PHP radius_add_server函数代码示例

 function login($username, $password)
 {
     $radius = radius_auth_open();
     if (!radius_add_server($radius, RADIUS_HOST, RADIUS_PORT, RADIUS_SECRET, RADIUS_TIMEOUT, RADIUS_MAXTRIES)) {
         die('Radius Error: ' . radius_strerror($radius));
     }
     if (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
         die('Radius Error: ' . radius_strerror($radius));
     }
     radius_put_attr($radius, RADIUS_USER_NAME, $username);
     radius_put_attr($radius, RADIUS_USER_PASSWORD, $password);
     radius_put_attr($radius, RADIUS_NAS_IDENTIFIER, RADIUS_IDENTIFIER);
     $response = radius_send_request($radius);
     if ($response == RADIUS_ACCESS_ACCEPT) {
         $_SESSION['loggedin'] = $username;
         $_SESSION['userlevel'] = RADIUS_USERLEVEL;
         //User level set in settings.php
         return true;
     } else {
         if ($response == RADIUS_ACCESS_CHALLENGE) {
             //Challenge
             return false;
         }
     }
     return false;
 }

 private function _sendPOD($session)
 {
     $nas = $session[0]['nas'];
     $username = $session[0]['login'];
     $session_id = str_replace('sid_', '', $session[0]['id']);
     $radport = 3799;
     $sharedsecret = 'brascoa';
     $res = radius_acct_open();
     radius_add_server($res, $nas, $radport, $sharedsecret, 3, 1);
     radius_create_request($res, RADIUS_DISCONNECT_REQUEST);
     // radius_put_string($res, RADIUS_NAS_IP_ADDRESS, 0);
     radius_put_string($res, RADIUS_USER_NAME, $username);
     radius_put_string($res, RADIUS_ACCT_SESSION_ID, $session_id);
     $reply = radius_send_request($res);
     switch ($reply) {
         case RADIUS_COA_ACK:
         case RADIUS_DISCONNECT_ACK:
             $result = "CoA-ACK\n";
             break;
         case RADIUS_COA_NAK:
         case RADIUS_DISCONNECT_NAK:
             $result = "CoA-NAK\n";
             break;
         default:
             return "Unsupported reply\n";
     }
     while ($resa = radius_get_attr($res)) {
         $data = $resa['data'];
         $value = radius_cvt_int($data);
         switch ($value) {
             case 401:
                 $result = "Unsupported Attribute\n";
                 break;
             case 402:
                 $result = "Missing Attribute\n";
                 break;
             case 403:
                 $result = "NAS Identification mismatch [{$nas}]\n";
                 break;
             case 404:
                 $result = "Invalid Request\n";
                 break;
             case 503:
                 $result = "Session context not found\n";
                 break;
             case 506:
                 $result = "Resources unavailable\n";
                 break;
             default:
                 $result = "Unsupported Error-Cause\n";
         }
     }
     radius_close($res);
     return $result;
 }

 public function prepareRequest($res, $login, $pass, $seed)
 {
     if (!radius_add_server($res, $this->radiusServer, $this->radiusPort, $this->radiusSecret, 3, 3)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not add server (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_create_request($res, RADIUS_ACCESS_REQUEST)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not create request (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_string($res, RADIUS_NAS_IDENTIFIER, isset($_SERVER["SERVER_NAME"]) ? $_SERVER["SERVER_NAME"] : 'localhost')) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put string for nas_identifier (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_int($res, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put int for service_type (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_int($res, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put int for framed_protocol (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_string($res, RADIUS_CALLING_STATION_ID, isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '127.0.0.1') == -1) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put string for calling_station_id (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_string($res, RADIUS_USER_NAME, $login)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put string for user name (" . radius_strerror($res) . ")");
         return false;
     }
     if ($this->radiusAuthType == 'chap') {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Using CHAP.");
         mt_srand(time());
         $chall = mt_rand();
         $chapval = pack('H*', md5(pack('Ca*', 1, $pass . $chall)));
         $pass = pack('C', 1) . $chapval;
         if (!radius_put_attr($res, RADIUS_CHAP_PASSWORD, $pass)) {
             AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put attribute for chap password (" . radius_strerror($res) . ")");
             return false;
         }
         if (!radius_put_attr($res, RADIUS_CHAP_CHALLENGE, $chall)) {
             AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put attribute for chap callenge (" . radius_strerror($res) . ")");
             return false;
         }
     } else {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Using PAP.");
         if (!radius_put_string($res, RADIUS_USER_PASSWORD, $pass)) {
             AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put string for pap password (" . radius_strerror($res) . ")");
             return false;
         }
     }
     if (!radius_put_int($res, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put int for second service type (" . radius_strerror($res) . ")");
         return false;
     }
     if (!radius_put_int($res, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
         AJXP_Logger::debug(__CLASS__, __FUNCTION__, "RADIUS: Could not put int for second framed protocol (" . radius_strerror($res) . ")");
         return false;
     }
 }

