ContainerImage.Pinniped/internal/upstreamoidc/upstreamoidc_test.go

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// Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package upstreamoidc
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/http/httptest"
"reflect"
"testing"
"time"
"unsafe"
"github.com/coreos/go-oidc/v3/oidc"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/require"
"golang.org/x/oauth2"
"gopkg.in/square/go-jose.v2"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"go.pinniped.dev/internal/mocks/mockkeyset"
"go.pinniped.dev/pkg/oidcclient/nonce"
"go.pinniped.dev/pkg/oidcclient/oidctypes"
)
func TestProviderConfig(t *testing.T) {
t.Run("getters get", func(t *testing.T) {
p := ProviderConfig{
Name: "test-name",
UsernameClaim: "test-username-claim",
GroupsClaim: "test-groups-claim",
Config: &oauth2.Config{
ClientID: "test-client-id",
Endpoint: oauth2.Endpoint{AuthURL: "https://example.com"},
Scopes: []string{"scope1", "scope2"},
},
}
require.Equal(t, "test-name", p.GetName())
require.Equal(t, "test-client-id", p.GetClientID())
require.Equal(t, "https://example.com", p.GetAuthorizationURL().String())
require.ElementsMatch(t, []string{"scope1", "scope2"}, p.GetScopes())
require.Equal(t, "test-username-claim", p.GetUsernameClaim())
require.Equal(t, "test-groups-claim", p.GetGroupsClaim())
// AllowPasswordGrant defaults to false.
require.False(t, p.AllowsPasswordGrant())
p.AllowPasswordGrant = true
require.True(t, p.AllowsPasswordGrant())
p.AllowPasswordGrant = false
require.False(t, p.AllowsPasswordGrant())
})
const (
// Test JWTs generated with https://smallstep.com/docs/cli/crypto/jwt/:
// step crypto keypair key.pub key.priv --kty RSA --no-password --insecure --force && echo '{"at_hash": "invalid-at-hash"}' | step crypto jwt sign --key key.priv --aud test-client-id --sub test-user --subtle --kid="test-kid" --jti="test-jti"
invalidAccessTokenHashIDToken = "eyJhbGciOiJSUzI1NiIsImtpZCI6InRlc3Qta2lkIiwidHlwIjoiSldUIn0.eyJhdF9oYXNoIjoiaW52YWxpZC1hdC1oYXNoIiwiYXVkIjoidGVzdC1jbGllbnQtaWQiLCJpYXQiOjE2MDIyODM3OTEsImp0aSI6InRlc3QtanRpIiwibmJmIjoxNjAyMjgzNzkxLCJzdWIiOiJ0ZXN0LXVzZXIifQ.jryXr4jiwcf79wBLaHpjdclEYHoUFGhvTu95QyA6Hnk9NQ0x1vsWYurtj7a8uKydNPryC_HNZi9QTAE_tRIJjycseog3695-5y4B4EZlqL-a94rdOtffuF2O_lnPbKvoja9EKNrp0kLBCftFRHhLAEwuP0N9E5padZwPpIGK0yE_JqljnYgCySvzsQu7tasR38yaULny13h3mtp2WRHPG5DrLyuBuF8Z01hSgRi5hGcVpgzTwBgV5-eMaSUCUo-ZDkqUsLQI6dVlaikCSKYZRb53HeexH0tB_R9PJJHY7mIr-rS76kkQEx9pLuVnheIH9Oc6zbdYWg-zWMijopA8Pg" //nolint: gosec
// step crypto keypair key.pub key.priv --kty RSA --no-password --insecure --force && echo '{"nonce": "invalid-nonce"}' | step crypto jwt sign --key key.priv --aud test-client-id --sub test-user --subtle --kid="test-kid" --jti="test-jti"
invalidNonceIDToken = "eyJhbGciOiJSUzI1NiIsImtpZCI6InRlc3Qta2lkIiwidHlwIjoiSldUIn0.eyJhdWQiOiJ0ZXN0LWNsaWVudC1pZCIsImlhdCI6MTYwMjI4Mzc0MSwianRpIjoidGVzdC1qdGkiLCJuYmYiOjE2MDIyODM3NDEsIm5vbmNlIjoiaW52YWxpZC1ub25jZSIsInN1YiI6InRlc3QtdXNlciJ9.PRpq-7j5djaIAkraL-8t8ad9Xm4hM8RW67gyD1VIe0BecWeBFxsTuh3SZVKM9zmcwTgjudsyn8kQOwipDa49IN4PV8FcJA_uUJZi2wiqGJUSTG2K5I89doV_7e0RM1ZYIDDW1G2heKJNW7MbKkX7iEPr7u4MyEzswcPcupbyDA-CQFeL95vgwawoqa6yO94ympTbozqiNfj6Xyw_nHtThQnstjWsJZ9s2mUgppZezZv4HZYTQ7c3e_bzwhWgCzh2CSDJn9_Ra_n_4GcVkpHbsHTP35dFsnf0vactPx6CAu6A1-Apk-BruCktpZ3B4Ercf1UnUOHdGqzQKJtqvB03xQ" //nolint: gosec
// step crypto keypair key.pub key.priv --kty RSA --no-password --insecure --force && echo '{"foo": "bar", "bat": "baz"}' | step crypto jwt sign --key key.priv --aud test-client-id --sub '' --subtle --kid="test-kid" --jti="test-jti"
