--- /dev/null
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package Smarty
+ * @subpackage Security
+ * @author Uwe Tews
+ */
+
+/**
+ * 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 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
+ */
+ public $allow_constants = true;
+ /**
+ * + flag if super globals can be accessed from template
+ */
+ public $allow_super_globals = true;
+ /**
+ * + flag if the {php} and {include_php} tag can be executed
+ */
+ public $allow_php_tag = false;
+
+ public function __construct($smarty)
+ {
+ $this->smarty = $smarty;
+ }
+ /**
+ * Check if PHP function is trusted.
+ *
+ * @param string $function_name
+ * @param object $compiler compiler object
+ * @return boolean true if function is trusted
+ */
+ function isTrustedPhpFunction($function_name, $compiler)
+ {
+ if (isset($this->php_functions) && (empty($this->php_functions) || in_array($function_name, $this->php_functions))) {
+ return true;
+ } else {
+ $compiler->trigger_template_error ("PHP function '{$function_name}' not allowed by security setting");
+ return false;
+ }
+ }
+
+ /**
+ * Check if static class is trusted.
+ *
+ * @param string $class_name
+ * @param object $compiler compiler object
+ * @return boolean true if class is trusted
+ */
+ function isTrustedStaticClass($class_name, $compiler)
+ {
+ if (isset($this->static_classes) && (empty($this->static_classes) || in_array($class_name, $this->static_classes))) {
+ return true;
+ } else {
+ $compiler->trigger_template_error ("access to static class '{$class_name}' not allowed by security setting");
+ return false;
+ }
+ }
+ /**
+ * Check if modifier is trusted.
+ *
+ * @param string $modifier_name
+ * @param object $compiler compiler object
+ * @return boolean true if modifier is trusted
+ */
+ function isTrustedModifier($modifier_name, $compiler)
+ {
+ if (isset($this->php_modifiers) && (empty($this->php_modifiers) || in_array($modifier_name, $this->php_modifiers))) {
+ return true;
+ } else {
+ $compiler->trigger_template_error ("modifier '{$modifier_name}' not allowed by security setting");
+ return false;
+ }
+ }
+ /**
+ * Check if stream is trusted.
+ *
+ * @param string $stream_name
+ * @param object $compiler compiler object
+ * @return boolean true if stream is trusted
+ */
+ function isTrustedStream($stream_name)
+ {
+ if (isset($this->streams) && (empty($this->streams) || in_array($stream_name, $this->streams))) {
+ return true;
+ } else {
+ throw new SmartyException ("stream '{$stream_name}' not allowed by security setting");
+ return false;
+ }
+ }
+
+ /**
+ * Check if directory of file resource is trusted.
+ *
+ * @param string $filepath
+ * @param object $compiler compiler object
+ * @return boolean true if directory is trusted
+ */
+ function isTrustedResourceDir($filepath)
+ {
+ $_rp = realpath($filepath);
+ if (isset($this->smarty->template_dir)) {
+ foreach ((array)$this->smarty->template_dir as $curr_dir) {
+ if (($_cd = realpath($curr_dir)) !== false &&
+ strncmp($_rp, $_cd, strlen($_cd)) == 0 &&
+ (strlen($_rp) == strlen($_cd) || substr($_rp, strlen($_cd), 1) == DS)) {
+ return true;
+ }
+ }
+ }
+ if (!empty($this->smarty->security_policy->secure_dir)) {
+ foreach ((array)$this->smarty->security_policy->secure_dir as $curr_dir) {
+ if (($_cd = realpath($curr_dir)) !== false) {
+ if ($_cd == $_rp) {
+ return true;
+ } elseif (strncmp($_rp, $_cd, strlen($_cd)) == 0 &&
+ (strlen($_rp) == strlen($_cd) || substr($_rp, strlen($_cd), 1) == DS)) {
+ return true;
+ }
+ }
+ }
+ }
+
+ throw new SmartyException ("directory '{$_rp}' not allowed by security setting");
+ return false;
+ }
+
+ /**
+ * Check if directory of file resource is trusted.
+ *
+ * @param string $filepath
+ * @param object $compiler compiler object
+ * @return boolean true if directory is trusted
+ */
+ function isTrustedPHPDir($filepath)
+ {
+ $_rp = realpath($filepath);
+ if (!empty($this->trusted_dir)) {
+ foreach ((array)$this->trusted_dir as $curr_dir) {
+ if (($_cd = realpath($curr_dir)) !== false) {
+ if ($_cd == $_rp) {
+ return true;
+ } elseif (strncmp($_rp, $_cd, strlen($_cd)) == 0 &&
+ substr($_rp, strlen($_cd), 1) == DS) {
+ return true;
+ }
+ }
+ }
+ }
+
+ throw new SmartyException ("directory '{$_rp}' not allowed by security setting");
+ return false;
+ }
+}
+
+?>
\ No newline at end of file
projects / timetracker.git / blobdiff