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begin update lf commands with help text and
[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
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <limits.h>
15 #include "proxmark3.h"
16 #include "data.h"
17 #include "graph.h"
18 #include "ui.h"
19 #include "cmdparser.h"
20 #include "cmdmain.h"
21 #include "cmddata.h"
22 #include "util.h"
23 #include "cmdlf.h"
24 #include "cmdlfhid.h"
25 #include "cmdlfawid.h"
26 #include "cmdlfti.h"
27 #include "cmdlfem4x.h"
28 #include "cmdlfhitag.h"
29 #include "cmdlft55xx.h"
30 #include "cmdlfpcf7931.h"
31 #include "cmdlfio.h"
32 #include "lfdemod.h"
33
34 static int CmdHelp(const char *Cmd);
35
36
37
38 int usage_lf_cmdread()
39 {
40 PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H] ");
41 PrintAndLog("Options: ");
42 PrintAndLog(" h This help");
43 PrintAndLog(" L Low frequency (125 KHz)");
44 PrintAndLog(" H High frequency (134 KHz)");
45 PrintAndLog(" d <delay> delay OFF period");
46 PrintAndLog(" z <zero> time period ZERO");
47 PrintAndLog(" o <one> time period ONE");
48 PrintAndLog(" c <cmd> Command bytes");
49 PrintAndLog(" ************* All periods in microseconds");
50 PrintAndLog("Examples:");
51 PrintAndLog(" lf cmdread d 80 z 100 o 200 c 11000");
52 PrintAndLog(" lf cmdread d 80 z 100 o 100 c 11000 H");
53 return 0;
54 }
55
56 /* send a command before reading */
57 int CmdLFCommandRead(const char *Cmd)
58 {
59 static char dummy[3] = {0x20,0x00,0x00};
60 UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
61 bool errors = FALSE;
62 //uint8_t divisor = 95; //125khz
63 uint8_t cmdp = 0;
64 int strLength = 0;
65 while(param_getchar(Cmd, cmdp) != 0x00)
66 {
67 switch(param_getchar(Cmd, cmdp))
68 {
69 case 'h':
70 return usage_lf_cmdread();
71 case 'H':
72 //divisor = 88;
73 dummy[1]='h';
74 cmdp++;
75 break;
76 case 'L':
77 cmdp++;
78 break;
79 case 'c':
80 strLength = param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes);
81 cmdp+=2;
82 break;
83 case 'd':
84 c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
85 cmdp+=2;
86 break;
87 case 'z':
88 c.arg[1] = param_get32ex(Cmd, cmdp+1, 0, 10);
89 cmdp+=2;
90 break;
91 case 'o':
92 c.arg[2] = param_get32ex(Cmd, cmdp+1, 0, 10);
93 cmdp+=2;
94 break;
95 default:
96 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
97 errors = 1;
98 break;
99 }
100 if(errors) break;
101 }
102 // No args
103 if(cmdp == 0) errors = 1;
104
105 //Validations
106 if(errors) return usage_lf_cmdread();
107
108 // in case they specified 'H'
109 strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy);
110
111 clearCommandBuffer();
112 SendCommand(&c);
113 return 0;
114 }
115
116 int CmdFlexdemod(const char *Cmd)
117 {
118 int i;
119 for (i = 0; i < GraphTraceLen; ++i) {
120 if (GraphBuffer[i] < 0) {
121 GraphBuffer[i] = -1;
122 } else {
123 GraphBuffer[i] = 1;
124 }
125 }
126
127 #define LONG_WAIT 100
128 int start;
129 for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
130 int first = GraphBuffer[start];
131 for (i = start; i < start + LONG_WAIT; i++) {
132 if (GraphBuffer[i] != first) {
133 break;
134 }
135 }
136 if (i == (start + LONG_WAIT)) {
137 break;
138 }
139 }
140 if (start == GraphTraceLen - LONG_WAIT) {
141 PrintAndLog("nothing to wait for");
142 return 0;
143 }
144
145 GraphBuffer[start] = 2;
146 GraphBuffer[start+1] = -2;
147 uint8_t bits[64] = {0x00};
148
149 int bit, sum;
150 i = start;
151 for (bit = 0; bit < 64; bit++) {
152 sum = 0;
153 for (int j = 0; j < 16; j++) {
154 sum += GraphBuffer[i++];
155 }
156
157 bits[bit] = (sum > 0) ? 1 : 0;
158
159 PrintAndLog("bit %d sum %d", bit, sum);
160 }
161
162 for (bit = 0; bit < 64; bit++) {
163 int j;
164 int sum = 0;
165 for (j = 0; j < 16; j++) {
166 sum += GraphBuffer[i++];
167 }
168 if (sum > 0 && bits[bit] != 1) {
169 PrintAndLog("oops1 at %d", bit);
170 }
171 if (sum < 0 && bits[bit] != 0) {
172 PrintAndLog("oops2 at %d", bit);
173 }
174 }
175
176 // HACK writing back to graphbuffer.
