j3d1/tinc
1
0
Fork 0
Code Issues 1 Pull requests Releases Wiki Activity

Add a variable offset to vpn_packet_t, drop sptps_packet_t.

Browse source 
The offset value indicates where the actual payload starts, so we can
process both legacy and SPTPS UDP packets without having to do casting
tricks and/or moving memory around.
This commit is contained in:
Guus Sliepen 2014-12-24 22:23:24 +01:00
parent 107d9c7da5
commit 6b92ac505d
14 changed files with 234 additions and 212 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/linux/device.c
View file

@ -1,7 +1,7 @@
/*
device.c -- Interaction with Linux ethertap and tun/tap device
Copyright (C) 2001-2005 Ivo Timmermans,
2001-2013 Guus Sliepen <guus@tinc-vpn.org>
2001-2014 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -131,7 +131,7 @@ static bool read_packet(vpn_packet_t *packet) {
switch(device_type) {
case DEVICE_TYPE_TUN:
inlen = read(device_fd, packet->data + 10, MTU - 10);
inlen = read(device_fd, DATA(packet) + 10, MTU - 10);
if(inlen <= 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s",
@ -139,11 +139,11 @@ static bool read_packet(vpn_packet_t *packet) {
return false;
}
memset(packet->data, 0, 12);
memset(DATA(packet), 0, 12);
packet->len = inlen + 10;
break;
case DEVICE_TYPE_TAP:
inlen = read(device_fd, packet->data, MTU);
inlen = read(device_fd, DATA(packet), MTU);
if(inlen <= 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s",
@ -169,15 +169,15 @@ static bool write_packet(vpn_packet_t *packet) {
switch(device_type) {
case DEVICE_TYPE_TUN:
packet->data[10] = packet->data[11] = 0;
if(write(device_fd, packet->data + 10, packet->len - 10) < 0) {
DATA(packet)[10] = DATA(packet)[11] = 0;
if(write(device_fd, DATA(packet) + 10, packet->len - 10) < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device,
strerror(errno));
return false;
}
break;
case DEVICE_TYPE_TAP:
if(write(device_fd, packet->data, packet->len) < 0) {
if(write(device_fd, DATA(packet), packet->len) < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device,
strerror(errno));
return false;