C++ (Cpp) bits2netmask Exemples

Exemple #1

Fichier : libipt_NETMAP.c Projet : 325116067/semc-qsd8x50

/* Parses network address */
static void
parse_to(char *arg, struct ip_nat_range *range)
{
	char *slash;
	struct in_addr *ip;
	u_int32_t netmask;
	unsigned int bits;

	range->flags |= IP_NAT_RANGE_MAP_IPS;
	slash = strchr(arg, '/');
	if (slash)
		*slash = '\0';

	ip = dotted_to_addr(arg);
	if (!ip)
		exit_error(PARAMETER_PROBLEM, "Bad IP address `%s'\n",
			   arg);
	range->min_ip = ip->s_addr;
	if (slash) {
		if (strchr(slash+1, '.')) {
			ip = dotted_to_mask(slash+1);
			if (!ip)
				exit_error(PARAMETER_PROBLEM, "Bad netmask `%s'\n",
					   slash+1);
			netmask = ip->s_addr;
		}
		else {
			if (string_to_number(slash+1, 0, 32, &bits) == -1)
				exit_error(PARAMETER_PROBLEM, "Bad netmask `%s'\n",
					   slash+1);
			netmask = bits2netmask(bits);
		}
		/* Don't allow /0 (/1 is probably insane, too) */
		if (netmask == 0)
			exit_error(PARAMETER_PROBLEM, "Netmask needed\n");
	}
	else
		netmask = ~0;

	if (range->min_ip & ~netmask) {
		if (slash)
			*slash = '/';
		exit_error(PARAMETER_PROBLEM, "Bad network address `%s'\n",
			   arg);
	}
	range->max_ip = range->min_ip | ~netmask;
}

Exemple #2

Fichier : libipt_NETMAP.c Projet : jameshilliard/actiontec_opensrc_mi424wr-rev-ef_fw-20-20-8

/* Parses network address */
static void
parse_to(char *arg, struct nf_nat_range *range)
{
	char *slash;
	const struct in_addr *ip;
	u_int32_t netmask;
	unsigned int bits;

	range->flags |= IP_NAT_RANGE_MAP_IPS;
	slash = strchr(arg, '/');
	if (slash)
		*slash = '\0';

	ip = xtables_numeric_to_ipaddr(arg);
	if (!ip)
		xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
			   arg);
	range->min_ip = ip->s_addr;
	if (slash) {
		if (strchr(slash+1, '.')) {
			ip = xtables_numeric_to_ipmask(slash+1);
			if (!ip)
				xtables_error(PARAMETER_PROBLEM, "Bad netmask \"%s\"\n",
					   slash+1);
			netmask = ip->s_addr;
		}
		else {
			if (!xtables_strtoui(slash+1, NULL, &bits, 0, 32))
				xtables_error(PARAMETER_PROBLEM, "Bad netmask \"%s\"\n",
					   slash+1);
			netmask = bits2netmask(bits);
		}
		/* Don't allow /0 (/1 is probably insane, too) */
		if (netmask == 0)
			xtables_error(PARAMETER_PROBLEM, "Netmask needed\n");
	}
	else
		netmask = ~0;

	if (range->min_ip & ~netmask) {
		if (slash)
			*slash = '/';
		xtables_error(PARAMETER_PROBLEM, "Bad network address \"%s\"\n",
			   arg);
	}
	range->max_ip = range->min_ip | ~netmask;
}