177 GraphTraceLen = 32*64;
178 i = 0;
179 int phase = 0;
180 for (bit = 0; bit < 64; bit++) {
181
182 phase = (bits[bit] == 0) ? 0 : 1;
183
184 int j;
185 for (j = 0; j < 32; j++) {
186 GraphBuffer[i++] = phase;
187 phase = !phase;
188 }
189 }
190
191 RepaintGraphWindow();
192 return 0;
193 }
194
195 int CmdIndalaDemod(const char *Cmd)
196 {
197 // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
198
199 int state = -1;
200 int count = 0;
201 int i, j;
202
203 // worst case with GraphTraceLen=64000 is < 4096
204 // under normal conditions it's < 2048
205
206 uint8_t rawbits[4096];
207 int rawbit = 0;
208 int worst = 0, worstPos = 0;
209 // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
210 for (i = 0; i < GraphTraceLen-1; i += 2) {
211 count += 1;
212 if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
213 if (state == 0) {
214 for (j = 0; j < count - 8; j += 16) {
215 rawbits[rawbit++] = 0;
216 }
217 if ((abs(count - j)) > worst) {
218 worst = abs(count - j);
219 worstPos = i;
220 }
221 }
222 state = 1;
223 count = 0;
224 } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
225 if (state == 1) {
226 for (j = 0; j < count - 8; j += 16) {
227 rawbits[rawbit++] = 1;
228 }
229 if ((abs(count - j)) > worst) {
230 worst = abs(count - j);
231 worstPos = i;
232 }
233 }
234 state = 0;
235 count = 0;
236 }
237 }
238
239 if (rawbit>0){
240 PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
241 PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
242 } else {
243 return 0;
244 }
245
246 // Finding the start of a UID
247 int uidlen, long_wait;
248 if (strcmp(Cmd, "224") == 0) {
249 uidlen = 224;
250 long_wait = 30;
251 } else {
252 uidlen = 64;
253 long_wait = 29;
254 }
255
256 int start;
257 int first = 0;
258 for (start = 0; start <= rawbit - uidlen; start++) {
259 first = rawbits[start];
260 for (i = start; i < start + long_wait; i++) {
261 if (rawbits[i] != first) {
262 break;
263 }
264 }
265 if (i == (start + long_wait)) {
266 break;
267 }
268 }
269
270 if (start == rawbit - uidlen + 1) {
271 PrintAndLog("nothing to wait for");
272 return 0;
273 }
274
275 // Inverting signal if needed
276 if (first == 1) {
277 for (i = start; i < rawbit; i++) {
278 rawbits[i] = !rawbits[i];
279 }
280 }
281
282 // Dumping UID
283 uint8_t bits[224] = {0x00};
284 char showbits[225] = {0x00};
285 int bit;
286 i = start;
287 int times = 0;
288
289 if (uidlen > rawbit) {
290 PrintAndLog("Warning: not enough raw bits to get a full UID");
291 for (bit = 0; bit < rawbit; bit++) {
292 bits[bit] = rawbits[i++];
293 // As we cannot know the parity, let's use "." and "/"
294 showbits[bit] = '.' + bits[bit];
295 }
296 showbits[bit+1]='\0';
297 PrintAndLog("Partial UID=%s", showbits);
298 return 0;
299 } else {
300 for (bit = 0; bit < uidlen; bit++) {
301 bits[bit] = rawbits[i++];
302 showbits[bit] = '0' + bits[bit];
303 }
304 times = 1;
305 }
306
307 //convert UID to HEX
308 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
309 int idx;
310 uid1 = uid2 = 0;
311
312 if (uidlen==64){
313 for( idx=0; idx<64; idx++) {
314 if (showbits[idx] == '0') {
315 uid1=(uid1<<1)|(uid2>>31);
316 uid2=(uid2<<1)|0;
317 } else {
318 uid1=(uid1<<1)|(uid2>>31);
319 uid2=(uid2<<1)|1;
320 }
321 }
322 PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
323 }
324 else {
325 uid3 = uid4 = uid5 = uid6 = uid7 = 0;
326
327 for( idx=0; idx<224; idx++) {
328 uid1=(uid1<<1)|(uid2>>31);
329 uid2=(uid2<<1)|(uid3>>31);
330 uid3=(uid3<<1)|(uid4>>31);
331 uid4=(uid4<<1)|(uid5>>31);
332 uid5=(uid5<<1)|(uid6>>31);
333 uid6=(uid6<<1)|(uid7>>31);
334
335 if (showbits[idx] == '0')
336 uid7 = (uid7<<1) | 0;
337 else
338 uid7 = (uid7<<1) | 1;
339 }
340 PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
341 }
342
343 // Checking UID against next occurrences
344 int failed = 0;
345 for (; i + uidlen <= rawbit;) {
346 failed = 0;
347 for (bit = 0; bit < uidlen; bit++) {
348 if (bits[bit] != rawbits[i++]) {
349 failed = 1;
350 break;
351 }
352 }
353 if (failed == 1) {
354 break;
355 }
356 times += 1;
357 }
358
359 PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
360
361 // Remodulating for tag cloning
362 // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
363 // since this changes graphbuffer data.
