aboutsummaryrefslogtreecommitdiffstats
path: root/package/base-files/files/lib/functions/system.sh
blob: d4402c3a148ae1f7aede36d6bdc1c8775ec38116 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
# Copyright (C) 2006-2013 OpenWrt.org

get_mac_binary() {
	local path="$1"
	local offset="$2"

	if [ -z "$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
}

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")
	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)

	if [ -z "$part" ]; then
		echo "mtd_get_mac_binary: ubi volume $mtdname not found!" >&2
		return
	fi

	hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' /dev/$part 2>/dev/null
}

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
}