529 lines
16 KiB
Go
529 lines
16 KiB
Go
package auth
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/containous/alice"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
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"github.com/traefik/traefik/v3/pkg/config/static"
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tracingMiddleware "github.com/traefik/traefik/v3/pkg/middlewares/tracing"
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"github.com/traefik/traefik/v3/pkg/testhelpers"
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"github.com/traefik/traefik/v3/pkg/tracing"
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"github.com/traefik/traefik/v3/pkg/tracing/opentelemetry"
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"github.com/traefik/traefik/v3/pkg/version"
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"github.com/vulcand/oxy/v2/forward"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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"go.opentelemetry.io/otel/sdk/trace/tracetest"
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semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
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)
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func TestForwardAuthFail(t *testing.T) {
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "traefik")
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})
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set(forward.ProxyAuthenticate, "test")
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http.Error(w, "Forbidden", http.StatusForbidden)
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}))
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t.Cleanup(server.Close)
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middleware, err := NewForward(context.Background(), next, dynamic.ForwardAuth{
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Address: server.URL,
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}, "authTest")
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require.NoError(t, err)
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ts := httptest.NewServer(middleware)
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t.Cleanup(ts.Close)
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req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
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res, err := http.DefaultClient.Do(req)
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require.NoError(t, err)
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assert.Equal(t, http.StatusForbidden, res.StatusCode)
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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err = res.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, "test", res.Header.Get(forward.ProxyAuthenticate))
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assert.Equal(t, "Forbidden\n", string(body))
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}
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func TestForwardAuthSuccess(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("X-Auth-User", "user@example.com")
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w.Header().Set("X-Auth-Secret", "secret")
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w.Header().Add("X-Auth-Group", "group1")
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w.Header().Add("X-Auth-Group", "group2")
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w.Header().Add("Foo-Bar", "auth-value")
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w.Header().Add("Set-Cookie", "authCookie=Auth")
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w.Header().Add("Set-Cookie", "authCookieNotAdded=Auth")
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fmt.Fprintln(w, "Success")
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}))
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t.Cleanup(server.Close)
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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assert.Equal(t, "user@example.com", r.Header.Get("X-Auth-User"))
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assert.Empty(t, r.Header.Get("X-Auth-Secret"))
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assert.Equal(t, []string{"group1", "group2"}, r.Header["X-Auth-Group"])
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assert.Equal(t, "auth-value", r.Header.Get("Foo-Bar"))
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assert.Empty(t, r.Header.Get("Foo-Baz"))
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w.Header().Add("Set-Cookie", "authCookie=Backend")
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w.Header().Add("Set-Cookie", "backendCookie=Backend")
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w.Header().Add("Other-Header", "BackendHeaderValue")
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fmt.Fprintln(w, "traefik")
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})
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auth := dynamic.ForwardAuth{
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Address: server.URL,
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AuthResponseHeaders: []string{"X-Auth-User", "X-Auth-Group"},
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AuthResponseHeadersRegex: "^Foo-",
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AddAuthCookiesToResponse: []string{"authCookie"},
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}
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middleware, err := NewForward(context.Background(), next, auth, "authTest")
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require.NoError(t, err)
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ts := httptest.NewServer(middleware)
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t.Cleanup(ts.Close)
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req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
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req.Header.Set("X-Auth-Group", "admin_group")
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req.Header.Set("Foo-Bar", "client-value")
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req.Header.Set("Foo-Baz", "client-value")
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res, err := http.DefaultClient.Do(req)
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require.NoError(t, err)
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assert.Equal(t, http.StatusOK, res.StatusCode)
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assert.Equal(t, []string{"backendCookie=Backend", "authCookie=Auth"}, res.Header["Set-Cookie"])
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assert.Equal(t, []string{"BackendHeaderValue"}, res.Header["Other-Header"])
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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err = res.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, "traefik\n", string(body))
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}
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func TestForwardAuthRedirect(t *testing.T) {
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authTs := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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http.Redirect(w, r, "http://example.com/redirect-test", http.StatusFound)
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}))
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t.Cleanup(authTs.Close)
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "traefik")
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})
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auth := dynamic.ForwardAuth{Address: authTs.URL}
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authMiddleware, err := NewForward(context.Background(), next, auth, "authTest")
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require.NoError(t, err)
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ts := httptest.NewServer(authMiddleware)
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t.Cleanup(ts.Close)
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client := &http.Client{
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CheckRedirect: func(r *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
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res, err := client.Do(req)
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require.NoError(t, err)
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assert.Equal(t, http.StatusFound, res.StatusCode)
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location, err := res.Location()
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require.NoError(t, err)
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assert.Equal(t, "http://example.com/redirect-test", location.String())
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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err = res.Body.Close()
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require.NoError(t, err)
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assert.NotEmpty(t, string(body))
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}
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func TestForwardAuthRemoveHopByHopHeaders(t *testing.T) {
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authTs := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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headers := w.Header()
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for _, header := range hopHeaders {
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if header == forward.TransferEncoding {
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headers.Set(header, "chunked")
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} else {
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headers.Add(header, "test")
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}
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}
