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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 // Data and Graph 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 "ui.h"
18 #include "graph.h"
19 #include "cmdparser.h"
20 #include "util.h"
21 #include "cmdmain.h"
22 #include "cmddata.h"
23 #include "lfdemod.h"
24 #include "usb_cmd.h"
25 #include "crc.h"
26 #include "crc16.h"
27 #include "loclass/cipherutils.h"
28
29 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
30 uint8_t g_debugMode=0;
31 size_t DemodBufferLen=0;
32 static int CmdHelp(const char *Cmd);
33
34 //set the demod buffer with given array of binary (one bit per byte)
35 //by marshmellow
36 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
37 {
38 if (buff == NULL)
39 return;
40
41 if ( size >= MAX_DEMOD_BUF_LEN)
42 size = MAX_DEMOD_BUF_LEN;
43
44 size_t i = 0;
45 for (; i < size; i++){
46 DemodBuffer[i]=buff[startIdx++];
47 }
48 DemodBufferLen=size;
49 return;
50 }
51
52 int CmdSetDebugMode(const char *Cmd)
53 {
54 int demod=0;
55 sscanf(Cmd, "%i", &demod);
56 g_debugMode=(uint8_t)demod;
57 return 1;
58 }
59
60 int usage_data_printdemodbuf(){
61 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
62 PrintAndLog("Options:");
63 PrintAndLog(" h This help");
64 PrintAndLog(" x output in hex (omit for binary output)");
65 PrintAndLog(" o <offset> enter offset in # of bits");
66 return 0;
67 }
68
69 //by marshmellow
70 void printDemodBuff(void)
71 {
72 int bitLen = DemodBufferLen;
73 if (bitLen<1) {
74 PrintAndLog("no bits found in demod buffer");
75 return;
76 }
77 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
78
79 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
80 PrintAndLog("%s",bin);
81
82 return;
83 }
84
85 int CmdPrintDemodBuff(const char *Cmd)
86 {
87 char hex[512]={0x00};
88 bool hexMode = false;
89 bool errors = false;
90 uint8_t offset = 0;
91 char cmdp = 0;
92 while(param_getchar(Cmd, cmdp) != 0x00)
93 {
94 switch(param_getchar(Cmd, cmdp))
95 {
96 case 'h':
97 case 'H':
98 return usage_data_printdemodbuf();
99 case 'x':
100 case 'X':
101 hexMode = true;
102 cmdp++;
103 break;
104 case 'o':
105 case 'O':
106 offset = param_get8(Cmd, cmdp+1);
107 if (!offset) errors = true;
108 cmdp += 2;
109 break;
110 default:
111 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
112 errors = true;
113 break;
114 }
115 if(errors) break;
116 }
117 //Validations
118 if(errors) return usage_data_printdemodbuf();
119
120 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
121
122 if (hexMode){
123 char *buf = (char *) (DemodBuffer + offset);
124 numBits = binarraytohex(hex, buf, numBits);
125 if (numBits==0) return 0;
126 PrintAndLog("DemodBuffer: %s",hex);
127 } else {
128 //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
129 char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
130 PrintAndLog("DemodBuffer:\n%s",bin);
131 }
132 return 1;
133 }
134
135 //by marshmellow
136 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
137 int CmdGetBitStream(const char *Cmd)
138 {
139 int i;
140 CmdHpf(Cmd);
141 for (i = 0; i < GraphTraceLen; i++) {
142 if (GraphBuffer[i] >= 1) {
143 GraphBuffer[i] = 1;
144 } else {
145 GraphBuffer[i] = 0;
146 }
147 }
148 RepaintGraphWindow();
149 return 0;
150 }
151
152 //by marshmellow
153 //print 64 bit EM410x ID in multiple formats
154 void printEM410x(uint32_t hi, uint64_t id)
155 {
156 if (id || hi){
157 uint64_t iii=1;
158 uint64_t id2lo=0;
159 uint32_t ii=0;
160 uint32_t i=0;
161 for (ii=5; ii>0;ii--){
162 for (i=0;i<8;i++){
163 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
164 }
165 }
166 if (hi){
167 //output 88 bit em id
168 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
169 } else{
170 //output 40 bit em id
171 PrintAndLog("\nEM TAG ID : %010llX", id);
172 PrintAndLog("Unique TAG ID : %010llX", id2lo);
173 PrintAndLog("\nPossible de-scramble patterns");
174 PrintAndLog("HoneyWell IdentKey {");
175 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
176 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
177 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
179 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
180 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
181 PrintAndLog("DEZ 14/IK2 : %014lld",id);
182 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
183 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
184 (id2lo & 0xf000000000) >> 36,
185 (id2lo & 0x0f00000000) >> 32,
186 (id2lo & 0x00f0000000) >> 28,
187 (id2lo & 0x000f000000) >> 24,
188 (id2lo & 0x0000f00000) >> 20,
189 (id2lo & 0x00000f0000) >> 16,
190 (id2lo & 0x000000f000) >> 12,
191 (id2lo & 0x0000000f00) >> 8,
192 (id2lo & 0x00000000f0) >> 4,
193 (id2lo & 0x000000000f)
194 );
195 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
196 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
197 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
198
199 uint32_t p1id = (id & 0xFFFFFF);
200 uint8_t arr[32] = {0x00};
201 int i =0;
202 int j = 23;
203 for (; i < 24; ++i, --j ){
204 arr[i] = (p1id >> i) & 1;
205 }
206
207 uint32_t p1 = 0;
208
209 p1 |= arr[23] << 21;
210 p1 |= arr[22] << 23;
211 p1 |= arr[21] << 20;
212 p1 |= arr[20] << 22;
213
214 p1 |= arr[19] << 18;
215 p1 |= arr[18] << 16;
216 p1 |= arr[17] << 19;
217 p1 |= arr[16] << 17;
218
219 p1 |= arr[15] << 13;
220 p1 |= arr[14] << 15;
221 p1 |= arr[13] << 12;
222 p1 |= arr[12] << 14;
223
224 p1 |= arr[11] << 6;
225 p1 |= arr[10] << 2;
226 p1 |= arr[9] << 7;
227 p1 |= arr[8] << 1;
228
229 p1 |= arr[7] << 0;
230 p1 |= arr[6] << 8;
231 p1 |= arr[5] << 11;
232 p1 |= arr[4] << 3;
233
234 p1 |= arr[3] << 10;
235 p1 |= arr[2] << 4;
236 p1 |= arr[1] << 5;
237 p1 |= arr[0] << 9;
238 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
239
240 uint16_t sebury1 = id & 0xFFFF;
241 uint8_t sebury2 = (id >> 16) & 0x7F;
242 uint32_t sebury3 = id & 0x7FFFFF;
243 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
244 }
245 }
246 return;
247 }
248
249 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
250 {
251 size_t idx = 0;
252 size_t BitLen = DemodBufferLen;
253 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
254 memcpy(BitStream, DemodBuffer, BitLen);
255 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
256 //set GraphBuffer for clone or sim command
257 setDemodBuf(BitStream, BitLen, idx);
258 if (g_debugMode){
259 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
260 printDemodBuff();
261 }
262 if (verbose){
263 PrintAndLog("EM410x pattern found: ");
264 printEM410x(*hi, *lo);
265 }
266 return 1;
267 }
268 return 0;
269 }
270
271 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
272 {
273 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
274 return AskEm410xDecode(verbose, hi, lo);
275 }
276
277 //by marshmellow
278 //takes 3 arguments - clock, invert and maxErr as integers
279 //attempts to demodulate ask while decoding manchester
280 //prints binary found and saves in graphbuffer for further commands
281 int CmdAskEM410xDemod(const char *Cmd)
282 {
283 char cmdp = param_getchar(Cmd, 0);
284 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
285 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
286 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
287 PrintAndLog(" <invert>, 1 for invert output");
288 PrintAndLog(" [set maximum allowed errors], default = 100.");
289 PrintAndLog("");
290 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
291 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
292 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
293 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
294 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
295 return 0;
296 }
297 uint64_t lo = 0;
298 uint32_t hi = 0;
299 return AskEm410xDemod(Cmd, &hi, &lo, true);
300 }
301
302 //by marshmellow
303 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
304 // (amp may not be needed anymore)
305 //verbose will print results and demoding messages
306 //emSearch will auto search for EM410x format in bitstream
307 //askType switches decode: ask/raw = 0, ask/manchester = 1
308 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
309 {
310 int invert=0;
311 int clk=0;
312 int maxErr=100;
313 int maxLen=0;
314 uint8_t askAmp = 0;
315 char amp = param_getchar(Cmd, 0);
316 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
317 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
318 if (!maxLen) maxLen = 512*64;
319 if (invert != 0 && invert != 1) {
320 PrintAndLog("Invalid argument: %s", Cmd);
321 return 0;
322 }
323 if (clk==1){
324 invert=1;
325 clk=0;
