Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48027master
parent
46519964ff
commit
eaf8889cf8
@ -0,0 +1,79 @@ |
||||
#!/bin/sh |
||||
. /lib/functions.sh |
||||
. /lib/functions/system.sh |
||||
|
||||
partname="" |
||||
offset="" |
||||
NEW_MAC= |
||||
YES= |
||||
|
||||
case "$(cat /tmp/sysinfo/board_name)" in |
||||
witi) |
||||
partname=factory |
||||
offset=$((0xe000)) |
||||
;; |
||||
*) |
||||
echo "Unsupported board" |
||||
exit 1 |
||||
;; |
||||
esac |
||||
|
||||
while [ -n "$1" ]; do |
||||
case "$1" in |
||||
??:??:??:??:??:??) NEW_MAC="$1";; |
||||
-y) YES=1;; |
||||
*) |
||||
cat <<EOF |
||||
Unknown option/argument '$1' |
||||
Usage: $0 [-y] [<macaddr>] |
||||
EOF |
||||
exit 1 |
||||
;; |
||||
esac |
||||
shift |
||||
done |
||||
|
||||
ask_bool() { |
||||
local message="$1" |
||||
local default="$((! ${2:-0}))" |
||||
[ -n "$YES" ] && return 0 |
||||
echo -n "$message " |
||||
read opt |
||||
case "$opt" in |
||||
y|Y) return 0;; |
||||
n|N) return 1;; |
||||
*) return $default;; |
||||
esac |
||||
} |
||||
|
||||
convert_hex() { |
||||
hexdump -e '/1 "%02x "' |
||||
} |
||||
|
||||
gen_mac() { |
||||
dd if=/dev/urandom bs=6 count=1 2>/dev/null |
||||
} |
||||
|
||||
mac="$(mtd_get_mac_binary $partname $offset)" |
||||
case "$mac" in |
||||
00:00:00:00:00:00);; |
||||
ff:ff:ff:ff:ff:ff);; |
||||
*) |
||||
echo "Current MAC address: $mac" |
||||
ask_bool "Overwrite (y/N)?" 0 || exit |
||||
;; |
||||
esac |
||||
|
||||
if [ -n "$NEW_MAC" ]; then |
||||
set -- $(echo "$NEW_MAC" | sed 's,:, ,g') |
||||
else |
||||
set -- $(gen_mac | convert_hex) |
||||
set -- $(printf %02x $(( (0x$1 & 0xfe) | 0x02 ))) $2 $3 $4 $5 $6 |
||||
fi |
||||
echo "New MAC address: $1:$2:$3:$4:$5:$6" |
||||
ask_bool "Write to EEPROM (y/N)?" || exit |
||||
|
||||
part=$(find_mtd_part "$partname") |
||||
[ -n "$part" ] || exit |
||||
echo -ne "\x$1\x$2\x$3\x$4\x$5\x$6" | dd of=$part conv=notrunc bs=1 count=6 seek=$offset 2>/dev/null |
||||
echo "Done" |
Loading…
Reference in new issue