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disallow writing to super globals from within the template. also add ability to disable super global access with security enabled

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This commit is contained in:
monte.ohrt
2009-04-30 21:51:19 +00:00
parent e7e01305bd
commit 34cadb491c
2 changed files with 61 additions and 7 deletions
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44
libs/Smarty.class.php
View File

@@ -236,7 +236,8 @@ class Smarty
'INCLUDE_ANY' => false,
'PHP_TAGS' => false,
'MODIFIER_FUNCS' => array('count'),
'ALLOW_CONSTANTS' => false
'ALLOW_CONSTANTS' => false,
'ALLOW_SUPER_GLOBALS' => true
);
/**
@@ -1950,6 +1951,47 @@ class Smarty
return $function;
}
}
/**
* wrapper for super global access
* @return mixed
*/
function _get_super($type,$name)
{
// don't display anything if not allowed
if($this->security && !$this->security_settings['ALLOW_SUPER_GLOBALS']) {
$this->trigger_error('security error: super global access not allowed');
return false;
}
if(empty($type)||empty($name))
return null;
switch($type) {
case 'get':
return $this->request_use_auto_globals ? $_GET[$name] : $GLOBALS['HTTP_GET_VARS'][$name];
break;
case 'post':
return $this->request_use_auto_globals ? $_POST[$name] : $GLOBALS['HTTP_POST_VARS'][$name];
break;
case 'server':
return $this->request_use_auto_globals ? $_SERVER[$name] : $GLOBALS['HTTP_SERVER_VARS'][$name];
break;
case 'session':
return $this->request_use_auto_globals ? $_SESSION[$name] : $GLOBALS['HTTP_SESSION_VARS'][$name];
break;
case 'request':
return $this->request_use_auto_globals ? $_REQUEST[$name] : $GLOBALS['HTTP_REQUEST_VARS'][$name];
break;
case 'cookies':
return $this->request_use_auto_globals ? $_COOKIE[$name] : $GLOBALS['HTTP_COOKIE_VARS'][$name];
break;
case 'env':
return $this->request_use_auto_globals ? $_ENV[$name] : $GLOBALS['HTTP_ENV_VARS'][$name];
break;
default:
return null;
break;
}
}
/**#@-*/

24
libs/Smarty_Compiler.class.php
View File

@@ -2047,27 +2047,39 @@ class Smarty_Compiler extends Smarty {
break;
case 'get':
$compiled_ref = ($this->request_use_auto_globals) ? '$_GET' : "\$GLOBALS['HTTP_GET_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('get','$_ref_val')";
array_shift($indexes);
break;
case 'post':
$compiled_ref = ($this->request_use_auto_globals) ? '$_POST' : "\$GLOBALS['HTTP_POST_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('post','$_ref_val')";
array_shift($indexes);
break;
case 'cookies':
$compiled_ref = ($this->request_use_auto_globals) ? '$_COOKIE' : "\$GLOBALS['HTTP_COOKIE_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('cookies','$_ref_val')";
array_shift($indexes);
break;
case 'env':
$compiled_ref = ($this->request_use_auto_globals) ? '$_ENV' : "\$GLOBALS['HTTP_ENV_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('env','$_ref_val')";
array_shift($indexes);
break;
case 'server':
$compiled_ref = ($this->request_use_auto_globals) ? '$_SERVER' : "\$GLOBALS['HTTP_SERVER_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('server','$_ref_val')";
array_shift($indexes);
break;
case 'session':
$compiled_ref = ($this->request_use_auto_globals) ? '$_SESSION' : "\$GLOBALS['HTTP_SESSION_VARS']";
$_ref_val = substr($indexes[1], 1);
$compiled_ref = "\$this->_get_super('session','$_ref_val')";
array_shift($indexes);
break;
/*