mirror of
https://github.com/Mbed-TLS/mbedtls.git
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203 lines
5.1 KiB
C
203 lines
5.1 KiB
C
/*
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* Debugging routines
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*
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* Copyright (C) 2006-2007 Christophe Devine
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "xyssl/config.h"
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#if defined(XYSSL_DEBUG_C)
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#include "xyssl/debug.h"
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#include <stdarg.h>
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#include <stdlib.h>
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#if defined _MSC_VER && !defined snprintf
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#define snprintf _snprintf
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#endif
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#if defined _MSC_VER && !defined vsnprintf
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#define vsnprintf _vsnprintf
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#endif
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char *debug_fmt( const char *format, ... )
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{
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va_list argp;
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static char str[512];
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int maxlen = sizeof( str ) - 1;
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va_start( argp, format );
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vsnprintf( str, maxlen, format, argp );
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va_end( argp );
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str[maxlen] = '\0';
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return( str );
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}
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void debug_print_msg( ssl_context *ssl, int level,
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char *file, int line, char *text )
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{
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char str[512];
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int maxlen = sizeof( str ) - 1;
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if( ssl->f_dbg == NULL )
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return;
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snprintf( str, maxlen, "%s(%04d): %s\n", file, line, text );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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void debug_print_ret( ssl_context *ssl, int level,
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char *file, int line, char *text, int ret )
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{
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char str[512];
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int maxlen = sizeof( str ) - 1;
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if( ssl->f_dbg == NULL )
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return;
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snprintf( str, maxlen, "%s(%04d): %s() returned %d (0x%x)\n",
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file, line, text, ret, ret );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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void debug_print_buf( ssl_context *ssl, int level,
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char *file, int line, char *text,
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unsigned char *buf, int len )
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{
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char str[512];
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int i, maxlen = sizeof( str ) - 1;
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if( ssl->f_dbg == NULL || len < 0 )
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return;
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snprintf( str, maxlen, "%s(%04d): dumping '%s' (%d bytes)\n",
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file, line, text, len );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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for( i = 0; i < len; i++ )
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{
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if( i >= 4096 )
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break;
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if( i % 16 == 0 )
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{
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if( i > 0 )
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ssl->f_dbg( ssl->p_dbg, level, "\n" );
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snprintf( str, maxlen, "%s(%04d): %04x: ", file, line, i );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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snprintf( str, maxlen, " %02x", (unsigned int) buf[i] );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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if( len > 0 )
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ssl->f_dbg( ssl->p_dbg, level, "\n" );
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}
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void debug_print_mpi( ssl_context *ssl, int level,
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char *file, int line, char *text, mpi *X )
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{
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char str[512];
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int i, j, k, n, maxlen = sizeof( str ) - 1;
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if( ssl->f_dbg == NULL || X == NULL )
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return;
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for( n = X->n - 1; n >= 0; n-- )
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if( X->p[n] != 0 )
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break;
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snprintf( str, maxlen, "%s(%04d): value of '%s' (%d bits) is:\n",
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file, line, text, ((n + 1) * sizeof( t_int )) << 3 );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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for( i = n, j = 0; i >= 0; i--, j++ )
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{
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if( j % ( 16 / sizeof( t_int ) ) == 0 )
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{
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if( j > 0 )
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ssl->f_dbg( ssl->p_dbg, level, "\n" );
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snprintf( str, maxlen, "%s(%04d): ", file, line );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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for( k = sizeof( t_int ) - 1; k >= 0; k-- )
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{
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snprintf( str, maxlen, " %02x", (unsigned int)
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( X->p[i] >> (k << 3) ) & 0xFF );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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}
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}
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ssl->f_dbg( ssl->p_dbg, level, "\n" );
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}
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void debug_print_crt( ssl_context *ssl, int level,
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char *file, int line, char *text, x509_cert *crt )
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{
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char str[512], prefix[64], *p;
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int i = 0, maxlen = sizeof( prefix ) - 1;
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if( ssl->f_dbg == NULL || crt == NULL )
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return;
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snprintf( prefix, maxlen, "%s(%04d): ", file, line );
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prefix[maxlen] = '\0';
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maxlen = sizeof( str ) - 1;
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while( crt != NULL && crt->next != NULL )
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{
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p = x509parse_cert_info( prefix, crt );
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snprintf( str, maxlen, "%s(%04d): %s #%d:\n%s",
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file, line, text, ++i, p );
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str[maxlen] = '\0';
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ssl->f_dbg( ssl->p_dbg, level, str );
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debug_print_mpi( ssl, level, file, line,
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"crt->rsa.N", &crt->rsa.N );
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debug_print_mpi( ssl, level, file, line,
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"crt->rsa.E", &crt->rsa.E );
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crt = crt->next;
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}
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}
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#endif
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