2015-04-08 17:48:22 +00:00
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/*
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* Debugging routines
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*
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2021-09-11 23:41:25 +00:00
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* Copyright The Mbed TLS Contributors
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2020-07-04 12:47:41 +00:00
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 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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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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2015-04-08 17:48:22 +00:00
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*
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2017-02-26 11:55:27 +00:00
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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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2015-04-08 17:48:22 +00:00
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*
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2017-02-26 11:55:27 +00:00
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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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2015-04-08 17:48:22 +00:00
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*
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2017-02-26 11:55:27 +00:00
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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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2015-04-08 17:48:22 +00:00
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*
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2020-07-04 12:47:41 +00:00
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* **********
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2015-04-08 17:48:22 +00:00
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*/
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2015-10-04 17:08:38 +00:00
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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2015-04-08 17:48:22 +00:00
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#else
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2015-10-04 17:08:38 +00:00
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#include MBEDTLS_CONFIG_FILE
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2015-04-08 17:48:22 +00:00
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#endif
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2015-10-04 17:08:38 +00:00
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#if defined(MBEDTLS_DEBUG_C)
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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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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#include <stdlib.h>
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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2016-07-08 09:44:52 +00:00
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#define mbedtls_time_t time_t
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2015-10-04 17:08:38 +00:00
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#define mbedtls_snprintf snprintf
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2015-04-08 17:48:22 +00:00
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#endif
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2016-07-08 09:44:52 +00:00
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#include "mbedtls/debug.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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2015-10-12 12:47:42 +00:00
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#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
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!defined(inline) && !defined(__cplusplus)
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2015-10-04 17:08:38 +00:00
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#define inline __inline
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2015-04-08 17:48:22 +00:00
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#endif
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2015-10-04 17:08:38 +00:00
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#define DEBUG_BUF_SIZE 512
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2015-04-08 17:48:22 +00:00
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static int debug_threshold = 0;
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2015-10-04 17:08:38 +00:00
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void mbedtls_debug_set_threshold( int threshold )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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debug_threshold = threshold;
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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/*
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* All calls to f_dbg must be made via this function
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*/
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static inline void debug_send_line( const mbedtls_ssl_context *ssl, int level,
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const char *file, int line,
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const char *str )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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/*
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* If in a threaded environment, we need a thread identifier.
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* Since there is no portable way to get one, use the address of the ssl
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* context instead, as it shouldn't be shared between threads.
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*/
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#if defined(MBEDTLS_THREADING_C)
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char idstr[20 + DEBUG_BUF_SIZE]; /* 0x + 16 nibbles + ': ' */
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2017-06-18 17:25:30 +00:00
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mbedtls_snprintf( idstr, sizeof( idstr ), "%p: %s", (void*)ssl, str );
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2015-10-04 17:08:38 +00:00
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ssl->conf->f_dbg( ssl->conf->p_dbg, level, file, line, idstr );
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#else
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ssl->conf->f_dbg( ssl->conf->p_dbg, level, file, line, str );
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#endif
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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void mbedtls_debug_print_msg( const mbedtls_ssl_context *ssl, int level,
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const char *file, int line,
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const char *format, ... )
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2015-04-08 17:48:22 +00:00
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{
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va_list argp;
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2015-10-04 17:08:38 +00:00
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char str[DEBUG_BUF_SIZE];
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int ret;
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2019-06-27 09:04:40 +00:00
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if( NULL == ssl ||
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NULL == ssl->conf ||
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NULL == ssl->conf->f_dbg ||
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level > debug_threshold )
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{
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2015-10-04 17:08:38 +00:00
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return;
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2019-06-27 09:04:40 +00:00
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}
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2015-04-08 17:48:22 +00:00
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va_start( argp, format );
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2015-10-04 17:08:38 +00:00
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#if defined(_WIN32)
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2018-10-31 15:00:34 +00:00
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#if defined(_TRUNCATE) && !defined(__MINGW32__)
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2015-10-04 17:08:38 +00:00
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ret = _vsnprintf_s( str, DEBUG_BUF_SIZE, _TRUNCATE, format, argp );
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#else
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ret = _vsnprintf( str, DEBUG_BUF_SIZE, format, argp );
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if( ret < 0 || (size_t) ret == DEBUG_BUF_SIZE )
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{
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str[DEBUG_BUF_SIZE-1] = '\0';
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ret = -1;
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}
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#endif
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#else
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ret = vsnprintf( str, DEBUG_BUF_SIZE, format, argp );
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#endif
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2015-04-08 17:48:22 +00:00
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va_end( argp );
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2015-10-04 17:08:38 +00:00
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if( ret >= 0 && ret < DEBUG_BUF_SIZE - 1 )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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str[ret] = '\n';
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str[ret + 1] = '\0';
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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debug_send_line( ssl, level, file, line, str );
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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void mbedtls_debug_print_ret( const mbedtls_ssl_context *ssl, int level,
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2015-04-08 17:48:22 +00:00
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const char *file, int line,
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const char *text, int ret )
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{
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2015-10-04 17:08:38 +00:00
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char str[DEBUG_BUF_SIZE];
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2015-04-08 17:48:22 +00:00
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2019-06-27 09:04:40 +00:00
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if( NULL == ssl ||
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NULL == ssl->conf ||
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NULL == ssl->conf->f_dbg ||
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level > debug_threshold )
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{
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2015-04-08 17:48:22 +00:00
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return;
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2019-06-27 09:04:40 +00:00
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}
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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/*
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* With non-blocking I/O and examples that just retry immediately,
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* the logs would be quickly flooded with WANT_READ, so ignore that.
