finish FSK graph index changes
[proxmark3-svn] / client / cmdlfawid.c
1 //-----------------------------------------------------------------------------
2 // Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
3 //
4 // cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
5 //
6 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
7 // at your option, any later version. See the LICENSE.txt file for the text of
8 // the license.
9 //-----------------------------------------------------------------------------
10 // Low frequency AWID26 commands
11 // FSK2a, RF/50, 96 bits (complete)
12 //-----------------------------------------------------------------------------
13
14 #include <string.h>
15 #include <stdio.h> // sscanf
16 #include "proxmark3.h" // Definitions, USB controls, etc
17 #include "cmdlfawid.h"
18 #include "ui.h" // PrintAndLog
19 #include "cmdparser.h" // CmdsParse, CmdsHelp
20 #include "lfdemod.h" // parityTest +
21 #include "util.h" // weigandparity
22 #include "protocols.h" // for T55xx config register definitions
23 #include "cmddata.h" // for printDemod and demodbuffer commands
24 #include "graph.h" // for getFromGraphBuff cmds
25 #include "cmdmain.h"
26
27 static int CmdHelp(const char *Cmd);
28
29 int usage_lf_awid_read(void) {
30 PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
31 PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
32 PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
33 PrintAndLog("");
34 PrintAndLog("Usage: lf awid read ['1']");
35 PrintAndLog("Options : ");
36 PrintAndLog(" 1 : (optional) stop after reading a single card");
37 PrintAndLog("");
38 PrintAndLog("Samples : lf awid read");
39 PrintAndLog(" : lf awid read 1");
40 return 0;
41 }
42
43 int usage_lf_awid_sim(void) {
44 PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
45 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
46 PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
47 PrintAndLog("");
48 PrintAndLog("Usage: lf awid sim <Facility-Code> <Card-Number>");
49 PrintAndLog("Options : ");
50 PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
51 PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
52 PrintAndLog("");
53 PrintAndLog("Sample : lf awid sim 224 1337");
54 return 0;
55 }
56
57 int usage_lf_awid_clone(void) {
58 PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7.");
59 PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process.");
60 PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
61 PrintAndLog("");
62 PrintAndLog("Usage: lf awid clone <Facility-Code> <Card-Number>");
63 PrintAndLog("Options : ");
64 PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
65 PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
66 PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
67 PrintAndLog("");
68 PrintAndLog("Sample : lf awid clone 224 1337");
69 return 0;
70 }
71
72 int CmdAWIDReadFSK(const char *Cmd) {
73 int findone=0;
74 if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_read();
75 if (Cmd[0] == '1') findone = 1;
76
77 UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
78 clearCommandBuffer();
79 SendCommand(&c);
80 return 0;
81 }
82 //by marshmellow
83 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
84 //print full AWID Prox ID and some bit format details if found
85 int CmdFSKdemodAWID(const char *Cmd)
86 {
87 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
88 size_t size = getFromGraphBuf(BitStream);
89 if (size==0) return 0;
90
91 int waveIdx = 0;
92 //get binary from fsk wave
93 int idx = AWIDdemodFSK(BitStream, &size, &waveIdx);
94 if (idx<=0){
95 if (g_debugMode){
96 if (idx == -1)
97 PrintAndLog("DEBUG: Error - not enough samples");
98 else if (idx == -2)
99 PrintAndLog("DEBUG: Error - only noise found");
100 else if (idx == -3)
101 PrintAndLog("DEBUG: Error - problem during FSK demod");
102 else if (idx == -4)
103 PrintAndLog("DEBUG: Error - AWID preamble not found");
104 else if (idx == -5)
105 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
106 else
107 PrintAndLog("DEBUG: Error %d",idx);
108 }
109 return 0;
110 }
111
112 // Index map
113 // 0 10 20 30 40 50 60
114 // | | | | | | |
115 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
116 // -----------------------------------------------------------------------------
117 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
118 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
119 // |---26 bit---| |-----117----||-------------142-------------|
120 // b = format bit len, o = odd parity of last 3 bits
121 // f = facility code, c = card number
122 // w = wiegand parity
123 // (26 bit format shown)
124
125 //get raw ID before removing parities
126 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
127 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
128 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
129 setDemodBuf(BitStream,96,idx);
130 setClockGrid(50, waveIdx + (idx*50));
131
132 size = removeParity(BitStream, idx+8, 4, 1, 88);
133 if (size != 66){
134 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
135 return 0;
136 }
137 // ok valid card found!
