/*
 * Copyright (C) 2000 Rob Crittenden (rcrit@greyoak.com)
 * Copyright (C) 2001 Ross Combs (ross@bnetd.org)
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#include "common/setup_before.h"
#include <stdio.h>
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#else
# ifndef NULL
#  define NULL ((void *)0)
# endif
#endif
#ifdef STDC_HEADERS
# include <stdlib.h>
#endif
#include "compat/strtoul.h"
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include "compat/strchr.h"
#include "common/proginfo.h"
#include "common/setup_after.h"


extern int verparts_to_vernum(unsigned short v1, unsigned short v2, unsigned short v3, unsigned short v4, unsigned long * vernum)
{
    if (!vernum)
	return -1;
    
    *vernum = (((unsigned long)v4)<<24) |
              (((unsigned long)v3)<<16) |
              (((unsigned long)v2)<< 8) |
              (((unsigned long)v1)    );
    return 0;
}


extern int verstr_to_vernum(char const * verstr, unsigned long * vernum)
{
    unsigned long v1,v2,v3,v4;
    
    if (!vernum)
	return -1;
    
    if (strchr(verstr,'.'))
    {
	int count;
	
	count = sscanf(verstr,"%lu.%lu.%lu.%lu",&v4,&v3,&v2,&v1);
        if (count<4)
	{
	    v1 = 0;
            if (count<3)
	    {
	        v2 = 0;
                if (count<2)
	            return -1; /* no data */
	    }
	}
    }
    else
    {
	unsigned long temp;
	
	temp = strtoul(verstr,NULL,10);
	v4 = (temp/100);
        v3 = (temp/ 10)%10;
        v2 = (temp    )%10;
        v1 = 0;
    }
    
    if (v1>255 || v2>255 || v3>255 || v4>255)
	return -1;
    *vernum = (v4<<24) | (v3<<16) | (v2<< 8) | (v1    );
    return 0;
}


extern char const * vernum_to_verstr(unsigned long vernum)
{
    static char verstr[16];
    
    sprintf(verstr,"%lu.%lu.%lu.%lu",
            (vernum>>24)     ,
            (vernum>>16)&0xff,
            (vernum>> 8)&0xff,
            (vernum    )&0xff);
    return verstr;
}