326 }
327 if (amp == 'a' || amp == 'A') askAmp=1;
328 size_t BitLen = getFromGraphBuf(BitStream);
329 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
330 if (BitLen<255) return 0;
331 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
332
333 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
334 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
335 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
336 return 0;
337 }
338 if (errCnt>maxErr){
339 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
340 return 0;
341 }
342 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
343
344 //output
345 setDemodBuf(BitStream,BitLen,0);
346 if (verbose || g_debugMode){
347 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
348 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
349 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
350 // Now output the bitstream to the scrollback by line of 16 bits
351 printDemodBuff();
352
353 }
354 uint64_t lo = 0;
355 uint32_t hi = 0;
356 if (emSearch){
357 AskEm410xDecode(true, &hi, &lo);
358 }
359 return 1;
360 }
361
362 //by marshmellow
363 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
364 //attempts to demodulate ask while decoding manchester
365 //prints binary found and saves in graphbuffer for further commands
366 int Cmdaskmandemod(const char *Cmd)
367 {
368 char cmdp = param_getchar(Cmd, 0);
369 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
370 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
371 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
372 PrintAndLog(" <invert>, 1 to invert output");
373 PrintAndLog(" [set maximum allowed errors], default = 100");
374 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
375 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
376 PrintAndLog("");
377 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
378 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
379 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
380 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
381 PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
382 return 0;
383 }
384 return ASKDemod(Cmd, TRUE, TRUE, 1);
385 }
386
387 //by marshmellow
388 //manchester decode
389 //stricktly take 10 and 01 and convert to 0 and 1
390 int Cmdmandecoderaw(const char *Cmd)
391 {
392 int i =0;
393 int errCnt=0;
394 size_t size=0;
395 int invert=0;
396 int maxErr = 20;
397 char cmdp = param_getchar(Cmd, 0);
398 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
399 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
400 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
401 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
402 PrintAndLog(" [invert] invert output");
403 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
404 PrintAndLog("");
405 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
406 return 0;
407 }
408 if (DemodBufferLen==0) return 0;
409 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
410 int high=0,low=0;
411 for (;i<DemodBufferLen;++i){
412 if (DemodBuffer[i]>high) high=DemodBuffer[i];
413 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
414 BitStream[i]=DemodBuffer[i];
415 }
416 if (high>7 || low <0 ){
417 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
418 return 0;
419 }
420
421 sscanf(Cmd, "%i %i", &invert, &maxErr);
422 size=i;
423 errCnt=manrawdecode(BitStream, &size, invert);
424 if (errCnt>=maxErr){
425 PrintAndLog("Too many errors: %d",errCnt);
426 return 0;
427 }
428 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
429 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
430 if (errCnt==0){
431 uint64_t id = 0;
432 uint32_t hi = 0;
433 size_t idx=0;
434 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
435 //need to adjust to set bitstream back to manchester encoded data
436 //setDemodBuf(BitStream, size, idx);
437
438 printEM410x(hi, id);
439 }
440 }
441 return 1;
442 }
443
444 //by marshmellow
445 //biphase decode
446 //take 01 or 10 = 0 and 11 or 00 = 1
447 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
448 // and "invert" default = 0 if 1 it will invert output
449 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
450 int CmdBiphaseDecodeRaw(const char *Cmd)
451 {
452 size_t size=0;
453 int offset=0, invert=0, maxErr=20, errCnt=0;
454 char cmdp = param_getchar(Cmd, 0);
455 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
456 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
457 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
458 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
459 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
460 PrintAndLog("");
461 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
462 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
463 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
464 PrintAndLog("");
465 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
466 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
467 return 0;
468 }
469 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
470 if (DemodBufferLen==0){
471 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
472 return 0;
473 }
474 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
475 memcpy(BitStream, DemodBuffer, DemodBufferLen);
476 size = DemodBufferLen;
477 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
478 if (errCnt<0){
479 PrintAndLog("Error during decode:%d", errCnt);
480 return 0;
481 }
482 if (errCnt>maxErr){
483 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
484 return 0;
485 }
486
487 if (errCnt>0){
488 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
489 }
490 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
491 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
492
493 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
494 return 1;
495 }
496
497 //by marshmellow
498 // - ASK Demod then Biphase decode GraphBuffer samples
499 int ASKbiphaseDemod(const char *Cmd, bool verbose)
500 {
501 //ask raw demod GraphBuffer first
502 int offset=0, clk=0, invert=0, maxErr=0;
503 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
504
505 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
506 size_t size = getFromGraphBuf(BitStream);
507 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
508 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
509 if ( errCnt < 0 || errCnt > maxErr ) {
510 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
511 return 0;
512 }
513
514 //attempt to Biphase decode BitStream
515 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
516 if (errCnt < 0){
517 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
518 return 0;
519 }
520 if (errCnt > maxErr) {
521 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
522 return 0;
523 }
524 //success set DemodBuffer and return
525 setDemodBuf(BitStream, size, 0);
526 if (g_debugMode || verbose){
527 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
528 printDemodBuff();
529 }
530 return 1;
531 }
532 //by marshmellow - see ASKbiphaseDemod
533 int Cmdaskbiphdemod(const char *Cmd)
534 {
535 char cmdp = param_getchar(Cmd, 0);
536 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
537 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
538 PrintAndLog(" [offset], offset to begin biphase, default=0");
539 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
540 PrintAndLog(" <invert>, 1 to invert output");
541 PrintAndLog(" [set maximum allowed errors], default = 100");
542 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
543 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
544 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
545 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
546 PrintAndLog(" NOTE: any other arg must have previous args set to work");
547 PrintAndLog("");
548 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
549 PrintAndLog("");
550 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
551 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
552 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
553 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
554 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
555 PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
556 PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
557 return 0;
558 }
559 return ASKbiphaseDemod(Cmd, TRUE);
560 }
561
562 //by marshmellow
563 //attempts to demodulate and identify a G_Prox_II verex/chubb card
564 //WARNING: if it fails during some points it will destroy the DemodBuffer data
565 // but will leave the GraphBuffer intact.
