1: <?php
  2: /**
  3:  * IMSP authentication class for authentication through imtest.
  4:  *
  5:  * Required parameters:<pre>
  6:  *   'username'        Username to logon to IMSP server as.
  7:  *   'password'        Password for current user.
  8:  *   'server'          The hostname of the IMSP server.
  9:  *   'port'            The port of the IMSP server.
 10:  *   'socket'          The named socket to use for connection
 11:  *   'command'         Path to the imtest command on localhost
 12:  *   'auth_mechanism'  Authentication method to use with imtest</pre>
 13:  *
 14:  * Copyright 2005-2007      Liam Hoekenga <liamr@umich.edu>
 15:  * Copyright 2003-2012 Horde LLC (http://www.horde.org/)
 16:  *
 17:  * See the enclosed file COPYING for license information (LGPL). If you
 18:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 19:  *
 20:  * @author  Liam Hoekenga <liamr@umich.edu>
 21:  * @author  Michael J Rubinsky <mrubinsk@horde.org>
 22:  * @package Horde_Imsp
 23:  */
 24: class Horde_Imsp_Auth_Imtest extends Horde_Imsp_Auth_Base
 25: {
 26:     /**
 27:      * Private authentication function.  Provides actual
 28:      * authentication code.
 29:      *
 30:      * @return boolean
 31:      */
 32:     protected function _authenticate()
 33:     {
 34:         $command = '';
 35:         $error_return = '';
 36:         if (strtolower($this->_params['auth_mechanism']) == 'gssapi' &&
 37:             isset($_SERVER['KRB5CCNAME'])) {
 38:                 $command .= 'KRB5CCNAME=' . $_SERVER['KRB5CCNAME'];
 39:         }
 40: 
 41:         $command .= ' '    . $this->_params['command'].
 42:                     ' -m ' . $this->_params['auth_mechanism'] .
 43:                     ' -u ' . escapeshellarg($this->_params['username']) .
 44:                     ' -a ' . escapeshellarg($this->_params['username']) .
 45:                     ' -w ' . escapeshellarg($this->_params['password']).
 46:                     ' -p ' . $this->_params['port'] .
 47:                     ' -X ' . $this->_params['socket'] .
 48:                     ' '    . $this->_params['server'];
 49: 
 50:         $conn_attempts = 0;
 51:         while ($conn_attempts++ < 4) {
 52:             $attempts = 0;
 53:             if (!file_exists($this->_params['socket'])) {
 54:                 exec($command . ' > /dev/null 2>&1');
 55:                 sleep(1);
 56:                 while (!file_exists($this->_params['socket'])) {
 57:                     usleep(200000);
 58:                     if ($attempts++ > 5) {
 59:                         $error_return = ': No socket after 10 seconds of trying!';
 60:                         continue 2;
 61:                     }
 62:                 }
 63:             }
 64:             $fp = @fsockopen($this->_params['socket'], 0, $error_number, $error_string, 30);
 65:             $error_return = $error_string;
 66:             if ($fp) break;
 67:             unlink($this->_params['socket']);
 68: 
 69:         }
 70:         //Failure?
 71:         if (!empty($error_return)) {
 72:             throw new Horde_Imsp_Exception('Connection to IMSP host failed.');
 73:         }
 74:         //Success
 75:         // @TODO:
 76:         $this->_imsp->_stream = $fp;
 77: 
 78:         return true;
 79:     }
 80: 
 81:     /**
 82:      * Force a logout command to the imsp stream.
 83:      *
 84:      */
 85:     public function logout()
 86:     {
 87:         $this->_imsp->logout();
 88:     }
 89: 
 90:     /**
 91:      * Returns the driver type.
 92:      *
 93:      * @return string  The type of this IMSP_Auth driver.
 94:      */
 95:     public function getDriverType()
 96:     {
 97:         return 'imtest';
 98:     }
 99: 
100: }
101: