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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> l <length>");
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 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
67 return 0;
68 }
69
70 //by marshmellow
71 void printDemodBuff(void)
72 {
73 int bitLen = DemodBufferLen;
74 if (bitLen<1) {
75 PrintAndLog("no bits found in demod buffer");
76 return;
77 }
78 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
79
80 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
81 PrintAndLog("%s",bin);
82
83 return;
84 }
85
86 int CmdPrintDemodBuff(const char *Cmd)
87 {
88 char hex[512]={0x00};
89 bool hexMode = false;
90 bool errors = false;
91 uint32_t offset = 0; //could be size_t but no param_get16...
92 uint32_t length = 512;
93 char cmdp = 0;
94 while(param_getchar(Cmd, cmdp) != 0x00)
95 {
96 switch(param_getchar(Cmd, cmdp))
97 {
98 case 'h':
99 case 'H':
100 return usage_data_printdemodbuf();
101 case 'x':
102 case 'X':
103 hexMode = true;
104 cmdp++;
105 break;
106 case 'o':
107 case 'O':
108 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
109 if (!offset) errors = true;
110 cmdp += 2;
111 break;
112 case 'l':
113 case 'L':
114 length = param_get32ex(Cmd, cmdp+1, 512, 10);
115 if (!length) errors = true;
116 cmdp += 2;
117 break;
118 default:
119 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
120 errors = true;
121 break;
122 }
123 if(errors) break;
124 }
125 //Validations
126 if(errors) return usage_data_printdemodbuf();
127 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
128 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
129
130 if (hexMode){
131 char *buf = (char *) (DemodBuffer + offset);
132 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
133 numBits = binarraytohex(hex, buf, numBits);
134 if (numBits==0) return 0;
135 PrintAndLog("DemodBuffer: %s",hex);
136 } else {
137 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
138 }
139 return 1;
140 }
141
142 //by marshmellow
143 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
144 int CmdGetBitStream(const char *Cmd)
145 {
146 int i;
147 CmdHpf(Cmd);
148 for (i = 0; i < GraphTraceLen; i++) {
149 if (GraphBuffer[i] >= 1) {
150 GraphBuffer[i] = 1;
151 } else {
152 GraphBuffer[i] = 0;
153 }
154 }
155 RepaintGraphWindow();
156 return 0;
157 }
158
159 //by marshmellow
160 //print 64 bit EM410x ID in multiple formats
161 void printEM410x(uint32_t hi, uint64_t id)
162 {
163 if (id || hi){
164 uint64_t iii=1;
165 uint64_t id2lo=0;
166 uint32_t ii=0;
167 uint32_t i=0;
168 for (ii=5; ii>0;ii--){
169 for (i=0;i<8;i++){
170 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
171 }
172 }
173 if (hi){
174 //output 88 bit em id
175 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
176 } else{
177 //output 40 bit em id
178 PrintAndLog("\nEM TAG ID : %010llX", id);
179 PrintAndLog("Unique TAG ID : %010llX", id2lo);
180 PrintAndLog("\nPossible de-scramble patterns");
181 PrintAndLog("HoneyWell IdentKey {");
182 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
183 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
184 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
185 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
186 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
187 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
188 PrintAndLog("DEZ 14/IK2 : %014lld",id);
189 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
190 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
191 (id2lo & 0xf000000000) >> 36,
192 (id2lo & 0x0f00000000) >> 32,
193 (id2lo & 0x00f0000000) >> 28,
194 (id2lo & 0x000f000000) >> 24,
195 (id2lo & 0x0000f00000) >> 20,
196 (id2lo & 0x00000f0000) >> 16,
197 (id2lo & 0x000000f000) >> 12,
198 (id2lo & 0x0000000f00) >> 8,
199 (id2lo & 0x00000000f0) >> 4,
200 (id2lo & 0x000000000f)
201 );
202 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
203 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
204 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
205
206 uint32_t p1id = (id & 0xFFFFFF);
207 uint8_t arr[32] = {0x00};
208 int i =0;
209 int j = 23;
210 for (; i < 24; ++i, --j ){
211 arr[i] = (p1id >> i) & 1;
212 }
213
214 uint32_t p1 = 0;
215
216 p1 |= arr[23] << 21;
217 p1 |= arr[22] << 23;
218 p1 |= arr[21] << 20;
219 p1 |= arr[20] << 22;
220
221 p1 |= arr[19] << 18;
222 p1 |= arr[18] << 16;
223 p1 |= arr[17] << 19;
224 p1 |= arr[16] << 17;
225
226 p1 |= arr[15] << 13;
227 p1 |= arr[14] << 15;
228 p1 |= arr[13] << 12;
229 p1 |= arr[12] << 14;
230
231 p1 |= arr[11] << 6;
232 p1 |= arr[10] << 2;
233 p1 |= arr[9] << 7;
234 p1 |= arr[8] << 1;
235
236 p1 |= arr[7] << 0;
237 p1 |= arr[6] << 8;
238 p1 |= arr[5] << 11;
239 p1 |= arr[4] << 3;
240
241 p1 |= arr[3] << 10;
242 p1 |= arr[2] << 4;
243 p1 |= arr[1] << 5;
244 p1 |= arr[0] << 9;
245 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
246
247 uint16_t sebury1 = id & 0xFFFF;
248 uint8_t sebury2 = (id >> 16) & 0x7F;
249 uint32_t sebury3 = id & 0x7FFFFF;
250 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
251 }
252 }
253 return;
254 }
255
256 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
257 {
258 size_t idx = 0;
259 size_t BitLen = DemodBufferLen;
260 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
261 memcpy(BitStream, DemodBuffer, BitLen);
262 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
263 //set GraphBuffer for clone or sim command
264 setDemodBuf(BitStream, BitLen, idx);
265 if (g_debugMode){
266 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
267 printDemodBuff();
268 }
269 if (verbose){
270 PrintAndLog("EM410x pattern found: ");
271 printEM410x(*hi, *lo);
272 }
273 return 1;
274 }
275 return 0;
276 }
277
278 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
279 {
280 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
281 return AskEm410xDecode(verbose, hi, lo);
282 }
283
284 //by marshmellow
285 //takes 3 arguments - clock, invert and maxErr as integers
286 //attempts to demodulate ask while decoding manchester
287 //prints binary found and saves in graphbuffer for further commands
288 int CmdAskEM410xDemod(const char *Cmd)
289 {
290 char cmdp = param_getchar(Cmd, 0);
291 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
292 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
293 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
294 PrintAndLog(" <invert>, 1 for invert output");
295 PrintAndLog(" [set maximum allowed errors], default = 100.");
296 PrintAndLog("");
297 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
298 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
299 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
300 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
301 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");
302 return 0;
303 }
304 uint64_t lo = 0;
305 uint32_t hi = 0;
306 return AskEm410xDemod(Cmd, &hi, &lo, true);
307 }
308
309 //by marshmellow
310 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
311 // (amp may not be needed anymore)
312 //verbose will print results and demoding messages
313 //emSearch will auto search for EM410x format in bitstream
314 //askType switches decode: ask/raw = 0, ask/manchester = 1
315 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
316 {
317 int invert=0;
318 int clk=0;
319 int maxErr=100;
320 int maxLen=0;
321 uint8_t askAmp = 0;
322 char amp = param_getchar(Cmd, 0);
323 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
324 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
325 if (!maxLen) maxLen = BIGBUF_SIZE;
326 if (invert != 0 && invert != 1) {
327 PrintAndLog("Invalid argument: %s", Cmd);
328 return 0;
329 }
330 if (clk==1){
331 invert=1;
332 clk=0;
333 }
334 if (amp == 'a' || amp == 'A') askAmp=1;
335 size_t BitLen = getFromGraphBuf(BitStream);
336 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
337 if (BitLen<255) return 0;
338 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
339
340 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
341 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
342 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
343 return 0;
344 }
345 if (errCnt>maxErr){
346 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
347 return 0;
348 }
349 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
350
351 //output
352 setDemodBuf(BitStream,BitLen,0);
353 if (verbose || g_debugMode){
354 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
355 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
356 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
357 // Now output the bitstream to the scrollback by line of 16 bits
358 printDemodBuff();
359
360 }
361 uint64_t lo = 0;
362 uint32_t hi = 0;
363 if (emSearch){
364 AskEm410xDecode(true, &hi, &lo);
365 }
366 return 1;
367 }
368
369 //by marshmellow
370 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
371 //attempts to demodulate ask while decoding manchester
372 //prints binary found and saves in graphbuffer for further commands
373 int Cmdaskmandemod(const char *Cmd)
374 {
375 char cmdp = param_getchar(Cmd, 0);
376 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
377 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
378 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
379 PrintAndLog(" <invert>, 1 to invert output");
380 PrintAndLog(" [set maximum allowed errors], default = 100");
381 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
382 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
383 PrintAndLog("");
384 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
385 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
386 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
387 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
388 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");
389 return 0;
390 }
391 return ASKDemod(Cmd, TRUE, TRUE, 1);
