share
9 years ago
.htaccess
11 years ago
anti_malware.php
5 years ago
class-api.php
4 weeks ago
class-centralised-logging.php
4 weeks ago
class-coupon.php
7 months ago
class-email-sodium.php
4 weeks ago
class-firewall-log.php
4 weeks ago
class-helpers.php
9 months ago
class-import-export.php
5 months ago
class-ip.php
5 months ago
class-nfw-database.php
7 months ago
class-plugin-upgrade.php
4 weeks ago
class-security-updates.php
4 weeks ago
class-session.php
4 weeks ago
class_mail.php
4 weeks ago
firewall.php
4 weeks ago
fw_fileguard.php
5 months ago
fw_livelog.php
1 year ago
help.php
4 weeks ago
helpers.php
4 weeks ago
i18n-extra.php
4 weeks ago
i18n.php
1 year ago
index.html
13 years ago
init_update.php
2 years ago
install.php
1 year ago
install_default.php
4 weeks ago
loader.php
7 months ago
mail_template_firewall.php
1 year ago
mail_template_plugin.php
4 weeks ago
scheduled_tasks.php
3 years ago
settings_dashboard.php
4 weeks ago
settings_dashboard_about.php
4 weeks ago
settings_dashboard_statistics.php
2 months ago
settings_event_notifications.php
4 weeks ago
settings_events.php
2 months ago
settings_firewall_options.php
2 months ago
settings_firewall_policies.php
4 weeks ago
settings_login_protection.php
2 months ago
settings_logs.php
4 weeks ago
settings_logs_firewall_log.php
4 weeks ago
settings_logs_live_log.php
2 months ago
settings_monitoring.php
4 weeks ago
settings_monitoring_file_check.php
2 months ago
settings_monitoring_file_guard.php
2 months ago
settings_network.php
2 months ago
settings_security_rules.php
2 months ago
settings_security_rules_editor.php
4 weeks ago
settings_security_rules_update.php
4 weeks ago
sign.pub
7 years ago
thickbox.php
4 years ago
widget.php
3 years ago
wpplus.php
5 months ago
firewall.php
2109 lines
| 1 | <?php |
| 2 | /* |
| 3 | +=====================================================================+ |
| 4 | | _ _ _ _ _____ _ _ _ | |
| 5 | | | \ | (_)_ __ (_) __ _| ___(_)_ __ _____ ____ _| | | | |
| 6 | | | \| | | '_ \ | |/ _` | |_ | | '__/ _ \ \ /\ / / _` | | | | |
| 7 | | | |\ | | | | || | (_| | _| | | | | __/\ V V / (_| | | | | |
| 8 | | |_| \_|_|_| |_|/ |\__,_|_| |_|_| \___| \_/\_/ \__,_|_|_| | |
| 9 | | |__/ | |
| 10 | | (c) NinTechNet Limited ~ https://nintechnet.com/ | |
| 11 | +=====================================================================+ |
| 12 | */ |
| 13 | if ( strpos($_SERVER['SCRIPT_NAME'], '/nfwlog/') !== FALSE || |
| 14 | strpos($_SERVER['SCRIPT_NAME'], '/ninjafirewall/') !== FALSE ) { |
| 15 | die('Forbidden'); |
| 16 | } |
| 17 | if ( defined('NFW_STATUS') ) { return; } |
| 18 | if ( defined('WP_CLI') && WP_CLI && PHP_SAPI === 'cli' ) { |
| 19 | if (! defined('NFW_UWL') ) { |
| 20 | define('NFW_UWL', true); |
| 21 | } |
| 22 | return; |
| 23 | } |
| 24 | |
| 25 | $nfw_ = []; |
| 26 | $nfw_['fw_starttime'] = nfw_fc_metrics('start'); |
| 27 | |
| 28 | /** |
| 29 | * Required classes and constants. |
| 30 | */ |
| 31 | if ( ! defined('NFWLOG_DEBUG') ) { |
| 32 | define('NFWLOG_MEDIUM', 1); |
| 33 | define('NFWLOG_HIGH', 2); |
| 34 | define('NFWLOG_CRITICAL', 3); |
| 35 | define('NFWLOG_POSTDETECT', 4); |
| 36 | define('NFWLOG_UPLOAD', 5); |
| 37 | define('NFWLOG_INFO', 6); |
| 38 | define('NFWLOG_DEBUG', 7); |
| 39 | } |
| 40 | require_once __DIR__ .'/class-ip.php'; |
| 41 | require_once __DIR__ .'/class-firewall-log.php'; |
| 42 | |
| 43 | /** |
| 44 | * Optional NinjaFirewall configuration file. |
| 45 | * See https://blog.nintechnet.com/ninjafirewall-wp-edition-the-htninja-configuration-file/ |
| 46 | */ |
| 47 | if ( @is_file( $nfw_['file'] = $_SERVER['DOCUMENT_ROOT'] .'/.htninja') || |
| 48 | @is_file( $nfw_['file'] = dirname( $_SERVER['DOCUMENT_ROOT'] ) .'/.htninja') ) { |
| 49 | |
| 50 | $nfw_['res'] = @include_once $nfw_['file']; |
| 51 | /** |
| 52 | * Allow and stop filtering. |
| 53 | */ |
| 54 | if ( $nfw_['res'] == 'ALLOW') { |
| 55 | if (! defined('NFW_UWL') ) { |
| 56 | define('NFW_UWL', true ); |
| 57 | } |
| 58 | nfw_quit( 20 ); |
| 59 | return; |
| 60 | } |
| 61 | /** |
| 62 | * Reject immediately. |
| 63 | */ |
| 64 | if ( $nfw_['res'] == 'BLOCK') { |
| 65 | header('HTTP/1.1 403 Forbidden'); |
| 66 | header('Status: 403 Forbidden'); |
| 67 | header('Pragma: no-cache'); |
| 68 | header('Cache-Control: no-cache, no-store, must-revalidate'); |
| 69 | header('Expires: 0'); |
| 70 | die('403 Forbidden'); |
| 71 | } |
| 72 | } |
| 73 | // Clear warning if there's an open_basedir restriction |
| 74 | if ( function_exists('error_clear_last') ) { // PHP 7.0+ |
| 75 | error_clear_last(); |
| 76 | } |
| 77 | |
| 78 | $nfw_['wp_content'] = dirname(dirname(dirname( __DIR__ ))); |
| 79 | // Check if we have a user-defined log directory |
| 80 | // (see "Path to NinjaFirewall's log and cache directory" |
| 81 | // at https://blog.nintechnet.com/ninjafirewall-wp-edition-the-htninja-configuration-file/ ) : |
| 82 | if ( defined('NFW_LOG_DIR') ) { |
| 83 | $nfw_['log_dir'] = NFW_LOG_DIR . '/nfwlog'; |
| 84 | } else { |
| 85 | $nfw_['log_dir'] = $nfw_['wp_content'] . '/nfwlog'; |
| 86 | } |
| 87 | if (! is_dir($nfw_['log_dir']) ) { |
| 88 | if (! mkdir( $nfw_['log_dir'] . '/cache', 0755, true) ) { |
| 89 | define( 'NFW_STATUS', 13 ); |
| 90 | return; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Start a session. |
| 96 | */ |
| 97 | if (! defined('NFWSESSION_DIR') ) { |
| 98 | /** |
| 99 | * NFWSESSION_DIR can be defined in the .htninja. |
| 100 | */ |
| 101 | define('NFWSESSION_DIR', "{$nfw_['log_dir']}/session" ); |
| 102 | } |
| 103 | require_once __DIR__ .'/class-session.php'; |
| 104 | |
| 105 | |
| 106 | // Get/set PID |
| 107 | if ( is_file( "{$nfw_['log_dir']}/cache/.pid" ) ) { |
| 108 | define( 'NFW_PID', file_get_contents( "{$nfw_['log_dir']}/cache/.pid" ) ); |
| 109 | } |
| 110 | |
| 111 | // Check if we are connecting over HTTPS |
| 112 | nfw_is_https(); |
| 113 | |
| 114 | if ( strpos($_SERVER['SCRIPT_NAME'], 'wp-login.php' ) !== FALSE ) { |
| 115 | nfw_bfd(1); |
| 116 | } elseif ( strpos($_SERVER['SCRIPT_NAME'], 'xmlrpc.php' ) !== FALSE ) { |
| 117 | nfw_bfd(2); |
| 118 | } |
| 119 | |
| 120 | if (empty ($wp_config)) { |
| 121 | $wp_config = dirname($nfw_['wp_content']) . '/wp-config.php'; |
| 122 | } |
| 123 | |
| 124 | // Connection |
| 125 | $ret = nfw_connect(); |
| 126 | if ( $ret !== true ) { |
| 127 | nfw_quit( $ret ); |
| 128 | return; |
| 129 | } |
| 130 | |
| 131 | // Fetch options |
| 132 | $ret = nfw_get_data( 'nfw_options' ); |
| 133 | if ( $ret !== true || empty( $nfw_['nfw_options'] ) ) { |
| 134 | nfw_quit( $ret ); |
| 135 | return; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Verify and retrieve the user IP address. |
| 140 | */ |
| 141 | NinjaFirewall_IP::check_ip( ['ac_ip' => 1 ] ); |
| 142 | |
| 143 | /** |
| 144 | * Centralized logging. |
| 145 | */ |
| 146 | if (! empty($nfw_['nfw_options']['clogs_pubkey']) && isset($_POST['clogs_req']) ) { |
| 147 | include_once __DIR__ .'/class-centralised-logging.php'; |
| 148 | NinjaFirewall_centralisedlogging::run( $nfw_ ); |
| 149 | exit; |
| 150 | } |
| 151 | |
| 152 | if ( empty($nfw_['nfw_options']['enabled']) ) { |
| 153 | nfw_quit( 20 ); |
| 154 | return; |
| 155 | } |
| 156 | |
| 157 | // HTTP response headers |
| 158 | if ( (! empty( $nfw_['nfw_options']['response_headers'] ) || ! empty($nfw_['nfw_options']['custom_headers']) ) |
| 159 | && function_exists('header_register_callback') ) { |
| 160 | |
| 161 | if (! empty( $nfw_['nfw_options']['response_headers'] ) ) { |
| 162 | define('NFW_RESHEADERS', $nfw_['nfw_options']['response_headers']); |
| 163 | if (! empty( $nfw_['nfw_options']['response_headers'][6] ) && ! empty( $nfw_['nfw_options']['csp_frontend_data'] ) ) { |
| 164 | define( 'CSP_FRONTEND_DATA', $nfw_['nfw_options']['csp_frontend_data']); |
| 165 | } |
| 166 | if (! empty( $nfw_['nfw_options']['response_headers'][7] ) && ! empty( $nfw_['nfw_options']['csp_backend_data'] ) ) { |
| 167 | define( 'CSP_BACKEND_DATA', $nfw_['nfw_options']['csp_backend_data'] ); |
| 168 | } |
| 169 | } |
| 170 | if (! empty( $nfw_['nfw_options']['custom_headers'] ) ) { |
| 171 | define('NFW_CUSTHEADERS', $nfw_['nfw_options']['custom_headers']); |
| 172 | } |
| 173 | header_register_callback('nfw_response_headers'); |
| 174 | } |
| 175 | |
| 176 | if (! empty($nfw_['nfw_options']['force_ssl']) ) { |
| 177 | define('FORCE_SSL_ADMIN', true); |
| 178 | } |
| 179 | if (! empty($nfw_['nfw_options']['disallow_edit']) ) { |
| 180 | define('DISALLOW_FILE_EDIT', true); |
| 181 | } |
| 182 | if (! empty($nfw_['nfw_options']['disallow_mods']) ) { |
| 183 | define('DISALLOW_FILE_MODS', true); |
| 184 | } |
| 185 | if (! empty($nfw_['nfw_options']['disable_error_handler']) ) { |
| 186 | define('WP_DISABLE_FATAL_ERROR_HANDLER', true); |
| 187 | } |
| 188 | |
| 189 | // Superglobals override |
| 190 | if (! empty($nfw_['nfw_options']['php_superglobals']) ) { |
| 191 | $sgs = [ |
| 192 | '_GET', '_POST', '_SESSION', '_COOKIE', |
| 193 | '_SERVER', '_FILES', '_ENV', '_REQUEST', 'GLOBALS' |
| 194 | ]; |
| 195 | foreach( $sgs as $sg ) { |
| 196 | if ( isset( $_GET[$sg] ) ) { |
| 197 | |
| 198 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 199 | 'Superglobals override attempt', |
| 200 | "\$_GET[$sg]: ". serialize( $_GET[$sg] ), |
| 201 | NFWLOG_INFO, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 202 | ); |
| 203 | unset( $_GET[$sg] ); |
| 204 | } |
| 205 | if ( isset( $_POST[$sg] ) ) { |
| 206 | |
| 207 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 208 | 'Superglobals override attempt', |
| 209 | "\$_POST[$sg]: ". serialize( $_POST[$sg] ), |
| 210 | NFWLOG_INFO, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 211 | ); |
| 212 | unset( $_POST[$sg] ); |
| 213 | } |
| 214 | if ( isset( $_COOKIE[$sg] ) ) { |
| 215 | |
| 216 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 217 | 'Superglobals override attempt', |
| 218 | "\$_COOKIE[$sg]: ". serialize( $_COOKIE[$sg] ), |
| 219 | NFWLOG_INFO, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 220 | ); |
| 221 | unset( $_COOKIE[$sg] ); |
| 222 | } |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | // We only start a session if users already have a session |
| 227 | // cookie because we don't need write access yet |
