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/* Copyright (C) 2011 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 exec.h
*
* \author Daniel Salzman <daniel.salzman@nic.cz>
*
* \brief Common executives for utils.
*
* \addtogroup knot_utils
* @{
*/
#ifndef _UTILS__EXEC_H_
#define _UTILS__EXEC_H_
#include "utils/common/netio.h" // net_t
#include "utils/common/params.h" // style_t
#include "libknot/libknot.h"
#include "libknot/dnssec/key.h"
#include "libknot/dnssec/sign.h"
/*! \brief Holds data required between signing and signature verification. */
typedef struct {
knot_tsig_key_t tsig_key;
knot_dnssec_key_t dnssec_key;
uint8_t *digest;
size_t digest_size;
} sign_context_t;
/*!
* \brief Allocates empty packet and sets packet size and random id.
*
* \param max_size Maximal packet size.
*
* \retval packet if success.
* \retval NULL if error.
*/
knot_packet_t* create_empty_packet(const size_t max_size);
/*!
* \brief Prints information header for transfer.
*
* \param packet Parsed packet.
* \param style Style of the output.
*/
void print_header_xfr(const knot_packet_t *packet, const style_t *style);
/*!
* \brief Prints answer section for 1 transfer message.
*
* \param packet Response packet.
* \param style Style of the output.
*/
void print_data_xfr(const knot_packet_t *packet,
const style_t *style);
/*!
* \brief Prints trailing statistics for transfer.
*
* \param total_len Total reply size (all messages).
* \param msg_count Number of messages.
* \param rr_count Total number of answer records.
* \param net Connection information.
* \param elapse Total elapsed time.
* \param style Style of the otput.
*/
void print_footer_xfr(const size_t total_len,
const size_t msg_count,
const size_t rr_count,
const net_t *net,
const float elapsed,
const style_t *style);
/*!
* \brief Prints one response packet.
*
* \param packet Response packet.
* \param total_len Total reply size (all messages).
* \param net Connection information.
* \param elapse Total elapsed time.
* \param incoming Indicates if the packet is input.
* \param style Style of the otput.
*/
void print_packet(const knot_packet_t *packet,
const size_t total_len,
const net_t *net,
const float elapsed,
const bool incoming,
const style_t *style);
/*!
* \brief Cleans up sign context.
*
* \param ctx Sign context.
*/
void free_sign_context(sign_context_t *ctx);
/*!
* \brief Signs outgoing DNS packet.
*
* \param pkt Packet to sign.
* \param sign_ctx Sign context.
* \param key_params Key parameters.
*
* \retval KNOT_EOK if success.
* \retval error code if error.
*/
int sign_packet(knot_packet_t *pkt,
sign_context_t *sign_ctx,
const knot_key_params_t *key_params);
/*!
* \brief Verifies signature for incoming DNS packet.
*
* \param pkt Packet verify sign.
* \param sign_ctx Sign context.
* \param key_params Key parameters.
*
* \retval KNOT_EOK if success.
* \retval error code if error.
*/
int verify_packet(const knot_packet_t *pkt,
const sign_context_t *sign_ctx,
const knot_key_params_t *key_params);
#endif // _UTILS__EXEC_H_
/*! @} */
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