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Diffstat (limited to 'polarssl/src/library/debug.c')
| -rw-r--r-- | polarssl/src/library/debug.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/polarssl/src/library/debug.c b/polarssl/src/library/debug.c new file mode 100644 index 0000000..687e194 --- /dev/null +++ b/polarssl/src/library/debug.c @@ -0,0 +1,238 @@ +/* + * 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, (unsigned int) 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, + (unsigned int) 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_uint) << 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_uint) << 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_uint ) - 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 |