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1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Data and Graph commands
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <limits.h>
15 #include "proxmark3.h"
16 #include "data.h"
17 #include "ui.h"
18 #include "graph.h"
19 #include "cmdparser.h"
20 #include "util.h"
21 #include "cmdmain.h"
22 #include "cmddata.h"
23 #include "lfdemod.h"
24 #include "usb_cmd.h"
25 #include "crc.h"
26 #include "crc16.h"
27 #include "loclass/cipherutils.h"
28
29 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
30 uint8_t g_debugMode=0;
31 size_t DemodBufferLen=0;
32 static int CmdHelp(const char *Cmd);
33
34 //set the demod buffer with given array of binary (one bit per byte)
35 //by marshmellow
36 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
37 {
38 if (buff == NULL)
39 return;
40
41 if ( size >= MAX_DEMOD_BUF_LEN)
42 size = MAX_DEMOD_BUF_LEN;
43
44 size_t i = 0;
45 for (; i < size; i++){
46 DemodBuffer[i]=buff[startIdx++];
47 }
48 DemodBufferLen=size;
49 return;
50 }
51
52 int CmdSetDebugMode(const char *Cmd)
53 {
54 int demod=0;
55 sscanf(Cmd, "%i", &demod);
56 g_debugMode=(uint8_t)demod;
57 return 1;
58 }
59
60 int usage_data_printdemodbuf(){
61 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
62 PrintAndLog("Options: ");
63 PrintAndLog(" h This help");
64 PrintAndLog(" x output in hex (omit for binary output)");
65 PrintAndLog(" o <offset> enter offset in # of bits");
66 return 0;
67 }
68
69 //by marshmellow
70 void printDemodBuff(void)
71 {
72 int bitLen = DemodBufferLen;
73 if (bitLen<1) {
74 PrintAndLog("no bits found in demod buffer");
75 return;
76 }
77 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
78
79 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
80 PrintAndLog("%s",bin);
81
82 return;
83 }
84
85 int CmdPrintDemodBuff(const char *Cmd)
86 {
87 char hex[512]={0x00};
88 bool hexMode = false;
89 bool errors = false;
90 uint8_t offset = 0;
91 char cmdp = 0;
92 while(param_getchar(Cmd, cmdp) != 0x00)
93 {
94 switch(param_getchar(Cmd, cmdp))
95 {
96 case 'h':
97 case 'H':
98 return usage_data_printdemodbuf();
99 case 'x':
100 case 'X':
101 hexMode = true;
102 cmdp++;
103 break;
104 case 'o':
105 case 'O':
106 offset = param_get8(Cmd, cmdp+1);
107 if (!offset) errors = true;
108 cmdp += 2;
109 break;
110 default:
111 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
112 errors = true;
113 break;
114 }
115 if(errors) break;
116 }
117 //Validations
118 if(errors) return usage_data_printdemodbuf();
119
120 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
121
122 if (hexMode){
123 char *buf = (char *) (DemodBuffer + offset);
124 numBits = binarraytohex(hex, buf, numBits);
125 if (numBits==0) return 0;
126 PrintAndLog("DemodBuffer: %s",hex);
127 } else {
128 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
129 }
130 return 1;
131 }
132
133 //by marshmellow
134 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
135 int CmdGetBitStream(const char *Cmd)
136 {
137 int i;
138 CmdHpf(Cmd);
139 for (i = 0; i < GraphTraceLen; i++) {
140 if (GraphBuffer[i] >= 1) {
141 GraphBuffer[i] = 1;
142 } else {
143 GraphBuffer[i] = 0;
144 }
145 }
146 RepaintGraphWindow();
147 return 0;
148 }
149
150 //by marshmellow
151 //print 64 bit EM410x ID in multiple formats
152 void printEM410x(uint32_t hi, uint64_t id)
153 {
154 if (id || hi){
155 uint64_t iii=1;
156 uint64_t id2lo=0;
157 uint32_t ii=0;
158 uint32_t i=0;
159 for (ii=5; ii>0;ii--){
160 for (i=0;i<8;i++){
161 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
162 }
163 }
164 if (hi){
165 //output 88 bit em id
166 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
167 } else{
168 //output 40 bit em id
169 PrintAndLog("\nEM TAG ID : %010llX", id);
170 PrintAndLog("Unique TAG ID : %010llX", id2lo);
171 PrintAndLog("\nPossible de-scramble patterns");
172 PrintAndLog("HoneyWell IdentKey {");
173 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
174 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
175 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
176 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
177 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
179 PrintAndLog("DEZ 14/IK2 : %014lld",id);
180 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
181 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
182 (id2lo & 0xf000000000) >> 36,
183 (id2lo & 0x0f00000000) >> 32,
184 (id2lo & 0x00f0000000) >> 28,
185 (id2lo & 0x000f000000) >> 24,
186 (id2lo & 0x0000f00000) >> 20,
187 (id2lo & 0x00000f0000) >> 16,
188 (id2lo & 0x000000f000) >> 12,
189 (id2lo & 0x0000000f00) >> 8,
190 (id2lo & 0x00000000f0) >> 4,
191 (id2lo & 0x000000000f)
192 );
193 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
194 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
195 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
196
197 uint32_t p1id = (id & 0xFFFFFF);
198 uint8_t arr[32] = {0x00};
199 int i =0;
200 int j = 23;
201 for (; i < 24; ++i, --j ){
202 arr[i] = (p1id >> i) & 1;
203 }
204
205 uint32_t p1 = 0;
206
207 p1 |= arr[23] << 21;
208 p1 |= arr[22] << 23;
209 p1 |= arr[21] << 20;
210 p1 |= arr[20] << 22;
211
212 p1 |= arr[19] << 18;
213 p1 |= arr[18] << 16;
214 p1 |= arr[17] << 19;
215 p1 |= arr[16] << 17;
216
217 p1 |= arr[15] << 13;
218 p1 |= arr[14] << 15;
219 p1 |= arr[13] << 12;
220 p1 |= arr[12] << 14;
221
222 p1 |= arr[11] << 6;
223 p1 |= arr[10] << 2;
224 p1 |= arr[9] << 7;
225 p1 |= arr[8] << 1;
226
227 p1 |= arr[7] << 0;
228 p1 |= arr[6] << 8;
229 p1 |= arr[5] << 11;
230 p1 |= arr[4] << 3;
231
232 p1 |= arr[3] << 10;
233 p1 |= arr[2] << 4;
234 p1 |= arr[1] << 5;
235 p1 |= arr[0] << 9;
236 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
237
238 uint16_t sebury1 = id & 0xFFFF;
239 uint8_t sebury2 = (id >> 16) & 0x7F;
240 uint32_t sebury3 = id & 0x7FFFFF;
241 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
242 }
243 }
244 return;
245 }
246
247 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
248 {
249 size_t idx = 0;
250 size_t BitLen = DemodBufferLen;
251 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
252 memcpy(BitStream, DemodBuffer, BitLen);
253 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
254 //set GraphBuffer for clone or sim command
255 setDemodBuf(BitStream, BitLen, idx);
256 if (g_debugMode){
257 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
258 printDemodBuff();
259 }
260 if (verbose){
261 PrintAndLog("EM410x pattern found: ");
262 printEM410x(*hi, *lo);
263 }
264 return 1;
265 }
266 return 0;
267 }
268
269 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
270 {
271 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
272 return AskEm410xDecode(verbose, hi, lo);
273 }
274
275 //by marshmellow
276 //takes 3 arguments - clock, invert and maxErr as integers
277 //attempts to demodulate ask while decoding manchester
278 //prints binary found and saves in graphbuffer for further commands
279 int CmdAskEM410xDemod(const char *Cmd)
280 {
281 char cmdp = param_getchar(Cmd, 0);
282 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
283 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
284 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
285 PrintAndLog(" <invert>, 1 for invert output");
286 PrintAndLog(" [set maximum allowed errors], default = 100.");
287 PrintAndLog("");
288 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
289 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
290 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
291 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
292 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");
293 return 0;
294 }
295 uint64_t lo = 0;
296 uint32_t hi = 0;
297 return AskEm410xDemod(Cmd, &hi, &lo, true);
298 }
299
300 //by marshmellow
301 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
302 // (amp may not be needed anymore)
303 //verbose will print results and demoding messages
304 //emSearch will auto search for EM410x format in bitstream
305 //askType switches decode: ask/raw = 0, ask/manchester = 1
306 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
307 {
308 int invert=0;
309 int clk=0;
310 int maxErr=100;
311 int maxLen=0;
312 uint8_t askAmp = 0;
313 char amp = param_getchar(Cmd, 0);
314 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
315 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
316 if (!maxLen) maxLen = 512*64;
317 if (invert != 0 && invert != 1) {
318 PrintAndLog("Invalid argument: %s", Cmd);
319 return 0;
320 }
321 if (clk==1){
322 invert=1;
323 clk=0;
324 }
