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 {
  25         local mtdname="$1"
  26         local key="$2"
  27         local part
  28         local mac_dirty
  29
  30         part=$(find_mtd_part "$mtdname")
  31         if [ -z "$part" ]; then
  32                 echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
  33                 return
  34         fi
  35
  36         mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
  37
  38         # "canonicalize" mac
  39         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
  40 }
  41
  42 mtd_get_mac_binary() {
  43         local mtdname="$1"
  44         local offset="$2"
  45         local part
  46
  47         part=$(find_mtd_part "$mtdname")
  48         get_mac_binary "$part" "$offset"
  49 }
  50
  51 mtd_get_mac_binary_ubi() {
  52         local mtdname="$1"
  53         local offset="$2"
  54
  55         . /lib/upgrade/nand.sh
  56
  57         local ubidev=$(nand_find_ubi $CI_UBIPART)
  58         local part=$(nand_find_volume $ubidev $1)
  59
  60         if [ -z "$part" ]; then
  61                 echo "mtd_get_mac_binary: ubi volume $mtdname not found!" >&2
  62                 return
  63         fi
  64
  65         hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' /dev/$part 2>/dev/null
  66 }
  67
  68 mtd_get_part_size() {
  69         local part_name=$1
  70         local first dev size erasesize name
  71         while read dev size erasesize name; do
  72                 name=${name#'"'}; name=${name%'"'}
  73                 if [ "$name" = "$part_name" ]; then
  74                         echo $((0x$size))
  75                         break
  76                 fi
  77         done < /proc/mtd
  78 }
  79
  80 macaddr_add() {
  81         local mac=$1
  82         local val=$2
  83         local oui=${mac%:*:*:*}
  84         local nic=${mac#*:*:*:}
  85
  86         nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
  87         echo $oui:$nic
  88 }
  89
  90 macaddr_setbit_la()
  91 {
  92         local mac=$1
  93
  94         printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
  95 }
  96
  97 macaddr_2bin()
  98 {
  99         local mac=$1
 100
 101         echo -ne \\x${mac//:/\\x}
 102 }
 103
 104 macaddr_canonicalize()
 105 {
 106         local mac="$1"
 107         local canon=""
 108
 109         mac=$(echo -n $mac | tr -d \")
 110         [ ${#mac} -gt 17 ] && return
 111         [ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
 112
 113         for octet in ${mac//[\.:-]/ }; do
 114                 case "${#octet}" in
 115                 1)
 116                         octet="0${octet}"
 117                         ;;
 118                 2)
 119                         ;;
 120                 4)
 121                         octet="${octet:0:2} ${octet:2:2}"
 122                         ;;
 123                 12)
 124                         octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
 125                         ;;
 126                 *)
 127                         return
 128                         ;;
 129                 esac
 130                 canon=${canon}${canon:+ }${octet}
 131         done
 132
 133         [ ${#canon} -ne 17 ] && return
 134
 135         printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
 136 }