
// Copyright 2013 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/navigator_impl.h"
#include <utility>
#include "base/metrics/histogram.h"
#include "base/time/time.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_entry_impl.h"
#include "content/browser/frame_host/navigation_handle_impl.h"
#include "content/browser/frame_host/navigation_request.h"
#include "content/browser/frame_host/navigation_request_info.h"
#include "content/browser/frame_host/navigator_delegate.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/site_instance_impl.h"
#include "content/browser/webui/web_ui_controller_factory_registry.h"
#include "content/browser/webui/web_ui_impl.h"
#include "content/common/frame_messages.h"
#include "content/common/navigation_params.h"
#include "content/common/site_isolation_policy.h"
#include "content/common/view_messages.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/global_request_id.h"
#include "content/public/browser/invalidate_type.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/page_navigator.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/stream_handle.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/common/bindings_policy.h"
#include "content/public/common/browser_side_navigation_policy.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/resource_response.h"
#include "content/public/common/url_constants.h"
#include "net/base/net_errors.h"
namespace content {
namespace {
FrameMsg_Navigate_Type::Value GetNavigationType(
BrowserContext* browser_context, const NavigationEntryImpl& entry,
NavigationController::ReloadType reload_type) {
switch (reload_type) {
case NavigationControllerImpl::RELOAD:
return FrameMsg_Navigate_Type::RELOAD;
case NavigationControllerImpl::RELOAD_IGNORING_CACHE:
case NavigationControllerImpl::RELOAD_DISABLE_LOFI_MODE:
return FrameMsg_Navigate_Type::RELOAD_IGNORING_CACHE;
case NavigationControllerImpl::RELOAD_ORIGINAL_REQUEST_URL:
return FrameMsg_Navigate_Type::RELOAD_ORIGINAL_REQUEST_URL;
case NavigationControllerImpl::NO_RELOAD:
break; // Fall through to rest of function.
}
// |RenderViewImpl::PopulateStateFromPendingNavigationParams| differentiates
// between |RESTORE_WITH_POST| and |RESTORE|.
if (entry.restore_type() ==
NavigationEntryImpl::RESTORE_LAST_SESSION_EXITED_CLEANLY) {
if (entry.GetHasPostData())
return FrameMsg_Navigate_Type::RESTORE_WITH_POST;
return FrameMsg_Navigate_Type::RESTORE;
}
return FrameMsg_Navigate_Type::NORMAL;
}
} // namespace
struct NavigatorImpl::NavigationMetricsData {
NavigationMetricsData(base::TimeTicks start_time,
GURL url,
NavigationEntryImpl::RestoreType restore_type)
: start_time_(start_time), url_(url) {
is_restoring_from_last_session_ =
(restore_type ==
NavigationEntryImpl::RESTORE_LAST_SESSION_EXITED_CLEANLY ||
restore_type == NavigationEntryImpl::RESTORE_LAST_SESSION_CRASHED);
}
base::TimeTicks start_time_;
GURL url_;
bool is_restoring_from_last_session_;
base::TimeTicks url_job_start_time_;
base::TimeDelta before_unload_delay_;
};
NavigatorImpl::NavigatorImpl(
NavigationControllerImpl* navigation_controller,
NavigatorDelegate* delegate)
: controller_(navigation_controller),
delegate_(delegate) {
}
NavigatorImpl::~NavigatorImpl() {}
NavigatorDelegate* NavigatorImpl::GetDelegate() {
return delegate_;
}
NavigationController* NavigatorImpl::GetController() {
return controller_;
}
void NavigatorImpl::DidStartProvisionalLoad(
RenderFrameHostImpl* render_frame_host,
const GURL& url,
const base::TimeTicks& navigation_start) {
bool is_main_frame = render_frame_host->frame_tree_node()->IsMainFrame();
bool is_error_page = (url.spec() == kUnreachableWebDataURL);
bool is_iframe_srcdoc = (url.spec() == kAboutSrcDocURL);
GURL validated_url(url);
RenderProcessHost* render_process_host = render_frame_host->GetProcess();
render_process_host->FilterURL(false, &validated_url);
if (is_main_frame && !is_error_page) {
DidStartMainFrameNavigation(validated_url,
render_frame_host->GetSiteInstance());
}
if (delegate_) {
// Notify the observer about the start of the provisional load.
delegate_->DidStartProvisionalLoad(render_frame_host, validated_url,
is_error_page, is_iframe_srcdoc);
}
if (is_error_page || IsBrowserSideNavigationEnabled())
return;
if (render_frame_host->navigation_handle()) {
if (render_frame_host->navigation_handle()->is_transferring()) {
// If the navigation is completing a transfer, this
// DidStartProvisionalLoad should not correspond to a new navigation.
DCHECK_EQ(url, render_frame_host->navigation_handle()->GetURL());
render_frame_host->navigation_handle()->set_is_transferring(false);
return;
}
// This ensures that notifications about the end of the previous
// navigation are sent before notifications about the start of the
// new navigation.
render_frame_host->SetNavigationHandle(scoped_ptr<NavigationHandleImpl>());
}
render_frame_host->SetNavigationHandle(NavigationHandleImpl::Create(
validated_url, render_frame_host->frame_tree_node(),
false, // is_synchronous
is_iframe_srcdoc, // is_srcdoc
navigation_start));
}
void NavigatorImpl::DidFailProvisionalLoadWithError(
RenderFrameHostImpl* render_frame_host,
const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
VLOG(1) << "Failed Provisional Load: " << params.url.possibly_invalid_spec()
<< ", error_code: " << params.error_code
<< ", error_description: " << params.error_description
<< ", showing_repost_interstitial: " <<
params.showing_repost_interstitial
<< ", frame_id: " << render_frame_host->GetRoutingID();
GURL validated_url(params.url);
RenderProcessHost* render_process_host = render_frame_host->GetProcess();
render_process_host->FilterURL(false, &validated_url);
if (net::ERR_ABORTED == params.error_code) {
// EVIL HACK ALERT! Ignore failed loads when we're showing interstitials.