| 228 | $session_name = NinjaFirewall_session::name(); |
| 229 | if ( isset( $_COOKIE[ $session_name ] ) ) { |
| 230 | NinjaFirewall_session::start(); |
| 231 | } |
| 232 | |
| 233 | if (! empty( NinjaFirewall_session::read('nfw_goodguy') ) ) { |
| 234 | // Look for Live Log AJAX request |
| 235 | if (! empty( NinjaFirewall_session::read('nfw_livelog') ) && |
| 236 | isset( $_POST['livecls'] ) && isset( $_POST['lines'] ) ) { |
| 237 | |
| 238 | include_once 'fw_livelog.php'; |
| 239 | fw_livelog_show(); |
| 240 | } |
| 241 | |
| 242 | // Fetch admin rules |
| 243 | $ret = nfw_get_data( 'nfw_rules' ); |
| 244 | if ( $ret !== true ) { |
| 245 | nfw_quit( $ret ); |
| 246 | return; |
| 247 | } |
| 248 | nfw_check_admin_request(); |
| 249 | |
| 250 | nfw_quit( 20 ); |
| 251 | return; |
| 252 | } |
| 253 | define('NFW_SWL', 1); |
| 254 | |
| 255 | if ( is_file($nfw_['log_dir'] .'/cache/livelogrun.php')) { |
| 256 | include_once 'fw_livelog.php'; |
| 257 | fw_livelog_record(); |
| 258 | } |
| 259 | |
| 260 | if (! empty($nfw_['nfw_options']['php_errors']) ) { |
| 261 | @error_reporting(0); |
| 262 | @ini_set('display_errors', 0); |
| 263 | } |
| 264 | |
| 265 | if ( empty($nfw_['nfw_options']['allow_local_ip']) && NFW_REMOTE_ADDR_PRIVATE == true ) { |
| 266 | nfw_quit(20); |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | if ( NFW_REMOTE_ADDR_PRIVATE == true && strpos( $_SERVER['SCRIPT_NAME'], '/wp-cron.php' ) !== FALSE ) { |
| 271 | nfw_quit(20); |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | if ( @$nfw_['nfw_options']['scan_protocol'] == 1 && NFW_IS_HTTPS == true ) { |
| 276 | nfw_quit(20); |
| 277 | return; |
| 278 | } |
| 279 | if ( @$nfw_['nfw_options']['scan_protocol'] == 2 && NFW_IS_HTTPS == false ) { |
| 280 | nfw_quit(20); |
| 281 | return; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * File Guard. |
| 286 | */ |
| 287 | if (! empty( $nfw_['nfw_options']['fg_enable'] ) ) { |
| 288 | include_once 'fw_fileguard.php'; |
| 289 | fw_fileguard(); |
| 290 | } |
| 291 | |
| 292 | if (! empty($nfw_['nfw_options']['no_host_ip']) && @filter_var(parse_url('http://'.$_SERVER['HTTP_HOST'], PHP_URL_HOST), FILTER_VALIDATE_IP) ) { |
| 293 | |
| 294 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 295 | 'HTTP_HOST is an IP', |
| 296 | $_SERVER['HTTP_HOST'], |
| 297 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 298 | ); |
| 299 | nfw_block(); |
| 300 | } |
| 301 | |
| 302 | if (! empty($nfw_['nfw_options']['referer_post']) && $_SERVER['REQUEST_METHOD'] == 'POST' && ! isset($_SERVER['HTTP_REFERER']) ) { |
| 303 | |
| 304 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 305 | 'POST method without Referer header', |
| 306 | $_SERVER['REQUEST_METHOD'], |
| 307 | NFWLOG_MEDIUM, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 308 | ); |
| 309 | nfw_block(); |
| 310 | } |
| 311 | |
| 312 | if (! empty($nfw_['nfw_options']['admin_ajax']) && strpos( $_SERVER['SCRIPT_NAME'], 'wp-admin/admin-ajax.php' ) !== FALSE ) { |
| 313 | nfw_is_bot( 'admin-ajax.php' ); |
| 314 | } |
| 315 | |
| 316 | if ( strpos($_SERVER['SCRIPT_NAME'], '/xmlrpc.php' ) !== FALSE ) { |
| 317 | if (! empty($nfw_['nfw_options']['no_xmlrpc']) ) { |
| 318 | |
| 319 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 320 | 'Access to WordPress XML-RPC API', |
| 321 | $_SERVER['SCRIPT_NAME'], |
| 322 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 323 | ); |
| 324 | nfw_block(); |
| 325 | } |
| 326 | if ( $_SERVER['REQUEST_METHOD'] == 'POST' ) { |
| 327 | if (! isset( $HTTP_RAW_POST_DATA ) ) { |
| 328 | @$HTTP_RAW_POST_DATA = file_get_contents( 'php://input' ); |
| 329 | } |
| 330 | |
| 331 | if (! empty($nfw_['nfw_options']['no_xmlrpc_multi']) ) { |
| 332 | |
| 333 | if ( @strpos( $HTTP_RAW_POST_DATA, '<methodName>system.multicall</methodName>') !== FALSE ) { |
| 334 | |
| 335 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 336 | 'Access to WordPress XML-RPC API (system.multicall method)', |
| 337 | $_SERVER['SCRIPT_NAME'], |
| 338 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 339 | ); |
| 340 | nfw_block(); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | if (! empty($nfw_['nfw_options']['no_xmlrpc_pingback']) ) { |
| 345 | |
| 346 | if ( @strpos( $HTTP_RAW_POST_DATA, '<methodName>pingback.ping</methodName>') !== FALSE ) { |
| 347 | |
| 348 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 349 | 'Access to WordPress XML-RPC API (pingback.ping)', |
| 350 | $_SERVER['SCRIPT_NAME'], |
| 351 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 352 | ); |
| 353 | nfw_block(); |
| 354 | } |
| 355 | } |
| 356 | } |
| 357 | } |
| 358 | if (! empty($nfw_['nfw_options']['no_xmlrpc_pingback']) && strpos($_SERVER['HTTP_USER_AGENT'], '; verifying pingback from ') !== FALSE) { |
| 359 | |
| 360 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 361 | 'Blocked pingback verification', |
| 362 | $_SERVER['HTTP_USER_AGENT'], |
| 363 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 364 | ); |
| 365 | nfw_block(); |
| 366 | } |
| 367 | |
| 368 | // WordPress Aplication Passwords |
| 369 | if (! empty($nfw_['nfw_options']['no_appswd']) && strpos( $_SERVER['SCRIPT_NAME'], '/wp-admin/authorize-application.php' ) !== FALSE ) { |
| 370 | |
| 371 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 372 | 'Access to WordPress Application Passwords', |
| 373 | $_SERVER['SCRIPT_NAME'], |
| 374 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 375 | ); |
| 376 | nfw_block(); |
| 377 | } |
| 378 | |
| 379 | if (! empty($nfw_['nfw_options']['no_post_themes']) && $_SERVER['REQUEST_METHOD'] == 'POST' && strpos($_SERVER['SCRIPT_NAME'], $nfw_['nfw_options']['no_post_themes']) !== FALSE ) { |
| 380 | |
| 381 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 382 | 'POST request in the themes folder', |
| 383 | $_SERVER['SCRIPT_NAME'], |
| 384 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 385 | ); |
| 386 | nfw_block(); |
| 387 | } |
| 388 | |
| 389 | if (! empty($nfw_['nfw_options']['wp_dir']) && preg_match( '`' . $nfw_['nfw_options']['wp_dir'] . '`', $_SERVER['SCRIPT_NAME']) ) { |
| 390 | |
| 391 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 392 | 'Forbidden direct access to PHP script', |
| 393 | $_SERVER['SCRIPT_NAME'], |
| 394 | NFWLOG_HIGH, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 395 | ); |
| 396 | nfw_block(); |
| 397 | } |
| 398 | |
| 399 | nfw_check_upload(); |
| 400 | |
| 401 | // Fetch rules |
| 402 | $ret = nfw_get_data( 'nfw_rules' ); |
| 403 | if ( $ret !== true ) { |
| 404 | nfw_quit( $ret ); |
| 405 | return; |
| 406 | } |
| 407 | |
| 408 | nfw_check_request( $nfw_['nfw_rules'], $nfw_['nfw_options'] ); |
| 409 | |
| 410 | if (! empty($nfw_['nfw_options']['get_sanitise']) && ! empty($_GET) ){ |
| 411 | $_GET = nfw_sanitise( $_GET, 1, 'GET'); |
| 412 | } |
| 413 | if (! empty($nfw_['nfw_options']['cookies_sanitise']) && ! empty($_COOKIE) ) { |
| 414 | $_COOKIE = nfw_sanitise( $_COOKIE, 3, 'COOKIE'); |
| 415 | } |
| 416 | if (! empty($nfw_['nfw_options']['ua_sanitise']) && ! empty($_SERVER['HTTP_USER_AGENT']) ) { |
| 417 | $_SERVER['HTTP_USER_AGENT'] = nfw_sanitise( $_SERVER['HTTP_USER_AGENT'], 1, 'HTTP_USER_AGENT'); |
| 418 | } |
| 419 | if (! empty($nfw_['nfw_options']['referer_sanitise']) && ! empty($_SERVER['HTTP_REFERER']) ) { |
| 420 | $_SERVER['HTTP_REFERER'] = nfw_sanitise( $_SERVER['HTTP_REFERER'], 1, 'HTTP_REFERER'); |
| 421 | } |
| 422 | if (! empty($nfw_['nfw_options']['php_path_i']) && ! empty($_SERVER['PATH_INFO']) ) { |
| 423 | $_SERVER['PATH_INFO'] = nfw_sanitise( $_SERVER['PATH_INFO'], 2, 'PATH_INFO'); |
| 424 | } |
| 425 | if (! empty($nfw_['nfw_options']['php_path_t']) && ! empty($_SERVER['PATH_TRANSLATED']) ) { |
| 426 | $_SERVER['PATH_TRANSLATED'] = nfw_sanitise( $_SERVER['PATH_TRANSLATED'], 2, 'PATH_TRANSLATED'); |
| 427 | } |
| 428 | if (! empty($nfw_['nfw_options']['php_self']) && ! empty($_SERVER['PHP_SELF']) ) { |
| 429 | $_SERVER['PHP_SELF'] = nfw_sanitise( $_SERVER['PHP_SELF'], 2, 'PHP_SELF'); |
| 430 | } |
| 431 | |
| 432 | nfw_quit(20); |
| 433 | return; |
| 434 | |
| 435 | // ===================================================================== |
| 436 | // Close the SQL link, set the firewall status, clear the $nfw_ array |
| 437 | // and close the session before leaving. |
| 438 | |
| 439 | function nfw_quit( $status ) { |
| 440 | |
| 441 | global $nfw_; |
| 442 | define( 'NFW_STATUS', $status ); |
| 443 | |
| 444 | if ( isset( $nfw_['mysqli'] ) ) { |
| 445 | $nfw_['mysqli']->close(); |
| 446 | } |
| 447 | $nfw_ = []; |
| 448 | } |
| 449 | |
| 450 | // ===================================================================== |
| 451 | // Connect to the DB. |
| 452 | |
| 453 | function nfw_connect() { |
| 454 | |
| 455 | global $nfw_, $wp_config; |
| 456 | |
| 457 | // WPWAF mode? |
| 458 | if ( defined('NFW_WPWAF') && NFW_WPWAF == 2 ) { |
| 459 | $nfw_['wp_waf'] = 2; |
| 460 | return true; |
| 461 | } |
| 462 | |
| 463 | // Check if we have a SQL link that was defined in the .htninja. |
| 464 | // See "Giving NinjaFirewall a MySQLi link identifier" |
| 465 | // at https://blog.nintechnet.com/ninjafirewall-wp-edition-the-htninja-configuration-file/ |
| 466 | if (! empty( $GLOBALS['nfw_mysqli'] ) && ! empty( $GLOBALS['nfw_table_prefix'] ) ) { |
| 467 | $nfw_['mysqli'] = $GLOBALS['nfw_mysqli']; |
| 468 | $nfw_['table_prefix'] = $GLOBALS['nfw_table_prefix']; |
| 469 | return true; |
| 470 | } |
| 471 | |
| 472 | // DB |
| 473 | if (! is_file( $wp_config ) ) { |
| 474 | if (! @is_file( $wp_config = dirname( dirname($nfw_['wp_content']) ) . '/wp-config.php') ) { |
| 475 | return 1; |
| 476 | } |
| 477 | } |
| 478 | if (! $nfw_['fh'] = fopen($wp_config, 'r') ) { |
| 479 | return 2; |
| 480 | } |
| 481 | |
| 482 | // Potential SQL flags |
| 483 | $nfw_['MYSQL_CLIENT_FLAGS'] = 0; |
| 484 | |
| 485 | while (! feof($nfw_['fh'])) { |
| 486 | $nfw_['line'] = fgets($nfw_['fh']); |
| 487 | if ( preg_match('/^\s*define\s*\(\s*[\'"]DB_NAME[\'"]\s*,\s*[\'"](.+?)[\'"]/', $nfw_['line'], $nfw_['match']) ) { |
| 488 | $nfw_['DB_NAME'] = $nfw_['match'][1]; |
| 489 | } elseif ( preg_match('/^\s*define\s*\(\s*[\'"]DB_USER[\'"]\s*,\s*[\'"](.+?)[\'"]/', $nfw_['line'], $nfw_['match']) ) { |
