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integration_oidc_test.go
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integration_oidc_test.go
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//go:build integration_oidc
package headscale
import (
"bytes"
"context"
"crypto/tls"
"fmt"
"io"
"log"
"net"
"net/http"
"net/url"
"os"
"path"
"strings"
"sync"
"testing"
"time"
"github.com/oauth2-proxy/mockoidc"
"github.com/ory/dockertest/v3"
"github.com/ory/dockertest/v3/docker"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/suite"
)
const (
oidcHeadscaleHostname = "headscale"
oidcNamespaceName = "oidcnamespace"
totalOidcContainers = 3
)
type IntegrationOIDCTestSuite struct {
suite.Suite
stats *suite.SuiteInformation
oidc *mockoidc.MockOIDC
pool dockertest.Pool
network dockertest.Network
headscale dockertest.Resource
saveLogs bool
tailscales map[string]dockertest.Resource
joinWaitGroup sync.WaitGroup
}
func TestOIDCIntegrationTestSuite(t *testing.T) {
saveLogs, err := GetEnvBool("HEADSCALE_INTEGRATION_SAVE_LOG")
if err != nil {
saveLogs = false
}
s := new(IntegrationOIDCTestSuite)
s.tailscales = make(map[string]dockertest.Resource)
s.saveLogs = saveLogs
suite.Run(t, s)
// HandleStats, which allows us to check if we passed and save logs
// is called after TearDown, so we cannot tear down containers before
// we have potentially saved the logs.
if s.saveLogs {
for _, tailscale := range s.tailscales {
if err := s.pool.Purge(&tailscale); err != nil {
log.Printf("Could not purge resource: %s\n", err)
}
}
if !s.stats.Passed() {
err := s.saveLog(&s.headscale, "test_output")
if err != nil {
log.Printf("Could not save log: %s\n", err)
}
}
if err := s.pool.Purge(&s.headscale); err != nil {
t.Logf("Could not purge resource: %s\n", err)
}
if err := s.network.Close(); err != nil {
log.Printf("Could not close network: %s\n", err)
}
}
}
func (s *IntegrationOIDCTestSuite) SetupSuite() {
if ppool, err := dockertest.NewPool(""); err == nil {
s.pool = *ppool
} else {
s.FailNow(fmt.Sprintf("Could not connect to docker: %s", err), "")
}
if pnetwork, err := s.pool.CreateNetwork("headscale-test"); err == nil {
s.network = *pnetwork
} else {
s.FailNow(fmt.Sprintf("Could not create network: %s", err), "")
}
// Create does not give us an updated version of the resource, so we need to
// get it again.
networks, err := s.pool.NetworksByName("headscale-test")
if err != nil {
s.FailNow(fmt.Sprintf("Could not get network: %s", err), "")
}
s.network = networks[0]
s.Suite.T().Log("Setting up mock OIDC")
oidc, _ := mockoidc.NewServer(nil)
ln, _ := net.Listen("tcp", fmt.Sprintf("%s:0", s.network.Network.IPAM.Config[0].Gateway))
oidc.Start(ln, nil)
s.oidc = oidc
// we now parse the Issuer URL and replace the host with the docker internal hostname
// urlIssuer, _ := url.Parse(s.oidc.Issuer())
// urlIssuer.Host = fmt.Sprintf("host-gateway:%s", urlIssuer.Port())
// issuer := urlIssuer.String()
oidcCfg := fmt.Sprintf(`
oidc:
issuer: %s
client_id: %s
client_secret: %s
strip_email_domain: true`,
s.oidc.Issuer(),
s.oidc.Config().ClientID,
s.oidc.Config().ClientSecret)
fmt.Println(oidcCfg)
headscaleBuildOptions := &dockertest.BuildOptions{
Dockerfile: "Dockerfile.debug",
ContextDir: ".",
}
currentPath, err := os.Getwd()
if err != nil {
s.FailNow(fmt.Sprintf("Could not determine current path: %s", err), "")
}
baseConfig, _ := os.ReadFile("integration_test/etc_oidc/base_config.yaml")
config := string(baseConfig) + oidcCfg
configPath := path.Join(currentPath, "integration_test/etc_oidc/config.yaml")
err = os.WriteFile(configPath, []byte(config), 0644)
headscaleOptions := &dockertest.RunOptions{
Name: oidcHeadscaleHostname,
Mounts: []string{
fmt.Sprintf(
"%s/integration_test/etc_oidc:/etc/headscale",
currentPath,
),
},
Cmd: []string{"headscale", "serve"},
ExposedPorts: []string{"8443/tcp", "3478/udp"},
PortBindings: map[docker.Port][]docker.PortBinding{
