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nfqws: --dpi-desync-hostfakesplit-mod

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bol-van
2025-09-22 09:51:25 +03:00
parent d8f9ba29c3
commit 170e9d7ffd
3 changed files with 91 additions and 4 deletions
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53
nfq/nfqws.c
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@@ -1098,6 +1098,49 @@ err:
return false;
}
static bool parse_hostfakesplit_mod(char *opt, struct hostfakesplit_mod *hfs_mod)
{
char *e,*e2,*p,c,c2;
for (p=opt ; p ; )
{
for (e2=p ; *e2 && *e2!=',' && *e2!='=' ; e2++);
if ((e = strchr(e2,',')))
{
c=*e;
*e=0;
}
if (*e2=='=')
{
c2=*e2;
*e2=0;
}
else
e2=NULL;
if (!strcmp(p,"host"))
{
if (!e2 || !e2[1] || e2[1]==',') goto err;
strncpy(hfs_mod->host,e2+1,sizeof(hfs_mod->host)-1);
hfs_mod->host[sizeof(hfs_mod->host)-1-1]=0;
hfs_mod->host_size = strlen(hfs_mod->host); // cache value
}
else if (strcmp(p,"none"))
goto err;
if (e2) *e2=c2;
if (e) *e++=c;
p = e;
}
return true;
err:
if (e2) *e2=c2;
if (e) *e++=c;
return false;
}
static bool parse_fooling(char *opt, unsigned int *fooling_mode)
{
char *e,*p = opt;
@@ -1642,6 +1685,7 @@ static void exithelp(void)
" --dpi-desync-split-seqovl-pattern=<filename>|0xHEX ; pattern for the fake part of overlap\n"
" --dpi-desync-fakedsplit-pattern=<filename>|0xHEX ; fake pattern for fakedsplit/fakeddisorder\n"
" --dpi-desync-hostfakesplit-midhost=marker+N|marker-N ; additionally split real hostname at specified marker. must be within host..endhost or won't be splitted.\n"
" --dpi-desync-hostfakesplit-mod=mod[,mod]\t; can be none or host=<hostname>\n"
" --dpi-desync-ipfrag-pos-tcp=<8..%u>\t\t; ip frag position starting from the transport header. multiple of 8, default %u.\n"
" --dpi-desync-ipfrag-pos-udp=<8..%u>\t\t; ip frag position starting from the transport header. multiple of 8, default %u.\n"
" --dpi-desync-ts-increment=<int|0xHEX>\t\t; ts fooling TSval signed increment. default %d\n"
@@ -1821,6 +1865,7 @@ enum opt_indices {
IDX_DPI_DESYNC_SPLIT_SEQOVL_PATTERN,
IDX_DPI_DESYNC_FAKEDSPLIT_PATTERN,
IDX_DPI_DESYNC_HOSTFAKESPLIT_MIDHOST,
IDX_DPI_DESYNC_HOSTFAKESPLIT_MOD,
IDX_DPI_DESYNC_IPFRAG_POS_TCP,
IDX_DPI_DESYNC_IPFRAG_POS_UDP,
IDX_DPI_DESYNC_TS_INCREMENT,
@@ -1950,6 +1995,7 @@ static const struct option long_options[] = {
[IDX_DPI_DESYNC_SPLIT_SEQOVL_PATTERN] = {"dpi-desync-split-seqovl-pattern", required_argument, 0, 0},
[IDX_DPI_DESYNC_FAKEDSPLIT_PATTERN] = {"dpi-desync-fakedsplit-pattern", required_argument, 0, 0},
[IDX_DPI_DESYNC_HOSTFAKESPLIT_MIDHOST] = {"dpi-desync-hostfakesplit-midhost", required_argument, 0, 0},
[IDX_DPI_DESYNC_HOSTFAKESPLIT_MOD] = {"dpi-desync-hostfakesplit-mod", required_argument, 0, 0},
[IDX_DPI_DESYNC_IPFRAG_POS_TCP] = {"dpi-desync-ipfrag-pos-tcp", required_argument, 0, 0},
[IDX_DPI_DESYNC_IPFRAG_POS_UDP] = {"dpi-desync-ipfrag-pos-udp", required_argument, 0, 0},
[IDX_DPI_DESYNC_TS_INCREMENT] = {"dpi-desync-ts-increment", required_argument, 0, 0},
@@ -2599,6 +2645,13 @@ int main(int argc, char **argv)
exit_clean(1);
}
break;
case IDX_DPI_DESYNC_HOSTFAKESPLIT_MOD:
if (!parse_hostfakesplit_mod(optarg,&dp->hfs_mod))
{
DLOG_ERR("Invalid fakehostsplit mod : %s\n",optarg);
exit_clean(1);
}
break;
case IDX_DPI_DESYNC_IPFRAG_POS_TCP:
if (sscanf(optarg,"%u",&dp->desync_ipfrag_pos_tcp)<1 || dp->desync_ipfrag_pos_tcp<1 || dp->desync_ipfrag_pos_tcp>DPI_DESYNC_MAX_FAKE_LEN)
{