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

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