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CHG: updated README.txt with VISA2000
[proxmark3-svn] / client / cmdlf.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Low frequency commands
9 //-----------------------------------------------------------------------------
10 #include "cmdlf.h"
11 static int CmdHelp(const char *Cmd);
12
13 int usage_lf_cmdread(void) {
14 PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H]");
15 PrintAndLog("Options:");
16 PrintAndLog(" h This help");
17 PrintAndLog(" L Low frequency (125 KHz)");
18 PrintAndLog(" H High frequency (134 KHz)");
19 PrintAndLog(" d <delay> delay OFF period, (decimal)");
20 PrintAndLog(" z <zero> time period ZERO, (decimal)");
21 PrintAndLog(" o <one> time period ONE, (decimal)");
22 PrintAndLog(" c <cmd> Command bytes (in ones and zeros)");
23 PrintAndLog(" ************* All periods in microseconds (ms)");
24 PrintAndLog("Examples:");
25 PrintAndLog(" lf cmdread d 80 z 100 o 200 c 11000");
26 PrintAndLog(" lf cmdread d 80 z 100 o 100 c 11000 H");
27 return 0;
28 }
29 int usage_lf_read(void){
30 PrintAndLog("Usage: lf read [h] [s]");
31 PrintAndLog("Options:");
32 PrintAndLog(" h This help");
33 PrintAndLog(" s silent run no printout");
34 PrintAndLog("This function takes no arguments. ");
35 PrintAndLog("Use 'lf config' to set parameters.");
36 return 0;
37 }
38 int usage_lf_snoop(void) {
39 PrintAndLog("Usage: lf snoop");
40 PrintAndLog("Options:");
41 PrintAndLog(" h This help");
42 PrintAndLog("This function takes no arguments. ");
43 PrintAndLog("Use 'lf config' to set parameters.");
44 return 0;
45 }
46 int usage_lf_config(void) {
47 PrintAndLog("Usage: lf config [h] [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
48 PrintAndLog("Options:");
49 PrintAndLog(" h This help");
50 PrintAndLog(" L Low frequency (125 KHz)");
51 PrintAndLog(" H High frequency (134 KHz)");
52 PrintAndLog(" q <divisor> Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
53 PrintAndLog(" b <bps> Sets resolution of bits per sample. Default (max): 8");
54 PrintAndLog(" d <decim> Sets decimation. A value of N saves only 1 in N samples. Default: 1");
55 PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1");
56 PrintAndLog(" t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
57 PrintAndLog("Examples:");
58 PrintAndLog(" lf config b 8 L");
59 PrintAndLog(" Samples at 125KHz, 8bps.");
60 PrintAndLog(" lf config H b 4 d 3");
61 PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with ");
62 PrintAndLog(" a resolution of 4 bits per sample.");
63 PrintAndLog(" lf read");
64 PrintAndLog(" Performs a read (active field)");
65 PrintAndLog(" lf snoop");
66 PrintAndLog(" Performs a snoop (no active field)");
67 return 0;
68 }
69 int usage_lf_simfsk(void) {
70 PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
71 PrintAndLog("Options:");
72 PrintAndLog(" h This help");
73 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
74 PrintAndLog(" i invert data");
75 PrintAndLog(" H <fcHigh> Manually set the larger Field Clock");
76 PrintAndLog(" L <fcLow> Manually set the smaller Field Clock");
77 //PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
78 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
79 PrintAndLog("\n NOTE: if you set one clock manually set them all manually");
80 return 0;
81 }
82 int usage_lf_simask(void) {
83 PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
84 PrintAndLog("Options:");
85 PrintAndLog(" h This help");
86 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
87 PrintAndLog(" i invert data");
88 PrintAndLog(" b sim ask/biphase");
89 PrintAndLog(" m sim ask/manchester - Default");
90 PrintAndLog(" r sim ask/raw");
91 PrintAndLog(" s add t55xx Sequence Terminator gap - default: no gaps (only manchester)");
92 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
93 return 0;
94 }
95 int usage_lf_simpsk(void) {
96 PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
97 PrintAndLog("Options:");
98 PrintAndLog(" h This help");
99 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
