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diff --git a/gosa-core/include/smarty/sysplugins/smarty_security.php b/gosa-core/include/smarty/sysplugins/smarty_security.php
--- /dev/null
@@ -0,0 +1,427 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package Smarty
+ * @subpackage Security
+ * @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?
+ */
+
+/**
+ * This class does contain the security settings
+ */
+class Smarty_Security {
+
+ /**
+ * This determines how Smarty handles "<?php ... ?>" tags in templates.
+ * possible values:
+ * <ul>
+ * <li>Smarty::PHP_PASSTHRU -> echo PHP tags as they are</li>
+ * <li>Smarty::PHP_QUOTE -> escape tags as entities</li>
+ * <li>Smarty::PHP_REMOVE -> remove php tags</li>
+ * <li>Smarty::PHP_ALLOW -> execute php tags</li>
+ * </ul>
+ *
+ * @var integer
+ */
+ public $php_handling = Smarty::PHP_PASSTHRU;
+ /**
+ * This is the list of template directories that are considered secure.
+ * $template_dir is in this list implicitly.
+ *
+ * @var array
+ */
+ public $secure_dir = array();
+ /**
+ * This is an array of directories where trusted php scripts reside.
+ * {@link $security} is disabled during their inclusion/execution.
+ *
+ * @var array
+ */
+ public $trusted_dir = 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(
+ 'isset', 'empty',
+ 'count', 'sizeof',
+ 'in_array', 'is_array',
+ 'time',
+ 'nl2br',
+ );
+ /**
+ * This is an array of trusted PHP modifers.
+ *
+ * If empty all modifiers are allowed.
+ * To disable all modifier set $modifiers = null.
+ * @var array
+ */
+ public $php_modifiers = array(
+ 'escape',
+ 'count'
+ );
+ /**
+ * 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
+ * @var array
+ */
+ protected $_resource_dir = null;
+ /**
+ * Cache for $template_dir lookups
+ * @var array
+ */
+ protected $_template_dir = null;
+ /**
+ * Cache for $config_dir lookups
+ * @var array
+ */
+ protected $_config_dir = null;
+ /**
+ * Cache for $secure_dir lookups
+ * @var array
+ */
+ protected $_secure_dir = null;
+ /**
+ * Cache for $php_resource_dir lookups
+ * @var array
+ */
+ protected $_php_resource_dir = null;
+ /**
+ * Cache for $trusted_dir lookups
+ * @var array
+ */
+ protected $_trusted_dir = null;
+
+
+ /**
+ * @param Smarty $smarty
+ */
+ public function __construct($smarty)
+ {
+ $this->smarty = $smarty;
+ }
+
+ /**
+ * Check if PHP function is trusted.
+ *
+ * @param string $function_name
+ * @param object $compiler compiler object
+ * @return boolean true if function is trusted
+ * @throws SmartyCompilerException if php function is not trusted
+ */
+ public function isTrustedPhpFunction($function_name, $compiler)
+ {
+ if (isset($this->php_functions) && (empty($this->php_functions) || in_array($function_name, $this->php_functions))) {
+ return true;
+ }
+
+ $compiler->trigger_template_error("PHP function '{$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 $compiler compiler object
+ * @return boolean true if class is trusted
+ * @throws SmartyCompilerException if static class is not trusted
+ */
+ public function isTrustedStaticClass($class_name, $compiler)
+ {
+ if (isset($this->static_classes) && (empty($this->static_classes) || in_array($class_name, $this->static_classes))) {
+ return true;
+ }
+
+ $compiler->trigger_template_error("access to static class '{$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 $compiler compiler object
+ * @return boolean true if modifier is trusted
+ * @throws SmartyCompilerException if modifier is not trusted
+ */
+ public function isTrustedPhpModifier($modifier_name, $compiler)
+ {
+ if (isset($this->php_modifiers) && (empty($this->php_modifiers) || in_array($modifier_name, $this->php_modifiers))) {
+ return true;
+ }
+
+ $compiler->trigger_template_error("modifier '{$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 $compiler compiler object
+ * @return boolean true if tag is trusted
+ * @throws SmartyCompilerException if modifier is not trusted
+ */
+ public function isTrustedTag($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'))) {
+ return true;
+ }
+ // check security settings
+ if (empty($this->allowed_tags)) {
+ if (empty($this->disabled_tags) || !in_array($tag_name, $this->disabled_tags)) {
+ return true;
+ } 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)) {
+ 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 $compiler compiler object
+ * @return boolean true if tag is trusted
+ * @throws SmartyCompilerException if modifier is not trusted
+ */
+ public function isTrustedModifier($modifier_name, $compiler)
+ {
+ // check for internal always allowed modifier
+ if (in_array($modifier_name, array('default'))) {
+ return true;
+ }
+ // check security settings
+ if (empty($this->allowed_modifiers)) {
+ if (empty($this->disabled_modifiers) || !in_array($modifier_name, $this->disabled_modifiers)) {
+ return true;
+ } 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)) {
+ 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 $stream_name
+ * @return boolean true if stream is trusted
+ * @throws SmartyException if stream is not trusted
+ */
+ public function isTrustedStream($stream_name)
+ {
+ if (isset($this->streams) && (empty($this->streams) || in_array($stream_name, $this->streams))) {
+ return true;
+ }
+
+ throw new SmartyException("stream '{$stream_name}' not allowed by security setting");
+ }
+
+ /**
+ * Check if directory of file resource is trusted.
