/usr/include/libknot/rdata.h is in libknot-dev 2.6.5-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | /* Copyright (C) 2014 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 <http://www.gnu.org/licenses/>.
*/
/*!
* \file
*
* \brief API for manipulating RRs.
*
* \addtogroup libknot
* @{
*/
#pragma once
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
/* ---------------------------- Single RR ----------------------------------- */
/*!< \brief Maximum rdata data size. */
#define MAX_RDLENGTH 65535
/*!
* \brief knot_rdata_t Array holding single RR payload, i.e. TTL, RDLENGTH and RDATA.
*/
typedef uint8_t knot_rdata_t;
/* ------------------------------- Init ------------------------------------- */
/*!
* \brief Inits knot_rdata_t structure - the structure has to be created using
* knot_rdata_array_size.
*/
void knot_rdata_init(knot_rdata_t *rdata,
uint16_t rdlen, const uint8_t *data, uint32_t ttl);
/* ------------------------- RR getters/setters ----------------------------- */
/*!
* \brief Returns RDATA size of single RR.
* \param rr RR whose size we want.
* \return RR size.
*/
uint16_t knot_rdata_rdlen(const knot_rdata_t *rr);
/*!
* \brief Sets size for given RR.
* \param rr RR whose size we want to set.
* \param size Size to be set.
*/
void knot_rdata_set_rdlen(knot_rdata_t *rr, uint16_t size);
/*!
* \brief Returns TTL of single RR.
* \param rr RR whose TTL we want.
* \return RR TTL.
*/
uint32_t knot_rdata_ttl(const knot_rdata_t *rr);
/*!
* \brief Sets TTL for given RR.
* \param rr RR whose TTL we want to set.
* \param ttl TTL to be set.
*/
void knot_rdata_set_ttl(knot_rdata_t *rr, uint32_t ttl);
/*!
* \brief Returns pointer to RR data.
* \param rr RR whose data we want.
* \return RR data pointer.
*/
uint8_t *knot_rdata_data(const knot_rdata_t *rr);
/* ----------------------------- RR misc ------------------------------------ */
/*!
* \brief Returns actual size of RR structure for given RDATA size.
* \param size RDATA size.
* \return Actual structure size.
*/
size_t knot_rdata_array_size(uint16_t size);
/*!
* \brief Canonical comparison of two RRs. Both RRs *must* exist.
* TTLs are *not* compared.
* \param rr1 First RR to compare.
* \param rr2 Second RR to compare.
* \retval 0 if rr1 == rr2.
* \retval < 0 if rr1 < rr2.
* \retval > 0 if rr1 > rr2.
*/
int knot_rdata_cmp(const knot_rdata_t *rr1, const knot_rdata_t *rr2);
/*! @} */
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