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/*
* Juick
* Copyright (C) 2008-2013, Ugnich Anton
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.server.xmpp.router;
import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
/**
*
* @author Ugnich Anton
*/
public class StreamFeatures {
public static final int NOTAVAILABLE = -1;
public static final int AVAILABLE = 0;
public static final int REQUIRED = 1;
public int STARTTLS = NOTAVAILABLE;
public int ZLIB = NOTAVAILABLE;
public int PLAIN = NOTAVAILABLE;
public int DIGEST_MD5 = NOTAVAILABLE;
public int REGISTER = NOTAVAILABLE;
public int EXTERNAL = NOTAVAILABLE;
public static StreamFeatures parse(final XmlPullParser parser) throws XmlPullParserException, IOException {
StreamFeatures features = new StreamFeatures();
final int initial = parser.getDepth();
while (true) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG && parser.getDepth() == initial + 1) {
final String tag = parser.getName();
final String xmlns = parser.getNamespace();
if (tag.equals("starttls") && xmlns != null && xmlns.equals("urn:ietf:params:xml:ns:xmpp-tls")) {
features.STARTTLS = AVAILABLE;
while (parser.next() == XmlPullParser.START_TAG) {
if (parser.getName().equals("required")) {
features.STARTTLS = REQUIRED;
} else {
XmlUtils.skip(parser);
}
}
} else if (tag.equals("compression") && xmlns != null && xmlns.equals("http://jabber.org/features/compress")) {
while (parser.next() == XmlPullParser.START_TAG) {
if (parser.getName().equals("method")) {
final String method = XmlUtils.getTagText(parser).toUpperCase();
if (method.equals("ZLIB")) {
features.ZLIB = AVAILABLE;
}
} else {
XmlUtils.skip(parser);
}
}
} else if (tag.equals("mechanisms") && xmlns != null && xmlns.equals("urn:ietf:params:xml:ns:xmpp-sasl")) {
while (parser.next() == XmlPullParser.START_TAG) {
if (parser.getName().equals("mechanism")) {
final String mechanism = XmlUtils.getTagText(parser).toUpperCase();
if (mechanism.equals("PLAIN")) {
features.PLAIN = AVAILABLE;
} else if (mechanism.equals("DIGEST-MD5")) {
features.DIGEST_MD5 = AVAILABLE;
} else if (mechanism.equals("EXTERNAL")) {
features.EXTERNAL = AVAILABLE;
}
} else {
XmlUtils.skip(parser);
}
}
} else if (tag.equals("register") && xmlns != null && xmlns.equals("http://jabber.org/features/iq-register")) {
features.REGISTER = AVAILABLE;
XmlUtils.skip(parser);
} else {
XmlUtils.skip(parser);
}
} else if (eventType == XmlPullParser.END_TAG && parser.getDepth() == initial) {
break;
}
}
return features;
}
}
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