invalidSubClaim = "eyJhbGciOiJSUzI1NiIsImtpZCI6InRlc3Qta2lkIiwidHlwIjoiSldUIn0.eyJhdWQiOiJ0ZXN0LWNsaWVudC1pZCIsImJhdCI6ImJheiIsImZvbyI6ImJhciIsImlhdCI6MTYxMDIxOTY5MCwianRpIjoidGVzdC1qdGkiLCJuYmYiOjE2MTAyMTk2OTB9.CXgUarh9A8QByF_ddw0W1Cldl_n1qmry2cZh9U0Avi5sl7hb1y22MadDLQslvnx0NKx6EdbwI-El7QxDy0SzwomJomFL7WNd5gGk-Ilq9O_emaHekbpphZ5kxyudsAGUYGxrg1zysv1k5JPhnLnOUMcE7wa0uPLDWnrlAMzqHvnbjI3lakZ8v4-dfAKUIUGi3ycwuAh9BdpydwAsSNOpGBM55-O8911dqVfZKiFNNUeHYE1qlnbhCz7_ykLrljao0nRBbEf9FXGolCdhIaglt0LtaZvll9T9StIbSpcRaBGuRm8toTezmhmHjU-iCc0jGeVKsp8eTyOuJllqDSS-uw"
// step crypto keypair key.pub key.priv --kty RSA --no-password --insecure --force && echo '{"foo": "bar", "bat": "baz"}' | step crypto jwt sign --key key.priv --aud test-client-id --sub test-user --subtle --kid="test-kid" --jti="test-jti"
validIDToken = "eyJhbGciOiJSUzI1NiIsImtpZCI6InRlc3Qta2lkIiwidHlwIjoiSldUIn0.eyJhdWQiOiJ0ZXN0LWNsaWVudC1pZCIsImJhdCI6ImJheiIsImZvbyI6ImJhciIsImlhdCI6MTYwNjc2ODU5MywianRpIjoidGVzdC1qdGkiLCJuYmYiOjE2MDY3Njg1OTMsInN1YiI6InRlc3QtdXNlciJ9.DuqVZ7pGhHqKz7gNr4j2W1s1N8YrSltktH4wW19L4oD1OE2-O72jAnNj5xdjilsa8l7h9ox-5sMF0Tkh3BdRlHQK9dEtNm9tW-JreUnWJ3LCqUs-LZp4NG7edvq2sH_1Bn7O2_NQV51s8Pl04F60CndjQ4NM-6WkqDQTKyY6vJXU7idvM-6TM2HJZK-Na88cOJ9KIK37tL5DhcbsHVF47Dq8uPZ0KbjNQjJLAIi_1GeQBgc6yJhDUwRY4Xu6S0dtTHA6xTI8oSXoamt4bkViEHfJBp97LZQiNz8mku5pVc0aNwP1p4hMHxRHhLXrJjbh-Hx4YFjxtOnIq9t1mHlD4A" //nolint: gosec
)
// if the error string for unsupported user info changes, this will hopefully catch it
_, userInfoNotSupported := (&oidc.Provider{}).UserInfo(context.Background(), nil)
t.Run("PasswordCredentialsGrantAndValidateTokens", func(t *testing.T) {
tests := []struct {
name string
disallowPasswordGrant bool
returnIDTok string
tokenStatusCode int
wantErr string
wantToken oidctypes.Token
userInfo *oidc.UserInfo
userInfoErr error
wantUserInfoCalled bool
}{
{
name: "valid",
returnIDTok: validIDToken,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: validIDToken,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "bar",
"bat": "baz",
"aud": "test-client-id",
"iat": 1.606768593e+09,
"jti": "test-jti",
"nbf": 1.606768593e+09,
"sub": "test-user",
},
},
},
userInfoErr: userInfoNotSupported,
wantUserInfoCalled: true,
},
{
name: "valid with userinfo",
returnIDTok: validIDToken,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: validIDToken,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "awesomeness", // overwrite existing claim
"bat": "baz",
"aud": "test-client-id",
"iat": 1.606768593e+09,
"jti": "test-jti",
"nbf": 1.606768593e+09,
"sub": "test-user",
"groups": "fancy-group", // add a new claim
},
},
},
// claims is private field so we have to use hacks to set it
userInfo: forceUserInfoWithClaims("test-user", `{"foo":"awesomeness","groups":"fancy-group"}`),
wantUserInfoCalled: true,
},
{
name: "password grant not allowed",
disallowPasswordGrant: true, // password grant is not allowed in this ProviderConfig
wantErr: "resource owner password credentials grant is not allowed for this upstream provider according to its configuration",
},
{
name: "token request fails with http error",
tokenStatusCode: http.StatusForbidden,
wantErr: "oauth2: cannot fetch token: 403 Forbidden\nResponse: fake error\n",
},
{
name: "missing ID token",
wantErr: "received response missing ID token",
},
{
name: "invalid ID token",
returnIDTok: "invalid-jwt",
wantErr: "received invalid ID token: oidc: malformed jwt: square/go-jose: compact JWS format must have three parts",
