567 lines
16 KiB
PHP
567 lines
16 KiB
PHP
<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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* @link https://cakephp.org CakePHP(tm) Project
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* @since CakePHP(tm) v 1.3
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* @license https://opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Hash', 'Utility');
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/**
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* A single Route used by the Router to connect requests to
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* parameter maps.
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*
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* Not normally created as a standalone. Use Router::connect() to create
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* Routes for your application.
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*
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* @package Cake.Routing.Route
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*/
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class CakeRoute {
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/**
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* An array of named segments in a Route.
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* `/:controller/:action/:id` has 3 key elements
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*
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* @var array
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*/
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public $keys = array();
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/**
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* An array of additional parameters for the Route.
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*
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* @var array
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*/
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public $options = array();
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/**
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* Default parameters for a Route
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*
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* @var array
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*/
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public $defaults = array();
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/**
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* The routes template string.
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*
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* @var string
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*/
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public $template = null;
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/**
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* Is this route a greedy route? Greedy routes have a `/*` in their
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* template
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*
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* @var string
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*/
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protected $_greedy = false;
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/**
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* The compiled route regular expression
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*
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* @var string
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*/
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protected $_compiledRoute = null;
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/**
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* HTTP header shortcut map. Used for evaluating header-based route expressions.
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*
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* @var array
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*/
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protected $_headerMap = array(
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'type' => 'content_type',
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'method' => 'request_method',
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'server' => 'server_name'
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);
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/**
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* Constructor for a Route
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*
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* @param string $template Template string with parameter placeholders
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* @param array $defaults Array of defaults for the route.
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* @param array $options Array of additional options for the Route
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*/
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public function __construct($template, $defaults = array(), $options = array()) {
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$this->template = $template;
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$this->defaults = (array)$defaults;
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$this->options = (array)$options;
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}
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/**
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* Check if a Route has been compiled into a regular expression.
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*
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* @return bool
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*/
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public function compiled() {
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return !empty($this->_compiledRoute);
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}
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/**
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* Compiles the route's regular expression.
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*
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* Modifies defaults property so all necessary keys are set
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* and populates $this->names with the named routing elements.
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*
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* @return array Returns a string regular expression of the compiled route.
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*/
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public function compile() {
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if ($this->compiled()) {
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return $this->_compiledRoute;
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}
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$this->_writeRoute();
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return $this->_compiledRoute;
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}
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/**
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* Builds a route regular expression.
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*
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* Uses the template, defaults and options properties to compile a
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* regular expression that can be used to parse request strings.
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*
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* @return void
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*/
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protected function _writeRoute() {
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if (empty($this->template) || ($this->template === '/')) {
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$this->_compiledRoute = '#^/*$#';
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$this->keys = array();
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return;
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}
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$route = $this->template;
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$names = $routeParams = array();
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$parsed = preg_quote($this->template, '#');
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preg_match_all('#:([A-Za-z0-9_-]+[A-Z0-9a-z])#', $route, $namedElements);
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foreach ($namedElements[1] as $i => $name) {
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$search = '\\' . $namedElements[0][$i];
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if (isset($this->options[$name])) {
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$option = null;
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if ($name !== 'plugin' && array_key_exists($name, $this->defaults)) {
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$option = '?';
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}
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$slashParam = '/\\' . $namedElements[0][$i];
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if (strpos($parsed, $slashParam) !== false) {
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$routeParams[$slashParam] = '(?:/(?P<' . $name . '>' . $this->options[$name] . ')' . $option . ')' . $option;
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} else {
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$routeParams[$search] = '(?:(?P<' . $name . '>' . $this->options[$name] . ')' . $option . ')' . $option;
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}
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} else {
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$routeParams[$search] = '(?:(?P<' . $name . '>[^/]+))';
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}
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$names[] = $name;
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}
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if (preg_match('#\/\*\*$#', $route)) {
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$parsed = preg_replace('#/\\\\\*\\\\\*$#', '(?:/(?P<_trailing_>.*))?', $parsed);
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$this->_greedy = true;
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}
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if (preg_match('#\/\*$#', $route)) {
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$parsed = preg_replace('#/\\\\\*$#', '(?:/(?P<_args_>.*))?', $parsed);
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$this->_greedy = true;
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}
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krsort($routeParams);
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$parsed = str_replace(array_keys($routeParams), array_values($routeParams), $parsed);
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$this->_compiledRoute = '#^' . $parsed . '[/]*$#';
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$this->keys = $names;
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// Remove defaults that are also keys. They can cause match failures
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foreach ($this->keys as $key) {
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unset($this->defaults[$key]);
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}
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$keys = $this->keys;
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sort($keys);
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$this->keys = array_reverse($keys);
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}
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/**
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* Checks to see if the given URL can be parsed by this route.