325 if (amp == 'a' || amp == 'A') askAmp=1;
326 size_t BitLen = getFromGraphBuf(BitStream);
327 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
328 if (BitLen<255) return 0;
329 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
330
331 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
332 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
333 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
334 return 0;
335 }
336 if (errCnt>maxErr){
337 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
338 return 0;
339 }
340 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
341
342 //output
343 setDemodBuf(BitStream,BitLen,0);
344 if (verbose || g_debugMode){
345 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
346 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
347 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
348 // Now output the bitstream to the scrollback by line of 16 bits
349 printDemodBuff();
350
351 }
352 uint64_t lo = 0;
353 uint32_t hi = 0;
354 if (emSearch){
355 AskEm410xDecode(true, &hi, &lo);
356 }
357 return 1;
358 }
359
360 //by marshmellow
361 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
362 //attempts to demodulate ask while decoding manchester
363 //prints binary found and saves in graphbuffer for further commands
364 int Cmdaskmandemod(const char *Cmd)
365 {
366 char cmdp = param_getchar(Cmd, 0);
367 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
368 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
369 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
370 PrintAndLog(" <invert>, 1 to invert output");
371 PrintAndLog(" [set maximum allowed errors], default = 100");
372 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
373 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
374 PrintAndLog("");
375 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
376 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
377 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
378 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
379 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");
380 return 0;
381 }
382 return ASKDemod(Cmd, TRUE, TRUE, 1);
383 }
384
385 //by marshmellow
386 //manchester decode
387 //stricktly take 10 and 01 and convert to 0 and 1
388 int Cmdmandecoderaw(const char *Cmd)
389 {
390 int i =0;
391 int errCnt=0;
392 size_t size=0;
393 int invert=0;
394 int maxErr = 20;
395 char cmdp = param_getchar(Cmd, 0);
396 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
397 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
398 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
399 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
400 PrintAndLog(" [invert] invert output");
401 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
402 PrintAndLog("");
403 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
404 return 0;
405 }
406 if (DemodBufferLen==0) return 0;
407 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
408 int high=0,low=0;
409 for (;i<DemodBufferLen;++i){
410 if (DemodBuffer[i]>high) high=DemodBuffer[i];
411 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
412 BitStream[i]=DemodBuffer[i];
413 }
414 if (high>7 || low <0 ){
415 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
416 return 0;
417 }
418
419 sscanf(Cmd, "%i %i", &invert, &maxErr);
420 size=i;
421 errCnt=manrawdecode(BitStream, &size, invert);
422 if (errCnt>=maxErr){
423 PrintAndLog("Too many errors: %d",errCnt);
424 return 0;
425 }
426 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
427 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
428 if (errCnt==0){
429 uint64_t id = 0;
430 uint32_t hi = 0;
431 size_t idx=0;
432 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
433 //need to adjust to set bitstream back to manchester encoded data
434 //setDemodBuf(BitStream, size, idx);
435
436 printEM410x(hi, id);
437 }
438 }
439 return 1;
440 }
441
442 //by marshmellow
443 //biphase decode
444 //take 01 or 10 = 0 and 11 or 00 = 1
445 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
446 // and "invert" default = 0 if 1 it will invert output
447 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
448 int CmdBiphaseDecodeRaw(const char *Cmd)
449 {
450 size_t size=0;
451 int offset=0, invert=0, maxErr=20, errCnt=0;
452 char cmdp = param_getchar(Cmd, 0);
453 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
454 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
455 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
456 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
457 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
458 PrintAndLog("");
459 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
460 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
461 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
462 PrintAndLog("");
463 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
464 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
465 return 0;
466 }
467 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
468 if (DemodBufferLen==0){
469 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
470 return 0;
471 }
472 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
473 memcpy(BitStream, DemodBuffer, DemodBufferLen);
474 size = DemodBufferLen;
475 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
476 if (errCnt<0){
477 PrintAndLog("Error during decode:%d", errCnt);
478 return 0;
479 }
480 if (errCnt>maxErr){
481 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
482 return 0;
483 }
484
485 if (errCnt>0){
486 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
487 }
488 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
489 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
490
491 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
492 return 1;
493 }
494
495 //by marshmellow
496 // - ASK Demod then Biphase decode GraphBuffer samples
497 int ASKbiphaseDemod(const char *Cmd, bool verbose)
498 {
499 //ask raw demod GraphBuffer first
500 int offset=0, clk=0, invert=0, maxErr=0;
501 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
502
503 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
504 size_t size = getFromGraphBuf(BitStream);
505 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
506 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
507 if ( errCnt < 0 || errCnt > maxErr ) {
508 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
509 return 0;
510 }
511
512 //attempt to Biphase decode BitStream
513 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
514 if (errCnt < 0){
515 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
516 return 0;
517 }
518 if (errCnt > maxErr) {
519 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
520 return 0;
521 }
522 //success set DemodBuffer and return
523 setDemodBuf(BitStream, size, 0);
524 if (g_debugMode || verbose){
525 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
526 printDemodBuff();
527 }
528 return 1;
529 }
530 //by marshmellow - see ASKbiphaseDemod
531 int Cmdaskbiphdemod(const char *Cmd)
532 {
533 char cmdp = param_getchar(Cmd, 0);
534 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
535 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
536 PrintAndLog(" [offset], offset to begin biphase, default=0");
537 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
538 PrintAndLog(" <invert>, 1 to invert output");
539 PrintAndLog(" [set maximum allowed errors], default = 100");
540 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
541 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
542 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
543 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
544 PrintAndLog(" NOTE: any other arg must have previous args set to work");
545 PrintAndLog("");
546 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
547 PrintAndLog("");
548 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
549 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
550 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
551 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
552 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
553 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");
554 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");
555 return 0;
556 }
557 return ASKbiphaseDemod(Cmd, TRUE);
558 }
559
560 //by marshmellow
561 //attempts to demodulate and identify a G_Prox_II verex/chubb card
562 //WARNING: if it fails during some points it will destroy the DemodBuffer data
563 // but will leave the GraphBuffer intact.
