1e3a8f454e
It's necessary to be able to specify the length for MAC addresses that are stored in flash, for example, in a case where it is stored without any delimiter. Let both offset and length have default values. Add a sanity check related to partition size. Also, clean up syntax and unnecessary lines. Signed-off-by: Michael Pratt <mcpratt@pm.me>
303 lines
6.4 KiB
Bash
303 lines
6.4 KiB
Bash
# Copyright (C) 2006-2013 OpenWrt.org
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. /lib/functions.sh
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. /usr/share/libubox/jshn.sh
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get_mac_binary() {
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local path="$1"
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local offset="$2"
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if ! [ -e "$path" ]; then
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echo "get_mac_binary: file $path not found!" >&2
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return
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fi
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hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' $path 2>/dev/null
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}
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get_mac_label_dt() {
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local basepath="/proc/device-tree"
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local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
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local macaddr
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[ -n "$macdevice" ] || return
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macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
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[ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
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echo $macaddr
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}
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get_mac_label_json() {
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local cfg="/etc/board.json"
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local macaddr
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[ -s "$cfg" ] || return
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json_init
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json_load "$(cat $cfg)"
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if json_is_a system object; then
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json_select system
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json_get_var macaddr label_macaddr
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json_select ..
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fi
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echo $macaddr
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}
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get_mac_label() {
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local macaddr=$(get_mac_label_dt)
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[ -n "$macaddr" ] || macaddr=$(get_mac_label_json)
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echo $macaddr
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}
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find_mtd_chardev() {
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local INDEX=$(find_mtd_index "$1")
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local PREFIX=/dev/mtd
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[ -d /dev/mtd ] && PREFIX=/dev/mtd/
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echo "${INDEX:+$PREFIX$INDEX}"
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}
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mtd_get_mac_ascii() {
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local mtdname="$1"
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local key="$2"
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local part
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local mac_dirty
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part=$(find_mtd_part "$mtdname")
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if [ -z "$part" ]; then
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echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
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return
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fi
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mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
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# "canonicalize" mac
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[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
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}
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mtd_get_mac_encrypted_arcadyan() {
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local iv="00000000000000000000000000000000"
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local key="2A4B303D7644395C3B2B7053553C5200"
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local mac_dirty
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local mtdname="$1"
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local part
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local size
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part=$(find_mtd_part "$mtdname")
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if [ -z "$part" ]; then
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echo "mtd_get_mac_encrypted_arcadyan: partition $mtdname not found!" >&2
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return
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fi
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# Config decryption and getting mac. Trying uencrypt and openssl utils.
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size=$((0x$(dd if=$part skip=9 bs=1 count=4 2>/dev/null | hexdump -v -e '1/4 "%08x"')))
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if [[ -f "/usr/bin/uencrypt" ]]; then
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mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
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uencrypt -d -n -k $key -i $iv | grep mac | cut -c 5-)
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elif [[ -f "/usr/bin/openssl" ]]; then
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mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \
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openssl aes-128-cbc -d -nopad -K $key -iv $iv | grep mac | cut -c 5-)
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else
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echo "mtd_get_mac_encrypted_arcadyan: Neither uencrypt nor openssl was found!" >&2
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return
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fi
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# "canonicalize" mac
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[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
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}
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mtd_get_mac_encrypted_deco() {
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local mtdname="$1"
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if ! [ -e "$mtdname" ]; then
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echo "mtd_get_mac_encrypted_deco: file $mtdname not found!" >&2
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return
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fi
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tplink_key="3336303032384339"
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key=$(dd if=$mtdname bs=1 skip=16 count=8 2>/dev/null | \
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uencrypt -n -d -k $tplink_key -c des-ecb | hexdump -v -n 8 -e '1/1 "%02x"')
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macaddr=$(dd if=$mtdname bs=1 skip=32 count=8 2>/dev/null | \
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uencrypt -n -d -k $key -c des-ecb | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"')
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echo $macaddr
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}
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mtd_get_mac_uci_config_ubi() {
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local volumename="$1"
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. /lib/upgrade/nand.sh
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local ubidev=$(nand_attach_ubi $CI_UBIPART)
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local part=$(nand_find_volume $ubidev $volumename)
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cat "/dev/$part" | sed -n 's/^\s*option macaddr\s*'"'"'\?\([0-9A-F:]\+\)'"'"'\?/\1/Ip'
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}
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mtd_get_mac_text() {
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local mtdname="$1"
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local offset=$((${2:-0}))