},
{
name: "invalid access token hash",
returnIDTok: invalidAccessTokenHashIDToken,
wantErr: "received invalid ID token: access token hash does not match value in ID token",
},
{
name: "user info fetch error",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: could not get user info: some network error",
userInfoErr: errors.New("some network error"),
},
{
name: "user info sub error",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: userinfo 'sub' claim (test-user-2) did not match id_token 'sub' claim (test-user)",
userInfo: &oidc.UserInfo{Subject: "test-user-2"},
},
{
name: "user info is not json",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: could not unmarshal user info claims: invalid character 'i' looking for beginning of value",
// claims is private field so we have to use hacks to set it
userInfo: forceUserInfoWithClaims("test-user", `invalid-json-data`),
},
{
name: "invalid sub claim",
returnIDTok: invalidSubClaim,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: invalidSubClaim,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "bar",
"bat": "baz",
"aud": "test-client-id",
"iat": 1.61021969e+09,
"jti": "test-jti",
"nbf": 1.61021969e+09,
// no sub claim
},
},
},
wantUserInfoCalled: false,
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
tokenServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, http.MethodPost, r.Method)
require.NoError(t, r.ParseForm())
require.Equal(t, 6, len(r.Form))
require.Equal(t, "password", r.Form.Get("grant_type"))
require.Equal(t, "test-client-id", r.Form.Get("client_id"))
require.Equal(t, "test-client-secret", r.Form.Get("client_secret"))
require.Equal(t, "test-username", r.Form.Get("username"))
require.Equal(t, "test-password", r.Form.Get("password"))
require.Equal(t, "scope1 scope2", r.Form.Get("scope"))
if tt.tokenStatusCode != 0 {
http.Error(w, "fake error", http.StatusForbidden)
return
}
var response struct {
oauth2.Token
IDToken string `json:"id_token,omitempty"`
}
response.AccessToken = "test-access-token"
response.RefreshToken = "test-refresh-token"
response.Expiry = time.Now().Add(time.Hour)
response.IDToken = tt.returnIDTok
w.Header().Set("content-type", "application/json")
require.NoError(t, json.NewEncoder(w).Encode(&response))
}))
t.Cleanup(tokenServer.Close)
p := ProviderConfig{
Name: "test-name",
UsernameClaim: "test-username-claim",
GroupsClaim: "test-groups-claim",
Config: &oauth2.Config{
ClientID: "test-client-id",
ClientSecret: "test-client-secret",
Endpoint: oauth2.Endpoint{
AuthURL: "https://example.com",
TokenURL: tokenServer.URL,
AuthStyle: oauth2.AuthStyleInParams,
},
Scopes: []string{"scope1", "scope2"},
},
Provider: &mockProvider{
userInfo: tt.userInfo,
userInfoErr: tt.userInfoErr,
},
AllowPasswordGrant: !tt.disallowPasswordGrant,
}
tok, err := p.PasswordCredentialsGrantAndValidateTokens(
context.Background(),
"test-username",
"test-password",
)
if tt.wantErr != "" {
require.EqualError(t, err, tt.wantErr)
require.Nil(t, tok)
return
}
require.NoError(t, err)
require.Equal(t, &tt.wantToken, tok)
require.Equal(t, tt.wantUserInfoCalled, p.Provider.(*mockProvider).called)
})
}
})
t.Run("ExchangeAuthcodeAndValidateTokens", func(t *testing.T) {
tests := []struct {
name string
authCode string
expectNonce nonce.Nonce
returnIDTok string
wantErr string
wantToken oidctypes.Token
userInfo *oidc.UserInfo
userInfoErr error
wantUserInfoCalled bool
}{
{
name: "exchange fails with network error",
authCode: "invalid-auth-code",