564 //if successful it will push askraw data back to demod buffer ready for emulation
565 int CmdG_Prox_II_Demod(const char *Cmd)
566 {
567 if (!ASKbiphaseDemod(Cmd, FALSE)){
568 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
569 return 0;
570 }
571 size_t size = DemodBufferLen;
572 //call lfdemod.c demod for gProxII
573 int ans = gProxII_Demod(DemodBuffer, &size);
574 if (ans < 0){
575 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
576 return 0;
577 }
578 //got a good demod
579 uint32_t ByteStream[65] = {0x00};
580 uint8_t xorKey=0;
581 uint8_t keyCnt=0;
582 uint8_t bitCnt=0;
583 uint8_t ByteCnt=0;
584 size_t startIdx = ans + 6; //start after preamble
585 for (size_t idx = 0; idx<size-6; idx++){
586 if ((idx+1) % 5 == 0){
587 //spacer bit - should be 0
588 if (DemodBuffer[startIdx+idx] != 0) {
589 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
590 return 0;
591 }
592 continue;
593 }
594 if (keyCnt<8){ //lsb first
595 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
596 keyCnt++;
597 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
598 continue;
599 }
600 //lsb first
601 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
602 bitCnt++;
603 if (bitCnt % 8 == 0){
604 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
605 bitCnt=0;
606 ByteCnt++;
607 }
608 }
609 for (uint8_t i = 0; i < ByteCnt; i++){
610 ByteStream[i] ^= xorKey; //xor
611 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
612 }
613 //now ByteStream contains 64 bytes of decrypted raw tag data
614 //
615 uint8_t fmtLen = ByteStream[0]>>2;
616 uint32_t FC = 0;
617 uint32_t Card = 0;
618 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
619 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
620 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
621
622 if (fmtLen==36){
623 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
624 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
625 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
626 } else if(fmtLen==26){
627 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
628 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
629 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
630 } else {
631 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
632 }
633 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
634 setDemodBuf(DemodBuffer+ans, 96, 0);
635 return 1;
636 }
637
638 //by marshmellow
639 //see ASKDemod for what args are accepted
640 int CmdVikingDemod(const char *Cmd)
641 {
642 if (!ASKDemod(Cmd, false, false, 1)) {
643 if (g_debugMode) PrintAndLog("ASKDemod failed");
644 return 0;
645 }
646 size_t size = DemodBufferLen;
647 //call lfdemod.c demod for Viking
648 int ans = VikingDemod_AM(DemodBuffer, &size);
649 if (ans < 0) {
650 if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
651 return 0;
652 }
653 //got a good demod
654 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
655 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
656 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
657 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
658 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
659 PrintAndLog("Raw: %08X%08X", raw1,raw2);
660 setDemodBuf(DemodBuffer+ans, 64, 0);
661 return 1;
662 }
663
664 //by marshmellow - see ASKDemod
665 int Cmdaskrawdemod(const char *Cmd)
666 {
667 char cmdp = param_getchar(Cmd, 0);
668 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
669 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
670 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
671 PrintAndLog(" <invert>, 1 to invert output");
672 PrintAndLog(" [set maximum allowed errors], default = 100");
673 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
674 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
675 PrintAndLog("");
676 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
677 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
678 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
679 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
680 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
681 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");
682 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");
683 return 0;
684 }
685 return ASKDemod(Cmd, TRUE, FALSE, 0);
686 }
687
688 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
689 {
690 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
691 size_t Correlation = 0;
692 int maxSum = 0;
693 int lastMax = 0;
694 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
695 for (int i = 0; i < GraphTraceLen - window; ++i) {
696 int sum = 0;
697 for (int j = 0; j < window; ++j) {
698 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
699 }
700 CorrelBuffer[i] = sum;
701 if (sum >= maxSum-100 && sum <= maxSum+100){
702 //another max
703 Correlation = i-lastMax;
704 lastMax = i;
705 if (sum > maxSum) maxSum = sum;
706 } else if (sum > maxSum){
707 maxSum=sum;
708 lastMax = i;
709 }
710 }
711 if (Correlation==0){
712 //try again with wider margin
713 for (int i = 0; i < GraphTraceLen - window; i++){
714 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
715 //another max
716 Correlation = i-lastMax;
717 lastMax = i;
718 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
719 }
720 }
721 }
722 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
723
724 if (SaveGrph){
725 GraphTraceLen = GraphTraceLen - window;
726 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
727 RepaintGraphWindow();
728 }
729 return Correlation;
730 }
731
732 int usage_data_autocorr(void)
733 {
734 //print help
735 PrintAndLog("Usage: data autocorr [window] [g]");
736 PrintAndLog("Options: ");
737 PrintAndLog(" h This help");
738 PrintAndLog(" [window] window length for correlation - default = 4000");
739 PrintAndLog(" g save back to GraphBuffer (overwrite)");
740 return 0;
741 }
742
743 int CmdAutoCorr(const char *Cmd)
744 {
745 char cmdp = param_getchar(Cmd, 0);
746 if (cmdp == 'h' || cmdp == 'H')
747 return usage_data_autocorr();
748 int window = 4000; //set default
749 char grph=0;
750 bool updateGrph = FALSE;
751 sscanf(Cmd, "%i %c", &window, &grph);
752
753 if (window >= GraphTraceLen) {
754 PrintAndLog("window must be smaller than trace (%d samples)",
755 GraphTraceLen);
756 return 0;
757 }
758 if (grph == 'g') updateGrph=TRUE;
759 return AutoCorrelate(window, updateGrph, TRUE);
760 }
761
762 int CmdBitsamples(const char *Cmd)
763 {
764 int cnt = 0;
765 uint8_t got[12288];
766
767 GetFromBigBuf(got,sizeof(got),0);
768 WaitForResponse(CMD_ACK,NULL);
769
770 for (int j = 0; j < sizeof(got); j++) {
771 for (int k = 0; k < 8; k++) {
772 if(got[j] & (1 << (7 - k))) {
773 GraphBuffer[cnt++] = 1;
774 } else {
775 GraphBuffer[cnt++] = 0;
776 }
777 }
778 }
779 GraphTraceLen = cnt;
780 RepaintGraphWindow();
781 return 0;
782 }
783
784 int CmdBuffClear(const char *Cmd)
785 {
786 UsbCommand c = {CMD_BUFF_CLEAR};
787 SendCommand(&c);
788 ClearGraph(true);
789 return 0;
790 }
791
792 int CmdDec(const char *Cmd)
793 {
794 for (int i = 0; i < (GraphTraceLen / 2); ++i)
795 GraphBuffer[i] = GraphBuffer[i * 2];
796 GraphTraceLen /= 2;
797 PrintAndLog("decimated by 2");
798 RepaintGraphWindow();
799 return 0;
800 }
801 /**
802 * Undecimate - I'd call it 'interpolate', but we'll save that
803 * name until someone does an actual interpolation command, not just
804 * blindly repeating samples
805 * @param Cmd
806 * @return
807 */
808 int CmdUndec(const char *Cmd)
809 {
810 if(param_getchar(Cmd, 0) == 'h')
811 {
812 PrintAndLog("Usage: data undec [factor]");
813 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
814 PrintAndLog("Options: ");
815 PrintAndLog(" h This help");
816 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
817 PrintAndLog("Example: 'data undec 3'");
818 return 0;
819 }
820
821 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
822 //We have memory, don't we?
823 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
824 uint32_t g_index = 0 ,s_index = 0;
825 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
826 {
827 int count = 0;
828 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
829 swap[s_index+count] = GraphBuffer[g_index];
830 s_index+=count;
831 }
832
833 memcpy(GraphBuffer,swap, s_index * sizeof(int));
834 GraphTraceLen = s_index;
835 RepaintGraphWindow();
836 return 0;
837 }
838
839 //by marshmellow
840 //shift graph zero up or down based on input + or -
841 int CmdGraphShiftZero(const char *Cmd)
842 {
843
844 int shift=0;
845 //set options from parameters entered with the command
846 sscanf(Cmd, "%i", &shift);
847 int shiftedVal=0;
848 for(int i = 0; i<GraphTraceLen; i++){
849 shiftedVal=GraphBuffer[i]+shift;
850 if (shiftedVal>127)
851 shiftedVal=127;
852 else if (shiftedVal<-127)
853 shiftedVal=-127;
854 GraphBuffer[i]= shiftedVal;
855 }
856 CmdNorm("");
857 return 0;
858 }
859
860 //by marshmellow
861 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
862 //similar to dirtheshold, threshold commands
863 //takes a threshold length which is the measured length between two samples then determines an edge
864 int CmdAskEdgeDetect(const char *Cmd)
865 {
866 int thresLen = 25;
867 sscanf(Cmd, "%i", &thresLen);
868
869 for(int i = 1; i<GraphTraceLen; i++){
870 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
871 GraphBuffer[i-1] = 127;
872 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
873 GraphBuffer[i-1] = -127;
874 }
875 RepaintGraphWindow();
876 return 0;
877 }
878
879 /* Print our clock rate */
880 // uses data from graphbuffer
881 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
882 int CmdDetectClockRate(const char *Cmd)
883 {
884 char cmdp = param_getchar(Cmd, 0);
885 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
886 PrintAndLog("Usage: data detectclock [modulation] <clock>");
887 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
888 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
889 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
890 PrintAndLog("");
891 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
892 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
893 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
894 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
895 }
896 int ans=0;
897 if (cmdp == 'a'){
898 ans = GetAskClock(Cmd+1, true, false);
899 } else if (cmdp == 'f'){
900 ans = GetFskClock("", true, false);
901 } else if (cmdp == 'n'){
902 ans = GetNrzClock("", true, false);
903 } else if (cmdp == 'p'){
904 ans = GetPskClock("", true, false);
905 } else {
906 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
907 }
908 return ans;
909 }
910
911 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
912 {
913 char *fskType;
914 if (fchigh==10 && fclow==8){
915 if (invert) //fsk2a
916 fskType = "FSK2a";
917 else //fsk2
918 fskType = "FSK2";
919 } else if (fchigh == 8 && fclow == 5) {
920 if (invert)
921 fskType = "FSK1";
922 else
923 fskType = "FSK1a";
924 } else {
925 fskType = "FSK??";
926 }
927 return fskType;
928 }
929
930 //by marshmellow
931 //fsk raw demod and print binary
932 //takes 4 arguments - Clock, invert, fchigh, fclow
933 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
934 int FSKrawDemod(const char *Cmd, bool verbose)
935 {
936 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
937 //set defaults
938 int rfLen = 0;
939 int invert = 0;
940 int fchigh = 0;
941 int fclow = 0;
942
943 //set options from parameters entered with the command
944 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
