<?php

// set this to false to disable auto-configuration and checks

function locate_htpasswd() {
    $htpasswd = '';
    
    if (is_executable('/usr/sbin/htpasswd2')) {
        $htpasswd = '/usr/sbin/htpasswd2';
    } else if (is_executable('/usr/bin/htpasswd')) {
        $htpasswd = '/usr/bin/htpasswd';
    } else {
        $output2 = array();
        $return2 = null;
        exec('which htpasswd2', $output2, $return2);
        $output = array();
        $return = null;
        exec('which htpasswd', $output, $return);
        if (!$return2)
            $htpasswd = $output2[0];
        else if (!$return)
            $htpasswd = $output[0];
    }
    
    if (strpos($htpasswd, 'htpasswd')) {
        $output = array();
        $return = null;
        exec($htpasswd . ' -nbp user pass', $output, $return);
        if ($return || $output[0] != 'user:pass')
            $htpasswd = '';
    } else {
        $htpasswd = '';
    }
    
    return $htpasswd;
}




function getHtpassword($user,$pass)
{
            $auto_configuration = true;
            $htpasswd_binary = '';

            global $alphabet_64;
            $alphabet_64 = 
                './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';


            if ($auto_configuration)
                $htpasswd_binary = locate_htpasswd();


                    if (get_magic_quotes_gpc()) {
                        $username = stripslashes($user);
                        $password = stripslashes($pass);
                        $mode = stripslashes(sha);
                    } else {
                        $username = $user;
                        $password = $pass;
                        $mode = 'sha';
                    }


            $valid = true;
            $valid = $valid && $username;
            $valid = $valid && !strpos($username, ':');
            $valid = $valid && $password;


            if ($valid) {

                
                if ($htpasswd_binary) {
                
                  
                    if (!ini_get('safe_mode')) { 
                        $username_esc = escapeshellarg($username);
                        $password_esc = escapeshellarg($password);
                    } else {
                        $username_esc = $username;
                        $password_esc = $password;
                    }
                    
                  
                    $flags = '-bn';
                    if ($mode == 'crypt')
                        $flags .= 'd';
                    else if ($mode == 'md5')
                        $flags .= 'm'; 
                    else if ($mode == 'sha')
                        $flags .= 's'; 
                    else if ($mode == 'plain')
                        $flags .= 'p';
                    
                  
                    $output = array();
                    $return = null;
                    exec("$htpasswd_binary $flags $username_esc $password_esc",
                         $output, $return);
                    if ($return) {
                        
                        $htpasswd_binary = '';
                    } else {
                     
                        $htpasswd_line = $output[0];
                    }
                }
                
              
                if (!$htpasswd_binary) {
                    if ($mode == 'crypt' && CRYPT_STD_DES == 1)
                        $htpasswd_line = $username . ':'
                                         . crypt($password, salt(2));
                    else if ($mode == 'md5')
                        $htpasswd_line = $username . ':'
                                         . crypt_apr_md5($password);
                    else if ($mode == 'sha')
                        $htpasswd_line = $username . ':'
                                         . '{SHA}' . base64_encode(sha1($password, true));
                    else if ($mode == 'plain')
                        $htpasswd_line = $username . ':'
                                         . $password;
                 }
              }


  return  $htpasswd_line  ;
}

?>