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374 lines
10 KiB
PHP
374 lines
10 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| program/include/rcube_smtp.inc |
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| This file is part of the RoundCube Webmail client |
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| Copyright (C) 2005-2007, RoundCube Dev. - Switzerland |
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| Licensed under the GNU GPL |
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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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/**
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* SMTP delivery functions
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*
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* @package Mail
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*/
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// include required PEAR classes
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require_once('Net/SMTP.php');
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// define headers delimiter
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define('SMTP_MIME_CRLF', "\r\n");
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$SMTP_CONN = null;
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/**
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* Function for sending mail using SMTP.
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*
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* @param string Sender e-Mail address
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*
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* @param mixed Either a comma-seperated list of recipients
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* (RFC822 compliant), or an array of recipients,
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* each RFC822 valid. This may contain recipients not
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* specified in the headers, for Bcc:, resending
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* messages, etc.
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*
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* @param mixed The message headers to send with the mail
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* Either as an associative array or a finally
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* formatted string
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*
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* @param string The full text of the message body, including any Mime parts, etc.
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*
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* @return bool Returns TRUE on success, or FALSE on error
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*/
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function smtp_mail($from, $recipients, &$headers, &$body, &$response)
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{
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global $SMTP_CONN, $CONFIG, $RCMAIL;
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$smtp_timeout = null;
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$smtp_host = $CONFIG['smtp_server'];
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$smtp_port = is_numeric($CONFIG['smtp_port']) ? $CONFIG['smtp_port'] : 25;
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$smtp_host_url = parse_url($CONFIG['smtp_server']);
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// overwrite port
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if (isset($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'], $smtp_host_url['host']);
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// create Net_SMTP object and connect to server
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if (!is_object($SMTP_CONN))
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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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$SMTP_CONN = new Net_SMTP($smtp_host, $smtp_port, $helo_host);
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// set debugging
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if ($CONFIG['debug_level'] & 8)
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$SMTP_CONN->setDebug(TRUE);
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// try to connect to server and exit on failure
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$result = $SMTP_CONN->connect($smtp_timeout);
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if (PEAR::isError($result))
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{
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$SMTP_CONN = null;
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$response[] = "Connection failed: ".$result->getMessage();
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return FALSE;
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}
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// attempt to authenticate to the SMTP server
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if ($CONFIG['smtp_user'] && $CONFIG['smtp_pass'])
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{
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if (strstr($CONFIG['smtp_user'], '%u'))
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$smtp_user = str_replace('%u', $_SESSION['username'], $CONFIG['smtp_user']);
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else
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$smtp_user = $CONFIG['smtp_user'];
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if (strstr($CONFIG['smtp_pass'], '%p'))
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$smtp_pass = str_replace('%p', $RCMAIL->decrypt_passwd($_SESSION['password']), $CONFIG['smtp_pass']);
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else
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$smtp_pass = $CONFIG['smtp_pass'];
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$smtp_auth_type = empty($CONFIG['smtp_auth_type']) ? NULL : $CONFIG['smtp_auth_type'];
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$result = $SMTP_CONN->auth($smtp_user, $smtp_pass, $smtp_auth_type);
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if (PEAR::isError($result))
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{
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smtp_reset();
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$response[] .= 'Authentication failure: ' . $result->getMessage() . ' (Code: ' . $result->getCode() . ')';
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return FALSE;
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}
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}
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}
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// prepare message headers as string
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if (is_array($headers))
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{
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$headerElements = smtp_prepare_headers($headers);
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if (!$headerElements)
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{
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smtp_reset();
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return FALSE;
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}
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list($from, $text_headers) = $headerElements;
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}
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else if (is_string($headers))
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$text_headers = $headers;
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else
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{
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smtp_reset();
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$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($from))
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{
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smtp_reset();
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$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($SMTP_CONN->mailFrom($from)))
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{
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smtp_reset();
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$response[] .= "Failed to set sender '$from'";
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return FALSE;
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}
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// prepare list of recipients
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$recipients = smtp_parse_rfc822($recipients);
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if (PEAR::isError($recipients))
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{
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smtp_reset();
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return FALSE;
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}
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// set mail recipients
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foreach ($recipients as $recipient)
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{
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if (PEAR::isError($SMTP_CONN->rcptTo($recipient)))
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{
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smtp_reset();
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$response[] .= "Failed to add recipient '$recipient'";
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return FALSE;
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}
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}
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// Concatenate headers and body so it can be passed by reference to SMTP_CONN->data
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// so preg_replace in SMTP_CONN->quotedata will store a reference instead of a copy.
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// We are still forced to make another copy here for a couple ticks so we don't really
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// get to save a copy in the method call.
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$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, $body);
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// Send the message's headers and the body as SMTP data.
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if (PEAR::isError($SMTP_CONN->data($data)))
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{
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smtp_reset();
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$response[] .= "Failed to send data";
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return FALSE;
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}
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$response[] = join(': ', $SMTP_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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function smtp_reset()
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{
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global $SMTP_CONN;
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if (is_object($SMTP_CONN))
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{
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$SMTP_CONN->rset();
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smtp_disconnect();
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}
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}
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/**
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* Disconnect the global SMTP connection and destroy object
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* @access public
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*/
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function smtp_disconnect()
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{
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global $SMTP_CONN;
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if (is_object($SMTP_CONN))
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{
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$SMTP_CONN->disconnect();
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$SMTP_CONN = null;
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}
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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 $headers The array of headers to prepare, in an associative
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* array, where the array key is the header name (ie,
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* 'Subject'), and the array value is the header
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* value (ie, 'test'). The header produced from those
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* values would be 'Subject: test'.
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*
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* @return mixed Returns false if it encounters a bad address,
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* otherwise returns an array containing two
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* elements: Any From: address found in the headers,
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* and the plain text version of the headers.
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* @access private
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*/
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function smtp_prepare_headers($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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$addresses = smtp_parse_rfc822($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, $lines) . SMTP_MIME_CRLF);
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}
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/**
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* Take a set of recipients and parse them, returning an array of
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* bare addresses (forward paths) that can be passed to sendmail
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* or an smtp server with the rcpt to: command.
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*
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* @param mixed Either a comma-seperated list of recipients
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* (RFC822 compliant), or an array of recipients,
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* each RFC822 valid.
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*
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* @return array An array of forward paths (bare addresses).
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* @access private
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*/
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function smtp_parse_rfc822($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 = smtp_explode_quoted_str(",", $recipients);
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reset($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($word, "@") > 0) && (strpos($word, "\"")===false))
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{
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$word = ereg_replace('^<|>$', '', 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 $addresses;
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}
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/**
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* @access private
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*/
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function smtp_explode_quoted_str($delimiter, $string)
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{
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$quotes=explode("\"", $string);
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while ( list($key, $val) = each($quotes))
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if (($key % 2) == 1)
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$quotes[$key] = str_replace($delimiter, "_!@!_", $quotes[$key]);
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$string=implode("\"", $quotes);
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$result=explode($delimiter, $string);
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while (list($key, $val) = each($result))
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$result[$key] = str_replace("_!@!_", $delimiter, $result[$key]);
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return $result;
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}
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?>
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