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*
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* If the route can be parsed an array of parameters will be returned; if not
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* false will be returned. String URLs are parsed if they match a routes regular expression.
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*
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* @param string $url The URL to attempt to parse.
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* @return mixed Boolean false on failure, otherwise an array or parameters
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*/
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public function parse($url) {
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if (!$this->compiled()) {
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$this->compile();
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}
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if (!preg_match($this->_compiledRoute, urldecode($url), $route)) {
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return false;
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}
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foreach ($this->defaults as $key => $val) {
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$key = (string)$key;
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if ($key[0] === '[' && preg_match('/^\[(\w+)\]$/', $key, $header)) {
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if (isset($this->_headerMap[$header[1]])) {
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$header = $this->_headerMap[$header[1]];
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} else {
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$header = 'http_' . $header[1];
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}
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$header = strtoupper($header);
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$val = (array)$val;
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$h = false;
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foreach ($val as $v) {
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if (env($header) === $v) {
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$h = true;
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}
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}
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if (!$h) {
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return false;
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}
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}
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}
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array_shift($route);
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$count = count($this->keys);
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for ($i = 0; $i <= $count; $i++) {
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unset($route[$i]);
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}
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$route['pass'] = $route['named'] = array();
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// Assign defaults, set passed args to pass
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foreach ($this->defaults as $key => $value) {
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if (isset($route[$key])) {
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continue;
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}
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if (is_int($key)) {
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$route['pass'][] = $value;
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continue;
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}
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$route[$key] = $value;
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}
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if (isset($route['_args_'])) {
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list($pass, $named) = $this->_parseArgs($route['_args_'], $route);
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$route['pass'] = array_merge($route['pass'], $pass);
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$route['named'] = $named;
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unset($route['_args_']);
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}
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if (isset($route['_trailing_'])) {
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$route['pass'][] = $route['_trailing_'];
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unset($route['_trailing_']);
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}
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// restructure 'pass' key route params
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if (isset($this->options['pass'])) {
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$j = count($this->options['pass']);
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while ($j--) {
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if (isset($route[$this->options['pass'][$j]])) {
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array_unshift($route['pass'], $route[$this->options['pass'][$j]]);
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}
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}
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}
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return $route;
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}
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/**
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* Parse passed and Named parameters into a list of passed args, and a hash of named parameters.
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* The local and global configuration for named parameters will be used.
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*
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* @param string $args A string with the passed & named params. eg. /1/page:2
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* @param string $context The current route context, which should contain controller/action keys.