566 //if successful it will push askraw data back to demod buffer ready for emulation
567 int CmdG_Prox_II_Demod(const char *Cmd)
568 {
569 if (!ASKbiphaseDemod(Cmd, FALSE)){
570 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
571 return 0;
572 }
573 size_t size = DemodBufferLen;
574 //call lfdemod.c demod for gProxII
575 int ans = gProxII_Demod(DemodBuffer, &size);
576 if (ans < 0){
577 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
578 return 0;
579 }
580 //got a good demod
581 uint32_t ByteStream[65] = {0x00};
582 uint8_t xorKey=0;
583 uint8_t keyCnt=0;
584 uint8_t bitCnt=0;
585 uint8_t ByteCnt=0;
586 size_t startIdx = ans + 6; //start after preamble
587 for (size_t idx = 0; idx<size-6; idx++){
588 if ((idx+1) % 5 == 0){
589 //spacer bit - should be 0
590 if (DemodBuffer[startIdx+idx] != 0) {
591 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
592 return 0;
593 }
594 continue;
595 }
596 if (keyCnt<8){ //lsb first
597 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
598 keyCnt++;
599 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
600 continue;
601 }
602 //lsb first
603 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
604 bitCnt++;
605 if (bitCnt % 8 == 0){
606 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
607 bitCnt=0;
608 ByteCnt++;
609 }
610 }
611 for (uint8_t i = 0; i < ByteCnt; i++){
612 ByteStream[i] ^= xorKey; //xor
613 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
614 }
615 //now ByteStream contains 64 bytes of decrypted raw tag data
616 //
617 uint8_t fmtLen = ByteStream[0]>>2;
618 uint32_t FC = 0;
619 uint32_t Card = 0;
620 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
621 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
622 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
623
624 if (fmtLen==36){
625 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
626 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
627 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
628 } else if(fmtLen==26){
629 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
630 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
631 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
632 } else {
633 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
634 }
635 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
636 setDemodBuf(DemodBuffer+ans, 96, 0);
637 return 1;
638 }
639
640 //by marshmellow - see ASKDemod
641 int Cmdaskrawdemod(const char *Cmd)
642 {
643 char cmdp = param_getchar(Cmd, 0);
644 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
645 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
646 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
647 PrintAndLog(" <invert>, 1 to invert output");
648 PrintAndLog(" [set maximum allowed errors], default = 100");
649 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
650 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
651 PrintAndLog("");
652 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
653 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
654 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
655 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
656 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
657 PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
658 PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
659 return 0;
660 }
661 return ASKDemod(Cmd, TRUE, FALSE, 0);
662 }
663
664 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
665 {
666 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
667 size_t Correlation = 0;
668 int maxSum = 0;
669 int lastMax = 0;
670 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
671 for (int i = 0; i < GraphTraceLen - window; ++i) {
672 int sum = 0;
673 for (int j = 0; j < window; ++j) {
674 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
675 }
676 CorrelBuffer[i] = sum;
677 if (sum >= maxSum-100 && sum <= maxSum+100){
678 //another max
679 Correlation = i-lastMax;
680 lastMax = i;
681 if (sum > maxSum) maxSum = sum;
682 } else if (sum > maxSum){
683 maxSum=sum;
684 lastMax = i;
685 }
686 }
687 if (Correlation==0){
688 //try again with wider margin
689 for (int i = 0; i < GraphTraceLen - window; i++){
690 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
691 //another max
692 Correlation = i-lastMax;
693 lastMax = i;
694 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
695 }
696 }
697 }
698 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
699
700 if (SaveGrph){
701 GraphTraceLen = GraphTraceLen - window;
702 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
703 RepaintGraphWindow();
704 }
705 return Correlation;
706 }
707
708 int usage_data_autocorr(void)
709 {
710 //print help
711 PrintAndLog("Usage: data autocorr [window] [g]");
712 PrintAndLog("Options: ");
713 PrintAndLog(" h This help");
714 PrintAndLog(" [window] window length for correlation - default = 4000");
715 PrintAndLog(" g save back to GraphBuffer (overwrite)");
716 return 0;
717 }
718
719 int CmdAutoCorr(const char *Cmd)
720 {
721 char cmdp = param_getchar(Cmd, 0);
722 if (cmdp == 'h' || cmdp == 'H')
723 return usage_data_autocorr();
724 int window = 4000; //set default
725 char grph=0;
726 bool updateGrph = FALSE;
727 sscanf(Cmd, "%i %c", &window, &grph);
728
729 if (window >= GraphTraceLen) {
730 PrintAndLog("window must be smaller than trace (%d samples)",
731 GraphTraceLen);
732 return 0;
733 }
734 if (grph == 'g') updateGrph=TRUE;
735 return AutoCorrelate(window, updateGrph, TRUE);
736 }
737
738 int CmdBitsamples(const char *Cmd)
739 {
740 int cnt = 0;
741 uint8_t got[12288];
742
743 GetFromBigBuf(got,sizeof(got),0);
744 WaitForResponse(CMD_ACK,NULL);
745
746 for (int j = 0; j < sizeof(got); j++) {
747 for (int k = 0; k < 8; k++) {
748 if(got[j] & (1 << (7 - k))) {
749 GraphBuffer[cnt++] = 1;
750 } else {
751 GraphBuffer[cnt++] = 0;
752 }
753 }
754 }
755 GraphTraceLen = cnt;
756 RepaintGraphWindow();
757 return 0;
758 }
759
760 int CmdBuffClear(const char *Cmd)
761 {
762 UsbCommand c = {CMD_BUFF_CLEAR};
763 SendCommand(&c);
764 ClearGraph(true);
765 return 0;
766 }
767
768 int CmdDec(const char *Cmd)
769 {
770 for (int i = 0; i < (GraphTraceLen / 2); ++i)
771 GraphBuffer[i] = GraphBuffer[i * 2];
772 GraphTraceLen /= 2;
773 PrintAndLog("decimated by 2");
774 RepaintGraphWindow();
775 return 0;
776 }
777 /**
778 * Undecimate - I'd call it 'interpolate', but we'll save that
779 * name until someone does an actual interpolation command, not just
780 * blindly repeating samples
781 * @param Cmd
782 * @return
783 */
784 int CmdUndec(const char *Cmd)
785 {
786 if(param_getchar(Cmd, 0) == 'h')
787 {
788 PrintAndLog("Usage: data undec [factor]");
789 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
790 PrintAndLog("Options: ");
791 PrintAndLog(" h This help");
792 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
793 PrintAndLog("Example: 'data undec 3'");
794 return 0;
795 }
796
797 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
798 //We have memory, don't we?
799 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
800 uint32_t g_index = 0 ,s_index = 0;
801 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
802 {
803 int count = 0;
804 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
805 swap[s_index+count] = GraphBuffer[g_index];
806 s_index+=count;
807 }
808
809 memcpy(GraphBuffer,swap, s_index * sizeof(int));
810 GraphTraceLen = s_index;
811 RepaintGraphWindow();
812 return 0;
813 }
814
815 //by marshmellow
816 //shift graph zero up or down based on input + or -
817 int CmdGraphShiftZero(const char *Cmd)
818 {
819
820 int shift=0;
821 //set options from parameters entered with the command
822 sscanf(Cmd, "%i", &shift);
823 int shiftedVal=0;
824 for(int i = 0; i<GraphTraceLen; i++){
825 shiftedVal=GraphBuffer[i]+shift;
826 if (shiftedVal>127)
827 shiftedVal=127;
828 else if (shiftedVal<-127)
829 shiftedVal=-127;
830 GraphBuffer[i]= shiftedVal;
831 }
832 CmdNorm("");
833 return 0;
834 }
835
836 //by marshmellow
837 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
838 //similar to dirtheshold, threshold commands
839 //takes a threshold length which is the measured length between two samples then determines an edge
840 int CmdAskEdgeDetect(const char *Cmd)
841 {
842 int thresLen = 25;
843 sscanf(Cmd, "%i", &thresLen);
844
845 for(int i = 1; i<GraphTraceLen; i++){
846 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
847 GraphBuffer[i-1] = 127;
848 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
849 GraphBuffer[i-1] = -127;
850 }
851 RepaintGraphWindow();
852 return 0;
853 }
854
855 /* Print our clock rate */
856 // uses data from graphbuffer
857 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
858 int CmdDetectClockRate(const char *Cmd)
859 {
860 char cmdp = param_getchar(Cmd, 0);
861 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
862 PrintAndLog("Usage: data detectclock [modulation] <clock>");
863 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
864 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
865 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
866 PrintAndLog("");
867 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
868 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
869 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
870 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
871 }
872 int ans=0;
873 if (cmdp == 'a'){
874 ans = GetAskClock(Cmd+1, true, false);
875 } else if (cmdp == 'f'){
876 ans = GetFskClock("", true, false);
877 } else if (cmdp == 'n'){
878 ans = GetNrzClock("", true, false);
879 } else if (cmdp == 'p'){
880 ans = GetPskClock("", true, false);
881 } else {
882 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
883 }
884 return ans;
885 }
886
887 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
888 {
889 char *fskType;
890 if (fchigh==10 && fclow==8){
891 if (invert) //fsk2a
892 fskType = "FSK2a";
893 else //fsk2
894 fskType = "FSK2";
895 } else if (fchigh == 8 && fclow == 5) {
896 if (invert)
897 fskType = "FSK1";
898 else
899 fskType = "FSK1a";
900 } else {
901 fskType = "FSK??";
902 }
903 return fskType;
904 }
905
906 //by marshmellow
907 //fsk raw demod and print binary
908 //takes 4 arguments - Clock, invert, fchigh, fclow
909 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
910 int FSKrawDemod(const char *Cmd, bool verbose)
911 {
912 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
913 //set defaults
914 int rfLen = 0;
915 int invert = 0;
916 int fchigh = 0;
917 int fclow = 0;
918
919 //set options from parameters entered with the command
920 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
921
922 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
923 if (rfLen==1){
924 invert = 1; //if invert option only is used
925 rfLen = 0;
926 }
927 }
928
929 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
930 size_t BitLen = getFromGraphBuf(BitStream);
931 if (BitLen==0) return 0;
932 //get field clock lengths
933 uint16_t fcs=0;
934 if (fchigh==0 || fclow == 0){
935 fcs = countFC(BitStream, BitLen, 1);
936 if (fcs==0){
937 fchigh=10;
938 fclow=8;
