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Classes

  • Dispatcher
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  • Router
   1: <?php
   2: /**
   3:  * Parses the request URL into controller, action, and parameters.
   4:  *
   5:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
   6:  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
   7:  *
   8:  * Licensed under The MIT License
   9:  * For full copyright and license information, please see the LICENSE.txt
  10:  * Redistributions of files must retain the above copyright notice.
  11:  *
  12:  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  13:  * @link          http://cakephp.org CakePHP(tm) Project
  14:  * @package       Cake.Routing
  15:  * @since         CakePHP(tm) v 0.2.9
  16:  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
  17:  */
  18: 
  19: App::uses('CakeRequest', 'Network');
  20: App::uses('CakeRoute', 'Routing/Route');
  21: 
  22: /**
  23:  * Parses the request URL into controller, action, and parameters. Uses the connected routes
  24:  * to match the incoming URL string to parameters that will allow the request to be dispatched. Also
  25:  * handles converting parameter lists into URL strings, using the connected routes. Routing allows you to decouple
  26:  * the way the world interacts with your application (URLs) and the implementation (controllers and actions).
  27:  *
  28:  * ### Connecting routes
  29:  *
  30:  * Connecting routes is done using Router::connect(). When parsing incoming requests or reverse matching
  31:  * parameters, routes are enumerated in the order they were connected. You can modify the order of connected
  32:  * routes using Router::promote(). For more information on routes and how to connect them see Router::connect().
  33:  *
  34:  * ### Named parameters
  35:  *
  36:  * Named parameters allow you to embed key:value pairs into path segments. This allows you create hash
  37:  * structures using URLs. You can define how named parameters work in your application using Router::connectNamed()
  38:  *
  39:  * @package       Cake.Routing
  40:  */
  41: class Router {
  42: 
  43: /**
  44:  * Array of routes connected with Router::connect()
  45:  *
  46:  * @var array
  47:  */
  48:     public static $routes = array();
  49: 
  50: /**
  51:  * Have routes been loaded
  52:  *
  53:  * @var bool
  54:  */
  55:     public static $initialized = false;
  56: 
  57: /**
  58:  * Contains the base string that will be applied to all generated URLs
  59:  * For example `https://example.com`
  60:  *
  61:  * @var string
  62:  */
  63:     protected static $_fullBaseUrl;
  64: 
  65: /**
  66:  * List of action prefixes used in connected routes.
  67:  * Includes admin prefix
  68:  *
  69:  * @var array
  70:  */
  71:     protected static $_prefixes = array();
  72: 
  73: /**
  74:  * Directive for Router to parse out file extensions for mapping to Content-types.
  75:  *
  76:  * @var bool
  77:  */
  78:     protected static $_parseExtensions = false;
  79: 
  80: /**
  81:  * List of valid extensions to parse from a URL. If null, any extension is allowed.
  82:  *
  83:  * @var array
  84:  */
  85:     protected static $_validExtensions = array();
  86: 
  87: /**
  88:  * Regular expression for action names
  89:  *
  90:  * @var string
  91:  */
  92:     const ACTION = 'index|show|add|create|edit|update|remove|del|delete|view|item';
  93: 
  94: /**
  95:  * Regular expression for years
  96:  *
  97:  * @var string
  98:  */
  99:     const YEAR = '[12][0-9]{3}';
 100: 
 101: /**
 102:  * Regular expression for months
 103:  *
 104:  * @var string
 105:  */
 106:     const MONTH = '0[1-9]|1[012]';
 107: 
 108: /**
 109:  * Regular expression for days
 110:  *
 111:  * @var string
 112:  */
 113:     const DAY = '0[1-9]|[12][0-9]|3[01]';
 114: 
 115: /**
 116:  * Regular expression for auto increment IDs
 117:  *
 118:  * @var string
 119:  */
 120:     const ID = '[0-9]+';
 121: 
 122: /**
 123:  * Regular expression for UUIDs
 124:  *
 125:  * @var string
 126:  */
 127:     const UUID = '[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}';
 128: 
 129: /**
 130:  * Named expressions
 131:  *
 132:  * @var array
 133:  */
 134:     protected static $_namedExpressions = array(
 135:         'Action' => Router::ACTION,
 136:         'Year' => Router::YEAR,
 137:         'Month' => Router::MONTH,
 138:         'Day' => Router::DAY,
 139:         'ID' => Router::ID,
 140:         'UUID' => Router::UUID
 141:     );
 142: 
 143: /**
 144:  * Stores all information necessary to decide what named arguments are parsed under what conditions.
 145:  *
 146:  * @var string
 147:  */
 148:     protected static $_namedConfig = array(
 149:         'default' => array('page', 'fields', 'order', 'limit', 'recursive', 'sort', 'direction', 'step'),
 150:         'greedyNamed' => true,
 151:         'separator' => ':',
 152:         'rules' => false,
 153:     );
 154: 
 155: /**
 156:  * The route matching the URL of the current request
 157:  *
 158:  * @var array
 159:  */
 160:     protected static $_currentRoute = array();
 161: 
 162: /**
 163:  * Default HTTP request method => controller action map.
 164:  *
 165:  * @var array
 166:  */
 167:     protected static $_resourceMap = array(
 168:         array('action' => 'index', 'method' => 'GET', 'id' => false),
 169:         array('action' => 'view', 'method' => 'GET', 'id' => true),
 170:         array('action' => 'add', 'method' => 'POST', 'id' => false),
 171:         array('action' => 'edit', 'method' => 'PUT', 'id' => true),
 172:         array('action' => 'delete', 'method' => 'DELETE', 'id' => true),
 173:         array('action' => 'edit', 'method' => 'POST', 'id' => true)
 174:     );
 175: 
 176: /**
 177:  * List of resource-mapped controllers
 178:  *
 179:  * @var array
 180:  */
 181:     protected static $_resourceMapped = array();
 182: 
 183: /**
 184:  * Maintains the request object stack for the current request.
 185:  * This will contain more than one request object when requestAction is used.