945
946 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
947 if (rfLen==1){
948 invert = 1; //if invert option only is used
949 rfLen = 0;
950 }
951 }
952
953 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
954 size_t BitLen = getFromGraphBuf(BitStream);
955 if (BitLen==0) return 0;
956 //get field clock lengths
957 uint16_t fcs=0;
958 if (fchigh==0 || fclow == 0){
959 fcs = countFC(BitStream, BitLen, 1);
960 if (fcs==0){
961 fchigh=10;
962 fclow=8;
963 }else{
964 fchigh = (fcs >> 8) & 0xFF;
965 fclow = fcs & 0xFF;
966 }
967 }
968 //get bit clock length
969 if (rfLen==0){
970 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
971 if (rfLen == 0) rfLen = 50;
972 }
973 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
974 if (size>0){
975 setDemodBuf(BitStream,size,0);
976
977 // Now output the bitstream to the scrollback by line of 16 bits
978 if (verbose || g_debugMode) {
979 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
980 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
981 printDemodBuff();
982 }
983
984 return 1;
985 } else{
986 if (g_debugMode) PrintAndLog("no FSK data found");
987 }
988 return 0;
989 }
990
991 //by marshmellow
992 //fsk raw demod and print binary
993 //takes 4 arguments - Clock, invert, fchigh, fclow
994 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
995 int CmdFSKrawdemod(const char *Cmd)
996 {
997 char cmdp = param_getchar(Cmd, 0);
998 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
999 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1000 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1001 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1002 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1003 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1004 PrintAndLog("");
1005 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1006 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1007 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1008 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1009 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1010 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1011 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1012 return 0;
1013 }
1014 return FSKrawDemod(Cmd, TRUE);
1015 }
1016
1017 //by marshmellow (based on existing demod + holiman's refactor)
1018 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1019 //print full HID Prox ID and some bit format details if found
1020 int CmdFSKdemodHID(const char *Cmd)
1021 {
1022 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1023 uint32_t hi2=0, hi=0, lo=0;
1024
1025 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1026 size_t BitLen = getFromGraphBuf(BitStream);
1027 if (BitLen==0) return 0;
1028 //get binary from fsk wave
1029 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1030 if (idx<0){
1031 if (g_debugMode){
1032 if (idx==-1){
1033 PrintAndLog("DEBUG: Just Noise Detected");
1034 } else if (idx == -2) {
1035 PrintAndLog("DEBUG: Error demoding fsk");
1036 } else if (idx == -3) {
1037 PrintAndLog("DEBUG: Preamble not found");
1038 } else if (idx == -4) {
1039 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1040 } else {
1041 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1042 }
1043 }
1044 return 0;
1045 }
1046 if (hi2==0 && hi==0 && lo==0) {
1047 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1048 return 0;
1049 }
1050 if (hi2 != 0){ //extra large HID tags
1051 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1052 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1053 }
1054 else { //standard HID tags <38 bits
1055 uint8_t fmtLen = 0;
1056 uint32_t fc = 0;
1057 uint32_t cardnum = 0;
1058 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1059 uint32_t lo2=0;
1060 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1061 uint8_t idx3 = 1;
1062 while(lo2>1){ //find last bit set to 1 (format len bit)
1063 lo2=lo2>>1;
1064 idx3++;
1065 }
1066 fmtLen =idx3+19;
1067 fc =0;
1068 cardnum=0;
1069 if(fmtLen==26){
1070 cardnum = (lo>>1)&0xFFFF;
1071 fc = (lo>>17)&0xFF;
1072 }
1073 if(fmtLen==34){
1074 cardnum = (lo>>1)&0xFFFF;
1075 fc= ((hi&1)<<15)|(lo>>17);
1076 }
1077 if(fmtLen==35){
1078 cardnum = (lo>>1)&0xFFFFF;
1079 fc = ((hi&1)<<11)|(lo>>21);
1080 }
1081 }
1082 else { //if bit 38 is not set then 37 bit format is used
1083 fmtLen = 37;
1084 fc = 0;
1085 cardnum = 0;
1086 if(fmtLen == 37){
1087 cardnum = (lo>>1)&0x7FFFF;
1088 fc = ((hi&0xF)<<12)|(lo>>20);
1089 }
1090 }
1091 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1092 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1093 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1094 }
1095 setDemodBuf(BitStream,BitLen,idx);
1096 if (g_debugMode){
1097 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1098 printDemodBuff();
1099 }
1100 return 1;
1101 }
1102
1103 //by marshmellow
1104 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1105 //print full Paradox Prox ID and some bit format details if found
1106 int CmdFSKdemodParadox(const char *Cmd)
1107 {
1108 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1109 uint32_t hi2=0, hi=0, lo=0;
1110
1111 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1112 size_t BitLen = getFromGraphBuf(BitStream);
1113 if (BitLen==0) return 0;
1114 //get binary from fsk wave
1115 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1116 if (idx<0){
1117 if (g_debugMode){
1118 if (idx==-1){
1119 PrintAndLog("DEBUG: Just Noise Detected");
1120 } else if (idx == -2) {
1121 PrintAndLog("DEBUG: Error demoding fsk");
1122 } else if (idx == -3) {
1123 PrintAndLog("DEBUG: Preamble not found");
1124 } else if (idx == -4) {
1125 PrintAndLog("DEBUG: Error in Manchester data");
1126 } else {
1127 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1128 }
1129 }
1130 return 0;
1131 }
1132 if (hi2==0 && hi==0 && lo==0){
1133 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1134 return 0;
1135 }
1136 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1137 uint32_t cardnum = (lo>>10)&0xFFFF;
1138 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1139 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1140 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1141
1142 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1143 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1144 setDemodBuf(BitStream,BitLen,idx);
1145 if (g_debugMode){
1146 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1147 printDemodBuff();
1148 }
1149 return 1;
1150 }
1151
1152 //by marshmellow
1153 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1154 //print ioprox ID and some format details
1155 int CmdFSKdemodIO(const char *Cmd)
1156 {
1157 int idx=0;
1158 //something in graphbuffer?
1159 if (GraphTraceLen < 65) {
1160 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1161 return 0;
1162 }
1163 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1164 size_t BitLen = getFromGraphBuf(BitStream);
1165 if (BitLen==0) return 0;
1166
1167 //get binary from fsk wave
1168 idx = IOdemodFSK(BitStream,BitLen);
1169 if (idx<0){
1170 if (g_debugMode){
1171 if (idx==-1){
1172 PrintAndLog("DEBUG: Just Noise Detected");
1173 } else if (idx == -2) {
1174 PrintAndLog("DEBUG: not enough samples");
1175 } else if (idx == -3) {
1176 PrintAndLog("DEBUG: error during fskdemod");
1177 } else if (idx == -4) {
1178 PrintAndLog("DEBUG: Preamble not found");
1179 } else if (idx == -5) {
1180 PrintAndLog("DEBUG: Separator bits not found");
1181 } else {
1182 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1183 }
1184 }
1185 return 0;
1186 }
1187 if (idx==0){
1188 if (g_debugMode){
1189 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1190 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1191 }
1192 return 0;
1193 }
1194 //Index map
1195 //0 10 20 30 40 50 60
1196 //| | | | | | |
1197 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1198 //-----------------------------------------------------------------------------
1199 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1200 //
1201 //XSF(version)facility:codeone+codetwo (raw)
1202 //Handle the data
1203 if (idx+64>BitLen) {
1204 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1205 return 0;
1206 }
1207 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]);
1208 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]);
1209 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]);
1210 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]);
1211 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]);
1212 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]);
1213 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]);
1214
1215 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1216 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1217 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1218 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1219 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1220 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1221 uint16_t calccrc = 0;
1222
1223 for (uint8_t i=1; i<6; ++i){
1224 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1225 }
1226 calccrc &= 0xff;
1227 calccrc = 0xff - calccrc;
1228
1229 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1230
1231 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1232 setDemodBuf(BitStream,64,idx);
1233 if (g_debugMode){
1234 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1235 printDemodBuff();
1236 }
1237 return 1;
1238 }
1239
1240 //by marshmellow
1241 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1242 //print full AWID Prox ID and some bit format details if found
1243 int CmdFSKdemodAWID(const char *Cmd)
1244 {
1245 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1246 size_t size = getFromGraphBuf(BitStream);
1247 if (size==0) return 0;
1248
1249 //get binary from fsk wave
1250 int idx = AWIDdemodFSK(BitStream, &size);
1251 if (idx<=0){
1252 if (g_debugMode==1){
1253 if (idx == -1)
1254 PrintAndLog("DEBUG: Error - not enough samples");
1255 else if (idx == -2)
1256 PrintAndLog("DEBUG: Error - only noise found");
1257 else if (idx == -3)
1258 PrintAndLog("DEBUG: Error - problem during FSK demod");
1259 else if (idx == -4)
1260 PrintAndLog("DEBUG: Error - AWID preamble not found");
1261 else if (idx == -5)
1262 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1263 else
1264 PrintAndLog("DEBUG: Error %d",idx);
1265 }
1266 return 0;
1267 }
1268
1269 // Index map
1270 // 0 10 20 30 40 50 60
1271 // | | | | | | |
1272 // 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
1273 // -----------------------------------------------------------------------------
1274 // 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
1275 // 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
1276 // |---26 bit---| |-----117----||-------------142-------------|
1277 // b = format bit len, o = odd parity of last 3 bits
1278 // f = facility code, c = card number
1279 // w = wiegand parity
1280 // (26 bit format shown)
1281
1282 //get raw ID before removing parities
1283 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1284 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1285 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1286 setDemodBuf(BitStream,96,idx);
1287
1288 size = removeParity(BitStream, idx+8, 4, 1, 88);
1289 if (size != 66){
1290 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1291 return 0;
1292 }
1293 // ok valid card found!
