| @@ -10,17 +10,17 @@ | ||
| 10 | 10 | */ |
| 11 | 11 | class P_Firewall extends P_Core { |
| 12 | 12 | |
| 13 | 13 | /** |
| 14 | - * Parse the firewall and whitelist rules and determine if it's valid. | |
| 15 | - * Then set the types with all server/client variables and launch the processor. | |
| 14 | + * Launch the firewall rule processor. | |
| 16 | 15 | * |
| 17 | 16 | * @param bool $from_main Whether or not the firewall is loaded from the main script or not. |
| 18 | 17 | * @param Patchstack $core |
| 19 | 18 | * @param bool $skip Whether or not to process and execute the rules. |
| 19 | + * @param bool $muCall Whether or not this was called from mu-plugin. | |
| 20 | 20 | * @return void |
| 21 | 21 | */ |
| 22 | - public function __construct( $from_main = false, $core = null, $skip = false ) { | |
| 22 | + public function __construct( $from_main = false, $core = null, $skip = false, $muCall = false ) { | |
| 23 | 23 | if ( ! $from_main || ! $core ) { |
| 24 | 24 | if ( $core ) { |
| 25 | 25 | parent::__construct( $core ); |
| 26 | 26 | } |
| @@ -25,9 +25,9 @@ | ||
| 25 | 25 | parent::__construct( $core ); |
| 26 | 26 | } |
| 27 | 27 | return; |
| 28 | 28 | } |
| 29 | - | |
| 29 | + | |
| 30 | 30 | parent::__construct( $core ); |
| 31 | 31 | |
| 32 | 32 | // If we only want to initialize the firewall but not execute the rules. |
| 33 | 33 | if ( $skip ) { |
| @@ -33,668 +33,110 @@ | ||
| 33 | 33 | if ( $skip ) { |
| 34 | 34 | return; |
| 35 | 35 | } |
| 36 | 36 | |
| 37 | - // Process the firewall rules. | |
| 38 | - $this->processor(); | |
| 39 | - } | |
| 40 | - | |
| 41 | - /** | |
| 42 | - * Check the custom whitelist rules defined in the backend of WordPress | |
| 43 | - * and attempt to match it with the request. | |
| 44 | - * | |
| 45 | - * @return boolean | |
| 46 | - */ | |
| 47 | - private function is_custom_whitelisted() { | |
| 48 | - $whitelist = str_replace( '<?php exit; ?>', '', get_option( 'patchstack_whitelist', '' ) ); | |
| 49 | - if ( empty( $whitelist ) ) { | |
| 50 | - return false; | |
| 51 | - } | |
| 52 | - | |
| 53 | - // Loop through all lines. | |
| 54 | - $lines = explode( "\n", $whitelist ); | |
| 55 | - $ip = $this->get_ip(); | |
| 56 | - | |
| 57 | - foreach ( $lines as $line ) { | |
| 58 | - $t = explode( ':', $line ); | |
| 59 | - | |
| 60 | - if ( count( $t ) == 2 ) { | |
| 61 | - $val = strtolower( trim( $t[1] ) ); | |
| 62 | - switch ( strtolower( $t[0] ) ) { | |
| 63 | - // IP address match. | |
| 64 | - case 'ip': | |
| 65 | - if ( $ip == $val ) { | |
| 66 | - return true; | |
| 67 | - } | |
| 68 | - break; | |
| 69 | - // Payload match. | |
| 70 | - case 'payload': | |
| 71 | - if ( count( $_POST ) > 0 && strpos( strtolower( print_r( $_POST, true ) ), $val ) !== false ) { | |
| 72 | - return true; | |
| 73 | - } | |
| 74 | - | |
| 75 | - if ( count( $_GET ) > 0 && strpos( strtolower( print_r( $_GET, true ) ), $val ) !== false ) { | |
| 76 | - return true; | |
| 77 | - } | |
| 78 | - break; | |
| 79 | - // URL match. | |
| 80 | - case 'url': | |
| 81 | - if ( strpos( strtolower( $_SERVER['REQUEST_URI'] ), $val ) !== false ) { | |
| 82 | - return true; | |
| 83 | - } | |
| 84 | - break; | |
| 85 | - } | |
| 86 | - } | |
| 87 | - } | |
| 88 | - | |
| 89 | - return false; | |
| 90 | - } | |
| 91 | - | |
| 92 | - /** | |
| 93 | - * Determine if the request should be whitelisted. | |
| 94 | - * | |
| 95 | - * @return boolean | |
| 96 | - */ | |
| 97 | - private function is_whitelisted() { | |
| 98 | - // First check if the user has custom whitelist rules configured. | |
| 99 | - if ( $this->is_custom_whitelisted() ) { | |
| 100 | - return true; | |
| 101 | - } | |
| 102 | - | |
| 103 | - // Load the whitelist. | |
| 104 | - $whitelists = get_option( 'patchstack_whitelist_rules', '' ); | |
| 105 | - if ( $whitelists == null || $whitelists == '' ) { | |
| 106 | - return false; | |
| 107 | - } | |
| 108 | - | |
| 109 | - // Parse the whitelist. | |
| 110 | - $whitelists = json_decode( str_replace( '<?php exit; ?>', '', $whitelists ), true ); | |
