package/base-files/files/lib/functions/system.sh

   1 # Copyright (C) 2006-2013 OpenWrt.org
   2
   3 . /usr/share/libubox/jshn.sh
   4
   5 get_mac_binary() {
   6         local path="$1"
   7         local offset="$2"
   8
   9         if ! [ -e "$path" ]; then
  10                 echo "get_mac_binary: file $path not found!" >&2
  11                 return
  12         fi
  13
  14         hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' $path 2>/dev/null
  15 }
  16
  17 get_mac_label_dt() {
  18         local basepath="/proc/device-tree"
  19         local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
  20         local macaddr
  21
  22         [ -n "$macdevice" ] || return
  23
  24         macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
  25         [ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
  26
  27         echo $macaddr
  28 }
  29
  30 get_mac_label_json() {
  31         local cfg="/etc/board.json"
  32         local macaddr
  33
  34         [ -s "$cfg" ] || return
  35
  36         json_init
  37         json_load "$(cat $cfg)"
  38         if json_is_a system object; then
  39                 json_select system
  40                         json_get_var macaddr label_macaddr
  41                 json_select ..
  42         fi
  43
  44         echo $macaddr
  45 }
  46
  47 get_mac_label() {
  48         local macaddr=$(get_mac_label_dt)
  49
  50         [ -n "$macaddr" ] || macaddr=$(get_mac_label_json)
  51
  52         echo $macaddr
  53 }
  54
  55 find_mtd_chardev() {
  56         local INDEX=$(find_mtd_index "$1")
  57         local PREFIX=/dev/mtd
  58
  59         [ -d /dev/mtd ] && PREFIX=/dev/mtd/
  60         echo "${INDEX:+$PREFIX$INDEX}"
  61 }
  62
  63 mtd_get_mac_ascii() {
  64         local mtdname="$1"
  65         local key="$2"
  66         local part
  67         local mac_dirty
  68
  69         part=$(find_mtd_part "$mtdname")
  70         if [ -z "$part" ]; then
  71                 echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
  72                 return
  73         fi
  74
  75         mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
  76
  77         # "canonicalize" mac
  78         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
  79 }
  80
  81 mtd_get_mac_text() {
  82         local mtdname=$1
  83         local offset=$(($2))
  84         local part
  85         local mac_dirty
  86
  87         part=$(find_mtd_part "$mtdname")
  88         if [ -z "$part" ]; then
  89                 echo "mtd_get_mac_text: partition $mtdname not found!" >&2
  90                 return
  91         fi
  92
  93         if [ -z "$offset" ]; then
  94                 echo "mtd_get_mac_text: offset missing!" >&2
  95                 return
  96         fi
  97
  98         mac_dirty=$(dd if="$part" bs=1 skip="$offset" count=17 2>/dev/null)
  99
 100         # "canonicalize" mac
 101         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
 102 }
 103
 104 mtd_get_mac_binary() {
 105         local mtdname="$1"
 106         local offset="$2"
 107         local part
 108
 109         part=$(find_mtd_part "$mtdname")
 110         get_mac_binary "$part" "$offset"
 111 }
 112
 113 mtd_get_mac_binary_ubi() {
 114         local mtdname="$1"
 115         local offset="$2"
 116
 117         . /lib/upgrade/nand.sh
 118
 119         local ubidev=$(nand_find_ubi $CI_UBIPART)
 120         local part=$(nand_find_volume $ubidev $1)
 121
 122         get_mac_binary "/dev/$part" "$offset"
 123 }
 124
 125 mtd_get_part_size() {
 126         local part_name=$1
 127         local first dev size erasesize name
 128         while read dev size erasesize name; do
 129                 name=${name#'"'}; name=${name%'"'}
 130                 if [ "$name" = "$part_name" ]; then
 131                         echo $((0x$size))
 132                         break
 133                 fi
 134         done < /proc/mtd
 135 }
 136
 137 macaddr_add() {
 138         local mac=$1
 139         local val=$2
 140         local oui=${mac%:*:*:*}
 141         local nic=${mac#*:*:*:}
 142
 143         nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
 144         echo $oui:$nic
 145 }
 146
 147 macaddr_setbit_la() {
 148         local mac=$1
 149
 150         printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
 151 }
 152
 153 macaddr_2bin() {
 154         local mac=$1
 155
 156         echo -ne \\x${mac//:/\\x}
 157 }
 158
 159 macaddr_canonicalize() {
 160         local mac="$1"
 161         local canon=""
 162
 163         mac=$(echo -n $mac | tr -d \")
 164         [ ${#mac} -gt 17 ] && return
 165         [ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
 166
 167         for octet in ${mac//[\.:-]/ }; do
 168                 case "${#octet}" in
 169                 1)
 170                         octet="0${octet}"
 171                         ;;
 172                 2)
 173                         ;;
 174                 4)
 175                         octet="${octet:0:2} ${octet:2:2}"
 176                         ;;
 177                 12)
 178                         octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
 179                         ;;
 180                 *)
 181                         return
 182                         ;;
 183                 esac
 184                 canon=${canon}${canon:+ }${octet}
 185         done
 186
 187         [ ${#canon} -ne 17 ] && return
 188
 189         printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
 190 }