 186:  *
 187:  * @var array
 188:  */
 189:     protected static $_requests = array();
 190: 
 191: /**
 192:  * Initial state is populated the first time reload() is called which is at the bottom
 193:  * of this file. This is a cheat as get_class_vars() returns the value of static vars even if they
 194:  * have changed.
 195:  *
 196:  * @var array
 197:  */
 198:     protected static $_initialState = array();
 199: 
 200: /**
 201:  * Default route class to use
 202:  *
 203:  * @var string
 204:  */
 205:     protected static $_routeClass = 'CakeRoute';
 206: 
 207: /**
 208:  * Set the default route class to use or return the current one
 209:  *
 210:  * @param string $routeClass to set as default
 211:  * @return mixed void|string
 212:  * @throws RouterException
 213:  */
 214:     public static function defaultRouteClass($routeClass = null) {
 215:         if ($routeClass === null) {
 216:             return self::$_routeClass;
 217:         }
 218: 
 219:         self::$_routeClass = self::_validateRouteClass($routeClass);
 220:     }
 221: 
 222: /**
 223:  * Validates that the passed route class exists and is a subclass of CakeRoute
 224:  *
 225:  * @param string $routeClass Route class name
 226:  * @return string
 227:  * @throws RouterException
 228:  */
 229:     protected static function _validateRouteClass($routeClass) {
 230:         if ($routeClass !== 'CakeRoute' &&
 231:             (!class_exists($routeClass) || !is_subclass_of($routeClass, 'CakeRoute'))
 232:         ) {
 233:             throw new RouterException(__d('cake_dev', 'Route class not found, or route class is not a subclass of CakeRoute'));
 234:         }
 235:         return $routeClass;
 236:     }
 237: 
 238: /**
 239:  * Sets the Routing prefixes.
 240:  *
 241:  * @return void
 242:  */
 243:     protected static function _setPrefixes() {
 244:         $routing = Configure::read('Routing');
 245:         if (!empty($routing['prefixes'])) {
 246:             self::$_prefixes = array_merge(self::$_prefixes, (array)$routing['prefixes']);
 247:         }
 248:     }
 249: 
 250: /**
 251:  * Gets the named route elements for use in app/Config/routes.php
 252:  *
 253:  * @return array Named route elements
 254:  * @see Router::$_namedExpressions
 255:  */
 256:     public static function getNamedExpressions() {
 257:         return self::$_namedExpressions;
 258:     }
 259: 
 260: /**
 261:  * Resource map getter & setter.
 262:  *
 263:  * @param array $resourceMap Resource map
 264:  * @return mixed
 265:  * @see Router::$_resourceMap
 266:  */
 267:     public static function resourceMap($resourceMap = null) {
 268:         if ($resourceMap === null) {
 269:             return self::$_resourceMap;
 270:         }
 271:         self::$_resourceMap = $resourceMap;
 272:     }
 273: 
 274: /**
 275:  * Connects a new Route in the router.
 276:  *
 277:  * Routes are a way of connecting request URLs to objects in your application. At their core routes
 278:  * are a set of regular expressions that are used to match requests to destinations.
 279:  *
 280:  * Examples:
 281:  *
 282:  * `Router::connect('/:controller/:action/*');`
 283:  *
 284:  * The first token ':controller' will be used as a controller name while the second is used as the action name.
 285:  * the '/*' syntax makes this route greedy in that it will match requests like `/posts/index` as well as requests
 286:  * like `/posts/edit/1/foo/bar`.
 287:  *
 288:  * `Router::connect('/home-page', array('controller' => 'pages', 'action' => 'display', 'home'));`
 289:  *
 290:  * The above shows the use of route parameter defaults, and providing routing parameters for a static route.
 291:  *
 292:  * {{{
 293:  * Router::connect(
 294:  *   '/:lang/:controller/:action/:id',
 295:  *   array(),
 296:  *   array('id' => '[0-9]+', 'lang' => '[a-z]{3}')
 297:  * );
 298:  * }}}
 299:  *
 300:  * Shows connecting a route with custom route parameters as well as providing patterns for those parameters.
 301:  * Patterns for routing parameters do not need capturing groups, as one will be added for each route params.
 302:  *
 303:  * $defaults is merged with the results of parsing the request URL to form the final routing destination and its
 304:  * parameters. This destination is expressed as an associative array by Router. See the output of {@link parse()}.
 305:  *
 306:  * $options offers four 'special' keys. `pass`, `named`, `persist` and `routeClass`
 307:  * have special meaning in the $options array.
 308:  *
 309:  * - `pass` is used to define which of the routed parameters should be shifted into the pass array. Adding a
 310:  *   parameter to pass will remove it from the regular route array. Ex. `'pass' => array('slug')`
 311:  * - `persist` is used to define which route parameters should be automatically included when generating
 312:  *   new URLs. You can override persistent parameters by redefining them in a URL or remove them by
 313:  *   setting the parameter to `false`. Ex. `'persist' => array('lang')`
 314:  * - `routeClass` is used to extend and change how individual routes parse requests and handle reverse routing,
 315:  *   via a custom routing class. Ex. `'routeClass' => 'SlugRoute'`
 316:  * - `named` is used to configure named parameters at the route level. This key uses the same options
 317:  *   as Router::connectNamed()
 318:  *
 319:  * You can also add additional conditions for matching routes to the $defaults array.
 320:  * The following conditions can be used:
 321:  *
 322:  * - `[type]` Only match requests for specific content types.
 323:  * - `[method]` Only match requests with specific HTTP verbs.
 324:  * - `[server]` Only match when $_SERVER['SERVER_NAME'] matches the given value.
 325:  *
 326:  * Example of using the `[method]` condition:
 327:  *
 328:  * `Router::connect('/tasks', array('controller' => 'tasks', 'action' => 'index', '[method]' => 'GET'));`
 329:  *
 330:  * The above route will only be matched for GET requests. POST requests will fail to match this route.
 331:  *
 332:  * @param string $route A string describing the template of the route
 333:  * @param array $defaults An array describing the default route parameters. These parameters will be used by default
 334:  *   and can supply routing parameters that are not dynamic. See above.
