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smtpmx.php
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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); } }