/public_html/ 
../mycms 
...../index.php 
...../module
......../cmslogin.php 
...../FUDforum/ 
......../theme 
.........../default 
............../login.php

/* filename = fudlogin.xd */

<form action="&xar-modurl-roles-user-login;" method="post" enctype="application/x-www-form-urlencoded" onsubmit="forum_login.php">
<div>
    <div style="text-align: left; margin: 3px;"><label for="uname#$blockid#"><xar:mlstring>Username</xar:mlstring>:</label></div>
    <div style="text-align: right; margin: 3px;"><input type="text" name="uname" id="uname#$blockid#" maxlength="64" size="10" /></div>
</div>
<div>
    <div style="text-align: left; margin: 3px;"><label for="pass#$blockid#"><xar:mlstring>Password</xar:mlstring>:</label></div>
    <div style="text-align: right; margin: 3px;"><input type="password" name="pass" id="pass#$blockid#" maxlength="64" size="10" /></div>
</div>

<xar:if condition="xarConfigGetVar('Site.Session.SecurityLevel') ne 'High'">
    <div style="text-align: center; margin: 3px;"><input type="checkbox" name="rememberme" id="rememberme#$blockid#" value="1" />
    <label for="rememberme#$blockid#"><xar:mlstring>Remember me</xar:mlstring></label></div>
</xar:if>

<input type="hidden" name="redirecturl" id="returnurl#$blockid#" value="#$return_url#" />
<div style="text-align: center; margin: 3px;"><input type="submit" value="#$signinlabel#" /></div>

<xar:if condition="$showregister eq 1">
    <div style="text-align: center; margin: 3px;"><xar:mlstring>Need an account?</xar:mlstring><br />
    <a href="#$registerurl#"><xar:mlstring>Register here</xar:mlstring></a>.</div>
</xar:if>
</form>

<?php
/* filename = authenticate_user.php */

function authfud__get_fud_userdata($connect,$username,$pass)
{
    $prefix = xarModGetVar('authfud','prefix');
    $password = md5($pass);
    $table = $prefix.'users';

    if($connect)  //just double-checking the connection.
    {
        // connect to the FUDforum database and get the user data
        //$inv_db = mysql_select_db($database, $connect);
        $query = "SELECT * FROM " . $table . " WHERE login=? AND passwd=?";
        
        $connect->SetFetchMode(ADODB_FETCH_ASSOC);
        
        $bindvars = array($username, $password);
        $result =& $connect->Execute($query,$bindvars);
    
        if (!$result) {
            //error
            $msg = "FUDforum: Query to $table has failed: " . $connect->ErrorMsg();
            xarErrorSet(XAR_SYSTEM_EXCEPTION, 'SQL_ERROR',
                new SystemException(__FILE__.'('.__LINE__.'): '.$msg));
            error_log("FUDforum Error: Query to $table failed");
            return false;
        } 
        if ($result->EOF)
        {
            //incorrect login
        $msg = xarML('Wrong username (#(1)) or pass (not shown).', $username);
            xarErrorSet(XAR_SYSTEM_EXCEPTION, 'BAD_PARAM',
                new SystemException(__FILE__.'('.__LINE__.'): '.$msg));
            $result->Close();
            return false;
        }
        else {
            //correct login.  return uid.
                if ($result->fields['users_opt']=='0')
                {
                    //user inactive
                    $msg = xarML('User #(1) not activated.', $username);
                    xarErrorSet(XAR_SYSTEM_EXCEPTION, 'BAD_PARAM',
                        new SystemException(__FILE__.'('.__LINE__.'): '.$msg));
                    $result->Close();
                    return false;    
                }
                else
                {
                    $user_data=$result->fields;
                    $result->Close();
                    return $user_data;
                }
        }
        INCLUDE('forum_login.php');  <<<<<<<========
    }
}

?>