| 1 |
<?php |
| 2 |
/* |
| 3 |
+=====================================================================+ |
| 4 |
| _ _ _ _ ____ | |
| 5 |
| | \ | (_)_ __ (_) __ _/ ___| ___ __ _ _ __ _ __ ___ _ __ | |
| 6 |
| | \| | | '_ \ | |/ _` \___ \ / __/ _` | '_ \| '_ \ / _ \ '__| | |
| 7 |
| | |\ | | | | || | (_| |___) | (_| (_| | | | | | | | __/ | | |
| 8 |
| |_| \_|_|_| |_|/ |\__,_|____/ \___\__,_|_| |_|_| |_|\___|_| | |
| 9 |
| |__/ | |
| 10 |
| | |
| 11 |
| (c) NinTechNet ~ https://nintechnet.com/ | |
| 12 |
+=====================================================================+ |
| 13 |
*/ |
| 14 |
|
| 15 |
if (! defined( 'ABSPATH' ) ) { die( 'Forbidden' ); } |
| 16 |
|
| 17 |
// ===================================================================== |
| 18 |
// We don't want to be bothered by other themes/plugins admin notices. |
| 19 |
|
| 20 |
add_action('admin_head', 'nscan_hide_admin_notices'); |
| 21 |
|
| 22 |
function nscan_hide_admin_notices() { |
| 23 |
if ( isset( $_GET['page'] ) && $_GET['page'] == 'NinjaScanner' ) { |
| 24 |
remove_all_actions('admin_notices'); |
| 25 |
remove_all_actions('all_admin_notices'); |
| 26 |
} |
| 27 |
} |
| 28 |
|
| 29 |
// ===================================================================== 2023-06-07 |
| 30 |
// Clean-up the scan temp files. |
| 31 |
|
| 32 |
function nscan_cleanup_tempfiles() { |
| 33 |
|
| 34 |
global $nscan_temp_files; |
| 35 |
|
| 36 |
foreach( $nscan_temp_files as $file ) { |
| 37 |
if ( file_exists( $file ) ) { |
| 38 |
unlink( $file ); |
| 39 |
} |
| 40 |
} |
| 41 |
} |
| 42 |
|
| 43 |
// ===================================================================== 2023-06-07 |
| 44 |
// Disable PHP display_errors so that notice, warning and error messages |
| 45 |
// don't show up in the AJAX response. |
| 46 |
|
| 47 |
function nscan_hide_errors() { |
| 48 |
|
| 49 |
ini_set('display_errors', 0 ); |
| 50 |
} |
| 51 |
|
| 52 |
// ===================================================================== 2023-06-07 |
| 53 |
// Recursively delete all files and directories. Used to delete |
| 54 |
// extracted ZIP files (plugins and themes) in the cache folder |
| 55 |
// after file integrity check: |
| 56 |
|
| 57 |
function nscan_remove_dir( $dir ) { |
| 58 |
|
| 59 |
// Play safe: make sure that whatever we delete, |
| 60 |
// it's located inside our cache folder: |
| 61 |
$dir = realpath( $dir ); |
| 62 |
if ( strpos( $dir, NSCAN_CACHEDIR ) === false ) { |
| 63 |
nscan_log_error( sprintf( |
| 64 |
__('Directory path does not match NSCAN_CACHEDIR: %s', |
| 65 |
'ninjascanner'), |
| 66 |
$dir |
| 67 |
)); |
| 68 |
} |
| 69 |
|
| 70 |
if ( is_dir( $dir ) ) { |
| 71 |
$files = scandir( $dir ); |
| 72 |
foreach ( $files as $file ) { |
| 73 |
if ( $file == '.' || $file == '..') { |
| 74 |
continue; |
| 75 |
} |
| 76 |
if ( is_dir("$dir/$file" ) ) { |
| 77 |
nscan_remove_dir( "$dir/$file"); |
| 78 |
} else { |
| 79 |
unlink("$dir/$file"); |
| 80 |
} |
| 81 |
} |
| 82 |
rmdir( $dir ); |
| 83 |
} |
| 84 |
} |
| 85 |
|
| 86 |
// ===================================================================== 2023-06-07 |
| 87 |
// Read file content from the ZIP file. |
| 88 |
|
| 89 |
function nscan_read_zipped_file( $zip, $file ) { |
