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Code Issues Releases Wiki Activity

HTTP Digest auth option for builder

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This commit is contained in:
Steve Clay 2012-03-15 14:01:39 -04:00
parent 98f372d7da
commit 45bea314d6
4 changed files with 141 additions and 3 deletions
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4
min/builder/.htaccess
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@ -0,0 +1,4 @@
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
</IfModule>

11
min/builder/index.php
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@ -25,8 +25,15 @@ if (0 === strpos($_SERVER["SERVER_SOFTWARE"], 'Apache/')
require dirname(__FILE__) . '/../config.php';
if (! $min_enableBuilder) {
header('Location: /');
exit();
header('Content-Type: text/plain');
die('This application is not enabled. See http://code.google.com/p/minify/wiki/BuilderApp');
}
if (isset($min_builderPassword)
&& is_string($min_builderPassword)
&& $min_builderPassword !== '') {
require dirname(dirname(__FILE__)) . '/lib/DooDigestAuth.php';
DooDigestAuth::http_auth('Minify Builder', array('admin' => $min_builderPassword));
}
$setIncludeSuccess = set_include_path(dirname(__FILE__) . '/../lib' . PATH_SEPARATOR . get_include_path());

8
min/config.php
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@ -9,9 +9,15 @@
/**
* Allow use of the Minify URI Builder app. Only set this to true while you need it.
**/
*/
$min_enableBuilder = true;
/**
* If non-empty, the Builder will be protected with HTTP Digest auth.
* The username is "admin".
*/
$min_builderPassword = 'admin';
/**
* Set to true to log messages to FirePHP (Firefox Firebug addon).

121
min/lib/DooDigestAuth.php Normal file
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@ -0,0 +1,121 @@
<?php
/**
* DooDigestAuth class file.
*
* @author Leng Sheng Hong <darkredz@gmail.com>
* @link http://www.doophp.com/
* @copyright Copyright &copy; 2009 Leng Sheng Hong
* @license http://www.doophp.com/license
*/
/**
* Handles HTTP digest authentication
*
* <p>HTTP digest authentication can be used with the URI router.
* HTTP digest is much more recommended over the use of HTTP Basic auth which doesn't provide any encryption.
* If you are running PHP on Apache in CGI/FastCGI mode, you would need to
* add the following line to your .htaccess for digest auth to work correctly.</p>
* <code>RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]</code>
*
* <p>This class is tested under Apache 2.2 and Cherokee web server. It should work in both mod_php and cgi mode.</p>
*
* @author Leng Sheng Hong <darkredz@gmail.com>
* @version $Id: DooDigestAuth.php 1000 2009-07-7 18:27:22
* @package doo.auth
* @since 1.0
*/
class DooDigestAuth{
/**
* Authenticate against a list of username and passwords.
*
* <p>HTTP Digest Authentication doesn't work with PHP in CGI mode,
* you have to add this into your .htaccess <code>RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]</code></p>
*
* @param string $realm Name of the authentication session
* @param array $users An assoc array of username and password: array('uname1'=>'pwd1', 'uname2'=>'pwd2')
* @param string $fail_msg Message to be displayed if the User cancel the login
* @param string $fail_url URL to be redirect if the User cancel the login
* @return string The username if login success.
*/
public static function http_auth($realm, $users, $fail_msg=NULL, $fail_url=NULL){
$realm = "Restricted area - $realm";
//user => password
//$users = array('admin' => '1234', 'guest' => 'guest');
if(!empty($_SERVER['REDIRECT_HTTP_AUTHORIZATION']) && strpos($_SERVER['REDIRECT_HTTP_AUTHORIZATION'], 'Digest')===0){
$_SERVER['PHP_AUTH_DIGEST'] = $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];
}
if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
header('WWW-Authenticate: Digest realm="'.$realm.
'",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
header('HTTP/1.1 401 Unauthorized');
if($fail_msg!=NULL)
die($fail_msg);
if($fail_url!=NULL)
die("<script>window.location.href = '$fail_url'</script>");
exit;
}
// analyze the PHP_AUTH_DIGEST variable
if (!($data = self::http_digest_parse($_SERVER['PHP_AUTH_DIGEST'])) || !isset($users[$data['username']])){
header('WWW-Authenticate: Digest realm="'.$realm.
'",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
header('HTTP/1.1 401 Unauthorized');
if($fail_msg!=NULL)
die($fail_msg);
if($fail_url!=NULL)
die("<script>window.location.href = '$fail_url'</script>");
exit;
}
// generate the valid response
$A1 = md5($data['username'] . ':' . $realm . ':' . $users[$data['username']]);
$A2 = md5($_SERVER['REQUEST_METHOD'].':'.$data['uri']);
$valid_response = md5($A1.':'.$data['nonce'].':'.$data['nc'].':'.$data['cnonce'].':'.$data['qop'].':'.$A2);
if ($data['response'] != $valid_response){
header('HTTP/1.1 401 Unauthorized');
header('WWW-Authenticate: Digest realm="'.$realm.
'",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
if($fail_msg!=NULL)
die($fail_msg);
if($fail_url!=NULL)
die("<script>window.location.href = '$fail_url'</script>");
exit;
}
// ok, valid username & password
return $data['username'];
}
/**
* Method to parse the http auth header, works with IE.
*
* Internet Explorer returns a qop="xxxxxxxxxxx" in the header instead of qop=xxxxxxxxxxx as most browsers do.
*
* @param string $txt header string to parse
* @return array An assoc array of the digest auth session
*/
private static function http_digest_parse($txt)
{
$res = preg_match("/username=\"([^\"]+)\"/i", $txt, $match);
$data['username'] = (isset($match[1]))?$match[1]:null;
$res = preg_match('/nonce=\"([^\"]+)\"/i', $txt, $match);
$data['nonce'] = $match[1];
$res = preg_match('/nc=([0-9]+)/i', $txt, $match);
$data['nc'] = $match[1];
$res = preg_match('/cnonce=\"([^\"]+)\"/i', $txt, $match);
$data['cnonce'] = $match[1];
$res = preg_match('/qop=([^,]+)/i', $txt, $match);
$data['qop'] = str_replace('"','',$match[1]);
$res = preg_match('/uri=\"([^\"]+)\"/i', $txt, $match);
$data['uri'] = $match[1];
$res = preg_match('/response=\"([^\"]+)\"/i', $txt, $match);
$data['response'] = $match[1];
return $data;
}
}