Yotam Harchol | d7b8420 | 2013-07-26 16:08:10 -0700 | [diff] [blame^] | 1 | package org.openflow.types; |
| 2 | |
| 3 | public class IPv4WithMask extends Masked<IPv4> { |
| 4 | |
| 5 | private IPv4WithMask(int rawValue, int rawMask) { |
| 6 | super(IPv4.of(rawValue), IPv4.of(rawMask)); |
| 7 | } |
| 8 | |
| 9 | private IPv4WithMask(IPv4 value, IPv4 mask) { |
| 10 | super(value, mask); |
| 11 | } |
| 12 | |
| 13 | public static IPv4WithMask of(int rawValue, int rawMask) { |
| 14 | return new IPv4WithMask(rawValue, rawMask); |
| 15 | } |
| 16 | |
| 17 | public static IPv4WithMask of(IPv4 value, IPv4 mask) { |
| 18 | return new IPv4WithMask(value, mask); |
| 19 | } |
| 20 | |
| 21 | @Override |
| 22 | public String toString() { |
| 23 | StringBuilder res = new StringBuilder(); |
| 24 | res.append(((IPv4)value).toString()); |
| 25 | |
| 26 | int maskint = ((IPv4)mask).getInt(); |
| 27 | res.append('/'); |
| 28 | if (Integer.bitCount((~maskint) + 1) == 1) { |
| 29 | // CIDR notation |
| 30 | res.append(Integer.bitCount(maskint)); |
| 31 | } else { |
| 32 | // Full address mask |
| 33 | res.append(((IPv4)mask).toString()); |
| 34 | } |
| 35 | |
| 36 | return res.toString(); |
| 37 | } |
| 38 | |
| 39 | public static OFValueType ofPossiblyMasked(final String string) { |
| 40 | int slashPos; |
| 41 | String ip = string; |
| 42 | int maskBits = 0; |
| 43 | IPv4 maskAddress = null; |
| 44 | |
| 45 | // Read mask suffix |
| 46 | if ((slashPos = string.indexOf('/')) != -1) { |
| 47 | ip = string.substring(0, slashPos); |
| 48 | try { |
| 49 | String suffix = string.substring(slashPos + 1); |
| 50 | if (suffix.length() == 0) |
| 51 | throw new IllegalArgumentException("IP Address not well formed: " + string); |
| 52 | if (suffix.indexOf('.') != -1) { |
| 53 | // Full mask |
| 54 | maskAddress = IPv4.of(suffix); |
| 55 | } else { |
| 56 | // CIDR Suffix |
| 57 | maskBits = Integer.parseInt(suffix); |
| 58 | } |
| 59 | } catch (NumberFormatException e) { |
| 60 | throw new IllegalArgumentException("IP Address not well formed: " + string); |
| 61 | } |
| 62 | if (maskBits < 0 || maskBits > 32) { |
| 63 | throw new IllegalArgumentException("IP Address not well formed: " + string); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | // Read IP |
| 68 | IPv4 ipv4 = IPv4.of(ip); |
| 69 | |
| 70 | if (maskAddress != null) { |
| 71 | // Full address mask |
| 72 | return IPv4WithMask.of(ipv4, maskAddress); |
| 73 | } else if (maskBits == 0) { |
| 74 | // No mask |
| 75 | return ipv4; |
| 76 | } else { |
| 77 | // With mask |
| 78 | int mask = (-1) << (32 - maskBits); |
| 79 | return IPv4WithMask.of(ipv4, IPv4.of(mask)); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | } |