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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* SMTP MX
*
* SMTP MX implementation of the PEAR Mail interface. Requires the Net_SMTP class.
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2010-2017 gERD Schaufelberger
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category Mail
* @package Mail_smtpmx
* @author gERD Schaufelberger <gerd@php-tools.net>
* @copyright 2010-2017 gERD Schaufelberger
* @license http://opensource.org/licenses/BSD-3-Clause New BSD License
* @version CVS: $Id$
* @link http://pear.php.net/package/Mail/
*/
require_once 'Net/SMTP.php';
/**
* SMTP MX implementation of the PEAR Mail interface. Requires the Net_SMTP class.
*
*
* @access public
* @author gERD Schaufelberger <gerd@php-tools.net>
* @package Mail
* @version $Revision$
*/
class Mail_smtpmx extends Mail {
/**
* SMTP connection object.
*
* @var object
* @access private
*/
var $_smtp = null;
/**
* The port the SMTP server is on.
* @var integer
* @see getservicebyname()
*/
var $port = 25;
/**
* Hostname or domain that will be sent to the remote SMTP server in the
* HELO / EHLO message.
*
* @var string
* @see posix_uname()
*/
var $mailname = 'localhost';
/**
* SMTP connection timeout value. NULL indicates no timeout.
*
* @var integer
*/
var $timeout = 10;
/**
* use either PEAR:Net_DNS or getmxrr
*
* @var boolean
*/
var $withNetDns = true;
/**
* PEAR:Net_DNS_Resolver
*
* @var object
*/
var $resolver;
/**
* Whether to use VERP or not. If not a boolean, the string value
* will be used as the VERP separators.
*
* @var mixed boolean or string
*/
var $verp = false;
/**
* Whether to use VRFY or not.
*
* @var boolean $vrfy
*/
var $vrfy = false;
/**
* Switch to test mode - don't send emails for real
*
* @var boolean $debug
*/
var $test = false;
/**
* Turn on Net_SMTP debugging?
*
* @var boolean $peardebug
*/
var $debug = false;
/**
* internal error codes
*
* translate internal error identifier to PEAR-Error codes and human
* readable messages.
*
* @var boolean $debug
* @todo as I need unique error-codes to identify what exactly went wrond
* I did not use intergers as it should be. Instead I added a "namespace"
* for each code. This avoids conflicts with error codes from different
* classes. How can I use unique error codes and stay conform with PEAR?
*/
var $errorCode = array(
'not_connected' => array(
'code' => 1,
'msg' => 'Could not connect to any mail server ({HOST}) at port {PORT} to send mail to {RCPT}.'
),
'failed_vrfy_rcpt' => array(
'code' => 2,
'msg' => 'Recipient "{RCPT}" could not be veryfied.'
),
'failed_set_from' => array(
'code' => 3,
'msg' => 'Failed to set sender: {FROM}.'
),
'failed_set_rcpt' => array(
'code' => 4,
'msg' => 'Failed to set recipient: {RCPT}.'
),
'failed_send_data' => array(
'code' => 5,
'msg' => 'Failed to send mail to: {RCPT}.'
),
'no_from' => array(
'code' => 5,
'msg' => 'No from address has be provided.'
),
'send_data' => array(
'code' => 7,
'msg' => 'Failed to create Net_SMTP object.'
),
'no_mx' => array(
'code' => 8,
'msg' => 'No MX-record for {RCPT} found.'
),
'no_resolver' => array(
'code' => 9,
'msg' => 'Could not start resolver! Install PEAR:Net_DNS or switch off "netdns"'
),
'failed_rset' => array(
'code' => 10,
'msg' => 'RSET command failed, SMTP-connection corrupt.'
),
);
/**
* Constructor.
*
* Instantiates a new Mail_smtp:: object based on the parameters
* passed in. It looks for the following parameters:
* mailname The name of the local mail system (a valid hostname which matches the reverse lookup)
* port smtp-port - the default comes from getservicebyname() and should work fine
* timeout The SMTP connection timeout. Defaults to 30 seconds.
* vrfy Whether to use VRFY or not. Defaults to false.
* verp Whether to use VERP or not. Defaults to false.
* test Activate test mode? Defaults to false.
* debug Activate SMTP and Net_DNS debug mode? Defaults to false.
* netdns whether to use PEAR:Net_DNS or the PHP build in function getmxrr, default is true
*
* If a parameter is present in the $params array, it replaces the
* default.
*
* @access public
* @param array Hash containing any parameters different from the
* defaults.
* @see _Mail_smtpmx()
*/
function __construct($params)
{
if (isset($params['mailname'])) {
$this->mailname = $params['mailname'];
} else {
// try to find a valid mailname
if (function_exists('posix_uname')) {
$uname = posix_uname();
$this->mailname = $uname['nodename'];
}
}
// port number
if (isset($params['port'])) {
$this->_port = $params['port'];
} else {
$this->_port = getservbyname('smtp', 'tcp');
}
if (isset($params['timeout'])) $this->timeout = $params['timeout'];
if (isset($params['verp'])) $this->verp = $params['verp'];
if (isset($params['test'])) $this->test = $params['test'];
if (isset($params['peardebug'])) $this->test = $params['peardebug'];
if (isset($params['netdns'])) $this->withNetDns = $params['netdns'];
}
/**
* Constructor wrapper for PHP4
*
* @access public
* @param array Hash containing any parameters different from the defaults
* @see __construct()
*/
function Mail_smtpmx($params)
{
$this->__construct($params);
register_shutdown_function(array(&$this, '__destruct'));
}
/**
* Destructor implementation to ensure that we disconnect from any
* potentially-alive persistent SMTP connections.
