Manager.php
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * ====================================================================== |
| 5 | * LICENSE: This file is subject to the terms and conditions defined in * |
| 6 | * file 'license.txt', which is part of this source code package. * |
| 7 | * ====================================================================== |
| 8 | */ |
| 9 | |
| 10 | /** |
| 11 | * AAM policy manager for a specific subject |
| 12 | * |
| 13 | * @since 6.9.25 https://github.com/aamplugin/advanced-access-manager/issues/353 |
| 14 | * https://github.com/aamplugin/advanced-access-manager/issues/355 |
| 15 | * @since 6.9.24 https://github.com/aamplugin/advanced-access-manager/issues/351 |
| 16 | * @since 5.5.4 https://github.com/aamplugin/advanced-access-manager/issues/128 |
| 17 | * @since 6.5.3 https://github.com/aamplugin/advanced-access-manager/issues/122 |
| 18 | * https://github.com/aamplugin/advanced-access-manager/issues/124 |
| 19 | * @since 6.4.0 Supporting Param's "Value" to be an array |
| 20 | * @since 6.3.1 Fixed bug where draft policies get applied to assignees |
| 21 | * @since 6.2.1 Added support for the POLICY_META token |
| 22 | * @since 6.2.0 Fetched the way access policies are fetched |
| 23 | * @since 6.1.0 Implemented `=>` operator. Improved inheritance mechanism |
| 24 | * @since 6.0.4 Potential bug fix with improperly merged Param option:* values |
| 25 | * @since 6.0.0 Initial implementation of the class |
| 26 | * |
| 27 | * @package AAM |
| 28 | * @version 6.9.25 |
| 29 | */ |
| 30 | class AAM_Core_Policy_Manager |
| 31 | { |
| 32 | |
| 33 | /** |
| 34 | * Policy core object |
| 35 | * |
| 36 | * @var AAM_Core_Object_Policy |
| 37 | * |
| 38 | * @access protected |
| 39 | * @version 6.0.0 |
| 40 | */ |
| 41 | protected $object; |
| 42 | |
| 43 | /** |
| 44 | * Parsed policy tree |
| 45 | * |
| 46 | * @var array |
| 47 | * |
| 48 | * @access protected |
| 49 | * @version 6.0.0 |
| 50 | */ |
| 51 | protected $tree = array( |
| 52 | 'Statement' => array(), |
| 53 | 'Param' => array() |
| 54 | ); |
| 55 | |
| 56 | /** |
| 57 | * Effect stemming map |
| 58 | * |
| 59 | * @var array |
| 60 | * |
| 61 | * @access private |
| 62 | * @version 6.9.24 |
| 63 | */ |
| 64 | private $_effects = array(); |
| 65 | |
| 66 | /** |
| 67 | * Constructor |
| 68 | * |
| 69 | * @param AAM_Core_Subject $subject |
| 70 | * @param boolean $skip_inheritance |
| 71 | * |
| 72 | * @access protected |
| 73 | * |
| 74 | * @since 6.1.0 Added new `$skip_inheritance` mandatory argument |
| 75 | * @since 6.0.0 Initial implementation of the method |
| 76 | * |
| 77 | * @return void |
| 78 | * @version 6.1.0 |
| 79 | */ |
| 80 | public function __construct(AAM_Core_Subject $subject, $skip_inheritance) |
| 81 | { |
| 82 | $this->object = $subject->getObject( |
| 83 | AAM_Core_Object_Policy::OBJECT_TYPE, null, $skip_inheritance |
| 84 | ); |
| 85 | |
| 86 | $this->_effects = apply_filters('aam_access_policy_effects_filter', array( |
| 87 | 'allowed' => 'allow', |
| 88 | 'denied' => 'deny', |
| 89 | )); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Parse all attached policies into the tree |
| 94 | * |
| 95 | * @return void |
| 96 | * |
| 97 | * @since 6.5.3 https://github.com/aamplugin/advanced-access-manager/issues/124 |
| 98 | * @since 6.4.1 Changed the way updatePolicyTree is invoked |
| 99 | * @since 6.3.1 Fixed bug https://github.com/aamplugin/advanced-access-manager/issues/49 |
| 100 | * @since 6.2.0 Changed the way access policies are fetched |
