You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
536 lines
20 KiB
PHP
536 lines
20 KiB
PHP
<?php
|
|
|
|
/**
|
|
+-----------------------------------------------------------------------+
|
|
| This file is part of the Roundcube Webmail client |
|
|
| |
|
|
| Copyright (C) The Roundcube Dev Team |
|
|
| |
|
|
| Licensed under the GNU General Public License version 3 or |
|
|
| any later version with exceptions for skins & plugins. |
|
|
| See the README file for a full license statement. |
|
|
| |
|
|
| PURPOSE: |
|
|
| Provide SMTP functionality using socket connections |
|
|
+-----------------------------------------------------------------------+
|
|
| Author: Thomas Bruederli <roundcube@gmail.com> |
|
|
| Aleksander Machniak <alec@alec.pl> |
|
|
+-----------------------------------------------------------------------+
|
|
*/
|
|
|
|
/**
|
|
* Class to provide SMTP functionality using PEAR Net_SMTP
|
|
*
|
|
* @package Framework
|
|
* @subpackage Mail
|
|
*/
|
|
class rcube_smtp
|
|
{
|
|
private $conn;
|
|
private $response;
|
|
private $error;
|
|
private $anonymize_log = 0;
|
|
|
|
// define headers delimiter
|
|
const SMTP_MIME_CRLF = "\r\n";
|
|
|
|
const DEBUG_LINE_LENGTH = 4098; // 4KB + 2B for \r\n
|
|
|
|
|
|
/**
|
|
* SMTP Connection and authentication
|
|
*
|
|
* @param string Server host
|
|
* @param string Server port
|
|
* @param string User name
|
|
* @param string Password
|
|
*
|
|
* @return bool Returns true on success, or false on error
|
|
*/
|
|
public function connect($host = null, $port = null, $user = null, $pass = null)
|
|
{
|
|
$rcube = rcube::get_instance();
|
|
|
|
// disconnect/destroy $this->conn
|
|
$this->disconnect();
|
|
|
|
// reset error/response var
|
|
$this->error = $this->response = null;
|
|
|
|
if (!$host) {
|
|
$host = $rcube->config->get('smtp_server');
|
|
if (is_array($host)) {
|
|
if (array_key_exists($_SESSION['storage_host'], $host)) {
|
|
$host = $host[$_SESSION['storage_host']];
|
|
}
|
|
else {
|
|
$this->response[] = "Connection failed: No SMTP server found for IMAP host " . $_SESSION['storage_host'];
|
|
$this->error = array('label' => 'smtpconnerror', 'vars' => array('code' => '500'));
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// let plugins alter smtp connection config
|
|
$CONFIG = $rcube->plugins->exec_hook('smtp_connect', array(
|
|
'smtp_server' => $host,
|
|
'smtp_port' => $port ?: $rcube->config->get('smtp_port', 587),
|
|
'smtp_user' => $user !== null ? $user : $rcube->config->get('smtp_user', '%u'),
|
|
'smtp_pass' => $pass !== null ? $pass : $rcube->config->get('smtp_pass', '%p'),
|
|
'smtp_auth_cid' => $rcube->config->get('smtp_auth_cid'),
|
|
'smtp_auth_pw' => $rcube->config->get('smtp_auth_pw'),
|
|
'smtp_auth_type' => $rcube->config->get('smtp_auth_type'),
|
|
'smtp_helo_host' => $rcube->config->get('smtp_helo_host'),
|
|
'smtp_timeout' => $rcube->config->get('smtp_timeout'),
|
|
'smtp_conn_options' => $rcube->config->get('smtp_conn_options'),
|
|
'smtp_auth_callbacks' => array(),
|
|
));
|
|
|
|
$smtp_host = rcube_utils::parse_host($CONFIG['smtp_server']);
|
|
// when called from Installer it's possible to have empty $smtp_host here
|
|
if (!$smtp_host) $smtp_host = 'localhost';
|
|
$smtp_port = is_numeric($CONFIG['smtp_port']) ? $CONFIG['smtp_port'] : 25;
|
|
$smtp_host_url = parse_url($smtp_host);
|
|
|
|
// overwrite port
|
|
if (isset($smtp_host_url['host']) && isset($smtp_host_url['port'])) {
|
|
$smtp_host = $smtp_host_url['host'];
|
|
$smtp_port = $smtp_host_url['port'];
|
|
}
|
|
|
|
// re-write smtp host
|
|
if (isset($smtp_host_url['host']) && isset($smtp_host_url['scheme'])) {
|
|
