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/* Copyright (C) 2023 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 RRSet from/to wire conversion functions.
*
* \addtogroup wire
* @{
*/
#pragma once
#include "libknot/rrset.h"
#include "libknot/packet/compr.h"
/*!
* \brief Write RR Set content to a wire.
*
* \param rrset RRSet to be converted.
* \param wire Output wire buffer.
* \param max_size Capacity of wire buffer.
* \param rotate Rotate the RR order by this count.
* \param compr Compression context.
* \param flags Flags; currently only KNOT_PF_TTL_ORIG is accepted.
*
* \return Output size, negative number on error (KNOT_E*).
*/
int knot_rrset_to_wire_extra(const knot_rrset_t *rrset, uint8_t *wire,
uint32_t max_size, uint16_t rotate,
knot_compr_t *compr, uint16_t flags);
/*! \brief Same as knot_rrset_to_wire_extra but without rrset rotation and flags. */
static inline int knot_rrset_to_wire(const knot_rrset_t *rrset, uint8_t *wire,
uint32_t max_size, knot_compr_t *compr)
{
return knot_rrset_to_wire_extra(rrset, wire, max_size, 0, compr, 0);
}
/*!
* \brief Creates one RR from wire, stores it into \a rrset.
*
* \param wire Source wire (the whole packet).
* \param pos Position in \a wire where to start parsing.
* \param max_size Total size of data in \a wire (size of the packet).
* \param rrset Destination RRSet.
* \param mm Memory context.
* \param canonical Convert rrset to canonical format indication.
*
* \return KNOT_E*
*/
int knot_rrset_rr_from_wire(const uint8_t *wire, size_t *pos, size_t max_size,
knot_rrset_t *rrset, knot_mm_t *mm, bool canonical);
/*! @} */
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