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/* Copyright (C) 2018 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 Knot error codes.
*
* \addtogroup libknot
* @{
*/
#pragma once
#include <errno.h>
/*! \brief Error codes used in the library. */
enum knot_error {
KNOT_EOK = 0,
/* Directly mapped error codes. */
KNOT_ENOMEM = -ENOMEM,
KNOT_EINVAL = -EINVAL,
KNOT_ENOTSUP = -ENOTSUP,
KNOT_EBUSY = -EBUSY,
KNOT_EAGAIN = -EAGAIN,
KNOT_EACCES = -EACCES,
KNOT_ECONNREFUSED = -ECONNREFUSED,
KNOT_EISCONN = -EISCONN,
KNOT_EADDRINUSE = -EADDRINUSE,
KNOT_ENOENT = -ENOENT,
KNOT_EEXIST = -EEXIST,
KNOT_ERANGE = -ERANGE,
KNOT_EADDRNOTAVAIL = -EADDRNOTAVAIL,
KNOT_ERROR_MIN = -1000,
/* General errors. */
KNOT_ERROR = KNOT_ERROR_MIN,
KNOT_EPARSEFAIL,
KNOT_ESEMCHECK,
KNOT_EUPTODATE,
KNOT_EFEWDATA,
KNOT_ESPACE,
KNOT_EMALF,
KNOT_ENSEC3PAR,
KNOT_ENSEC3CHAIN,
KNOT_EOUTOFZONE,
KNOT_EZONEINVAL,
KNOT_ENOZONE,
KNOT_ENONODE,
KNOT_ENORECORD,
KNOT_ENOMASTER,
KNOT_EPREREQ,
KNOT_ETTL,
KNOT_ENOXFR,
KNOT_EDENIED,
KNOT_ECONN,
KNOT_ETIMEOUT,
KNOT_ENODIFF,
KNOT_ENOTSIG,
KNOT_ELIMIT,
KNOT_EZONESIZE,
KNOT_EOF,
KNOT_ESYSTEM,
KNOT_EFILE,
KNOT_ESOAINVAL,
KNOT_ETRAIL,
/* Control states. */
KNOT_CTL_ESTOP,
/* Network errors. */
KNOT_NET_EADDR,
KNOT_NET_ESOCKET,
KNOT_NET_ECONNECT,
KNOT_NET_ESEND,
KNOT_NET_ERECV,
KNOT_NET_ETIMEOUT,
/* Encoding errors. */
KNOT_BASE64_ESIZE,
KNOT_BASE64_ECHAR,
KNOT_BASE32HEX_ESIZE,
KNOT_BASE32HEX_ECHAR,
/* TSIG errors. */
KNOT_TSIG_EBADSIG,
KNOT_TSIG_EBADKEY,
KNOT_TSIG_EBADTIME,
KNOT_TSIG_EBADTRUNC,
/* DNSSEC errors. */
KNOT_DNSSEC_EMISSINGKEYTYPE,
KNOT_DNSSEC_ENOKEY,
/* Yparser errors. */
KNOT_YP_ECHAR_TAB,
KNOT_YP_EINVAL_ITEM,
KNOT_YP_EINVAL_ID,
KNOT_YP_EINVAL_DATA,
KNOT_YP_EINVAL_INDENT,
KNOT_YP_ENOTSUP_DATA,
KNOT_YP_ENOTSUP_ID,
KNOT_YP_ENODATA,
KNOT_YP_ENOID,
/* Configuration errors. */
KNOT_CONF_ENOTINIT,
KNOT_CONF_EVERSION,
KNOT_CONF_EREDEFINE,
/* Transaction errors. */
KNOT_TXN_EEXISTS,
KNOT_TXN_ENOTEXISTS,
/* Processing error. */
KNOT_LAYER_ERROR,
/* DNSSEC errors. */
KNOT_INVALID_PUBLIC_KEY,
KNOT_INVALID_PRIVATE_KEY,
KNOT_INVALID_KEY_ALGORITHM,
KNOT_INVALID_KEY_SIZE,
KNOT_INVALID_KEY_ID,
KNOT_INVALID_KEY_NAME,
KNOT_NO_PUBLIC_KEY,
KNOT_NO_PRIVATE_KEY,
KNOT_ERROR_MAX = -501
};
/*!
* \brief Map POSIX errno code to Knot error code.
*
* \param code Errno code to transform (set -1 to use the current errno).
*
* \return Mapped errno or KNOT_ERROR if unknown.
*/
inline static int knot_map_errno_code(int code)
{
if (code < 0) {
code = errno;
}
typedef struct {
int errno_code;
int libknot_code;
} err_table_t;
#define ERR_ITEM(name) { name, KNOT_##name }
static const err_table_t errno_to_errcode[] = {
ERR_ITEM(ENOMEM),
ERR_ITEM(EINVAL),
ERR_ITEM(ENOTSUP),
ERR_ITEM(EBUSY),
ERR_ITEM(EAGAIN),
ERR_ITEM(EACCES),
ERR_ITEM(ECONNREFUSED),
ERR_ITEM(EISCONN),
ERR_ITEM(EADDRINUSE),
ERR_ITEM(ENOENT),
ERR_ITEM(EEXIST),
ERR_ITEM(ERANGE),
ERR_ITEM(EADDRNOTAVAIL),
/* Terminator - default value. */
{ 0, KNOT_ERROR }
};
#undef ERR_ITEM
const err_table_t *err = errno_to_errcode;
while (err->errno_code != 0 && err->errno_code != code) {
err++;
}
return err->libknot_code;
}
/*!
* \brief Get a POSIX errno mapped to Knot error code.
*
* \return Mapped errno or KNOT_ERROR if unknown.
*/
inline static int knot_map_errno(void)
{
return knot_map_errno_code(-1);
}
/*! @} */
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