| 111 | - | |
| 112 | - // Grab visitor's IP address and request data. | |
| 113 | - $client_ip = $this->get_ip(); | |
| 114 | - $requests = $this->capture_request(); | |
| 115 | - | |
| 116 | - foreach ( $whitelists as $whitelist ) { | |
| 117 | - $whitelist_rule = json_decode( $whitelist['rule'] ); | |
| 118 | - $matched_rules = 0; | |
| 119 | - | |
| 120 | - // If matches on all request methods, only 1 rule match is required to whitelist. | |
| 121 | - if ( $whitelist_rule->method === 'ALL' ) { | |
| 122 | - $count_rules = 1; | |
| 123 | - } else { | |
| 124 | - if ( ! is_null( $whitelist_rule ) ) { | |
| 125 | - $count_rules = $whitelist_rule->rules; | |
| 126 | - $count_rules = $this->count_rules( $count_rules ); | |
| 127 | - } | |
| 128 | - } | |
| 129 | - | |
| 130 | - // If an IP address match is given, determine if it matches. | |
| 131 | - $ip = isset( $whitelist_rule->rules, $whitelist_rule->rules->ip_address ) ? $whitelist_rule->rules->ip_address : null; | |
| 132 | - if ( ! is_null( $ip ) ) { | |
| 133 | - if ( strpos( $ip, '*' ) !== false ) { | |
| 134 | - $whitelisted_ip = $this->plugin->ban->check_wildcard_rule( $client_ip, $ip ); | |
| 135 | - } elseif ( strpos( $ip, '-' ) !== false ) { | |
| 136 | - $whitelisted_ip = $this->plugin->ban->check_range_rule( $client_ip, $ip ); | |
| 137 | - } elseif ( strpos( $ip, '/' ) !== false ) { | |
| 138 | - $whitelisted_ip = $this->plugin->ban->check_subnet_mask_rule( $client_ip, $ip ); | |
| 139 | - } elseif ( $client_ip == $ip ) { | |
| 140 | - $whitelisted_ip = true; | |
| 141 | - } else { | |
| 142 | - $whitelisted_ip = false; | |
| 143 | - } | |
| 144 | - } else { | |
| 145 | - $whitelisted_ip = true; | |
| 146 | - } | |
| 147 | - | |
| 148 | - foreach ( $requests as $key => $request ) { | |
| 149 | - | |
| 150 | - // Treat the raw POST data string as the body contents of all values combined. | |
| 151 | - if ( $key == 'rulesRawPost' ) { | |
| 152 | - $key = 'rulesBodyAll'; | |
| 153 | - } | |
| 154 | - | |
| 155 | - if ( $whitelist_rule->method == $requests['method'] || $whitelist_rule->method == 'ALL' ) { | |
| 156 | - $test = strtolower( preg_replace( '/(?!^)[A-Z]{2,}(?=[A-Z][a-z])|[A-Z][a-z]/', '->$0', $key ) ); | |
| 157 | - $rule = array_reduce( | |
| 158 | - explode( '->', $test ), | |
| 159 | - function ( $o, $p ) { | |
| 160 | - if ( ! isset( $o->$p ) ) { | |
| 161 | - return null; | |
| 162 | - } | |
| 163 | - | |
| 164 | - return $o->$p; | |
| 165 | - }, | |
| 166 | - $whitelist_rule | |
| 167 | - ); | |
| 168 | - | |
| 169 | - if ( ! is_null( $rule ) && substr( $key, 0, 4 ) == 'rule' && $this->is_rule_match( $rule, $request ) ) { | |
| 170 | - $matched_rules++; | |
| 171 | - } | |
| 172 | - } | |
| 173 | - } | |
| 174 | - | |
| 175 | - if ( $matched_rules >= $count_rules && $whitelisted_ip ) { | |
| 176 | - return true; | |
| 177 | - } | |
| 178 | - } | |
| 179 | - | |
| 180 | - return false; | |
| 181 | - } | |
| 182 | - | |
| 183 | - /** | |
| 184 | - * Retrieve all HTTP headers that start with HTTP_. | |
| 185 | - * | |
| 186 | - * @return array | |
| 187 | - */ | |
| 188 | - private function get_headers() { | |
| 189 | - $headers = array(); | |
| 190 | - foreach ( $_SERVER as $name => $value ) { | |
| 191 | - if ( substr( $name, 0, 5 ) == 'HTTP_' ) { | |
| 192 | - $headers[ str_replace( ' ', '-', ucwords( strtolower( str_replace( '_', ' ', substr( $name, 5 ) ) ) ) ) ] = $value; | |
| 193 | - } | |
| 194 | - } | |
| 195 | - | |
| 196 | - return $headers; | |
| 197 | - } | |
| 198 | - | |
| 199 | - /** | |
| 200 | - * Retrieve information about any file uploads. | |
| 201 | - * | |
| 202 | - * @return array | |
| 203 | - */ | |
| 204 | - private function get_file_upload_data() { | |
| 205 | - if ( ! isset( $_FILES ) || ! is_array( $_FILES ) || count( $_FILES ) == 0 ) { | |
| 206 | - return ''; | |
| 207 | - } | |
| 208 | - | |
| 209 | - // Extract the information we need from $_FILES. | |
| 210 | - $return = array(); | |
