| /* |
| * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.ssl; |
| |
| import javax.net.ssl.*; |
| import java.util.*; |
| import sun.net.util.IPAddressUtil; |
| |
| /** |
| * A utility class to share the static methods. |
| */ |
| final class Utilities { |
| /** |
| * hex digits |
| */ |
| static final char[] hexDigits = "0123456789ABCDEF".toCharArray(); |
| |
| /** |
| * Puts {@code hostname} into the {@code serverNames} list. |
| * <P> |
| * If the {@code serverNames} does not look like a legal FQDN, it will |
| * not be put into the returned list. |
| * <P> |
| * Note that the returned list does not allow duplicated name type. |
| * |
| * @return a list of {@link SNIServerName} |
| */ |
| static List<SNIServerName> addToSNIServerNameList( |
| List<SNIServerName> serverNames, String hostname) { |
| |
| SNIHostName sniHostName = rawToSNIHostName(hostname); |
| if (sniHostName == null) { |
| return serverNames; |
| } |
| |
| int size = serverNames.size(); |
| List<SNIServerName> sniList = (size != 0) ? |
| new ArrayList<SNIServerName>(serverNames) : |
| new ArrayList<SNIServerName>(1); |
| |
| boolean reset = false; |
| for (int i = 0; i < size; i++) { |
| SNIServerName serverName = sniList.get(i); |
| if (serverName.getType() == StandardConstants.SNI_HOST_NAME) { |
| sniList.set(i, sniHostName); |
| if (Debug.isOn("ssl")) { |
| System.out.println(Thread.currentThread().getName() + |
| ", the previous server name in SNI (" + serverName + |
| ") was replaced with (" + sniHostName + ")"); |
| } |
| reset = true; |
| break; |
| } |
| } |
| |
| if (!reset) { |
| sniList.add(sniHostName); |
| } |
| |
| return Collections.<SNIServerName>unmodifiableList(sniList); |
| } |
| |
| /** |
| * Converts string hostname to {@code SNIHostName}. |
| * <P> |
| * Note that to check whether a hostname is a valid domain name, we cannot |
| * use the hostname resolved from name services. For virtual hosting, |
| * multiple hostnames may be bound to the same IP address, so the hostname |
| * resolved from name services is not always reliable. |
| * |
| * @param hostname |
| * the raw hostname |
| * @return an instance of {@link SNIHostName}, or null if the hostname does |
| * not look like a FQDN |
| */ |
| private static SNIHostName rawToSNIHostName(String hostname) { |
| SNIHostName sniHostName = null; |
| if (hostname != null && hostname.indexOf('.') > 0 && |
| !hostname.endsWith(".") && |
| !IPAddressUtil.isIPv4LiteralAddress(hostname) && |
| !IPAddressUtil.isIPv6LiteralAddress(hostname)) { |
| |
| try { |
| sniHostName = new SNIHostName(hostname); |
| } catch (IllegalArgumentException iae) { |
| // don't bother to handle illegal host_name |
| if (Debug.isOn("ssl")) { |
| System.out.println(Thread.currentThread().getName() + |
| ", \"" + hostname + "\" " + |
| "is not a legal HostName for server name indication"); |
| } |
| } |
| } |
| |
| return sniHostName; |
| } |
| } |