/src/mbedtls/library/debug.c

Source
/*
 *  Debugging routines
 *
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 */

#include "common.h"

#if defined(MBEDTLS_DEBUG_C)

#include "mbedtls/platform.h"

#include "debug_internal.h"
#include "mbedtls/error.h"

#include <stdarg.h>
#include <stdio.h>
#include <string.h>

/* DEBUG_BUF_SIZE must be at least 2 */
#define DEBUG_BUF_SIZE      512

int mbedtls_debug_snprintf(char *dest, size_t maxlen,
                           const char *format, ...)
{
    va_list argp;
    va_start(argp, format);
    int ret = mbedtls_vsnprintf(dest, maxlen, format, argp);
    va_end(argp);
    return ret;
}

static int debug_threshold = 0;

void mbedtls_debug_set_threshold(int threshold)
{
    debug_threshold = threshold;
}

/*
 * All calls to f_dbg must be made via this function
 */
static inline void debug_send_line(const mbedtls_ssl_context *ssl, int level,
                                   const char *file, int line,
                                   const char *str)
{
    /*
     * If in a threaded environment, we need a thread identifier.
     * Since there is no portable way to get one, use the address of the ssl
     * context instead, as it shouldn't be shared between threads.
     */
#if defined(MBEDTLS_THREADING_C)
    char idstr[20 + DEBUG_BUF_SIZE]; /* 0x + 16 nibbles + ': ' */
    mbedtls_snprintf(idstr, sizeof(idstr), "%p: %s", (void *) ssl, str);
    ssl->conf->f_dbg(ssl->conf->p_dbg, level, file, line, idstr);
#else
    ssl->conf->f_dbg(ssl->conf->p_dbg, level, file, line, str);
#endif
}

MBEDTLS_PRINTF_ATTRIBUTE(5, 6)
void mbedtls_debug_print_msg(const mbedtls_ssl_context *ssl, int level,
                             const char *file, int line,
                             const char *format, ...)
{
    va_list argp;
    char str[DEBUG_BUF_SIZE];
    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;

    MBEDTLS_STATIC_ASSERT(DEBUG_BUF_SIZE >= 2, "DEBUG_BUF_SIZE too small");

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        level > debug_threshold) {
        return;
    }

    va_start(argp, format);
    ret = mbedtls_vsnprintf(str, DEBUG_BUF_SIZE, format, argp);
    va_end(argp);

    if (ret < 0) {
        ret = 0;
    } else {
        if (ret >= DEBUG_BUF_SIZE - 1) {
            ret = DEBUG_BUF_SIZE - 2;
        }
    }
    str[ret]     = '\n';
    str[ret + 1] = '\0';

    debug_send_line(ssl, level, file, line, str);
}

void mbedtls_debug_print_ret(const mbedtls_ssl_context *ssl, int level,
                             const char *file, int line,
                             const char *text, int ret)
{
    char str[DEBUG_BUF_SIZE];

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        level > debug_threshold) {
        return;
    }

    /*
     * With non-blocking I/O and examples that just retry immediately,
     * the logs would be quickly flooded with WANT_READ, so ignore that.
     * Don't ignore WANT_WRITE however, since it is usually rare.
     */
    if (ret == MBEDTLS_ERR_SSL_WANT_READ) {
        return;
    }

    mbedtls_snprintf(str, sizeof(str), "%s() returned %d (-0x%04x)\n",
                     text, ret, (unsigned int) -ret);

    debug_send_line(ssl, level, file, line, str);
}

void mbedtls_debug_print_buf(const mbedtls_ssl_context *ssl, int level,
                             const char *file, int line, const char *text,
                             const unsigned char *buf, size_t len)
{
    char str[DEBUG_BUF_SIZE];
    char txt[17];
    size_t i, idx = 0;

