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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.network;
import com.google.common.net.InetAddresses;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Strong type IPv4 and IPv6 with common executables for ip related commands.
*
* @author smorgrav
*/
public enum IPVersion {
IPv6(6, "ip6tables", "ip -6", "ipv6-icmp", 128, "icmp6-port-unreachable", "ip6tables-restore", "fe80::/10"),
IPv4(4, "iptables", "ip", "icmp", 32, "icmp-port-unreachable", "iptables-restore", "169.254.0.0/16");
private static final Pattern cidrNotationPattern = Pattern.compile("/\\d+$");
IPVersion(int version, String iptablesCmd, String ipCmd,
String icmpProtocol, int size, String icmpPortUnreachable,
String iptablesRestore, String linkLocalCidr) {
this.version = version;
this.ipCmd = ipCmd;
this.iptablesCmd = iptablesCmd;
this.icmpProtocol = icmpProtocol;
this.size = size;
this.icmpPortUnreachable = icmpPortUnreachable;
this.iptablesRestore = iptablesRestore;
this.linkLocalCidr = linkLocalCidr;
}
private final int version;
private final String iptablesCmd;
private final String ipCmd;
private final String icmpProtocol;
private final int size;
private final String icmpPortUnreachable;
private final String iptablesRestore;
private final String linkLocalCidr;
/** The ID of the IP version, either IPv4 or IPv6. */
public String id() { return "IPv" + version; }
/** The IP version, either 4 or 6 */
public int version() { return version; }
public String versionString() { return String.valueOf(version); }
public String iptablesCmd() { return iptablesCmd; }
public String iptablesRestore() { return iptablesRestore;}
public String ipCmd() { return ipCmd; }
public String icmpProtocol() { return icmpProtocol; }
public String singleHostCidr() { return "/" + size; }
public String icmpPortUnreachable() { return icmpPortUnreachable; }
/** The address size (in bits) of the IP version: 32 or 128. */
public int addressSize() { return size; }
/** Both IPv4 and IPv6 have exactly one link-local address space: 169.254.0.0/16 or fe80::/10. */
public String linkLocalAddressCidr() { return linkLocalCidr; }
public boolean match(InetAddress address) {
return this == IPVersion.get(address);
}
public boolean match(String address) {
return this == IPVersion.get(address);
}
public static IPVersion get(String address) {
Matcher matcher = cidrNotationPattern.matcher(address);
if (matcher.find()) {
address = matcher.replaceFirst("");
}
return get(InetAddresses.forString(address));
}
public static IPVersion get(InetAddress address) {
return address instanceof Inet4Address ? IPv4 : IPv6;
}
}
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