| 90 |
|
| 91 |
// By default we use ZipArchive, but if it's not available, |
| 92 |
// we fall back to the built-in PclZip library: |
| 93 |
if ( class_exists('ZipArchive') ) { |
| 94 |
return file_get_contents("zip://{$zip}#{$file}"); |
| 95 |
|
| 96 |
} else { |
| 97 |
// PclZip |
| 98 |
require_once ABSPATH .'wp-admin/includes/class-pclzip.php'; |
| 99 |
$extract = new PclZip( $zip ); |
| 100 |
if ( $extract->extract( NSCAN_CACHEDIR .'/tmp') !== 0 ) { |
| 101 |
$content = file_get_contents( NSCAN_CACHEDIR ."/tmp/$file"); |
| 102 |
nscan_remove_dir( NSCAN_CACHEDIR .'/tmp'); |
| 103 |
return $content; |
| 104 |
} |
| 105 |
} |
| 106 |
} |
| 107 |
// ===================================================================== |
| 108 |
// Retrieve the current scan's status |
| 109 |
// (error|success|notfound|cancelled|stopped). |
| 110 |
|
| 111 |
function nscan_get_lock_status() { |
| 112 |
|
| 113 |
global $nscan_steps; |
| 114 |
|
| 115 |
$lock_status = array( |
| 116 |
'current_step' => 0, |
| 117 |
'status' => 'error', |
| 118 |
'message' => __('Unknown error.', 'ninjascanner'), |
| 119 |
'last' => '', |
| 120 |
'total_steps' => count( $nscan_steps ) |
| 121 |
); |
| 122 |
|
| 123 |
if ( file_exists( NSCAN_CANCEL ) ) { |
| 124 |
$lock_status['message'] = __('Scan was cancelled.', 'ninjascanner'); |
| 125 |
$lock_status['status'] = 'cancelled'; |
| 126 |
} |
| 127 |
|
| 128 |
if (! file_exists( NSCAN_LOCKFILE ) ) { |
| 129 |
$lock_status['message'] = __('Missing lock file.', 'ninjascanner'); |
| 130 |
$lock_status['status'] = 'notfound'; |
| 131 |
return $lock_status; |
| 132 |
} |
| 133 |
|
| 134 |
$status = json_decode( file_get_contents( NSCAN_LOCKFILE ), true ); |
| 135 |
|
| 136 |
if (! empty( $status['current_step'] ) ) { |
| 137 |
$lock_status['current_step'] = (int) $status['current_step']; |
| 138 |
} |
| 139 |
if (! empty( $status['status'] ) ) { |
| 140 |
$lock_status['status'] = $status['status']; |
| 141 |
} |
| 142 |
if (! empty( $status['message'] ) ) { |
| 143 |
$lock_status['message'] = $status['message']; |
| 144 |
} |
| 145 |
if (! empty( $status['last'] ) ) { |
| 146 |
$lock_status['last'] = $status['last']; |
| 147 |
} |
| 148 |
|
| 149 |
return $lock_status; |
| 150 |
} |
| 151 |
|
| 152 |
// ===================================================================== 2023-06-07 |
| 153 |
// Set the current scan's status |
| 154 |
// (error|success|notfound|cancelled|stopped). |
| 155 |
|
| 156 |
function nscan_set_lock_status( $step, $status, $message, $last = '') { |
| 157 |
|
| 158 |
global $nscan_steps; |
| 159 |
|
| 160 |
$lock_status = array( |
| 161 |
'current_step' => $step, |
| 162 |
'status' => $status, |
| 163 |
'message' => $message, |
| 164 |
'last' => $last, |
| 165 |
'total_steps' => count( $nscan_steps ) |
| 166 |
); |
| 167 |
|
| 168 |
file_put_contents( NSCAN_LOCKFILE, json_encode( $lock_status ) ); |
| 169 |
} |
| 170 |
|
| 171 |
// ===================================================================== 2023-06-07 |
| 172 |
// Stop the scanning process. |
| 173 |
|
| 174 |
function nscan_stop_scan() { |
| 175 |
|
| 176 |
nscan_cleanup_tempfiles(); |
| 177 |
|
| 178 |
exit( json_encode( ['status' => 'success'] ) ); |
| 179 |
