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 extensión 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 parámetro '$param' en los parámetros");
                        }
                }

                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 conexión al servidor Radius es inválida");
                }
                $identity = array("username" => $this->username, "realm" => $this->username);
                return $identity;
        }

        public function authenticate(){

                $radius = radius_auth_open();
        if(!$open_radiuse){
                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_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];
                        }
                }
        }

}