debug.c 5.51 KB
Newer Older
1 2 3
/*
 *  Debugging routines
 *
4
 *  Copyright (C) 2006-2010, Brainspark B.V.
Paul Bakker's avatar
Paul Bakker committed
5 6
 *
 *  This file is part of PolarSSL (http://www.polarssl.org)
7
 *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
Paul Bakker's avatar
Paul Bakker committed
8
 *
9
 *  All rights reserved.
Paul Bakker's avatar
Paul Bakker committed
10
 *
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

26
#include "polarssl/config.h"
27

28
#if defined(POLARSSL_DEBUG_C)
29

30
#include "polarssl/debug.h"
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

#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 );
}

57 58
void debug_print_msg( const ssl_context *ssl, int level,
                      const char *file, int line, const char *text )
59 60 61 62 63 64 65 66 67 68 69 70
{
    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 );
}

71 72 73
void debug_print_ret( const ssl_context *ssl, int level,
                      const char *file, int line,
                      const char *text, int ret )
74 75 76 77 78 79 80 81 82 83 84 85 86 87
{
    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 );
}

88 89
void debug_print_buf( const ssl_context *ssl, int level,
                      const char *file, int line, const char *text,
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
                      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" );
}

130 131 132
void debug_print_mpi( const ssl_context *ssl, int level,
                      const char *file, int line,
                      const char *text, const mpi *X )
133 134 135 136 137 138 139 140 141 142 143
{
    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;

144 145 146
    snprintf( str, maxlen, "%s(%04d): value of '%s' (%lu bits) is:\n",
              file, line, text, 
              (unsigned long) ((n + 1) * sizeof( t_int )) << 3 );
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176

    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" );
}

177 178 179
void debug_print_crt( const ssl_context *ssl, int level,
                      const char *file, int line,
                      const char *text, const x509_cert *crt )
180
{
181
    char str[1024], prefix[64];
182 183 184 185 186 187 188 189 190
    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;

Paul Bakker's avatar
Paul Bakker committed
191
    while( crt != NULL )
192
    {
193 194
        char buf[1024];
        x509parse_cert_info( buf, sizeof( buf ) - 1, prefix, crt );
195 196

        snprintf( str, maxlen, "%s(%04d): %s #%d:\n%s",
197
                  file, line, text, ++i, buf );
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212

        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