git.zerfleddert.de Git - proxmark3-svn/blob - client/lualibs/read14b.lua

   1
   2 --[[
   3         This is a library to read 14443b tags. It can be used something like this
   4
   5         local reader = require('read14b')
   6         result, err = reader.select1443b()
   7         if not result then
   8                 print(err)
   9                 return
  10         end
  11         print(result.name)
  12
  13 --]]
  14 -- Loads the commands-library
  15 local cmds = require('commands')
  16 local utils = require('utils')
  17 local TIMEOUT = 10000 -- Shouldn't take longer than 2 seconds
  18
  19 local function parse1443b_reqb(data)
  20         --[[
  21         --]]
  22         local pcb = data:sub(1,2)
  23         local uid = data:sub(3,10)
  24         local pps = data:sub(11,18)
  25         local ats = data:sub(19,24)
  26         local crc = data:sub(25,29)
  27         return { pcb = pcb, uid = uid, pps = pps, ats = ats, crc = crc, cid = '' }
  28 end
  29
  30 local function parse1443b_attrib(data)
  31         --[[
  32         --]]
  33         local attrib = data:sub(1,2)
  34         local crc = data:sub(3,7)
  35         return { attrib = attrib, crc = crc }
  36 end
  37
  38
  39 --- Sends a USBpacket to the device
  40 -- @param command - the usb packet to send
  41 -- @param readresponse - if set to true, we read the device answer packet
  42 --              which is usually recipe for fail. If not sent, the host will wait 2s for a
  43 --              response of type CMD_ACK
  44 -- @return      packet,nil if successfull
  45 --                      nil, errormessage if unsuccessfull
  46 local function sendToDevice(cmd, readresponse)
  47         core.clearCommandBuffer()
  48         local err = core.SendCommand(cmd:getBytes())
  49         if err then
  50                 print(err)
  51                 return nil, err
  52         end
  53         if readresponse == 0 then return '',nil end
  54         local response = core.WaitForResponseTimeout(cmds.CMD_ACK, TIMEOUT)
  55         if response == nil then return nil, nil end
  56         return response,nil
  57 end
  58 --- Picks out and displays the data read from a tag
  59 -- Specifically, takes a usb packet, converts to a Command
  60 -- (as in commands.lua), takes the data-array and
  61 -- reads the number of bytes specified in arg1 (arg0 in c-struct)
  62 -- and displays the data
  63 -- @param usbpacket the data received from the device
  64 local function showData(usbpacket)
  65         local response = Command.parse(usbpacket)
  66         local len = tonumber(response.arg1) * 2
  67         local data = string.sub(response.data, 0, len);
  68         print("<< ",data)
  69 end
  70
  71 ---
  72 -- Sends a usbpackage ,  "hf 14b raw" and the 14bCrc is added to the rawdata before sending
  73 local function sendRaw(rawdata, readresponse, addcrc)
  74         -- add crc first
  75         local rawdata_crc = rawdata
  76         if ( addcrc == 1) then
  77                 rawdata_crc = utils.Crc14b(rawdata)
  78         end
  79         print(">> ", rawdata_crc)
  80
  81         local command = Command:new{cmd = cmds.CMD_ISO_14443B_COMMAND,
  82                                                                 arg1 = #rawdata_crc/2,  -- LEN of data, which is half the length of the ASCII-string rawdata
  83                                                                 arg2 = readresponse,    -- read response
  84                                                                 arg3 = 1,                               -- leave power on
  85                                                                 data = rawdata_crc}             -- raw data bytes
  86         return sendToDevice(command, readresponse)
  87 end
  88
  89 -- This function does a connect and retrieves some info
  90 -- @return if successfull: an table containing card info
  91 -- @return if unsuccessfull : nil, error
  92
  93 -- void SendRawCommand14443B(uint32_t datalen, uint32_t recv, uint8_t powerfield, uint8_t data[])
  94 local function select1443b()
  95
  96         local result, infoReqb, infoAttrib, infoPong, err, resp, len, data
  97         local goodReqbResponse = false
  98         --REQB
  99         local p = 20
 100         while p > 0 do
 101                 -- 05 00 08
 102                 -- 05
 103                 --   command (REQB/WUPB)
 104                 -- 00
 105                 --   AFI application family identifier  ( 00 == all sorts)
 106                 -- 08  (ie WUPB)
 107                 --   bit 0-1-2   | N slots  ( 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 == 16)
 108                 --   bit 3               | (1== WUPB, 0 == REQB)
 109                 --   bit 4-5-6-7 | AFI application family identifier
 110                 local result, err = sendRaw('050008', 1, 1)
 111                 if result then
 112                         resp = Command.parse( result )
 113                         len = tonumber(resp.arg1) * 2