$smtp_host = sprintf('%s://%s', $smtp_host_url['scheme'], $smtp_host_url['host']);
|
|
}
|
|
|
|
// remove TLS prefix and set flag for use in Net_SMTP::auth()
|
|
if (preg_match('#^tls://#i', $smtp_host)) {
|
|
$smtp_host = preg_replace('#^tls://#i', '', $smtp_host);
|
|
$use_tls = true;
|
|
}
|
|
|
|
// Handle per-host socket options
|
|
rcube_utils::parse_socket_options($CONFIG['smtp_conn_options'], $smtp_host);
|
|
|
|
// Use valid EHLO/HELO host (#6408)
|
|
$helo_host = $CONFIG['smtp_helo_host'] ?: rcube_utils::server_name();
|
|
$helo_host = rcube_utils::idn_to_ascii($helo_host);
|
|
if (!preg_match('/^[a-zA-Z0-9.:-]+$/', $helo_host)) {
|
|
$helo_host = 'localhost';
|
|
}
|
|
|
|
// IDNA Support
|
|
$smtp_host = rcube_utils::idn_to_ascii($smtp_host);
|
|
|
|
$this->conn = new Net_SMTP($smtp_host, $smtp_port, $helo_host, false, 0, $CONFIG['smtp_conn_options'],
|
|
$CONFIG['gssapi_context'], $CONFIG['gssapi_cn']);
|
|
|
|
if ($rcube->config->get('smtp_debug')) {
|
|
$this->conn->setDebug(true, array($this, 'debug_handler'));
|
|
$this->anonymize_log = 0;
|
|
|
|
$_host = ($use_tls ? 'tls://' : '') . $smtp_host . ':' . $smtp_port;
|
|
$this->debug_handler($this->conn, "Connecting to $_host...");
|
|
}
|
|
|
|
// register authentication methods
|
|
if (!empty($CONFIG['smtp_auth_callbacks']) && method_exists($this->conn, 'setAuthMethod')) {
|
|
foreach ($CONFIG['smtp_auth_callbacks'] as $callback) {
|
|
$this->conn->setAuthMethod($callback['name'], $callback['function'],
|
|
isset($callback['prepend']) ? $callback['prepend'] : true);
|
|
}
|
|
}
|
|
|
|
// try to connect to server and exit on failure
|
|
$result = $this->conn->connect($CONFIG['smtp_timeout']);
|
|
|
|
if (is_a($result, 'PEAR_Error')) {
|
|
$this->response[] = "Connection failed: " . $result->getMessage();
|
|
|
|
list($code,) = $this->conn->getResponse();
|
|
$this->error = array('label' => 'smtpconnerror', 'vars' => array('code' => $code));
|
|
$this->conn = null;
|
|
|
|
return false;
|
|
}
|
|
|
|
// workaround for timeout bug in Net_SMTP 1.5.[0-1] (#1487843)
|
|
if (method_exists($this->conn, 'setTimeout')
|
|
&& ($timeout = ini_get('default_socket_timeout'))
|
|
) {
|
|
$this->conn->setTimeout($timeout);
|
|
}
|
|
|
|
$smtp_user = str_replace('%u', $rcube->get_user_name(), $CONFIG['smtp_user']);
|
|
$smtp_pass = str_replace('%p', $rcube->get_user_password(), $CONFIG['smtp_pass']);
|
|
$smtp_auth_type = $CONFIG['smtp_auth_type'] ?: null;
|
|
|
|
if (!empty($CONFIG['smtp_auth_cid'])) {
|
|
$smtp_authz = $smtp_user;
|
|
$smtp_user = $CONFIG['smtp_auth_cid'];
|
|
$smtp_pass = $CONFIG['smtp_auth_pw'];
|
|
}
|
|
|
|
// attempt to authenticate to the SMTP server
|
|
if (($smtp_user && $smtp_pass) || ($smtp_auth_type == 'GSSAPI')) {
|
|
// IDNA Support
|
|
if (strpos($smtp_user, '@')) {
|
|
$smtp_user = rcube_utils::idn_to_ascii($smtp_user);
|
|
}
|
|
|
|
$result = $this->conn->auth($smtp_user, $smtp_pass, $smtp_auth_type, $use_tls, $smtp_authz);
|
|
|
|
if (is_a($result, 'PEAR_Error')) {
|
|
list($code,) = $this->conn->getResponse();
|
|
$this->error = array('label' => 'smtpautherror', 'vars' => array('code' => $code));
|
|
$this->response[] = 'Authentication failure: ' . $result->getMessage()
|
|
. ' (Code: ' . $result->getCode() . ')';
|
|
|
|
$this->disconnect();
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Function for sending mail
|
|
*
|
|
* @param string Sender e-Mail address
|
|
*
|
|
* @param mixed Either a comma-separated list of recipients
|
|
* (RFC822 compliant), or an array of recipients,
|
|
* each RFC822 valid. This may contain recipients not
|
|
* specified in the headers, for Bcc:, resending
|
|
* messages, etc.
