net.c

	ip->udp_dst  = htons(dport);
	ip->udp_len  = htons(8 + len);
	ip->udp_xsum = 0;
	ip->ip_sum   = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
}

void copy_filename (uchar *dst, uchar *src, int size)
{
	if (*src && (*src == '"')) {
		++src;
		--size;
	}

	while ((--size > 0) && *src && (*src != '"')) {
		*dst++ = *src++;
	}
	*dst = '\0';
}

#endif /* CFG_CMD_NET */

void ip_to_string (IPaddr_t x, char *s)
{
    x = ntohl(x);
    sprintf (s,"%d.%d.%d.%d",
	(int)((x >> 24) & 0xff),
	(int)((x >> 16) & 0xff),
	(int)((x >>  8) & 0xff),
	(int)((x >>  0) & 0xff)
    );
}

IPaddr_t string_to_ip(char *s)
{
	IPaddr_t addr;
	char *e;
	int i;

	if (s == NULL)
		return(0);

	for (addr=0, i=0; i<4; ++i) {
		ulong val = s ? simple_strtoul(s, &e, 10) : 0;
		addr <<= 8;
		addr |= (val & 0xFF);
		if (s) {
			s = (*e) ? e+1 : e;
		}
	}

	return (htonl(addr));
}

void print_IPaddr (IPaddr_t x)
{
    char tmp[16];

    ip_to_string(x, tmp);

    puts(tmp);
}

IPaddr_t getenv_IPaddr (char *var)
{
	return (string_to_ip(getenv(var)));
}