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        level > debug_threshold) {
        return;
    }

    mbedtls_snprintf(str + idx, sizeof(str) - idx, "dumping '%s' (%u bytes)\n",
                     text, (unsigned int) len);

    debug_send_line(ssl, level, file, line, str);

    memset(txt, 0, sizeof(txt));
    for (i = 0; i < len; i++) {
        if (i >= 4096) {
            break;
        }

        if (i % 16 == 0) {
            if (i > 0) {
                mbedtls_snprintf(str + idx, sizeof(str) - idx, "  %s\n", txt);
                debug_send_line(ssl, level, file, line, str);

                idx = 0;
                memset(txt, 0, sizeof(txt));
            }

            idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, "%04x: ",
                                    (unsigned int) i);

        }

        idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x",
                                (unsigned int) buf[i]);
        txt[i % 16] = (buf[i] > 31 && buf[i] < 127) ? buf[i] : '.';
    }

    if (len > 0) {
        for (/* i = i */; i % 16 != 0; i++) {
            idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, "   ");
        }

        mbedtls_snprintf(str + idx, sizeof(str) - idx, "  %s\n", txt);
        debug_send_line(ssl, level, file, line, str);
    }
}

#if defined(MBEDTLS_ECP_LIGHT)
void mbedtls_debug_print_ecp(const mbedtls_ssl_context *ssl, int level,
                             const char *file, int line,
                             const char *text, const mbedtls_ecp_point *X)
{
    char str[DEBUG_BUF_SIZE];

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        level > debug_threshold) {
        return;
    }

    mbedtls_snprintf(str, sizeof(str), "%s(X)", text);
    mbedtls_debug_print_mpi(ssl, level, file, line, str, &X->X);

    mbedtls_snprintf(str, sizeof(str), "%s(Y)", text);
    mbedtls_debug_print_mpi(ssl, level, file, line, str, &X->Y);
}
#endif /* MBEDTLS_ECP_LIGHT */

#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
static void mbedtls_debug_print_ec_coord(const mbedtls_ssl_context *ssl, int level,
                                         const char *file, int line, const char *text,
                                         const unsigned char *buf, size_t len)
{
    char str[DEBUG_BUF_SIZE];
    size_t i, idx = 0;

    mbedtls_snprintf(str + idx, sizeof(str) - idx, "value of '%s' (%u bits) is:\n",
                     text, (unsigned int) len * 8);

    debug_send_line(ssl, level, file, line, str);

    for (i = 0; i < len; i++) {
        if (i >= 4096) {
            break;
        }

        if (i % 16 == 0) {
            if (i > 0) {
                mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
                debug_send_line(ssl, level, file, line, str);

                idx = 0;
            }
        }

        idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x",
                                (unsigned int) buf[i]);
    }

    if (len > 0) {
        for (/* i = i */; i % 16 != 0; i++) {
            idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, "   ");
        }

        mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
        debug_send_line(ssl, level, file, line, str);
    }
}

void mbedtls_debug_print_psa_ec(const mbedtls_ssl_context *ssl, int level,
                                const char *file, int line,
                                const char *text, const mbedtls_pk_context *pk)
{
    char str[DEBUG_BUF_SIZE];
    const uint8_t *coord_start;
    size_t coord_len;

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        level > debug_threshold) {
        return;
    }

    /* For the description of pk->pk_raw content please refer to the description
     * psa_export_public_key() function. */
    coord_len = (pk->pub_raw_len - 1)/2;

    /* X coordinate */
    coord_start = pk->pub_raw + 1;
    mbedtls_snprintf(str, sizeof(str), "%s(X)", text);
    mbedtls_debug_print_ec_coord(ssl, level, file, line, str, coord_start, coord_len);

    /* Y coordinate */
    coord_start = coord_start + coord_len;
    mbedtls_snprintf(str, sizeof(str), "%s(Y)", text);
    mbedtls_debug_print_ec_coord(ssl, level, file, line, str, coord_start, coord_len);
}
#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */

#if defined(MBEDTLS_BIGNUM_C)
void mbedtls_debug_print_mpi(const mbedtls_ssl_context *ssl, int level,
                             const char *file, int line,
                             const char *text, const mbedtls_mpi *X)
{
    char str[DEBUG_BUF_SIZE];
    size_t bitlen;
    size_t idx = 0;