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* @return array Array of ($pass, $named)
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*/
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protected function _parseArgs($args, $context) {
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$pass = $named = array();
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$args = explode('/', $args);
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$namedConfig = Router::namedConfig();
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$greedy = $namedConfig['greedyNamed'];
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$rules = $namedConfig['rules'];
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if (!empty($this->options['named'])) {
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$greedy = isset($this->options['greedyNamed']) && $this->options['greedyNamed'] === true;
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foreach ((array)$this->options['named'] as $key => $val) {
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if (is_numeric($key)) {
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$rules[$val] = true;
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continue;
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}
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$rules[$key] = $val;
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}
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}
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foreach ($args as $param) {
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if (empty($param) && $param !== '0' && $param !== 0) {
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continue;
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}
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$separatorIsPresent = strpos($param, $namedConfig['separator']) !== false;
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if ((!isset($this->options['named']) || !empty($this->options['named'])) && $separatorIsPresent) {
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list($key, $val) = explode($namedConfig['separator'], $param, 2);
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$hasRule = isset($rules[$key]);
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$passIt = (!$hasRule && !$greedy) || ($hasRule && !$this->_matchNamed($val, $rules[$key], $context));
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if ($passIt) {
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$pass[] = $param;
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} else {
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if (preg_match_all('/\[([A-Za-z0-9_-]+)?\]/', $key, $matches, PREG_SET_ORDER)) {
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$matches = array_reverse($matches);
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$parts = explode('[', $key);
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$key = array_shift($parts);
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$arr = $val;
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foreach ($matches as $match) {
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if (empty($match[1])) {
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$arr = array($arr);
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} else {
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$arr = array(
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$match[1] => $arr
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);
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}
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}
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$val = $arr;
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}
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$named = array_merge_recursive($named, array($key => $val));
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}
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} else {
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$pass[] = $param;
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}
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}
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return array($pass, $named);
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}
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/**
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* Check if a named parameter matches the current rules.
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*
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* Return true if a given named $param's $val matches a given $rule depending on $context.
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* Currently implemented rule types are controller, action and match that can be combined with each other.
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*
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* @param string $val The value of the named parameter
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* @param array $rule The rule(s) to apply, can also be a match string
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* @param string $context An array with additional context information (controller / action)
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* @return bool
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*/
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protected function _matchNamed($val, $rule, $context) {
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if ($rule === true || $rule === false) {
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return $rule;
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}
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if (is_string($rule)) {
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$rule = array('match' => $rule);
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}
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if (!is_array($rule)) {
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return false;
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}
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$controllerMatches = (
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!isset($rule['controller'], $context['controller']) ||
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in_array($context['controller'], (array)$rule['controller'])
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);
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if (!$controllerMatches) {
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return false;
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}
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$actionMatches = (
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!isset($rule['action'], $context['action']) ||
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in_array($context['action'], (array)$rule['action'])
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);
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if (!$actionMatches) {
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return false;
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}
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return (!isset($rule['match']) || preg_match('/' . $rule['match'] . '/', $val));
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}
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/**
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* Apply persistent parameters to a URL array. Persistent parameters are a special
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* key used during route creation to force route parameters to persist when omitted from
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* a URL array.
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*
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* @param array $url The array to apply persistent parameters to.
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* @param array $params An array of persistent values to replace persistent ones.
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* @return array An array with persistent parameters applied.
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*/
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public function persistParams($url, $params) {
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if (empty($this->options['persist']) || !is_array($this->options['persist'])) {
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return $url;
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}
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foreach ($this->options['persist'] as $persistKey) {
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if (array_key_exists($persistKey, $params) && !isset($url[$persistKey])) {
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$url[$persistKey] = $params[$persistKey];
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}
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}
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return $url;
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}
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/**
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* Check if a URL array matches this route instance.
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*
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* If the URL matches the route parameters and settings, then
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* return a generated string URL. If the URL doesn't match the route parameters, false will be returned.
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* This method handles the reverse routing or conversion of URL arrays into string URLs.
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*
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* @param array $url An array of parameters to check matching with.
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* @return mixed Either a string URL for the parameters if they match or false.
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*/
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public function match($url) {
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if (!$this->compiled()) {
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$this->compile();
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}
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$defaults = $this->defaults;
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if (isset($defaults['prefix'])) {
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$url['prefix'] = $defaults['prefix'];
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}
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//check that all the key names are in the url
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$keyNames = array_flip($this->keys);
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if (array_intersect_key($keyNames, $url) !== $keyNames) {
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return false;
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}
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// Missing defaults is a fail.
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if (array_diff_key($defaults, $url) !== array()) {
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return false;
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}
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$namedConfig = Router::namedConfig();
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$prefixes = Router::prefixes();
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$greedyNamed = $namedConfig['greedyNamed'];
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$allowedNamedParams = $namedConfig['rules'];
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$named = $pass = array();
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foreach ($url as $key => $value) {
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// keys that exist in the defaults and have different values is a match failure.
