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/*
Chapter 3 - Simple Protocols
Java 2 Network Protocols Black Book
by Al Williams
Paraglyph Press 2001
*/
import java.net.*;
import java.io.*;
public class Finger {
public String finger(String host, String users)
throws IOException, SocketException {
String outstring="";
int c=0;
Socket sock=new Socket(host,79);
OutputStream os = sock.getOutputStream();
InputStream is = sock.getInputStream();
users = users + "\r\n";
os.write(users.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: finger host [user]");
System.exit(1);
}
if (args.length>=2)
for (int i=1; i<args.length; i++)
ulist+=args[i]+" ";
hostname=args[0];
Finger worker = new Finger();
try {
System.out.println(worker.finger(hostname,ulist.trim()));
}
catch (Exception e) {
System.out.println(e);
}
}
}
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