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postfixadmin/lib/PFASmarty.php

90 lines
3.2 KiB
PHTML

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