1 files changed, 105 insertions, 0 deletions
diff --git a/src/knot/common/systemd.h b/src/knot/common/systemd.h
new file mode 100644
index 0000000..1cefd9c
--- /dev/null
+++ b/src/knot/common/systemd.h
@@ -0,0 +1,105 @@
+/*  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/>.
+ */
+
+/*!
+ * \brief Systemd API wrappers.
+ */
+
+#pragma once
+
+#include "libknot/libknot.h"
+
+#define KNOT_DBUS_NAME "cz.nic.knotd"
+#define KNOT_DBUS_PATH "/cz/nic/knotd"
+
+#define KNOT_BUS_EVENT_STARTED       "started"
+#define KNOT_BUS_EVENT_STOPPED       "stopped"
+#define KNOT_BUS_EVENT_ZONE_UPD      "zone_updated"
+#define KNOT_BUS_EVENT_ZONE_KSK_SUBM "zone_ksk_submission"
+#define KNOT_BUS_EVENT_ZONE_INVALID  "zone_dnssec_invalid"
+
+/*!
+ * \brief Notify systemd about zone loading start.
+ */
+void systemd_zone_load_timeout_notify(void);
+
+/*!
+ * \brief Update systemd service status with information about number
+ *        of scheduled tasks.
+ *
+ * \param tasks  Number of tasks to be done.
+ */
+void systemd_tasks_status_notify(int tasks);
+
+/*!
+ * \brief Notify systemd about service is ready.
+ */
+void systemd_ready_notify(void);
+
+/*!
+ * \brief Notify systemd about service is reloading.
+ */
+void systemd_reloading_notify(void);
+
+/*!
+ * \brief Notify systemd about service is stopping.
+ */
+void systemd_stopping_notify(void);
+
+/*!
+ * \brief Creates unique D-Bus sender reference (common for whole process).
+ *
+ * \retval KNOT_EOK on successful create of reference.
+ * \retval Negative value on error.
+ */
+int systemd_dbus_open(void);
+
+/*!
+ * \brief Closes D-Bus.
+ */
+void systemd_dbus_close(void);
+
+/*!
+ * \brief Emit event signal for started daemon.
+ *
+ * \param up  Indication if the server has been started.
+ */
+void systemd_emit_running(bool up);
+
+/*!
+ * \brief Emit event signal for updated zones.
+ *
+ * \param zone_name  Zone name.
+ * \param serial     Current zone SOA serial.
+ */
+void systemd_emit_zone_updated(const knot_dname_t *zone_name, uint32_t serial);
+
+/*!
+ * \brief Emit event signal for KSK submission.
+ *
+ * \param zone_name  Zone name.
+ * \param keytag     Keytag of the ready key.
+ * \param keyid      KASP id of the ready key.
+ */
+void systemd_emit_zone_submission(const knot_dname_t *zone_name, uint16_t keytag,
+                                  const char *keyid);
+
+/*!
+ * \brief Emit event signal for failed DNSSEC validation.
+ *
+ * \param zone_name  Zone name.
+ */
+void systemd_emit_zone_invalid(const knot_dname_t *zone_name);