kopia lustrzana https://github.com/micropython/micropython
166 wiersze
4.1 KiB
Plaintext
166 wiersze
4.1 KiB
Plaintext
/*
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* Error message information
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
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#include "mbedtls/error.h"
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#include <string.h>
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#define mbedtls_snprintf snprintf
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#define mbedtls_time_t time_t
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#endif
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#if defined(MBEDTLS_ERROR_C)
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#include <stdio.h>
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HEADER_INCLUDED
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// Error code table type
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struct ssl_errs {
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int16_t errnum;
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const char *errstr;
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};
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// Table of high level error codes
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static const struct ssl_errs mbedtls_high_level_error_tab[] = {
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// BEGIN generated code
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HIGH_LEVEL_CODE_CHECKS
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// END generated code
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};
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static const struct ssl_errs mbedtls_low_level_error_tab[] = {
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// Low level error codes
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//
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// BEGIN generated code
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LOW_LEVEL_CODE_CHECKS
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// END generated code
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};
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static const char *mbedtls_err_prefix = "MBEDTLS_ERR_";
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#define MBEDTLS_ERR_PREFIX_LEN ( sizeof("MBEDTLS_ERR_")-1 )
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// copy error text into buffer, ensure null termination, return strlen of result
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static size_t mbedtls_err_to_str(int err, const struct ssl_errs tab[], int tab_len, char *buf, size_t buflen) {
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if (buflen == 0) return 0;
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// prefix for all error names
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strncpy(buf, mbedtls_err_prefix, buflen);
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if (buflen <= MBEDTLS_ERR_PREFIX_LEN+1) {
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buf[buflen-1] = 0;
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return buflen-1;
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}
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// append error name from table
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for (int i = 0; i < tab_len; i++) {
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if (tab[i].errnum == err) {
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strncpy(buf+MBEDTLS_ERR_PREFIX_LEN, tab[i].errstr, buflen-MBEDTLS_ERR_PREFIX_LEN);
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buf[buflen-1] = 0;
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return strlen(buf);
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}
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}
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mbedtls_snprintf(buf+MBEDTLS_ERR_PREFIX_LEN, buflen-MBEDTLS_ERR_PREFIX_LEN, "UNKNOWN (0x%04X)",
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err);
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return strlen(buf);
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}
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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void mbedtls_strerror(int ret, char *buf, size_t buflen) {
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int use_ret;
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if (buflen == 0) return;
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buf[buflen-1] = 0;
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if (ret < 0) ret = -ret;
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//
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// High-level error codes
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//
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uint8_t got_hl = (ret & 0xFF80) != 0;
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if (got_hl) {
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use_ret = ret & 0xFF80;
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// special case
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#if defined(MBEDTLS_SSL_TLS_C)
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if (use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE)) {
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strncpy(buf, "MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE", buflen);
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buf[buflen-1] = 0;
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return;
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}
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#endif
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size_t len = mbedtls_err_to_str(use_ret, mbedtls_high_level_error_tab,
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ARRAY_SIZE(mbedtls_high_level_error_tab), buf, buflen);
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buf += len;
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buflen -= len;
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if (buflen == 0) return;
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}
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//
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// Low-level error codes
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//
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use_ret = ret & ~0xFF80;
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if (use_ret == 0) return;
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// If high level code is present, make a concatenation between both error strings.
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if (got_hl) {
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if (buflen < 2) return;
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*buf++ = '+';
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buflen--;
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}
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mbedtls_err_to_str(use_ret, mbedtls_low_level_error_tab,
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ARRAY_SIZE(mbedtls_low_level_error_tab), buf, buflen);
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}
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#else /* MBEDTLS_ERROR_C */
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#if defined(MBEDTLS_ERROR_STRERROR_DUMMY)
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/*
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* Provide an non-function in case MBEDTLS_ERROR_C is not defined
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*/
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void mbedtls_strerror( int ret, char *buf, size_t buflen )
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{
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((void) ret);
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if( buflen > 0 )
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buf[0] = '\0';
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}
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#endif /* MBEDTLS_ERROR_STRERROR_DUMMY */
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#endif /* MBEDTLS_ERROR_C */
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