} |
| 180 |
|
| 181 |
// ===================================================================== 2023-06-07 |
| 182 |
// Cancel a running scan. |
| 183 |
|
| 184 |
function nscan_cancel_scan() { |
| 185 |
|
| 186 |
if ( empty( $_POST['message'] ) ) { |
| 187 |
$_POST['message'] = ''; |
| 188 |
} |
| 189 |
nscan_log_info( |
| 190 |
sprintf( |
| 191 |
__('Cancelling scanning process (%s)', 'ninjascanner'), |
| 192 |
$_POST['message'] |
| 193 |
), false |
| 194 |
); |
| 195 |
|
| 196 |
touch( NSCAN_CANCEL ); |
| 197 |
if ( file_exists( NSCAN_LOCKFILE ) ) { |
| 198 |
unlink( NSCAN_LOCKFILE ); |
| 199 |
} |
| 200 |
|
| 201 |
wp_send_json( [ |
| 202 |
'status' => 'success', |
| 203 |
'message' => __('Scan cancelled', 'ninjascanner') |
| 204 |
] ); |
| 205 |
} |
| 206 |
|
| 207 |
// ===================================================================== 2023-06-07 |
| 208 |
// Check if a scan is running. |
| 209 |
|
| 210 |
function nscan_is_scan_running() { |
| 211 |
|
| 212 |
return json_encode( nscan_get_lock_status() ); |
| 213 |
} |
| 214 |
|
| 215 |
// ===================================================================== 2023-06-07 |
| 216 |
// Check if a scan process was cancelled. |
| 217 |
|
| 218 |
function nscan_is_scan_cancelled() { |
| 219 |
|
| 220 |
if ( file_exists( NSCAN_CANCEL ) ) { |
| 221 |
nscan_log_error( __('Scan was cancelled.', 'ninjascanner') ); |
| 222 |
exit; |
| 223 |
} |
| 224 |
} |
| 225 |
|
| 226 |
// ===================================================================== 2023-06-07 |
| 227 |
// Write message to the log. Log level can be a combination of INFO (1), |
| 228 |
// WARN (2), ERROR (4) and DEBUG (8) and can be adjusted while viewing |
| 229 |
// the log. Check also if the scanning process was cancelled (missing |
| 230 |
// lock file) and exit. |
| 231 |
|
| 232 |
function nscan_log( $string, $level = 1, $exit = true ) { |
| 233 |
|
| 234 |
if ( $exit == true ) { |
| 235 |
$lock_status = nscan_get_lock_status(); |
| 236 |
if ( in_array( $lock_status['status'], ['notfound', 'cancelled'] ) ) { |
| 237 |
file_put_contents( |
| 238 |
NSCAN_DEBUGLOG, |
| 239 |
time() . "~~8~~{$lock_status['message']}\n", |
| 240 |
FILE_APPEND |
| 241 |
); |
| 242 |
nscan_stop_scan(); |
| 243 |
} |
| 244 |
} |
| 245 |
file_put_contents( |
| 246 |
NSCAN_DEBUGLOG, |
| 247 |
time() ."~~$level~~$string\n", |
| 248 |
FILE_APPEND |
| 249 |
); |
| 250 |
} |
| 251 |
|
| 252 |
function nscan_log_info( $string, $exit = true ) { |
| 253 |
nscan_log( $string, 1, $exit ); |
| 254 |
} |
| 255 |
function nscan_log_warn( $string, $exit = true ) { |
| 256 |
nscan_log( $string, 2, $exit ); |
| 257 |
} |
| 258 |
function nscan_log_error( $string, $exit = true ) { |
| 259 |
nscan_log( $string, 4, $exit ); |
| 260 |
} |
| 261 |
function nscan_log_debug( $string, $exit = true ) { |
| 262 |
nscan_log( $string, 8, $exit ); |
| 263 |
} |
| 264 |
|
| 265 |
// ===================================================================== |
| 266 |
// Generate a nonce key. |
| 267 |
|
| 268 |
function nscan_generate_key() { |
| 269 |
|
| 270 |
$key = bin2hex( random_bytes(40) ); |
| 271 |
set_transient( |
| 272 |
'nscan_ajax_start', |
| 273 |
hash('sha256', $key ), |
| 274 |
