1249 rader
41 KiB
PHP
1249 rader
41 KiB
PHP
<?php
|
|
/**
|
|
* PHPMailer RFC821 SMTP email transport class.
|
|
* PHP Version 5
|
|
* @package PHPMailer
|
|
* @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
|
|
* @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
|
|
* @author Jim Jagielski (jimjag) <jimjag@gmail.com>
|
|
* @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
|
|
* @author Brent R. Matzelle (original founder)
|
|
* @copyright 2014 Marcus Bointon
|
|
* @copyright 2010 - 2012 Jim Jagielski
|
|
* @copyright 2004 - 2009 Andy Prevost
|
|
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
|
|
* @note This program is distributed in the hope that it will be useful - WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/**
|
|
* PHPMailer RFC821 SMTP email transport class.
|
|
* Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
|
|
* @package PHPMailer
|
|
* @author Chris Ryan
|
|
* @author Marcus Bointon <phpmailer@synchromedia.co.uk>
|
|
*/
|
|
class SMTP
|
|
{
|
|
/**
|
|
* The PHPMailer SMTP version number.
|
|
* @var string
|
|
*/
|
|
const VERSION = '5.2.22';
|
|
|
|
/**
|
|
* SMTP line break constant.
|
|
* @var string
|
|
*/
|
|
const CRLF = "\r\n";
|
|
|
|
/**
|
|
* The SMTP port to use if one is not specified.
|
|
* @var integer
|
|
*/
|
|
const DEFAULT_SMTP_PORT = 25;
|
|
|
|
/**
|
|
* The maximum line length allowed by RFC 2822 section 2.1.1
|
|
* @var integer
|
|
*/
|
|
const MAX_LINE_LENGTH = 998;
|
|
|
|
/**
|
|
* Debug level for no output
|
|
*/
|
|
const DEBUG_OFF = 0;
|
|
|
|
/**
|
|
* Debug level to show client -> server messages
|
|
*/
|
|
const DEBUG_CLIENT = 1;
|
|
|
|
/**
|
|
* Debug level to show client -> server and server -> client messages
|
|
*/
|
|
const DEBUG_SERVER = 2;
|
|
|
|
/**
|
|
* Debug level to show connection status, client -> server and server -> client messages
|
|
*/
|
|
const DEBUG_CONNECTION = 3;
|
|
|
|
/**
|
|
* Debug level to show all messages
|
|
*/
|
|
const DEBUG_LOWLEVEL = 4;
|
|
|
|
/**
|
|
* The PHPMailer SMTP Version number.
|
|
* @var string
|
|
* @deprecated Use the `VERSION` constant instead
|
|
* @see SMTP::VERSION
|
|
*/
|
|
public $Version = '5.2.22';
|
|
|
|
/**
|
|
* SMTP server port number.
|
|
* @var integer
|
|
* @deprecated This is only ever used as a default value, so use the `DEFAULT_SMTP_PORT` constant instead
|
|
* @see SMTP::DEFAULT_SMTP_PORT
|
|
*/
|
|
public $SMTP_PORT = 25;
|
|
|
|
/**
|
|
* SMTP reply line ending.
|
|
* @var string
|
|
* @deprecated Use the `CRLF` constant instead
|
|
* @see SMTP::CRLF
|
|
*/
|
|
public $CRLF = "\r\n";
|
|
|
|
/**
|
|
* Debug output level.
|
|
* Options:
|
|
* * self::DEBUG_OFF (`0`) No debug output, default
|
|
* * self::DEBUG_CLIENT (`1`) Client commands
|
|
* * self::DEBUG_SERVER (`2`) Client commands and server responses
|
|
* * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
|
|
* * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages
|
|
* @var integer
|
|
*/
|
|
public $do_debug = self::DEBUG_OFF;
|
|
|
|
/**
|
|
* How to handle debug output.
|
|
* Options:
|
|
* * `echo` Output plain-text as-is, appropriate for CLI
|
|
* * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
|
|
* * `error_log` Output to error log as configured in php.ini
|
|
*
|
|
* Alternatively, you can provide a callable expecting two params: a message string and the debug level:
|
|
* <code>
|
|
* $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
|
|
* </code>
|
|
* @var string|callable
|
|
*/
|
|
public $Debugoutput = 'echo';
|
|
|
|
/**
|
|
* Whether to use VERP.
|
|
* @link http://en.wikipedia.org/wiki/Variable_envelope_return_path
|
|
* @link http://www.postfix.org/VERP_README.html Info on VERP
|
|
* @var boolean
|
|
*/
|
|
public $do_verp = false;
|
|
|
|
/**
|
|
* The timeout value for connection, in seconds.
|
|
* Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
|
|
* This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
|
|
* @link http://tools.ietf.org/html/rfc2821#section-4.5.3.2
|
|
* @var integer
|
|
*/
|
|
public $Timeout = 300;
|
|
|
|
/**
|
|
* How long to wait for commands to complete, in seconds.