 335:  * @param array $options An array matching the named elements in the route to regular expressions which that
 336:  *   element should match. Also contains additional parameters such as which routed parameters should be
 337:  *   shifted into the passed arguments, supplying patterns for routing parameters and supplying the name of a
 338:  *   custom routing class.
 339:  * @see routes
 340:  * @see parse().
 341:  * @return array Array of routes
 342:  * @throws RouterException
 343:  */
 344:     public static function connect($route, $defaults = array(), $options = array()) {
 345:         self::$initialized = true;
 346: 
 347:         foreach (self::$_prefixes as $prefix) {
 348:             if (isset($defaults[$prefix])) {
 349:                 if ($defaults[$prefix]) {
 350:                     $defaults['prefix'] = $prefix;
 351:                 } else {
 352:                     unset($defaults[$prefix]);
 353:                 }
 354:                 break;
 355:             }
 356:         }
 357:         if (isset($defaults['prefix'])) {
 358:             self::$_prefixes[] = $defaults['prefix'];
 359:             self::$_prefixes = array_keys(array_flip(self::$_prefixes));
 360:         }
 361:         $defaults += array('plugin' => null);
 362:         if (empty($options['action'])) {
 363:             $defaults += array('action' => 'index');
 364:         }
 365:         $routeClass = self::$_routeClass;
 366:         if (isset($options['routeClass'])) {
 367:             if (strpos($options['routeClass'], '.') === false) {
 368:                 $routeClass = $options['routeClass'];
 369:             } else {
 370:                 list(, $routeClass) = pluginSplit($options['routeClass'], true);
 371:             }
 372:             $routeClass = self::_validateRouteClass($routeClass);
 373:             unset($options['routeClass']);
 374:         }
 375:         if ($routeClass === 'RedirectRoute' && isset($defaults['redirect'])) {
 376:             $defaults = $defaults['redirect'];
 377:         }
 378:         self::$routes[] = new $routeClass($route, $defaults, $options);
 379:         return self::$routes;
 380:     }
 381: 
 382: /**
 383:  * Connects a new redirection Route in the router.
 384:  *
 385:  * Redirection routes are different from normal routes as they perform an actual
 386:  * header redirection if a match is found. The redirection can occur within your
 387:  * application or redirect to an outside location.
 388:  *
 389:  * Examples:
 390:  *
 391:  * `Router::redirect('/home/*', array('controller' => 'posts', 'action' => 'view'), array('persist' => true));`
 392:  *
 393:  * Redirects /home/* to /posts/view and passes the parameters to /posts/view. Using an array as the
 394:  * redirect destination allows you to use other routes to define where a URL string should be redirected to.
 395:  *
 396:  * `Router::redirect('/posts/*', 'http://google.com', array('status' => 302));`
 397:  *
 398:  * Redirects /posts/* to http://google.com with a HTTP status of 302
 399:  *
 400:  * ### Options:
 401:  *
 402:  * - `status` Sets the HTTP status (default 301)
 403:  * - `persist` Passes the params to the redirected route, if it can. This is useful with greedy routes,
 404:  *   routes that end in `*` are greedy. As you can remap URLs and not loose any passed/named args.
 405:  *
 406:  * @param string $route A string describing the template of the route
 407:  * @param array $url A URL to redirect to. Can be a string or a CakePHP array-based URL
 408:  * @param array $options An array matching the named elements in the route to regular expressions which that
 409:  *   element should match. Also contains additional parameters such as which routed parameters should be
 410:  *   shifted into the passed arguments. As well as supplying patterns for routing parameters.
 411:  * @see routes
 412:  * @return array Array of routes
 413:  */
 414:     public static function redirect($route, $url, $options = array()) {
 415:         App::uses('RedirectRoute', 'Routing/Route');
 416:         $options['routeClass'] = 'RedirectRoute';
 417:         if (is_string($url)) {
 418:             $url = array('redirect' => $url);
 419:         }
 420:         return self::connect($route, $url, $options);
 421:     }
 422: 
 423: /**
 424:  * Specifies what named parameters CakePHP should be parsing out of incoming URLs. By default
 425:  * CakePHP will parse every named parameter out of incoming URLs. However, if you want to take more
 426:  * control over how named parameters are parsed you can use one of the following setups:
 427:  *
 428:  * Do not parse any named parameters:
 429:  *
 430:  * {{{ Router::connectNamed(false); }}}
 431:  *
 432:  * Parse only default parameters used for CakePHP's pagination:
 433:  *
 434:  * {{{ Router::connectNamed(false, array('default' => true)); }}}
 435:  *
 436:  * Parse only the page parameter if its value is a number:
 437:  *
 438:  * {{{ Router::connectNamed(array('page' => '[\d]+'), array('default' => false, 'greedy' => false)); }}}
 439:  *
 440:  * Parse only the page parameter no matter what.
 441:  *
 442:  * {{{ Router::connectNamed(array('page'), array('default' => false, 'greedy' => false)); }}}
 443:  *
 444:  * Parse only the page parameter if the current action is 'index'.
 445:  *
 446:  * {{{
 447:  * Router::connectNamed(
 448:  *    array('page' => array('action' => 'index')),
 449:  *    array('default' => false, 'greedy' => false)
 450:  * );
 451:  * }}}
 452:  *
 453:  * Parse only the page parameter if the current action is 'index' and the controller is 'pages'.
 454:  *
 455:  * {{{
 456:  * Router::connectNamed(
 457:  *    array('page' => array('action' => 'index', 'controller' => 'pages')),
 458:  *    array('default' => false, 'greedy' => false)
 459:  * );
 460:  * }}}
 461:  *
 462:  * ### Options
 463:  *
 464:  * - `greedy` Setting this to true will make Router parse all named params. Setting it to false will
 465:  *    parse only the connected named params.
 466:  * - `default` Set this to true to merge in the default set of named parameters.
 467:  * - `reset` Set to true to clear existing rules and start fresh.
 468:  * - `separator` Change the string used to separate the key & value in a named parameter. Defaults to `:`
 469:  *
 470:  * @param array $named A list of named parameters. Key value pairs are accepted where values are
 471:  *    either regex strings to match, or arrays as seen above.
