From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 package/base-files/files/lib/functions/system.sh | 112 +++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 package/base-files/files/lib/functions/system.sh

(limited to 'package/base-files/files/lib/functions/system.sh')

diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
new file mode 100644
index 0000000..8d75a5a
--- /dev/null
+++ b/package/base-files/files/lib/functions/system.sh
@@ -0,0 +1,112 @@
+# Copyright (C) 2006-2013 OpenWrt.org
+
+find_mtd_chardev() {
+	local INDEX=$(find_mtd_index "$1")
+	local PREFIX=/dev/mtd
+
+	[ -d /dev/mtd ] && PREFIX=/dev/mtd/
+	echo "${INDEX:+$PREFIX$INDEX}"
+}
+
+mtd_get_mac_ascii()
+{
+	local mtdname="$1"
+	local key="$2"
+	local part
+	local mac_dirty
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
+		return
+	fi
+
+	mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
+
+	# "canonicalize" mac
+	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_mac_binary() {
+	local mtdname="$1"
+	local offset="$2"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_binary: partition $mtdname not found!" >&2
+		return
+	fi
+
+	dd bs=1 skip=$offset count=6 if=$part 2>/dev/null | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"'
+}
+
+mtd_get_part_size() {
+	local part_name=$1
+	local first dev size erasesize name
+	while read dev size erasesize name; do
+		name=${name#'"'}; name=${name%'"'}
+		if [ "$name" = "$part_name" ]; then
+			echo $((0x$size))
+			break
+		fi
+	done < /proc/mtd
+}
+
+macaddr_add() {
+	local mac=$1
+	local val=$2
+	local oui=${mac%:*:*:*}
+	local nic=${mac#*:*:*:}
+
+	nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+	echo $oui:$nic
+}
+
+macaddr_setbit_la()
+{
+	local mac=$1
+
+	printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
+}
+
+macaddr_2bin()
+{
+	local mac=$1
+
+	echo -ne \\x${mac//:/\\x}
+}
+
+macaddr_canonicalize()
+{
+	local mac="$1"
+	local canon=""
+
+	mac=$(echo -n $mac | tr -d \")
+	[ ${#mac} -gt 17 ] && return
+	[ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
+
+	for octet in ${mac//[\.:-]/ }; do
+		case "${#octet}" in
+		1)
+			octet="0${octet}"
+			;;
+		2)
+			;;
+		4)
+			octet="${octet:0:2} ${octet:2:2}"
+			;;
+		12)
+			octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
+			;;
+		*)
+			return
+			;;
+		esac
+		canon=${canon}${canon:+ }${octet}
+	done
+
+	[ ${#canon} -ne 17 ] && return
+
+	printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
+}
-- 
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