From: Christian Grothoff <christian@grothoff.org>
Date: Fri, 24 Feb 2012 21:24:04 +0000 (+0000)
Subject: -fix
X-Git-Tag: initial-import-from-subversion-38251~14650
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=73abffab0522085cc12ef2a29afdf669c6f54a41;p=oweals%2Fgnunet.git

-fix
---

diff --git a/src/exit/gnunet-daemon-exit.c b/src/exit/gnunet-daemon-exit.c
index adabb70e5..3bf26d7b8 100644
--- a/src/exit/gnunet-daemon-exit.c
+++ b/src/exit/gnunet-daemon-exit.c
@@ -668,8 +668,9 @@ icmp_from_helper (const struct GNUNET_TUN_IcmpHeader *icmp,
 	/* could be TCP or UDP, but both have the ports in the right
 	   place, so that doesn't matter here */
 	udp = (const struct GNUNET_TUN_UdpHeader *) &ipv4[1];
-	source_port = ntohs (udp->source_port);
-	destination_port = ntohs (udp->destination_port);
+	/* swap ports, as they are from the original message */
+	destination_port = ntohs (udp->source_port);
+	source_port = ntohs (udp->destination_port);
 	/* throw away ICMP payload, won't be useful for the other side anyway */
 	pktlen = sizeof (struct GNUNET_TUN_IcmpHeader);
 	break;
@@ -701,8 +702,9 @@ icmp_from_helper (const struct GNUNET_TUN_IcmpHeader *icmp,
 	/* could be TCP or UDP, but both have the ports in the right
 	   place, so that doesn't matter here */
 	udp = (const struct GNUNET_TUN_UdpHeader *) &ipv6[1];
-	source_port = ntohs (udp->source_port);
-	destination_port = ntohs (udp->destination_port);
+	/* swap ports, as they are from the original message */
+	destination_port = ntohs (udp->source_port);
+	source_port = ntohs (udp->destination_port);
 	/* throw away ICMP payload, won't be useful for the other side anyway */
 	pktlen = sizeof (struct GNUNET_TUN_IcmpHeader);
 	break;