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<?php /* Copyright (c) 2024 Freya Murphy */
class Router {
// the loader
private $load;
// the main model
private $main;
// the database
private $db;
private $db_ready;
/**
* Creates a router
* @param Loader $load - the main laoder object
*/
function __construct($load) {
$this->load = $load;
$this->db = $load->db();
$this->main = $this->load->model('main');
$this->db_ready = file_exists('/status/ready');
}
/**
* @param string $path - the current request path
* Gets the current route
* @return array<string,mixed>
*/
private function get_req_route($path): array {
// trim the path
$path = trim($path);
// remove first '/'
$path = substr($path, 1);
// get path parts
$parts = explode('/', $path);
$len = count($parts);
// get route info
$route = array();
// e.g. /
if ($path === '') {
$route = array(
'app' => '',
'slug' => 'index',
);
// e.g. /home /login
} else if ($len === 1) {
$route = array(
'app' => $parts[0],
'slug' => 'index',
);
// e.g. /home/posts
} else {
$route = array (
'app' => implode('/', array_slice($parts, 0, -1)),
'slug' => end($parts)
);
};
$routes = $GLOBALS['routes'];
if (array_key_exists($route['app'], $routes)) {
$parts = explode('/', $routes[$route['app']]);
if (count($parts) == 1) {
$route['app'] = $parts[0];
} else {
$route['app'] = $parts[0];
$route['slug'] = $parts[1];
}
}
return $route;
}
/**
* Gets the users ip
*/
private function get_ip(): string {
$ip = '';
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
/**
* Gets the curret request info
* @return array<string,mixed>
*/
private function get_req(): array|bool {
$method = $_SERVER['REQUEST_METHOD'];
$uri_str = $_SERVER['REQUEST_URI'];
$uri = parse_url($uri_str);
if (!$uri) {
return FALSE;
}
$path = '';
if (array_key_exists('path', $uri)) {
$path = $uri['path'];
}
return array_merge(
array(
'uri' => $uri,
'uri_str' => $uri_str,
'method' => $method,
'ip' => $this->get_ip()
),
$this->get_req_route($path),
);
}
/**
* Handles a router error code
* @param int $code - the http error code
* @param bool $recursed
*/
private function handle_error($code, $recursed): void {
if ($recursed) {
die($code . ' (recursed)');
}
$uri_str = $_SERVER['REQUEST_URI'];
$req = array();
$req['slug'] = 'index';
$req['app'] = 'error';
$req['uri_str'] = $uri_str;
$this->main->info = $req;
$_GET['code'] = $code;
$this->handle_req($req, TRUE);
}
private function load_htc($req, $recursed): void {
$parts = explode('/', $req['uri_str']);
$file = end($parts);
$path = $GLOBALS['publicroot'] . '/polyfills/' . $file;
if (file_exists($path)) {
header('Content-type: text/x-component');
include($path);
} else {
$this->handle_error(400, $recursed);
}
}
/**
* @param array $req
* @param bool $recursed
*/
private function handle_req($req, $recursed = FALSE): void {
if ($recursed === false) {
if (
$this->db_ready === false &&
in_array($req['app'], $GLOBALS['serviceable']) === false
) {
$this->handle_error(503, $recursed);
return;
}
if ($this->check_banned($req)) {
$this->handle_error(401, $recursed);
return;
}
}
if (!$req) {
$this->handle_error(500, $recursed);
return;
}
if (str_ends_with($req['uri_str'], '.htc')) {
$this->load_htc($req, $recursed);
return;
}
$controller = $this->load->controller($req['app']);
if ($controller === NULL) {
$this->handle_error(404, $recursed);
return;
}
$ref = NULL;
try {
$ref = new ReflectionMethod($controller, $req['slug']);
} catch (Exception $_e) {}
if ($ref === NULL || !$ref->isPublic()) {
$this->handle_error(404, $recursed);
return;
}
$ref->invoke($controller);
}
private function log_request($req): void {
if (
$req === FALSE ||
$this->db_ready === FALSE ||
in_array($req['app'], $GLOBALS['serviceable'])
) {
return;
}
$query = $this->db
->insert_into('admin.request_log',
'ip', 'method', 'uri')
->values(
$req['ip'], $req['method'], $req['uri_str']);
$query->execute();
}
private function check_banned($req) {
$ip = FALSE;
if ($req) {
$ip = $req['ip'];
} else {
$ip = $this->get_ip();
}
$query = $this->db
->select('TRUE')
->from('admin.banned')
->where('ip')->eq($ip);
return !!($query->row());
}
/**
* Handels the incomming reuqest
*/
public function handle_request(): void {
$req = $this->get_req();
$this->log_request($req);
$this->main->info = $req;
$this->handle_req($req);
}
}
|