 472:  * @param array $options Allows to control all settings: separator, greedy, reset, default
 473:  * @return array
 474:  */
 475:     public static function connectNamed($named, $options = array()) {
 476:         if (isset($options['separator'])) {
 477:             self::$_namedConfig['separator'] = $options['separator'];
 478:             unset($options['separator']);
 479:         }
 480: 
 481:         if ($named === true || $named === false) {
 482:             $options += array('default' => $named, 'reset' => true, 'greedy' => $named);
 483:             $named = array();
 484:         } else {
 485:             $options += array('default' => false, 'reset' => false, 'greedy' => true);
 486:         }
 487: 
 488:         if ($options['reset'] || self::$_namedConfig['rules'] === false) {
 489:             self::$_namedConfig['rules'] = array();
 490:         }
 491: 
 492:         if ($options['default']) {
 493:             $named = array_merge($named, self::$_namedConfig['default']);
 494:         }
 495: 
 496:         foreach ($named as $key => $val) {
 497:             if (is_numeric($key)) {
 498:                 self::$_namedConfig['rules'][$val] = true;
 499:             } else {
 500:                 self::$_namedConfig['rules'][$key] = $val;
 501:             }
 502:         }
 503:         self::$_namedConfig['greedyNamed'] = $options['greedy'];
 504:         return self::$_namedConfig;
 505:     }
 506: 
 507: /**
 508:  * Gets the current named parameter configuration values.
 509:  *
 510:  * @return array
 511:  * @see Router::$_namedConfig
 512:  */
 513:     public static function namedConfig() {
 514:         return self::$_namedConfig;
 515:     }
 516: 
 517: /**
 518:  * Creates REST resource routes for the given controller(s). When creating resource routes
 519:  * for a plugin, by default the prefix will be changed to the lower_underscore version of the plugin
 520:  * name. By providing a prefix you can override this behavior.
 521:  *
 522:  * ### Options:
 523:  *
 524:  * - 'id' - The regular expression fragment to use when matching IDs. By default, matches
 525:  *    integer values and UUIDs.
 526:  * - 'prefix' - URL prefix to use for the generated routes. Defaults to '/'.
 527:  *
 528:  * @param string|array $controller A controller name or array of controller names (i.e. "Posts" or "ListItems")
 529:  * @param array $options Options to use when generating REST routes
 530:  * @return array Array of mapped resources
 531:  */
 532:     public static function mapResources($controller, $options = array()) {
 533:         $hasPrefix = isset($options['prefix']);
 534:         $options += array(
 535:             'connectOptions' => array(),
 536:             'prefix' => '/',
 537:             'id' => self::ID . '|' . self::UUID
 538:         );
 539: 
 540:         $prefix = $options['prefix'];
 541:         $connectOptions = $options['connectOptions'];
 542:         unset($options['connectOptions']);
 543:         if (strpos($prefix, '/') !== 0) {
 544:             $prefix = '/' . $prefix;
 545:         }
 546:         if (substr($prefix, -1) !== '/') {
 547:             $prefix .= '/';
 548:         }
 549: 
 550:         foreach ((array)$controller as $name) {
 551:             list($plugin, $name) = pluginSplit($name);
 552:             $urlName = Inflector::underscore($name);
 553:             $plugin = Inflector::underscore($plugin);
 554:             if ($plugin && !$hasPrefix) {
 555:                 $prefix = '/' . $plugin . '/';
 556:             }
 557: 
 558:             foreach (self::$_resourceMap as $params) {
 559:                 $url = $prefix . $urlName . (($params['id']) ? '/:id' : '');
 560: 
 561:                 Router::connect($url,
 562:                     array(
 563:                         'plugin' => $plugin,
 564:                         'controller' => $urlName,
 565:                         'action' => $params['action'],
 566:                         '[method]' => $params['method']
 567:                     ),
 568:                     array_merge(
 569:                         array('id' => $options['id'], 'pass' => array('id')),
 570:                         $connectOptions
 571:                     )
 572:                 );
 573:             }
 574:             self::$_resourceMapped[] = $urlName;
 575:         }
 576:         return self::$_resourceMapped;
 577:     }
 578: 
 579: /**
 580:  * Returns the list of prefixes used in connected routes
 581:  *
 582:  * @return array A list of prefixes used in connected routes
 583:  */
 584:     public static function prefixes() {
 585:         return self::$_prefixes;
 586:     }
 587: 
 588: /**
 589:  * Parses given URL string. Returns 'routing' parameters for that URL.
 590:  *
 591:  * @param string $url URL to be parsed
 592:  * @return array Parsed elements from URL
 593:  */
 594:     public static function parse($url) {
 595:         if (!self::$initialized) {
 596:             self::_loadRoutes();
 597:         }
 598: 
 599:         $ext = null;
 600:         $out = array();
 601: 
 602:         if (strlen($url) && strpos($url, '/') !== 0) {
 603:             $url = '/' . $url;
 604:         }
 605:         if (strpos($url, '?') !== false) {
 606:             list($url, $queryParameters) = explode('?', $url, 2);
 607:             parse_str($queryParameters, $queryParameters);
 608:         }
 609: 
 610:         extract(self::_parseExtension($url));
 611: 
 612:         for ($i = 0, $len = count(self::$routes); $i < $len; $i++) {
 613:             $route =& self::$routes[$i];
 614: 
 615:             if (($r = $route->parse($url)) !== false) {
 616:                 self::$_currentRoute[] =& $route;
 617:                 $out = $r;
 618:                 break;
 619:             }
 620:         }
 621:         if (isset($out['prefix'])) {
 622:             $out['action'] = $out['prefix'] . '_' . $out['action'];
 623:         }
 624: 
 625:         if (!empty($ext) && !isset($out['ext'])) {
 626:             $out['ext'] = $ext;
 627:         }
 628: 
 629:         if (!empty($queryParameters) && !isset($out['?'])) {
 630:             $out['?'] = $queryParameters;
 631:         }
 632:         return $out;
 633:     }
 634: 
 635: /**
 636:  * Parses a file extension out of a URL, if Router::parseExtensions() is enabled.
 637:  *
 638:  * @param string $url URL.
