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Skip impostor and loopback packets. Fixes #53.

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ValdikSS 2018-07-24 15:46:34 +03:00
parent d6c2b825aa
commit c4d0ba1297
1 changed files with 6 additions and 3 deletions
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9
src/goodbyedpi.c
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@ -59,7 +59,7 @@ WINSOCK_API_LINKAGE INT WSAAPI inet_pton(INT Family, LPCSTR pStringBuf, PVOID pA
/* #IPID# is a template to find&replace */
#define IPID_TEMPLATE "#IPID#"
#define FILTER_STRING_TEMPLATE \
"(tcp and " \
"(tcp and !impostor and !loopback and " \
"((inbound and (" \
"(" \
"(" \
@ -75,6 +75,7 @@ WINSOCK_API_LINKAGE INT WSAAPI inet_pton(INT Family, LPCSTR pStringBuf, PVOID pA
"(" DIVERT_NO_LOCALNETSv4_DST " or " DIVERT_NO_LOCALNETSv6_DST "))" \
"))"
#define FILTER_PASSIVE_STRING_TEMPLATE "inbound and ip and tcp and " \
"!impostor and !loopback and " \
"((ip.Id <= 0xF and ip.Id >= 0x0) " IPID_TEMPLATE ") and " \
"(tcp.SrcPort == 443 or tcp.SrcPort == 80) and tcp.Rst and " \
DIVERT_NO_LOCALNETSv4_SRC
@ -131,8 +132,10 @@ static char *filter_string = NULL;
static char *filter_passive_string = NULL;
static void add_filter_str(int proto, int port) {
const char *udp = " or (udp and (udp.SrcPort == %d or udp.DstPort == %d))";
const char *tcp = " or (tcp and (tcp.SrcPort == %d or tcp.DstPort == %d))";
const char *udp = " or (udp and !impostor and !loopback and " \
"(udp.SrcPort == %d or udp.DstPort == %d))";
const char *tcp = " or (tcp and !impostor and !loopback and " \
"(tcp.SrcPort == %d or tcp.DstPort == %d))";
char *current_filter = filter_string;
int new_filter_size = strlen(current_filter) +