392 }
393
394 //by marshmellow
395 //manchester decode
396 //stricktly take 10 and 01 and convert to 0 and 1
397 int Cmdmandecoderaw(const char *Cmd)
398 {
399 int i =0;
400 int errCnt=0;
401 size_t size=0;
402 int invert=0;
403 int maxErr = 20;
404 char cmdp = param_getchar(Cmd, 0);
405 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
406 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
407 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
408 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
409 PrintAndLog(" [invert] invert output");
410 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
411 PrintAndLog("");
412 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
413 return 0;
414 }
415 if (DemodBufferLen==0) return 0;
416 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
417 int high=0,low=0;
418 for (;i<DemodBufferLen;++i){
419 if (DemodBuffer[i]>high) high=DemodBuffer[i];
420 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
421 BitStream[i]=DemodBuffer[i];
422 }
423 if (high>7 || low <0 ){
424 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
425 return 0;
426 }
427
428 sscanf(Cmd, "%i %i", &invert, &maxErr);
429 size=i;
430 errCnt=manrawdecode(BitStream, &size, invert);
431 if (errCnt>=maxErr){
432 PrintAndLog("Too many errors: %d",errCnt);
433 return 0;
434 }
435 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
436 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
437 if (errCnt==0){
438 uint64_t id = 0;
439 uint32_t hi = 0;
440 size_t idx=0;
441 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
442 //need to adjust to set bitstream back to manchester encoded data
443 //setDemodBuf(BitStream, size, idx);
444
445 printEM410x(hi, id);
446 }
447 }
448 return 1;
449 }
450
451 //by marshmellow
452 //biphase decode
453 //take 01 or 10 = 0 and 11 or 00 = 1
454 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
455 // and "invert" default = 0 if 1 it will invert output
456 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
457 int CmdBiphaseDecodeRaw(const char *Cmd)
458 {
459 size_t size=0;
460 int offset=0, invert=0, maxErr=20, errCnt=0;
461 char cmdp = param_getchar(Cmd, 0);
462 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
463 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
464 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
465 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
466 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
467 PrintAndLog("");
468 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
469 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
470 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
471 PrintAndLog("");
472 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
473 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
474 return 0;
475 }
476 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
477 if (DemodBufferLen==0){
478 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
479 return 0;
480 }
481 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
482 memcpy(BitStream, DemodBuffer, DemodBufferLen);
483 size = DemodBufferLen;
484 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
485 if (errCnt<0){
486 PrintAndLog("Error during decode:%d", errCnt);
487 return 0;
488 }
489 if (errCnt>maxErr){
490 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
491 return 0;
492 }
493
494 if (errCnt>0){
495 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
496 }
497 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
498 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
499
500 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
501 return 1;
502 }
503
504 //by marshmellow
505 // - ASK Demod then Biphase decode GraphBuffer samples
506 int ASKbiphaseDemod(const char *Cmd, bool verbose)
507 {
508 //ask raw demod GraphBuffer first
509 int offset=0, clk=0, invert=0, maxErr=0;
510 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
511
512 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
513 size_t size = getFromGraphBuf(BitStream);
514 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
515 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
516 if ( errCnt < 0 || errCnt > maxErr ) {
517 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
518 return 0;
519 }
520
521 //attempt to Biphase decode BitStream
522 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
523 if (errCnt < 0){
524 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
525 return 0;
526 }
527 if (errCnt > maxErr) {
528 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
529 return 0;
530 }
531 //success set DemodBuffer and return
532 setDemodBuf(BitStream, size, 0);
533 if (g_debugMode || verbose){
534 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
535 printDemodBuff();
536 }
537 return 1;
538 }
539 //by marshmellow - see ASKbiphaseDemod
540 int Cmdaskbiphdemod(const char *Cmd)
541 {
542 char cmdp = param_getchar(Cmd, 0);
543 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
544 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
545 PrintAndLog(" [offset], offset to begin biphase, default=0");
546 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
547 PrintAndLog(" <invert>, 1 to invert output");
548 PrintAndLog(" [set maximum allowed errors], default = 100");
549 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
550 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
551 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
552 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
553 PrintAndLog(" NOTE: any other arg must have previous args set to work");
554 PrintAndLog("");
555 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
556 PrintAndLog("");
557 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
558 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
559 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
560 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
561 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
562 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");
563 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");
564 return 0;
565 }
566 return ASKbiphaseDemod(Cmd, TRUE);
567 }
568
569 //by marshmellow
570 //attempts to demodulate and identify a G_Prox_II verex/chubb card
571 //WARNING: if it fails during some points it will destroy the DemodBuffer data
572 // but will leave the GraphBuffer intact.
573 //if successful it will push askraw data back to demod buffer ready for emulation
574 int CmdG_Prox_II_Demod(const char *Cmd)
575 {
576 if (!ASKbiphaseDemod(Cmd, FALSE)){
577 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
578 return 0;
579 }
580 size_t size = DemodBufferLen;
581 //call lfdemod.c demod for gProxII
582 int ans = gProxII_Demod(DemodBuffer, &size);
583 if (ans < 0){
584 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
585 return 0;
586 }
587 //got a good demod
588 uint32_t ByteStream[65] = {0x00};
589 uint8_t xorKey=0;
590 uint8_t keyCnt=0;
591 uint8_t bitCnt=0;
592 uint8_t ByteCnt=0;
593 size_t startIdx = ans + 6; //start after preamble
594 for (size_t idx = 0; idx<size-6; idx++){
595 if ((idx+1) % 5 == 0){
596 //spacer bit - should be 0
597 if (DemodBuffer[startIdx+idx] != 0) {
598 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
599 return 0;
600 }
601 continue;
602 }
603 if (keyCnt<8){ //lsb first
604 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
605 keyCnt++;
606 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
607 continue;
608 }
609 //lsb first
610 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
611 bitCnt++;
612 if (bitCnt % 8 == 0){
613 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
614 bitCnt=0;
615 ByteCnt++;
616 }
617 }
618 for (uint8_t i = 0; i < ByteCnt; i++){
619 ByteStream[i] ^= xorKey; //xor
620 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
621 }
622 //now ByteStream contains 64 bytes of decrypted raw tag data
623 //
624 uint8_t fmtLen = ByteStream[0]>>2;
625 uint32_t FC = 0;
626 uint32_t Card = 0;
627 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
628 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
629 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
630
631 if (fmtLen==36){
632 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
633 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
634 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
635 } else if(fmtLen==26){
636 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
637 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
638 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
639 } else {
640 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
641 }
642 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
643 setDemodBuf(DemodBuffer+ans, 96, 0);
644 return 1;
645 }
646
647 //by marshmellow
648 //see ASKDemod for what args are accepted
649 int CmdVikingDemod(const char *Cmd)
650 {
651 if (!ASKDemod(Cmd, false, false, 1)) {
652 if (g_debugMode) PrintAndLog("ASKDemod failed");
653 return 0;
654 }
655 size_t size = DemodBufferLen;
656 //call lfdemod.c demod for Viking
657 int ans = VikingDemod_AM(DemodBuffer, &size);
658 if (ans < 0) {
659 if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
660 return 0;
661 }
662 //got a good demod
663 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
664 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
665 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
666 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
667 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
668 PrintAndLog("Raw: %08X%08X", raw1,raw2);
669 setDemodBuf(DemodBuffer+ans, 64, 0);
670 return 1;
671 }
672
673 //by marshmellow - see ASKDemod
674 int Cmdaskrawdemod(const char *Cmd)
675 {
676 char cmdp = param_getchar(Cmd, 0);
677 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