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        NULL == X                ||
        level > debug_threshold) {
        return;
    }

    bitlen = mbedtls_mpi_bitlen(X);

    mbedtls_snprintf(str, sizeof(str), "value of '%s' (%u bits) is:\n",
                     text, (unsigned) bitlen);
    debug_send_line(ssl, level, file, line, str);

    if (bitlen == 0) {
        str[0] = ' '; str[1] = '0'; str[2] = '0';
        idx = 3;
    } else {
        int n;
        for (n = (int) ((bitlen - 1) / 8); n >= 0; n--) {
            size_t limb_offset = n / sizeof(mbedtls_mpi_uint);
            size_t offset_in_limb = n % sizeof(mbedtls_mpi_uint);
            unsigned char octet =
                (X->p[limb_offset] >> (offset_in_limb * 8)) & 0xff;
            mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x", octet);
            idx += 3;
            /* Wrap lines after 16 octets that each take 3 columns */
            if (idx >= 3 * 16) {
                mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
                debug_send_line(ssl, level, file, line, str);
                idx = 0;
            }
        }
    }

    if (idx != 0) {
        mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
        debug_send_line(ssl, level, file, line, str);
    }
}
#endif /* MBEDTLS_BIGNUM_C */

#if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_INFO)
static void debug_print_pk(const mbedtls_ssl_context *ssl, int level,
                           const char *file, int line,
                           const char *text, const mbedtls_pk_context *pk)
{
    size_t i;
    mbedtls_pk_debug_item items[MBEDTLS_PK_DEBUG_MAX_ITEMS];
    char name[16];

    memset(items, 0, sizeof(items));

    if (mbedtls_pk_debug(pk, items) != 0) {
        debug_send_line(ssl, level, file, line,
                        "invalid PK context\n");
        return;
    }

    for (i = 0; i < MBEDTLS_PK_DEBUG_MAX_ITEMS; i++) {
        if (items[i].type == MBEDTLS_PK_DEBUG_NONE) {
            return;
        }

        mbedtls_snprintf(name, sizeof(name), "%s%s", text, items[i].name);
        name[sizeof(name) - 1] = '\0';

#if defined(MBEDTLS_RSA_C)
        if (items[i].type == MBEDTLS_PK_DEBUG_MPI) {
            mbedtls_debug_print_mpi(ssl, level, file, line, name, items[i].value);
        } else
#endif /* MBEDTLS_RSA_C */
#if defined(MBEDTLS_ECP_LIGHT)
        if (items[i].type == MBEDTLS_PK_DEBUG_ECP) {
            mbedtls_debug_print_ecp(ssl, level, file, line, name, items[i].value);
        } else
#endif /* MBEDTLS_ECP_LIGHT */
#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
        if (items[i].type == MBEDTLS_PK_DEBUG_PSA_EC) {
            mbedtls_debug_print_psa_ec(ssl, level, file, line, name, items[i].value);
        } else
#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
        { debug_send_line(ssl, level, file, line,
                          "should not happen\n"); }
    }
}

static void debug_print_line_by_line(const mbedtls_ssl_context *ssl, int level,
                                     const char *file, int line, const char *text)
{
    char str[DEBUG_BUF_SIZE];
    const char *start, *cur;

    start = text;
    for (cur = text; *cur != '\0'; cur++) {
        if (*cur == '\n') {
            size_t len = (size_t) (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;
        }
    }
}

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;

    if (NULL == ssl              ||
        NULL == ssl->conf        ||
        NULL == ssl->conf->f_dbg ||
        NULL == crt              ||
        level > debug_threshold) {
        return;
    }

    while (crt != NULL) {
        char buf[1024];

        mbedtls_snprintf(str, sizeof(str), "%s #%d:\n", text, ++i);
        debug_send_line(ssl, level, file, line, str);

        mbedtls_x509_crt_info(buf, sizeof(buf) - 1, "", crt);
        debug_print_line_by_line(ssl, level, file, line, buf);

        debug_print_pk(ssl, level, file, line, "crt->", &crt->pk);

        crt = crt->next;
    }
}
#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_X509_REMOVE_INFO */

