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+/* Copyright (C) 2021 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 Zone scanner auxiliary functions.
+ *
+ * \addtogroup zone_scanner
+ * @{
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include "libzscanner/scanner.h"
+
+/*! \brief Transforms digit char to number. */
+extern const uint8_t digit_to_num[];
+
+/*! \brief Transforms first hex char to the part of the total number. */
+extern const uint8_t first_hex_to_num[];
+/*! \brief Transforms second hex char to the part of the total number. */
+extern const uint8_t second_hex_to_num[];
+
+/*! \brief Transforms first Base64 char. */
+extern const uint8_t first_base64_to_num[];
+/*! \brief Transforms left part of the second Base64 char. */
+extern const uint8_t second_left_base64_to_num[];
+/*! \brief Transforms left part of the second Base64 char. */
+extern const uint8_t second_right_base64_to_num[];
+/*! \brief Transforms left part of the third Base64 char. */
+extern const uint8_t third_left_base64_to_num[];
+/*! \brief Transforms left part of the third Base64 char. */
+extern const uint8_t third_right_base64_to_num[];
+/*! \brief Transforms fourth Base64 char. */
+extern const uint8_t fourth_base64_to_num[];
+
+/*! \brief Transforms first Base32hex char. */
+extern const uint8_t first_base32hex_to_num[];
+/*! \brief Transforms left part of the second Base32hex char. */
+extern const uint8_t second_left_base32hex_to_num[];
+/*! \brief Transforms right part of the second Base32hex char. */
+extern const uint8_t second_right_base32hex_to_num[];
+/*! \brief Transforms third Base32hex char. */
+extern const uint8_t third_base32hex_to_num[];
+/*! \brief Transforms left part of the fourth Base32hex char. */
+extern const uint8_t fourth_left_base32hex_to_num[];
+/*! \brief Transforms right part of the fourth Base32hex char. */
+extern const uint8_t fourth_right_base32hex_to_num[];
+/*! \brief Transforms left part of the fifth Base32hex char. */
+extern const uint8_t fifth_left_base32hex_to_num[];
+/*! \brief Transforms right part of the fifth Base32hex char. */
+extern const uint8_t fifth_right_base32hex_to_num[];
+/*! \brief Transforms sixth Base32hex char. */
+extern const uint8_t sixth_base32hex_to_num[];
+/*! \brief Transforms left part of the seventh Base32hex char. */
+extern const uint8_t seventh_left_base32hex_to_num[];
+/*! \brief Transforms right part of the seventh Base32hex char. */
+extern const uint8_t seventh_right_base32hex_to_num[];
+/*! \brief Transforms eighth Base32hex char. */
+extern const uint8_t eighth_base32hex_to_num[];
+
+/*!
+ * \brief Converts YYYYMMDDHHMMSS time string to unsigned 32-bit timestamp.
+ *
+ * \param buff Buffer containing time string.
+ * \param timestamp Computed timestamp.
+ *
+ * \retval KNOT_EOK if success.
+ * \retval error_code if error.
+ */
+int date_to_timestamp(uint8_t *buff, uint32_t *timestamp);
+
+/*!
+ * \brief Converts wire-format dname to text dname.
+ *
+ * \param data Buffer containing wire-format dname.
+ * \param data_len Length of the buffer.
+ * \param text Text output.
+ */
+void wire_dname_to_str(const uint8_t *data,
+ const uint32_t data_len,
+ char *text);
+
+/*!
+ * \brief Converts unsigned integer to mantissa*10^(exponent).
+ *
+ * Given number is encoded as two 4-bit numbers. First part is mantissa [0-9],
+ * second part is decimal exponent [0-15]. Result is concatenation of these
+ * two blocks.
+ *
+ * \param number Number to convert.
+ *
+ * \retval number encoded number.
+ */
+uint8_t loc64to8(uint64_t number);
+
+/*!
+ * \brief Sorts mandatory parameter values of the SVCB record.
+ *
+ * \param list_begin Start of the parameter list.
+ * \param list_end End of the parameter list.
+ */
+void svcb_mandatory_sort(uint8_t *list_begin, uint8_t *list_end);
+
+/*!
+ * \brief Sorts parameters of the SVCB record.
+ *
+ * \param scanner Scanner context.
+ * \param rdata_end Current end of the output data.
+ *
+ * \return ZS_*.
+ */
+int svcb_sort(zs_scanner_t *scanner, uint8_t *rdata_end);
+
+/*!
+ * \brief Final check of a sorted SVCB record.
+ *
+ * \param scanner Scanner context.
+ * \param rdata_end Current end of the output data.
+ *
+ * \return ZS_*.
+ */
+int svcb_check(zs_scanner_t *scanner, uint8_t *rdata_end);
+
+/*! @} */