364 GraphTraceLen = 32*uidlen;
365 i = 0;
366 int phase = 0;
367 for (bit = 0; bit < uidlen; bit++) {
368 if (bits[bit] == 0) {
369 phase = 0;
370 } else {
371 phase = 1;
372 }
373 int j;
374 for (j = 0; j < 32; j++) {
375 GraphBuffer[i++] = phase;
376 phase = !phase;
377 }
378 }
379
380 RepaintGraphWindow();
381 return 1;
382 }
383
384 int CmdIndalaClone(const char *Cmd)
385 {
386 UsbCommand c;
387 unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
388
389 uid1 = uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
390 int n = 0, i = 0;
391
392 if (strchr(Cmd,'l') != 0) {
393 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
394 uid1 = (uid1 << 4) | (uid2 >> 28);
395 uid2 = (uid2 << 4) | (uid3 >> 28);
396 uid3 = (uid3 << 4) | (uid4 >> 28);
397 uid4 = (uid4 << 4) | (uid5 >> 28);
398 uid5 = (uid5 << 4) | (uid6 >> 28);
399 uid6 = (uid6 << 4) | (uid7 >> 28);
400 uid7 = (uid7 << 4) | (n & 0xf);
401 }
402 PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
403 c.cmd = CMD_INDALA_CLONE_TAG_L;
404 c.d.asDwords[0] = uid1;
405 c.d.asDwords[1] = uid2;
406 c.d.asDwords[2] = uid3;
407 c.d.asDwords[3] = uid4;
408 c.d.asDwords[4] = uid5;
409 c.d.asDwords[5] = uid6;
410 c.d.asDwords[6] = uid7;
411 } else {
412 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
413 uid1 = (uid1 << 4) | (uid2 >> 28);
414 uid2 = (uid2 << 4) | (n & 0xf);
415 }
416 PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
417 c.cmd = CMD_INDALA_CLONE_TAG;
418 c.arg[0] = uid1;
419 c.arg[1] = uid2;
420 }
421
422 SendCommand(&c);
423 return 0;
424 }
425
426 int usage_lf_read()
427 {
428 PrintAndLog("Usage: lf read");
429 PrintAndLog("Options: ");
430 PrintAndLog(" h This help");
431 PrintAndLog(" s silent run no printout");
432 PrintAndLog("This function takes no arguments. ");
433 PrintAndLog("Use 'lf config' to set parameters.");
434 return 0;
435 }
436 int usage_lf_snoop()
437 {
438 PrintAndLog("Usage: lf snoop");
439 PrintAndLog("Options: ");
440 PrintAndLog(" h This help");
441 PrintAndLog("This function takes no arguments. ");
442 PrintAndLog("Use 'lf config' to set parameters.");
443 return 0;
444 }
445
446 int usage_lf_config()
447 {
448 PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
449 PrintAndLog("Options: ");
450 PrintAndLog(" h This help");
451 PrintAndLog(" L Low frequency (125 KHz)");
452 PrintAndLog(" H High frequency (134 KHz)");
453 PrintAndLog(" q <divisor> Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
454 PrintAndLog(" b <bps> Sets resolution of bits per sample. Default (max): 8");
455 PrintAndLog(" d <decim> Sets decimation. A value of N saves only 1 in N samples. Default: 1");
456 PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1");
457 PrintAndLog(" t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
458 PrintAndLog("Examples:");
459 PrintAndLog(" lf config b 8 L");
460 PrintAndLog(" Samples at 125KHz, 8bps.");
461 PrintAndLog(" lf config H b 4 d 3");
462 PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with ");
463 PrintAndLog(" a resolution of 4 bits per sample.");
464 PrintAndLog(" lf read");
465 PrintAndLog(" Performs a read (active field)");
466 PrintAndLog(" lf snoop");
467 PrintAndLog(" Performs a snoop (no active field)");
468 return 0;
469 }
470
