/*
Chapter 3 - Simple Protocols
Java 2 Network Protocols Black Book
by Al Williams
Paraglyph Press 2001
*/
import java.net.*;
import java.io.*;
public class Whois {
public void whois(String query) throws IOException {
whois(query,"whois.internic.net");
}
public String whois(String query, String server) throws IOException {
Socket sock = new Socket(server,43);
int c=0;
String outstring="";
OutputStream os = sock.getOutputStream();
InputStream is = sock.getInputStream();
query += "\r\n";
os.write(query.getBytes("iso8859_1"));
try {
while (c!=-1) {
c=is.read();
if (c!=-1) outstring+=(char)c;
}
}
catch (IOException e) {}
return outstring;
}
public static void main(String[] args) {
String hostname = "";
String ulist = "";
if (args.length==0) {
System.out.println("usage: whois [%host] query");
System.exit(1);
}
int argn=0;
hostname="whois.networksolutions.com"; // default
if (args.length>1 && args[0].charAt(0)=='%') {
hostname=args[argn].substring(1);
argn++;
}
for (int i=argn; i<args.length; i++)
ulist+=args[i]+" ";
Whois worker = new Whois();
try {
System.out.println(worker.whois(ulist.trim(),hostname));
}
catch (Exception e) {
System.out.println(e);
}
}
}
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