100 PrintAndLog(" i invert data");
101 PrintAndLog(" 1 set PSK1 (default)");
102 PrintAndLog(" 2 set PSK2");
103 PrintAndLog(" 3 set PSK3");
104 PrintAndLog(" r <carrier> 2|4|8 are valid carriers: default = 2");
105 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
106 return 0;
107 }
108 int usage_lf_find(void){
109 PrintAndLog("Usage: lf search [h] <0|1> [u]");
110 PrintAndLog("");
111 PrintAndLog("Options:");
112 PrintAndLog(" h This help");
113 PrintAndLog(" <0|1> Use data from Graphbuffer, if not set, try reading data from tag.");
114 PrintAndLog(" u Search for Unknown tags, if not set, reads only known tags.");
115 PrintAndLog("Examples:");
116 PrintAndLog(" lf search = try reading data from tag & search for known tags");
117 PrintAndLog(" lf search 1 = use data from GraphBuffer & search for known tags");
118 PrintAndLog(" lf search u = try reading data from tag & search for known and unknown tags");
119 PrintAndLog(" lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
120 return 0;
121 }
122
123
124 /* send a LF command before reading */
125 int CmdLFCommandRead(const char *Cmd) {
126
127 bool errors = FALSE;
128 bool useHighFreq = FALSE;
129 uint16_t one = 0, zero = 0;
130 uint8_t cmdp = 0;
131 UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K, {0,0,0}};
132
133 while(param_getchar(Cmd, cmdp) != 0x00) {
134 switch(param_getchar(Cmd, cmdp)) {
135 case 'h':
136 return usage_lf_cmdread();
137 case 'H':
138 useHighFreq = TRUE;
139 cmdp++;
140 break;
141 case 'L':
142 cmdp++;
143 break;
144 case 'c':
145 param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes);
146 cmdp+=2;
147 break;
148 case 'd':
149 c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
150 cmdp+=2;
151 break;
152 case 'z':
153 zero = param_get32ex(Cmd, cmdp+1, 0, 10) & 0xFFFF;
154 cmdp+=2;
155 break;
156 case 'o':
157 one = param_get32ex(Cmd, cmdp+1, 0, 10) & 0xFFFF;
158 cmdp+=2;
159 break;
160 default:
161 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
162 errors = 1;
163 break;
164 }
165 if(errors) break;
166 }
167 // No args
168 if (cmdp == 0) errors = TRUE;
169
170 //Validations
171 if (errors) return usage_lf_cmdread();
172
173 // zero and one lengths
174 c.arg[1] = (uint32_t)(zero << 16 | one);
175
176 // add frequency 125 or 134
177 c.arg[2] = useHighFreq;
178
179 clearCommandBuffer();
180 SendCommand(&c);
181 return 0;
182 }
183
184 int CmdFlexdemod(const char *Cmd)
185 {
186 #define LONG_WAIT 100
187 int i, j, start, bit, sum;
188 int phase = 0;
189
190 for (i = 0; i < GraphTraceLen; ++i)
191 GraphBuffer[i] = (GraphBuffer[i] < 0) ? -1 : 1;
192
193 for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
194 int first = GraphBuffer[start];
195 for (i = start; i < start + LONG_WAIT; i++) {
196 if (GraphBuffer[i] != first) {
197 break;
198 }
199 }
200 if (i == (start + LONG_WAIT))
201 break;
202 }
203
204 if (start == GraphTraceLen - LONG_WAIT) {
205 PrintAndLog("nothing to wait for");
206 return 0;
207 }
208
209 GraphBuffer[start] = 2;
210 GraphBuffer[start+1] = -2;
211 uint8_t bits[64] = {0x00};
212
213 i = start;
214 for (bit = 0; bit < 64; bit++) {
215 sum = 0;
216 for (int j = 0; j < 16; j++) {
217 sum += GraphBuffer[i++];
218 }
219 bits[bit] = (sum > 0) ? 1 : 0;
220 PrintAndLog("bit %d sum %d", bit, sum);
221 }
222
223 for (bit = 0; bit < 64; bit++) {
224 sum = 0;
225 for (j = 0; j < 16; j++)
226 sum += GraphBuffer[i++];
227
228 if (sum > 0 && bits[bit] != 1) PrintAndLog("oops1 at %d", bit);
229
230 if (sum < 0 && bits[bit] != 0) PrintAndLog("oops2 at %d", bit);
231
232 }
233
234 // HACK writing back to graphbuffer.
235 GraphTraceLen = 32*64;
236 i = 0;
237 for (bit = 0; bit < 64; bit++) {
238
239 phase = (bits[bit] == 0) ? 0 : 1;
240
241 for (j = 0; j < 32; j++) {
242 GraphBuffer[i++] = phase;
243 phase = !phase;
244 }
245 }
246 RepaintGraphWindow();
247 return 0;
248 }
249
250 int CmdIndalaDemod(const char *Cmd)
251 {
252 // PSK1, Bitrate 32,
253
254 // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
255 int state = -1;