939 }else{
940 fchigh = (fcs >> 8) & 0xFF;
941 fclow = fcs & 0xFF;
942 }
943 }
944 //get bit clock length
945 if (rfLen==0){
946 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
947 if (rfLen == 0) rfLen = 50;
948 }
949 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
950 if (size>0){
951 setDemodBuf(BitStream,size,0);
952
953 // Now output the bitstream to the scrollback by line of 16 bits
954 if (verbose || g_debugMode) {
955 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
956 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
957 printDemodBuff();
958 }
959
960 return 1;
961 } else{
962 if (g_debugMode) PrintAndLog("no FSK data found");
963 }
964 return 0;
965 }
966
967 //by marshmellow
968 //fsk raw demod and print binary
969 //takes 4 arguments - Clock, invert, fchigh, fclow
970 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
971 int CmdFSKrawdemod(const char *Cmd)
972 {
973 char cmdp = param_getchar(Cmd, 0);
974 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
975 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
976 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
977 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
978 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
979 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
980 PrintAndLog("");
981 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
982 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
983 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
984 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
985 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
986 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
987 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
988 return 0;
989 }
990 return FSKrawDemod(Cmd, TRUE);
991 }
992
993 //by marshmellow (based on existing demod + holiman's refactor)
994 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
995 //print full HID Prox ID and some bit format details if found
996 int CmdFSKdemodHID(const char *Cmd)
997 {
998 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
999 uint32_t hi2=0, hi=0, lo=0;
1000
1001 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1002 size_t BitLen = getFromGraphBuf(BitStream);
1003 if (BitLen==0) return 0;
1004 //get binary from fsk wave
1005 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1006 if (idx<0){
1007 if (g_debugMode){
1008 if (idx==-1){
1009 PrintAndLog("DEBUG: Just Noise Detected");
1010 } else if (idx == -2) {
1011 PrintAndLog("DEBUG: Error demoding fsk");
1012 } else if (idx == -3) {
1013 PrintAndLog("DEBUG: Preamble not found");
1014 } else if (idx == -4) {
1015 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1016 } else {
1017 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1018 }
1019 }
1020 return 0;
1021 }
1022 if (hi2==0 && hi==0 && lo==0) {
1023 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1024 return 0;
1025 }
1026 if (hi2 != 0){ //extra large HID tags
1027 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1028 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1029 }
1030 else { //standard HID tags <38 bits
1031 uint8_t fmtLen = 0;
1032 uint32_t fc = 0;
1033 uint32_t cardnum = 0;
1034 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1035 uint32_t lo2=0;
1036 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1037 uint8_t idx3 = 1;
1038 while(lo2>1){ //find last bit set to 1 (format len bit)
1039 lo2=lo2>>1;
1040 idx3++;
1041 }
1042 fmtLen =idx3+19;
1043 fc =0;
1044 cardnum=0;
1045 if(fmtLen==26){
1046 cardnum = (lo>>1)&0xFFFF;
1047 fc = (lo>>17)&0xFF;
1048 }
1049 if(fmtLen==34){
1050 cardnum = (lo>>1)&0xFFFF;
1051 fc= ((hi&1)<<15)|(lo>>17);
1052 }
1053 if(fmtLen==35){
1054 cardnum = (lo>>1)&0xFFFFF;
1055 fc = ((hi&1)<<11)|(lo>>21);
1056 }
1057 }
1058 else { //if bit 38 is not set then 37 bit format is used
1059 fmtLen = 37;
1060 fc = 0;
1061 cardnum = 0;
1062 if(fmtLen == 37){
1063 cardnum = (lo>>1)&0x7FFFF;
1064 fc = ((hi&0xF)<<12)|(lo>>20);
1065 }
1066 }
1067 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1068 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1069 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1070 }
1071 setDemodBuf(BitStream,BitLen,idx);
1072 if (g_debugMode){
1073 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1074 printDemodBuff();
1075 }
1076 return 1;
1077 }
1078
1079 //by marshmellow
1080 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1081 //print full Paradox Prox ID and some bit format details if found
1082 int CmdFSKdemodParadox(const char *Cmd)
1083 {
1084 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1085 uint32_t hi2=0, hi=0, lo=0;
1086
1087 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1088 size_t BitLen = getFromGraphBuf(BitStream);
1089 if (BitLen==0) return 0;
1090 //get binary from fsk wave
1091 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1092 if (idx<0){
1093 if (g_debugMode){
1094 if (idx==-1){
1095 PrintAndLog("DEBUG: Just Noise Detected");
1096 } else if (idx == -2) {
1097 PrintAndLog("DEBUG: Error demoding fsk");
1098 } else if (idx == -3) {
1099 PrintAndLog("DEBUG: Preamble not found");
1100 } else if (idx == -4) {
1101 PrintAndLog("DEBUG: Error in Manchester data");
1102 } else {
1103 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1104 }
1105 }
1106 return 0;
1107 }
1108 if (hi2==0 && hi==0 && lo==0){
1109 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1110 return 0;
1111 }
1112 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1113 uint32_t cardnum = (lo>>10)&0xFFFF;
1114 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1115 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1116 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1117
1118 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1119 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1120 setDemodBuf(BitStream,BitLen,idx);
1121 if (g_debugMode){
1122 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1123 printDemodBuff();
1124 }
1125 return 1;
1126 }
1127
1128 //by marshmellow
1129 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1130 //print ioprox ID and some format details
1131 int CmdFSKdemodIO(const char *Cmd)
1132 {
1133 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1134 //set defaults
1135 int idx=0;
1136 //something in graphbuffer?
1137 if (GraphTraceLen < 65) {
1138 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1139 return 0;
1140 }
1141 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1142 size_t BitLen = getFromGraphBuf(BitStream);
1143 if (BitLen==0) return 0;
1144
1145 //get binary from fsk wave
1146 idx = IOdemodFSK(BitStream,BitLen);
1147 if (idx<0){
1148 if (g_debugMode){
1149 if (idx==-1){
1150 PrintAndLog("DEBUG: Just Noise Detected");
1151 } else if (idx == -2) {
1152 PrintAndLog("DEBUG: not enough samples");
1153 } else if (idx == -3) {
1154 PrintAndLog("DEBUG: error during fskdemod");
1155 } else if (idx == -4) {
1156 PrintAndLog("DEBUG: Preamble not found");
1157 } else if (idx == -5) {
1158 PrintAndLog("DEBUG: Separator bits not found");
1159 } else {
1160 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1161 }
1162 }
1163 return 0;
1164 }
1165 if (idx==0){
1166 if (g_debugMode){
1167 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1168 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1169 }
1170 return 0;
1171 }
1172 //Index map
1173 //0 10 20 30 40 50 60
1174 //| | | | | | |
1175 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1176 //-----------------------------------------------------------------------------
1177 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1178 //
1179 //XSF(version)facility:codeone+codetwo (raw)
1180 //Handle the data
1181 if (idx+64>BitLen) {
1182 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1183 return 0;
1184 }
1185 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
1186 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
1187 PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
1188 PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
1189 PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
1190 PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
1191 PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
1192
1193 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1194 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1195 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1196 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1197 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1198 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1199 uint16_t calccrc = 0;
1200
1201 for (uint8_t i=1; i<6; ++i){
1202 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1203 }
1204 calccrc &= 0xff;
1205 calccrc = 0xff - calccrc;
1206
1207 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1208
1209 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1210 setDemodBuf(BitStream,64,idx);
1211 if (g_debugMode){
1212 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1213 printDemodBuff();
1214 }
1215 return 1;
1216 }
1217
1218 //by marshmellow
1219 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1220 //print full AWID Prox ID and some bit format details if found
1221 int CmdFSKdemodAWID(const char *Cmd)
1222 {
1223 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1224 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1225 size_t size = getFromGraphBuf(BitStream);
1226 if (size==0) return 0;
1227
1228 //get binary from fsk wave
1229 int idx = AWIDdemodFSK(BitStream, &size);
1230 if (idx<=0){
1231 if (g_debugMode==1){
1232 if (idx == -1)
1233 PrintAndLog("DEBUG: Error - not enough samples");
1234 else if (idx == -2)
1235 PrintAndLog("DEBUG: Error - only noise found");
1236 else if (idx == -3)
1237 PrintAndLog("DEBUG: Error - problem during FSK demod");
1238 else if (idx == -4)
1239 PrintAndLog("DEBUG: Error - AWID preamble not found");
1240 else if (idx == -5)
1241 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1242 else
1243 PrintAndLog("DEBUG: Error %d",idx);
1244 }
1245 return 0;
1246 }
1247
1248 // Index map
1249 // 0 10 20 30 40 50 60
1250 // | | | | | | |
1251 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
1252 // -----------------------------------------------------------------------------
1253 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
1254 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
1255 // |---26 bit---| |-----117----||-------------142-------------|
1256 // b = format bit len, o = odd parity of last 3 bits
1257 // f = facility code, c = card number
1258 // w = wiegand parity
1259 // (26 bit format shown)
1260
1261 //get raw ID before removing parities
1262 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1263 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1264 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1265 setDemodBuf(BitStream,96,idx);
1266
1267 size = removeParity(BitStream, idx+8, 4, 1, 88);
1268 if (size != 66){
1269 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1270 return 0;
1271 }
1272 // ok valid card found!
