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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
27 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
28 uint8_t g_debugMode;
29 int DemodBufferLen;
30 static int CmdHelp(const char *Cmd);
31
32 //set the demod buffer with given array of binary (one bit per byte)
33 //by marshmellow
34 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
35 {
36 if (buff == NULL)
37 return;
38
39 if ( size >= MAX_DEMOD_BUF_LEN)
40 size = MAX_DEMOD_BUF_LEN;
41
42 size_t i = 0;
43 for (; i < size; i++){
44 DemodBuffer[i]=buff[startIdx++];
45 }
46 DemodBufferLen=size;
47 return;
48 }
49
50 int CmdSetDebugMode(const char *Cmd)
51 {
52 int demod=0;
53 sscanf(Cmd, "%i", &demod);
54 g_debugMode=(uint8_t)demod;
55 return 1;
56 }
57
58 //by marshmellow
59 void printDemodBuff(void)
60 {
61 int bitLen = DemodBufferLen;
62 if (bitLen<1) {
63 PrintAndLog("no bits found in demod buffer");
64 return;
65 }
66 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
67
68 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
69 PrintAndLog("%s",bin);
70
71 return;
72 }
73
74 int CmdPrintDemodBuff(const char *Cmd)
75 {
76 char hex;
77 char printBuff[512]={0x00};
78 uint8_t numBits = DemodBufferLen & 0xFFFC;
79 sscanf(Cmd, "%c", &hex);
80 if (hex == 'h'){
81 PrintAndLog("Usage: data printdemodbuffer [x]");
82 PrintAndLog("Options: ");
83 PrintAndLog(" h This help");
84 PrintAndLog(" x output in hex (omit for binary output)");
85 return 0;
86 }
87 if (hex == 'x'){
88 numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
89 if (numBits==0) return 0;
90 PrintAndLog("DemodBuffer: %s",printBuff);
91 } else {
92 printDemodBuff();
93 }
94 return 1;
95 }
96
97 //by marshmellow
98 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
99 int CmdGetBitStream(const char *Cmd)
100 {
101 int i;
102 CmdHpf(Cmd);
103 for (i = 0; i < GraphTraceLen; i++) {
104 if (GraphBuffer[i] >= 1) {
105 GraphBuffer[i] = 1;
106 } else {
107 GraphBuffer[i] = 0;
108 }
109 }
110 RepaintGraphWindow();
111 return 0;
112 }
113
114 //by marshmellow
115 //print 64 bit EM410x ID in multiple formats
116 void printEM410x(uint32_t hi, uint64_t id)
117 {
118 if (id || hi){
119 uint64_t iii=1;
120 uint64_t id2lo=0;
121 uint32_t ii=0;
122 uint32_t i=0;
123 for (ii=5; ii>0;ii--){
124 for (i=0;i<8;i++){
125 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
126 }
127 }
128 if (hi){
129 //output 88 bit em id
130 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
131 } else{
132 //output 40 bit em id
133 PrintAndLog("\nEM TAG ID : %010llX", id);
134 PrintAndLog("Unique TAG ID : %010llX", id2lo);
135 PrintAndLog("\nPossible de-scramble patterns");
136 PrintAndLog("HoneyWell IdentKey {");
137 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
138 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
139 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
140 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
141 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
142 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
143 PrintAndLog("DEZ 14/IK2 : %014lld",id);
144 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
145 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
146 (id2lo & 0xf000000000) >> 36,
147 (id2lo & 0x0f00000000) >> 32,
148 (id2lo & 0x00f0000000) >> 28,
149 (id2lo & 0x000f000000) >> 24,
150 (id2lo & 0x0000f00000) >> 20,
151 (id2lo & 0x00000f0000) >> 16,
152 (id2lo & 0x000000f000) >> 12,
153 (id2lo & 0x0000000f00) >> 8,
154 (id2lo & 0x00000000f0) >> 4,
155 (id2lo & 0x000000000f)
156 );
157 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
158 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
159 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
160
161 uint32_t p1id = (id & 0xFFFFFF);
162 uint8_t arr[32] = {0x00};
163 int i =0;
164 int j = 23;
165 for (; i < 24; ++i, --j ){
166 arr[i] = (p1id >> i) & 1;
167 }
168
169 uint32_t p1 = 0;
170
171 p1 |= arr[23] << 21;
172 p1 |= arr[22] << 23;
173 p1 |= arr[21] << 20;
174 p1 |= arr[20] << 22;
175
176 p1 |= arr[19] << 18;
177 p1 |= arr[18] << 16;
178 p1 |= arr[17] << 19;
179 p1 |= arr[16] << 17;
180
181 p1 |= arr[15] << 13;
182 p1 |= arr[14] << 15;
