<?php
/*
   This code is part of GOsa (https://gosa.gonicus.de)
   Copyright (C) 2004  Fabian Hickert 

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */



class passwordMethodssha extends passwordMethod
{
  function passwordMethodssha($config)  
  {
  }

  function is_available()
  {
    if(function_exists("sha1")){
      return true;
    }elseif(function_exists("mhash")){
      return true;
    }else{
      return false;
    }
  }

  function generate_hash($pwd)
  {
    if (function_exists("sha1")) {
      $salt= substr(pack("h*", md5(mt_rand())), 0, 8);
      $salt= substr(pack("H*", sha1($salt.$pwd)), 0, 4);
      $pwd= "{ssha}".base64_encode(pack("H*", sha1($pwd.$salt)).$salt);
      return $pwd;       
    } elseif(function_exists("mhash")) {
      $salt=mhash_keygen_s2k(MHASH_SHA1,$pwd, substr(pack("h*",md5(mt_rand())),0,8),4);
      $pwd= "{ssha}".base64_encode(mhash(MHASH_SHA1, $pwd.$salt).$salt);
    } else {
      print_red(_("Can't use ssha for encryption. (Missing function mhash / sha1)"));
      return(false);
    }
    return $pwd;
  }
}

// vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
?>
