| 1 |
<?php |
| 2 |
/** |
| 3 |
* @package RSFirewall! |
| 4 |
* @copyright (c) 2018 RSJoomla! |
| 5 |
* @link https://www.rsjoomla.com |
| 6 |
* @license GNU General Public License http://www.gnu.org/licenses/gpl-3.0.en.html |
| 7 |
*/ |
| 8 |
|
| 9 |
if ( ! defined( 'WPINC' ) ) { |
| 10 |
die; |
| 11 |
} |
| 12 |
|
| 13 |
class RSFirewall_Model_Fix extends RSFirewall_Model { |
| 14 |
const DS = DIRECTORY_SEPARATOR; |
| 15 |
|
| 16 |
/** |
| 17 |
* Changes usernames |
| 18 |
* |
| 19 |
* @param $args string username |
| 20 |
* |
| 21 |
* @since 1.0.0 |
| 22 |
* @throws Exception |
| 23 |
* |
| 24 |
* @return array |
| 25 |
*/ |
| 26 |
public function admin_username_fix( $args ) { |
| 27 |
$errors = array(); |
| 28 |
$arguments = array( |
| 29 |
'search' => $args['new_user'], |
| 30 |
); |
| 31 |
|
| 32 |
$common = array( |
| 33 |
'admin', |
| 34 |
'administrator', |
| 35 |
'wp-admin' |
| 36 |
); |
| 37 |
|
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$users = get_users( $arguments ); |
| 39 |
|
| 40 |
if ( ! empty( $users ) ) { |
| 41 |
$error = esc_html__( 'An identical username already exists.', 'rsfirewall' ); |
| 42 |
foreach ( $users as $user ) { |
| 43 |
if ( $args['new_user'] === $user->user_login ) { |
| 44 |
$errors[] = $error; |
| 45 |
} |
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} |
| 47 |
} |
| 48 |
|
| 49 |
if ( $args['old_user'] == $args['new_user'] ) { |
| 50 |
$errors[] = esc_html__( 'Username should not be identical.', 'rsfirewall' ); |
| 51 |
} |
| 52 |
|
| 53 |
if ( $args['new_user'] == '' ) { |
| 54 |
$errors[] = esc_html__( 'Username can\'t be an empty string.', 'rsfirewall' ); |
| 55 |
} |
| 56 |
|
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if ( strlen( $args['new_user'] ) < 5 ) { |
| 58 |
$errors[] = esc_html__( 'Your username is too short. We recommend at least 5 characters.', 'rsfirewall' ); |
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} |
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|
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if ( in_array( $args['new_user'], $common ) ) { |
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$errors[] = esc_html__( 'The username is too common', 'rsfirewall' ); |
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} |
| 64 |
|
| 65 |
|
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// Do not add by mistake an unwanted admin username |
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$unwanted = RSFirewall_Core_Vulnerabilities::$unwanted_admins; |
| 68 |
foreach ($unwanted as $u_admin) { |
| 69 |
if (stripos($args['new_user'], $u_admin) !== false) { |
| 70 |
$errors[] = esc_html__( 'The username is reported as dangerous! Please reconsider.', 'rsfirewall' ); |
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break; |
| 72 |
} |
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} |
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|
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|
| 76 |
if ( count( $errors ) > 0 ) { |
| 77 |
$return['weak_username'] = true; |
| 78 |
$return['message'] = esc_html__( 'We recommend the following adjustments to the username:', 'rsfirewall' ); |
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$return['details'] = implode( '<br />', $errors ); |
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|
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return $return; |
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} |
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|
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$return = array( |
| 85 |
'weak_username' => false, |
| 86 |
'message' => esc_html__( 'The username was changed succesfully!', 'rsfirewall' ) |
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); |
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|
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global $wpdb; |
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$result = $wpdb->update( |
| 91 |
$wpdb->prefix . 'users', |
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array( 'user_login' => $args['new_user'] ), |
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array( 'user_login' => $args['old_user'] ), |
