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fix print clock as decimal instead of uint8_t
[proxmark3-svn] / client / cmddata.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // 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 char *fskType;
923 if (fchigh==10 && fclow==8){
924 if (invert) //fsk2a
925 fskType = "FSK2a";
926 else //fsk2
927 fskType = "FSK2";
928 } else if (fchigh == 8 && fclow == 5) {
929 if (invert)
930 fskType = "FSK1";
931 else
932 fskType = "FSK1a";
933 } else {
934 fskType = "FSK??";
935 }
936 return fskType;
937 }
938
939 //by marshmellow
940 //fsk raw demod and print binary
941 //takes 4 arguments - Clock, invert, fchigh, fclow
942 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
943 int FSKrawDemod(const char *Cmd, bool verbose)
944 {
945 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
946 uint8_t rfLen, invert, fchigh, fclow;
947 //set defaults
948 //set options from parameters entered with the command
949 rfLen = param_get8(Cmd, 0);
950 invert = param_get8(Cmd, 1);
951 fchigh = param_get8(Cmd, 2);
952 fclow = param_get8(Cmd, 3);
953 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
954 if (rfLen==1){
955 invert = 1; //if invert option only is used
956 rfLen = 0;
957 }
958 }
959 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
960 size_t BitLen = getFromGraphBuf(BitStream);
961 if (BitLen==0) return 0;
962 //get field clock lengths
963 uint8_t fc1=0, fc2=0, rf1=0;
964 if (!fchigh || !fclow) {
965 uint8_t ans = fskClocks(&fc1, &fc2, &rf1, false);
966 if (ans == 0) {
967 if (g_debugMode) PrintAndLog("\nError: cannot detect valid fsk field clocks");
968 return 0; // can't detect field clock
969 }
970 fchigh = fc1;
971 fclow = fc2;
972 if (rfLen == 0) rfLen = rf1;
973 }
974 //get bit clock length
975 if (!rfLen){
976 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
977 if (!rfLen) rfLen = 50;
978 }
979 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
980 if (size > 0){
981 setDemodBuf(BitStream,size,0);
982
983 // Now output the bitstream to the scrollback by line of 16 bits
984 if (verbose || g_debugMode) {
985 PrintAndLog("\nUsing Clock:%hu, invert:%hu, fchigh:%hu, fclow:%hu", rfLen, invert, fchigh, fclow);
986 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
987 printDemodBuff();
988 }
989
990 return 1;
991 } else {
992 if (g_debugMode) PrintAndLog("no FSK data found");
993 }
994 return 0;
995 }
996
997 //by marshmellow
998 //fsk raw demod and print binary
999 //takes 4 arguments - Clock, invert, fchigh, fclow
1000 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1001 int CmdFSKrawdemod(const char *Cmd)
1002 {
1003 char cmdp = param_getchar(Cmd, 0);
1004 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1005 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1006 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1007 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1008 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1009 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1010 PrintAndLog("");
1011 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1012 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1013 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1014 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1015 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1016 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1017 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1018 return 0;
1019 }
1020 return FSKrawDemod(Cmd, TRUE);
1021 }
1022
1023 //by marshmellow (based on existing demod + holiman's refactor)
1024 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1025 //print full HID Prox ID and some bit format details if found
1026 int CmdFSKdemodHID(const char *Cmd)
1027 {
1028 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1029 uint32_t hi2=0, hi=0, lo=0;
1030
1031 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1032 size_t BitLen = getFromGraphBuf(BitStream);
1033 if (BitLen==0) return 0;
1034 //get binary from fsk wave
1035 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1036 if (idx<0){
1037 if (g_debugMode){
1038 if (idx==-1){
1039 PrintAndLog("DEBUG: Just Noise Detected");
1040 } else if (idx == -2) {
1041 PrintAndLog("DEBUG: Error demoding fsk");
1042 } else if (idx == -3) {
1043 PrintAndLog("DEBUG: Preamble not found");
1044 } else if (idx == -4) {
1045 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1046 } else {
1047 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1048 }
1049 }
1050 return 0;
1051 }
1052 if (hi2==0 && hi==0 && lo==0) {
1053 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1054 return 0;
1055 }
1056 if (hi2 != 0){ //extra large HID tags
1057 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1058 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1059 }
1060 else { //standard HID tags <38 bits
1061 uint8_t fmtLen = 0;
1062 uint32_t fc = 0;
1063 uint32_t cardnum = 0;
1064 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1065 uint32_t lo2=0;
1066 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1067 uint8_t idx3 = 1;
1068 while(lo2>1){ //find last bit set to 1 (format len bit)
1069 lo2=lo2>>1;
1070 idx3++;
1071 }
1072 fmtLen =idx3+19;
1073 fc =0;
1074 cardnum=0;
1075 if(fmtLen==26){
1076 cardnum = (lo>>1)&0xFFFF;
1077 fc = (lo>>17)&0xFF;
1078 }
1079 if(fmtLen==34){
1080 cardnum = (lo>>1)&0xFFFF;
1081 fc= ((hi&1)<<15)|(lo>>17);
1082 }
1083 if(fmtLen==35){
1084 cardnum = (lo>>1)&0xFFFFF;
1085 fc = ((hi&1)<<11)|(lo>>21);
1086 }
1087 }
1088 else { //if bit 38 is not set then 37 bit format is used
1089 fmtLen = 37;
1090 fc = 0;
1091 cardnum = 0;
1092 if(fmtLen == 37){
1093 cardnum = (lo>>1)&0x7FFFF;
1094 fc = ((hi&0xF)<<12)|(lo>>20);
1095 }
1096 }
1097 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1098 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1099 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1100 }
1101 setDemodBuf(BitStream,BitLen,idx);
1102 if (g_debugMode){
1103 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1104 printDemodBuff();
1105 }
1106 return 1;
1107 }
1108
1109 //by marshmellow
1110 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1111 //print full Paradox Prox ID and some bit format details if found
1112 int CmdFSKdemodParadox(const char *Cmd)
1113 {
1114 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1115 uint32_t hi2=0, hi=0, lo=0;