 639:  * @return array Returns an array containing the altered URL and the parsed extension.
 640:  */
 641:     protected static function _parseExtension($url) {
 642:         $ext = null;
 643: 
 644:         if (self::$_parseExtensions) {
 645:             if (preg_match('/\.[0-9a-zA-Z]*$/', $url, $match) === 1) {
 646:                 $match = substr($match[0], 1);
 647:                 if (empty(self::$_validExtensions)) {
 648:                     $url = substr($url, 0, strpos($url, '.' . $match));
 649:                     $ext = $match;
 650:                 } else {
 651:                     foreach (self::$_validExtensions as $name) {
 652:                         if (strcasecmp($name, $match) === 0) {
 653:                             $url = substr($url, 0, strpos($url, '.' . $name));
 654:                             $ext = $match;
 655:                             break;
 656:                         }
 657:                     }
 658:                 }
 659:             }
 660:         }
 661:         return compact('ext', 'url');
 662:     }
 663: 
 664: /**
 665:  * Takes parameter and path information back from the Dispatcher, sets these
 666:  * parameters as the current request parameters that are merged with URL arrays
 667:  * created later in the request.
 668:  *
 669:  * Nested requests will create a stack of requests. You can remove requests using
 670:  * Router::popRequest(). This is done automatically when using Object::requestAction().
 671:  *
 672:  * Will accept either a CakeRequest object or an array of arrays. Support for
 673:  * accepting arrays may be removed in the future.
 674:  *
 675:  * @param CakeRequest|array $request Parameters and path information or a CakeRequest object.
 676:  * @return void
 677:  */
 678:     public static function setRequestInfo($request) {
 679:         if ($request instanceof CakeRequest) {
 680:             self::$_requests[] = $request;
 681:         } else {
 682:             $requestObj = new CakeRequest();
 683:             $request += array(array(), array());
 684:             $request[0] += array('controller' => false, 'action' => false, 'plugin' => null);
 685:             $requestObj->addParams($request[0])->addPaths($request[1]);
 686:             self::$_requests[] = $requestObj;
 687:         }
 688:     }
 689: 
 690: /**
 691:  * Pops a request off of the request stack. Used when doing requestAction
 692:  *
 693:  * @return CakeRequest The request removed from the stack.
 694:  * @see Router::setRequestInfo()
 695:  * @see Object::requestAction()
 696:  */
 697:     public static function popRequest() {
 698:         return array_pop(self::$_requests);
 699:     }
 700: 
 701: /**
 702:  * Gets the current request object, or the first one.
 703:  *
 704:  * @param bool $current True to get the current request object, or false to get the first one.
 705:  * @return CakeRequest|null Null if stack is empty.
 706:  */
 707:     public static function getRequest($current = false) {
 708:         if ($current) {
 709:             $i = count(self::$_requests) - 1;
 710:             return isset(self::$_requests[$i]) ? self::$_requests[$i] : null;
 711:         }
 712:         return isset(self::$_requests[0]) ? self::$_requests[0] : null;
 713:     }
 714: 
 715: /**
 716:  * Gets parameter information
 717:  *
 718:  * @param bool $current Get current request parameter, useful when using requestAction
 719:  * @return array Parameter information
 720:  */
 721:     public static function getParams($current = false) {
 722:         if ($current && self::$_requests) {
 723:             return self::$_requests[count(self::$_requests) - 1]->params;
 724:         }
 725:         if (isset(self::$_requests[0])) {
 726:             return self::$_requests[0]->params;
 727:         }
 728:         return array();
 729:     }
 730: 
 731: /**
 732:  * Gets URL parameter by name
 733:  *
 734:  * @param string $name Parameter name
 735:  * @param bool $current Current parameter, useful when using requestAction
 736:  * @return string Parameter value
 737:  */
 738:     public static function getParam($name = 'controller', $current = false) {
 739:         $params = Router::getParams($current);
 740:         if (isset($params[$name])) {
 741:             return $params[$name];
 742:         }
 743:         return null;
 744:     }
 745: 
 746: /**
 747:  * Gets path information
 748:  *
 749:  * @param bool $current Current parameter, useful when using requestAction
 750:  * @return array
 751:  */
 752:     public static function getPaths($current = false) {
 753:         if ($current) {
 754:             return self::$_requests[count(self::$_requests) - 1];
 755:         }
 756:         if (!isset(self::$_requests[0])) {
 757:             return array('base' => null);
 758:         }
 759:         return array('base' => self::$_requests[0]->base);
 760:     }
 761: 
 762: /**
 763:  * Reloads default Router settings. Resets all class variables and
 764:  * removes all connected routes.
 765:  *
 766:  * @return void
 767:  */
 768:     public static function reload() {
 769:         if (empty(self::$_initialState)) {
 770:             self::$_initialState = get_class_vars('Router');
 771:             self::_setPrefixes();
 772:             return;
 773:         }
 774:         foreach (self::$_initialState as $key => $val) {
 775:             if ($key !== '_initialState') {
 776:                 self::${$key} = $val;
 777:             }
 778:         }
 779:         self::_setPrefixes();
 780:     }
 781: 
 782: /**
 783:  * Promote a route (by default, the last one added) to the beginning of the list
 784:  *
 785:  * @param int $which A zero-based array index representing the route to move. For example,
 786:  *    if 3 routes have been added, the last route would be 2.
 787:  * @return bool Returns false if no route exists at the position specified by $which.
 788:  */
 789:     public static function promote($which = null) {
 790:         if ($which === null) {
 791:             $which = count(self::$routes) - 1;
 792:         }
 793:         if (!isset(self::$routes[$which])) {
 794:             return false;
 795:         }
 796:         $route =& self::$routes[$which];
 797:         unset(self::$routes[$which]);
 798:         array_unshift(self::$routes, $route);
 799:         return true;
 800:     }
 801: 
 802: /**
 803:  * Finds URL for specified action.
 804:  *
 805:  * Returns a URL pointing to a combination of controller and action. Param
 806:  * $url can be:
 807:  *
 808:  * - Empty - the method will find address to actual controller/action.
 809:  * - '/' - the method will find base URL of application.
