From 220d638d926dfa239e136c470a853f612b5ee1d1 Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Sat, 27 Feb 2016 09:24:40 +0100
Subject: [PATCH 1/1] ADD: started to add a lua script for reading 14b tags, 
 will help when making scripts against iso 14443b tags.

---
 client/lualibs/read14b.lua | 238 +++++++++++++++++++++++++++++++++++++
 1 file changed, 238 insertions(+)
 create mode 100644 client/lualibs/read14b.lua

diff --git a/client/lualibs/read14b.lua b/client/lualibs/read14b.lua
new file mode 100644
index 00000000..dd720fea
--- /dev/null
+++ b/client/lualibs/read14b.lua
@@ -0,0 +1,238 @@
+
+--[[
+	This is a library to read 14443b tags. It can be used something like this
+
+	local reader = require('read14b')
+	result, err = reader.select1443b()
+	if not result then
+		print(err)
+		return
+	end
+	print(result.name)
+
+--]]
+-- Loads the commands-library
+local cmds = require('commands')
+local utils = require('utils')
+local TIMEOUT = 10000 -- Shouldn't take longer than 2 seconds
+
+local function parse1443b_reqb(data)
+	--[[
+	--]]
+	local pcb = data:sub(1,2)
+	local uid = data:sub(3,10)
+	local pps = data:sub(11,18)
+	local ats = data:sub(19,24)
+	local crc = data:sub(25,29)
+	return { pcb = pcb, uid = uid, pps = pps, ats = ats, crc = crc, cid = '' }
+end
+
+local function parse1443b_attrib(data)
+	--[[
+	--]]
+	local attrib = data:sub(1,2)
+	local crc = data:sub(3,7)
+	return { attrib = attrib, crc = crc }
+end
+
+
+--- Sends a USBpacket to the device
+-- @param command - the usb packet to send
+-- @param readresponse - if set to true, we read the device answer packet 
+-- 		which is usually recipe for fail. If not sent, the host will wait 2s for a 
+-- 		response of type CMD_ACK
+-- @return 	packet,nil if successfull
+--			nil, errormessage if unsuccessfull
+local function sendToDevice(cmd, readresponse)
+	core.clearCommandBuffer()
+	local err = core.SendCommand(cmd:getBytes())
+	if err then
+		print(err)
+		return nil, err
+	end
+	if readresponse == 0 then return '',nil end
+	local response = core.WaitForResponseTimeout(cmds.CMD_ACK, TIMEOUT)
+	if response == nil then return nil, nil	end
+	return response,nil
+end
+--- Picks out and displays the data read from a tag
+-- Specifically, takes a usb packet, converts to a Command
+-- (as in commands.lua), takes the data-array and 
+-- reads the number of bytes specified in arg1 (arg0 in c-struct)
+-- and displays the data
+-- @param usbpacket the data received from the device
+local function showData(usbpacket)
+	local response = Command.parse(usbpacket)
+	local len = tonumber(response.arg1) * 2
+	local data = string.sub(response.data, 0, len);
+	print("<< ",data)
+end
+
+---
+-- Sends a usbpackage ,  "hf 14b raw" and the 14bCrc is added to the rawdata before sending
+local function sendRaw(rawdata, readresponse, addcrc)
+	-- add crc first
+	local rawdata_crc = rawdata
+	if ( addcrc == 1) then 
+		rawdata_crc = utils.Crc14b(rawdata)	
+	end
+	print(">> ", rawdata_crc)
+	
+	local command = Command:new{cmd = cmds.CMD_ISO_14443B_COMMAND, 
+								arg1 = #rawdata_crc/2, 	-- LEN of data, which is half the length of the ASCII-string rawdata
+								arg2 = readresponse, 	-- read response
+								arg3 = 1,  				-- leave power on
+								data = rawdata_crc}		-- raw data bytes 
+	return sendToDevice(command, readresponse) 
+end
+
+-- This function does a connect and retrieves some info
+-- @return if successfull: an table containing card info
+-- @return if unsuccessfull : nil, error
+
+-- void SendRawCommand14443B(uint32_t datalen, uint32_t recv, uint8_t powerfield, uint8_t data[])
+local function select1443b()
+
+	local result, infoReqb, infoAttrib, infoPong, err, resp, len, data
+	local goodReqbResponse = false
+	--REQB
+	local p = 5
+	while p > 0 do
+		-- 05 00 08
