// Copyright (C) 2016 The Syncthing Authors. // // This Source Code Form is subject to the terms of the Mozilla Public // License, v. 2.0. If a copy of the MPL was not distributed with this file, // You can obtain one at https://mozilla.org/MPL/2.0/. package nat import ( "net" "os" "testing" "github.com/syncthing/syncthing/lib/config" "github.com/syncthing/syncthing/lib/events" "github.com/syncthing/syncthing/lib/protocol" ) func TestMappingValidGateway(t *testing.T) { a := net.ParseIP("10.0.0.1") b := net.ParseIP("192.168.0.1") tests := []struct { mappingLocalIP net.IP gatewayLocalIP net.IP expected bool }{ // Any of the IPs is nil or unspecified implies correct {nil, nil, true}, {net.IPv4zero, net.IPv4zero, true}, {nil, net.IPv4zero, true}, {net.IPv4zero, nil, true}, {a, nil, true}, {b, nil, true}, {a, net.IPv4zero, true}, {b, net.IPv4zero, true}, {nil, a, true}, {nil, b, true}, {net.IPv4zero, a, true}, {net.IPv4zero, b, true}, // IPs are the same implies correct {a, a, true}, {b, b, true}, // IPs are specified and different, implies incorrect {a, b, false}, {b, a, false}, } for _, test := range tests { m := Mapping{ address: Address{ IP: test.mappingLocalIP, }, } result := m.validGateway(test.gatewayLocalIP) if result != test.expected { t.Errorf("Incorrect: local %s gateway %s result %t expected %t", test.mappingLocalIP, test.gatewayLocalIP, result, test.expected) } } } func TestMappingClearAddresses(t *testing.T) { tmpFile, err := os.CreateTemp("", "syncthing-testConfig-") if err != nil { t.Fatal(err) } w := config.Wrap(tmpFile.Name(), config.Configuration{}, protocol.LocalDeviceID, events.NoopLogger) defer os.RemoveAll(tmpFile.Name()) tmpFile.Close() natSvc := NewService(protocol.EmptyDeviceID, w) // Mock a mapped port; avoids the need to actually map a port ip := net.ParseIP("192.168.0.1") m := natSvc.NewMapping(TCP, IPv4Only, ip, 1024) m.extAddresses["test"] = []Address{{ IP: ip, Port: 1024, }} // Now try and remove the mapped port; prior to #4829 this deadlocked natSvc.RemoveMapping(m) }