1 files changed, 85 insertions, 0 deletions
diff --git a/networking/libiproute/ll_addr.c b/networking/libiproute/ll_addr.c
new file mode 100644
index 0000000..ba0a65a
--- /dev/null
+++ b/networking/libiproute/ll_addr.c
@@ -0,0 +1,85 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ll_addr.c
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include "libbb.h"
+
+#include <string.h>
+#include <net/if_arp.h>
+
+#include "rt_names.h"
+#include "utils.h"
+
+
+const char *ll_addr_n2a(unsigned char *addr, int alen, int type, char *buf, int blen)
+{
+	int i;
+	int l;
+
+	if (alen == 4 &&
+	    (type == ARPHRD_TUNNEL || type == ARPHRD_SIT || type == ARPHRD_IPGRE)) {
+		return inet_ntop(AF_INET, addr, buf, blen);
+	}
+	l = 0;
+	for (i=0; i<alen; i++) {
+		if (i==0) {
+			snprintf(buf+l, blen, "%02x", addr[i]);
+			blen -= 2;
+			l += 2;
+		} else {
+			snprintf(buf+l, blen, ":%02x", addr[i]);
+			blen -= 3;
+			l += 3;
+		}
+	}
+	return buf;
+}
+
+int ll_addr_a2n(unsigned char *lladdr, int len, char *arg)
+{
+	if (strchr(arg, '.')) {
+		inet_prefix pfx;
+		if (get_addr_1(&pfx, arg, AF_INET)) {
+			bb_error_msg("\"%s\" is invalid lladdr", arg);
+			return -1;
+		}
+		if (len < 4) {
+			return -1;
+		}
+		memcpy(lladdr, pfx.data, 4);
+		return 4;
+	} else {
+		int i;
+
+		for (i=0; i<len; i++) {
+			int temp;
+			char *cp = strchr(arg, ':');
+			if (cp) {
+				*cp = 0;
+				cp++;
+			}
+			if (sscanf(arg, "%x", &temp) != 1) {
+				bb_error_msg("\"%s\" is invalid lladdr", arg);
+				return -1;
+			}
+			if (temp < 0 || temp > 255) {
+				bb_error_msg("\"%s\" is invalid lladdr", arg);
+				return -1;
+			}
+			lladdr[i] = temp;
+			if (!cp) {
+				break;
+			}
+			arg = cp;
+		}
+		return i+1;
+	}
+}