wantErr: "oauth2: cannot fetch token: 403 Forbidden\nResponse: invalid authorization code\n",
},
{
name: "missing ID token",
authCode: "valid",
wantErr: "received response missing ID token",
},
{
name: "invalid ID token",
authCode: "valid",
returnIDTok: "invalid-jwt",
wantErr: "received invalid ID token: oidc: malformed jwt: square/go-jose: compact JWS format must have three parts",
},
{
name: "invalid access token hash",
authCode: "valid",
returnIDTok: invalidAccessTokenHashIDToken,
wantErr: "received invalid ID token: access token hash does not match value in ID token",
},
{
name: "invalid nonce",
authCode: "valid",
expectNonce: "test-nonce",
returnIDTok: invalidNonceIDToken,
wantErr: `received ID token with invalid nonce: invalid nonce (expected "test-nonce", got "invalid-nonce")`,
},
{
name: "invalid nonce but not checked",
authCode: "valid",
expectNonce: "",
returnIDTok: invalidNonceIDToken,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: invalidNonceIDToken,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"aud": "test-client-id",
"iat": 1.602283741e+09,
"jti": "test-jti",
"nbf": 1.602283741e+09,
"nonce": "invalid-nonce",
"sub": "test-user",
},
},
},
userInfoErr: userInfoNotSupported,
wantUserInfoCalled: true,
},
{
name: "valid",
authCode: "valid",
returnIDTok: validIDToken,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: validIDToken,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "bar",
"bat": "baz",
"aud": "test-client-id",
"iat": 1.606768593e+09,
"jti": "test-jti",
"nbf": 1.606768593e+09,
"sub": "test-user",
},
},
},
userInfoErr: userInfoNotSupported,
wantUserInfoCalled: true,
},
{
name: "user info fetch error",
authCode: "valid",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: could not get user info: some network error",
userInfoErr: errors.New("some network error"),
},
{
name: "user info sub error",
authCode: "valid",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: userinfo 'sub' claim (test-user-2) did not match id_token 'sub' claim (test-user)",
userInfo: &oidc.UserInfo{Subject: "test-user-2"},
},
{
name: "user info is not json",
authCode: "valid",
returnIDTok: validIDToken,
wantErr: "could not fetch user info claims: could not unmarshal user info claims: invalid character 'i' looking for beginning of value",
// claims is private field so we have to use hacks to set it
userInfo: forceUserInfoWithClaims("test-user", `invalid-json-data`),
},
{
name: "valid with user info",
authCode: "valid",
returnIDTok: validIDToken,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: validIDToken,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "awesomeness", // overwrite existing claim
"bat": "baz",
"aud": "test-client-id",
"iat": 1.606768593e+09,
"jti": "test-jti",
"nbf": 1.606768593e+09,
"sub": "test-user",
"groups": "fancy-group", // add a new claim
},
},
},
// claims is private field so we have to use hacks to set it
userInfo: forceUserInfoWithClaims("test-user", `{"foo":"awesomeness","groups":"fancy-group"}`),
wantUserInfoCalled: true,
},
{
name: "invalid sub claim",
authCode: "valid",
returnIDTok: invalidSubClaim,
wantToken: oidctypes.Token{
AccessToken: &oidctypes.AccessToken{
Token: "test-access-token",
Expiry: metav1.Time{},
},
RefreshToken: &oidctypes.RefreshToken{
Token: "test-refresh-token",
},
IDToken: &oidctypes.IDToken{
Token: invalidSubClaim,
Expiry: metav1.Time{},
Claims: map[string]interface{}{
"foo": "bar",
"bat": "baz",
"aud": "test-client-id",
"iat": 1.61021969e+09,
"jti": "test-jti",
"nbf": 1.61021969e+09,
