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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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8
nfq/nfqws.c
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@@ -545,7 +545,7 @@ static void exithelp()
" --dpi-desync-fake-unknown=<filename>\t; file containing unknown protocol fake payload\n"
" --dpi-desync-fake-quic=<filename>\t; file containing fake QUIC Initial\n"
" --dpi-desync-fake-unknown-udp=<filename> ; file containing unknown udp protocol fake payload\n"
" --dpi-desync-udplen-increment=<int>\t; increase udp packet length by N bytes (default %u)\n"
" --dpi-desync-udplen-increment=<int>\t; increase or decrease udp packet length by N bytes (default %u). negative values decrease length.\n"
" --dpi-desync-cutoff=[n|d|s]N\t\t; apply dpi desync only to packet numbers (n, default), data packet numbers (d), relative sequence (s) less than N\n"
" --hostlist=<filename>\t\t\t; apply dpi desync only to the listed hosts (one host per line, subdomains auto apply, gzip supported, multiple hostlists allowed)\n"
" --hostlist-exclude=<filename>\t\t; do not apply dpi desync to the listed hosts (one host per line, subdomains auto apply, gzip supported, multiple hostlists allowed)\n",
@@ -1004,7 +1004,11 @@ int main(int argc, char **argv)
load_file_or_exit(optarg,params.fake_unknown_udp,&params.fake_unknown_udp_size);
break;
case 33: /* dpi-desync-udplen-increment */
params.udplen_increment = (uint16_t)atoi(optarg);
if (sscanf(optarg,"%d",&params.udplen_increment)<1 || params.udplen_increment>0x7FFF || params.udplen_increment<-0x8000)
{
fprintf(stderr, "dpi-desync-udplen-increment must be integer within -32768..32767 range\n");
exit_clean(1);
}
break;
case 34: /* desync-cutoff */
if (!parse_cutoff(optarg, &params.desync_cutoff, &params.desync_cutoff_mode))