drygdryg/zapret
1
0
Fork 0
mirror of https://github.com/bol-van/zapret.git synced 2024-11-30 05:50:53 +03:00
Code Issues Packages Projects Releases Wiki Activity

nfqws: use BSD udphdr

Browse Source
This commit is contained in:
bol-van 2024-08-20 17:13:02 +03:00
parent 1f2b176f16
commit 8a53c03eb6
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
nfq/desync.c
View File

@ -367,9 +367,9 @@ static uint8_t ct_new_postnat_fix(const t_ctrack *ctrack, struct ip *ip, struct
if (proto==IPPROTO_UDP && udp && len_pkt) if (proto==IPPROTO_UDP && udp && len_pkt)
{ {
// make malformed udp packet with zero length and invalid checksum // make malformed udp packet with zero length and invalid checksum
udp->len = 0; // invalid length. must be >=8 udp->uh_ulen = 0; // invalid length. must be >=8
udp_fix_checksum(udp,sizeof(struct udphdr),ip,ip6); udp_fix_checksum(udp,sizeof(struct udphdr),ip,ip6);
udp->check ^= htons(0xBEAF); udp->uh_sum ^= htons(0xBEAF);
// truncate packet // truncate packet
*len_pkt = (uint8_t*)udp - (ip ? (uint8_t*)ip : (uint8_t*)ip6) + sizeof(struct udphdr); *len_pkt = (uint8_t*)udp - (ip ? (uint8_t*)ip : (uint8_t*)ip6) + sizeof(struct udphdr);
if (ip) if (ip)