1294
1295 // Index map
1296 // 0 10 20 30 40 50 60
1297 // | | | | | | |
1298 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1299 // -----------------------------------------------------------------------------
1300 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1301 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1302 // |26 bit| |-117--| |-----142------|
1303 // b = format bit len, o = odd parity of last 3 bits
1304 // f = facility code, c = card number
1305 // w = wiegand parity
1306 // (26 bit format shown)
1307
1308 uint32_t fc = 0;
1309 uint32_t cardnum = 0;
1310 uint32_t code1 = 0;
1311 uint32_t code2 = 0;
1312 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1313 if (fmtLen==26){
1314 fc = bytebits_to_byte(BitStream+9, 8);
1315 cardnum = bytebits_to_byte(BitStream+17, 16);
1316 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1317 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1318 } else {
1319 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1320 if (fmtLen>32){
1321 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1322 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1323 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1324 } else{
1325 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1326 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1327 }
1328 }
1329 if (g_debugMode){
1330 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1331 printDemodBuff();
1332 }
1333 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1334 return 1;
1335 }
1336
1337 //by marshmellow
1338 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1339 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1340 int CmdFSKdemodPyramid(const char *Cmd)
1341 {
1342 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1343 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1344 size_t size = getFromGraphBuf(BitStream);
1345 if (size==0) return 0;
1346
1347 //get binary from fsk wave
1348 int idx = PyramiddemodFSK(BitStream, &size);
1349 if (idx < 0){
1350 if (g_debugMode==1){
1351 if (idx == -5)
1352 PrintAndLog("DEBUG: Error - not enough samples");
1353 else if (idx == -1)
1354 PrintAndLog("DEBUG: Error - only noise found");
1355 else if (idx == -2)
1356 PrintAndLog("DEBUG: Error - problem during FSK demod");
1357 else if (idx == -3)
1358 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1359 else if (idx == -4)
1360 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1361 else
1362 PrintAndLog("DEBUG: Error - idx: %d",idx);
1363 }
1364 return 0;
1365 }
1366 // Index map
1367 // 0 10 20 30 40 50 60
1368 // | | | | | | |
1369 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1370 // -----------------------------------------------------------------------------
1371 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1372 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1373
1374 // 64 70 80 90 100 110 120
1375 // | | | | | | |
1376 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1377 // -----------------------------------------------------------------------------
1378 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1379 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1380 // |---115---||---------71---------|
1381 // s = format start bit, o = odd parity of last 7 bits
1382 // f = facility code, c = card number
1383 // w = wiegand parity, x = extra space for other formats
1384 // p = unknown checksum
1385 // (26 bit format shown)
1386
1387 //get bytes for checksum calc
1388 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1389 uint8_t csBuff[14] = {0x00};
1390 for (uint8_t i = 0; i < 13; i++){
1391 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1392 }
1393 //check checksum calc
1394 //checksum calc thanks to ICEMAN!!
1395 uint32_t checkCS = CRC8Maxim(csBuff,13);
1396
1397 //get raw ID before removing parities
1398 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1399 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1400 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1401 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1402 setDemodBuf(BitStream,128,idx);
1403
1404 size = removeParity(BitStream, idx+8, 8, 1, 120);
1405 if (size != 105){
1406 if (g_debugMode==1)
1407 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1408 return 0;
1409 }
1410
1411 // ok valid card found!
1412
1413 // Index map
1414 // 0 10 20 30 40 50 60 70
1415 // | | | | | | | |
1416 // 01234567890123456789012345678901234567890123456789012345678901234567890
1417 // -----------------------------------------------------------------------
1418 // 00000000000000000000000000000000000000000000000000000000000000000000000
1419 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1420
1421 // 71 80 90 100
1422 // | | | |
1423 // 1 2 34567890 1234567890123456 7 8901234
1424 // ---------------------------------------
1425 // 1 1 01110011 0000000001000110 0 1001010
1426 // s w ffffffff cccccccccccccccc w ppppppp
1427 // |--115-| |------71------|
1428 // s = format start bit, o = odd parity of last 7 bits
1429 // f = facility code, c = card number
1430 // w = wiegand parity, x = extra space for other formats
1431 // p = unknown checksum
1432 // (26 bit format shown)
1433
1434 //find start bit to get fmtLen
1435 int j;
1436 for (j=0; j<size; j++){
1437 if(BitStream[j]) break;
1438 }
1439 uint8_t fmtLen = size-j-8;
1440 uint32_t fc = 0;
1441 uint32_t cardnum = 0;
1442 uint32_t code1 = 0;
1443 if (fmtLen==26){
1444 fc = bytebits_to_byte(BitStream+73, 8);
1445 cardnum = bytebits_to_byte(BitStream+81, 16);
1446 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1447 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);
1448 } else if (fmtLen==45){
1449 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1450 fc = bytebits_to_byte(BitStream+53, 10);
1451 cardnum = bytebits_to_byte(BitStream+63, 32);
1452 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1453 } else {
1454 cardnum = bytebits_to_byte(BitStream+81, 16);
1455 if (fmtLen>32){
1456 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1457 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1458 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1459 } else{
1460 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1461 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1462 }
1463 }
1464 if (checksum == checkCS)
1465 PrintAndLog("Checksum %02x passed", checksum);
1466 else
1467 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1468
1469 if (g_debugMode){
1470 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1471 printDemodBuff();
1472 }
1473 return 1;
1474 }
1475
1476 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1477 // 8 databits + 1 parity (1)
1478 // CIITT 16 chksum
1479 // NATIONAL CODE, ICAR database
1480 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1481 // FLAG (animal/non-animal)
1482 /*
1483 38 IDbits
1484 10 country code
1485 1 extra app bit
1486 14 reserved bits
1487 1 animal bit
1488 16 ccitt CRC chksum over 64bit ID CODE.
1489 24 appli bits.