256 int count = 0;
257 int i, j;
258
259 // worst case with GraphTraceLen=64000 is < 4096
260 // under normal conditions it's < 2048
261 uint8_t rawbits[4096];
262
263 int rawbit = 0, worst = 0, worstPos = 0;
264 // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
265
266 // loop through raw signal - since we know it is psk1 rf/32 fc/2 skip every other value (+=2)
267 for (i = 0; i < GraphTraceLen-1; i += 2) {
268 count += 1;
269 if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
270 // appears redundant - marshmellow
271 if (state == 0) {
272 for (j = 0; j < count - 8; j += 16) {
273 rawbits[rawbit++] = 0;
274 }
275 if ((abs(count - j)) > worst) {
276 worst = abs(count - j);
277 worstPos = i;
278 }
279 }
280 state = 1;
281 count = 0;
282 } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
283 //appears redundant
284 if (state == 1) {
285 for (j = 0; j < count - 8; j += 16) {
286 rawbits[rawbit++] = 1;
287 }
288 if ((abs(count - j)) > worst) {
289 worst = abs(count - j);
290 worstPos = i;
291 }
292 }
293 state = 0;
294 count = 0;
295 }
296 }
297 if ( rawbit<1 ) return 0;
298
299 if (g_debugMode) {
300 PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
301 PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
302 }
303
304 // Finding the start of a UID
305 int uidlen, long_wait;
306 if (strcmp(Cmd, "224") == 0) {
307 uidlen = 224;
308 long_wait = 30;
309 } else {
310 uidlen = 64;
311 long_wait = 29;
312 }
313
314 int start;
315 int first = 0;
316 for (start = 0; start <= rawbit - uidlen; start++) {
317 first = rawbits[start];
318 for (i = start; i < start + long_wait; i++) {
319 if (rawbits[i] != first) {
320 break;
321 }
322 }
323 if (i == (start + long_wait)) {
324 break;
325 }
326 }
327
328 if (start == rawbit - uidlen + 1) {
329 if (g_debugMode) PrintAndLog("nothing to wait for");
330 return 0;
331 }
332
333 // Inverting signal if needed
334 if (first == 1) {
335 for (i = start; i < rawbit; i++)
336 rawbits[i] = !rawbits[i];
337 }
338
339 // Dumping UID
340 uint8_t bits[224] = {0x00};
341 char showbits[225] = {0x00};
342 int bit;
343 i = start;
344 int times = 0;
345
346 if (uidlen > rawbit) {
347 PrintAndLog("Warning: not enough raw bits to get a full UID");
348 for (bit = 0; bit < rawbit; bit++) {
349 bits[bit] = rawbits[i++];
350 // As we cannot know the parity, let's use "." and "/"
351 showbits[bit] = '.' + bits[bit];
352 }
353 showbits[bit+1]='\0';
354 PrintAndLog("Partial UID=%s", showbits);
355 return 0;
356 } else {
357 for (bit = 0; bit < uidlen; bit++) {
358 bits[bit] = rawbits[i++];
359 showbits[bit] = '0' + bits[bit];
360 }
361 times = 1;
362 }
363
364 //convert UID to HEX
365 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
366 int idx;
367 uid1 = uid2 = 0;
368
369 if (uidlen==64){
370 for( idx=0; idx<64; idx++) {
371 if (showbits[idx] == '0') {
372 uid1 = (uid1<<1) | (uid2>>31);
373 uid2 = (uid2<<1) | 0;
374 } else {
375 uid1 = (uid1<<1) | (uid2>>31);
376 uid2 = (uid2<<1) | 1;
377 }
378 }
379 PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
380 } else {
381 uid3 = uid4 = uid5 = uid6 = uid7 = 0;
382
383 for( idx=0; idx<224; idx++) {
384 uid1 = (uid1<<1) | (uid2>>31);
385 uid2 = (uid2<<1) | (uid3>>31);
386 uid3 = (uid3<<1) | (uid4>>31);
387 uid4 = (uid4<<1) | (uid5>>31);
388 uid5 = (uid5<<1) | (uid6>>31);
389 uid6 = (uid6<<1) | (uid7>>31);
390
391 if (showbits[idx] == '0')
392 uid7 = (uid7<<1) | 0;
393 else
394 uid7 = (uid7<<1) | 1;
395 }
396 PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
397 }
398
399 // Checking UID against next occurrences
400 int failed = 0;
401 for (; i + uidlen <= rawbit;) {
402 failed = 0;
403 for (bit = 0; bit < uidlen; bit++) {
404 if (bits[bit] != rawbits[i++]) {
405 failed = 1;
406 break;
407 }
408 }
409 if (failed == 1) {
410 break;
411 }
412 times += 1;
413 }
414
415 if (g_debugMode) PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
416
417 // Remodulating for tag cloning
418 // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
419 // since this changes graphbuffer data.
