source: trunk/wp-content/plugins/xpressme/include/pluggable-override.php @ 142

<?php
/**
 * XPress - WordPress for XOOPS
 *
 * Adding multi-author features to XPressME
 *
 * @copyright   The XPressME project
 * @license             http://www.fsf.org/copyleft/gpl.html GNU public license
 * @author              toemon
 * @since               2.05
 * @version             $Id$
 * @package             module::xpress
 */

// ***********************************  Start Pluggable Function Edit (wp-include/pluggable.php) ************************************

if ( !function_exists('get_currentuserinfo') ) :
function get_currentuserinfo() {
        global $current_user;
        global $xoopsModule,$xoopsUser,$xoopsUserIsAdmin;


        if ($xoopsModule){
                if (!is_object($xoopsUser)){
                                wp_set_current_user(0);
                                wp_logout();
                                return false;
                }
                if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
                        return false;

                if ( ! empty($current_user) ){
                        $xoops_user = $xoopsUser->getVar("uname");
                        if ($current_user->user_login == $xoops_user)
                                return;
                }

                if (check_xpress_auth_cookie()){        //The cookie is login user's or it checks it
                        if ( $user = wp_validate_auth_cookie() ) {
                                wp_set_current_user($user);
                                return ;
                        }
                }                               
                xpress_login(); 

        } else {
                // WP2.7 original
                if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
                        return false;

                if ( ! empty($current_user) )
                        return;

                if ( ! $user = wp_validate_auth_cookie() ) {
                         if ( empty($_COOKIE[LOGGED_IN_COOKIE]) || !$user = wp_validate_auth_cookie($_COOKIE[LOGGED_IN_COOKIE], 'logged_in') ) {
                                wp_set_current_user(0);
                                return false;
                         }
                }

                wp_set_current_user($user);
        }
}
endif;

if ( !function_exists('xpress_login') ) :
function xpress_login(){
        global $current_user;
        global $xoopsModule,$xoopsUser,$xoopsUserIsAdmin;
        
        if(is_object($xoopsUser)){
                $u_name = $xoopsUser->getVar("uname");
                $u_pass_md5 = $xoopsUser->getVar("pass");       
                if ( ! empty($u_name) && ! empty($u_pass_md5) ) {
                        include_once dirname( __FILE__ ).'/user_sync_xoops.php';
                        repair_user_meta_prefix();  //Repair when data base prefix is changed on XOOPS side
                        $messege = '';
                        $ret = user_sync_to_wordpress($xoopsUser->getVar("uid"),$messege);
                        if ($ret){
                                $user = new WP_User(0, $u_name);
                                if ( wp_login($u_name, $u_pass_md5) ) {
                                        wp_setcookie($u_name, $u_pass_md5, true, '', '', false);
                                        do_action('wp_login', $u_name);
                                        wp_set_current_user($user->ID);
                                        return  true;
                                }
                        }
                }
        }
        wp_set_current_user(0);
        return 0;       
}
endif;

if ( !function_exists('check_xpress_auth_cookie') ) :
function check_xpress_auth_cookie() {           // for wp2.5
        if ( empty($_COOKIE[AUTH_COOKIE]) ){
                return false;
        }
        $cookie = $_COOKIE[AUTH_COOKIE];

        $cookie_elements = explode('|', $cookie);
        if ( count($cookie_elements) != 3 ){
                        return false;
        }
                                        
        if(is_object($GLOBALS["xoopsModule"])){
//              && WP_BLOG_DIRNAME == $GLOBALS["xoopsModule"]->getVar("dirname")){
                if(is_object($GLOBALS["xoopsUser"])){
                        $u_name = $GLOBALS["xoopsUser"]->getVar("uname");
                        list($username, $expiration, $hmac) = $cookie_elements;
                        if ($u_name == $username) {
                                return true;
                        }
                }
        } else {
                $mydirname = basename( dirname( dirname( __FILE__ ) ) ) ;
                $org_url = $_SERVER['REQUEST_URI'];
                $needle = '/modules/' . $mydirname . '/wp-admin/';
                if (strstr($org_url , $needle)){
                        return true;                            
                }
        }
        return false;
}
endif;

if ( !function_exists('wp_check_password') ) :
// for wordpress2.5
function wp_check_password($password, $hash, $user_id = '') {
        global $wp_hasher;
        global $xoops_config,$xoops_db;