#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_ANY_ENABLED) && \
    defined(MBEDTLS_ECDH_C)
static void mbedtls_debug_printf_ecdh_internal(const mbedtls_ssl_context *ssl,
                                               int level, const char *file,
                                               int line,
                                               const mbedtls_ecdh_context *ecdh,
                                               mbedtls_debug_ecdh_attr attr)
{
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
    const mbedtls_ecdh_context *ctx = ecdh;
#else
    const mbedtls_ecdh_context_mbed *ctx = &ecdh->ctx.mbed_ecdh;
#endif

    switch (attr) {
        case MBEDTLS_DEBUG_ECDH_Q:
            mbedtls_debug_print_ecp(ssl, level, file, line, "ECDH: Q",
                                    &ctx->Q);
            break;
        case MBEDTLS_DEBUG_ECDH_QP:
            mbedtls_debug_print_ecp(ssl, level, file, line, "ECDH: Qp",
                                    &ctx->Qp);
            break;
        case MBEDTLS_DEBUG_ECDH_Z:
            mbedtls_debug_print_mpi(ssl, level, file, line, "ECDH: z",
                                    &ctx->z);
            break;
        default:
            break;
    }
}

void mbedtls_debug_printf_ecdh(const mbedtls_ssl_context *ssl, int level,
                               const char *file, int line,
                               const mbedtls_ecdh_context *ecdh,
                               mbedtls_debug_ecdh_attr attr)
{
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
    mbedtls_debug_printf_ecdh_internal(ssl, level, file, line, ecdh, attr);
#else
    switch (ecdh->var) {
        default:
            mbedtls_debug_printf_ecdh_internal(ssl, level, file, line, ecdh,
                                               attr);
    }
#endif
}
#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_ANY_ENABLED &&
          MBEDTLS_ECDH_C */