|
|
* Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
|
|
* @var integer
|
|
*/
|
|
public $Timelimit = 300;
|
|
|
|
/**
|
|
* @var array patterns to extract smtp transaction id from smtp reply
|
|
* Only first capture group will be use, use non-capturing group to deal with it
|
|
* Extend this class to override this property to fulfil your needs.
|
|
*/
|
|
protected $smtp_transaction_id_patterns = array(
|
|
'exim' => '/[0-9]{3} OK id=(.*)/',
|
|
'sendmail' => '/[0-9]{3} 2.0.0 (.*) Message/',
|
|
'postfix' => '/[0-9]{3} 2.0.0 Ok: queued as (.*)/'
|
|
);
|
|
|
|
/**
|
|
* The socket for the server connection.
|
|
* @var resource
|
|
*/
|
|
protected $smtp_conn;
|
|
|
|
/**
|
|
* Error information, if any, for the last SMTP command.
|
|
* @var array
|
|
*/
|
|
protected $error = array(
|
|
'error' => '',
|
|
'detail' => '',
|
|
'smtp_code' => '',
|
|
'smtp_code_ex' => ''
|
|
);
|
|
|
|
/**
|
|
* The reply the server sent to us for HELO.
|
|
* If null, no HELO string has yet been received.
|
|
* @var string|null
|
|
*/
|
|
protected $helo_rply = null;
|
|
|
|
/**
|
|
* The set of SMTP extensions sent in reply to EHLO command.
|
|
* Indexes of the array are extension names.
|
|
* Value at index 'HELO' or 'EHLO' (according to command that was sent)
|
|
* represents the server name. In case of HELO it is the only element of the array.
|
|
* Other values can be boolean TRUE or an array containing extension options.
|
|
* If null, no HELO/EHLO string has yet been received.
|
|
* @var array|null
|
|
*/
|
|
protected $server_caps = null;
|
|
|
|
/**
|
|
* The most recent reply received from the server.
|
|
* @var string
|
|
*/
|
|
protected $last_reply = '';
|
|
|
|
/**
|
|
* Output debugging info via a user-selected method.
|
|
* @see SMTP::$Debugoutput
|
|
* @see SMTP::$do_debug
|
|
* @param string $str Debug string to output
|
|
* @param integer $level The debug level of this message; see DEBUG_* constants
|
|
* @return void
|
|
*/
|
|
protected function edebug($str, $level = 0)
|
|
{
|
|
if ($level > $this->do_debug) {
|
|
return;
|
|
}
|
|
//Avoid clash with built-in function names
|
|
if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) {
|
|
call_user_func($this->Debugoutput, $str, $level);
|
|
return;
|
|
}
|
|
switch ($this->Debugoutput) {
|
|
case 'error_log':
|
|
//Don't output, just log
|
|
error_log($str);
|
|
break;
|
|
case 'html':
|
|
//Cleans up output a bit for a better looking, HTML-safe output
|
|
echo htmlentities(
|
|
preg_replace('/[\r\n]+/', '', $str),
|
|
ENT_QUOTES,
|
|
'UTF-8'
|
|
)
|
|
. "<br>\n";
|
|
break;
|
|
case 'echo':
|
|
default:
|
|
//Normalize line breaks
|
|
$str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str);
|
|
echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(
|
|
"\n",
|
|
"\n \t ",
|
|
trim($str)
|
|
)."\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Connect to an SMTP server.
|
|
* @param string $host SMTP server IP or host name
|
|
* @param integer $port The port number to connect to
|
|
* @param integer $timeout How long to wait for the connection to open
|
|
* @param array $options An array of options for stream_context_create()
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function connect($host, $port = null, $timeout = 30, $options = array())
|
|
{
|
|
static $streamok;
|
|
//This is enabled by default since 5.0.0 but some providers disable it
|
|
//Check this once and cache the result
|
|
if (is_null($streamok)) {
|
|
$streamok = function_exists('stream_socket_client');
|
|
}
|
|
// Clear errors to avoid confusion
|
|
$this->setError('');
|
|
// Make sure we are __not__ connected
|
|
if ($this->connected()) {
|
|
// Already connected, generate error
|
|
$this->setError('Already connected to a server');
|
|
return false;
|
|
}
|
|
if (empty($port)) {
|
|
$port = self::DEFAULT_SMTP_PORT;
|
|
}
|
|
// Connect to the SMTP server
|
|
$this->edebug(
|
|
"Connection: opening to $host:$port, timeout=$timeout, options=".var_export($options, true),
|
|
self::DEBUG_CONNECTION
|
|
);
|
|
$errno = 0;
|
|
$errstr = '';
|
|
if ($streamok) {
|
|
$socket_context = stream_context_create($options);
|
|
set_error_handler(array($this, 'errorHandler'));
|
|
$this->smtp_conn = stream_socket_client(