471 int CmdLFSetConfig(const char *Cmd)
472 {
473
474 uint8_t divisor = 0;//Frequency divisor
475 uint8_t bps = 0; // Bits per sample
476 uint8_t decimation = 0; //How many to keep
477 bool averaging = 1; // Defaults to true
478 bool errors = FALSE;
479 int trigger_threshold =-1;//Means no change
480 uint8_t unsigned_trigg = 0;
481
482 uint8_t cmdp =0;
483 while(param_getchar(Cmd, cmdp) != 0x00)
484 {
485 switch(param_getchar(Cmd, cmdp))
486 {
487 case 'h':
488 return usage_lf_config();
489 case 'H':
490 divisor = 88;
491 cmdp++;
492 break;
493 case 'L':
494 divisor = 95;
495 cmdp++;
496 break;
497 case 'q':
498 errors |= param_getdec(Cmd,cmdp+1,&divisor);
499 cmdp+=2;
500 break;
501 case 't':
502 errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg);
503 cmdp+=2;
504 if(!errors) trigger_threshold = unsigned_trigg;
505 break;
506 case 'b':
507 errors |= param_getdec(Cmd,cmdp+1,&bps);
508 cmdp+=2;
509 break;
510 case 'd':
511 errors |= param_getdec(Cmd,cmdp+1,&decimation);
512 cmdp+=2;
513 break;
514 case 'a':
515 averaging = param_getchar(Cmd,cmdp+1) == '1';
516 cmdp+=2;
517 break;
518 default:
519 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
520 errors = 1;
521 break;
522 }
523 if(errors) break;
524 }
525 if(cmdp == 0)
526 {
527 errors = 1;// No args
528 }
529
530 //Validations
531 if(errors)
532 {
533 return usage_lf_config();
534 }
535 //Bps is limited to 8, so fits in lower half of arg1
536 if(bps >> 8) bps = 8;
537
538 sample_config config = {
539 decimation,bps,averaging,divisor,trigger_threshold
540 };
541 //Averaging is a flag on high-bit of arg[1]
542 UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
543 memcpy(c.d.asBytes,&config,sizeof(sample_config));
544 SendCommand(&c);
545 return 0;
546 }
547
548 int CmdLFRead(const char *Cmd)
549 {
550
551 uint8_t cmdp = 0;
552 bool arg1 = false;
553 if (param_getchar(Cmd, cmdp) == 'h')
554 {
555 return usage_lf_read();
556 }
557 if (param_getchar(Cmd, cmdp) == 's') arg1 = true; //suppress print
558 //And ship it to device
559 UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
560 SendCommand(&c);
561 //WaitForResponse(CMD_ACK,NULL);
562 if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
563 PrintAndLog("command execution time out");
564 return 1;
565 }
566
567 return 0;
568 }
569
570 int CmdLFSnoop(const char *Cmd)
571 {
572 uint8_t cmdp =0;
573 if(param_getchar(Cmd, cmdp) == 'h')
574 {
575 return usage_lf_snoop();
576 }
577
578 UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
579 SendCommand(&c);
580 WaitForResponse(CMD_ACK,NULL);
581 return 0;
582 }
583
584 static void ChkBitstream(const char *str)
585 {
586 int i;
587
588 /* convert to bitstream if necessary */
589 for (i = 0; i < (int)(GraphTraceLen / 2); i++){
590 if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
591 CmdGetBitStream("");
592 break;
593 }
594 }
595 }
596 //Attempt to simulate any wave in buffer (one bit per output sample)
597 // converts GraphBuffer to bitstream (based on zero crossings) if needed.
598 int CmdLFSim(const char *Cmd)
599 {
600 int i,j;
601 static int gap;
602
603 sscanf(Cmd, "%i", &gap);
604
605 // convert to bitstream if necessary
606
607 ChkBitstream(Cmd);
608
609 //can send only 512 bits at a time (1 byte sent per bit...)
