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nfqws: do not do useless work

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bol-van 2022-01-01 21:12:47 +03:00
parent 1031eef3a4
commit 44175a5e2d
1 changed files with 5 additions and 5 deletions
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10
nfq/desync.c
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@ -570,11 +570,6 @@ packet_process_result dpi_desync_udp_packet(uint8_t *data_pkt, size_t len_pkt, s
if (params.desync_mode==DESYNC_NONE) return res;
ttl_orig = ip ? ip->ip_ttl : ip6hdr->ip6_ctlun.ip6_un1.ip6_un1_hlim;
if (ip6hdr) ttl_fake = params.desync_ttl6 ? params.desync_ttl6 : ttl_orig;
else ttl_fake = params.desync_ttl ? params.desync_ttl : ttl_orig;
extract_endpoints(ip, ip6hdr, NULL, udphdr, &src, &dst);
if (len_payload)
{
const uint8_t *fake;
@ -584,6 +579,11 @@ packet_process_result dpi_desync_udp_packet(uint8_t *data_pkt, size_t len_pkt, s
if (!params.desync_any_proto) return res;
DLOG("applying tampering to unknown protocol\n")
ttl_orig = ip ? ip->ip_ttl : ip6hdr->ip6_ctlun.ip6_un1.ip6_un1_hlim;
if (ip6hdr) ttl_fake = params.desync_ttl6 ? params.desync_ttl6 : ttl_orig;
else ttl_fake = params.desync_ttl ? params.desync_ttl : ttl_orig;
extract_endpoints(ip, ip6hdr, NULL, udphdr, &src, &dst);
fake = params.fake_unknown_udp;
fake_size = params.fake_unknown_udp_size;