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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package main
import (
"bytes"
"context"
"net/http"
"net/http/httptest"
"strings"
"testing"
"tailscale.com/derp/derpserver"
"tailscale.com/tstest/deptest"
)
func TestProdAutocertHostPolicy(t *testing.T) {
tests := []struct {
in string
wantOK bool
}{
{"derp.tailscale.com", true},
{"derp.tailscale.com.", true},
{"derp1.tailscale.com", true},
{"derp1b.tailscale.com", true},
{"derp2.tailscale.com", true},
{"derp02.tailscale.com", true},
{"derp-nyc.tailscale.com", true},
{"derpfoo.tailscale.com", true},
{"derp02.bar.tailscale.com", false},
{"example.net", false},
}
for _, tt := range tests {
got := prodAutocertHostPolicy(context.Background(), tt.in) == nil
if got != tt.wantOK {
t.Errorf("f(%q) = %v; want %v", tt.in, got, tt.wantOK)
}
}
}
func TestNoContent(t *testing.T) {
testCases := []struct {
name string
input string
want string
}{
{
name: "no challenge",
},
{
name: "valid challenge",
input: "input",
want: "response input",
},
{
name: "valid challenge hostname",
input: "ts_derp99b.tailscale.com",
want: "response ts_derp99b.tailscale.com",
},
{
name: "invalid challenge",
input: "foo\x00bar",
want: "",
},
{
name: "whitespace invalid challenge",
input: "foo bar",
want: "",
},
{
name: "long challenge",
input: strings.Repeat("x", 65),
want: "",
},
}
for _, tt := range testCases {
t.Run(tt.name, func(t *testing.T) {
req, _ := http.NewRequest("GET", "https://localhost/generate_204", nil)
if tt.input != "" {
req.Header.Set(derpserver.NoContentChallengeHeader, tt.input)
}
w := httptest.NewRecorder()
derpserver.ServeNoContent(w, req)
resp := w.Result()
if tt.want == "" {
if h, found := resp.Header[derpserver.NoContentResponseHeader]; found {
t.Errorf("got %+v; expected no response header", h)
}
return
}
if got := resp.Header.Get(derpserver.NoContentResponseHeader); got != tt.want {
t.Errorf("got %q; want %q", got, tt.want)
}
})
}
}
func TestDeps(t *testing.T) {
deptest.DepChecker{
BadDeps: map[string]string{
"testing": "do not use testing package in production code",
"gvisor.dev/gvisor/pkg/buffer": "https://github.com/tailscale/tailscale/issues/9756",
"gvisor.dev/gvisor/pkg/cpuid": "https://github.com/tailscale/tailscale/issues/9756",
"gvisor.dev/gvisor/pkg/tcpip": "https://github.com/tailscale/tailscale/issues/9756",
"gvisor.dev/gvisor/pkg/tcpip/header": "https://github.com/tailscale/tailscale/issues/9756",
"tailscale.com/net/packet": "not needed in derper",
"github.com/gaissmai/bart": "not needed in derper",
"database/sql/driver": "not needed in derper", // previously came in via github.com/google/uuid
},
}.Check(t)
}
func TestTemplate(t *testing.T) {
buf := &bytes.Buffer{}
err := homePageTemplate.Execute(buf, templateData{
ShowAbuseInfo: true,
Disabled: true,
AllowDebug: true,
})
if err != nil {
t.Fatal(err)
}
str := buf.String()
if !strings.Contains(str, "If you suspect abuse") {
t.Error("Output is missing abuse mailto")
}
if !strings.Contains(str, "Tailscale Security Policies") {
t.Error("Output is missing Tailscale Security Policies link")
}
if !strings.Contains(str, "Status:") {
t.Error("Output is missing disabled status")
}
if !strings.Contains(str, "Debug info") {
t.Error("Output is missing debug info")
}
}
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