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Diffstat (limited to '')
| -rw-r--r-- | src/libzscanner/functions.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/libzscanner/functions.h b/src/libzscanner/functions.h new file mode 100644 index 0000000..5f996fc --- /dev/null +++ b/src/libzscanner/functions.h @@ -0,0 +1,141 @@ +/* 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); + +/*! @} */ |