1273
1274 // Index map
1275 // 0 10 20 30 40 50 60
1276 // | | | | | | |
1277 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1278 // -----------------------------------------------------------------------------
1279 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1280 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1281 // |26 bit| |-117--| |-----142------|
1282 // b = format bit len, o = odd parity of last 3 bits
1283 // f = facility code, c = card number
1284 // w = wiegand parity
1285 // (26 bit format shown)
1286
1287 uint32_t fc = 0;
1288 uint32_t cardnum = 0;
1289 uint32_t code1 = 0;
1290 uint32_t code2 = 0;
1291 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1292 if (fmtLen==26){
1293 fc = bytebits_to_byte(BitStream+9, 8);
1294 cardnum = bytebits_to_byte(BitStream+17, 16);
1295 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1296 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1297 } else {
1298 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1299 if (fmtLen>32){
1300 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1301 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1302 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1303 } else{
1304 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1305 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1306 }
1307 }
1308 if (g_debugMode){
1309 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1310 printDemodBuff();
1311 }
1312 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1313 return 1;
1314 }
1315
1316 //by marshmellow
1317 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1318 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1319 int CmdFSKdemodPyramid(const char *Cmd)
1320 {
1321 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1322 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1323 size_t size = getFromGraphBuf(BitStream);
1324 if (size==0) return 0;
1325
1326 //get binary from fsk wave
1327 int idx = PyramiddemodFSK(BitStream, &size);
1328 if (idx < 0){
1329 if (g_debugMode==1){
1330 if (idx == -5)
1331 PrintAndLog("DEBUG: Error - not enough samples");
1332 else if (idx == -1)
1333 PrintAndLog("DEBUG: Error - only noise found");
1334 else if (idx == -2)
1335 PrintAndLog("DEBUG: Error - problem during FSK demod");
1336 else if (idx == -3)
1337 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1338 else if (idx == -4)
1339 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1340 else
1341 PrintAndLog("DEBUG: Error - idx: %d",idx);
1342 }
1343 return 0;
1344 }
1345 // Index map
1346 // 0 10 20 30 40 50 60
1347 // | | | | | | |
1348 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1349 // -----------------------------------------------------------------------------
1350 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1351 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1352
1353 // 64 70 80 90 100 110 120
1354 // | | | | | | |
1355 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1356 // -----------------------------------------------------------------------------
1357 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1358 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1359 // |---115---||---------71---------|
1360 // s = format start bit, o = odd parity of last 7 bits
1361 // f = facility code, c = card number
1362 // w = wiegand parity, x = extra space for other formats
1363 // p = unknown checksum
1364 // (26 bit format shown)
1365
1366 //get bytes for checksum calc
1367 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1368 uint8_t csBuff[14] = {0x00};
1369 for (uint8_t i = 0; i < 13; i++){
1370 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1371 }
1372 //check checksum calc
1373 //checksum calc thanks to ICEMAN!!
1374 uint32_t checkCS = CRC8Maxim(csBuff,13);
1375
1376 //get raw ID before removing parities
1377 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1378 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1379 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1380 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1381 setDemodBuf(BitStream,128,idx);
1382
1383 size = removeParity(BitStream, idx+8, 8, 1, 120);
1384 if (size != 105){
1385 if (g_debugMode==1)
1386 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1387 return 0;
1388 }
1389
1390 // ok valid card found!
1391
1392 // Index map
1393 // 0 10 20 30 40 50 60 70
1394 // | | | | | | | |
1395 // 01234567890123456789012345678901234567890123456789012345678901234567890
1396 // -----------------------------------------------------------------------
1397 // 00000000000000000000000000000000000000000000000000000000000000000000000
1398 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1399
1400 // 71 80 90 100
1401 // | | | |
1402 // 1 2 34567890 1234567890123456 7 8901234
1403 // ---------------------------------------
1404 // 1 1 01110011 0000000001000110 0 1001010
1405 // s w ffffffff cccccccccccccccc w ppppppp
1406 // |--115-| |------71------|
1407 // s = format start bit, o = odd parity of last 7 bits
1408 // f = facility code, c = card number
1409 // w = wiegand parity, x = extra space for other formats
1410 // p = unknown checksum
1411 // (26 bit format shown)
1412
1413 //find start bit to get fmtLen
1414 int j;
1415 for (j=0; j<size; j++){
1416 if(BitStream[j]) break;
1417 }
1418 uint8_t fmtLen = size-j-8;
1419 uint32_t fc = 0;
1420 uint32_t cardnum = 0;
1421 uint32_t code1 = 0;
1422 if (fmtLen==26){
1423 fc = bytebits_to_byte(BitStream+73, 8);
1424 cardnum = bytebits_to_byte(BitStream+81, 16);
1425 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1426 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
1427 } else if (fmtLen==45){
1428 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1429 fc = bytebits_to_byte(BitStream+53, 10);
1430 cardnum = bytebits_to_byte(BitStream+63, 32);
1431 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1432 } else {
1433 cardnum = bytebits_to_byte(BitStream+81, 16);
1434 if (fmtLen>32){
1435 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1436 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1437 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1438 } else{
1439 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1440 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1441 }
1442 }
1443 if (checksum == checkCS)
1444 PrintAndLog("Checksum %02x passed", checksum);
1445 else
1446 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1447
1448 if (g_debugMode){
1449 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1450 printDemodBuff();
1451 }
1452 return 1;
1453 }
1454
1455 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1456 // 8 databits + 1 parity (1)
1457 // CIITT 16 chksum
1458 // NATIONAL CODE, ICAR database
1459 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1460 // FLAG (animal/non-animal)
1461 /*
1462 38 IDbits
1463 10 country code
1464 1 extra app bit
1465 14 reserved bits
1466 1 animal bit
1467 16 ccitt CRC chksum over 64bit ID CODE.
1468 24 appli bits.