420 GraphTraceLen = 32 * uidlen;
421 i = 0;
422 int phase = 0;
423 for (bit = 0; bit < uidlen; bit++) {
424 phase = (bits[bit] == 0) ? 0 : 1;
425 int j;
426 for (j = 0; j < 32; j++) {
427 GraphBuffer[i++] = phase;
428 phase = !phase;
429 }
430 }
431
432 RepaintGraphWindow();
433 return 1;
434 }
435
436 int CmdIndalaClone(const char *Cmd){
437 UsbCommand c;
438 unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
439
440 uid1 = uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
441 int n = 0, i = 0;
442
443 if (strchr(Cmd,'l') != 0) {
444 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
445 uid1 = (uid1 << 4) | (uid2 >> 28);
446 uid2 = (uid2 << 4) | (uid3 >> 28);
447 uid3 = (uid3 << 4) | (uid4 >> 28);
448 uid4 = (uid4 << 4) | (uid5 >> 28);
449 uid5 = (uid5 << 4) | (uid6 >> 28);
450 uid6 = (uid6 << 4) | (uid7 >> 28);
451 uid7 = (uid7 << 4) | (n & 0xf);
452 }
453 PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
454 c.cmd = CMD_INDALA_CLONE_TAG_L;
455 c.d.asDwords[0] = uid1;
456 c.d.asDwords[1] = uid2;
457 c.d.asDwords[2] = uid3;
458 c.d.asDwords[3] = uid4;
459 c.d.asDwords[4] = uid5;
460 c.d.asDwords[5] = uid6;
461 c.d.asDwords[6] = uid7;
462 } else {
463 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
464 uid1 = (uid1 << 4) | (uid2 >> 28);
465 uid2 = (uid2 << 4) | (n & 0xf);
466 }
467 PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
468 c.cmd = CMD_INDALA_CLONE_TAG;
469 c.arg[0] = uid1;
470 c.arg[1] = uid2;
471 }
472
473 clearCommandBuffer();
474 SendCommand(&c);
475 return 0;
476 }
477
478 int CmdLFSetConfig(const char *Cmd) {
479 uint8_t divisor = 0;//Frequency divisor
480 uint8_t bps = 0; // Bits per sample
481 uint8_t decimation = 0; //How many to keep
482 bool averaging = 1; // Defaults to true
483 bool errors = FALSE;
484 int trigger_threshold = -1;//Means no change
485 uint8_t unsigned_trigg = 0;
486
487 uint8_t cmdp = 0;
488 while(param_getchar(Cmd, cmdp) != 0x00) {
489 switch(param_getchar(Cmd, cmdp)) {
490 case 'h':
491 return usage_lf_config();
492 case 'H':
493 divisor = 88;
494 cmdp++;
495 break;
496 case 'L':
497 divisor = 95;
498 cmdp++;
499 break;
500 case 'q':
501 errors |= param_getdec(Cmd,cmdp+1,&divisor);
502 cmdp+=2;
503 break;
504 case 't':
505 errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg);
506 cmdp+=2;
507 if(!errors) trigger_threshold = unsigned_trigg;
508 break;
509 case 'b':
510 errors |= param_getdec(Cmd,cmdp+1,&bps);
511 cmdp+=2;
512 break;
513 case 'd':
514 errors |= param_getdec(Cmd,cmdp+1,&decimation);
515 cmdp+=2;
516 break;
517 case 'a':
518 averaging = param_getchar(Cmd,cmdp+1) == '1';
519 cmdp+=2;
520 break;
521 default:
522 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
523 errors = 1;
524 break;
525 }
526 if(errors) break;
527 }
528
529 // No args
530 if (cmdp == 0) errors = 1;
531
532 //Validations
533 if (errors) return usage_lf_config();
534
535 //Bps is limited to 8, so fits in lower half of arg1
536 if (bps >> 4) bps = 8;
537
538 sample_config config = { decimation, bps, averaging, divisor, trigger_threshold };
539
540 //Averaging is a flag on high-bit of arg[1]
541 UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
542 memcpy(c.d.asBytes,&config,sizeof(sample_config));
543 clearCommandBuffer();
544 SendCommand(&c);
545 return 0;
546 }
547
548 int CmdLFRead(const char *Cmd) {
549 bool arg1 = false;
550 uint8_t cmdp = param_getchar(Cmd, 0);
551
552 if ( cmdp == 'h' || cmdp == 'H') return usage_lf_read();
553
554 //suppress print
555 if ( cmdp == 's' || cmdp == 'S') arg1 = true;
556
557 UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
558 clearCommandBuffer();
559 SendCommand(&c);
560 if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
561 PrintAndLog("command execution time out");
562 return 1;
563 }
564 return 0;
565 }
566
567 int CmdLFSnoop(const char *Cmd) {
568 uint8_t cmdp = param_getchar(Cmd, 0);
569 if(cmdp == 'h' || cmdp == 'H') return usage_lf_snoop();
570
571 UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
572 clearCommandBuffer();
573 SendCommand(&c);
574 WaitForResponse(CMD_ACK,NULL);
575 return 0;
576 }
577
578 static void ChkBitstream(const char *str) {
579 // convert to bitstream if necessary
580 for (int i = 0; i < (int)(GraphTraceLen / 2); i++){
581 if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
582 CmdGetBitStream("");
583 break;
584 }
585 }
586 }
587 //Attempt to simulate any wave in buffer (one bit per output sample)
588 // converts GraphBuffer to bitstream (based on zero crossings) if needed.
589 int CmdLFSim(const char *Cmd) {
590 int i,j;
591 static int gap;
592
593 sscanf(Cmd, "%i", &gap);
594
595 // convert to bitstream if necessary
596 ChkBitstream(Cmd);
597
598 if (g_debugMode)
599 printf("DEBUG: Sending [%d bytes]\n", GraphTraceLen);
600
601 //can send only 512 bits at a time (1 byte sent per bit...)