1490
1491 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1492 */
1493 int CmdFDXBdemodBI(const char *Cmd){
1494
1495 int invert = 1;
1496 int clk = 32;
1497 int errCnt = 0;
1498 int maxErr = 0;
1499 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1500 size_t size = getFromGraphBuf(BitStream);
1501
1502 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1503 if ( errCnt < 0 || errCnt > maxErr ) {
1504 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1505 return 0;
1506 }
1507
1508 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1509 if (errCnt < 0 || errCnt > maxErr ) {
1510 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1511 return 0;
1512 }
1513
1514 int preambleIndex = FDXBdemodBI(BitStream, &size);
1515 if (preambleIndex < 0){
1516 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1517 return 0;
1518 }
1519 if (size != 128) {
1520 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1521 return 0;
1522 }
1523
1524 setDemodBuf(BitStream, 128, preambleIndex);
1525
1526 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1527 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1528 if ( size != 104 ) {
1529 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1530 return 0;
1531 }
1532 if (g_debugMode) {
1533 char *bin = sprint_bin_break(BitStream,size,16);
1534 PrintAndLog("DEBUG BinStream:\n%s",bin);
1535 }
1536 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1537 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1538
1539 //got a good demod
1540 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1541 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1542 uint8_t dataBlockBit = BitStream[48];
1543 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1544 uint8_t animalBit = BitStream[63];
1545 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1546 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1547
1548 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1549 uint8_t raw[8];
1550 num_to_bytes(rawid, 8, raw);
1551
1552 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1553
1554 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1555 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1556 PrintAndLog("National Code: %012llu", NationalCode);
1557 PrintAndLog("CountryCode: %04u", countryCode);
1558 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1559 PrintAndLog("reserved Code: %u", reservedCode);
1560 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1561 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1562 PrintAndLog("Extended: 0x%X\n", extended);
1563
1564 return 1;
1565 }
1566
1567
1568 //by marshmellow
1569 //attempt to psk1 demod graph buffer
1570 int PSKDemod(const char *Cmd, bool verbose)
1571 {
1572 int invert=0;
1573 int clk=0;
1574 int maxErr=100;
1575 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1576 if (clk==1){
1577 invert=1;
1578 clk=0;
1579 }
1580 if (invert != 0 && invert != 1) {
1581 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1582 return 0;
1583 }
1584 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1585 size_t BitLen = getFromGraphBuf(BitStream);
1586 if (BitLen==0) return 0;
1587 uint8_t carrier=countFC(BitStream, BitLen, 0);
1588 if (carrier!=2 && carrier!=4 && carrier!=8){
1589 //invalid carrier
1590 return 0;
1591 }
1592 if (g_debugMode){
1593 PrintAndLog("Carrier: rf/%d",carrier);
1594 }
1595 int errCnt=0;
1596 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1597 if (errCnt > maxErr){
1598 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1599 return 0;
1600 }
1601 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1602 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1603 return 0;
1604 }
1605 if (verbose || g_debugMode){
1606 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1607 if (errCnt>0){
1608 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1609 }
1610 }
1611 //prime demod buffer for output
1612 setDemodBuf(BitStream,BitLen,0);
1613 return 1;
1614 }
1615
1616 // Indala 26 bit decode
1617 // by marshmellow
1618 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1619 int CmdIndalaDecode(const char *Cmd)
1620 {
1621 int ans;
1622 if (strlen(Cmd)>0){
1623 ans = PSKDemod(Cmd, 0);
1624 } else{ //default to RF/32
1625 ans = PSKDemod("32", 0);
1626 }
1627
1628 if (!ans){
1629 if (g_debugMode==1)
1630 PrintAndLog("Error1: %d",ans);
1631 return 0;
1632 }
1633 uint8_t invert=0;
1634 size_t size = DemodBufferLen;
1635 size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
1636 if (startIdx < 1 || size > 224) {
1637 if (g_debugMode==1)
1638 PrintAndLog("Error2: %d",ans);
1639 return -1;
1640 }
1641 setDemodBuf(DemodBuffer, size, startIdx);
1642 if (invert)
1643 if (g_debugMode==1)
1644 PrintAndLog("Had to invert bits");
1645
1646 PrintAndLog("BitLen: %d",DemodBufferLen);
1647 //convert UID to HEX
1648 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1649 uid1=bytebits_to_byte(DemodBuffer,32);
1650 uid2=bytebits_to_byte(DemodBuffer+32,32);
1651 if (DemodBufferLen==64) {
1652 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1653 } else {
1654 uid3=bytebits_to_byte(DemodBuffer+64,32);
1655 uid4=bytebits_to_byte(DemodBuffer+96,32);
1656 uid5=bytebits_to_byte(DemodBuffer+128,32);
1657 uid6=bytebits_to_byte(DemodBuffer+160,32);
1658 uid7=bytebits_to_byte(DemodBuffer+192,32);
1659 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1660 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1661 }
1662 if (g_debugMode){
1663 PrintAndLog("DEBUG: printing demodbuffer:");
1664 printDemodBuff();
1665 }
1666 return 1;
1667 }
1668
1669 int CmdPSKNexWatch(const char *Cmd)
1670 {
1671 if (!PSKDemod("", false)) return 0;
1672 uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
1673 size_t startIdx = 0, size = DemodBufferLen;
1674 bool invert = false;
1675 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1676 // if didn't find preamble try again inverting
1677 if (!PSKDemod("1", false)) return 0;
1678 size = DemodBufferLen;
1679 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1680 invert = true;
1681 }
1682 if (size != 128) return 0;
1683 setDemodBuf(DemodBuffer, size, startIdx+4);
1684 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1685 //get ID
1686 uint32_t ID = 0;
1687 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1688 for (uint8_t idx=0; idx<8; idx++){
1689 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1690 }
1691 }
1692 //parity check (TBD)
1693
1694 //checksum check (TBD)
1695
1696 //output
1697 PrintAndLog("NexWatch ID: %d", ID);
1698 if (invert){
1699 PrintAndLog("Had to Invert - probably NexKey");
1700 for (uint8_t idx=0; idx<size; idx++)
1701 DemodBuffer[idx] ^= 1;
1702 }
1703
1704 CmdPrintDemodBuff("x");
1705 return 1;
1706 }
1707
1708 // by marshmellow
1709 // takes 3 arguments - clock, invert, maxErr as integers
1710 // attempts to demodulate nrz only
1711 // prints binary found and saves in demodbuffer for further commands
1712 int NRZrawDemod(const char *Cmd, bool verbose)
1713 {
1714 int invert=0;
1715 int clk=0;
1716 int maxErr=100;
1717 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1718 if (clk==1){
1719 invert=1;
1720 clk=0;
1721 }
1722 if (invert != 0 && invert != 1) {
1723 PrintAndLog("Invalid argument: %s", Cmd);
1724 return 0;
1725 }
1726 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1727 size_t BitLen = getFromGraphBuf(BitStream);
1728 if (BitLen==0) return 0;
1729 int errCnt=0;
1730 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1731 if (errCnt > maxErr){
1732 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1733 return 0;
1734 }
1735 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1736 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1737 return 0;
1738 }
1739 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1740 //prime demod buffer for output
1741 setDemodBuf(BitStream,BitLen,0);
1742
1743 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1744 if (verbose || g_debugMode) {
1745 PrintAndLog("NRZ demoded bitstream:");
1746 // Now output the bitstream to the scrollback by line of 16 bits
1747 printDemodBuff();
1748 }
1749 return 1;
1750 }
1751
1752 int CmdNRZrawDemod(const char *Cmd)
1753 {
1754 char cmdp = param_getchar(Cmd, 0);
1755 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1756 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1757 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1758 PrintAndLog(" <invert>, 1 for invert output");
1759 PrintAndLog(" [set maximum allowed errors], default = 100.");
1760 PrintAndLog("");
1761 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1762 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1763 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1764 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1765 PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1766 return 0;
1767 }
1768 return NRZrawDemod(Cmd, TRUE);
1769 }
1770
1771 // by marshmellow
1772 // takes 3 arguments - clock, invert, maxErr as integers
1773 // attempts to demodulate psk only
1774 // prints binary found and saves in demodbuffer for further commands
1775 int CmdPSK1rawDemod(const char *Cmd)
1776 {
1777 int ans;
1778 char cmdp = param_getchar(Cmd, 0);
