1 files changed, 83 insertions, 0 deletions
diff --git a/src/knot/updates/acl.h b/src/knot/updates/acl.h
new file mode 100644
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+++ b/src/knot/updates/acl.h
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+/*  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/>.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <sys/socket.h>
+
+#include "libknot/tsig.h"
+#include "knot/conf/conf.h"
+
+/*! \brief ACL actions. */
+typedef enum {
+	ACL_ACTION_QUERY    = 0,
+	ACL_ACTION_NOTIFY   = 1,
+	ACL_ACTION_TRANSFER = 2,
+	ACL_ACTION_UPDATE   = 3
+} acl_action_t;
+
+/*! \brief ACL update owner matching options. */
+typedef enum {
+	ACL_UPDATE_OWNER_NONE = 0,
+	ACL_UPDATE_OWNER_KEY  = 1,
+	ACL_UPDATE_OWNER_ZONE = 2,
+	ACL_UPDATE_OWNER_NAME = 3,
+} acl_update_owner_t;
+
+/*! \bref ACL update owner comparison options. */
+typedef enum {
+	ACL_UPDATE_MATCH_SUBEQ = 0,
+	ACL_UPDATE_MATCH_EQ    = 1,
+	ACL_UPDATE_MATCH_SUB   = 2,
+} acl_update_owner_match_t;
+
+/*!
+ * \brief Checks if the address and/or tsig key matches given ACL list.
+ *
+ * If a proper ACL rule is found and tsig.name is not empty, tsig.secret is filled.
+ *
+ * \param conf       Configuration.
+ * \param acl        Pointer to ACL config multivalued identifier.
+ * \param action     ACL action.
+ * \param addr       IP address.
+ * \param tsig       TSIG parameters.
+ * \param zone_name  Zone name.
+ * \param query      Update query.
+ *
+ * \retval True if authenticated.
+ */
+bool acl_allowed(conf_t *conf, conf_val_t *acl, acl_action_t action,
+                 const struct sockaddr_storage *addr, knot_tsig_key_t *tsig,
+                 const knot_dname_t *zone_name, knot_pkt_t *query);
+
+/*!
+ * \brief Checks if the address and/or tsig key matches a remote from the list.
+ *
+ * Global (server.automatic-acl) and per remote automatic ACL functionality
+ * must be enabled in order to decide the remote is allowed.
+ *
+ * If a proper REMOTE is found and tsig.name is not empty, tsig.secret is filled.
+ *
+ * \param conf       Configuration.
+ * \param rmts       Pointer to REMOTE config multivalued identifier.
+ * \param addr       IP address.
+ * \param tsig       TSIG parameters.
+ *
+ * \retval True if authenticated.
+ */
+bool rmt_allowed(conf_t *conf, conf_val_t *rmts, const struct sockaddr_storage *addr,
+                 knot_tsig_key_t *tsig);