// ========================================================================
// Copyright 2008-2009 NEXCOM Systems
// ------------------------------------------------------------------------
// 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.cipango.sipapp.rules.request;
import javax.servlet.sip.SipURI;
import javax.servlet.sip.URI;
public class Port implements Extractor
{
public Port(String token)
{
if (!token.equals("uri"))
throw new IllegalArgumentException("Invalid expression: port after " + token);
}
public Object extract(Object input)
{
URI uri = (URI) input;
if (uri.isSipURI())
{
SipURI sipuri = (SipURI) uri;
int port = sipuri.getPort();
if (port < 0)
{
String scheme = sipuri.getScheme();
if (scheme.equals("sips"))
return "5061";
else
return "5060";
}
else
{
return Integer.toString(port);
}
}
else
{
return null;
}
}
}