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/*
* Copyright (c) 2008, 2009, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/platform/link_hash.h"
#include <string_view>
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/web_security_origin.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/text/string_utf8_adaptor.h"
#include "url/url_util.h"
namespace blink {
static bool ResolveRelative(const KURL& base,
const String& relative,
url::RawCanonOutput<2048>* buffer) {
// We use these low-level GURL functions to avoid converting back and forth
// from UTF-8 unnecessarily.
url::Parsed parsed;
StringUTF8Adaptor base_utf8(base.GetString());
if (relative.Is8Bit()) {
StringUTF8Adaptor relative_utf8(relative);
return url::ResolveRelative(base_utf8.data(), base_utf8.size(),
base.GetParsed(), relative_utf8.data(),
relative_utf8.size(), nullptr, buffer, &parsed);
}
return url::ResolveRelative(base_utf8.data(), base_utf8.size(),
base.GetParsed(),
UNSAFE_TODO(relative.Characters16()),
relative.length(), nullptr, buffer, &parsed);
}
LinkHash VisitedLinkHash(const KURL& base, const AtomicString& relative) {
if (relative.IsNull())
return 0;
url::RawCanonOutput<2048> buffer;
if (!ResolveRelative(base, relative.GetString(), &buffer))
return 0;
return Platform::Current()->VisitedLinkHash(
std::string_view(buffer.data(), buffer.length()));
}
LinkHash PartitionedVisitedLinkFingerprint(
const KURL& base_link_url,
const AtomicString& relative_link_url,
const net::SchemefulSite& top_level_site,
const SecurityOrigin* frame_origin) {
// If there is no relative URL, we return the null-fingerprint.
if (relative_link_url.IsNull()) {
return 0;
}
url::RawCanonOutput<2048> buffer;
// Resolving the base and relative parts of the link_url into a single
// std::string_view via the URL Canonicalizer. If we are unable to resolve the
// two parts of the URL, we return the null-fingerprint.
if (!ResolveRelative(base_link_url, relative_link_url.GetString(), &buffer)) {
return 0;
}
std::string_view link_url = std::string_view(buffer.data(), buffer.length());
return Platform::Current()->PartitionedVisitedLinkFingerprint(
link_url, top_level_site, WebSecurityOrigin(frame_origin));
}
} // namespace blink
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