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#if !defined(MBEDTLS_CONFIG_FILE)#include "mbedtls/config.h"#else#include MBEDTLS_CONFIG_FILE#endif
#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#endif
#include "mbedtls/debug.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}
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;
if( NULL == ssl || NULL == ssl->conf || NULL == ssl->conf->f_dbg || level > debug_threshold ) { return; }
va_start( argp, format );#if defined(_WIN32)#if defined(_TRUNCATE) && !defined(__MINGW32__) ret = _vsnprintf_s( str, DEBUG_BUF_SIZE, _TRUNCATE, format, argp );#else ret = _vsnprintf( str, DEBUG_BUF_SIZE, format, argp ); if( ret < 0 || (size_t) ret == DEBUG_BUF_SIZE ) { str[DEBUG_BUF_SIZE-1] = '\0'; ret = -1; }#endif#else ret = vsnprintf( str, DEBUG_BUF_SIZE, format, argp );#endif 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, -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 */