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Copy pathHINFORecord.java
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120 lines (105 loc) · 3.25 KB
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
/**
* Host Information - describes the CPU and OS of a host
*
* @author Brian Wellington
* @see <a href="https://datatracker.ietf.org/doc/html/rfc1035">RFC 1035: Domain Names -
* Implementation and Specification</a>
*/
public class HINFORecord extends Record {
private byte[] cpu;
private byte[] os;
HINFORecord() {}
/**
* Creates an HINFO Record from the given data
*
* @param cpu A string describing the host's CPU
* @param os A string describing the host's OS
* @throws IllegalArgumentException One of the strings has invalid escapes
*/
public HINFORecord(Name name, int dclass, long ttl, String cpu, String os) {
super(name, Type.HINFO, dclass, ttl);
try {
this.cpu = byteArrayFromString(cpu);
this.os = byteArrayFromString(os);
} catch (TextParseException e) {
throw new IllegalArgumentException(e.getMessage());
}
}
@Override
protected void rrFromWire(DNSInput in) throws IOException {
cpu = in.readCountedString();
os = in.readCountedString();
}
@Override
protected void rdataFromString(Tokenizer st, Name origin) throws IOException {
try {
cpu = byteArrayFromString(st.getString());
os = byteArrayFromString(st.getString());
} catch (TextParseException e) {
throw st.exception(e.getMessage());
}
}
/**
* Returns the host's CPU as a string.
*
* @param escape if true, returns the RR textual representation of the underlying bytes. If false,
* returns just the simple string using the UTF-8 charset with no additional escaping.
* @since 3.6.5
*/
public String getCPU(boolean escape) {
return escape ? byteArrayToString(cpu, false) : new String(cpu, StandardCharsets.UTF_8);
}
/** Returns the host's CPU as a string, escaped for RR textual representation */
public String getCPU() {
return getCPU(true);
}
/**
* Returns the host's CPU as a raw byte-array
*
* @since 3.6.5
*/
public byte[] getCPUAsByteArray() {
return cpu;
}
/**
* Returns the host's OS as a string.
*
* @param escape if true, returns the RR textual representation of the underlying bytes. If false,
* returns just the simple string using the UTF-8 charset with no additional escaping.
* @since 3.6.5
*/
public String getOS(boolean escape) {
return escape ? byteArrayToString(os, false) : new String(os, StandardCharsets.UTF_8);
}
/** Returns the host's OS as a string, escaped for RR textual representation */
public String getOS() {
return getOS(true);
}
/**
* Returns the host's OS as a raw byte-array
*
* @since 3.6.5
*/
public byte[] getOSAsByteArray() {
return os;
}
@Override
protected void rrToWire(DNSOutput out, Compression c, boolean canonical) {
out.writeCountedString(cpu);
out.writeCountedString(os);
}
/** Converts to a string */
@Override
protected String rrToString() {
StringBuilder sb = new StringBuilder();
sb.append(byteArrayToString(cpu, true));
sb.append(" ");
sb.append(byteArrayToString(os, true));
return sb.toString();
}
}