/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2008-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.opennmsd;
import java.net.InetAddress;
public abstract class IpAddressUtils {
/**
* Converts the internet address to a long value so that it can be compared
* using simple opertions. The address is converted in network byte order
* (big endin) and allows for comparisions like <, >, <=, >=,
* ==, and !=.
*
* @param addr
* The address to convert to a long
*
* @return The address as a long value.
*
*/
protected static long toLong(InetAddress addr) {
byte[] baddr = addr.getAddress();
long result = ((long) baddr[0] & 0xffL) << 24 | ((long) baddr[1] & 0xffL) << 16 | ((long) baddr[2] & 0xffL) << 8 | ((long) baddr[3] & 0xffL);
return result;
}
public static boolean verifyIpMatch(String hostAddress, String ipMatch) {
String hostOctets[] = hostAddress.split("\\.", 0);
String matchOctets[] = ipMatch.split("\\.", 0);
for (int i = 0; i < 4; i++) {
if (!matchNumericListOrRange(hostOctets[i], matchOctets[i]))
return false;
}
return true;
}
/**
* Use this method to match ranges, lists, and specific number strings
* such as:
* "200-300" or "200,300,501-700"
* "*" matches any
* This method is commonly used for matching IP octets or ports
*
* @param value
* @param patterns
* @return
*/
public static boolean matchNumericListOrRange(String value, String patterns) {
String patternList[] = patterns.split(",", 0);
for (int i = 0; i < patternList.length; i++) {
if (matchRange(value, patternList[i]))
return true;
}
return false;
}
/**
* Helper method in support of matchNumericListOrRange
* @param value
* @param pattern
* @return
*/
public static boolean matchRange(String value, String pattern) {
int dashCount = countChar('-', pattern);
if ("*".equals(pattern))
return true;
else if (dashCount == 0)
return value.equals(pattern);
else if (dashCount > 1)
return false;
else if (dashCount == 1) {
String ar[] = pattern.split("-");
int rangeBegin = Integer.parseInt(ar[0]);
int rangeEnd = Integer.parseInt(ar[1]);
int ip = Integer.parseInt(value);
return (ip >= rangeBegin && ip <= rangeEnd);
}
return false;
}
public static int countChar(char charIn, String stingIn) {
int charCount = 0;
int charIndex = 0;
for (int i=0; i<stingIn.length(); i++) {
charIndex = stingIn.indexOf(charIn, i);
if (charIndex != -1) {
charCount++;
i = charIndex +1;
}
}
return charCount;
}
}