| 490 | $nfw_['DB_USER'] = $nfw_['match'][1]; |
| 491 | } elseif ( preg_match('/^\s*define\s*\(\s*[\'"]DB_PASSWORD[\'"]\s*,\s*([\'"])(.+?)\1\s*\);/', $nfw_['line'], $nfw_['match']) ) { |
| 492 | $nfw_['DB_PASSWORD'] = str_replace( '\\'.$nfw_['match'][1], $nfw_['match'][1], $nfw_['match'][2] ); |
| 493 | if ( $nfw_['match'][1] == '"' ) { |
| 494 | $nfw_['DB_PASSWORD'] = str_replace( '\$', '$', $nfw_['DB_PASSWORD'] ); |
| 495 | } |
| 496 | } elseif ( preg_match('/^\s*define\s*\(\s*[\'"]DB_HOST[\'"]\s*,\s*[\'"](.+?)[\'"]/', $nfw_['line'], $nfw_['match']) ) { |
| 497 | $nfw_['DB_HOST'] = $nfw_['match'][1]; |
| 498 | } elseif ( preg_match('/^\s*\$table_prefix\s*=\s*[\'"](.*?)[\'"]/', $nfw_['line'], $nfw_['match']) ) { |
| 499 | $nfw_['table_prefix'] = $nfw_['match'][1]; |
| 500 | } elseif ( preg_match('/^\s*define\s*\(\s*[\'"]MYSQL_CLIENT_FLAGS[\'"]\s*,\s*(.+?)\s*\)/', $nfw_['line'], $nfw_['match']) ) { |
| 501 | if ( empty( $nfw_['MYSQL_CLIENT_FLAGS'] ) ) { |
| 502 | $available_flags = [ |
| 503 | 'MYSQLI_CLIENT_COMPRESS' => MYSQLI_CLIENT_COMPRESS, |
| 504 | 'MYSQLI_CLIENT_FOUND_ROWS' => MYSQLI_CLIENT_FOUND_ROWS, |
| 505 | 'MYSQLI_CLIENT_IGNORE_SPACE' => MYSQLI_CLIENT_IGNORE_SPACE, |
| 506 | 'MYSQLI_CLIENT_INTERACTIVE' => MYSQLI_CLIENT_INTERACTIVE, |
| 507 | 'MYSQLI_CLIENT_SSL' => MYSQLI_CLIENT_SSL, |
| 508 | 'MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT' => MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT |
| 509 | ]; |
| 510 | // There could be one or more flags, e.g., 'MYSQLI_CLIENT_SSL | MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT' |
| 511 | $tmp_flags = explode( '|', $nfw_['match'][1] ); |
| 512 | foreach( $tmp_flags as $tmp_flag ) { |
| 513 | $tmp_flag = trim( $tmp_flag ); |
| 514 | if ( isset( $available_flags[$tmp_flag] ) ) { |
| 515 | $nfw_['MYSQL_CLIENT_FLAGS'] += $available_flags[$tmp_flag]; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | } |
| 521 | fclose($nfw_['fh']); |
| 522 | unset($wp_config); |
| 523 | if (! isset($nfw_['DB_NAME']) || ! isset($nfw_['DB_USER']) || ! isset($nfw_['DB_PASSWORD']) || ! isset($nfw_['DB_HOST']) || ! isset($nfw_['table_prefix']) ) { |
| 524 | return 3; |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * Parse hostname/port and socket. |
| 529 | */ |
| 530 | require_once __DIR__ .'/class-nfw-database.php'; |
| 531 | $host_data = NinjaFirewall_fwdatabase::parse_db_host( $nfw_['DB_HOST'] ); |
| 532 | if ( $host_data ) { |
| 533 | list( $nfw_['DB_HOST'], $nfw_['port'], $nfw_['socket'] ) = $host_data; |
| 534 | } |
| 535 | |
| 536 | // Make sure mysqli extension is loaded |
| 537 | if (! function_exists( 'mysqli_real_connect' ) ) { |
| 538 | return 14; |
| 539 | } |
| 540 | @$nfw_['mysqli'] = mysqli_init(); |
| 541 | @mysqli_real_connect( $nfw_['mysqli'], $nfw_['DB_HOST'], $nfw_['DB_USER'], $nfw_['DB_PASSWORD'], $nfw_['DB_NAME'], $nfw_['port'], $nfw_['socket'], $nfw_['MYSQL_CLIENT_FLAGS'] ); |
| 542 | if ($nfw_['mysqli']->connect_error) { |
| 543 | return 4; |
| 544 | } |
| 545 | |
| 546 | return true; |
| 547 | } |
| 548 | |
| 549 | // ===================================================================== |
| 550 | // Fetch rules and options. |
| 551 | |
| 552 | function nfw_get_data( $what ) { |
| 553 | |
| 554 | global $nfw_; |
| 555 | |
| 556 | if ( $what != 'nfw_rules' ) { |
| 557 | $what = 'nfw_options'; |
| 558 | } |
| 559 | |
| 560 | // WP API |
| 561 | if ( isset( $nfw_['wp_waf'] ) && $nfw_['wp_waf'] == 2 ) { |
| 562 | if ( is_multisite() ) { |
| 563 | $nfw_[ $what ] = get_site_option( $what ); |
| 564 | } else { |
| 565 | $nfw_[ $what ] = get_option( $what ); |
| 566 | } |
| 567 | return true; |
| 568 | |
| 569 | // DB |
| 570 | } else { |
| 571 | // Rules |
| 572 | if ( $what == 'nfw_rules' ) { |
| 573 | if (! $nfw_['result'] = @$nfw_['mysqli']->query('SELECT * FROM `' . $nfw_['mysqli']->real_escape_string($nfw_['table_prefix']) . "options` WHERE `option_name` = 'nfw_rules'") ) { |
| 574 | return 7; |
| 575 | } |
| 576 | if (! $nfw_['rules'] = @$nfw_['result']->fetch_object() ) { |
| 577 | return 8; |
| 578 | } |
| 579 | if (! $nfw_['nfw_rules'] = @unserialize( $nfw_['rules']->option_value ) ) { |
| 580 | return 12; |
| 581 | } |
| 582 | // Options |
| 583 | } else { |
| 584 | /** |
| 585 | * Since PHP 8.1, MySQLi extension throws an Exception on errors |
| 586 | */ |
| 587 | try { |
| 588 | $nfw_['result'] = @$nfw_['mysqli']->query('SELECT * FROM `' . |
| 589 | $nfw_['mysqli']->real_escape_string( $nfw_['table_prefix'] ) . |
| 590 | "options` WHERE `option_name` = 'nfw_options'" |
| 591 | ); |
| 592 | } |
| 593 | catch ( Exception $e ) { |
| 594 | /** |
| 595 | * Maybe this is an old multisite install where the main site |
| 596 | * options table is named 'wp_1_options' instead of 'wp_options' |
| 597 | */ |
| 598 | try { |
| 599 | $nfw_['result'] = @$nfw_['mysqli']->query('SELECT * FROM `' . |
| 600 | $nfw_['mysqli']->real_escape_string( $nfw_['table_prefix'] ) . |
| 601 | "1_options` WHERE `option_name` = 'nfw_options'" |
| 602 | ); |
| 603 | } |
| 604 | catch ( Exception $e ) { |
| 605 | return 5; |
| 606 | } |
| 607 | /** |
| 608 | * Change the table prefix to match 'wp_1_options' |
| 609 | */ |
| 610 | $nfw_['table_prefix'] = "{$nfw_['table_prefix']}1_"; |
| 611 | } |
| 612 | if (! $nfw_['options'] = @$nfw_['result']->fetch_object() ) { |
| 613 | return 6; |
| 614 | } |
| 615 | if (! $nfw_['nfw_options'] = @unserialize( $nfw_['options']->option_value ) ) { |
| 616 | return 11; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | // Make sure we have something or return an error |
| 621 | if ( $what == 'nfw_rules' && ! isset( $nfw_['nfw_rules']['1'] ) ) { |
| 622 | return 16; |
| 623 | } elseif ( $what == 'nfw_options' && ! isset( $nfw_['nfw_options']['enabled'] ) ) { |
| 624 | return 15; |
| 625 | } |
| 626 | |
| 627 | // All good |
| 628 | return true; |
| 629 | } |
| 630 | } |
| 631 | |
| 632 | // ===================================================================== |
| 633 | // Check for HTTPS. |
| 634 | |
| 635 | function nfw_is_https() { |
| 636 | |
| 637 | // Can be defined in the .htninja: |
| 638 | if ( defined('NFW_IS_HTTPS') ) { return; } |
| 639 | |
| 640 | if ( ( isset( $_SERVER['SERVER_PORT'] ) && $_SERVER['SERVER_PORT'] == 443 ) || |
| 641 | ( isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') || |
| 642 | ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] !== 'off' ) ) { |
| 643 | define('NFW_IS_HTTPS', true); |
| 644 | } else { |
| 645 | define('NFW_IS_HTTPS', false); |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | // ===================================================================== |
| 650 | |
| 651 | function nfw_check_upload() { |
| 652 | |
| 653 | if ( defined('NFW_STATUS') ) { return; } |
| 654 | |
| 655 | global $nfw_; |
| 656 | |
| 657 | $f_uploaded = []; |
| 658 | $f_uploaded = nfw_fetch_uploads(); |
| 659 | $tmp = ''; |
| 660 | if ( empty($nfw_['nfw_options']['uploads']) ) { |
| 661 | $tmp = ''; |
| 662 | foreach ($f_uploaded as $key => $value) { |
| 663 | if (! $f_uploaded[$key]['name']) { continue; } |
| 664 | if ( empty( $f_uploaded[$key]['size'] ) ) { $f_uploaded[$key]['size'] = 0; } |
| 665 | $tmp .= $f_uploaded[$key]['name'] . ' (' . number_format($f_uploaded[$key]['size']) . ' bytes) '; |
| 666 | } |
| 667 | if ( $tmp ) { |
| 668 | |
| 669 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 670 | 'Blocked file upload attempt', |
| 671 | rtrim( $tmp, ' '), |
| 672 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 673 | ); |
| 674 | nfw_block(); |
| 675 | } |
| 676 | } else { |
| 677 | foreach ($f_uploaded as $key => $value) { |
| 678 | if (! $f_uploaded[$key]['name']) { continue; } |
| 679 | if ( empty( $f_uploaded[$key]['size'] ) ) { $f_uploaded[$key]['size'] = 0; } |
| 680 | if ( $f_uploaded[$key]['size'] > 67 && $f_uploaded[$key]['size'] < 129 ) { |
| 681 | $data = file_get_contents( $f_uploaded[$key]['tmp_name'] ); |
| 682 | if ( preg_match('`^X5O!P%@AP' . '\[4\\\PZX54\(P\^\)7CC\)7}\$EIC' . |
| 683 | 'AR-STANDARD-ANTIVI' . 'RUS-TEST-FILE!\$H' . '\+H\*' . |
| 684 | '[\x09\x10\x13\x20\x1A]*`', $data) ) { |
| 685 | |
| 686 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 687 | 'EICAR Standard Anti-Virus Test File blocked', |
| 688 | $f_uploaded[$key]['name'] .' ('. number_format($f_uploaded[$key]['size']) .' bytes)', |
| 689 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 690 | ); |
| 691 | nfw_block(); |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | if (! defined('NFW_NO_MIMECHECK') && isset( $f_uploaded[$key]['type'] ) && ! preg_match('/\/.*\bphp\d?\b/i', $f_uploaded[$key]['type']) && |
| 696 | preg_match('/\.ph(?:p([34x7]|5\d?)?|t(ml)?)(?:\.|$)/', $f_uploaded[$key]['name']) ) { |
| 697 | |
| 698 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 699 | 'Blocked file upload attempt (MIME-type mismatch)', |
| 700 | "{$f_uploaded[$key]['name']} != {$f_uploaded[$key]['type']}", |
| 701 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 702 | ); |
| 703 | nfw_block(); |
| 704 | } |
| 705 | |
| 706 | if (! empty($nfw_['nfw_options']['sanitise_fn']) ) { |
| 707 | if ( empty( $nfw_['nfw_options']['substitute'] ) ) { |
| 708 | $nfw_['nfw_options']['substitute'] = 'X'; |
| 709 | } |
| 710 | $tmp = ''; |
| 711 | $f_uploaded_name = $f_uploaded[$key]['name']; |
| 712 | $f_uploaded[$key]['name'] = preg_replace('/[^\w\.\-]/i', $nfw_['nfw_options']['substitute'], $f_uploaded[$key]['name'], -1, $count); |
| 713 | |
| 714 | // Sanitize double (or more) extensions (e.g., foo.php.gif => foo.php_.gif) |
| 715 | $ret = []; |
| 716 | $ret = nfw_sanitize_extensions( $f_uploaded[$key]['name'], $nfw_['nfw_options']['substitute'] ); |
| 717 | if (! empty( $ret['count'] ) ) { |
| 718 | $count += $ret['count']; |
| 719 | $f_uploaded[$key]['name'] = $ret['name']; |
| 720 | } |
| 721 | |
| 722 | if ($count) { |
| 723 | $tmp = ' (sanitising '. $count . ' char. from filename)'; |
| 724 | $_FILES = nfw_sanitize_filename( $_FILES, $f_uploaded_name, $f_uploaded[$key]['name'] ); |
| 725 | } |
| 726 | |
| 727 | } |
| 728 | |
| 729 | if (! isset( $f_uploaded[$key]['size'] ) ) { |
| 730 | $size = 'n/a'; |