#endif /* MBEDTLS_DEBUG_C */

Coverage Report

Created: 2026-04-01 06:05

Line	Count	Source
1		/*
2		* Debugging routines
3		*
4		* Copyright The Mbed TLS Contributors
5		* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
6		*/
7
8		#include "common.h"
9
10		#if defined(MBEDTLS_DEBUG_C)
11
12		#include "mbedtls/platform.h"
13
14		#include "debug_internal.h"
15		#include "mbedtls/error.h"
16
17		#include <stdarg.h>
18		#include <stdio.h>
19		#include <string.h>
20
21		/* DEBUG_BUF_SIZE must be at least 2 */
22	0	#define DEBUG_BUF_SIZE 512
23
24		int mbedtls_debug_snprintf(char *dest, size_t maxlen,
25		const char *format, ...)
26	0	{
27	0	va_list argp;
28	0	va_start(argp, format);
29	0	int ret = mbedtls_vsnprintf(dest, maxlen, format, argp);
30	0	va_end(argp);
31	0	return ret;
32	0	}
33
34		static int debug_threshold = 0;
35
36		void mbedtls_debug_set_threshold(int threshold)
37	0	{
38	0	debug_threshold = threshold;
39	0	}
40
41		/*
42		* All calls to f_dbg must be made via this function
43		*/
44		static inline void debug_send_line(const mbedtls_ssl_context *ssl, int level,
45		const char *file, int line,
46		const char *str)
47	0	{
48		/*
49		* If in a threaded environment, we need a thread identifier.
50		* Since there is no portable way to get one, use the address of the ssl
51		* context instead, as it shouldn't be shared between threads.
52		*/
53	0	#if defined(MBEDTLS_THREADING_C)
54	0	char idstr[20 + DEBUG_BUF_SIZE]; /* 0x + 16 nibbles + ': ' */
55	0	mbedtls_snprintf(idstr, sizeof(idstr), "%p: %s", (void *) ssl, str);
56	0	ssl->conf->f_dbg(ssl->conf->p_dbg, level, file, line, idstr);
57		#else
58		ssl->conf->f_dbg(ssl->conf->p_dbg, level, file, line, str);
59		#endif
60	0	}
61
62		MBEDTLS_PRINTF_ATTRIBUTE(5, 6)
63		void mbedtls_debug_print_msg(const mbedtls_ssl_context *ssl, int level,
64		const char *file, int line,
65		const char *format, ...)
66	3.00M	{
67	3.00M	va_list argp;
68	3.00M	char str[DEBUG_BUF_SIZE];
69	3.00M	int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
70
71	3.00M	MBEDTLS_STATIC_ASSERT(DEBUG_BUF_SIZE >= 2, "DEBUG_BUF_SIZE too small");
72
73	3.00M	if (NULL == ssl \|\|
74	3.00M	NULL == ssl->conf \|\|
75	3.00M	NULL == ssl->conf->f_dbg \|\|
76	3.00M	level > debug_threshold) {
77	3.00M	return;
78	3.00M	}
79
80	3.00M	va_start(argp, format);
81	0	ret = mbedtls_vsnprintf(str, DEBUG_BUF_SIZE, format, argp);
82	0	va_end(argp);
83
84	0	if (ret < 0) {
85	0	ret = 0;
86	0	} else {
87	0	if (ret >= DEBUG_BUF_SIZE - 1) {
88	0	ret = DEBUG_BUF_SIZE - 2;
89	0	}
90	0	}
91	0	str[ret] = '\n';
92	0	str[ret + 1] = '\0';
93
94	0	debug_send_line(ssl, level, file, line, str);
95	0	}
96
97		void mbedtls_debug_print_ret(const mbedtls_ssl_context *ssl, int level,
98		const char *file, int line,
99		const char *text, int ret)
100	149k	{
101	149k	char str[DEBUG_BUF_SIZE];
102
103	149k	if (NULL == ssl \|\|
104	149k	NULL == ssl->conf \|\|
105	149k	NULL == ssl->conf->f_dbg \|\|
106	149k	level > debug_threshold) {
107	149k	return;
108	149k	}
109
110		/*
111		* With non-blocking I/O and examples that just retry immediately,
112		* the logs would be quickly flooded with WANT_READ, so ignore that.
113		* Don't ignore WANT_WRITE however, since it is usually rare.
114		*/
115	0	if (ret == MBEDTLS_ERR_SSL_WANT_READ) {
116	0	return;
117	0	}
118
119	0	mbedtls_snprintf(str, sizeof(str), "%s() returned %d (-0x%04x)\n",
120	0	text, ret, (unsigned int) -ret);
121
122	0	debug_send_line(ssl, level, file, line, str);
123	0	}
124
125		void mbedtls_debug_print_buf(const mbedtls_ssl_context *ssl, int level,