1116
1117 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1118 size_t BitLen = getFromGraphBuf(BitStream);
1119 if (BitLen==0) return 0;
1120 //get binary from fsk wave
1121 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1122 if (idx<0){
1123 if (g_debugMode){
1124 if (idx==-1){
1125 PrintAndLog("DEBUG: Just Noise Detected");
1126 } else if (idx == -2) {
1127 PrintAndLog("DEBUG: Error demoding fsk");
1128 } else if (idx == -3) {
1129 PrintAndLog("DEBUG: Preamble not found");
1130 } else if (idx == -4) {
1131 PrintAndLog("DEBUG: Error in Manchester data");
1132 } else {
1133 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1134 }
1135 }
1136 return 0;
1137 }
1138 if (hi2==0 && hi==0 && lo==0){
1139 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1140 return 0;
1141 }
1142 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1143 uint32_t cardnum = (lo>>10)&0xFFFF;
1144 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1145 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1146 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1147
1148 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1149 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1150 setDemodBuf(BitStream,BitLen,idx);
1151 if (g_debugMode){
1152 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1153 printDemodBuff();
1154 }
1155 return 1;
1156 }
1157
1158 //by marshmellow
1159 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1160 //print ioprox ID and some format details
1161 int CmdFSKdemodIO(const char *Cmd)
1162 {
1163 int idx=0;
1164 //something in graphbuffer?
1165 if (GraphTraceLen < 65) {
1166 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1167 return 0;
1168 }
1169 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1170 size_t BitLen = getFromGraphBuf(BitStream);
1171 if (BitLen==0) return 0;
1172
1173 //get binary from fsk wave
1174 idx = IOdemodFSK(BitStream,BitLen);
1175 if (idx<0){
1176 if (g_debugMode){
1177 if (idx==-1){
1178 PrintAndLog("DEBUG: Just Noise Detected");
1179 } else if (idx == -2) {
1180 PrintAndLog("DEBUG: not enough samples");
1181 } else if (idx == -3) {
1182 PrintAndLog("DEBUG: error during fskdemod");
1183 } else if (idx == -4) {
1184 PrintAndLog("DEBUG: Preamble not found");
1185 } else if (idx == -5) {
1186 PrintAndLog("DEBUG: Separator bits not found");
1187 } else {
1188 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1189 }
1190 }
1191 return 0;
1192 }
1193 if (idx==0){
1194 if (g_debugMode){
1195 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1196 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1197 }
1198 return 0;
1199 }
1200 //Index map
1201 //0 10 20 30 40 50 60
1202 //| | | | | | |
1203 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1204 //-----------------------------------------------------------------------------
1205 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1206 //
1207 //XSF(version)facility:codeone+codetwo (raw)
1208 //Handle the data
1209 if (idx+64>BitLen) {
1210 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1211 return 0;
1212 }
1213 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]);
1214 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]);
1215 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]);
1216 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]);
1217 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]);
1218 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]);
1219 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]);
1220
1221 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1222 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1223 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1224 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1225 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1226 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1227 uint16_t calccrc = 0;
1228
1229 for (uint8_t i=1; i<6; ++i){
1230 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1231 }
1232 calccrc &= 0xff;
1233 calccrc = 0xff - calccrc;
1234
1235 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1236
1237 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1238 setDemodBuf(BitStream,64,idx);
1239 if (g_debugMode){
1240 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1241 printDemodBuff();
1242 }
1243 return 1;
1244 }
1245
1246 //by marshmellow
1247 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1248 //print full AWID Prox ID and some bit format details if found
1249 int CmdFSKdemodAWID(const char *Cmd)
1250 {
1251 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1252 size_t size = getFromGraphBuf(BitStream);
1253 if (size==0) return 0;
1254
1255 //get binary from fsk wave
1256 int idx = AWIDdemodFSK(BitStream, &size);
1257 if (idx<=0){
1258 if (g_debugMode==1){
1259 if (idx == -1)
1260 PrintAndLog("DEBUG: Error - not enough samples");
1261 else if (idx == -2)
1262 PrintAndLog("DEBUG: Error - only noise found");
1263 else if (idx == -3)
1264 PrintAndLog("DEBUG: Error - problem during FSK demod");
1265 else if (idx == -4)
1266 PrintAndLog("DEBUG: Error - AWID preamble not found");
1267 else if (idx == -5)
1268 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1269 else
1270 PrintAndLog("DEBUG: Error %d",idx);
1271 }
1272 return 0;
1273 }
1274
1275 // Index map
1276 // 0 10 20 30 40 50 60
1277 // | | | | | | |
1278 // 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
1279 // -----------------------------------------------------------------------------
1280 // 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
1281 // 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
1282 // |---26 bit---| |-----117----||-------------142-------------|
1283 // b = format bit len, o = odd parity of last 3 bits
1284 // f = facility code, c = card number
1285 // w = wiegand parity
1286 // (26 bit format shown)
1287
1288 //get raw ID before removing parities
1289 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1290 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1291 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1292 setDemodBuf(BitStream,96,idx);
1293
1294 size = removeParity(BitStream, idx+8, 4, 1, 88);
1295 if (size != 66){
1296 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1297 return 0;
1298 }
1299 // ok valid card found!