| 731 | } else { |
| 732 | $size = number_format( $f_uploaded[$key]['size'] ); |
| 733 | } |
| 734 | |
| 735 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 736 | 'File upload detected, no action taken' . $tmp , |
| 737 | "{$f_uploaded[$key]['name']} ($size bytes)", |
| 738 | NFWLOG_UPLOAD, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 739 | ); |
| 740 | } |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | // ===================================================================== |
| 745 | |
| 746 | function nfw_fetch_uploads() { |
| 747 | |
| 748 | global $file_buffer, $upload_array, $prop_key; |
| 749 | $upload_array = []; |
| 750 | |
| 751 | foreach( $_FILES as $f_key => $f_value ) { |
| 752 | |
| 753 | foreach( $f_value as $prop_key => $prop_value ) { |
| 754 | |
| 755 | // Fetch all but 'error': |
| 756 | if (! in_array( $prop_key, ['name', 'type', 'tmp_name', 'size'] ) ) { continue; } |
| 757 | |
| 758 | $file_buffer = $f_key; |
| 759 | |
| 760 | if ( is_array( $_FILES[$f_key][$prop_key] ) ) { |
| 761 | nfw_recursive_upload( $_FILES[$f_key][$prop_key] ); |
| 762 | } else { |
| 763 | if (! empty( $_FILES[$f_key][$prop_key] ) ) { |
| 764 | $upload_array[$f_key][$prop_key] = $_FILES[$f_key][$prop_key]; |
| 765 | } |
| 766 | } |
| 767 | } |
| 768 | } |
| 769 | return $upload_array; |
| 770 | } |
| 771 | |
| 772 | // ===================================================================== |
| 773 | |
| 774 | function nfw_recursive_upload( $data ) { |
| 775 | |
| 776 | global $file_buffer, $upload_array, $prop_key; |
| 777 | |
| 778 | foreach( $data as $data_key => $data_value ) { |
| 779 | if ( is_array( $data_value ) ) { |
| 780 | $file_buffer .= "_{$data_key}"; |
| 781 | nfw_recursive_upload( $data_value ); |
| 782 | } else { |
| 783 | if ( empty( $data_value ) ) { continue; } |
| 784 | $upload_array["{$file_buffer}_{$data_key}"][$prop_key] = $data_value; |
| 785 | } |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | // ===================================================================== |
| 790 | |
| 791 | function nfw_sanitize_filename( $array, $key, $value ) { |
| 792 | |
| 793 | array_walk_recursive( |
| 794 | $array, function( &$v, $k ) use ( $key, $value ) { |
| 795 | if (! empty( $v ) && $v == $key ) { $v = $value; } |
| 796 | } |
| 797 | ); |
| 798 | return $array; |
| 799 | } |
| 800 | |
| 801 | function nfw_sanitize_extensions( $filename, $subs ) { |
| 802 | |
| 803 | $ret = []; |
| 804 | $ret['count'] = 0; |
| 805 | $parts = explode( '.', $filename ); |
| 806 | $ret['name'] = array_shift( $parts ); |
| 807 | $extension = array_pop( $parts ); |
| 808 | foreach ( $parts as $part ) { |
| 809 | if (! empty( $part ) ) { |
| 810 | $ret['name'] .= ".{$part}{$subs}"; |
| 811 | ++$ret['count']; |
| 812 | } |
| 813 | } |
| 814 | if ( $extension ) { |
| 815 | $ret['name'] .= ".{$extension}"; |
| 816 | } |
| 817 | return $ret; |
| 818 | } |
| 819 | // ===================================================================== |
| 820 | |
| 821 | function nfw_check_admin_request() { |
| 822 | |
| 823 | global $nfw_; |
| 824 | |
| 825 | if ( isset( $nfw_['nfw_rules']['999'] ) ) { |
| 826 | $nfw_['adm_rules'] = []; |
| 827 | foreach ( $nfw_['nfw_rules']['999'] as $key => $value ) { |
| 828 | if ( empty( $nfw_['nfw_rules'][$key]['ena'] ) ) { continue; } |
| 829 | $nfw_['adm_rules'][$key] = $nfw_['nfw_rules'][$key]; |
| 830 | } |
| 831 | if (! empty( $nfw_['adm_rules'] ) ) { |
| 832 | nfw_check_request( $nfw_['adm_rules'], $nfw_['nfw_options'] ); |
| 833 | } |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | // ===================================================================== |
| 838 | |
| 839 | function nfw_check_request( $nfw_rules, $nfw_options ) { |
| 840 | |
| 841 | if ( defined('NFW_STATUS') ) { return; } |
| 842 | |
| 843 | global $nfw_, $HTTP_RAW_POST_DATA; |
| 844 | |
| 845 | foreach ( $nfw_rules as $id => $rules ) { |
| 846 | |
| 847 | if ( empty( $rules['ena']) ) { continue; } |
| 848 | |
| 849 | $wherelist = explode('|', $rules['cha'][1]['whe']); |
| 850 | |
| 851 | foreach ($wherelist as $where) { |
| 852 | |
| 853 | if ( nfw_disabled_scan( $where, $nfw_options ) ) { continue; } |
| 854 | |
| 855 | // ================================================================= |
| 856 | if ( $where == 'RAW' ) { |
| 857 | if (! isset( $HTTP_RAW_POST_DATA ) ) { |
| 858 | @$HTTP_RAW_POST_DATA = file_get_contents( 'php://input' ); |
| 859 | } |
| 860 | |
| 861 | if ( nfw_matching( 'RAW', $_SERVER['REQUEST_METHOD'], $nfw_rules, $rules, 1, $id, $nfw_options, $HTTP_RAW_POST_DATA ) ) { |
| 862 | nfw_check_subrule( 'RAW', $_SERVER['REQUEST_METHOD'], $nfw_rules, $nfw_options, $rules, $id ); |
| 863 | } |
| 864 | continue; |
| 865 | } |
| 866 | |
| 867 | // ================================================================= |
| 868 | if ( $where == 'POST' || $where == 'GET' || $where == 'COOKIE' || |
| 869 | $where == 'SERVER' || $where == 'REQUEST' || $where == 'FILES' || |
| 870 | $where == 'SESSION' |
| 871 | ) { |
| 872 | |
| 873 | if (! isset( $GLOBALS['_'. $where ] ) ) { continue; } |
| 874 | |
| 875 | foreach ($GLOBALS['_' . $where] as $key => $val) { |
| 876 | |
| 877 | if ( nfw_matching( $where, $key, $nfw_rules, $rules, 1, $id, $nfw_options ) ) { |
| 878 | nfw_check_subrule( $where, $key, $nfw_rules, $nfw_options, $rules, $id ); |
| 879 | } |
| 880 | |
| 881 | } |
| 882 | continue; |
| 883 | } |
| 884 | |
| 885 | // ================================================================= |
| 886 | |
| 887 | if ( isset( $_SERVER[$where] ) ) { |
| 888 | |
| 889 | if ( nfw_matching( 'SERVER', $where, $nfw_rules, $rules, 1, $id, $nfw_options ) ) { |
| 890 | nfw_check_subrule( 'SERVER', $where, $nfw_rules, $nfw_options, $rules, $id ); |
| 891 | } |
| 892 | continue; |
| 893 | } |
| 894 | |
| 895 | // ================================================================= |
| 896 | |
| 897 | $w = explode(':', $where); |
| 898 | |
| 899 | // Look for temp hash |
| 900 | if ( isset( $rules['cha'][1]['tmp'] ) && isset( $w[1] ) ) { |
| 901 | $w[1] = @nfw_check_temp_hash( $w[0], $w[1] ); |
| 902 | } |
| 903 | |
| 904 | if ( empty($w[1]) || ! isset( $GLOBALS['_'.$w[0]][$w[1]] ) || nfw_disabled_scan( $w[0], $nfw_options ) ) { |
| 905 | continue; |
| 906 | } |
| 907 | |
| 908 | if ( nfw_matching( $w[0], $w[1], $nfw_rules, $rules, 1, $id, $nfw_options ) ) { |
| 909 | nfw_check_subrule( $w[0], $w[1], $nfw_rules, $nfw_options, $rules, $id ); |
| 910 | } |
| 911 | |
| 912 | // ================================================================= |
| 913 | |
| 914 | } |
| 915 | |
| 916 | } |
| 917 | |
| 918 | } |
| 919 | |
| 920 | // ===================================================================== |
| 921 | // Check hash found in a temporary rule (used for hotfix, 0-day etc). |
| 922 | |
| 923 | function nfw_check_temp_hash( $where, $what ) { |
| 924 | |
| 925 | global $nfw_; |
| 926 | |
| 927 | if (is_array( $GLOBALS["_{$where}"] ) && ! empty( $GLOBALS["_{$where}"] ) ) { |
| 928 | // Loop |
| 929 | foreach( $GLOBALS["_{$where}"] as $key => $value ) { |
| 930 | if ( is_string( $key ) ) { |
| 931 | // Search in the cache |
| 932 | if ( isset( $nfw_['hash'][$key] ) ) { |
| 933 | if ( $nfw_['hash'][$key] == $what ) { |
| 934 | return $key; |
| 935 | } |
| 936 | } else { |
| 937 | // Save it to the cache |
| 938 | $nfw_['hash'][$key] = md5( substr_replace( $key, 'nfw', 2, 0 ) ); |
| 939 | if ( $nfw_['hash'][$key] == $what ) { |
| 940 | return $key; |
| 941 | } |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | } |
| 946 | return $what; |
| 947 | } |
| 948 | |
| 949 | // ===================================================================== |
| 950 | |
| 951 | function nfw_check_subrule( $w0, $w1, $nfw_rules, $nfw_options, $rules, $id ) { |
| 952 | |
| 953 | if ( isset( $rules['cha'][1]['cap'] ) ) { |
| 954 | nfw_matching( $w0, $w1, $nfw_rules, $rules, 2, $id, $nfw_options ); |
| 955 | |
| 956 | } else { |
| 957 | $w = explode(':', $rules['cha'][2]['whe']); |
| 958 | |
| 959 | if (! isset( $w[1] ) ) { |
| 960 | |
| 961 | if ( $w[0] == 'RAW' ) { |
| 962 | if ( nfw_disabled_scan( 'POST', $nfw_options) && $_SERVER['REQUEST_METHOD'] == 'POST' ) { |
| 963 | return; |
| 964 | } |
| 965 | global $HTTP_RAW_POST_DATA; |
| 966 | if (! isset( $HTTP_RAW_POST_DATA ) ) { |
| 967 | @$HTTP_RAW_POST_DATA = file_get_contents( 'php://input' ); |
| 968 | } |
| 969 | nfw_matching( $_SERVER['REQUEST_METHOD'], 'RAW', $nfw_rules, $rules, 2, $id, $nfw_options, $HTTP_RAW_POST_DATA ); |
| 970 | return; |
| 971 | } |
| 972 | $w[2] = $w[1] = $w[0]; |
| 973 | $w[0] = 'SERVER'; |
| 974 | } else { |
| 975 | $w[2] = null; |
| 976 | |
| 977 | // Look for temp hash |
| 978 | if ( isset( $rules['cha'][2]['tmp'] ) ) { |
| 979 | $w[1] = @nfw_check_temp_hash( $w[0], $w[1] ); |
| 980 | } |
| 981 | } |
| 982 | |
| 983 | if (! isset( $GLOBALS['_'.$w[0]][$w[1]] ) ) { |
| 984 | return; |
| 985 | } |
| 986 | |
| 987 | if ( nfw_disabled_scan( $w[0], $nfw_options, $w[2] ) ) { |
| 988 | return; |
| 989 | } else { |
| 990 | nfw_matching( $w[0], $w[1], $nfw_rules, $rules, 2, $id, $nfw_options); |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | } |
| 995 | |
| 996 | // ===================================================================== |
| 997 | |
| 998 | function nfw_disabled_scan( $where, $nfw_options, $extra = null ) { |
| 999 | |
| 1000 | if ( $extra ) { $where = $extra; } |
| 1001 | |
| 1002 | if ( $where == 'POST' && empty($nfw_options['post_scan']) || |
| 1003 | $where == 'GET' && empty($nfw_options['get_scan']) || |
| 1004 | $where == 'COOKIE' && empty($nfw_options['cookies_scan']) || |
| 1005 | $where == 'HTTP_USER_AGENT' && empty($nfw_options['ua_scan']) || |
| 1006 | $where == 'HTTP_REFERER' && empty($nfw_options['referer_scan']) |
| 1007 | ) { |
| 1008 | return 1; |
| 1009 | } |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | // ===================================================================== |
| 1014 | |
| 1015 | function nfw_matching( $where, $key, $nfw_rules, $rules, $subid, $id, $nfw_options, $RAW_POST = null ) { |
| 1016 | |
| 1017 | global $nfw_; |
| 1018 | |
| 1019 | if ( isset( $RAW_POST ) ) { |
| 1020 | $val = $RAW_POST; |
