| 1 | /** |
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| 2 | * \file error.h |
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| 3 | * |
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| 4 | * \brief Error to string translation |
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| 5 | * |
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| 6 | * Copyright (C) 2006-2010, Brainspark B.V. |
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| 7 | * |
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| 8 | * This file is part of PolarSSL (http://www.polarssl.org) |
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| 9 | * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
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| 10 | * |
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| 11 | * All rights reserved. |
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| 12 | * |
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| 13 | * This program is free software; you can redistribute it and/or modify |
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| 14 | * it under the terms of the GNU General Public License as published by |
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| 15 | * the Free Software Foundation; either version 2 of the License, or |
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| 16 | * (at your option) any later version. |
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| 17 | * |
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| 18 | * This program is distributed in the hope that it will be useful, |
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | * GNU General Public License for more details. |
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| 22 | * |
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| 23 | * You should have received a copy of the GNU General Public License along |
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| 24 | * with this program; if not, write to the Free Software Foundation, Inc., |
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| 25 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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| 26 | */ |
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| 27 | #ifndef POLARSSL_ERROR_H |
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| 28 | #define POLARSSL_ERROR_H |
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| 29 | |
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| 30 | /** |
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| 31 | * Error code layout. |
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| 32 | * |
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| 33 | * Currently we try to keep all error codes within the negative space of 16 |
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| 34 | * bytes signed integers to support all platforms (-0x0000 - -0x8000). In |
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| 35 | * addition we'd like to give two layers of information on the error if |
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| 36 | * possible. |
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| 37 | * |
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| 38 | * For that purpose the error codes are segmented in the following manner: |
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| 39 | * |
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| 40 | * 16 bit error code bit-segmentation |
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| 41 | * |
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| 42 | * 1 bit - Intentionally not used |
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| 43 | * 3 bits - High level module ID |
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| 44 | * 5 bits - Module-dependent error code |
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| 45 | * 6 bits - Low level module errors |
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| 46 | * 1 bit - Intentionally not used |
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| 47 | * |
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| 48 | * Low-level module errors (0x007E-0x0002) |
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| 49 | * |
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| 50 | * Module Nr Codes assigned |
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| 51 | * MPI 7 0x0002-0x0010 |
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| 52 | * GCM 2 0x0012-0x0014 |
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| 53 | * AES 2 0x0020-0x0022 |
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| 54 | * CAMELLIA 2 0x0024-0x0026 |
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| 55 | * XTEA 1 0x0028-0x0028 |
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| 56 | * BASE64 2 0x002A-0x002C |
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| 57 | * PADLOCK 1 0x0030-0x0030 |
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| 58 | * DES 1 0x0032-0x0032 |
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| 59 | * CTR_DBRG 3 0x0034-0x003A |
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| 60 | * ENTROPY 3 0x003C-0x0040 |
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| 61 | * NET 11 0x0042-0x0056 |
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| 62 | * ASN1 7 0x0060-0x006C |
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| 63 | * MD2 1 0x0070-0x0070 |
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| 64 | * MD4 1 0x0072-0x0072 |
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| 65 | * MD5 1 0x0074-0x0074 |
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| 66 | * SHA1 1 0x0076-0x0076 |
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| 67 | * SHA2 1 0x0078-0x0078 |
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| 68 | * SHA4 1 0x007A-0x007A |
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| 69 | * |
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| 70 | * High-level module nr (3 bits - 0x1...-0x8...) |
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| 71 | * Name ID Nr of Errors |
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| 72 | * PEM 1 8 |
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| 73 | * X509 2 21 |
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| 74 | * DHM 3 6 |
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| 75 | * RSA 4 9 |
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| 76 | * MD 5 4 |
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| 77 | * CIPHER 6 5 |
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| 78 | * SSL 6 1 (Started from top) |
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| 79 | * SSL 7 31 |
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| 80 | * |
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| 81 | * Module dependent error code (5 bits 0x.08.-0x.F8.) |
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| 82 | */ |
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| 83 | |
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| 84 | #ifdef __cplusplus |
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| 85 | extern "C" { |
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| 86 | #endif |
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| 87 | |
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| 88 | /** |
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| 89 | * \brief Translate a PolarSSL error code into a string representation, |
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| 90 | * Result is truncated if necessary and always includes a terminating |
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| 91 | * null byte. |
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| 92 | * |
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| 93 | * \param errnum error code |
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| 94 | * \param buffer buffer to place representation in |
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| 95 | * \param buflen length of the buffer |
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| 96 | */ |
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| 97 | void error_strerror( int errnum, char *buffer, size_t buflen ); |
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| 98 | |
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| 99 | #ifdef __cplusplus |
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| 100 | } |
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| 101 | #endif |
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| 102 | |
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| 103 | #endif /* error.h */ |
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