--- libelwix/src/net.c	2013/06/03 14:00:26	1.3
+++ libelwix/src/net.c	2013/06/20 14:55:23	1.6
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: net.c,v 1.3 2013/06/03 14:00:26 misho Exp $
+* $Id: net.c,v 1.6 2013/06/20 14:55:23 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -46,7 +46,52 @@ SUCH DAMAGE.
 #include "global.h"
 
 
+static char hexlist[] = "0123456789abcdef";
+
 /*
+ * e_link_ntoa() - String ethernet address from link address
+ *
+ * @sdl = link address
+ * return: =NULL error or !=NULL ethernet address, should be e_free()
+ */
+char *
+e_link_ntoa(const struct sockaddr_dl *sdl)
+{
+	static char obuf[64];
+	char *out = obuf;
+	int i;
+	u_char *in = (u_char*) LLADDR(sdl);
+	u_char *inlim = in + sdl->sdl_alen;
+	int firsttime = 1;
+
+	if (sdl->sdl_nlen) {
+		memcpy(obuf, sdl->sdl_data, sdl->sdl_nlen);
+		out += sdl->sdl_nlen;
+		if (sdl->sdl_alen)
+			*out++ = '!';
+	}
+
+	while (in < inlim) {
+		if (firsttime)
+			firsttime ^= firsttime;
+		else
+			*out++ = ':';
+		i = *in++;
+		if (i > 0xf) {
+			out[1] = hexlist[i & 0xf];
+			i >>= 4;
+		} else
+			out[1] = hexlist[0];
+
+		out[0] = hexlist[i];
+		out += 2;
+	}
+
+	*out = 0;
+	return obuf;
+}
+
+/*
  * e_ether_ntoa() - Convert ethernet address to string
  *
  * @n = ethernet address structure, like struct ether_addr
@@ -136,7 +181,7 @@ e_n2port(sockaddr_t * __restrict addr)
 const char *
 e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val)
 {
-	char str[INET6_ADDRSTRLEN] = { 0 };
+	char *s, str[INET6_ADDRSTRLEN] = { 0 };
 	const char *ret = NULL;
 
 	if (!addr || !val)
@@ -161,6 +206,13 @@ e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __r
 		case AF_LOCAL:
 			ret = addr->sun.sun_path;
 			break;
+		case AF_LINK:
+			if (!(s = e_link_ntoa(&addr->sdl))) {
+				LOGERR;
+				return ret;
+			} else
+				ret = s;
+			break;
 		default:
 			elwix_SetErr(EPROTONOSUPPORT, "Unsuported address family %d", 
 					addr->sa.sa_family);
@@ -322,4 +374,67 @@ e_innet(netaddr_t * __restrict net, inaddr_t * __restr
 	}
 
 	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;
 }