171 lines
4 KiB
Text
171 lines
4 KiB
Text
/*
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* Error message information
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*
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* Copyright The Mbed TLS Contributors
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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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#include "common.h"
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#include "mbedtls/error.h"
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#if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
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#if defined(MBEDTLS_ERROR_C)
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#include "mbedtls/platform.h"
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#include <stdio.h>
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#include <string.h>
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HEADER_INCLUDED
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const char *mbedtls_high_level_strerr(int error_code)
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{
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int high_level_error_code;
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if (error_code < 0) {
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error_code = -error_code;
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}
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/* Extract the high-level part from the error code. */
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high_level_error_code = error_code & 0xFF80;
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switch (high_level_error_code) {
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/* Begin Auto-Generated Code. */
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HIGH_LEVEL_CODE_CHECKS
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/* End Auto-Generated Code. */
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default:
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break;
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}
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return NULL;
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}
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const char *mbedtls_low_level_strerr(int error_code)
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{
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int low_level_error_code;
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if (error_code < 0) {
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error_code = -error_code;
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}
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/* Extract the low-level part from the error code. */
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low_level_error_code = error_code & ~0xFF80;
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switch (low_level_error_code) {
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/* Begin Auto-Generated Code. */
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LOW_LEVEL_CODE_CHECKS
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/* End Auto-Generated Code. */
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default:
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break;
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}
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return NULL;
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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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size_t len;
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int use_ret;
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const char *high_level_error_description = NULL;
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const char *low_level_error_description = NULL;
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if (buflen == 0) {
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return;
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}
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memset(buf, 0x00, buflen);
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if (ret < 0) {
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ret = -ret;
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}
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if (ret & 0xFF80) {
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use_ret = ret & 0xFF80;
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// Translate high level error code.
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high_level_error_description = mbedtls_high_level_strerr(ret);
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if (high_level_error_description == NULL) {
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mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", (unsigned int) use_ret);
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} else {
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mbedtls_snprintf(buf, buflen, "%s", high_level_error_description);
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}
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#if defined(MBEDTLS_SSL_TLS_C)
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// Early return in case of a fatal error - do not try to translate low
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// level code.
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if (use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE)) {
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return;
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}
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#endif /* MBEDTLS_SSL_TLS_C */
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}
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use_ret = ret & ~0xFF80;
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if (use_ret == 0) {
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return;
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}
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// If high level code is present, make a concatenation between both
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// error strings.
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//
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len = strlen(buf);
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if (len > 0) {
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if (buflen - len < 5) {
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return;
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}
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mbedtls_snprintf(buf + len, buflen - len, " : ");
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buf += len + 3;
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buflen -= len + 3;
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}
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// Translate low level error code.
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low_level_error_description = mbedtls_low_level_strerr(ret);
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if (low_level_error_description == NULL) {
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mbedtls_snprintf(buf, buflen, "UNKNOWN ERROR CODE (%04X)", (unsigned int) use_ret);
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} else {
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mbedtls_snprintf(buf, buflen, "%s", low_level_error_description);
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}
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}
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#else /* MBEDTLS_ERROR_C */
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/*
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* Provide a dummy implementation when 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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}
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#endif /* MBEDTLS_ERROR_C */
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#if defined(MBEDTLS_TEST_HOOKS)
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void (*mbedtls_test_hook_error_add)(int, int, const char *, int);
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#endif
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#endif /* MBEDTLS_ERROR_C || MBEDTLS_ERROR_STRERROR_DUMMY */
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