602 for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
603 UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
604
605 for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
606 c.d.asBytes[j] = GraphBuffer[i+j];
607 }
608 clearCommandBuffer();
609 SendCommand(&c);
610 WaitForResponse(CMD_ACK, NULL);
611 printf(".");
612 }
613
614 PrintAndLog("Starting to simulate");
615
616 UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
617 clearCommandBuffer();
618 SendCommand(&c);
619 return 0;
620 }
621
622 // by marshmellow - sim fsk data given clock, fcHigh, fcLow, invert
623 // - allow pull data from DemodBuffer
624 int CmdLFfskSim(const char *Cmd)
625 {
626 //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
627 // otherwise will need FChigh, FClow, Clock, and bitstream
628 uint8_t fcHigh = 0, fcLow = 0, clk = 0;
629 uint8_t invert = 0;
630 bool errors = FALSE;
631 char hexData[32] = {0x00}; // store entered hex data
632 uint8_t data[255] = {0x00};
633 int dataLen = 0;
634 uint8_t cmdp = 0;
635
636 while(param_getchar(Cmd, cmdp) != 0x00) {
637 switch(param_getchar(Cmd, cmdp)){
638 case 'h':
639 return usage_lf_simfsk();
640 case 'i':
641 invert = 1;
642 cmdp++;
643 break;
644 case 'c':
645 errors |= param_getdec(Cmd, cmdp+1, &clk);
646 cmdp += 2;
647 break;
648 case 'H':
649 errors |= param_getdec(Cmd, cmdp+1, &fcHigh);
650 cmdp += 2;
651 break;
652 case 'L':
653 errors |= param_getdec(Cmd, cmdp+1, &fcLow);
654 cmdp += 2;
655 break;
656 //case 's':
657 // separator = 1;
658 // cmdp++;
659 // break;
660 case 'd':
661 dataLen = param_getstr(Cmd, cmdp+1, hexData);
662 if (dataLen == 0)
663 errors = TRUE;
664 else
665 dataLen = hextobinarray((char *)data, hexData);
666
667 if (dataLen == 0) errors = TRUE;
668 if (errors) PrintAndLog ("Error getting hex data");
669 cmdp+=2;
670 break;
671 default:
672 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
673 errors = TRUE;
674 break;
675 }
676 if(errors) break;
677 }
678
679 // No args
680 if(cmdp == 0 && DemodBufferLen == 0)
681 errors = TRUE;
682
683 //Validations
684 if(errors) return usage_lf_simfsk();
685
686 if (dataLen == 0){ //using DemodBuffer
687 if (clk == 0 || fcHigh == 0 || fcLow == 0){ //manual settings must set them all
688 uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0);
689 if (ans==0){
690 if (!fcHigh) fcHigh = 10;
691 if (!fcLow) fcLow = 8;
692 if (!clk) clk = 50;
693 }
694 }
695 } else {
696 setDemodBuf(data, dataLen, 0);
697 }
698
699 //default if not found
700 if (clk == 0) clk = 50;
701 if (fcHigh == 0) fcHigh = 10;
702 if (fcLow == 0) fcLow = 8;
703
704 uint16_t arg1, arg2;
705 arg1 = fcHigh << 8 | fcLow;
706 arg2 = invert << 8 | clk;
707 size_t size = DemodBufferLen;
708 if (size > USB_CMD_DATA_SIZE) {
709 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
710 size = USB_CMD_DATA_SIZE;
711 }
712 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
713
714 memcpy(c.d.asBytes, DemodBuffer, size);
715 clearCommandBuffer();
716 SendCommand(&c);
717 return 0;
718 }
719
720 // by marshmellow - sim ask data given clock, invert, manchester or raw, separator
721 // - allow pull data from DemodBuffer
722 int CmdLFaskSim(const char *Cmd)
723 {
724 // autodetect clock from Graphbuffer if using demod buffer
725 // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
726 uint8_t encoding = 1, separator = 0, clk = 0, invert = 0;
727 bool errors = FALSE;
728 char hexData[32] = {0x00};
729 uint8_t data[255]= {0x00}; // store entered hex data
730 int dataLen = 0;
731 uint8_t cmdp = 0;
732
733 while(param_getchar(Cmd, cmdp) != 0x00) {
734 switch(param_getchar(Cmd, cmdp)) {
735 case 'H':
736 case 'h': return usage_lf_simask();
737 case 'i':
738 invert = 1;
739 cmdp++;
740 break;
741 case 'c':
742 errors |= param_getdec(Cmd, cmdp+1, &clk);
743 cmdp += 2;
744 break;
745 case 'b':
746 encoding = 2; //biphase
747 cmdp++;
748 break;
749 case 'm':
750 encoding = 1; //manchester
751 cmdp++;
752 break;
753 case 'r':
754 encoding = 0; //raw
755 cmdp++;
756 break;
757 case 's':
758 separator = 1;
759 cmdp++;
760 break;
761 case 'd':
762 dataLen = param_getstr(Cmd, cmdp+1, hexData);
763 if (dataLen == 0)
764 errors = TRUE;
765 else
766 dataLen = hextobinarray((char *)data, hexData);
767
768 if (dataLen == 0) errors = TRUE;
769 if (errors) PrintAndLog ("Error getting hex data, datalen: %d", dataLen);
770 cmdp += 2;
771 break;
772 default:
773 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
774 errors = TRUE;
775 break;
776 }
777 if(errors) break;
778 }
779
780 // No args
781 if(cmdp == 0 && DemodBufferLen == 0)
782 errors = TRUE;
783
784 //Validations
785 if(errors) return usage_lf_simask();
786
787 if (dataLen == 0){ //using DemodBuffer
788 if (clk == 0)
