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"' $path 2>/dev/null
  13 }
  14
  15 find_mtd_chardev() {
  16         local INDEX=$(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_text() {
  42         local mtdname=$1
  43         local offset=$2
  44         local part
  45         local mac_dirty
  46
  47         part=$(find_mtd_part "$mtdname")
  48         if [ -z "$part" ]; then
  49                 echo "mtd_get_mac_text: partition $mtdname not found!" >&2
  50                 return
  51         fi
  52
  53         if [ -z "$offset" ]; then
  54                 echo "mtd_get_mac_text: offset missing!" >&2
  55                 return
  56         fi
  57
  58         mac_dirty=$(dd if="$part" bs=1 skip="$offset" count=17 2>/dev/null)
  59
  60         # "canonicalize" mac
  61         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
  62 }
  63
  64 mtd_get_mac_binary() {
  65         local mtdname="$1"
  66         local offset="$2"
  67         local part
  68
  69         part=$(find_mtd_part "$mtdname")
  70         get_mac_binary "$part" "$offset"
  71 }
  72
  73 mtd_get_mac_binary_ubi() {
  74         local mtdname="$1"
  75         local offset="$2"
  76
  77         . /lib/upgrade/nand.sh
  78
  79         local ubidev=$(nand_find_ubi $CI_UBIPART)
  80         local part=$(nand_find_volume $ubidev $1)
  81
  82         get_mac_binary "/dev/$part" "$offset"
  83 }
  84
  85 mtd_get_part_size() {
  86         local part_name=$1
  87         local first dev size erasesize name
  88         while read dev size erasesize name; do
  89                 name=${name#'"'}; name=${name%'"'}
  90                 if [ "$name" = "$part_name" ]; then
  91                         echo $((0x$size))
  92                         break
  93                 fi
  94         done < /proc/mtd
  95 }
  96
  97 macaddr_add() {
  98         local mac=$1
  99         local val=$2
 100         local oui=${mac%:*:*:*}
 101         local nic=${mac#*:*:*:}
 102
 103         nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
 104         echo $oui:$nic
 105 }
 106
 107 macaddr_setbit_la() {
 108         local mac=$1
 109
 110         printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
 111 }
 112
 113 macaddr_2bin() {
 114         local mac=$1
 115
 116         echo -ne \\x${mac//:/\\x}
 117 }
 118
 119 macaddr_canonicalize() {
 120         local mac="$1"
 121         local canon=""
 122
 123         mac=$(echo -n $mac | tr -d \")
 124         [ ${#mac} -gt 17 ] && return
 125         [ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
 126
 127         for octet in ${mac//[\.:-]/ }; do
 128                 case "${#octet}" in
 129                 1)
 130                         octet="0${octet}"
 131                         ;;
 132                 2)
 133                         ;;
 134                 4)
 135                         octet="${octet:0:2} ${octet:2:2}"
 136                         ;;
 137                 12)
 138                         octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
 139                         ;;
 140                 *)
 141                         return
 142                         ;;
 143                 esac
 144                 canon=${canon}${canon:+ }${octet}
 145         done
 146
 147         [ ${#canon} -ne 17 ] && return
 148
 149         printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
 150 }