 810:  * - A combination of controller/action - the method will find URL for it.
 811:  *
 812:  * There are a few 'special' parameters that can change the final URL string that is generated
 813:  *
 814:  * - `base` - Set to false to remove the base path from the generated URL. If your application
 815:  *   is not in the root directory, this can be used to generate URLs that are 'cake relative'.
 816:  *   cake relative URLs are required when using requestAction.
 817:  * - `?` - Takes an array of query string parameters
 818:  * - `#` - Allows you to set URL hash fragments.
 819:  * - `full_base` - If true the `Router::fullBaseUrl()` value will be prepended to generated URLs.
 820:  *
 821:  * @param string|array $url Cake-relative URL, like "/products/edit/92" or "/presidents/elect/4"
 822:  *   or an array specifying any of the following: 'controller', 'action',
 823:  *   and/or 'plugin', in addition to named arguments (keyed array elements),
 824:  *   and standard URL arguments (indexed array elements)
 825:  * @param bool|array $full If (bool) true, the full base URL will be prepended to the result.
 826:  *   If an array accepts the following keys
 827:  *    - escape - used when making URLs embedded in html escapes query string '&'
 828:  *    - full - if true the full base URL will be prepended.
 829:  * @return string Full translated URL with base path.
 830:  */
 831:     public static function url($url = null, $full = false) {
 832:         if (!self::$initialized) {
 833:             self::_loadRoutes();
 834:         }
 835: 
 836:         $params = array('plugin' => null, 'controller' => null, 'action' => 'index');
 837: 
 838:         if (is_bool($full)) {
 839:             $escape = false;
 840:         } else {
 841:             extract($full + array('escape' => false, 'full' => false));
 842:         }
 843: 
 844:         $path = array('base' => null);
 845:         if (!empty(self::$_requests)) {
 846:             $request = self::$_requests[count(self::$_requests) - 1];
 847:             $params = $request->params;
 848:             $path = array('base' => $request->base, 'here' => $request->here);
 849:         }
 850:         if (empty($path['base'])) {
 851:             $path['base'] = Configure::read('App.base');
 852:         }
 853: 
 854:         $base = $path['base'];
 855:         $extension = $output = $q = $frag = null;
 856: 
 857:         if (empty($url)) {
 858:             $output = isset($path['here']) ? $path['here'] : '/';
 859:             if ($full) {
 860:                 $output = self::fullBaseUrl() . $output;
 861:             }
 862:             return $output;
 863:         } elseif (is_array($url)) {
 864:             if (isset($url['base']) && $url['base'] === false) {
 865:                 $base = null;
 866:                 unset($url['base']);
 867:             }
 868:             if (isset($url['full_base']) && $url['full_base'] === true) {
 869:                 $full = true;
 870:                 unset($url['full_base']);
 871:             }
 872:             if (isset($url['?'])) {
 873:                 $q = $url['?'];
 874:                 unset($url['?']);
 875:             }
 876:             if (isset($url['#'])) {
 877:                 $frag = '#' . $url['#'];
 878:                 unset($url['#']);
 879:             }
 880:             if (isset($url['ext'])) {
 881:                 $extension = '.' . $url['ext'];
 882:                 unset($url['ext']);
 883:             }
 884:             if (empty($url['action'])) {
 885:                 if (empty($url['controller']) || $params['controller'] === $url['controller']) {
 886:                     $url['action'] = $params['action'];
 887:                 } else {
 888:                     $url['action'] = 'index';
 889:                 }
 890:             }
 891: 
 892:             $prefixExists = (array_intersect_key($url, array_flip(self::$_prefixes)));
 893:             foreach (self::$_prefixes as $prefix) {
 894:                 if (!empty($params[$prefix]) && !$prefixExists) {
 895:                     $url[$prefix] = true;
 896:                 } elseif (isset($url[$prefix]) && !$url[$prefix]) {
 897:                     unset($url[$prefix]);
 898:                 }
 899:                 if (isset($url[$prefix]) && strpos($url['action'], $prefix . '_') === 0) {
 900:                     $url['action'] = substr($url['action'], strlen($prefix) + 1);
 901:                 }
 902:             }
 903: 
 904:             $url += array('controller' => $params['controller'], 'plugin' => $params['plugin']);
 905: 
 906:             $match = false;
 907: 
 908:             for ($i = 0, $len = count(self::$routes); $i < $len; $i++) {
 909:                 $originalUrl = $url;
 910: 
 911:                 $url = self::$routes[$i]->persistParams($url, $params);
 912: 
 913:                 if ($match = self::$routes[$i]->match($url)) {
 914:                     $output = trim($match, '/');
 915:                     break;
 916:                 }
 917:                 $url = $originalUrl;
 918:             }
 919:             if ($match === false) {
 920:                 $output = self::_handleNoRoute($url);
 921:             }
 922:         } else {
 923:             if (preg_match('/^([a-z][a-z0-9.+\-]+:|:?\/\/|[#?])/i', $url)) {
 924:                 return $url;
 925:             }
 926:             if (substr($url, 0, 1) === '/') {
 927:                 $output = substr($url, 1);
 928:             } else {
 929:                 foreach (self::$_prefixes as $prefix) {
 930:                     if (isset($params[$prefix])) {
 931:                         $output .= $prefix . '/';
 932:                         break;
 933:                     }
 934:                 }
 935:                 if (!empty($params['plugin']) && $params['plugin'] !== $params['controller']) {
 936:                     $output .= Inflector::underscore($params['plugin']) . '/';
 937:                 }
 938:                 $output .= Inflector::underscore($params['controller']) . '/' . $url;
 939:             }
 940:         }
 941:         $protocol = preg_match('#^[a-z][a-z0-9+\-.]*\://#i', $output);
 942:         if ($protocol === 0) {
 943:             $output = str_replace('//', '/', $base . '/' . $output);
 944: 
 945:             if ($full) {
 946:                 $output = self::fullBaseUrl() . $output;
 947:             }
 948:             if (!empty($extension)) {
 949:                 $output = rtrim($output, '/');
 950:             }
 951:         }
 952:         return $output . $extension . self::queryString($q, array(), $escape) . $frag;
 953:     }
 954: 
 955: /**
 956:  * Sets the full base URL that will be used as a prefix for generating
 957:  * fully qualified URLs for this application. If no parameters are passed,
 958:  * the currently configured value is returned.
