<?php
require_once('../header.inc.php');

//  Provides HTTP Basic authentication of a user, and sets two variables, sId and username,
//  with the user's info.

function authenticate() {
	header('WWW-Authenticate: Basic realm="SemanticScuttle API"');
	header('HTTP/1.0 401 Unauthorized');

	die(T_("Use of the API calls requires authentication."));
}

if(!$userservice->isLoggedOn()) {
	/* Maybe we have caught authentication data in $_SERVER['REMOTE_USER']
	 ( Inspired by http://www.yetanothercommunitysystem.com/article-321-regle-comment-utiliser-l-authentification-http-en-php-chez-ovh ) */
	if((!isset($_SERVER['PHP_AUTH_USER']) || !isset($_SERVER['PHP_AUTH_PW']))
	&& preg_match('/Basic\s+(.*)$/i', $_SERVER['REMOTE_USER'], $matches)) {
		list($name, $password) = explode(':', base64_decode($matches[1]));
		$_SERVER['PHP_AUTH_USER'] = strip_tags($name);
		$_SERVER['PHP_AUTH_PW'] = strip_tags($password);
	}

	if (!isset($_SERVER['PHP_AUTH_USER'])) {
		authenticate();
	} else {
		$login = $userservice->login($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
		if (!$login) {
			authenticate();
		}
	}
}
?>