610 printf("Sending [%d bytes]", GraphTraceLen);
611 for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
612 UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
613
614 for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
615 c.d.asBytes[j] = GraphBuffer[i+j];
616 }
617 SendCommand(&c);
618 WaitForResponse(CMD_ACK,NULL);
619 printf(".");
620 }
621
622 printf("\n");
623 PrintAndLog("Starting to simulate");
624 UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
625 SendCommand(&c);
626 return 0;
627 }
628
629 int usage_lf_simfsk(void)
630 {
631 //print help
632 PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
633 PrintAndLog("Options: ");
634 PrintAndLog(" h This help");
635 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
636 PrintAndLog(" i invert data");
637 PrintAndLog(" H <fcHigh> Manually set the larger Field Clock");
638 PrintAndLog(" L <fcLow> Manually set the smaller Field Clock");
639 //PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
640 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
641 PrintAndLog("\n NOTE: if you set one clock manually set them all manually");
642 return 0;
643 }
644
645 int usage_lf_simask(void)
646 {
647 //print help
648 PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
649 PrintAndLog("Options: ");
650 PrintAndLog(" h This help");
651 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
652 PrintAndLog(" i invert data");
653 PrintAndLog(" b sim ask/biphase");
654 PrintAndLog(" m sim ask/manchester - Default");
655 PrintAndLog(" r sim ask/raw");
656 PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
657 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
658 return 0;
659 }
660
661 int usage_lf_simpsk(void)
662 {
663 //print help
664 PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
665 PrintAndLog("Options: ");
666 PrintAndLog(" h This help");
667 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
668 PrintAndLog(" i invert data");
669 PrintAndLog(" 1 set PSK1 (default)");
670 PrintAndLog(" 2 set PSK2");
671 PrintAndLog(" 3 set PSK3");
672 PrintAndLog(" r <carrier> 2|4|8 are valid carriers: default = 2");
673 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
674 return 0;
675 }
676
677 // by marshmellow - sim ask data given clock, fcHigh, fcLow, invert
678 // - allow pull data from DemodBuffer
679 int CmdLFfskSim(const char *Cmd)
680 {
681 //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
682 // otherwise will need FChigh, FClow, Clock, and bitstream
683 uint8_t fcHigh=0, fcLow=0, clk=0;
684 uint8_t invert=0;
685 bool errors = FALSE;
686 char hexData[32] = {0x00}; // store entered hex data
687 uint8_t data[255] = {0x00};
688 int dataLen = 0;
689 uint8_t cmdp = 0;
690 while(param_getchar(Cmd, cmdp) != 0x00)
691 {
692 switch(param_getchar(Cmd, cmdp))
693 {
694 case 'h':
695 return usage_lf_simfsk();
696 case 'i':
697 invert = 1;
698 cmdp++;
699 break;
700 case 'c':
701 errors |= param_getdec(Cmd,cmdp+1,&clk);
702 cmdp+=2;
703 break;
704 case 'H':
705 errors |= param_getdec(Cmd,cmdp+1,&fcHigh);
706 cmdp+=2;
707 break;
708 case 'L':
709 errors |= param_getdec(Cmd,cmdp+1,&fcLow);
710 cmdp+=2;
711 break;
712 //case 's':
713 // separator=1;
714 // cmdp++;
715 // break;
716 case 'd':
717 dataLen = param_getstr(Cmd, cmdp+1, hexData);
718 if (dataLen==0) {
719 errors=TRUE;
720 } else {
721 dataLen = hextobinarray((char *)data, hexData);
722 }
723 if (dataLen==0) errors=TRUE;
724 if (errors) PrintAndLog ("Error getting hex data");
725 cmdp+=2;
726 break;
727 default:
728 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
729 errors = TRUE;
730 break;
731 }
732 if(errors) break;
733 }
734 if(cmdp == 0 && DemodBufferLen == 0)
735 {
736 errors = TRUE;// No args
737 }
738
739 //Validations
740 if(errors)
741 {
742 return usage_lf_simfsk();
743 }
744
745 if (dataLen == 0){ //using DemodBuffer
746 if (clk==0 || fcHigh==0 || fcLow==0){ //manual settings must set them all
747 uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0);
748 if (ans==0){
749 if (!fcHigh) fcHigh=10;
750 if (!fcLow) fcLow=8;
751 if (!clk) clk=50;
752 }
753 }
754 } else {
755 setDemodBuf(data, dataLen, 0);
756 }
757
758 //default if not found
759 if (clk == 0) clk = 50;
760 if (fcHigh == 0) fcHigh = 10;
761 if (fcLow == 0) fcLow = 8;
762
763 uint16_t arg1, arg2;
764 arg1 = fcHigh << 8 | fcLow;
765 arg2 = invert << 8 | clk;
766 size_t size = DemodBufferLen;
767 if (size > USB_CMD_DATA_SIZE) {
768 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
769 size = USB_CMD_DATA_SIZE;
770 }
771 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
772
773 memcpy(c.d.asBytes, DemodBuffer, size);
774 SendCommand(&c);
775 return 0;
776 }
777
778 // by marshmellow - sim ask data given clock, invert, manchester or raw, separator
779 // - allow pull data from DemodBuffer
780 int CmdLFaskSim(const char *Cmd)
781 {
782 //autodetect clock from Graphbuffer if using demod buffer
