1 files changed, 116 insertions, 0 deletions
diff --git a/src/knot/events/handlers/dnssec.c b/src/knot/events/handlers/dnssec.c
new file mode 100644
index 0000000..8263b0d
--- /dev/null
+++ b/src/knot/events/handlers/dnssec.c
@@ -0,0 +1,116 @@
+/*  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 <assert.h>
+
+#include "knot/common/log.h"
+#include "knot/conf/conf.h"
+#include "knot/dnssec/zone-events.h"
+#include "knot/updates/apply.h"
+#include "knot/zone/zone.h"
+#include "libknot/errcode.h"
+
+static void log_dnssec_next(const knot_dname_t *zone, knot_time_t refresh_at)
+{
+	char time_str[64] = { 0 };
+	struct tm time_gm = { 0 };
+	time_t refresh = refresh_at;
+	localtime_r(&refresh, &time_gm);
+	strftime(time_str, sizeof(time_str), KNOT_LOG_TIME_FORMAT, &time_gm);
+	if (refresh_at == 0) {
+		log_zone_warning(zone, "DNSSEC, next signing not scheduled");
+	} else {
+		log_zone_info(zone, "DNSSEC, next signing at %s", time_str);
+	}
+}
+
+void event_dnssec_reschedule(conf_t *conf, zone_t *zone,
+			     const zone_sign_reschedule_t *refresh, bool zone_changed)
+{
+	time_t now = time(NULL);
+	time_t ignore = -1;
+	knot_time_t refresh_at = refresh->next_sign;
+
+	refresh_at = knot_time_min(refresh_at, refresh->next_rollover);
+	refresh_at = knot_time_min(refresh_at, refresh->next_nsec3resalt);
+
+	log_dnssec_next(zone->name, (time_t)refresh_at);
+
+	if (refresh->plan_ds_check) {
+		zone->timers.next_ds_check = now;
+	}
+
+	zone_events_schedule_at(zone,
+		ZONE_EVENT_DNSSEC, refresh_at ? (time_t)refresh_at : ignore,
+		ZONE_EVENT_DS_CHECK, refresh->plan_ds_check ? now : ignore
+	);
+	if (zone_changed) {
+		zone_schedule_notify(zone, 0);
+	}
+}
+
+int event_dnssec(conf_t *conf, zone_t *zone)
+{
+	assert(zone);
+
+	zone_sign_reschedule_t resch = { 0 };
+	zone_sign_roll_flags_t r_flags = KEY_ROLL_ALLOW_ALL;
+	int sign_flags = 0;
+	bool zone_changed = false;
+
+	if (zone_get_flag(zone, ZONE_FORCE_RESIGN, true)) {
+		log_zone_info(zone->name, "DNSSEC, dropping previous "
+		              "signatures, re-signing zone");
+		sign_flags = ZONE_SIGN_DROP_SIGNATURES;
+	} else {
+		log_zone_info(zone->name, "DNSSEC, signing zone");
+		sign_flags = 0;
+	}
+
+	if (zone_get_flag(zone, ZONE_FORCE_KSK_ROLL, true)) {
+		r_flags |= KEY_ROLL_FORCE_KSK_ROLL;
+	}
+	if (zone_get_flag(zone, ZONE_FORCE_ZSK_ROLL, true)) {
+		r_flags |= KEY_ROLL_FORCE_ZSK_ROLL;
+	}
+
+	zone_update_t up;
+	int ret = zone_update_init(&up, zone, UPDATE_INCREMENTAL | UPDATE_NO_CHSET);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+
+	ret = knot_dnssec_zone_sign(&up, conf, sign_flags, r_flags, 0, &resch);
+	if (ret != KNOT_EOK) {
+		goto done;
+	}
+
+	zone_changed = !zone_update_no_change(&up);
+
+	ret = zone_update_commit(conf, &up);
+	if (ret != KNOT_EOK) {
+		goto done;
+	}
+
+done:
+	// Schedule dependent events
+	event_dnssec_reschedule(conf, zone, &resch, zone_changed);
+
+	if (ret != KNOT_EOK) {
+		zone_update_clear(&up);
+	}
+	return ret;
+}