| 211 | - foreach ( $_FILES as $key => $data ) { | |
| 212 | - foreach ( $data as $key2 => $data2 ) { | |
| 213 | - | |
| 214 | - // We only want the name and type. | |
| 215 | - if ( ! in_array( $key2, array( 'name', 'type' ) ) ) { | |
| 216 | - continue; | |
| 217 | - } | |
| 218 | - | |
| 219 | - if ( ! is_array( $data2 ) ) { | |
| 220 | - $return[] = $key2 . '=' . $data2; | |
| 221 | - } else { | |
| 222 | - $return[] = $key2 . '=' . @$this->multi_implode( $data2, '&' . $key2 . '=' ); | |
| 223 | - } | |
| 224 | - } | |
| 225 | - } | |
| 226 | - | |
| 227 | - return implode( '&', $return ); | |
| 228 | - } | |
| 229 | - | |
| 230 | - | |
| 231 | - /** | |
| 232 | - * Returns all request methods and parameters | |
| 233 | - * | |
| 234 | - * @return string | |
| 235 | - */ | |
| 236 | - private function capture_request() { | |
| 237 | - $data = $this->capture_keys(); | |
| 238 | - | |
| 239 | - // Get the method and URL. | |
| 240 | - $method = isset( $_SERVER['REQUEST_METHOD'] ) ? $_SERVER['REQUEST_METHOD'] : 'GET'; | |
| 241 | - $rulesUri = isset( $_SERVER['REQUEST_URI'] ) ? $_SERVER['REQUEST_URI'] : ''; | |
| 242 | - | |
| 243 | - // Store the header values in different formats. | |
| 244 | - $rulesHeadersKeys = array(); | |
| 245 | - $rulesHeadersValues = array(); | |
| 246 | - $rulesHeadersCombinations = array(); | |
| 247 | - | |
| 248 | - // Retrieve the headers. | |
| 249 | - $headers = $this->get_headers(); | |
| 250 | - $rulesHeadersAll = implode( ' ', $headers ); | |
| 251 | - foreach ( $headers as $name => $value ) { | |
| 252 | - $rulesHeadersKeys[] = $name; | |
| 253 | - $rulesHeadersValues[] = $value; | |
| 254 | - $rulesHeadersCombinations[] = $name . ': ' . $value; | |
| 255 | - } | |
| 256 | - | |
| 257 | - // Store the $_POST values in different formats. | |
| 258 | - $rulesBodyKeys = array(); | |
| 259 | - $rulesBodyValues = array(); | |
| 260 | - $rulesBodyCombinations = array(); | |
| 261 | - | |
| 262 | - // Retrieve the $_POST values. | |
| 263 | - $rulesBodyAll = urldecode( http_build_query( $data['POST'] ) ); | |
| 264 | - foreach ( $data['POST'] as $key => $value ) { | |
| 265 | - if ( is_array( $value ) ) { | |
| 266 | - $value = @$this->multi_implode( $value, ' ' ); | |
| 267 | - } | |
| 268 | - $rulesBodyKeys[] = $key; | |
| 269 | - $rulesBodyValues[] = $value; | |
| 270 | - $rulesBodyCombinations[] = $key . '=' . $value; | |
| 271 | - } | |
| 272 | - | |
| 273 | - // Store the $_GET values in different formats. | |
| 274 | - $rulesParamsKeys = array(); | |
| 275 | - $rulesParamsValues = array(); | |
| 276 | - $rulesParamsCombinations = array(); | |
| 277 | - | |
| 278 | - // Retrieve the $_GET values. | |
| 279 | - $rulesParamsAll = urldecode( http_build_query( $data['GET'] ) ); | |
| 280 | - foreach ( $data['GET'] as $key => $value ) { | |
| 281 | - if ( is_array( $value ) ) { | |
| 282 | - $value = @$this->multi_implode( $value, ' ' ); | |
| 283 | - } | |
| 284 | - $rulesParamsKeys[] = $key; | |
| 285 | - $rulesParamsValues[] = $value; | |
| 286 | - $rulesParamsCombinations[] = $key . '=' . $value; | |
| 287 | - } | |
| 288 | - | |
| 289 | - // Raw POST data. | |
| 290 | - $rulesRawPost = @file_get_contents( 'php://input' ); | |
| 291 | - | |
| 292 | - // Data about file uploads. | |
| 293 | - $rulesFile = $this->get_file_upload_data(); | |
| 294 | - | |
| 295 | - // Return each value as its own array. | |
| 296 | - return compact( | |
| 297 | - 'method', | |
| 298 | - 'rulesFile', | |
| 299 | - 'rulesRawPost', | |
| 300 | - 'rulesUri', | |
| 301 | - 'rulesHeadersAll', | |
| 302 | - 'rulesHeadersKeys', | |
| 303 | - 'rulesHeadersValues', | |
| 304 | - 'rulesHeadersCombinations', | |
| 305 | - 'rulesBodyAll', | |
| 306 | - 'rulesBodyKeys', | |
| 307 | - 'rulesBodyValues', | |
| 308 | - 'rulesBodyCombinations', | |
| 309 | - 'rulesParamsAll', | |
| 310 | - 'rulesParamsKeys', | |
| 311 | - 'rulesParamsValues', | |
| 312 | - 'rulesParamsCombinations' | |
| 37 | + // Load the extension. | |
| 38 | + require_once __DIR__ . '/../lib/patchstack/vendor/autoload.php'; | |
