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

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