 959:  *
 960:  * ## Note:
 961:  *
 962:  * If you change the configuration value ``App.fullBaseUrl`` during runtime
 963:  * and expect the router to produce links using the new setting, you are
 964:  * required to call this method passing such value again.
 965:  *
 966:  * @param string $base the prefix for URLs generated containing the domain.
 967:  * For example: ``http://example.com``
 968:  * @return string
 969:  */
 970:     public static function fullBaseUrl($base = null) {
 971:         if ($base !== null) {
 972:             self::$_fullBaseUrl = $base;
 973:             Configure::write('App.fullBaseUrl', $base);
 974:         }
 975:         if (empty(self::$_fullBaseUrl)) {
 976:             self::$_fullBaseUrl = Configure::read('App.fullBaseUrl');
 977:         }
 978:         return self::$_fullBaseUrl;
 979:     }
 980: 
 981: /**
 982:  * A special fallback method that handles URL arrays that cannot match
 983:  * any defined routes.
 984:  *
 985:  * @param array $url A URL that didn't match any routes
 986:  * @return string A generated URL for the array
 987:  * @see Router::url()
 988:  */
 989:     protected static function _handleNoRoute($url) {
 990:         $named = $args = array();
 991:         $skip = array_merge(
 992:             array('bare', 'action', 'controller', 'plugin', 'prefix'),
 993:             self::$_prefixes
 994:         );
 995: 
 996:         $keys = array_values(array_diff(array_keys($url), $skip));
 997:         $count = count($keys);
 998: 
 999:         // Remove this once parsed URL parameters can be inserted into 'pass'
1000:         for ($i = 0; $i < $count; $i++) {
1001:             $key = $keys[$i];
1002:             if (is_numeric($keys[$i])) {
1003:                 $args[] = $url[$key];
1004:             } else {
1005:                 $named[$key] = $url[$key];
1006:             }
1007:         }
1008: 
1009:         list($args, $named) = array(Hash::filter($args), Hash::filter($named));
1010:         foreach (self::$_prefixes as $prefix) {
1011:             $prefixed = $prefix . '_';
1012:             if (!empty($url[$prefix]) && strpos($url['action'], $prefixed) === 0) {
1013:                 $url['action'] = substr($url['action'], strlen($prefixed) * -1);
1014:                 break;
1015:             }
1016:         }
1017: 
1018:         if (empty($named) && empty($args) && (!isset($url['action']) || $url['action'] === 'index')) {
1019:             $url['action'] = null;
1020:         }
1021: 
1022:         $urlOut = array_filter(array($url['controller'], $url['action']));
1023: 
1024:         if (isset($url['plugin'])) {
1025:             array_unshift($urlOut, $url['plugin']);
1026:         }
1027: 
1028:         foreach (self::$_prefixes as $prefix) {
1029:             if (isset($url[$prefix])) {
1030:                 array_unshift($urlOut, $prefix);
1031:                 break;
1032:             }
1033:         }
1034:         $output = implode('/', $urlOut);
1035: 
1036:         if (!empty($args)) {
1037:             $output .= '/' . implode('/', array_map('rawurlencode', $args));
1038:         }
1039: 
1040:         if (!empty($named)) {
1041:             foreach ($named as $name => $value) {
1042:                 if (is_array($value)) {
1043:                     $flattend = Hash::flatten($value, '%5D%5B');
1044:                     foreach ($flattend as $namedKey => $namedValue) {
1045:                         $output .= '/' . $name . "%5B{$namedKey}%5D" . self::$_namedConfig['separator'] . rawurlencode($namedValue);
1046:                     }
1047:                 } else {
1048:                     $output .= '/' . $name . self::$_namedConfig['separator'] . rawurlencode($value);
1049:                 }
1050:             }
1051:         }
1052:         return $output;
1053:     }
1054: 
1055: /**
1056:  * Generates a well-formed querystring from $q
1057:  *
1058:  * @param string|array $q Query string Either a string of already compiled query string arguments or
1059:  *    an array of arguments to convert into a query string.
1060:  * @param array $extra Extra querystring parameters.
1061:  * @param bool $escape Whether or not to use escaped &
1062:  * @return array
1063:  */
1064:     public static function queryString($q, $extra = array(), $escape = false) {
1065:         if (empty($q) && empty($extra)) {
1066:             return null;
1067:         }
1068:         $join = '&';
1069:         if ($escape === true) {
1070:             $join = '&amp;';
1071:         }
1072:         $out = '';
1073: 
1074:         if (is_array($q)) {
1075:             $q = array_merge($q, $extra);
1076:         } else {
1077:             $out = $q;
1078:             $q = $extra;
1079:         }
1080:         $addition = http_build_query($q, null, $join);
1081: 
1082:         if ($out && $addition && substr($out, strlen($join) * -1, strlen($join)) !== $join) {
1083:             $out .= $join;
1084:         }
1085: 
1086:         $out .= $addition;
1087: 
1088:         if (isset($out[0]) && $out[0] !== '?') {
1089:             $out = '?' . $out;
1090:         }
1091:         return $out;
1092:     }
1093: 
1094: /**
1095:  * Reverses a parsed parameter array into a string.
1096:  *
1097:  * Works similarly to Router::url(), but since parsed URL's contain additional
1098:  * 'pass' and 'named' as well as 'url.url' keys. Those keys need to be specially
1099:  * handled in order to reverse a params array into a string URL.
1100:  *
1101:  * This will strip out 'autoRender', 'bare', 'requested', and 'return' param names as those
1102:  * are used for CakePHP internals and should not normally be part of an output URL.
1103:  *
1104:  * @param CakeRequest|array $params The params array or CakeRequest object that needs to be reversed.
1105:  * @param bool $full Set to true to include the full URL including the protocol when reversing
1106:  *     the URL.
