Class.fileProvider.php

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<?php
/*
 * @author Anakeen
 * @package FDL
*/
/**
 * ldap authentication provider
 *
 * @author Anakeen
 * @version $Id:  $
 * @package FDL
 */
/**
 */

include_once ("WHAT/Class.Provider.php");
class fileProvider extends Provider
{
    private function readPwdFile($pwdfile)
    {
        $fh = fopen($pwdfile, 'r');
        if ($fh == FALSE) {
            error_log(__CLASS__ . "::" . __FUNCTION__ . " " . "Error: opening file " . $pwdfile);
            $this->errno = 0;
            return FALSE;
        }
        $passwd = array();
        while ($line = fgets($fh)) {
            $el = explode(':', $line);
            if (count($el) != 2) {
                continue;
            }
            $passwd{$el[0]} = trim($el[1]);
        }
        fclose($fh);
        $this->errno = 0;
        return $passwd;
    }
    
    public function validateCredential($username, $password)
    {
        
        static $pwdFile = false;
        
        if (!array_key_exists('authfile', $this->parms)) {
            error_log(__CLASS__ . "::" . __FUNCTION__ . " " . "Error: authfile parm is not defined at __construct");
            $this->errno = 0;
            return FALSE;
        }
        
        if ($pwdFile === false) $pwdFile = $this->readPwdFile($this->parms{'authfile'});
        if ($pwdFile === false) {
            error_log(__CLASS__ . "::" . __FUNCTION__ . " " . "Error: reading authfile " . $this->parms{'authfile'});
            $this->errno = 0;
            return false;
        }
        
        if (!array_key_exists($username, $pwdFile)) {
            $this->errno = 0;
            return FALSE;
        }
        $ret = preg_match("/^(..)/", $pwdFile[$username], $salt);
        if ($ret == 0) {
            $this->errno = 0;
            return FALSE;
        }
        
        if ($pwdFile[$username] == crypt($password, $salt[0])) {
            $this->errno = 0;
            return true;
        }
        
        $this->errno = 0;
        return false;
    }
}