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<?php |
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/* |
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+-----------------------------------------------------------------------+ |
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| program/include/rcube_smtp.php | |
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| This file is part of the Roundcube Webmail client | |
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| Copyright (C) 2005-2010, Roundcube Dev. - Switzerland | |
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| Licensed under the GNU GPL | |
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| | |
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| PURPOSE: | |
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| Provide SMTP functionality using socket connections | |
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+-----------------------------------------------------------------------+ |
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| Author: Thomas Bruederli <roundcube@gmail.com> | |
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+-----------------------------------------------------------------------+ |
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$Id$ |
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*/ |
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// define headers delimiter |
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define('SMTP_MIME_CRLF', "\r\n"); |
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/** |
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* Class to provide SMTP functionality using PEAR Net_SMTP |
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* |
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* @package Mail |
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* @author Thomas Bruederli <roundcube@gmail.com> |
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* @author Aleksander Machniak <alec@alec.pl> |
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*/ |
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class rcube_smtp |
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{ |
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private $conn = null; |
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private $response; |
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private $error; |
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/** |
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* SMTP Connection and authentication |
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* |
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* @param string Server host |
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* @param string Server port |
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* @param string User name |
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* @param string Password |
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* |
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* @return bool Returns true on success, or false on error |
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*/ |
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public function connect($host=null, $port=null, $user=null, $pass=null) |
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{ |
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$RCMAIL = rcmail::get_instance(); |
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// disconnect/destroy $this->conn |
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$this->disconnect(); |
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// reset error/response var |
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$this->error = $this->response = null; |
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// let plugins alter smtp connection config |
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$CONFIG = $RCMAIL->plugins->exec_hook('smtp_connect', array( |
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'smtp_server' => $host ? $host : $RCMAIL->config->get('smtp_server'), |
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'smtp_port' => $port ? $port : $RCMAIL->config->get('smtp_port', 25), |
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'smtp_user' => $user ? $user : $RCMAIL->config->get('smtp_user'), |
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'smtp_pass' => $pass ? $pass : $RCMAIL->config->get('smtp_pass'), |
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'smtp_auth_type' => $RCMAIL->config->get('smtp_auth_type'), |
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'smtp_helo_host' => $RCMAIL->config->get('smtp_helo_host'), |
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'smtp_timeout' => $RCMAIL->config->get('smtp_timeout'), |
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)); |
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$smtp_host = rcube_parse_host($CONFIG['smtp_server']); |
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// when called from Installer it's possible to have empty $smtp_host here |
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if (!$smtp_host) $smtp_host = 'localhost'; |
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$smtp_port = is_numeric($CONFIG['smtp_port']) ? $CONFIG['smtp_port'] : 25; |
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$smtp_host_url = parse_url($smtp_host); |
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// overwrite port |
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if (isset($smtp_host_url['host']) && isset($smtp_host_url['port'])) |
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{ |
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$smtp_host = $smtp_host_url['host']; |
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$smtp_port = $smtp_host_url['port']; |
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} |
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// re-write smtp host |
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if (isset($smtp_host_url['host']) && isset($smtp_host_url['scheme'])) |
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$smtp_host = sprintf('%s://%s', $smtp_host_url['scheme'], $smtp_host_url['host']); |
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// remove TLS prefix and set flag for use in Net_SMTP::auth() |
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if (preg_match('#^tls://#i', $smtp_host)) { |
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$smtp_host = preg_replace('#^tls://#i', '', $smtp_host); |
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$use_tls = true; |
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} |
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if (!empty($CONFIG['smtp_helo_host'])) |
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$helo_host = $CONFIG['smtp_helo_host']; |
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else if (!empty($_SERVER['SERVER_NAME'])) |
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$helo_host = preg_replace('/:\d+$/', '', $_SERVER['SERVER_NAME']); |
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else |
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$helo_host = 'localhost'; |
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$this->conn = new Net_SMTP($smtp_host, $smtp_port, $helo_host); |
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if($RCMAIL->config->get('smtp_debug')) |
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$this->conn->setDebug(true, array($this, 'debug_handler')); |
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// try to connect to server and exit on failure |
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$result = $this->conn->connect($smtp_timeout); |
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if (PEAR::isError($result)) |
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{ |
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$this->response[] = "Connection failed: ".$result->getMessage(); |
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$this->error = array('label' => 'smtpconnerror', 'vars' => array('code' => $this->conn->_code)); |
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$this->conn = null; |
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return false; |
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} |
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$smtp_user = str_replace('%u', $_SESSION['username'], $CONFIG['smtp_user']); |
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$smtp_pass = str_replace('%p', $RCMAIL->decrypt($_SESSION['password']), $CONFIG['smtp_pass']); |
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$smtp_auth_type = empty($CONFIG['smtp_auth_type']) ? NULL : $CONFIG['smtp_auth_type']; |
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// attempt to authenticate to the SMTP server |
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if ($smtp_user && $smtp_pass) |
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{ |
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$result = $this->conn->auth($smtp_user, $smtp_pass, $smtp_auth_type, $use_tls); |
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if (PEAR::isError($result)) |
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{ |
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$this->error = array('label' => 'smtpautherror', 'vars' => array('code' => $this->conn->_code)); |
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$this->response[] .= 'Authentication failure: ' . $result->getMessage() . ' (Code: ' . $result->getCode() . ')'; |
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$this->reset(); |
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$this->disconnect(); |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Function for sending mail |
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* |