1300
1301 // Index map
1302 // 0 10 20 30 40 50 60
1303 // | | | | | | |
1304 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1305 // -----------------------------------------------------------------------------
1306 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1307 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1308 // |26 bit| |-117--| |-----142------|
1309 // b = format bit len, o = odd parity of last 3 bits
1310 // f = facility code, c = card number
1311 // w = wiegand parity
1312 // (26 bit format shown)
1313
1314 uint32_t fc = 0;
1315 uint32_t cardnum = 0;
1316 uint32_t code1 = 0;
1317 uint32_t code2 = 0;
1318 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1319 if (fmtLen==26){
1320 fc = bytebits_to_byte(BitStream+9, 8);
1321 cardnum = bytebits_to_byte(BitStream+17, 16);
1322 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1323 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1324 } else {
1325 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1326 if (fmtLen>32){
1327 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1328 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1329 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1330 } else{
1331 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1332 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1333 }
1334 }
1335 if (g_debugMode){
1336 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1337 printDemodBuff();
1338 }
1339 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1340 return 1;
1341 }
1342
1343 //by marshmellow
1344 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1345 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1346 int CmdFSKdemodPyramid(const char *Cmd)
1347 {
1348 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1349 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1350 size_t size = getFromGraphBuf(BitStream);
1351 if (size==0) return 0;
1352
1353 //get binary from fsk wave
1354 int idx = PyramiddemodFSK(BitStream, &size);
1355 if (idx < 0){
1356 if (g_debugMode==1){
1357 if (idx == -5)
1358 PrintAndLog("DEBUG: Error - not enough samples");
1359 else if (idx == -1)
1360 PrintAndLog("DEBUG: Error - only noise found");
1361 else if (idx == -2)
1362 PrintAndLog("DEBUG: Error - problem during FSK demod");
1363 else if (idx == -3)
1364 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1365 else if (idx == -4)
1366 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1367 else
1368 PrintAndLog("DEBUG: Error - idx: %d",idx);
1369 }
1370 return 0;
1371 }
1372 // Index map
1373 // 0 10 20 30 40 50 60
1374 // | | | | | | |
1375 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1376 // -----------------------------------------------------------------------------
1377 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1378 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1379
1380 // 64 70 80 90 100 110 120
1381 // | | | | | | |
1382 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1383 // -----------------------------------------------------------------------------
1384 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1385 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1386 // |---115---||---------71---------|
1387 // s = format start bit, o = odd parity of last 7 bits
1388 // f = facility code, c = card number
1389 // w = wiegand parity, x = extra space for other formats
1390 // p = unknown checksum
1391 // (26 bit format shown)
1392
1393 //get bytes for checksum calc
1394 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1395 uint8_t csBuff[14] = {0x00};
1396 for (uint8_t i = 0; i < 13; i++){
1397 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1398 }
1399 //check checksum calc
1400 //checksum calc thanks to ICEMAN!!
1401 uint32_t checkCS = CRC8Maxim(csBuff,13);
1402
1403 //get raw ID before removing parities
1404 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1405 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1406 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1407 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1408 setDemodBuf(BitStream,128,idx);
1409
1410 size = removeParity(BitStream, idx+8, 8, 1, 120);
1411 if (size != 105){
1412 if (g_debugMode==1)
1413 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1414 return 0;
1415 }
1416
1417 // ok valid card found!
1418
1419 // Index map
1420 // 0 10 20 30 40 50 60 70
1421 // | | | | | | | |
1422 // 01234567890123456789012345678901234567890123456789012345678901234567890
1423 // -----------------------------------------------------------------------
1424 // 00000000000000000000000000000000000000000000000000000000000000000000000
1425 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1426
1427 // 71 80 90 100
1428 // | | | |
1429 // 1 2 34567890 1234567890123456 7 8901234
1430 // ---------------------------------------
1431 // 1 1 01110011 0000000001000110 0 1001010
1432 // s w ffffffff cccccccccccccccc w ppppppp
1433 // |--115-| |------71------|
1434 // s = format start bit, o = odd parity of last 7 bits
1435 // f = facility code, c = card number
1436 // w = wiegand parity, x = extra space for other formats
1437 // p = unknown checksum
1438 // (26 bit format shown)
1439
1440 //find start bit to get fmtLen
1441 int j;
1442 for (j=0; j<size; j++){
1443 if(BitStream[j]) break;
1444 }
1445 uint8_t fmtLen = size-j-8;
1446 uint32_t fc = 0;
1447 uint32_t cardnum = 0;
1448 uint32_t code1 = 0;
1449 if (fmtLen==26){
1450 fc = bytebits_to_byte(BitStream+73, 8);
1451 cardnum = bytebits_to_byte(BitStream+81, 16);
1452 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1453 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);
1454 } else if (fmtLen==45){
1455 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1456 fc = bytebits_to_byte(BitStream+53, 10);
1457 cardnum = bytebits_to_byte(BitStream+63, 32);
1458 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1459 } else {
1460 cardnum = bytebits_to_byte(BitStream+81, 16);
1461 if (fmtLen>32){
1462 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1463 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1464 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1465 } else{
1466 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1467 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1468 }
1469 }
1470 if (checksum == checkCS)
1471 PrintAndLog("Checksum %02x passed", checksum);
1472 else
1473 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1474
1475 if (g_debugMode){
1476 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1477 printDemodBuff();
1478 }
1479 return 1;
1480 }
1481
1482 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1483 // 8 databits + 1 parity (1)
1484 // CIITT 16 chksum
1485 // NATIONAL CODE, ICAR database
1486 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1487 // FLAG (animal/non-animal)
1488 /*
1489 38 IDbits
1490 10 country code
1491 1 extra app bit
1492 14 reserved bits
1493 1 animal bit
1494 16 ccitt CRC chksum over 64bit ID CODE.
