mirror of
https://github.com/tailscale/tailscale.git
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e3dccfd7ff
Also add tests to verify the parsing logic. Signed-off-by: Maisem Ali <maisem@tailscale.com>
112 lines
2.5 KiB
Go
112 lines
2.5 KiB
Go
// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package chirp
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import (
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"bufio"
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"errors"
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"fmt"
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"net"
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"path/filepath"
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"strings"
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"testing"
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)
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type fakeBIRD struct {
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net.Listener
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protocolsEnabled map[string]bool
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sock string
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}
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func newFakeBIRD(t *testing.T, protocols ...string) *fakeBIRD {
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sock := filepath.Join(t.TempDir(), "sock")
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l, err := net.Listen("unix", sock)
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if err != nil {
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t.Fatal(err)
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}
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pe := make(map[string]bool)
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for _, p := range protocols {
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pe[p] = false
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}
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return &fakeBIRD{
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Listener: l,
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protocolsEnabled: pe,
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sock: sock,
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}
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}
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func (fb *fakeBIRD) listen() error {
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for {
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c, err := fb.Accept()
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if err != nil {
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if errors.Is(err, net.ErrClosed) {
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return nil
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}
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return err
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}
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go fb.handle(c)
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}
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}
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func (fb *fakeBIRD) handle(c net.Conn) {
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fmt.Fprintln(c, "0001 BIRD 2.0.8 ready.")
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sc := bufio.NewScanner(c)
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for sc.Scan() {
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cmd := sc.Text()
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args := strings.Split(cmd, " ")
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switch args[0] {
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case "enable":
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en, ok := fb.protocolsEnabled[args[1]]
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if !ok {
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fmt.Fprintln(c, "9001 syntax error, unexpected CF_SYM_UNDEFINED, expecting CF_SYM_KNOWN or TEXT or ALL")
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} else if en {
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fmt.Fprintf(c, "0010-%s: already enabled\n", args[1])
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} else {
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fmt.Fprintf(c, "0011-%s: enabled\n", args[1])
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}
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fmt.Fprintln(c, "0000 ")
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fb.protocolsEnabled[args[1]] = true
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case "disable":
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en, ok := fb.protocolsEnabled[args[1]]
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if !ok {
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fmt.Fprintln(c, "9001 syntax error, unexpected CF_SYM_UNDEFINED, expecting CF_SYM_KNOWN or TEXT or ALL")
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} else if !en {
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fmt.Fprintf(c, "0008-%s: already disabled\n", args[1])
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} else {
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fmt.Fprintf(c, "0009-%s: disabled\n", args[1])
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}
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fmt.Fprintln(c, "0000 ")
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fb.protocolsEnabled[args[1]] = false
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}
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}
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}
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func TestChirp(t *testing.T) {
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fb := newFakeBIRD(t, "tailscale")
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defer fb.Close()
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go fb.listen()
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c, err := New(fb.sock)
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if err != nil {
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t.Fatal(err)
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}
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if err := c.EnableProtocol("tailscale"); err != nil {
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t.Fatal(err)
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}
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if err := c.EnableProtocol("tailscale"); err != nil {
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t.Fatal(err)
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}
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if err := c.DisableProtocol("tailscale"); err != nil {
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t.Fatal(err)
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}
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if err := c.DisableProtocol("tailscale"); err != nil {
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t.Fatal(err)
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}
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if err := c.EnableProtocol("rando"); err == nil {
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t.Fatalf("enabling %q succeded", "rando")
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}
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if err := c.DisableProtocol("rando"); err == nil {
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t.Fatalf("disabling %q succeded", "rando")
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}
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}
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