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Don't do raw/splice copy in case of MITM

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This commit is contained in:
yuhan6665 2024-07-24 19:47:26 -04:00
parent 8a4217fdf5
commit 4cb2a128db
1 changed files with 23 additions and 2 deletions
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23
proxy/freedom/freedom.go
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@ -28,6 +28,7 @@ import (
"github.com/xtls/xray-core/transport" "github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet" "github.com/xtls/xray-core/transport/internet"
"github.com/xtls/xray-core/transport/internet/stat" "github.com/xtls/xray-core/transport/internet/stat"
"github.com/xtls/xray-core/transport/internet/tls"
) )
var useSplice bool var useSplice bool
@ -225,9 +226,16 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
writeConn = inbound.Conn writeConn = inbound.Conn
inTimer = inbound.Timer inTimer = inbound.Timer
} }
if !isTLSConn(conn) { // it would be tls conn in special use case of MITM, we need to let link handle traffic
return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer, inTimer) return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer, inTimer)
} }
reader := NewPacketReader(conn, UDPOverride) }
var reader buf.Reader
if destination.Network == net.Network_TCP {
reader = buf.NewReader(conn)
} else {
reader = NewPacketReader(conn, UDPOverride)
}
if err := buf.Copy(reader, output, buf.UpdateActivity(timer)); err != nil { if err := buf.Copy(reader, output, buf.UpdateActivity(timer)); err != nil {
return errors.New("failed to process response").Base(err) return errors.New("failed to process response").Base(err)
} }
@ -245,6 +253,19 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
return nil return nil
} }
func isTLSConn(conn stat.Connection) bool {
if conn != nil {
statConn, ok := conn.(*stat.CounterConnection)
if ok {
conn = statConn.Connection
}
if _, ok := conn.(*tls.Conn); ok {
return true
}
}
return false
}
func NewPacketReader(conn net.Conn, UDPOverride net.Destination) buf.Reader { func NewPacketReader(conn net.Conn, UDPOverride net.Destination) buf.Reader {
iConn := conn iConn := conn
statConn, ok := iConn.(*stat.CounterConnection) statConn, ok := iConn.(*stat.CounterConnection)