60 * NSCAN_KEYTIMEOUT |
| 275 |
); |
| 276 |
return $key; |
| 277 |
} |
| 278 |
|
| 279 |
// ===================================================================== 2023-06-07 |
| 280 |
// Verify nonce for on-demand scan. |
| 281 |
|
| 282 |
function nscan_check_nonce() { |
| 283 |
|
| 284 |
if ( empty( $_POST['nscan_key'] ) || |
| 285 |
! wp_verify_nonce( $_POST['nscan_key'], 'nscan_on_demand_nonce') ) { |
| 286 |
|
| 287 |
$return['status'] = 'error'; |
| 288 |
$return['message'] = __('Security nonces do not match.', 'ninjascanner'); |
| 289 |
nscan_log_error( $return['message'], false ); |
| 290 |
nscan_set_lock_status( |
| 291 |
1, |
| 292 |
$return['status'], |
| 293 |
$return['message'], |
| 294 |
null |
| 295 |
); |
| 296 |
wp_send_json( $return ); |
| 297 |
} |
| 298 |
} |
| 299 |
// ===================================================================== |
| 300 |
// Make sure we have a Linux or Windows absolute path. |
| 301 |
|
| 302 |
function ns_win_or_linux( $file ) { |
| 303 |
|
| 304 |
if (! preg_match('`^(?i:[a-z]:|/)`', $file ) || preg_match( '`\.\.\B`', $file ) ) { |
| 305 |
wp_die( sprintf( |
| 306 |
esc_html__('File does not seem valid: %s', 'ninjascanner'), |
| 307 |
esc_html( $file ) |
| 308 |
) ); |
| 309 |
} |
| 310 |
} |
| 311 |
|
| 312 |
// ===================================================================== |
| 313 |
// Ensure $file is a readable/writable file under the WordPress install. |
| 314 |
|
| 315 |
function nscan_validate_file_path( $file, $must_exist = true ) { |
| 316 |
|
| 317 |
$file = wp_normalize_path( $file ); |
| 318 |
ns_win_or_linux( $file ); |
| 319 |
$real = realpath( $file ); |
| 320 |
if ( $real === false ) { |
| 321 |
if ( $must_exist ) { |
| 322 |
wp_die( esc_html__('File does not exist.', 'ninjascanner') ); |
| 323 |
} |
| 324 |
return false; |
| 325 |
} |
| 326 |
$roots = array_filter( [ |
| 327 |
realpath( ABSPATH ), |
| 328 |
! empty( $_SERVER['DOCUMENT_ROOT'] ) ? realpath( $_SERVER['DOCUMENT_ROOT'] ) : null, |
| 329 |
] ); |
| 330 |
$allowed = false; |
| 331 |
foreach ( $roots as $root ) { |
| 332 |
if ( strpos( $real, trailingslashit( $root ) ) === 0 || $real === $root ) { |
| 333 |
$allowed = true; |
| 334 |
break; |
| 335 |
} |
| 336 |
} |
| 337 |
if ( ! $allowed ) { |
| 338 |
wp_die( esc_html__('File is outside the allowed site directories.', 'ninjascanner') ); |
| 339 |
} |
| 340 |
return $real; |
| 341 |
} |
| 342 |
|
| 343 |
// ===================================================================== |
| 344 |
// Verify the security key. |
| 345 |
|
| 346 |
function nscan_check_key() { |
| 347 |
|
| 348 |
$success = array( |
| 349 |
'status' => 'success', |
| 350 |
'message' => __('Keys match.', 'ninjascanner') |
| 351 |
); |
| 352 |
$error = array( |
| 353 |
'status' => 'error' |
| 354 |
); |
| 355 |
$error_msg = __('Security keys do not match (#%s). Try to reload this page.', 'ninjascanner'); |
| 356 |
|
| 357 |
if ( empty( $_POST['nscan_key'] ) ) { |
| 358 |
$error['message'] = sprintf( $error_msg, 1 ); |
| 359 |
return $error; |
| 360 |
} |
| 361 |
|
| 362 |
$key = get_transient( 'nscan_ajax_start' ); |
| 363 |
if ( $key === false ) { |
| 364 |
$error['message'] = sprintf( $error_msg, 2 ); |
| 365 |