|
|
$host . ":" . $port,
|
|
$errno,
|
|
$errstr,
|
|
$timeout,
|
|
STREAM_CLIENT_CONNECT,
|
|
$socket_context
|
|
);
|
|
restore_error_handler();
|
|
} else {
|
|
//Fall back to fsockopen which should work in more places, but is missing some features
|
|
$this->edebug(
|
|
"Connection: stream_socket_client not available, falling back to fsockopen",
|
|
self::DEBUG_CONNECTION
|
|
);
|
|
set_error_handler(array($this, 'errorHandler'));
|
|
$this->smtp_conn = fsockopen(
|
|
$host,
|
|
$port,
|
|
$errno,
|
|
$errstr,
|
|
$timeout
|
|
);
|
|
restore_error_handler();
|
|
}
|
|
// Verify we connected properly
|
|
if (!is_resource($this->smtp_conn)) {
|
|
$this->setError(
|
|
'Failed to connect to server',
|
|
$errno,
|
|
$errstr
|
|
);
|
|
$this->edebug(
|
|
'SMTP ERROR: ' . $this->error['error']
|
|
. ": $errstr ($errno)",
|
|
self::DEBUG_CLIENT
|
|
);
|
|
return false;
|
|
}
|
|
$this->edebug('Connection: opened', self::DEBUG_CONNECTION);
|
|
// SMTP server can take longer to respond, give longer timeout for first read
|
|
// Windows does not have support for this timeout function
|
|
if (substr(PHP_OS, 0, 3) != 'WIN') {
|
|
$max = ini_get('max_execution_time');
|
|
// Don't bother if unlimited
|
|
if ($max != 0 && $timeout > $max) {
|
|
@set_time_limit($timeout);
|
|
}
|
|
stream_set_timeout($this->smtp_conn, $timeout, 0);
|
|
}
|
|
// Get any announcement
|
|
$announce = $this->get_lines();
|
|
$this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Initiate a TLS (encrypted) session.
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function startTLS()
|
|
{
|
|
if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
|
|
return false;
|
|
}
|
|
|
|
//Allow the best TLS version(s) we can
|
|
$crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
|
|
|
|
//PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
|
|
//so add them back in manually if we can
|
|
if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
|
|
$crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
|
|
$crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
|
|
}
|
|
|
|
// Begin encrypted connection
|
|
if (!stream_socket_enable_crypto(
|
|
$this->smtp_conn,
|
|
true,
|
|
$crypto_method
|
|
)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Perform SMTP authentication.
|
|
* Must be run after hello().
|
|
* @see hello()
|
|
* @param string $username The user name
|
|
* @param string $password The password
|
|
* @param string $authtype The auth type (PLAIN, LOGIN, NTLM, CRAM-MD5, XOAUTH2)
|
|
* @param string $realm The auth realm for NTLM
|
|
* @param string $workstation The auth workstation for NTLM
|
|
* @param null|OAuth $OAuth An optional OAuth instance (@see PHPMailerOAuth)
|
|
* @return bool True if successfully authenticated.* @access public
|
|
*/
|
|
public function authenticate(
|
|
$username,
|
|
$password,
|
|
$authtype = null,
|
|
$realm = '',
|
|
$workstation = '',
|
|
$OAuth = null
|
|
) {
|
|
if (!$this->server_caps) {
|
|
$this->setError('Authentication is not allowed before HELO/EHLO');
|
|
return false;
|
|
}
|
|
|
|
if (array_key_exists('EHLO', $this->server_caps)) {
|
|
// SMTP extensions are available. Let's try to find a proper authentication method
|
|
|
|
if (!array_key_exists('AUTH', $this->server_caps)) {
|
|
$this->setError('Authentication is not allowed at this stage');
|
|
// 'at this stage' means that auth may be allowed after the stage changes
|
|
// e.g. after STARTTLS
|
|
return false;
|
|
}
|
|
|
|
self::edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL);
|
|
self::edebug(
|
|
'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
|
|
self::DEBUG_LOWLEVEL
|
|
);
|
|
|
|
if (empty($authtype)) {
|
|
foreach (array('CRAM-MD5', 'LOGIN', 'PLAIN', 'NTLM', 'XOAUTH2') as $method) {
|
|
if (in_array($method, $this->server_caps['AUTH'])) {
|
|
$authtype = $method;
|
|
break;
|
|
}
|
|
}
|
|
if (empty($authtype)) {
|
|
$this->setError('No supported authentication methods found');
|
|
return false;
|
|
}
|
|
self::edebug('Auth method selected: '.$authtype, self::DEBUG_LOWLEVEL);
|
|
}
|
|
|
|
if (!in_array($authtype, $this->server_caps['AUTH'])) {
|
|
$this->setError("The requested authentication method \"$authtype\" is not supported by the server");
