Function json_add_config

lightningd/configs.c:129–209

Config vars can have multiple names ("--large-channels|--wumbo"), but first * is preferred. * wrap_object means we wrap json in an object of that name, otherwise outputs * raw fields. */

 * raw fields.
 */
static void json_add_config(struct lightningd *ld,
			    struct json_stream *response,
			    bool always_include,
			    bool wrap_object,
			    const struct opt_table *ot,
			    const char **names)
{
	char buf[CONFIG_SHOW_BUFSIZE + sizeof("...")];
	const char *val;
	struct configvar *cv;

	/* This tells us if they actually set the option */
	cv = configvar_first(ld->configvars, names);

	/* Ignore dev/hidden options (deprecated) unless they actually used it */
	if (!cv
	    && (ot->desc == opt_hidden || (ot->type & OPT_DEV))
	    && !always_include) {
		return;
	}

	/* Ignore options which simply exit */
	if (ot->type & OPT_EXITS)
		return;

	if (ot->type & OPT_NOARG) {
		if (wrap_object)
			json_object_start(response, names[0]);
		json_add_bool(response, "set", cv != NULL);
		json_add_source(response, "source", cv);
		json_add_config_plugin(response, ld->plugins, "plugin", ot);
		if (ot->type & OPT_DYNAMIC)
			json_add_bool(response, "dynamic", true);
		if (wrap_object)
			json_object_end(response);
		return;
	}

	assert(ot->type & OPT_HASARG);
	if (ot->type & OPT_MULTI) {
		if (wrap_object)
			json_object_start(response, names[0]);
		json_array_start(response, configval_fieldname(ot));
		while (cv) {
			val = get_opt_val(ot, buf, cv);
			json_add_configval(response, NULL, ot, val);
			cv = configvar_next(ld->configvars, cv, names);
		}
		json_array_end(response);

		/* Iterate again, for sources */
		json_array_start(response, "sources");
		for (cv = configvar_first(ld->configvars, names);
		     cv;
		     cv = configvar_next(ld->configvars, cv, names)) {
			json_add_source(response, NULL, cv);
		}
		json_array_end(response);