// This means that the interstitial won't be torn down properly, which is
// bad. But if we have an interstitial, go back to another tab type, and
// then load the same interstitial again, we could end up getting the first
// interstitial's "failed" message (as a result of the cancel) when we're on
// the second one. We can't tell this apart, so we think we're tearing down
// the current page which will cause a crash later on.
//
// http://code.google.com/p/chromium/issues/detail?id=2855
// Because this will not tear down the interstitial properly, if "back" is
// back to another tab type, the interstitial will still be somewhat alive
// in the previous tab type. If you navigate somewhere that activates the
// tab with the interstitial again, you'll see a flash before the new load
// commits of the interstitial page.
FrameTreeNode* root =
render_frame_host->frame_tree_node()->frame_tree()->root();
if (root->render_manager()->interstitial_page() != NULL) {
LOG(WARNING) << "Discarding message during interstitial.";
return;
}
// We used to cancel the pending renderer here for cross-site downloads.
// However, it's not safe to do that because the download logic repeatedly
// looks for this WebContents based on a render ID. Instead, we just
// leave the pending renderer around until the next navigation event
// (Navigate, DidNavigate, etc), which will clean it up properly.
//
// TODO(creis): Find a way to cancel any pending RFH here.
}
// We usually clear the pending entry when it fails, so that an arbitrary URL
// isn't left visible above a committed page. This must be enforced when
// the pending entry isn't visible (e.g., renderer-initiated navigations) to
// prevent URL spoofs for in-page navigations that don't go through
// DidStartProvisionalLoadForFrame.
//
// However, we do preserve the pending entry in some cases, such as on the
// initial navigation of an unmodified blank tab. We also allow the delegate
// to say when it's safe to leave aborted URLs in the omnibox, to let the user
// edit the URL and try again. This may be useful in cases that the committed
// page cannot be attacker-controlled. In these cases, we still allow the
// view to clear the pending entry and typed URL if the user requests
// (e.g., hitting Escape with focus in the address bar).
//
// Note: don't touch the transient entry, since an interstitial may exist.
bool should_preserve_entry = controller_->IsUnmodifiedBlankTab() ||
delegate_->ShouldPreserveAbortedURLs();
if (controller_->GetPendingEntry() != controller_->GetVisibleEntry() ||
!should_preserve_entry) {
controller_->DiscardPendingEntry(true);
// Also force the UI to refresh.
controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
}
if (delegate_)
delegate_->DidFailProvisionalLoadWithError(render_frame_host, params);
}
void NavigatorImpl::DidFailLoadWithError(
RenderFrameHostImpl* render_frame_host,
const GURL& url,
int error_code,
const base::string16& error_description,
bool was_ignored_by_handler) {
if (delegate_) {
delegate_->DidFailLoadWithError(
render_frame_host, url, error_code,
error_description, was_ignored_by_handler);
}
}
bool NavigatorImpl::NavigateToEntry(
FrameTreeNode* frame_tree_node,
const FrameNavigationEntry& frame_entry,
const NavigationEntryImpl& entry,
NavigationController::ReloadType reload_type,
bool is_same_document_history_load,
bool is_pending_entry) {
TRACE_EVENT0("browser,navigation", "NavigatorImpl::NavigateToEntry");
GURL dest_url = frame_entry.url();
Referrer dest_referrer = frame_entry.referrer();
if (reload_type ==
NavigationController::ReloadType::RELOAD_ORIGINAL_REQUEST_URL &&
entry.GetOriginalRequestURL().is_valid() && !entry.GetHasPostData()) {
// We may have been redirected when navigating to the current URL.
// Use the URL the user originally intended to visit, if it's valid and if a
// POST wasn't involved; the latter case avoids issues with sending data to
// the wrong page.
dest_url = entry.GetOriginalRequestURL();
dest_referrer = Referrer();
}
// Don't attempt to navigate to non-empty invalid URLs.
if (!dest_url.is_valid() && !dest_url.is_empty()) {
LOG(WARNING) << "Refusing to load invalid URL: "
<< dest_url.possibly_invalid_spec();
return false;
}
// The renderer will reject IPC messages with URLs longer than
// this limit, so don't attempt to navigate with a longer URL.
if (dest_url.spec().size() > kMaxURLChars) {
LOG(WARNING) << "Refusing to load URL as it exceeds " << kMaxURLChars
<< " characters.";
return false;
}
// This will be used to set the Navigation Timing API navigationStart
// parameter for browser navigations in new tabs (intents, tabs opened through
// "Open link in new tab"). We need to keep it above RFHM::Navigate() call to
// capture the time needed for the RenderFrameHost initialization.