| 101 | * @since 6.0.0 Initial implementation of the method |
| 102 | * |
| 103 | * @access public |
| 104 | * @version 6.5.3 |
| 105 | */ |
| 106 | public function initialize() |
| 107 | { |
| 108 | // Get the list of all policies that are attached to the subject |
| 109 | $ids = array_filter($this->object->getOption(), function ($attached) { |
| 110 | return !empty($attached); |
| 111 | }); |
| 112 | |
| 113 | // If there is at least one policy attached and it is published, then |
| 114 | // parse into the tree |
| 115 | if (count($ids)) { |
| 116 | $policies = $this->fetchPolicies(array( |
| 117 | 'post_status' => array('publish'), |
| 118 | 'include' => array_keys($ids) |
| 119 | )); |
| 120 | |
| 121 | foreach ($policies as $policy) { |
| 122 | $this->updatePolicyTree($this->parsePolicy($policy)); |
| 123 | } |
| 124 | |
| 125 | $this->_cleanupTree($this->tree['Statement']); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Fetch public policies by IDs |
| 131 | * |
| 132 | * @param array $ids |
| 133 | * |
| 134 | * @return array |
| 135 | * |
| 136 | * @since 6.2.0 Changed the way access policies are fetched to support multisite |
| 137 | * network setup |
| 138 | * @since 6.0.0 Initial implementation of the method |
| 139 | * |
| 140 | * @access protected |
| 141 | * @version 6.2.0 |
| 142 | */ |
| 143 | public function fetchPolicies($args = array()) |
| 144 | { |
| 145 | do_action('aam_pre_policy_fetch_action'); |
| 146 | |
| 147 | $posts = get_posts(wp_parse_args($args, array( |
| 148 | 'post_status' => array('publish', 'draft', 'pending'), |
| 149 | 'suppress_filters' => true, |
| 150 | 'post_type' => AAM_Service_AccessPolicy::POLICY_CPT, |
| 151 | 'nopaging' => true |
| 152 | ))); |
| 153 | |
| 154 | do_action('aam_post_policy_fetch_action'); |
| 155 | |
| 156 | return $posts; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Evaluate unknown method |
| 161 | * |
| 162 | * Tries to process methods like isAllowed or isDeniedTo. This method recognizes |
| 163 | * and executes the following methods /^(is)([a-z]+)(To)?$/ |
| 164 | * |
| 165 | * @param string $name |
| 166 | * @param array $args |
| 167 | * |
| 168 | * @return boolean|null |
| 169 | * |
| 170 | * @since 6.9.25 https://github.com/aamplugin/advanced-access-manager/issues/353 |
| 171 | * @since 6.9.24 Initial implementation of the method |
| 172 | * |
| 173 | * @access public |
| 174 | * @version 6.9.25 |
| 175 | */ |
| 176 | public function __call($name, $args) |
| 177 | { |
| 178 | $result = null; |
| 179 | |
| 180 | // We are calling method like isAllowed, isAttached or isDeniedTo |
| 181 | if (strpos($name, 'is') === 0) { |
| 182 | $resource = array_shift($args); |
| 183 | |
| 184 | if (strpos($name, 'To') === (strlen($name) - 2)) { |
| 185 | $effect = substr($name, 2, -2); |
| 186 | $action = array_shift($args); |
| 187 | } else { |
| 188 | $effect = substr($name, 2); |
| 189 | $action = null; |
| 190 | } |
| 191 | |
| 192 | $context_args = array_shift($args); |
| 193 | |
| 194 | // Method overload. If the next argument is boolean, then this indicates |
| 195 | // the $default response. Otherwise, the $default is null and whatever is |
| 196 | // in the $context_args is considered to be actual inline args |
| 197 | if (is_bool($context_args)) { |
| 198 | $default = $context_args; |
| 199 | $context_args = array_shift($args); |
| 200 | } else { |
| 201 | $default = null; |
| 202 | } |
| 203 | |
| 204 | $result = $this->is( |
| 205 | $resource, |
| 206 | $this->_stemEffect($effect), |
| 207 | $action, |
| 208 | $default, |
