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Fix proxy-neighborsolicitation.

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This commit is contained in:
Guus Sliepen 2003-12-08 12:00:40 +00:00
parent 331cef948d
commit 354b7ab20e
1 changed files with 5 additions and 3 deletions
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8
src/route.c
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@ -17,7 +17,7 @@
along with this program; if not, write to the Free Software along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: route.c,v 1.1.2.68 2003/10/06 13:57:12 guus Exp $ $Id: route.c,v 1.1.2.69 2003/12/08 12:00:40 guus Exp $
*/ */
#include "system.h" #include "system.h"
@ -438,6 +438,7 @@ static void route_neighborsol(vpn_packet_t *packet)
checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0); checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0);
checksum = inet_checksum(&ns, ns_size, checksum); checksum = inet_checksum(&ns, ns_size, checksum);
checksum = inet_checksum(&opt, opt_size, checksum); checksum = inet_checksum(&opt, opt_size, checksum);
checksum = inet_checksum(packet->data + ether_size + ip6_size + ns_size + opt_size, ETH_ALEN, checksum);
if(checksum) { if(checksum) {
ifdebug(TRAFFIC) logger(LOG_WARNING, _("Cannot route packet: checksum error for neighbor solicitation request")); ifdebug(TRAFFIC) logger(LOG_WARNING, _("Cannot route packet: checksum error for neighbor solicitation request"));
@ -472,10 +473,10 @@ static void route_neighborsol(vpn_packet_t *packet)
memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */ memcpy(packet->data, packet->data + ETH_ALEN, ETH_ALEN); /* copy destination address */
packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */ packet->data[ETH_ALEN * 2 - 1] ^= 0xFF; /* mangle source address so it looks like it's not from us */
memcpy(&ip6.ip6_src, &ns.nd_ns_target, sizeof(ip6.ip6_src)); /* swap destination and source protocol address */
memcpy(&ip6.ip6_dst, &ip6.ip6_src, sizeof(ip6.ip6_dst)); /* ... */ memcpy(&ip6.ip6_dst, &ip6.ip6_src, sizeof(ip6.ip6_dst)); /* ... */
memcpy(&ip6.ip6_src, &ns.nd_ns_target, sizeof(ip6.ip6_src)); /* swap destination and source protocol address */
memcpy(&opt + opt_size, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */ memcpy(packet->data + ether_size + ip6_size + ns_size + opt_size, packet->data + ETH_ALEN, ETH_ALEN); /* add fake source hard addr */
ns.nd_ns_cksum = 0; ns.nd_ns_cksum = 0;
ns.nd_ns_type = ND_NEIGHBOR_ADVERT; ns.nd_ns_type = ND_NEIGHBOR_ADVERT;
@ -494,6 +495,7 @@ static void route_neighborsol(vpn_packet_t *packet)
checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0); checksum = inet_checksum(&pseudo, sizeof(pseudo), ~0);
checksum = inet_checksum(&ns, ns_size, checksum); checksum = inet_checksum(&ns, ns_size, checksum);
checksum = inet_checksum(&opt, opt_size, checksum); checksum = inet_checksum(&opt, opt_size, checksum);
checksum = inet_checksum(packet->data + ether_size + ip6_size + ns_size + opt_size, ETH_ALEN, checksum);
ns.nd_ns_hdr.icmp6_cksum = checksum; ns.nd_ns_hdr.icmp6_cksum = checksum;