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$defaultExists = array_key_exists($key, $defaults);
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if ($defaultExists && $defaults[$key] != $value) {
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return false;
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} elseif ($defaultExists) {
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continue;
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}
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// If the key is a routed key, its not different yet.
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if (array_key_exists($key, $keyNames)) {
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continue;
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}
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// pull out passed args
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$numeric = is_numeric($key);
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if ($numeric && isset($defaults[$key]) && $defaults[$key] == $value) {
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continue;
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} elseif ($numeric) {
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$pass[] = $value;
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unset($url[$key]);
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continue;
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}
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// pull out named params if named params are greedy or a rule exists.
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if (($greedyNamed || isset($allowedNamedParams[$key])) &&
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($value !== false && $value !== null) &&
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(!in_array($key, $prefixes))
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) {
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$named[$key] = $value;
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continue;
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}
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// keys that don't exist are different.
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if (!$defaultExists && !empty($value)) {
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return false;
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}
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}
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//if a not a greedy route, no extra params are allowed.
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if (!$this->_greedy && (!empty($pass) || !empty($named))) {
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return false;
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}
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//check patterns for routed params
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if (!empty($this->options)) {
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foreach ($this->options as $key => $pattern) {
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if (array_key_exists($key, $url) && !preg_match('#^' . $pattern . '$#', $url[$key])) {
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return false;
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}
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}
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}
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return $this->_writeUrl(array_merge($url, compact('pass', 'named')));
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}
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/**
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* Converts a matching route array into a URL string.
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*
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* Composes the string URL using the template
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* used to create the route.
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*
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* @param array $params The params to convert to a string URL.
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* @return string Composed route string.
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*/
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protected function _writeUrl($params) {
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if (isset($params['prefix'])) {
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$prefixed = $params['prefix'] . '_';
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}
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if (isset($prefixed, $params['action']) && strpos($params['action'], $prefixed) === 0) {
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$params['action'] = substr($params['action'], strlen($prefixed));
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unset($params['prefix']);
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}
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if (is_array($params['pass'])) {
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$params['pass'] = implode('/', array_map('rawurlencode', $params['pass']));
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}
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$namedConfig = Router::namedConfig();
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$separator = $namedConfig['separator'];
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if (!empty($params['named']) && is_array($params['named'])) {
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$named = array();
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foreach ($params['named'] as $key => $value) {
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if (is_array($value)) {
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$flat = Hash::flatten($value, '%5D%5B');
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foreach ($flat as $namedKey => $namedValue) {
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$named[] = $key . "%5B{$namedKey}%5D" . $separator . rawurlencode($namedValue);
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}
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} else {
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$named[] = $key . $separator . rawurlencode($value);
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}
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}
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$params['pass'] = $params['pass'] . '/' . implode('/', $named);
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}
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$out = $this->template;
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if (!empty($this->keys)) {
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$search = $replace = array();
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foreach ($this->keys as $key) {
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$string = null;
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if (isset($params[$key])) {
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$string = $params[$key];
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} elseif (strpos($out, $key) != strlen($out) - strlen($key)) {
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$key .= '/';
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}
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$search[] = ':' . $key;
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$replace[] = $string;
|
|
}
|
|
$out = str_replace($search, $replace, $out);
|
|
}
|
|
|
|
if (strpos($this->template, '**') !== false) {
|
|
$out = str_replace('**', $params['pass'], $out);
|
|
$out = str_replace('%2F', '/', $out);
|
|
} elseif (strpos($this->template, '*') !== false) {
|
|
$out = str_replace('*', $params['pass'], $out);
|
|
}
|
|
$out = str_replace('//', '/', $out);
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Set state magic method to support var_export
|
|
*
|
|
* This method helps for applications that want to implement
|
|
* router caching.
|
|
*
|
|
* @param array $fields Key/Value of object attributes
|
|
* @return CakeRoute A new instance of the route
|
|
*/
|
|
public static function __set_state($fields) {
|
|
$class = function_exists('get_called_class') ? get_called_class() : __CLASS__;
|
|
$obj = new $class('');
|
|
foreach ($fields as $field => $value) {
|
|
$obj->$field = $value;
|
|
}
|
|
return $obj;
|
|
}
|
|
|
|
}
|