 114                         local data = string.sub(resp.data, 0, len)
 115                         if ( resp.arg1 == 14 ) then
 116                                 --print ('DATA ::', data)
 117                                 infoReqb, err = parse1443b_reqb(data)
 118                                 --print(infoReqb.pcb, infoReqb.uid, infoReqb.pps, infoReqb.ats, infoReqb.crc)
 119                                 goodReqbResponse = true
 120                                 break -- break while loop. REQB got a good response
 121                         end
 122                 end
 123
 124                 -- send some strange 0A/0C
 125                 -- if ( p < 3) then
 126                         -- sendRaw('0A', 0, 0)
 127                         -- sendRaw('0C', 0, 0)
 128                 -- end
 129
 130                 p = p - 1
 131                 print('retrying')
 132         end
 133
 134         if goodReqbResponse == false then
 135                 err = "No response from card"
 136                 print(err)
 137                 return nil, err
 138         end
 139         --SLOT MARKER
 140         -- result, err = sendRaw('05', 1, 1)
 141         -- if result then
 142                 -- showData(result)
 143                 -- resp = Command.parse( result )
 144                 -- if arg1 == 0 then
 145                         -- return nil, "iso14443b card - SLOT MARKER failed"
 146                 -- end
 147                 -- len = tonumber(resp.arg1) * 2
 148                 -- data = string.sub(resp.data, 0, len)
 149                 -- infoAttrib, err = parse1443b_attrib(data)
 150                 -- print( infoAttrib.attrib, infoAttrib.crc)
 151         -- else
 152                 -- err ="No response from card"
 153                 -- print(err)
 154                 -- return nil, err
 155         -- end
 156
 157         --ATTRIB
 158         local cid = '00'
 159         result, err = sendRaw('1D'..infoReqb.uid..'000801'..cid, 1, 1)
 160         if result then
 161                 showData(result)
 162                 resp = Command.parse( result )
 163                 if resp.arg1 == 0 then
 164                         return nil, "iso14443b card - ATTRIB failed"
 165                 end
 166                 len = tonumber(resp.arg1) * 2
 167                 data = string.sub(resp.data, 0, len)
 168                 infoAttrib, err = parse1443b_attrib(data)
 169                 infoReqb.cid = infoAttrib.attrib:sub(2,2)
 170         else
 171                 err ="No response from card"
 172                 print(err)
 173                 return nil, err
 174         end
 175
 176         --PING / PONG - Custom Anticollison for Navigo.
 177         local ping = ('BA00')
 178         result, err = sendRaw(ping, 1, 1)
 179         if result then
 180                 resp = Command.parse( result )
 181                 if arg1 == 0 then
 182                         return nil, "iso14443b card - PING/PONG failed"
 183                 end
 184                 showData(result)
 185         else
 186                 err = "No response from card"
 187                 print(err)
 188                 return nil, err
 189         end
 190
 191         return infoReqb
 192 end
 193
 194 ---
 195 -- Waits for a mifare card to be placed within the vicinity of the reader.
 196 -- @return if successfull: an table containing card info
 197 -- @return if unsuccessfull : nil, error
 198 local function waitFor14443b()
 199         print("Waiting for card... press any key to quit")
 200         while not core.ukbhit() do
 201                 res, err = select1443b()
 202                 if res then return res end
 203                 if res == nil then return nil, err end
 204                 -- err means that there was no response from card
 205         end
 206         return nil, "Aborted by user"
 207 end
 208
 209 local function disconnect(uid)
 210
 211         local halt = ('50'..uid) -- 50 UID0 UID1 UID2 UID3 CRC1 CRC2
 212         result, err = sendRaw(halt, 1, 1)
 213         if result then
 214                 resp = Command.parse( result )
 215                 showData(result)  -- expected answer is 00 CRC1 CRC2
 216         else
 217                 err = "No response from card"
 218                 print(err)
 219                 return nil, err
 220         end
 221
 222         -- shutdown raw command / pm3 device.
 223         local command = Command:new{ cmd = cmds.CMD_ISO_14443B_COMMAND, arg1 = 0, arg2 = 0, arg3 = 0 }
 224         -- We can ignore the response here, no ACK is returned for this command
 225         -- Check /armsrc/iso14443b.c, SendRawCommand14443B() for details
 226         return sendToDevice(command, 0)
 227 end
 228
 229 local library = {
 230         select1443b = select1443b,
 231         select  = select1443b,
 232         waitFor14443b = waitFor14443b,
 233         sendToDevice = sendToDevice,
 234         disconnect = disconnect,
 235         sendRaw = sendRaw,
 236         showData = showData,
 237 }
 238
 239 return library