001/**
002 *
003 * Copyright © 2014-2018 Florian Schmaus
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.smack.sm.provider;
018
019import java.io.IOException;
020import java.util.ArrayList;
021import java.util.List;
022
023import org.jivesoftware.smack.packet.AbstractTextElement;
024import org.jivesoftware.smack.packet.StanzaError;
025import org.jivesoftware.smack.packet.StanzaErrorTextElement;
026import org.jivesoftware.smack.sm.packet.StreamManagement.AckAnswer;
027import org.jivesoftware.smack.sm.packet.StreamManagement.AckRequest;
028import org.jivesoftware.smack.sm.packet.StreamManagement.Enabled;
029import org.jivesoftware.smack.sm.packet.StreamManagement.Failed;
030import org.jivesoftware.smack.sm.packet.StreamManagement.Resumed;
031import org.jivesoftware.smack.util.ParserUtils;
032import org.jivesoftware.smack.xml.XmlPullParser;
033import org.jivesoftware.smack.xml.XmlPullParserException;
034
035public class ParseStreamManagement {
036
037    public static Enabled enabled(XmlPullParser parser) throws XmlPullParserException, IOException {
038        ParserUtils.assertAtStartTag(parser);
039        boolean resume = ParserUtils.getBooleanAttribute(parser, "resume", false);
040        String id = parser.getAttributeValue("", "id");
041        String location = parser.getAttributeValue("", "location");
042        int max = ParserUtils.getIntegerAttribute(parser, "max", -1);
043        parser.next();
044        ParserUtils.assertAtEndTag(parser);
045        return new Enabled(id, resume, location, max);
046    }
047
048    public static Failed failed(XmlPullParser parser) throws XmlPullParserException, IOException {
049        ParserUtils.assertAtStartTag(parser);
050        String name;
051        StanzaError.Condition condition = null;
052        List<StanzaErrorTextElement> textElements = new ArrayList<>(4);
053        outerloop:
054        while (true) {
055            XmlPullParser.Event event = parser.next();
056            switch (event) {
057            case START_ELEMENT:
058                name = parser.getName();
059                String namespace = parser.getNamespace();
060                if (StanzaError.ERROR_CONDITION_AND_TEXT_NAMESPACE.equals(namespace)) {
061                    if (name.equals(AbstractTextElement.ELEMENT)) {
062                        String lang = ParserUtils.getXmlLang(parser);
063                        String text = parser.nextText();
064                        StanzaErrorTextElement stanzaErrorTextElement = new StanzaErrorTextElement(text, lang);
065                        textElements.add(stanzaErrorTextElement);
066                    } else {
067                        condition = StanzaError.Condition.fromString(name);
068                    }
069                }
070                break;
071            case END_ELEMENT:
072                name = parser.getName();
073                if (Failed.ELEMENT.equals(name)) {
074                    break outerloop;
075                }
076                break;
077            default:
078                // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
079                break;
080            }
081        }
082        ParserUtils.assertAtEndTag(parser);
083        return new Failed(condition, textElements);
084    }
085
086    public static Resumed resumed(XmlPullParser parser) throws XmlPullParserException, IOException {
087        ParserUtils.assertAtStartTag(parser);
088        long h = ParserUtils.getLongAttribute(parser, "h");
089        String previd = parser.getAttributeValue("", "previd");
090        parser.next();
091        ParserUtils.assertAtEndTag(parser);
092        return new Resumed(h, previd);
093    }
094
095    public static AckAnswer ackAnswer(XmlPullParser parser) throws XmlPullParserException, IOException {
096        ParserUtils.assertAtStartTag(parser);
097        long h = ParserUtils.getLongAttribute(parser, "h");
098        parser.next();
099        ParserUtils.assertAtEndTag(parser);
100        return new AckAnswer(h);
101    }
102
103    public static AckRequest ackRequest(XmlPullParser parser) throws XmlPullParserException, IOException {
104        ParserUtils.assertAtStartTag(parser);
105        parser.next();
106        ParserUtils.assertAtEndTag(parser);
107        return AckRequest.INSTANCE;
108    }
109}