/**
* Smarty plugin
*
- * @package Smarty
+ * @package Smarty
* @subpackage Security
- * @author Uwe Tews
+ * @author Uwe Tews
*/
-
+
/*
* FIXME: Smarty_Security API
* - getter and setter instead of public properties would allow cultivating an internal cache properly
* - current implementation of isTrustedResourceDir() assumes that Smarty::$template_dir and Smarty::$config_dir are immutable
* the cache is killed every time either of the variables change. That means that two distinct Smarty objects with differing
- * $template_dir or $config_dir should NOT share the same Smarty_Security instance,
- * as this would lead to (severe) performance penalty! how should this be handled?
+ * $template_dir or $config_dir should NOT share the same Smarty_Security instance,
+ * as this would lead to (severe) performance penalty! how should this be handled?
*/
/**
* This class does contain the security settings
*/
-class Smarty_Security {
-
+class Smarty_Security
+{
/**
* This determines how Smarty handles "<?php ... ?>" tags in templates.
* possible values:
public $trusted_uri = array();
/**
* This is an array of trusted static classes.
- *
* If empty access to all static classes is allowed.
* If set to 'none' none is allowed.
+ *
* @var array
*/
public $static_classes = array();
/**
* This is an array of trusted PHP functions.
- *
* If empty all functions are allowed.
* To disable all PHP functions set $php_functions = null.
+ *
* @var array
*/
public $php_functions = array(
'nl2br',
);
/**
- * This is an array of trusted PHP modifers.
- *
+ * This is an array of trusted PHP modifiers.
* If empty all modifiers are allowed.
* To disable all modifier set $modifiers = null.
+ *
* @var array
*/
public $php_modifiers = array(
);
/**
* This is an array of allowed tags.
- *
* If empty no restriction by allowed_tags.
+ *
* @var array
*/
public $allowed_tags = array();
/**
* This is an array of disabled tags.
- *
* If empty no restriction by disabled_tags.
+ *
* @var array
*/
public $disabled_tags = array();
/**
* This is an array of allowed modifier plugins.
- *
* If empty no restriction by allowed_modifiers.
+ *
* @var array
*/
public $allowed_modifiers = array();
/**
* This is an array of disabled modifier plugins.
- *
* If empty no restriction by disabled_modifiers.
+ *
* @var array
*/
public $disabled_modifiers = array();
/**
* This is an array of trusted streams.
- *
* If empty all streams are allowed.
* To disable all streams set $streams = null.
+ *
* @var array
*/
public $streams = array('file');
/**
* + flag if constants can be accessed from template
+ *
* @var boolean
*/
public $allow_constants = true;
/**
* + flag if super globals can be accessed from template
+ *
* @var boolean
*/
public $allow_super_globals = true;
/**
- * Cache for $resource_dir lookups
+ * Cache for $resource_dir lookup
+ *
* @var array
*/
protected $_resource_dir = null;
/**
- * Cache for $template_dir lookups
+ * Cache for $template_dir lookup
+ *
* @var array
*/
protected $_template_dir = null;
/**
- * Cache for $config_dir lookups
+ * Cache for $config_dir lookup
+ *
* @var array
*/
protected $_config_dir = null;
/**
- * Cache for $secure_dir lookups
+ * Cache for $secure_dir lookup
+ *
* @var array
*/
protected $_secure_dir = null;
/**
- * Cache for $php_resource_dir lookups
+ * Cache for $php_resource_dir lookup
+ *
* @var array
*/
protected $_php_resource_dir = null;
/**
- * Cache for $trusted_dir lookups
+ * Cache for $trusted_dir lookup
+ *
* @var array
*/
protected $_trusted_dir = null;
-
-
+
/**
* @param Smarty $smarty
*/
{
$this->smarty = $smarty;
}
-
+
/**
* Check if PHP function is trusted.
*
- * @param string $function_name
- * @param object $compiler compiler object
- * @return boolean true if function is trusted
+ * @param string $function_name
+ * @param object $compiler compiler object
+ *
+ * @return boolean true if function is trusted
* @throws SmartyCompilerException if php function is not trusted
*/
public function isTrustedPhpFunction($function_name, $compiler)
}
$compiler->trigger_template_error("PHP function '{$function_name}' not allowed by security setting");
+
return false; // should not, but who knows what happens to the compiler in the future?
}
/**
* Check if static class is trusted.
*
- * @param string $class_name
- * @param object $compiler compiler object
- * @return boolean true if class is trusted
+ * @param string $class_name
+ * @param object $compiler compiler object
+ *
+ * @return boolean true if class is trusted
* @throws SmartyCompilerException if static class is not trusted
*/
public function isTrustedStaticClass($class_name, $compiler)
}
$compiler->trigger_template_error("access to static class '{$class_name}' not allowed by security setting");
+
return false; // should not, but who knows what happens to the compiler in the future?
}
/**
* Check if PHP modifier is trusted.
*
- * @param string $modifier_name
- * @param object $compiler compiler object
- * @return boolean true if modifier is trusted
+ * @param string $modifier_name
+ * @param object $compiler compiler object
+ *
+ * @return boolean true if modifier is trusted
* @throws SmartyCompilerException if modifier is not trusted
*/
public function isTrustedPhpModifier($modifier_name, $compiler)
}
$compiler->trigger_template_error("modifier '{$modifier_name}' not allowed by security setting");
+
return false; // should not, but who knows what happens to the compiler in the future?
}
/**
* Check if tag is trusted.