678 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
679 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
680 PrintAndLog(" <invert>, 1 to invert output");
681 PrintAndLog(" [set maximum allowed errors], default = 100");
682 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
683 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
684 PrintAndLog("");
685 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
686 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
687 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
688 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
689 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
690 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");
691 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");
692 return 0;
693 }
694 return ASKDemod(Cmd, TRUE, FALSE, 0);
695 }
696
697 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
698 {
699 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
700 size_t Correlation = 0;
701 int maxSum = 0;
702 int lastMax = 0;
703 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
704 for (int i = 0; i < GraphTraceLen - window; ++i) {
705 int sum = 0;
706 for (int j = 0; j < window; ++j) {
707 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
708 }
709 CorrelBuffer[i] = sum;
710 if (sum >= maxSum-100 && sum <= maxSum+100){
711 //another max
712 Correlation = i-lastMax;
713 lastMax = i;
714 if (sum > maxSum) maxSum = sum;
715 } else if (sum > maxSum){
716 maxSum=sum;
717 lastMax = i;
718 }
719 }
720 if (Correlation==0){
721 //try again with wider margin
722 for (int i = 0; i < GraphTraceLen - window; i++){
723 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
724 //another max
725 Correlation = i-lastMax;
726 lastMax = i;
727 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
728 }
729 }
730 }
731 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
732
733 if (SaveGrph){
734 GraphTraceLen = GraphTraceLen - window;
735 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
736 RepaintGraphWindow();
737 }
738 return Correlation;
739 }
740
741 int usage_data_autocorr(void)
742 {
743 //print help
744 PrintAndLog("Usage: data autocorr [window] [g]");
745 PrintAndLog("Options: ");
746 PrintAndLog(" h This help");
747 PrintAndLog(" [window] window length for correlation - default = 4000");
748 PrintAndLog(" g save back to GraphBuffer (overwrite)");
749 return 0;
750 }
751
752 int CmdAutoCorr(const char *Cmd)
753 {
754 char cmdp = param_getchar(Cmd, 0);
755 if (cmdp == 'h' || cmdp == 'H')
756 return usage_data_autocorr();
757 int window = 4000; //set default
758 char grph=0;
759 bool updateGrph = FALSE;
760 sscanf(Cmd, "%i %c", &window, &grph);
761
762 if (window >= GraphTraceLen) {
763 PrintAndLog("window must be smaller than trace (%d samples)",
764 GraphTraceLen);
765 return 0;
766 }
767 if (grph == 'g') updateGrph=TRUE;
768 return AutoCorrelate(window, updateGrph, TRUE);
769 }
770
771 int CmdBitsamples(const char *Cmd)
772 {
773 int cnt = 0;
774 uint8_t got[12288];
775
776 GetFromBigBuf(got,sizeof(got),0);
777 WaitForResponse(CMD_ACK,NULL);
778
779 for (int j = 0; j < sizeof(got); j++) {
780 for (int k = 0; k < 8; k++) {
781 if(got[j] & (1 << (7 - k))) {
782 GraphBuffer[cnt++] = 1;
783 } else {
784 GraphBuffer[cnt++] = 0;
785 }
786 }
787 }
788 GraphTraceLen = cnt;
789 RepaintGraphWindow();
790 return 0;
791 }
792
793 int CmdBuffClear(const char *Cmd)
794 {
795 UsbCommand c = {CMD_BUFF_CLEAR};
796 SendCommand(&c);
797 ClearGraph(true);
798 return 0;
799 }
800
801 int CmdDec(const char *Cmd)
802 {
803 for (int i = 0; i < (GraphTraceLen / 2); ++i)
804 GraphBuffer[i] = GraphBuffer[i * 2];
805 GraphTraceLen /= 2;
806 PrintAndLog("decimated by 2");
807 RepaintGraphWindow();
808 return 0;
809 }
810 /**
811 * Undecimate - I'd call it 'interpolate', but we'll save that
812 * name until someone does an actual interpolation command, not just
813 * blindly repeating samples
814 * @param Cmd
815 * @return
816 */
817 int CmdUndec(const char *Cmd)
818 {
819 if(param_getchar(Cmd, 0) == 'h')
820 {
821 PrintAndLog("Usage: data undec [factor]");
822 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
823 PrintAndLog("Options: ");
824 PrintAndLog(" h This help");
825 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
826 PrintAndLog("Example: 'data undec 3'");
827 return 0;
828 }
829
830 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
831 //We have memory, don't we?
832 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
833 uint32_t g_index = 0 ,s_index = 0;
834 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
835 {
836 int count = 0;
837 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
838 swap[s_index+count] = GraphBuffer[g_index];
839 s_index+=count;
840 }
841
842 memcpy(GraphBuffer,swap, s_index * sizeof(int));
843 GraphTraceLen = s_index;
844 RepaintGraphWindow();
845 return 0;
846 }
847
848 //by marshmellow
849 //shift graph zero up or down based on input + or -
850 int CmdGraphShiftZero(const char *Cmd)
851 {
852
853 int shift=0;
854 //set options from parameters entered with the command
855 sscanf(Cmd, "%i", &shift);
856 int shiftedVal=0;
857 for(int i = 0; i<GraphTraceLen; i++){
858 shiftedVal=GraphBuffer[i]+shift;
859 if (shiftedVal>127)
860 shiftedVal=127;
861 else if (shiftedVal<-127)
862 shiftedVal=-127;
863 GraphBuffer[i]= shiftedVal;
864 }
865 CmdNorm("");
866 return 0;
867 }
868
869 //by marshmellow
870 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
871 //similar to dirtheshold, threshold commands
872 //takes a threshold length which is the measured length between two samples then determines an edge
873 int CmdAskEdgeDetect(const char *Cmd)
874 {
875 int thresLen = 25;
876 sscanf(Cmd, "%i", &thresLen);
877
878 for(int i = 1; i<GraphTraceLen; i++){
879 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
880 GraphBuffer[i-1] = 127;
881 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
882 GraphBuffer[i-1] = -127;
883 }
884 RepaintGraphWindow();
885 return 0;
886 }
887
888 /* Print our clock rate */
889 // uses data from graphbuffer
890 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
891 int CmdDetectClockRate(const char *Cmd)
892 {
893 char cmdp = param_getchar(Cmd, 0);
894 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
895 PrintAndLog("Usage: data detectclock [modulation] <clock>");
896 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
897 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
898 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
899 PrintAndLog("");
900 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
901 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
902 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
903 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
904 }
905 int ans=0;
906 if (cmdp == 'a'){
907 ans = GetAskClock(Cmd+1, true, false);
908 } else if (cmdp == 'f'){
909 ans = GetFskClock("", true, false);
910 } else if (cmdp == 'n'){
911 ans = GetNrzClock("", true, false);
912 } else if (cmdp == 'p'){
913 ans = GetPskClock("", true, false);
914 } else {
915 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
916 }
917 return ans;
918 }
919
920 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
921 {
922 static char fType[8];
923 memset(fType, 0x00, 8);
924 char *fskType = fType;
925 if (fchigh==10 && fclow==8){
926 if (invert) //fsk2a
927 memcpy(fskType, "FSK2a", 5);
928 else //fsk2
929 memcpy(fskType, "FSK2", 4);
930 } else if (fchigh == 8 && fclow == 5) {
931 if (invert)
932 memcpy(fskType, "FSK1", 4);
933 else
934 memcpy(fskType, "FSK1a", 5);
935 } else {
936 memcpy(fskType, "FSK??", 5);
937 }
938 return fskType;
939 }
940
941 //by marshmellow
942 //fsk raw demod and print binary
943 //takes 4 arguments - Clock, invert, fchigh, fclow
944 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
945 int FSKrawDemod(const char *Cmd, bool verbose)
946 {
947 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
948 uint8_t rfLen, invert, fchigh, fclow;
949 //set defaults
950 //set options from parameters entered with the command
951 rfLen = param_get8(Cmd, 0);
952 invert = param_get8(Cmd, 1);
953 fchigh = param_get8(Cmd, 2);
954 fclow = param_get8(Cmd, 3);
955 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
956 if (rfLen==1) {
957 invert = 1; //if invert option only is used
958 rfLen = 0;
959 }
960 }
961 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
962 size_t BitLen = getFromGraphBuf(BitStream);
963 if (BitLen==0) return 0;
964 if (g_debugMode==2) PrintAndLog("DEBUG: Got samples");
965 //get field clock lengths
966 uint16_t fcs=0;
967 if (!fchigh || !fclow) {
968 fcs = countFC(BitStream, BitLen, 1);
969 if (!fcs) {
970 fchigh = 10;
971 fclow = 8;
972 } else {
973 fchigh = (fcs >> 8) & 0x00FF;
974 fclow = fcs & 0x00FF;
975 }
976 }
977 //get bit clock length
978 if (!rfLen) {
979 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
980 if (!rfLen) rfLen = 50;
981 }
982 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
983 if (size > 0) {
984 setDemodBuf(BitStream,size,0);
985
986 // Now output the bitstream to the scrollback by line of 16 bits
987 if (verbose || g_debugMode) {
988 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
989 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
990 printDemodBuff();
991 }
992 return 1;
993 } else {
994 if (g_debugMode) PrintAndLog("no FSK data found");
995 }
996 return 0;
997 }
998
999 //by marshmellow
1000 //fsk raw demod and print binary
1001 //takes 4 arguments - Clock, invert, fchigh, fclow
1002 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1003 int CmdFSKrawdemod(const char *Cmd)
1004 {
1005 char cmdp = param_getchar(Cmd, 0);
