RosterPacketProvider.java

  1. /**
  2.  *
  3.  * Copyright © 2003-2007 Jive Software, 2014-2019 Florian Schmaus
  4.  *
  5.  * Licensed under the Apache License, Version 2.0 (the "License");
  6.  * you may not use this file except in compliance with the License.
  7.  * You may obtain a copy of the License at
  8.  *
  9.  *     http://www.apache.org/licenses/LICENSE-2.0
  10.  *
  11.  * Unless required by applicable law or agreed to in writing, software
  12.  * distributed under the License is distributed on an "AS IS" BASIS,
  13.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14.  * See the License for the specific language governing permissions and
  15.  * limitations under the License.
  16.  */
  17. package org.jivesoftware.smack.roster.provider;

  18. import java.io.IOException;

  19. import org.jivesoftware.smack.packet.IQ;
  20. import org.jivesoftware.smack.packet.IqData;
  21. import org.jivesoftware.smack.packet.XmlEnvironment;
  22. import org.jivesoftware.smack.provider.IqProvider;
  23. import org.jivesoftware.smack.roster.packet.RosterPacket;
  24. import org.jivesoftware.smack.util.ParserUtils;
  25. import org.jivesoftware.smack.xml.XmlPullParser;
  26. import org.jivesoftware.smack.xml.XmlPullParserException;

  27. import org.jxmpp.jid.BareJid;
  28. import org.jxmpp.jid.impl.JidCreate;

  29. public class RosterPacketProvider extends IqProvider<RosterPacket> {

  30.     public static final RosterPacketProvider INSTANCE = new RosterPacketProvider();

  31.     @Override
  32.     public RosterPacket parse(XmlPullParser parser, int initialDepth, IqData iqData, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException {
  33.         RosterPacket roster = new RosterPacket();
  34.         String version = parser.getAttributeValue("", "ver");
  35.         roster.setVersion(version);

  36.         outerloop: while (true) {
  37.             XmlPullParser.Event eventType = parser.next();
  38.             switch (eventType) {
  39.             case START_ELEMENT:
  40.                 String startTag = parser.getName();
  41.                 switch (startTag) {
  42.                 case "item":
  43.                     RosterPacket.Item item = parseItem(parser);
  44.                     roster.addRosterItem(item);
  45.                     break;
  46.                 }
  47.                 break;
  48.             case END_ELEMENT:
  49.                 String endTag = parser.getName();
  50.                 switch (endTag) {
  51.                 case IQ.QUERY_ELEMENT:
  52.                     if (parser.getDepth() == initialDepth) {
  53.                         break outerloop;
  54.                     }
  55.                 }
  56.                 break;
  57.             default:
  58.                 // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
  59.                 break;
  60.             }
  61.         }
  62.         return roster;
  63.     }

  64.     public static RosterPacket.Item parseItem(XmlPullParser parser) throws XmlPullParserException, IOException {
  65.         ParserUtils.assertAtStartTag(parser, RosterPacket.Item.ELEMENT);
  66.         final int initialDepth = parser.getDepth();
  67.         String jidString = parser.getAttributeValue("", "jid");
  68.         String itemName = parser.getAttributeValue("", "name");
  69.         BareJid jid = JidCreate.bareFrom(jidString);

  70.         // Create item.
  71.         RosterPacket.Item item = new RosterPacket.Item(jid, itemName);
  72.         // Set status.
  73.         String ask = parser.getAttributeValue("", "ask");
  74.         item.setSubscriptionPending("subscribe".equals(ask));
  75.         // Set type.
  76.         String subscription = parser.getAttributeValue("", "subscription");
  77.         RosterPacket.ItemType type = RosterPacket.ItemType.fromString(subscription);
  78.         item.setItemType(type);
  79.         // Set approval status.
  80.         boolean approved = ParserUtils.getBooleanAttribute(parser, "approved", false);
  81.         item.setApproved(approved);

  82.         outerloop: while (true) {
  83.             XmlPullParser.Event eventType = parser.next();
  84.             switch (eventType) {
  85.             case START_ELEMENT:
  86.                 String name = parser.getName();
  87.                 switch (name) {
  88.                 case RosterPacket.Item.GROUP:
  89.                     final String groupName = parser.nextText();
  90.                     if (groupName != null && groupName.trim().length() > 0) {
  91.                         item.addGroupName(groupName);
  92.                     }
  93.                     break;
  94.                 }
  95.                 break;
  96.             case END_ELEMENT:
  97.                 if (parser.getDepth() == initialDepth) {
  98.                     break outerloop;
  99.                 }
  100.                 break;
  101.             default:
  102.                 // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
  103.                 break;
  104.             }
  105.         }
  106.         ParserUtils.assertAtEndTag(parser);
  107.         assert item != null;
  108.         return item;
  109.     }
  110. }