base::TimeTicks navigation_start = base::TimeTicks::Now();
TRACE_EVENT_INSTANT_WITH_TIMESTAMP0(
"navigation", "NavigationTiming navigationStart",
TRACE_EVENT_SCOPE_GLOBAL, navigation_start.ToInternalValue());
LoFiState lofi_state =
(reload_type ==
NavigationController::ReloadType::RELOAD_DISABLE_LOFI_MODE)
? LOFI_OFF
: LOFI_UNSPECIFIED;
// PlzNavigate: the RenderFrameHosts are no longer asked to navigate.
if (IsBrowserSideNavigationEnabled()) {
navigation_data_.reset(new NavigationMetricsData(navigation_start, dest_url,
entry.restore_type()));
RequestNavigation(frame_tree_node, dest_url, dest_referrer, frame_entry,
entry, reload_type, lofi_state,
is_same_document_history_load, navigation_start);
if (frame_tree_node->IsMainFrame() &&
frame_tree_node->navigation_request()) {
// TODO(carlosk): extend these traces to support subframes and
// non-PlzNavigate navigations.
// For these traces below we're using the navigation handle as the async
// trace id, |navigation_start| as the timestamp and reporting the
// FrameTreeNode id as a parameter. For navigations where no network
// request is made (data URLs, JavaScript URLs, etc) there is no handle
// and so no tracing is done.
TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP1(
"navigation", "Navigation timeToNetworkStack",
frame_tree_node->navigation_request()->navigation_handle(),
navigation_start.ToInternalValue(),
"FrameTreeNode id", frame_tree_node->frame_tree_node_id());
TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP1(
"navigation", "Navigation timeToCommit",
frame_tree_node->navigation_request()->navigation_handle(),
navigation_start.ToInternalValue(),
"FrameTreeNode id", frame_tree_node->frame_tree_node_id());
}
// Notify observers about navigation if this is for the pending entry.
if (delegate_ && is_pending_entry)
delegate_->DidStartNavigationToPendingEntry(dest_url, reload_type);
return true;
}
RenderFrameHostImpl* dest_render_frame_host =
frame_tree_node->render_manager()->Navigate(dest_url, frame_entry, entry);
if (!dest_render_frame_host)
return false; // Unable to create the desired RenderFrameHost.
// Make sure no code called via RFHM::Navigate clears the pending entry.
if (is_pending_entry)
CHECK_EQ(controller_->GetPendingEntry(), &entry);
// For security, we should never send non-Web-UI URLs to a Web UI renderer.
// Double check that here.
CheckWebUIRendererDoesNotDisplayNormalURL(dest_render_frame_host, dest_url);
// In the case of a transfer navigation, set the destination RenderFrameHost
// as loading. This ensures that the RenderFrameHost gets in a loading state
// without emitting a spurious DidStartLoading notification at the
// FrameTreeNode level (since the FrameTreeNode was already loading). Note
// that this works both for a transfer to a different RenderFrameHost and in
// the rare case where the navigation is transferred back to the same
// RenderFrameHost.
bool is_transfer = entry.transferred_global_request_id().child_id != -1;
if (is_transfer)
dest_render_frame_host->set_is_loading(true);
// Navigate in the desired RenderFrameHost.
// We can skip this step in the rare case that this is a transfer navigation
// which began in the chosen RenderFrameHost, since the request has already
// been issued. In that case, simply resume the response.
bool is_transfer_to_same = is_transfer &&
entry.transferred_global_request_id().child_id ==
dest_render_frame_host->GetProcess()->GetID();
if (!is_transfer_to_same) {
navigation_data_.reset(new NavigationMetricsData(navigation_start, dest_url,
entry.restore_type()));
// Create the navigation parameters.
FrameMsg_Navigate_Type::Value navigation_type =
GetNavigationType(controller_->GetBrowserContext(), entry, reload_type);
dest_render_frame_host->Navigate(
entry.ConstructCommonNavigationParams(dest_url, dest_referrer,
navigation_type, lofi_state,
navigation_start),
entry.ConstructStartNavigationParams(),
entry.ConstructRequestNavigationParams(
frame_entry, is_same_document_history_load,
frame_tree_node->has_committed_real_load(),
controller_->GetPendingEntryIndex() == -1,
controller_->GetIndexOfEntry(&entry),
controller_->GetLastCommittedEntryIndex(),
controller_->GetEntryCount()));
} else {
// No need to navigate again. Just resume the deferred request.
dest_render_frame_host->GetProcess()->ResumeDeferredNavigation(
entry.transferred_global_request_id());
}
// Make sure no code called via RFH::Navigate clears the pending entry.
if (is_pending_entry)
CHECK_EQ(controller_->GetPendingEntry(), &entry);
if (controller_->GetPendingEntryIndex() == -1 &&
dest_url.SchemeIs(url::kJavaScriptScheme)) {
// If the pending entry index is -1 (which means a new navigation rather
// than a history one), and the user typed in a javascript: URL, don't add
// it to the session history.
