/usr/share/php/Horde/Mail/Autoconfig/Server/Pop3.php is in php-horde-mail-autoconfig 1.0.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Copyright 2014-2015 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2014-2015 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Mail_Autoconfig
*/
/**
* Autoconfigured configuration details for a POP3 server (RFC 1939/STD 53).
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2014-2015 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Mail_Autoconfig
*/
class Horde_Mail_Autoconfig_Server_Pop3 extends Horde_Mail_Autoconfig_Server
{
/**
* Default POP3 port (RFC 1939 [3]).
*/
public $port = 110;
/**
*/
public function valid(array $opts = array())
{
if (empty($opts['users'])) {
unset($opts['auth']);
/* We still need a username as it is required by the POP3
* object. */
$opts['users'] = array('testing');
}
switch ($this->tls) {
case 'starttls':
$secure = 'tls';
break;
case 'tls':
$secure = 'ssl';
break;
default:
$secure = !empty($opts['insecure']) ?: 'tls';
break;
}
foreach ($opts['users'] as $user) {
try {
$pop3 = new Horde_Imap_Client_Socket_Pop3(array(
'hostspec' => $this->host,
'password' => isset($opts['auth']) ? $opts['auth'] : null,
'port' => $this->port,
'secure' => $secure,
'timeout' => 2,
'username' => $user
));
if (isset($opts['auth'])) {
$pop3->login();
$this->username = $user;
} else {
$pop3->noop();
}
if (isset($opts['auth'])) {
$this->username = $user;
}
if ($secure === 'tls') {
$this->tls = 'starttls';
} elseif ($secure === true) {
$this->tls = $pop3->isSecureConnection()
? 'starttls'
: false;
}
$pop3->shutdown();
return true;
} catch (Horde_Imap_Client_Exception $e) {}
}
return false;
}
}
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