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* Don't ignore WANT_WRITE however, since is is usually rare.
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*/
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if( ret == MBEDTLS_ERR_SSL_WANT_READ )
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return;
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str, sizeof( str ), "%s() returned %d (-0x%04x)\n",
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2015-04-08 17:48:22 +00:00
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text, ret, -ret );
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2015-10-04 17:08:38 +00:00
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debug_send_line( ssl, level, file, line, str );
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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void mbedtls_debug_print_buf( const mbedtls_ssl_context *ssl, int level,
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2015-04-08 17:48:22 +00:00
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const char *file, int line, const char *text,
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2015-10-04 17:08:38 +00:00
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const unsigned char *buf, size_t len )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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char str[DEBUG_BUF_SIZE];
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2015-04-08 17:48:22 +00:00
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char txt[17];
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2015-10-04 17:08:38 +00:00
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size_t i, idx = 0;
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2015-04-08 17:48:22 +00:00
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2019-06-27 09:04:40 +00:00
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if( NULL == ssl ||
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NULL == ssl->conf ||
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NULL == ssl->conf->f_dbg ||
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level > debug_threshold )
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{
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2015-04-08 17:48:22 +00:00
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return;
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2019-06-27 09:04:40 +00:00
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}
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str + idx, sizeof( str ) - idx, "dumping '%s' (%u bytes)\n",
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2015-04-08 17:48:22 +00:00
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text, (unsigned int) len );
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2015-10-04 17:08:38 +00:00
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debug_send_line( ssl, level, file, line, str );
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2015-04-08 17:48:22 +00:00
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idx = 0;
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memset( txt, 0, sizeof( txt ) );
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for( i = 0; i < len; i++ )
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{
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if( i >= 4096 )
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break;
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if( i % 16 == 0 )
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{
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if( i > 0 )
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{
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %s\n", txt );
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debug_send_line( ssl, level, file, line, str );
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2015-04-08 17:48:22 +00:00
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idx = 0;
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memset( txt, 0, sizeof( txt ) );
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}
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2015-10-04 17:08:38 +00:00
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idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, "%04x: ",
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2015-04-08 17:48:22 +00:00
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(unsigned int) i );
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}
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2015-10-04 17:08:38 +00:00
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idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %02x",
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2015-04-08 17:48:22 +00:00
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(unsigned int) buf[i] );
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txt[i % 16] = ( buf[i] > 31 && buf[i] < 127 ) ? buf[i] : '.' ;
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}
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if( len > 0 )
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{
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for( /* i = i */; i % 16 != 0; i++ )
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2015-10-04 17:08:38 +00:00
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idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " " );
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %s\n", txt );