//
// This is a hack. What we really want is to avoid adding to the history any
// URL that doesn't generate content, and what would be great would be if we
// had a message from the renderer telling us that a new page was not
// created. The same message could be used for mailto: URLs and the like.
return false;
}
// Notify observers about navigation.
if (delegate_ && is_pending_entry)
delegate_->DidStartNavigationToPendingEntry(dest_url, reload_type);
return true;
}
bool NavigatorImpl::NavigateToPendingEntry(
FrameTreeNode* frame_tree_node,
const FrameNavigationEntry& frame_entry,
NavigationController::ReloadType reload_type,
bool is_same_document_history_load) {
return NavigateToEntry(frame_tree_node, frame_entry,
*controller_->GetPendingEntry(), reload_type,
is_same_document_history_load, true);
}
bool NavigatorImpl::NavigateNewChildFrame(
RenderFrameHostImpl* render_frame_host,
const std::string& unique_name) {
NavigationEntryImpl* entry =
controller_->GetEntryWithUniqueID(render_frame_host->nav_entry_id());
if (!entry)
return false;
FrameNavigationEntry* frame_entry =
entry->GetFrameEntryByUniqueName(unique_name);
if (!frame_entry)
return false;
// Update the FrameNavigationEntry's FrameTreeNode ID (which is currently the
// ID of the old FrameTreeNode that no longer exists) to be the ID of the
// newly created frame.
frame_entry->set_frame_tree_node_id(
render_frame_host->frame_tree_node()->frame_tree_node_id());
return NavigateToEntry(render_frame_host->frame_tree_node(), *frame_entry,
*entry, NavigationControllerImpl::NO_RELOAD, false,
false);
}
void NavigatorImpl::DidNavigate(
RenderFrameHostImpl* render_frame_host,
const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
FrameTree* frame_tree = render_frame_host->frame_tree_node()->frame_tree();
bool oopifs_possible = SiteIsolationPolicy::AreCrossProcessFramesPossible();
bool has_embedded_credentials =
params.url.has_username() || params.url.has_password();
UMA_HISTOGRAM_BOOLEAN("Navigation.FrameHasEmbeddedCredentials",
has_embedded_credentials);
bool is_navigation_within_page = controller_->IsURLInPageNavigation(
params.url, params.was_within_same_page, render_frame_host);
if (ui::PageTransitionIsMainFrame(params.transition)) {
if (delegate_) {
// When overscroll navigation gesture is enabled, a screenshot of the page
// in its current state is taken so that it can be used during the
// nav-gesture. It is necessary to take the screenshot here, before
// calling RenderFrameHostManager::DidNavigateMainFrame, because that can
// change WebContents::GetRenderViewHost to return the new host, instead
// of the one that may have just been swapped out.
if (delegate_->CanOverscrollContent()) {
// Don't take screenshots if we are staying on the same page. We want
// in-page navigations to be super fast, and taking a screenshot
// currently blocks GPU for a longer time than we are willing to
// tolerate in this use case.
if (!params.was_within_same_page)
controller_->TakeScreenshot();
}
// Run tasks that must execute just before the commit.
delegate_->DidNavigateMainFramePreCommit(is_navigation_within_page);
UMA_HISTOGRAM_BOOLEAN("Navigation.MainFrameHasEmbeddedCredentials",
has_embedded_credentials);
}
if (!oopifs_possible)
frame_tree->root()->render_manager()->DidNavigateFrame(
render_frame_host, params.gesture == NavigationGestureUser);
}
// Save the origin of the new page. Do this before calling
// DidNavigateFrame(), because the origin needs to be included in the SwapOut
// message, which is sent inside DidNavigateFrame(). SwapOut needs the
// origin because it creates a RenderFrameProxy that needs this to initialize
// its security context. This origin will also be sent to RenderFrameProxies
// created via ViewMsg_New and FrameMsg_NewFrameProxy.
render_frame_host->frame_tree_node()->SetCurrentOrigin(params.origin);
render_frame_host->frame_tree_node()->SetEnforceStrictMixedContentChecking(
params.should_enforce_strict_mixed_content_checking);
// When using --site-per-process, we notify the RFHM for all navigations,
// not just main frame navigations.
if (oopifs_possible) {
FrameTreeNode* frame = render_frame_host->frame_tree_node();
frame->render_manager()->DidNavigateFrame(
render_frame_host, params.gesture == NavigationGestureUser);
}
// Update the site of the SiteInstance if it doesn't have one yet, unless
// assigning a site is not necessary for this URL. In that case, the
// SiteInstance can still be considered unused until a navigation to a real
// page.
SiteInstanceImpl* site_instance = render_frame_host->GetSiteInstance();
if (!site_instance->HasSite() &&
ShouldAssignSiteForURL(params.url)) {
site_instance->SetSite(params.url);
}
// Need to update MIME type here because it's referred to in
// UpdateNavigationCommands() called by RendererDidNavigate() to
// determine whether or not to enable the encoding menu.
// It's updated only for the main frame. For a subframe,
// RenderView::UpdateURL does not set params.contents_mime_type.
// (see http://code.google.com/p/chromium/issues/detail?id=2929 )
// TODO(jungshik): Add a test for the encoding menu to avoid
// regressing it again.
// TODO(nasko): Verify the correctness of the above comment, since some of the
// code doesn't exist anymore. Also, move this code in the
// PageTransitionIsMainFrame code block above.
if (ui::PageTransitionIsMainFrame(params.transition) && delegate_)
delegate_->SetMainFrameMimeType(params.contents_mime_type);
LoadCommittedDetails details;
bool did_navigate = controller_->RendererDidNavigate(render_frame_host,
params, &details);
// Keep track of each frame's URL in its FrameTreeNode, whether it's for a net
// error or not.
