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base: 2gW94:0.0.8
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2gW94:master 2gW94:more-fakes 2gW94:EgorWeders-patch-1 2gW94:quic_block 2gW94:test_windres 2gW94:openvpn 2gW94:windivert2 2gW94:masterv6 2gW94:ipv6 2gW94:windivert-test
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compare: 2gW94:0.0.9
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2gW94:master 2gW94:more-fakes 2gW94:EgorWeders-patch-1 2gW94:quic_block 2gW94:test_windres 2gW94:openvpn 2gW94:windivert2 2gW94:masterv6 2gW94:ipv6 2gW94:windivert-test
2gW94:0.2.3rc3 2gW94:0.2.3rc2 2gW94:0.2.3rc1 2gW94:0.2.2 2gW94:0.2.1 2gW94:0.2.0 2gW94:0.1.8 2gW94:0.1.7 2gW94:0.1.6 2gW94:0.1.5 2gW94:0.1.5rc3 2gW94:0.1.5rc2 2gW94:0.1.5rc1 2gW94:0.1.4 2gW94:0.1.3 2gW94:0.1.2 2gW94:0.1.2rc3 2gW94:0.1.2rc2 2gW94:0.1.2rc1 2gW94:0.1.1 2gW94:0.1.0 2gW94:0.0.9 2gW94:0.0.8 2gW94:0.0.7 2gW94:0.0.6 2gW94:0.0.5 2gW94:0.0.4 2gW94:0.0.3 2gW94:0.0.2 2gW94:0.0.1

2 Commits
0.0.8 ... 0.0.9

Author SHA1 Message Date
ValdikSS
2fe377a23f Do not handle traffic from private IP ranges 2017-08-15 14:09:47 +03:00
ValdikSS
b74c974235 Print error message if filter initialization fails 2017-08-15 14:09:06 +03:00
1 changed files with 39 additions and 9 deletions
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44
goodbyedpi.c
View File

@@ -21,6 +21,21 @@
#define IPV4_TOTALLEN_OFFSET 2
#define TCP_WINDOWSIZE_OFFSET 14
#define DIVERT_NO_LOCALNETS_DST "(" \
"(ip.DstAddr < 127.0.0.1 or ip.DstAddr > 127.255.255.255) and " \
"(ip.DstAddr < 10.0.0.0 or ip.DstAddr > 10.255.255.255) and " \
"(ip.DstAddr < 192.168.0.0 or ip.DstAddr > 192.168.255.255) and " \
"(ip.DstAddr < 172.16.0.0 or ip.DstAddr > 172.31.255.255) and " \
"(ip.DstAddr < 169.254.0.0 or ip.DstAddr > 169.254.255.255)" \
")"
#define DIVERT_NO_LOCALNETS_SRC "(" \
"(ip.SrcAddr < 127.0.0.1 or ip.SrcAddr > 127.255.255.255) and " \
"(ip.SrcAddr < 10.0.0.0 or ip.SrcAddr > 10.255.255.255) and " \
"(ip.SrcAddr < 192.168.0.0 or ip.SrcAddr > 192.168.255.255) and " \
"(ip.SrcAddr < 172.16.0.0 or ip.SrcAddr > 172.31.255.255) and " \
"(ip.SrcAddr < 169.254.0.0 or ip.SrcAddr > 169.254.255.255)" \
")"
static HANDLE filters[MAX_FILTERS];
static int filter_num = 0;
static const char *http10_redirect_302 = "HTTP/1.0 302 ";
@@ -62,9 +77,15 @@ static char* dumb_memmem(const char* haystack, int hlen, const char* needle, int
}
static HANDLE init(char *filter, UINT64 flags) {
LPTSTR errormessage = NULL;
filter = WinDivertOpen(filter, WINDIVERT_LAYER_NETWORK, 0, flags);
if (filter != INVALID_HANDLE_VALUE)
return filter;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, GetLastError(), MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
(LPTSTR)&errormessage, 0, NULL);
printf("%s", errormessage);
return NULL;
}
@@ -232,20 +253,29 @@ int main(int argc, char *argv[]) {
filter_num = 0;
if (do_passivedpi) {
/* Filter for inbound RST packets with ID = 0 or 1 */
filters[filter_num] = init("inbound and (ip.Id == 0x0001 or ip.Id == 0x0000) and "
"(tcp.SrcPort == 443 or tcp.SrcPort == 80) and tcp.Rst",
/* IPv4 filter for inbound RST packets with ID = 0 or 1 */
filters[filter_num] = init(
"inbound and ip and tcp and "
"(ip.Id == 0x0001 or ip.Id == 0x0000) and "
"(tcp.SrcPort == 443 or tcp.SrcPort == 80) and tcp.Rst and "
DIVERT_NO_LOCALNETS_SRC,
WINDIVERT_FLAG_DROP);
filter_num++;
}
/*
* Filter for inbound HTTP redirection packets and
* IPv4 filter for inbound HTTP redirection packets and
* active DPI circumvention
*/
filters[filter_num] = init("(inbound and (ip.Id == 0x0001 or ip.Id == 0x0000) and tcp.SrcPort == 80 and tcp.Ack) "
"or (inbound and (tcp.SrcPort == 80 or tcp.SrcPort == 443) and tcp.Ack and tcp.Syn) "
"or (outbound and (tcp.DstPort == 80 or tcp.DstPort == 443) and tcp.Ack)",
filters[filter_num] = init("ip and tcp and "
"(inbound and (("
"((ip.Id == 0x0001 or ip.Id == 0x0000) and tcp.SrcPort == 80 and tcp.Ack) or "
"((tcp.SrcPort == 80 or tcp.SrcPort == 443) and tcp.Ack and tcp.Syn)"
") and " DIVERT_NO_LOCALNETS_SRC ") or "
"(outbound and "
"(tcp.DstPort == 80 or tcp.DstPort == 443) and tcp.Ack and "
DIVERT_NO_LOCALNETS_DST ")"
")",
0);
w_filter = filters[filter_num];