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nfqws: allow to decrease udp length

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bol-van
2022-07-27 12:00:36 +03:00
parent 2d2217073a
commit 895af0f629
16 changed files with 36 additions and 14 deletions
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5
nfq/desync.c
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@@ -831,8 +831,11 @@ packet_process_result dpi_desync_udp_packet(uint32_t fwmark, const char *ifout,
case DESYNC_UDPLEN:
pkt1_len = sizeof(pkt1);
if (!prepare_udp_segment((struct sockaddr *)&src, (struct sockaddr *)&dst, ttl_orig,fooling_orig, params.udplen_increment, data_payload, len_payload, pkt1, &pkt1_len))
{
DLOG("could not construct packet with modified length. too large ?\n");
return res;
DLOG("resending original packet with increased by %u length\n", params.udplen_increment);
}
DLOG("resending original packet with increased by %d length\n", params.udplen_increment);
if (!rawsend((struct sockaddr *)&dst, desync_fwmark, ifout , pkt1, pkt1_len))
return res;
return drop;