114 lines
2.8 KiB
PHP
114 lines
2.8 KiB
PHP
<?php
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require_once "website.php";
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class RuleEngine
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{
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/**
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* @param Website $site
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* @param array $urlConfig
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* @return URLRoute
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*/
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public static function findRoute(Website $site, array $urlConfig): URLRoute
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{
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if ($site->isProd())
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$requri = $_SERVER['REQUEST_URI'];
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else
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$requri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : 'localhost:80/';
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$parse = parse_url($requri);
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$path = isset($parse['path']) ? $parse['path'] : '';
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$pathparts = preg_split('@/@', $path, NULL, PREG_SPLIT_NO_EMPTY);
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$partcount = count($pathparts);
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foreach ($urlConfig as $rule)
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{
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$route = self::testRule($site, $rule, $requri, $pathparts, $partcount);
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if ($route === null) continue;
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if ($route->needsAdminLogin && !$site->isLoggedInByCookie()) return URLRoute::getLoginRoute($route, $requri);
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return $route;
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}
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return URLRoute::getNotFoundRoute($requri);
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}
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private static function testRule(Website $site, array $rule, string $requri, array $pathparts, int $partcount)
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{
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if ($partcount !== count($rule['url'])) return null;
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$urlparams = [];
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$match = true;
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for($i = 0; $i < $partcount; $i++)
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{
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$comp = $rule['url'][$i];
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if (startsWith($comp, '?{') && endsWith($comp, '}'))
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{
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$ident = substr($comp, 2, strlen($comp)-3);
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$urlparams[$ident] = $pathparts[$i];
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}
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else if ($comp === '*')
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{
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if (!isset($urlparams['*'])) $urlparams['*'] = [];
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$urlparams['*'] []= $pathparts[$i];
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}
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else
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{
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if (strtolower($comp) !== strtolower($pathparts[$i])) { $match = false; break; }
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}
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}
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if (!$match) return null;
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$route = new URLRoute($rule['target'], $requri);
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foreach($rule['parameter'] as $optname => $optvalue)
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{
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$value = $optvalue;
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if ($value === '%GET%')
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{
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if (!isset($_GET[$optname])) { $match = false; break; }
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$value = $_GET[$optname];
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}
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else if ($value === '%POST%')
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{
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if (!isset($_POST[$optname])) { $match = false; break; }
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$value = $_POST[$optname];
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}
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else if ($value === '%URL%')
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{
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if (!isset($urlparams[$optname])) { $match = false; break; }
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$value = urldecode($urlparams[$optname]);
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}
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$route->parameter[strtolower($optname)] = $value;
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}
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if (!$match) return null;
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$route->urlParameter = $urlparams;
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$ctrlOpt = $rule['options'];
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if (in_array('disabled', $ctrlOpt)) return null;
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if (in_array('api', $ctrlOpt)) $route->isAPI = true;
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if (isset($ctrlOpt['method']) && $_SERVER["REQUEST_METHOD"] !== $ctrlOpt['method']) return null;
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$route->needsAdminLogin = in_array('password', $ctrlOpt);
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if ($site->isProd() && isHTTPRequest() && !in_array('http', $ctrlOpt))
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{
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// enforce https
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$redirect = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
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header('HTTP/1.1 301 Moved Permanently');
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header('Location: ' . $redirect);
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exit();
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}
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return $route;
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}
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}
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