+		-- 05
+		--   command (REQB/WUPB)
+		-- 00
+		--   AFI application family identifier  ( 00 == all sorts)
+		-- 08  (ie WUPB)
+		--   bit 0-1-2   | N slots  ( 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 == 16)
+		--   bit 3 		 | (1== WUPB, 0 == REQB)  
+		--   bit 4-5-6-7 | AFI application family identifier
+		local result, err = sendRaw('050000', 1, 1)
+		if result then
+			resp = Command.parse( result )
+			len = tonumber(resp.arg1) * 2
+			local data = string.sub(resp.data, 0, len)
+			if ( resp.arg1 == 14 ) then
+				--print ('DATA ::', data)
+				infoReqb, err = parse1443b_reqb(data)
+				--print(infoReqb.pcb, infoReqb.uid, infoReqb.pps, infoReqb.ats, infoReqb.crc)
+				goodReqbResponse = true
+				break -- break while loop. REQB got a good response
+			end
+		end
+		
+		-- send some strange 0A/0C
+		if ( p < 3) then
+			sendRaw('0A', 0, 0)
+			sendRaw('0C', 0, 0)
+		end
+		
+		p = p - 1
+		print('retrying')
+	end
+
+	if goodReqbResponse == false then 
+		err = "No response from card"
+		print(err) 
+		return nil, err	
+	end
+	--SLOT MARKER
+	-- result, err = sendRaw('05', 1, 1)
+	-- if result then
+		-- showData(result)
+		-- resp = Command.parse( result )
+		-- if arg1 == 0 then 
+			-- return nil, "iso14443b card - SLOT MARKER failed"
+		-- end
+		-- len = tonumber(resp.arg1) * 2
+		-- data = string.sub(resp.data, 0, len)
+		-- infoAttrib, err = parse1443b_attrib(data)
+		-- print( infoAttrib.attrib, infoAttrib.crc)		
+	-- else
+		-- err ="No response from card"
+		-- print(err) 
+		-- return nil, err
+	-- end
+	
+	--ATTRIB
+	local cid = '00'
+	result, err = sendRaw('1D'..infoReqb.uid..'000801'..cid, 1, 1)
+	if result then
+		showData(result)
+		resp = Command.parse( result )
+		if resp.arg1 == 0 then 
+			return nil, "iso14443b card - ATTRIB failed"
+		end
+		len = tonumber(resp.arg1) * 2
+		data = string.sub(resp.data, 0, len)
+		infoAttrib, err = parse1443b_attrib(data)
+		infoReqb.cid = infoAttrib.attrib:sub(2,2)
+	else
+		err ="No response from card"
+		print(err) 
+		return nil, err
+	end
+	
+	--PING / PONG - Custom Anticollison for Navigo.
+	local ping = ('BA00')
+	result, err = sendRaw(ping, 1, 1)
+	if result then
+		resp = Command.parse( result )
+		if arg1 == 0 then 
+			return nil, "iso14443b card - PING/PONG failed"
+		end		
+		showData(result)
+	else
+		err = "No response from card"
+		print(err) 
+		return nil, err
+	end
+
+	return infoReqb
+end
+
+---
+-- Waits for a mifare card to be placed within the vicinity of the reader. 
+-- @return if successfull: an table containing card info
+-- @return if unsuccessfull : nil, error
+local function waitFor14443b()
+	print("Waiting for card... press any key to quit")
+	while not core.ukbhit() do
+		res, err = select1443b()
+		if res then return res end
+		-- err means that there was no response from card
+	end
+	return nil, "Aborted by user"
+end
+
+local function disconnect(uid)
+
+	local halt = ('50'..uid) -- 50 UID0 UID1 UID2 UID3 CRC1 CRC2
+	result, err = sendRaw(halt, 1, 1)
+	if result then
+		resp = Command.parse( result )
+		showData(result)  -- expected answer is 00 CRC1 CRC2
+	else
+		err = "No response from card"
+		print(err) 
+		return nil, err
+	end
+
+	-- shutdown raw command / pm3 device.
+	local command = Command:new{ cmd = cmds.CMD_ISO_14443B_COMMAND, arg1 = 0, arg2 = 0, arg3 = 0 }
+	-- We can ignore the response here, no ACK is returned for this command
+	-- Check /armsrc/iso14443b.c, SendRawCommand14443B() for details
+	return sendToDevice(command, 0) 
+end
+
+local library = {
+	select1443b = select1443b,
+	select 	= select1443b,
+	waitFor14443b = waitFor14443b,
+	sendToDevice = sendToDevice,
+	disconnect = disconnect,
+	sendRaw = sendRaw,
+	showData = showData,
+}
+
+return library
\ No newline at end of file
-- 
2.39.5