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/*
* Copyright 2009 Jonas Ådahl.
* Copyright 2011-2013 Florian Schmaus
*
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smackx.provider;
import java.io.IOException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smackx.entitycaps.packet.CapsExtension;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
public class CapsExtensionProvider implements PacketExtensionProvider {
private static final int MAX_DEPTH = 10;
public PacketExtension parseExtension(XmlPullParser parser) throws XmlPullParserException, IOException,
XMPPException {
String hash = null;
String version = null;
String node = null;
int depth = 0;
while (true) {
if (parser.getEventType() == XmlPullParser.START_TAG && parser.getName().equalsIgnoreCase("c")) {
hash = parser.getAttributeValue(null, "hash");
version = parser.getAttributeValue(null, "ver");
node = parser.getAttributeValue(null, "node");
}
if (parser.getEventType() == XmlPullParser.END_TAG && parser.getName().equalsIgnoreCase("c")) {
break;
} else {
parser.next();
}
if (depth < MAX_DEPTH) {
depth++;
} else {
throw new XMPPException("Malformed caps element");
}
}
if (hash != null && version != null && node != null) {
return new CapsExtension(node, version, hash);
} else {
throw new XMPPException("Caps elment with missing attributes");
}
}
}
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