diff --git a/server/handlers.go b/server/handlers.go index f8d0ed64c3..d129cc8463 100644 --- a/server/handlers.go +++ b/server/handlers.go @@ -864,6 +864,8 @@ func (s *Server) handleToken(w http.ResponseWriter, r *http.Request) { s.withClientFromStorage(w, r, s.handlePasswordGrant) case grantTypeTokenExchange: s.withClientFromStorage(w, r, s.handleTokenExchange) + case grantTypeClientCredentials: + s.withClientFromStorage(w, r, s.handleClientCredentialsGrant) default: s.tokenErrHelper(w, errUnsupportedGrantType, "", http.StatusBadRequest) } @@ -1116,6 +1118,35 @@ func (s *Server) handleUserInfo(w http.ResponseWriter, r *http.Request) { w.Write(claims) } +func (s *Server) handleClientCredentialsGrant(w http.ResponseWriter, r *http.Request, client storage.Client) { + if err := r.ParseForm(); err != nil { + s.tokenErrHelper(w, errInvalidRequest, "Couldn't parse data", http.StatusBadRequest) + return + } + q := r.Form + + nonce := q.Get("nonce") + scopes := strings.Fields(q.Get("scope")) + + claims := storage.Claims{UserID: client.ID} + + accessToken, _, err := s.newAccessToken(r.Context(), client.ID, claims, scopes, nonce, "client") + if err != nil { + s.logger.ErrorContext(r.Context(), "failed to create new access token", "err", err) + s.tokenErrHelper(w, errServerError, err.Error(), http.StatusInternalServerError) + return + } + + idToken, expiry, err := s.newIDToken(r.Context(), client.ID, claims, scopes, nonce, accessToken, "", "client") + if err != nil { + s.tokenErrHelper(w, errServerError, fmt.Sprintf("failed to create ID token: %v", err), http.StatusInternalServerError) + return + } + + resp := s.toAccessTokenResponse(idToken, accessToken, "", expiry) + s.writeAccessToken(w, resp) +} + func (s *Server) handlePasswordGrant(w http.ResponseWriter, r *http.Request, client storage.Client) { ctx := r.Context() // Parse the fields diff --git a/server/handlers_test.go b/server/handlers_test.go index 114712ba79..6681a745dc 100644 --- a/server/handlers_test.go +++ b/server/handlers_test.go @@ -57,6 +57,7 @@ func TestHandleDiscovery(t *testing.T) { Introspect: fmt.Sprintf("%s/token/introspect", httpServer.URL), GrantTypes: []string{ "authorization_code", + "client_credentials", "refresh_token", "urn:ietf:params:oauth:grant-type:device_code", "urn:ietf:params:oauth:grant-type:token-exchange", diff --git a/server/oauth2.go b/server/oauth2.go index 18cc3dd46d..e4ce87511e 100644 --- a/server/oauth2.go +++ b/server/oauth2.go @@ -133,6 +133,7 @@ const ( grantTypePassword = "password" grantTypeDeviceCode = "urn:ietf:params:oauth:grant-type:device_code" grantTypeTokenExchange = "urn:ietf:params:oauth:grant-type:token-exchange" + grantTypeClientCredentials = "client_credentials" ) const ( diff --git a/server/server.go b/server/server.go index 70e8ae755f..8405f3fb2b 100644 --- a/server/server.go +++ b/server/server.go @@ -239,6 +239,7 @@ func newServer(ctx context.Context, c Config, rotationStrategy rotationStrategy) grantTypeRefreshToken: true, grantTypeDeviceCode: true, grantTypeTokenExchange: true, + grantTypeClientCredentials: true, } supportedRes := make(map[string]bool) diff --git a/server/server_test.go b/server/server_test.go index a922aa751c..6a043d23f8 100644 --- a/server/server_test.go +++ b/server/server_test.go @@ -101,6 +101,7 @@ func newTestServer(t *testing.T, updateConfig func(c *Config)) (*httptest.Server grantTypeTokenExchange, grantTypeImplicit, grantTypePassword, + grantTypeClientCredentials, }, } if updateConfig != nil { @@ -1757,7 +1758,7 @@ func TestServerSupportedGrants(t *testing.T) { { name: "Simple", config: func(c *Config) {}, - resGrants: []string{grantTypeAuthorizationCode, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, + resGrants: []string{grantTypeAuthorizationCode, grantTypeClientCredentials, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, }, { name: "Minimal", @@ -1767,12 +1768,12 @@ func TestServerSupportedGrants(t *testing.T) { { name: "With password connector", config: func(c *Config) { c.PasswordConnector = "local" }, - resGrants: []string{grantTypeAuthorizationCode, grantTypePassword, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, + resGrants: []string{grantTypeAuthorizationCode, grantTypeClientCredentials, grantTypePassword, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, }, { name: "With token response", config: func(c *Config) { c.SupportedResponseTypes = append(c.SupportedResponseTypes, responseTypeToken) }, - resGrants: []string{grantTypeAuthorizationCode, grantTypeImplicit, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, + resGrants: []string{grantTypeAuthorizationCode, grantTypeClientCredentials, grantTypeImplicit, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, }, { name: "All", @@ -1780,7 +1781,7 @@ func TestServerSupportedGrants(t *testing.T) { c.PasswordConnector = "local" c.SupportedResponseTypes = append(c.SupportedResponseTypes, responseTypeToken) }, - resGrants: []string{grantTypeAuthorizationCode, grantTypeImplicit, grantTypePassword, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, + resGrants: []string{grantTypeAuthorizationCode, grantTypeClientCredentials, grantTypeImplicit, grantTypePassword, grantTypeRefreshToken, grantTypeDeviceCode, grantTypeTokenExchange}, }, }