// TODO(creis): Move the last committed URL to RenderFrameHostImpl.
render_frame_host->frame_tree_node()->SetCurrentURL(params.url);
// Separately, update the frame's last successful URL except for net error
// pages, since those do not end up in the correct process after transfers
// (see https://crbug.com/560511). Instead, the next cross-process navigation
// or transfer should decide whether to swap as if the net error had not
// occurred.
// TODO(creis): Remove this block and always set the URL once transfers handle
// network errors or PlzNavigate is enabled. See https://crbug.com/588314.
if (!params.url_is_unreachable)
render_frame_host->set_last_successful_url(params.url);
if (did_navigate && render_frame_host->frame_tree_node()->IsMainFrame() &&
IsBrowserSideNavigationEnabled()) {
TRACE_EVENT_ASYNC_END0("navigation", "Navigation timeToCommit",
render_frame_host->navigation_handle());
}
// Send notification about committed provisional loads. This notification is
// different from the NAV_ENTRY_COMMITTED notification which doesn't include
// the actual URL navigated to and isn't sent for AUTO_SUBFRAME navigations.
if (details.type != NAVIGATION_TYPE_NAV_IGNORE && delegate_) {
DCHECK_EQ(!render_frame_host->GetParent(),
did_navigate ? details.is_main_frame : false);
ui::PageTransition transition_type = params.transition;
// Whether or not a page transition was triggered by going backward or
// forward in the history is only stored in the navigation controller's
// entry list.
if (did_navigate &&
(controller_->GetLastCommittedEntry()->GetTransitionType() &
ui::PAGE_TRANSITION_FORWARD_BACK)) {
transition_type = ui::PageTransitionFromInt(
params.transition | ui::PAGE_TRANSITION_FORWARD_BACK);
}
delegate_->DidCommitProvisionalLoad(render_frame_host,
params.url,
transition_type);
render_frame_host->navigation_handle()->DidCommitNavigation(
params, is_navigation_within_page, render_frame_host);
render_frame_host->SetNavigationHandle(nullptr);
}
if (!did_navigate)
return; // No navigation happened.
// DO NOT ADD MORE STUFF TO THIS FUNCTION! Your component should either listen
// for the appropriate notification (best) or you can add it to
// DidNavigateMainFramePostCommit / DidNavigateAnyFramePostCommit (only if
// necessary, please).
// TODO(carlosk): Move this out when PlzNavigate implementation properly calls
// the observer methods.
RecordNavigationMetrics(details, params, site_instance);
// Run post-commit tasks.
if (delegate_) {
if (details.is_main_frame) {
delegate_->DidNavigateMainFramePostCommit(render_frame_host,
details, params);
}
delegate_->DidNavigateAnyFramePostCommit(
render_frame_host, details, params);
}
}
bool NavigatorImpl::ShouldAssignSiteForURL(const GURL& url) {
// about:blank should not "use up" a new SiteInstance. The SiteInstance can
// still be used for a normal web site.
if (url == GURL(url::kAboutBlankURL))
return false;
// The embedder will then have the opportunity to determine if the URL
// should "use up" the SiteInstance.
return GetContentClient()->browser()->ShouldAssignSiteForURL(url);
}
void NavigatorImpl::RequestOpenURL(RenderFrameHostImpl* render_frame_host,
const GURL& url,
SiteInstance* source_site_instance,
const Referrer& referrer,
WindowOpenDisposition disposition,
bool should_replace_current_entry,
bool user_gesture) {
// This call only makes sense for subframes if OOPIFs are possible.
DCHECK(!render_frame_host->GetParent() ||
SiteIsolationPolicy::AreCrossProcessFramesPossible());
// If this came from a swapped out RenderFrameHost, we only allow the request
// if we are still in the same BrowsingInstance.
SiteInstance* current_site_instance = render_frame_host->frame_tree_node()
->current_frame_host()
->GetSiteInstance();
if (render_frame_host->is_swapped_out() &&
!render_frame_host->GetSiteInstance()->IsRelatedSiteInstance(
current_site_instance)) {
return;
}
// TODO(creis): Pass the redirect_chain into this method to support client
// redirects. http://crbug.com/311721.
std::vector<GURL> redirect_chain;
GURL dest_url(url);
if (!GetContentClient()->browser()->ShouldAllowOpenURL(
current_site_instance, url)) {
dest_url = GURL(url::kAboutBlankURL);
}
int frame_tree_node_id = -1;
// Send the navigation to the current FrameTreeNode if it's destined for a
// subframe in the current tab. We'll assume it's for the main frame
// (possibly of a new or different WebContents) otherwise.
if (SiteIsolationPolicy::AreCrossProcessFramesPossible() &&
disposition == CURRENT_TAB && render_frame_host->GetParent()) {
frame_tree_node_id =
render_frame_host->frame_tree_node()->frame_tree_node_id();
}
OpenURLParams params(dest_url, referrer, frame_tree_node_id, disposition,
ui::PAGE_TRANSITION_LINK,
true /* is_renderer_initiated */);
params.source_site_instance = source_site_instance;
if (redirect_chain.size() > 0)
params.redirect_chain = redirect_chain;
params.should_replace_current_entry = should_replace_current_entry;
params.user_gesture = user_gesture;
if (render_frame_host->web_ui()) {
// Web UI pages sometimes want to override the page transition type for
// link clicks (e.g., so the new tab page can specify AUTO_BOOKMARK for
// automatically generated suggestions). We don't override other types
// like TYPED because they have different implications (e.g., autocomplete).