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$format = NULL, |
| 95 |
$where_format = NULL |
| 96 |
); |
| 97 |
|
| 98 |
if ( false === $result ) { |
| 99 |
$return['message'] = esc_html__( 'Username could not be changed, please try again.', 'rsfirewall' ); |
| 100 |
} |
| 101 |
|
| 102 |
return $return; |
| 103 |
|
| 104 |
} |
| 105 |
|
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/** |
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* Deletes admin users |
| 108 |
* |
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* @param $args int user_id |
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* |
| 111 |
* @since 1.0.0 |
| 112 |
* @throws Exception |
| 113 |
*/ |
| 114 |
public function delete_admin_user($args) { |
| 115 |
if (!isset($args['user_id']) || empty($args['user_id'])) { |
| 116 |
throw new Exception(esc_html__( 'No User ID is specified.', 'rsfirewall' )); |
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} |
| 118 |
|
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// make sure the id is an int |
| 120 |
$user_id = (int) $args['user_id']; |
| 121 |
|
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// get current logged in user - cannot delete own user |
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$current_user = wp_get_current_user(); |
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|
| 125 |
if ($user_id == $current_user->ID) { |
| 126 |
throw new Exception(esc_html__( 'Cannot delete own user.', 'rsfirewall' )); |
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} |
| 128 |
|
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// check if the user actually exist |
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$user = get_user_by('ID', $user_id); |
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|
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if (!$user) { |
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throw new Exception(esc_html__( 'This user does not exist.', 'rsfirewall' )); |
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} |
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|
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// if somehow the function is triggered with an ID that is not an administrator |
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if ($user->roles[0] != 'administrator') { |
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throw new Exception(esc_html__( 'This user is not an administrator.', 'rsfirewall' )); |
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} |
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|
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// Delete the user if all above passes |
| 142 |
if (!wp_delete_user($user->ID)) { |
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throw new Exception(esc_html__( 'Something went wrong.', 'rsfirewall' )); |
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} |
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} |
| 146 |
|
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/** |
| 148 |
* @param $name |
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* |
| 150 |
* @return string |
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*/ |
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public function getINI( $name ) { |
| 153 |
return ini_get( $name ); |
| 154 |
} |
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|
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/** |
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* @param $name |
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* @param string $against |
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* |
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* @return bool |
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*/ |
| 162 |
public function compareINI( $name, $against = '1' ) { |
| 163 |
return $this->getINI( $name ) == $against; |
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} |
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|
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/** |
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* Helper function to build the PHP ini file |