126		const char file, int line, const char text,
127		const unsigned char *buf, size_t len)
128	330k	{
129	330k	char str[DEBUG_BUF_SIZE];
130	330k	char txt[17];
131	330k	size_t i, idx = 0;
132
133	330k	if (NULL == ssl \|\|
134	330k	NULL == ssl->conf \|\|
135	330k	NULL == ssl->conf->f_dbg \|\|
136	330k	level > debug_threshold) {
137	330k	return;
138	330k	}
139
140	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, "dumping '%s' (%u bytes)\n",
141	0	text, (unsigned int) len);
142
143	0	debug_send_line(ssl, level, file, line, str);
144
145	0	memset(txt, 0, sizeof(txt));
146	0	for (i = 0; i < len; i++) {
147	0	if (i >= 4096) {
148	0	break;
149	0	}
150
151	0	if (i % 16 == 0) {
152	0	if (i > 0) {
153	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, " %s\n", txt);
154	0	debug_send_line(ssl, level, file, line, str);
155
156	0	idx = 0;
157	0	memset(txt, 0, sizeof(txt));
158	0	}
159
160	0	idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, "%04x: ",
161	0	(unsigned int) i);
162
163	0	}
164
165	0	idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x",
166	0	(unsigned int) buf[i]);
167	0	txt[i % 16] = (buf[i] > 31 && buf[i] < 127) ? buf[i] : '.';
168	0	}
169
170	0	if (len > 0) {
171	0	for (/* i = i */; i % 16 != 0; i++) {
172	0	idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " ");
173	0	}
174
175	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, " %s\n", txt);
176	0	debug_send_line(ssl, level, file, line, str);
177	0	}
178	0	}
179
180		#if defined(MBEDTLS_ECP_LIGHT)
181		void mbedtls_debug_print_ecp(const mbedtls_ssl_context *ssl, int level,
182		const char *file, int line,
183		const char text, const mbedtls_ecp_point X)
184	1.28k	{
185	1.28k	char str[DEBUG_BUF_SIZE];
186
187	1.28k	if (NULL == ssl \|\|
188	1.28k	NULL == ssl->conf \|\|
189	1.28k	NULL == ssl->conf->f_dbg \|\|
190	1.28k	level > debug_threshold) {
191	1.28k	return;
192	1.28k	}
193
194	0	mbedtls_snprintf(str, sizeof(str), "%s(X)", text);
195	0	mbedtls_debug_print_mpi(ssl, level, file, line, str, &X->X);
196
197	0	mbedtls_snprintf(str, sizeof(str), "%s(Y)", text);
198	0	mbedtls_debug_print_mpi(ssl, level, file, line, str, &X->Y);
199	0	}
200		#endif /* MBEDTLS_ECP_LIGHT */
201
202		#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
203		static void mbedtls_debug_print_ec_coord(const mbedtls_ssl_context *ssl, int level,
204		const char file, int line, const char text,
205		const unsigned char *buf, size_t len)
206		{
207		char str[DEBUG_BUF_SIZE];
208		size_t i, idx = 0;
209
210		mbedtls_snprintf(str + idx, sizeof(str) - idx, "value of '%s' (%u bits) is:\n",
211		text, (unsigned int) len * 8);
212
213		debug_send_line(ssl, level, file, line, str);
214
215		for (i = 0; i < len; i++) {
216		if (i >= 4096) {
217		break;
218		}
219
220		if (i % 16 == 0) {
221		if (i > 0) {
222		mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
223		debug_send_line(ssl, level, file, line, str);
224
225		idx = 0;
226		}
227		}
228
229		idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x",
230		(unsigned int) buf[i]);
231		}
232
233		if (len > 0) {
234		for (/* i = i */; i % 16 != 0; i++) {
235		idx += mbedtls_snprintf(str + idx, sizeof(str) - idx, " ");
236		}
237
238		mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
239		debug_send_line(ssl, level, file, line, str);
240		}
241		}
242
243		void mbedtls_debug_print_psa_ec(const mbedtls_ssl_context *ssl, int level,
244		const char *file, int line,
245		const char text, const mbedtls_pk_context pk)
246		{
247		char str[DEBUG_BUF_SIZE];
248		const uint8_t *coord_start;
249		size_t coord_len;
250