function radius_init()
{
    global $rad, $config;
    if (!is_resource($rad)) {
        $success = 0;
        $rad = radius_auth_open();
        foreach ($config['auth_radius_server'] as $server) {
            if (radius_add_server($rad, $server, $config['auth_radius_port'], $config['auth_radius_secret'], $config['auth_radius_timeout'], $config['auth_radius_retries'])) {
                $success = 1;
            }
        }
        if (!$success) {
            print_error("致命错误: 无法连接到配置RADIUS服务器.");
            session_logout();
            exit;
        }
    }
}

     # PAM code by Owen Brotherhood & Bruberg
     if (!extension_loaded('pam_auth')) {
         dl('pam_auth.so');
     }
     # dl removed in PHP5.3?
     $uok = pam_auth($user, $_POST['pass']);
     $query = GenQuery('users', 's', '*', '', '', array('usrname'), array('='), array($user));
     $res = DbQuery($query, $link);
 } elseif (strstr($guiauth, 'radius') && $user != "admin") {
     # Radius code by Till Elsner
     $radres = radius_auth_open();
     if (!$radres) {
         $raderr = "Error while preparing RADIUS authentication: " . radius_strerror($radres);
     }
     foreach ($radsrv as $rs) {
         if (!radius_add_server($radres, $rs[0], $rs[1], $rs[2], $rs[3], $rs[4])) {
             echo "<h4>RADIUS: " . radius_strerror($radres) . "</h4>";
         }
     }
     if (!radius_create_request($radres, RADIUS_ACCESS_REQUEST)) {
         $raderr = "RADIUS create: " . radius_strerror($radres);
     }
     if (!(radius_put_string($radres, RADIUS_USER_NAME, $user) && radius_put_string($radres, RADIUS_USER_PASSWORD, $_POST['pass']) && radius_put_string($radres, RADIUS_CALLING_STATION_ID, $_SERVER['REMOTE_ADDR']) && radius_put_addr($radres, RADIUS_NAS_IP_ADDRESS, $_SERVER['SERVER_ADDR']))) {
         $raderr = "RADIUS put: " . radius_strerror($radres);
     }
     $radauth = radius_send_request($radres);
     if (!$radauth) {
         $raderr = "RADIUS send: " . radius_strerror($radres);
     } else {
         switch ($radauth) {
             case RADIUS_ACCESS_ACCEPT:

 /**
  * Attempt to log in using the given username and password.
  *
  * @param string $username  The username the user wrote.
  * @param string $password  The password the user wrote.
  * @return array  Associative array with the user's attributes.
  */
 protected function login($username, $password)
 {
     assert('is_string($username)');
     assert('is_string($password)');
     $radius = radius_auth_open();
     /* Try to add all radius servers, trigger a failure if no one works. */
     $success = false;
     foreach ($this->servers as $server) {
         if (!isset($server['port'])) {
             $server['port'] = 1812;
         }
         if (!radius_add_server($radius, $server['hostname'], $server['port'], $server['secret'], $this->timeout, $this->retries)) {
             SimpleSAML\Logger::info("Could not add radius server: " . radius_strerror($radius));
             continue;
         }
         $success = true;
     }
     if (!$success) {
         throw new Exception('Error adding radius servers, no servers available');
     }
     if (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
         throw new Exception('Error creating radius request: ' . radius_strerror($radius));
     }
     if ($this->realm === null) {
         radius_put_attr($radius, RADIUS_USER_NAME, $username);
     } else {
         radius_put_attr($radius, RADIUS_USER_NAME, $username . '@' . $this->realm);
     }
     radius_put_attr($radius, RADIUS_USER_PASSWORD, $password);
     if ($this->nasIdentifier !== null) {
         radius_put_attr($radius, RADIUS_NAS_IDENTIFIER, $this->nasIdentifier);
     }
     $res = radius_send_request($radius);
     if ($res != RADIUS_ACCESS_ACCEPT) {
         switch ($res) {
             case RADIUS_ACCESS_REJECT:
                 /* Invalid username or password. */
                 throw new SimpleSAML_Error_Error('WRONGUSERPASS');
             case RADIUS_ACCESS_CHALLENGE:
                 throw new Exception('Radius authentication error: Challenge requested, but not supported.');
             default:
                 throw new Exception('Error during radius authentication: ' . radius_strerror($radius));
         }
     }
     /* If we get this far, we have a valid login. */
     $attributes = array();
     if ($this->usernameAttribute !== null) {
         $attributes[$this->usernameAttribute] = array($username);
     }
     if ($this->vendor === null) {
         /*
          * We aren't interested in any vendor-specific attributes. We are
          * therefore done now.
          */
         return $attributes;
     }
     /* get AAI attribute sets. Contributed by Stefan Winter, (c) RESTENA */
     while ($resa = radius_get_attr($radius)) {
         if (!is_array($resa)) {
             throw new Exception('Error getting radius attributes: ' . radius_strerror($radius));
         }
         /* Use the received user name */
         if ($resa['attr'] == RADIUS_USER_NAME) {
             $attributes[$this->usernameAttribute] = array($resa['data']);
             continue;
         }
         if ($resa['attr'] !== RADIUS_VENDOR_SPECIFIC) {
             continue;
         }
         $resv = radius_get_vendor_attr($resa['data']);
         if (!is_array($resv)) {
             throw new Exception('Error getting vendor specific attribute: ' . radius_strerror($radius));
         }
         $vendor = $resv['vendor'];
         $attrv = $resv['attr'];
         $datav = $resv['data'];
         if ($vendor != $this->vendor || $attrv != $this->vendorType) {
             continue;
         }
         $attrib_name = strtok($datav, '=');
         $attrib_value = strtok('=');
         /* if the attribute name is already in result set,
            add another value */
         if (array_key_exists($attrib_name, $attributes)) {
             $attributes[$attrib_name][] = $attrib_value;
         } else {
             $attributes[$attrib_name] = array($attrib_value);
         }
     }
     /* end of contribution */
     return $attributes;
 }

 /**
  * Autentica un usuario usando el adaptador
  *
  * @return boolean
  */
 public function authenticate()
 {
     $radius = radius_auth_open();
     if (!$radius) {
         throw new KumbiaException("No se pudo crear el autenticador de Radius");
     }
     if (!radius_add_server($radius, $this->server, $this->port, $this->secret, $this->timeout, $this->max_retries)) {
         throw new KumbiaException(radius_strerror($radius));
     }
     if (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
         throw new KumbiaException(radius_strerror($radius));
     }
     if (!radius_put_string($radius, RADIUS_USER_NAME, $this->username)) {
         throw new KumbiaException(radius_strerror($radius));
     }
     if (!radius_put_string($radius, RADIUS_USER_PASSWORD, $this->password)) {
         throw new KumbiaException(radius_strerror($radius));
     }
     if (!radius_put_int($radius, RADIUS_AUTHENTICATE_ONLY, 1)) {
         throw new KumbiaException(radius_strerror($radius));
     }
     $this->resource = $radius;
     if (radius_send_request($radius) == RADIUS_ACCESS_ACCEPT) {
         return true;
     } else {
         return false;
     }
 }