| 209 | is_array($context_args) ? $context_args : array() |
| 210 | ); |
| 211 | } |
| 212 | |
| 213 | return $result; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Get policy parameter |
| 218 | * |
| 219 | * @param string $name |
| 220 | * @param array $args |
| 221 | * |
| 222 | * @return mixed |
| 223 | * |
| 224 | * @since 6.4.1 https://github.com/aamplugin/advanced-access-manager/issues/84 |
| 225 | * @since 6.4.0 Supporting "Value" to be an array |
| 226 | * @since 6.0.0 Initial implementation of the method |
| 227 | * |
| 228 | * @access public |
| 229 | * @version 6.4.1 |
| 230 | */ |
| 231 | public function getParam($id, $args = array()) |
| 232 | { |
| 233 | $value = null; |
| 234 | |
| 235 | if (isset($this->tree['Param'][$id])) { |
| 236 | $param = $this->getBestCandidate($this->tree['Param'][$id], $args); |
| 237 | $value = is_null($param) ? null : $param['Value']; |
| 238 | } |
| 239 | |
| 240 | return $value; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Find all params that match provided search criteria |
| 245 | * |
| 246 | * @param string|array $s |
| 247 | * @param array $args |
| 248 | * |
| 249 | * @return array |
| 250 | * |
| 251 | * @since 6.4.1 https://github.com/aamplugin/advanced-access-manager/issues/84 |
| 252 | * @since 6.0.0 Initial implementation of the method |
| 253 | * |
| 254 | * @access public |
| 255 | * @version 6.4.1 |
| 256 | */ |
| 257 | public function getParams($s, $args = array()) |
| 258 | { |
| 259 | if (is_array($s)) { |
| 260 | $regex = '/^(' . implode('|', $s) . ')$/i'; |
| 261 | } else { |
| 262 | $regex = "/^{$s}$/i"; |
| 263 | } |
| 264 | |
| 265 | $params = array(); |
| 266 | |
| 267 | foreach (array_keys($this->tree['Param']) as $id) { |
| 268 | if (preg_match($regex, $id)) { |
| 269 | $params[$id] = $this->getBestCandidate( |
| 270 | $this->tree['Param'][$id], $args |
| 271 | ); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | return $params; |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Find all statements that match provided resource of list of resources |
| 280 | * |
| 281 | * @param string|array $s |
| 282 | * @param array $args |
| 283 | * |
| 284 | * @return array |
| 285 | * |
| 286 | * @since 6.5.3 https://github.com/aamplugin/advanced-access-manager/issues/124 |
| 287 | * @since 6.4.1 https://github.com/aamplugin/advanced-access-manager/issues/84 |
| 288 | * @since 6.0.0 Initial implementation of the method |
| 289 | * |
| 290 | * @access public |
| 291 | * @version 6.5.3 |
| 292 | */ |
| 293 | public function getResources($s, $args = array()) |
| 294 | { |
| 295 | if (is_array($s)) { |
| 296 | $regex = '/^(' . implode('|', $s) . '):/i'; |
| 297 | } else { |
| 298 | $regex = "/^{$s}:/i"; |
| 299 | } |
| 300 | |
| 301 | $statements = array(); |
| 302 | |
| 303 | foreach ($this->tree['Statement'] as $key => $stms) { |
| 304 | if (preg_match($regex, $key)) { |
| 305 | $stm = $this->getBestCandidate($stms, $args); |
| 306 | |
| 307 | if (!is_null($stm)) { |
| 308 | // Remove the resource type to keep it clean |
| 309 | $statements[preg_replace($regex, '', $key)] = $stm; |
| 310 | } |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | return $statements; |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Hook into WP core function to override WP options |
| 319 | * |
| 320 | * @param mixed $res |
| 321 | * @param string $option |
| 322 | * |
| 323 | * @return mixed |
| 324 | * |
| 325 | * @since 6.0.4 Fixed the potential bug with improperly merged options when Value |
| 326 | * is defined as multi-dimensional array |