1469
1470 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1471 */
1472 int CmdFDXBdemodBI(const char *Cmd){
1473
1474 int invert = 1;
1475 int clk = 32;
1476 int errCnt = 0;
1477 int maxErr = 0;
1478 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1479 size_t size = getFromGraphBuf(BitStream);
1480
1481 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1482 if ( errCnt < 0 || errCnt > maxErr ) {
1483 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1484 return 0;
1485 }
1486
1487 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1488 if (errCnt < 0 || errCnt > maxErr ) {
1489 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1490 return 0;
1491 }
1492
1493 int preambleIndex = FDXBdemodBI(BitStream, &size);
1494 if (preambleIndex < 0){
1495 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1496 return 0;
1497 }
1498
1499 setDemodBuf(BitStream, 128, preambleIndex);
1500
1501 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1502 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1503 if ( size != 104 ) {
1504 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1505 return 0;
1506 }
1507 if (g_debugMode) {
1508 char *bin = sprint_bin_break(BitStream,size,16);
1509 PrintAndLog("DEBUG BinStream:\n%s",bin);
1510 }
1511 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1512 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1513
1514 //got a good demod
1515 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1516 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1517 uint8_t dataBlockBit = BitStream[48];
1518 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1519 uint8_t animalBit = BitStream[63];
1520 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1521 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1522
1523 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1524 uint8_t raw[8];
1525 num_to_bytes(rawid, 8, raw);
1526
1527 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1528
1529 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1530 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1531 PrintAndLog("National Code: %012llu", NationalCode);
1532 PrintAndLog("CountryCode: %04u", countryCode);
1533 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1534 PrintAndLog("reserved Code: %u", reservedCode);
1535 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1536 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1537 PrintAndLog("Extended: 0x%X\n", extended);
1538
1539 return 1;
1540 }
1541
1542
1543 //by marshmellow
1544 //attempt to psk1 demod graph buffer
1545 int PSKDemod(const char *Cmd, bool verbose)
1546 {
1547 int invert=0;
1548 int clk=0;
1549 int maxErr=100;
1550 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1551 if (clk==1){
1552 invert=1;
1553 clk=0;
1554 }
1555 if (invert != 0 && invert != 1) {
1556 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1557 return 0;
1558 }
1559 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1560 size_t BitLen = getFromGraphBuf(BitStream);
1561 if (BitLen==0) return 0;
1562 uint8_t carrier=countFC(BitStream, BitLen, 0);
1563 if (carrier!=2 && carrier!=4 && carrier!=8){
1564 //invalid carrier
1565 return 0;
1566 }
1567 int errCnt=0;
1568 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1569 if (errCnt > maxErr){
1570 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1571 return 0;
1572 }
1573 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1574 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1575 return 0;
1576 }
1577 if (verbose || g_debugMode){
1578 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1579 if (errCnt>0){
1580 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1581 }
1582 }
1583 //prime demod buffer for output
1584 setDemodBuf(BitStream,BitLen,0);
1585 return 1;
1586 }
1587
1588 // Indala 26 bit decode
1589 // by marshmellow
1590 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1591 int CmdIndalaDecode(const char *Cmd)
1592 {
1593 int ans;
1594 if (strlen(Cmd)>0){
1595 ans = PSKDemod(Cmd, 0);
1596 } else{ //default to RF/32
1597 ans = PSKDemod("32", 0);
1598 }
1599
1600 if (!ans){
1601 if (g_debugMode==1)
1602 PrintAndLog("Error1: %d",ans);
1603 return 0;
1604 }
1605 uint8_t invert=0;
1606 ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
1607 if (ans < 1) {
1608 if (g_debugMode==1)
1609 PrintAndLog("Error2: %d",ans);
1610 return -1;
1611 }
1612 char showbits[251]={0x00};
1613 if (invert)
1614 if (g_debugMode==1)
1615 PrintAndLog("Had to invert bits");
1616
1617 //convert UID to HEX
1618 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1619 int idx;
1620 uid1=0;
1621 uid2=0;
1622 PrintAndLog("BitLen: %d",DemodBufferLen);
1623 if (DemodBufferLen==64){
1624 for( idx=0; idx<64; idx++) {
1625 uid1=(uid1<<1)|(uid2>>31);
1626 if (DemodBuffer[idx] == 0) {
1627 uid2=(uid2<<1)|0;
1628 showbits[idx]='0';
1629 } else {
1630 uid2=(uid2<<1)|1;
1631 showbits[idx]='1';
1632 }
1633 }
1634 showbits[idx]='\0';
1635 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1636 }
1637 else {
1638 uid3=0;
1639 uid4=0;
1640 uid5=0;
1641 uid6=0;
1642 uid7=0;
1643 for( idx=0; idx<DemodBufferLen; idx++) {
1644 uid1=(uid1<<1)|(uid2>>31);
1645 uid2=(uid2<<1)|(uid3>>31);
1646 uid3=(uid3<<1)|(uid4>>31);
1647 uid4=(uid4<<1)|(uid5>>31);
1648 uid5=(uid5<<1)|(uid6>>31);
1649 uid6=(uid6<<1)|(uid7>>31);
1650 if (DemodBuffer[idx] == 0) {
1651 uid7=(uid7<<1)|0;
1652 showbits[idx]='0';
1653 }
1654 else {
1655 uid7=(uid7<<1)|1;
1656 showbits[idx]='1';
1657 }
1658 }
1659 showbits[idx]='\0';
1660 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1661 }
1662 if (g_debugMode){
1663 PrintAndLog("DEBUG: printing demodbuffer:");
1664 printDemodBuff();
1665 }
1666 return 1;
1667 }
1668
1669 int CmdPSKNexWatch(const char *Cmd)
1670 {
1671 if (!PSKDemod("", false)) return 0;
1672 uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
1673 size_t startIdx = 0, size = DemodBufferLen;
1674 bool invert = false;
1675 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1676 // if didn't find preamble try again inverting
1677 if (!PSKDemod("1", false)) return 0;
1678 size = DemodBufferLen;
1679 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1680 invert = true;
1681 }
1682 if (size != 128) return 0;
1683 setDemodBuf(DemodBuffer, size, startIdx+4);
1684 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1685 //get ID
1686 uint32_t ID = 0;
1687 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1688 for (uint8_t idx=0; idx<8; idx++){
1689 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1690 }
1691 }
1692 //parity check (TBD)
1693
1694 //checksum check (TBD)
1695
1696 //output
1697 PrintAndLog("NexWatch ID: %d", ID);
1698 if (invert){
1699 PrintAndLog("Had to Invert - probably NexKey");
1700 for (uint8_t idx=0; idx<size; idx++)
1701 DemodBuffer[idx] ^= 1;
1702 }
1703
1704 CmdPrintDemodBuff("x");
1705 return 1;
1706 }
1707
1708 // by marshmellow
1709 // takes 3 arguments - clock, invert, maxErr as integers
1710 // attempts to demodulate nrz only
1711 // prints binary found and saves in demodbuffer for further commands
1712 int NRZrawDemod(const char *Cmd, bool verbose)
1713 {
1714 int invert=0;
1715 int clk=0;
1716 int maxErr=100;
1717 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1718 if (clk==1){
1719 invert=1;
1720 clk=0;
1721 }
1722 if (invert != 0 && invert != 1) {
1723 PrintAndLog("Invalid argument: %s", Cmd);
1724 return 0;
1725 }
1726 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1727 size_t BitLen = getFromGraphBuf(BitStream);
1728 if (BitLen==0) return 0;
1729 int errCnt=0;
1730 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1731 if (errCnt > maxErr){
1732 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1733 return 0;
1734 }
1735 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1736 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1737 return 0;
1738 }
1739 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1740 //prime demod buffer for output
1741 setDemodBuf(BitStream,BitLen,0);
1742
1743 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1744 if (verbose || g_debugMode) {
1745 PrintAndLog("NRZ demoded bitstream:");
1746 // Now output the bitstream to the scrollback by line of 16 bits
1747 printDemodBuff();
1748 }
1749 return 1;
1750 }
1751
1752 int CmdNRZrawDemod(const char *Cmd)
1753 {
1754 char cmdp = param_getchar(Cmd, 0);
1755 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1756 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1757 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1758 PrintAndLog(" <invert>, 1 for invert output");
1759 PrintAndLog(" [set maximum allowed errors], default = 100.");
1760 PrintAndLog("");
1761 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1762 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1763 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1764 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1765 PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1766 return 0;
1767 }
1768 return NRZrawDemod(Cmd, TRUE);
1769 }
1770
1771 // by marshmellow
1772 // takes 3 arguments - clock, invert, maxErr as integers
1773 // attempts to demodulate psk only
1774 // prints binary found and saves in demodbuffer for further commands
1775 int CmdPSK1rawDemod(const char *Cmd)
1776 {
1777 int ans;
1778 char cmdp = param_getchar(Cmd, 0);