| 39 | + $extension = new Patchstack\Extensions\WordPress\Extension( | |
| 40 | + [ | |
| 41 | + 'patchstack_basic_firewall_roles' => $this->get_option( 'patchstack_basic_firewall_roles', [ 'administrator', 'editor', 'author' ] ), | |
| 42 | + 'patchstack_custom_whitelist_rules' => get_option( 'patchstack_custom_whitelist_rules', '' ) | |
| 43 | + ], | |
| 44 | + $this | |
| 313 | 45 | ); |
| 314 | - } | |
| 315 | 46 | |
| 316 | - /** | |
| 317 | - * Capture the keys of the request. | |
| 318 | - * | |
| 319 | - * @return array | |
| 320 | - */ | |
| 321 | - private function capture_keys() { | |
| 322 | - // Data we want to go through. | |
| 323 | - $data = array( | |
| 324 | - 'POST' => isset( $_POST ) ? $_POST : array(), | |
| 325 | - 'GET' => isset( $_GET ) ? $_GET : array(), | |
| 47 | + // Initiate the firewall processor with our settings. | |
| 48 | + $firewall = new Patchstack\Processor( | |
| 49 | + $extension, | |
| 50 | + json_decode(get_option('patchstack_firewall_rules_v3', '[]'), true), | |
| 51 | + json_decode(get_option('patchstack_whitelist_rules_v3', '[]'), true), | |
| 52 | + [ | |
| 53 | + 'autoblockAttempts' => $this->get_option( 'patchstack_autoblock_attempts', 10 ), | |
| 54 | + 'autoblockMinutes' => $this->get_option( 'patchstack_autoblock_minutes', 30 ), | |
| 55 | + 'autoblockTime' => $this->get_option( 'patchstack_autoblock_blocktime', 60 ), | |
| 56 | + 'whitelistKeysRules' => json_decode( get_option( 'patchstack_whitelist_keys_rules', '[]' ), true ), | |
| 57 | + 'mustUsePluginCall' => $muCall | |
| 58 | + ], | |
| 59 | + json_decode(get_option('patchstack_firewall_rules', '[]'), true), | |
| 60 | + json_decode(get_option('patchstack_whitelist_rules', '[]'), true) | |
| 326 | 61 | ); |
| 327 | 62 | |
| 328 | - // Determine if there are any keys we should remove from the data set. | |
| 329 | - if ( get_option( 'patchstack_whitelist_keys_rules', '' ) == '' ) { | |
| 330 | - return $data; | |
| 331 | - } | |
| 332 | - | |
| 333 | - // Must be valid JSON and decodes to at least 2 primary data arrays. | |
| 334 | - $keys = json_decode( get_option( 'patchstack_whitelist_keys_rules' ), true ); | |
| 335 | - if ( ! $keys || ! is_array( $keys ) || $keys && count( $keys ) < 2 ) { | |
| 336 | - return $data; | |
| 337 | - } | |
| 338 | - | |
| 339 | - // Remove the keys where necessary, go through all data types (GET, POST). | |
| 340 | - foreach ( $keys as $type => $entries ) { | |
| 341 | - | |
| 342 | - // Go through all whitelisted actions. | |
| 343 | - foreach ( $entries as $entry ) { | |
| 344 | - $t = explode( '.', $entry ); | |
| 345 | - | |
| 346 | - // For non-multidimensional array checks. | |
| 347 | - if ( count( $t ) == 1 ) { | |
| 348 | - // If the value itself exists. | |
| 349 | - if ( isset( $data[ $type ][ $t[0] ] ) ) { | |
| 350 | - unset( $data[ $type ][ $t[0] ] ); | |
| 351 | - } | |
| 352 | - | |
| 353 | - // For pattern checking. | |
| 354 | - if ( strpos( $t[0], '*' ) !== false ) { | |
| 355 | - $star = explode( '*', $t[0] ); | |
| 356 | - | |
| 357 | - // Loop through all $_POST, $_GET values. | |
| 358 | - foreach ( $data as $method => $values ) { | |
| 359 | - foreach ( $values as $key => $value ) { | |
| 360 | - if ( ! is_array( $value ) && strpos( $key, $star[0] ) !== false ) { | |
| 361 | - unset( $data[ $method ][ $key ] ); | |
| 362 | - } | |
| 363 | - } | |
| 364 | - } | |
| 365 | - } | |
| 366 | - continue; | |
| 367 | - } | |
| 368 | - | |
| 369 | - // For multidimensional array checks. | |
| 370 | - $end =& $data[ $type ]; | |
| 371 | - $skip = false; | |
| 372 | - foreach ( $t as $var ) { | |
| 373 | - if ( ! isset( $end[ $var ] ) ) { | |
| 374 | - $skip = true; | |
| 375 | - break; | |
| 376 | - } | |
| 377 | - $end =& $end[ $var ]; | |
| 378 | - } | |
| 379 | - | |
| 380 | - // Since we cannot unset it due to it being a reference variable, | |
| 381 | - // we just set it to an empty string instead. | |
| 382 | - if ( ! $skip ) { | |
| 383 | - $end = ''; | |