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local length="${3:-17}"
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local part
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part=$(find_mtd_part "$mtdname")
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if [ -z "$part" ]; then
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echo "mtd_get_mac_text: partition $mtdname not found!" >&2
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return
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fi
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[ $((offset + length)) -le $(mtd_get_part_size "$mtdname") ] || return
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macaddr_canonicalize $(dd bs=1 if="$part" skip="$offset" count="$length" 2>/dev/null)
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}
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mtd_get_mac_binary() {
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local mtdname="$1"
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local offset="$2"
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local part
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part=$(find_mtd_part "$mtdname")
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get_mac_binary "$part" "$offset"
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}
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mtd_get_mac_binary_ubi() {
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local mtdname="$1"
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local offset="$2"
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. /lib/upgrade/nand.sh
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local ubidev=$(nand_find_ubi $CI_UBIPART)
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local part=$(nand_find_volume $ubidev $1)
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get_mac_binary "/dev/$part" "$offset"
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}
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mtd_get_part_size() {
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local part_name=$1
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local first dev size erasesize name
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while read dev size erasesize name; do
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name=${name#'"'}; name=${name%'"'}
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if [ "$name" = "$part_name" ]; then
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echo $((0x$size))
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break
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fi
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done < /proc/mtd
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}
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mmc_get_mac_binary() {
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local part_name="$1"
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local offset="$2"
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local part
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part=$(find_mmc_part "$part_name")
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get_mac_binary "$part" "$offset"
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}
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macaddr_add() {
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local mac=$1
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local val=$2
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local oui=${mac%:*:*:*}
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local nic=${mac#*:*:*:}
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nic=$(printf "%06x" $((0x${nic//:/} + val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
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echo $oui:$nic
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}
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macaddr_generate_from_mmc_cid() {
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local mmc_dev=$1
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local sd_hash=$(sha256sum /sys/class/block/$mmc_dev/device/cid)
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local mac_base=$(macaddr_canonicalize "$(echo "${sd_hash}" | dd bs=1 count=12 2>/dev/null)")
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echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${mac_base}")")"
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}
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macaddr_geteui() {
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local mac=$1
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local sep=$2
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echo ${mac:9:2}$sep${mac:12:2}$sep${mac:15:2}
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}
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macaddr_setbit() {
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local mac=$1
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local bit=${2:-0}
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[ $bit -gt 0 -a $bit -le 48 ] || return
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printf "%012x" $(( 0x${mac//:/} | 2**(48-bit) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
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}
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macaddr_unsetbit() {
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local mac=$1
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local bit=${2:-0}
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[ $bit -gt 0 -a $bit -le 48 ] || return
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printf "%012x" $(( 0x${mac//:/} & ~(2**(48-bit)) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
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}
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macaddr_setbit_la() {
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macaddr_setbit $1 7
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}
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macaddr_unsetbit_mc() {
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local mac=$1
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printf "%02x:%s" $((0x${mac%%:*} & ~0x01)) ${mac#*:}
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}
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macaddr_random() {
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local randsrc=$(get_mac_binary /dev/urandom 0)
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echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${randsrc}")")"
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}
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macaddr_2bin() {
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local mac=$1
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echo -ne \\x${mac//:/\\x}
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}
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macaddr_canonicalize() {
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local mac="$1"
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local canon=""
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mac=$(echo -n $mac | tr -d \")
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[ ${#mac} -gt 17 ] && return
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[ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
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for octet in ${mac//[\.:-]/ }; do
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case "${#octet}" in
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1)
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octet="0${octet}"
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;;
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2)
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;;
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4)
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octet="${octet:0:2} ${octet:2:2}"
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;;
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12)
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octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
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;;
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*)
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return
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;;
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esac
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canon=${canon}${canon:+ }${octet}
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done
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[ ${#canon} -ne 17 ] && return
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printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
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}
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dt_is_enabled() {
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grep -q okay "/proc/device-tree/$1/status"
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}
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