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* |
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* @return string |
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*/ |
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public function build_php_ini() { |
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$isPHP54 = version_compare( phpversion(), '5.4.0', '>=' ); |
| 173 |
$isWin = substr( PHP_OS, 0, 3 ) == 'WIN'; |
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|
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$contents = array( |
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'allow_url_include=Off', |
| 177 |
'disable_functions=system, shell_exec, passthru, exec, phpinfo, popen, proc_open' |
| 178 |
); |
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|
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if ( ! $isPHP54 ) { |
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$contents[] = 'register_globals=Off'; |
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$contents[] = 'safe_mode=Off'; |
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} |
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|
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if ( $this->compareINI( 'open_basedir', '' ) ) { |
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$paths = array(); |
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$delimiter = $isWin ? ';' : ':'; |
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|
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// add the path to the WP installation |
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if ( get_home_path() ) { |
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$paths[] = get_home_path(); |
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} |
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|
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// try to add the path for the server temporary folder |
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if ( $path = $this->getINI( 'upload_tmp_dir' ) ) { |
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$paths[] = $path; |
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} |
| 198 |
if ( $temp_dir = sys_get_temp_dir() ) { |
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$paths[] = $temp_dir; |
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} |
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// try to add the path for the server session folder |
| 202 |
if ( $path = $this->getINI( 'session.save_path' ) ) { |
| 203 |
$paths[] = $path; |
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} |
| 205 |
|
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$paths = array_filter( $paths ); |
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|
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$contents[] = 'open_basedir=' . implode( $delimiter, array_unique( $paths ) ); |
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} else { |
| 210 |
$contents[] = 'open_basedir=' . $this->getINI( 'open_basedir' ); |
| 211 |
} |
| 212 |
|
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return implode( "\r\n", $contents ); |
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} |
| 215 |
|
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/** |
| 217 |
* Function to save the php ini |
| 218 |
* |
| 219 |
* @param $content |
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* |
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* @since 1.0.0 |
| 222 |
* @return bool |
| 223 |
*/ |
| 224 |
public function save_php_ini( $content ) { |
| 225 |
|
| 226 |
$access_type = get_filesystem_method(); |
| 227 |
if ( $access_type === 'direct' ) { |
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/* you can safely run request_filesystem_credentials() without any issues and don't need to worry about passing in a URL */ |
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$creds = request_filesystem_credentials( site_url() . '/wp-admin/', '', false, false, array() ); |
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|
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/* initialize the API */ |
