<?php
-/*~ class.smtp.php
-.---------------------------------------------------------------------------.
-| Software: PHPMailer - PHP email class |
-| Version: 5.2.1 |
-| Site: https://code.google.com/a/apache-extras.org/p/phpmailer/ |
-| ------------------------------------------------------------------------- |
-| Admin: Jim Jagielski (project admininistrator) |
-| Authors: Andy Prevost (codeworxtech) codeworxtech@users.sourceforge.net |
-| : Marcus Bointon (coolbru) coolbru@users.sourceforge.net |
-| : Jim Jagielski (jimjag) jimjag@gmail.com |
-| Founder: Brent R. Matzelle (original founder) |
-| Copyright (c) 2010-2012, Jim Jagielski. All Rights Reserved. |
-| Copyright (c) 2004-2009, Andy Prevost. All Rights Reserved. |
-| Copyright (c) 2001-2003, Brent R. Matzelle |
-| ------------------------------------------------------------------------- |
-| License: Distributed under the Lesser General Public License (LGPL) |
-| http://www.gnu.org/copyleft/lesser.html |
-| 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 - PHP SMTP email transport class
- * NOTE: Designed for use with PHP version 5 and up
+ * PHPMailer RFC821 SMTP email transport class.
+ * PHP Version 5
* @package PHPMailer
- * @author Andy Prevost
- * @author Marcus Bointon
- * @copyright 2004 - 2008 Andy Prevost
- * @author Jim Jagielski
+ * @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
- * @license http://www.gnu.org/copyleft/lesser.html Distributed under the Lesser General Public License (LGPL)
- * @version $Id: class.smtp.php 450 2010-06-23 16:46:33Z coolbru $
+ * @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.
*/
/**
- * SMTP is rfc 821 compliant and implements all the rfc 821 SMTP
- * commands except TURN which will always return a not implemented
- * error. SMTP also provides some utility methods for sending mail
- * to an SMTP server.
- * original author: Chris Ryan
+ * 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;
-class SMTP {
- /**
- * SMTP server port
- * @var int
- */
- public $SMTP_PORT = 25;
-
- /**
- * SMTP reply line ending
- * @var string
- */
- public $CRLF = "\r\n";
-
- /**
- * Sets whether debugging is turned on
- * @var bool
- */
- public $do_debug; // the level of debug to perform
-
- /**
- * Sets VERP use on/off (default is off)
- * @var bool
- */
- public $do_verp = false;
-
- /**
- * Sets the SMTP PHPMailer Version number
- * @var string
- */
- public $Version = '5.2.1';
-
- /////////////////////////////////////////////////
- // PROPERTIES, PRIVATE AND PROTECTED
- /////////////////////////////////////////////////
-
- private $smtp_conn; // the socket to the server
- private $error; // error if any on the last call
- private $helo_rply; // the reply the server sent to us for HELO
-
- /**
- * Initialize the class so that the data is in a known state.
- * @access public
- * @return void
- */
- public function __construct() {
- $this->smtp_conn = 0;
- $this->error = null;
- $this->helo_rply = null;
-
- $this->do_debug = 0;
- }
-
- /////////////////////////////////////////////////
- // CONNECTION FUNCTIONS
- /////////////////////////////////////////////////
-
- /**
- * Connect to the server specified on the port specified.
- * If the port is not specified use the default SMTP_PORT.
- * If tval is specified then a connection will try and be
- * established with the server for that number of seconds.
- * If tval is not specified the default is 30 seconds to
- * try on the connection.
- *
- * SMTP CODE SUCCESS: 220
- * SMTP CODE FAILURE: 421
- * @access public
- * @return bool
- */
- public function Connect($host, $port = 0, $tval = 30) {
- // set the error val to null so there is no confusion
- $this->error = null;
-
- // make sure we are __not__ connected
- if($this->connected()) {
- // already connected, generate error
- $this->error = array("error" => "Already connected to a server");
- return false;
- }
-
- if(empty($port)) {
- $port = $this->SMTP_PORT;
- }
-
- // connect to the smtp server
- $this->smtp_conn = @fsockopen($host, // the host of the server
- $port, // the port to use
- $errno, // error number if any
- $errstr, // error message if any
- $tval); // give up after ? secs
- // verify we connected properly
- if(empty($this->smtp_conn)) {
- $this->error = array("error" => "Failed to connect to server",
- "errno" => $errno,
- "errstr" => $errstr);
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": $errstr ($errno)" . $this->CRLF . '<br />';
- }
- return false;
- }
-
- // SMTP server can take longer to respond, give longer timeout for first read
- // Windows does not have support for this timeout function
- if(substr(PHP_OS, 0, 3) != "WIN")
- socket_set_timeout($this->smtp_conn, $tval, 0);
-
- // get any announcement
- $announce = $this->get_lines();
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $announce . $this->CRLF . '<br />';
- }
-
- return true;
- }
-
- /**
- * Initiate a TLS communication with the server.
