mirror of
https://github.com/renbaoshuo/S2OJ.git
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957 lines
30 KiB
PHP
957 lines
30 KiB
PHP
<?php
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/**
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* PHPMailer RFC821 SMTP email transport class.
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* PHP Version 5
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* @package PHPMailer
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* @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
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* @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
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* @author Jim Jagielski (jimjag) <jimjag@gmail.com>
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* @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
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* @author Brent R. Matzelle (original founder)
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* @copyright 2014 Marcus Bointon
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* @copyright 2010 - 2012 Jim Jagielski
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* @copyright 2004 - 2009 Andy Prevost
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @note This program is distributed in the hope that it will be useful - WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/**
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* PHPMailer RFC821 SMTP email transport class.
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* Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
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* @package PHPMailer
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* @author Chris Ryan <unknown@example.com>
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* @author Marcus Bointon <phpmailer@synchromedia.co.uk>
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*/
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class SMTP
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{
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/**
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* The PHPMailer SMTP version number.
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* @type string
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*/
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const VERSION = '5.2.8';
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/**
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* SMTP line break constant.
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* @type string
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*/
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const CRLF = "\r\n";
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/**
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* The SMTP port to use if one is not specified.
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* @type integer
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*/
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const DEFAULT_SMTP_PORT = 25;
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/**
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* The maximum line length allowed by RFC 2822 section 2.1.1
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* @type integer
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*/
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const MAX_LINE_LENGTH = 998;
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/**
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* The PHPMailer SMTP Version number.
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* @type string
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* @deprecated Use the `VERSION` constant instead
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* @see SMTP::VERSION
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*/
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public $Version = '5.2.8';
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/**
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* SMTP server port number.
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* @type integer
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* @deprecated This is only ever used as a default value, so use the `DEFAULT_SMTP_PORT` constant instead
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* @see SMTP::DEFAULT_SMTP_PORT
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*/
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public $SMTP_PORT = 25;
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/**
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* SMTP reply line ending.
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* @type string
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* @deprecated Use the `CRLF` constant instead
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* @see SMTP::CRLF
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*/
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public $CRLF = "\r\n";
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/**
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* Debug output level.
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* Options:
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* * `0` No output
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* * `1` Commands
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* * `2` Data and commands
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* * `3` As 2 plus connection status
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* * `4` Low-level data output
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* @type integer
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*/
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public $do_debug = 0;
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/**
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* How to handle debug output.
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* Options:
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* * `echo` Output plain-text as-is, appropriate for CLI
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* * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
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* * `error_log` Output to error log as configured in php.ini
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*
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* Alternatively, you can provide a callable expecting two params: a message string and the debug level:
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* <code>
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* $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
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* </code>
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* @type string|callable
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*/
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public $Debugoutput = 'echo';
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/**
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* Whether to use VERP.
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* @link http://en.wikipedia.org/wiki/Variable_envelope_return_path
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* @link http://www.postfix.org/VERP_README.html Info on VERP
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* @type boolean
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*/
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public $do_verp = false;
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/**
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* The timeout value for connection, in seconds.
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* Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
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* This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
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* @link http://tools.ietf.org/html/rfc2821#section-4.5.3.2
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* @type integer
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*/
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public $Timeout = 300;
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/**
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* The SMTP timelimit value for reads, in seconds.
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* @type integer
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*/
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public $Timelimit = 30;
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/**
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* The socket for the server connection.
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* @type resource
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*/
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protected $smtp_conn;
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/**
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* Error message, if any, for the last call.
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* @type array
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*/
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protected $error = array();
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/**
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* The reply the server sent to us for HELO.
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* If null, no HELO string has yet been received.
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* @type string|null
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*/
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protected $helo_rply = null;
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/**
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* The most recent reply received from the server.
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* @type string
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*/
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protected $last_reply = '';
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/**
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* Output debugging info via a user-selected method.
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* @see SMTP::$Debugoutput
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* @see SMTP::$do_debug
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* @param string $str Debug string to output
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* @return void
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*/
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protected function edebug($str)
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{
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if (is_callable($this->Debugoutput)) {
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call_user_func($this->Debugoutput, $str, $this->do_debug);
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return;
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}
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switch ($this->Debugoutput) {
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case 'error_log':
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//Don't output, just log
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error_log($str);
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break;
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case 'html':
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//Cleans up output a bit for a better looking, HTML-safe output
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echo htmlentities(
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preg_replace('/[\r\n]+/', '', $str),
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ENT_QUOTES,
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'UTF-8'
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)
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. "<br>\n";
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break;
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case 'echo':
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default:
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//Normalize line breaks
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$str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str);
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echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(
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"\n",
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"\n \t ",
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trim($str)
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)."\n";
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}
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}
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/**
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* Connect to an SMTP server.
