Remove Blink's DatabaseIdentifier implementation

third_party/WebKit/Source/platform/weborigin/DatabaseIdentifier.cpp

-/*
- * Copyright (C) 2007 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.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE 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 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 "platform/weborigin/DatabaseIdentifier.h"
-
-#include "platform/weborigin/KURL.h"
-#include "platform/weborigin/KnownPorts.h"
-#include "platform/weborigin/SchemeRegistry.h"
-#include "platform/weborigin/SecurityOriginCache.h"
-#include "platform/weborigin/SecurityPolicy.h"
-#include "wtf/HexNumber.h"
-#include "wtf/StdLibExtras.h"
-#include "wtf/text/StringBuilder.h"
-
-namespace blink {
-
-namespace {
-
-String escapeIPv6Hostname(const String& hostname)
-{
-    // Shortest IPv6 hostname would be "[::1]".
-    if (hostname.length() < 5 || hostname[0] != '[' || hostname[hostname.length() - 1] != ']')
-        return hostname;
-
-    // Should be canonicalized before it gets this far.
-    // i.e. "[::ffff:8190:3426]" not "[::FFFF:129.144.52.38]"
-    ASSERT(!hostname.contains('.'));
-    ASSERT(hostname == hostname.lower());
-
-    String copy = hostname;
-    copy.replace(':', '_');
-    return copy;
-}
-
-String unescapeIPv6Hostname(const String& hostname)
-{
-    if (hostname.length() < 5 || hostname[0] != '[' || hostname[hostname.length() - 1] != ']')
-        return hostname;
-
-    String copy = hostname;
-    copy.replace('_', ':');
-    return copy;
-}
-
-} // namespace
-
-const int maxAllowedPort = 65535;
-
-static const char separatorCharacter = '_';
-
-PassRefPtr<SecurityOrigin> createSecurityOriginFromDatabaseIdentifier(const String& databaseIdentifier)
-{
-    if (!databaseIdentifier.containsOnlyASCII())
-        return SecurityOrigin::createUnique();
-
-    // Match restrictions in storage/common/database/database_identifier.cc
-    // TODO(jsbell): Eliminate duplicate implementations.
-    if (databaseIdentifier.contains(".."))
-        return SecurityOrigin::createUnique();
-    char forbidden[] = {'\\', '/', ':', '\0'};
-    for (auto c : forbidden) {
-        if (databaseIdentifier.contains(c))
-            return SecurityOrigin::createUnique();
-    }
-
-    // Make sure there's a first separator
-    size_t separator1 = databaseIdentifier.find(separatorCharacter);
-    if (separator1 == kNotFound)
-        return SecurityOrigin::createUnique();
-
-    // Make sure there's a second separator
-    size_t separator2 = databaseIdentifier.reverseFind(separatorCharacter);
-    if (separator2 == kNotFound)
-        return SecurityOrigin::createUnique();
-
-    // 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 SecurityOrigin::createUnique();
-
-    // Make sure the port section is a valid port number or doesn't exist
-    bool portOkay;
-    int port = databaseIdentifier.right(databaseIdentifier.length() - separator2 - 1).toInt(&portOkay);
-    bool portAbsent = (separator2 == databaseIdentifier.length() - 1);
-    if (!(portOkay || portAbsent))
-        return SecurityOrigin::createUnique();
-
-    if (port < 0 || port > maxAllowedPort)
-        return SecurityOrigin::createUnique();
-
-    // Split out the 3 sections of data
-    String protocol = databaseIdentifier.substring(0, separator1);
-    String host = unescapeIPv6Hostname(databaseIdentifier.substring(separator1 + 1, separator2 - separator1 - 1));
-
-    // Make sure the components match their canonical representation so we are sure we're round tripping correctly.
-    KURL url(KURL(), protocol + "://" + host + ":" + String::number(port) + "/");
-    if (!url.isValid() || url.protocol() != protocol || url.host() != host)
-        return SecurityOrigin::createUnique();
-
-    return SecurityOrigin::create(url);
-}
-
-String createDatabaseIdentifierFromSecurityOrigin(const SecurityOrigin* securityOrigin)
-{
-    String separatorString(&separatorCharacter, 1);
-    return securityOrigin->protocol() + separatorString + escapeIPv6Hostname(securityOrigin->host()) + separatorString + String::number(securityOrigin->port());
-}
-
-} // namespace blink