 /**
  * Configures the radius library.
  *
  * @access public
  * @param  string  $servername   Servername or IP-Address
  * @param  integer $port         Portnumber
  * @param  string  $sharedSecret Shared secret
  * @param  integer $timeout      Timeout for each request
  * @param  integer $maxtries     Max. retries for each request
  * @return bool  true on success, false on error
  * @see addServer()
  */
 function putServer($servername, $port = 0, $sharedsecret = 'testing123', $timeout = 3, $maxtries = 3)
 {
     if (!radius_add_server($this->res, $servername, $port, $sharedsecret, $timeout, $maxtries)) {
         return false;
     }
     return true;
 }

 /**
  *	Try to connect to a radius server
  *
  *	@return boolean TRUE for success, FALSE for failure
  */
 function connect()
 {
     if (!($this->connection = radius_auth_open())) {
         $this->makeErrorText('RADIUS open failed: ');
         return FALSE;
     }
     foreach ($this->server as $k => $s) {
         if (!radius_add_server($this->connection, $s, $this->port, $this->secret[$k], 15, 1)) {
             $this->makeErrorText('RADIUS add server failed: ');
             return FALSE;
         }
     }
     return TRUE;
 }

 /**
  * Find out if a set of login credentials are valid.
  *
  * @param string $username    The userId to check.
  * @param array $credentials  An array of login credentials.
  *                            For radius, this must contain a password
  *                            entry.
  *
  * @throws Horde_Auth_Exception
  */
 protected function _authenticate($username, $credentials)
 {
     /* Password is required. */
     if (!isset($credentials['password'])) {
         throw new Horde_Auth_Exception('Password required for RADIUS authentication.');
     }
     $res = radius_auth_open();
     radius_add_server($res, $this->_params['host'], $this->_params['port'], $this->_params['secret'], $this->_params['timeout'], $this->_params['retries']);
     radius_create_request($res, RADIUS_ACCESS_REQUEST);
     radius_put_attr($res, RADIUS_NAS_IDENTIFIER, $this->_params['nas']);
     radius_put_attr($res, RADIUS_NAS_PORT_TYPE, RADIUS_VIRTUAL);
     radius_put_attr($res, RADIUS_SERVICE_TYPE, RADIUS_FRAMED);
     radius_put_attr($res, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP);
     radius_put_attr($res, RADIUS_CALLING_STATION_ID, isset($_SERVER['REMOTE_HOST']) ? $_SERVER['REMOTE_HOST'] : '127.0.0.1');
     /* Insert username/password into request. */
     radius_put_attr($res, RADIUS_USER_NAME, $username);
     radius_put_attr($res, RADIUS_USER_PASSWORD, $credentials['password']);
     /* Send request. */
     $success = radius_send_request($res);
     switch ($success) {
         case RADIUS_ACCESS_ACCEPT:
             break;
         case RADIUS_ACCESS_REJECT:
             throw new Horde_Auth_Exception('Authentication rejected by RADIUS server.');
         default:
             throw new Horde_Auth_Exception(radius_strerror($res));
     }
 }