1495 24 appli bits.
1496
1497 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1498 */
1499 int CmdFDXBdemodBI(const char *Cmd){
1500
1501 int invert = 1;
1502 int clk = 32;
1503 int errCnt = 0;
1504 int maxErr = 0;
1505 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1506 size_t size = getFromGraphBuf(BitStream);
1507
1508 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1509 if ( errCnt < 0 || errCnt > maxErr ) {
1510 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1511 return 0;
1512 }
1513
1514 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1515 if (errCnt < 0 || errCnt > maxErr ) {
1516 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1517 return 0;
1518 }
1519
1520 int preambleIndex = FDXBdemodBI(BitStream, &size);
1521 if (preambleIndex < 0){
1522 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1523 return 0;
1524 }
1525 if (size != 128) {
1526 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1527 return 0;
1528 }
1529
1530 setDemodBuf(BitStream, 128, preambleIndex);
1531
1532 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1533 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1534 if ( size != 104 ) {
1535 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1536 return 0;
1537 }
1538 if (g_debugMode) {
1539 char *bin = sprint_bin_break(BitStream,size,16);
1540 PrintAndLog("DEBUG BinStream:\n%s",bin);
1541 }
1542 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1543 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1544
1545 //got a good demod
1546 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1547 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1548 uint8_t dataBlockBit = BitStream[48];
1549 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1550 uint8_t animalBit = BitStream[63];
1551 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1552 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1553
1554 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1555 uint8_t raw[8];
1556 num_to_bytes(rawid, 8, raw);
1557
1558 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1559
1560 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1561 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1562 PrintAndLog("National Code: %012llu", NationalCode);
1563 PrintAndLog("CountryCode: %04u", countryCode);
1564 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1565 PrintAndLog("reserved Code: %u", reservedCode);
1566 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1567 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1568 PrintAndLog("Extended: 0x%X\n", extended);
1569
1570 return 1;
1571 }
1572
1573
1574 //by marshmellow
1575 //attempt to psk1 demod graph buffer
1576 int PSKDemod(const char *Cmd, bool verbose)
1577 {
1578 int invert=0;
1579 int clk=0;
1580 int maxErr=100;
1581 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1582 if (clk==1){
1583 invert=1;
1584 clk=0;
1585 }
1586 if (invert != 0 && invert != 1) {
1587 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1588 return 0;
1589 }
1590 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1591 size_t BitLen = getFromGraphBuf(BitStream);
1592 if (BitLen==0) return 0;
1593 uint8_t carrier=countFC(BitStream, BitLen, 0);
1594 if (carrier!=2 && carrier!=4 && carrier!=8){
1595 //invalid carrier
1596 return 0;
1597 }
1598 if (g_debugMode){
1599 PrintAndLog("Carrier: rf/%d",carrier);
1600 }
1601 int errCnt=0;
1602 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1603 if (errCnt > maxErr){
1604 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1605 return 0;
1606 }
1607 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1608 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1609 return 0;
1610 }
1611 if (verbose || g_debugMode){
1612 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1613 if (errCnt>0){
1614 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1615 }
1616 }
1617 //prime demod buffer for output
1618 setDemodBuf(BitStream,BitLen,0);
1619 return 1;
1620 }
1621
1622 // Indala 26 bit decode
1623 // by marshmellow
1624 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1625 int CmdIndalaDecode(const char *Cmd)
1626 {
1627 int ans;
1628 if (strlen(Cmd)>0){
1629 ans = PSKDemod(Cmd, 0);
1630 } else{ //default to RF/32
1631 ans = PSKDemod("32", 0);
1632 }
1633
1634 if (!ans){
1635 if (g_debugMode==1)
1636 PrintAndLog("Error1: %d",ans);
1637 return 0;
1638 }
1639 uint8_t invert=0;
1640 size_t size = DemodBufferLen;
1641 size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
1642 if (startIdx < 1 || size > 224) {
1643 if (g_debugMode==1)
1644 PrintAndLog("Error2: %d",ans);
1645 return -1;
1646 }
1647 setDemodBuf(DemodBuffer, size, startIdx);
1648 if (invert)
1649 if (g_debugMode==1)
1650 PrintAndLog("Had to invert bits");
1651
1652 PrintAndLog("BitLen: %d",DemodBufferLen);
1653 //convert UID to HEX
1654 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1655 uid1=bytebits_to_byte(DemodBuffer,32);
1656 uid2=bytebits_to_byte(DemodBuffer+32,32);
1657 if (DemodBufferLen==64) {
1658 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1659 } else {
1660 uid3=bytebits_to_byte(DemodBuffer+64,32);
1661 uid4=bytebits_to_byte(DemodBuffer+96,32);
1662 uid5=bytebits_to_byte(DemodBuffer+128,32);
1663 uid6=bytebits_to_byte(DemodBuffer+160,32);
1664 uid7=bytebits_to_byte(DemodBuffer+192,32);
1665 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1666 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1667 }
1668 if (g_debugMode){
1669 PrintAndLog("DEBUG: printing demodbuffer:");
1670 printDemodBuff();
1671 }
1672 return 1;
1673 }
1674