789 clk = GetAskClock("0", false, false);
790 } else {
791 setDemodBuf(data, dataLen, 0);
792 }
793 if (clk == 0) clk = 64;
794 if (encoding == 0) clk >>= 2; //askraw needs to double the clock speed
795
796 size_t size = DemodBufferLen;
797
798 if (size > USB_CMD_DATA_SIZE) {
799 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
800 size = USB_CMD_DATA_SIZE;
801 }
802
803 PrintAndLog("preparing to sim ask data: %d bits", size);
804
805 uint16_t arg1, arg2;
806 arg1 = clk << 8 | encoding;
807 arg2 = invert << 8 | separator;
808
809 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
810 memcpy(c.d.asBytes, DemodBuffer, size);
811 clearCommandBuffer();
812 SendCommand(&c);
813 return 0;
814 }
815
816 // by marshmellow - sim psk data given carrier, clock, invert
817 // - allow pull data from DemodBuffer or parameters
818 int CmdLFpskSim(const char *Cmd) {
819 //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
820 //will need carrier, Clock, and bitstream
821 uint8_t carrier=0, clk=0;
822 uint8_t invert=0;
823 bool errors = FALSE;
824 char hexData[32] = {0x00}; // store entered hex data
825 uint8_t data[255] = {0x00};
826 int dataLen = 0;
827 uint8_t cmdp = 0;
828 uint8_t pskType = 1;
829
830 while(param_getchar(Cmd, cmdp) != 0x00) {
831 switch(param_getchar(Cmd, cmdp)) {
832 case 'h':
833 return usage_lf_simpsk();
834 case 'i':
835 invert = 1;
836 cmdp++;
837 break;
838 case 'c':
839 errors |= param_getdec(Cmd,cmdp+1,&clk);
840 cmdp +=2;
841 break;
842 case 'r':
843 errors |= param_getdec(Cmd,cmdp+1,&carrier);
844 cmdp += 2;
845 break;
846 case '1':
847 pskType = 1;
848 cmdp++;
849 break;
850 case '2':
851 pskType = 2;
852 cmdp++;
853 break;
854 case '3':
855 pskType = 3;
856 cmdp++;
857 break;
858 case 'd':
859 dataLen = param_getstr(Cmd, cmdp+1, hexData);
860 if (dataLen == 0)
861 errors = TRUE;
862 else
863 dataLen = hextobinarray((char *)data, hexData);
864
865 if (dataLen == 0) errors = TRUE;
866 if (errors) PrintAndLog ("Error getting hex data");
867 cmdp+=2;
868 break;
869 default:
870 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
871 errors = TRUE;
872 break;
873 }
874 if (errors) break;
875 }
876 // No args
877 if (cmdp == 0 && DemodBufferLen == 0)
878 errors = TRUE;
879
880 //Validations
881 if (errors) return usage_lf_simpsk();
882
883 if (dataLen == 0){ //using DemodBuffer
884 PrintAndLog("Getting Clocks");
885
886 if (clk==0) clk = GetPskClock("", FALSE, FALSE);
887 PrintAndLog("clk: %d",clk);
888
889 if (!carrier) carrier = GetPskCarrier("", FALSE, FALSE);
890 PrintAndLog("carrier: %d", carrier);
891
892 } else {
893 setDemodBuf(data, dataLen, 0);
894 }
895
896 if (clk <= 0) clk = 32;
897
898 if (carrier == 0) carrier = 2;
899
900 if (pskType != 1){
901 if (pskType == 2){
902 //need to convert psk2 to psk1 data before sim
903 psk2TOpsk1(DemodBuffer, DemodBufferLen);
904 } else {
905 PrintAndLog("Sorry, PSK3 not yet available");
906 }
907 }
908 uint16_t arg1, arg2;
909 arg1 = clk << 8 | carrier;
910 arg2 = invert;
911 size_t size = DemodBufferLen;
912 if (size > USB_CMD_DATA_SIZE) {
913 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
914 size = USB_CMD_DATA_SIZE;
915 }
916 UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
917 PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
918 memcpy(c.d.asBytes, DemodBuffer, size);
919 clearCommandBuffer();
920 SendCommand(&c);
921 return 0;
922 }
923
924 int CmdLFSimBidir(const char *Cmd) {
925 // Set ADC to twice the carrier for a slight supersampling
926 // HACK: not implemented in ARMSRC.
927 PrintAndLog("Not implemented yet.");
928 UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
929 SendCommand(&c);
930 return 0;
931 }
932
933 int CmdVchDemod(const char *Cmd) {
934 // Is this the entire sync pattern, or does this also include some
935 // data bits that happen to be the same everywhere? That would be
936 // lovely to know.
937 static const int SyncPattern[] = {
938 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
939 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
940 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
941 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
942 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
943 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
944 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
945 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
946 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
947 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
948 };
949
950 // So first, we correlate for the sync pattern, and mark that.
951 int bestCorrel = 0, bestPos = 0;
952 int i, j, sum = 0;
953
954 // It does us no good to find the sync pattern, with fewer than 2048 samples after it.
