--- libelwix/src/net.c	2013/06/03 22:42:25	1.3.2.2
+++ libelwix/src/net.c	2013/07/09 00:18:19	1.7
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: net.c,v 1.3.2.2 2013/06/03 22:42:25 misho Exp $
+* $Id: net.c,v 1.7 2013/07/09 00:18:19 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
@@ -55,7 +100,7 @@ SUCH DAMAGE.
  * return: NULL error or !=NULL string a
  */
 char *
-e_ether_ntoa(const struct e_ether_addr *n, char * __restrict a, int len)
+e_ether_ntoa(const ether_addr_t * __restrict n, char * __restrict a, int len)
 {
 	if (!n || !a)
 		return NULL;
@@ -77,8 +122,8 @@ e_ether_ntoa(const struct e_ether_addr *n, char * __re
  * @e = ethernet address structure, like struct ether_addr
  * return: NULL error or !=NULL ethernet address structure
  */
-struct e_ether_addr *
-e_ether_aton(const char *a, struct e_ether_addr *e)
+ether_addr_t *
+e_ether_aton(const char *a, ether_addr_t * __restrict e)
 {                       
 	int i;
 	u_int o0, o1, o2, o3, o4, o5;
@@ -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);
@@ -385,4 +437,38 @@ e_getnet(const char *net)
 
 	e_free(str);
 	return n;
+}
+
+/*
+ * e_ether_addr() - Get or set ethernet address from interface name
+ *
+ * @ifname = interface name
+ * @addr = if addr is !=NULL then set this for new address
+ * return: NULL error or !=NULL get ethernet address
+ */
+ether_addr_t *
+e_ether_addr(const char *ifname, ether_addr_t * __restrict addr)
+{
+	ether_addr_t *a = NULL;
+	struct ifaddrs *p, *ifa = NULL;
+
+	if (!ifname)
+		return NULL;
+
+	a = e_malloc(sizeof(ether_addr_t));
+	if (!a)
+		return NULL;
+	else
+		memset(a, 0, sizeof(ether_addr_t));
+
+	getifaddrs(&ifa);
+	for (p = ifa; p && p->ifa_name; p++)
+		if (p->ifa_name && !strcmp(p->ifa_name, ifname) && p->ifa_addr && 
+				p->ifa_addr->sa_family == AF_LINK) {
+			memcpy(a, LLADDR((struct sockaddr_dl*) p->ifa_addr), sizeof(ether_addr_t));
+			break;
+		}
+	freeifaddrs(ifa);
+
+	return a;
 }