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debug_send_line( ssl, level, file, line, str );
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2015-04-08 17:48:22 +00:00
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}
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}
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2015-10-04 17:08:38 +00:00
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#if defined(MBEDTLS_ECP_C)
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void mbedtls_debug_print_ecp( const mbedtls_ssl_context *ssl, int level,
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2015-04-08 17:48:22 +00:00
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const char *file, int line,
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2015-10-04 17:08:38 +00:00
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const char *text, const mbedtls_ecp_point *X )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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char str[DEBUG_BUF_SIZE];
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2015-04-08 17:48:22 +00:00
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2019-06-27 09:04:40 +00:00
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if( NULL == ssl ||
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NULL == ssl->conf ||
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NULL == ssl->conf->f_dbg ||
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level > debug_threshold )
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{
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2015-04-08 17:48:22 +00:00
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return;
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2019-06-27 09:04:40 +00:00
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}
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str, sizeof( str ), "%s(X)", text );
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mbedtls_debug_print_mpi( ssl, level, file, line, str, &X->X );
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str, sizeof( str ), "%s(Y)", text );
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mbedtls_debug_print_mpi( ssl, level, file, line, str, &X->Y );
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2015-04-08 17:48:22 +00:00
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}
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2015-10-04 17:08:38 +00:00
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#endif /* MBEDTLS_ECP_C */
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2015-04-08 17:48:22 +00:00
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2015-10-04 17:08:38 +00:00
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#if defined(MBEDTLS_BIGNUM_C)
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void mbedtls_debug_print_mpi( const mbedtls_ssl_context *ssl, int level,
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2015-04-08 17:48:22 +00:00
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const char *file, int line,
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2015-10-04 17:08:38 +00:00
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const char *text, const mbedtls_mpi *X )
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2015-04-08 17:48:22 +00:00
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{
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2015-10-04 17:08:38 +00:00
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char str[DEBUG_BUF_SIZE];
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int j, k, zeros = 1;
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2015-04-08 17:48:22 +00:00
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size_t i, n, idx = 0;
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2019-06-27 09:04:40 +00:00
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if( NULL == ssl ||
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NULL == ssl->conf ||
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NULL == ssl->conf->f_dbg ||
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NULL == X ||
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level > debug_threshold )
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{
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2015-04-08 17:48:22 +00:00
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return;
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2019-06-27 09:04:40 +00:00
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}
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2015-04-08 17:48:22 +00:00
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for( n = X->n - 1; n > 0; n-- )
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if( X->p[n] != 0 )
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break;
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2015-10-04 17:08:38 +00:00
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for( j = ( sizeof(mbedtls_mpi_uint) << 3 ) - 1; j >= 0; j-- )
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2015-04-08 17:48:22 +00:00
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if( ( ( X->p[n] >> j ) & 1 ) != 0 )
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break;
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2015-10-04 17:08:38 +00:00
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mbedtls_snprintf( str + idx, sizeof( str ) - idx, "value of '%s' (%d bits) is:\n",
