prop_request
int prop_request(struct propctx *ctx, const char **names);
int (*prop_request)(struct propctx *ctx, const char **names);
result = prop_request(sconn->sparams->propctx, propnames);
result = prop_request(sconn->sparams->propctx, password_request);
utils->prop_request=&prop_request;
result = prop_request(s_conn->sparams->propctx, password_request);
result = sparams->utils->prop_request(sparams->propctx, password_request);
result = sparams->utils->prop_request(sparams->propctx, password_request);