CHG: minor fixes to some tnp luascripts

ADD:  a script to make a barebone clone for tnp3 on a chinese magic s50 generation 1 tag.

client/scripts/tnp3clone.lua

@@ -0,0 +1,113 @@
+local cmds = require('commands')
+local getopt = require('getopt')
+local lib14a = require('read14a')
+local utils = require('utils')
+local pre = require('precalc')
+
+local lsh = bit32.lshift
+local rsh = bit32.rshift
+local bor = bit32.bor
+local band = bit32.band
+
+example =[[
+	script run tnp3dump
+	script run tnp3dump -h
+	script run tnp3dump -t aa00
+
+]]
+author = "Iceman"
+usage = "script run tnp3clone -t <toytype>"
+desc =[[
+This script will try making a barebone clone of a tnp3 tag on to a magic generation1 card.
+
+Arguments:
+	-h             : this help
+	-k <key>       : toytype id,  4 hex symbols.
+]]
+
+
+-- This is only meant to be used when errors occur
+function oops(err)
+	print("ERROR: ",err)
+end
+-- Usage help
+function help()
+	print(desc)
+	print("Example usage")
+	print(example)
+end
+
+local function waitCmd()
+	local response = core.WaitForResponseTimeout(cmds.CMD_ACK,2000)
+	if response then
+		local count,cmd,arg0 = bin.unpack('LL',response)
+		if(arg0==1) then
+			local count,arg1,arg2,data = bin.unpack('LLH511',response,count)
+			return data:sub(1,32)
+		else
+			return nil, "Couldn't read block." 
+		end
+	end
+	return nil, "No response from device"
+end
+
+local function readblock( keyA )
+	-- Read block 0
+	cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
+	err = core.SendCommand(cmd:getBytes())
+	if err then return oops(err) end
+	local block0, err = waitCmd()
+	if err then return oops(err) end
+	return block0
+end
+
+local function main(args)
+
+	local numBlocks = 64
+    local cset = 'hf mf csetbl'
+	local empty = '00000000000000000000000000000000'
+	local AccAndKeyB = '7F078869000000000000'
+	-- Defaults to Gusto
+	local toytype = 'C201'
+	
+	-- Arguments for the script
+	for o, a in getopt.getopt(args, 'ht:') do
+		if o == "h" then return help() end		
+		if o == "t" then toytype = a end
+	end
+	
+	if #toytype ~= 4 then return oops('Wrong size in toytype. (4hex symbols)') end	
+	
+	-- find tag
+	result, err = lib14a.read1443a(false)
+	if not result then return oops(err)	end
+
+	-- Show tag info
+	print((' Found tag %s'):format(result.name))
+
+	-- load keys
+	local akeys  = pre.GetAll(result.uid)
+	local  keyA = akeys:sub(1, 12 ) 
+
+	local b0 = readblock(keyA)
+	local b1 = toytype..'000000000000000000000000'
+	
+	local calc = utils.Crc16(b0..b1)
+	local calcEndian = bor(rsh(calc,8), lsh(band(calc, 0xff), 8))
+	
+	local cmd  = ('hf mf csetbl 1 %s%04x'):format( b1, calcEndian)	
+	core.console( cmd) 
+	
+	local pos, key
+	for blockNo = 2, numBlocks-1, 1 do
+		pos = (math.floor( blockNo / 4 ) * 12)+1
+		key = akeys:sub(pos, pos + 11 )
+		if  blockNo%4 ~= 3 then
+			cmd =  ('%s %d %s'):format(cset,blockNo,empty) 
+		else
+			cmd =  ('%s %d %s%s'):format(cset,blockNo,key,AccAndKeyB) 
+		end
+		core.console(cmd)
+	end 
+end
+main(args)