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<?php
/**
* SMTP implementation of the PEAR Mail interface. Requires the Net_SMTP class.
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2010-2017, Chuck Hagenbuch & Jon Parise
* 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 HTTP
* @package HTTP_Request
* @author Jon Parise <jon@php.net>
* @author Chuck Hagenbuch <chuck@horde.org>
* @copyright 2010-2017 Chuck Hagenbuch
* @license http://opensource.org/licenses/BSD-3-Clause New BSD License
* @version CVS: $Id$
* @link http://pear.php.net/package/Mail/
*/
/** Error: Failed to create a Net_SMTP object */
define('PEAR_MAIL_SMTP_ERROR_CREATE', 10000);
/** Error: Failed to connect to SMTP server */
define('PEAR_MAIL_SMTP_ERROR_CONNECT', 10001);
/** Error: SMTP authentication failure */
define('PEAR_MAIL_SMTP_ERROR_AUTH', 10002);
/** Error: No From: address has been provided */
define('PEAR_MAIL_SMTP_ERROR_FROM', 10003);
/** Error: Failed to set sender */
define('PEAR_MAIL_SMTP_ERROR_SENDER', 10004);
/** Error: Failed to add recipient */
define('PEAR_MAIL_SMTP_ERROR_RECIPIENT', 10005);
/** Error: Failed to send data */
define('PEAR_MAIL_SMTP_ERROR_DATA', 10006);
/**
* SMTP implementation of the PEAR Mail interface. Requires the Net_SMTP class.
* @access public
* @package Mail
* @version $Revision$
*/
class Mail_smtp extends Mail {
/**
* SMTP connection object.
*
* @var object
* @access private
*/
var $_smtp = null;
/**
* The list of service extension parameters to pass to the Net_SMTP
* mailFrom() command.
*
* @var array
*/
var $_extparams = array();
/**
* The SMTP host to connect to.
*
* @var string
*/
var $host = 'localhost';
/**
* The port the SMTP server is on.
*
* @var integer
*/
var $port = 25;
/**
* Should SMTP authentication be used?
*
* This value may be set to true, false or the name of a specific
* authentication method.
*
* If the value is set to true, the Net_SMTP package will attempt to use
* the best authentication method advertised by the remote SMTP server.
*
* @var mixed
*/
var $auth = false;
/**
* The username to use if the SMTP server requires authentication.
*
* @var string
*/
var $username = '';
/**
* The password to use if the SMTP server requires authentication.
*
* @var string
*/
var $password = '';
/**
* Hostname or domain that will be sent to the remote SMTP server in the
* HELO / EHLO message.
*
* @var string
*/
var $localhost = 'localhost';
/**
* SMTP connection timeout value. NULL indicates no timeout.
*
* @var integer
*/
var $timeout = null;
/**
* Turn on Net_SMTP debugging?
*
* @var boolean $debug
*/
var $debug = false;
/**
* Indicates whether or not the SMTP connection should persist over
* multiple calls to the send() method.
*
* @var boolean
*/
var $persist = false;
/**
* Use SMTP command pipelining (specified in RFC 2920) if the SMTP server
* supports it. This speeds up delivery over high-latency connections. By
* default, use the default value supplied by Net_SMTP.
*
* @var boolean
*/
var $pipelining;
/**
* The list of socket options
*
* @var array
*/
var $socket_options = array();
/**
* Constructor.
*
* Instantiates a new Mail_smtp:: object based on the parameters
* passed in. It looks for the following parameters:
* host The server to connect to. Defaults to localhost.
* port The port to connect to. Defaults to 25.
* auth SMTP authentication. Defaults to none.
* username The username to use for SMTP auth. No default.
* password The password to use for SMTP auth. No default.
* localhost The local hostname / domain. Defaults to localhost.
* timeout The SMTP connection timeout. Defaults to none.
* verp Whether to use VERP or not. Defaults to false.
