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<?php
/**
* Copyright 2010-2017 Horde LLC (http://www.horde.org/)
* Copyright (c) 2010 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:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* o 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.
* o The names of the authors may not 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
* OWNER 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 Horde
* @copyright 2010-2017 Horde LLC
* @copyright 2010 Gerd Schaufelberger
* @license http://www.horde.org/licenses/bsd New BSD License
* @package Mail
*/
/**
* SMTP MX implementation.
*
* @author Gerd Schaufelberger <gerd@php-tools.net>
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2010-2016 Horde LLC
* @copyright 2010 Gerd Schaufelberger
* @deprecated Use Horde_Mail_Transport_Hordesmtp instead
* @license http://www.horde.org/licenses/bsd New BSD License
* @package Mail
*/
class Horde_Mail_Transport_Smtpmx extends Horde_Mail_Transport
{
/**
* SMTP connection object.
*
* @var Net_SMTP
*/
protected $_smtp = null;
/**
* Net_DNS2_Resolver object.
*
* @var Net_DNS2_Resolver
*/
protected $_resolver;
/**
* Internal error codes.
* Translate internal error identifier to human readable messages.
*
* @var array
*/
protected $_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_DNS2 or switch off "netdns"'
),
'failed_rset' => array(
'code' => 10,
'msg' => 'RSET command failed, SMTP-connection corrupt.'
)
);
/**
* @param array $params Additional options:
* - debug: (boolean) Activate SMTP debug mode?
* DEFAULT: false
* - mailname: (string) The name of the local mail system (a valid
* hostname which matches the reverse lookup)
* DEFAULT: Auto-determined
* - netdns: (boolean) Use PEAR:Net_DNS2 (true) or the PHP builtin
* getmxrr().
* DEFAULT: true
* - port: (integer) Port.
* DEFAULT: Auto-determined
* - test: (boolean) Activate test mode?
* DEFAULT: false
* - timeout: (integer) The SMTP connection timeout (in seconds).
* DEFAULT: 10
* - verp: (boolean) Whether to use VERP.
* If not a boolean, the string value will be used as the VERP
* separators.
* DEFAULT: false
* - vrfy: (boolean) Whether to use VRFY.
* DEFAULT: false
*/
public function __construct(array $params = array())
{
/* Try to find a valid mailname. */
if (!isset($params['mailname']) && function_exists('posix_uname')) {
$uname = posix_uname();
$params['mailname'] = $uname['nodename'];
}
if (!isset($params['port'])) {
$params['port'] = getservbyname('smtp', 'tcp');
}
$this->_params = array_merge(array(
'debug' => false,
'mailname' => 'localhost',
'netdns' => true,
'port' => 25,
'test' => false,
'timeout' => 10,
'verp' => false,
'vrfy' => false
), $params);
/* SMTP requires CRLF line endings. */
$this->sep = "\r\n";
}
/**
* Destructor implementation to ensure that we disconnect from any
* potentially-alive persistent SMTP connections.
*/
public function __destruct()
{
if (is_object($this->_smtp)) {
$this->_smtp->disconnect();
$this->_smtp = null;
}
}
/**
*/
public function send($recipients, array $headers, $body)
{
$headers = $this->_sanitizeHeaders($headers);
// Prepare headers
list($from, $textHeaders) = $this->prepareHeaders($headers);
try {
$from = $this->_getFrom($from, $headers);
} catch (Horde_Mail_Exception $e) {
$this->_error('no_from');
}
// Prepare recipients
foreach ($this->parseRecipients($recipients) as $rcpt) {
list(,$host) = explode('@', $rcpt);
$mx = $this->_getMx($host);
if (!$mx) {
$this->_error('no_mx', array('rcpt' => $rcpt));
}
$connected = false;
foreach (array_keys($mx) as $mserver) {
$this->_smtp = new Net_SMTP($mserver, $this->_params['port'], $this->_params['mailname']);
// configure the SMTP connection.
if ($this->_params['debug']) {
$this->_smtp->setDebug(true);
}
// attempt to connect to the configured SMTP server.
$res = $this->_smtp->connect($this->_params['timeout']);
if ($res instanceof PEAR_Error) {
$this->_smtp = null;
continue;
}
// connection established
if ($res) {
$connected = true;
break;
}
}
if (!$connected) {
$this->_error('not_connected', array(
'host' => implode(', ', array_keys($mx)),
'port' => $this->_params['port'],
'rcpt' => $rcpt
));
}
// Verify recipient
if ($this->_params['vrfy']) {
$res = $this->_smtp->vrfy($rcpt);
if ($res instanceof PEAR_Error) {
$this->_error('failed_vrfy_rcpt', array('rcpt' => $rcpt));
}
}
// mail from:
$args['verp'] = $this->_params['verp'];
$res = $this->_smtp->mailFrom($from, $args);
if ($res instanceof PEAR_Error) {
$this->_error('failed_set_from', array('from' => $from));
}
// rcpt to:
$res = $this->_smtp->rcptTo($rcpt);
if ($res instanceof PEAR_Error) {
$this->_error('failed_set_rcpt', array('rcpt' => $rcpt));
}
// Don't send anything in test mode
if ($this->_params['test']) {
$res = $this->_smtp->rset();
if ($res instanceof PEAR_Error) {
$this->_error('failed_rset');
}
$this->_smtp->disconnect();
$this->_smtp = null;
return;
}
// Send data. Net_SMTP does necessary EOL conversions.
$res = $this->_smtp->data($body, $textHeaders);
if ($res instanceof PEAR_Error) {
$this->_error('failed_send_data', array('rcpt' => $rcpt));
}
$this->_smtp->disconnect();
$this->_smtp = null;
}
}
/**
* Recieve MX records for a host.
*
* @param string $host Mail host.
*
* @return mixed Sorted MX list or false on error.
*/
protected function _getMx($host)
{
$mx = array();
if ($this->params['netdns']) {
$this->_loadNetDns();
try {
$response = $this->_resolver->query($host, 'MX');
if (!$response) {
return false;
}
} catch (Exception $e) {
throw new Horde_Mail_Exception($e);
}
foreach ($response->answer as $rr) {
if ($rr->type == 'MX') {
$mx[$rr->exchange] = $rr->preference;
}
}
} else {
$mxHost = $mxWeight = array();
if (!getmxrr($host, $mxHost, $mxWeight)) {
return false;
}
for ($i = 0; $i < count($mxHost); ++$i) {
$mx[$mxHost[$i]] = $mxWeight[$i];
}
}
asort($mx);
return $mx;
}
/**
* Initialize Net_DNS2_Resolver.
*/
protected function _loadNetDns()
{
if (!$this->_resolver) {
if (!class_exists('Net_DNS2_Resolver')) {
$this->_error('no_resolver');
}
$this->_resolver = new Net_DNS2_Resolver();
}
}
/**
* Format error message.
*
* @param string $id Maps error ids to codes and message.
* @param array $info Optional information in associative array.
*
* @throws Horde_Mail_Exception
*/
protected function _error($id, $info = array())
{
$msg = $this->_errorCode[$id]['msg'];
// include info to messages
if (!empty($info)) {
$replace = $search = array();
foreach ($info as $key => $value) {
$search[] = '{' . Horde_String::upper($key) . '}';
$replace[] = $value;
}
$msg = str_replace($search, $replace, $msg);
}
throw new Horde_Mail_Exception($msg, $this->_errorCode[$id]['code']);
}
}