1006 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1007 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1008 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1009 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1010 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1011 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1012 PrintAndLog("");
1013 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1014 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1015 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1016 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1017 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1018 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1019 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1020 return 0;
1021 }
1022 return FSKrawDemod(Cmd, TRUE);
1023 }
1024
1025 //by marshmellow (based on existing demod + holiman's refactor)
1026 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1027 //print full HID Prox ID and some bit format details if found
1028 int CmdFSKdemodHID(const char *Cmd)
1029 {
1030 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1031 uint32_t hi2=0, hi=0, lo=0;
1032
1033 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1034 size_t BitLen = getFromGraphBuf(BitStream);
1035 if (BitLen==0) return 0;
1036 //get binary from fsk wave
1037 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1038 if (idx<0){
1039 if (g_debugMode){
1040 if (idx==-1){
1041 PrintAndLog("DEBUG: Just Noise Detected");
1042 } else if (idx == -2) {
1043 PrintAndLog("DEBUG: Error demoding fsk");
1044 } else if (idx == -3) {
1045 PrintAndLog("DEBUG: Preamble not found");
1046 } else if (idx == -4) {
1047 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1048 } else {
1049 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1050 }
1051 }
1052 return 0;
1053 }
1054 if (hi2==0 && hi==0 && lo==0) {
1055 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1056 return 0;
1057 }
1058 if (hi2 != 0){ //extra large HID tags
1059 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1060 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1061 }
1062 else { //standard HID tags <38 bits
1063 uint8_t fmtLen = 0;
1064 uint32_t fc = 0;
1065 uint32_t cardnum = 0;
1066 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1067 uint32_t lo2=0;
1068 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1069 uint8_t idx3 = 1;
1070 while(lo2>1){ //find last bit set to 1 (format len bit)
1071 lo2=lo2>>1;
1072 idx3++;
1073 }
1074 fmtLen =idx3+19;
1075 fc =0;
1076 cardnum=0;
1077 if(fmtLen==26){
1078 cardnum = (lo>>1)&0xFFFF;
1079 fc = (lo>>17)&0xFF;
1080 }
1081 if(fmtLen==34){
1082 cardnum = (lo>>1)&0xFFFF;
1083 fc= ((hi&1)<<15)|(lo>>17);
1084 }
1085 if(fmtLen==35){
1086 cardnum = (lo>>1)&0xFFFFF;
1087 fc = ((hi&1)<<11)|(lo>>21);
1088 }
1089 }
1090 else { //if bit 38 is not set then 37 bit format is used
1091 fmtLen = 37;
1092 fc = 0;
1093 cardnum = 0;
1094 if(fmtLen == 37){
1095 cardnum = (lo>>1)&0x7FFFF;
1096 fc = ((hi&0xF)<<12)|(lo>>20);
1097 }
1098 }
1099 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1100 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1101 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1102 }
1103 setDemodBuf(BitStream,BitLen,idx);
1104 if (g_debugMode){
1105 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1106 printDemodBuff();
1107 }
1108 return 1;
1109 }
1110
1111 //by marshmellow
1112 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1113 //print full Paradox Prox ID and some bit format details if found
1114 int CmdFSKdemodParadox(const char *Cmd)
1115 {
1116 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1117 uint32_t hi2=0, hi=0, lo=0;
1118
1119 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1120 size_t BitLen = getFromGraphBuf(BitStream);
1121 if (BitLen==0) return 0;
1122 //get binary from fsk wave
1123 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1124 if (idx<0){
1125 if (g_debugMode){
1126 if (idx==-1){
1127 PrintAndLog("DEBUG: Just Noise Detected");
1128 } else if (idx == -2) {
1129 PrintAndLog("DEBUG: Error demoding fsk");
1130 } else if (idx == -3) {
1131 PrintAndLog("DEBUG: Preamble not found");
1132 } else if (idx == -4) {
1133 PrintAndLog("DEBUG: Error in Manchester data");
1134 } else {
1135 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1136 }
1137 }
1138 return 0;
1139 }
1140 if (hi2==0 && hi==0 && lo==0){
1141 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1142 return 0;
1143 }
1144 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1145 uint32_t cardnum = (lo>>10)&0xFFFF;
1146 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1147 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1148 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1149
1150 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1151 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1152 setDemodBuf(BitStream,BitLen,idx);
1153 if (g_debugMode){
1154 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1155 printDemodBuff();
1156 }
1157 return 1;
1158 }
1159
1160 //by marshmellow
1161 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1162 //print ioprox ID and some format details
1163 int CmdFSKdemodIO(const char *Cmd)
1164 {
1165 int idx=0;
1166 //something in graphbuffer?
1167 if (GraphTraceLen < 65) {
1168 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1169 return 0;
1170 }
1171 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1172 size_t BitLen = getFromGraphBuf(BitStream);
1173 if (BitLen==0) return 0;
1174
1175 //get binary from fsk wave
1176 idx = IOdemodFSK(BitStream,BitLen);
1177 if (idx<0){
1178 if (g_debugMode){
1179 if (idx==-1){
1180 PrintAndLog("DEBUG: Just Noise Detected");
1181 } else if (idx == -2) {
1182 PrintAndLog("DEBUG: not enough samples");
1183 } else if (idx == -3) {
1184 PrintAndLog("DEBUG: error during fskdemod");
1185 } else if (idx == -4) {
1186 PrintAndLog("DEBUG: Preamble not found");
1187 } else if (idx == -5) {
1188 PrintAndLog("DEBUG: Separator bits not found");
1189 } else {
1190 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1191 }
1192 }
1193 return 0;
1194 }
1195 if (idx==0){
1196 if (g_debugMode){
1197 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1198 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1199 }
1200 return 0;
1201 }
1202 //Index map
1203 //0 10 20 30 40 50 60
1204 //| | | | | | |
1205 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1206 //-----------------------------------------------------------------------------
1207 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1208 //
1209 //XSF(version)facility:codeone+codetwo (raw)
1210 //Handle the data
1211 if (idx+64>BitLen) {
1212 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1213 return 0;
1214 }
1215 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]);
1216 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]);
1217 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]);
1218 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]);
1219 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]);
1220 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]);
1221 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]);
1222
1223 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1224 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1225 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1226 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1227 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1228 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1229 uint16_t calccrc = 0;
1230
1231 for (uint8_t i=1; i<6; ++i){
1232 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1233 }
1234 calccrc &= 0xff;
1235 calccrc = 0xff - calccrc;
1236
1237 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1238
1239 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1240 setDemodBuf(BitStream,64,idx);
1241 if (g_debugMode){
1242 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1243 printDemodBuff();
1244 }
1245 return 1;
1246 }
1247
1248 //by marshmellow
1249 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1250 //print full AWID Prox ID and some bit format details if found
1251 int CmdFSKdemodAWID(const char *Cmd)
1252 {
1253 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1254 size_t size = getFromGraphBuf(BitStream);
1255 if (size==0) return 0;
1256
1257 //get binary from fsk wave
1258 int idx = AWIDdemodFSK(BitStream, &size);
1259 if (idx<=0){
1260 if (g_debugMode==1){
1261 if (idx == -1)
1262 PrintAndLog("DEBUG: Error - not enough samples");
1263 else if (idx == -2)
1264 PrintAndLog("DEBUG: Error - only noise found");
1265 else if (idx == -3)
1266 PrintAndLog("DEBUG: Error - problem during FSK demod");
1267 else if (idx == -4)
1268 PrintAndLog("DEBUG: Error - AWID preamble not found");
1269 else if (idx == -5)
1270 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1271 else
1272 PrintAndLog("DEBUG: Error %d",idx);
1273 }
1274 return 0;
1275 }
1276
1277 // Index map
1278 // 0 10 20 30 40 50 60
1279 // | | | | | | |
1280 // 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
1281 // -----------------------------------------------------------------------------
1282 // 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
1283 // 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
1284 // |---26 bit---| |-----117----||-------------142-------------|
1285 // b = format bit len, o = odd parity of last 3 bits
1286 // f = facility code, c = card number
1287 // w = wiegand parity
1288 // (26 bit format shown)
1289
1290 //get raw ID before removing parities
1291 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1292 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1293 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1294 setDemodBuf(BitStream,96,idx);
1295
1296 size = removeParity(BitStream, idx+8, 4, 1, 88);
1297 if (size != 66){
1298 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1299 return 0;
1300 }
1301 // ok valid card found!