 /**
  * This is the main authentication function of the plugin. Given both the 
  * username and password it will make use of the options set to authenticate
  * against the configured RADIUS servers.
  */
 function checkLogin($user, $username, $password)
 {
     if (is_a($user, 'WP_User')) {
         return $user;
     }
     if (empty($username)) {
         return self::wp_error('empty_username', __('The username field is empty.'));
     }
     if (empty($password)) {
         return self::wp_error('empty_password', __('The password field is empty.'));
     }
     $opts = TwoFactorRadiusAuth::getOptions();
     // skip radius for user
     if (@array_search($username, $opts['skip_users']) !== false) {
         return;
     }
     remove_filter('authenticate', 'wp_authenticate_username_password', 20, 3);
     $userdata = get_user_by('login', $username);
     if (!$userdata) {
         return self::wp_error('invalid_username', __('Invalid username.'));
     }
     if (is_multisite()) {
         // Is user marked as spam?
         if (1 == $userdata->spam) {
             return self::wp_error('invalid_username', __('Your account has been marked as a spammer.'));
         }
         // Is a user's blog marked as spam?
         if (!is_super_admin($userdata->ID) && isset($userdata->primary_blog)) {
             $details = get_blog_details($userdata->primary_blog);
             if (is_object($details) && $details->spam == 1) {
                 return self::wp_error('blog_suspended', __('Site Suspended.'));
             }
         }
     }
     $OTP = trim($_POST['otp']);
     $radiuspass = $password;
     if (!empty($OTP)) {
         $radiuspass = $password . $opts['pwd_otp_sep'] . $OTP;
     }
     if (!function_exists('radius_auth_open')) {
         return self::wp_error('missing_php_radius', 'Missing php-radius');
     }
     if (!TwoFactorRadiusAuth::isConfigured()) {
         return self::wp_error('missing_plugin_settings', __('Missing auth server settings'));
     }
     $reply_message = '';
     try {
         $rad = radius_auth_open();
         if (!radius_add_server($rad, $opts['s1_host'], $opts['s1_port'], $opts['s1_secr'], $opts['timeout'], $opts['max_tries'])) {
             throw new Exception(radius_strerror($rad));
         }
         if (!empty($opts['s2_host']) && !empty($opts['s2_port']) && !empty($opts['s2_secr'])) {
             if (!radius_add_server($rad, $opts['s2_host'], $opts['s2_port'], $opts['s2_secr'], $opts['timeout'], $opts['max_tries'])) {
                 throw new Exception(radius_strerror($rad));
             }
         }
         if (!radius_create_request($rad, RADIUS_ACCESS_REQUEST)) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_string($rad, RADIUS_NAS_IDENTIFIER, '1')) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_int($rad, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_int($rad, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
             throw new Exception(radius_strerror($rad));
         }
         $station = isset($REMOTE_HOST) ? $REMOTE_HOST : '127.0.0.1';
         if (!radius_put_string($rad, RADIUS_CALLING_STATION_ID, $station) == -1) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_string($rad, RADIUS_USER_NAME, $username)) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_string($rad, RADIUS_USER_PASSWORD, $radiuspass)) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_int($rad, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
             throw new Exception(radius_strerror($rad));
         }
         if (!radius_put_int($rad, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
             throw new Exception(radius_strerror($rad));
         }
         $res = radius_send_request($rad);
         if (!$res) {
             throw new Exception(radius_strerror($rad));
         }
         while ($rattr = radius_get_attr($rad)) {
             if ($rattr['attr'] == 18) {
                 $reply_message = $rattr['data'];
                 break;
             }
         }
     } catch (Exception $exp) {
//.........这里部分代码省略.........

