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- <?php
- //
- // +----------------------------------------------------------------------+
- // | PHP version 4.0 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2001 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.02 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Chuck Hagenbuch <chuck@horde.org> |
- // +----------------------------------------------------------------------+
-
- require_once 'PEAR.php';
-
- /**
- * Provides an implementation of the SMTP protocol using PEAR's
- * Net_Socket:: class.
- */
- class Net_SMTP extends PEAR {
-
- /**
- * The server to connect to.
- * @var string
- */
- var $host = 'localhost';
-
- /**
- * The port to connect to.
- * @var int
- */
- var $port = 25;
-
- /**
- * The value to give when sending EHLO or HELO.
- * @var string
- */
- var $localhost = 'localhost';
-
- /**
- * The socket resource being used to connect to the SMTP server.
- * @var resource
- */
- var $socket;
-
- /**
- * The most recent reply code
- * @var int
- */
- var $code;
-
- /**
- * Stores detected features of the SMTP server.
- * @var array
- */
- var $esmtp;
-
- /**
- * Constructor
- *
- * Instantiates a new Net_SMTP object, overriding any defaults
- * with parameters that are passed in.
- *
- * @param string The server to connect to.
- * @param int The port to connect to.
- * @param string The value to give when sending EHLO or HELO.
- */
- function Net_SMTP($host = null, $port = null, $localhost = null) {
- if (isset($host)) $this->host = $host;
- if (isset($port)) $this->port = $port;
- if (isset($localhost)) $this->localhost = $localhost;
- }
-
- /**
- * Attempt to connect to the SMTP server.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function connect() {
- include_once 'Net/Socket.php';
-
- if (PEAR::isError($this->socket = new Net_Socket())) { return new PEAR_Error('unable to create a socket object'); }
- if (PEAR::isError($this->socket->connect($this->host, $this->port))) { return new PEAR_Error('unable to open socket'); }
-
- if (PEAR::isError($this->validateResponse('220'))) { return new PEAR_Error('smtp server not 220 ready'); }
- if (!$this->identifySender()) { return new PEAR_Error('unable to identify smtp server'); }
-
- return true;
- }
-
- /**
- * Attempt to disconnect from the SMTP server.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function disconnect() {
- if (PEAR::isError($this->socket->write("QUIT\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!$this->validateResponse('221')) { return new PEAR_Error('221 Bye not received'); }
- if (PEAR::isError($this->socket->disconnect())) { return new PEAR_Error('socket disconnect failed'); }
-
- return true;
- }
-
- /**
- * Attempt to do SMTP authentication.
- *
- * @param string The userid to authenticate as.
- * @param string The password to authenticate with.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function auth($uid, $pwd) {
- /* Note: not currently checking if AUTH LOGIN is allowed */
- /* Note: only allows one authentication mechanism */
-
- if (!isset($this->esmtp['AUTH'])) { return new PEAR_Error('auth not supported'); }
-
- if (PEAR::isError($this->socket->write("AUTH LOGIN\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!$this->validateResponse('334')) { return new PEAR_Error('AUTH LOGIN not recognized'); }
-
- if (PEAR::isError($this->socket->write(base64_encode($uid) . "\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!$this->validateResponse('334')) { return new PEAR_Error('354 not received'); }
-
- if (PEAR::isError($this->socket->write(base64_encode($pwd) . "\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!$this->validateResponse('235')) { return new PEAR_Error('235 not received'); }
-
- return true;
- }
-
- /**
- * Send the HELO command.
- *
- * @param string The domain name to say we are.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function helo($domain) {
- if (PEAR::isError($this->socket->write("HELO $domain\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the MAIL FROM: command.
- *
- * @param string The sender (reverse path) to set.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function mailFrom($reverse_path) {
- if (PEAR::isError($this->socket->write("MAIL FROM:<$reverse_path>\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the RCPT TO: command.
- *
- * @param string The recipient (forward path) to add.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function rcptTo($forward_path) {
- /* Note: 251 is also a valid response code */
-
- if (PEAR::isError($this->socket->write("RCPT TO:<$forward_path>\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the DATA command.