return $error; |
| 366 |
} |
| 367 |
|
| 368 |
if ( hash( 'sha256', $_POST['nscan_key'] ) !== $key ) { |
| 369 |
delete_transient( 'nscan_ajax_start' ); |
| 370 |
$error['message'] = sprintf( $error_msg, 3 ); |
| 371 |
return $error; |
| 372 |
} |
| 373 |
|
| 374 |
return $success; |
| 375 |
} |
| 376 |
|
| 377 |
// ===================================================================== |
| 378 |
// Get the blog timezone. |
| 379 |
|
| 380 |
function nscan_get_blogtimezone() { |
| 381 |
|
| 382 |
$tzstring = get_option( 'timezone_string' ); |
| 383 |
if (! $tzstring ) { |
| 384 |
$tzstring = ini_get( 'date.timezone' ); |
| 385 |
if (! $tzstring ) { |
| 386 |
$tzstring = 'UTC'; |
| 387 |
} |
| 388 |
} |
| 389 |
date_default_timezone_set( $tzstring ); |
| 390 |
} |
| 391 |
|
| 392 |
// ===================================================================== |
| 393 |
|
| 394 |
function nscan_is_valid() { |
| 395 |
|
| 396 |
$nscan_options = get_option( 'nscan_options' ); |
| 397 |
nscan_get_blogtimezone(); |
| 398 |
if ( empty( $nscan_options['key'] ) ) { return -1; } |
| 399 |
if (! empty( $nscan_options['exp'] ) && preg_match('/^\d{4}-\d{2}-\d{2}$/', $nscan_options['exp'] ) ) { |
| 400 |
if ( $nscan_options['exp'] < date( 'Y-m-d', strtotime( '-1 day' ) ) ) { |
| 401 |
return -1; |
| 402 |
} elseif ( $nscan_options['exp'] < date( 'Y-m-d', strtotime( '+30 day' ) ) ) { |
| 403 |
return 30; |
| 404 |
} |
| 405 |
return 1; |
| 406 |
} |
| 407 |
return 0; |
| 408 |
} |
| 409 |
|
| 410 |
// ===================================================================== |
| 411 |
|
| 412 |
function nscan_check_license( $nscan_options, $key = '' ) { |
| 413 |
|
| 414 |
if ( is_multisite() ) { |
| 415 |
$site_url = rtrim( strtolower( network_site_url('','http') ), '/' ); |
| 416 |
} else { |
| 417 |
$site_url = rtrim( strtolower(site_url('','http') ), '/' ); |
| 418 |
} |
| 419 |
|
| 420 |
global $wp_version; |
| 421 |
$opt_update = 0; |
| 422 |
$res = array(); |
| 423 |
|
| 424 |
if ( empty( $key ) && ! empty( $nscan_options['key'] ) ) { |
| 425 |
$key = $nscan_options['key']; |
| 426 |
} |
| 427 |
|
| 428 |
if ( empty( $key ) ) { |
| 429 |
$res['nscan_err'] = __('Error: You do not have a Premium license.', 'ninjascanner'); |
| 430 |
return $res; |
| 431 |
} |
| 432 |
|
| 433 |
$request_string = array( |
| 434 |
'body' => array( |
| 435 |
'action' => 'check_license', |
| 436 |
'key' => $key, |
| 437 |
'cache_id' => sha1( home_url() ), |
| 438 |
'host' => @strtolower( $_SERVER['HTTP_HOST'] ) |
| 439 |
), |
| 440 |
'user-agent' => 'Mozilla/5.0 (compatible; NinjaScanner/'. NSCAN_VERSION ."; WordPress/{$wp_version})", |
| 441 |
'timeout' => NSCAN_CURL_TIMEOUT, |
| 442 |
'httpversion' => '1.1' , |
| 443 |
'sslverify' => true |
| 444 |
); |
| 445 |
// POST the request: |
| 446 |
$res = wp_remote_post( NSCAN_SIGNATURES_URL, $request_string ); |
| 447 |
|
| 448 |
if (! is_wp_error($res) ) { |
| 449 |
|
| 450 |
if ( $res['response']['code'] == 200 ) { |
| 451 |
|
| 452 |
// Fetch the array: |
| 453 |
$data = json_decode( $res['body'], true ); |
| 454 |
// Verify its content: |
| 455 |
if ( empty( $data['checked'] ) ) { |
| 456 |