183 p1 |= arr[13] << 12;
184 p1 |= arr[12] << 14;
185
186 p1 |= arr[11] << 6;
187 p1 |= arr[10] << 2;
188 p1 |= arr[9] << 7;
189 p1 |= arr[8] << 1;
190
191 p1 |= arr[7] << 0;
192 p1 |= arr[6] << 8;
193 p1 |= arr[5] << 11;
194 p1 |= arr[4] << 3;
195
196 p1 |= arr[3] << 10;
197 p1 |= arr[2] << 4;
198 p1 |= arr[1] << 5;
199 p1 |= arr[0] << 9;
200 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
201
202 uint16_t sebury1 = id & 0xFFFF;
203 uint8_t sebury2 = (id >> 16) & 0x7F;
204 uint32_t sebury3 = id & 0x7FFFFF;
205 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
206 }
207 }
208 return;
209 }
210
211
212 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo)
213 {
214 int ans = ASKmanDemod(Cmd, FALSE, FALSE);
215 if (!ans) return 0;
216
217 size_t idx=0;
218 if (Em410xDecode(DemodBuffer,(size_t *) &DemodBufferLen, &idx, hi, lo)){
219 if (g_debugMode){
220 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, DemodBufferLen);
221 printDemodBuff();
222 }
223 return 1;
224 }
225 return 0;
226 }
227 //by marshmellow
228 //takes 3 arguments - clock, invert and maxErr as integers
229 //attempts to demodulate ask while decoding manchester
230 //prints binary found and saves in graphbuffer for further commands
231 int CmdAskEM410xDemod(const char *Cmd)
232 {
233 char cmdp = param_getchar(Cmd, 0);
234 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
235 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
236 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
237 PrintAndLog(" <invert>, 1 for invert output");
238 PrintAndLog(" [set maximum allowed errors], default = 100.");
239 PrintAndLog("");
240 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
241 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
242 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
243 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
244 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");
245 return 0;
246 }
247 uint32_t hi = 0;
248 uint64_t lo = 0;
249 if (AskEm410xDemod(Cmd, &hi, &lo)) {
250 PrintAndLog("EM410x pattern found: ");
251 printEM410x(hi, lo);
252 return 1;
253 }
254 return 0;
255 }
256
257 int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
258 {
259 int invert=0;
260 int clk=0;
261 int maxErr=100;
262 int maxLen=512*64;
263 //param_getdec(Cmd, 0, &clk);
264 //param_getdec(Cmd, 1, &invert);
265 //maxErr = param_get32ex(Cmd, 2, 0xFFFFFFFF, 10);
266 //if (maxErr == 0xFFFFFFFF) maxErr=100;
267 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
268 sscanf(Cmd, "%i %i %i %i", &clk, &invert, &maxErr, &maxLen);
269 if (invert != 0 && invert != 1) {
270 PrintAndLog("Invalid argument: %s", Cmd);
271 return 0;
272 }
273 if (clk==1){
274 invert=1;
275 clk=0;
276 }
277 size_t BitLen = getFromGraphBuf(BitStream);
278 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
279 if (!BitLen) return 0;
280 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
281 int errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
282 if (errCnt<0||BitLen<16){ //if fatal error (or -1)
283 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
284 return 0;
285 }
286 if (errCnt>maxErr){
287 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
288 return 0;
289 }
290 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
291
292 //output
293 if (errCnt>0){
294 if (verbose || g_debugMode) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
295 }
296 if (verbose || g_debugMode) PrintAndLog("ASK/Manchester decoded bitstream:");
297 // Now output the bitstream to the scrollback by line of 16 bits
298 setDemodBuf(BitStream,BitLen,0);
299 if (verbose || g_debugMode) printDemodBuff();
300 uint64_t lo =0;
301 uint32_t hi =0;
302 size_t idx=0;
303 if (emSearch){
304 if (Em410xDecode(BitStream, &BitLen, &idx, &hi, &lo)){
305 //set GraphBuffer for clone or sim command
306 setDemodBuf(BitStream, BitLen, idx);
307 if (g_debugMode){
308 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
309 printDemodBuff();
310 }
311 if (verbose) PrintAndLog("EM410x pattern found: ");
312 if (verbose) printEM410x(hi, lo);
313 return 1;
314 }
315 }
316 return 1;
317 }
318
319 //by marshmellow
320 //takes 3 arguments - clock, invert, maxErr as integers