1675 int CmdPSKNexWatch(const char *Cmd)
1676 {
1677 if (!PSKDemod("", false)) return 0;
1678 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};
1679 size_t startIdx = 0, size = DemodBufferLen;
1680 bool invert = false;
1681 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1682 // if didn't find preamble try again inverting
1683 if (!PSKDemod("1", false)) return 0;
1684 size = DemodBufferLen;
1685 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1686 invert = true;
1687 }
1688 if (size != 128) return 0;
1689 setDemodBuf(DemodBuffer, size, startIdx+4);
1690 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1691 //get ID
1692 uint32_t ID = 0;
1693 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1694 for (uint8_t idx=0; idx<8; idx++){
1695 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1696 }
1697 }
1698 //parity check (TBD)
1699
1700 //checksum check (TBD)
1701
1702 //output
1703 PrintAndLog("NexWatch ID: %d", ID);
1704 if (invert){
1705 PrintAndLog("Had to Invert - probably NexKey");
1706 for (uint8_t idx=0; idx<size; idx++)
1707 DemodBuffer[idx] ^= 1;
1708 }
1709
1710 CmdPrintDemodBuff("x");
1711 return 1;
1712 }
1713
1714 // by marshmellow
1715 // takes 3 arguments - clock, invert, maxErr as integers
1716 // attempts to demodulate nrz only
1717 // prints binary found and saves in demodbuffer for further commands
1718 int NRZrawDemod(const char *Cmd, bool verbose)
1719 {
1720 int invert=0;
1721 int clk=0;
1722 int maxErr=100;
1723 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1724 if (clk==1){
1725 invert=1;
1726 clk=0;
1727 }
1728 if (invert != 0 && invert != 1) {
1729 PrintAndLog("Invalid argument: %s", Cmd);
1730 return 0;
1731 }
1732 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1733 size_t BitLen = getFromGraphBuf(BitStream);
1734 if (BitLen==0) return 0;
1735 int errCnt=0;
1736 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1737 if (errCnt > maxErr){
1738 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1739 return 0;
1740 }
1741 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1742 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1743 return 0;
1744 }
1745 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1746 //prime demod buffer for output
1747 setDemodBuf(BitStream,BitLen,0);
1748
1749 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1750 if (verbose || g_debugMode) {
1751 PrintAndLog("NRZ demoded bitstream:");
1752 // Now output the bitstream to the scrollback by line of 16 bits
1753 printDemodBuff();
1754 }
1755 return 1;
1756 }
1757
1758 int CmdNRZrawDemod(const char *Cmd)
1759 {
1760 char cmdp = param_getchar(Cmd, 0);
1761 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1762 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1763 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1764 PrintAndLog(" <invert>, 1 for invert output");
1765 PrintAndLog(" [set maximum allowed errors], default = 100.");
1766 PrintAndLog("");
1767 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1768 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1769 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1770 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1771 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");
1772 return 0;
1773 }
1774 return NRZrawDemod(Cmd, TRUE);
1775 }
1776
1777 // by marshmellow
1778 // takes 3 arguments - clock, invert, maxErr as integers
1779 // attempts to demodulate psk only
1780 // prints binary found and saves in demodbuffer for further commands
1781 int CmdPSK1rawDemod(const char *Cmd)
1782 {
1783 int ans;
1784 char cmdp = param_getchar(Cmd, 0);
1785 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1786 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1787 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1788 PrintAndLog(" <invert>, 1 for invert output");
1789 PrintAndLog(" [set maximum allowed errors], default = 100.");
1790 PrintAndLog("");
1791 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1792 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1793 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1794 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1795 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");
1796 return 0;
1797 }
1798 ans = PSKDemod(Cmd, TRUE);
1799 //output
1800 if (!ans){
1801 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1802 return 0;
1803 }
1804
1805 PrintAndLog("PSK1 demoded bitstream:");
1806 // Now output the bitstream to the scrollback by line of 16 bits
1807 printDemodBuff();
1808 return 1;
1809 }
1810
1811 // by marshmellow
1812 // takes same args as cmdpsk1rawdemod
1813 int CmdPSK2rawDemod(const char *Cmd)
1814 {
1815 int ans=0;
1816 char cmdp = param_getchar(Cmd, 0);
1817 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1818 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1819 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1820 PrintAndLog(" <invert>, 1 for invert output");
1821 PrintAndLog(" [set maximum allowed errors], default = 100.");
1822 PrintAndLog("");
1823 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1824 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1825 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1826 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1827 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");
1828 return 0;
1829 }
1830 ans=PSKDemod(Cmd, TRUE);
1831 if (!ans){
1832 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1833 return 0;
1834 }
1835 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1836 PrintAndLog("PSK2 demoded bitstream:");