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* @param string $host SMTP server IP or host name
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* @param integer $port The port number to connect to
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* @param integer $timeout How long to wait for the connection to open
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* @param array $options An array of options for stream_context_create()
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* @access public
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* @return boolean
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*/
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public function connect($host, $port = null, $timeout = 30, $options = array())
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{
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static $streamok;
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//This is enabled by default since 5.0.0 but some providers disable it
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//Check this once and cache the result
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if (is_null($streamok)) {
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$streamok = function_exists('stream_socket_client');
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}
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// Clear errors to avoid confusion
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$this->error = array();
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// Make sure we are __not__ connected
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if ($this->connected()) {
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// Already connected, generate error
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$this->error = array('error' => 'Already connected to a server');
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return false;
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}
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if (empty($port)) {
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$port = self::DEFAULT_SMTP_PORT;
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}
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// Connect to the SMTP server
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if ($this->do_debug >= 3) {
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$this->edebug("Connection: opening to $host:$port, t=$timeout, opt=".var_export($options, true));
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}
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$errno = 0;
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$errstr = '';
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if ($streamok) {
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$socket_context = stream_context_create($options);
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//Suppress errors; connection failures are handled at a higher level
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$this->smtp_conn = @stream_socket_client(
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$host . ":" . $port,
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$errno,
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$errstr,
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$timeout,
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STREAM_CLIENT_CONNECT,
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$socket_context
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);
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} else {
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//Fall back to fsockopen which should work in more places, but is missing some features
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if ($this->do_debug >= 3) {
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$this->edebug("Connection: stream_socket_client not available, falling back to fsockopen");
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}
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$this->smtp_conn = fsockopen(
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$host,
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$port,
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$errno,
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$errstr,
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$timeout
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);
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}
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// Verify we connected properly
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if (!is_resource($this->smtp_conn)) {
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$this->error = array(
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'error' => 'Failed to connect to server',
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'errno' => $errno,
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'errstr' => $errstr
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);
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if ($this->do_debug >= 1) {
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$this->edebug(
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'SMTP ERROR: ' . $this->error['error']
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. ": $errstr ($errno)"
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);
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}
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return false;
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}
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if ($this->do_debug >= 3) {
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$this->edebug('Connection: opened');
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}
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// SMTP server can take longer to respond, give longer timeout for first read
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// Windows does not have support for this timeout function
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if (substr(PHP_OS, 0, 3) != 'WIN') {
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$max = ini_get('max_execution_time');
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if ($max != 0 && $timeout > $max) { // Don't bother if unlimited
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@set_time_limit($timeout);
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}
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stream_set_timeout($this->smtp_conn, $timeout, 0);
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}
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// Get any announcement
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$announce = $this->get_lines();
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if ($this->do_debug >= 2) {
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$this->edebug('SERVER -> CLIENT: ' . $announce);
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}
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return true;
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}
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/**
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* Initiate a TLS (encrypted) session.
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* @access public
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* @return boolean
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*/
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public function startTLS()
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{
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if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
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return false;
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}
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// Begin encrypted connection
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if (!stream_socket_enable_crypto(
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$this->smtp_conn,
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true,
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STREAM_CRYPTO_METHOD_TLS_CLIENT
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)) {
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return false;
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}
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return true;
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}
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/**
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* Perform SMTP authentication.
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* Must be run after hello().
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* @see hello()
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* @param string $username The user name
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* @param string $password The password
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* @param string $authtype The auth type (PLAIN, LOGIN, NTLM, CRAM-MD5)
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* @param string $realm The auth realm for NTLM
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* @param string $workstation The auth workstation for NTLM
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* @access public
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* @return boolean True if successfully authenticated.