 /**
  * Attempt to log in using the given username and password.
  *
  * @param string $username  The username the user wrote.
  * @param string $password  The password the user wrote.
  * @return array  Associative array with the users attributes.
  */
 protected function login($username, $password)
 {
     assert('is_string($username)');
     assert('is_string($password)');
     $radius = radius_auth_open();
     if (!radius_add_server($radius, $this->hostname, $this->port, $this->secret, $this->timeout, $this->retries)) {
         throw new Exception('Error connecting to radius server: ' . radius_strerror($radius));
     }
     if (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
         throw new Exception('Error creating radius request: ' . radius_strerror($radius));
     }
     radius_put_attr($radius, RADIUS_USER_NAME, $username);
     radius_put_attr($radius, RADIUS_USER_PASSWORD, $password);
     if ($this->nasIdentifier != NULL) {
         radius_put_attr($radius, RADIUS_NAS_IDENTIFIER, $this->nasIdentifier);
     }
     $res = radius_send_request($radius);
     if ($res != RADIUS_ACCESS_ACCEPT) {
         switch ($res) {
             case RADIUS_ACCESS_REJECT:
                 /* Invalid username or password. */
                 throw new SimpleSAML_Error_Error('WRONGUSERPASS');
             case RADIUS_ACCESS_CHALLENGE:
                 throw new Exception('Radius authentication error: Challenge requested, but not supported.');
             default:
                 throw new Exception('Error during radius authentication: ' . radius_strerror($radius));
         }
     }
     /* If we get this far, we have a valid login. */
     $attributes = array();
     if ($this->usernameAttribute !== NULL) {
         $attributes[$this->usernameAttribute] = array($username);
     }
     if ($this->vendor === NULL) {
         /*
          * We aren't interrested in any vendor-specific attributes. We are
          * therefore done now.
          */
         return $attributes;
     }
     /* get AAI attribute sets. Contributed by Stefan Winter, (c) RESTENA */
     while ($resa = radius_get_attr($radius)) {
         if (!is_array($resa)) {
             throw new Exception('Error getting radius attributes: ' . radius_strerror($radius));
         }
         if ($resa['attr'] !== RADIUS_VENDOR_SPECIFIC) {
             continue;
         }
         $resv = radius_get_vendor_attr($resa['data']);
         if (!is_array($resv)) {
             throw new Exception('Error getting vendor specific attribute: ' . radius_strerror($radius));
         }
         $vendor = $resv['vendor'];
         $attrv = $resv['attr'];
         $datav = $resv['data'];
         /*
          * Uncomment this to debug vendor attributes.
          */
         //printf("Got Vendor Attr:%d %d Bytes %s<br/>", $attrv, strlen($datav), bin2hex($datav));
         if ($vendor != $this->vendor || $attrv != $this->vendorType) {
             continue;
         }
         $attrib_name = strtok($datav, '=');
         $attrib_value = strtok('=');
         /* if the attribute name is already in result set, add another value */
         if (array_key_exists($attrib_name, $attributes)) {
             $attributes[$attrib_name][] = $attrib_value;
         } else {
             $attributes[$attrib_name] = array($attrib_value);
         }
     }
     /* end of contribution */
     return $attributes;
 }

 /**
  * Adds a RADIUS server to try to authenticate. Up to 10 servers can be specified.
  * @param  string                      $hostname The hostname or IP address of the server.
  * @param  int                         $port     The port on which authentication is listening. Usually 1812.
  * @param  string                      $secret   The shared secret for the server host.
  * @param  integer                     $timeout  Timeout in seconds to wait for a server reply
  * @param  integer                     $maxTries Maximum number of repeated requests before giving up
  * @throws Zend_Auth_Adapter_Exception If the server cannot be added
  */
 public function addServer($hostname, $port = self::DEFAULT_PORT, $secret = null, $timeout = self::DEFAULT_TIMEOUT, $maxTries = self::DEFAULT_MAXTRIES)
 {
     if (count($this->options['servers']) == self::MAX_SERVER_COUNT) {
         throw new InvalidArgumentException('A maximum of ' . self::MAX_SERVER_COUNT . ' can be added.');
     }
     if (!radius_add_server($this->radius, $hostname, $port, $secret, $timeout, $maxTries)) {
         throw new InvalidArgumentException('Error adding RADIUS server: ' . radius_strerror($this->radius));
     }
     $this->options['servers'][] = array('hostname' => $hostname, 'port' => $port, 'secret' => $secret, 'timeout' => $timeout, 'maxTries' => $maxTries);
     return $this;
 }

