1 files changed, 49 insertions, 0 deletions
diff --git a/src/knot/events/handlers/ds_check.c b/src/knot/events/handlers/ds_check.c
new file mode 100644
index 0000000..0138bed
--- /dev/null
+++ b/src/knot/events/handlers/ds_check.c
@@ -0,0 +1,49 @@
+/*  Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "knot/dnssec/ds_query.h"
+#include "knot/zone/zone.h"
+
+int event_ds_check(conf_t *conf, zone_t *zone)
+{
+	kdnssec_ctx_t ctx = { 0 };
+
+	int ret = kdnssec_ctx_init(conf, &ctx, zone->name, zone_kaspdb(zone), NULL);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+
+	ret = knot_parent_ds_query(conf, &ctx, conf->cache.srv_tcp_remote_io_timeout);
+
+	zone->timers.next_ds_check = 0;
+	switch (ret) {
+	case KNOT_NO_READY_KEY:
+		break;
+	case KNOT_EOK:
+		zone_events_schedule_now(zone, ZONE_EVENT_DNSSEC);
+		break;
+	default:
+		if (ctx.policy->ksk_sbm_check_interval > 0) {
+			time_t next_check = time(NULL) + ctx.policy->ksk_sbm_check_interval;
+			zone->timers.next_ds_check = next_check;
+			zone_events_schedule_at(zone, ZONE_EVENT_DS_CHECK, next_check);
+		}
+	}
+
+	kdnssec_ctx_deinit(&ctx);
+
+	return KNOT_EOK; // allways ok, if failure it has been rescheduled
+}