| 1021 | } else { |
| 1022 | $val = $GLOBALS['_'.$where][$key]; |
| 1023 | } |
| 1024 | |
| 1025 | /** |
| 1026 | * Check if the user has the required capability, if any. |
| 1027 | */ |
| 1028 | if ( isset( $rules['cpb'] ) ) { |
| 1029 | $allcaps = NinjaFirewall_session::read('allcaps'); |
| 1030 | if (! empty( $allcaps ) ) { |
| 1031 | $caps = explode('|', $rules['cpb'] ); |
| 1032 | foreach( $caps as $cap ) { |
| 1033 | if ( isset( $allcaps[$cap] ) ) { |
| 1034 | return 0; |
| 1035 | } |
| 1036 | } |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | if ( is_array($val) ) { |
| 1041 | if ( isset( $nfw_['flattened'][$where][$key] ) ) { |
| 1042 | $val = $nfw_['flattened'][$where][$key]; |
| 1043 | } else { |
| 1044 | $val = nfw_flatten( ' ', $val ); |
| 1045 | $nfw_['flattened'][$where][$key] = $val; |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | if ( $where == 'POST' && ! empty($nfw_options['post_b64']) && ! isset($nfw_['b64'][$where][$key]) && $val ) { |
| 1050 | nfw_check_b64($key, $val); |
| 1051 | $nfw_['b64'][$where][$key] = 1; |
| 1052 | } |
| 1053 | |
| 1054 | $transform = 1; |
| 1055 | // NF < 4.1.1: |
| 1056 | if ( isset( $rules['cha'][$subid]['exe'] ) ) { |
| 1057 | $transform = 0; |
| 1058 | if ( function_exists( $rules['cha'][$subid]['exe'] ) ) { |
| 1059 | $val = @$rules['cha'][$subid]['exe']( $val ); |
| 1060 | } |
| 1061 | } |
| 1062 | // NF >= 4.1.1: |
| 1063 | if ( isset( $rules['cha'][$subid]['exm'] ) ) { |
| 1064 | $transform = 0; |
| 1065 | $exe = explode( '|', $rules['cha'][$subid]['exm'] ); |
| 1066 | foreach ( $exe as $f ) { |
| 1067 | if (! function_exists( $f ) ) { break; } |
| 1068 | $val = @$f( $val ); |
| 1069 | } |
| 1070 | } |
| 1071 | |
| 1072 | $t = ''; |
| 1073 | |
| 1074 | if ( isset( $rules['cha'][$subid]['nor'] ) ) { |
| 1075 | $t .= 'N'; |
| 1076 | if ( isset( $nfw_[$t][$where][$key] ) && $transform ) { |
| 1077 | $val = $nfw_[$t][$where][$key]; |
| 1078 | } else { |
| 1079 | $val = nfw_normalize( $val, $nfw_rules ); |
| 1080 | if ( $transform ) { |
| 1081 | $nfw_[$t][$where][$key] = $val; |
| 1082 | } |
| 1083 | } |
| 1084 | } |
| 1085 | |
| 1086 | if ( isset( $rules['cha'][$subid]['tra'] ) ) { |
| 1087 | $t .= 'T' . $rules['cha'][$subid]['tra']; |
| 1088 | if ( isset( $nfw_[$t][$where][$key] ) && $transform ) { |
| 1089 | $val = $nfw_[$t][$where][$key]; |
| 1090 | } else { |
| 1091 | $val = nfw_transform_string( $val, $rules['cha'][$subid]['tra'] ); |
| 1092 | if ( $transform ) { |
| 1093 | $nfw_[$t][$where][$key] = $val; |
| 1094 | } |
| 1095 | } |
| 1096 | } |
| 1097 | if ( empty( $rules['cha'][$subid]['noc']) ) { |
| 1098 | $t .= 'C'; |
| 1099 | if ( isset( $nfw_[$t][$where][$key] ) && $transform ) { |
| 1100 | $val = $nfw_[$t][$where][$key]; |
| 1101 | } else { |
| 1102 | $val = nfw_compress_string( $val ); |
| 1103 | if ( $transform ) { |
| 1104 | $nfw_[$t][$where][$key] = $val; |
| 1105 | } |
| 1106 | } |
| 1107 | } |
| 1108 | |
| 1109 | if ( nfw_operator( $val, $rules['cha'][$subid]['wha'], $rules['cha'][$subid]['ope'] ) ) { |
| 1110 | if ( isset( $rules['cha'][$subid+1]) ) { |
| 1111 | return 1; |
| 1112 | } else { |
| 1113 | if ( isset( $nfw_['flattened'][$where][$key] ) ) { |
| 1114 | |
| 1115 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1116 | $rules['why'], |
| 1117 | "$where:$key = {$nfw_['flattened'][$where][$key]}", |
| 1118 | $rules['lev'], $id, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1119 | ); |
| 1120 | } elseif ( isset( $RAW_POST ) ) { |
| 1121 | |
| 1122 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1123 | $rules['why'], |
| 1124 | "$where:$key = $RAW_POST", |
| 1125 | $rules['lev'], $id, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1126 | ); |
| 1127 | } else { |
| 1128 | |
| 1129 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1130 | $rules['why'], |
| 1131 | "$where:$key = {$GLOBALS['_'.$where][$key]}", |
| 1132 | $rules['lev'], $id, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1133 | ); |
| 1134 | } |
| 1135 | nfw_block(); |
| 1136 | } |
| 1137 | } |
| 1138 | return 0; |
| 1139 | } |
| 1140 | |
| 1141 | // ===================================================================== |
| 1142 | |
| 1143 | function nfw_operator( $val, $what, $op ) { |
| 1144 | |
| 1145 | if (! $val ) { return false; } |
| 1146 | |
| 1147 | if ( $op == 2 ) { |
| 1148 | if ( $val != $what ) { |
| 1149 | return true; |
| 1150 | } |
| 1151 | } elseif ( $op == 3 ) { |
| 1152 | if ( strpos($val, $what) !== FALSE ) { |
| 1153 | return true; |
| 1154 | } |
| 1155 | } elseif ( $op == 4 ) { |
| 1156 | if ( stripos($val, $what) !== FALSE ) { |
| 1157 | return true; |
| 1158 | } |
| 1159 | } elseif ( $op == 5 ) { |
| 1160 | if ( preg_match("`$what`", $val ) ) { |
| 1161 | return true; |
| 1162 | } |
| 1163 | } elseif ( $op == 6 ) { |
| 1164 | if (! preg_match("`$what`", $val) ) { |
| 1165 | return true; |
| 1166 | } |
| 1167 | } elseif ( $op == 7 ) { |
| 1168 | return true; |
| 1169 | |
| 1170 | } elseif ( $op == 8 ) { |
| 1171 | if ( strpos($val, $what) === FALSE ) { |
| 1172 | return true; |
| 1173 | } |
| 1174 | } elseif ( $op == 9 ) { |
| 1175 | if ( stripos($val, $what) === FALSE ) { |
| 1176 | return true; |
| 1177 | } |
| 1178 | } else { |
| 1179 | if ( $val == $what ) { |
| 1180 | return true; |
| 1181 | } |
| 1182 | } |
| 1183 | } |
| 1184 | |
| 1185 | // ===================================================================== |
| 1186 | |
| 1187 | function nfw_normalize( $string, $nfw_rules ) { |
| 1188 | |
| 1189 | if ( empty( $string ) ) { |
| 1190 | return; |
| 1191 | } |
| 1192 | |
| 1193 | $norm = rawurldecode( $string ); |
| 1194 | if ( strpos( $norm, '%' ) !== false ) { |
| 1195 | $norm = rawurldecode( $norm ); |
| 1196 | } |
| 1197 | if (! $norm ) { |
| 1198 | return $string; |
| 1199 | } |
| 1200 | |
| 1201 | if ( preg_match('/&(?:#x(?:00)*[0-9a-f]{2}|#0*[12]?[0-9]{2}|amp|[lg]t|nbsp|quot)(?!;|\d)/i', $norm) ) { |
| 1202 | $norm = preg_replace('/&(#x(?:00)*[0-9a-f]{2}|#0*[12]?[0-9]{2}|amp|[lg]t|nbsp|quot)(?!;|\d)/i', '&\1;', $norm); |
| 1203 | if (! $norm ) { |
| 1204 | return $string; |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | if ( preg_match('/\\\(?:0?[4-9][0-9]|1[0-7][0-9])/', $norm) ) { |
| 1209 | $norm = preg_replace_callback('/\\\(0?[4-9][0-9]|1[0-7][0-9])/', 'nfw_oct2ascii', $norm); |
| 1210 | if (! $norm ) { |
| 1211 | return $string; |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | if ( preg_match('/\\\x[a-f0-9]{2}/i', $norm) ) { |
| 1216 | $norm = preg_replace_callback('/\\\x([a-f0-9]{2})/i', 'nfw_hex2ascii', $norm); |
| 1217 | if (! $norm ) { |
| 1218 | return $string; |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | $norm = nfw_html_decode( $norm ); |
| 1223 | if (! $norm ) { |
| 1224 | return $string; |
| 1225 | } |
| 1226 | |
| 1227 | if ( preg_match('/&#x?[0-9a-f]+;/i', $norm) ) { |
| 1228 | $norm = preg_replace('/(&#x?[0-9a-f]+;)/i', '', $norm); |
| 1229 | if (! $norm ) { |
| 1230 | return $string; |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | if ( preg_match( '/(?:%|\\\)u(?:[0-9a-f]{4}|\{0*[0-9a-f]{2}\})/i', $norm ) ) { |
| 1235 | $norm = preg_replace_callback('/(?:%|\\\)u(?:([0-9a-f]{4})|\{0*([0-9a-f]{2})\})/i', 'nfw_udecode', $norm); |
| 1236 | if (! $norm ) { |
| 1237 | return $string; |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | if ( empty( $nfw_rules[2]['ena'] ) ) { |
| 1242 | $norm = preg_replace('/\x0|%00/', '', $norm); |
| 1243 | if (! $norm ) { |
| 1244 | return $string; |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | return $norm; |
| 1249 | } |
| 1250 | |
| 1251 | // ===================================================================== |
| 1252 | |
| 1253 | function nfw_html_decode( $norm ) { |
| 1254 | |
| 1255 | global $nfw_; |
| 1256 | |
| 1257 | $nfw_['entity_in'] = array ( |
| 1258 | '	','
','!','"','"','#','$', |
| 1259 | '%','&','&',''','(',')','*', |
| 1260 | '*','+',',','.','/',':',';', |
| 1261 | '<','<','=','>','>','?','@','[', |
| 1262 | '[','\',']',']','^','_','`', |
| 1263 | '`','{','{','|','|','|', |
| 1264 | '}','}',' ',' ','<⃒','>⃒',"\xa0" |
| 1265 | ); |
| 1266 | |
| 1267 | $nfw_['entity_out'] = array ( |
| 1268 | '','','!','"','"','#','$','%','&','&',"'",'(',')','*','*','+',',','.','/', |
| 1269 | ':',';','<','<','=','>','>','?','@','[','[','\\',']',']','^','_','`','`', |
| 1270 | '{','{','|','|','|','}','}',' ',' ','','',' ' |
| 1271 | ); |
| 1272 | |
| 1273 | $normout = str_replace( $nfw_['entity_in'], $nfw_['entity_out'], $norm); |
| 1274 | $normout = html_entity_decode( $normout, ENT_QUOTES, 'UTF-8' ); |
| 1275 | |
| 1276 | return $normout; |
| 1277 | |
| 1278 | } |
| 1279 | |
| 1280 | // ===================================================================== |
| 1281 | |
| 1282 | function nfw_compress_string( $string, $where = null ) { |
| 1283 | |
| 1284 | if (! $string ) { return; } |
| 1285 | |
| 1286 | if ( $where == 1 ) { |
| 1287 | $replace = ' '; |
| 1288 | } else { |
| 1289 | $replace = ''; |
| 1290 | } |
| 1291 | |
| 1292 | $string = str_replace( ["\x09", "\x0a","\x0b", "\x0c", "\x0d"], |
| 1293 | $replace, $string); |
| 1294 | $string = trim ( preg_replace('/\x20{2,}/', ' ', $string) ); |
| 1295 | return $string; |
| 1296 | |
| 1297 | } |
| 1298 | |
| 1299 | // ===================================================================== |
| 1300 | |
| 1301 | function nfw_transform_string( $string, $where ) { |
| 1302 | |
| 1303 | if (! $string ) { return; } |
| 1304 | |
| 1305 | if ( $where == 1 ) { |
| 1306 | $norm = trim( preg_replace_callback('((^([^a-z/&|#]*)|([\'"])(?:\\\\.|[^\n\3\\\\])*?\3|(?:[0-9a-z_$]+)|.)'. |
| 1307 | '(?:\s|--[^\n]*+\n|/\*(?:[^*!]|\*(?!/))*+\*/)*'. |
| 1308 | '(?:(?:\#|--(?:[\x00-\x20\x7f]|$)|/\*$)[^\n]*+\n|/\*!(?:\d{5})?|\*/|/\*(?:[^*!]|\*(?!/))*+\*/)*)si', |
| 1309 | 'nfw_delcomments1', $string . "\n") ); |
| 1310 | $norm = preg_replace('/[\'"]\x20*\+?\x20*[\'"]/', '', $norm); |
| 1311 | $norm = strtolower( str_replace( ['+', "'", '"', "(", ')', '`', ',', ';'], ' ', $norm) ); |
| 1312 | |
| 1313 | } elseif ( $where == 2 ) { |
| 1314 | $norm = trim( preg_replace_callback('((^|([\'"])(?:\\\\.|[^\n\2\\\\])*?\2|(?:[0-9a-z_$]+)|.)'. |
| 1315 | '(?://[^\n]*+\n|/\*(?:[^*]|\*(?!/))*+\*/)*)si', |