- *
- * @param string The message body to send.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function data($data) {
- $data = preg_replace("/([^\r]{1})\n/", "\\1\r\n", $data);
- $data = preg_replace("/\n\n/", "\n\r\n", $data);
- $data = preg_replace("/^(\..*)/", ".\\1", $data);
-
- if (PEAR::isError($this->socket->write("DATA\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('354'))) { return new PEAR_Error('354 not received'); }
- if (PEAR::isError($this->socket->write($data . "\r\n.\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the SEND FROM: command.
- *
- * @param string The reverse path to send.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function send_from($reverse_path) {
- if (PEAR::isError($this->socket->write("SEND FROM:<$reverse_path>\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the SOML FROM: command.
- *
- * @param string The reverse path to send.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function soml_from($reverse_path) {
- if (PEAR::isError($this->socket->write("SOML FROM:<$reverse_path>\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the SAML FROM: command.
- *
- * @param string The reverse path to send.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function saml_from($reverse_path) {
- if (PEAR::isError($this->socket->write("SAML FROM:<$reverse_path>\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the RSET command.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function rset() {
- if (PEAR::isError($this->socket->write("RSET\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the VRFY command.
- *
- * @param string The string to verify
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function vrfy($string) {
- /* Note: 251 is also a valid response code */
- if (PEAR::isError($this->socket->write("VRFY $string\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Send the NOOP command.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access public
- */
- function noop() {
- if (PEAR::isError($this->socket->write("NOOP\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('250 OK not received'); }
-
- return true;
- }
-
- /**
- * Attempt to send the EHLO command and obtain a list of ESMTP
- * extensions available, and failing that just send HELO.
- *
- * @return mixed Returns a PEAR_Error with an error message on any
- * kind of failure, or true on success.
- * @access private
- */
- function identifySender() {
- if (PEAR::isError($this->socket->write("EHLO $this->localhost\r\n"))) { return new PEAR_Error('write to socket failed'); }
-
- $extensions = array();
- if (!($this->validateAndParseResponse('250', $extensions))) {
- if (PEAR::isError($this->socket->write("HELO $this->localhost\r\n"))) { return new PEAR_Error('write to socket failed'); }
- if (!($this->validateResponse('250'))) { return new PEAR_Error('HELO not accepted', $this->code); }
- return true;
- }
-
- for ($i = 0; $i < count($extensions); $i++) {
- $verb = strtok($extensions[$i], ' ');
- $arguments = substr($extensions[$i], strlen($verb) + 1, strlen($extensions[$i]) - strlen($verb) - 2);
- $this->esmtp[$verb] = $arguments;
- }
- return true;
- }
-
- /**
- * Read a response from the server and see if the response code
- * matches what we are expecting.
- *
- * @param int The response code we are expecting.
- *
- * @return boolean True if we get what we expect, false otherwise.
- * @access private
- */
- function validateResponse($code) {
- while ($response = $this->socket->readLine()) {
- $reply_code = strtok($response, ' ');
- if (!(strcmp($code, $reply_code))) {
- $this->code = $reply_code;
- return true;
- } else {
- $reply_code = strtok($response, '-');
- if (strcmp($code, $reply_code)) {
- $this->code = $reply_code;
- return false;
- }
- }
- }
-
- return false;
- }
-
- /**
- * Read a response from the server and see if the response code
- * matches what we are expecting. Also save the rest of the
- * response in the array passed by reference as the second
- * argument.
- *
- * @param int The response code we are expecting.
- * @param array An array to dump the rest of the response into.
- *
- * @return boolean True if we get what we expect, false otherwise.
- * @access private
- */
- function validateAndParseResponse($code, &$arguments) {
- $arguments = array();
-
- while ($response = $this->socket->readLine()) {
- $reply_code = strtok($response, ' ');
- if (!(strcmp($code, $reply_code))) {
- $arguments[] = substr($response, strlen($code) + 1, strlen($response) - strlen($code) - 1);
- $this->code = $reply_code;
- return true;
- } else {
- $reply_code = strtok($response, '-');
- if (strcmp($code, $reply_code)) {
- $this->code = $reply_code;
- return false;
- }
- }
- $arguments[] = substr($response, strlen($code) + 1, strlen($response) - strlen($code) - 1);
- }
-
- return false;
- }
-
- }
- ?>
-