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*/
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public function authenticate(
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$username,
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$password,
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$authtype = 'LOGIN',
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$realm = '',
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$workstation = ''
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) {
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if (empty($authtype)) {
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$authtype = 'LOGIN';
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}
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switch ($authtype) {
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case 'PLAIN':
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// Start authentication
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if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
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return false;
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}
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// Send encoded username and password
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if (!$this->sendCommand(
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'User & Password',
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base64_encode("\0" . $username . "\0" . $password),
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235
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)
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) {
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return false;
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}
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break;
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case 'LOGIN':
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// Start authentication
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if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
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return false;
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}
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if (!$this->sendCommand("Username", base64_encode($username), 334)) {
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return false;
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}
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if (!$this->sendCommand("Password", base64_encode($password), 235)) {
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return false;
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}
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break;
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case 'NTLM':
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/*
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* ntlm_sasl_client.php
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* Bundled with Permission
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*
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* How to telnet in windows:
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* http://technet.microsoft.com/en-us/library/aa995718%28EXCHG.65%29.aspx
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* PROTOCOL Docs http://curl.haxx.se/rfc/ntlm.html#ntlmSmtpAuthentication
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*/
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require_once 'extras/ntlm_sasl_client.php';
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$temp = new stdClass();
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$ntlm_client = new ntlm_sasl_client_class;
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//Check that functions are available
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if (!$ntlm_client->Initialize($temp)) {
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$this->error = array('error' => $temp->error);
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if ($this->do_debug >= 1) {
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$this->edebug(
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'You need to enable some modules in your php.ini file: '
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. $this->error['error']
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);
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}
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return false;
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}
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//msg1
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$msg1 = $ntlm_client->TypeMsg1($realm, $workstation); //msg1
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if (!$this->sendCommand(
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'AUTH NTLM',
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'AUTH NTLM ' . base64_encode($msg1),
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334
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)
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) {
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return false;
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}
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//Though 0 based, there is a white space after the 3 digit number
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//msg2
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$challenge = substr($this->last_reply, 3);
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$challenge = base64_decode($challenge);
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$ntlm_res = $ntlm_client->NTLMResponse(
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substr($challenge, 24, 8),
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$password
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);
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//msg3
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$msg3 = $ntlm_client->TypeMsg3(
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$ntlm_res,
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$username,
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$realm,
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$workstation
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);
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// send encoded username
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return $this->sendCommand('Username', base64_encode($msg3), 235);
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case 'CRAM-MD5':
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// Start authentication
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if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
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return false;
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}
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// Get the challenge
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$challenge = base64_decode(substr($this->last_reply, 4));
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// Build the response
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$response = $username . ' ' . $this->hmac($challenge, $password);
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// send encoded credentials
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return $this->sendCommand('Username', base64_encode($response), 235);
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}
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return true;
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}
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/**
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* Calculate an MD5 HMAC hash.
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* Works like hash_hmac('md5', $data, $key)
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* in case that function is not available
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* @param string $data The data to hash
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* @param string $key The key to hash with
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* @access protected
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* @return string
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*/
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protected function hmac($data, $key)
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{
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if (function_exists('hash_hmac')) {
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return hash_hmac('md5', $data, $key);
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}
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// The following borrowed from
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// http://php.net/manual/en/function.mhash.php#27225
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// RFC 2104 HMAC implementation for php.
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// Creates an md5 HMAC.
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// Eliminates the need to install mhash to compute a HMAC
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// Hacked by Lance Rushing
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$bytelen = 64; // byte length for md5
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if (strlen($key) > $bytelen) {
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$key = pack('H*', md5($key));
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}
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$key = str_pad($key, $bytelen, chr(0x00));
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$ipad = str_pad('', $bytelen, chr(0x36));
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$opad = str_pad('', $bytelen, chr(0x5c));
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$k_ipad = $key ^ $ipad;
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$k_opad = $key ^ $opad;
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return md5($k_opad . pack('H*', md5($k_ipad . $data)));
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}
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/**
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* Check connection state.
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* @access public
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* @return boolean True if connected.
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*/
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public function connected()
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{
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if (is_resource($this->smtp_conn)) {
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$sock_status = stream_get_meta_data($this->smtp_conn);
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if ($sock_status['eof']) {
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// the socket is valid but we are not connected
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if ($this->do_debug >= 1) {
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$this->edebug(
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'SMTP NOTICE: EOF caught while checking if connected'
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);
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}
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$this->close();
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return false;
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}
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return true; // everything looks good
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}
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return false;
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}
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/**
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* Close the socket and clean up the state of the class.
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* Don't use this function without first trying to use QUIT.
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* @see quit()
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* @access public
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* @return void
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*/
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public function close()
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{
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$this->error = array();
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$this->helo_rply = null;
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if (is_resource($this->smtp_conn)) {
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// close the connection and cleanup
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fclose($this->smtp_conn);
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if ($this->do_debug >= 3) {
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$this->edebug('Connection: closed');
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}
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}
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}
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/**
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* Send an SMTP DATA command.
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* Issues a data command and sends the msg_data to the server,
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* finializing the mail transaction. $msg_data is the message
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* that is to be send with the headers. Each header needs to be
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* on a single line followed by a <CRLF> with the message headers
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* and the message body being separated by and additional <CRLF>.
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* Implements rfc 821: DATA <CRLF>
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* @param string $msg_data Message data to send
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* @access public
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* @return boolean
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*/
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public function data($msg_data)
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{
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if (!$this->sendCommand('DATA', 'DATA', 354)) {
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return false;
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}
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/* The server is ready to accept data!