- *
- * SMTP CODE 220 Ready to start TLS
- * SMTP CODE 501 Syntax error (no parameters allowed)
- * SMTP CODE 454 TLS not available due to temporary reason
- * @access public
- * @return bool success
- */
- public function StartTLS() {
- $this->error = null; # to avoid confusion
-
- if(!$this->connected()) {
- $this->error = array("error" => "Called StartTLS() without being connected");
- return false;
- }
-
- fputs($this->smtp_conn,"STARTTLS" . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 220) {
- $this->error =
- array("error" => "STARTTLS not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- // Begin encrypted connection
- if(!stream_socket_enable_crypto($this->smtp_conn, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
- return false;
- }
-
- return true;
- }
-
- /**
- * Performs SMTP authentication. Must be run after running the
- * Hello() method. Returns true if successfully authenticated.
- * @access public
- * @return bool
- */
- public function Authenticate($username, $password) {
- // Start authentication
- fputs($this->smtp_conn,"AUTH LOGIN" . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($code != 334) {
- $this->error =
- array("error" => "AUTH not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- // Send encoded username
- fputs($this->smtp_conn, base64_encode($username) . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($code != 334) {
- $this->error =
- array("error" => "Username not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- // Send encoded password
- fputs($this->smtp_conn, base64_encode($password) . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($code != 235) {
- $this->error =
- array("error" => "Password not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- return true;
- }
-
- /**
- * Returns true if connected to a server otherwise false
- * @access public
- * @return bool
- */
- public function Connected() {
- if(!empty($this->smtp_conn)) {
- $sock_status = socket_get_status($this->smtp_conn);
- if($sock_status["eof"]) {
- // the socket is valid but we are not connected
- if($this->do_debug >= 1) {
- echo "SMTP -> NOTICE:" . $this->CRLF . "EOF caught while checking if connected";
- }
- $this->Close();
+ /**
+ * 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, CRAM-MD5)
+ * @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') 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 '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;
- }
- return true; // everything looks good
- }
- return false;
- }
-
- /**
- * Closes the socket and cleans up the state of the class.
- * It is not considered good to use this function without
- * first trying to use QUIT.
- * @access public
- * @return void
- */
- public function Close() {
- $this->error = null; // so there is no confusion
- $this->helo_rply = null;
- if(!empty($this->smtp_conn)) {
- // close the connection and cleanup
- fclose($this->smtp_conn);
- $this->smtp_conn = 0;
- }
- }
-
- /////////////////////////////////////////////////
- // SMTP COMMANDS
- /////////////////////////////////////////////////
-
- /**
- * Issues a data command and sends the msg_data to the server
- * finializing the mail transaction. $msg_data is the message
- * that is to be send with the headers. Each header needs to be
- * on a single line followed by a <CRLF> with the message headers
- * and the message body being seperated by and additional <CRLF>.
- *
- * Implements rfc 821: DATA <CRLF>
- *
- * SMTP CODE INTERMEDIATE: 354
- * [data]
- * <CRLF>.<CRLF>
- * SMTP CODE SUCCESS: 250
- * SMTP CODE FAILURE: 552,554,451,452
- * SMTP CODE FAILURE: 451,554
- * SMTP CODE ERROR : 500,501,503,421
- * @access public
- * @return bool
- */
- public function Data($msg_data) {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Data() without being connected");
- return false;
- }
-
- fputs($this->smtp_conn,"DATA" . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 354) {
- $this->error =
- array("error" => "DATA command not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- /* the server is ready to accept data!
- * according to rfc 821 we should not send more than 1000
- * including the CRLF
- * characters on a single line 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.
- * in addition we will be looking for lines that start with
- * a period '.' and append and additional period '.' to that
- * line. NOTE: this does not count towards limit.
- */
-
- // normalize the line breaks so we know the explode works
- $msg_data = str_replace("\r\n","\n",$msg_data);
- $msg_data = str_replace("\r","\n",$msg_data);
- $lines = explode("\n",$msg_data);
-
- /* we need to find a good way to determine is headers are
- * in the msg_data or if it is a straight msg body
- * currently I am assuming rfc 822 definitions of msg headers
- * and if the first field of the first line (':' sperated)
- * does not contain a space then it _should_ be a header
- * and we can process all lines before a blank "" line as
- * headers.