| 327 | * @since 6.0.0 Initial implementation of the method |
| 328 | * |
| 329 | * @access public |
| 330 | * @version 6.0.4 |
| 331 | */ |
| 332 | public function getOption($res, $option) |
| 333 | { |
| 334 | if (isset($this->tree['Param']["option:{$option}"])) { |
| 335 | $param = $this->getBestCandidate( |
| 336 | $this->tree['Param']["option:{$option}"] |
| 337 | ); |
| 338 | } |
| 339 | |
| 340 | if (is_null($param)) { |
| 341 | $res = null; |
| 342 | } elseif (is_array($res) && is_array($param['Value'])) { |
| 343 | $res = array_replace_recursive($res, $param['Value']); |
| 344 | } else { |
| 345 | $res = $param['Value']; |
| 346 | } |
| 347 | |
| 348 | return $res; |
| 349 | } |
| 350 | |
| 351 | /** |
| 352 | * Get parsed policy tree |
| 353 | * |
| 354 | * @return array |
| 355 | * |
| 356 | * @access public |
| 357 | * @version 6.0.0 |
| 358 | */ |
| 359 | public function getTree() |
| 360 | { |
| 361 | return $this->tree; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Check if resource and/or action is allowed |
| 366 | * |
| 367 | * @param mixed $resource Resource name or resource object |
| 368 | * @param string $effect Constraint effect (e.g. allow, deny) |
| 369 | * @param string $action Any specific action upon provided resource |
| 370 | * @param bool|null $default Default response |
| 371 | * @param array $args Inline arguments that are added to the context |
| 372 | * |
| 373 | * @return boolean|null The `null` is returned if there is no applicable statements |
| 374 | * that explicitly define effect |
| 375 | * |
| 376 | * @access protected |
| 377 | * @version 6.9.24 |
| 378 | */ |
| 379 | protected function is($resource, $effect, $action, $default, $args) |
| 380 | { |
| 381 | $result = $default; |
| 382 | $id = strtolower($resource . (!empty($action) ? ':' . $action : '')); |
| 383 | |
| 384 | if (isset($this->tree['Statement'][$id])) { |
| 385 | $stm = $this->getBestCandidate( |
| 386 | $this->tree['Statement'][$id], $args |
| 387 | ); |
| 388 | |
| 389 | if (!is_null($stm)) { |
| 390 | $result = (strtolower($stm['Effect']) === $effect); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | return $result; |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * Stem the effect |
| 399 | * |
| 400 | * Basically try to stem the effect from something like "Allowed" to "allow", or |
| 401 | * "Denied" to "deny". |
| 402 | * |
| 403 | * @param string $effect |
| 404 | * |
| 405 | * @return string |
| 406 | * |
| 407 | * @access private |
| 408 | * @version 6.9.24 |
| 409 | */ |
| 410 | private function _stemEffect($effect) |
| 411 | { |
| 412 | $n = strtolower($effect); |
| 413 | |
| 414 | return (isset($this->_effects[$n]) ? $this->_effects[$n] : $n); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Based on multiple competing statements or params, get the best candidate |
| 419 | * |
| 420 | * @param array $candidates |
| 421 | * @param array $args |
| 422 | * |
| 423 | * @return array|null |
| 424 | * |
| 425 | * @since 6.9.25 https://github.com/aamplugin/advanced-access-manager/issues/355 |
| 426 | * @since 5.5.4 https://github.com/aamplugin/advanced-access-manager/issues/128 |
| 427 | * @since 6.5.3 Initial implementation of the method |
| 428 | * |
| 429 | * @access protected |
| 430 | * @version 6.9.25 |
| 431 | */ |
| 432 | protected function getBestCandidate($candidates, $args = array()) |
| 433 | { |
| 434 | $candidate = null; |
| 435 | |
| 436 | if (is_array($candidates) && isset($candidates[0])) { |