| 1316 | 'nfw_delcomments2', $string . "\n") ); |
| 1317 | $norm = preg_replace( |
| 1318 | ['/[\n\r\t\f\v]/', '`/\*\s*\*/`', '/[\'"`]\x20*[+.]?\x20*[\'"`]/'], |
| 1319 | ['', ' ', ''], |
| 1320 | $norm |
| 1321 | ); |
| 1322 | } elseif ( $where == 3 ) { |
| 1323 | $norm = preg_replace( |
| 1324 | ['`([\\\"\'^]|\$\w+)`', '`([,;]|\s+)`'], |
| 1325 | ['', ' '], |
| 1326 | $string |
| 1327 | ); |
| 1328 | $norm = preg_replace( |
| 1329 | ['`/(\./)+`','`/{2,}`', '`/(.+?)/\.\./\1\b`', '`\n`', '`\\\`'], |
| 1330 | ['/', '/', '/\1', '', ''], |
| 1331 | $norm |
| 1332 | ); |
| 1333 | } |
| 1334 | |
| 1335 | return $norm; |
| 1336 | |
| 1337 | } |
| 1338 | |
| 1339 | // ===================================================================== |
| 1340 | |
| 1341 | function nfw_delcomments1 ( $match ) { |
| 1342 | |
| 1343 | if (! empty($match[2]) ) { return ' '; } |
| 1344 | if ( $match[0] != $match[1] ) { |
| 1345 | return $match[1]. ' '; |
| 1346 | } |
| 1347 | return $match[1]; |
| 1348 | |
| 1349 | } |
| 1350 | |
| 1351 | function nfw_delcomments2 ( $match ) { |
| 1352 | |
| 1353 | if ( $match[0] != $match[1] ) { |
| 1354 | return $match[1]. ' '; |
| 1355 | } |
| 1356 | return $match[1]; |
| 1357 | |
| 1358 | } |
| 1359 | |
| 1360 | // ===================================================================== 2023-05-16 |
| 1361 | |
| 1362 | function nfw_udecode( $match ) { |
| 1363 | |
| 1364 | if ( isset( $match[2] ) ) { |
| 1365 | return @json_decode('"\\u00'.$match[2].'"'); |
| 1366 | } |
| 1367 | return @json_decode('"\\u'.$match[1].'"'); |
| 1368 | |
| 1369 | } |
| 1370 | |
| 1371 | // ===================================================================== 2023-05-16 |
| 1372 | |
| 1373 | function nfw_oct2ascii( $match ) { |
| 1374 | |
| 1375 | return chr( octdec( $match[1] ) ); |
| 1376 | |
| 1377 | } |
| 1378 | |
| 1379 | // ===================================================================== 2023-05-16 |
| 1380 | |
| 1381 | function nfw_hex2ascii( $match ) { |
| 1382 | |
| 1383 | return chr( hexdec( $match[1] ) ); |
| 1384 | |
| 1385 | } |
| 1386 | |
| 1387 | // ===================================================================== 2023-05-16 |
| 1388 | // Flatten an array. |
| 1389 | |
| 1390 | function nfw_flatten( $glue, $pieces ) { |
| 1391 | |
| 1392 | if ( defined('NFW_STATUS') ) { |
| 1393 | return; |
| 1394 | } |
| 1395 | |
| 1396 | $ret = []; |
| 1397 | |
| 1398 | foreach ( $pieces as $r_pieces ) { |
| 1399 | if ( is_array( $r_pieces ) ) { |
| 1400 | $ret[] = nfw_flatten( $glue, $r_pieces ); |
| 1401 | } else { |
| 1402 | if (! empty( $r_pieces ) ) { |
| 1403 | $ret[] = $r_pieces; |
| 1404 | } |
| 1405 | } |
| 1406 | } |
| 1407 | return implode( $glue, $ret ); |
| 1408 | } |
| 1409 | |
| 1410 | // ===================================================================== |
| 1411 | |
| 1412 | function nfw_check_b64( $key, $string ) { |
| 1413 | |
| 1414 | if ( defined('NFW_STATUS') || strlen( $string ) < 4 ) { |
| 1415 | return; |
| 1416 | } |
| 1417 | |
| 1418 | global $nfw_; |
| 1419 | |
| 1420 | $whitelist = [ |
| 1421 | 'fpd_print_order', // Fancy Product Designer |
| 1422 | 'g-recaptcha-response' // reCAPTCHA |
| 1423 | ]; |
| 1424 | if ( in_array( $key, $whitelist ) ) { |
| 1425 | return; |
| 1426 | } |
| 1427 | |
| 1428 | $decoded = base64_decode( $string ); |
| 1429 | if ( strlen($decoded) < 4 ) { |
| 1430 | return; |
| 1431 | } |
| 1432 | |
| 1433 | if ( preg_match( '`\b(?:\$?_(COOKIE|ENV|FILES|(?:GE|POS|REQUES)T|SE(RVER|SSION))|HTTP_(?:(?:POST|GET)_VARS|RAW_POST_DATA)|GLOBALS)\s*[=\[)]|\b(?i:array_map|assert|base64_(?:de|en)code|chmod|curl_exec|(?:ex|im)plode|error_reporting|eval|file(?:_get_contents)?|f(?:open|write|close)|fsockopen|function_exists|gzinflate|md5|move_uploaded_file|ob_start|passthru|[ep]reg_replace|phpinfo|stripslashes|strrev|(?:shell_)?exec|substr|system|unlink)\s*\(|[\s;]echo\s*[\'"]|<(?i:applet|embed|i?frame(?:set)?|marquee|object|script)\b|\W\$\{\s*[\'"]\w+[\'"]|<\?(?i:php|=)\s|(?i:(?:\b|\d)select\b.+?from\b.+?(?:\b|\d)where|(?:\b|\d)insert\b.+?into\b|(?:\b|\d)union\b.+?(?:\b|\d)select\b|(?:\b|\d)update\b.+?(?:\b|\d)set\b)|^.{0,25}[;{}]?\b[OC]:\d+:"[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*":\d+:{.*?}`', $decoded ) ) { |
| 1434 | // JetPack |
| 1435 | if ( $key === 'args' && ! defined('NFW_WPWAF') && |
| 1436 | preg_match( '/^{"query":"SELECT/', $decoded ) && |
| 1437 | strpos($_SERVER['SCRIPT_NAME'], '/jetpack-temp/jp-helper-') !== FALSE ) { |
| 1438 | return; |
| 1439 | } |
| 1440 | |
| 1441 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1442 | 'BASE64-encoded injection', |
| 1443 | "POST:$key = $string", |
| 1444 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1445 | ); |
| 1446 | nfw_block(); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | // ===================================================================== |
| 1451 | |
| 1452 | function nfw_sanitise( $str, $how, $msg ) { |
| 1453 | |
| 1454 | if ( defined('NFW_STATUS') ) { return; } |
| 1455 | |
| 1456 | if ( empty($str) ) { return $str; } |
| 1457 | |
| 1458 | global $nfw_; |
| 1459 | |
| 1460 | if (is_string($str) ) { |
| 1461 | |
| 1462 | if ($how == 1) { |
| 1463 | // Full WAF |
| 1464 | if (! empty( $nfw_['mysqli'] ) ) { |
| 1465 | $str2 = $nfw_['mysqli']->real_escape_string($str); |
| 1466 | // WP WAF |
| 1467 | } else { |
| 1468 | global $wpdb; |
| 1469 | $str2 = @$wpdb->_real_escape($str); |
| 1470 | } |
| 1471 | $str2 = str_replace( ['`', '<', '>'], ['\\`', '<', '>'], $str2); |
| 1472 | if ( $msg == 'GET' && strpos( $str2, '/') !== false ) { |
| 1473 | $str2 = str_replace( ['*', '?'], ['\*', '\?'], $str2 ); |
| 1474 | } |
| 1475 | } elseif ($how == 2) { |
| 1476 | $str2 = str_replace( ['\\', "'", '"', "\x0d", "\x0a", "\x00", "\x1a", '`', '<', '>'], |
| 1477 | ['\\\\', "\\'", '\\"', '-', '-', '-', '-', '\\`', '<', '>'], $str); |
| 1478 | } else { |
| 1479 | $str2 = str_replace( ['\\', "'", "\x00", "\x1a", '`', '<'], |
| 1480 | ['\\\\', "\\'", '-', '-', '\\`', '<'], $str); |
| 1481 | } |
| 1482 | if (! empty($nfw_['nfw_options']['debug']) ) { |
| 1483 | if ($str2 != $str) { |
| 1484 | |
| 1485 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1486 | 'Sanitising user input', |
| 1487 | "$msg: $str", |
| 1488 | NFWLOG_DEBUG, 0, $nfw_['nfw_options'], $nfw_['log_dir'] // '7' for debugging mode only |
| 1489 | ); |
| 1490 | } |
| 1491 | return $str; |
| 1492 | } |
| 1493 | if ($str2 != $str) { |
| 1494 | |
| 1495 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1496 | 'Sanitising user input', |
| 1497 | "$msg: $str", |
| 1498 | NFWLOG_INFO, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1499 | ); |
| 1500 | } |
| 1501 | return $str2; |
| 1502 | |
| 1503 | } else if (is_array($str) ) { |
| 1504 | foreach($str as $key => $value) { |
| 1505 | if ($how == 3) { |
| 1506 | $key2 = str_replace( ['\\', "'", "\x00", "\x1a", '`', '<', '>'], |
| 1507 | ['\\\\', "\\'", '-', '-', '\\`', '<', '>'], $key, $occ); |
| 1508 | } else { |
| 1509 | $key2 = str_replace( ['\\', "'", '"', "\x0d", "\x0a", "\x00", "\x1a", '`', '<', '>'], |
| 1510 | ['\\\\', "\\'", '\\"', '-', '-', '-', '-', '`', '<', '>'], $key, $occ); |
| 1511 | } |
| 1512 | if ($occ) { |
| 1513 | unset($str[$key]); |
| 1514 | |
| 1515 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1516 | 'Sanitising user input', |
| 1517 | "$msg: $key", |
| 1518 | NFWLOG_INFO, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1519 | ); |
| 1520 | } |
| 1521 | $str[$key2] = nfw_sanitise($value, $how, $msg); |
| 1522 | } |
| 1523 | return $str; |
| 1524 | } |
| 1525 | } |
| 1526 | |
| 1527 | // ===================================================================== 2023-05-16 |
| 1528 | // Block the user and display a message. |
| 1529 | |
| 1530 | function nfw_block() { |
| 1531 | |
| 1532 | if ( defined('NFW_STATUS') ) { |
| 1533 | return; |
| 1534 | } |
| 1535 | |
| 1536 | global $nfw_; |
| 1537 | |
| 1538 | if (! empty( $nfw_['nfw_options']['debug'] ) ) { |
| 1539 | return; |
| 1540 | } |
| 1541 | |
| 1542 | $http_codes = [ |
| 1543 | 400 => '400 Bad Request', |
| 1544 | 403 => '403 Forbidden', |
| 1545 | 404 => '404 Not Found', |
| 1546 | 406 => '406 Not Acceptable', |
| 1547 | 418 => "418 I'm a teapot", |
| 1548 | 500 => '500 Internal Server Error', |
| 1549 | 503 => '503 Service Unavailable' |
| 1550 | ]; |
| 1551 | if (! isset( $http_codes[$nfw_['nfw_options']['ret_code']] ) ) { |
| 1552 | $nfw_['nfw_options']['ret_code'] = 403; |
| 1553 | } |
| 1554 | |
| 1555 | if ( empty( $nfw_['incidentID'] ) ) { |
| 1556 | $nfw_['incidentID'] = '000000'; |
| 1557 | } |
| 1558 | |
| 1559 | $tmp = str_replace( |
| 1560 | '%%NUM_INCIDENT%%', |
| 1561 | $nfw_['incidentID'], |
| 1562 | base64_decode( $nfw_['nfw_options']['blocked_msg'] ) |
| 1563 | ); |
| 1564 | |
| 1565 | if ( isset( $nfw_['nfw_options']['logo'] ) ) { |
| 1566 | $tmp = str_replace( |
| 1567 | '%%NINJA_LOGO%%', |
| 1568 | "<img alt='NinjaFirewall' src='{$nfw_['nfw_options']['logo']}' />", |
| 1569 | $tmp |
| 1570 | ); |
| 1571 | } |
| 1572 | |
| 1573 | $tmp = str_replace('%%REM_ADDRESS%%', NFW_REMOTE_ADDR, $tmp ); |
| 1574 | |
| 1575 | NinjaFirewall_session::delete(); |
| 1576 | |
| 1577 | if (! headers_sent() ) { |
| 1578 | header("HTTP/1.1 {$http_codes[$nfw_['nfw_options']['ret_code']]}" ); |
| 1579 | header("Status: {$http_codes[$nfw_['nfw_options']['ret_code']]}" ); |
| 1580 | header('Pragma: no-cache'); |
| 1581 | header('Cache-Control: no-cache, no-store, must-revalidate'); |
| 1582 | header('Expires: 0'); |
| 1583 | } |
| 1584 | |
| 1585 | echo "<!DOCTYPE HTML PUBLIC '-//IETF//DTD HTML 2.0//EN'><html><head>". |
| 1586 | "<title>NinjaFirewall {$http_codes[$nfw_['nfw_options']['ret_code']]}</title>". |
| 1587 | "<style>body{font-family:sans-serif;font-size:13px;color:#000;}</style>". |
| 1588 | "<meta http-equiv='Content-Type' content='text/html; charset=utf-8'></head>". |
| 1589 | "<body bgcolor='white'>$tmp</body></html>"; |
| 1590 | exit; |
| 1591 | } |
| 1592 | |
| 1593 | // ===================================================================== 2023-05-16 |
| 1594 | // Return the time using hrtime (PHP >= 7.3) or microtime. |
| 1595 | |
