a2d82b46 |
1 | --[[ |
2 | This is a library to read 14443a tags. It can be used something like this |
3 | |
4 | local reader = require('read14a') |
5 | result, err = reader.read1443a() |
6 | if not result then |
7 | print(err) |
8 | return |
9 | end |
10 | print(result.name) |
11 | |
12 | --]] |
13 | -- Loads the commands-library |
14 | local cmds = require('commands') |
15 | local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds |
16 | local ISO14A_COMMAND = { |
17 | ISO14A_CONNECT = 1, |
18 | ISO14A_NO_DISCONNECT = 2, |
19 | ISO14A_APDU = 4, |
20 | ISO14A_RAW = 8, |
21 | ISO14A_REQUEST_TRIGGER = 0x10, |
22 | ISO14A_APPEND_CRC = 0x20, |
23 | ISO14A_SET_TIMEOUT = 0x40 |
24 | } |
25 | |
26 | local ISO14443a_TYPES = {} |
27 | ISO14443a_TYPES[0x00] = "NXP MIFARE Ultralight | Ultralight C" |
28 | ISO14443a_TYPES[0x04] = "NXP MIFARE (various !DESFire !DESFire EV1)" |
29 | ISO14443a_TYPES[0x08] = "NXP MIFARE CLASSIC 1k | Plus 2k" |
30 | ISO14443a_TYPES[0x09] = "NXP MIFARE Mini 0.3k" |
31 | ISO14443a_TYPES[0x10] = "NXP MIFARE Plus 2k" |
32 | ISO14443a_TYPES[0x11] = "NXP MIFARE Plus 4k" |
33 | ISO14443a_TYPES[0x18] = "NXP MIFARE Classic 4k | Plus 4k" |
34 | ISO14443a_TYPES[0x20] = "NXP MIFARE DESFire 4k | DESFire EV1 2k/4k/8k | Plus 2k/4k | JCOP 31/41" |
35 | ISO14443a_TYPES[0x24] = "NXP MIFARE DESFire | DESFire EV1" |
36 | ISO14443a_TYPES[0x28] = "JCOP31 or JCOP41 v2.3.1" |
37 | ISO14443a_TYPES[0x38] = "Nokia 6212 or 6131 MIFARE CLASSIC 4K" |
38 | ISO14443a_TYPES[0x88] = "Infineon MIFARE CLASSIC 1K" |
39 | ISO14443a_TYPES[0x98] = "Gemplus MPCOS" |
40 | |
41 | |
42 | local function tostring_1443a(sak) |
43 | return ISO14443a_TYPES[sak] or ("Unknown (SAK=%x)"):format(sak) |
44 | end |
45 | |
46 | local function parse1443a(data) |
47 | --[[ |
48 | |
49 | Based on this struct : |
50 | |
51 | typedef struct { |
52 | byte_t uid[10]; |
53 | byte_t uidlen; |
54 | byte_t atqa[2]; |
55 | byte_t sak; |
56 | byte_t ats_len; |
57 | byte_t ats[256]; |
58 | } __attribute__((__packed__)) iso14a_card_select_t; |
59 | |
60 | --]] |
61 | |
62 | local count,uid,uidlen, atqa, sak, ats_len, ats= bin.unpack('H10CH2CC',data) |
63 | uid = uid:sub(1,2*uidlen) |
64 | --print("uid, atqa, sak: ",uid, atqa, sak) |
65 | --print("TYPE: ", tostring_1443a(sak)) |
66 | return { uid = uid, atqa = atqa, sak = sak, name = tostring_1443a(sak)} |
67 | end |
68 | |
b61f426c |
69 | --- Sends a USBpacket to the device |
70 | -- @param command - the usb packet to send |
71 | -- @param ignoreresponse - if set to true, we don't read the device answer packet |
72 | -- which is usually recipe for fail. If not sent, the host will wait 2s for a |
73 | -- response of type CMD_ACK |
74 | -- @return packet,nil if successfull |
75 | -- nil, errormessage if unsuccessfull |
76 | |
77 | local function sendToDevice(command, ignoreresponse) |
78 | core.clearCommandBuffer() |
79 | local err = core.SendCommand(command:getBytes()) |
80 | if err then |
81 | print(err) |
82 | return nil, err |
83 | end |
84 | if ignoreresponse then return nil,nil end |
85 | |
86 | local response = core.WaitForResponseTimeout(cmds.CMD_ACK,TIMEOUT) |
87 | return response,nil |
88 | end |
89 | |
90 | |
a2d82b46 |
91 | local library = { |
b61f426c |
92 | -- This function does a connect. |
93 | -- @param dont_disconnect - if true, does not disable the field |
94 | read1443a = function(dont_disconnect) |
95 | |
a2d82b46 |
96 | local command, result, info, err, data |
97 | |
a2d82b46 |
98 | command = Command:new{cmd = cmds.CMD_READER_ISO_14443a, |
99 | arg1 = ISO14A_COMMAND.ISO14A_CONNECT} |
b61f426c |
100 | if dont_disconnect then |
101 | command.arg1 = command.arg1 + ISO14A_COMMAND.ISO14A_NO_DISCONNECT |
ea833d39 |
102 | end |
b61f426c |
103 | local result,err = sendToDevice(command) |
a2d82b46 |
104 | if result then |
105 | local count,cmd,arg0,arg1,arg2 = bin.unpack('LLLL',result) |
106 | if arg0 == 0 then |
a2d82b46 |
107 | return nil, "iso14443a card select failed" |
108 | end |
109 | data = string.sub(result,count) |
110 | info, err = parse1443a(data) |
111 | else |
112 | err ="No response from card" |
113 | end |
114 | |
115 | if err then |
116 | print(err) |
117 | return nil, err |
118 | end |
119 | return info |
b61f426c |
120 | end, |
121 | parse1443a = parse1443a, |
122 | sendToDevice = sendToDevice, |
123 | ISO14A_COMMAND = ISO14A_COMMAND, |
a2d82b46 |
124 | } |
125 | |
126 | return library |