Add support for token_endpoint_auth_method (#37)

api/v1alpha1/oauth2client_types.go

@@ -100,6 +100,11 @@ type OAuth2ClientSpec struct {
 	// HydraAdmin is the optional configuration to use for managing
 	// this client
 	HydraAdmin HydraAdmin `json:"hydraAdmin,omitempty"`
+
+	// +kubebuilder:validation:Enum=;client_secret_basic;client_secret_post;private_key_jwt;none
+	//
+	// Indication which authenticaiton method shoud be used for the token endpoint
+	TokenEndpointAuthMethod TokenEndpointAuthMethod `json:"tokenEndpointAuthMethod,omitempty"`
 }
 
 // +kubebuilder:validation:Enum=client_credentials;authorization_code;implicit;refresh_token
@@ -114,6 +119,10 @@ type ResponseType string
 // RedirectURI represents a redirect URI for the client
 type RedirectURI string
 
+// +kubebuilder:validation:Enum=;client_secret_basic;client_secret_post;private_key_jwt;none
+// TokenEndpointAuthMethod represents an authenticaiton method for token endpoint
+type TokenEndpointAuthMethod string
+
 // OAuth2ClientStatus defines the observed state of OAuth2Client
 type OAuth2ClientStatus struct {
 	// ObservedGeneration represents the most recent generation observed by the daemon set controller.
@@ -162,6 +171,7 @@ func (c *OAuth2Client) ToOAuth2ClientJSON() *hydra.OAuth2ClientJSON {
 		RedirectURIs:            redirectToStringSlice(c.Spec.RedirectURIs),
 		Scope:                   c.Spec.Scope,
 		Owner:                   fmt.Sprintf("%s/%s", c.Name, c.Namespace),
+		TokenEndpointAuthMethod: string(c.Spec.TokenEndpointAuthMethod),
 	}
 }
 

config/crd/bases/hydra.ory.sh_oauth2clients.yaml

@@ -449,6 +449,14 @@ spec:
               maxItems: 3
               minItems: 1
               type: array
+            tokenEndpointAuthMethod:
+              description: Indication which authenticaiton method shoud be used for the token endpoint.
+              type: string
+              enum:
+              - client_secret_basic
+              - client_secret_post
+              - private_key_jwt
+              - none
             scope:
               description: Scope is a string containing a space-separated list of
                 scope values (as described in Section 3.3 of OAuth 2.0 [RFC6749])

config/samples/hydra_v1alpha1_oauth2client.yaml

@@ -13,9 +13,6 @@ spec:
     - id_token
     - code
     - token
-  redirectUris:
-    - https://client/account
-    - http://localhost:8080
   scope: "read write"
   secretName: my-secret-123
   # these are optional
@@ -29,4 +26,5 @@ spec:
     port: 4445
     endpoint: /clients
     forwardedProto: https
+  tokenEndpointAuthMethod: client_secret_basic
   

config/samples/hydra_v1alpha1_oauth2client_user_credentials.yaml

@@ -36,3 +36,4 @@ spec:
     port: 4445
     endpoint: /clients
     forwardedProto: https
+  tokenEndpointAuthMethod: client_secret_basic

hydra/client_test.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
+	"strings"
 	"testing"
 
 	"k8s.io/utils/pointer"
@@ -21,11 +22,11 @@ const (
 	schemeHTTP      = "http"
 
 	testID            = "test-id"
-	testClient        = `{"client_id":"test-id","owner":"test-name","scope":"some,scopes","grant_types":["type1"]}`
-	testClientCreated = `{"client_id":"test-id-2","client_secret":"TmGkvcY7k526","owner":"test-name-2","scope":"some,other,scopes","grant_types":["type2"]}`
-	testClientUpdated = `{"client_id":"test-id-3","client_secret":"xFoPPm654por","owner":"test-name-3","scope":"yet,another,scope","grant_types":["type3"]}`
-	testClientList    = `{"client_id":"test-id-4","owner":"test-name-4","scope":"scope1 scope2","grant_types":["type4"]}`
-	testClientList2   = `{"client_id":"test-id-5","owner":"test-name-5","scope":"scope3 scope4","grant_types":["type5"]}`
+	testClient        = `{"client_id":"test-id","owner":"test-name","scope":"some,scopes","grant_types":["type1"],"token_endpoint_auth_method":"client_secret_basic"}`
+	testClientCreated = `{"client_id":"test-id-2","client_secret":"TmGkvcY7k526","owner":"test-name-2","scope":"some,other,scopes","grant_types":["type2"],"token_endpoint_auth_method":"client_secret_basic"}`
+	testClientUpdated = `{"client_id":"test-id-3","client_secret":"xFoPPm654por","owner":"test-name-3","scope":"yet,another,scope","grant_types":["type3"],"token_endpoint_auth_method":"client_secret_basic"}`
+	testClientList    = `{"client_id":"test-id-4","owner":"test-name-4","scope":"scope1 scope2","grant_types":["type4"],"token_endpoint_auth_method":"client_secret_basic"}`
+	testClientList2   = `{"client_id":"test-id-5","owner":"test-name-5","scope":"scope3 scope4","grant_types":["type5"],"token_endpoint_auth_method":"client_secret_basic"}`
 
 	statusNotFoundBody            = `{"error":"Not Found","error_description":"Unable to locate the requested resource","status_code":404,"request_id":"id"}`
 	statusConflictBody            = `{"error":"Unable to insert or update resource because a resource with that value exists already","error_description":"","status_code":409,"request_id":"id"`
@@ -171,6 +172,10 @@ func TestCRUD(t *testing.T) {
 					assert.Equal(testOAuthJSONPost.Owner, o.Owner)
 					assert.NotNil(o.Secret)
 					assert.NotNil(o.ClientID)
+					assert.NotNil(o.TokenEndpointAuthMethod)
+					if testOAuthJSONPost.TokenEndpointAuthMethod != "" {
+						assert.Equal(testOAuthJSONPost.TokenEndpointAuthMethod, o.TokenEndpointAuthMethod)
+					}
 				}
 			})
 		}
@@ -323,6 +328,28 @@ func TestCRUD(t *testing.T) {
 			})
 		}
 	})
+
+	t.Run("default parameters", func(t *testing.T) {
+		var input = &hydra.OAuth2ClientJSON{
+			Scope:      "some,other,scopes",
+			GrantTypes: []string{"type2"},
+			Owner:      "test-name-2",
+		}
+		assert.Equal(input.TokenEndpointAuthMethod, "")
+		b, _ := json.Marshal(input)
+		payload := string(b)
+		assert.Equal(strings.Index(payload, "token_endpoint_auth_method"), -1)
+
+		input = &hydra.OAuth2ClientJSON{
+			Scope:                   "some,other,scopes",
+			GrantTypes:              []string{"type2"},
+			Owner:                   "test-name-3",
+			TokenEndpointAuthMethod: "none",
+		}
+		b, _ = json.Marshal(input)
+		payload = string(b)
+		assert.True(strings.Index(payload, "token_endpoint_auth_method") > 0)
+	})
 }
 
 func runServer(c *hydra.Client, h http.HandlerFunc) {

hydra/types.go

@@ -11,6 +11,7 @@ type OAuth2ClientJSON struct {
 	ResponseTypes           []string `json:"response_types,omitempty"`
 	Scope                   string   `json:"scope"`
 	Owner                   string   `json:"owner"`
+	TokenEndpointAuthMethod string   `json:"token_endpoint_auth_method,omitempty"`
 }
 
 // Oauth2ClientCredentials represents client ID and password fetched from a Kubernetes secret