1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
// Copyright 2025-2026 Dillution <[email protected]>.
//
// This file is part of DPIBreak.
//
// DPIBreak is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// DPIBreak is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with DPIBreak. If not, see <https://www.gnu.org/licenses/>.
use anyhow::Result;
use windivert::{
WinDivert,
layer::NetworkLayer,
prelude
};
use std::sync::{LazyLock, Mutex};
use std::thread;
use crate::{opt, pkt};
fn open_handle(filter: &str, flags: prelude::WinDivertFlags) -> WinDivert<NetworkLayer> {
use windivert::*;
let h = match WinDivert::network(&filter, 0, flags) {
Ok(h) => {
crate::info!("windivert: open: {}", filter);
h
},
Err(e) => {
crate::error!("windivert: {}", e);
crate::error!("windivert: {}", filter);
std::process::exit(1);
}
};
h
}
pub fn bootstrap() -> Result<()> {
if opt::daemon() {
service_main();
}
Ok(())
}
static SEND_HANDLE: LazyLock<Mutex<WinDivert<NetworkLayer>>> = LazyLock::new(|| {
let flags = prelude::WinDivertFlags::new()
.set_send_only();
Mutex::new(open_handle("false", flags))
});
fn send_to_raw_1(pkt: &[u8]) -> Result<()> {
use windivert::*;
let mut p = unsafe { packet::WinDivertPacket::<NetworkLayer>::new(pkt.to_vec()) };
p.address.set_outbound(true);
p.address.set_ip_checksum(false);
p.address.set_tcp_checksum(false); // For badsum; anyway it is already calculated
p.address.set_impostor(true); // to prevent inf loop
SEND_HANDLE.lock().expect("mutex poisoned").send(&p)?;
Ok(())
}
pub fn send_to_raw(pkt: &[u8], _dst: std::net::IpAddr) -> Result<()> {
send_to_raw_1(pkt)
}
macro_rules! recv_loop {
($handle:expr, $pkt:ident => $body:expr) => {
let mut buf = vec![0u8; 65536];
loop {
match $handle.recv(Some(&mut buf)) {
Ok($pkt) => { $body }
Err(e) => { crate::warn!("windivert: recv: {}", e); }
}
}
};
}
pub fn run() -> Result<()> {
let mut buf = Vec::<u8>::with_capacity(super::PACKET_SIZE_CAP);
if opt::fake_autottl() {
let handle = open_handle(
"!outbound and tcp and tcp.SrcPort == 443 and tcp.Syn and tcp.Ack",
prelude::WinDivertFlags::new().set_sniff()
);
thread::spawn(move || { recv_loop!(handle, pkt => pkt::put_hop(&pkt.data)); });
}
let divert = open_handle(
concat!(
"outbound and tcp and tcp.DstPort == 443",
" ", "and tcp.Payload[0] == 22",
" ", "and tcp.Payload[5] == 1 and !impostor"
),
prelude::WinDivertFlags::new()
);
crate::splash!("{}", super::MESSAGE_AT_RUN);
recv_loop!(divert, pkt => {
crate::handle_packet!(
&pkt.data,
&mut buf,
handled => {},
rejected => send_to_raw_1(&pkt.data)?
)
});
}
fn service_run() {
if run().is_err() {
std::process::exit(1);
}
std::process::exit(0);
}
fn service_main() {
use windows_services::Command;
match windows_services::Service::new()
.can_stop()
.run(|_, command| {
match command {
Command::Start => {
std::thread::spawn(|| service_run());
}
Command::Stop => {}
_ => {}
}
}) {
Ok(_) => {}
Err(e) => {
println!("{e}");
std::process::exit(1);
}
};
}
|