| 384 | - } | |
| 385 | - } | |
| 386 | - } | |
| 387 | - | |
| 388 | - return $data; | |
| 63 | + // Launch the firewall. | |
| 64 | + $firewall->launch(); | |
| 389 | 65 | } |
| 390 | 66 | |
| 391 | 67 | /** |
| 392 | - * Implode array recursively. | |
| 68 | + * Determine if the user is authenticated and in the list of whitelisted roles. | |
| 393 | 69 | * |
| 394 | - * @param $array | |
| 395 | - * @param $glue | |
| 396 | - * @return bool|string | |
| 397 | - */ | |
| 398 | - private function multi_implode( $array, $glue ) { | |
| 399 | - $ret = ''; | |
| 400 | - | |
| 401 | - foreach ( $array as $item ) { | |
| 402 | - if ( is_array( $item ) ) { | |
| 403 | - $ret .= $this->multi_implode( $item, $glue ) . $glue; | |
| 404 | - } else { | |
| 405 | - $ret .= $item . $glue; | |
| 406 | - } | |
| 407 | - } | |
| 408 | - | |
| 409 | - return substr( $ret, 0, 0 - strlen( $glue ) ); | |
| 410 | - } | |
| 411 | - | |
| 412 | - /** | |
| 413 | - * Determine if the request matches the given firewall or whitelist rule. | |
| 414 | - * | |
| 415 | - * @param string $rule | |
| 416 | - * @param string|array $request | |
| 417 | 70 | * @return bool |
| 418 | 71 | */ |
| 419 | - private function is_rule_match( $rule, $request ) { | |
| 420 | - $is_matched = false; | |
| 421 | - if ( is_array( $request ) ) { | |
| 422 | - foreach ( $request as $key => $value ) { | |
| 423 | - $is_matched = $this->is_rule_match( $rule, $value ); | |
| 424 | - if ( $is_matched ) { | |
| 425 | - return $is_matched; | |
| 426 | - } | |
| 427 | - } | |
| 428 | - } else { | |
| 429 | - return preg_match( $rule, urldecode( $request ) ); | |
| 72 | + public function is_authenticated() { | |
| 73 | + if ( ! is_user_logged_in() ) { | |
| 74 | + return false; | |
| 430 | 75 | } |
| 431 | 76 | |
| 432 | - return $is_matched; | |
| 433 | - } | |
| 434 | - | |
| 435 | - /** | |
| 436 | - * Count the number of rules. | |
| 437 | - * | |
| 438 | - * @param array $array | |
| 439 | - * @return integer | |
| 440 | - */ | |
| 441 | - private function count_rules( $array ) { | |
| 442 | - $counter = 0; | |
| 443 | - if ( is_object( $array ) ) { | |
| 444 | - $array = (array) $array; | |
| 77 | + // Get the whitelisted roles. | |
| 78 | + $roles = $this->get_option( 'patchstack_basic_firewall_roles', [ 'administrator', 'editor', 'author' ] ); | |
| 79 | + if ( ! is_array( $roles ) ) { | |
| 80 | + return false; | |
| 445 | 81 | } |
| 446 | - | |
| 447 | - if ( $array['uri'] ) { | |
| 448 | - $counter++; | |
| 82 | + | |
| 83 | + // Special scenario for super admins on a multisite environment. | |
| 84 | + if ( in_array( 'administrator', $roles ) && is_multisite() && is_super_admin() ) { | |
| 85 | + return true; | |
| 449 | 86 | } |
| 450 | 87 | |
| 451 | - foreach ( array( 'body', 'params', 'headers' ) as $type ) { | |
| 452 | - foreach ( $array[ $type ] as $key => $value ) { | |
| 453 | - if ( ! is_null( $value ) ) { | |
| 454 | - $counter++; | |
| 455 | - } | |
| 456 | - } | |
| 88 | + // Get the roles of the user. | |
| 89 | + $user = wp_get_current_user(); | |
| 90 | + if ( ! isset( $user->roles ) || count( (array) $user->roles ) == 0 ) { | |
| 91 | + return false; | |
| 457 | 92 | } |
| 458 | 93 | |
| 459 | - return $counter; | |
| 94 | + // Is the user in the whitelist roles list? | |
| 95 | + $role_count = array_intersect( $user->roles, $roles ); | |
| 96 | + return count( $role_count ) != 0; | |
| 460 | 97 | } |
| 461 | 98 | |
| 99 | + | |
| 462 | 100 | /** |
| 463 | - * Runs the firewall rules processor. | |
| 101 | + * Display error page. | |
| 464 | 102 | * |
| 103 | + * @param integer $fid | |
| 465 | 104 | * @return void |
| 466 | 105 | */ |
| 467 | - private function processor() { | |
| 468 | - // Load the firewall rules. | |
| 469 | - $rules = json_decode( get_option( 'patchstack_firewall_rules', '' ), true ); | |
| 470 | - if ( $rules == '' || is_null( $rules ) ) { | |
| 471 | - return; | |
| 106 | + public function display_error_page( $fid = 1 ) { | |