1837 // Now output the bitstream to the scrollback by line of 16 bits
1838 printDemodBuff();
1839 return 1;
1840 }
1841
1842 // by marshmellow - combines all raw demod functions into one menu command
1843 int CmdRawDemod(const char *Cmd)
1844 {
1845 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1846
1847 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1848 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1849 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1850 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1851 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1852 PrintAndLog(" <options> see specific modulation help for optional parameters");
1853 PrintAndLog("");
1854 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1855 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1856 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1857 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1858 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1859 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1860 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1861 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1862 return 0;
1863 }
1864 char cmdp2 = Cmd[1];
1865 int ans = 0;
1866 if (cmdp == 'f' && cmdp2 == 's'){
1867 ans = CmdFSKrawdemod(Cmd+2);
1868 } else if(cmdp == 'a' && cmdp2 == 'b'){
1869 ans = Cmdaskbiphdemod(Cmd+2);
1870 } else if(cmdp == 'a' && cmdp2 == 'm'){
1871 ans = Cmdaskmandemod(Cmd+2);
1872 } else if(cmdp == 'a' && cmdp2 == 'r'){
1873 ans = Cmdaskrawdemod(Cmd+2);
1874 } else if(cmdp == 'n' && cmdp2 == 'r'){
1875 ans = CmdNRZrawDemod(Cmd+2);
1876 } else if(cmdp == 'p' && cmdp2 == '1'){
1877 ans = CmdPSK1rawDemod(Cmd+2);
1878 } else if(cmdp == 'p' && cmdp2 == '2'){
1879 ans = CmdPSK2rawDemod(Cmd+2);
1880 } else {
1881 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1882 }
1883 return ans;
1884 }
1885
1886 int CmdGrid(const char *Cmd)
1887 {
1888 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1889 PlotGridXdefault= PlotGridX;
1890 PlotGridYdefault= PlotGridY;
1891 RepaintGraphWindow();
1892 return 0;
1893 }
1894
1895 int CmdHexsamples(const char *Cmd)
1896 {
1897 int i, j;
1898 int requested = 0;
1899 int offset = 0;
1900 char string_buf[25];
1901 char* string_ptr = string_buf;
1902 uint8_t got[BIGBUF_SIZE];
1903
1904 sscanf(Cmd, "%i %i", &requested, &offset);
1905
1906 /* if no args send something */
1907 if (requested == 0) {
1908 requested = 8;
1909 }
1910 if (offset + requested > sizeof(got)) {
1911 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1912 return 0;
1913 }
1914
1915 GetFromBigBuf(got,requested,offset);
1916 WaitForResponse(CMD_ACK,NULL);
1917
1918 i = 0;
1919 for (j = 0; j < requested; j++) {
1920 i++;
1921 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1922 if (i == 8) {
1923 *(string_ptr - 1) = '\0'; // remove the trailing space
1924 PrintAndLog("%s", string_buf);
1925 string_buf[0] = '\0';
1926 string_ptr = string_buf;
1927 i = 0;
1928 }
1929 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1930 *(string_ptr - 1) = '\0';
1931 PrintAndLog("%s", string_buf);
1932 string_buf[0] = '\0';
1933 }
1934 }
1935 return 0;
1936 }
1937
1938 int CmdHide(const char *Cmd)
1939 {
1940 HideGraphWindow();
1941 return 0;
1942 }
1943
1944 //zero mean GraphBuffer
1945 int CmdHpf(const char *Cmd)
1946 {
1947 int i;
1948 int accum = 0;
1949
1950 for (i = 10; i < GraphTraceLen; ++i)
1951 accum += GraphBuffer[i];
1952 accum /= (GraphTraceLen - 10);
1953 for (i = 0; i < GraphTraceLen; ++i)
1954 GraphBuffer[i] -= accum;
1955
1956 RepaintGraphWindow();
1957 return 0;
1958 }
1959
1960 uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
1961 {
1962 int i;
1963 uint8_t val = 0;
1964 for(i =0 ; i < bits_per_sample; i++)
1965 {
1966 val |= (headBit(b) << (7-i));
1967 }
1968 return val;
1969 }
1970
1971 int getSamples(const char *Cmd, bool silent)
1972 {
1973 //If we get all but the last byte in bigbuf,
1974 // we don't have to worry about remaining trash
1975 // in the last byte in case the bits-per-sample
1976 // does not line up on byte boundaries
1977
1978 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1979
1980 int n = strtol(Cmd, NULL, 0);
1981
1982 if (n == 0 || n > sizeof(got))
1983 n = sizeof(got);
1984
1985 PrintAndLog("Reading %d bytes from device memory\n", n);
1986 GetFromBigBuf(got,n,0);
1987 PrintAndLog("Data fetched");
1988 UsbCommand response;
1989 WaitForResponse(CMD_ACK, &response);
1990 uint8_t bits_per_sample = 8;
1991
1992 //Old devices without this feature would send 0 at arg[0]
1993 if(response.arg[0] > 0)
1994 {
1995 sample_config *sc = (sample_config *) response.d.asBytes;
1996 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1997 , sc->decimation);
1998 bits_per_sample = sc->bits_per_sample;
1999 }
2000 if(bits_per_sample < 8)
2001 {
2002 PrintAndLog("Unpacking...");
2003 BitstreamIn bout = { got, bits_per_sample * n, 0};
2004 int j =0;
2005 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2006 uint8_t sample = getByte(bits_per_sample, &bout);
2007 GraphBuffer[j] = ((int) sample )- 128;
2008 }
2009 GraphTraceLen = j;
2010 PrintAndLog("Unpacked %d samples" , j );
2011 }else
2012 {
2013 for (int j = 0; j < n; j++) {
2014 GraphBuffer[j] = ((int)got[j]) - 128;
2015 }
2016 GraphTraceLen = n;
2017 }
2018
2019 RepaintGraphWindow();
2020 return 0;
2021 }
2022
2023 int CmdSamples(const char *Cmd)
2024 {
2025 return getSamples(Cmd, false);
2026 }
2027
2028 int CmdTuneSamples(const char *Cmd)
2029 {
2030 int timeout = 0;
2031 printf("\nMeasuring antenna characteristics, please wait...");
2032
