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Ensure Authorization header is set for bearer_token authenticator
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TamerShlash committed Oct 4, 2024
1 parent 361177a commit cb8d3b3
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Showing 3 changed files with 62 additions and 5 deletions.
4 changes: 2 additions & 2 deletions middleware/grpc_middleware_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ func testClient(t *testing.T, l *bufconn.Listener, dialOpts ...grpc.DialOption)
func testTokenCheckServer(t *testing.T) *httptest.Server {
s := httptest.NewServer(http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
if r.Header.Get("authorization") != "Bearer correct token" {
if r.Header.Get("Authorization") != "bearer correct token" {
t.Logf("denied request %+v", r)
w.WriteHeader(http.StatusForbidden)
return
Expand All @@ -77,7 +77,7 @@ func writeTestConfig(t *testing.T, pattern string, content string) string {
type testToken string

func (t testToken) GetRequestMetadata(context.Context, ...string) (map[string]string, error) {
return map[string]string{"authorization": "Bearer " + string(t)}, nil
return map[string]string{"Authorization": "bearer " + string(t)}, nil
}
func (t testToken) RequireTransportSecurity() bool { return false }

Expand Down
5 changes: 5 additions & 0 deletions pipeline/authn/authenticator_bearer_token.go
Original file line number Diff line number Diff line change
Expand Up @@ -141,6 +141,11 @@ func (a *AuthenticatorBearerToken) Authenticate(r *http.Request, session *Authen
return errors.WithStack(ErrAuthenticatorNotResponsible)
}

if r.Header == nil {
r.Header = make(http.Header)
}
r.Header.Set("Authorization", "bearer "+token)

body, err := forwardRequestToSessionStore(a.client, r, cf)
if err != nil {
return err
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58 changes: 55 additions & 3 deletions pipeline/authn/authenticator_bearer_token_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ func TestAuthenticatorBearerToken(t *testing.T) {
t.Run("method=authenticate", func(t *testing.T) {
for k, tc := range []struct {
d string
token string
r *http.Request
setup func(*testing.T, *httprouter.Router)
router func(http.ResponseWriter, *http.Request)
Expand Down Expand Up @@ -96,6 +97,54 @@ func TestAuthenticatorBearerToken(t *testing.T) {
Extra: map[string]interface{}{"foo": "bar"},
},
},
{
d: "should pass because session token was provided in the correct custom header",
token: "custom-header-token-value",
r: &http.Request{Header: http.Header{"X-Custom-Header": {"custom-header-token-value"}}, URL: &url.URL{Path: ""}},
router: func(w http.ResponseWriter, r *http.Request) {
assert.Equal(t, r.Header.Get("Authorization"), "bearer custom-header-token-value")
w.WriteHeader(200)
w.Write([]byte(`{"sub": "123", "extra": {"foo": "bar"}}`))
},
config: []byte(`{"token_from": {"header": "X-Custom-Header"}}`),
expectErr: false,
expectSess: &AuthenticationSession{
Subject: "123",
Extra: map[string]interface{}{"foo": "bar"},
},
},
{
d: "should pass because session token was provided in the correct custom query parameter",
token: "query-param-token-value",
r: &http.Request{Header: http.Header{}, URL: &url.URL{Path: "", RawQuery: "custom-query-param=query-param-token-value"}},
router: func(w http.ResponseWriter, r *http.Request) {
assert.Equal(t, r.Header.Get("Authorization"), "bearer query-param-token-value")
w.WriteHeader(200)
w.Write([]byte(`{"sub": "123", "extra": {"foo": "bar"}}`))
},
config: []byte(`{"token_from": {"query_parameter": "custom-query-param"}}`),
expectErr: false,
expectSess: &AuthenticationSession{
Subject: "123",
Extra: map[string]interface{}{"foo": "bar"},
},
},
{
d: "should pass because session token was provided in the correct cookie",
token: "cooke-token-value",
r: &http.Request{Header: http.Header{"Cookie": {"custom-cookie-name=cooke-token-value"}}, URL: &url.URL{Path: ""}},
router: func(w http.ResponseWriter, r *http.Request) {
assert.Equal(t, r.Header.Get("Authorization"), "bearer cooke-token-value")
w.WriteHeader(200)
w.Write([]byte(`{"sub": "123", "extra": {"foo": "bar"}}`))
},
config: []byte(`{"token_from": {"cookie": "custom-cookie-name"}}`),
expectErr: false,
expectSess: &AuthenticationSession{
Subject: "123",
Extra: map[string]interface{}{"foo": "bar"},
},
},
{
d: "should pass through method, path, and headers to auth server; should NOT pass through query parameters by default for backwards compatibility",
r: &http.Request{Header: http.Header{"Authorization": {"bearer zyx"}}, URL: &url.URL{Path: "/users/123", RawQuery: "query=string"}, Method: "PUT"},
Expand Down Expand Up @@ -308,9 +357,12 @@ func TestAuthenticatorBearerToken(t *testing.T) {

tc.config, _ = sjson.SetBytes(tc.config, "check_session_url", testCheckSessionUrl.String())
sess := new(AuthenticationSession)
originalHeaders := http.Header{}
expectedHeaders := http.Header{}
for k, v := range tc.r.Header {
originalHeaders[k] = v
expectedHeaders[k] = v
}
if tc.token != "" {
expectedHeaders.Set("Authorization", "bearer "+tc.token)
}

err = pipelineAuthenticator.Authenticate(tc.r, sess, tc.config, nil)
Expand All @@ -323,7 +375,7 @@ func TestAuthenticatorBearerToken(t *testing.T) {
require.NoError(t, err)
}

require.True(t, reflect.DeepEqual(tc.r.Header, originalHeaders))
require.True(t, reflect.DeepEqual(tc.r.Header, expectedHeaders))

if tc.expectSess != nil {
assert.Equal(t, tc.expectSess, sess)
Expand Down

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