783 // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
784 uint8_t encoding = 1, separator = 0;
785 uint8_t clk=0, invert=0;
786 bool errors = FALSE;
787 char hexData[32] = {0x00};
788 uint8_t data[255]= {0x00}; // store entered hex data
789 int dataLen = 0;
790 uint8_t cmdp = 0;
791 while(param_getchar(Cmd, cmdp) != 0x00)
792 {
793 switch(param_getchar(Cmd, cmdp))
794 {
795 case 'h':
796 return usage_lf_simask();
797 case 'i':
798 invert = 1;
799 cmdp++;
800 break;
801 case 'c':
802 errors |= param_getdec(Cmd,cmdp+1,&clk);
803 cmdp+=2;
804 break;
805 case 'b':
806 encoding=2; //biphase
807 cmdp++;
808 break;
809 case 'm':
810 encoding=1;
811 cmdp++;
812 break;
813 case 'r':
814 encoding=0;
815 cmdp++;
816 break;
817 case 's':
818 separator=1;
819 cmdp++;
820 break;
821 case 'd':
822 dataLen = param_getstr(Cmd, cmdp+1, hexData);
823 if (dataLen==0) {
824 errors=TRUE;
825 } else {
826 dataLen = hextobinarray((char *)data, hexData);
827 }
828 if (dataLen==0) errors=TRUE;
829 if (errors) PrintAndLog ("Error getting hex data, datalen: %d",dataLen);
830 cmdp+=2;
831 break;
832 default:
833 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
834 errors = TRUE;
835 break;
836 }
837 if(errors) break;
838 }
839 if(cmdp == 0 && DemodBufferLen == 0)
840 {
841 errors = TRUE;// No args
842 }
843
844 //Validations
845 if(errors)
846 {
847 return usage_lf_simask();
848 }
849 if (dataLen == 0){ //using DemodBuffer
850 if (clk == 0) clk = GetAskClock("0", false, false);
851 } else {
852 setDemodBuf(data, dataLen, 0);
853 }
854 if (clk == 0) clk = 64;
855 if (encoding == 0) clk = clk/2; //askraw needs to double the clock speed
856 uint16_t arg1, arg2;
857 size_t size=DemodBufferLen;
858 arg1 = clk << 8 | encoding;
859 arg2 = invert << 8 | separator;
860 if (size > USB_CMD_DATA_SIZE) {
861 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
862 size = USB_CMD_DATA_SIZE;
863 }
864 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
865 PrintAndLog("preparing to sim ask data: %d bits", size);
866 memcpy(c.d.asBytes, DemodBuffer, size);
867 SendCommand(&c);
868 return 0;
869 }
870
871 // by marshmellow - sim psk data given carrier, clock, invert
872 // - allow pull data from DemodBuffer or parameters
873 int CmdLFpskSim(const char *Cmd)
874 {
875 //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
876 //will need carrier, Clock, and bitstream
877 uint8_t carrier=0, clk=0;
878 uint8_t invert=0;
879 bool errors = FALSE;
880 char hexData[32] = {0x00}; // store entered hex data
881 uint8_t data[255] = {0x00};
882 int dataLen = 0;
883 uint8_t cmdp = 0;
884 uint8_t pskType = 1;
885 while(param_getchar(Cmd, cmdp) != 0x00)
886 {
887 switch(param_getchar(Cmd, cmdp))
888 {
889 case 'h':
890 return usage_lf_simpsk();
891 case 'i':
892 invert = 1;
893 cmdp++;
894 break;
895 case 'c':
896 errors |= param_getdec(Cmd,cmdp+1,&clk);
897 cmdp+=2;
898 break;
899 case 'r':
900 errors |= param_getdec(Cmd,cmdp+1,&carrier);
901 cmdp+=2;
902 break;
903 case '1':
904 pskType=1;
905 cmdp++;
906 break;
907 case '2':
908 pskType=2;
909 cmdp++;
910 break;
911 case '3':
912 pskType=3;
913 cmdp++;
914 break;
915 case 'd':
916 dataLen = param_getstr(Cmd, cmdp+1, hexData);
917 if (dataLen==0) {
918 errors=TRUE;
919 } else {
920 dataLen = hextobinarray((char *)data, hexData);
921 }
922 if (dataLen==0) errors=TRUE;
923 if (errors) PrintAndLog ("Error getting hex data");
924 cmdp+=2;
925 break;
926 default:
927 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
928 errors = TRUE;
929 break;
930 }
931 if (errors) break;
932 }
933 if (cmdp == 0 && DemodBufferLen == 0)
934 {
935 errors = TRUE;// No args
936 }
937
938 //Validations
939 if (errors)
940 {
941 return usage_lf_simpsk();
942 }
943 if (dataLen == 0){ //using DemodBuffer
944 PrintAndLog("Getting Clocks");
945 if (clk==0) clk = GetPskClock("", FALSE, FALSE);
946 PrintAndLog("clk: %d",clk);
947 if (!carrier) carrier = GetPskCarrier("", FALSE, FALSE);
948 PrintAndLog("carrier: %d", carrier);
949 } else {
950 setDemodBuf(data, dataLen, 0);
951 }
952
953 if (clk <= 0) clk = 32;
954 if (carrier == 0) carrier = 2;
955 if (pskType != 1){
956 if (pskType == 2){
957 //need to convert psk2 to psk1 data before sim
958 psk2TOpsk1(DemodBuffer, DemodBufferLen);
959 } else {
960 PrintAndLog("Sorry, PSK3 not yet available");
961 }
962 }
963 uint16_t arg1, arg2;
964 arg1 = clk << 8 | carrier;
965 arg2 = invert;
966 size_t size=DemodBufferLen;
967 if (size > USB_CMD_DATA_SIZE) {
968 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
969 size=USB_CMD_DATA_SIZE;
970 }
971 UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
972 PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
973 memcpy(c.d.asBytes, DemodBuffer, size);
974 SendCommand(&c);
975
976 return 0;
977 }
978
979 int CmdLFSimBidir(const char *Cmd)
980 {
981 // Set ADC to twice the carrier for a slight supersampling
982 // HACK: not implemented in ARMSRC.
