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

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