1/*
2 * Message Processing Stack, Trace module
3 *
4 * Copyright The Mbed TLS Contributors
5 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
8 * not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 * This file is part of Mbed TLS (https://tls.mbed.org)
20 */
21
22#include "common.h"
23
24#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
25
26#include "mps_common.h"
27
28#if defined(MBEDTLS_MPS_ENABLE_TRACE)
29
30#include "mps_trace.h"
31#include <stdarg.h>
32
33static int trace_depth = 0;
34
35#define color_default "\x1B[0m"
36#define color_red "\x1B[1;31m"
37#define color_green "\x1B[1;32m"
38#define color_yellow "\x1B[1;33m"
39#define color_blue "\x1B[1;34m"
40#define color_magenta "\x1B[1;35m"
41#define color_cyan "\x1B[1;36m"
42#define color_white "\x1B[1;37m"
43
44static char const *colors[] =
45{
46 color_default,
47 color_green,
48 color_yellow,
49 color_magenta,
50 color_cyan,
51 color_blue,
52 color_white
53};
54
55#define MPS_TRACE_BUF_SIZE 100
56
57void mbedtls_mps_trace_print_msg(int id, int line, const char *format, ...)
58{
59 int ret;
60 char str[MPS_TRACE_BUF_SIZE];
61 va_list argp;
62 va_start(argp, format);
63 ret = mbedtls_vsnprintf(str, MPS_TRACE_BUF_SIZE, format, argp);
64 va_end(argp);
65
66 if (ret >= 0 && ret < MPS_TRACE_BUF_SIZE) {
67 str[ret] = '\0';
68 mbedtls_printf("[%d|L%d]: %s\n", id, line, str);
69 }
70}
71
72int mbedtls_mps_trace_get_depth()
73{
74 return trace_depth;
75}
76void mbedtls_mps_trace_dec_depth()
77{
78 trace_depth--;
79}
80void mbedtls_mps_trace_inc_depth()
81{
82 trace_depth++;
83}
84
85void mbedtls_mps_trace_color(int id)
86{
87 if (id > (int) (sizeof(colors) / sizeof(*colors))) {
88 return;
89 }
90 printf("%s", colors[id]);
91}
92
93void mbedtls_mps_trace_indent(int level, mbedtls_mps_trace_type ty)
94{
95 if (level > 0) {
96 while (--level) {
97 printf("| ");
98 }
99
100 printf("| ");
101 }
102
103 switch (ty) {
104 case MBEDTLS_MPS_TRACE_TYPE_COMMENT:
105 mbedtls_printf("@ ");
106 break;
107
108 case MBEDTLS_MPS_TRACE_TYPE_CALL:
109 mbedtls_printf("+--> ");
110 break;
111
112 case MBEDTLS_MPS_TRACE_TYPE_ERROR:
113 mbedtls_printf("E ");
114 break;
115
116 case MBEDTLS_MPS_TRACE_TYPE_RETURN:
117 mbedtls_printf("< ");
118 break;
119
120 default:
121 break;
122 }
123}
124
125#endif /* MBEDTLS_MPS_ENABLE_TRACE */
126#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
127