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Diffstat (limited to 'src/libknot/errcode.h')
| -rw-r--r-- | src/libknot/errcode.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/libknot/errcode.h b/src/libknot/errcode.h new file mode 100644 index 0000000..2fd1cea --- /dev/null +++ b/src/libknot/errcode.h @@ -0,0 +1,203 @@ +/* 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); +} + +/*! @} */ |