983 PrintAndLog("Not implemented yet.");
984 UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
985 SendCommand(&c);
986 return 0;
987 }
988
989 int CmdVchDemod(const char *Cmd)
990 {
991 // Is this the entire sync pattern, or does this also include some
992 // data bits that happen to be the same everywhere? That would be
993 // lovely to know.
994 static const int SyncPattern[] = {
995 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
996 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
997 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
998 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
999 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1000 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
1001 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1002 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
1003 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1004 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
1005 };
1006
1007 // So first, we correlate for the sync pattern, and mark that.
1008 int bestCorrel = 0, bestPos = 0;
1009 int i;
1010 // It does us no good to find the sync pattern, with fewer than
1011 // 2048 samples after it...
1012 for (i = 0; i < (GraphTraceLen-2048); i++) {
1013 int sum = 0;
1014 int j;
1015 for (j = 0; j < arraylen(SyncPattern); j++) {
1016 sum += GraphBuffer[i+j]*SyncPattern[j];
1017 }
1018 if (sum > bestCorrel) {
1019 bestCorrel = sum;
1020 bestPos = i;
1021 }
1022 }
1023 PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
1024
1025 char bits[257];
1026 bits[256] = '\0';
1027
1028 int worst = INT_MAX;
1029 int worstPos = 0;
1030
1031 for (i = 0; i < 2048; i += 8) {
1032 int sum = 0;
1033 int j;
1034 for (j = 0; j < 8; j++) {
1035 sum += GraphBuffer[bestPos+i+j];
1036 }
1037 if (sum < 0) {
1038 bits[i/8] = '.';
1039 } else {
1040 bits[i/8] = '1';
1041 }
1042 if(abs(sum) < worst) {
1043 worst = abs(sum);
1044 worstPos = i;
1045 }
1046 }
1047 PrintAndLog("bits:");
1048 PrintAndLog("%s", bits);
1049 PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
1050
1051 if (strcmp(Cmd, "clone")==0) {
1052 GraphTraceLen = 0;
1053 char *s;
1054 for(s = bits; *s; s++) {
1055 int j;
1056 for(j = 0; j < 16; j++) {
1057 GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
1058 }
1059 }
1060 RepaintGraphWindow();
1061 }
1062 return 0;
1063 }
1064
1065 //by marshmellow
1066 int CmdLFfind(const char *Cmd)
1067 {
1068 int ans=0;
1069 char cmdp = param_getchar(Cmd, 0);
1070 char testRaw = param_getchar(Cmd, 1);
1071 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
1072 PrintAndLog("Usage: lf search <0|1> [u]");
1073 PrintAndLog(" <use data from Graphbuffer> , if not set, try reading data from tag.");
1074 PrintAndLog(" [Search for Unknown tags] , if not set, reads only known tags.");
1075 PrintAndLog("");
1076 PrintAndLog(" sample: lf search = try reading data from tag & search for known tags");
1077 PrintAndLog(" : lf search 1 = use data from GraphBuffer & search for known tags");
1078 PrintAndLog(" : lf search u = try reading data from tag & search for known and unknown tags");
1079 PrintAndLog(" : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
1080
1081 return 0;
1082 }
1083
1084 if (!offline && (cmdp != '1')){
1085 CmdLFRead("s");
1086 getSamples("30000",false);
1087 } else if (GraphTraceLen < 1000) {
1088 PrintAndLog("Data in Graphbuffer was too small.");
1089 return 0;
1090 }
1091 if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
1092
1093 PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
1094 PrintAndLog("False Positives ARE possible\n");
1095 PrintAndLog("\nChecking for known tags:\n");
1096
1097 ans=CmdFSKdemodIO("");
1098 if (ans>0) {
1099 PrintAndLog("\nValid IO Prox ID Found!");
1100 return 1;
1101 }
1102
1103 ans=CmdFSKdemodPyramid("");
1104 if (ans>0) {
1105 PrintAndLog("\nValid Pyramid ID Found!");
1106 return 1;
1107 }
1108
1109 ans=CmdFSKdemodParadox("");
1110 if (ans>0) {
1111 PrintAndLog("\nValid Paradox ID Found!");
1112 return 1;
1113 }
1114
1115 ans=CmdFSKdemodAWID("");
1116 if (ans>0) {
1117 PrintAndLog("\nValid AWID ID Found!");