|
|
* @param mixed The message headers to send with the mail
|
|
* Either as an associative array or a finally
|
|
* formatted string
|
|
* @param mixed The full text of the message body, including any Mime parts
|
|
* or file handle
|
|
* @param array Delivery options (e.g. DSN request)
|
|
*
|
|
* @return bool Returns true on success, or false on error
|
|
*/
|
|
public function send_mail($from, $recipients, &$headers, &$body, $opts=null)
|
|
{
|
|
if (!is_object($this->conn)) {
|
|
return false;
|
|
}
|
|
|
|
// prepare message headers as string
|
|
if (is_array($headers)) {
|
|
if (!($headerElements = $this->_prepare_headers($headers))) {
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
|
|
list($from, $text_headers) = $headerElements;
|
|
}
|
|
else if (is_string($headers)) {
|
|
$text_headers = $headers;
|
|
}
|
|
|
|
// exit if no from address is given
|
|
if (!isset($from)) {
|
|
$this->reset();
|
|
$this->response[] = "No From address has been provided";
|
|
return false;
|
|
}
|
|
|
|
// prepare list of recipients
|
|
$recipients = $this->_parse_rfc822($recipients);
|
|
if (is_a($recipients, 'PEAR_Error')) {
|
|
$this->error = array('label' => 'smtprecipientserror');
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
|
|
$exts = $this->conn->getServiceExtensions();
|
|
|
|
// RFC3461: Delivery Status Notification
|
|
if ($opts['dsn']) {
|
|
if (isset($exts['DSN'])) {
|
|
$from_params = 'RET=HDRS';
|
|
$recipient_params = 'NOTIFY=SUCCESS,FAILURE';
|
|
}
|
|
}
|
|
|
|
// RFC6531: request SMTPUTF8 if needed
|
|
if (preg_match('/[^\x00-\x7F]/', $from . implode('', $recipients))) {
|
|
if (isset($exts['SMTPUTF8'])) {
|
|
$from_params = ltrim($from_params . ' SMTPUTF8');
|
|
}
|
|
else {
|
|
$this->error = array('label' => 'smtputf8error');
|
|
$this->response[] = "SMTP server does not support unicode in email addresses";
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// RFC2298.3: remove envelope sender address
|
|
if (empty($opts['mdn_use_from'])
|
|
&& preg_match('/Content-Type: multipart\/report/', $text_headers)
|
|
&& preg_match('/report-type=disposition-notification/', $text_headers)
|
|
) {
|
|
$from = '';
|
|
}
|
|
|
|
// set From: address
|
|
$result = $this->conn->mailFrom($from, $from_params);
|
|
if (is_a($result, 'PEAR_Error')) {
|
|
$err = $this->conn->getResponse();
|
|
$this->error = array('label' => 'smtpfromerror', 'vars' => array(
|
|
'from' => $from, 'code' => $err[0], 'msg' => $err[1]));
|
|
$this->response[] = "Failed to set sender '$from'. "
|
|
. $err[1] . ' (Code: ' . $err[0] . ')';
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
|
|
// set mail recipients
|
|
foreach ($recipients as $recipient) {
|
|
$result = $this->conn->rcptTo($recipient, $recipient_params);
|
|
if (is_a($result, 'PEAR_Error')) {
|
|
$err = $this->conn->getResponse();
|
|
$this->error = array('label' => 'smtptoerror', 'vars' => array(
|
|
'to' => $recipient, 'code' => $err[0], 'msg' => $err[1]));
|
|
$this->response[] = "Failed to add recipient '$recipient'. "
|
|
. $err[1] . ' (Code: ' . $err[0] . ')';
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (is_resource($body)) {
|
|
// file handle
|
|
$data = $body;
|
|
|
|
if ($text_headers) {
|
|
$text_headers = preg_replace('/[\r\n]+$/', '', $text_headers);
|
|
}
|
|
}
|
|
else {
|
|
// Concatenate headers and body so it can be passed by reference to SMTP_CONN->data
|
|
// so preg_replace in SMTP_CONN->quotedata will store a reference instead of a copy.
