+ afb_session_unref(context->session);
+ context->session = NULL;
+ afb_cred_unref(context->credentials);
+ context->credentials = NULL;
+ afb_token_unref(context->token);
+ context->token = NULL;
+}
+
+void afb_context_change_cred(struct afb_context *context, struct afb_cred *cred)
+{
+ struct afb_cred *ocred = context->credentials;
+ if (ocred != cred) {
+ context->credentials = afb_cred_addref(cred);
+ afb_cred_unref(ocred);
+ }
+}
+
+void afb_context_change_token(struct afb_context *context, struct afb_token *token)
+{
+ struct afb_token *otoken = context->token;
+ if (otoken != token) {
+ context->validated = 0;
+ context->invalidated = 0;
+ context->token = afb_token_addref(token);
+ afb_token_unref(otoken);
+ }
+}
+
+const char *afb_context_on_behalf_export(struct afb_context *context)
+{
+ return context->credentials ? afb_cred_export(context->credentials) : NULL;