Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | // Copyright (c) 2004 Brian Wellington (bwelling@xbill.org) |
| 2 | |
| 3 | package org.xbill.DNS; |
| 4 | |
| 5 | import java.io.*; |
| 6 | |
| 7 | /** |
| 8 | * Implements common functionality for the many record types whose format |
| 9 | * is an unsigned 16 bit integer followed by a name. |
| 10 | * |
| 11 | * @author Brian Wellington |
| 12 | */ |
| 13 | |
| 14 | abstract class U16NameBase extends Record { |
| 15 | |
| 16 | private static final long serialVersionUID = -8315884183112502995L; |
| 17 | |
| 18 | protected int u16Field; |
| 19 | protected Name nameField; |
| 20 | |
| 21 | protected |
| 22 | U16NameBase() {} |
| 23 | |
| 24 | protected |
| 25 | U16NameBase(Name name, int type, int dclass, long ttl) { |
| 26 | super(name, type, dclass, ttl); |
| 27 | } |
| 28 | |
| 29 | protected |
| 30 | U16NameBase(Name name, int type, int dclass, long ttl, int u16Field, |
| 31 | String u16Description, Name nameField, String nameDescription) |
| 32 | { |
| 33 | super(name, type, dclass, ttl); |
| 34 | this.u16Field = checkU16(u16Description, u16Field); |
| 35 | this.nameField = checkName(nameDescription, nameField); |
| 36 | } |
| 37 | |
| 38 | void |
| 39 | rrFromWire(DNSInput in) throws IOException { |
| 40 | u16Field = in.readU16(); |
| 41 | nameField = new Name(in); |
| 42 | } |
| 43 | |
| 44 | void |
| 45 | rdataFromString(Tokenizer st, Name origin) throws IOException { |
| 46 | u16Field = st.getUInt16(); |
| 47 | nameField = st.getName(origin); |
| 48 | } |
| 49 | |
| 50 | String |
| 51 | rrToString() { |
| 52 | StringBuffer sb = new StringBuffer(); |
| 53 | sb.append(u16Field); |
| 54 | sb.append(" "); |
| 55 | sb.append(nameField); |
| 56 | return sb.toString(); |
| 57 | } |
| 58 | |
| 59 | protected int |
| 60 | getU16Field() { |
| 61 | return u16Field; |
| 62 | } |
| 63 | |
| 64 | protected Name |
| 65 | getNameField() { |
| 66 | return nameField; |
| 67 | } |
| 68 | |
| 69 | void |
| 70 | rrToWire(DNSOutput out, Compression c, boolean canonical) { |
| 71 | out.writeU16(u16Field); |
| 72 | nameField.toWire(out, null, canonical); |
| 73 | } |
| 74 | |
| 75 | } |