<?php
// File name:	guest.inc.php
// Description:	PHP subroutines to bypass real operations if the user is guest
// Date:	2001-02-13
// Author:	imacat <imacat@pristine.com.tw>
// Copyright:	Copyright (C) 2001-2007 Pristine Communications

// Set the include path
if (!defined("INCPATH_SET")) {
    require_once dirname(__FILE__) . "/incpath.inc.php";
}
// Referenced subroutines
require_once "monica/actlog.inc.php";
require_once "monica/chkpriv.inc.php";
require_once "monica/login.inc.php";
require_once "monica/mkalldir.inc.php";
require_once "monica/pagefunc.inc.php";
require_once "monica/rmalldir.inc.php";
require_once "monica/rmofile.inc.php";
require_once "monica/runcmd.inc.php";
require_once "monica/sql.inc.php";
require_once "monica/xfileio.inc.php";

// Constant symbols
if (!defined("GUEST_GROUP")) {
    define("GUEST_GROUP", "guests");
}

// is_guest: If the user is a guest (by the user id)
function is_guest($user = null)
{
    // Cache the result
    static $cache = array();
    // Default to the current logged-in user
    if (is_null($user) || $user == get_login_sn()) {
        return !is_su() && in_array(GUEST_GROUP, get_login_groups());
    }
    // Return the cache
    if (array_key_exists($user, $cache)) {
        return $cache[$user];
    }
    // Super user is never a guest
    if (is_su($user)) {
        $cache[$user] = false;
        return false;
    }
    // Obtain the groups
    $groups = user_parent_groups($user);
    $cache[$user] = in_array(GUEST_GROUP, $groups);
    return $cache[$user];
}

// gunlink: unlink() if the user is not a guest
function gunlink($file)
{
    if (!is_guest()) {
        unlink($file);
    }
}

// gcopy: copy() if the user is not a guest
function gcopy($src, $dst)
{
    if (!is_guest()) {
        copy($src, $dst);
    }
}

// gactlog: actlog() if the user is not a guest
function gactlog($msg, $user = null)
{
    if (!is_guest()) {
        actlog($msg, $user);
    }
}

// gsql_query: sql_query() if the user is not a guest
function gsql_query($query)
{
    if (!is_guest()) {
        sql_query($query);
    }
}

// gmkalldir: mkalldir() if the user is not a guest
function gmkalldir($dir)
{
    if (!is_guest()) {
        mkalldir($dir);
    }
}

// grmalldir: rmalldir() if the user is not a guest
function grmalldir($dir)
{
    if (!is_guest()) {
        rmalldir($dir);
    }
}

// grmoldpage: rmoldpage() if the user is not a guest
function grmoldpage($old, $new = null)
{
    if (!is_guest()) {
        rmoldpage($old, $new);
    }
}

// grmoldfile: rmoldfile() if the user is not a guest
function grmoldfile($old, $new = null)
{
    if (!is_guest()) {
        rmoldfile($old, $new);
    }
}

// goutpage: outpage() if the user is not a guest
function goutpage($html, $path, $lang = null)
{
    if (!is_guest()) {
        outpage($html, $path, $lang);
    }
}

// gxfwrite: xfwrite() if the user is not a guest
function gxfwrite($dest, $content)
{
    if (!is_guest()) {
        xfwrite($dest, $content);
    }
}

// gxfupdate: xfupdate() if the user is not a guest
function gxfupdate($file, $newcontent)
{
    if (!is_guest()) {
        xfupdate($file, $newcontent);
    }
}

// gruncmd: runcmd() if the user is not a guest
function gruncmd($cmd, $stdin, &$stdout, &$stderr)
{
    if (!is_guest()) {
        return runcmd($cmd, $stdin, $stdout, $stderr);
    } else {
        return 0;
    }
}

// gxruncmd: xruncmd() if the user is not a guest
function gxruncmd($cmd, $stdin)
{
    if (!is_guest()) {
        return xruncmd($cmd, $stdin);
    } else {
        return "";
    }
}

?>