android_device_xiaomi_clover/rootdir/bin/init.macaddress_setup.sh

#! /vendor/bin/sh

# Copyright (c) 2013, The Linux Foundation. All rights reserved.
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CLOVERMAC=/persist/wlan_mac.clover
WLAN_MAC_BIN=/persist/wlan_mac.bin
MACADDRESSBIN=/persist/wlan_bt/wlan.mac
INTFSTR0="Intf0MacAddress="
MAC0=000AF58989FF

get_mac () {
  if [ -f $MACADDRESSBIN ]; then
    realMac=$(printf "%b"  | od -An -t x1 -w6 -N6  $MACADDRESSBIN | tr -d '\n ')
  else
    if [ -f $WLAN_MAC_BIN ]; then
        checkMac=$(printf "%b"  | od -An -t x1 -w6 -N6  $CLOVERMAC | tr -d '\n ')
        if [ $checkMac != $MAC0 ] && [ "${checkMac:0:2}" != "49" ]; then
          realMac=$checkMac
        fi
    else
        realMac=$MAC0
    fi
  fi
}

wlan_mac () {
    wlanMac=$(head -n 1 $CLOVERMAC)
    wlanMac=$(echo -e "${wlanMac//$INTFSTR0}")
}

write_mac () {
        echo -e  "$INTFSTR0""$realMac" >$CLOVERMAC
        echo -e  "END">>$CLOVERMAC
        chown wifi $CLOVERMAC
        chgrp wifi $CLOVERMAC
}

if [ -f $CLOVERMAC ]; then
    get_mac
    wlan_mac
    if [ "${realMac:0:6}" == "${wlanMac:0:6}" ] && [ "${wlanMac:0:2}" != "49" ]; then
        exit 1
    else
        get_mac
        write_mac
    fi
else
    get_mac
    write_mac
fi