 /**
  * authenticate user against radius
  * @param $username username to authenticate
  * @param $password user password
  * @return bool authentication status
  */
 public function authenticate($username, $password)
 {
     $this->lastAuthProperties = array();
     // reset auth properties
     $radius = radius_auth_open();
     $error = null;
     if (!radius_add_server($radius, $this->radiusHost, $this->authPort, $this->sharedSecret, $this->timeout, $this->maxRetries)) {
         $error = radius_strerror($radius);
     } elseif (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_string($radius, RADIUS_USER_NAME, $username)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_int($radius, RADIUS_SERVICE_TYPE, RADIUS_LOGIN)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_int($radius, RADIUS_FRAMED_PROTOCOL, RADIUS_ETHERNET)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_string($radius, RADIUS_NAS_IDENTIFIER, $this->nasIdentifier)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_int($radius, RADIUS_NAS_PORT, 0)) {
         $error = radius_strerror($radius);
     } elseif (!radius_put_int($radius, RADIUS_NAS_PORT_TYPE, RADIUS_ETHERNET)) {
         $error = radius_strerror($radius);
     } else {
         // Implement extra protocols in this section.
         switch ($this->protocol) {
             case 'PAP':
                 // do PAP authentication
                 if (!radius_put_string($radius, RADIUS_USER_PASSWORD, $password)) {
                     $error = radius_strerror($radius);
                 }
                 break;
             default:
                 syslog(LOG_ERR, 'Unsupported protocol ' . $this->protocol);
                 return false;
         }
     }
     // log errors and perform actual authentication request
     if ($error != null) {
         syslog(LOG_ERR, 'RadiusError:' . radius_strerror($error));
     } else {
         $request = radius_send_request($radius);
         if (!$radius) {
             syslog(LOG_ERR, 'RadiusError:' . radius_strerror($error));
         } else {
             switch ($request) {
                 case RADIUS_ACCESS_ACCEPT:
                     while ($resa = radius_get_attr($radius)) {
                         switch ($resa['attr']) {
                             case RADIUS_SESSION_TIMEOUT:
                                 $this->lastAuthProperties['session_timeout'] = radius_cvt_int($resa['data']);
                                 break;
                             case 85:
                                 // Acct-Interim-Interval
                                 $this->lastAuthProperties['Acct-Interim-Interval'] = radius_cvt_int($resa['data']);
                                 break;
                             default:
                                 break;
                         }
                     }
                     return true;
                     break;
                 case RADIUS_ACCESS_REJECT:
                     return false;
                     break;
                 default:
                     // unexpected result, log
                     syslog(LOG_ERR, 'Radius unexpected response:' . $request);
             }
         }
     }
     return false;
 }

 function authExternalUser($login, $password)
 {
     $res = radius_auth_open();
     if (!radius_add_server($res, $this->config['radius_server'], $this->config['radius_port'], $this->config['sharedsecret'], 3, 3)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_create_request($res, RADIUS_ACCESS_REQUEST)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_string($res, RADIUS_NAS_IDENTIFIER, isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : 'localhost')) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_int($res, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_int($res, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_string($res, RADIUS_CALLING_STATION_ID, isset($_SERVER['REMOTE_HOST']) ? $_SERVER['REMOTE_HOST'] : '127.0.0.1') == -1) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_string($res, RADIUS_USER_NAME, $login)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if ($password) {
         if (!radius_put_string($res, RADIUS_USER_PASSWORD, $password)) {
             debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
             return false;
         }
     }
     if (!radius_put_int($res, RADIUS_SERVICE_TYPE, RADIUS_FRAMED)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     if (!radius_put_int($res, RADIUS_FRAMED_PROTOCOL, RADIUS_PPP)) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     $req = radius_send_request($res);
     if (!$req) {
         debug('RadiusError:' . radius_strerror($res) . "\n", 'auth');
         return false;
     }
     $user = false;
     switch ($req) {
         case RADIUS_ACCESS_ACCEPT:
             $userData = array();
             $userData["name"] = $login;
             $userData["newpass1"] = '!';
             $userData["newpass2"] = '!';
             $user = $this->storeExternalUser($login, $userData);
             break;
         case RADIUS_ACCESS_REJECT:
             debug("RadiusError: Radius Request rejected\n", 'auth');
             break;
         default:
             debug("RadiusError: Unknown answer\n", 'auth');
     }
     return $user;
 }