| 107 | + if ( $fid != 22 && $fid != 23 && $fid != 24 && $fid != 'login' ) { | |
| 108 | + $this->log_request( $fid ); | |
| 472 | 109 | } |
| 473 | 110 | |
| 474 | - // Determine if the user is temporarily blocked from the site. | |
| 475 | - if ( $this->is_auto_ip_blocked() > $this->get_option( 'patchstack_autoblock_attempts', 10 ) && ! $this->is_authenticated() ) { | |
| 476 | - $this->display_error_page( 22 ); | |
| 111 | + // Supported by a number of popular caching plugins. | |
| 112 | + if ( ! defined( 'DONOTCACHEPAGE' ) ) { | |
| 113 | + define( 'DONOTCACHEPAGE', true ); | |
| 477 | 114 | } |
| 478 | 115 | |
| 479 | - // Check for whitelist. | |
| 480 | - $is_whitelisted = $this->is_whitelisted(); | |
| 116 | + // Send forbidden headers and no-caching headers as well. | |
| 117 | + status_header(403); | |
| 118 | + send_nosniff_header(); | |
| 119 | + nocache_headers(); | |
| 481 | 120 | |
| 482 | - // Obtain the IP address and request data. | |
| 483 | - $client_ip = $this->get_ip(); | |
| 484 | - $requests = $this->capture_request(); | |
| 485 | - | |
| 486 | - // Iterate through all root objects. | |
| 487 | - foreach ( $rules as $firewall_rule ) { | |
| 488 | - $blocked_count = 0; | |
| 489 | - $firewall_rule['bypass_whitelist'] = isset( $firewall_rule['bypass_whitelist'] ) ? $firewall_rule['bypass_whitelist'] : false; | |
| 490 | - | |
| 491 | - // Do we need to skip the whitelist for a particular rule? | |
| 492 | - if ( isset( $firewall_rule['bypass_whitelist'] ) && ! $firewall_rule['bypass_whitelist'] && $is_whitelisted ) { | |
| 493 | - continue; | |
| 494 | - } | |
| 495 | - | |
| 496 | - $rule_terms = json_decode( $firewall_rule['rule'] ); | |
| 497 | - | |
| 498 | - // Determine if we should match the IP address. | |
| 499 | - $ip = isset( $rule_terms->rules->ip_address ) ? $rule_terms->rules->ip_address : null; | |
| 500 | - if ( ! is_null( $ip ) ) { | |
| 501 | - $matched_ip = false; | |
| 502 | - if ( strpos( $ip, '*' ) !== false ) { | |
| 503 | - $matched_ip = $this->plugin->ban->check_wildcard_rule( $client_ip, $ip ); | |
| 504 | - } elseif ( strpos( $ip, '-' ) !== false ) { | |
| 505 | - $matched_ip = $this->plugin->ban->check_range_rule( $client_ip, $ip ); | |
| 506 | - } elseif ( strpos( $ip, '/' ) !== false ) { | |
| 507 | - $matched_ip = $this->plugin->ban->check_subnet_mask_rule( $client_ip, $ip ); | |
| 508 | - } elseif ( $client_ip == $ip ) { | |
| 509 | - $matched_ip = true; | |
| 510 | - } | |
| 511 | - | |
| 512 | - if ( ! $matched_ip ) { | |
| 513 | - continue; | |
| 514 | - } | |
| 515 | - } | |
| 516 | - | |
| 517 | - // If matches on all request methods, only 1 rule match is required to block | |
| 518 | - if ( $rule_terms->method === 'ALL' ) { | |
| 519 | - $count_rules = 1; | |
| 520 | - } else { | |
| 521 | - $count_rules = json_decode( json_encode( $rule_terms->rules ), true ); | |
| 522 | - $count_rules = $this->count_rules( $count_rules ); | |
| 523 | - } | |
| 524 | - | |
| 525 | - // Loop through all request data that we captured. | |
| 526 | - foreach ( $requests as $key => $request ) { | |
| 527 | - | |
| 528 | - // Treat the raw POST data string as the body contents of all values combined. | |
| 529 | - if ( $key == 'rulesRawPost' ) { | |
| 530 | - $key = 'rulesBodyAll'; | |
| 531 | - } | |
| 532 | - | |
| 533 | - // Determine if the requesting method matches. | |
| 534 | - if ( $rule_terms->method == $requests['method'] || $rule_terms->method == 'ALL' || $rule_terms->method == 'GET' || ( $rule_terms->method == 'FILES' && $this->is_file_upload() ) ) { | |
| 535 | - $test = strtolower( preg_replace( '/(?!^)[A-Z]{2,}(?=[A-Z][a-z])|[A-Z][a-z]/', '->$0', $key ) ); | |
| 536 | - $exp = explode( '->', $test ); | |
| 537 | - | |
| 538 | - // Determine if a rule exists for this request. | |
| 539 | - $rule = array_reduce( | |
| 540 | - $exp, | |
| 541 | - function ( $o, $p ) { | |
| 542 | - if ( ! isset( $o->$p ) ) { | |
| 543 | - return null; | |
| 544 | - } | |
| 545 | - | |
| 546 | - return $o->$p; | |
| 547 | - }, | |
