From: Guus Sliepen <guus@tinc-vpn.org>
Date: Tue, 9 Oct 2012 13:52:58 +0000 (+0200)
Subject: Clear Ethernet header when reading packets from a tun device.
X-Git-Tag: release-1.1pre3~16
X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=72642b40b3ad476101622da202b6f977a32b472f

Clear Ethernet header when reading packets from a tun device.

This fixes a warning from valgrind about uninitialized bytes, which were being
sent to other nodes.
---

diff --git a/src/bsd/device.c b/src/bsd/device.c
index c50005b2..4b33d761 100644
--- a/src/bsd/device.c
+++ b/src/bsd/device.c
@@ -238,6 +238,7 @@ static bool read_packet(vpn_packet_t *packet) {
 					return false;
 			}
 
+			memset(packet->data, 0, 12);
 			packet->len = inlen + 14;
 			break;
 
@@ -269,6 +270,7 @@ static bool read_packet(vpn_packet_t *packet) {
 					return false;
 			}
 
+			memset(packet->data, 0, 12);
 			packet->len = inlen + 10;
 			break;
 		}
diff --git a/src/linux/device.c b/src/linux/device.c
index 61785adb..37a057d8 100644
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -131,6 +131,7 @@ static bool read_packet(vpn_packet_t *packet) {
 				return false;
 			}
 
+			memset(packet->data, 0, 12);
 			packet->len = inlen + 10;
 			break;
 		case DEVICE_TYPE_TAP:
diff --git a/src/solaris/device.c b/src/solaris/device.c
index 6584b7f1..cb2ece79 100644
--- a/src/solaris/device.c
+++ b/src/solaris/device.c
@@ -151,6 +151,7 @@ static bool read_packet(vpn_packet_t *packet) {
 			return false;
 	}
 
+	memset(packet->data, 0, 12);
 	packet->len = inlen + 14;
 
 	device_total_in += packet->len;