<Directory "/wordpress/">
	SSLOptions +StdEnvVars

	<Files wp-login.php>
		Satisfy any
		SSLVerifyClient require
	</Files>
</Directory>
<Directory "/wordpress/wp-admin/">
	SSLVerifyClient require

	<Files admin-ajax.php>
		Satisfy any
		SSLVerifyClient none
	</Files>
	<Files ~ "\.(gif|jpg|png|css|js|xml)$">
		Satisfy any
		SSLVerifyClient none
	</Files>
</Directory>

<?php
/*
Plugin Name: WP Auto Login
Description: HTTP認証又はクライアント認証に成功した場合、自動でWordPressへログインします。
Version: 1.1.0
Author: REIMA
Author URI: http://blog.wolfs.jp/
*/
 
class wp_autoLogin {
    private $config = array(
        'no-loginform' => false, // hide wordpress loginform
        'wordpress-user' => 'wordpress-username',
        'client-auth' => false, // certificate auth
        'client-auth-cn' => '', // certificate-common name
        'client-auth-sn' => '', // certificate-serial number
        'http-auth-user' => 'http-username',
        'http-allow-host' => ''
    );
 
    public function __construct() {
        add_action('login_form', array($this, 'autoLogin'));
    }
 
    public function autoLogin() {
        $flagSuccess = false;
        $flagRedirect = false;
 
        if (is_user_logged_in()) {
            $flagSuccess = true;
            $flagRedirect = true;
        } else if (!$_GET['loggedout'] == 'true') {
            if ($_SERVER['SERVER_PORT'] == 443 && $this->config['client-auth'] == true) {
                if ($_SERVER['SSL_CLIENT_VERIFY'] == 'SUCCESS' && $_SERVER['SSL_CLIENT_S_DN_CN'] == $this->config['client-auth-cn']) {
                    $flagSuccess = true;
 
                    if ($this->config['client-auth-sn']) {
                        if ($_SERVER['SSL_CLIENT_M_SERIAL'] != $this->config['client-auth-sn']) {
                            $flagSuccess = false;
                        }
                    }
                }
            } else {
                if ($_SERVER['REMOTE_USER'] == $this->config['http-auth-user']) {
                    $flagSuccess = true;
                }
 
                if ($this->config['http-allow-host']) {
                    if (!(preg_match('/'.$this->config['http-allow-host'].'/', gethostbyaddr($_SERVER['REMOTE_ADDR'])))) {
                        $flagSuccess = false;
                    }
                }
            }
 
            if ($flagSuccess) {
                $wpUser = get_userdatabylogin($this->config['wordpress-user']);
 
                wp_set_current_user($wpUser->ID, $this->config['wordpress-user']);
                wp_set_auth_cookie($wpUser->ID);
                do_action('wp_signon', $this->config['wordpress-user']);
 
                $flagRedirect = true;
            }
        }
 
        if ($flagSuccess) {
            if ($flagRedirect) {
                $redirect_to = $_GET['redirect_to'];
                if (!$redirect_to) {
                    $redirect_to = admin_url();
                }
                wp_safe_redirect($redirect_to);
            }
        } else {
            if ($this->config['no-loginform'] == true) {
                wp_die('認証情報が正しくない為、ログインすることはできません。', '認証エラー');
            }
        }
    }
}
 
$wp_autoLogin_ins = new wp_autoLogin();
 
?>