| 437 | // Take in consideration ONLY currently applicable candidates and select |
| 438 | // either the last one or the one that is enforced |
| 439 | $enforced = false; |
| 440 | |
| 441 | foreach($candidates as $c) { |
| 442 | if ($this->isApplicable($c, $args)) { |
| 443 | if (!empty($c['Enforce'])) { |
| 444 | $candidate = $c; |
| 445 | $enforced = true; |
| 446 | } elseif ($enforced === false) { |
| 447 | $candidate = $c; |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | } else if ($this->isApplicable($candidates, $args)) { |
| 452 | $candidate = $candidates; |
| 453 | } |
| 454 | |
| 455 | return $candidate; |
| 456 | } |
| 457 | |
| 458 | /** |
| 459 | * Parse JSON policy and extract statements and params |
| 460 | * |
| 461 | * @param WP_Post $policy |
| 462 | * |
| 463 | * @return array |
| 464 | * |
| 465 | * @since 6.2.1 Added support for the POLICY_META token |
| 466 | * @since 6.0.0 Initial implementation of the method |
| 467 | * |
| 468 | * @access protected |
| 469 | * @version 6.2.1 |
| 470 | */ |
| 471 | protected function parsePolicy($policy) |
| 472 | { |
| 473 | // Any ${POLICY_META. replace with ${POLICY_META.123 |
| 474 | $json = str_replace( |
| 475 | '${POLICY_META.', |
| 476 | '${POLICY_META.' . $policy->ID . '.', |
| 477 | $policy->post_content |
| 478 | ); |
| 479 | $val = json_decode($json, true); |
| 480 | |
| 481 | // Do not load the policy if any errors |
| 482 | if (json_last_error() === JSON_ERROR_NONE) { |
| 483 | $tree = array( |
| 484 | 'Statement' => $this->_getArrayOfArrays($val, 'Statement'), |
| 485 | 'Param' => $this->_getArrayOfArrays($val, 'Param'), |
| 486 | ); |
| 487 | } else { |
| 488 | $tree = array('Statement' => array(), 'Param' => array()); |
| 489 | |
| 490 | // Make sure that this is noticed |
| 491 | _doing_it_wrong( |
| 492 | __CLASS__ . '::' . __METHOD__, |
| 493 | sprintf( |
| 494 | 'Access policy %d error %s', $policy->ID, json_last_error_msg() |
| 495 | ), |
| 496 | AAM_VERSION |
| 497 | ); |
| 498 | } |
| 499 | |
| 500 | return $tree; |
| 501 | } |
| 502 | |
| 503 | /** |
| 504 | * Get array of array for Statement and Param policy props |
| 505 | * |
| 506 | * @param array $input |
| 507 | * @param string $prop |
| 508 | * |
| 509 | * @return array |
| 510 | * |
| 511 | * @access private |
| 512 | * @version 6.0.0 |
| 513 | */ |
| 514 | private function _getArrayOfArrays($input, $prop) |
| 515 | { |
| 516 | $response = array(); |
| 517 | |
| 518 | // Parse Statements and determine if it is multidimensional |
| 519 | if (array_key_exists($prop, $input)) { |
| 520 | if (!isset($input[$prop][0]) || !is_array($input[$prop][0])) { |
| 521 | $response = array($input[$prop]); |
| 522 | } else { |
| 523 | $response = $input[$prop]; |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | return $response; |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * Extend tree with additional statements and params |
| 532 | * |
| 533 | * @param array $addition |
| 534 | * |
| 535 | * @return array |
| 536 | * |
| 537 | * @since 6.9.25 https://github.com/aamplugin/advanced-access-manager/issues/355 |
| 538 | * @since 6.5.3 https://github.com/aamplugin/advanced-access-manager/issues/122 |
| 539 | * https://github.com/aamplugin/advanced-access-manager/issues/124 |
| 540 | * @since 6.4.1 Simplified by removing &$tree first param |
| 541 | * @since 6.4.0 Supporting Param's Value to be more than just a scalar value |
| 542 | * @since 6.2.1 Typecasting param's value |
| 543 | * @since 6.1.0 Added support for the `=>` (map to) operator |
| 544 | * @since 6.0.0 Initial implementation of the method |
