<?php
defined('IN_IA') or exit('Access Denied');
function safe_gpc_int($value, $default = 0) {
if (strpos($value, '.') !== false) {
$value = floatval($value);
$default = floatval($default);
} else {
$value = intval($value);
$default = intval($default);
}
if (empty($value) && $default != $value) {
$value = $default;
}
return $value;
}
function safe_gpc_belong($value, $allow = array(), $default = '') {
if (empty($allow)) {
return $default;
}
if (in_array($value, $allow, true)) {
return $value;
} else {
return $default;
}
}
function safe_gpc_string($value, $default = '') {
$value = safe_bad_str_replace($value);
$value = preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4}));)/', '&\\1', $value);
if (empty($value) && $default != $value) {
$value = $default;
}
return $value;
}
function safe_gpc_path($value, $default = '') {
$path = safe_gpc_string($value);
$path = str_replace(array('..', '..\\', '\\\\' ,'\\', '..\\\\'), '', $path);
if (empty($path) || $path != $value) {
$path = $default;
}
return $path;
}
function safe_gpc_array($value, $default = array()) {
if (empty($value) || !is_array($value)) {
return $default;
}
foreach ($value as &$row) {
if (is_numeric($row)) {
$row = safe_gpc_int($row);
} elseif (is_array($row)) {
$row = safe_gpc_array($row, $default);
} else {
$row = safe_gpc_string($row);
}
}
return $value;
}
function safe_gpc_boolean($value) {
return boolval($value);
}
function safe_gpc_html($value, $default = '') {
if (empty($value) || !is_string($value)) {
return $default;
}
$value = safe_bad_str_replace($value);
$value = safe_remove_xss($value);
if (empty($value) && $value != $default) {
$value = $default;
}
return $value;
}
function safe_gpc_sql($value, $operator = 'ENCODE', $default = '') {
if (empty($value) || !is_string($value)) {
return $default;
}
$value = trim(strtolower($value));
$badstr = array(
'_', '%', "'", chr(39),
'select', 'join', 'union',
'where', 'insert', 'delete',
'update', 'like', 'drop',
'create', 'modify', 'rename',
'alter', 'cast',
);
$newstr = array(
'\_', '\%', "''", ''',
'select"', 'join', 'union',
'where', 'insert', 'delete',
'update', 'like', 'drop',
'create', 'modify', 'rename"',
'alter', 'cas',
);
if ($operator == 'ENCODE') {
$value = str_replace($badstr, $newstr, $value);
} else {
$value = str_replace($newstr, $badstr, $value);
}
return $value;
}
function safe_gpc_url($value, $strict_domain = true, $default = '') {
global $_W;
if (empty($value) || !is_string($value)) {
return $default;
}
$value = urldecode($value);
if (starts_with($value, './')) {
return $value;
}
if ($strict_domain) {
if (starts_with($value, $_W['siteroot'])) {
return $value;
}
return $default;
}
if (starts_with($value, 'http') || starts_with($value, return $value;
}
return $default;
}
function safe_remove_xss($val) {
$val = preg_replace('/([\x0e-\x19])/', '', $val);
$search = 'abcdefghijklmnopqrstuvwxyz';
$search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$search .= '1234567890!@#$%^&*()';
$search .= '~`";:?+/={}[]-_|\'\\';
for ($i = 0; $i < strlen($search); $i++) {
$val = preg_replace('/(&#[xX]0{0,8}'.dechex(ord($search[$i])).';?)/i', $search[$i], $val);
$val = preg_replace('/(�{0,8}'.ord($search[$i]).';?)/', $search[$i], $val);
}
preg_match_all('/href=[\'|\"](.*?)[\'|\"]|src=[\'|\"](.*?)[\'|\"]/i', $val, $matches);
$url_list = array_merge($matches[1], $matches[2]);
$encode_url_list = array();
if (!empty($url_list)) {
foreach ($url_list as $key => $url) {
$val = str_replace($url, 'we7_' . $key . '_we7placeholder', $val);
$encode_url_list[] = $url;
}
}
$ra1 = array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'script', 'embed', 'object', 'frameset', 'ilayer', 'bgsound', 'base');
$ra2 = array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload', '@import');
$ra = array_merge($ra1, $ra2);
$found = true;
while ($found == true) {
$val_before = $val;
for ($i = 0; $i < sizeof($ra); $i++) {
$pattern = '/';
for ($j = 0; $j < strlen($ra[$i]); $j++) {
if ($j > 0) {
$pattern .= '(';
$pattern .= '(&#[xX]0{0,8}([9ab]);)';
$pattern .= '|';
$pattern .= '|(�{0,8}([9|10|13]);)';
$pattern .= ')*';
}
$pattern .= $ra[$i][$j];
}
$pattern .= '/i';
$replacement = substr($ra[$i], 0, 2).'<x>'.substr($ra[$i], 2);
$val = preg_replace($pattern, $replacement, $val);
if ($val_before == $val) {
$found = false;
}
}
}
if (!empty($encode_url_list) && is_array($encode_url_list)) {
foreach ($encode_url_list as $key => $url) {
$val = str_replace('we7_' . $key . '_we7placeholder', $url, $val);
}
}
return $val;
}
function safe_bad_str_replace($string) {
if (empty($string)) {
return '';
}
$badstr = array("\0", "%00", "%3C", "%3E", '<?', '<%', '<?php', '{php', '{if', '{loop', '../');
$newstr = array('_', '_', '<', '>', '_', '_', '_', '_', '_', '_', '.._');
$string = str_replace($badstr, $newstr, $string);
return $string;
}
function safe_check_password($password) {
$setting = setting_load('register');
if (!$setting['register']['safe']) {
return true;
}
preg_match(PASSWORD_STRONG_REGULAR, $password, $out);
if (empty($out)) {
return error(-1, PASSWORD_STRONG_STATE);
} else {
return true;
}
}