<?php
/* $Id: index.php 4 2004-08-10 00:36:34Z eroberts $ */
ob_start();

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");

define("BROWSER",TRUE);

require("initialize.php");

if ($_GET['expired'] == "true") {
  session_destroy();
  $smarty->display("header.tpl");
  $smarty->display("expired.tpl");
  $smarty->display("footer.tpl");
  ob_flush();
  exit;
}

set_time_limit(_MINUTE_);

if (!empty($_SESSION['ip'])
and ($_SESSION['ip'] != $_SERVER['REMOTE_ADDR'])) {
  session_destroy();
  header("Location: "._URL_);
}

if ($_GET['logout'] == "true") {
  session_destroy();
  if ($_GET['session_expired'] == "true") {
    header("Location: "._URL_."?session_expired=true");
  } else {
    header("Location: "._URL_);
  }
}

if (!empty($_POST['username']) and !empty($_POST['password'])) {
  authenticate($_POST['username'],$_POST['password']);
}

if (isset($_SESSION['userid'])) {
  $_SESSION['groups'] = user_groups($_SESSION['userid']);
  $_SESSION['group_count'] = count($_SESSION['groups']);
  $_SESSION['prefs'] = user_preferences($_SESSION['userid']);
}

if ($_GET['module'] == "download" and !empty($_GET['fid'])) {
  download($_GET['fid']);
}

if (isset($_SESSION['userid'])) {
  if (file_exists(_PATH_."/download/".$_SESSION['userid'])
  and $_GET['module'] != "download") {
    remove_dir(_PATH_."/download/".$_SESSION['userid']);
  }
}

if (empty($_GET['issueid'])) {
  if (!empty($_GET['tid'])) {
    $_GET['issueid'] = $_GET['tid'];
  }
  if (!empty($_POST['issueid'])) {
    $_GET['issueid'] = $_POST['issueid'];
  }
}

$smarty->display("header.tpl");

if ($_GET['debug'] == "on") {
  $_SESSION['debugger'] = "on";
} else if ($_GET['debug'] == "off") {
  unset($_SESSION['debugger']);
} 

if ($_GET['module'] == "users" and $_GET['action'] == "whois") {
  whois($_GET['userid']);
}

if ((isset($_GET['module']) and file_exists(_MODULES_.$_GET['module']."/noauth"))
or isset($_SESSION['userid'])) {
  if (!isset($_COOKIE['tz'])) {
    $_COOKIE['tz'] = _DEFTZ_;
  }

  if (file_exists(_MODULES_.$_GET['module']."/noauth")) {
    $_GET['nonav'] = TRUE;
  }

  if (empty($_GET['nonav'])) {
    $leftnav_menu["Main"] = _URL_;

    $includes = module_includes("menus");
    foreach ($includes as $inc) {
      include($inc);
    }

    $leftnav_menu["Logout"] = "?logout=true";
    $pmenus = user_menu($_SESSION['userid']);

    $smarty->assign('leftnav_menu',$leftnav_menu);
    $smarty->assign('pmenus',$pmenus);
    $smarty->assign('rightnav_menu',$rightnav_menu);
    $smarty->display("leftnav.tpl");

    $includes = module_includes("leftnav");
    foreach ($includes as $inc) {
      include($inc);
    }
  }

  if ($_GET['module'] != "help" and !empty($_GET['module'])) {
    if (empty($_GET['action'])) {
      if (file_exists(_HELP_.$_GET['module'].".hlp")) {
        $smarty->assign('help_file',_HELP_.$_GET['module'].".hlp");
      }
    } else {
      if (file_exists(_HELP_.$_GET['module']."/".$_GET['action'].".hlp")) {
        $smarty->assign('help_file',_HELP_.$_GET['module']."/".$_GET['action'].".hlp");
      }
    }
  }

  if ($_GET['module'] != "help") {
    $smarty->display("iconbar.tpl");
  }

  if (empty($_GET['module'])) {
    if ($_SESSION['group_count'] > 0) {
      $includes = module_includes("miniview");
      foreach ($includes as $inc) {
        include($inc);
      }
    } else {
      push_error("Your user does not belong to any groups within this system.  Please contact "._ADMINEMAIL_." to correct this.");
      $smarty->display("errors.tpl");
    }
  } else {
    if ($_GET['module'] == "help") {
      if (empty($_GET['act'])) {
        $file = _HELP_.$_GET['mod'].".hlp";
      } else {
        $file = _HELP_.$_GET['mod']."/".$_GET['act'].".hlp";
      }
      
      if ($fp = fopen($file,"r")) {
        $buffer = fread($fp,filesize($file));
        fclose($fp);
      } else {
        $buffer = "Could not find a help file for requested module/action.";
      }
      $smarty->assign('help',$buffer);
      $smarty->display("help.tpl");
    } else {
      if (empty($_GET['action'])) {
        if (file_exists(_MODULES_.$_GET['module']."/".$_GET['module'].".php")) {
          include_once(_MODULES_.$_GET['module']."/".$_GET['module'].".php");
        }
      } else {
        if (file_exists(_MODULES_.$_GET['module']."/".$_GET['action'].".".$_GET['module'].".php")) {
          include_once(_MODULES_.$_GET['module']."/".$_GET['action'].".".$_GET['module'].".php");
        }
      }
    }
  }

  if (empty($_GET['nonav'])) {
    $smarty->display("rightnav.tpl");
  }
} else {
  if ($fp = fopen(_INCLUDES_."motd","r")) {
    $motd = fread($fp,filesize(_INCLUDES_."motd"));
    $smarty->assign('motd',$motd);
    fclose($fp);
  }
  $smarty->assign('allow_register',$allow_register);
  $smarty->display("login.tpl");
}

$smarty->display("footer.tpl");

if ($_SESSION['debugger'] == "on") {
  debug($_SESSION,"Session Variables");
  debug($_COOKIE,"Cookie Variables");
  debug($_POST,"Post Variables");
  debug($_GET,"GET Variables");
  debug($_ENV,"Environment Variables");

  print "<script type=\"text/javascript\" language=\"javascript\">\n";
  print "debugwin.document.writeln('</table>');\n";
  print "debugwin.document.writeln('</body>');\n";
  print "debugwin.document.writeln('</html>');\n";
  print "</script>\n";
}

ob_end_flush();
?>