321 //attempts to demodulate ask while decoding manchester
322 //prints binary found and saves in graphbuffer for further commands
323 int Cmdaskmandemod(const char *Cmd)
324 {
325 char cmdp = param_getchar(Cmd, 0);
326 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') {
327 PrintAndLog("Usage: data rawdemod am [clock] <0|1> [maxError] [setSmplLen]");
328 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
329 PrintAndLog(" <invert>, 1 for invert output");
330 PrintAndLog(" [set maximum allowed errors], default = 100.");
331 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64).");
332 PrintAndLog("");
333 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
334 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
335 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
336 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
337 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");
338 return 0;
339 }
340 return ASKmanDemod(Cmd, TRUE, TRUE);
341 }
342
343 //by marshmellow
344 //manchester decode
345 //stricktly take 10 and 01 and convert to 0 and 1
346 int Cmdmandecoderaw(const char *Cmd)
347 {
348 int i =0;
349 int errCnt=0;
350 size_t size=0;
351 size_t maxErr = 20;
352 char cmdp = param_getchar(Cmd, 0);
353 if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
354 PrintAndLog("Usage: data manrawdecode");
355 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
356 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
357 PrintAndLog("");
358 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
359 return 0;
360 }
361 if (DemodBufferLen==0) return 0;
362 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
363 int high=0,low=0;
364 for (;i<DemodBufferLen;++i){
365 if (DemodBuffer[i]>high) high=DemodBuffer[i];
366 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
367 BitStream[i]=DemodBuffer[i];
368 }
369 if (high>1 || low <0 ){
370 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
371 return 0;
372 }
373 size=i;
374 errCnt=manrawdecode(BitStream, &size);
375 if (errCnt>=maxErr){
376 PrintAndLog("Too many errors: %d",errCnt);
377 return 0;
378 }
379 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
380 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
381 if (errCnt==0){
382 uint64_t id = 0;
383 uint32_t hi = 0;
384 size_t idx=0;
385 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
386 //need to adjust to set bitstream back to manchester encoded data
387 //setDemodBuf(BitStream, size, idx);
388
389 printEM410x(hi, id);
390 }
391 }
392 return 1;
393 }
394
395 //by marshmellow
396 //biphase decode
397 //take 01 or 10 = 0 and 11 or 00 = 1
398 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
399 // and "invert" default = 0 if 1 it will invert output
400 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
401 int CmdBiphaseDecodeRaw(const char *Cmd)
402 {
403 size_t size=0;
404 int offset=0, invert=0, maxErr=20, errCnt=0;
405 char cmdp = param_getchar(Cmd, 0);
406 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
407 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
408 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
409 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
410 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
411 PrintAndLog("");
412 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
413 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
414 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
415 PrintAndLog("");
416 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
417 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
418 return 0;
419 }
420 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
421 if (DemodBufferLen==0){
422 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
423 return 0;
424 }
425 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
426 memcpy(BitStream, DemodBuffer, DemodBufferLen);
427 size = DemodBufferLen;
428 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
429 if (errCnt<0){
430 PrintAndLog("Error during decode:%d", errCnt);
431 return 0;
432 }
433 if (errCnt>maxErr){
434 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
435 return 0;
436 }
437
