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117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/**
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* \file error.h
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*
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* \brief Error to string translation
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*
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* Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_ERROR_H
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#define POLARSSL_ERROR_H
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#include <stddef.h>
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/**
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* Error code layout.
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*
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* Currently we try to keep all error codes within the negative space of 16
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* bytes signed integers to support all platforms (-0x0000 - -0x8000). In
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* addition we'd like to give two layers of information on the error if
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* possible.
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*
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* For that purpose the error codes are segmented in the following manner:
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*
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* 16 bit error code bit-segmentation
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*
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* 1 bit - Sign bit
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* 3 bits - High level module ID
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* 5 bits - Module-dependent error code
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* 7 bits - Low level module errors
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*
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* For historical reasons, low-level error codes are divided in even and odd,
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* even codes were assigned first, and -1 is reserved for other errors.
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*
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* Low-level module errors (0x0002-0x007E, 0x0003-0x007F)
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*
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* Module Nr Codes assigned
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* MPI 7 0x0002-0x0010
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* GCM 2 0x0012-0x0014
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* BLOWFISH 2 0x0016-0x0018
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* THREADING 3 0x001A-0x001E
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* AES 2 0x0020-0x0022
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* CAMELLIA 2 0x0024-0x0026
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* XTEA 1 0x0028-0x0028
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* BASE64 2 0x002A-0x002C
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* OID 1 0x002E-0x002E 0x000B-0x000B
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* PADLOCK 1 0x0030-0x0030
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* DES 1 0x0032-0x0032
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* CTR_DBRG 4 0x0034-0x003A
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* ENTROPY 3 0x003C-0x0040
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* NET 12 0x0042-0x0056 0x0011-0x0011
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* ENTROPY 1 0x0058-0x0058
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* ASN1 7 0x0060-0x006C
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* MD2 1 0x0070-0x0070
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* MD4 1 0x0072-0x0072
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* MD5 1 0x0074-0x0074
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* SHA1 1 0x0076-0x0076
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* SHA256 1 0x0078-0x0078
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* SHA512 1 0x007A-0x007A
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* PBKDF2 1 0x007C-0x007C
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* RIPEMD160 1 0x007E-0x007E
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* HMAC_DRBG 4 0x0003-0x0009
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* CCM 2 0x000D-0x000F
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*
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* High-level module nr (3 bits - 0x0...-0x7...)
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* Name ID Nr of Errors
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* PEM 1 9
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* PKCS#12 1 4 (Started from top)
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* X509 2 18
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* PK 2 14 (Started from top, plus 0x2000)
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* DHM 3 9
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* PKCS5 3 4 (Started from top)
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* RSA 4 9
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* ECP 4 8 (Started from top)
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* MD 5 4
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* CIPHER 6 6
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* SSL 6 13 (Started from top)
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* SSL 7 31
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*
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* Module dependent error code (5 bits 0x.00.-0x.F8.)
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Translate a mbed TLS error code into a string representation,
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* Result is truncated if necessary and always includes a terminating
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* null byte.
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*
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* \param errnum error code
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* \param buffer buffer to place representation in
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* \param buflen length of the buffer
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*/
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void polarssl_strerror( int errnum, char *buffer, size_t buflen );
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#ifdef __cplusplus
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}
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#endif
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#endif /* error.h */
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