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Processing of TCP packets sent by the SYSTEM process using windows-redirector.exe #204

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Processing of TCP packets sent by the SYSTEM process using windows-redirector.exe #204

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68 changes: 68 additions & 0 deletions mitmproxy-windows/redirector/src/main2.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -232,11 +232,29 @@
if address.process_id() == 4 {
// We get some weird operating system events here, which are not useful.
debug!("Skipping PID 4");

clear_connections(
connection_id,

Check failure on line 237 in mitmproxy-windows/redirector/src/main2.rs

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GitHub Actions / test (windows-latest, 1.80, --exclude macos-certificate-truster) 

cannot find value `connection_id` in this scope
&mut connections,
&inject_handle,
&mut ipc_tx,
address,
).await;

continue;
}

let Ok(proto) = TransportProtocol::try_from(address.protocol()) else {
warn!("Unknown transport protocol: {}", address.protocol());

clear_connections(
connection_id,

Check failure on line 251 in mitmproxy-windows/redirector/src/main2.rs

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GitHub Actions / test (windows-latest, 1.80, --exclude macos-certificate-truster) 

cannot find value `connection_id` in this scope
&mut connections,
&inject_handle,
&mut ipc_tx,
address,
).await;

continue;
};
let connection_id = ConnectionId {
Expand All @@ -246,6 +264,15 @@
};

if connection_id.src.ip().is_multicast() || connection_id.dst.ip().is_multicast() {

clear_connections(
connection_id,
&mut connections,
&inject_handle,
&mut ipc_tx,
address,
).await;

continue;
}

Expand Down Expand Up @@ -396,6 +423,47 @@
}
}

async fn clear_connections(
connection_id: ConnectionId,
connections: &mut LruCache<ConnectionId, ConnectionState>,
inject_handle: &WinDivert<NetworkLayer>,
ipc_tx: &mut UnboundedSender<ipc::PacketWithMeta>,
address: WinDivertAddress<SocketLayer>,
) {
match address.event() {
WinDivertEvent::SocketConnect | WinDivertEvent::SocketAccept => {
let make_entry = match connections.get(&connection_id) {
None => true,
Some(e) => matches!(e, ConnectionState::Unknown(_)),
};

debug!(
"{:<15?} make_entry={} pid={} {}",
address.event(),
make_entry,
address.process_id(),
connection_id
);

if !make_entry {
return;
}

let action = ConnectionAction::None;
let _ = insert_into_connections(
connection_id,
&action,
&address.event(),
connections,
inject_handle,
ipc_tx,
)
.await;
}
_ => {}
}
}

async fn handle_ipc(
mut ipc: NamedPipeClient,
mut ipc_rx: UnboundedReceiver<ipc::PacketWithMeta>,
Expand Down
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