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if ( ! WP_Filesystem( $creds ) ) { |
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/* any problems and we exit */ |
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return false; |
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} |
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|
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global $wp_filesystem; |
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/* do our file manipulations below */ |
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$wp_filesystem->put_contents( |
| 240 |
get_home_path() . '/php.ini', |
| 241 |
$content, |
| 242 |
FS_CHMOD_FILE // predefined mode settings for WP files |
| 243 |
); |
| 244 |
|
| 245 |
return true; |
| 246 |
} |
| 247 |
|
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return false; |
| 249 |
|
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Attempts to fix the php directives by creating a local php ini file |
| 254 |
* |
| 255 |
* @return array |
| 256 |
* @since 1.0.0 |
| 257 |
*/ |
| 258 |
public function php_configuration_fix() { |
| 259 |
$result = array( |
| 260 |
'success' => true, |
| 261 |
'message' => esc_html__( 'RSFirewall! succesfully created the php.ini file', 'rsfirewall' ) |
| 262 |
); |
| 263 |
|
| 264 |
$contents = $this->build_php_ini(); |
| 265 |
// using @ because file_put_contents outputs a warning when unsuccessful |
| 266 |
if ( ! @$this->save_php_ini( $contents ) ) { |
| 267 |
$error = error_get_last(); |
| 268 |
$result['result'] = false; |
| 269 |
$result['message'] = $error['message']; |
| 270 |
$result['details'] = $contents; |
| 271 |
} |
| 272 |
|
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return $result; |
| 274 |
} |
| 275 |
|
| 276 |
/** |
| 277 |
* Function that handles the ignoring of hashes/files |
| 278 |
* |
| 279 |
* @param $args |
| 280 |
* @param $type |
| 281 |
* @param $table |
| 282 |
* |
| 283 |
* @return array |
| 284 |
* @throws Exception |
| 285 |
* |
| 286 |
* @since 1.0.0 |
| 287 |
*/ |
| 288 |
public function ignore_stuff( $args, $type, $table ) { |
| 289 |
global $wpdb, $wp_version; |
| 290 |
$wpdb->show_errors(); |
| 291 |
$table = $wpdb->prefix . $table; |
| 292 |
$result = array(); |
| 293 |
$added = 0; |
| 294 |
|
| 295 |
switch ( $type ) { |
| 296 |
case 'files': |
| 297 |
foreach ( $args['files'] as $file ) { |
| 298 |
$query = $wpdb->insert( |
| 299 |
$table, |
| 300 |
array( |
| 301 |
'path' => RSFIREWALL_SITE . self::DS . stripslashes( $file ), |
| 302 |
'type' => 'ignore_file', |
| 303 |
) |
| 304 |
); |
| 305 |
|
| 306 |
if ( false === $query ) { |
| 307 |
$result['result'] = false; |
| 308 |
throw new Exception ( esc_html__( 'Could not add the files to the ignored table. Please try again.', 'rsfirewall' ) ); |
| 309 |
} |
| 310 |
|
| 311 |
$result['result'] = true; |
| 312 |
$added++; |
| 313 |
} |
| 314 |
break; |
| 315 |
case 'hashes': |
| 316 |
foreach ( $args['data'] as $file ) { |
| 317 |
// set the proper flag |
| 318 |
$flag = (isset($file['type']) && $file['type'] == 'missing') ? 'M' : ''; |
| 319 |
|
| 320 |
// check if the file is the 'protect' type. |
| 321 |
$is_protect = false; |
| 322 |
if (isset($file['version']) && $file['version'] == 'protect') { |
| 323 |
$is_protect = true; |
| 324 |
} |
| 325 |
|
| 326 |
// full path to the file |
| 327 |
$file_path = $is_protect ? $file['file'] : RSFIREWALL_SITE . '/' . $file['file']; |
| 328 |
|
| 329 |
if (file_exists($file_path) && !is_readable($file_path)) { |
| 330 |
$result['result'] = false; |
| 331 |
throw new Exception ( sprintf(esc_html__( 'Could not open %s for reading. Please make sure you have read permissions.', 'rsfirewall' ), $file_path) ); |
| 332 |
} |
| 333 |
|
| 334 |
if ($flag == 'M') { |
| 335 |
// no hash for a missing file |
| 336 |
$file_hash = ''; |
| 337 |
} else { |
| 338 |
// this check is done only when the file exists and has the wrong hash |
| 339 |
if (!is_file($file_path)) { |
| 340 |
$result['result'] = false; |
| 341 |
throw new Exception ( sprintf(esc_html__( '%s: file not found.', 'rsfirewall' ), $file_path) ); |
| 342 |
} |
| 343 |
// calculate the hash |
| 344 |
$file_hash = md5_file($file_path); |
