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<?php /* Copyright (c) 2024 Freya Murphy */
class Router {
private $ldap;
private $auth;
private $domain;
function __construct() {
$this->ldap = new LDAPHelper();
$this->auth = new AuthHelper();
$this->domain = getenv("HTTP_HOST");
}
/**
* Displays a page to the user
* @param string $file
* @param array<string,mixed> $data
*/
private function send_page(
string $file,
array $data = array()
): void {
extract($data);
$webroot = $GLOBALS['webroot'];
require($webroot . '/views/header.php');
require($webroot . "/views/$file.php");
require($webroot . '/views/footer.php');
}
/**
* Displays a message to the user (message page)
* @param string $title
* @param string $msg
* @param int $code
*/
private function send_message(
string $title,
string $msg
): void {
$this->send_page('message', array(
'title' => $title,
'msg' => $msg
));
}
/**
* Gets the HTTP request information
*/
private function get_req(): array {
$path = $_SERVER['REQUEST_URI'];
$method = $_SERVER['REQUEST_METHOD'];
return [$method, $path];
}
/**
* @param array<string> $fields
*/
private function get_post_info(
string ...$fields
): ?array {
$values = array();
try {
$temp = NULL;
parse_str(file_get_contents('php://input'), $temp);
foreach ($temp as $key => $value) {
$_POST[$key] = $value;
}
} catch (Exception $_e) {}
foreach ($fields as $key) {
if (!isset($_POST[$key]))
return NULL;
$values[$key] = $_POST[$key];
}
return $values;
}
private function handle_login(): void {
$info = $this->get_post_info('username', 'password');
if ($info == NULL) {
http_response_code(400);
$this->send_message('400', 'Credentials were not supplied');
return;
}
$user = $this->ldap->search($info['username']);
if ($user == NULL || !count($user)) {
http_response_code(400);
$this->send_message('Error', 'User does not exist');
return;
}
$user = $user[0];
if ($this->ldap->bind(
$user->dn,
$info['password']
)) {
http_response_code(400);
$this->send_message('Error', 'Invalid Credentials');
return;
}
$session = $this->auth->create_session($user);
http_response_code(200);
$session->write_headers();
$this->send_message('Success', 'Authenticated. You can now go back to your content');
}
private function handle_logout(): void {
$session = $this->auth->get_session();
if ($session == NULL) {
http_response_code(303);
header("Location: http://{$this->domain}/login");
return;
}
if ($this->auth->delete_session($session)) {
http_response_code(500);
$this->send_message('Error',
'Could not log out.');
return;
}
http_response_code(200);
$this->send_message('Logged Out',
'You have been logged out successfully.');
}
private function handle_auth(): void {
$session = $this->auth->get_session();
if ($session == NULL) {
// redirect them to login
http_response_code(303);
header("Location: http://{$this->domain}/login");
} else {
// update session expiry
$session->reset_expiry();
$this->auth->save_session($session);
// send auth info
http_response_code(200);
$session->write_headers();
$this->send_message('Authenticated',
'You are already logged in.<br><br><a href="logout">Log Out</a>');
}
}
private function page_login(): void {
http_response_code(200);
$this->send_page('login', array(
'title' => 'Login'
));
}
private function page_not_found(): void {
http_response_code(404);
$this->send_message('404', 'Not Found');
}
public function handle(): void {
match ($this->get_req()) {
['GET', '/'] => $this->handle_auth(),
['GET', '/login'] => $this->page_login(),
['POST', '/login'] => $this->handle_login(),
['GET', '/logout'] => $this->handle_logout(),
_ => $this->page_not_found()
};
}
}
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