|
|
return false;
|
|
}
|
|
} elseif (empty($authtype)) {
|
|
$authtype = 'LOGIN';
|
|
}
|
|
switch ($authtype) {
|
|
case 'PLAIN':
|
|
// Start authentication
|
|
if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
|
|
return false;
|
|
}
|
|
// Send encoded username and password
|
|
if (!$this->sendCommand(
|
|
'User & Password',
|
|
base64_encode("\0" . $username . "\0" . $password),
|
|
235
|
|
)
|
|
) {
|
|
return false;
|
|
}
|
|
break;
|
|
case 'LOGIN':
|
|
// Start authentication
|
|
if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
|
|
return false;
|
|
}
|
|
if (!$this->sendCommand("Username", base64_encode($username), 334)) {
|
|
return false;
|
|
}
|
|
if (!$this->sendCommand("Password", base64_encode($password), 235)) {
|
|
return false;
|
|
}
|
|
break;
|
|
case 'XOAUTH2':
|
|
//If the OAuth Instance is not set. Can be a case when PHPMailer is used
|
|
//instead of PHPMailerOAuth
|
|
if (is_null($OAuth)) {
|
|
return false;
|
|
}
|
|
$oauth = $OAuth->getOauth64();
|
|
|
|
// Start authentication
|
|
if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
|
|
return false;
|
|
}
|
|
break;
|
|
case 'NTLM':
|
|
/*
|
|
* ntlm_sasl_client.php
|
|
* Bundled with Permission
|
|
*
|
|
* How to telnet in windows:
|
|
* http://technet.microsoft.com/en-us/library/aa995718%28EXCHG.65%29.aspx
|
|
* PROTOCOL Docs http://curl.haxx.se/rfc/ntlm.html#ntlmSmtpAuthentication
|
|
*/
|
|
require_once 'extras/ntlm_sasl_client.php';
|
|
$temp = new stdClass;
|
|
$ntlm_client = new ntlm_sasl_client_class;
|
|
//Check that functions are available
|
|
if (!$ntlm_client->initialize($temp)) {
|
|
$this->setError($temp->error);
|
|
$this->edebug(
|
|
'You need to enable some modules in your php.ini file: '
|
|
. $this->error['error'],
|
|
self::DEBUG_CLIENT
|
|
);
|
|
return false;
|
|
}
|
|
//msg1
|
|
$msg1 = $ntlm_client->typeMsg1($realm, $workstation); //msg1
|
|
|
|
if (!$this->sendCommand(
|
|
'AUTH NTLM',
|
|
'AUTH NTLM ' . base64_encode($msg1),
|
|
334
|
|
)
|
|
) {
|
|
return false;
|
|
}
|
|
//Though 0 based, there is a white space after the 3 digit number
|
|
//msg2
|
|
$challenge = substr($this->last_reply, 3);
|
|
$challenge = base64_decode($challenge);
|
|
$ntlm_res = $ntlm_client->NTLMResponse(
|
|
substr($challenge, 24, 8),
|
|
$password
|
|
);
|
|
//msg3
|
|
$msg3 = $ntlm_client->typeMsg3(
|
|
$ntlm_res,
|
|
$username,
|
|
$realm,
|
|
$workstation
|
|
);
|
|
// send encoded username
|
|
return $this->sendCommand('Username', base64_encode($msg3), 235);
|
|
case 'CRAM-MD5':
|
|
// Start authentication
|
|
if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
|
|
return false;
|
|
}
|
|
// Get the challenge
|
|
$challenge = base64_decode(substr($this->last_reply, 4));
|
|
|
|
// Build the response
|
|
$response = $username . ' ' . $this->hmac($challenge, $password);
|
|
|
|
// send encoded credentials
|
|
return $this->sendCommand('Username', base64_encode($response), 235);
|
|
default:
|
|
$this->setError("Authentication method \"$authtype\" is not supported");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Calculate an MD5 HMAC hash.
|
|
* Works like hash_hmac('md5', $data, $key)
|
|
* in case that function is not available
|
|
* @param string $data The data to hash
|
|
* @param string $key The key to hash with
|
|
* @access protected
|
|
* @return string
|
|
*/
|
|
protected function hmac($data, $key)
|
|
{
|
|
if (function_exists('hash_hmac')) {
|
|
return hash_hmac('md5', $data, $key);
|
|
}
|
|
|
|
// The following borrowed from
|
|
// http://php.net/manual/en/function.mhash.php#27225
|
|
|
|
// RFC 2104 HMAC implementation for php.
|
|
// Creates an md5 HMAC.
|
|
// Eliminates the need to install mhash to compute a HMAC
|
|
// by Lance Rushing
|
|
|
|
$bytelen = 64; // byte length for md5
|
|
if (strlen($key) > $bytelen) {
|
|
$key = pack('H*', md5($key));
|
|
}
|
|
$key = str_pad($key, $bytelen, chr(0x00));
|
|
$ipad = str_pad('', $bytelen, chr(0x36));
|
|
$opad = str_pad('', $bytelen, chr(0x5c));
|
|
$k_ipad = $key ^ $ipad;
|
|
$k_opad = $key ^ $opad;
|
|
|
|
return md5($k_opad . pack('H*', md5($k_ipad . $data)));
|
|
}
|
|
|
|
/**
|
|
* Check connection state.
|
|
* @access public
|
|
* @return boolean True if connected.