* DEPRECATED as of 1.2.0 (use setMailParams()).
* debug Activate SMTP debug mode? Defaults to false.
* persist Should the SMTP connection persist?
* pipelining Use SMTP command pipelining
*
* If a parameter is present in the $params array, it replaces the
* default.
*
* @param array Hash containing any parameters different from the
* defaults.
*/
public function __construct($params)
{
if (isset($params['host'])) $this->host = $params['host'];
if (isset($params['port'])) $this->port = $params['port'];
if (isset($params['auth'])) $this->auth = $params['auth'];
if (isset($params['username'])) $this->username = $params['username'];
if (isset($params['password'])) $this->password = $params['password'];
if (isset($params['localhost'])) $this->localhost = $params['localhost'];
if (isset($params['timeout'])) $this->timeout = $params['timeout'];
if (isset($params['debug'])) $this->debug = (bool)$params['debug'];
if (isset($params['persist'])) $this->persist = (bool)$params['persist'];
if (isset($params['pipelining'])) $this->pipelining = (bool)$params['pipelining'];
if (isset($params['socket_options'])) $this->socket_options = $params['socket_options'];
// Deprecated options
if (isset($params['verp'])) {
$this->addServiceExtensionParameter('XVERP', is_bool($params['verp']) ? null : $params['verp']);
}
}
/**
* Destructor implementation to ensure that we disconnect from any
* potentially-alive persistent SMTP connections.
*/
public function __destruct()
{
$this->disconnect();
}
/**
* Implements Mail::send() function using SMTP.
*
* @param mixed $recipients Either a comma-seperated list of recipients
* (RFC822 compliant), or an array of recipients,
* each RFC822 valid. This may contain recipients not
* specified in the headers, for Bcc:, resending
* messages, etc.
*
* @param array $headers The array of headers to send with the mail, in an
* associative array, where the array key is the
* header name (e.g., 'Subject'), and the array value
* is the header value (e.g., 'test'). The header
* produced from those values would be 'Subject:
* test'.
*
* @param string $body The full text of the message body, including any
* MIME parts, etc.
*
* @return mixed Returns true on success, or a PEAR_Error
* containing a descriptive error message on
* failure.
*/
public function send($recipients, $headers, $body)
{
$result = $this->send_or_fail($recipients, $headers, $body);
/* If persistent connections are disabled, destroy our SMTP object. */
if ($this->persist === false) {
$this->disconnect();
}
return $result;
}
protected function send_or_fail($recipients, $headers, $body)
{
/* If we don't already have an SMTP object, create one. */
$result = $this->getSMTPObject();
if (PEAR::isError($result)) {
return $result;
}
if (!is_array($headers)) {
return PEAR::raiseError('$headers must be an array');
}
$this->_sanitizeHeaders($headers);
$headerElements = $this->prepareHeaders($headers);
if (is_a($headerElements, 'PEAR_Error')) {
$this->_smtp->rset();
return $headerElements;
}
list($from, $textHeaders) = $headerElements;
/* Since few MTAs are going to allow this header to be forged
* unless it's in the MAIL FROM: exchange, we'll use
* Return-Path instead of From: if it's set. */
if (!empty($headers['Return-Path'])) {
$from = $headers['Return-Path'];
}
if (!isset($from)) {
$this->_smtp->rset();
return PEAR::raiseError('No From: address has been provided',
PEAR_MAIL_SMTP_ERROR_FROM);
}
$params = null;
if (!empty($this->_extparams)) {
foreach ($this->_extparams as $key => $val) {
$params .= ' ' . $key . (is_null($val) ? '' : '=' . $val);
}
}
if (PEAR::isError($res = $this->_smtp->mailFrom($from, ltrim($params)))) {
$error = $this->_error("Failed to set sender: $from", $res);
$this->_smtp->rset();
return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_SENDER);
}
$recipients = $this->parseRecipients($recipients);
if (is_a($recipients, 'PEAR_Error')) {
$this->_smtp->rset();
return $recipients;
}
foreach ($recipients as $recipient) {
$res = $this->_smtp->rcptTo($recipient);
if (is_a($res, 'PEAR_Error')) {
$error = $this->_error("Failed to add recipient: $recipient", $res);
$this->_smtp->rset();
return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_RECIPIENT);
}
}
/* Send the message's headers and the body as SMTP data. */
$res = $this->_smtp->data($body, $textHeaders);
list(,$args) = $this->_smtp->getResponse();
if (preg_match("/ queued as (.*)/", $args, $queued)) {
$this->queued_as = $queued[1];
}
/* we need the greeting; from it we can extract the authorative name of the mail server we've really connected to.
