radius_auth.php

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<?php
class RadiusAuth implements AuthInterface
{

    private $filename;
    private $server;
    private $username;
    private $password;
    private $resource;
    private $port = 1812;
    private $secret;
    private $timeout = 3;
    private $max_retries = 3;

    public function __construct($auth, $extra_args)
    {

        if (!extension_loaded("radius")) {
            throw new KumbiaException("Debe cargar la extensi�n de php llamada radius");
        }

        foreach (array('server', 'secret') as $param) {
            if (isset($extra_args[$param])) {
                $this->$param = $extra_args[$param];
            } else {
                throw new KumbiaException("Debe especificar el par�metro '$param' en los par�metros");
            }
        }

        foreach (array('username', 'password') as $param) {
            if (isset($extra_args[$param])) {
                $this->$param = $extra_args[$param];
            }
        }
    }

    public function get_identity()
    {
        if (!$this->resource) {
            new KumbiaException("La conexi�n al servidor Radius es inv�lida");
        }
        $identity = array("username" => $this->username, "realm" => $this->username);
        return $identity;
    }

    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(0));
        }

        if (!radius_create_request($radius, RADIUS_ACCESS_REQUEST)) {
            throw new KumbiaException(radius_strerror(0));
        }

        if (!radius_put_string($radius, RADIUS_USER_NAME, $this->username)) {
            throw new KumbiaException(radius_strerror(0));
        }

        if (!radius_put_string($radius, RADIUS_USER_PASSWORD, $this->password)) {
            throw new KumbiaException(radius_strerror(0));
        }

        if (!radius_put_int($radius, RADIUS_AUTHENTICATE_ONLY, 1)) {
            throw new KumbiaException(radius_strerror(0));
        }

        $this->resource = $radius;

        if (radius_send_request($radius) == RADIUS_ACCESS_ACCEPT) {
            return true;
        } else {
            return false;
        }
    }

    public function __destruct()
    {
        if ($this->resource) {
            radius_close($this->resource);
        }
    }

    public function set_params($extra_args)
    {
        foreach (array('server', 'secret', 'username', 'principal',
    'password', 'port', 'max_retries') as $param) {
            if (isset($extra_args[$param])) {
                $this->$param = $extra_args[$param];
            }
        }
    }

}