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/*
* Copyright (C) 2011, 2015, 2023 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#include "SecurityOriginData.h"
#include "BlobURL.h"
#include "Document.h"
#include "LegacySchemeRegistry.h"
#include "LocalFrame.h"
#include "SecurityOrigin.h"
#include <wtf/FileSystem.h>
#include <wtf/text/CString.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/StringToIntegerConversion.h>
namespace WebCore {
String SecurityOriginData::toString() const
{
auto protocol = this->protocol();
if (protocol == "file"_s)
return "file://"_s;
auto host = this->host();
if (protocol.isEmpty() && host.isEmpty())
return { };
auto port = this->port();
if (!port)
return makeString(protocol, "://"_s, host);
return makeString(protocol, "://"_s, host, ':', static_cast<uint32_t>(*port));
}
URL SecurityOriginData::toURL() const
{
return URL { toString() };
}
SecurityOriginData SecurityOriginData::fromFrame(LocalFrame* frame)
{
if (!frame)
return SecurityOriginData { };
RefPtr document = frame->document();
if (!document)
return SecurityOriginData { };
return document->securityOrigin().data();
}
SecurityOriginData SecurityOriginData::fromURL(const URL& url)
{
if (shouldTreatAsOpaqueOrigin(url))
return createOpaque();
return fromURLWithoutStrictOpaqueness(url);
}
SecurityOriginData SecurityOriginData::fromURLWithoutStrictOpaqueness(const URL& url)
{
if (url.isNull())
return SecurityOriginData { };
if (url.protocol().isEmpty() && url.host().isEmpty() && !url.port())
return createOpaque();
return SecurityOriginData {
url.protocol().isNull() ? emptyString() : url.protocol().convertToASCIILowercase()
, url.host().isNull() ? emptyString() : url.host().convertToASCIILowercase()
, url.port()
};
}
Ref<SecurityOrigin> SecurityOriginData::securityOrigin() const
{
return SecurityOrigin::create(isolatedCopy());
}
static const char separatorCharacter = '_';
String SecurityOriginData::databaseIdentifier() const
{
// Historically, we've used the following (somewhat nonsensical) string
// for the databaseIdentifier of local files. We used to compute this
// string because of a bug in how we handled the scheme for file URLs.
// Now that we've fixed that bug, we produce this string for compatibility
// with existing persistent state.
auto protocol = this->protocol();
if (equalLettersIgnoringASCIICase(protocol, "file"_s))
return "file__0"_s;
return makeString(protocol, separatorCharacter, FileSystem::encodeForFileName(host()), separatorCharacter, port().value_or(0));
}
String SecurityOriginData::optionalDatabaseIdentifier() const
{
auto url = toURL();
if (!url.isValid())
return { };
return databaseIdentifier();
}
std::optional<SecurityOriginData> SecurityOriginData::fromDatabaseIdentifier(StringView databaseIdentifier)
{
// Make sure there's a first separator
size_t separator1 = databaseIdentifier.find(separatorCharacter);
if (separator1 == notFound)
return std::nullopt;
// Make sure there's a second separator
size_t separator2 = databaseIdentifier.reverseFind(separatorCharacter);
if (separator2 == notFound)
return std::nullopt;
// Ensure there were at least 2 separator characters. Some hostnames on intranets have
// underscores in them, so we'll assume that any additional underscores are part of the host.
if (separator1 == separator2)
return std::nullopt;
// Make sure the port section is a valid port number or doesn't exist.
auto portLength = databaseIdentifier.length() - separator2 - 1;
auto port = parseIntegerAllowingTrailingJunk<uint16_t>(databaseIdentifier.right(portLength));
// Nothing after the colon is fine. Failure to parse after the colon is not.
if (!port && portLength)
return std::nullopt;
// Treat port 0 like there is was no port specified.
if (port && !*port)
port = std::nullopt;
auto protocol = databaseIdentifier.left(separator1);
auto host = databaseIdentifier.substring(separator1 + 1, separator2 - separator1 - 1);
return SecurityOriginData { protocol.toString(), host.toString(), port };
}
SecurityOriginData SecurityOriginData::isolatedCopy() const &
{
return SecurityOriginData { crossThreadCopy(m_data) };
}
SecurityOriginData SecurityOriginData::isolatedCopy() &&
{
return SecurityOriginData { crossThreadCopy(WTFMove(m_data)) };
}
bool operator==(const SecurityOriginData& a, const SecurityOriginData& b)
{
if (&a == &b)
return true;
return a.data() == b.data();
}
static bool schemeRequiresHost(const URL& url)
{
// We expect URLs with these schemes to have authority components. If the
// URL lacks an authority component, we get concerned and mark the origin
// as opaque.
return url.protocolIsInHTTPFamily() || url.protocolIs("ftp"_s);
}
bool SecurityOriginData::shouldTreatAsOpaqueOrigin(const URL& url)
{
if (!url.isValid())
return true;
auto originURL = url.protocolIsBlob() ? BlobURL::getOriginURL(url) : url;
if (!originURL.isValid())
return true;
// For edge case URLs that were probably misparsed, make sure that the origin is opaque.
// This is an additional safety net against bugs in URL parsing, and for network back-ends that parse URLs differently,
// and could misinterpret another component for hostname.
if (schemeRequiresHost(originURL) && originURL.host().isEmpty())
return true;
if (LegacySchemeRegistry::shouldTreatURLSchemeAsNoAccess(originURL.protocol()))
return true;
// https://url.spec.whatwg.org/#origin with some additions
if (url.hasSpecialScheme()
#if PLATFORM(COCOA)
|| !linkedOnOrAfterSDKWithBehavior(SDKAlignedBehavior::NullOriginForNonSpecialSchemedURLs)
|| url.protocolIs("applewebdata"_s)
|| url.protocolIs("x-apple-ql-id"_s)
|| url.protocolIs("x-apple-ql-id2"_s)
|| url.protocolIs("x-apple-ql-magic"_s)
#endif
#if PLATFORM(GTK) || PLATFORM(WPE)
|| url.protocolIs("resource"_s)
#endif
#if ENABLE(PDFJS)
|| url.protocolIs("webkit-pdfjs-viewer"_s)
#endif
|| url.protocolIsBlob())
return false;
// FIXME: we ought to assert we're in WebKitLegacy or a web content process as per 263652@main,
// except that assert gets hit on certain tests.
return !LegacySchemeRegistry::schemeIsHandledBySchemeHandler(url.protocol());
}
} // namespace WebCore
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