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text, (int) ( ( n * ( sizeof(mbedtls_mpi_uint) << 3 ) ) + j + 1 ) );
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
debug_send_line( ssl, level, file, line, str );
|
2015-04-08 17:48:22 +00:00
|
|
|
|
|
|
|
idx = 0;
|
|
|
|
for( i = n + 1, j = 0; i > 0; i-- )
|
|
|
|
{
|
|
|
|
if( zeros && X->p[i - 1] == 0 )
|
|
|
|
continue;
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
for( k = sizeof( mbedtls_mpi_uint ) - 1; k >= 0; k-- )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
|
|
|
if( zeros && ( ( X->p[i - 1] >> ( k << 3 ) ) & 0xFF ) == 0 )
|
|
|
|
continue;
|
|
|
|
else
|
|
|
|
zeros = 0;
|
|
|
|
|
|
|
|
if( j % 16 == 0 )
|
|
|
|
{
|
|
|
|
if( j > 0 )
|
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
|
|
|
|
debug_send_line( ssl, level, file, line, str );
|
2015-04-08 17:48:22 +00:00
|
|
|
idx = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " %02x", (unsigned int)
|
2015-04-08 17:48:22 +00:00
|
|
|
( X->p[i - 1] >> ( k << 3 ) ) & 0xFF );
|
|
|
|
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if( zeros == 1 )
|
2015-10-04 17:08:38 +00:00
|
|
|
idx += mbedtls_snprintf( str + idx, sizeof( str ) - idx, " 00" );
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_snprintf( str + idx, sizeof( str ) - idx, "\n" );
|
|
|
|
debug_send_line( ssl, level, file, line, str );
|
2015-04-08 17:48:22 +00:00
|
|
|
}
|
2015-10-04 17:08:38 +00:00
|
|
|
#endif /* MBEDTLS_BIGNUM_C */
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C)
|
|
|
|
static void debug_print_pk( const mbedtls_ssl_context *ssl, int level,
|
2015-04-08 17:48:22 +00:00
|
|
|
const char *file, int line,
|
2015-10-04 17:08:38 +00:00
|
|
|
const char *text, const mbedtls_pk_context *pk )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
|
|
|
size_t i;
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_pk_debug_item items[MBEDTLS_PK_DEBUG_MAX_ITEMS];
|
2015-04-08 17:48:22 +00:00
|
|
|
char name[16];
|
|
|
|
|
|
|
|
memset( items, 0, sizeof( items ) );
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
if( mbedtls_pk_debug( pk, items ) != 0 )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
debug_send_line( ssl, level, file, line,
|
|
|
|
"invalid PK context\n" );
|
2015-04-08 17:48:22 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
for( i = 0; i < MBEDTLS_PK_DEBUG_MAX_ITEMS; i++ )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
if( items[i].type == MBEDTLS_PK_DEBUG_NONE )
|
2015-04-08 17:48:22 +00:00
|
|
|
return;
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_snprintf( name, sizeof( name ), "%s%s", text, items[i].name );
|
2015-04-08 17:48:22 +00:00
|
|
|
name[sizeof( name ) - 1] = '\0';
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
if( items[i].type == MBEDTLS_PK_DEBUG_MPI )
|
|
|
|
mbedtls_debug_print_mpi( ssl, level, file, line, name, items[i].value );
|
2015-04-08 17:48:22 +00:00
|
|
|
else
|
2015-10-04 17:08:38 +00:00
|
|
|
#if defined(MBEDTLS_ECP_C)
|
|
|
|
if( items[i].type == MBEDTLS_PK_DEBUG_ECP )
|
|
|
|
mbedtls_debug_print_ecp( ssl, level, file, line, name, items[i].value );
|
2015-04-08 17:48:22 +00:00
|
|
|
else
|
|
|
|
#endif
|
2015-10-04 17:08:38 +00:00
|
|
|
debug_send_line( ssl, level, file, line,
|
|
|
|
"should not happen\n" );
|
2015-04-08 17:48:22 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
static void debug_print_line_by_line( const mbedtls_ssl_context *ssl, int level,
|
|
|
|
const char *file, int line, const char *text )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
char str[DEBUG_BUF_SIZE];
|
|
|
|
const char *start, *cur;
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
start = text;
|
|
|
|
for( cur = text; *cur != '\0'; cur++ )
|
2015-04-08 17:48:22 +00:00
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
if( *cur == '\n' )
|
|
|
|
{
|
|
|
|
size_t len = cur - start + 1;
|
|
|
|
if( len > DEBUG_BUF_SIZE - 1 )
|
|
|
|
len = DEBUG_BUF_SIZE - 1;
|
|
|
|
|
|
|
|
memcpy( str, start, len );
|
|
|
|
str[len] = '\0';
|
|
|
|
|
|
|
|
debug_send_line( ssl, level, file, line, str );
|
|
|
|
|
|
|
|
start = cur + 1;
|
|
|
|
}
|
2015-04-08 17:48:22 +00:00
|
|
|
}
|
2015-10-04 17:08:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void mbedtls_debug_print_crt( const mbedtls_ssl_context *ssl, int level,
|
|
|
|
const char *file, int line,
|
|
|
|
const char *text, const mbedtls_x509_crt *crt )
|
|
|
|
{
|
|
|
|
char str[DEBUG_BUF_SIZE];
|
|
|
|
int i = 0;
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2019-06-27 09:04:40 +00:00
|
|
|
if( NULL == ssl ||
|
|
|
|
NULL == ssl->conf ||
|
|
|
|
NULL == ssl->conf->f_dbg ||
|
|
|
|
NULL == crt ||
|
|
|
|
level > debug_threshold )
|
|
|
|
{
|
2015-10-04 17:08:38 +00:00
|
|
|
return;
|
2019-06-27 09:04:40 +00:00
|
|
|
}
|
2015-04-08 17:48:22 +00:00
|
|
|
|
|
|
|
while( crt != NULL )
|
|
|
|
{
|
|
|
|
char buf[1024];
|
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_snprintf( str, sizeof( str ), "%s #%d:\n", text, ++i );
|
|
|
|
debug_send_line( ssl, level, file, line, str );
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
mbedtls_x509_crt_info( buf, sizeof( buf ) - 1, "", crt );
|
|
|
|
debug_print_line_by_line( ssl, level, file, line, buf );
|
2015-04-08 17:48:22 +00:00
|
|
|
|
|
|
|
debug_print_pk( ssl, level, file, line, "crt->", &crt->pk );
|
|
|
|
|
|
|
|
crt = crt->next;
|
|
|
|
}
|
|
|
|
}
|
2015-10-04 17:08:38 +00:00
|
|
|
#endif /* MBEDTLS_X509_CRT_PARSE_C */
|
2015-04-08 17:48:22 +00:00
|
|
|
|
2015-10-04 17:08:38 +00:00
|
|
|
#endif /* MBEDTLS_DEBUG_C */
|