1302
1303 // Index map
1304 // 0 10 20 30 40 50 60
1305 // | | | | | | |
1306 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1307 // -----------------------------------------------------------------------------
1308 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1309 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1310 // |26 bit| |-117--| |-----142------|
1311 // b = format bit len, o = odd parity of last 3 bits
1312 // f = facility code, c = card number
1313 // w = wiegand parity
1314 // (26 bit format shown)
1315
1316 uint32_t fc = 0;
1317 uint32_t cardnum = 0;
1318 uint32_t code1 = 0;
1319 uint32_t code2 = 0;
1320 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1321 if (fmtLen==26){
1322 fc = bytebits_to_byte(BitStream+9, 8);
1323 cardnum = bytebits_to_byte(BitStream+17, 16);
1324 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1325 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1326 } else {
1327 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1328 if (fmtLen>32){
1329 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1330 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1331 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1332 } else{
1333 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1334 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1335 }
1336 }
1337 if (g_debugMode){
1338 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1339 printDemodBuff();
1340 }
1341 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1342 return 1;
1343 }
1344
1345 //by marshmellow
1346 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1347 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1348 int CmdFSKdemodPyramid(const char *Cmd)
1349 {
1350 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1351 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1352 size_t size = getFromGraphBuf(BitStream);
1353 if (size==0) return 0;
1354
1355 //get binary from fsk wave
1356 int idx = PyramiddemodFSK(BitStream, &size);
1357 if (idx < 0){
1358 if (g_debugMode==1){
1359 if (idx == -5)
1360 PrintAndLog("DEBUG: Error - not enough samples");
1361 else if (idx == -1)
1362 PrintAndLog("DEBUG: Error - only noise found");
1363 else if (idx == -2)
1364 PrintAndLog("DEBUG: Error - problem during FSK demod");
1365 else if (idx == -3)
1366 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1367 else if (idx == -4)
1368 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1369 else
1370 PrintAndLog("DEBUG: Error - idx: %d",idx);
1371 }
1372 return 0;
1373 }
1374 // Index map
1375 // 0 10 20 30 40 50 60
1376 // | | | | | | |
1377 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1378 // -----------------------------------------------------------------------------
1379 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1380 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1381
1382 // 64 70 80 90 100 110 120
1383 // | | | | | | |
1384 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1385 // -----------------------------------------------------------------------------
1386 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1387 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1388 // |---115---||---------71---------|
1389 // s = format start bit, o = odd parity of last 7 bits
1390 // f = facility code, c = card number
1391 // w = wiegand parity, x = extra space for other formats
1392 // p = unknown checksum
1393 // (26 bit format shown)
1394
1395 //get bytes for checksum calc
1396 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1397 uint8_t csBuff[14] = {0x00};
1398 for (uint8_t i = 0; i < 13; i++){
1399 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1400 }
1401 //check checksum calc
1402 //checksum calc thanks to ICEMAN!!
1403 uint32_t checkCS = CRC8Maxim(csBuff,13);
1404
1405 //get raw ID before removing parities
1406 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1407 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1408 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1409 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1410 setDemodBuf(BitStream,128,idx);
1411
1412 size = removeParity(BitStream, idx+8, 8, 1, 120);
1413 if (size != 105){
1414 if (g_debugMode==1)
1415 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1416 return 0;
1417 }
1418
1419 // ok valid card found!
1420
1421 // Index map
1422 // 0 10 20 30 40 50 60 70
1423 // | | | | | | | |
1424 // 01234567890123456789012345678901234567890123456789012345678901234567890
1425 // -----------------------------------------------------------------------
1426 // 00000000000000000000000000000000000000000000000000000000000000000000000
1427 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1428
1429 // 71 80 90 100
1430 // | | | |
1431 // 1 2 34567890 1234567890123456 7 8901234
1432 // ---------------------------------------
1433 // 1 1 01110011 0000000001000110 0 1001010
1434 // s w ffffffff cccccccccccccccc w ppppppp
1435 // |--115-| |------71------|
1436 // s = format start bit, o = odd parity of last 7 bits
1437 // f = facility code, c = card number
1438 // w = wiegand parity, x = extra space for other formats
1439 // p = unknown checksum
1440 // (26 bit format shown)
1441
1442 //find start bit to get fmtLen
1443 int j;
1444 for (j=0; j<size; j++){
1445 if(BitStream[j]) break;
1446 }
1447 uint8_t fmtLen = size-j-8;
1448 uint32_t fc = 0;
1449 uint32_t cardnum = 0;
1450 uint32_t code1 = 0;
1451 if (fmtLen==26){
1452 fc = bytebits_to_byte(BitStream+73, 8);
1453 cardnum = bytebits_to_byte(BitStream+81, 16);
1454 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1455 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);
1456 } else if (fmtLen==45){
1457 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1458 fc = bytebits_to_byte(BitStream+53, 10);
1459 cardnum = bytebits_to_byte(BitStream+63, 32);
1460 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1461 } else {
1462 cardnum = bytebits_to_byte(BitStream+81, 16);
1463 if (fmtLen>32){
1464 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1465 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1466 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1467 } else{
1468 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1469 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1470 }
1471 }
1472 if (checksum == checkCS)
1473 PrintAndLog("Checksum %02x passed", checksum);
1474 else
1475 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1476
1477 if (g_debugMode){
1478 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1479 printDemodBuff();
1480 }
1481 return 1;
1482 }
1483
1484 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1485 // 8 databits + 1 parity (1)
1486 // CIITT 16 chksum
1487 // NATIONAL CODE, ICAR database
1488 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1489 // FLAG (animal/non-animal)
1490 /*
1491 38 IDbits
1492 10 country code
1493 1 extra app bit
1494 14 reserved bits
1495 1 animal bit
1496 16 ccitt CRC chksum over 64bit ID CODE.
1497 24 appli bits.
