/src/mbedtls/library/debug.c

Source (jump to first uncovered line)
/*
 *  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

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: 2025-03-01 06:26

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