        // For attestation when password has been sent as hash value. (When having logged it in from Xoops and ImpressCMS)
        if ($hash == $password){ 
                return apply_filters('check_password', true, $password, $hash, $user_id);
        }
        
        // Password authentication for Xoops 
        if ( strlen($hash) <= 32 ) {
                $check = ( $hash == md5($password) );
                return apply_filters('check_password', $check, $password, $hash, $user_id);     
        }
        
        // Password authentication for ImpressCMS 
        if($xoops_config->is_impress && function_exists('hash')){
                $mainSalt = $xoops_config->xoops_db_salt;
                // get user salt
                $xpress_user_db = $xoops_config->module_db_prefix . 'users';
                $xoops_user_db = $xoops_config->xoops_db_prefix . '_users';
                $login_name = $xoops_db->get_var("SELECT user_login FROM $xpress_user_db WHERE ID = $user_id");
                $user_salt = $xoops_db->get_var("SELECT salt FROM $xoops_user_db WHERE uname = '$login_name'");
                // Make Impress hash 
                $impress_hash = hash('sha256', $user_salt.md5($password).$mainSalt);
                if ($hash == $impress_hash){
                        return apply_filters('check_password', true, $password, $hash, $user_id);
                }
        }       

        // If the hash is still md5...
        if ( strlen($hash) <= 32 ) {
                $check = ( $hash == md5($password) );   
/* A new hash is not used because it differs from the hash on the XOOPS password. 
 *              if ( $check && $user_id ) {
 *                      // Rehash using new hash.
 *                      wp_set_password($password, $user_id);
 *                      $hash = wp_hash_password($password);
 *              }
 */
                return apply_filters('check_password', $check, $password, $hash, $user_id);
        }

        // If the stored hash is longer than an MD5, presume the
        // new style phpass portable hash.
        if ( empty($wp_hasher) ) {
                require_once( ABSPATH . 'wp-includes/class-phpass.php');
                // By default, use the portable hash from phpass
                $wp_hasher = new PasswordHash(8, TRUE);
        }

        $check = $wp_hasher->CheckPassword($password, $hash);

        return apply_filters('check_password', $check, $password, $hash, $user_id);
}
endif;

if ( !function_exists('wp_redirect') ) :
function wp_redirect($location, $status = 302) {
        global $is_IIS,$xoops_config,$action;
        
        if ($location == 'wp-login.php?loggedout=true') $location = $xoops_config->xoops_url.'/user.php?op=logout'; //xoops logout at wp logout
        if ($location == 'wp-login.php?action=register') $location = $xoops_config->xoops_url."/register.php";  //wp-register to xoops register
        if ($action == 'logout') $location = $xoops_config->xoops_url.'/user.php?op=logout'; //xoops logout at comment logout

        $location = apply_filters('wp_redirect', $location, $status);
        $status = apply_filters('wp_redirect_status', $status, $location);

        if ( !$location ) // allows the wp_redirect filter to cancel a redirect
                return false;

        $location = wp_sanitize_redirect($location);

        if ( $is_IIS ) {
                header("Refresh: 0;url=$location");
        } else {
                if ( php_sapi_name() != 'cgi-fcgi' )
                        status_header($status); // This causes problems on IIS and some FastCGI setups
                header("Location: $location");
        }
}
endif;

if ( !function_exists('wp_hash_password') ) :
function wp_hash_password($password) {
        global $wp_hasher;
        return md5($password); // A new hash is not used because it differs from the hash on the XOOPS password.
/*
        if ( empty($wp_hasher) ) {
                require_once( ABSPATH . 'wp-includes/class-phpass.php');
                // By default, use the portable hash from phpass
                $wp_hasher = new PasswordHash(8, TRUE);
        }

        return $wp_hasher->HashPassword($password);
*/
}
endif;
// ***********************************  End Of Pluggable Function Edit (wp-include/pluggable.php) ************************************

?>