955
956 for (i = 0; i < (GraphTraceLen - 2048); i++) {
957 for (j = 0; j < ARRAYLEN(SyncPattern); j++) {
958 sum += GraphBuffer[i+j] * SyncPattern[j];
959 }
960 if (sum > bestCorrel) {
961 bestCorrel = sum;
962 bestPos = i;
963 }
964 }
965 PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
966
967 char bits[257];
968 bits[256] = '\0';
969
970 int worst = INT_MAX, worstPos = 0;
971
972 for (i = 0; i < 2048; i += 8) {
973 sum = 0;
974 for (j = 0; j < 8; j++)
975 sum += GraphBuffer[bestPos+i+j];
976
977 if (sum < 0)
978 bits[i/8] = '.';
979 else
980 bits[i/8] = '1';
981
982 if(abs(sum) < worst) {
983 worst = abs(sum);
984 worstPos = i;
985 }
986 }
987 PrintAndLog("bits:");
988 PrintAndLog("%s", bits);
989 PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
990
991 // clone
992 if (strcmp(Cmd, "clone")==0) {
993 GraphTraceLen = 0;
994 char *s;
995 for(s = bits; *s; s++) {
996 for(j = 0; j < 16; j++) {
997 GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
998 }
999 }
1000 RepaintGraphWindow();
1001 }
1002 return 0;
1003 }
1004
1005 //by marshmellow
1006 int CmdLFfind(const char *Cmd) {
1007 int ans = 0;
1008 char cmdp = param_getchar(Cmd, 0);
1009 char testRaw = param_getchar(Cmd, 1);
1010 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') return usage_lf_find();
1011
1012 if (!offline && (cmdp != '1')){
1013 CmdLFRead("s");
1014 getSamples("30000", TRUE);
1015 } else if (GraphTraceLen < 1000) {
1016 PrintAndLog("Data in Graphbuffer was too small.");
1017 return 0;
1018 }
1019 if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
1020
1021 // if ( justNoise(GraphBuffer, GraphTraceLen) ) {
1022 // PrintAndLog("Signal looks just like noise. Quitting.");
1023 // return 0;
1024 // }
1025
1026 PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
1027 PrintAndLog("False Positives ARE possible\n");
1028 PrintAndLog("\nChecking for known tags:\n");
1029
1030 ans=CmdFSKdemodIO("");
1031 if (ans>0) {
1032 PrintAndLog("\nValid IO Prox ID Found!");
1033 return 1;
1034 }
1035 ans=CmdFSKdemodPyramid("");
1036 if (ans>0) {
1037 PrintAndLog("\nValid Pyramid ID Found!");
1038 return 1;
1039 }
1040 ans=CmdFSKdemodParadox("");
1041 if (ans>0) {
1042 PrintAndLog("\nValid Paradox ID Found!");
1043 return 1;
1044 }
1045 ans=CmdFSKdemodAWID("");
1046 if (ans>0) {
1047 PrintAndLog("\nValid AWID ID Found!");
1048 return 1;
1049 }
1050 ans=CmdFSKdemodHID("");
1051 if (ans>0) {
1052 PrintAndLog("\nValid HID Prox ID Found!");
1053 return 1;
1054 }
1055 ans=CmdAskEM410xDemod("");
1056 if (ans>0) {
1057 PrintAndLog("\nValid EM410x ID Found!");
1058 return 1;
1059 }
1060 ans=CmdG_Prox_II_Demod("");
1061 if (ans>0) {
1062 PrintAndLog("\nValid Guardall G-Prox II ID Found!");
1063 return 1;
1064 }
1065 ans=CmdFDXBdemodBI("");
1066 if (ans>0) {
1067 PrintAndLog("\nValid FDX-B ID Found!");
1068 return 1;
1069 }
1070 ans=EM4x50Read("", false);
1071 if (ans>0) {
1072 PrintAndLog("\nValid EM4x50 ID Found!");
1073 return 1;
1074 }
1075 ans=CmdVikingDemod("");
1076 if (ans>0) {
1077 PrintAndLog("\nValid Viking ID Found!");
1078 return 1;
1079 }
1080 ans=CmdIndalaDecode("");
1081 if (ans>0) {
1082 PrintAndLog("\nValid Indala ID Found!");
1083 return 1;
1084 }
1085 ans=CmdPSKNexWatch("");
1086 if (ans>0) {
1087 PrintAndLog("\nValid NexWatch ID Found!");
1088 return 1;
1089 }
1090 ans=CmdJablotronDemod("");
1091 if (ans>0) {
1092 PrintAndLog("\nValid Jablotron ID Found!");
1093 return 1;
1094 }
1095 ans=CmdLFNedapDemod("");
1096 if (ans>0) {
1097 PrintAndLog("\nValid NEDAP ID Found!");
1098 return 1;
1099 }
1100 ans=CmdVisa2kDemod("");
1101 if (ans>0) {
1102 PrintAndLog("\nValid Visa2000 ID Found!");
1103 return 1;
1104 }
1105 ans=CmdNoralsyDemod("");
1106 if (ans>0) {
1107 PrintAndLog("\nValid Noralsy ID Found!");
1108 return 1;
1109 }
1110 ans=CmdPrescoDemod("");
1111 if (ans>0) {
1112 PrintAndLog("\nValid Presco ID Found!");
1113 return 1;
1114 }
1115 // TIdemod?