| 545 | * |
| 546 | * @access protected |
| 547 | * @version 6.9.25 |
| 548 | */ |
| 549 | protected function updatePolicyTree($addition) |
| 550 | { |
| 551 | $stmts = &$this->tree['Statement']; |
| 552 | $params = &$this->tree['Param']; |
| 553 | |
| 554 | $callback = array($this, 'getOption'); // Callback that hooks into get_option |
| 555 | |
| 556 | // Step #1. If there are any params, let's index them and insert into the list |
| 557 | foreach ($addition['Param'] as $param) { |
| 558 | if (!empty($param['Key'])) { |
| 559 | $param['Value'] = $this->replaceTokens($param['Value'], true); |
| 560 | |
| 561 | foreach($this->evaluatePolicyKey($param['Key']) as $key) { |
| 562 | if (!isset($params[$key]) || empty($params[$key]['Enforce'])) { |
| 563 | if (!isset($params[$key])) { |
| 564 | $params[$key] = array(); |
| 565 | } |
| 566 | |
| 567 | array_push($params[$key], $param); |
| 568 | |
| 569 | // If "option:" - hooks to the WP core for override |
| 570 | if (strpos($key, 'option:') === 0) { |
| 571 | $name = substr($key, 7); |
| 572 | |
| 573 | // Hook into the core |
| 574 | add_filter('pre_option_' . $name, $callback, 1, 2); |
| 575 | add_filter('pre_site_option_' . $name, $callback, 1, 2); |
| 576 | } |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | // Step #2. If there are any statements, let's index them by resource:action |
| 583 | // and insert into the list of statements |
| 584 | foreach ($addition['Statement'] as $stm) { |
| 585 | $resources = (isset($stm['Resource']) ? (array) $stm['Resource'] : array()); |
| 586 | $actions = (isset($stm['Action']) ? (array) $stm['Action'] : array('')); |
| 587 | |
| 588 | foreach ($resources as $res) { |
| 589 | foreach($this->evaluatePolicyKey($res) as $resource) { |
| 590 | foreach ($actions as $act) { |
| 591 | $id = strtolower($resource . (!empty($act) ? ":{$act}" : '')); |
| 592 | |
| 593 | if (!isset($stmts[$id])) { |
| 594 | $stmts[$id] = array(); |
| 595 | } |
| 596 | |
| 597 | array_push($stmts[$id], $stm); |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | /** |
| 605 | * Evaluate resource name or param key |
| 606 | * |
| 607 | * The resource or param key may have tokens that build dynamic keys. This method |
| 608 | * covers 3 possible scenario: |
| 609 | * - Map To "=>" - the token should return array of values that are mapped to the |
| 610 | * key; |
| 611 | * - Token - returns scalar value; |
| 612 | * - Raw Value - returns as-is |
| 613 | * |
| 614 | * @param string $key |
| 615 | * |
| 616 | * @return array |
| 617 | * |
| 618 | * @access protected |
| 619 | * @version 6.4.1 |
| 620 | */ |
| 621 | protected function evaluatePolicyKey($key) |
| 622 | { |
| 623 | $response = array(); |
| 624 | |
| 625 | // Allow to build resource name or param key dynamically. |
| 626 | if (preg_match('/^(.*)[\s]+(map to|=>)[\s]+(.*)$/i', $key, $match)) { |
| 627 | |
| 628 | // e.g. "Term:category:%s:posts => ${USER_META.regions}" |
| 629 | // e.g. "%s:default:category => ${HTTP_POST.post_types}" |
| 630 | $values = (array) AAM_Core_Policy_Token::getTokenValue($match[3]); |
| 631 | |
| 632 | // Create the map of resources/params and replace |
| 633 | foreach($values as $value) { |
| 634 | $response[] = sprintf($match[1], $value); |
| 635 | } |
| 636 | } elseif (preg_match_all('/(\$\{[^}]+\})/', $key, $match)) { |
| 637 | // e.g. "Term:category:${USER_META.region}:posts" |
| 638 | $response = array(AAM_Core_Policy_Token::evaluate($key, $match[1])); |
| 639 | } else { |
| 640 | $response = array($key); |
