/** * \file error.h * * \brief Error to string translation */ /* * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later */ #ifndef MBEDTLS_ERROR_H #define MBEDTLS_ERROR_H #include "mbedtls/build_info.h" #include <stddef.h> /** * Error code layout. * * Currently we try to keep all error codes within the negative space of 16 * bits signed integers to support all platforms (-0x0001 - -0x7FFF). In * addition we'd like to give two layers of information on the error if * possible. * * For that purpose the error codes are segmented in the following manner: * * 16 bit error code bit-segmentation * * 1 bit - Unused (sign bit) * 3 bits - High level module ID * 5 bits - Module-dependent error code * 7 bits - Low level module errors * * For historical reasons, low-level error codes are divided in even and odd, * even codes were assigned first, and -1 is reserved for other errors. * * Low-level module errors (0x0002-0x007E, 0x0001-0x007F) * * Module Nr Codes assigned * ERROR 2 0x006E 0x0001 * MPI 7 0x0002-0x0010 * GCM 3 0x0012-0x0016 0x0013-0x0013 * THREADING 3 0x001A-0x001E * AES 5 0x0020-0x0022 0x0021-0x0025 * CAMELLIA 3 0x0024-0x0026 0x0027-0x0027 * BASE64 2 0x002A-0x002C * OID 1 0x002E-0x002E 0x000B-0x000B * PADLOCK 1 0x0030-0x0030 * DES 2 0x0032-0x0032 0x0033-0x0033 * CTR_DBRG 4 0x0034-0x003A * ENTROPY 3 0x003C-0x0040 0x003D-0x003F * NET 13 0x0042-0x0052 0x0043-0x0049 * ARIA 4 0x0058-0x005E * ASN1 7 0x0060-0x006C * CMAC 1 0x007A-0x007A * PBKDF2 1 0x007C-0x007C * HMAC_DRBG 4 0x0003-0x0009 * CCM 3 0x000D-0x0011 * MD5 1 0x002F-0x002F * RIPEMD160 1 0x0031-0x0031 * SHA1 1 0x0035-0x0035 0x0073-0x0073 * SHA256 1 0x0037-0x0037 0x0074-0x0074 * SHA512 1 0x0039-0x0039 0x0075-0x0075 * SHA-3 1 0x0076-0x0076 * CHACHA20 3 0x0051-0x0055 * POLY1305 3 0x0057-0x005B * CHACHAPOLY 2 0x0054-0x0056 * PLATFORM 2 0x0070-0x0072 * LMS 5 0x0011-0x0019 * * High-level module nr (3 bits - 0x0...-0x7...) * Name ID Nr of Errors * PEM 1 9 * PKCS#12 1 4 (Started from top) * X509 2 20 * PKCS5 2 4 (Started from top) * DHM 3 11 * PK 3 15 (Started from top) * RSA 4 11 * ECP 4 10 (Started from top) * MD 5 5 * HKDF 5 1 (Started from top) * PKCS7 5 12 (Started from 0x5300) * SSL 5 2 (Started from 0x5F00) * CIPHER 6 8 (Started from 0x6080) * SSL 6 22 (Started from top, plus 0x6000) * SSL 7 20 (Started from 0x7000, gaps at * 0x7380, 0x7900-0x7980, 0x7A80-0x7E80) * * Module dependent error code (5 bits 0x.00.-0x.F8.) */ #ifdef __cplusplus extern "C" { #endif /** Generic error */ #define MBEDTLS_ERR_ERROR_GENERIC_ERROR … /** This is a bug in the library */ #define MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED … /** Hardware accelerator failed */ #define MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED … /** The requested feature is not supported by the platform */ #define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED … /** * \brief Combines a high-level and low-level error code together. * * Wrapper macro for mbedtls_error_add(). See that function for * more details. */ #define MBEDTLS_ERROR_ADD(high, low) … #if defined(MBEDTLS_TEST_HOOKS) /** * \brief Testing hook called before adding/combining two error codes together. * Only used when invasive testing is enabled via MBEDTLS_TEST_HOOKS. */ extern void (*mbedtls_test_hook_error_add)(int, int, const char *, int); #endif /** * \brief Combines a high-level and low-level error code together. * * This function can be called directly however it is usually * called via the #MBEDTLS_ERROR_ADD macro. * * While a value of zero is not a negative error code, it is still an * error code (that denotes success) and can be combined with both a * negative error code or another value of zero. * * \note When invasive testing is enabled via #MBEDTLS_TEST_HOOKS, also try to * call \link mbedtls_test_hook_error_add \endlink. * * \param high high-level error code. See error.h for more details. * \param low low-level error code. See error.h for more details. * \param file file where this error code addition occurred. * \param line line where this error code addition occurred. */ static inline int mbedtls_error_add(int high, int low, const char *file, int line) { … } /** * \brief Translate an Mbed TLS error code into a string representation. * The result is truncated if necessary and always includes a * terminating null byte. * * \param errnum error code * \param buffer buffer to place representation in * \param buflen length of the buffer */ void mbedtls_strerror(int errnum, char *buffer, size_t buflen); /** * \brief Translate the high-level part of an Mbed TLS error code into a string * representation. * * This function returns a const pointer to an un-modifiable string. The caller * must not try to modify the string. It is intended to be used mostly for * logging purposes. * * \param error_code error code * * \return The string representation of the error code, or \c NULL if the error * code is unknown. */ const char *mbedtls_high_level_strerr(int error_code); /** * \brief Translate the low-level part of an Mbed TLS error code into a string * representation. * * This function returns a const pointer to an un-modifiable string. The caller * must not try to modify the string. It is intended to be used mostly for * logging purposes. * * \param error_code error code * * \return The string representation of the error code, or \c NULL if the error * code is unknown. */ const char *mbedtls_low_level_strerr(int error_code); #ifdef __cplusplus } #endif #endif /* error.h */
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