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We now work with a hash to avoid cookie manipulation

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This commit is contained in:
Michael Vogel 2016-04-25 11:19:42 +02:00
parent a214fc798a
commit 8c2a4fe02a
1 changed files with 22 additions and 3 deletions
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25
include/auth.php
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@ -18,8 +18,14 @@ if(isset($_COOKIE["Friendica"])) {
);
if ($r) {
if ($data->hash != cookie_hash($r[0])) {
logger("Hash for user ".$data->uid." doesn't fit.");
nuke_session();
goaway(z_root());
}
// Renew the cookie
new_cookie(604800, json_encode(array("uid" => $r[0]["uid"], "ip" => $_SERVER['REMOTE_ADDR'])));
new_cookie(604800, $r[0]);
// Do the authentification if not done by now
if(!isset($_SESSION) OR !isset($_SESSION['authenticated'])) {
@ -184,7 +190,7 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
// The cookie will be renewed automatically.
// The week ensures that sessions will expire after some inactivity.
if($_POST['remember'])
new_cookie(604800, json_encode(array("uid" => $r[0]["uid"], "ip" => $_SERVER['REMOTE_ADDR'])));
new_cookie(604800, $r[0]);
else
new_cookie(0); // 0 means delete on browser exit
@ -195,11 +201,24 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
}
}
function new_cookie($time, $value = "") {
function cookie_hash($user) {
return(hash("sha256", get_config("system", "site_prvkey").
$user["uprvkey"].
$user["password"]));
}
function new_cookie($time, $user = array()) {
if ($time != 0)
$time = $time + time();
if ($user)
$value = json_encode(array("uid" => $user["uid"],
"hash" => cookie_hash($user),
"ip" => $_SERVER['REMOTE_ADDR']));
else
$value = "";
setcookie("Friendica", $value, $time, "/", "",
(get_config('system', 'ssl_policy') == SSL_POLICY_FULL), true);