1118 return 1;
1119 }
1120
1121 ans=CmdFSKdemodHID("");
1122 if (ans>0) {
1123 PrintAndLog("\nValid HID Prox ID Found!");
1124 return 1;
1125 }
1126
1127 //add psk and indala
1128 ans=CmdIndalaDecode("");
1129 if (ans>0) {
1130 PrintAndLog("\nValid Indala ID Found!");
1131 return 1;
1132 }
1133
1134 ans=CmdAskEM410xDemod("");
1135 if (ans>0) {
1136 PrintAndLog("\nValid EM410x ID Found!");
1137 return 1;
1138 }
1139
1140 ans=CmdG_Prox_II_Demod("");
1141 if (ans>0) {
1142 PrintAndLog("\nValid G Prox II ID Found!");
1143 return 1;
1144 }
1145
1146 ans=CmdFDXBdemodBI("");
1147 if (ans>0) {
1148 PrintAndLog("\nValid FDX-B ID Found!");
1149 return 1;
1150 }
1151
1152 ans=EM4x50Read("", false);
1153 if (ans>0) {
1154 PrintAndLog("\nValid EM4x50 ID Found!");
1155 return 1;
1156 }
1157
1158 ans=CmdPSKNexWatch("");
1159 if (ans>0) {
1160 PrintAndLog("\nValid NexWatch ID Found!");
1161 return 1;
1162 }
1163
1164 PrintAndLog("\nNo Known Tags Found!\n");
1165 if (testRaw=='u' || testRaw=='U'){
1166 //test unknown tag formats (raw mode)
1167 PrintAndLog("\nChecking for Unknown tags:\n");
1168 ans=AutoCorrelate(4000, FALSE, FALSE);
1169 if (ans > 0) PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
1170 ans=GetFskClock("",FALSE,FALSE);
1171 if (ans != 0){ //fsk
1172 ans=FSKrawDemod("",TRUE);
1173 if (ans>0) {
1174 PrintAndLog("\nUnknown FSK Modulated Tag Found!");
1175 return 1;
1176 }
1177 }
1178 ans=ASKDemod("0 0 0",TRUE,FALSE,1);
1179 if (ans>0) {
1180 PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
1181 PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
1182 return 1;
1183 }
1184 ans=CmdPSK1rawDemod("");
1185 if (ans>0) {
1186 PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
1187 PrintAndLog("\nCould also be PSK3 - [currently not supported]");
1188 PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
1189 return 1;
1190 }
1191 PrintAndLog("\nNo Data Found!\n");
1192 }
1193 return 0;
1194 }
1195
1196 static command_t CommandTable[] =
1197 {
1198 {"help", CmdHelp, 1, "This help"},
1199 {"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"},
1200 {"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"},
1201 {"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
1202 {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"},
1203 {"io", CmdLFIO, 1, "{ ioProx tags... }"},
1204 {"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 RFIDs... }"},
1205 {"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"},
1206 {"ti", CmdLFTI, 1, "{ TI RFIDs... }"},
1207 {"cmdread", CmdLFCommandRead, 0, "<d period> <z period> <o period> <c command> ['H'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'H' for 134)"},
1208 {"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
1209 {"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"},
1210 {"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
1211 {"indalaclone", CmdIndalaClone, 0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
1212 {"read", CmdLFRead, 0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
1213 {"search", CmdLFfind, 1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) - 'u' to search for unknown tags"},
1214 {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
1215 {"simask", CmdLFaskSim, 0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] -- Simulate LF ASK tag from demodbuffer or input"},
1216 {"simfsk", CmdLFfskSim, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] -- Simulate LF FSK tag from demodbuffer or input"},
1217 {"simpsk", CmdLFpskSim, 0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] -- Simulate LF PSK tag from demodbuffer or input"},
1218 {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
1219 {"snoop", CmdLFSnoop, 0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
1220 {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"},
1221 {NULL, NULL, 0, NULL}
1222 };
1223
1224 int CmdLF(const char *Cmd)
1225 {
1226 CmdsParse(CommandTable, Cmd);
1227 return 0;
1228 }
1229
1230 int CmdHelp(const char *Cmd)
1231 {
1232 CmdsHelp(CommandTable);
1233 return 0;
1234 }
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