#!/usr/bin/env lua

function md5sum(str)
  local command="echo -n "..str.." | md5sum"
  local f=io.popen(command)
  local out=f:read('*all')
  return out:sub(1,-5)
  --f:close()
end
--print(md5sum("asdf")) -- 912ec803b2ce49e4a541068d495ab570


--START HERE
function get_account(username,password)
  local ver="Tyroth"
  local temp=string.format("%X",os.time())
  username=string.upper(username)
  local s=temp..ver..username..password
  local m=string.upper(md5sum(s))
  m=string.sub(m,1,20)
  local encodedaccont="~ghca"..temp.."2002"..m..username
  return encodedaccont
end
--print(get_account(arg[1],arg[2]))

function get_account_v07(username,password)
--the encrypt algorithm version 07
--For backup
  local ver="jepyid"
  local temp=string.format("%X",os.time())
  username=string.upper(username)
  local s=ver..username..temp..password
  local m=string.upper(md5sum(s))
  m=string.sub(m,1,20)
  local encodedaccont="~ghca"..temp.."2007"..m..username
  return encodedaccont
end

function pppoe_dial(username,password)

--restore network config file
  local restore="if [ ! -f /etc/config/network ];then cp /root/network.bak /etc/config/network;fi"
  os.execute(restore)
  print("Dialing...")
--print(username)
  local setuser="uci set network.wan.username="..get_account_v07(username,password)
  local setpass="uci set network.wan.password="..password
  os.execute(setuser)
  os.execute(setpass)
  os.execute("uci commit")
  os.execute("/etc/init.d/network restart")
  os.execute("logread|grep pppd |tail -n 20 >/root/ppplog")

--local pppd="pppd plugin rp-pppoe.so mtu 1492 mru 1492"
--if not io.open("/etc/crontabs/root") then
    --cron--
	os.execute("killall -9 crond")
    --local mycron="flag=0;for ip in 126.com 163.com qq.com; do if ping -c 1 $ip | grep 'ttl' >/dev/null;then flag=1; break;fi; done; if [ $flag -eq 0 ] ;then STRD "..username.." "..password.." >/dev/null;fi;"
    local mycron="*/1 * * * * flag=0;for ip in 126.com 163.com qq.com; do if ping -c 1 $ip | grep 'ttl' >/dev/null;then flag=1; break;fi; done; if [ $flag -eq 0 ] ;then sh /etc/rc.local >/dev/null;else cp -f /etc/config/network /root/network.bak;fi; 2>/dev/null"
    --local setcron="*/1 * * * * "..mycron.." 2>/dev/null"
    crontab=io.open("/etc/crontabs/root","w")
    crontab:write(mycron)
    crontab:close()
    local startcron="crond -c /etc/crontabs"
    os.execute(startcron)
--end
      print("Done!")
end


--main--
if arg[1] and arg[2] then
    pppoe_dial(arg[1],arg[2])
else
  print("USAGE:\n    "..arg[0].." USERNAME PASSWORD\n")
end
os.exit(0)
--end main--