|
|
*/
|
|
public function connected()
|
|
{
|
|
if (is_resource($this->smtp_conn)) {
|
|
$sock_status = stream_get_meta_data($this->smtp_conn);
|
|
if ($sock_status['eof']) {
|
|
// The socket is valid but we are not connected
|
|
$this->edebug(
|
|
'SMTP NOTICE: EOF caught while checking if connected',
|
|
self::DEBUG_CLIENT
|
|
);
|
|
$this->close();
|
|
return false;
|
|
}
|
|
return true; // everything looks good
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Close the socket and clean up the state of the class.
|
|
* Don't use this function without first trying to use QUIT.
|
|
* @see quit()
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
public function close()
|
|
{
|
|
$this->setError('');
|
|
$this->server_caps = null;
|
|
$this->helo_rply = null;
|
|
if (is_resource($this->smtp_conn)) {
|
|
// close the connection and cleanup
|
|
fclose($this->smtp_conn);
|
|
$this->smtp_conn = null; //Makes for cleaner serialization
|
|
$this->edebug('Connection: closed', self::DEBUG_CONNECTION);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP DATA command.
|
|
* Issues a data command and sends the msg_data to the server,
|
|
* finializing the mail transaction. $msg_data is the message
|
|
* that is to be send with the headers. Each header needs to be
|
|
* on a single line followed by a <CRLF> with the message headers
|
|
* and the message body being separated by and additional <CRLF>.
|
|
* Implements rfc 821: DATA <CRLF>
|
|
* @param string $msg_data Message data to send
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function data($msg_data)
|
|
{
|
|
//This will use the standard timelimit
|
|
if (!$this->sendCommand('DATA', 'DATA', 354)) {
|
|
return false;
|
|
}
|
|
|
|
/* The server is ready to accept data!
|
|
* According to rfc821 we should not send more than 1000 characters on a single line (including the CRLF)
|
|
* so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
|
|
* smaller lines to fit within the limit.
|
|
* We will also look for lines that start with a '.' and prepend an additional '.'.
|
|
* NOTE: this does not count towards line-length limit.
|
|
*/
|
|
|
|
// Normalize line breaks before exploding
|
|
$lines = explode("\n", str_replace(array("\r\n", "\r"), "\n", $msg_data));
|
|
|
|
/* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
|
|
* of the first line (':' separated) does not contain a space then it _should_ be a header and we will
|
|
* process all lines before a blank line as headers.
|
|
*/
|
|
|
|
$field = substr($lines[0], 0, strpos($lines[0], ':'));
|
|
$in_headers = false;
|
|
if (!empty($field) && strpos($field, ' ') === false) {
|
|
$in_headers = true;
|
|
}
|
|
|
|
foreach ($lines as $line) {
|
|
$lines_out = array();
|
|
if ($in_headers and $line == '') {
|
|
$in_headers = false;
|
|
}
|
|
//Break this line up into several smaller lines if it's too long
|
|
//Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
|
|
while (isset($line[self::MAX_LINE_LENGTH])) {
|
|
//Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
|
|
//so as to avoid breaking in the middle of a word
|
|
$pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
|
|
//Deliberately matches both false and 0
|
|
if (!$pos) {
|
|
//No nice break found, add a hard break
|
|
$pos = self::MAX_LINE_LENGTH - 1;
|
|
$lines_out[] = substr($line, 0, $pos);
|
|
$line = substr($line, $pos);
|
|
} else {
|
|
//Break at the found point
|
|
$lines_out[] = substr($line, 0, $pos);
|
|
//Move along by the amount we dealt with
|
|
$line = substr($line, $pos + 1);
|
|
}
|
|
//If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
|
|
if ($in_headers) {
|
|
$line = "\t" . $line;
|
|
}
|
|
}
|
|
$lines_out[] = $line;
|
|
|
|
//Send the lines to the server
|
|
foreach ($lines_out as $line_out) {
|
|
//RFC2821 section 4.5.2
|
|
if (!empty($line_out) and $line_out[0] == '.') {
|
|
$line_out = '.' . $line_out;
|
|
}
|
|
$this->client_send($line_out . self::CRLF);
|
|
}
|
|
}
|
|
|
|
//Message data has been sent, complete the command
|
|
//Increase timelimit for end of DATA command
|
|
$savetimelimit = $this->Timelimit;
|
|
$this->Timelimit = $this->Timelimit * 2;
|
|
$result = $this->sendCommand('DATA END', '.', 250);
|
|
//Restore timelimit
|
|
$this->Timelimit = $savetimelimit;
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP HELO or EHLO command.
|
|
* Used to identify the sending server to the receiving server.
|
|
* This makes sure that client and server are in a known state.
|
|
* Implements RFC 821: HELO <SP> <domain> <CRLF>
|
|
* and RFC 2821 EHLO.
|
|
* @param string $host The host name or IP to connect to
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function hello($host = '')
|
|
{
|
|
//Try extended hello first (RFC 2821)
|
|
return (boolean)($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host));
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP HELO or EHLO command.