1779 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1780 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1781 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1782 PrintAndLog(" <invert>, 1 for invert output");
1783 PrintAndLog(" [set maximum allowed errors], default = 100.");
1784 PrintAndLog("");
1785 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1786 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1787 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1788 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1789 PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1790 return 0;
1791 }
1792 ans = PSKDemod(Cmd, TRUE);
1793 //output
1794 if (!ans){
1795 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1796 return 0;
1797 }
1798
1799 PrintAndLog("PSK1 demoded bitstream:");
1800 // Now output the bitstream to the scrollback by line of 16 bits
1801 printDemodBuff();
1802 return 1;
1803 }
1804
1805 // by marshmellow
1806 // takes same args as cmdpsk1rawdemod
1807 int CmdPSK2rawDemod(const char *Cmd)
1808 {
1809 int ans=0;
1810 char cmdp = param_getchar(Cmd, 0);
1811 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1812 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1813 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1814 PrintAndLog(" <invert>, 1 for invert output");
1815 PrintAndLog(" [set maximum allowed errors], default = 100.");
1816 PrintAndLog("");
1817 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1818 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1819 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1820 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1821 PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
1822 return 0;
1823 }
1824 ans=PSKDemod(Cmd, TRUE);
1825 if (!ans){
1826 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1827 return 0;
1828 }
1829 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1830 PrintAndLog("PSK2 demoded bitstream:");
1831 // Now output the bitstream to the scrollback by line of 16 bits
1832 printDemodBuff();
1833 return 1;
1834 }
1835
1836 // by marshmellow - combines all raw demod functions into one menu command
1837 int CmdRawDemod(const char *Cmd)
1838 {
1839 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1840
1841 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1842 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1843 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1844 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1845 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1846 PrintAndLog(" <options> see specific modulation help for optional parameters");
1847 PrintAndLog("");
1848 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1849 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1850 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1851 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1852 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1853 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1854 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1855 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1856 return 0;
1857 }
1858 char cmdp2 = Cmd[1];
1859 int ans = 0;
1860 if (cmdp == 'f' && cmdp2 == 's'){
1861 ans = CmdFSKrawdemod(Cmd+2);
1862 } else if(cmdp == 'a' && cmdp2 == 'b'){
1863 ans = Cmdaskbiphdemod(Cmd+2);
1864 } else if(cmdp == 'a' && cmdp2 == 'm'){
1865 ans = Cmdaskmandemod(Cmd+2);
1866 } else if(cmdp == 'a' && cmdp2 == 'r'){
1867 ans = Cmdaskrawdemod(Cmd+2);
1868 } else if(cmdp == 'n' && cmdp2 == 'r'){
1869 ans = CmdNRZrawDemod(Cmd+2);
1870 } else if(cmdp == 'p' && cmdp2 == '1'){
1871 ans = CmdPSK1rawDemod(Cmd+2);
1872 } else if(cmdp == 'p' && cmdp2 == '2'){
1873 ans = CmdPSK2rawDemod(Cmd+2);
1874 } else {
1875 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1876 }
1877 return ans;
1878 }
1879
1880 int CmdGrid(const char *Cmd)
1881 {
1882 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1883 PlotGridXdefault= PlotGridX;
1884 PlotGridYdefault= PlotGridY;
1885 RepaintGraphWindow();
1886 return 0;
1887 }
1888
1889 int CmdHexsamples(const char *Cmd)
1890 {
1891 int i, j;
1892 int requested = 0;
1893 int offset = 0;
1894 char string_buf[25];
1895 char* string_ptr = string_buf;
1896 uint8_t got[BIGBUF_SIZE];
1897
1898 sscanf(Cmd, "%i %i", &requested, &offset);
1899
1900 /* if no args send something */
1901 if (requested == 0) {
1902 requested = 8;
1903 }
1904 if (offset + requested > sizeof(got)) {
1905 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1906 return 0;
1907 }
1908
1909 GetFromBigBuf(got,requested,offset);
1910 WaitForResponse(CMD_ACK,NULL);
1911
1912 i = 0;
1913 for (j = 0; j < requested; j++) {
1914 i++;
1915 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1916 if (i == 8) {
1917 *(string_ptr - 1) = '\0'; // remove the trailing space
1918 PrintAndLog("%s", string_buf);
1919 string_buf[0] = '\0';
1920 string_ptr = string_buf;
1921 i = 0;
1922 }
1923 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1924 *(string_ptr - 1) = '\0';
1925 PrintAndLog("%s", string_buf);
1926 string_buf[0] = '\0';
1927 }
1928 }
1929 return 0;
1930 }
1931
1932 int CmdHide(const char *Cmd)
1933 {
1934 HideGraphWindow();
1935 return 0;
1936 }
1937
1938 //zero mean GraphBuffer
1939 int CmdHpf(const char *Cmd)
1940 {
1941 int i;
1942 int accum = 0;
1943
1944 for (i = 10; i < GraphTraceLen; ++i)
1945 accum += GraphBuffer[i];
1946 accum /= (GraphTraceLen - 10);
1947 for (i = 0; i < GraphTraceLen; ++i)
1948 GraphBuffer[i] -= accum;
1949
1950 RepaintGraphWindow();
1951 return 0;
1952 }
1953
1954 bool _headBit( BitstreamOut *stream)
1955 {
1956 int bytepos = stream->position >> 3; // divide by 8
1957 int bitpos = (stream->position++) & 7; // mask out 00000111
1958 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1959 }
1960
1961 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1962 {
1963 int i;
1964 uint8_t val = 0;
1965 for(i =0 ; i < bits_per_sample; i++)
1966 {
1967 val |= (_headBit(b) << (7-i));
1968 }
1969 return val;
1970 }
1971
1972 int getSamples(const char *Cmd, bool silent)
1973 {
1974 //If we get all but the last byte in bigbuf,
1975 // we don't have to worry about remaining trash
1976 // in the last byte in case the bits-per-sample
1977 // does not line up on byte boundaries
1978
1979 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1980
1981 int n = strtol(Cmd, NULL, 0);
1982
1983 if (n == 0)
1984 n = sizeof(got);
1985
1986 if (n > sizeof(got))
1987 n = sizeof(got);
1988
1989 PrintAndLog("Reading %d bytes from device memory\n", n);
1990 GetFromBigBuf(got,n,0);
1991 PrintAndLog("Data fetched");
1992 UsbCommand response;
1993 WaitForResponse(CMD_ACK, &response);
1994 uint8_t bits_per_sample = 8;
1995
1996 //Old devices without this feature would send 0 at arg[0]
1997 if(response.arg[0] > 0)
1998 {
1999 sample_config *sc = (sample_config *) response.d.asBytes;
2000 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2001 , sc->decimation);
2002 bits_per_sample = sc->bits_per_sample;
2003 }
2004 if(bits_per_sample < 8)
2005 {
2006 PrintAndLog("Unpacking...");
2007 BitstreamOut bout = { got, bits_per_sample * n, 0};
2008 int j =0;
2009 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2010 uint8_t sample = getByte(bits_per_sample, &bout);
2011 GraphBuffer[j] = ((int) sample )- 128;
2012 }
2013 GraphTraceLen = j;
2014 PrintAndLog("Unpacked %d samples" , j );
2015 }else
2016 {
2017 for (int j = 0; j < n; j++) {
2018 GraphBuffer[j] = ((int)got[j]) - 128;
2019 }
2020 GraphTraceLen = n;
2021 }
2022
2023 RepaintGraphWindow();
2024 return 0;
2025 }
2026
2027 int CmdSamples(const char *Cmd)
2028 {
2029 return getSamples(Cmd, false);
2030 }
2031
2032 int CmdTuneSamples(const char *Cmd)
2033 {
2034 int timeout = 0;
2035 printf("\nMeasuring antenna characteristics, please wait...");
2036
2037 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2038 SendCommand(&c);
2039
2040 UsbCommand resp;
2041 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2042 timeout++;
2043 printf(".");
2044 if (timeout > 7) {
2045 PrintAndLog("\nNo response from Proxmark. Aborting...");
2046 return 1;
2047 }
2048 }
2049
2050 int peakv, peakf;
2051 int vLf125, vLf134, vHf;
2052 vLf125 = resp.arg[0] & 0xffff;
2053 vLf134 = resp.arg[0] >> 16;
2054 vHf = resp.arg[1] & 0xffff;;
2055 peakf = resp.arg[2] & 0xffff;
2056 peakv = resp.arg[2] >> 16;
2057 PrintAndLog("");
2058 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2059 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2060 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2061 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2062
2063 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2064 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2065 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2066 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2067
2068 if (peakv < LF_UNUSABLE_V)
2069 PrintAndLog("# Your LF antenna is unusable.");
2070 else if (peakv < LF_MARGINAL_V)
2071 PrintAndLog("# Your LF antenna is marginal.");
2072 if (vHf < HF_UNUSABLE_V)
2073 PrintAndLog("# Your HF antenna is unusable.");
2074 else if (vHf < HF_MARGINAL_V)
2075 PrintAndLog("# Your HF antenna is marginal.");
2076
2077 if (peakv >= LF_UNUSABLE_V) {
2078 for (int i = 0; i < 256; i++) {
2079 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2080 }
2081 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2082 PrintAndLog("\n");
2083 GraphTraceLen = 256;
2084 ShowGraphWindow();