138
139 // Index map
140 // 0 10 20 30 40 50 60
141 // | | | | | | |
142 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
143 // -----------------------------------------------------------------------------
144 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
145 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
146 // |26 bit| |-117--| |-----142------|
147 // b = format bit len, o = odd parity of last 3 bits
148 // f = facility code, c = card number
149 // w = wiegand parity
150 // (26 bit format shown)
151
152 uint32_t fc = 0;
153 uint32_t cardnum = 0;
154 uint32_t code1 = 0;
155 uint32_t code2 = 0;
156 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
157 if (fmtLen==26){
158 fc = bytebits_to_byte(BitStream+9, 8);
159 cardnum = bytebits_to_byte(BitStream+17, 16);
160 code1 = bytebits_to_byte(BitStream+8,fmtLen);
161 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
162 } else {
163 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
164 if (fmtLen>32){
165 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
166 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
167 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
168 } else{
169 code1 = bytebits_to_byte(BitStream+8,fmtLen);
170 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
171 }
172 }
173 if (g_debugMode){
174 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
175 printDemodBuff();
176 }
177 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
178 return 1;
179 }
180
181 //refactored by marshmellow
182 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
183 uint8_t pre[66];
184 memset(pre, 0, sizeof(pre));
185 AWIDBits[7]=1;
186 num_to_bytebits(26, 8, pre);
187
188 uint8_t wiegand[24];
189 num_to_bytebits(fc, 8, wiegand);
190 num_to_bytebits(cn, 16, wiegand+8);
191
192 wiegand_add_parity(pre+8, wiegand, 24);
193
194 size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
195 if (bitLen != 88) return 0;
196 //for (uint8_t i = 0; i<3; i++){
197 // PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
198 //}
199 return 1;
200 }
201
202 int CmdAWIDSim(const char *Cmd) {
203 uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
204 uint8_t BitStream[96];
205 uint8_t *bs = BitStream;
206 size_t size = sizeof(BitStream);
207 memset(bs, 0, size);
208
209 uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
210 uint64_t arg2 = 50; // clk RF/50 invert=0
211
212 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
213
214 fcode = (fc & 0x000000FF);
215 cnum = (cn & 0x0000FFFF);
216
217 if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
218 if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
219
220 PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
221 PrintAndLog("Press pm3-button to abort simulation or run another command");
222
223 if (!getAWIDBits(fc, cn, bs)) {
224 PrintAndLog("Error with tag bitstream generation.");
225 return 1;
226 }
227 // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
228 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
229 memcpy(c.d.asBytes, bs, size);
230 clearCommandBuffer();
231 SendCommand(&c);
232 return 0;
233 }
234
235 int CmdAWIDClone(const char *Cmd) {
236 uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
237 uint32_t fc=0,cn=0;
238 uint8_t BitStream[96];
239 uint8_t *bs=BitStream;
240 memset(bs,0,sizeof(BitStream));
241
242 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
243
244 if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
245 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1)<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
246
247 if ((fc & 0xFF) != fc) {
248 fc &= 0xFF;
249 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
250 }
251 if ((cn & 0xFFFF) != cn) {
252 cn &= 0xFFFF;
253 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
254 }
255
256 if ( !getAWIDBits(fc, cn, bs)) {
257 PrintAndLog("Error with tag bitstream generation.");
258 return 1;
259 }
260
261 blocks[1] = bytebits_to_byte(bs,32);
262 blocks[2] = bytebits_to_byte(bs+32,32);
263 blocks[3] = bytebits_to_byte(bs+64,32);
264
265 PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
266 fc, cn);
267 PrintAndLog("Blk | Data ");
268 PrintAndLog("----+------------");
269 PrintAndLog(" 00 | 0x%08x", blocks[0]);
270 PrintAndLog(" 01 | 0x%08x", blocks[1]);
271 PrintAndLog(" 02 | 0x%08x", blocks[2]);
272 PrintAndLog(" 03 | 0x%08x", blocks[3]);
273
274 UsbCommand resp;
275 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
276
277 for (uint8_t i=0; i<4; i++) {
278 c.cmd = CMD_T55XX_WRITE_BLOCK;
279 c.arg[0] = blocks[i];
280 c.arg[1] = i;
281 c.arg[2] = 0;
282 clearCommandBuffer();
283 SendCommand(&c);
284 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
285 PrintAndLog("Error occurred, device did not respond during write operation.");
286 return -1;
287 }
288
289 }
290 return 0;
291 }
292
293 static command_t CommandTable[] = {
294 {"help", CmdHelp, 1, "This help"},
295 {"demod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"},
296 {"read", CmdAWIDReadFSK, 0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"},
297 {"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
298 {"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
299 {NULL, NULL, 0, NULL}
300 };
301
302 int CmdLFAWID(const char *Cmd) {
303 CmdsParse(CommandTable, Cmd);
304 return 0;
305 }
306
307 int CmdHelp(const char *Cmd) {
308 CmdsHelp(CommandTable);
309 return 0;
310 }
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