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-rw-r--r--lib/mbedtls-2.27.0/library/debug.c422
1 files changed, 422 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/library/debug.c b/lib/mbedtls-2.27.0/library/debug.c
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+++ b/lib/mbedtls-2.27.0/library/debug.c
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+/*
+ * Debugging routines
+ *
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "common.h"
+
+#if defined(MBEDTLS_DEBUG_C)
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_calloc calloc
+#define mbedtls_free free
+#define mbedtls_time_t time_t
+#define mbedtls_snprintf snprintf
+#define mbedtls_vsnprintf vsnprintf
+#endif
+
+#include "mbedtls/debug.h"
+#include "mbedtls/error.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
+ !defined(inline) && !defined(__cplusplus)
+#define inline __inline
+#endif
+
+#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;
+
+ 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 < DEBUG_BUF_SIZE - 1 )
+ {
+ 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 is 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 );
+
+ idx = 0;
+ 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_C)
+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_C */
+
+#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)
+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( items[i].type == MBEDTLS_PK_DEBUG_MPI )
+ mbedtls_debug_print_mpi( ssl, level, file, line, name, items[i].value );
+ else
+#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 );
+ else
+#endif
+ 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 = 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 */
+
+#if 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_ECDH_C */
+
+#endif /* MBEDTLS_DEBUG_C */
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