2085 RepaintGraphWindow();
2086 }
2087
2088 return 0;
2089 }
2090
2091
2092 int CmdLoad(const char *Cmd)
2093 {
2094 char filename[FILE_PATH_SIZE] = {0x00};
2095 int len = 0;
2096
2097 len = strlen(Cmd);
2098 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2099 memcpy(filename, Cmd, len);
2100
2101 FILE *f = fopen(filename, "r");
2102 if (!f) {
2103 PrintAndLog("couldn't open '%s'", filename);
2104 return 0;
2105 }
2106
2107 GraphTraceLen = 0;
2108 char line[80];
2109 while (fgets(line, sizeof (line), f)) {
2110 GraphBuffer[GraphTraceLen] = atoi(line);
2111 GraphTraceLen++;
2112 }
2113 fclose(f);
2114 PrintAndLog("loaded %d samples", GraphTraceLen);
2115 RepaintGraphWindow();
2116 return 0;
2117 }
2118
2119 int CmdLtrim(const char *Cmd)
2120 {
2121 int ds = atoi(Cmd);
2122 if (GraphTraceLen<=0) return 0;
2123 for (int i = ds; i < GraphTraceLen; ++i)
2124 GraphBuffer[i-ds] = GraphBuffer[i];
2125 GraphTraceLen -= ds;
2126
2127 RepaintGraphWindow();
2128 return 0;
2129 }
2130
2131 // trim graph to input argument length
2132 int CmdRtrim(const char *Cmd)
2133 {
2134 int ds = atoi(Cmd);
2135
2136 GraphTraceLen = ds;
2137
2138 RepaintGraphWindow();
2139 return 0;
2140 }
2141
2142 int CmdNorm(const char *Cmd)
2143 {
2144 int i;
2145 int max = INT_MIN, min = INT_MAX;
2146
2147 for (i = 10; i < GraphTraceLen; ++i) {
2148 if (GraphBuffer[i] > max)
2149 max = GraphBuffer[i];
2150 if (GraphBuffer[i] < min)
2151 min = GraphBuffer[i];
2152 }
2153
2154 if (max != min) {
2155 for (i = 0; i < GraphTraceLen; ++i) {
2156 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2157 (max - min);
2158 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2159 }
2160 }
2161 RepaintGraphWindow();
2162 return 0;
2163 }
2164
2165 int CmdPlot(const char *Cmd)
2166 {
2167 ShowGraphWindow();
2168 return 0;
2169 }
2170
2171 int CmdSave(const char *Cmd)
2172 {
2173 char filename[FILE_PATH_SIZE] = {0x00};
2174 int len = 0;
2175
2176 len = strlen(Cmd);
2177 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2178 memcpy(filename, Cmd, len);
2179
2180
2181 FILE *f = fopen(filename, "w");
2182 if(!f) {
2183 PrintAndLog("couldn't open '%s'", filename);
2184 return 0;
2185 }
2186 int i;
2187 for (i = 0; i < GraphTraceLen; i++) {
2188 fprintf(f, "%d\n", GraphBuffer[i]);
2189 }
2190 fclose(f);
2191 PrintAndLog("saved to '%s'", Cmd);
2192 return 0;
2193 }
2194
2195 int CmdScale(const char *Cmd)
2196 {
2197 CursorScaleFactor = atoi(Cmd);
2198 if (CursorScaleFactor == 0) {
2199 PrintAndLog("bad, can't have zero scale");
2200 CursorScaleFactor = 1;
2201 }
2202 RepaintGraphWindow();
2203 return 0;
2204 }
2205
2206 int CmdDirectionalThreshold(const char *Cmd)
2207 {
2208 int8_t upThres = param_get8(Cmd, 0);
2209 int8_t downThres = param_get8(Cmd, 1);
2210
2211 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2212
2213 int lastValue = GraphBuffer[0];
2214 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2215
2216 for (int i = 1; i < GraphTraceLen; ++i) {
2217 // Apply first threshold to samples heading up
2218 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2219 {
2220 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2221 GraphBuffer[i] = 1;
2222 }
2223 // Apply second threshold to samples heading down
2224 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2225 {
2226 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2227 GraphBuffer[i] = -1;
2228 }
2229 else
2230 {
2231 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2232 GraphBuffer[i] = GraphBuffer[i-1];
2233
2234 }
2235 }
2236 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2237 RepaintGraphWindow();
2238 return 0;
2239 }
2240
2241 int CmdZerocrossings(const char *Cmd)
2242 {
2243 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2244 CmdHpf("");
2245
2246 int sign = 1;
2247 int zc = 0;
2248 int lastZc = 0;
2249
2250 for (int i = 0; i < GraphTraceLen; ++i) {
2251 if (GraphBuffer[i] * sign >= 0) {
2252 // No change in sign, reproduce the previous sample count.
2253 zc++;
2254 GraphBuffer[i] = lastZc;
2255 } else {
2256 // Change in sign, reset the sample count.
2257 sign = -sign;
2258 GraphBuffer[i] = lastZc;
2259 if (sign > 0) {
2260 lastZc = zc;
2261 zc = 0;
2262 }
2263 }
2264 }
2265
2266 RepaintGraphWindow();
2267 return 0;
2268 }
2269
2270 int usage_data_bin2hex(){
2271 PrintAndLog("Usage: data bin2hex <binary_digits>");
2272 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2273 return 0;
2274 }
2275
2276 /**
2277 * @brief Utility for conversion via cmdline.
2278 * @param Cmd
2279 * @return
2280 */
2281 int Cmdbin2hex(const char *Cmd)
2282 {
2283 int bg =0, en =0;
2284 if(param_getptr(Cmd, &bg, &en, 0))
2285 {
2286 return usage_data_bin2hex();
2287 }
2288 //Number of digits supplied as argument
2289 size_t length = en - bg +1;
2290 size_t bytelen = (length+7) / 8;
2291 uint8_t* arr = (uint8_t *) malloc(bytelen);
2292 memset(arr, 0, bytelen);
2293 BitstreamOut bout = { arr, 0, 0 };
2294
2295 for(; bg <= en ;bg++)
2296 {
2297 char c = Cmd[bg];
2298 if( c == '1') pushBit(&bout, 1);
2299 else if( c == '0') pushBit(&bout, 0);
2300 else PrintAndLog("Ignoring '%c'", c);
2301 }
2302
2303 if(bout.numbits % 8 != 0)
2304 {
2305 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2306 }
2307
2308 //Uses printf instead of PrintAndLog since the latter
2309 // adds linebreaks to each printout - this way was more convenient since we don't have to
2310 // allocate a string and write to that first...
2311 for(size_t x = 0; x < bytelen ; x++)
2312 {
2313 printf("%02X", arr[x]);
2314 }
2315 printf("\n");
2316 free(arr);
2317 return 0;
2318 }
2319
2320 int usage_data_hex2bin(){
2321
2322 PrintAndLog("Usage: data bin2hex <binary_digits>");
2323 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2324 return 0;
2325
2326 }
2327
2328 int Cmdhex2bin(const char *Cmd)
2329 {
2330 int bg =0, en =0;
2331 if(param_getptr(Cmd, &bg, &en, 0))
2332 {
2333 return usage_data_hex2bin();
2334 }
2335
2336
2337 while(bg <= en )
2338 {
2339 char x = Cmd[bg++];
2340 // capitalize
2341 if (x >= 'a' && x <= 'f')
2342 x -= 32;
2343 // convert to numeric value
2344 if (x >= '0' && x <= '9')
2345 x -= '0';
2346 else if (x >= 'A' && x <= 'F')
2347 x -= 'A' - 10;
2348 else
2349 continue;
2350
2351 //Uses printf instead of PrintAndLog since the latter
2352 // adds linebreaks to each printout - this way was more convenient since we don't have to
2353 // allocate a string and write to that first...
2354
2355 for(int i= 0 ; i < 4 ; ++i)
2356 printf("%d",(x >> (3 - i)) & 1);
2357 }
2358 printf("\n");
2359
2360 return 0;
2361 }
2362
2363 static command_t CommandTable[] =
2364 {
2365 {"help", CmdHelp, 1, "This help"},
2366 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
2367 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2368 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2369 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2370 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2371 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2372 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2373 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2374 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2375 {"dec", CmdDec, 1, "Decimate samples"},
2376 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2377 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2378 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2379 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2380 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2381 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2382 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2383 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2384 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2385 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2386 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2387 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2388 {"hide", CmdHide, 1, "Hide graph window"},
2389 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2390 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2391 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2392 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2393 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2394 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2395 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2396 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
2397 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2398 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2399 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2400 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2401 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2402 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2403 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2404 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2405 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2406 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2407 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2408 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2409 {NULL, NULL, 0, NULL}
2410 };
2411
2412 int CmdData(const char *Cmd)
2413 {
2414 CmdsParse(CommandTable, Cmd);
2415 return 0;
2416 }
2417
2418 int CmdHelp(const char *Cmd)
2419 {
2420 CmdsHelp(CommandTable);
2421 return 0;
2422 }
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