1779 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1780 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1781 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1782 PrintAndLog(" <invert>, 1 for invert output");
1783 PrintAndLog(" [set maximum allowed errors], default = 100.");
1784 PrintAndLog("");
1785 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1786 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1787 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1788 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1789 PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1790 return 0;
1791 }
1792 ans = PSKDemod(Cmd, TRUE);
1793 //output
1794 if (!ans){
1795 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1796 return 0;
1797 }
1798
1799 PrintAndLog("PSK1 demoded bitstream:");
1800 // Now output the bitstream to the scrollback by line of 16 bits
1801 printDemodBuff();
1802 return 1;
1803 }
1804
1805 // by marshmellow
1806 // takes same args as cmdpsk1rawdemod
1807 int CmdPSK2rawDemod(const char *Cmd)
1808 {
1809 int ans=0;
1810 char cmdp = param_getchar(Cmd, 0);
1811 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1812 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1813 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1814 PrintAndLog(" <invert>, 1 for invert output");
1815 PrintAndLog(" [set maximum allowed errors], default = 100.");
1816 PrintAndLog("");
1817 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1818 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1819 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1820 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1821 PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
1822 return 0;
1823 }
1824 ans=PSKDemod(Cmd, TRUE);
1825 if (!ans){
1826 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1827 return 0;
1828 }
1829 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1830 PrintAndLog("PSK2 demoded bitstream:");
1831 // Now output the bitstream to the scrollback by line of 16 bits
1832 printDemodBuff();
1833 return 1;
1834 }
1835
1836 // by marshmellow - combines all raw demod functions into one menu command
1837 int CmdRawDemod(const char *Cmd)
1838 {
1839 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1840
1841 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1842 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1843 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1844 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1845 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1846 PrintAndLog(" <options> see specific modulation help for optional parameters");
1847 PrintAndLog("");
1848 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1849 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1850 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1851 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1852 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1853 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1854 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1855 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1856 return 0;
1857 }
1858 char cmdp2 = Cmd[1];
1859 int ans = 0;
1860 if (cmdp == 'f' && cmdp2 == 's'){
1861 ans = CmdFSKrawdemod(Cmd+2);
1862 } else if(cmdp == 'a' && cmdp2 == 'b'){
1863 ans = Cmdaskbiphdemod(Cmd+2);
1864 } else if(cmdp == 'a' && cmdp2 == 'm'){
1865 ans = Cmdaskmandemod(Cmd+2);
1866 } else if(cmdp == 'a' && cmdp2 == 'r'){
1867 ans = Cmdaskrawdemod(Cmd+2);
1868 } else if(cmdp == 'n' && cmdp2 == 'r'){
1869 ans = CmdNRZrawDemod(Cmd+2);
1870 } else if(cmdp == 'p' && cmdp2 == '1'){
1871 ans = CmdPSK1rawDemod(Cmd+2);
1872 } else if(cmdp == 'p' && cmdp2 == '2'){
1873 ans = CmdPSK2rawDemod(Cmd+2);
1874 } else {
1875 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1876 }
1877 return ans;
1878 }
1879
1880 int CmdGrid(const char *Cmd)
1881 {
1882 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1883 PlotGridXdefault= PlotGridX;
1884 PlotGridYdefault= PlotGridY;
1885 RepaintGraphWindow();
1886 return 0;
1887 }
1888
1889 int CmdHexsamples(const char *Cmd)
1890 {
1891 int i, j;
1892 int requested = 0;
1893 int offset = 0;
1894 char string_buf[25];
1895 char* string_ptr = string_buf;
1896 uint8_t got[BIGBUF_SIZE];
1897
1898 sscanf(Cmd, "%i %i", &requested, &offset);
1899
1900 /* if no args send something */
1901 if (requested == 0) {
1902 requested = 8;
1903 }
1904 if (offset + requested > sizeof(got)) {
1905 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1906 return 0;
1907 }
1908
1909 GetFromBigBuf(got,requested,offset);
1910 WaitForResponse(CMD_ACK,NULL);
1911
1912 i = 0;
1913 for (j = 0; j < requested; j++) {
1914 i++;
1915 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1916 if (i == 8) {
1917 *(string_ptr - 1) = '\0'; // remove the trailing space
1918 PrintAndLog("%s", string_buf);
1919 string_buf[0] = '\0';
1920 string_ptr = string_buf;
1921 i = 0;
1922 }
1923 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1924 *(string_ptr - 1) = '\0';
1925 PrintAndLog("%s", string_buf);
1926 string_buf[0] = '\0';
1927 }
1928 }
1929 return 0;
1930 }
1931
1932 int CmdHide(const char *Cmd)
1933 {
1934 HideGraphWindow();
1935 return 0;
1936 }
1937
1938 //zero mean GraphBuffer
1939 int CmdHpf(const char *Cmd)
1940 {
1941 int i;
1942 int accum = 0;
1943
1944 for (i = 10; i < GraphTraceLen; ++i)
1945 accum += GraphBuffer[i];
1946 accum /= (GraphTraceLen - 10);
1947 for (i = 0; i < GraphTraceLen; ++i)
1948 GraphBuffer[i] -= accum;
1949
1950 RepaintGraphWindow();
1951 return 0;
1952 }
1953
1954 uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
1955 {
1956 int i;
1957 uint8_t val = 0;
1958 for(i =0 ; i < bits_per_sample; i++)
1959 {
1960 val |= (headBit(b) << (7-i));
1961 }
1962 return val;
1963 }
1964
1965 int getSamples(const char *Cmd, bool silent)
1966 {
1967 //If we get all but the last byte in bigbuf,
1968 // we don't have to worry about remaining trash
1969 // in the last byte in case the bits-per-sample
1970 // does not line up on byte boundaries
1971
1972 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1973
1974 int n = strtol(Cmd, NULL, 0);
1975
1976 if (n == 0 || n > sizeof(got))
1977 n = sizeof(got);
1978
1979 PrintAndLog("Reading %d bytes from device memory\n", n);
1980 GetFromBigBuf(got,n,0);
1981 PrintAndLog("Data fetched");
1982 UsbCommand response;
1983 WaitForResponse(CMD_ACK, &response);
1984 uint8_t bits_per_sample = 8;
1985
1986 //Old devices without this feature would send 0 at arg[0]
1987 if(response.arg[0] > 0)
1988 {
1989 sample_config *sc = (sample_config *) response.d.asBytes;
1990 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1991 , sc->decimation);
1992 bits_per_sample = sc->bits_per_sample;
1993 }
1994 if(bits_per_sample < 8)
1995 {
1996 PrintAndLog("Unpacking...");
1997 BitstreamIn bout = { got, bits_per_sample * n, 0};
1998 int j =0;
1999 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2000 uint8_t sample = getByte(bits_per_sample, &bout);
2001 GraphBuffer[j] = ((int) sample )- 128;
2002 }
2003 GraphTraceLen = j;
2004 PrintAndLog("Unpacked %d samples" , j );
2005 }else
2006 {
2007 for (int j = 0; j < n; j++) {
2008 GraphBuffer[j] = ((int)got[j]) - 128;
2009 }
2010 GraphTraceLen = n;
2011 }
2012
2013 RepaintGraphWindow();
2014 return 0;
2015 }
2016
2017 int CmdSamples(const char *Cmd)
2018 {
2019 return getSamples(Cmd, false);
2020 }
2021
2022 int CmdTuneSamples(const char *Cmd)
2023 {
2024 int timeout = 0;
2025 printf("\nMeasuring antenna characteristics, please wait...");
2026
2027 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2028 SendCommand(&c);
2029
2030 UsbCommand resp;
2031 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2032 timeout++;
2033 printf(".");
2034 if (timeout > 7) {
2035 PrintAndLog("\nNo response from Proxmark. Aborting...");
2036 return 1;
2037 }
2038 }
2039
2040 int peakv, peakf;
2041 int vLf125, vLf134, vHf;
2042 vLf125 = resp.arg[0] & 0xffff;
2043 vLf134 = resp.arg[0] >> 16;
2044 vHf = resp.arg[1] & 0xffff;;
2045 peakf = resp.arg[2] & 0xffff;
2046 peakv = resp.arg[2] >> 16;
2047 PrintAndLog("");
2048 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2049 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2050 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2051 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2052
2053 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2054 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2055 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2056 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2057
2058 if (peakv < LF_UNUSABLE_V)
2059 PrintAndLog("# Your LF antenna is unusable.");
2060 else if (peakv < LF_MARGINAL_V)
2061 PrintAndLog("# Your LF antenna is marginal.");
2062 if (vHf < HF_UNUSABLE_V)
2063 PrintAndLog("# Your HF antenna is unusable.");
2064 else if (vHf < HF_MARGINAL_V)
2065 PrintAndLog("# Your HF antenna is marginal.");
2066
2067 if (peakv >= LF_UNUSABLE_V) {
2068 for (int i = 0; i < 256; i++) {
2069 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2070 }
2071 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2072 PrintAndLog("\n");
2073 GraphTraceLen = 256;
2074 ShowGraphWindow();
2075 RepaintGraphWindow();
2076 }
2077
2078 return 0;
2079 }
2080
2081
2082 int CmdLoad(const char *Cmd)
2083 {
2084 char filename[FILE_PATH_SIZE] = {0x00};