|
|
* Low-level implementation used by hello()
|
|
* @see hello()
|
|
* @param string $hello The HELO string
|
|
* @param string $host The hostname to say we are
|
|
* @access protected
|
|
* @return boolean
|
|
*/
|
|
protected function sendHello($hello, $host)
|
|
{
|
|
$noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
|
|
$this->helo_rply = $this->last_reply;
|
|
if ($noerror) {
|
|
$this->parseHelloFields($hello);
|
|
} else {
|
|
$this->server_caps = null;
|
|
}
|
|
return $noerror;
|
|
}
|
|
|
|
/**
|
|
* Parse a reply to HELO/EHLO command to discover server extensions.
|
|
* In case of HELO, the only parameter that can be discovered is a server name.
|
|
* @access protected
|
|
* @param string $type - 'HELO' or 'EHLO'
|
|
*/
|
|
protected function parseHelloFields($type)
|
|
{
|
|
$this->server_caps = array();
|
|
$lines = explode("\n", $this->helo_rply);
|
|
|
|
foreach ($lines as $n => $s) {
|
|
//First 4 chars contain response code followed by - or space
|
|
$s = trim(substr($s, 4));
|
|
if (empty($s)) {
|
|
continue;
|
|
}
|
|
$fields = explode(' ', $s);
|
|
if (!empty($fields)) {
|
|
if (!$n) {
|
|
$name = $type;
|
|
$fields = $fields[0];
|
|
} else {
|
|
$name = array_shift($fields);
|
|
switch ($name) {
|
|
case 'SIZE':
|
|
$fields = ($fields ? $fields[0] : 0);
|
|
break;
|
|
case 'AUTH':
|
|
if (!is_array($fields)) {
|
|
$fields = array();
|
|
}
|
|
break;
|
|
default:
|
|
$fields = true;
|
|
}
|
|
}
|
|
$this->server_caps[$name] = $fields;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP MAIL command.
|
|
* Starts a mail transaction from the email address specified in
|
|
* $from. Returns true if successful or false otherwise. If True
|
|
* the mail transaction is started and then one or more recipient
|
|
* commands may be called followed by a data command.
|
|
* Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
|
|
* @param string $from Source address of this message
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function mail($from)
|
|
{
|
|
$useVerp = ($this->do_verp ? ' XVERP' : '');
|
|
return $this->sendCommand(
|
|
'MAIL FROM',
|
|
'MAIL FROM:<' . $from . '>' . $useVerp,
|
|
250
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP QUIT command.
|
|
* Closes the socket if there is no error or the $close_on_error argument is true.
|
|
* Implements from rfc 821: QUIT <CRLF>
|
|
* @param boolean $close_on_error Should the connection close if an error occurs?
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function quit($close_on_error = true)
|
|
{
|
|
$noerror = $this->sendCommand('QUIT', 'QUIT', 221);
|
|
$err = $this->error; //Save any error
|
|
if ($noerror or $close_on_error) {
|
|
$this->close();
|
|
$this->error = $err; //Restore any error from the quit command
|
|
}
|
|
return $noerror;
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP RCPT command.
|
|
* Sets the TO argument to $toaddr.
|
|
* Returns true if the recipient was accepted false if it was rejected.
|
|
* Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
|
|
* @param string $address The address the message is being sent to
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function recipient($address)
|
|
{
|
|
return $this->sendCommand(
|
|
'RCPT TO',
|
|
'RCPT TO:<' . $address . '>',
|
|
array(250, 251)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP RSET command.
|
|
* Abort any transaction that is currently in progress.
|
|
* Implements rfc 821: RSET <CRLF>
|
|
* @access public
|
|
* @return boolean True on success.
|
|
*/
|
|
public function reset()
|
|
{
|
|
return $this->sendCommand('RSET', 'RSET', 250);
|
|
}
|
|
|
|
/**
|
|
* Send a command to an SMTP server and check its return code.
|
|
* @param string $command The command name - not sent to the server
|
|
* @param string $commandstring The actual command to send
|
|
* @param integer|array $expect One or more expected integer success codes
|
|
* @access protected
|
|
* @return boolean True on success.
|
|
*/
|
|
protected function sendCommand($command, $commandstring, $expect)
|
|
{
|
|
if (!$this->connected()) {
|
|
$this->setError("Called $command without being connected");
|
|
return false;
|
|
}
|
|
//Reject line breaks in all commands
|
|
if (strpos($commandstring, "\n") !== false or strpos($commandstring, "\r") !== false) {
|
|
$this->setError("Command '$command' contained line breaks");
|
|
return false;
|
|
}
|
|
$this->client_send($commandstring . self::CRLF);
|
|
|
|
$this->last_reply = $this->get_lines();
|
|
// Fetch SMTP code and possible error code explanation
|
|
$matches = array();
|
|
if (preg_match("/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/", $this->last_reply, $matches)) {
|
|
$code = $matches[1];
|
|
$code_ex = (count($matches) > 2 ? $matches[2] : null);
|
|
// Cut off error code from each response line
|
|
$detail = preg_replace(
|
|
"/{$code}[ -]".($code_ex ? str_replace('.', '\\.', $code_ex).' ' : '')."/m",
|
|
'',
|
|
$this->last_reply
|
|
);
|
|
} else {
|
|
// Fall back to simple parsing if regex fails
|
|
$code = substr($this->last_reply, 0, 3);
|
|
$code_ex = null;
|
|
$detail = substr($this->last_reply, 4);
|
|
}
|
|
|
|
$this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
|
|
|
|
if (!in_array($code, (array)$expect)) {
|
|
$this->setError(
|
|
"$command command failed",
|
|
$detail,
|
|
$code,
|
|
$code_ex
|
|
);
|
|
$this->edebug(
|
|
'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
|
|
self::DEBUG_CLIENT
|
|
);
|
|
return false;
|
|
}
|
|
|
|
$this->setError('');
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP SAML command.