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* @param string Sender e-Mail address |
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* |
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* @param mixed Either a comma-seperated list of recipients |
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* (RFC822 compliant), or an array of recipients, |
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* each RFC822 valid. This may contain recipients not |
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* specified in the headers, for Bcc:, resending |
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* messages, etc. |
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* |
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* @param mixed The message headers to send with the mail |
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* Either as an associative array or a finally |
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* formatted string |
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* |
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* @param mixed The full text of the message body, including any Mime parts |
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* or file handle |
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* |
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* @return bool Returns true on success, or false on error |
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*/ |
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public function send_mail($from, $recipients, &$headers, &$body) |
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{ |
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if (!is_object($this->conn)) |
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return false; |
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// prepare message headers as string |
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if (is_array($headers)) |
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{ |
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if (!($headerElements = $this->_prepare_headers($headers))) { |
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$this->reset(); |
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return false; |
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} |
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list($from, $text_headers) = $headerElements; |
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} |
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else if (is_string($headers)) |
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$text_headers = $headers; |
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else |
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{ |
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$this->reset(); |
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$this->response[] .= "Invalid message headers"; |
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return false; |
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} |
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// exit if no from address is given |
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if (!isset($from)) |
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{ |
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$this->reset(); |
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$this->response[] .= "No From address has been provided"; |
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return false; |
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} |
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// set From: address |
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if (PEAR::isError($this->conn->mailFrom($from))) |
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{ |
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$err = $this->conn->getResponse(); |
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$this->error = array('label' => 'smtpfromerror', 'vars' => array( |
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'from' => $from, 'code' => $this->conn->_code, 'msg' => $err[1])); |
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$this->response[] .= "Failed to set sender '$from'"; |
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$this->reset(); |
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return false; |
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} |
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// prepare list of recipients |
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$recipients = $this->_parse_rfc822($recipients); |
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if (PEAR::isError($recipients)) |
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{ |
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$this->error = array('label' => 'smtprecipientserror'); |
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$this->reset(); |
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return false; |
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} |
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// set mail recipients |
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foreach ($recipients as $recipient) |
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{ |
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if (PEAR::isError($this->conn->rcptTo($recipient))) { |
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$err = $this->conn->getResponse(); |
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$this->error = array('label' => 'smtptoerror', 'vars' => array( |
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'to' => $recipient, 'code' => $this->conn->_code, 'msg' => $err[1])); |
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$this->response[] .= "Failed to add recipient '$recipient'"; |
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$this->reset(); |
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return false; |
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} |
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} |
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if (is_resource($body)) |
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{ |
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// file handle |
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$data = $body; |
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$text_headers = preg_replace('/[\r\n]+$/', '', $text_headers); |
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} else { |
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// Concatenate headers and body so it can be passed by reference to SMTP_CONN->data |
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// so preg_replace in SMTP_CONN->quotedata will store a reference instead of a copy. |
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// We are still forced to make another copy here for a couple ticks so we don't really |
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// get to save a copy in the method call. |
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$data = $text_headers . "\r\n" . $body; |
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// unset old vars to save data and so we can pass into SMTP_CONN->data by reference. |
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unset($text_headers, $body); |
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} |
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// Send the message's headers and the body as SMTP data. |
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if (PEAR::isError($result = $this->conn->data($data, $text_headers))) |
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{ |
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$err = $this->conn->getResponse(); |
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if (!in_array($err[0], array(354, 250, 221))) |
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$msg = sprintf('[%d] %s', $err[0], $err[1]); |
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else |
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$msg = $result->getMessage(); |
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$this->error = array('label' => 'smtperror', 'vars' => array('msg' => $msg)); |
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$this->response[] .= "Failed to send data"; |
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$this->reset(); |
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return false; |
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} |
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$this->response[] = join(': ', $this->conn->getResponse()); |
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return true; |
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} |
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/** |
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* Reset the global SMTP connection |
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* @access public |
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*/ |
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public function reset() |
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{ |
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if (is_object($this->conn)) |
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$this->conn->rset(); |
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} |
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/** |
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* Disconnect the global SMTP connection |
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* @access public |
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*/ |
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public function disconnect() |
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{ |