251		if (NULL == ssl \|\|
252		NULL == ssl->conf \|\|
253		NULL == ssl->conf->f_dbg \|\|
254		level > debug_threshold) {
255		return;
256		}
257
258		/* For the description of pk->pk_raw content please refer to the description
259		* psa_export_public_key() function. */
260		coord_len = (pk->pub_raw_len - 1)/2;
261
262		/* X coordinate */
263		coord_start = pk->pub_raw + 1;
264		mbedtls_snprintf(str, sizeof(str), "%s(X)", text);
265		mbedtls_debug_print_ec_coord(ssl, level, file, line, str, coord_start, coord_len);
266
267		/* Y coordinate */
268		coord_start = coord_start + coord_len;
269		mbedtls_snprintf(str, sizeof(str), "%s(Y)", text);
270		mbedtls_debug_print_ec_coord(ssl, level, file, line, str, coord_start, coord_len);
271		}
272		#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
273
274		#if defined(MBEDTLS_BIGNUM_C)
275		void mbedtls_debug_print_mpi(const mbedtls_ssl_context *ssl, int level,
276		const char *file, int line,
277		const char text, const mbedtls_mpi X)
278	913	{
279	913	char str[DEBUG_BUF_SIZE];
280	913	size_t bitlen;
281	913	size_t idx = 0;
282
283	913	if (NULL == ssl \|\|
284	913	NULL == ssl->conf \|\|
285	913	NULL == ssl->conf->f_dbg \|\|
286	913	NULL == X \|\|
287	913	level > debug_threshold) {
288	913	return;
289	913	}
290
291	0	bitlen = mbedtls_mpi_bitlen(X);
292
293	0	mbedtls_snprintf(str, sizeof(str), "value of '%s' (%u bits) is:\n",
294	0	text, (unsigned) bitlen);
295	0	debug_send_line(ssl, level, file, line, str);
296
297	0	if (bitlen == 0) {
298	0	str[0] = ' '; str[1] = '0'; str[2] = '0';
299	0	idx = 3;
300	0	} else {
301	0	int n;
302	0	for (n = (int) ((bitlen - 1) / 8); n >= 0; n--) {
303	0	size_t limb_offset = n / sizeof(mbedtls_mpi_uint);
304	0	size_t offset_in_limb = n % sizeof(mbedtls_mpi_uint);
305	0	unsigned char octet =
306	0	(X->p[limb_offset] >> (offset_in_limb * 8)) & 0xff;
307	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, " %02x", octet);
308	0	idx += 3;
309		/* Wrap lines after 16 octets that each take 3 columns */
310	0	if (idx >= 3 * 16) {
311	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
312	0	debug_send_line(ssl, level, file, line, str);
313	0	idx = 0;
314	0	}
315	0	}
316	0	}
317
318	0	if (idx != 0) {
319	0	mbedtls_snprintf(str + idx, sizeof(str) - idx, "\n");
320	0	debug_send_line(ssl, level, file, line, str);
321	0	}
322	0	}
323		#endif /* MBEDTLS_BIGNUM_C */
324
325		#if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_INFO)
326		static void debug_print_pk(const mbedtls_ssl_context *ssl, int level,
327		const char *file, int line,
328		const char text, const mbedtls_pk_context pk)
329	0	{
330	0	size_t i;
331	0	mbedtls_pk_debug_item items[MBEDTLS_PK_DEBUG_MAX_ITEMS];
332	0	char name[16];
333
334	0	memset(items, 0, sizeof(items));
335
336	0	if (mbedtls_pk_debug(pk, items) != 0) {
337	0	debug_send_line(ssl, level, file, line,
338	0	"invalid PK context\n");
339	0	return;
340	0	}
341
342	0	for (i = 0; i < MBEDTLS_PK_DEBUG_MAX_ITEMS; i++) {
343	0	if (items[i].type == MBEDTLS_PK_DEBUG_NONE) {
344	0	return;
345	0	}
346
347	0	mbedtls_snprintf(name, sizeof(name), "%s%s", text, items[i].name);
348	0	name[sizeof(name) - 1] = '\0';
349
350	0	#if defined(MBEDTLS_RSA_C)
351	0	if (items[i].type == MBEDTLS_PK_DEBUG_MPI) {
352	0	mbedtls_debug_print_mpi(ssl, level, file, line, name, items[i].value);
353	0	} else
354	0	#endif /* MBEDTLS_RSA_C */
355	0	#if defined(MBEDTLS_ECP_LIGHT)
356	0	if (items[i].type == MBEDTLS_PK_DEBUG_ECP) {
357	0	mbedtls_debug_print_ecp(ssl, level, file, line, name, items[i].value);
358	0	} else
359	0	#endif /* MBEDTLS_ECP_LIGHT */