| 548 | - $rule_terms | |
| 549 | - ); | |
| 550 | - | |
| 551 | - // Determine if the rule matches the request. | |
| 552 | - if ( ! is_null( $rule ) && substr( $key, 0, 4 ) == 'rule' && $this->is_rule_match( $rule, $request ) ) { | |
| 553 | - $blocked_count++; | |
| 554 | - } | |
| 555 | - } | |
| 556 | - } | |
| 557 | - | |
| 558 | - // Determine if the user should be blocked. | |
| 559 | - if ( $blocked_count >= $count_rules ) { | |
| 560 | - if ( $rule_terms->type == 'BLOCK' ) { | |
| 561 | - $this->block_user( $firewall_rule['id'], (bool) $firewall_rule['bypass_whitelist'] ); | |
| 562 | - } elseif ( $rule_terms->type == 'LOG' ) { | |
| 563 | - $this->log_user( $firewall_rule['id'] ); | |
| 564 | - } elseif ( $rule_terms->type == 'REDIRECT' ) { | |
| 565 | - $this->redirect_user( $firewall_rule['id'], $rule_terms->type_params ); | |
| 566 | - } | |
| 567 | - } | |
| 568 | - } | |
| 569 | - } | |
| 570 | - | |
| 571 | - /** | |
| 572 | - * Determine if the current request is a file upload. | |
| 573 | - * | |
| 574 | - * @return boolean | |
| 575 | - */ | |
| 576 | - private function is_file_upload() { | |
| 577 | - return isset( $_FILES ) && count( $_FILES ) > 0; | |
| 578 | - } | |
| 579 | - | |
| 580 | - /** | |
| 581 | - * Automatically block the user if there are many blocked requests in a short period of time. | |
| 582 | - * | |
| 583 | - * @return integer | |
| 584 | - */ | |
| 585 | - public function is_auto_ip_blocked() { | |
| 586 | - // Calculate block time. | |
| 587 | - $minutes = (int) $this->get_option( 'patchstack_autoblock_minutes', 30 ); | |
| 588 | - $timeout = (int) $this->get_option( 'patchstack_autoblock_blocktime', 60 ); | |
| 589 | - if ( empty( $minutes ) || empty( $timeout ) ) { | |
| 590 | - $time = 30 + 60; | |
| 121 | + if ( $fid == 'login' ) { | |
| 122 | + require_once dirname( __FILE__ ) . '/views/access-denied-login.php'; | |
| 591 | 123 | } else { |
| 592 | - $time = $minutes + $timeout; | |
| 124 | + require_once dirname( __FILE__ ) . '/views/access-denied.php'; | |
| 593 | 125 | } |
| 594 | - | |
| 595 | - // Determine if the user should be blocked. | |
| 596 | - global $wpdb; | |
| 597 | - $results = $wpdb->get_results( | |
| 598 | - $wpdb->prepare( 'SELECT COUNT(*) as numIps FROM ' . $wpdb->prefix . "patchstack_firewall_log WHERE block_type = 'BLOCK' AND apply_ban = 1 AND ip = '%s' AND log_date >= ('" . current_time( 'mysql' ) . "' - INTERVAL %d MINUTE)", array( $this->get_ip(), $time ) ), | |
| 599 | - OBJECT | |
| 600 | - ); | |
| 601 | - | |
| 602 | - if ( ! isset( $results, $results[0], $results[0]->numIps ) ) { | |
| 603 | - return 0; | |
| 604 | - } | |
| 605 | - return $results[0]->numIps; | |
| 606 | - } | |
| 607 | - | |
| 608 | - /** | |
| 609 | - * Block the user, and log, do whatever is necessary. | |
| 610 | - * | |
| 611 | - * @param string $rule | |
| 612 | - * @param bool $bypass | |
| 613 | - * @return void | |
| 614 | - */ | |
| 615 | - private function block_user( $rule, $bypass = false ) { | |
| 616 | - if ( ! $this->is_authenticated( $bypass ) ) { | |
| 617 | - $this->display_error_page( '55' . intval( $rule ) ); | |
| 618 | - } | |
| 619 | - } | |
| 620 | - | |
| 621 | - /** | |
| 622 | - * Log the user action. | |
| 623 | - * | |
| 624 | - * @param string $rule | |
| 625 | - * @return void | |
| 626 | - */ | |
| 627 | - private function log_user( $rule ) { | |
| 628 | - $this->log_hacker( $rule, '', 'LOG' ); | |
| 629 | - } | |
| 630 | - | |
| 631 | - /** | |
| 632 | - * Log the user action and redirect. | |
| 633 | - * | |
| 634 | - * @param integer $rule_id | |
| 635 | - * @param string $redirect | |
| 636 | - * @return void | |
| 637 | - */ | |
| 638 | - private function redirect_user( $rule_id, $redirect ) { | |
| 639 | - $this->log_hacker( $rule_id, '', 'REDIRECT' ); | |
| 640 | - | |
| 641 | - // Don't redirect an invalid URL. | |
| 642 | - if ( ! $redirect || stripos( $redirect, 'http' ) === false ) { | |
| 643 | - return; | |
| 644 | - } | |
| 645 | - | |
| 646 | - ob_start(); | |
