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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 "components/sessions/content/content_serialized_navigation_driver.h"
#include "base/memory/singleton.h"
#include "components/sessions/serialized_navigation_entry.h"
#include "content/public/common/page_state.h"
#include "content/public/common/referrer.h"
namespace sessions {
namespace {
const int kObsoleteReferrerPolicyAlways = 0;
const int kObsoleteReferrerPolicyDefault = 1;
const int kObsoleteReferrerPolicyNever = 2;
const int kObsoleteReferrerPolicyOrigin = 3;
} // namespace
// static
SerializedNavigationDriver* SerializedNavigationDriver::Get() {
return ContentSerializedNavigationDriver::GetInstance();
}
// static
ContentSerializedNavigationDriver*
ContentSerializedNavigationDriver::GetInstance() {
return Singleton<ContentSerializedNavigationDriver,
LeakySingletonTraits<ContentSerializedNavigationDriver>>::get();
}
ContentSerializedNavigationDriver::ContentSerializedNavigationDriver() {
}
ContentSerializedNavigationDriver::~ContentSerializedNavigationDriver() {
}
int ContentSerializedNavigationDriver::GetDefaultReferrerPolicy() const {
return blink::WebReferrerPolicyDefault;
}
bool ContentSerializedNavigationDriver::MapReferrerPolicyToOldValues(
int referrer_policy,
int* mapped_referrer_policy) const {
switch (referrer_policy) {
case blink::WebReferrerPolicyAlways:
case blink::WebReferrerPolicyDefault:
// "always" and "default" are the same value in all versions.
*mapped_referrer_policy = referrer_policy;
return true;
case blink::WebReferrerPolicyOrigin:
// "origin" exists in the old encoding.
*mapped_referrer_policy = kObsoleteReferrerPolicyOrigin;
return true;
default:
// Everything else is mapped to never.
*mapped_referrer_policy = kObsoleteReferrerPolicyNever;
return false;
}
}
bool ContentSerializedNavigationDriver::MapReferrerPolicyToNewValues(
int referrer_policy,
int* mapped_referrer_policy) const {
switch (referrer_policy) {
case kObsoleteReferrerPolicyAlways:
case kObsoleteReferrerPolicyDefault:
// "always" and "default" are the same value in all versions.
*mapped_referrer_policy = referrer_policy;
return true;
default:
// Since we don't know what encoding was used, we map the rest to "never".
*mapped_referrer_policy = blink::WebReferrerPolicyNever;
return false;
}
}
std::string
ContentSerializedNavigationDriver::GetSanitizedPageStateForPickle(
const SerializedNavigationEntry* navigation) const {
if (!navigation->has_post_data_) {
return navigation->encoded_page_state_;
}
content::PageState page_state =
content::PageState::CreateFromEncodedData(
navigation->encoded_page_state_);
return page_state.RemovePasswordData().ToEncodedData();
}
void ContentSerializedNavigationDriver::Sanitize(
SerializedNavigationEntry* navigation) const {
content::Referrer old_referrer(
navigation->referrer_url_,
static_cast<blink::WebReferrerPolicy>(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) {
navigation->referrer_url_ = GURL();
navigation->referrer_policy_ = GetDefaultReferrerPolicy();
navigation->encoded_page_state_ =
StripReferrerFromPageState(navigation->encoded_page_state_);
}
}
std::string ContentSerializedNavigationDriver::StripReferrerFromPageState(
const std::string& page_state) const {
return content::PageState::CreateFromEncodedData(page_state)
.RemoveReferrer()
.ToEncodedData();
}
} // namespace sessions
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