Viewing file:  sanitizing.lib.php (3.43 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* This is in a separate script because it's called from a number of scripts
*
* @package phpMyAdmin
*/
/**
* Sanitizes $message, taking into account our special codes
* for formatting.
*
* If you want to include result in element attribute, you should escape it.
*
* Examples:
*
* <p><?php echo PMA_sanitize($foo); ?></p>
*
* <a title="<?php echo PMA_sanitize($foo, true); ?>">bar</a>
*
* @uses preg_replace()
* @uses strtr()
* @param string the message
* @param boolean whether to escape html in result
*
* @return string the sanitized message
*
* @access public
*/
function PMA_sanitize($message, $escape = false, $safe = false)
{
if (!$safe) {
$message = strtr($message, array('<' => '<', '>' => '>'));
}
$replace_pairs = array(
'[i]' => '<em>', // deprecated by em
'[/i]' => '</em>', // deprecated by em
'[em]' => '<em>',
'[/em]' => '</em>',
'[b]' => '<strong>', // deprecated by strong
'[/b]' => '</strong>', // deprecated by strong
'[strong]' => '<strong>',
'[/strong]' => '</strong>',
'[tt]' => '<code>', // deprecated by CODE or KBD
'[/tt]' => '</code>', // deprecated by CODE or KBD
'[code]' => '<code>',
'[/code]' => '</code>',
'[kbd]' => '<kbd>',
'[/kbd]' => '</kbd>',
'[br]' => '<br />',
'[/a]' => '</a>',
'[sup]' => '<sup>',
'[/sup]' => '</sup>',
);
$message = strtr($message, $replace_pairs);
$pattern = '/\[a@([^"@]*)@([^]"]*)\]/';
if (preg_match_all($pattern, $message, $founds, PREG_SET_ORDER)) {
$valid_links = array(
'http', // default http:// links (and https://)
'./Do', // ./Documentation
'./ur', // url.php redirector
);
foreach ($founds as $found) {
// only http... and ./Do... allowed
if (! in_array(substr($found[1], 0, 4), $valid_links)) {
return $message;
}
// a-z and _ allowed in target
if (! empty($found[2]) && preg_match('/[^a-z_]+/i', $found[2])) {
return $message;
}
}
if (substr($found[1], 0, 4) == 'http') {
$message = preg_replace($pattern, '<a href="' . PMA_linkURL($found[1]) . '" target="\2">', $message);
} else {
$message = preg_replace($pattern, '<a href="\1" target="\2">', $message);
}
}
if ($escape) {
$message = htmlspecialchars($message);
}
return $message;
}
/**
* Sanitize a filename by removing anything besides legit characters
*
* Intended usecase:
* When using a filename in a Content-Disposition header the value
* should not contain ; or "
*
* When exporting, avoiding generation of an unexpected double-extension file
*
* @param string The filename
* @param boolean Whether to also replace dots
*
* @return string the sanitized filename
*
*/
function PMA_sanitize_filename($filename, $replaceDots = false) {
$pattern = '/[^A-Za-z0-9_';
// if we don't have to replace dots
if (! $replaceDots) {
// then add the dot to the list of legit characters
$pattern .= '.';
}
$pattern .= '-]/';
$filename = preg_replace($pattern, '_', $filename);
return $filename;
}
?>
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