<?php
/**
 * Common code for DAVAdmin.
 *
 * @author Jan Dittberner <jan@dittberner.info>
 * @version $Id$
 * @license GPL
 * @package DAVAdmin
 *
 * Copyright (c) 2007 Jan Dittberner
 *
 * This file is part of DAVAdmin.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

if (!isset($_SERVER['DavAdminConfDir'])) {
  header('HTTP/1.0 500 Internal Server Error');
  header('Status: 500 Internal Server Error');
  header('Content-Type: text/plain;charset=utf8');
  print(_("The Server is not configured correctly. Please tell your Administrator to set the DavAdminConfDir environment variable."));
  exit();
}

/** Include configuration information. */
require_once($_SERVER['DavAdminConfDir'] . '/config.inc.php');

/** DAV administrator group name. */
define(ADMIN_GROUP, 'davadmin');

/** Include the Smarty template engine. */
require_once("smarty/libs/Smarty.class.php");

/** Global Smarty template engine instance. */
$smarty = new Smarty();
$smarty->compile_dir = $davconfig['compile_dir'];

/** Handle invalid requests to the application. */
function invalidCall() {
  header("Content-Type: text/plain; charset=UTF-8");
  print(_("Invalid call!"));
  die();
}

/** Handle errors with an XML message. */
function errorAsXml($errormsg) {
  header("Content-Type: text/xml; charset=UTF-8");
  $GLOBALS['smarty']->assign("errormsg", $errormsg);
  $GLOBALS['smarty']->display("error.xml");  
  die();
}

/** Handle errors with an HTML error page. */
function errorAsHtml($errormsg) {
  header("Content-Type: text/html; charset=UTF-8");
  $GLOBALS['smarty']->assign("errormsg", $errormsg);
  $GLOBALS['smarty']->display("error.html");  
  die();
}

function getFullPath($dirname) {
  return $GLOBALS['davconfig']['dav.dir'] . DIRECTORY_SEPARATOR . $dirname;
}

// check configuration
$errmsgs = array();
if (!isset($davconfig['digest.file'])) {
  array_push($errmsgs,
             _("digest.file is not defined."));
} elseif (!is_readable($davconfig['digest.file']) ||
          !is_writable($davconfig['digest.file'])) {
  array_push($errmsgs,
             _("The specified digest file is not readable and writable."));
}
if (!isset($davconfig['group.file'])) {
  array_push($errmsgs,
             _("group.file is not defined."));
} elseif (!is_readable($davconfig['group.file']) ||
          !is_writable($davconfig['group.file'])) {
  array_push($errmsgs,
             _("The specified group file is not readable and writable."));
}
if (!isset($davconfig['namemap.file'])) {
  array_push($errmsgs,
             _("namemap.file is not defined."));
} elseif (!is_readable($davconfig['namemap.file']) ||
          !is_writable($davconfig['namemap.file'])) {
  array_push($errmsgs,
             _("The specified name mapping file is not readable and writable."));
}
if (!isset($davconfig['dav.dir'])) {
  array_push($errmsgs,
             _("dav.dir is not defined."));
} elseif (!is_dir($davconfig['dav.dir']) ||
          !is_readable($davconfig['dav.dir']) ||
          !is_writable($davconfig['dav.dir'])) {
  array_push($errmsgs,
             _("The specified DAV directory is no directory or not accessable."));
}
if (empty($davconfig['dav.realm'])) {
  array_push($errmsgs,
             _("dav.realm is not defined."));
}
if (empty($davconfig['dav.uri'])) {
  array_push($errmsgs,
             _("dav.uri is not defined."));
}
if (!empty($errmsgs)) {
  errorAsHtml(implode("<br />", $errmsgs));
}

function cmp_by_usernames($user1, $user2) {
  return strcmp($user1['username'], $user2['username']);
}

$namemapdata = file_get_contents($davconfig['namemap.file']);
$namemap = json_decode($namemapdata, true);
uasort($namemap, "cmp_by_usernames");
?>