360		#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
361		if (items[i].type == MBEDTLS_PK_DEBUG_PSA_EC) {
362		mbedtls_debug_print_psa_ec(ssl, level, file, line, name, items[i].value);
363		} else
364		#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
365	0	{ debug_send_line(ssl, level, file, line,
366	0	"should not happen\n"); }
367	0	}
368	0	}
369
370		static void debug_print_line_by_line(const mbedtls_ssl_context *ssl, int level,
371		const char file, int line, const char text)
372	0	{
373	0	char str[DEBUG_BUF_SIZE];
374	0	const char start, cur;
375
376	0	start = text;
377	0	for (cur = text; *cur != '\0'; cur++) {
378	0	if (*cur == '\n') {
379	0	size_t len = (size_t) (cur - start) + 1;
380	0	if (len > DEBUG_BUF_SIZE - 1) {
381	0	len = DEBUG_BUF_SIZE - 1;
382	0	}
383
384	0	memcpy(str, start, len);
385	0	str[len] = '\0';
386
387	0	debug_send_line(ssl, level, file, line, str);
388
389	0	start = cur + 1;
390	0	}
391	0	}
392	0	}
393
394		void mbedtls_debug_print_crt(const mbedtls_ssl_context *ssl, int level,
395		const char *file, int line,
396		const char text, const mbedtls_x509_crt crt)
397	5.14k	{
398	5.14k	char str[DEBUG_BUF_SIZE];
399	5.14k	int i = 0;
400
401	5.14k	if (NULL == ssl \|\|
402	5.14k	NULL == ssl->conf \|\|
403	5.14k	NULL == ssl->conf->f_dbg \|\|
404	5.14k	NULL == crt \|\|
405	5.14k	level > debug_threshold) {
406	5.14k	return;
407	5.14k	}
408
409	0	while (crt != NULL) {
410	0	char buf[1024];
411
412	0	mbedtls_snprintf(str, sizeof(str), "%s #%d:\n", text, ++i);
413	0	debug_send_line(ssl, level, file, line, str);
414
415	0	mbedtls_x509_crt_info(buf, sizeof(buf) - 1, "", crt);
416	0	debug_print_line_by_line(ssl, level, file, line, buf);
417
418	0	debug_print_pk(ssl, level, file, line, "crt->", &crt->pk);
419
420	0	crt = crt->next;
421	0	}
422	0	}
423		#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_X509_REMOVE_INFO */
424
425		#if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_ANY_ENABLED) && \
426		defined(MBEDTLS_ECDH_C)
427		static void mbedtls_debug_printf_ecdh_internal(const mbedtls_ssl_context *ssl,
428		int level, const char *file,
429		int line,
430		const mbedtls_ecdh_context *ecdh,
431		mbedtls_debug_ecdh_attr attr)
432	1.63k	{
433	1.63k	#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
434	1.63k	const mbedtls_ecdh_context *ctx = ecdh;
435		#else
436		const mbedtls_ecdh_context_mbed *ctx = &ecdh->ctx.mbed_ecdh;
437		#endif
438
439	1.63k	switch (attr) {
440	416	case MBEDTLS_DEBUG_ECDH_Q:
441	416	mbedtls_debug_print_ecp(ssl, level, file, line, "ECDH: Q",
442	416	&ctx->Q);
443	416	break;
444	871	case MBEDTLS_DEBUG_ECDH_QP:
445	871	mbedtls_debug_print_ecp(ssl, level, file, line, "ECDH: Qp",
446	871	&ctx->Qp);
447	871	break;
448	344	case MBEDTLS_DEBUG_ECDH_Z:
449	344	mbedtls_debug_print_mpi(ssl, level, file, line, "ECDH: z",
450	344	&ctx->z);
451	344	break;
452	0	default:
453	0	break;
454	1.63k	}
455	1.63k	}
456
457		void mbedtls_debug_printf_ecdh(const mbedtls_ssl_context *ssl, int level,
458		const char *file, int line,
459		const mbedtls_ecdh_context *ecdh,
460		mbedtls_debug_ecdh_attr attr)
461	1.63k	{
462	1.63k	#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
463	1.63k	mbedtls_debug_printf_ecdh_internal(ssl, level, file, line, ecdh, attr);
464		#else
465		switch (ecdh->var) {
466		default:
467		mbedtls_debug_printf_ecdh_internal(ssl, level, file, line, ecdh,
468		attr);
469		}
470		#endif
471	1.63k	}
472		#endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_OR_ECDHE_ANY_ENABLED &&
473		MBEDTLS_ECDH_C */
474
475		#endif /* MBEDTLS_DEBUG_C */