1107:  * @return string The string that is the reversed result of the array
1108:  */
1109:     public static function reverse($params, $full = false) {
1110:         if ($params instanceof CakeRequest) {
1111:             $url = $params->query;
1112:             $params = $params->params;
1113:         } else {
1114:             $url = $params['url'];
1115:         }
1116:         $pass = isset($params['pass']) ? $params['pass'] : array();
1117:         $named = isset($params['named']) ? $params['named'] : array();
1118: 
1119:         unset(
1120:             $params['pass'], $params['named'], $params['paging'], $params['models'], $params['url'], $url['url'],
1121:             $params['autoRender'], $params['bare'], $params['requested'], $params['return'],
1122:             $params['_Token']
1123:         );
1124:         $params = array_merge($params, $pass, $named);
1125:         if (!empty($url)) {
1126:             $params['?'] = $url;
1127:         }
1128:         return Router::url($params, $full);
1129:     }
1130: 
1131: /**
1132:  * Normalizes a URL for purposes of comparison.
1133:  *
1134:  * Will strip the base path off and replace any double /'s.
1135:  * It will not unify the casing and underscoring of the input value.
1136:  *
1137:  * @param array|string $url URL to normalize Either an array or a string URL.
1138:  * @return string Normalized URL
1139:  */
1140:     public static function normalize($url = '/') {
1141:         if (is_array($url)) {
1142:             $url = Router::url($url);
1143:         }
1144:         if (preg_match('/^[a-z\-]+:\/\//', $url)) {
1145:             return $url;
1146:         }
1147:         $request = Router::getRequest();
1148: 
1149:         if (!empty($request->base) && stristr($url, $request->base)) {
1150:             $url = preg_replace('/^' . preg_quote($request->base, '/') . '/', '', $url, 1);
1151:         }
1152:         $url = '/' . $url;
1153: 
1154:         while (strpos($url, '//') !== false) {
1155:             $url = str_replace('//', '/', $url);
1156:         }
1157:         $url = preg_replace('/(?:(\/$))/', '', $url);
1158: 
1159:         if (empty($url)) {
1160:             return '/';
1161:         }
1162:         return $url;
1163:     }
1164: 
1165: /**
1166:  * Returns the route matching the current request URL.
1167:  *
1168:  * @return CakeRoute Matching route object.
1169:  */
1170:     public static function requestRoute() {
1171:         return self::$_currentRoute[0];
1172:     }
1173: 
1174: /**
1175:  * Returns the route matching the current request (useful for requestAction traces)
1176:  *
1177:  * @return CakeRoute Matching route object.
1178:  */
1179:     public static function currentRoute() {
1180:         $count = count(self::$_currentRoute) - 1;
1181:         return ($count >= 0) ? self::$_currentRoute[$count] : false;
1182:     }
1183: 
1184: /**
1185:  * Removes the plugin name from the base URL.
1186:  *
1187:  * @param string $base Base URL
1188:  * @param string $plugin Plugin name
1189:  * @return string base URL with plugin name removed if present
1190:  */
1191:     public static function stripPlugin($base, $plugin = null) {
1192:         if ($plugin) {
1193:             $base = preg_replace('/(?:' . $plugin . ')/', '', $base);
1194:             $base = str_replace('//', '', $base);
1195:             $pos1 = strrpos($base, '/');
1196:             $char = strlen($base) - 1;
1197: 
1198:             if ($pos1 === $char) {
1199:                 $base = substr($base, 0, $char);
1200:             }
1201:         }
1202:         return $base;
1203:     }
1204: 
1205: /**
1206:  * Instructs the router to parse out file extensions from the URL.
1207:  *
1208:  * For example, http://example.com/posts.rss would yield a file extension of "rss".
1209:  * The file extension itself is made available in the controller as
1210:  * `$this->params['ext']`, and is used by the RequestHandler component to
1211:  * automatically switch to alternate layouts and templates, and load helpers
1212:  * corresponding to the given content, i.e. RssHelper. Switching layouts and helpers
1213:  * requires that the chosen extension has a defined mime type in `CakeResponse`
1214:  *
1215:  * A list of valid extension can be passed to this method, i.e. Router::parseExtensions('rss', 'xml');
1216:  * If no parameters are given, anything after the first . (dot) after the last / in the URL will be
1217:  * parsed, excluding querystring parameters (i.e. ?q=...).
1218:  *
1219:  * @return void
1220:  * @see RequestHandler::startup()
1221:  */
1222:     public static function parseExtensions() {
1223:         self::$_parseExtensions = true;
1224:         if (func_num_args() > 0) {
1225:             self::setExtensions(func_get_args(), false);
1226:         }
1227:     }
1228: 
1229: /**
1230:  * Get the list of extensions that can be parsed by Router.
1231:  *
1232:  * To initially set extensions use `Router::parseExtensions()`
1233:  * To add more see `setExtensions()`
1234:  *
1235:  * @return array Array of extensions Router is configured to parse.
1236:  */
1237:     public static function extensions() {
1238:         if (!self::$initialized) {
1239:             self::_loadRoutes();
1240:         }
1241: 
1242:         return self::$_validExtensions;
1243:     }
1244: 
1245: /**
1246:  * Set/add valid extensions.
1247:  *
1248:  * To have the extensions parsed you still need to call `Router::parseExtensions()`
1249:  *
1250:  * @param array $extensions List of extensions to be added as valid extension
1251:  * @param bool $merge Default true will merge extensions. Set to false to override current extensions
1252:  * @return array
1253:  */
1254:     public static function setExtensions($extensions, $merge = true) {
1255:         if (!is_array($extensions)) {
1256:             return self::$_validExtensions;
1257:         }
1258:         if (!$merge) {
1259:             return self::$_validExtensions = $extensions;
1260:         }
1261:         return self::$_validExtensions = array_merge(self::$_validExtensions, $extensions);
1262:     }
1263: 
1264: /**
1265:  * Loads route configuration
1266:  *
1267:  * @return void
1268:  */
1269:     protected static function _loadRoutes() {
1270:         self::$initialized = true;
1271:         include APP . 'Config' . DS . 'routes.php';
1272:     }
1273: 
1274: }
1275: 
1276: //Save the initial state
1277: Router::reload();
1278: 
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