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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package tailnetlock
import (
"bytes"
"encoding/json"
"net/http/httptest"
"strings"
"testing"
"tailscale.com/ipn/ipnlocal"
"tailscale.com/tka"
"tailscale.com/types/key"
"tailscale.com/util/must"
)
func TestHandleC2NDebugTKA(t *testing.T) {
makeTKA := func(length int) (tka.CompactableChonk, *tka.Authority) {
if length == 0 {
return nil, nil
}
disablementSecret := bytes.Repeat([]byte{0xa5}, 32)
signerKey := key.NewNLPrivate()
key1 := tka.Key{Kind: tka.Key25519, Public: signerKey.Public().Verifier(), Votes: 2}
chonk := tka.ChonkMem()
authority, _, err := tka.Create(chonk, tka.State{
Keys: []tka.Key{key1},
DisablementValues: [][]byte{tka.DisablementKDF(disablementSecret)},
}, signerKey)
if err != nil {
t.Fatalf("tka.Create() failed: %v", err)
}
for range length - 1 {
updater := authority.NewUpdater(signerKey)
key2 := tka.Key{Kind: tka.Key25519, Public: key.NewNLPrivate().Public().Verifier(), Votes: 2}
updater.AddKey(key2)
aums := must.Get(updater.Finalize(chonk))
must.Do(authority.Inform(chonk, aums))
}
return chonk, authority
}
bodyHead := func(body *bytes.Buffer) string {
count := 0
var sb strings.Builder
for line := range strings.Lines(body.String()) {
if count == 10 {
sb.WriteString("...")
break
}
sb.WriteString(line)
count++
}
return sb.String()
}
// matches [jsonoutput.PrintNetworkLockLogJSONV1]
type response struct {
SchemaVersion string
Messages []any
}
t.Run("tailnet-lock-disabled", func(t *testing.T) {
b := ipnlocal.LocalBackendWithTKAForTest(nil, nil)
req := httptest.NewRequest("GET", "/debug/tka/log", nil)
rec := httptest.NewRecorder()
b.HandleC2NForTest(rec, req)
if rec.Code != 400 {
t.Fatalf("got status code: %v, want: 400\nBody: %s", rec.Code, rec.Body)
}
})
t.Run("tailnet-lock-enabled", func(t *testing.T) {
chonk, authority := makeTKA(2)
b := ipnlocal.LocalBackendWithTKAForTest(chonk, authority)
req := httptest.NewRequest("GET", "/debug/tka/log", nil)
rec := httptest.NewRecorder()
b.HandleC2NForTest(rec, req)
if rec.Code != 200 {
t.Fatalf("got status code: %v, want: 200\nBody: %s", rec.Code, bodyHead(rec.Body))
}
var got response
if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
t.Fatalf("couldn't parse JSON: %v\nbody: %s", err, bodyHead(rec.Body))
}
if len(got.Messages) != 2 {
t.Fatalf("got %d items, want 2", len(got.Messages))
}
})
t.Run("default-limit", func(t *testing.T) {
chonk, authority := makeTKA(60)
b := ipnlocal.LocalBackendWithTKAForTest(chonk, authority)
req := httptest.NewRequest("GET", "/debug/tka/log", nil)
rec := httptest.NewRecorder()
b.HandleC2NForTest(rec, req)
if rec.Code != 200 {
t.Fatalf("got status code: %v, want: 200\nBody: %s", rec.Code, bodyHead(rec.Body))
}
var got response
if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
t.Fatalf("couldn't parse JSON: %v\nbody: %s", err, bodyHead(rec.Body))
}
if len(got.Messages) != 50 {
t.Fatalf("got %d items, want 50", len(got.Messages))
}
})
t.Run("override-limit", func(t *testing.T) {
chonk, authority := makeTKA(65)
b := ipnlocal.LocalBackendWithTKAForTest(chonk, authority)
req := httptest.NewRequest("GET", "/debug/tka/log?limit=60", nil)
rec := httptest.NewRecorder()
b.HandleC2NForTest(rec, req)
if rec.Code != 200 {
t.Fatalf("got status code: %v, want: 200\nBody: %s", rec.Code, bodyHead(rec.Body))
}
var got response
if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
t.Fatalf("couldn't parse JSON: %v\nbody: %s", err, bodyHead(rec.Body))
}
if len(got.Messages) != 60 {
t.Fatalf("got %d items, want 60", len(got.Messages))
}
})
}
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