if (ui::PageTransitionCoreTypeIs(
params.transition, ui::PAGE_TRANSITION_LINK))
params.transition = render_frame_host->web_ui()->GetLinkTransitionType();
// Note also that we hide the referrer for Web UI pages. We don't really
// want web sites to see a referrer of "chrome://blah" (and some
// chrome: URLs might have search terms or other stuff we don't want to
// send to the site), so we send no referrer.
params.referrer = Referrer();
// Navigations in Web UI pages count as browser-initiated navigations.
params.is_renderer_initiated = false;
}
if (delegate_)
delegate_->RequestOpenURL(render_frame_host, params);
}
void NavigatorImpl::RequestTransferURL(
RenderFrameHostImpl* render_frame_host,
const GURL& url,
SiteInstance* source_site_instance,
const std::vector<GURL>& redirect_chain,
const Referrer& referrer,
ui::PageTransition page_transition,
const GlobalRequestID& transferred_global_request_id,
bool should_replace_current_entry) {
// This call only makes sense for subframes if OOPIFs are possible.
DCHECK(!render_frame_host->GetParent() ||
SiteIsolationPolicy::AreCrossProcessFramesPossible());
// Allow the delegate to cancel the transfer.
if (!delegate_->ShouldTransferNavigation())
return;
GURL dest_url(url);
Referrer referrer_to_use(referrer);
FrameTreeNode* node = render_frame_host->frame_tree_node();
SiteInstance* current_site_instance = render_frame_host->GetSiteInstance();
if (!GetContentClient()->browser()->ShouldAllowOpenURL(current_site_instance,
url)) {
dest_url = GURL(url::kAboutBlankURL);
}
// TODO(creis): Determine if this transfer started as a browser-initiated
// navigation. See https://crbug.com/495161.
bool is_renderer_initiated = true;
if (render_frame_host->web_ui()) {
// Web UI pages sometimes want to override the page transition type for
// link clicks (e.g., so the new tab page can specify AUTO_BOOKMARK for
// automatically generated suggestions). We don't override other types
// like TYPED because they have different implications (e.g., autocomplete).
if (ui::PageTransitionCoreTypeIs(page_transition, ui::PAGE_TRANSITION_LINK))
page_transition = render_frame_host->web_ui()->GetLinkTransitionType();
// Note also that we hide the referrer for Web UI pages. We don't really
// want web sites to see a referrer of "chrome://blah" (and some
// chrome: URLs might have search terms or other stuff we don't want to
// send to the site), so we send no referrer.
referrer_to_use = Referrer();
// Navigations in Web UI pages count as browser-initiated navigations.
is_renderer_initiated = false;
}
NavigationController::LoadURLParams load_url_params(dest_url);
// The source_site_instance may matter for navigations via RenderFrameProxy.
load_url_params.source_site_instance = source_site_instance;
load_url_params.transition_type = page_transition;
load_url_params.frame_tree_node_id = node->frame_tree_node_id();
load_url_params.referrer = referrer_to_use;
load_url_params.redirect_chain = redirect_chain;
load_url_params.is_renderer_initiated = is_renderer_initiated;
load_url_params.transferred_global_request_id = transferred_global_request_id;
load_url_params.should_replace_current_entry = should_replace_current_entry;
controller_->LoadURLWithParams(load_url_params);
}
// PlzNavigate
void NavigatorImpl::OnBeforeUnloadACK(FrameTreeNode* frame_tree_node,
bool proceed) {
CHECK(IsBrowserSideNavigationEnabled());
DCHECK(frame_tree_node);
NavigationRequest* navigation_request = frame_tree_node->navigation_request();
// The NavigationRequest may have been canceled while the renderer was
// executing the BeforeUnload event.
if (!navigation_request)
return;
DCHECK_EQ(NavigationRequest::WAITING_FOR_RENDERER_RESPONSE,
navigation_request->state());
// If the navigation is allowed to proceed, send the request to the IO thread.
if (proceed)
navigation_request->BeginNavigation();
else
CancelNavigation(frame_tree_node);
}
// PlzNavigate
void NavigatorImpl::OnBeginNavigation(
FrameTreeNode* frame_tree_node,
const CommonNavigationParams& common_params,
const BeginNavigationParams& begin_params,
scoped_refptr<ResourceRequestBody> body) {
// TODO(clamy): the url sent by the renderer should be validated with
// FilterURL.
// This is a renderer-initiated navigation.
CHECK(IsBrowserSideNavigationEnabled());
DCHECK(frame_tree_node);
NavigationRequest* ongoing_navigation_request =
frame_tree_node->navigation_request();
// The renderer-initiated navigation request is ignored iff a) there is an
// ongoing request b) which is browser or user-initiated and c) the renderer
// request is not user-initiated.
if (ongoing_navigation_request &&
(ongoing_navigation_request->browser_initiated() ||
ongoing_navigation_request->begin_params().has_user_gesture) &&
!begin_params.has_user_gesture) {
RenderFrameHost* current_frame_host =
frame_tree_node->render_manager()->current_frame_host();
current_frame_host->Send(
new FrameMsg_Stop(current_frame_host->GetRoutingID()));
return;
}
// In all other cases the current navigation, if any, is canceled and a new
// NavigationRequest is created for the node.
frame_tree_node->CreatedNavigationRequest(
NavigationRequest::CreateRendererInitiated(
frame_tree_node, common_params, begin_params, body,
controller_->GetLastCommittedEntryIndex(),
controller_->GetEntryCount()));
NavigationRequest* navigation_request = frame_tree_node->navigation_request();
navigation_request->CreateNavigationHandle();
if (frame_tree_node->IsMainFrame()) {
// Renderer-initiated main-frame navigations that need to swap processes
// will go to the browser via a OpenURL call, and then be handled by the
// same code path as browser-initiated navigations. For renderer-initiated
// main frame navigation that start via a BeginNavigation IPC, the
// RenderFrameHost will not be swapped. Therefore it is safe to call
// DidStartMainFrameNavigation with the SiteInstance from the current
// RenderFrameHost.