2085 int len = 0;
2086
2087 len = strlen(Cmd);
2088 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2089 memcpy(filename, Cmd, len);
2090
2091 FILE *f = fopen(filename, "r");
2092 if (!f) {
2093 PrintAndLog("couldn't open '%s'", filename);
2094 return 0;
2095 }
2096
2097 GraphTraceLen = 0;
2098 char line[80];
2099 while (fgets(line, sizeof (line), f)) {
2100 GraphBuffer[GraphTraceLen] = atoi(line);
2101 GraphTraceLen++;
2102 }
2103 fclose(f);
2104 PrintAndLog("loaded %d samples", GraphTraceLen);
2105 RepaintGraphWindow();
2106 return 0;
2107 }
2108
2109 int CmdLtrim(const char *Cmd)
2110 {
2111 int ds = atoi(Cmd);
2112 if (GraphTraceLen<=0) return 0;
2113 for (int i = ds; i < GraphTraceLen; ++i)
2114 GraphBuffer[i-ds] = GraphBuffer[i];
2115 GraphTraceLen -= ds;
2116
2117 RepaintGraphWindow();
2118 return 0;
2119 }
2120
2121 // trim graph to input argument length
2122 int CmdRtrim(const char *Cmd)
2123 {
2124 int ds = atoi(Cmd);
2125
2126 GraphTraceLen = ds;
2127
2128 RepaintGraphWindow();
2129 return 0;
2130 }
2131
2132 int CmdNorm(const char *Cmd)
2133 {
2134 int i;
2135 int max = INT_MIN, min = INT_MAX;
2136
2137 for (i = 10; i < GraphTraceLen; ++i) {
2138 if (GraphBuffer[i] > max)
2139 max = GraphBuffer[i];
2140 if (GraphBuffer[i] < min)
2141 min = GraphBuffer[i];
2142 }
2143
2144 if (max != min) {
2145 for (i = 0; i < GraphTraceLen; ++i) {
2146 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2147 (max - min);
2148 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2149 }
2150 }
2151 RepaintGraphWindow();
2152 return 0;
2153 }
2154
2155 int CmdPlot(const char *Cmd)
2156 {
2157 ShowGraphWindow();
2158 return 0;
2159 }
2160
2161 int CmdSave(const char *Cmd)
2162 {
2163 char filename[FILE_PATH_SIZE] = {0x00};
2164 int len = 0;
2165
2166 len = strlen(Cmd);
2167 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2168 memcpy(filename, Cmd, len);
2169
2170
2171 FILE *f = fopen(filename, "w");
2172 if(!f) {
2173 PrintAndLog("couldn't open '%s'", filename);
2174 return 0;
2175 }
2176 int i;
2177 for (i = 0; i < GraphTraceLen; i++) {
2178 fprintf(f, "%d\n", GraphBuffer[i]);
2179 }
2180 fclose(f);
2181 PrintAndLog("saved to '%s'", Cmd);
2182 return 0;
2183 }
2184
2185 int CmdScale(const char *Cmd)
2186 {
2187 CursorScaleFactor = atoi(Cmd);
2188 if (CursorScaleFactor == 0) {
2189 PrintAndLog("bad, can't have zero scale");
2190 CursorScaleFactor = 1;
2191 }
2192 RepaintGraphWindow();
2193 return 0;
2194 }
2195
2196 int CmdDirectionalThreshold(const char *Cmd)
2197 {
2198 int8_t upThres = param_get8(Cmd, 0);
2199 int8_t downThres = param_get8(Cmd, 1);
2200
2201 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2202
2203 int lastValue = GraphBuffer[0];
2204 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2205
2206 for (int i = 1; i < GraphTraceLen; ++i) {
2207 // Apply first threshold to samples heading up
2208 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2209 {
2210 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2211 GraphBuffer[i] = 1;
2212 }
2213 // Apply second threshold to samples heading down
2214 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2215 {
2216 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2217 GraphBuffer[i] = -1;
2218 }
2219 else
2220 {
2221 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2222 GraphBuffer[i] = GraphBuffer[i-1];
2223
2224 }
2225 }
2226 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2227 RepaintGraphWindow();
2228 return 0;
2229 }
2230
2231 int CmdZerocrossings(const char *Cmd)
2232 {
2233 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2234 CmdHpf("");
2235
2236 int sign = 1;
2237 int zc = 0;
2238 int lastZc = 0;
2239
2240 for (int i = 0; i < GraphTraceLen; ++i) {
2241 if (GraphBuffer[i] * sign >= 0) {
2242 // No change in sign, reproduce the previous sample count.
2243 zc++;
2244 GraphBuffer[i] = lastZc;
2245 } else {
2246 // Change in sign, reset the sample count.
2247 sign = -sign;
2248 GraphBuffer[i] = lastZc;
2249 if (sign > 0) {
2250 lastZc = zc;
2251 zc = 0;
2252 }
2253 }
2254 }
2255
2256 RepaintGraphWindow();
2257 return 0;
2258 }
2259
2260 int usage_data_bin2hex(){
2261 PrintAndLog("Usage: data bin2hex <binary_digits>");
2262 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2263 return 0;
2264 }
2265
2266 /**
2267 * @brief Utility for conversion via cmdline.
2268 * @param Cmd
2269 * @return
2270 */
2271 int Cmdbin2hex(const char *Cmd)
2272 {
2273 int bg =0, en =0;
2274 if(param_getptr(Cmd, &bg, &en, 0))
2275 {
2276 return usage_data_bin2hex();
2277 }
2278 //Number of digits supplied as argument
2279 size_t length = en - bg +1;
2280 size_t bytelen = (length+7) / 8;
2281 uint8_t* arr = (uint8_t *) malloc(bytelen);
2282 memset(arr, 0, bytelen);
2283 BitstreamOut bout = { arr, 0, 0 };
2284
2285 for(; bg <= en ;bg++)
2286 {
2287 char c = Cmd[bg];
2288 if( c == '1') pushBit(&bout, 1);
2289 else if( c == '0') pushBit(&bout, 0);
2290 else PrintAndLog("Ignoring '%c'", c);
2291 }
2292
2293 if(bout.numbits % 8 != 0)
2294 {
2295 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2296 }
2297
2298 //Uses printf instead of PrintAndLog since the latter
2299 // adds linebreaks to each printout - this way was more convenient since we don't have to
2300 // allocate a string and write to that first...
2301 for(size_t x = 0; x < bytelen ; x++)
2302 {
2303 printf("%02X", arr[x]);
2304 }
2305 printf("\n");
2306 free(arr);
2307 return 0;
2308 }
2309
2310 int usage_data_hex2bin(){
2311
2312 PrintAndLog("Usage: data bin2hex <binary_digits>");
2313 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2314 return 0;
2315
2316 }
2317
2318 int Cmdhex2bin(const char *Cmd)
2319 {
2320 int bg =0, en =0;
2321 if(param_getptr(Cmd, &bg, &en, 0))
2322 {
2323 return usage_data_hex2bin();
2324 }
2325
2326
2327 while(bg <= en )
2328 {
2329 char x = Cmd[bg++];
2330 // capitalize
2331 if (x >= 'a' && x <= 'f')
2332 x -= 32;
2333 // convert to numeric value
2334 if (x >= '0' && x <= '9')
2335 x -= '0';
2336 else if (x >= 'A' && x <= 'F')
2337 x -= 'A' - 10;
2338 else
2339 continue;
2340
2341 //Uses printf instead of PrintAndLog since the latter
2342 // adds linebreaks to each printout - this way was more convenient since we don't have to
2343 // allocate a string and write to that first...
2344
2345 for(int i= 0 ; i < 4 ; ++i)
2346 printf("%d",(x >> (3 - i)) & 1);
2347 }
2348 printf("\n");
2349
2350 return 0;
2351 }
2352
2353 static command_t CommandTable[] =
2354 {
2355 {"help", CmdHelp, 1, "This help"},
2356 {"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)"},
2357 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2358 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2359 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"},
2360 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2361 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2362 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2363 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2364 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2365 {"dec", CmdDec, 1, "Decimate samples"},
2366 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2367 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2368 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2369 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2370 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2371 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2372 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2373 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2374 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2375 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2376 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2377 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2378 {"hide", CmdHide, 1, "Hide graph window"},
2379 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2380 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2381 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2382 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2383 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2384 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2385 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2386 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
2387 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2388 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2389 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2390 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2391 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2392 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2393 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2394 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2395 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2396 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2397 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2398 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2399 {NULL, NULL, 0, NULL}
2400 };
2401
2402 int CmdData(const char *Cmd)
2403 {
2404 CmdsParse(CommandTable, Cmd);
2405 return 0;
2406 }
2407
2408 int CmdHelp(const char *Cmd)
2409 {
2410 CmdsHelp(CommandTable);
2411 return 0;
2412 }
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