/*
* Copyright 2011 NCHOVY
*
* 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.krakenapps.iptables.match;
import java.util.Scanner;
public class IcmpMatchExtension implements MatchExtension {
@Override
public String getName() {
return "icmp";
}
@Override
public MatchParseResult parse(String expr) {
return parse(expr, 0, expr.length());
}
@Override
public MatchParseResult parse(String expr, int begin, int end) {
Scanner scanner = new Scanner(expr.substring(begin, end));
String token = scanner.next();
Integer type = null;
if (token.equals("type"))
type = Integer.valueOf(scanner.next());
int last = scanner.match().end();
Integer code = null;
if (scanner.hasNext()) {
token = scanner.next();
last = scanner.match().end();
if (token.equals("code"))
code = Integer.valueOf(scanner.next());
}
return new MatchParseResult(new IcmpMatchOption(type, code), last + 1);
}
}