1498
1499 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1500 */
1501 int CmdFDXBdemodBI(const char *Cmd){
1502
1503 int invert = 1;
1504 int clk = 32;
1505 int errCnt = 0;
1506 int maxErr = 0;
1507 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1508 size_t size = getFromGraphBuf(BitStream);
1509
1510 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1511 if ( errCnt < 0 || errCnt > maxErr ) {
1512 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1513 return 0;
1514 }
1515
1516 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1517 if (errCnt < 0 || errCnt > maxErr ) {
1518 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1519 return 0;
1520 }
1521
1522 int preambleIndex = FDXBdemodBI(BitStream, &size);
1523 if (preambleIndex < 0){
1524 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1525 return 0;
1526 }
1527 if (size != 128) {
1528 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1529 return 0;
1530 }
1531
1532 setDemodBuf(BitStream, 128, preambleIndex);
1533
1534 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1535 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1536 if ( size != 104 ) {
1537 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1538 return 0;
1539 }
1540 if (g_debugMode) {
1541 char *bin = sprint_bin_break(BitStream,size,16);
1542 PrintAndLog("DEBUG BinStream:\n%s",bin);
1543 }
1544 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1545 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1546
1547 //got a good demod
1548 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1549 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1550 uint8_t dataBlockBit = BitStream[48];
1551 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1552 uint8_t animalBit = BitStream[63];
1553 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1554 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1555
1556 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1557 uint8_t raw[8];
1558 num_to_bytes(rawid, 8, raw);
1559
1560 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1561
1562 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1563 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1564 PrintAndLog("National Code: %012llu", NationalCode);
1565 PrintAndLog("CountryCode: %04u", countryCode);
1566 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1567 PrintAndLog("reserved Code: %u", reservedCode);
1568 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1569 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1570 PrintAndLog("Extended: 0x%X\n", extended);
1571
1572 return 1;
1573 }
1574
1575
1576 //by marshmellow
1577 //attempt to psk1 demod graph buffer
1578 int PSKDemod(const char *Cmd, bool verbose)
1579 {
1580 int invert=0;
1581 int clk=0;
1582 int maxErr=100;
1583 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1584 if (clk==1){
1585 invert=1;
1586 clk=0;
1587 }
1588 if (invert != 0 && invert != 1) {
1589 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1590 return 0;
1591 }
1592 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1593 size_t BitLen = getFromGraphBuf(BitStream);
1594 if (BitLen==0) return 0;
1595 uint8_t carrier=countFC(BitStream, BitLen, 0);
1596 if (carrier!=2 && carrier!=4 && carrier!=8){
1597 //invalid carrier
1598 return 0;
1599 }
1600 if (g_debugMode){
1601 PrintAndLog("Carrier: rf/%d",carrier);
1602 }
1603 int errCnt=0;
1604 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1605 if (errCnt > maxErr){
1606 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1607 return 0;
1608 }
1609 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1610 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1611 return 0;
1612 }
1613 if (verbose || g_debugMode){
1614 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1615 if (errCnt>0){
1616 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1617 }
1618 }
1619 //prime demod buffer for output
1620 setDemodBuf(BitStream,BitLen,0);
1621 return 1;
1622 }
1623
1624 // Indala 26 bit decode
1625 // by marshmellow
1626 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1627 int CmdIndalaDecode(const char *Cmd)
1628 {
1629 int ans;
1630 if (strlen(Cmd)>0){
1631 ans = PSKDemod(Cmd, 0);
1632 } else{ //default to RF/32
1633 ans = PSKDemod("32", 0);
1634 }
1635
1636 if (!ans){
1637 if (g_debugMode==1)
1638 PrintAndLog("Error1: %d",ans);
1639 return 0;
1640 }
1641 uint8_t invert=0;
1642 size_t size = DemodBufferLen;
1643 size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
1644 if (startIdx < 1 || size > 224) {
1645 if (g_debugMode==1)
1646 PrintAndLog("Error2: %d",ans);
1647 return -1;
1648 }
1649 setDemodBuf(DemodBuffer, size, startIdx);
1650 if (invert)
1651 if (g_debugMode==1)
1652 PrintAndLog("Had to invert bits");
1653
1654 PrintAndLog("BitLen: %d",DemodBufferLen);
1655 //convert UID to HEX
1656 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1657 uid1=bytebits_to_byte(DemodBuffer,32);
1658 uid2=bytebits_to_byte(DemodBuffer+32,32);
1659 if (DemodBufferLen==64) {
1660 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1661 } else {
1662 uid3=bytebits_to_byte(DemodBuffer+64,32);
1663 uid4=bytebits_to_byte(DemodBuffer+96,32);
1664 uid5=bytebits_to_byte(DemodBuffer+128,32);
1665 uid6=bytebits_to_byte(DemodBuffer+160,32);
1666 uid7=bytebits_to_byte(DemodBuffer+192,32);
1667 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1668 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1669 }
1670 if (g_debugMode){
1671 PrintAndLog("DEBUG: printing demodbuffer:");
1672 printDemodBuff();
1673 }
1674 return 1;
1675 }
1676
1677 int CmdPSKNexWatch(const char *Cmd)
1678 {
1679 if (!PSKDemod("", false)) return 0;
1680 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};
1681 size_t startIdx = 0, size = DemodBufferLen;
1682 bool invert = false;
1683 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1684 // if didn't find preamble try again inverting
1685 if (!PSKDemod("1", false)) return 0;
1686 size = DemodBufferLen;
1687 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1688 invert = true;
1689 }
1690 if (size != 128) return 0;
1691 setDemodBuf(DemodBuffer, size, startIdx+4);
1692 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1693 //get ID
1694 uint32_t ID = 0;
1695 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1696 for (uint8_t idx=0; idx<8; idx++){
1697 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1698 }
1699 }
1700 //parity check (TBD)
1701
1702 //checksum check (TBD)
1703
1704 //output
1705 PrintAndLog("NexWatch ID: %d", ID);
1706 if (invert){
1707 PrintAndLog("Had to Invert - probably NexKey");
1708 for (uint8_t idx=0; idx<size; idx++)
1709 DemodBuffer[idx] ^= 1;
1710 }
1711
1712 CmdPrintDemodBuff("x");
1713 return 1;
1714 }
1715
1716 // by marshmellow
1717 // takes 3 arguments - clock, invert, maxErr as integers
1718 // attempts to demodulate nrz only
1719 // prints binary found and saves in demodbuffer for further commands
1720 int NRZrawDemod(const char *Cmd, bool verbose)
1721 {
1722 int invert=0;
1723 int clk=0;
1724 int maxErr=100;
1725 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1726 if (clk==1){
1727 invert=1;
1728 clk=0;
1729 }
1730 if (invert != 0 && invert != 1) {
1731 PrintAndLog("Invalid argument: %s", Cmd);
1732 return 0;
1733 }
1734 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1735 size_t BitLen = getFromGraphBuf(BitStream);
1736 if (BitLen==0) return 0;
1737 int errCnt=0;
1738 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1739 if (errCnt > maxErr){
1740 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1741 return 0;
1742 }
1743 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1744 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1745 return 0;
1746 }
1747 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1748 //prime demod buffer for output
1749 setDemodBuf(BitStream,BitLen,0);
1750
1751 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1752 if (verbose || g_debugMode) {
1753 PrintAndLog("NRZ demoded bitstream:");
1754 // Now output the bitstream to the scrollback by line of 16 bits
1755 printDemodBuff();
1756 }
1757 return 1;
1758 }
1759
1760 int CmdNRZrawDemod(const char *Cmd)
1761 {
1762 char cmdp = param_getchar(Cmd, 0);
1763 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1764 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1765 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1766 PrintAndLog(" <invert>, 1 for invert output");
1767 PrintAndLog(" [set maximum allowed errors], default = 100.");
1768 PrintAndLog("");
1769 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1770 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1771 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1772 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1773 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");
1774 return 0;
1775 }
1776 return NRZrawDemod(Cmd, TRUE);
1777 }
1778
1779 // by marshmellow
1780 // takes 3 arguments - clock, invert, maxErr as integers
1781 // attempts to demodulate psk only
1782 // prints binary found and saves in demodbuffer for further commands
1783 int CmdPSK1rawDemod(const char *Cmd)
1784 {
1785 int ans;
1786 char cmdp = param_getchar(Cmd, 0);