| 647 | - header( 'Location: ' . $redirect ); | |
| 648 | - ob_end_flush(); | |
| 126 | + | |
| 649 | 127 | exit; |
| 650 | 128 | } |
| 651 | 129 | |
| 652 | 130 | /** |
| 653 | - * Determine if the user is authenticated and in the list of whitelisted roles. | |
| 654 | - * | |
| 655 | - * @param bool $bypass | |
| 656 | - * @return bool | |
| 657 | - */ | |
| 658 | - public function is_authenticated( $bypass = false ) { | |
| 659 | - if ( $bypass || ! is_user_logged_in() ) { | |
| 660 | - return false; | |
| 661 | - } | |
| 662 | - | |
| 663 | - // Get the whitelisted roles. | |
| 664 | - $roles = $this->get_option( 'patchstack_basic_firewall_roles', array( 'administrator', 'editor', 'author' ) ); | |
| 665 | - if ( ! is_array ( $roles ) ) { | |
| 666 | - return false; | |
| 667 | - } | |
| 668 | - | |
| 669 | - // Special scenario for super admins on a multisite environment. | |
| 670 | - if ( in_array( 'administrator', $roles ) && is_multisite() && is_super_admin() ) { | |
| 671 | - return true; | |
| 672 | - } | |
| 673 | - | |
| 674 | - // User is logged in, determine the role. | |
| 675 | - $user = wp_get_current_user(); | |
| 676 | - if ( ! isset( $user->roles ) || count( (array) $user->roles ) == 0 ) { | |
| 677 | - return false; | |
| 678 | - } | |
| 679 | - | |
| 680 | - // Is the user in the whitelist roles list? | |
| 681 | - $role_count = array_intersect( $user->roles, $roles ); | |
| 682 | - return count( $role_count ) != 0; | |
| 683 | - } | |
| 684 | - | |
| 685 | - /** | |
| 686 | 131 | * Log the blocked request. |
| 687 | - * | |
| 688 | - * @param integer $fid firewall | |
| 689 | - * @param array $query_vars | |
| 690 | - * @param string $block_type | |
| 691 | - * @param array $block_params | |
| 132 | + * | |
| 133 | + * @param int $fid | |
| 692 | 134 | * @return void |
| 693 | 135 | */ |
| 694 | - private function log_hacker( $fid = 1, $post_data = '', $block_type = 'BLOCK' ) { | |
| 136 | + private function log_request( $fid = 1 ) { | |
| 695 | 137 | global $wpdb; |
| 696 | - if ( ! $wpdb || $fid == 22 || $fid == 23 ) { | |
| 138 | + if ( ! $wpdb || $fid == 22 || $fid == 23 || $fid == 24 || $fid == 'login' ) { | |
| 697 | 139 | return; |
| 698 | 140 | } |
| 699 | 141 | |
| 700 | 142 | // Insert into the logs. |
| @@ -706,47 +148,10 @@ | ||
| 706 | 148 | 'user_agent' => isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : '', |
| 707 | 149 | 'method' => isset( $_SERVER['REQUEST_METHOD'] ) ? $_SERVER['REQUEST_METHOD'] : '', |
| 708 | 150 | 'fid' => $fid, |
| 709 | 151 | 'flag' => '', |
| 710 | - 'post_data' => $post_data != '' ? json_encode( $post_data ) : $this->get_post_data(), | |
| 711 | - 'block_type' => $block_type, | |
| 152 | + 'post_data' => '', | |
| 153 | + 'block_type' => 'BLOCK', | |
| 712 | 154 | ) |
| 713 | 155 | ); |
| 714 | - } | |
| 715 | - | |
| 716 | - /** | |
| 717 | - * Get POST data. | |
| 718 | - * | |
| 719 | - * @return string|NULL | |
| 720 | - */ | |
| 721 | - private function get_post_data() { | |
| 722 | - if ( ! isset( $_SERVER['REQUEST_METHOD'] ) || $_SERVER['REQUEST_METHOD'] != 'POST' ) { | |
| 723 | - return null; | |
| 724 | - } | |
| 725 | - | |
| 726 | - return json_encode( $_POST ); | |
| 727 | - } | |
| 728 | - | |
| 729 | - /** | |
| 730 | - * Display error page. | |
| 731 | - * | |
| 732 | - * @param integer $fid | |
| 733 | - * @return void | |
| 734 | - */ | |
| 735 | - public function display_error_page( $fid = 1 ) { | |
| 736 | - if ( $fid != 22 && $fid != 23 && $fid != 'login' ) { | |
| 737 | - $this->log_hacker( $fid ); | |
| 738 | - } | |
| 739 | - | |
| 740 | - status_header(403); | |
| 741 | - send_nosniff_header(); | |
| 742 | - nocache_headers(); | |
| 743 | - | |
| 744 | - if ($fid == 'login' ) { | |
| 745 | - require_once dirname( __FILE__ ) . '/views/access-denied-login.php'; | |
| 746 | - } else { | |
| 747 | - require_once dirname( __FILE__ ) . '/views/access-denied.php'; | |
| 748 | - } | |
| 749 | - | |
| 750 | - exit; | |
| 751 | 156 | } |
| 752 | 157 | } |
