[NET-651] Ip Range Check with SubnetUtils provides incorrect answer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Assignee: Unassigned
• Reporter: sathyam
• Created: 19/Jan/18 21:47
• Updated: 22/Jan/18 15:19
• Resolved: 22/Jan/18 15:19

Description

private static void checkIp() {
 System.out.println(verifyCommonsNet("192.168.0.1", "192.168.0.1/32"));
 System.out.println(verifySpringSecurity("192.168.0.1", "192.168.0.1/32"));
}

private static boolean verifyCommonsNet(String ip, String subnet) {
 SubnetUtils.SubnetInfo subnetInfo = (new SubnetUtils(subnet)).getInfo();
 return subnetInfo.isInRange(ip);
}

private static boolean verifySpringSecurity(String ip, String subnet) {
 IpAddressMatcher ipAddressMatcher = new IpAddressMatcher(subnet);
 return ipAddressMatcher.matches(ip);
}

 

Tried to check Ip range functionality with Subnet Utils. But I get an incorrect answer when using mask of 32. The same CIDR with Spring security provides the right answer. checking 192.168.0.1 against 192.168.0.1/32 should return true.