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