| 641 | } |
| 642 | |
| 643 | return $response; |
| 644 | } |
| 645 | |
| 646 | /** |
| 647 | * Replace all the dynamic tokens recursively |
| 648 | * |
| 649 | * @param array $data |
| 650 | * @param boolean $type_cast |
| 651 | * |
| 652 | * @return array |
| 653 | * |
| 654 | * @since 6.4.1 Added type casting param |
| 655 | * @since 6.0.0 Initial implementation of the method |
| 656 | * |
| 657 | * @access protected |
| 658 | * @version 6.4.1 |
| 659 | */ |
| 660 | protected function replaceTokens($data, $type_cast = false) |
| 661 | { |
| 662 | $replaced = array(); |
| 663 | |
| 664 | if (is_scalar($data)) { |
| 665 | $replaced = $this->_replaceTokensInString($data, $type_cast); |
| 666 | } else { |
| 667 | foreach($data as $key => $value) { |
| 668 | // Evaluate array's key and replace tokens |
| 669 | $key = $this->_replaceTokensInString($key); |
| 670 | |
| 671 | // Evaluate array's value and replace tokens |
| 672 | if (is_array($value)) { |
| 673 | $replaced[$key] = $this->replaceTokens($value, $type_cast); |
| 674 | } else { |
| 675 | $replaced[$key] = $this->_replaceTokensInString( |
| 676 | $value, $type_cast |
| 677 | ); |
| 678 | } |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | return $replaced; |
| 683 | } |
| 684 | |
| 685 | /** |
| 686 | * Replace tokens is provided scalar string |
| 687 | * |
| 688 | * @param string $token |
| 689 | * @param boolean $type_cast |
| 690 | * |
| 691 | * @return mixed |
| 692 | * |
| 693 | * @access private |
| 694 | * @version 6.4.1 |
| 695 | */ |
| 696 | private function _replaceTokensInString($token, $type_cast = false) |
| 697 | { |
| 698 | if (preg_match_all('/(\$\{[^}]+\})/', $token, $match)) { |
| 699 | $value = AAM_Core_Policy_Token::evaluate($token, $match[1]); |
| 700 | |
| 701 | if ($type_cast === true) { |
| 702 | $replaced = AAM_Core_Policy_Typecast::execute($value); |
| 703 | } else { |
| 704 | $replaced = $value; |
| 705 | } |
| 706 | } else { |
| 707 | $replaced = $token; |
| 708 | } |
| 709 | |
| 710 | return $replaced; |
| 711 | } |
| 712 | |
| 713 | /** |
| 714 | * Perform some internal clean-up |
| 715 | * |
| 716 | * @param array &$statements |
| 717 | * |
| 718 | * @return void |
| 719 | * |
| 720 | * @since 6.5.3 https://github.com/aamplugin/advanced-access-manager/issues/124 |
| 721 | * @since 6.0.0 Initial implementation of the method |
| 722 | * |
| 723 | * @access private |
| 724 | * @version 6.5.3 |
| 725 | */ |
| 726 | private function _cleanupTree(&$statements) |
| 727 | { |
| 728 | foreach($statements as $id => &$stm) { |
| 729 | if (is_array($stm) && isset($stm[0])) { |
| 730 | $this->_cleanupTree($stm); |
| 731 | } else { |
| 732 | if (isset($stm['Resource'])) { |
| 733 | unset($statements[$id]['Resource']); |
| 734 | } |
| 735 | if (isset($stm['Action'])) { |
| 736 | unset($statements[$id]['Action']); |
| 737 | } |
| 738 | } |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * Check if policy block is applicable |
| 744 | * |
| 745 | * @param array $block |
| 746 | * @param array $args |
| 747 | * |
| 748 | * @return boolean |
| 749 | * |
| 750 | * @access protected |
| 751 | * @version 6.0.0 |
| 752 | */ |
| 753 | protected function isApplicable($block, $args = array()) |
| 754 | { |
| 755 | $result = true; |
| 756 | |
| 757 | if (!empty($block['Condition']) && is_array($block['Condition'])) { |
| 758 | $result = AAM_Core_Policy_Condition::getInstance()->evaluate( |
| 759 | $block['Condition'], $args |
| 760 | ); |
| 761 | } |
| 762 | |
| 763 | return $result; |
| 764 | } |
| 765 | |
| 766 | } |