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