+ *
+ * @param string $filepath
+ * @return boolean true if directory is trusted
+ * @throws SmartyException if directory is not trusted
+ */
+ public function isTrustedResourceDir($filepath)
+ {
+ $_template = false;
+ $_config = false;
+ $_secure = false;
+
+ $_template_dir = $this->smarty->getTemplateDir();
+ $_config_dir = $this->smarty->getConfigDir();
+
+ // check if index is outdated
+ if ((!$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->_resource_dir = array();
+ $_template = true;
+ $_config = true;
+ $_secure = !empty($this->secure_dir);
+ }
+
+ // rebuild template dir index
+ if ($_template) {
+ $this->_template_dir = $_template_dir;
+ foreach ($_template_dir as $directory) {
+ $directory = realpath($directory);
+ $this->_resource_dir[$directory] = true;
+ }
+ }
+
+ // rebuild config dir index
+ if ($_config) {
+ $this->_config_dir = $_config_dir;
+ foreach ($_config_dir as $directory) {
+ $directory = realpath($directory);
+ $this->_resource_dir[$directory] = true;
+ }
+ }
+
+ // rebuild secure dir index
+ if ($_secure) {
+ $this->_secure_dir = $this->secure_dir;
+ foreach ((array) $this->secure_dir as $directory) {
+ $directory = realpath($directory);
+ $this->_resource_dir[$directory] = true;
+ }
+ }
+
+ $_filepath = realpath($filepath);
+ $directory = dirname($_filepath);
+ $_directory = array();
+ while (true) {
+ // remember the directory to add it to _resource_dir in case we're successful
+ $_directory[] = $directory;
+ // test if the directory is trusted
+ if (isset($this->_resource_dir[$directory])) {
+ // merge sub directories of current $directory into _resource_dir to speed up subsequent lookups
+ $this->_resource_dir = array_merge($this->_resource_dir, $_directory);
+ return true;
+ }
+ // abort if we've reached root
+ if (($pos = strrpos($directory, DS)) === false || !isset($directory[1])) {
+ break;
+ }
+ // bubble up one level
+ $directory = substr($directory, 0, $pos);
+ }
+
+ // give up
+ throw new SmartyException("directory '{$_filepath}' not allowed by security setting");
+ }
+
+ /**
+ * Check if directory of file resource is trusted.
+ *
+ * @param string $filepath
+ * @return boolean true if directory is trusted
+ * @throws SmartyException if PHP directory is not trusted
+ */
+ public function isTrustedPHPDir($filepath)
+ {
+ if (empty($this->trusted_dir)) {
+ throw new SmartyException("directory '{$filepath}' not allowed by security setting (no trusted_dir specified)");
+ }
+
+ // check if index is outdated
+ if (!$this->_trusted_dir || $this->_trusted_dir !== $this->trusted_dir) {
+ $this->_php_resource_dir = array();
+
+ $this->_trusted_dir = $this->trusted_dir;
+ foreach ((array) $this->trusted_dir as $directory) {
+ $directory = realpath($directory);
+ $this->_php_resource_dir[$directory] = true;
+ }
+ }
+
+ $_filepath = realpath($filepath);
+ $directory = dirname($_filepath);
+ $_directory = array();
+ while (true) {
+ // remember the directory to add it to _resource_dir in case we're successful
+ $_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
+ $this->_php_resource_dir = array_merge($this->_php_resource_dir, $_directory);
+ return true;
+ }
+ // abort if we've reached root
+ if (($pos = strrpos($directory, DS)) === false || !isset($directory[2])) {
+ break;
+ }
+ // bubble up one level
+ $directory = substr($directory, 0, $pos);
+ }
+
+ throw new SmartyException("directory '{$_filepath}' not allowed by security setting");
+ }
+
+}
+
+?>
\ No newline at end of file