blob: 46c18b962f1101550f65b139789326e732c2e2b9 [file] [log] [blame]
/*
* Debugging routines
*
* Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
*
* Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of PolarSSL or XySSL nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "polarssl/config.h"
#if defined(POLARSSL_DEBUG_C)
#include "polarssl/debug.h"
#include <stdarg.h>
#include <stdlib.h>
#if defined _MSC_VER && !defined snprintf
#define snprintf _snprintf
#endif
#if defined _MSC_VER && !defined vsnprintf
#define vsnprintf _vsnprintf
#endif
char *debug_fmt( const char *format, ... )
{
va_list argp;
static char str[512];
int maxlen = sizeof( str ) - 1;
va_start( argp, format );
vsnprintf( str, maxlen, format, argp );
va_end( argp );
str[maxlen] = '\0';
return( str );
}
void debug_print_msg( ssl_context *ssl, int level,
char *file, int line, char *text )
{
char str[512];
int maxlen = sizeof( str ) - 1;
if( ssl->f_dbg == NULL )
return;
snprintf( str, maxlen, "%s(%04d): %s\n", file, line, text );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
void debug_print_ret( ssl_context *ssl, int level,
char *file, int line, char *text, int ret )
{
char str[512];
int maxlen = sizeof( str ) - 1;
if( ssl->f_dbg == NULL )
return;
snprintf( str, maxlen, "%s(%04d): %s() returned %d (0x%x)\n",
file, line, text, ret, ret );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
void debug_print_buf( ssl_context *ssl, int level,
char *file, int line, char *text,
unsigned char *buf, int len )
{
char str[512];
int i, maxlen = sizeof( str ) - 1;
if( ssl->f_dbg == NULL || len < 0 )
return;
snprintf( str, maxlen, "%s(%04d): dumping '%s' (%d bytes)\n",
file, line, text, len );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
for( i = 0; i < len; i++ )
{
if( i >= 4096 )
break;
if( i % 16 == 0 )
{
if( i > 0 )
ssl->f_dbg( ssl->p_dbg, level, "\n" );
snprintf( str, maxlen, "%s(%04d): %04x: ", file, line, i );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
snprintf( str, maxlen, " %02x", (unsigned int) buf[i] );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
if( len > 0 )
ssl->f_dbg( ssl->p_dbg, level, "\n" );
}
void debug_print_mpi( ssl_context *ssl, int level,
char *file, int line, char *text, mpi *X )
{
char str[512];
int i, j, k, n, maxlen = sizeof( str ) - 1;
if( ssl->f_dbg == NULL || X == NULL )
return;
for( n = X->n - 1; n >= 0; n-- )
if( X->p[n] != 0 )
break;
snprintf( str, maxlen, "%s(%04d): value of '%s' (%d bits) is:\n",
file, line, text, (int)(((n + 1) * sizeof( t_int )) << 3 ));
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
for( i = n, j = 0; i >= 0; i--, j++ )
{
if( j % ( 16 / sizeof( t_int ) ) == 0 )
{
if( j > 0 )
ssl->f_dbg( ssl->p_dbg, level, "\n" );
snprintf( str, maxlen, "%s(%04d): ", file, line );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
for( k = sizeof( t_int ) - 1; k >= 0; k-- )
{
snprintf( str, maxlen, " %02x", (unsigned int)
( X->p[i] >> (k << 3) ) & 0xFF );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
}
}
ssl->f_dbg( ssl->p_dbg, level, "\n" );
}
void debug_print_crt( ssl_context *ssl, int level,
char *file, int line, char *text, x509_cert *crt )
{
char str[512], prefix[64], *p;
int i = 0, maxlen = sizeof( prefix ) - 1;
if( ssl->f_dbg == NULL || crt == NULL )
return;
snprintf( prefix, maxlen, "%s(%04d): ", file, line );
prefix[maxlen] = '\0';
maxlen = sizeof( str ) - 1;
while( crt != NULL && crt->next != NULL )
{
p = x509parse_cert_info( prefix, crt );
snprintf( str, maxlen, "%s(%04d): %s #%d:\n%s",
file, line, text, ++i, p );
str[maxlen] = '\0';
ssl->f_dbg( ssl->p_dbg, level, str );
debug_print_mpi( ssl, level, file, line,
"crt->rsa.N", &crt->rsa.N );
debug_print_mpi( ssl, level, file, line,
"crt->rsa.E", &crt->rsa.E );
crt = crt->next;
}
}
#endif