"8443/tcp": {{HostPort: "8443"}},
"3478/udp": {{HostPort: "3478"}},
},
}
err = s.pool.RemoveContainerByName(oidcHeadscaleHostname)
if err != nil {
s.FailNow(
fmt.Sprintf(
"Could not remove existing container before building test: %s",
err,
),
"",
)
}
s.Suite.T().Logf("Creating headscale container for OIDC integration tests")
if pheadscale, err := s.pool.BuildAndRunWithBuildOptions(headscaleBuildOptions, headscaleOptions, DockerRestartPolicy); err == nil {
s.headscale = *pheadscale
} else {
s.FailNow(fmt.Sprintf("Could not start headscale container: %s", err), "")
}
s.Suite.T().Logf("Created headscale container for embedded OIDC tests")
s.Suite.T().Logf("Creating tailscale containers for embedded OIDC tests")
for i := 0; i < totalOidcContainers; i++ {
version := tailscaleVersions[i%len(tailscaleVersions)]
hostname, container := s.tailscaleContainer(
fmt.Sprint(i),
version,
)
s.tailscales[hostname] = *container
}
s.Suite.T().Logf("Waiting for headscale to be ready for embedded OIDC tests")
hostEndpoint := fmt.Sprintf("localhost:%s", s.headscale.GetPort("8443/tcp"))
if err := s.pool.Retry(func() error {
url := fmt.Sprintf("https://%s/health", hostEndpoint)
insecureTransport := http.DefaultTransport.(*http.Transport).Clone()
insecureTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
client := &http.Client{Transport: insecureTransport}
resp, err := client.Get(url)
if err != nil {
fmt.Printf("headscale for embedded OIDC tests is not ready: %s\n", err)
return err
}
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("status code not OK")
}
return nil
}); err != nil {
// TODO(kradalby): If we cannot access headscale, or any other fatal error during
// test setup, we need to abort and tear down. However, testify does not seem to
// support that at the moment:
// https://github.com/stretchr/testify/issues/849
return // fmt.Errorf("Could not connect to headscale: %s", err)
}
s.Suite.T().Log("headscale container is ready for embedded OIDC tests")
s.Suite.T().Logf("Creating headscale namespace: %s\n", oidcNamespaceName)
result, err := ExecuteCommand(
&s.headscale,
[]string{"headscale", "namespaces", "create", oidcNamespaceName},
[]string{},
)
log.Println("headscale create namespace result: ", result)
assert.Nil(s.T(), err)
headscaleEndpoint := fmt.Sprintf(
"https://headscale:%s",
s.headscale.GetPort("8443/tcp"),
)
log.Printf(
"Joining tailscale containers to headscale at %s\n",
headscaleEndpoint,
)
for hostname, tailscale := range s.tailscales {
s.joinWaitGroup.Add(1)
go s.AuthenticateOIDC(headscaleEndpoint, hostname, tailscale)
}
s.joinWaitGroup.Wait()
// The nodes need a bit of time to get their updated maps from headscale
// TODO: See if we can have a more deterministic wait here.
time.Sleep(60 * time.Second)
}
func (s *IntegrationOIDCTestSuite) AuthenticateOIDC(
endpoint, hostname string,
tailscale dockertest.Resource,
) {
defer s.joinWaitGroup.Done()
loginURL, err := s.joinOIDC(endpoint, hostname, tailscale)
if err != nil {
s.FailNow(fmt.Sprintf("Could not join OIDC node: %s", err), "")
}
insecureTransport := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: insecureTransport}
resp, err := client.Get(loginURL.String())
if err != nil {
s.FailNow(fmt.Sprintf("Could not get login page: %s", err), "")
}
// read the body
body, err := io.ReadAll(resp.Body)
if err != nil {
s.FailNow(fmt.Sprintf("Could not read login page: %s", err), "")
}
panic(string(body))
}
func (s *IntegrationOIDCTestSuite) joinOIDC(
endpoint, hostname string,
tailscale dockertest.Resource,
) (*url.URL, error) {
command := []string{
"tailscale",
"up",
"-login-server",
endpoint,
"--hostname",
hostname,
}
log.Println("Join command:", command)
log.Printf("Running join command for %s\n", hostname)
result, _ := ExecuteCommand(
&tailscale,
command,
[]string{},
)
// This piece of code just gets the login URL out of the output of the tailscale client.
