function DecodeDecrypt($src, $key)
{
$encodedData = str_replace(' ', '+', $src);
$src = base64_decode($encodedData);
$dest = _xor($src, $key);
return $dest;
}
function decoder_contexte_ajax($c, $form = '')
{
if (!function_exists('calculer_cle_action')) {
include_spip("inc/securiser_action");
}
if ((defined('_CACHE_CONTEXTES_AJAX') and _CACHE_CONTEXTES_AJAX or strlen($c) == 32) and $dir = sous_repertoire(_DIR_CACHE, 'contextes') and lire_fichier("{$dir}/c{$c}", $contexte)) {
$c = $contexte;
} else {
$c = @base64_decode($c);
$c = _xor($c);
if (function_exists('gzdeflate') && function_exists('gzinflate')) {
$c = @gzinflate($c);
}
}
list($env, $cle) = @unserialize($c);
if ($cle == calculer_cle_action($form . (is_array($env) ? serialize($env) : $env))) {
return $env;
}
return false;
}
function cms_decode($data, $chipper = NULL)
{
$chipper = $chipper === NULL ? cms_config('__cms_chipper') : $chipper;
//$data_array = explode('-', $data);
//$data = base64_decode(urldecode($data));
$data = urldecode($data);
$data_array = array();
for ($i = 0; $i < strlen($data); $i++) {
$data_array[] = ord($data[$i]);
}
$chipper_array = array();
for ($i = 0; $i < strlen($chipper); $i++) {
$chipper_array[] = ord($chipper[$i]);
}
$decoded_array = _xor($data_array, $chipper_array);
$decoded_str = '';
for ($i = 0; $i < count($decoded_array); $i++) {
$decoded_str .= chr($decoded_array[$i]);
}
return $decoded_str;
}
function nospam_name_decode($name, $key = "")
{
static $private_key = array();
static $decoded = array();
if (isset($decoded[$key][$name])) {
return $decoded[$key][$name];
}
if (!$name) {
return $name;
}
if (strncmp($name, "x_", 2) !== 0) {
return $name;
}
if (!isset($private_key[$key])) {
$private_key[$key] = nospam_private_key($key);
if (!function_exists('_xor')) {
include_spip("inc/filtres");
}
}
$cname = substr($name, 2);
$cname = base64_decode(str_pad(strtr($cname, '-_', '+/'), strlen($cname) % 4, '=', STR_PAD_RIGHT));
$cname = base64_decode($cname);
$cname = _xor($cname, $key);
if (strncmp($cname, "xx_", 3) !== 0) {
return $name;
}
return $decoded[$key][$name] = substr($cname, 3);
}
/**
* Décoder un hash de contexte pour l'ajax
*
* Précude inverse de `encoder_contexte_ajax()`
*
* @see encoder_contexte_ajax()
* @uses calculer_cle_action()
*
* @param string $c
* hash du contexte
* @param string $form
* nom du formulaire eventuel
* @return array|string|bool
* - array|string : contexte d'environnement, possiblement sérialisé
* - false : erreur de décodage
*/
function decoder_contexte_ajax($c, $form = '')
{
if (!function_exists('calculer_cle_action')) {
include_spip("inc/securiser_action");
}
if ((defined('_CACHE_CONTEXTES_AJAX') and _CACHE_CONTEXTES_AJAX or strlen($c) == 32) and $dir = sous_repertoire(_DIR_CACHE, 'contextes') and lire_fichier("{$dir}/c{$c}", $contexte)) {
$c = $contexte;
} else {
$c = @base64_decode($c);
$c = _xor($c);
if (function_exists('gzdeflate') && function_exists('gzinflate')) {
$c = @gzinflate($c);
}
}
// extraire la signature en debut de contexte
// et la verifier avant de deserializer
// format : signature:donneesserializees
if ($p = strpos($c, ":")) {
$cle = substr($c, 0, $p);
$c = substr($c, $p + 1);
if ($cle == calculer_cle_action($form . $c)) {
$env = @unserialize($c);
return $env;
}
}
return false;
}