| 345 |
} |
| 346 |
|
| 347 |
if ($is_protect) { |
| 348 |
// Rebuild the protected files hashes |
| 349 |
$id = $wpdb->get_var("SELECT `id` FROM $table WHERE `file`='".$file['file']."' AND `type`='protect' LIMIT 1"); |
| 350 |
} else { |
| 351 |
// Rebuild or add core files hashes |
| 352 |
$id = $wpdb->get_var("SELECT `id` FROM $table WHERE `file`='" . $file['file'] . "' AND (`type`='ignore' OR `type`='" . $wp_version . "') LIMIT 1"); |
| 353 |
} |
| 354 |
|
| 355 |
// The update is available for all file types |
| 356 |
if (!is_null($id)) { |
| 357 |
$query = $wpdb->update( |
| 358 |
$table, |
| 359 |
array( |
| 360 |
'hash' => $file_hash, |
| 361 |
'flag' => $flag, |
| 362 |
'date' => current_time('mysql'), |
| 363 |
), |
| 364 |
array( |
| 365 |
'id' => $id, |
| 366 |
) |
| 367 |
); |
| 368 |
} else if(!$is_protect) { |
| 369 |
$query = $wpdb->insert( |
| 370 |
$table, |
| 371 |
array( |
| 372 |
'file' => $file['file'], |
| 373 |
'hash' => $file_hash, |
| 374 |
'type' => 'ignore', |
| 375 |
'flag' => $flag, |
| 376 |
'date' => current_time('mysql'), |
| 377 |
) |
| 378 |
); |
| 379 |
} |
| 380 |
|
| 381 |
if (!$is_protect && false === $query ) { |
| 382 |
$result['result'] = false; |
| 383 |
throw new Exception ( esc_html__( 'Could not add the files to the hashes table. Please try again.', 'rsfirewall' ) ); |
| 384 |
} |
| 385 |
|
| 386 |
$result['result'] = true; |
| 387 |
$added++; |
| 388 |
} |
| 389 |
break; |
| 390 |
} |
| 391 |
|
| 392 |
if ($added) |
| 393 |
{ |
| 394 |
if ($type == 'files') |
| 395 |
{ |
| 396 |
$result['message'] = sprintf( esc_html__( '%d file(s) was added to the ignored table.', 'rsfirewall' ), $added ); |
| 397 |
} |
| 398 |
else if ($type == 'hashes') |
| 399 |
{ |
| 400 |
$result['message'] = sprintf( esc_html__( '%d file(s) was added to the hashes table.', 'rsfirewall' ), $added ); |
| 401 |
} |
| 402 |
} |
| 403 |
|
| 404 |
return $result; |
| 405 |
} |
| 406 |
|
| 407 |
/** |
| 408 |
* Function that sets the file/folder permissions |
| 409 |
* |
| 410 |
* @param $paths |
| 411 |
* @param $perms |
| 412 |
* |
| 413 |
* @return array |
| 414 |
* |
| 415 |
* @since 1.0.0 |
| 416 |
*/ |
| 417 |
public function set_permissions( $paths, $perms ) { |
| 418 |
$success = array(); |
| 419 |
if ( ! is_array( $paths ) ) { |
| 420 |
$paths = (array) $paths; |
| 421 |
} |
| 422 |
|
| 423 |
foreach ( $paths as $path ) { |
| 424 |
$success[] = (int) @chmod( RSFIREWALL_SITE . self::DS . $path, octdec( $perms ) ); |
| 425 |
} |
| 426 |
|
| 427 |
// the result will be an array with the same length as the input array |
| 428 |
// 0 for failure, 1 for success |
| 429 |
return $success; |
| 430 |
} |
| 431 |
|
| 432 |
/** |
| 433 |
* Function to delete the post revisions from the database |
| 434 |
* |
| 435 |
* @return array |
| 436 |
* |
| 437 |
* @since 1.0.0 |
| 438 |
*/ |
| 439 |
public function fix_delete_revisions() { |
| 440 |
global $wpdb; |
| 441 |
$table = $wpdb->prefix . 'posts'; |
| 442 |
$result = $wpdb->delete( $table, array( 'post_type' => 'revision' ) ); |
| 443 |
|
| 444 |
if ( $result ) { |
| 445 |
return array( |
| 446 |
'result' => true, |
| 447 |
'message' => sprintf( esc_html__( 'We managed to delete %d revisions from the database', 'rsfirewall' ), $result ), |
| 448 |
); |
| 449 |
} |
| 450 |
|
| 451 |
return array( |
| 452 |
'result' => false, |
| 453 |
'message' => esc_html__( 'No posts have been deleted. Please try again.', 'rsfirewall' ) |
| 454 |
); |
| 455 |
} |
| 456 |
|
| 457 |
/** |
| 458 |
* Remove the ip from the blocklist |
| 459 |
* |
| 460 |
* @param args |
| 461 |
* |
| 462 |
* @since 1.0.0 |
| 463 |
* |
| 464 |
* @return array |
| 465 |
*/ |
| 466 |
public function remove_ip( $args ) { |
| 467 |
$result = wp_delete_post( $args, true ); |
| 468 |
|
| 469 |
if ( ! $result ) { |
| 470 |
return array( |
| 471 |
'result' => false, |
| 472 |
'message' => esc_html__( 'The entry wasn\'t be deleted from the database. Please try again.', 'rsfirewall' ) |
| 473 |
); |
| 474 |
} |
| 475 |
|
| 476 |
return array( |
| 477 |
'result' => true, |
| 478 |
'message' => esc_html__( 'This entry was deleted from the database.', 'rsfirewall' ), |
| 479 |
); |
| 480 |
|
| 481 |
} |
| 482 |
} |
