--- libelwix/src/net.c	2013/05/26 20:03:19	1.1.1.1.6.1
+++ libelwix/src/net.c	2013/06/03 22:50:00	1.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: net.c,v 1.1.1.1.6.1 2013/05/26 20:03:19 misho Exp $
+* $Id: net.c,v 1.4 2013/06/03 22:50:00 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -280,4 +280,109 @@ e_usleep(u_int usec)
 	struct timeval tv = { (time_t) (usec / 1000000), (long) (usec % 1000000) };
 
 	return select(0, NULL, NULL, NULL, &tv);
+}
+
+/*
+ * e_innet() - Test address match in network
+ *
+ * @net = network
+ * @addr = address
+ * return: -1 error, 0 match or 1 not match
+ */
+int
+e_innet(netaddr_t * __restrict net, inaddr_t * __restrict addr)
+{
+	register int i;
+	int ret = 0;
+
+	if (!net || !addr)
+		return -1;
+
+	switch (net->addr.sa.sa_family) {
+		case AF_INET:
+			for (i = 0; i < sizeof(struct in_addr); i++) {
+				ret = ((caddr_t) &net->addr.sin.sin_addr.s_addr)[i] & 
+					net->mask.in.s4_addr[i];
+				ret -= addr->in.s4_addr[i] & net->mask.in.s4_addr[i];
+				if (ret)
+					break;
+			}
+			break;
+		case AF_INET6:
+			for (i = 0; i < sizeof(struct in6_addr); i++) {
+				ret = net->addr.sin6.sin6_addr.s6_addr[i] & 
+					net->mask.in6.s6_addr[i];
+				ret -= addr->in6.s6_addr[i] & net->mask.in6.s6_addr[i];
+				if (ret)
+					break;
+			}
+			break;
+		default:
+			return -1;
+	}
+
+	return !!ret;
+}
+
+/*
+ * e_getnet() - Get network from string
+ *
+ * @net = Network string (format: <net[/cidr]>)
+ * return: NULL error or !=NULL network should be e_free()
+ */
+netaddr_t *
+e_getnet(const char *net)
+{
+	netaddr_t *n;
+	char *str, *wrk;
+	struct hostent *host;
+
+	n = e_malloc(sizeof(netaddr_t));
+	if (!n) {
+		LOGERR;
+		return NULL;
+	} else
+		memset(n, 0, sizeof(netaddr_t));
+	str = e_strdup(net);
+	if (!str) {
+		LOGERR;
+		e_free(n);
+		return NULL;
+	}
+	wrk = strchr(str, '/');
+	if (wrk)
+		*wrk++ = 0;
+
+	host = gethostbyname2(str, strchr(str, ':') ? AF_INET6 : AF_INET);
+	if (!host) {
+		elwix_SetErr(EINVAL, "Resolver #%d - %s", h_errno, hstrerror(h_errno));
+		e_free(str);
+		e_free(n);
+		return NULL;
+	}
+	switch (host->h_addrtype) {
+		case AF_INET:
+			n->addr.sin.sin_len = sizeof(struct sockaddr_in);
+			n->addr.sin.sin_family = host->h_addrtype;
+			memcpy(&n->addr.sin.sin_addr, host->h_addr, sizeof n->addr.sin.sin_addr);
+			if (wrk)
+				n->mask.in.s_addr = E_CIDRMASK(strtol(wrk, NULL, 10));
+			else
+				n->mask.in.s_addr = 0xFFFFFFFF;
+			break;
+		case AF_INET6:
+			n->addr.sin6.sin6_len = sizeof(struct sockaddr_in6);
+			n->addr.sin6.sin6_family = host->h_addrtype;
+			memcpy(&n->addr.sin6.sin6_addr, host->h_addr, sizeof n->addr.sin6.sin6_addr);
+			/* TODO: should support ipv6 mask */
+			break;
+		default:
+			elwix_SetErr(EINVAL, "Unsupported family #%d", host->h_addrtype);
+			e_free(str);
+			e_free(n);
+			return NULL;
+	}
+
+	e_free(str);
+	return n;
 }