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"' $path 2>/dev/null
  13 }
  14
  15 get_mac_label() {
  16         local basepath="/proc/device-tree"
  17         local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
  18         local macaddr
  19
  20         [ -n "$macdevice" ] && macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
  21         [ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
  22         [ -n "$macaddr" ] || macaddr=$(uci -q get system.@system[0].label_macaddr)
  23         echo $macaddr
  24 }
  25
  26 find_mtd_chardev() {
  27         local INDEX=$(find_mtd_index "$1")
  28         local PREFIX=/dev/mtd
  29
  30         [ -d /dev/mtd ] && PREFIX=/dev/mtd/
  31         echo "${INDEX:+$PREFIX$INDEX}"
  32 }
  33
  34 mtd_get_mac_ascii() {
  35         local mtdname="$1"
  36         local key="$2"
  37         local part
  38         local mac_dirty
  39
  40         part=$(find_mtd_part "$mtdname")
  41         if [ -z "$part" ]; then
  42                 echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
  43                 return
  44         fi
  45
  46         mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
  47
  48         # "canonicalize" mac
  49         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
  50 }
  51
  52 mtd_get_mac_text() {
  53         local mtdname=$1
  54         local offset=$(($2))
  55         local part
  56         local mac_dirty
  57
  58         part=$(find_mtd_part "$mtdname")
  59         if [ -z "$part" ]; then
  60                 echo "mtd_get_mac_text: partition $mtdname not found!" >&2
  61                 return
  62         fi
  63
  64         if [ -z "$offset" ]; then
  65                 echo "mtd_get_mac_text: offset missing!" >&2
  66                 return
  67         fi
  68
  69         mac_dirty=$(dd if="$part" bs=1 skip="$offset" count=17 2>/dev/null)
  70
  71         # "canonicalize" mac
  72         [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
  73 }
  74
  75 mtd_get_mac_binary() {
  76         local mtdname="$1"
  77         local offset="$2"
  78         local part
  79
  80         part=$(find_mtd_part "$mtdname")
  81         get_mac_binary "$part" "$offset"
  82 }
  83
  84 mtd_get_mac_binary_ubi() {
  85         local mtdname="$1"
  86         local offset="$2"
  87
  88         . /lib/upgrade/nand.sh
  89
  90         local ubidev=$(nand_find_ubi $CI_UBIPART)
  91         local part=$(nand_find_volume $ubidev $1)
  92
  93         get_mac_binary "/dev/$part" "$offset"
  94 }
  95
  96 mtd_get_part_size() {
  97         local part_name=$1
  98         local first dev size erasesize name
  99         while read dev size erasesize name; do
 100                 name=${name#'"'}; name=${name%'"'}
 101                 if [ "$name" = "$part_name" ]; then
 102                         echo $((0x$size))
 103                         break
 104                 fi
 105         done < /proc/mtd
 106 }
 107
 108 macaddr_add() {
 109         local mac=$1
 110         local val=$2
 111         local oui=${mac%:*:*:*}
 112         local nic=${mac#*:*:*:}
 113
 114         nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
 115         echo $oui:$nic
 116 }
 117
 118 macaddr_setbit_la() {
 119         local mac=$1
 120
 121         printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
 122 }
 123
 124 macaddr_2bin() {
 125         local mac=$1
 126
 127         echo -ne \\x${mac//:/\\x}
 128 }
 129
 130 macaddr_canonicalize() {
 131         local mac="$1"
 132         local canon=""
 133
 134         mac=$(echo -n $mac | tr -d \")
 135         [ ${#mac} -gt 17 ] && return
 136         [ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
 137
 138         for octet in ${mac//[\.:-]/ }; do
 139                 case "${#octet}" in
 140                 1)
 141                         octet="0${octet}"
 142                         ;;
 143                 2)
 144                         ;;
 145                 4)
 146                         octet="${octet:0:2} ${octet:2:2}"
 147                         ;;
 148                 12)
 149                         octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
 150                         ;;
 151                 *)
 152                         return
 153                         ;;
 154                 esac
 155                 canon=${canon}${canon:+ }${octet}
 156         done
 157
 158         [ ${#canon} -ne 17 ] && return
 159
 160         printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
 161 }