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nfqws: QUIC initial dissection support

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bol-van
2022-03-25 16:59:58 +03:00
parent f10d17469e
commit dce5b4c6f0
30 changed files with 3421 additions and 54 deletions
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35
nfq/desync.c
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@@ -655,12 +655,37 @@ packet_process_result dpi_desync_udp_packet(uint8_t *data_pkt, size_t len_pkt, s
const uint8_t *fake;
size_t fake_size;
bool b;
char host[256];
bool bHaveHost=false;
if (IsQUICInitial(data_payload,len_payload))
{
DLOG("packet contains QUIC initial\n")
fake = params.fake_quic;
fake_size = params.fake_quic_size;
bool bIsCryptoHello;
bHaveHost=QUICExtractHostFromInitial(data_payload,len_payload,host,sizeof(host),&bIsCryptoHello);
if (bIsCryptoHello)
{
if (params.desync_skip_nosni && !bHaveHost)
{
DLOG("not applying tampering to QUIC ClientHello without hostname in the SNI\n")
return res;
}
}
else
{
if (params.desync_any_proto)
{
DLOG("QUIC initial without CRYPTO frame. applying tampering because desync_any_proto is set\n")
}
else
{
DLOG("not applying tampering to QUIC initial without CRYPTO frame\n")
return res;
}
}
}
else
{
@@ -670,6 +695,16 @@ packet_process_result dpi_desync_udp_packet(uint8_t *data_pkt, size_t len_pkt, s
fake_size = params.fake_unknown_udp_size;
}
if (bHaveHost)
{
DLOG("hostname: %s\n",host)
if (params.hostlist && !SearchHostList(params.hostlist,host,params.debug))
{
DLOG("not applying tampering to this request\n")
return res;
}
}
enum dpi_desync_mode desync_mode = params.desync_mode;
uint8_t fooling_orig = FOOL_NONE;