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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/internet"
"github.com/xtls/xray-core/transport/internet/stat"
"github.com/xtls/xray-core/transport/internet/tls"
)
var useSplice bool
@ -225,9 +226,16 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
writeConn = inbound.Conn
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)
}
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 {
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
}
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 {
iConn := conn
statConn, ok := iConn.(*stat.CounterConnection)