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// Copyright 2021 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 "third_party/blink/renderer/core/frame/history_util.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
namespace blink {
namespace {
bool EqualIgnoringPathQueryAndFragment(const KURL& a, const KURL& b) {
return StringView(a.GetString(), 0, a.PathStart()) ==
StringView(b.GetString(), 0, b.PathStart());
}
bool EqualIgnoringQueryAndFragment(const KURL& a, const KURL& b) {
return StringView(a.GetString(), 0, a.PathEnd()) ==
StringView(b.GetString(), 0, b.PathEnd());
}
} // namespace
bool CanChangeToUrlForHistoryApi(const KURL& url,
const SecurityOrigin* document_origin,
const KURL& document_url) {
if (!url.IsValid())
return false;
if (document_origin->IsGrantedUniversalAccess())
return true;
// We allow sandboxed documents, `data:`/`file:` URLs, etc. to use
// 'pushState'/'replaceState' to modify the URL fragment: see
// https://crbug.com/528681 for the compatibility concerns.
if (document_origin->IsOpaque() || document_origin->IsLocal())
return EqualIgnoringQueryAndFragment(url, document_url);
if (!EqualIgnoringPathQueryAndFragment(url, document_url))
return false;
scoped_refptr<const SecurityOrigin> requested_origin =
SecurityOrigin::Create(url);
if (requested_origin->IsOpaque() ||
!requested_origin->IsSameOriginWith(document_origin)) {
return false;
}
return true;
}
} // namespace blink
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