DidStartMainFrameNavigation(
common_params.url,
frame_tree_node->current_frame_host()->GetSiteInstance());
navigation_data_.reset();
}
navigation_request->BeginNavigation();
}
// PlzNavigate
void NavigatorImpl::CommitNavigation(FrameTreeNode* frame_tree_node,
ResourceResponse* response,
scoped_ptr<StreamHandle> body) {
CHECK(IsBrowserSideNavigationEnabled());
NavigationRequest* navigation_request = frame_tree_node->navigation_request();
DCHECK(navigation_request);
DCHECK(response ||
!ShouldMakeNetworkRequestForURL(
navigation_request->common_params().url));
// HTTP 204 (No Content) and HTTP 205 (Reset Content) responses should not
// commit; they leave the frame showing the previous page.
if (response && response->head.headers.get() &&
(response->head.headers->response_code() == 204 ||
response->head.headers->response_code() == 205)) {
CancelNavigation(frame_tree_node);
return;
}
// Select an appropriate renderer to commit the navigation.
RenderFrameHostImpl* render_frame_host =
frame_tree_node->render_manager()->GetFrameHostForNavigation(
*navigation_request);
// The renderer can exit view source mode when any error or cancellation
// happen. When reusing the same renderer, overwrite to recover the mode.
if (navigation_request->is_view_source() &&
render_frame_host ==
frame_tree_node->render_manager()->current_frame_host()) {
DCHECK(!render_frame_host->GetParent());
render_frame_host->render_view_host()->Send(
new ViewMsg_EnableViewSourceMode(
render_frame_host->render_view_host()->GetRoutingID()));
}
CheckWebUIRendererDoesNotDisplayNormalURL(
render_frame_host, navigation_request->common_params().url);
navigation_request->TransferNavigationHandleOwnership(render_frame_host);
render_frame_host->navigation_handle()->ReadyToCommitNavigation(
render_frame_host, response ? response->head.headers : nullptr);
render_frame_host->CommitNavigation(response, std::move(body),
navigation_request->common_params(),
navigation_request->request_params());
}
// PlzNavigate
void NavigatorImpl::FailedNavigation(FrameTreeNode* frame_tree_node,
bool has_stale_copy_in_cache,
int error_code) {
CHECK(IsBrowserSideNavigationEnabled());
NavigationRequest* navigation_request = frame_tree_node->navigation_request();
DCHECK(navigation_request);
// If the request was canceled by the user do not show an error page.
if (error_code == net::ERR_ABORTED) {
frame_tree_node->ResetNavigationRequest(false);
return;
}
// Select an appropriate renderer to show the error page.
RenderFrameHostImpl* render_frame_host =
frame_tree_node->render_manager()->GetFrameHostForNavigation(
*navigation_request);
CheckWebUIRendererDoesNotDisplayNormalURL(
render_frame_host, navigation_request->common_params().url);
navigation_request->TransferNavigationHandleOwnership(render_frame_host);
render_frame_host->navigation_handle()->ReadyToCommitNavigation(
render_frame_host, scoped_refptr<net::HttpResponseHeaders>());
render_frame_host->FailedNavigation(navigation_request->common_params(),
navigation_request->request_params(),
has_stale_copy_in_cache, error_code);
}
// PlzNavigate
void NavigatorImpl::CancelNavigation(FrameTreeNode* frame_tree_node) {
CHECK(IsBrowserSideNavigationEnabled());
frame_tree_node->ResetNavigationRequest(false);
if (frame_tree_node->IsMainFrame())
navigation_data_.reset();
}
void NavigatorImpl::LogResourceRequestTime(
base::TimeTicks timestamp, const GURL& url) {
if (navigation_data_ && navigation_data_->url_ == url) {
navigation_data_->url_job_start_time_ = timestamp;
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToURLJobStart",
navigation_data_->url_job_start_time_ - navigation_data_->start_time_);
}
}
void NavigatorImpl::LogBeforeUnloadTime(
const base::TimeTicks& renderer_before_unload_start_time,
const base::TimeTicks& renderer_before_unload_end_time) {
// Only stores the beforeunload delay if we're tracking a browser initiated
// navigation and it happened later than the navigation request.
if (navigation_data_ &&
renderer_before_unload_start_time > navigation_data_->start_time_) {
navigation_data_->before_unload_delay_ =
renderer_before_unload_end_time - renderer_before_unload_start_time;
}
}
void NavigatorImpl::CheckWebUIRendererDoesNotDisplayNormalURL(
RenderFrameHostImpl* render_frame_host,
const GURL& url) {
int enabled_bindings =
render_frame_host->render_view_host()->GetEnabledBindings();
bool is_allowed_in_web_ui_renderer =
WebUIControllerFactoryRegistry::GetInstance()->IsURLAcceptableForWebUI(
controller_->GetBrowserContext(), url);
if ((enabled_bindings & BINDINGS_POLICY_WEB_UI) &&
!is_allowed_in_web_ui_renderer) {
// Log the URL to help us diagnose any future failures of this CHECK.
