mirror of
https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
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
|
|
* 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;
|
|
}
|
|
}
|