2033 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2034 SendCommand(&c);
2035
2036 UsbCommand resp;
2037 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2038 timeout++;
2039 printf(".");
2040 if (timeout > 7) {
2041 PrintAndLog("\nNo response from Proxmark. Aborting...");
2042 return 1;
2043 }
2044 }
2045
2046 int peakv, peakf;
2047 int vLf125, vLf134, vHf;
2048 vLf125 = resp.arg[0] & 0xffff;
2049 vLf134 = resp.arg[0] >> 16;
2050 vHf = resp.arg[1] & 0xffff;;
2051 peakf = resp.arg[2] & 0xffff;
2052 peakv = resp.arg[2] >> 16;
2053 PrintAndLog("");
2054 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2055 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2056 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2057 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2058
2059 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2060 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2061 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2062 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2063
2064 if (peakv < LF_UNUSABLE_V)
2065 PrintAndLog("# Your LF antenna is unusable.");
2066 else if (peakv < LF_MARGINAL_V)
2067 PrintAndLog("# Your LF antenna is marginal.");
2068 if (vHf < HF_UNUSABLE_V)
2069 PrintAndLog("# Your HF antenna is unusable.");
2070 else if (vHf < HF_MARGINAL_V)
2071 PrintAndLog("# Your HF antenna is marginal.");
2072
2073 if (peakv >= LF_UNUSABLE_V) {
2074 for (int i = 0; i < 256; i++) {
2075 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2076 }
2077 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2078 PrintAndLog("\n");
2079 GraphTraceLen = 256;
2080 ShowGraphWindow();
2081 RepaintGraphWindow();
2082 }
2083
2084 return 0;
2085 }
2086
2087
2088 int CmdLoad(const char *Cmd)
2089 {
2090 char filename[FILE_PATH_SIZE] = {0x00};
2091 int len = 0;
2092
2093 len = strlen(Cmd);
2094 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2095 memcpy(filename, Cmd, len);
2096
2097 FILE *f = fopen(filename, "r");
2098 if (!f) {
2099 PrintAndLog("couldn't open '%s'", filename);
2100 return 0;
2101 }
2102
2103 GraphTraceLen = 0;
2104 char line[80];
2105 while (fgets(line, sizeof (line), f)) {
2106 GraphBuffer[GraphTraceLen] = atoi(line);
2107 GraphTraceLen++;
2108 }
2109 fclose(f);
2110 PrintAndLog("loaded %d samples", GraphTraceLen);
2111 RepaintGraphWindow();
2112 return 0;
2113 }
2114
2115 int CmdLtrim(const char *Cmd)
2116 {
2117 int ds = atoi(Cmd);
2118 if (GraphTraceLen<=0) return 0;
2119 for (int i = ds; i < GraphTraceLen; ++i)
2120 GraphBuffer[i-ds] = GraphBuffer[i];
2121 GraphTraceLen -= ds;
2122
2123 RepaintGraphWindow();
2124 return 0;
2125 }
2126
2127 // trim graph to input argument length
2128 int CmdRtrim(const char *Cmd)
2129 {
2130 int ds = atoi(Cmd);
2131
2132 GraphTraceLen = ds;
2133
2134 RepaintGraphWindow();
2135 return 0;
2136 }
2137
2138 int CmdNorm(const char *Cmd)
2139 {
2140 int i;
2141 int max = INT_MIN, min = INT_MAX;
2142
2143 for (i = 10; i < GraphTraceLen; ++i) {
2144 if (GraphBuffer[i] > max)
2145 max = GraphBuffer[i];
2146 if (GraphBuffer[i] < min)
2147 min = GraphBuffer[i];
2148 }
2149
2150 if (max != min) {
2151 for (i = 0; i < GraphTraceLen; ++i) {
2152 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2153 (max - min);
2154 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2155 }
2156 }
2157 RepaintGraphWindow();
2158 return 0;
2159 }
2160
2161 int CmdPlot(const char *Cmd)
2162 {
2163 ShowGraphWindow();
2164 return 0;
2165 }
2166
2167 int CmdSave(const char *Cmd)
2168 {
2169 char filename[FILE_PATH_SIZE] = {0x00};
2170 int len = 0;
2171
2172 len = strlen(Cmd);
2173 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2174 memcpy(filename, Cmd, len);
2175
2176
2177 FILE *f = fopen(filename, "w");
2178 if(!f) {
2179 PrintAndLog("couldn't open '%s'", filename);
2180 return 0;
2181 }
2182 int i;
2183 for (i = 0; i < GraphTraceLen; i++) {
2184 fprintf(f, "%d\n", GraphBuffer[i]);
2185 }
2186 fclose(f);
2187 PrintAndLog("saved to '%s'", Cmd);
2188 return 0;
2189 }
2190
2191 int CmdScale(const char *Cmd)
2192 {
2193 CursorScaleFactor = atoi(Cmd);
2194 if (CursorScaleFactor == 0) {
2195 PrintAndLog("bad, can't have zero scale");
2196 CursorScaleFactor = 1;
2197 }
2198 RepaintGraphWindow();
2199 return 0;
2200 }
2201
2202 int CmdDirectionalThreshold(const char *Cmd)
2203 {
2204 int8_t upThres = param_get8(Cmd, 0);
2205 int8_t downThres = param_get8(Cmd, 1);
2206
2207 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2208
2209 int lastValue = GraphBuffer[0];
2210 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2211
2212 for (int i = 1; i < GraphTraceLen; ++i) {
2213 // Apply first threshold to samples heading up
2214 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2215 {
2216 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2217 GraphBuffer[i] = 1;
2218 }
2219 // Apply second threshold to samples heading down
2220 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2221 {
2222 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2223 GraphBuffer[i] = -1;
2224 }
2225 else
2226 {
2227 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2228 GraphBuffer[i] = GraphBuffer[i-1];
2229
2230 }
2231 }
2232 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2233 RepaintGraphWindow();
2234 return 0;
2235 }
2236
2237 int CmdZerocrossings(const char *Cmd)
2238 {
2239 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2240 CmdHpf("");
2241
2242 int sign = 1;
2243 int zc = 0;
2244 int lastZc = 0;
2245
2246 for (int i = 0; i < GraphTraceLen; ++i) {
2247 if (GraphBuffer[i] * sign >= 0) {
2248 // No change in sign, reproduce the previous sample count.
