001/*
002 *
003 * Copyright 2018-2019 Paul Schaub.
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.ox.provider;
018
019import java.io.IOException;
020import java.text.ParseException;
021import java.util.Date;
022
023import org.jivesoftware.smack.packet.XmlEnvironment;
024import org.jivesoftware.smack.provider.ExtensionElementProvider;
025import org.jivesoftware.smack.util.ParserUtils;
026import org.jivesoftware.smack.xml.XmlPullParser;
027import org.jivesoftware.smack.xml.XmlPullParserException;
028
029import org.jivesoftware.smackx.ox.element.PubkeyElement;
030
031import org.jxmpp.JxmppContext;
032
033/**
034 * {@link ExtensionElementProvider} implementation for the {@link PubkeyElement}.
035 */
036public class PubkeyElementProvider extends ExtensionElementProvider<PubkeyElement> {
037
038    public static final PubkeyElementProvider INSTANCE = new PubkeyElementProvider();
039
040    @Override
041    public PubkeyElement parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment, JxmppContext jxmppContext)
042                    throws XmlPullParserException, IOException, ParseException {
043        String dateString = parser.getAttributeValue(null, PubkeyElement.ATTR_DATE);
044        Date date = ParserUtils.getDateFromOptionalXep82String(dateString);
045        while (true) {
046            XmlPullParser.Event tag = parser.next();
047            if (tag == XmlPullParser.Event.START_ELEMENT) {
048                String name = parser.getName();
049                switch (name) {
050                    case PubkeyElement.PubkeyDataElement.ELEMENT:
051                        String base64EncodedOpenPgpPubKey = parser.nextText();
052                        PubkeyElement.PubkeyDataElement pubkeyDataElement = new PubkeyElement.PubkeyDataElement(base64EncodedOpenPgpPubKey);
053                        return new PubkeyElement(pubkeyDataElement, date);
054                }
055            }
056        }
057    }
058}