| /* |
| * Debugging routines |
| * |
| * Copyright (C) 2006-2010, Brainspark B.V. |
| * |
| * This file is part of PolarSSL (http://www.polarssl.org) |
| * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
| * |
| * All rights reserved. |
| * |
| * 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. |
| */ |
| |
| #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( const ssl_context *ssl, int level, |
| const char *file, int line, const 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( const ssl_context *ssl, int level, |
| const char *file, int line, |
| const 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( const ssl_context *ssl, int level, |
| const char *file, int line, const char *text, |
| unsigned char *buf, size_t len ) |
| { |
| char str[512]; |
| size_t i, maxlen = sizeof( str ) - 1; |
| |
| if( ssl->f_dbg == NULL ) |
| 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( const ssl_context *ssl, int level, |
| const char *file, int line, |
| const char *text, const mpi *X ) |
| { |
| char str[512]; |
| int j, k, maxlen = sizeof( str ) - 1, zeros = 1; |
| size_t i, n; |
| |
| if( ssl->f_dbg == NULL || X == NULL ) |
| return; |
| |
| for( n = X->n - 1; n > 0; n-- ) |
| if( X->p[n] != 0 ) |
| break; |
| |
| for( j = ( sizeof(t_int) << 3 ) - 1; j >= 0; j-- ) |
| if( ( ( X->p[n] >> j ) & 1 ) != 0 ) |
| break; |
| |
| snprintf( str, maxlen, "%s(%04d): value of '%s' (%lu bits) is:\n", |
| file, line, text, |
| (unsigned long) ( ( n * ( sizeof(t_int) << 3 ) ) + j + 1 ) ); |
| |
| str[maxlen] = '\0'; |
| ssl->f_dbg( ssl->p_dbg, level, str ); |
| |
| for( i = n + 1, j = 0; i > 0; i-- ) |
| { |
| if( zeros && X->p[i - 1] == 0 ) |
| continue; |
| |
| for( k = sizeof( t_int ) - 1; k >= 0; k-- ) |
| { |
| if( zeros && ( ( X->p[i - 1] >> (k << 3) ) & 0xFF ) == 0 ) |
| continue; |
| else |
| zeros = 0; |
| |
| if( j % 16 == 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 ); |
| } |
| |
| snprintf( str, maxlen, " %02x", (unsigned int) |
| ( X->p[i - 1] >> (k << 3) ) & 0xFF ); |
| |
| str[maxlen] = '\0'; |
| ssl->f_dbg( ssl->p_dbg, level, str ); |
| |
| j++; |
| } |
| |
| } |
| |
| if( zeros == 1 ) |
| { |
| snprintf( str, maxlen, "%s(%04d): ", file, line ); |
| |
| str[maxlen] = '\0'; |
| ssl->f_dbg( ssl->p_dbg, level, str ); |
| ssl->f_dbg( ssl->p_dbg, level, " 00" ); |
| } |
| |
| ssl->f_dbg( ssl->p_dbg, level, "\n" ); |
| } |
| |
| void debug_print_crt( const ssl_context *ssl, int level, |
| const char *file, int line, |
| const char *text, const x509_cert *crt ) |
| { |
| char str[1024], prefix[64]; |
| 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 ) |
| { |
| char buf[1024]; |
| x509parse_cert_info( buf, sizeof( buf ) - 1, prefix, crt ); |
| |
| snprintf( str, maxlen, "%s(%04d): %s #%d:\n%s", |
| file, line, text, ++i, buf ); |
| |
| 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 |