# HG changeset patch
# User Peter Sanchez <peter@netlandish.com>
# Date 1689729287 21600
#      Tue Jul 18 19:14:47 2023 -0600
# Node ID abb365e5681558e4ec02ea07e433631ffaecfc44
# Parent  593c0022ae852c71e63559e49d6a5a2e5fd2a011
Add support for RFC 9207

diff --git a/routes.go b/routes.go
--- a/routes.go
+++ b/routes.go
@@ -439,8 +439,10 @@
 		return s.authorizeError(c, "", state, "server_error", err.Error())
 	}
 
+	origin := gctx.Server.Config.BaseURI()
 	gmap := gobwebs.Map{
 		"code": code,
+		"iss":  origin, // RFC 9207
 	}
 	if state != "" {
 		gmap["state"] = state
@@ -704,6 +706,7 @@
 		Doc           string   `json:"service_documentation"`
 		IntroEndpoint string   `json:"introspection_endpoint"`
 		IntroAuth     []string `json:"introspection_endpoint_auth_methods_supported"`
+		ISS           bool     `json:"authorization_response_iss_parameter_supported"`
 	}{
 		Issuer:        origin,
 		AuthEndpoint:  aURL,
@@ -714,6 +717,7 @@
 		Doc:           s.config.DocumentationURL,
 		IntroEndpoint: iURL,
 		IntroAuth:     []string{"none"},
+		ISS:           true,
 	}
 	return c.JSON(http.StatusOK, &ret)
 }