Fixed some things on the FTPClient and added a new SMTPClient class

src/zutil/network/FTPClient.java

@@ -151,6 +151,7 @@ public class FTPClient extends Thread{
 	private synchronized String readCommand(boolean print) throws IOException{
 		String tmp = in.readLine();
 		if(print)System.out.println(tmp);
+		//if(parseReturnCode(tmp) >= 400 ) throw new IOException(tmp);
 		
 		return tmp;
 	}

src/zutil/network/SMTPClient.java

@@ -0,0 +1,153 @@
+package zutil.network;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintStream;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.util.Date;
+
+/**
+ * A simple class that connects and logs in to a SMTP
+ * server and then send emails.
+ * INFO: http://cr.yp.to/smtp/client.html
+ * 
+ * @author Ziver
+ *
+ */
+public class SMTPClient {
+
+	private BufferedReader in;
+	private PrintStream out;
+	private Socket socket;
+	private String url;
+	private int port;
+
+	public SMTPClient(String url){
+		this(url, 25);
+	}
+
+	public SMTPClient(String url, int port){
+		this.url = url;
+		this.port = port;
+	}
+
+	/**
+	 * Connects to the server. 
+	 * Sends the message. 
+	 * Closes the connection
+	 * 
+	 * @param from The destination email address
+	 * @param to The recipients email address
+	 * @param subj The subject of the message
+	 * @param msg The message
+	 * @throws IOException
+	 */
+	public synchronized void send(String from, String to, String subj, String msg) throws IOException{
+		try{
+			connect();
+			// FROM and TO
+			sendCommand("MAIL FROM:"+from);
+			sendCommand("RCPT TO:"+to);
+			sendCommand("DATA");
+			// The Message
+			sendNoReplyCommand("Date: "+(new Date()), true);
+			sendNoReplyCommand("From: "+from, true);
+			sendNoReplyCommand("To: "+to, true);
+			sendNoReplyCommand("Subject: "+subj, true);
+			sendNoReplyCommand(" ", true);
+			sendNoReplyCommand(msg, true);
+			sendCommand(".", true);
+			
+			close();
+		}catch(IOException e){
+			close();
+			throw e;
+		}
+	}
+
+	/**
+	 * Connects to the server
+	 * 
+	 * @throws UnknownHostException
+	 * @throws IOException
+	 */
+	public void connect() throws UnknownHostException, IOException{
+		socket = new Socket(url, port);
+		in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+		out = new PrintStream(socket.getOutputStream());
+
+		readCommand(true);
+		sendCommand("HELO "+url);
+	}
+
+	/**
+	 * Sends the given line to the server and returns a status integer
+	 * 
+	 * @param cmd The command to send
+	 * @return The return code from the server
+	 * @throws IOException if the cmd fails
+	 */
+	private int sendCommand(String cmd) throws IOException{
+		return parseReturnCode(sendCommand(cmd, true));
+	}
+
+	/**
+	 * Sends the given line to the server and returns the last line
+	 * 
+	 * @param cmd The command to send
+	 * @param print To print out the received lines
+	 * @return Last String line from the server
+	 * @throws IOException 
+	 */
+	private String sendCommand(String cmd, boolean print) throws IOException{
+		sendNoReplyCommand(cmd, print);
+		return readCommand(print);
+	}
+
+	/**
+	 * Sends a given command and don't cares about the reply
+	 * 
+	 * @param cmd The command
+	 * @param print If it should print to System.out
+	 * @throws IOException 
+	 */
+	private void sendNoReplyCommand(String cmd, boolean print) throws IOException{
+		out.println(cmd);
+		if(print)System.out.println(cmd);
+	}
+
+	/**
+	 * Reads on line from the command channel
+	 * 
+	 * @param print If the method should print the input line
+	 * @return The input line
+	 * @throws IOException if the server returns a error code
+	 */
+	private String readCommand(boolean print) throws IOException{
+		String tmp = in.readLine();
+		if(print)System.out.println(tmp);
+		if(parseReturnCode(tmp) >= 400 ) throw new IOException(tmp);
+
+		return tmp;
+	}
+
+	/**
+	 * Parses the return line from the server and returns the status code
+	 * 
+	 * @param msg The message from the server
+	 * @return The status code
+	 * @throws IOException 
+	 */
+	private synchronized int parseReturnCode(String msg){
+		return Integer.parseInt(msg.substring(0, 3));
+	}
+
+	public void close() throws IOException{
+		sendCommand("QUIT", true);
+		in.close();
+		out.close();
+		socket.close();
+	}
+}