*/
function __destruct()
{
if (is_object($this->_smtp)) {
$this->_smtp->disconnect();
$this->_smtp = null;
}
}
/**
* Implements Mail::send() function using SMTP direct delivery
*
* @access public
* @param mixed $recipients in RFC822 style or array
* @param array $headers The array of headers to send with the mail.
* @param string $body The full text of the message body,
* @return mixed Returns true on success, or a PEAR_Error
*/
function send($recipients, $headers, $body)
{
if (!is_array($headers)) {
return PEAR::raiseError('$headers must be an array');
}
$result = $this->_sanitizeHeaders($headers);
if (is_a($result, 'PEAR_Error')) {
return $result;
}
// Prepare headers
$headerElements = $this->prepareHeaders($headers);
if (is_a($headerElements, 'PEAR_Error')) {
return $headerElements;
}
list($from, $textHeaders) = $headerElements;
// use 'Return-Path' if possible
if (!empty($headers['Return-Path'])) {
$from = $headers['Return-Path'];
}
if (!isset($from)) {
return $this->_raiseError('no_from');
}
// Prepare recipients
$recipients = $this->parseRecipients($recipients);
if (is_a($recipients, 'PEAR_Error')) {
return $recipients;
}
foreach ($recipients as $rcpt) {
list($user, $host) = explode('@', $rcpt);
$mx = $this->_getMx($host);
if (is_a($mx, 'PEAR_Error')) {
return $mx;
}
if (empty($mx)) {
$info = array('rcpt' => $rcpt);
return $this->_raiseError('no_mx', $info);
}
$connected = false;
foreach ($mx as $mserver => $mpriority) {
$this->_smtp = new Net_SMTP($mserver, $this->port, $this->mailname);
// configure the SMTP connection.
if ($this->debug) {
$this->_smtp->setDebug(true);
}
// attempt to connect to the configured SMTP server.
$res = $this->_smtp->connect($this->timeout);
if (is_a($res, 'PEAR_Error')) {
$this->_smtp = null;
continue;
}
// connection established
if ($res) {
$connected = true;
break;
}
}
if (!$connected) {
$info = array(
'host' => implode(', ', array_keys($mx)),
'port' => $this->port,
'rcpt' => $rcpt,
);
return $this->_raiseError('not_connected', $info);
}
// Verify recipient
if ($this->vrfy) {
$res = $this->_smtp->vrfy($rcpt);
if (is_a($res, 'PEAR_Error')) {
$info = array('rcpt' => $rcpt);
return $this->_raiseError('failed_vrfy_rcpt', $info);
}
}
// mail from:
$args['verp'] = $this->verp;
$res = $this->_smtp->mailFrom($from, $args);
if (is_a($res, 'PEAR_Error')) {
$info = array('from' => $from);
return $this->_raiseError('failed_set_from', $info);
}
// rcpt to:
$res = $this->_smtp->rcptTo($rcpt);
if (is_a($res, 'PEAR_Error')) {
$info = array('rcpt' => $rcpt);
return $this->_raiseError('failed_set_rcpt', $info);
}
// Don't send anything in test mode
if ($this->test) {
$result = $this->_smtp->rset();
$res = $this->_smtp->rset();
if (is_a($res, 'PEAR_Error')) {
return $this->_raiseError('failed_rset');
}
$this->_smtp->disconnect();
$this->_smtp = null;
return true;
}
// Send data
$res = $this->_smtp->data($body, $textHeaders);
if (is_a($res, 'PEAR_Error')) {
$info = array('rcpt' => $rcpt);
return $this->_raiseError('failed_send_data', $info);
}
$this->_smtp->disconnect();
$this->_smtp = null;
}
return true;
}
/**
* Recieve mx rexords for a spciefied host
*
* The MX records
*
* @access private
* @param string $host mail host
* @return mixed sorted
*/
function _getMx($host)
{
$mx = array();
if ($this->withNetDns) {
$res = $this->_loadNetDns();
if (is_a($res, 'PEAR_Error')) {
return $res;
}
$response = $this->resolver->query($host, 'MX');
if (!$response) {
return false;
}
foreach ($response->answer as $rr) {
if ($rr->type == 'MX') {
$mx[$rr->exchange] = $rr->preference;
}
}
} else {
$mxHost = array();
$mxWeight = array();
if (!getmxrr($host, $mxHost, $mxWeight)) {
return false;
}
for ($i = 0; $i < count($mxHost); ++$i) {
$mx[$mxHost[$i]] = $mxWeight[$i];
}
}
asort($mx);
return $mx;
}
/**
* initialize PEAR:Net_DNS_Resolver
*
* @access private
* @return boolean true on success
*/
function _loadNetDns()
{
if (is_object($this->resolver)) {
return true;
}
if (!include_once 'Net/DNS.php') {
return $this->_raiseError('no_resolver');
}
$this->resolver = new Net_DNS_Resolver();
if ($this->debug) {
$this->resolver->test = 1;
}
return true;
}
/**
* raise standardized error
*
* include additional information in error message
*
* @access private
* @param string $id maps error ids to codes and message
* @param array $info optional information in associative array
* @see _errorCode
*/
function _raiseError($id, $info = array())
{
$code = $this->errorCode[$id]['code'];
$msg = $this->errorCode[$id]['msg'];
// include info to messages
if (!empty($info)) {
$search = array();
$replace = array();
foreach ($info as $key => $value) {
array_push($search, '{' . strtoupper($key) . '}');
array_push($replace, $value);
}
$msg = str_replace($search, $replace, $msg);
}
return PEAR::raiseError($msg, $code);
}
}