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if (is_object($this->conn)) { |
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$this->conn->disconnect(); |
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$this->conn = null; |
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} |
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} |
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/** |
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* This is our own debug handler for the SMTP connection |
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* @access public |
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*/ |
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public function debug_handler(&$smtp, $message) |
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{ |
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write_log('smtp', preg_replace('/\r\n$/', '', $message)); |
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} |
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/** |
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* Get error message |
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* @access public |
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*/ |
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public function get_error() |
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{ |
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return $this->error; |
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} |
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/** |
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* Get server response messages array |
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* @access public |
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*/ |
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public function get_response() |
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{ |
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return $this->response; |
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} |
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/** |
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* Take an array of mail headers and return a string containing |
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* text usable in sending a message. |
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* |
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* @param array $headers The array of headers to prepare, in an associative |
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* array, where the array key is the header name (ie, |
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* 'Subject'), and the array value is the header |
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* value (ie, 'test'). The header produced from those |
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* values would be 'Subject: test'. |
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* |
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* @return mixed Returns false if it encounters a bad address, |
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* otherwise returns an array containing two |
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* elements: Any From: address found in the headers, |
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* and the plain text version of the headers. |
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* @access private |
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*/ |
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private function _prepare_headers($headers) |
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{ |
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$lines = array(); |
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$from = null; |
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foreach ($headers as $key => $value) |
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{ |
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if (strcasecmp($key, 'From') === 0) |
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{ |
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$addresses = $this->_parse_rfc822($value); |
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if (is_array($addresses)) |
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$from = $addresses[0]; |
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// Reject envelope From: addresses with spaces. |
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if (strstr($from, ' ')) |
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return false; |
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$lines[] = $key . ': ' . $value; |
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} |
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else if (strcasecmp($key, 'Received') === 0) |
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{ |
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$received = array(); |
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if (is_array($value)) |
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{ |
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foreach ($value as $line) |
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$received[] = $key . ': ' . $line; |
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} |
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else |
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{ |
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$received[] = $key . ': ' . $value; |
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} |
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// Put Received: headers at the top. Spam detectors often |
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// flag messages with Received: headers after the Subject: |
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// as spam. |
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$lines = array_merge($received, $lines); |
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} |
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else |
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{ |
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// If $value is an array (i.e., a list of addresses), convert |
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// it to a comma-delimited string of its elements (addresses). |
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if (is_array($value)) |
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$value = implode(', ', $value); |
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$lines[] = $key . ': ' . $value; |
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} |
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} |
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return array($from, join(SMTP_MIME_CRLF, $lines) . SMTP_MIME_CRLF); |
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} |
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/** |
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* Take a set of recipients and parse them, returning an array of |
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* bare addresses (forward paths) that can be passed to sendmail |
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* or an smtp server with the rcpt to: command. |
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* |
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* @param mixed Either a comma-seperated list of recipients |
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* (RFC822 compliant), or an array of recipients, |
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* each RFC822 valid. |
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* |
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* @return array An array of forward paths (bare addresses). |
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* @access private |
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*/ |
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private function _parse_rfc822($recipients) |
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{ |
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// if we're passed an array, assume addresses are valid and implode them before parsing. |
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if (is_array($recipients)) |
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$recipients = implode(', ', $recipients); |
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$addresses = array(); |
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$recipients = rcube_explode_quoted_string(',', $recipients); |
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reset($recipients); |
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while (list($k, $recipient) = each($recipients)) |
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{ |
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$a = explode(" ", $recipient); |
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while (list($k2, $word) = each($a)) |
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{ |
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if (strpos($word, "@") > 0 && $word[strlen($word)-1] != '"') |
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{ |
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$word = preg_replace('/^<|>$/', '', trim($word)); |
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if (in_array($word, $addresses)===false) |
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array_push($addresses, $word); |
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} |
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} |
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} |
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return $addresses; |
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} |
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} |