// See https://github.com/tailscale/tailscale/blob/main/cmd/tailscale/cli/up.go#L584.
urlStr := strings.ReplaceAll(result, "\nTo authenticate, visit:\n\n\t", "")
urlStr = strings.TrimSpace(urlStr)
// parse URL
loginUrl, err := url.Parse(urlStr)
if err != nil {
log.Printf("Could not parse login URL: %s", err)
log.Printf("Original join command result: %s", result)
return nil, err
}
return loginUrl, nil
}
func (s *IntegrationOIDCTestSuite) tailscaleContainer(
identifier, version string,
) (string, *dockertest.Resource) {
tailscaleBuildOptions := getDockerBuildOptions(version)
hostname := fmt.Sprintf(
"tailscale-%s-%s",
strings.Replace(version, ".", "-", -1),
identifier,
)
tailscaleOptions := &dockertest.RunOptions{
Name: hostname,
Networks: []*dockertest.Network{&s.network},
Cmd: []string{
"tailscaled", "--tun=tsdev",
},
// expose the host IP address, so we can access it from inside the container
ExtraHosts: []string{
"host.docker.internal:host-gateway",
"headscale:host-gateway",
},
}
pts, err := s.pool.BuildAndRunWithBuildOptions(
tailscaleBuildOptions,
tailscaleOptions,
DockerRestartPolicy,
DockerAllowLocalIPv6,
DockerAllowNetworkAdministration,
)
if err != nil {
log.Fatalf("Could not start tailscale container version %s: %s", version, err)
}
log.Printf("Created %s container\n", hostname)
return hostname, pts
}
func (s *IntegrationOIDCTestSuite) TearDownSuite() {
s.oidc.Shutdown()
if !s.saveLogs {
for _, tailscale := range s.tailscales {
if err := s.pool.Purge(&tailscale); err != nil {
log.Printf("Could not purge resource: %s\n", err)
}
}
if err := s.pool.Purge(&s.headscale); err != nil {
log.Printf("Could not purge resource: %s\n", err)
}
if err := s.network.Close(); err != nil {
log.Printf("Could not close network: %s\n", err)
}
}
}
func (s *IntegrationOIDCTestSuite) HandleStats(
suiteName string,
stats *suite.SuiteInformation,
) {
s.stats = stats
}
func (s *IntegrationOIDCTestSuite) saveLog(
resource *dockertest.Resource,
basePath string,
) error {
err := os.MkdirAll(basePath, os.ModePerm)
if err != nil {
return err
}
var stdout bytes.Buffer
var stderr bytes.Buffer
err = s.pool.Client.Logs(
docker.LogsOptions{
Context: context.TODO(),
Container: resource.Container.ID,
OutputStream: &stdout,
ErrorStream: &stderr,
Tail: "all",
RawTerminal: false,
Stdout: true,
Stderr: true,
Follow: false,
Timestamps: false,
},
)
if err != nil {
return err
}
log.Printf("Saving logs for %s to %s\n", resource.Container.Name, basePath)
err = os.WriteFile(
path.Join(basePath, resource.Container.Name+".stdout.log"),
[]byte(stdout.String()),
0o644,
)
if err != nil {
return err
}
err = os.WriteFile(
path.Join(basePath, resource.Container.Name+".stderr.log"),
[]byte(stdout.String()),
0o644,
)
if err != nil {
return err
}
return nil
}
func (s *IntegrationOIDCTestSuite) TestPingAllPeersByHostname() {
hostnames, err := getDNSNames(&s.headscale)
assert.Nil(s.T(), err)
log.Printf("Hostnames: %#v\n", hostnames)
for hostname, tailscale := range s.tailscales {
for _, peername := range hostnames {
if strings.Contains(peername, hostname) {
continue
}
s.T().Run(fmt.Sprintf("%s-%s", hostname, peername), func(t *testing.T) {
command := []string{
"tailscale", "ping",
"--timeout=10s",
"--c=5",
"--until-direct=false",
peername,
}
log.Printf(
"Pinging using hostname from %s to %s\n",
hostname,
peername,
)
log.Println(command)
result, err := ExecuteCommand(
&tailscale,
command,
[]string{},
)
assert.Nil(t, err)
log.Printf("Result for %s: %s\n", hostname, result)
assert.Contains(t, result, "via DERP(headscale)")
})
}
}
}