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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/sessions/chrome_serialized_navigation_driver.h"
#include "base/memory/singleton.h"
#include "build/build_config.h"
#include "chrome/common/url_constants.h"
#include "components/sessions/core/serialized_navigation_entry.h"
#include "content/public/common/referrer.h"
#if BUILDFLAG(IS_ANDROID)
#include "content/public/common/content_features.h"
#include "third_party/blink/public/common/page_state/page_state.h"
#endif
namespace {
#if BUILDFLAG(IS_ANDROID)
// Mutates |navigation| so that it targets |new_destination_url| and has no
// referrer information.
void ChangeDestination(const GURL& new_destination_url,
sessions::SerializedNavigationEntry* navigation) {
navigation->set_virtual_url(new_destination_url);
navigation->set_original_request_url(new_destination_url);
navigation->set_encoded_page_state(
blink::PageState::CreateFromURL(new_destination_url).ToEncodedData());
// Make sure the referrer stored in the PageState (above) and in the
// SerializedNavigationEntry (below) are in-sync.
navigation->set_referrer_url(GURL());
navigation->set_referrer_policy(
static_cast<int>(network::mojom::ReferrerPolicy::kDefault));
}
#endif // BUILDFLAG(IS_ANDROID)
} // namespace
ChromeSerializedNavigationDriver::~ChromeSerializedNavigationDriver() = default;
// static
ChromeSerializedNavigationDriver*
ChromeSerializedNavigationDriver::GetInstance() {
return base::Singleton<
ChromeSerializedNavigationDriver,
base::LeakySingletonTraits<ChromeSerializedNavigationDriver>>::get();
}
void ChromeSerializedNavigationDriver::Sanitize(
sessions::SerializedNavigationEntry* navigation) const {
content::Referrer old_referrer(
navigation->referrer_url(),
content::Referrer::ConvertToPolicy(navigation->referrer_policy()));
content::Referrer new_referrer = content::Referrer::SanitizeForRequest(
navigation->virtual_url(), old_referrer);
// No need to compare the policy, as it doesn't change during
// sanitization. If there has been a change, the referrer needs to be
// stripped from the page state as well.
if (navigation->referrer_url() != new_referrer.url) {
auto* driver = sessions::SerializedNavigationDriver::Get();
navigation->set_referrer_url(GURL());
navigation->set_referrer_policy(driver->GetDefaultReferrerPolicy());
navigation->set_encoded_page_state(
driver->StripReferrerFromPageState(navigation->encoded_page_state()));
}
#if BUILDFLAG(IS_ANDROID)
// Rewrite the old new tab URL to the new NTP URL.
if (navigation->virtual_url().SchemeIs(content::kChromeUIScheme) &&
navigation->virtual_url().host_piece() == chrome::kChromeUINewTabHost) {
ChangeDestination(GURL(chrome::kChromeUINativeNewTabURL), navigation);
}
#endif // BUILDFLAG(IS_ANDROID)
}
ChromeSerializedNavigationDriver::ChromeSerializedNavigationDriver() = default;
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