|
|
// We are still forced to make another copy here for a couple ticks so we don't really
|
|
// get to save a copy in the method call.
|
|
$data = $text_headers . "\r\n" . $body;
|
|
|
|
// unset old vars to save data and so we can pass into SMTP_CONN->data by reference.
|
|
unset($text_headers, $body);
|
|
}
|
|
|
|
// Send the message's headers and the body as SMTP data.
|
|
$result = $this->conn->data($data, $text_headers);
|
|
if (is_a($result, 'PEAR_Error')) {
|
|
$err = $this->conn->getResponse();
|
|
$err_label = 'smtperror';
|
|
$err_vars = array();
|
|
|
|
if (!in_array($err[0], array(354, 250, 221))) {
|
|
$msg = sprintf('[%d] %s', $err[0], $err[1]);
|
|
}
|
|
else {
|
|
$msg = $result->getMessage();
|
|
|
|
if (strpos($msg, 'size exceeds')) {
|
|
$err_label = 'smtpsizeerror';
|
|
$exts = $this->conn->getServiceExtensions();
|
|
$limit = $exts['SIZE'];
|
|
|
|
if ($limit) {
|
|
$msg .= " (Limit: $limit)";
|
|
$rcube = rcube::get_instance();
|
|
if (method_exists($rcube, 'show_bytes')) {
|
|
$limit = $rcube->show_bytes($limit);
|
|
}
|
|
|
|
$err_vars['limit'] = $limit;
|
|
$err_label = 'smtpsizeerror';
|
|
}
|
|
}
|
|
}
|
|
|
|
$err_vars['msg'] = $msg;
|
|
|
|
$this->error = array('label' => $err_label, 'vars' => $err_vars);
|
|
$this->response[] = "Failed to send data. " . $msg;
|
|
$this->reset();
|
|
return false;
|
|
}
|
|
|
|
$this->response[] = implode(': ', $this->conn->getResponse());
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Reset the global SMTP connection
|
|
*/
|
|
public function reset()
|
|
{
|
|
if (is_object($this->conn)) {
|
|
$this->conn->rset();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Disconnect the global SMTP connection
|
|
*/
|
|
public function disconnect()
|
|
{
|
|
if (is_object($this->conn)) {
|
|
$this->conn->disconnect();
|
|
$this->conn = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is our own debug handler for the SMTP connection
|
|
*/
|
|
public function debug_handler($smtp, $message)
|
|
{
|
|
// catch AUTH commands and set anonymization flag for subsequent sends
|
|
if (preg_match('/^Send: AUTH ([A-Z]+)/', $message, $m)) {
|
|
$this->anonymize_log = $m[1] == 'LOGIN' ? 2 : 1;
|
|
}
|
|
// anonymize this log entry
|
|
else if ($this->anonymize_log > 0 && strpos($message, 'Send:') === 0 && --$this->anonymize_log == 0) {
|
|
$message = sprintf('Send: ****** [%d]', strlen($message) - 8);
|
|
}
|
|
|
|
if (($len = strlen($message)) > self::DEBUG_LINE_LENGTH) {
|
|
$diff = $len - self::DEBUG_LINE_LENGTH;
|
|
$message = substr($message, 0, self::DEBUG_LINE_LENGTH)
|
|
. "... [truncated $diff bytes]";
|
|
}
|
|
|
|
rcube::write_log('smtp', preg_replace('/\r\n$/', '', $message));
|
|
}
|
|
|
|
/**
|
|
* Get error message
|
|
*/
|
|
public function get_error()
|
|
{
|
|
return $this->error;
|
|
}
|
|
|
|
/**
|
|
* Get server response messages array
|
|
*/
|
|
public function get_response()
|
|
{
|
|
return $this->response;
|
|
}
|
|
|
|
/**
|
|
* Take an array of mail headers and return a string containing
|
|
* text usable in sending a message.