| 1596 | function nfw_fc_metrics( $action = 'start') { |
| 1597 | |
| 1598 | if ( function_exists('hrtime') ) { |
| 1599 | $metrics = 'hrtime'; |
| 1600 | } else { |
| 1601 | $metrics = 'microtime'; |
| 1602 | } |
| 1603 | |
| 1604 | // Start the chrono |
| 1605 | if ( $action == 'start') { |
| 1606 | return $metrics(true); |
| 1607 | } |
| 1608 | |
| 1609 | global $nfw_; |
| 1610 | |
| 1611 | if ( empty( $nfw_['fw_starttime'] ) ) { |
| 1612 | return 0; |
| 1613 | } |
| 1614 | |
| 1615 | // Stop the chrono and return the formatted elapsed time |
| 1616 | if ( $metrics == 'hrtime') { |
| 1617 | return number_format( ( $metrics(true) - $nfw_['fw_starttime'] ) / 1000000000, 5 ); |
| 1618 | } else { |
| 1619 | return number_format( $metrics(true) - $nfw_['fw_starttime'], 5 ); |
| 1620 | } |
| 1621 | } |
| 1622 | |
| 1623 | // ===================================================================== |
| 1624 | |
| 1625 | function nfw_bfd($where) { |
| 1626 | |
| 1627 | if ( defined('NFW_STATUS') ) { return; } |
| 1628 | |
| 1629 | global $nfw_; |
| 1630 | $bf_conf_dir = $nfw_['log_dir'] . '/cache'; |
| 1631 | |
| 1632 | if (! is_file($bf_conf_dir . '/bf_conf.php') ) { |
| 1633 | return; |
| 1634 | } |
| 1635 | |
| 1636 | $now = time(); |
| 1637 | require($bf_conf_dir . '/bf_conf.php'); |
| 1638 | if ( empty($bf_enable) ) { |
| 1639 | return; |
| 1640 | } |
| 1641 | |
| 1642 | if ( $where == 2 && empty($bf_xmlrpc) ) { |
| 1643 | return; |
| 1644 | } |
| 1645 | |
| 1646 | // NinjaFirewall <= 3.4.2: |
| 1647 | if (! isset( $auth_msgtxt ) ) { |
| 1648 | $auth_msgtxt = $auth_msg; |
| 1649 | $b64 = 0; |
| 1650 | // NinjaFirewall > 3.4.2: |
| 1651 | } else { |
| 1652 | $b64 = 1; |
| 1653 | } |
| 1654 | // NinjaFirewall < 3.5: |
| 1655 | if (! isset( $bf_allow_bot ) ) { |
| 1656 | $bf_allow_bot = 0; |
| 1657 | } |
| 1658 | if (! isset( $bf_type ) ) { |
| 1659 | $bf_type = 0; |
| 1660 | } |
| 1661 | |
| 1662 | if ( $where == 1 && $bf_allow_bot == 0 ) { |
| 1663 | nfw_is_bot( 'wp-login.php' ); |
| 1664 | } |
| 1665 | |
| 1666 | if ( $where == 1 && isset( $_REQUEST['action'] ) && in_array( $_REQUEST['action'], ['postpass', 'logout', 'lostpassword', 'retrievepassword', 'resetpass', 'rp', 'register', 'confirmaction'] ) ) { |
| 1667 | return; |
| 1668 | } |
| 1669 | |
| 1670 | if ( $bf_enable == 2 ) { |
| 1671 | nfw_check_auth($auth_name, $auth_pass, $auth_msgtxt, $bf_rand, $b64, $bf_allow_bot, $bf_type, $captcha_text, $bf_nosig); |
| 1672 | return; |
| 1673 | } |
| 1674 | |
| 1675 | |
| 1676 | if ( is_file($bf_conf_dir . '/bf_blocked' . $where . $_SERVER['SERVER_NAME'] . $bf_rand) ) { |
| 1677 | |
| 1678 | $mtime = filemtime( $bf_conf_dir . '/bf_blocked' . $where . $_SERVER['SERVER_NAME'] . $bf_rand ); |
| 1679 | if ( ($now - $mtime) < $bf_bantime * 60 ) { |
| 1680 | |
| 1681 | nfw_check_auth($auth_name, $auth_pass, $auth_msgtxt, $bf_rand, $b64, $bf_allow_bot, $bf_type, $captcha_text, $bf_nosig); |
| 1682 | return; |
| 1683 | } else { |
| 1684 | |
| 1685 | @unlink($bf_conf_dir . '/bf_blocked' . $where . $_SERVER['SERVER_NAME'] . $bf_rand); |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | |
| 1690 | if ( strpos($bf_request, $_SERVER['REQUEST_METHOD']) === false ) { |
| 1691 | return; |
| 1692 | } |
| 1693 | |
| 1694 | |
| 1695 | if ( is_file($bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand ) ) { |
| 1696 | $tmp_log = file( $bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES); |
| 1697 | if ( count( $tmp_log) >= $bf_attempt ) { |
| 1698 | if ( ($tmp_log[count($tmp_log) - 1] - $tmp_log[count($tmp_log) - $bf_attempt]) <= $bf_maxtime ) { |
| 1699 | |
| 1700 | $bfdh = fopen( $bf_conf_dir . '/bf_blocked' . $where . $_SERVER['SERVER_NAME'] . $bf_rand, 'w'); |
| 1701 | fclose( $bfdh ); |
| 1702 | |
| 1703 | unlink( $bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand ); |
| 1704 | $nfw_['nfw_options']['ret_code'] = '401'; |
| 1705 | if ($where == 1) { |
| 1706 | $where = 'wp-login.php'; |
| 1707 | } else { |
| 1708 | $where = 'XML-RPC API'; |
| 1709 | } |
| 1710 | if ( $bf_type == 0 ) { |
| 1711 | |
| 1712 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1713 | 'Brute-force attack detected on ' . $where, |
| 1714 | 'enabling HTTP authentication for ' . $bf_bantime . 'mn', |
| 1715 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1716 | ); |
| 1717 | } else { |
| 1718 | |
| 1719 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1720 | 'Brute-force attack detected on ' . $where, |
| 1721 | 'enabling CAPTCHA for ' . $bf_bantime . 'mn', |
| 1722 | NFWLOG_CRITICAL, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1723 | ); |
| 1724 | } |
| 1725 | /** |
| 1726 | * Write to the AUTH log. |
| 1727 | */ |
| 1728 | if (! empty( $bf_authlog ) ) { |
| 1729 | if (! defined('NFW_REMOTE_ADDR') ) { |
| 1730 | NinjaFirewall_IP::check_ip( $nfw_['nfw_options'] ); |
| 1731 | } |
| 1732 | if ( defined('LOG_AUTHPRIV') ) { |
| 1733 | $tmp = LOG_AUTHPRIV; |
| 1734 | } else { |
| 1735 | $tmp = LOG_AUTH; |
| 1736 | } |
| 1737 | @ openlog('ninjafirewall', LOG_NDELAY|LOG_PID, $tmp); |
| 1738 | @ syslog(LOG_INFO, 'Possible brute-force attack from '. NFW_REMOTE_ADDR . |
| 1739 | ' on '. $_SERVER['SERVER_NAME'] .' ('. $where .'). Blocking access for ' . $bf_bantime . 'mn.'); |
| 1740 | @ closelog(); |
| 1741 | } |
| 1742 | nfw_check_auth($auth_name, $auth_pass, $auth_msgtxt, $bf_rand, $b64, $bf_allow_bot, $bf_type, $captcha_text, $bf_nosig); |
| 1743 | return; |
| 1744 | |
| 1745 | } |
| 1746 | } |
| 1747 | $mtime = filemtime( $bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand ); |
| 1748 | if ( ($now - $mtime) > $bf_bantime * 60 ) { |
| 1749 | unlink( $bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand ); |
| 1750 | } |
| 1751 | } |
| 1752 | |
| 1753 | @file_put_contents($bf_conf_dir . '/bf_' . $where . $_SERVER['SERVER_NAME'] . $bf_rand, $now . "\n", FILE_APPEND | LOCK_EX); |
| 1754 | |
| 1755 | } |
| 1756 | |
| 1757 | // ===================================================================== 2023-05-16 |
| 1758 | // Block the request if a bot is detected. |
| 1759 | |
| 1760 | function nfw_is_bot( $block = '') { |
| 1761 | |
| 1762 | global $nfw_; |
| 1763 | |
| 1764 | if ( empty( $_SERVER['HTTP_ACCEPT'] ) || |
| 1765 | empty( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) || |
| 1766 | empty( $_SERVER['HTTP_USER_AGENT'] ) || |
| 1767 | stripos( $_SERVER['HTTP_USER_AGENT'], 'Mozilla') === FALSE ) { |
| 1768 | |
| 1769 | if (! empty( $block ) ) { |
| 1770 | // Whitelist server IP and private addresses calling admin-ajax.php |
| 1771 | if ( $block == 'admin-ajax.php') { |
| 1772 | if ( NFW_REMOTE_ADDR == $_SERVER['SERVER_ADDR'] || |
| 1773 | NFW_REMOTE_ADDR_PRIVATE == true ) { |
| 1774 | |
| 1775 | return true; |
| 1776 | } |
| 1777 | $block = 'Blocked access to admin-ajax.php'; |
| 1778 | |
| 1779 | // No whitelist needed for the login page: |
| 1780 | } else { |
| 1781 | $block = 'Blocked access to the login page'; |
| 1782 | } |
| 1783 | |
| 1784 | header('HTTP/1.0 404 Not Found'); |
| 1785 | header('Pragma: no-cache'); |
| 1786 | header('Cache-Control: no-cache, no-store, must-revalidate'); |
| 1787 | header('Expires: 0'); |
| 1788 | $nfw_['nfw_options']['ret_code'] = '404'; |
| 1789 | |
| 1790 | $nfw_['incidentID'] = NinjaFirewall_log::write( |
| 1791 | $block, |
| 1792 | 'bot detection is enabled', |
| 1793 | NFWLOG_MEDIUM, 0, $nfw_['nfw_options'], $nfw_['log_dir'] |
| 1794 | ); |
| 1795 | NinjaFirewall_session::delete(); |
| 1796 | exit('404 Not Found'); |
| 1797 | } |
| 1798 | |
| 1799 | return true; |
| 1800 | } |
| 1801 | return false; |
| 1802 | } |
| 1803 | |
| 1804 | // ===================================================================== |
| 1805 | |
| 1806 | function nfw_check_auth( $auth_name, $auth_pass, $auth_msgtxt, $bf_rand, $b64, $bf_allow_bot, $bf_type, $captcha_text, $bf_nosig ) { |
| 1807 | |
| 1808 | if ( defined('NFW_STATUS') ) { return; } |
| 1809 | |
| 1810 | // Prevent favicon.ico 302 redirection to the login page |
| 1811 | // due to plugins that do not handle well the login page access: |
| 1812 | if ( isset( $_GET['redirect_to'] ) && strpos( $_GET['redirect_to'], 'favicon.ico' ) !== FALSE ) { |
| 1813 | exit; |
| 1814 | } |
| 1815 | |
| 1816 | NinjaFirewall_session::start(); |
| 1817 | |
| 1818 | global $nfw_; |
| 1819 | |
| 1820 | $nfw_bfd = NinjaFirewall_session::read('nfw_bfd'); |
| 1821 | if ( isset( $nfw_bfd ) && $nfw_bfd == $bf_rand ) { |
| 1822 | return; |
| 1823 | } |
| 1824 | |
| 1825 | if ( $bf_type == 0 ) { |
| 1826 | // Password protection |
| 1827 | if (! empty($_REQUEST['u']) && ! empty($_REQUEST['p']) ) { |
| 1828 | if ( $_REQUEST['u'] === $auth_name && |
| 1829 | hash_equals( $auth_pass, sha1( $_REQUEST['p'] ) ) ) { |
| 1830 | |
| 1831 | NinjaFirewall_session::write( ['nfw_bfd' => $bf_rand ] ); |
| 1832 | return; |
| 1833 | } |
| 1834 | } |
| 1835 | } else { |
| 1836 | // Make sure the GD extension is loaded |
| 1837 | if ( function_exists( 'gd_info' ) ) { |
| 1838 | // Captcha protection |
| 1839 | $nfw_bfd_c = NinjaFirewall_session::read('nfw_bfd_c'); |
| 1840 | if (! empty( $_REQUEST['c'] ) && isset( $nfw_bfd_c ) ) { |
| 1841 | if ( $nfw_bfd_c == strtolower( $_REQUEST['c'] ) ) { |
| 1842 | NinjaFirewall_session::write( ['nfw_bfd' => $bf_rand ] ); |
| 1843 | NinjaFirewall_session::delete('nfw_bfd_c'); |
| 1844 | return; |
| 1845 | } |
| 1846 | } |
| 1847 | } else { |
| 1848 | // Return in no GD extension: |
| 1849 | return; |
| 1850 | } |
| 1851 | } |
| 1852 | |
| 1853 | NinjaFirewall_session::delete(); |
| 1854 | |
| 1855 | if ( $b64 ) { $auth_msgtxt = base64_decode( $auth_msgtxt ); } |
| 1856 | |
| 1857 | header('HTTP/1.0 401 Unauthorized'); |
| 1858 | header('X-Frame-Options: SAMEORIGIN'); |
| 1859 | header('Pragma: no-cache'); |
| 1860 | header('Cache-Control: no-cache, no-store, must-revalidate'); |
| 1861 | header('Expires: 0'); |
| 1862 | if ( empty( $bf_nosig ) ) { |
| 1863 | $bf_nosig = 'Brute-force protection by NinjaFirewall'; |
| 1864 | } else { |
| 1865 | $bf_nosig = ''; |
| 1866 | } |
| 1867 | if ( $bf_type == 0 ) { |