1787 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1788 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1789 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1790 PrintAndLog(" <invert>, 1 for invert output");
1791 PrintAndLog(" [set maximum allowed errors], default = 100.");
1792 PrintAndLog("");
1793 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1794 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1795 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1796 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1797 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");
1798 return 0;
1799 }
1800 ans = PSKDemod(Cmd, TRUE);
1801 //output
1802 if (!ans){
1803 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1804 return 0;
1805 }
1806
1807 PrintAndLog("PSK1 demoded bitstream:");
1808 // Now output the bitstream to the scrollback by line of 16 bits
1809 printDemodBuff();
1810 return 1;
1811 }
1812
1813 // by marshmellow
1814 // takes same args as cmdpsk1rawdemod
1815 int CmdPSK2rawDemod(const char *Cmd)
1816 {
1817 int ans=0;
1818 char cmdp = param_getchar(Cmd, 0);
1819 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1820 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1821 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1822 PrintAndLog(" <invert>, 1 for invert output");
1823 PrintAndLog(" [set maximum allowed errors], default = 100.");
1824 PrintAndLog("");
1825 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1826 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1827 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1828 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1829 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");
1830 return 0;
1831 }
1832 ans=PSKDemod(Cmd, TRUE);
1833 if (!ans){
1834 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1835 return 0;
1836 }
1837 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1838 PrintAndLog("PSK2 demoded bitstream:");
1839 // Now output the bitstream to the scrollback by line of 16 bits
1840 printDemodBuff();
1841 return 1;
1842 }
1843
1844 // by marshmellow - combines all raw demod functions into one menu command
1845 int CmdRawDemod(const char *Cmd)
1846 {
1847 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1848
1849 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1850 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1851 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1852 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1853 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1854 PrintAndLog(" <options> see specific modulation help for optional parameters");
1855 PrintAndLog("");
1856 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1857 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1858 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1859 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1860 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1861 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1862 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1863 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1864 return 0;
1865 }
1866 char cmdp2 = Cmd[1];
1867 int ans = 0;
1868 if (cmdp == 'f' && cmdp2 == 's'){
1869 ans = CmdFSKrawdemod(Cmd+2);
1870 } else if(cmdp == 'a' && cmdp2 == 'b'){
1871 ans = Cmdaskbiphdemod(Cmd+2);
1872 } else if(cmdp == 'a' && cmdp2 == 'm'){
1873 ans = Cmdaskmandemod(Cmd+2);
1874 } else if(cmdp == 'a' && cmdp2 == 'r'){
1875 ans = Cmdaskrawdemod(Cmd+2);
1876 } else if(cmdp == 'n' && cmdp2 == 'r'){
1877 ans = CmdNRZrawDemod(Cmd+2);
1878 } else if(cmdp == 'p' && cmdp2 == '1'){
1879 ans = CmdPSK1rawDemod(Cmd+2);
1880 } else if(cmdp == 'p' && cmdp2 == '2'){
1881 ans = CmdPSK2rawDemod(Cmd+2);
1882 } else {
1883 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1884 }
1885 return ans;
1886 }
1887
1888 int CmdGrid(const char *Cmd)
1889 {
1890 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1891 PlotGridXdefault= PlotGridX;
1892 PlotGridYdefault= PlotGridY;
1893 RepaintGraphWindow();
1894 return 0;
1895 }
1896
1897 int CmdHexsamples(const char *Cmd)
1898 {
1899 int i, j;
1900 int requested = 0;
1901 int offset = 0;
1902 char string_buf[25];
1903 char* string_ptr = string_buf;
1904 uint8_t got[BIGBUF_SIZE];
1905
1906 sscanf(Cmd, "%i %i", &requested, &offset);
1907
1908 /* if no args send something */
1909 if (requested == 0) {
1910 requested = 8;
1911 }
1912 if (offset + requested > sizeof(got)) {
1913 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1914 return 0;
1915 }
1916
1917 GetFromBigBuf(got,requested,offset);
1918 WaitForResponse(CMD_ACK,NULL);
1919
1920 i = 0;
1921 for (j = 0; j < requested; j++) {
1922 i++;
1923 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1924 if (i == 8) {
1925 *(string_ptr - 1) = '\0'; // remove the trailing space
1926 PrintAndLog("%s", string_buf);
1927 string_buf[0] = '\0';
1928 string_ptr = string_buf;
1929 i = 0;
1930 }
1931 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1932 *(string_ptr - 1) = '\0';
1933 PrintAndLog("%s", string_buf);
1934 string_buf[0] = '\0';
1935 }
1936 }
1937 return 0;
1938 }
1939
1940 int CmdHide(const char *Cmd)
1941 {
1942 HideGraphWindow();
1943 return 0;
1944 }
1945
1946 //zero mean GraphBuffer
1947 int CmdHpf(const char *Cmd)
1948 {
1949 int i;
1950 int accum = 0;
1951
1952 for (i = 10; i < GraphTraceLen; ++i)
1953 accum += GraphBuffer[i];
1954 accum /= (GraphTraceLen - 10);
1955 for (i = 0; i < GraphTraceLen; ++i)
1956 GraphBuffer[i] -= accum;
1957
1958 RepaintGraphWindow();
1959 return 0;
1960 }
1961
1962 uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
1963 {
1964 int i;
1965 uint8_t val = 0;
1966 for(i =0 ; i < bits_per_sample; i++)
1967 {
1968 val |= (headBit(b) << (7-i));
1969 }
1970 return val;
1971 }
1972
1973 int getSamples(const char *Cmd, bool silent)
1974 {
1975 //If we get all but the last byte in bigbuf,
1976 // we don't have to worry about remaining trash
1977 // in the last byte in case the bits-per-sample
1978 // does not line up on byte boundaries
1979
1980 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1981
1982 int n = strtol(Cmd, NULL, 0);
1983
1984 if (n == 0 || n > sizeof(got))
1985 n = sizeof(got);
1986
1987 PrintAndLog("Reading %d bytes from device memory\n", n);
1988 GetFromBigBuf(got,n,0);
1989 PrintAndLog("Data fetched");
1990 UsbCommand response;
1991 WaitForResponse(CMD_ACK, &response);
1992 uint8_t bits_per_sample = 8;
1993
1994 //Old devices without this feature would send 0 at arg[0]
1995 if(response.arg[0] > 0)
1996 {
1997 sample_config *sc = (sample_config *) response.d.asBytes;
1998 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1999 , sc->decimation);
2000 bits_per_sample = sc->bits_per_sample;
2001 }
2002 if(bits_per_sample < 8)
2003 {
2004 PrintAndLog("Unpacking...");
2005 BitstreamIn bout = { got, bits_per_sample * n, 0};
2006 int j =0;
2007 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2008 uint8_t sample = getByte(bits_per_sample, &bout);
2009 GraphBuffer[j] = ((int) sample )- 128;
2010 }
2011 GraphTraceLen = j;
2012 PrintAndLog("Unpacked %d samples" , j );
2013 }else
2014 {
2015 for (int j = 0; j < n; j++) {
2016 GraphBuffer[j] = ((int)got[j]) - 128;
2017 }
2018 GraphTraceLen = n;
2019 }
2020
2021 RepaintGraphWindow();
2022 return 0;
2023 }
2024
2025 int CmdSamples(const char *Cmd)
2026 {
2027 return getSamples(Cmd, false);
2028 }
2029
2030 int CmdTuneSamples(const char *Cmd)
2031 {
2032 int timeout = 0;
2033 printf("\nMeasuring antenna characteristics, please wait...");
2034
2035 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2036 SendCommand(&c);
2037
2038 UsbCommand resp;
2039 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2040 timeout++;
2041 printf(".");
2042 if (timeout > 7) {
2043 PrintAndLog("\nNo response from Proxmark. Aborting...");
2044 return 1;
2045 }
2046 }
2047
2048 int peakv, peakf;
2049 int vLf125, vLf134, vHf;
2050 vLf125 = resp.arg[0] & 0xffff;
2051 vLf134 = resp.arg[0] >> 16;
2052 vHf = resp.arg[1] & 0xffff;;
2053 peakf = resp.arg[2] & 0xffff;
2054 peakv = resp.arg[2] >> 16;
2055 PrintAndLog("");
2056 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2057 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2058 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2059 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2060
2061 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2062 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2063 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2064 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2065
2066 if (peakv < LF_UNUSABLE_V)
2067 PrintAndLog("# Your LF antenna is unusable.");
2068 else if (peakv < LF_MARGINAL_V)
2069 PrintAndLog("# Your LF antenna is marginal.");
2070 if (vHf < HF_UNUSABLE_V)
2071 PrintAndLog("# Your HF antenna is unusable.");
2072 else if (vHf < HF_MARGINAL_V)
2073 PrintAndLog("# Your HF antenna is marginal.");
2074
2075 if (peakv >= LF_UNUSABLE_V) {
2076 for (int i = 0; i < 256; i++) {
2077 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2078 }
2079 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2080 PrintAndLog("\n");
2081 GraphTraceLen = 256;
2082 ShowGraphWindow();
2083 RepaintGraphWindow();
2084 }
2085
2086 return 0;
2087 }
2088
2089
2090 int CmdLoad(const char *Cmd)
2091 {
2092 char filename[FILE_PATH_SIZE] = {0x00};