- */
-
- $field = substr($lines[0],0,strpos($lines[0],":"));
- $in_headers = false;
- if(!empty($field) && !strstr($field," ")) {
- $in_headers = true;
- }
-
- $max_line_length = 998; // used below; set here for ease in change
-
- while(list(,$line) = @each($lines)) {
- $lines_out = null;
- if($line == "" && $in_headers) {
+ }
+
+ /**
+ * 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], ':'));
$in_headers = false;
- }
- // ok we need to break this line up into several smaller lines
- while(strlen($line) > $max_line_length) {
- $pos = strrpos(substr($line,0,$max_line_length)," ");
-
- // Patch to fix DOS attack
- if(!$pos) {
- $pos = $max_line_length - 1;
- $lines_out[] = substr($line,0,$pos);
- $line = substr($line,$pos);
+ if (!empty($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 {
- $lines_out[] = substr($line,0,$pos);
- $line = substr($line,$pos + 1);
+ $this->server_caps = null;
}
+ return $noerror;
+ }
- /* if processing headers add a LWSP-char to the front of new line
- * rfc 822 on long msg headers
- */
- if($in_headers) {
- $line = "\t" . $line;
- }
- }
- $lines_out[] = $line;
-
- // send the lines to the server
- while(list(,$line_out) = @each($lines_out)) {
- if(strlen($line_out) > 0)
- {
- if(substr($line_out, 0, 1) == ".") {
- $line_out = "." . $line_out;
- }
- }
- fputs($this->smtp_conn,$line_out . $this->CRLF);
- }
- }
-
- // message data has been sent
- fputs($this->smtp_conn, $this->CRLF . "." . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250) {
- $this->error =
- array("error" => "DATA not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
- return true;
- }
-
- /**
- * Sends the HELO command to the smtp server.
- * This makes sure that we and the server are in
- * the same known state.
- *
- * Implements from rfc 821: HELO <SP> <domain> <CRLF>
- *
- * SMTP CODE SUCCESS: 250
- * SMTP CODE ERROR : 500, 501, 504, 421
- * @access public
- * @return bool
- */
- public function Hello($host = '') {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Hello() without being connected");
- return false;
- }
-
- // if hostname for HELO was not specified send default
- if(empty($host)) {
- // determine appropriate default to send to server
- $host = "localhost";
- }
-
- // Send extended hello first (RFC 2821)
- if(!$this->SendHello("EHLO", $host)) {
- if(!$this->SendHello("HELO", $host)) {
+ /**
+ * 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: ' . $this->error['error'], self::DEBUG_CLIENT);
return false;
- }
- }
-
- return true;
- }
-
- /**
- * Sends a HELO/EHLO command.
- * @access private
- * @return bool
- */
- private function SendHello($hello, $host) {
- fputs($this->smtp_conn, $hello . " " . $host . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER: " . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250) {
- $this->error =
- array("error" => $hello . " not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- $this->helo_rply = $rply;
-
- return true;
- }
-
- /**
- * Starts a mail transaction from the email address specified in
- * $from. Returns true if successful or false otherwise. If True
- * the mail transaction is started and then one or more Recipient
- * commands may be called followed by a Data command.
- *
- * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
- *
- * SMTP CODE SUCCESS: 250
- * SMTP CODE SUCCESS: 552,451,452
- * SMTP CODE SUCCESS: 500,501,421
- * @access public
- * @return bool
- */
- public function Mail($from) {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Mail() without being connected");
- return false;
- }
-
- $useVerp = ($this->do_verp ? "XVERP" : "");
- fputs($this->smtp_conn,"MAIL FROM:<" . $from . ">" . $useVerp . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250) {
- $this->error =
- array("error" => "MAIL not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
- return true;
- }
-
- /**
- * Sends the quit command to the server and then closes the socket
- * if there is no error or the $close_on_error argument is true.
- *
- * Implements from rfc 821: QUIT <CRLF>
- *
- * SMTP CODE SUCCESS: 221
- * SMTP CODE ERROR : 500
- * @access public
- * @return bool
- */
- public function Quit($close_on_error = true) {
- $this->error = null; // so there is no confusion
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Quit() without being connected");
- return false;
- }
-
- // send the quit command to the server
- fputs($this->smtp_conn,"quit" . $this->CRLF);
-
- // get any good-bye messages
- $byemsg = $this->get_lines();
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $byemsg . $this->CRLF . '<br />';
- }
-
- $rval = true;
- $e = null;
-
- $code = substr($byemsg,0,3);
- if($code != 221) {
- // use e as a tmp var cause Close will overwrite $this->error
- $e = array("error" => "SMTP server rejected quit command",
- "smtp_code" => $code,
- "smtp_rply" => substr($byemsg,4));
- $rval = false;
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $e["error"] . ": " . $byemsg . $this->CRLF . '<br />';
- }
- }
-
- if(empty($e) || $close_on_error) {
- $this->Close();
- }
-
- return $rval;
- }
-
- /**
- * Sends the command RCPT to the SMTP server with the TO: argument of $to.