| 1868 | $message = '<html><head><title>'. $bf_nosig .'</title><link rel="stylesheet" href="./wp-includes/css/buttons.min.css" type="text/css"><link rel="stylesheet" href="./wp-admin/css/login.min.css" type="text/css"><link rel="stylesheet" href="./wp-admin/css/forms.min.css" type="text/css"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body class="login wp-core-ui" style="color:#444"><div id="login"><center><h2>' . $auth_msgtxt . '</h2><form method="post"><label>'. $bf_nosig .'</label><br><br><p><input class="input" type="text" name="u" placeholder="Username" autofocus></p><p><input class="input" type="password" name="p" placeholder="Password"></p><p align="right"><input type="submit" value="Login Page »" class="button-secondary"></p><input type="hidden" name="reauth" value="1"></form></center></div></body></html>'; |
| 1869 | } else { |
| 1870 | $captcha = nfw_get_captcha(); |
| 1871 | if ( $captcha === false ) { |
| 1872 | return; |
| 1873 | } |
| 1874 | $message = '<html><head><title>'. $bf_nosig .'</title><link rel="stylesheet" href="./wp-includes/css/buttons.min.css" type="text/css"><link rel="stylesheet" href="./wp-admin/css/login.min.css" type="text/css"><link rel="stylesheet" href="./wp-admin/css/forms.min.css" type="text/css"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body class="login wp-core-ui" style="color:#444"><div id="login"><center><form method="post"><p><label>'. base64_decode( $captcha_text ) .'</label></p><br><p>' . $captcha . '</p><p><input class="input" type="text" name="c" autofocus></p><p align="right"><input type="submit" value="Login Page »" class="button-secondary"></p><input type="hidden" name="reauth" value="1"></form><br><label>'. $bf_nosig .'</label></center></div></body></html>'; |
| 1875 | } |
| 1876 | if ( $bf_allow_bot == 0 ) { |
| 1877 | if ( @ini_set('zlib.output_compression','Off') !== false ) { |
| 1878 | header('Content-Encoding: gzip'); |
| 1879 | echo gzencode( $message, 1 ); |
| 1880 | exit; |
| 1881 | } |
| 1882 | } |
| 1883 | header('Content-Type: text/html; charset=utf-8'); |
| 1884 | echo $message; |
| 1885 | exit; |
| 1886 | } |
| 1887 | |
| 1888 | // ===================================================================== |
| 1889 | function nfw_get_captcha() { |
| 1890 | |
| 1891 | if (! function_exists( 'imagettftext' ) ) { |
| 1892 | echo "<div id='login_error'>NinjaFirewall error: PHP imagettftext() function doesn't exist, the captcha can't be displayed. Make sure PHP is compiled with freetype support (--with-freetype-dir=DIR).</div>"; |
| 1893 | return false; |
| 1894 | } |
| 1895 | |
| 1896 | NinjaFirewall_session::start(); |
| 1897 | |
| 1898 | $characters = 'AaBbCcDdEeFfGgHhiIJjKkLMmNnPpRrSsTtUuVvWwXxYyZz123456789'; |
| 1899 | $captcha = ''; |
| 1900 | while( strlen( $captcha ) < 5 ) { |
| 1901 | $captcha .= substr( $characters, mt_rand() % strlen( $characters ), 1 ); |
| 1902 | } |
| 1903 | |
| 1904 | // Background image with dimensions |
| 1905 | $image = imagecreate( 200, 60 ); |
| 1906 | // Background color: |
| 1907 | imagecolorallocate( $image, 255, 255, 255 ); |
| 1908 | // Text color: |
| 1909 | $text_color = imagecolorallocate( $image, 77, 77, 77 ); |
| 1910 | // Font: |
| 1911 | global $nfw_; |
| 1912 | if ( is_file( "{$nfw_['log_dir']}/font.ttf" ) ) { |
| 1913 | imagettftext( $image, 35, 0, 15, 45, $text_color, "{$nfw_['log_dir']}/font.ttf", $captcha ); |
| 1914 | } else { |
| 1915 | imagettftext( $image, 35, 0, 15, 45, $text_color, __DIR__ . '/share/font.ttf', $captcha ); |
| 1916 | } |
| 1917 | |
| 1918 | ob_start(); |
| 1919 | imagepng( $image ); |
| 1920 | $img_content = ob_get_contents(); |
| 1921 | ob_end_clean(); |
| 1922 | |
| 1923 | $res = '<img src="data:image/png;base64,'. base64_encode( $img_content ) .'" />'; |
| 1924 | |
| 1925 | NinjaFirewall_session::write( ['nfw_bfd_c' => strtolower( $captcha ) ] ); |
| 1926 | |
| 1927 | return $res; |
| 1928 | } |
| 1929 | |
| 1930 | // ===================================================================== 2023-05-16 |
| 1931 | // Handle HTTP response headers. |
| 1932 | |
| 1933 | function nfw_response_headers() { |
| 1934 | |
| 1935 | if ( defined('NFW_CUSTHEADERS') ) { |
| 1936 | nfw_custom_headers(); |
| 1937 | } |
| 1938 | |
| 1939 | if (! defined('NFW_RESHEADERS') ) { |
| 1940 | return; |
| 1941 | } |
| 1942 | |
| 1943 | $NFW_RESHEADERS = NFW_RESHEADERS; |
| 1944 | // NFW_RESHEADERS: |
| 1945 | // 0000000000 |
| 1946 | // ||||||||||_ SameSite[0-2] |
| 1947 | // |||||||||__ Referrer-Policy [0-8] |
| 1948 | // ||||||||___ Content-Security-Policy (backend) [0-1] |
| 1949 | // |||||||____ Content-Security-Policy (frontend) [0-1] |
| 1950 | // ||||||_____ Strict-Transport-Security (includeSubDomains) [0-1] |
| 1951 | // |||||______ Strict-Transport-Security [0-4] |
| 1952 | // ||||_______ X-XSS-Protection [0-3] |
| 1953 | // |||________ X-Frame-Options [0-2] |
| 1954 | // ||_________ X-Content-Type-Options [0-1] |
| 1955 | // |__________ HttpOnly cookies [0-1] |
| 1956 | |
| 1957 | // Force HttpOnly and/or SameSite cookie |
| 1958 | if (! empty( $NFW_RESHEADERS[0] ) || ! empty( $NFW_RESHEADERS[9] ) ) { |
| 1959 | $rewrite = []; |
| 1960 | // Parse all response headers |
| 1961 | foreach (headers_list() as $header) { |
| 1962 | // Ignore it if it is not a cookie |
| 1963 | if ( strpos( $header, 'Set-Cookie:' ) === false ) { continue; } |
| 1964 | $extra = ''; |
| 1965 | // HttpOnly |
| 1966 | if (! empty( $NFW_RESHEADERS[0] ) ) { |
| 1967 | // Does it have the HttpOnly flag on |
| 1968 | if ( stripos( $header, '; HttpOnly') === false) { |
| 1969 | $extra .= '; HttpOnly'; |
| 1970 | } |
| 1971 | } |
| 1972 | // SameSite |
| 1973 | if (! empty( $NFW_RESHEADERS[9] ) ) { |
| 1974 | // Lax |
| 1975 | if ( $NFW_RESHEADERS[9] == 1 |
| 1976 | && stripos( $header, '; SameSite=Lax' ) === false ) { |
| 1977 | |
| 1978 | $extra .= '; SameSite=Lax'; |
| 1979 | // Strict |
| 1980 | } elseif ( $NFW_RESHEADERS[9] == 2 |
| 1981 | && stripos( $header, '; SameSite=Strict' ) === false ) { |
| 1982 | |
| 1983 | $extra .= '; SameSite=Strict'; |
| 1984 | } |
| 1985 | } |
| 1986 | // Save cookie |
| 1987 | $rewrite[] = "{$header}{$extra}"; |
| 1988 | } |
| 1989 | |
| 1990 | // Shall we rewrite cookies |
| 1991 | if (! empty( $rewrite ) ) { |
| 1992 | // Remove all original cookies |
| 1993 | header_remove('Set-Cookie'); |
| 1994 | foreach( $rewrite as $cookie ) { |
| 1995 | // Inject ours instead |
| 1996 | header( $cookie, false ); |
| 1997 | } |
| 1998 | } |
| 1999 | } |
| 2000 | |
| 2001 | if (! empty( $NFW_RESHEADERS[1] ) ) { |
| 2002 | header('X-Content-Type-Options: nosniff'); |
| 2003 | } |
| 2004 | |
| 2005 | if (! empty( $NFW_RESHEADERS[2] ) ) { |
| 2006 | if ($NFW_RESHEADERS[2] == 1) { |
| 2007 | header('X-Frame-Options: SAMEORIGIN'); |
| 2008 | } else { |
| 2009 | header('X-Frame-Options: DENY'); |
| 2010 | } |
| 2011 | } |
| 2012 | |
| 2013 | if ( empty( $NFW_RESHEADERS[3] ) ) { |
| 2014 | header('X-XSS-Protection: 0'); |
| 2015 | } elseif ( $NFW_RESHEADERS[3] == 1 ) { |
| 2016 | header('X-XSS-Protection: 1; mode=block'); |
| 2017 | } elseif ( $NFW_RESHEADERS[3] == 2 ) { |
| 2018 | header('X-XSS-Protection: 1'); |
| 2019 | } |
| 2020 | |
| 2021 | if (! empty( $NFW_RESHEADERS[6] ) && |
| 2022 | strpos($_SERVER['SCRIPT_NAME'], '/wp-admin/') === FALSE ) { |
| 2023 | |
| 2024 | header('Content-Security-Policy: ' . CSP_FRONTEND_DATA); |
| 2025 | } |
| 2026 | if (! empty( $NFW_RESHEADERS[7] ) && |
| 2027 | strpos($_SERVER['SCRIPT_NAME'], '/wp-admin/') !== FALSE ) { |
| 2028 | |
| 2029 | header('Content-Security-Policy: ' . CSP_BACKEND_DATA); |
| 2030 | } |
| 2031 | |
| 2032 | if (! empty( $NFW_RESHEADERS[8] ) ) { |
| 2033 | if ( $NFW_RESHEADERS[8] == 1 ) { |
| 2034 | $rf = 'no-referrer'; |
| 2035 | } elseif ( $NFW_RESHEADERS[8] == 2 ) { |
| 2036 | $rf = 'no-referrer-when-downgrade'; |
| 2037 | } elseif ( $NFW_RESHEADERS[8] == 3 ) { |
| 2038 | $rf = 'origin'; |
| 2039 | } elseif ( $NFW_RESHEADERS[8] == 4 ) { |
| 2040 | $rf = 'origin-when-cross-origin'; |
| 2041 | } elseif ( $NFW_RESHEADERS[8] == 5 ) { |
| 2042 | $rf = 'strict-origin'; |
| 2043 | } elseif ( $NFW_RESHEADERS[8] == 6 ) { |
| 2044 | $rf = 'strict-origin-when-cross-origin'; |
| 2045 | } elseif ( $NFW_RESHEADERS[8] == 7 ) { |
| 2046 | $rf = 'same-origin'; |
| 2047 | } else { |
| 2048 | $rf = 'unsafe-url'; |
| 2049 | } |
| 2050 | header("Referrer-Policy: $rf"); |
| 2051 | } |
| 2052 | |
| 2053 | // Stop here if no more headers |
| 2054 | if ( empty($NFW_RESHEADERS[4] ) ) { |
| 2055 | return; |
| 2056 | } |
| 2057 | |
| 2058 | // We don't send HSTS headers over HTTP |
| 2059 | if (! defined('NFW_IS_HTTPS') ) { |
| 2060 | nfw_is_https(); |
| 2061 | } |
| 2062 | if ( NFW_IS_HTTPS == false ) { |
| 2063 | return; |
| 2064 | } |
| 2065 | |
| 2066 | if ($NFW_RESHEADERS[4] == 1) { |
| 2067 | // 1 month |
| 2068 | $max_age = 'max-age=2628000'; |
| 2069 | } elseif ($NFW_RESHEADERS[4] == 2) { |
| 2070 | // 6 months |
| 2071 | $max_age = 'max-age=15768000'; |
| 2072 | } elseif ($NFW_RESHEADERS[4] == 3) { |
| 2073 | // 12 months |
| 2074 | $max_age = 'max-age=31536000'; |
| 2075 | } elseif ($NFW_RESHEADERS[4] == 4) { |
| 2076 | // Send an empty max-age to signal the UA to |
| 2077 | // cease regarding the host as a known HSTS Host |
| 2078 | $max_age = 'max-age=0'; |
| 2079 | } else { |
| 2080 | // 24 months |
| 2081 | $max_age = 'max-age=63072000'; |
| 2082 | } |
| 2083 | if (! empty( $NFW_RESHEADERS[5] ) ) { |
| 2084 | if ( $NFW_RESHEADERS[5] == 1 ) { |
| 2085 | $max_age .= '; includeSubDomains'; |
| 2086 | } elseif ( $NFW_RESHEADERS[5] == 2 ) { |
| 2087 | $max_age .= '; preload'; |
| 2088 | } else { |
| 2089 | $max_age .= '; includeSubDomains; preload'; |
| 2090 | } |
| 2091 | } |
| 2092 | header('Strict-Transport-Security: '. $max_age); |
| 2093 | } |
| 2094 | |
| 2095 | // ===================================================================== 2023-05-16 |
| 2096 | |
| 2097 | function nfw_custom_headers() { |
| 2098 | |
| 2099 | $headers = json_decode( NFW_CUSTHEADERS, true ); |
| 2100 | if (! empty( $headers ) ) { |
| 2101 | foreach( $headers as $key => $value ) { |
| 2102 | header( "$key: $value" ); |
| 2103 | } |
| 2104 | } |
| 2105 | } |
| 2106 | |
| 2107 | // ===================================================================== |
| 2108 | // EOF |
| 2109 |