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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Auth
* @subpackage Zend_Auth_Adapter_Http
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: File.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Auth_Adapter_Http_Resolver_Interface
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Interface.php';
/**
* HTTP Authentication File Resolver
*
* @category Zend
* @package Zend_Auth
* @subpackage Zend_Auth_Adapter_Http
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Auth_Adapter_Http_Resolver_File implements Zend_Auth_Adapter_Http_Resolver_Interface
{
/**
* Path to credentials file
*
* @var string
*/
protected $_file;
/**
* Constructor
*
* @param string $path Complete filename where the credentials are stored
* @return void
*/
public function __construct($path = '')
{
if (!empty($path)) {
$this->setFile($path);
}
}
/**
* Set the path to the credentials file
*
* @param string $path
* @throws Zend_Auth_Adapter_Http_Resolver_Exception
* @return Zend_Auth_Adapter_Http_Resolver_File Provides a fluent interface
*/
public function setFile($path)
{
if (empty($path) || !is_readable($path)) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Path not readable: ' . $path);
}
$this->_file = $path;
return $this;
}
/**
* Returns the path to the credentials file
*
* @return string
*/
public function getFile()
{
return $this->_file;
}
/**
* Resolve credentials
*
* Only the first matching username/realm combination in the file is
* returned. If the file contains credentials for Digest authentication,
* the returned string is the password hash, or h(a1) from RFC 2617. The
* returned string is the plain-text password for Basic authentication.
*
* The expected format of the file is:
* username:realm:sharedSecret
*
* That is, each line consists of the user's username, the applicable
* authentication realm, and the password or hash, each delimited by
* colons.
*
* @param string $username Username
* @param string $realm Authentication Realm
* @throws Zend_Auth_Adapter_Http_Resolver_Exception
* @return string|false User's shared secret, if the user is found in the
* realm, false otherwise.
*/
public function resolve($username, $realm)
{
if (empty($username)) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Username is required');
} else if (!ctype_print($username) || strpos($username, ':') !== false) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Username must consist only of printable characters, '
. 'excluding the colon');
}
if (empty($realm)) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Realm is required');
} else if (!ctype_print($realm) || strpos($realm, ':') !== false) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Realm must consist only of printable characters, '
. 'excluding the colon.');
}
// Open file, read through looking for matching credentials
$fp = @fopen($this->_file, 'r');
if (!$fp) {
/**
* @see Zend_Auth_Adapter_Http_Resolver_Exception
*/
require_once 'Zend/Auth/Adapter/Http/Resolver/Exception.php';
throw new Zend_Auth_Adapter_Http_Resolver_Exception('Unable to open password file: ' . $this->_file);
}
// No real validation is done on the contents of the password file. The
// assumption is that we trust the administrators to keep it secure.
while (($line = fgetcsv($fp, 512, ':')) !== false) {
if ($line[0] == $username && $line[1] == $realm) {
$password = $line[2];
fclose($fp);
return $password;
}
}
fclose($fp);
return false;
}
}
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