*
- * @param string $tag_name
- * @param object $compiler compiler object
- * @return boolean true if tag is trusted
+ * @param string $tag_name
+ * @param object $compiler compiler object
+ *
+ * @return boolean true if tag is trusted
* @throws SmartyCompilerException if modifier is not trusted
*/
public function isTrustedTag($tag_name, $compiler)
{
// check for internal always required tags
if (in_array($tag_name, array('assign', 'call', 'private_filter', 'private_block_plugin', 'private_function_plugin', 'private_object_block_function',
- 'private_object_function', 'private_registered_function', 'private_registered_block', 'private_special_variable', 'private_print_expression', 'private_modifier'))) {
+ 'private_object_function', 'private_registered_function', 'private_registered_block', 'private_special_variable', 'private_print_expression', 'private_modifier'))
+ ) {
return true;
}
// check security settings
} else {
$compiler->trigger_template_error("tag '{$tag_name}' disabled by security setting", $compiler->lex->taglineno);
}
- } else if (in_array($tag_name, $this->allowed_tags) && !in_array($tag_name, $this->disabled_tags)) {
+ } elseif (in_array($tag_name, $this->allowed_tags) && !in_array($tag_name, $this->disabled_tags)) {
return true;
} else {
$compiler->trigger_template_error("tag '{$tag_name}' not allowed by security setting", $compiler->lex->taglineno);
}
+
return false; // should not, but who knows what happens to the compiler in the future?
}
/**
* Check if modifier plugin is trusted.
*
- * @param string $modifier_name
- * @param object $compiler compiler object
- * @return boolean true if tag is trusted
+ * @param string $modifier_name
+ * @param object $compiler compiler object
+ *
+ * @return boolean true if tag is trusted
* @throws SmartyCompilerException if modifier is not trusted
*/
public function isTrustedModifier($modifier_name, $compiler)
} else {
$compiler->trigger_template_error("modifier '{$modifier_name}' disabled by security setting", $compiler->lex->taglineno);
}
- } else if (in_array($modifier_name, $this->allowed_modifiers) && !in_array($modifier_name, $this->disabled_modifiers)) {
+ } elseif (in_array($modifier_name, $this->allowed_modifiers) && !in_array($modifier_name, $this->disabled_modifiers)) {
return true;
} else {
$compiler->trigger_template_error("modifier '{$modifier_name}' not allowed by security setting", $compiler->lex->taglineno);
}
+
return false; // should not, but who knows what happens to the compiler in the future?
}
/**
* Check if stream is trusted.
*
- * @param string $stream_name
- * @return boolean true if stream is trusted
+ * @param string $stream_name
+ *
+ * @return boolean true if stream is trusted
* @throws SmartyException if stream is not trusted
*/
public function isTrustedStream($stream_name)
/**
* Check if directory of file resource is trusted.
*
- * @param string $filepath
- * @return boolean true if directory is trusted
+ * @param string $filepath
+ *
+ * @return boolean true if directory is trusted
* @throws SmartyException if directory is not trusted
*/
public function isTrustedResourceDir($filepath)
// check if index is outdated
if ((!$this->_template_dir || $this->_template_dir !== $_template_dir)
- || (!$this->_config_dir || $this->_config_dir !== $_config_dir)
- || (!empty($this->secure_dir) && (!$this->_secure_dir || $this->_secure_dir !== $this->secure_dir))
+ || (!$this->_config_dir || $this->_config_dir !== $_config_dir)
+ || (!empty($this->secure_dir) && (!$this->_secure_dir || $this->_secure_dir !== $this->secure_dir))
) {
$this->_resource_dir = array();
$_template = true;
$_directory[$directory] = true;
// test if the directory is trusted
if (isset($this->_resource_dir[$directory])) {
- // merge sub directories of current $directory into _resource_dir to speed up subsequent lookups
+ // merge sub directories of current $directory into _resource_dir to speed up subsequent lookup
$this->_resource_dir = array_merge($this->_resource_dir, $_directory);
+
return true;
}
// abort if we've reached root
// give up
throw new SmartyException("directory '{$_filepath}' not allowed by security setting");
}
-
+
/**
* Check if URI (e.g. {fetch} or {html_image}) is trusted
- *
* To simplify things, isTrustedUri() resolves all input to "{$PROTOCOL}://{$HOSTNAME}".
* So "http://username:password@hello.world.example.org:8080/some-path?some=query-string"
* is reduced to "http://hello.world.example.org" prior to applying the patters from {@link $trusted_uri}.
- * @param string $uri
- * @return boolean true if URI is trusted
+ *
+ * @param string $uri
+ *
+ * @return boolean true if URI is trusted
* @throws SmartyException if URI is not trusted
* @uses $trusted_uri for list of patterns to match against $uri
*/
}
}
}
-
+
throw new SmartyException("URI '{$uri}' not allowed by security setting");
}
-
+
/**
* Check if directory of file resource is trusted.
*
- * @param string $filepath
- * @return boolean true if directory is trusted
+ * @param string $filepath
+ *
+ * @return boolean true if directory is trusted
* @throws SmartyException if PHP directory is not trusted
*/
public function isTrustedPHPDir($filepath)
$_directory[] = $directory;
// test if the directory is trusted
if (isset($this->_php_resource_dir[$directory])) {
- // merge sub directories of current $directory into _resource_dir to speed up subsequent lookups
+ // merge sub directories of current $directory into _resource_dir to speed up subsequent lookup
$this->_php_resource_dir = array_merge($this->_php_resource_dir, $_directory);
+
return true;
}
// abort if we've reached root
throw new SmartyException("directory '{$_filepath}' not allowed by security setting");
}
-
}
-
-?>
\ No newline at end of file
projects / friendica.git / blobdiff