438 if (errCnt>0){
439 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
440 }
441 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
442 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
443
444 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
445 return 1;
446 }
447
448 //by marshmellow
449 //takes 4 arguments - clock, invert, maxErr as integers and amplify as char
450 //attempts to demodulate ask only
451 //prints binary found and saves in graphbuffer for further commands
452 int ASKrawDemod(const char *Cmd, bool verbose)
453 {
454 int invert=0;
455 int clk=0;
456 int maxErr=100;
457 uint8_t askAmp = 0;
458 char amp = param_getchar(Cmd, 0);
459 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
460 sscanf(Cmd, "%i %i %i %c", &clk, &invert, &maxErr, &amp);
461 if (invert != 0 && invert != 1) {
462 if (verbose || g_debugMode) PrintAndLog("Invalid argument: %s", Cmd);
463 return 0;
464 }
465 if (clk==1){
466 invert=1;
467 clk=0;
468 }
469 if (amp == 'a' || amp == 'A') askAmp=1;
470 size_t BitLen = getFromGraphBuf(BitStream);
471 if (BitLen==0) return 0;
472 int errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp);
473 if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
474 if (verbose || g_debugMode) PrintAndLog("no data found");
475 if (g_debugMode) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
476 return 0;
477 }
478 if (errCnt>maxErr) {
479 if (g_debugMode)
480 PrintAndLog("Too many errors found, errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
481 return 0;
482 }
483 if (verbose || g_debugMode)
484 PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk, invert, BitLen);
485
486 //move BitStream back to DemodBuffer
487 setDemodBuf(BitStream,BitLen,0);
488
489 //output
490 if (errCnt>0 && (verbose || g_debugMode)){
491 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d", errCnt);
492 }
493 if (verbose || g_debugMode){
494 PrintAndLog("ASK demoded bitstream:");
495 // Now output the bitstream to the scrollback by line of 16 bits
496 printDemodBuff();
497 }
498 return 1;
499 }
500
501 //by marshmellow
502 // - ASK Demod then Biphase decode GraphBuffer samples
503 int ASKbiphaseDemod(const char *Cmd, bool verbose)
504 {
505 //ask raw demod GraphBuffer first
506 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
507 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
508 if (ans>0)
509 ans = ASKrawDemod(Cmd+1, FALSE);
510 else
511 ans = ASKrawDemod(Cmd, FALSE);
512 if (!ans) {
513 if (g_debugMode || verbose) PrintAndLog("Error AskrawDemod: %d", ans);
514 return 0;
515 }
516
517 //attempt to Biphase decode DemodBuffer
518 size_t size = DemodBufferLen;
519 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
520 memcpy(BitStream, DemodBuffer, DemodBufferLen);
521
522 int 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 - # errors:%d - data:",offset,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) > 12 || cmdp == 'h' || cmdp == 'H') {
544 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] <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(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
550 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
551 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
552 PrintAndLog(" NOTE: any other arg must have previous args set to work");
553 PrintAndLog("");
554 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
555 PrintAndLog("");
556 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
557 PrintAndLog(" : data rawdemod ab a = demod an ask/biph tag from GraphBuffer, amplified");
558 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
559 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
560 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
561 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");
562 PrintAndLog(" : data rawdemod ab 0 64 1 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
563 return 0;
564 }
565 return ASKbiphaseDemod(Cmd, TRUE);
566 }
567
568 //by marshmellow
569 //attempts to demodulate and identify a G_Prox_II verex/chubb card
570 //WARNING: if it fails during some points it will destroy the DemodBuffer data
571 // but will leave the GraphBuffer intact.
