openwrt/package/base-files/files/lib/functions/system.sh
Daniel Golle 45c85c1827 base-files: add mmc_get_mac_ascii function
Similar to the *_get_mac_binary function, also split the common parts
off mtd_get_mac_ascii into new get_mac_ascii function and introduce
mmc_get_mac_ascii which uses it.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2023-12-09 22:47:10 +00:00

323 lines
6.7 KiB
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# Copyright (C) 2006-2013 OpenWrt.org
. /lib/functions.sh
. /usr/share/libubox/jshn.sh
get_mac_binary() {
local path="$1"
local offset="$2"
if ! [ -e "$path" ]; then
echo "get_mac_binary: file $path not found!" >&2
return
fi
hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' $path 2>/dev/null
}
get_mac_label_dt() {
local basepath="/proc/device-tree"
local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
local macaddr
[ -n "$macdevice" ] || return
macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
[ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
echo $macaddr
}
get_mac_label_json() {
local cfg="/etc/board.json"
local macaddr
[ -s "$cfg" ] || return
json_init
json_load "$(cat $cfg)"
if json_is_a system object; then
json_select system
json_get_var macaddr label_macaddr
json_select ..
fi
echo $macaddr
}
get_mac_label() {
local macaddr=$(get_mac_label_dt)
[ -n "$macaddr" ] || macaddr=$(get_mac_label_json)
echo $macaddr
}
find_mtd_chardev() {
local INDEX=$(find_mtd_index "$1")
local PREFIX=/dev/mtd
[ -d /dev/mtd ] && PREFIX=/dev/mtd/
echo "${INDEX:+$PREFIX$INDEX}"
}
get_mac_ascii() {
local part="$1"
local key="$2"
local mac_dirty
mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
# "canonicalize" mac
[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
}
mtd_get_mac_ascii() {
local mtdname="$1"
local key="$2"
local part
part=$(find_mtd_part "$mtdname")
if [ -z "$part" ]; then
echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
return
fi
get_mac_ascii "$part" "$key"
}
mtd_get_mac_encrypted_arcadyan() {
local iv="00000000000000000000000000000000"
local key="2A4B303D7644395C3B2B7053553C5200"
local mac_dirty
local mtdname="$1"
local part
local size
part=$(find_mtd_part "$mtdname")
if [ -z "$part" ]; then
echo "mtd_get_mac_encrypted_arcadyan: partition $mtdname not found!" >&2
return
fi
# Config decryption and getting mac. Trying uencrypt and openssl utils.
size=$((0x$(dd if=$part skip=9 bs=1 count=4 2>/dev/null | hexdump -v -e '1/4 "%08x"')))
if [[ -f "/usr/bin/uencrypt" ]]; then
mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
uencrypt -d -n -k $key -i $iv | grep mac | cut -c 5-)
elif [[ -f "/usr/bin/openssl" ]]; then
mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
openssl aes-128-cbc -d -nopad -K $key -iv $iv | grep mac | cut -c 5-)
else
echo "mtd_get_mac_encrypted_arcadyan: Neither uencrypt nor openssl was found!" >&2
return
fi
# "canonicalize" mac
[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
}
mtd_get_mac_encrypted_deco() {
local mtdname="$1"
if ! [ -e "$mtdname" ]; then
echo "mtd_get_mac_encrypted_deco: file $mtdname not found!" >&2
return
fi
tplink_key="3336303032384339"
key=$(dd if=$mtdname bs=1 skip=16 count=8 2>/dev/null | \
uencrypt -n -d -k $tplink_key -c des-ecb | hexdump -v -n 8 -e '1/1 "%02x"')
macaddr=$(dd if=$mtdname bs=1 skip=32 count=8 2>/dev/null | \
uencrypt -n -d -k $key -c des-ecb | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"')
echo $macaddr
}
mtd_get_mac_uci_config_ubi() {
local volumename="$1"
. /lib/upgrade/nand.sh
local ubidev=$(nand_attach_ubi $CI_UBIPART)
local part=$(nand_find_volume $ubidev $volumename)
cat "/dev/$part" | sed -n 's/^\s*option macaddr\s*'"'"'\?\([0-9A-F:]\+\)'"'"'\?/\1/Ip'
}
mtd_get_mac_text() {
local mtdname="$1"
local offset=$((${2:-0}))
local length="${3:-17}"
local part
part=$(find_mtd_part "$mtdname")
if [ -z "$part" ]; then
echo "mtd_get_mac_text: partition $mtdname not found!" >&2
return
fi
[ $((offset + length)) -le $(mtd_get_part_size "$mtdname") ] || return
macaddr_canonicalize $(dd bs=1 if="$part" skip="$offset" count="$length" 2>/dev/null)
}
mtd_get_mac_binary() {
local mtdname="$1"
local offset="$2"
local part
part=$(find_mtd_part "$mtdname")
get_mac_binary "$part" "$offset"
}
mtd_get_mac_binary_ubi() {
local mtdname="$1"
local offset="$2"
. /lib/upgrade/nand.sh
local ubidev=$(nand_find_ubi $CI_UBIPART)
local part=$(nand_find_volume $ubidev $1)
get_mac_binary "/dev/$part" "$offset"
}
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
}
mmc_get_mac_ascii() {
local part_name="$1"
local key="$2"
local part
part=$(find_mmc_part "$part_name")
if [ -z "$part" ]; then
echo "mmc_get_mac_ascii: partition $part_name not found!" >&2
fi
get_mac_ascii "$part" "$key"
}
mmc_get_mac_binary() {
local part_name="$1"
local offset="$2"
local part
part=$(find_mmc_part "$part_name")
get_mac_binary "$part" "$offset"
}
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_generate_from_mmc_cid() {
local mmc_dev=$1
local sd_hash=$(sha256sum /sys/class/block/$mmc_dev/device/cid)
local mac_base=$(macaddr_canonicalize "$(echo "${sd_hash}" | dd bs=1 count=12 2>/dev/null)")
echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${mac_base}")")"
}
macaddr_geteui() {
local mac=$1
local sep=$2
echo ${mac:9:2}$sep${mac:12:2}$sep${mac:15:2}
}
macaddr_setbit() {
local mac=$1
local bit=${2:-0}
[ $bit -gt 0 -a $bit -le 48 ] || return
printf "%012x" $(( 0x${mac//:/} | 2**(48-bit) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
}
macaddr_unsetbit() {
local mac=$1
local bit=${2:-0}
[ $bit -gt 0 -a $bit -le 48 ] || return
printf "%012x" $(( 0x${mac//:/} & ~(2**(48-bit)) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
}
macaddr_setbit_la() {
macaddr_setbit $1 7
}
macaddr_unsetbit_mc() {
local mac=$1
printf "%02x:%s" $((0x${mac%%:*} & ~0x01)) ${mac#*:}
}
macaddr_random() {
local randsrc=$(get_mac_binary /dev/urandom 0)
echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${randsrc}")")"
}
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
}
dt_is_enabled() {
grep -q okay "/proc/device-tree/$1/status"
}