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<?php
/* $Id: grab_globals.lib.php,v 2.11 2005/03/03 20:59:24 rabus Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
* This library grabs the names and values of the variables sent or posted to a
* script in the $_* arrays and sets simple globals variables from them. It does
* the same work for the $PHP_SELF, $HTTP_ACCEPT_LANGUAGE and
* $HTTP_AUTHORIZATION variables.
*
* loic1 - 2001/25/11: use the new globals arrays defined with php 4.1+
*/
function PMA_gpc_extract($array, &$target, $sanitize = TRUE) {
if (!is_array($array)) {
return FALSE;
}
$is_magic_quotes = get_magic_quotes_gpc();
foreach ($array AS $key => $value) {
/**
* 2005-02-22, rabus:
*
* This is just an ugly hotfix to avoid changing internal config
* parameters.
*
* Currently, the following variable names are rejected when found in
* $_GET or $_POST: cfg, GLOBALS, str* and _*
*/
if ($sanitize && is_string($key) && (
$key == 'cfg'
|| $key == 'GLOBALS'
|| substr($key, 0, 3) == 'str'
|| $key{0} == '_')) {
continue;
}
if (is_array($value)) {
// there could be a variable coming from a cookie of
// another application, with the same name as this array
unset($target[$key]);
PMA_gpc_extract($value, $target[$key], FALSE);
} else if ($is_magic_quotes) {
$target[$key] = stripslashes($value);
} else {
$target[$key] = $value;
}
}
return TRUE;
}
if (!empty($_GET)) {
PMA_gpc_extract($_GET, $GLOBALS);
} // end if
if (!empty($_POST)) {
PMA_gpc_extract($_POST, $GLOBALS);
} // end if
if (!empty($_FILES)) {
foreach ($_FILES AS $name => $value) {
$$name = $value['tmp_name'];
${$name . '_name'} = $value['name'];
}
} // end if
if (!empty($_SERVER)) {
$server_vars = array('PHP_SELF', 'HTTP_ACCEPT_LANGUAGE', 'HTTP_AUTHORIZATION');
foreach ($server_vars as $current) {
if (isset($_SERVER[$current])) {
$$current = $_SERVER[$current];
} elseif (!isset($$current)) {
$$current = '';
}
}
unset($server_vars, $current);
} // end if
// Security fix: disallow accessing serious server files via "?goto="
if (isset($goto) && strpos(' ' . $goto, '/') > 0 && substr($goto, 0, 2) != './') {
unset($goto);
} // end if
?>
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