2249 zc++;
2250 GraphBuffer[i] = lastZc;
2251 } else {
2252 // Change in sign, reset the sample count.
2253 sign = -sign;
2254 GraphBuffer[i] = lastZc;
2255 if (sign > 0) {
2256 lastZc = zc;
2257 zc = 0;
2258 }
2259 }
2260 }
2261
2262 RepaintGraphWindow();
2263 return 0;
2264 }
2265
2266 int usage_data_bin2hex(){
2267 PrintAndLog("Usage: data bin2hex <binary_digits>");
2268 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2269 return 0;
2270 }
2271
2272 /**
2273 * @brief Utility for conversion via cmdline.
2274 * @param Cmd
2275 * @return
2276 */
2277 int Cmdbin2hex(const char *Cmd)
2278 {
2279 int bg =0, en =0;
2280 if(param_getptr(Cmd, &bg, &en, 0))
2281 {
2282 return usage_data_bin2hex();
2283 }
2284 //Number of digits supplied as argument
2285 size_t length = en - bg +1;
2286 size_t bytelen = (length+7) / 8;
2287 uint8_t* arr = (uint8_t *) malloc(bytelen);
2288 memset(arr, 0, bytelen);
2289 BitstreamOut bout = { arr, 0, 0 };
2290
2291 for(; bg <= en ;bg++)
2292 {
2293 char c = Cmd[bg];
2294 if( c == '1') pushBit(&bout, 1);
2295 else if( c == '0') pushBit(&bout, 0);
2296 else PrintAndLog("Ignoring '%c'", c);
2297 }
2298
2299 if(bout.numbits % 8 != 0)
2300 {
2301 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2302 }
2303
2304 //Uses printf instead of PrintAndLog since the latter
2305 // adds linebreaks to each printout - this way was more convenient since we don't have to
2306 // allocate a string and write to that first...
2307 for(size_t x = 0; x < bytelen ; x++)
2308 {
2309 printf("%02X", arr[x]);
2310 }
2311 printf("\n");
2312 free(arr);
2313 return 0;
2314 }
2315
2316 int usage_data_hex2bin(){
2317
2318 PrintAndLog("Usage: data bin2hex <binary_digits>");
2319 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2320 return 0;
2321
2322 }
2323
2324 int Cmdhex2bin(const char *Cmd)
2325 {
2326 int bg =0, en =0;
2327 if(param_getptr(Cmd, &bg, &en, 0))
2328 {
2329 return usage_data_hex2bin();
2330 }
2331
2332
2333 while(bg <= en )
2334 {
2335 char x = Cmd[bg++];
2336 // capitalize
2337 if (x >= 'a' && x <= 'f')
2338 x -= 32;
2339 // convert to numeric value
2340 if (x >= '0' && x <= '9')
2341 x -= '0';
2342 else if (x >= 'A' && x <= 'F')
2343 x -= 'A' - 10;
2344 else
2345 continue;
2346
2347 //Uses printf instead of PrintAndLog since the latter
2348 // adds linebreaks to each printout - this way was more convenient since we don't have to
2349 // allocate a string and write to that first...
2350
2351 for(int i= 0 ; i < 4 ; ++i)
2352 printf("%d",(x >> (3 - i)) & 1);
2353 }
2354 printf("\n");
2355
2356 return 0;
2357 }
2358
2359 static command_t CommandTable[] =
2360 {
2361 {"help", CmdHelp, 1, "This help"},
2362 {"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)"},
2363 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2364 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2365 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"},
2366 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2367 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2368 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2369 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2370 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2371 {"dec", CmdDec, 1, "Decimate samples"},
2372 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2373 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2374 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2375 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2376 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2377 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2378 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2379 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2380 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2381 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2382 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2383 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2384 {"hide", CmdHide, 1, "Hide graph window"},
2385 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2386 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2387 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2388 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2389 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2390 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2391 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2392 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2393 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2394 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2395 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2396 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2397 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2398 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2399 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2400 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2401 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2402 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2403 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2404 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2405 {NULL, NULL, 0, NULL}
2406 };
2407
2408 int CmdData(const char *Cmd)
2409 {
2410 CmdsParse(CommandTable, Cmd);
2411 return 0;
2412 }
2413
2414 int CmdHelp(const char *Cmd)
2415 {
2416 CmdsHelp(CommandTable);
2417 return 0;
2418 }
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