GetContentClient()->SetActiveURL(url);
CHECK(0);
}
}
// PlzNavigate
void NavigatorImpl::RequestNavigation(
FrameTreeNode* frame_tree_node,
const GURL& dest_url,
const Referrer& dest_referrer,
const FrameNavigationEntry& frame_entry,
const NavigationEntryImpl& entry,
NavigationController::ReloadType reload_type,
LoFiState lofi_state,
bool is_same_document_history_load,
base::TimeTicks navigation_start) {
CHECK(IsBrowserSideNavigationEnabled());
DCHECK(frame_tree_node);
// This value must be set here because creating a NavigationRequest might
// change the renderer live/non-live status and change this result.
bool should_dispatch_beforeunload =
frame_tree_node->current_frame_host()->ShouldDispatchBeforeUnload();
FrameMsg_Navigate_Type::Value navigation_type =
GetNavigationType(controller_->GetBrowserContext(), entry, reload_type);
frame_tree_node->CreatedNavigationRequest(
NavigationRequest::CreateBrowserInitiated(
frame_tree_node, dest_url, dest_referrer, frame_entry, entry,
navigation_type, lofi_state, is_same_document_history_load,
navigation_start, controller_));
NavigationRequest* navigation_request = frame_tree_node->navigation_request();
navigation_request->CreateNavigationHandle();
// Have the current renderer execute its beforeunload event if needed. If it
// is not needed (when beforeunload dispatch is not needed or this navigation
// is synchronous and same-site) then NavigationRequest::BeginNavigation
// should be directly called instead.
if (should_dispatch_beforeunload &&
ShouldMakeNetworkRequestForURL(
navigation_request->common_params().url)) {
navigation_request->SetWaitingForRendererResponse();
frame_tree_node->current_frame_host()->DispatchBeforeUnload(true);
} else {
navigation_request->BeginNavigation();
}
}
void NavigatorImpl::RecordNavigationMetrics(
const LoadCommittedDetails& details,
const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
SiteInstance* site_instance) {
DCHECK(site_instance->HasProcess());
if (!details.is_in_page)
RecordAction(base::UserMetricsAction("FrameLoad"));
if (!details.is_main_frame || !navigation_data_ ||
navigation_data_->url_job_start_time_.is_null() ||
navigation_data_->url_ != params.original_request_url) {
return;
}
base::TimeDelta time_to_commit =
base::TimeTicks::Now() - navigation_data_->start_time_;
UMA_HISTOGRAM_TIMES("Navigation.TimeToCommit", time_to_commit);
time_to_commit -= navigation_data_->before_unload_delay_;
base::TimeDelta time_to_network = navigation_data_->url_job_start_time_ -
navigation_data_->start_time_ -
navigation_data_->before_unload_delay_;
if (navigation_data_->is_restoring_from_last_session_) {
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToCommit_SessionRestored_BeforeUnloadDiscounted",
time_to_commit);
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToURLJobStart_SessionRestored_BeforeUnloadDiscounted",
time_to_network);
navigation_data_.reset();
return;
}
bool navigation_created_new_renderer_process =
site_instance->GetProcess()->GetInitTimeForNavigationMetrics() >
navigation_data_->start_time_;
if (navigation_created_new_renderer_process) {
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToCommit_NewRenderer_BeforeUnloadDiscounted",
time_to_commit);
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToURLJobStart_NewRenderer_BeforeUnloadDiscounted",
time_to_network);
} else {
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToCommit_ExistingRenderer_BeforeUnloadDiscounted",
time_to_commit);
UMA_HISTOGRAM_TIMES(
"Navigation.TimeToURLJobStart_ExistingRenderer_BeforeUnloadDiscounted",
time_to_network);
}
navigation_data_.reset();
}
void NavigatorImpl::DidStartMainFrameNavigation(
const GURL& url,
SiteInstanceImpl* site_instance) {
// If there is no browser-initiated pending entry for this navigation and it
// is not for the error URL, create a pending entry using the current
// SiteInstance, and ensure the address bar updates accordingly. We don't
// know the referrer or extra headers at this point, but the referrer will
// be set properly upon commit.
NavigationEntryImpl* pending_entry = controller_->GetPendingEntry();
bool has_browser_initiated_pending_entry =
pending_entry && !pending_entry->is_renderer_initiated();
if (!has_browser_initiated_pending_entry) {
scoped_ptr<NavigationEntryImpl> entry =
NavigationEntryImpl::FromNavigationEntry(
controller_->CreateNavigationEntry(
url, content::Referrer(), ui::PAGE_TRANSITION_LINK,
true /* is_renderer_initiated */, std::string(),
controller_->GetBrowserContext()));
entry->set_site_instance(site_instance);
// TODO(creis): If there's a pending entry already, find a safe way to
// update it instead of replacing it and copying over things like this.
if (pending_entry) {
entry->set_transferred_global_request_id(
pending_entry->transferred_global_request_id());
entry->set_should_replace_entry(pending_entry->should_replace_entry());
entry->SetRedirectChain(pending_entry->GetRedirectChain());
}
controller_->SetPendingEntry(std::move(entry));
if (delegate_)
delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
}
}
} // namespace content