| /* |
| * Copyright 2009 Jonas Ã…dahl. |
| * 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"); |
| } |
| } |
| } |