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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.util; |
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|
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//---IMPORTS--- |
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import java.net.*; |
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import java.io.*; |
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|
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/** |
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* The Simple Mail Transfer Protocol class. This class was borrowed |
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* for the GJT, and scaled to do just what we require. |
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* |
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* @author $Author: tdb1 $ |
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* @version $Id: Smtp.java,v 1.2 2001/02/05 04:03:07 tdb1 Exp $ |
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*/ |
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public class Smtp { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public static final String REVISION = "$Revision: 1.2 $"; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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/** |
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* Connects to the specified SMTP server, on the default |
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* (and standard) port 25. |
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* |
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* @param server The SMTP server to use |
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* @throws IOException if the connection to the server fails |
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*/ |
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public Smtp(String server) throws IOException { |
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this(server, 25); |
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} |
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|
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/** |
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* Connects to the specified SMTP server on a given port |
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* |
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* @param server The SMTP server to use |
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* @param port The SMTP server port |
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* @throws IOException if the connection to the server fails |
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*/ |
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public Smtp(String server, int port) throws IOException { |
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_socket = new Socket(server, port); |
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_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream())); |
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_socketOut = new PrintWriter(_socket.getOutputStream(), true); |
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_socketIn.readLine(); // get 220 welcome header |
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sendCommand("HELO " + InetAddress.getLocalHost().getHostName(), 250); |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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/** |
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* Closes down the connection to the server |
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* |
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* @throws IOException if the command fails |
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*/ |
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public void close() throws IOException { |
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sendCommand("QUIT", 221); |
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_socketIn.close(); |
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_socketOut.close(); |
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_socket.close(); |
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} |
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|
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/** |
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* Specify who the message is from |
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* |
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* @param sender the e-mail address of the sender |
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* @throws IOException if the command fails |
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*/ |
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public void setSender(String sender) throws IOException { |
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sendCommand("MAIL FROM: <" + sender + ">", 250); |
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} |
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|
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/** |
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* Specify who the message is to be sent to |
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* |
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* @param to the e-mail address of the receiver |
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* @throws IOException if the command fails |
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*/ |
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public void setTo(String to) throws IOException { |
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sendCommand("RCPT TO: <" + to + ">", 250); |
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} |
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|
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/** |
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* Gets the PrintWriter allowing data to be sent |
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* directly to the SMTP server |
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* |
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* @return a reference to the PrintWriter |
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* @throws IOException if the command fails |
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*/ |
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public PrintWriter getOutputStream() throws IOException { |
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sendCommand("DATA", 354); |
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return _socketOut; |
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} |
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|
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/** |
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* Completes and sends the current message |
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* |
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* @throws IOException if the command fails |
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*/ |
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public void sendMessage() throws IOException { |
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sendCommand(".", 250); |
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} |
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|
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/** |
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* Sends a command to the server |
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* |
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* @param cmd The command to send |
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* @param reply The expected reply-code |
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* @throws IOException if the incorrect response code is received |
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*/ |
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public void sendCommand(String cmd, int reply) throws IOException { |
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_socketOut.println(cmd); |
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String temp = _socketIn.readLine(); |
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if (!temp.startsWith(new String(reply))) { |
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throw new IOException ("Expected " + reply + ", got " + temp); |
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} |
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} |
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|
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.FormatName class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return FormatName.getName( |
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_name, |
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getClass().getName(), |
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REVISION); |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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/** |
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* This is the friendly identifier of the |
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* component this class is running in. |
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* eg, a Filter may be called "filter1", |
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* If this class does not have an owning |
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* component, a name from the configuration |
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* can be placed here. This name could also |
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* be changed to null for utility classes. |
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*/ |
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private String _name = null; |
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|
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/** |
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* A reference to the Reader connected to the server |
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*/ |
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private BufferedReader _socketIn; |
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|
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/** |
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* A reference to the Writer connected to the server |
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*/ |
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private PrintWriter _socketOut; |
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|
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/** |
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* A reference to the Socket connected to the server |
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*/ |
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private Socket _socket; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
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|