// no sub claim
},
},
},
wantUserInfoCalled: false,
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
tokenServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, http.MethodPost, r.Method)
require.NoError(t, r.ParseForm())
require.Len(t, r.Form, 6)
require.Equal(t, "test-client-id", r.Form.Get("client_id"))
require.Equal(t, "test-client-secret", r.Form.Get("client_secret"))
require.Equal(t, "test-pkce", r.Form.Get("code_verifier"))
require.Equal(t, "authorization_code", r.Form.Get("grant_type"))
require.Equal(t, "https://example.com/callback", r.Form.Get("redirect_uri"))
require.NotEmpty(t, r.Form.Get("code"))
if r.Form.Get("code") != "valid" {
http.Error(w, "invalid authorization code", http.StatusForbidden)
return
}
var response struct {
oauth2.Token
IDToken string `json:"id_token,omitempty"`
}
response.AccessToken = "test-access-token"
response.RefreshToken = "test-refresh-token"
response.Expiry = time.Now().Add(time.Hour)
response.IDToken = tt.returnIDTok
w.Header().Set("content-type", "application/json")
require.NoError(t, json.NewEncoder(w).Encode(&response))
}))
t.Cleanup(tokenServer.Close)
p := ProviderConfig{
Name: "test-name",
UsernameClaim: "test-username-claim",
GroupsClaim: "test-groups-claim",
Config: &oauth2.Config{
ClientID: "test-client-id",
ClientSecret: "test-client-secret",
Endpoint: oauth2.Endpoint{
AuthURL: "https://example.com",
TokenURL: tokenServer.URL,
AuthStyle: oauth2.AuthStyleInParams,
},
Scopes: []string{"scope1", "scope2"},
},
Provider: &mockProvider{
userInfo: tt.userInfo,
userInfoErr: tt.userInfoErr,
},
}
tok, err := p.ExchangeAuthcodeAndValidateTokens(
context.Background(),
tt.authCode,
"test-pkce",
tt.expectNonce,
"https://example.com/callback",
)
if tt.wantErr != "" {
require.EqualError(t, err, tt.wantErr)
require.Nil(t, tok)
return
}
require.NoError(t, err)
require.Equal(t, &tt.wantToken, tok)
require.Equal(t, tt.wantUserInfoCalled, p.Provider.(*mockProvider).called)
})
}
})
}
// mockVerifier returns an *oidc.IDTokenVerifier that validates any correctly serialized JWT without doing much else.
func mockVerifier() *oidc.IDTokenVerifier {
mockKeySet := mockkeyset.NewMockKeySet(gomock.NewController(nil))
mockKeySet.EXPECT().VerifySignature(gomock.Any(), gomock.Any()).
AnyTimes().
DoAndReturn(func(ctx context.Context, jwt string) ([]byte, error) {
jws, err := jose.ParseSigned(jwt)
if err != nil {
return nil, err
}
return jws.UnsafePayloadWithoutVerification(), nil
})
return oidc.NewVerifier("", mockKeySet, &oidc.Config{
SkipIssuerCheck: true,
SkipExpiryCheck: true,
SkipClientIDCheck: true,
})
}
type mockProvider struct {
called bool
userInfo *oidc.UserInfo
userInfoErr error
}
func (m *mockProvider) Verifier(_ *oidc.Config) *oidc.IDTokenVerifier { return mockVerifier() }
func (m *mockProvider) UserInfo(_ context.Context, tokenSource oauth2.TokenSource) (*oidc.UserInfo, error) {
m.called = true
token, err := tokenSource.Token()
if err != nil {
return nil, err
}
if wantToken := "test-access-token"; wantToken != token.AccessToken {
return nil, fmt.Errorf("want token = %#v, got token = %#v", wantToken, token)
}
return m.userInfo, m.userInfoErr
}
func forceUserInfoWithClaims(subject string, claims string) *oidc.UserInfo { //nolint:unparam
userInfo := &oidc.UserInfo{Subject: subject}
// this is some dark magic to set a private field
claimsField := reflect.ValueOf(userInfo).Elem().FieldByName("claims")
claimsPointer := (*[]byte)(unsafe.Pointer(claimsField.UnsafeAddr()))
*claimsPointer = []byte(claims)
return userInfo
}