1/*
 2 * Copyright (c) 2017, Daniel Gultsch All rights reserved.
 3 *
 4 * Redistribution and use in source and binary forms, with or without modification,
 5 * are permitted provided that the following conditions are met:
 6 *
 7 * 1. Redistributions of source code must retain the above copyright notice, this
 8 * list of conditions and the following disclaimer.
 9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation and/or
12 * other materials provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors
15 * may be used to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30package eu.siacs.conversations.utils;
31
32
33import java.util.Arrays;
34import java.util.List;
35import java.util.Locale;
36
37import eu.siacs.conversations.xmpp.InvalidJid;
38import eu.siacs.conversations.xmpp.Jid;
39
40public class JidHelper {
41
42    private static List<String> LOCAL_PART_BLACKLIST = Arrays.asList("xmpp", "jabber", "me");
43
44    public static String localPartOrFallback(Jid jid) {
45        if (LOCAL_PART_BLACKLIST.contains(jid.getLocal().toLowerCase(Locale.ENGLISH))) {
46            final String domain = jid.getDomain().toEscapedString();
47            final int index = domain.indexOf('.');
48            return index > 1 ? domain.substring(0, index) : domain;
49        } else {
50            return jid.getLocal();
51        }
52    }
53
54    public static Jid parseOrFallbackToInvalid(String jid) {
55        try {
56            return Jid.of(jid);
57        } catch (IllegalArgumentException e) {
58            return InvalidJid.of(jid, true);
59        }
60    }
61
62}