|
|
* Starts a mail transaction from the email address specified in $from.
|
|
* Returns true if successful or false otherwise. If True
|
|
* the mail transaction is started and then one or more recipient
|
|
* commands may be called followed by a data command. This command
|
|
* will send the message to the users terminal if they are logged
|
|
* in and send them an email.
|
|
* Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
|
|
* @param string $from The address the message is from
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function sendAndMail($from)
|
|
{
|
|
return $this->sendCommand('SAML', "SAML FROM:$from", 250);
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP VRFY command.
|
|
* @param string $name The name to verify
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function verify($name)
|
|
{
|
|
return $this->sendCommand('VRFY', "VRFY $name", array(250, 251));
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP NOOP command.
|
|
* Used to keep keep-alives alive, doesn't actually do anything
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function noop()
|
|
{
|
|
return $this->sendCommand('NOOP', 'NOOP', 250);
|
|
}
|
|
|
|
/**
|
|
* Send an SMTP TURN command.
|
|
* This is an optional command for SMTP that this class does not support.
|
|
* This method is here to make the RFC821 Definition complete for this class
|
|
* and _may_ be implemented in future
|
|
* Implements from rfc 821: TURN <CRLF>
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function turn()
|
|
{
|
|
$this->setError('The SMTP TURN command is not implemented');
|
|
$this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Send raw data to the server.
|
|
* @param string $data The data to send
|
|
* @access public
|
|
* @return integer|boolean The number of bytes sent to the server or false on error
|
|
*/
|
|
public function client_send($data)
|
|
{
|
|
$this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT);
|
|
return fwrite($this->smtp_conn, $data);
|
|
}
|
|
|
|
/**
|
|
* Get the latest error.
|
|
* @access public
|
|
* @return array
|
|
*/
|
|
public function getError()
|
|
{
|
|
return $this->error;
|
|
}
|
|
|
|
/**
|
|
* Get SMTP extensions available on the server
|
|
* @access public
|
|
* @return array|null
|
|
*/
|
|
public function getServerExtList()
|
|
{
|
|
return $this->server_caps;
|
|
}
|
|
|
|
/**
|
|
* A multipurpose method
|
|
* The method works in three ways, dependent on argument value and current state
|
|
* 1. HELO/EHLO was not sent - returns null and set up $this->error
|
|
* 2. HELO was sent
|
|
* $name = 'HELO': returns server name
|
|
* $name = 'EHLO': returns boolean false
|
|
* $name = any string: returns null and set up $this->error
|
|
* 3. EHLO was sent
|
|
* $name = 'HELO'|'EHLO': returns server name
|
|
* $name = any string: if extension $name exists, returns boolean True
|
|
* or its options. Otherwise returns boolean False
|
|
* In other words, one can use this method to detect 3 conditions:
|
|
* - null returned: handshake was not or we don't know about ext (refer to $this->error)
|
|
* - false returned: the requested feature exactly not exists
|
|
* - positive value returned: the requested feature exists
|
|
* @param string $name Name of SMTP extension or 'HELO'|'EHLO'
|
|
* @return mixed
|
|
*/
|
|
public function getServerExt($name)
|
|
{
|
|
if (!$this->server_caps) {
|
|
$this->setError('No HELO/EHLO was sent');
|
|
return null;
|
|
}
|
|
|
|
// the tight logic knot ;)
|
|
if (!array_key_exists($name, $this->server_caps)) {
|
|
if ($name == 'HELO') {
|
|
return $this->server_caps['EHLO'];
|
|
}
|
|
if ($name == 'EHLO' || array_key_exists('EHLO', $this->server_caps)) {
|
|
return false;
|
|
}
|
|
$this->setError('HELO handshake was used. Client knows nothing about server extensions');
|
|
return null;
|
|
}
|
|
|
|
return $this->server_caps[$name];
|
|
}
|
|
|
|
/**
|
|
* Get the last reply from the server.
|
|
* @access public
|
|
* @return string
|
|
*/
|
|
public function getLastReply()
|
|
{
|
|
return $this->last_reply;
|
|
}
|
|
|
|
/**
|
|
* Read the SMTP server's response.
|
|
* Either before eof or socket timeout occurs on the operation.
|
|
* With SMTP we can tell if we have more lines to read if the
|
|
* 4th character is '-' symbol. If it is a space then we don't
|
|
* need to read anything else.