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http.Redirect(w, r, "http://example.com/redirect-test", http.StatusFound)
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}))
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t.Cleanup(authTs.Close)
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "traefik")
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})
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auth := dynamic.ForwardAuth{Address: authTs.URL}
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authMiddleware, err := NewForward(context.Background(), next, auth, "authTest")
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require.NoError(t, err)
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ts := httptest.NewServer(authMiddleware)
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t.Cleanup(ts.Close)
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client := &http.Client{
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CheckRedirect: func(r *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
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res, err := client.Do(req)
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require.NoError(t, err)
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assert.Equal(t, http.StatusFound, res.StatusCode, "they should be equal")
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for _, header := range forward.HopHeaders {
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assert.Equal(t, "", res.Header.Get(header), "hop-by-hop header '%s' mustn't be set", header)
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}
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location, err := res.Location()
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require.NoError(t, err)
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assert.Equal(t, "http://example.com/redirect-test", location.String(), "they should be equal")
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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assert.NotEmpty(t, string(body), "there should be something in the body")
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}
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func TestForwardAuthFailResponseHeaders(t *testing.T) {
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authTs := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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cookie := &http.Cookie{Name: "example", Value: "testing", Path: "/"}
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http.SetCookie(w, cookie)
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w.Header().Add("X-Foo", "bar")
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http.Error(w, "Forbidden", http.StatusForbidden)
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}))
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t.Cleanup(authTs.Close)
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "traefik")
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})
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auth := dynamic.ForwardAuth{
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Address: authTs.URL,
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}
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authMiddleware, err := NewForward(context.Background(), next, auth, "authTest")
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require.NoError(t, err)
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ts := httptest.NewServer(authMiddleware)
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t.Cleanup(ts.Close)
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req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
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res, err := http.DefaultClient.Do(req)
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require.NoError(t, err)
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assert.Equal(t, http.StatusForbidden, res.StatusCode)
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require.Len(t, res.Cookies(), 1)
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for _, cookie := range res.Cookies() {
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assert.Equal(t, "testing", cookie.Value)
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}
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expectedHeaders := http.Header{
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"Content-Length": []string{"10"},
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"Content-Type": []string{"text/plain; charset=utf-8"},
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"X-Foo": []string{"bar"},
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"Set-Cookie": []string{"example=testing; Path=/"},
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"X-Content-Type-Options": []string{"nosniff"},
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}
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assert.Len(t, res.Header, 6)
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for key, value := range expectedHeaders {
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assert.Equal(t, value, res.Header[key])
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}
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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err = res.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, "Forbidden\n", string(body))
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}
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func Test_writeHeader(t *testing.T) {
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testCases := []struct {
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name string
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headers map[string]string
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authRequestHeaders []string
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trustForwardHeader bool
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emptyHost bool
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expectedHeaders map[string]string
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checkForUnexpectedHeaders bool
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}{
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{
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name: "trust Forward Header",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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trustForwardHeader: true,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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},
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{
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name: "not trust Forward Header",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "foo.bar",
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},
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},
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{
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name: "trust Forward Header with empty Host",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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trustForwardHeader: true,
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emptyHost: true,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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},
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{
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name: "not trust Forward Header with empty Host",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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},
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trustForwardHeader: false,
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emptyHost: true,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "",
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},
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},
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{
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name: "trust Forward Header with forwarded URI",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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"X-Forwarded-Uri": "/forward?q=1",
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},
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trustForwardHeader: true,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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"X-Forwarded-Uri": "/forward?q=1",
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},
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},
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{
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name: "not trust Forward Header with forward requested URI",
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headers: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "fii.bir",
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"X-Forwarded-Uri": "/forward?q=1",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"Accept": "application/json",
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"X-Forwarded-Host": "foo.bar",
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"X-Forwarded-Uri": "/path?q=1",
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},
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},
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{
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name: "trust Forward Header with forwarded request Method",
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headers: map[string]string{
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"X-Forwarded-Method": "OPTIONS",
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},
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trustForwardHeader: true,
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expectedHeaders: map[string]string{
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"X-Forwarded-Method": "OPTIONS",
