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Code Issues Releases Wiki Activity

Refactor w/ file upload class

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This commit is contained in:
billz 2021-07-03 23:03:14 +01:00
parent 8ae0fce366
commit b7a9c6254e
1 changed files with 28 additions and 50 deletions
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78
includes/openvpn.php
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@ -3,6 +3,7 @@
require_once 'includes/status_messages.php';
require_once 'includes/config.php';
require_once 'includes/wifi_functions.php';
require_once 'app/lib/uploader.php';
getWifiInterface();
@ -87,6 +88,18 @@ function DisplayOpenVPNConfig()
);
}
/* File upload callback object
*
*/
class validation {
public function check_name_length($object)
{
if (strlen($object->file['filename']) > 255) {
$object->set_error('File name is too long.');
}
}
}
/**
* Validates uploaded .ovpn file, adds auth-user-pass and
* stores auth credentials in login.conf. Copies files from
@ -100,8 +113,10 @@ function DisplayOpenVPNConfig()
*/
function SaveOpenVPNConfig($status, $file, $authUser, $authPassword)
{
$tmp_ovpnclient = '/tmp/ovpnclient.ovpn';
$tmp_authdata = '/tmp/authdata';
define('KB', 1024);
$tmp_destdir = '/tmp/';
$tmp_ovpnclient = $tmp_destdir .'ovpn/ovpnclient.ovpn';
$tmp_authdata = $tmp_destdir .'ovpn/authdata';
$auth_flag = 0;
try {
@ -110,61 +125,24 @@ function SaveOpenVPNConfig($status, $file, $authUser, $authPassword)
throw new RuntimeException('Invalid parameters');
}
// Parse returned errors
switch ($file['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('OpenVPN configuration file not sent');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit');
default:
throw new RuntimeException('Unknown errors');
}
$upload = Upload::factory('ovpn',$tmp_destdir);
$upload->set_max_file_size(64*KB);
$upload->set_allowed_mime_types(array('ovpn' => 'text/plain'));
$upload->file($file);
// Validate extension
$ext = pathinfo($file['name'], PATHINFO_EXTENSION);
if ($ext != 'ovpn') {
throw new RuntimeException('Invalid file extension');
}
$validation = new validation;
$upload->callbacks($validation, array('check_name_length'));
$results = $upload->upload();
// Validate MIME type
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $ext = array_search(
$finfo->file($file['tmp_name']),
array(
'ovpn' => 'text/plain'
),
true
)
) {
throw new RuntimeException('Invalid file format');
}
// Validate filesize
define('KB', 1024);
if ($file['size'] > 64*KB) {
throw new RuntimeException('File size limit exceeded');
}
// Use safe filename, save to /tmp
if (!move_uploaded_file(
$file['tmp_name'],
sprintf(
'/tmp/%s.%s',
'ovpnclient',
$ext
)
)
) {
throw new RuntimeException('Unable to move uploaded file');
if (!empty($results['errors'])) {
throw new RuntimeException($results['errors'][0]);
}
echo '<pre>' . var_export($results, true) . '</pre>';
#die();
// Good file upload, update auth credentials if present
if (!empty($authUser) && !empty($authPassword)) {
$auth_flag = 1;
// Move tmp authdata to /etc/openvpn/login.conf
$auth.= $authUser .PHP_EOL . $authPassword .PHP_EOL;
file_put_contents($tmp_authdata, $auth);
chmod($tmp_authdata, 0644);