From: Guus Sliepen <guus@tinc-vpn.org>
Date: Tue, 9 Nov 2004 09:51:35 +0000 (+0000)
Subject: Hopefully this really fixes late packet handling.
X-Git-Tag: import-tinc-1.1~761
X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=ca7948fc06fd0495dc8104d7f55948f702ac09e2;p=meshlink

Hopefully this really fixes late packet handling.
---

diff --git a/src/net_packet.c b/src/net_packet.c
index ac0a3db6..bb50aa2d 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -231,20 +231,20 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt)
 			
 			memset(n->late, 0, sizeof(n->late));
 		} else if (inpkt->seqno <= n->received_seqno) {
-			if(inpkt->seqno <= n->received_seqno - sizeof(n->late) * 8 || !(n->late[(inpkt->seqno / 8) % sizeof(n->late)] & (1 << inpkt->seqno % 8))) {
+			if((n->received_seqno >= sizeof(n->late) * 8 && inpkt->seqno <= n->received_seqno - sizeof(n->late) * 8) || !(n->late[(inpkt->seqno / 8) % sizeof(n->late)] & (1 << inpkt->seqno % 8))) {
 				logger(LOG_WARNING, _("Got late or replayed packet from %s (%s), seqno %d, last received %d"),
 					   n->name, n->hostname, inpkt->seqno, n->received_seqno);
 				return;
 			}
 		} else {
 			for(i = n->received_seqno + 1; i < inpkt->seqno; i++)
-				n->late[(inpkt->seqno / 8) % sizeof(n->late)] |= 1 << i % 8;
+				n->late[(i / 8) % sizeof(n->late)] |= 1 << i % 8;
 		}
 	}
 	
 	n->late[(inpkt->seqno / 8) % sizeof(n->late)] &= ~(1 << inpkt->seqno % 8);
 
-	if(n->received_seqno > inpkt->seqno)
+	if(inpkt->seqno > n->received_seqno)
 		n->received_seqno = inpkt->seqno;
 			
 	if(n->received_seqno > MAX_SEQNO)