$res['nscan_err'] = __('An unknown error occurred while connecting to NinjaScanner API server. Please try again in a few minutes.', 'ninjascanner'); |
| 457 |
return $res; |
| 458 |
} |
| 459 |
if (! empty( $data['exp'] ) ) { |
| 460 |
$nscan_options['exp'] = $data['exp']; |
| 461 |
$res['nscan_exp'] = $data['exp']; |
| 462 |
update_option( 'nscan_options', $nscan_options ); |
| 463 |
} |
| 464 |
|
| 465 |
if (! empty( $data['err'] ) ) { |
| 466 |
$res['nscan_err'] = sprintf( |
| 467 |
__('Error: Your license is not valid (#%s).', 'ninjascanner'), |
| 468 |
(int)$data['err'] |
| 469 |
); |
| 470 |
return $res; |
| 471 |
} |
| 472 |
|
| 473 |
$res['nscan_msg'] = __('You have a valid license', 'ninjascanner'); |
| 474 |
return $res; |
| 475 |
|
| 476 |
} else { |
| 477 |
// HTTP error: |
| 478 |
$res['nscan_err'] = sprintf( |
| 479 |
__('HTTP Error (%s): Cannot connect to the API server. Try again later', 'ninjascanner'), |
| 480 |
(int)$res['response']['code'] |
| 481 |
); |
| 482 |
return $res; |
| 483 |
} |
| 484 |
} else { |
| 485 |
// Unknown error: |
| 486 |
$res['nscan_err'] = __('Error: Cannot connect to the API server. Try again later', 'ninjascanner'); |
| 487 |
return $res; |
| 488 |
} |
| 489 |
} |
| 490 |
|
| 491 |
// ===================================================================== |
| 492 |
|
| 493 |
function nscan_save_license( $nscan_options ) { |
| 494 |
|
| 495 |
$res = array(); |
| 496 |
$key = trim( $_POST['key'] ); |
| 497 |
$res = nscan_check_license( $nscan_options, $key ); |
| 498 |
if ( empty( $res['nscan_err'] ) ) { |
| 499 |
$nscan_options['key'] = $key; |
| 500 |
$nscan_options['exp'] = $res['nscan_exp']; |
| 501 |
update_option( 'nscan_options', $nscan_options ); |
| 502 |
$res['nscan_msg'] = __('Your license has been accepted and saved.', 'ninjascanner'); |
| 503 |
} |
| 504 |
return $res; |
| 505 |
|
| 506 |
} |
| 507 |
// ===================================================================== |
| 508 |
// Send an email to the admin if there were an error. |
| 509 |
|
| 510 |
function nscan_error_email( $error ) { |
| 511 |
|
| 512 |
$nscan_options = get_option( 'nscan_options' ); |
| 513 |
if ( empty( $nscan_options['admin_email'] ) ) { |
| 514 |
return; |
| 515 |
} |
| 516 |
|
| 517 |
$message = sprintf( |
| 518 |
__('Cannot start the scan! More details may be available in the scanner log: %s', 'ninjascanner', |
| 519 |
$error |
| 520 |
) ); |
| 521 |
|
| 522 |
if ( is_multisite() ) { |
| 523 |
$blog = network_home_url('/'); |
| 524 |
} else { |
| 525 |
$blog = home_url('/'); |
| 526 |
} |
| 527 |
$subject = __('[NinjaScanner] Scan error', 'ninjascanner'); |
| 528 |
$message = sprintf( __('A fatal error occurred while running NinjaScanner: %s.', 'ninjascanner'), $error ); |
| 529 |
$message .= "\n\n". __('More details may be available in the scanner log.', 'ninjascanner' ) ."\n"; |
| 530 |
$signature = "\nNinjaScanner - https://nintechnet.com/\n" . |
| 531 |
__('Help Desk (Premium customers only):', 'ninjascanner') . " https://secure.nintechnet.com/login/\n"; |
| 532 |
wp_mail( $nscan_options['admin_email'], $subject, $message . $signature ); |
| 533 |
|
| 534 |
} |
| 535 |
|
| 536 |
|
| 537 |
// ===================================================================== |
| 538 |
// EOF |
| 539 |
|
