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92 lines
3.2 KiB
PHP
92 lines
3.2 KiB
PHP
<?php
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/**
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* Turn on sanitisation of all data by default so it's not possible for XSS flaws to occur in PFA
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*/
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class PFASmarty {
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/**
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* @var Smarty
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*/
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protected $template;
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/**
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* @param string $template_theme
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*/
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public function __construct($template_theme = 'default') {
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$this->template = new Smarty();
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//$this->template->debugging = true;
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if($template_theme == 'default') {
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$this->template->setTemplateDir(dirname(__FILE__) . '/../templates');
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}
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else {
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$this->template->setTemplateDir(dirname(__FILE__) . '/../templates/'. $template_theme);
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}
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// if it's not present or writeable, smarty should just not cache.
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$templates_c = dirname(__FILE__) . '/../templates_c';
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if (is_dir($templates_c) && is_writeable($templates_c)) {
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$this->template->setCompileDir($templates_c);
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} else {
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# unfortunately there's no sane way to just disable compiling of templates
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clearstatcache(); // just incase someone just fixed it; on their next refresh it should work.
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error_log("ERROR: directory $templates_c doesn't exist or isn't writeable for the webserver");
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die("ERROR: the templates_c directory doesn't exist or isn't writeable for the webserver");
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}
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$this->template->setConfigDir(dirname(__FILE__) . '/../configs');
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}
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/**
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* @param string $key
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* @param mixed $value
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* @param bool $sanitise
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*/
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public function assign($key, $value, $sanitise = true) {
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$this->template->assign("RAW_$key", $value);
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if ($sanitise == false) {
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return $this->template->assign($key, $value);
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}
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$clean = $this->sanitise($value);
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/* we won't run the key through sanitise() here... some might argue we should */
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return $this->template->assign($key, $clean);
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}
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/**
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* @return void
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* @param string $template
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*/
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public function display($template) {
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header("Expires: Sun, 16 Mar 2003 05:00:00 GMT");
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header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
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header("Cache-Control: no-store, no-cache, must-revalidate");
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header("Cache-Control: post-check=0, pre-check=0", false);
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header("Pragma: no-cache");
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header("Content-Type: text/html; charset=UTF-8");
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$this->template->display($template);
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unset($_SESSION['flash']); # cleanup flash messages
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}
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/**
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* Recursive cleaning of data, using htmlentities - this assumes we only ever output to HTML and we're outputting in UTF-8 charset
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*
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* @param mixed $data - array or primitive type; objects not supported.
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* @return mixed $data
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* */
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public function sanitise($data) {
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if (!is_array($data)) {
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return htmlentities($data, ENT_QUOTES, 'UTF-8', false);
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}
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if (is_array($data)) {
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$clean = array();
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foreach ($data as $key => $value) {
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/* as this is a nested data structure it's more likely we'll output the key too (at least in my opinion, so we'll sanitise it too */
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$clean[$this->sanitise($key)] = $this->sanitise($value);
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}
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return $clean;
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}
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}
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}
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