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-rw-r--r--Zotlabs/Web/Session.php59
1 files changed, 57 insertions, 2 deletions
diff --git a/Zotlabs/Web/Session.php b/Zotlabs/Web/Session.php
index d25ce5f6a..e5fe47386 100644
--- a/Zotlabs/Web/Session.php
+++ b/Zotlabs/Web/Session.php
@@ -68,8 +68,6 @@ class Session {
}
}
-
-
function new_cookie($xtime) {
$newxtime = (($xtime> 0) ? (time() + $xtime) : 0);
@@ -94,5 +92,62 @@ class Session {
}
+ function extend_cookie() {
+
+ // if there's a long-term cookie, extend it
+
+ if(intval($_SESSION['remember_me']))
+ setcookie(session_name(),session_id(),(time() + (60 * 60 * 24 * 365)));
+
+ }
+
+
+ function return_check() {
+
+ // check a returning visitor against IP changes.
+ // If the change results in being blocked from re-entry with the current cookie
+ // nuke the session and logout.
+ // Returning at all indicates the session is still valid.
+
+ // first check if we're enforcing that sessions can't change IP address
+ // @todo what to do with IPv6 addresses
+
+ if($_SESSION['addr'] && $_SESSION['addr'] != $_SERVER['REMOTE_ADDR']) {
+ logger('SECURITY: Session IP address changed: ' . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
+
+ $partial1 = substr($_SESSION['addr'], 0, strrpos($_SESSION['addr'], '.'));
+ $partial2 = substr($_SERVER['REMOTE_ADDR'], 0, strrpos($_SERVER['REMOTE_ADDR'], '.'));
+
+ $paranoia = intval(get_pconfig($_SESSION['uid'], 'system', 'paranoia'));
+
+ if(! $paranoia)
+ $paranoia = intval(get_config('system', 'paranoia'));
+
+ switch($paranoia) {
+ case 0:
+ // no IP checking
+ break;
+ case 2:
+ // check 2 octets
+ $partial1 = substr($partial1, 0, strrpos($partial1, '.'));
+ $partial2 = substr($partial2, 0, strrpos($partial2, '.'));
+ if($partial1 == $partial2)
+ break;
+ case 1:
+ // check 3 octets
+ if($partial1 == $partial2)
+ break;
+ case 3:
+ default:
+ // check any difference at all
+ logger('Session address changed. Paranoid setting in effect, blocking session. '
+ . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
+ self::nuke();
+ goaway(z_root());
+ break;
+ }
+ }
+ return true;
+ }
} \ No newline at end of file