// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package ipn import ( "errors" "fmt" "io/ioutil" "os" "reflect" "testing" "time" "inet.af/netaddr" "tailscale.com/tailcfg" "tailscale.com/tstest" "tailscale.com/types/persist" "tailscale.com/types/preftype" "tailscale.com/types/wgkey" ) func fieldsOf(t reflect.Type) (fields []string) { for i := 0; i < t.NumField(); i++ { fields = append(fields, t.Field(i).Name) } return } func TestPrefsEqual(t *testing.T) { tstest.PanicOnLog() prefsHandles := []string{"ControlURL", "RouteAll", "AllowSingleHosts", "ExitNodeID", "ExitNodeIP", "CorpDNS", "WantRunning", "ShieldsUp", "AdvertiseTags", "Hostname", "OSVersion", "DeviceModel", "NotepadURLs", "ForceDaemon", "AdvertiseRoutes", "NoSNAT", "NetfilterMode", "Persist"} if have := fieldsOf(reflect.TypeOf(Prefs{})); !reflect.DeepEqual(have, prefsHandles) { t.Errorf("Prefs.Equal check might be out of sync\nfields: %q\nhandled: %q\n", have, prefsHandles) } nets := func(strs ...string) (ns []netaddr.IPPrefix) { for _, s := range strs { n, err := netaddr.ParseIPPrefix(s) if err != nil { panic(err) } ns = append(ns, n) } return ns } tests := []struct { a, b *Prefs want bool }{ { &Prefs{}, nil, false, }, { nil, &Prefs{}, false, }, { &Prefs{}, &Prefs{}, true, }, { &Prefs{ControlURL: "https://login.tailscale.com"}, &Prefs{ControlURL: "https://login.private.co"}, false, }, { &Prefs{ControlURL: "https://login.tailscale.com"}, &Prefs{ControlURL: "https://login.tailscale.com"}, true, }, { &Prefs{RouteAll: true}, &Prefs{RouteAll: false}, false, }, { &Prefs{RouteAll: true}, &Prefs{RouteAll: true}, true, }, { &Prefs{AllowSingleHosts: true}, &Prefs{AllowSingleHosts: false}, false, }, { &Prefs{AllowSingleHosts: true}, &Prefs{AllowSingleHosts: true}, true, }, { &Prefs{ExitNodeID: "n1234"}, &Prefs{}, false, }, { &Prefs{ExitNodeID: "n1234"}, &Prefs{ExitNodeID: "n1234"}, true, }, { &Prefs{ExitNodeIP: netaddr.MustParseIP("1.2.3.4")}, &Prefs{}, false, }, { &Prefs{ExitNodeIP: netaddr.MustParseIP("1.2.3.4")}, &Prefs{ExitNodeIP: netaddr.MustParseIP("1.2.3.4")}, true, }, { &Prefs{CorpDNS: true}, &Prefs{CorpDNS: false}, false, }, { &Prefs{CorpDNS: true}, &Prefs{CorpDNS: true}, true, }, { &Prefs{WantRunning: true}, &Prefs{WantRunning: false}, false, }, { &Prefs{WantRunning: true}, &Prefs{WantRunning: true}, true, }, { &Prefs{NoSNAT: true}, &Prefs{NoSNAT: false}, false, }, { &Prefs{NoSNAT: true}, &Prefs{NoSNAT: true}, true, }, { &Prefs{Hostname: "android-host01"}, &Prefs{Hostname: "android-host02"}, false, }, { &Prefs{Hostname: ""}, &Prefs{Hostname: ""}, true, }, { &Prefs{NotepadURLs: true}, &Prefs{NotepadURLs: false}, false, }, { &Prefs{NotepadURLs: true}, &Prefs{NotepadURLs: true}, true, }, { &Prefs{ShieldsUp: true}, &Prefs{ShieldsUp: false}, false, }, { &Prefs{ShieldsUp: true}, &Prefs{ShieldsUp: true}, true, }, { &Prefs{AdvertiseRoutes: nil}, &Prefs{AdvertiseRoutes: []netaddr.IPPrefix{}}, true, }, { &Prefs{AdvertiseRoutes: []netaddr.IPPrefix{}}, &Prefs{AdvertiseRoutes: []netaddr.IPPrefix{}}, true, }, { &Prefs{AdvertiseRoutes: nets("192.168.0.0/24", "10.1.0.0/16")}, &Prefs{AdvertiseRoutes: nets("192.168.1.0/24", "10.2.0.0/16")}, false, }, { &Prefs{AdvertiseRoutes: nets("192.168.0.0/24", "10.1.0.0/16")}, &Prefs{AdvertiseRoutes: nets("192.168.0.0/24", "10.2.0.0/16")}, false, }, { &Prefs{AdvertiseRoutes: nets("192.168.0.0/24", "10.1.0.0/16")}, &Prefs{AdvertiseRoutes: nets("192.168.0.0/24", "10.1.0.0/16")}, true, }, { &Prefs{NetfilterMode: preftype.NetfilterOff}, &Prefs{NetfilterMode: preftype.NetfilterOn}, false, }, { &Prefs{NetfilterMode: preftype.NetfilterOn}, &Prefs{NetfilterMode: preftype.NetfilterOn}, true, }, { &Prefs{Persist: &persist.Persist{}}, &Prefs{Persist: &persist.Persist{LoginName: "dave"}}, false, }, { &Prefs{Persist: &persist.Persist{LoginName: "dave"}}, &Prefs{Persist: &persist.Persist{LoginName: "dave"}}, true, }, } for i, tt := range tests { got := tt.a.Equals(tt.b) if got != tt.want { t.Errorf("%d. Equal = %v; want %v", i, got, tt.want) } } } func checkPrefs(t *testing.T, p Prefs) { var err error var p2, p2c *Prefs var p2b *Prefs pp := p.Pretty() if pp == "" { t.Fatalf("default p.Pretty() failed\n") } t.Logf("\npp: %#v\n", pp) b := p.ToBytes() if len(b) == 0 { t.Fatalf("default p.ToBytes() failed\n") } if !p.Equals(&p) { t.Fatalf("p != p\n") } p2 = p.Clone() p2.RouteAll = true if p.Equals(p2) { t.Fatalf("p == p2\n") } p2b, err = PrefsFromBytes(p2.ToBytes(), false) if err != nil { t.Fatalf("PrefsFromBytes(p2) failed\n") } p2p := p2.Pretty() p2bp := p2b.Pretty() t.Logf("\np2p: %#v\np2bp: %#v\n", p2p, p2bp) if p2p != p2bp { t.Fatalf("p2p != p2bp\n%#v\n%#v\n", p2p, p2bp) } if !p2.Equals(p2b) { t.Fatalf("p2 != p2b\n%#v\n%#v\n", p2, p2b) } p2c = p2.Clone() if !p2b.Equals(p2c) { t.Fatalf("p2b != p2c\n") } } func TestBasicPrefs(t *testing.T) { tstest.PanicOnLog() p := Prefs{ ControlURL: "https://login.tailscale.com", } checkPrefs(t, p) } func TestPrefsPersist(t *testing.T) { tstest.PanicOnLog() c := persist.Persist{ LoginName: "test@example.com", } p := Prefs{ ControlURL: "https://login.tailscale.com", CorpDNS: true, Persist: &c, } checkPrefs(t, p) } func TestPrefsPretty(t *testing.T) { tests := []struct { p Prefs os string want string }{ { Prefs{}, "linux", "Prefs{ra=false mesh=false dns=false want=false routes=[] nf=off Persist=nil}", }, { Prefs{}, "windows", "Prefs{ra=false mesh=false dns=false want=false Persist=nil}", }, { Prefs{ShieldsUp: true}, "windows", "Prefs{ra=false mesh=false dns=false want=false shields=true Persist=nil}", }, { Prefs{AllowSingleHosts: true}, "windows", "Prefs{ra=false dns=false want=false Persist=nil}", }, { Prefs{ NotepadURLs: true, AllowSingleHosts: true, }, "windows", "Prefs{ra=false dns=false want=false notepad=true Persist=nil}", }, { Prefs{ AllowSingleHosts: true, WantRunning: true, ForceDaemon: true, // server mode }, "windows", "Prefs{ra=false dns=false want=true server=true Persist=nil}", }, { Prefs{ AllowSingleHosts: true, WantRunning: true, ControlURL: "http://localhost:1234", AdvertiseTags: []string{"tag:foo", "tag:bar"}, }, "darwin", `Prefs{ra=false dns=false want=true tags=tag:foo,tag:bar url="http://localhost:1234" Persist=nil}`, }, { Prefs{ Persist: &persist.Persist{}, }, "linux", `Prefs{ra=false mesh=false dns=false want=false routes=[] nf=off Persist{lm=, o=, n= u=""}}`, }, { Prefs{ Persist: &persist.Persist{ PrivateNodeKey: wgkey.Private{1: 1}, }, }, "linux", `Prefs{ra=false mesh=false dns=false want=false routes=[] nf=off Persist{lm=, o=, n=[B1VKl] u=""}}`, }, { Prefs{ ExitNodeIP: netaddr.MustParseIP("1.2.3.4"), }, "linux", `Prefs{ra=false mesh=false dns=false want=false exit=1.2.3.4 routes=[] nf=off Persist=nil}`, }, { Prefs{ ExitNodeID: tailcfg.StableNodeID("myNodeABC"), }, "linux", `Prefs{ra=false mesh=false dns=false want=false exit=myNodeABC routes=[] nf=off Persist=nil}`, }, } for i, tt := range tests { got := tt.p.pretty(tt.os) if got != tt.want { t.Errorf("%d. wrong String:\n got: %s\nwant: %s\n", i, got, tt.want) } } } func TestLoadPrefsNotExist(t *testing.T) { bogusFile := fmt.Sprintf("/tmp/not-exist-%d", time.Now().UnixNano()) p, err := LoadPrefs(bogusFile) if errors.Is(err, os.ErrNotExist) { // expected. return } t.Fatalf("unexpected prefs=%#v, err=%v", p, err) } // TestLoadPrefsFileWithZeroInIt verifies that LoadPrefs hanldes corrupted input files. // See issue #954 for details. func TestLoadPrefsFileWithZeroInIt(t *testing.T) { f, err := ioutil.TempFile("", "TestLoadPrefsFileWithZeroInIt") if err != nil { t.Fatal(err) } path := f.Name() if _, err := f.Write(jsonEscapedZero); err != nil { t.Fatal(err) } f.Close() defer os.Remove(path) p, err := LoadPrefs(path) if errors.Is(err, os.ErrNotExist) { // expected. return } t.Fatalf("unexpected prefs=%#v, err=%v", p, err) }