fix: get groups claim from idtokenclaims (#3101)

* fix: get groups claim from idtokenclaims

Signed-off-by: Philipp Lange <ph.lange@pm.me>

* fix: lint

Signed-off-by: Philipp Lange <ph.lange@pm.me>

---------

Signed-off-by: Philipp Lange <ph.lange@pm.me>

pkg/api/routes.go

@@ -17,6 +17,7 @@ import (
 	"net/url"
 	"path"
 	"regexp"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -1992,13 +1993,25 @@ func (rh *RouteHandler) OpenIDCodeExchangeCallback() rp.CodeExchangeUserinfoCall
 
 		val, ok := info.Claims["groups"].([]interface{})
 		if !ok {
-			rh.c.Log.Info().Msgf("failed to find any 'groups' claim for user %s", email)
+			rh.c.Log.Info().Msgf("failed to find any 'groups' claim for user %s in UserInfo", email)
 		}
 
 		for _, group := range val {
 			groups = append(groups, fmt.Sprint(group))
 		}
 
+		val, ok = tokens.IDTokenClaims.Claims["groups"].([]interface{})
+		if !ok {
+			rh.c.Log.Info().Msgf("failed to find any 'groups' claim for user %s in IDTokenClaimsToken", email)
+		}
+
+		for _, group := range val {
+			groups = append(groups, fmt.Sprint(group))
+		}
+
+		slices.Sort(groups)
+		groups = slices.Compact(groups)
+
 		callbackUI, err := OAuth2Callback(rh.c, w, r, state, email, groups)
 		if err != nil {
 			if errors.Is(err, zerr.ErrInvalidStateCookie) {

pkg/api/routes_test.go

@@ -117,6 +117,40 @@ func TestRoutes(t *testing.T) {
 			So(resp.StatusCode, ShouldEqual, http.StatusUnauthorized)
 		})
 
+		Convey("Test OpenIDCodeExchangeCallback", func() {
+			callback := rthdlr.OpenIDCodeExchangeCallback()
+			ctx := context.TODO()
+
+			request, _ := http.NewRequestWithContext(ctx, http.MethodGet, baseURL, nil)
+			response := httptest.NewRecorder()
+
+			tokens := &oidc.Tokens[*oidc.IDTokenClaims]{
+				IDTokenClaims: &oidc.IDTokenClaims{
+					Claims: map[string]any{
+						"groups": []interface{}{"group1", "group3"},
+					},
+				},
+			}
+			relyingParty, err := rp.NewRelyingPartyOAuth(&oauth2.Config{})
+			So(err, ShouldBeNil)
+
+			userinfo := &oidc.UserInfo{
+				Subject: "sub",
+				Claims: map[string]any{
+					"email":  "test@test.com",
+					"groups": []interface{}{"group1", "group2"},
+				},
+				UserInfoEmail: oidc.UserInfoEmail{Email: "test@test.com"},
+			}
+
+			callback(response, request, tokens, "state", relyingParty, userinfo)
+
+			resp := response.Result()
+			defer resp.Body.Close()
+			So(resp, ShouldNotBeNil)
+			So(resp.StatusCode, ShouldEqual, http.StatusUnauthorized)
+		})
+
 		Convey("Test OAuth2Callback errors", func() {
 			ctx := context.TODO()