1116
1117
1118 PrintAndLog("\nNo Known Tags Found!\n");
1119 if (testRaw=='u' || testRaw=='U'){
1120 //test unknown tag formats (raw mode)
1121 PrintAndLog("\nChecking for Unknown tags:\n");
1122 ans=AutoCorrelate(4000, FALSE, FALSE);
1123
1124 if (ans > 0) {
1125
1126 PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
1127
1128 if ( ans % 8 == 0) {
1129 int bytes = (ans / 8);
1130 PrintAndLog("Possible %d bytes", bytes);
1131 int blocks = 0;
1132 if ( bytes % 2 == 0) {
1133 blocks = (bytes / 2);
1134 PrintAndLog("Possible 2 blocks, width %d", blocks);
1135 }
1136 if ( bytes % 4 == 0) {
1137 blocks = (bytes / 4);
1138 PrintAndLog("Possible 4 blocks, width %d", blocks);
1139 }
1140 if ( bytes % 8 == 0) {
1141 blocks = (bytes / 8);
1142 PrintAndLog("Possible 8 blocks, width %d", blocks);
1143 }
1144 if ( bytes % 16 == 0) {
1145 blocks = (bytes / 16);
1146 PrintAndLog("Possible 16 blocks, width %d", blocks);
1147 }
1148 }
1149 }
1150
1151 ans=GetFskClock("",FALSE,FALSE);
1152 if (ans != 0){ //fsk
1153 ans=FSKrawDemod("",TRUE);
1154 if (ans>0) {
1155 PrintAndLog("\nUnknown FSK Modulated Tag Found!");
1156 return 1;
1157 }
1158 }
1159 bool st = TRUE;
1160 ans=ASKDemod_ext("0 0 0",TRUE,FALSE,1,&st);
1161 if (ans>0) {
1162 PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
1163 PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
1164 return 1;
1165 }
1166
1167 ans=CmdPSK1rawDemod("");
1168 if (ans>0) {
1169 PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
1170 PrintAndLog("\nCould also be PSK3 - [currently not supported]");
1171 PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
1172 return 1;
1173 }
1174 PrintAndLog("\nNo Data Found!\n");
1175 }
1176 return 0;
1177 }
1178
1179 static command_t CommandTable[] =
1180 {
1181 {"help", CmdHelp, 1, "This help"},
1182 {"animal", CmdLFFdx, 1, "{ Animal RFIDs... }"},
1183 {"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"},
1184 {"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"},
1185 {"guard", CmdLFGuard, 1, "{ Guardall RFIDs... }"},
1186 {"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
1187 {"hitag", CmdLFHitag, 1, "{ HITAG RFIDs... }"},
1188 // {"indala", CmdLFIndala, 1, "{ Indala RFIDs... }"},
1189 {"io", CmdLFIO, 1, "{ IOPROX RFIDs... }"},
1190 {"jablotron", CmdLFJablotron, 1, "{ Jablotron RFIDs... }"},
1191 {"nedap", CmdLFNedap, 1, "{ Nedap RFIDs... }"},
1192 {"noralsy", CmdLFNoralsy, 1, "{ Noralsy RFIDs... }"},
1193 {"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 RFIDs... }"},
1194 {"presco", CmdLFPresco, 1, "{ Presco RFIDs... }"},
1195 {"pyramid", CmdLFPyramid, 1, "{ Farpointe/Pyramid RFIDs... }"},
1196 {"ti", CmdLFTI, 1, "{ TI RFIDs... }"},
1197 {"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"},
1198 {"viking", CmdLFViking, 1, "{ Viking RFIDs... }"},
1199 {"visa2000", CmdLFVisa2k, 1, "{ Visa2000 RFIDs... }"},
1200 {"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
1201 {"cmdread", CmdLFCommandRead, 0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
1202 {"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"},
1203 {"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
1204 {"indalaclone", CmdIndalaClone, 0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
1205 {"read", CmdLFRead, 0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
1206 {"search", CmdLFfind, 1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) \n\t\t-- 'u' to search for unknown tags"},
1207 {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
1208 {"simask", CmdLFaskSim, 0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
1209 {"simfsk", CmdLFfskSim, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
1210 {"simpsk", CmdLFpskSim, 0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] \n\t\t-- Simulate LF PSK tag from demodbuffer or input"},
1211 {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
1212 {"snoop", CmdLFSnoop, 0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
1213 {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"},
1214 {NULL, NULL, 0, NULL}
1215 };
1216
1217 int CmdLF(const char *Cmd) {
1218 clearCommandBuffer();
1219 CmdsParse(CommandTable, Cmd);
1220 return 0;
1221 }
1222
1223 int CmdHelp(const char *Cmd) {
1224 CmdsHelp(CommandTable);
1225 return 0;
1226 }
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