diff options
Diffstat (limited to 'lib/phpmailer/class.smtp.php')
| -rw-r--r-- | lib/phpmailer/class.smtp.php | 2202 |
1 files changed, 1224 insertions, 978 deletions
diff --git a/lib/phpmailer/class.smtp.php b/lib/phpmailer/class.smtp.php index 72361bbbb..04ced6581 100644 --- a/lib/phpmailer/class.smtp.php +++ b/lib/phpmailer/class.smtp.php @@ -1,1003 +1,1249 @@ <?php -/*~ class.smtp.php -.---------------------------------------------------------------------------. -| Software: PHPMailer - PHP email class | -| Version: 5.2.4 | -| Site: https://code.google.com/a/apache-extras.org/p/phpmailer/ | -| ------------------------------------------------------------------------- | -| Admin: Jim Jagielski (project admininistrator) | -| Authors: Andy Prevost (codeworxtech) [email protected] | -| : Marcus Bointon (coolbru) [email protected] | -| : Jim Jagielski (jimjag) [email protected] | -| 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) <[email protected]> + * @author Jim Jagielski (jimjag) <[email protected]> + * @author Andy Prevost (codeworxtech) <[email protected]> + * @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) + * @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. */ /** - * PHP RFC821 SMTP client - * - * 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. - * @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 <[email protected]> */ +class SMTP +{ + /** + * The PHPMailer SMTP version number. + * @var string + */ + const VERSION = '5.2.19'; -class SMTP { - /** - * SMTP server port - * @var int - */ - public $SMTP_PORT = 25; - - /** - * SMTP reply line ending (don't change) - * @var string - */ - public $CRLF = "\r\n"; - - /** - * Sets whether debugging is turned on - * @var bool - */ - public $do_debug; // the level of debug to perform - - /** - * Sets the function/method to use for debugging output. - * Right now we only honor "echo" or "error_log" - * @var string - */ - public $Debugoutput = "echo"; - - /** - * Sets VERP use on/off (default is off) - * @var bool - */ - public $do_verp = false; - - /** - * Sets the SMTP timeout value for reads, in seconds - * @var int - */ - public $Timeout = 15; - - /** - * Sets the SMTP timelimit value for reads, in seconds - * @var int - */ - public $Timelimit = 30; - - /** - * Sets the SMTP PHPMailer Version number - * @var string - */ - public $Version = '5.2.4'; - - ///////////////////////////////////////////////// - // PROPERTIES, PRIVATE AND PROTECTED - ///////////////////////////////////////////////// - - /** - * @var resource The socket to the server - */ - private $smtp_conn; - /** - * @var string Error message, if any, for the last call - */ - private $error; - /** - * @var string The reply the server sent to us for HELO - */ - private $helo_rply; - - /** - * Outputs debugging info via user-defined method - * @param string $str - */ - private function edebug($str) { - if ($this->Debugoutput == "error_log") { - error_log($str); - } else { - echo $str; - } - } - - /** - * Initialize the class so that the data is in a known state. - * @access public - * @return SMTP - */ - 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 - * @param string $host - * @param int $port - * @param int $tval - * @return bool - */ - public function Connect($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) { - $this->edebug("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") { - $max = ini_get('max_execution_time'); - if ($max != 0 && $tval > $max) { // don't bother if unlimited - @set_time_limit($tval); - } - stream_set_timeout($this->smtp_conn, $tval, 0); - } - - // get any announcement - $announce = $this->get_lines(); - - if($this->do_debug >= 2) { - $this->edebug("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) { - $this->edebug("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) { - $this->edebug("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 - * @param string $username - * @param string $password - * @param string $authtype - * @param string $realm - * @param string $workstation - * @return bool - */ - public function Authenticate($username, $password, $authtype='LOGIN', $realm='', $workstation='') { - if (empty($authtype)) { - $authtype = 'LOGIN'; - } - - switch ($authtype) { - case 'PLAIN': - // Start authentication - fputs($this->smtp_conn,"AUTH PLAIN" . $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) { - $this->edebug("SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />'); - } - return false; - } - // Send encoded username and password - fputs($this->smtp_conn, base64_encode("\0".$username."\0".$password) . $this->CRLF); - - $rply = $this->get_lines(); - $code = substr($rply,0,3); - - if($code != 235) { - $this->error = - array("error" => "Authentication not accepted from server", - "smtp_code" => $code, - "smtp_msg" => substr($rply,4)); - if($this->do_debug >= 1) { - $this->edebug("SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />'); - } - return false; - } - break; - case 'LOGIN': - // Start authentication - fputs($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) { - $this->edebug("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) { - $this->edebug("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) { - $this->edebug("SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />'); - } - 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 Documentation http://curl.haxx.se/rfc/ntlm.html#ntlmSmtpAuthentication - */ - require_once('ntlm_sasl_client.php'); - $temp = new stdClass(); - $ntlm_client = new ntlm_sasl_client_class; - if(! $ntlm_client->Initialize($temp)){//let's test if every function its available - $this->error = array("error" => $temp->error); - if($this->do_debug >= 1) { - $this->edebug("You need to enable some modules in your php.ini file: " . $this->error["error"] . $this->CRLF); - } + /** + * 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 = '5.2.19'; + + /** + * 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; } - $msg1 = $ntlm_client->TypeMsg1($realm, $workstation);//msg1 - - fputs($this->smtp_conn,"AUTH NTLM " . base64_encode($msg1) . $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) { - $this->edebug("SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF); - } + if (empty($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; } - - $challange = substr($rply,3);//though 0 based, there is a white space after the 3 digit number....