* ideal if we're connecting to a round-robin of relay servers and need to track which exact one took the email */
$this->greeting = $this->_smtp->getGreeting();
if (is_a($res, 'PEAR_Error')) {
$error = $this->_error('Failed to send data', $res);
$this->_smtp->rset();
return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_DATA);
}
return true;
}
/**
* Connect to the SMTP server by instantiating a Net_SMTP object.
*
* @return mixed Returns a reference to the Net_SMTP object on success, or
* a PEAR_Error containing a descriptive error message on
* failure.
*
* @since 1.2.0
*/
public function getSMTPObject()
{
if (is_object($this->_smtp) !== false) {
return $this->_smtp;
}
include_once 'Net/SMTP.php';
$this->_smtp = new Net_SMTP($this->host,
$this->port,
$this->localhost,
$this->pipelining,
0,
$this->socket_options);
/* If we still don't have an SMTP object at this point, fail. */
if (is_object($this->_smtp) === false) {
return PEAR::raiseError('Failed to create a Net_SMTP object',
PEAR_MAIL_SMTP_ERROR_CREATE);
}
/* Configure the SMTP connection. */
if ($this->debug) {
$this->_smtp->setDebug(true);
}
/* Attempt to connect to the configured SMTP server. */
if (PEAR::isError($res = $this->_smtp->connect($this->timeout))) {
$error = $this->_error('Failed to connect to ' .
$this->host . ':' . $this->port,
$res);
return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_CONNECT);
}
/* Attempt to authenticate if authentication has been enabled. */
if ($this->auth) {
$method = is_string($this->auth) ? $this->auth : '';
if (PEAR::isError($res = $this->_smtp->auth($this->username,
$this->password,
$method))) {
$error = $this->_error("$method authentication failure",
$res);
$this->_smtp->rset();
return PEAR::raiseError($error, PEAR_MAIL_SMTP_ERROR_AUTH);
}
}
return $this->_smtp;
}
/**
* Add parameter associated with a SMTP service extension.
*
* @param string Extension keyword.
* @param string Any value the keyword needs.
*
* @since 1.2.0
*/
public function addServiceExtensionParameter($keyword, $value = null)
{
$this->_extparams[$keyword] = $value;
}
/**
* Disconnect and destroy the current SMTP connection.
*
* @return boolean True if the SMTP connection no longer exists.
*
* @since 1.1.9
*/
public function disconnect()
{
/* If we have an SMTP object, disconnect and destroy it. */
if (is_object($this->_smtp) && $this->_smtp->disconnect()) {
$this->_smtp = null;
}
/* We are disconnected if we no longer have an SMTP object. */
return ($this->_smtp === null);
}
/**
* Build a standardized string describing the current SMTP error.
*
* @param string $text Custom string describing the error context.
* @param object $error Reference to the current PEAR_Error object.
*
* @return string A string describing the current SMTP error.
*
* @since 1.1.7
*/
protected function _error($text, $error)
{
/* Split the SMTP response into a code and a response string. */
list($code, $response) = $this->_smtp->getResponse();
/* Build our standardized error string. */
return $text
. ' [SMTP: ' . $error->getMessage()
. " (code: $code, response: $response)]";
}
}