eburet-oss/sing-tun-lx
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add stateless DNS hijack

Browse source
This commit is contained in:
世界 2026-07-19 13:02:55 +08:00
parent 1ba7d79118
commit 79084fa798
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
5 changed files with 113 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

20
stack_gvisor_udp.go
View file

@ -71,18 +71,26 @@ func (f *UDPForwarder) PreparePacketConnection(source M.Socksaddr, destination M
firstPacket = append(firstPacket[:len(firstPacket):len(firstPacket)], view.AsSlice()...)
}
})
var sourceNetwork tcpip.NetworkProtocolNumber
if source.Addr.Is4() {
sourceNetwork = header.IPv4ProtocolNumber
} else {
sourceNetwork = header.IPv6ProtocolNumber
}
switch f.handler.JudgeFlow(uint8(header.UDPProtocolNumber), source.AddrPort(), destination.AddrPort(), firstPacket).Action {
case ActionReject:
gWriteUnreachable(f.stack, userData.(*stack.PacketBuffer))
return false, nil, nil, nil
case ActionDrop:
return false, nil, nil, nil
}
var sourceNetwork tcpip.NetworkProtocolNumber
if source.Addr.Is4() {
sourceNetwork = header.IPv4ProtocolNumber
} else {
sourceNetwork = header.IPv6ProtocolNumber
case ActionHijackDNS:
f.handler.NewDNSPacket(firstPacket, source, destination, &UDPBackWriter{
stack: f.stack,
source: AddressFromAddr(source.Addr),
sourcePort: source.Port,
sourceNetwork: sourceNetwork,
})
return false, nil, nil, nil
}
writer := &UDPBackWriter{
stack: f.stack,