//msg2 - $challange = base64_decode($challange); - $ntlm_res = $ntlm_client->NTLMResponse(substr($challange,24,8),$password); - $msg3 = $ntlm_client->TypeMsg3($ntlm_res,$username,$realm,$workstation);//msg3 - // Send encoded username - fputs($this->smtp_conn, base64_encode($msg3) . $this->CRLF); - - $rply = $this->get_lines(); - $code = substr($rply,0,3); - - if($code != 235) { - $this->error = - array("error" => "Could not authenticate", - "smtp_code" => $code, - "smtp_msg" => substr($rply,4)); - if($this->do_debug >= 1) { - $this->edebug("SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF); + $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; } - break; - } - 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) { - $this->edebug("SMTP -> NOTICE:" . $this->CRLF . "EOF caught while checking if connected"); - } - $this->Close(); + + //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; - } - 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 - * @param string $msg_data - * @return bool - */ - public function Data($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) { - $this->edebug("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) { - $this->edebug("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; + } + + /** + * 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] = $fields; + } } + } - /* if processing headers add a LWSP-char to the front of new line - * rfc 822 on long msg headers - */ - if($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) { - $this->edebug("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) { - $this->edebug("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 - * @param string $host - * @return bool - */ - public function Hello($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)) { + /** + * 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 - * @param string $hello - * @param string $host - * @return bool - */ - private function SendHello($hello, $host) { - fputs($this->smtp_conn, $hello . " " . $host . $this->CRLF); - - $rply = $this->get_lines(); - $code = substr($rply,0,3); - - if($this->do_debug >= 2) { - $this->edebug("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) { - $this->edebug("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 - * @param string $from - * @return bool - */ - public function Mail($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) { - $this->edebug("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) { - $this->edebug("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 - * @param bool $close_on_error - * @return bool - */ - public function Quit($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) { - $this->edebug("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) { - $this->edebug("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 - * @param string $to - * @return bool - */ - public function Recipient($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) { - $this->edebug("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) { - $this->edebug("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) { - $this->edebug("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) { - $this->edebug("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 - * @param string $from - * @return bool - */ - public function SendAndMail($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) { - $this->edebug("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) { - $this->edebug("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) { - $this->edebug("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 = ""; - $endtime = 0; - /* If for some reason the fp is bad, don't inf loop */ - if (!is_resource($this->smtp_conn)) { - return $data; - } - stream_set_timeout($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); - if($this->do_debug >= 4) { - $this->edebug("SMTP -> get_lines(): \$data was \"$data\"" . $this->CRLF . '<br />'); - $this->edebug("SMTP -> get_lines(): \$str is \"$str\"" . $this->CRLF . '<br />'); - } - $data .= $str; - if($this->do_debug >= 4) { - $this->edebug("SMTP -> get_lines(): \$data is \"$data\"" . $this->CRLF . '<br />'); - } - // if 4th character is a space, we are done reading, break the loop - if(substr($str,3,1) == " ") { break; } - // Timed-out? Log and break - $info = stream_get_meta_data($this->smtp_conn); - if ($info['timed_out']) { - if($this->do_debug >= 4) { - $this->edebug("SMTP -> get_lines(): timed-out (" . $this->Timeout . " seconds) <br />"); - } - break; - } - // Now check if reads took too long - if ($endtime) { - if (time() > $endtime) { - if($this->do_debug >= 4) { - $this->edebug("SMTP -> get_lines(): timelimit reached (" . $this->Timelimit . " seconds) <br />"); - } - 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; + } } -?> |