smtpserver.java

java 开发的邮件服务器平台。支持以下协议。 协议可以修改为自己的专门标识

                getLogger().info("The maximum allowed message size is " + maxMessageSize + " bytes.");
            } else {
                getLogger().info("No maximum message size is enforced for this server.");
            }
            // How many bytes to read before updating the timer that data is being transfered
            lengthReset = configuration.getChild("lengthReset").getValueAsInteger(lengthReset);
            if (lengthReset <= 0) {
                throw new ConfigurationException("The configured value for the idle timeout reset, " + lengthReset + ", is not valid.");
            }
            if (getLogger().isInfoEnabled()) {
                getLogger().info("The idle timeout will be reset every " + lengthReset + " bytes.");
            }
        } else {
            mailetcontext.setAttribute(Constants.HELLO_NAME, "localhost");
        }
    }

    /**
     * @see org.apache.avalon.framework.activity.Initializable#initialize()
     */
    public void initialize() throws Exception {
        super.initialize();
        if (!isEnabled()) {
            return;
        }

        if (connectionLimit != null) {
            theHandlerPool = new HardResourceLimitingPool(theHandlerFactory, 5, connectionLimit.intValue());
            if (getLogger().isDebugEnabled()) {
                getLogger().debug("Using a bounded pool for SMTP handlers with upper limit " + connectionLimit.intValue());
            }
        } else {
            // NOTE: The maximum here is not a real maximum.  The handler pool will continue to
            //       provide handlers beyond this value.
            theHandlerPool = new DefaultPool(theHandlerFactory, null, 5, 30);
            getLogger().debug("Using an unbounded pool for SMTP handlers.");
        }
        if (theHandlerPool instanceof LogEnabled) {
            ((LogEnabled)theHandlerPool).enableLogging(getLogger());
        }
        if (theHandlerPool instanceof Initializable) {
            ((Initializable)theHandlerPool).initialize();
        }

        theWatchdogFactory = getWatchdogFactory();
    }

    /**
     * @see org.apache.james.core.AbstractJamesService#getDefaultPort()
     */
     protected int getDefaultPort() {
        return 25;
     }

    /**
     * @see org.apache.james.core.AbstractJamesService#getServiceType()
     */
    public String getServiceType() {
        return "SMTP Service";
    }

    /**
     * @see org.apache.avalon.cornerstone.services.connection.AbstractHandlerFactory#newHandler()
     */
    protected ConnectionHandler newHandler()
            throws Exception {
        SMTPHandler theHandler = (SMTPHandler)theHandlerPool.get();

        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Getting SMTPHandler from pool.");
        }
        Watchdog theWatchdog = theWatchdogFactory.getWatchdog(theHandler.getWatchdogTarget());

        theHandler.setConfigurationData(theConfigData);

        theHandler.setWatchdog(theWatchdog);
        return theHandler;
    }

    /**
     * @see org.apache.avalon.cornerstone.services.connection.ConnectionHandlerFactory#releaseConnectionHandler(ConnectionHandler)
     */
    public void releaseConnectionHandler( ConnectionHandler connectionHandler ) {
        if (!(connectionHandler instanceof SMTPHandler)) {
            throw new IllegalArgumentException("Attempted to return non-SMTPHandler to pool.");
        }
        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Returning SMTPHandler to pool.");
        }
        theHandlerPool.put((Poolable)connectionHandler);
    }

    /**
     * The factory for producing handlers.
     */
    private static class SMTPHandlerFactory
        implements ObjectFactory {

        /**
         * @see org.apache.avalon.excalibur.pool.ObjectFactory#newInstance()
         */
        public Object newInstance() throws Exception {
            return new SMTPHandler();
        }

        /**
         * @see org.apache.avalon.excalibur.pool.ObjectFactory#getCreatedClass()
         */
        public Class getCreatedClass() {
            return SMTPHandler.class;
        }

        /**
         * @see org.apache.avalon.excalibur.pool.ObjectFactory#decommision(Object)
         */
        public void decommission( Object object ) throws Exception {
            return;
        }
    }

    /**
     * A class to provide SMTP handler configuration to the handlers
     */
    private class SMTPHandlerConfigurationDataImpl
        implements SMTPHandlerConfigurationData {

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#getHelloName()
         */
        public String getHelloName() {
            return SMTPServer.this.helloName;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#getResetLength()
         */
        public int getResetLength() {
            return SMTPServer.this.lengthReset;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#getMaxMessageSize()
         */
        public long getMaxMessageSize() {
            return SMTPServer.this.maxMessageSize;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#isAuthRequired(String)
         */
        public boolean isRelayingAllowed(String remoteIP) {
            boolean relayingAllowed = false;
            if (authorizedNetworks != null) {
                relayingAllowed = SMTPServer.this.authorizedNetworks.matchInetNetwork(remoteIP);
            }
            return relayingAllowed;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#isAuthRequired(String)
         */
        public boolean isAuthRequired(String remoteIP) {
            boolean authRequired = SMTPServer.this.authRequired;
            if (authorizedNetworks != null) {
                authRequired = authRequired && !SMTPServer.this.authorizedNetworks.matchInetNetwork(remoteIP);
            }
            return authRequired;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#isAuthRequired()
         */
        public boolean isAuthRequired() {
            return SMTPServer.this.authRequired;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#isVerifyIdentity()
         */
        public boolean isVerifyIdentity() {
            return SMTPServer.this.verifyIdentity;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#getMailServer()
         */
        public MailServer getMailServer() {
            return SMTPServer.this.mailServer;
        }

        /**
         * @see org.apache.james.smtpserver.SMTPHandlerConfigurationData#getUsersRepository()
         */
        public UsersRepository getUsersRepository() {
            return SMTPServer.this.users;
        }
    }
}