|
|
* @access protected
|
|
* @return string
|
|
*/
|
|
protected function get_lines()
|
|
{
|
|
// If the connection is bad, give up straight away
|
|
if (!is_resource($this->smtp_conn)) {
|
|
return '';
|
|
}
|
|
$data = '';
|
|
$endtime = 0;
|
|
stream_set_timeout($this->smtp_conn, $this->Timeout);
|
|
if ($this->Timelimit > 0) {
|
|
$endtime = time() + $this->Timelimit;
|
|
}
|
|
while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
|
|
$str = @fgets($this->smtp_conn, 515);
|
|
$this->edebug("SMTP -> get_lines(): \$data is \"$data\"", self::DEBUG_LOWLEVEL);
|
|
$this->edebug("SMTP -> get_lines(): \$str is \"$str\"", self::DEBUG_LOWLEVEL);
|
|
$data .= $str;
|
|
// If 4th character is a space, we are done reading, break the loop, micro-optimisation over strlen
|
|
if ((isset($str[3]) and $str[3] == ' ')) {
|
|
break;
|
|
}
|
|
// Timed-out? Log and break
|
|
$info = stream_get_meta_data($this->smtp_conn);
|
|
if ($info['timed_out']) {
|
|
$this->edebug(
|
|
'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
|
|
self::DEBUG_LOWLEVEL
|
|
);
|
|
break;
|
|
}
|
|
// Now check if reads took too long
|
|
if ($endtime and time() > $endtime) {
|
|
$this->edebug(
|
|
'SMTP -> get_lines(): timelimit reached ('.
|
|
$this->Timelimit . ' sec)',
|
|
self::DEBUG_LOWLEVEL
|
|
);
|
|
break;
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Enable or disable VERP address generation.
|
|
* @param boolean $enabled
|
|
*/
|
|
public function setVerp($enabled = false)
|
|
{
|
|
$this->do_verp = $enabled;
|
|
}
|
|
|
|
/**
|
|
* Get VERP address generation mode.
|
|
* @return boolean
|
|
*/
|
|
public function getVerp()
|
|
{
|
|
return $this->do_verp;
|
|
}
|
|
|
|
/**
|
|
* Set error messages and codes.
|
|
* @param string $message The error message
|
|
* @param string $detail Further detail on the error
|
|
* @param string $smtp_code An associated SMTP error code
|
|
* @param string $smtp_code_ex Extended SMTP code
|
|
*/
|
|
protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
|
|
{
|
|
$this->error = array(
|
|
'error' => $message,
|
|
'detail' => $detail,
|
|
'smtp_code' => $smtp_code,
|
|
'smtp_code_ex' => $smtp_code_ex
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Set debug output method.
|
|
* @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it.
|
|
*/
|
|
public function setDebugOutput($method = 'echo')
|
|
{
|
|
$this->Debugoutput = $method;
|
|
}
|
|
|
|
/**
|
|
* Get debug output method.
|
|
* @return string
|
|
*/
|
|
public function getDebugOutput()
|
|
{
|
|
return $this->Debugoutput;
|
|
}
|
|
|
|
/**
|
|
* Set debug output level.
|
|
* @param integer $level
|
|
*/
|
|
public function setDebugLevel($level = 0)
|
|
{
|
|
$this->do_debug = $level;
|
|
}
|
|
|
|
/**
|
|
* Get debug output level.
|
|
* @return integer
|
|
*/
|
|
public function getDebugLevel()
|
|
{
|
|
return $this->do_debug;
|
|
}
|
|
|
|
/**
|
|
* Set SMTP timeout.
|
|
* @param integer $timeout
|
|
*/
|
|
public function setTimeout($timeout = 0)
|
|
{
|
|
$this->Timeout = $timeout;
|
|
}
|
|
|
|
/**
|
|
* Get SMTP timeout.
|
|
* @return integer
|
|
*/
|
|
public function getTimeout()
|
|
{
|
|
return $this->Timeout;
|
|
}
|
|
|
|
/**
|
|
* Reports an error number and string.
|
|
* @param integer $errno The error number returned by PHP.
|
|
* @param string $errmsg The error message returned by PHP.
|
|
*/
|
|
protected function errorHandler($errno, $errmsg)
|
|
{
|
|
$notice = 'Connection: Failed to connect to server.';
|
|
$this->setError(
|
|
$notice,
|
|
$errno,
|
|
$errmsg
|
|
);
|
|
$this->edebug(
|
|
$notice . ' Error number ' . $errno . '. "Error notice: ' . $errmsg,
|
|
self::DEBUG_CONNECTION
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Will return the ID of the last smtp transaction based on a list of patterns provided
|
|
* in SMTP::$smtp_transaction_id_patterns.
|
|
* If no reply has been received yet, it will return null.
|
|
* If no pattern has been matched, it will return false.
|
|
* @return bool|null|string
|
|
*/
|
|
public function getLastTransactionID()
|
|
{
|
|
$reply = $this->getLastReply();
|
|
|
|
if (empty($reply)) {
|
|
return null;
|
|
}
|
|
|
|
foreach($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
|
|
if(preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
|
|
return $matches[1];
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|