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},
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},
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{
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name: "not trust Forward Header with forward request Method",
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headers: map[string]string{
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"X-Forwarded-Method": "OPTIONS",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"X-Forwarded-Method": "GET",
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},
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},
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{
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name: "remove hop-by-hop headers",
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headers: map[string]string{
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forward.Connection: "Connection",
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forward.KeepAlive: "KeepAlive",
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forward.ProxyAuthenticate: "ProxyAuthenticate",
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forward.ProxyAuthorization: "ProxyAuthorization",
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forward.Te: "Te",
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forward.Trailers: "Trailers",
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forward.TransferEncoding: "TransferEncoding",
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forward.Upgrade: "Upgrade",
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"X-CustomHeader": "CustomHeader",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"X-CustomHeader": "CustomHeader",
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"X-Forwarded-Proto": "http",
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"X-Forwarded-Host": "foo.bar",
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"X-Forwarded-Uri": "/path?q=1",
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"X-Forwarded-Method": "GET",
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forward.ProxyAuthenticate: "ProxyAuthenticate",
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forward.ProxyAuthorization: "ProxyAuthorization",
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},
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checkForUnexpectedHeaders: true,
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},
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{
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name: "filter forward request headers",
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headers: map[string]string{
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"X-CustomHeader": "CustomHeader",
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"Content-Type": "multipart/form-data; boundary=---123456",
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},
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authRequestHeaders: []string{
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"X-CustomHeader",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"x-customHeader": "CustomHeader",
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"X-Forwarded-Proto": "http",
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"X-Forwarded-Host": "foo.bar",
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"X-Forwarded-Uri": "/path?q=1",
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"X-Forwarded-Method": "GET",
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},
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checkForUnexpectedHeaders: true,
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},
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{
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name: "filter forward request headers doesn't add new headers",
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headers: map[string]string{
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"X-CustomHeader": "CustomHeader",
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"Content-Type": "multipart/form-data; boundary=---123456",
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},
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authRequestHeaders: []string{
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"X-CustomHeader",
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"X-Non-Exists-Header",
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},
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trustForwardHeader: false,
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expectedHeaders: map[string]string{
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"X-CustomHeader": "CustomHeader",
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"X-Forwarded-Proto": "http",
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"X-Forwarded-Host": "foo.bar",
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"X-Forwarded-Uri": "/path?q=1",
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"X-Forwarded-Method": "GET",
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},
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checkForUnexpectedHeaders: true,
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},
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}
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for _, test := range testCases {
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t.Run(test.name, func(t *testing.T) {
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req := testhelpers.MustNewRequest(http.MethodGet, "http://foo.bar/path?q=1", nil)
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for key, value := range test.headers {
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req.Header.Set(key, value)
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}
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if test.emptyHost {
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req.Host = ""
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}
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forwardReq := testhelpers.MustNewRequest(http.MethodGet, "http://foo.bar/path?q=1", nil)
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writeHeader(req, forwardReq, test.trustForwardHeader, test.authRequestHeaders)
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actualHeaders := forwardReq.Header
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expectedHeaders := test.expectedHeaders
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for key, value := range expectedHeaders {
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assert.Equal(t, value, actualHeaders.Get(key))
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actualHeaders.Del(key)
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}
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if test.checkForUnexpectedHeaders {
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for key := range actualHeaders {
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assert.Fail(t, "Unexpected header found", key)
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}
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}
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})
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}
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}
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func TestForwardAuthUsesTracing(t *testing.T) {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Header.Get("Traceparent") == "" {
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t.Errorf("expected Traceparent header to be present in request")
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}
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}))
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t.Cleanup(server.Close)
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next := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
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auth := dynamic.ForwardAuth{
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Address: server.URL,
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}
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exporter := tracetest.NewInMemoryExporter()
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tres, err := resource.New(context.Background(),
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resource.WithAttributes(semconv.ServiceNameKey.String("traefik")),
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resource.WithAttributes(semconv.ServiceVersionKey.String(version.Version)),
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resource.WithFromEnv(),
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resource.WithTelemetrySDK(),
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)
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require.NoError(t, err)
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tracerProvider := sdktrace.NewTracerProvider(
|
|
sdktrace.WithSampler(sdktrace.AlwaysSample()),
|
|
sdktrace.WithResource(tres),
|
|
sdktrace.WithBatcher(exporter),
|
|
)
|
|
otel.SetTracerProvider(tracerProvider)
|
|
|
|
config := &static.Tracing{
|
|
ServiceName: "testApp",
|
|
SampleRate: 1,
|
|
OTLP: &opentelemetry.Config{
|
|
HTTP: &opentelemetry.HTTP{
|
|
Endpoint: "http://127.0.0.1:8080",
|
|
},
|
|
},
|
|
}
|
|
tr, closer, err := tracing.NewTracing(config)
|
|
require.NoError(t, err)
|
|
t.Cleanup(func() {
|
|
_ = closer.Close()
|
|
})
|
|
|
|
next, err = NewForward(context.Background(), next, auth, "authTest")
|
|
require.NoError(t, err)
|
|
|
|
chain := alice.New(tracingMiddleware.WrapEntryPointHandler(context.Background(), tr, "tracingTest"))
|
|
next, err = chain.Then(next)
|
|
require.NoError(t, err)
|
|
|
|
ts := httptest.NewServer(next)
|
|
t.Cleanup(ts.Close)
|
|
|
|
req := testhelpers.MustNewRequest(http.MethodGet, ts.URL, nil)
|
|
res, err := http.DefaultClient.Do(req)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, http.StatusOK, res.StatusCode)
|
|
}
|