|
|
*
|
|
* @param array $headers The array of headers to prepare, in an associative
|
|
* array, where the array key is the header name (ie,
|
|
* 'Subject'), and the array value is the header
|
|
* value (ie, 'test'). The header produced from those
|
|
* values would be 'Subject: test'.
|
|
*
|
|
* @return mixed Returns false if it encounters a bad address,
|
|
* otherwise returns an array containing two
|
|
* elements: Any From: address found in the headers,
|
|
* and the plain text version of the headers.
|
|
*/
|
|
private function _prepare_headers($headers)
|
|
{
|
|
$lines = array();
|
|
$from = null;
|
|
|
|
foreach ($headers as $key => $value) {
|
|
if (strcasecmp($key, 'From') === 0) {
|
|
$addresses = $this->_parse_rfc822($value);
|
|
|
|
if (is_array($addresses)) {
|
|
$from = $addresses[0];
|
|
}
|
|
|
|
// Reject envelope From: addresses with spaces.
|
|
if (strpos($from, ' ') !== false) {
|
|
return false;
|
|
}
|
|
|
|
$lines[] = $key . ': ' . $value;
|
|
}
|
|
else if (strcasecmp($key, 'Received') === 0) {
|
|
$received = array();
|
|
if (is_array($value)) {
|
|
foreach ($value as $line) {
|
|
$received[] = $key . ': ' . $line;
|
|
}
|
|
}
|
|
else {
|
|
$received[] = $key . ': ' . $value;
|
|
}
|
|
|
|
// Put Received: headers at the top. Spam detectors often
|
|
// flag messages with Received: headers after the Subject:
|
|
// as spam.
|
|
$lines = array_merge($received, $lines);
|
|
}
|
|
else {
|
|
// If $value is an array (i.e., a list of addresses), convert
|
|
// it to a comma-delimited string of its elements (addresses).
|
|
if (is_array($value)) {
|
|
$value = implode(', ', $value);
|
|
}
|
|
|
|
$lines[] = $key . ': ' . $value;
|
|
}
|
|
}
|
|
|
|
return array($from, implode(self::SMTP_MIME_CRLF, $lines) . self::SMTP_MIME_CRLF);
|
|
}
|
|
|
|
/**
|
|
* Take a set of recipients and parse them, returning an array of
|
|
* bare addresses (forward paths) that can be passed to sendmail
|
|
* or an smtp server with the rcpt to: command.
|
|
*
|
|
* @param mixed Either a comma-separated list of recipients
|
|
* (RFC822 compliant), or an array of recipients,
|
|
* each RFC822 valid.
|
|
*
|
|
* @return array An array of forward paths (bare addresses).
|
|
*/
|
|
private function _parse_rfc822($recipients)
|
|
{
|
|
// if we're passed an array, assume addresses are valid and implode them before parsing.
|
|
if (is_array($recipients)) {
|
|
$recipients = implode(', ', $recipients);
|
|
}
|
|
|
|
$addresses = array();
|
|
$recipients = preg_replace('/[\s\t]*\r?\n/', '', $recipients);
|
|
$recipients = rcube_utils::explode_quoted_string(',', $recipients);
|
|
|
|
reset($recipients);
|
|
foreach ($recipients as $recipient) {
|
|
$a = rcube_utils::explode_quoted_string(' ', $recipient);
|
|
foreach ($a as $word) {
|
|
$word = trim($word);
|
|
$len = strlen($word);
|
|
|
|
if ($len && strpos($word, "@") > 0 && $word[$len-1] != '"') {
|
|
$word = preg_replace('/^<|>$/', '', $word);
|
|
if (!in_array($word, $addresses)) {
|
|
array_push($addresses, $word);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $addresses;
|
|
}
|
|
}
|