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* According to rfc821 we should not send more than 1000 characters on a single line (including the CRLF)
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* so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
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* smaller lines to fit within the limit.
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* We will also look for lines that start with a '.' and prepend an additional '.'.
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* NOTE: this does not count towards line-length limit.
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*/
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// Normalize line breaks before exploding
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$lines = explode("\n", str_replace(array("\r\n", "\r"), "\n", $msg_data));
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/* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
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* of the first line (':' separated) does not contain a space then it _should_ be a header and we will
|
|
* process all lines before a blank line as headers.
|
|
*/
|
|
|
|
$field = substr($lines[0], 0, strpos($lines[0], ':'));
|
|
$in_headers = false;
|
|
if (!empty($field) && strpos($field, ' ') === false) {
|
|
$in_headers = true;
|
|
}
|
|
|
|
foreach ($lines as $line) {
|
|
$lines_out = array();
|
|
if ($in_headers and $line == '') {
|
|
$in_headers = false;
|
|
}
|
|
// ok we need to break this line up into several smaller lines
|
|
//This is a small micro-optimisation: isset($str[$len]) is equivalent to (strlen($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), ' ');
|
|
if (!$pos) { //Deliberately matches both false and 0
|
|
//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
|
|
return $this->sendCommand('DATA END', '.', 250);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
return $noerror;
|
|
}
|
|
|
|
/**
|
|
* 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 $toaddr The address the message is being sent to
|
|
* @access public
|
|
* @return boolean
|
|
*/
|
|
public function recipient($toaddr)
|
|
{
|
|
return $this->sendCommand(
|
|
'RCPT TO',
|
|
'RCPT TO:<' . $toaddr . '>',
|
|
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->error = array(
|
|
'error' => "Called $command without being connected"
|
|
);
|
|
return false;
|
|
}
|
|
$this->client_send($commandstring . self::CRLF);
|
|
|
|
$this->last_reply = $this->get_lines();
|
|
$code = substr($this->last_reply, 0, 3);
|
|
|
|
if ($this->do_debug >= 2) {
|
|
$this->edebug('SERVER -> CLIENT: ' . $this->last_reply);
|
|
}
|
|
|
|
if (!in_array($code, (array)$expect)) {
|
|
$this->error = array(
|
|
'error' => "$command command failed",
|
|
'smtp_code' => $code,
|
|
'detail' => substr($this->last_reply, 4)
|
|
);
|
|
if ($this->do_debug >= 1) {
|
|
$this->edebug(
|
|
'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply
|
|
);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
$this->error = array();
|
|
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()
|
|
{
|
|
$this->error = array(
|
|
'error' => 'The SMTP TURN command is not implemented'
|
|
);
|
|
if ($this->do_debug >= 1) {
|
|
$this->edebug('SMTP NOTICE: ' . $this->error['error']);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Send raw data to the server.
|
|
* @param string $data The data to send
|
|
* @access public
|
|
* @return integer|boolean The number of bytes sent to the server or false on error
|
|
*/
|
|
public function client_send($data)
|
|
{
|
|
if ($this->do_debug >= 1) {
|
|
$this->edebug("CLIENT -> SERVER: $data");
|
|
}
|
|
return fwrite($this->smtp_conn, $data);
|
|
}
|
|
|
|
/**
|
|
* Get the latest error.
|
|
* @access public
|
|
* @return array
|
|
*/
|
|
public function getError()
|
|
{
|
|
return $this->error;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
if ($this->do_debug >= 4) {
|
|
$this->edebug("SMTP -> get_lines(): \$data was \"$data\"");
|
|
$this->edebug("SMTP -> get_lines(): \$str is \"$str\"");
|
|
}
|
|
$data .= $str;
|
|
if ($this->do_debug >= 4) {
|
|
$this->edebug("SMTP -> get_lines(): \$data is \"$data\"");
|
|
}
|
|
// 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 ($info['timed_out']) {
|
|
if ($this->do_debug >= 4) {
|
|
$this->edebug(
|
|
'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)'
|
|
);
|
|
}
|
|
break;
|
|
}
|
|
// Now check if reads took too long
|
|
if ($endtime and time() > $endtime) {
|
|
if ($this->do_debug >= 4) {
|
|
$this->edebug(
|
|
'SMTP -> get_lines(): timelimit reached ('.
|
|
$this->Timelimit . ' sec)'
|
|
);
|
|
}
|
|
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 debug output method.
|
|
* @param string $method The function/method to use for debugging output.
|
|
*/
|
|
public function setDebugOutput($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;
|
|
}
|
|
}
|