/* * Copyright (C) 2002 Nikos Mavroyanopoulos * * This file is part of LIBASN1. * * The LIBTASN1 library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <int.h> /* These function are like strcat, strcpy. They only * do bound checking (they shouldn't cause buffer overruns), * and they always produce null terminated strings. * * They should be used only with null terminated strings. */ void _asn1_str_cat( char* dest, size_t dest_tot_size, const char* src) { size_t str_size = strlen(src); size_t dest_size = strlen(dest); if ( dest_tot_size - dest_size > str_size) { strcat( dest, src); } else { if ( dest_tot_size - dest_size > 0) { strncat( dest, src, (dest_tot_size - dest_size) -1); dest[dest_tot_size-1] = 0; } } } void _asn1_str_cpy( char* dest, size_t dest_tot_size, const char* src) { size_t str_size = strlen(src); if ( dest_tot_size > str_size) { strcpy( dest, src); } else { if ( dest_tot_size > 0) { strncpy( dest, src, (dest_tot_size) -1); dest[dest_tot_size-1] = 0; } } } void _asn1_mem_cpy( char* dest, size_t dest_tot_size, const char* src, size_t src_size) { if ( dest_tot_size >= src_size) { memcpy( dest, src, src_size); } else { if ( dest_tot_size > 0) { memcpy( dest, src, dest_tot_size); } } }