| package org.projectfloodlight.openflow.types; |
| |
| import java.math.BigInteger; |
| import java.util.Arrays; |
| |
| public class IPv6WithMask extends Masked<IPv6> { |
| |
| private IPv6WithMask(IPv6 value, IPv6 mask) { |
| super(value, mask); |
| } |
| |
| public static IPv6WithMask of(IPv6 value, IPv6 mask) { |
| return new IPv6WithMask(value, mask); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder res = new StringBuilder(); |
| res.append(((IPv6)value).toString()); |
| res.append('/'); |
| |
| BigInteger maskint = new BigInteger(((IPv6)mask).getBytes()); |
| if (maskint.not().add(BigInteger.ONE).bitCount() == 1) { |
| // CIDR notation |
| res.append(maskint.bitCount()); |
| } else { |
| // Full address mask |
| res.append(((IPv6)mask).toString()); |
| } |
| |
| return res.toString(); |
| } |
| |
| public static IPv6WithMask of(final String string) { |
| int slashPos; |
| String ip = string; |
| int maskBits = 0; |
| IPv6 maskAddress = null; |
| |
| // Read mask suffix |
| if ((slashPos = string.indexOf('/')) != -1) { |
| ip = string.substring(0, slashPos); |
| try { |
| String suffix = string.substring(slashPos + 1); |
| if (suffix.length() == 0) |
| throw new IllegalArgumentException("IPv6 Address not well formed: " + string); |
| if (suffix.indexOf(':') != -1) { |
| // Full mask |
| maskAddress = IPv6.of(suffix); |
| } else { |
| // CIDR Suffix |
| maskBits = Integer.parseInt(suffix); |
| } |
| } catch (NumberFormatException e) { |
| throw new IllegalArgumentException("IPv6 Address not well formed: " + string); |
| } |
| if (maskBits < 0 || maskBits > 128) { |
| throw new IllegalArgumentException("IPv6 Address not well formed: " + string); |
| } |
| } |
| |
| // Read IP |
| IPv6 ipv6 = IPv6.of(ip); |
| |
| if (maskAddress != null) { |
| // Full address mask |
| return IPv6WithMask.of(ipv6, maskAddress); |
| } else if (maskBits == 0) { |
| // No mask |
| return IPv6WithMask.of(ipv6, IPv6.NO_MASK); |
| } else { |
| // With mask |
| BigInteger mask = BigInteger.ONE.negate().shiftLeft(128 - maskBits); |
| byte[] maskBytesTemp = mask.toByteArray(); |
| byte[] maskBytes; |
| if (maskBytesTemp.length < 16) { |
| maskBytes = new byte[16]; |
| System.arraycopy(maskBytesTemp, 0, maskBytes, 16 - maskBytesTemp.length, maskBytesTemp.length); |
| Arrays.fill(maskBytes, 0, 16 - maskBytesTemp.length, (byte)(0xFF)); |
| } else if (maskBytesTemp.length > 16) { |
| maskBytes = new byte[16]; |
| System.arraycopy(maskBytesTemp, 0, maskBytes, 0, maskBytes.length); |
| } else { |
| maskBytes = maskBytesTemp; |
| } |
| return IPv6WithMask.of(ipv6, IPv6.of(maskBytes)); |
| } |
| } |
| |
| |
| } |