2093 int len = 0;
2094
2095 len = strlen(Cmd);
2096 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2097 memcpy(filename, Cmd, len);
2098
2099 FILE *f = fopen(filename, "r");
2100 if (!f) {
2101 PrintAndLog("couldn't open '%s'", filename);
2102 return 0;
2103 }
2104
2105 GraphTraceLen = 0;
2106 char line[80];
2107 while (fgets(line, sizeof (line), f)) {
2108 GraphBuffer[GraphTraceLen] = atoi(line);
2109 GraphTraceLen++;
2110 }
2111 fclose(f);
2112 PrintAndLog("loaded %d samples", GraphTraceLen);
2113 RepaintGraphWindow();
2114 return 0;
2115 }
2116
2117 int CmdLtrim(const char *Cmd)
2118 {
2119 int ds = atoi(Cmd);
2120 if (GraphTraceLen<=0) return 0;
2121 for (int i = ds; i < GraphTraceLen; ++i)
2122 GraphBuffer[i-ds] = GraphBuffer[i];
2123 GraphTraceLen -= ds;
2124
2125 RepaintGraphWindow();
2126 return 0;
2127 }
2128
2129 // trim graph to input argument length
2130 int CmdRtrim(const char *Cmd)
2131 {
2132 int ds = atoi(Cmd);
2133
2134 GraphTraceLen = ds;
2135
2136 RepaintGraphWindow();
2137 return 0;
2138 }
2139
2140 int CmdNorm(const char *Cmd)
2141 {
2142 int i;
2143 int max = INT_MIN, min = INT_MAX;
2144
2145 for (i = 10; i < GraphTraceLen; ++i) {
2146 if (GraphBuffer[i] > max)
2147 max = GraphBuffer[i];
2148 if (GraphBuffer[i] < min)
2149 min = GraphBuffer[i];
2150 }
2151
2152 if (max != min) {
2153 for (i = 0; i < GraphTraceLen; ++i) {
2154 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2155 (max - min);
2156 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2157 }
2158 }
2159 RepaintGraphWindow();
2160 return 0;
2161 }
2162
2163 int CmdPlot(const char *Cmd)
2164 {
2165 ShowGraphWindow();
2166 return 0;
2167 }
2168
2169 int CmdSave(const char *Cmd)
2170 {
2171 char filename[FILE_PATH_SIZE] = {0x00};
2172 int len = 0;
2173
2174 len = strlen(Cmd);
2175 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2176 memcpy(filename, Cmd, len);
2177
2178
2179 FILE *f = fopen(filename, "w");
2180 if(!f) {
2181 PrintAndLog("couldn't open '%s'", filename);
2182 return 0;
2183 }
2184 int i;
2185 for (i = 0; i < GraphTraceLen; i++) {
2186 fprintf(f, "%d\n", GraphBuffer[i]);
2187 }
2188 fclose(f);
2189 PrintAndLog("saved to '%s'", Cmd);
2190 return 0;
2191 }
2192
2193 int CmdScale(const char *Cmd)
2194 {
2195 CursorScaleFactor = atoi(Cmd);
2196 if (CursorScaleFactor == 0) {
2197 PrintAndLog("bad, can't have zero scale");
2198 CursorScaleFactor = 1;
2199 }
2200 RepaintGraphWindow();
2201 return 0;
2202 }
2203
2204 int CmdDirectionalThreshold(const char *Cmd)
2205 {
2206 int8_t upThres = param_get8(Cmd, 0);
2207 int8_t downThres = param_get8(Cmd, 1);
2208
2209 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2210
2211 int lastValue = GraphBuffer[0];
2212 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2213
2214 for (int i = 1; i < GraphTraceLen; ++i) {
2215 // Apply first threshold to samples heading up
2216 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2217 {
2218 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2219 GraphBuffer[i] = 1;
2220 }
2221 // Apply second threshold to samples heading down
2222 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2223 {
2224 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2225 GraphBuffer[i] = -1;
2226 }
2227 else
2228 {
2229 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2230 GraphBuffer[i] = GraphBuffer[i-1];
2231
2232 }
2233 }
2234 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2235 RepaintGraphWindow();
2236 return 0;
2237 }
2238
2239 int CmdZerocrossings(const char *Cmd)
2240 {
2241 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2242 CmdHpf("");
2243
2244 int sign = 1;
2245 int zc = 0;
2246 int lastZc = 0;
2247
2248 for (int i = 0; i < GraphTraceLen; ++i) {
2249 if (GraphBuffer[i] * sign >= 0) {
2250 // No change in sign, reproduce the previous sample count.
2251 zc++;
2252 GraphBuffer[i] = lastZc;
2253 } else {
2254 // Change in sign, reset the sample count.
2255 sign = -sign;
2256 GraphBuffer[i] = lastZc;
2257 if (sign > 0) {
2258 lastZc = zc;
2259 zc = 0;
2260 }
2261 }
2262 }
2263
2264 RepaintGraphWindow();
2265 return 0;
2266 }
2267
2268 int usage_data_bin2hex(){
2269 PrintAndLog("Usage: data bin2hex <binary_digits>");
2270 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2271 return 0;
2272 }
2273
2274 /**
2275 * @brief Utility for conversion via cmdline.
2276 * @param Cmd
2277 * @return
2278 */
2279 int Cmdbin2hex(const char *Cmd)
2280 {
2281 int bg =0, en =0;
2282 if(param_getptr(Cmd, &bg, &en, 0))
2283 {
2284 return usage_data_bin2hex();
2285 }
2286 //Number of digits supplied as argument
2287 size_t length = en - bg +1;
2288 size_t bytelen = (length+7) / 8;
2289 uint8_t* arr = (uint8_t *) malloc(bytelen);
2290 memset(arr, 0, bytelen);
2291 BitstreamOut bout = { arr, 0, 0 };
2292
2293 for(; bg <= en ;bg++)
2294 {
2295 char c = Cmd[bg];
2296 if( c == '1') pushBit(&bout, 1);
2297 else if( c == '0') pushBit(&bout, 0);
2298 else PrintAndLog("Ignoring '%c'", c);
2299 }
2300
2301 if(bout.numbits % 8 != 0)
2302 {
2303 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2304 }
2305
2306 //Uses printf instead of PrintAndLog since the latter
2307 // adds linebreaks to each printout - this way was more convenient since we don't have to
2308 // allocate a string and write to that first...
2309 for(size_t x = 0; x < bytelen ; x++)
2310 {
2311 printf("%02X", arr[x]);
2312 }
2313 printf("\n");
2314 free(arr);
2315 return 0;
2316 }
2317
2318 int usage_data_hex2bin(){
2319
2320 PrintAndLog("Usage: data bin2hex <binary_digits>");
2321 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2322 return 0;
2323
2324 }
2325
2326 int Cmdhex2bin(const char *Cmd)
2327 {
2328 int bg =0, en =0;
2329 if(param_getptr(Cmd, &bg, &en, 0))
2330 {
2331 return usage_data_hex2bin();
2332 }
2333
2334
2335 while(bg <= en )
2336 {
2337 char x = Cmd[bg++];
2338 // capitalize
2339 if (x >= 'a' && x <= 'f')
2340 x -= 32;
2341 // convert to numeric value
2342 if (x >= '0' && x <= '9')
2343 x -= '0';
2344 else if (x >= 'A' && x <= 'F')
2345 x -= 'A' - 10;
2346 else
2347 continue;
2348
2349 //Uses printf instead of PrintAndLog since the latter
2350 // adds linebreaks to each printout - this way was more convenient since we don't have to
2351 // allocate a string and write to that first...
2352
2353 for(int i= 0 ; i < 4 ; ++i)
2354 printf("%d",(x >> (3 - i)) & 1);
2355 }
2356 printf("\n");
2357
2358 return 0;
2359 }
2360
2361 static command_t CommandTable[] =
2362 {
2363 {"help", CmdHelp, 1, "This help"},
2364 {"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)"},
2365 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2366 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2367 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"},
2368 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2369 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2370 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2371 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2372 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2373 {"dec", CmdDec, 1, "Decimate samples"},
2374 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2375 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2376 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2377 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2378 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2379 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2380 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2381 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2382 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2383 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2384 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2385 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2386 {"hide", CmdHide, 1, "Hide graph window"},
2387 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2388 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2389 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2390 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2391 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2392 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2393 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2394 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2395 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2396 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2397 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2398 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2399 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2400 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2401 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2402 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2403 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2404 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2405 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2406 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2407 {NULL, NULL, 0, NULL}
2408 };
2409
2410 int CmdData(const char *Cmd)
2411 {
2412 CmdsParse(CommandTable, Cmd);
2413 return 0;
2414 }
2415
2416 int CmdHelp(const char *Cmd)
2417 {
2418 CmdsHelp(CommandTable);
2419 return 0;
2420 }
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