- * Returns true if the recipient was accepted false if it was rejected.
- *
- * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
- *
- * SMTP CODE SUCCESS: 250,251
- * SMTP CODE FAILURE: 550,551,552,553,450,451,452
- * SMTP CODE ERROR : 500,501,503,421
- * @access public
- * @return bool
- */
- public function Recipient($to) {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Recipient() without being connected");
- return false;
- }
-
- fputs($this->smtp_conn,"RCPT TO:<" . $to . ">" . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250 && $code != 251) {
- $this->error =
- array("error" => "RCPT not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
- return true;
- }
-
- /**
- * Sends the RSET command to abort and transaction that is
- * currently in progress. Returns true if successful false
- * otherwise.
- *
- * Implements rfc 821: RSET <CRLF>
- *
- * SMTP CODE SUCCESS: 250
- * SMTP CODE ERROR : 500,501,504,421
- * @access public
- * @return bool
- */
- public function Reset() {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called Reset() without being connected");
- return false;
- }
-
- fputs($this->smtp_conn,"RSET" . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250) {
- $this->error =
- array("error" => "RSET failed",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
-
- return true;
- }
-
- /**
- * Starts a mail transaction from the email address specified in
- * $from. Returns true if successful or false otherwise. If True
- * the mail transaction is started and then one or more Recipient
- * commands may be called followed by a Data command. This command
- * will send the message to the users terminal if they are logged
- * in and send them an email.
- *
- * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
- *
- * SMTP CODE SUCCESS: 250
- * SMTP CODE SUCCESS: 552,451,452
- * SMTP CODE SUCCESS: 500,501,502,421
- * @access public
- * @return bool
- */
- public function SendAndMail($from) {
- $this->error = null; // so no confusion is caused
-
- if(!$this->connected()) {
- $this->error = array(
- "error" => "Called SendAndMail() without being connected");
- return false;
- }
-
- fputs($this->smtp_conn,"SAML FROM:" . $from . $this->CRLF);
-
- $rply = $this->get_lines();
- $code = substr($rply,0,3);
-
- if($this->do_debug >= 2) {
- echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
- }
-
- if($code != 250) {
- $this->error =
- array("error" => "SAML not accepted from server",
- "smtp_code" => $code,
- "smtp_msg" => substr($rply,4));
- if($this->do_debug >= 1) {
- echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
- }
- return false;
- }
- return true;
- }
-
- /**
- * 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 implimented in the future
- *
- * Implements from rfc 821: TURN <CRLF>
- *
- * SMTP CODE SUCCESS: 250
- * SMTP CODE FAILURE: 502
- * SMTP CODE ERROR : 500, 503
- * @access public
- * @return bool
- */
- public function Turn() {
- $this->error = array("error" => "This method, TURN, of the SMTP ".
- "is not implemented");
- if($this->do_debug >= 1) {
- echo "SMTP -> NOTICE: " . $this->error["error"] . $this->CRLF . '<br />';
- }
- return false;
- }
-
- /**
- * Get the current error
- * @access public
- * @return array
- */
- public function getError() {
- return $this->error;
- }
-
- /////////////////////////////////////////////////
- // INTERNAL FUNCTIONS
- /////////////////////////////////////////////////
-
- /**
- * Read in as many lines as possible
- * 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 private
- * @return string
- */
- private function get_lines() {
- $data = "";
- while(!feof($this->smtp_conn)) {
- $str = @fgets($this->smtp_conn,515);
- if($this->do_debug >= 4) {
- echo "SMTP -> get_lines(): \$data was \"$data\"" . $this->CRLF . '<br />';
- echo "SMTP -> get_lines(): \$str is \"$str\"" . $this->CRLF . '<br />';
- }
- $data .= $str;
- if($this->do_debug >= 4) {
- echo "SMTP -> get_lines(): \$data is \"$data\"" . $this->CRLF . '<br />';
- }
- // if 4th character is a space, we are done reading, break the loop
- if(substr($str,3,1) == " ") { break; }
- }
- return $data;
- }
+ }
-}
+ /**
+ * 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;
+ }
+}
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