1 files changed, 122 insertions, 0 deletions
diff --git a/src/libknot/rrtype/tsig.h b/src/libknot/rrtype/tsig.h
new file mode 100644
index 0000000..083a063
--- /dev/null
+++ b/src/libknot/rrtype/tsig.h
@@ -0,0 +1,122 @@
+/*  Copyright (C) 2018 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/>.
+ */
+
+/*!
+ * \file
+ *
+ * \brief TSIG manipulation.
+ *
+ * \addtogroup rrtype
+ * @{
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include "libdnssec/binary.h"
+#include "libdnssec/tsig.h"
+#include "libknot/consts.h"
+#include "libknot/rrset.h"
+#include "libknot/tsig.h"
+
+enum tsig_consts {
+	KNOT_TSIG_ITEM_COUNT = 7,
+	KNOT_TSIG_VARIABLES_LENGTH = sizeof(uint16_t)	// class
+	                             + sizeof(uint32_t)	// ttl
+	                             + 6		// time signed
+	                             + sizeof(uint16_t)	// fudge
+	                             + sizeof(uint16_t)	// error
+	                             + sizeof(uint16_t),// other data length
+	KNOT_TSIG_TIMERS_LENGTH = sizeof(uint16_t)	//fudge
+	                          + 6			// time signed
+};
+
+/*!
+ * \brief Create TSIG RDATA.
+ *
+ * \param rr TSIG RR to contain created data.
+ * \param alg Algorithm name.
+ * \param maclen Algorithm MAC len (may be set to 0 for empty MAC).
+ * \param tsig_err TSIG error code.
+ *
+ * \retval KNOT_EINVAL
+ * \retval KNOT_EOK
+ */
+int knot_tsig_create_rdata(knot_rrset_t *rr, const knot_dname_t *alg,
+                      uint16_t maclen, uint16_t tsig_err);
+
+int knot_tsig_rdata_set_time_signed(knot_rrset_t *tsig, uint64_t time);
+
+int knot_tsig_rdata_store_current_time(knot_rrset_t *tsig);
+
+int knot_tsig_rdata_set_fudge(knot_rrset_t *tsig, uint16_t fudge);
+
+int knot_tsig_rdata_set_mac(knot_rrset_t *tsig, uint16_t length, const uint8_t *mac);
+
+int knot_tsig_rdata_set_orig_id(knot_rrset_t *tsig, uint16_t id);
+
+int knot_tsig_rdata_set_other_data(knot_rrset_t *tsig, uint16_t length,
+                              const uint8_t *other_data);
+
+const knot_dname_t *knot_tsig_rdata_alg_name(const knot_rrset_t *tsig);
+
+dnssec_tsig_algorithm_t knot_tsig_rdata_alg(const knot_rrset_t *tsig);
+
+uint64_t knot_tsig_rdata_time_signed(const knot_rrset_t *tsig);
+
+uint16_t knot_tsig_rdata_fudge(const knot_rrset_t *tsig);
+
+const uint8_t *knot_tsig_rdata_mac(const knot_rrset_t *tsig);
+
+size_t knot_tsig_rdata_mac_length(const knot_rrset_t *tsig);
+
+uint16_t knot_tsig_rdata_orig_id(const knot_rrset_t *tsig);
+
+uint16_t knot_tsig_rdata_error(const knot_rrset_t *tsig);
+
+const uint8_t *knot_tsig_rdata_other_data(const knot_rrset_t *tsig);
+
+uint16_t knot_tsig_rdata_other_data_length(const knot_rrset_t *tsig);
+
+size_t knot_tsig_rdata_tsig_variables_length(const knot_rrset_t *tsig);
+
+size_t knot_tsig_rdata_tsig_timers_length(void);
+
+/*!
+ * \brief Return standard TSIG RRSET wire size for given algorithm.
+ *
+ * \param key Signing key descriptor.
+ *
+ * \return RRSET wire size.
+ */
+size_t knot_tsig_wire_size(const knot_tsig_key_t *key);
+
+/*!
+ * \brief Return TSIG RRSET maximum wire size for given algorithm.
+ *
+ * This size is reached if error reply with BADTIME.
+ *
+ * \param key Signing key descriptor.
+ *
+ * \return RRSET wire size.
+ */
+size_t knot_tsig_wire_maxsize(const knot_tsig_key_t *key);
+
+/*! \todo Documentation. */
+bool knot_tsig_rdata_is_ok(const knot_rrset_t *tsig);
+
+/*! @} */