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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package tshttpproxy
import (
"net/http"
"net/url"
"os"
"runtime"
"strings"
"testing"
"time"
"tailscale.com/util/must"
)
func TestGetAuthHeaderNoResult(t *testing.T) {
const proxyURL = "http://127.0.0.1:38274"
u, err := url.Parse(proxyURL)
if err != nil {
t.Fatalf("can't parse %q: %v", proxyURL, err)
}
got, err := GetAuthHeader(u)
if err != nil {
t.Fatalf("can't get auth header value: %v", err)
}
if runtime.GOOS == "windows" && strings.HasPrefix(got, "Negotiate") {
t.Logf("didn't get empty result, but got acceptable Windows Negotiate header")
return
}
if got != "" {
t.Fatalf("GetAuthHeader(%q) = %q; want empty string", proxyURL, got)
}
}
func TestGetAuthHeaderBasicAuth(t *testing.T) {
const proxyURL = "http://user:password@127.0.0.1:38274"
const want = "Basic dXNlcjpwYXNzd29yZA=="
u, err := url.Parse(proxyURL)
if err != nil {
t.Fatalf("can't parse %q: %v", proxyURL, err)
}
got, err := GetAuthHeader(u)
if err != nil {
t.Fatalf("can't get auth header value: %v", err)
}
if got != want {
t.Fatalf("GetAuthHeader(%q) = %q; want %q", proxyURL, got, want)
}
}
func TestProxyFromEnvironment_setNoProxyUntil(t *testing.T) {
const fakeProxyEnv = "10.1.2.3:456"
const fakeProxyFull = "http://" + fakeProxyEnv
defer os.Setenv("HTTPS_PROXY", os.Getenv("HTTPS_PROXY"))
os.Setenv("HTTPS_PROXY", fakeProxyEnv)
req := &http.Request{URL: must.Get(url.Parse("https://example.com/"))}
for i := range 3 {
switch i {
case 1:
setNoProxyUntil(time.Minute)
case 2:
setNoProxyUntil(0)
}
got, err := ProxyFromEnvironment(req)
if err != nil {
t.Fatalf("[%d] ProxyFromEnvironment: %v", i, err)
}
if got == nil || got.String() != fakeProxyFull {
t.Errorf("[%d] Got proxy %v; want %v", i, got, fakeProxyFull)
}
}
}
func TestSetSelfProxy(t *testing.T) {
// Ensure we clean everything up at the end of our test
t.Cleanup(func() {
config = nil
proxyFunc = nil
})
testCases := []struct {
name string
env map[string]string
self []string
wantHTTP string
wantHTTPS string
}{
{
name: "no self proxy",
env: map[string]string{
"HTTP_PROXY": "127.0.0.1:1234",
"HTTPS_PROXY": "127.0.0.1:1234",
},
self: nil,
wantHTTP: "127.0.0.1:1234",
wantHTTPS: "127.0.0.1:1234",
},
{
name: "skip proxies",
env: map[string]string{
"HTTP_PROXY": "127.0.0.1:1234",
"HTTPS_PROXY": "127.0.0.1:5678",
},
self: []string{"127.0.0.1:1234", "127.0.0.1:5678"},
wantHTTP: "", // skipped
wantHTTPS: "", // skipped
},
{
name: "localhost normalization of env var",
env: map[string]string{
"HTTP_PROXY": "localhost:1234",
"HTTPS_PROXY": "[::1]:5678",
},
self: []string{"127.0.0.1:1234", "127.0.0.1:5678"},
wantHTTP: "", // skipped
wantHTTPS: "", // skipped
},
{
name: "localhost normalization of addr",
env: map[string]string{
"HTTP_PROXY": "127.0.0.1:1234",
"HTTPS_PROXY": "127.0.0.1:1234",
},
self: []string{"[::1]:1234"},
wantHTTP: "", // skipped
wantHTTPS: "", // skipped
},
{
name: "no ports",
env: map[string]string{
"HTTP_PROXY": "myproxy",
"HTTPS_PROXY": "myproxy",
},
self: []string{"127.0.0.1:1234"},
wantHTTP: "myproxy",
wantHTTPS: "myproxy",
},
}
for _, tt := range testCases {
t.Run(tt.name, func(t *testing.T) {
for k, v := range tt.env {
oldEnv, found := os.LookupEnv(k)
if found {
t.Cleanup(func() {
os.Setenv(k, oldEnv)
})
}
os.Setenv(k, v)
}
// Reset computed variables
config = nil
proxyFunc = func(*url.URL) (*url.URL, error) {
panic("should not be called")
}
SetSelfProxy(tt.self...)
if got := config.HTTPProxy; got != tt.wantHTTP {
t.Errorf("got HTTPProxy=%q; want %q", got, tt.wantHTTP)
}
if got := config.HTTPSProxy; got != tt.wantHTTPS {
t.Errorf("got HTTPSProxy=%q; want %q", got, tt.wantHTTPS)
}
if proxyFunc != nil {
t.Errorf("wanted nil proxyFunc")
}
// Verify that we do actually proxy through the
// expected proxy, if we have one configured.
pf := getProxyFunc()
if tt.wantHTTP != "" {
want := "http://" + tt.wantHTTP
uu, _ := url.Parse("http://tailscale.com")
dest, err := pf(uu)
if err != nil {
t.Error(err)
} else if dest.String() != want {
t.Errorf("got dest=%q; want %q", dest, want)
}
}
if tt.wantHTTPS != "" {
want := "http://" + tt.wantHTTPS
uu, _ := url.Parse("https://tailscale.com")
dest, err := pf(uu)
if err != nil {
t.Error(err)
} else if dest.String() != want {
t.Errorf("got dest=%q; want %q", dest, want)
}
}
})
}
}
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