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nfqws: wssize

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bol-van
2021-03-12 14:33:48 +03:00
parent 76e52c350b
commit 53f36c7297
21 changed files with 156 additions and 86 deletions
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12
nfq/desync.c
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@@ -105,6 +105,18 @@ packet_process_result dpi_desync_packet(uint8_t *data_pkt, size_t len_pkt, struc
packet_process_result res=pass;
if (!!ip == !!ip6hdr) return res; // one and only one must be present
if (params.wsize && tcp_synack_segment(tcphdr))
{
tcp_rewrite_winsize(tcphdr, params.wsize, params.wscale);
res=modify;
}
if (params.wssize && !tcp_synack_segment(tcphdr))
{
tcp_rewrite_winsize(tcphdr, params.wssize, params.wsscale);
res=modify;
}
if (params.desync_mode==DESYNC_NONE && !params.hostcase && !params.hostnospace && !params.domcase) return res; // nothing to do. do not waste cpu
if (!(tcphdr->th_flags & TH_SYN) && len_payload)