572 //if successful it will push askraw data back to demod buffer ready for emulation
573 int CmdG_Prox_II_Demod(const char *Cmd)
574 {
575 if (!ASKbiphaseDemod(Cmd, FALSE)){
576 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
577 return 0;
578 }
579 size_t size = DemodBufferLen;
580 //call lfdemod.c demod for gProxII
581 int ans = gProxII_Demod(DemodBuffer, &size);
582 if (ans < 0){
583 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
584 return 0;
585 }
586 //got a good demod
587 uint32_t ByteStream[65] = {0x00};
588 uint8_t xorKey=0;
589 uint8_t keyCnt=0;
590 uint8_t bitCnt=0;
591 uint8_t ByteCnt=0;
592 size_t startIdx = ans + 6; //start after preamble
593 for (size_t idx = 0; idx<size-6; idx++){
594 if ((idx+1) % 5 == 0){
595 //spacer bit - should be 0
596 if (DemodBuffer[startIdx+idx] != 0) {
597 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
598 return 0;
599 }
600 continue;
601 }
602 if (keyCnt<8){ //lsb first
603 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
604 keyCnt++;
605 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
606 continue;
607 }
608 //lsb first
609 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
610 bitCnt++;
611 if (bitCnt % 8 == 0){
612 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
613 bitCnt=0;
614 ByteCnt++;
615 }
616 }
617 for (uint8_t i = 0; i < ByteCnt; i++){
618 ByteStream[i] ^= xorKey; //xor
619 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
620 }
621 //now ByteStream contains 64 bytes of decrypted raw tag data
622 //
623 uint8_t fmtLen = ByteStream[0]>>2;
624 uint32_t FC = 0;
625 uint32_t Card = 0;
626 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
627 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
628 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
629
630 if (fmtLen==36){
631 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
632 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
633 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
634 } else if(fmtLen==26){
635 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
636 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
637 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
638 } else {
639 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
640 }
641 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
642 setDemodBuf(DemodBuffer+ans, 96, 0);
643 return 1;
644 }
645
646 //by marshmellow - see ASKrawDemod
647 int Cmdaskrawdemod(const char *Cmd)
648 {
649 char cmdp = param_getchar(Cmd, 0);
650 if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
651 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [amplify]");
652 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
653 PrintAndLog(" <invert>, 1 to invert output");
654 PrintAndLog(" [set maximum allowed errors], default = 100");
655 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
656 PrintAndLog("");
657 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
658 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
659 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
660 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
661 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
662 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");
663 PrintAndLog(" : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
664 return 0;
665 }
666 return ASKrawDemod(Cmd, TRUE);
667 }
668
669 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
670 {
671 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
672 size_t Correlation = 0;
673 int maxSum = 0;
674 int lastMax = 0;
675 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
676 for (int i = 0; i < GraphTraceLen - window; ++i) {
677 int sum = 0;
678 for (int j = 0; j < window; ++j) {
679 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
680 }
681 CorrelBuffer[i] = sum;
682 if (sum >= maxSum-100 && sum <= maxSum+100){
683 //another max
684 Correlation = i-lastMax;
685 lastMax = i;
686 if (sum > maxSum) maxSum = sum;
687 } else if (sum > maxSum){
688 maxSum=sum;
689 lastMax = i;
690 }
691 }
692 if (Correlation==0){
693 //try again with wider margin
694 for (int i = 0; i < GraphTraceLen - window; i++){
695 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
696 //another max
697 Correlation = i-lastMax;
698 lastMax = i;
699 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
700 }
701 }
702 }
703 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
704
705 if (SaveGrph){
706 GraphTraceLen = GraphTraceLen - window;
707 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
708 RepaintGraphWindow();
709 }
710 return Correlation;
711 }
712
713 int usage_data_autocorr(void)
714 {
715 //print help
716 PrintAndLog("Usage: data autocorr [window] [g]");
717 PrintAndLog("Options: ");
718 PrintAndLog(" h This help");
719 PrintAndLog(" [window] window length for correlation - default = 4000");
720 PrintAndLog(" g save back to GraphBuffer (overwrite)");
721 return 0;
722 }
723
724 int CmdAutoCorr(const char *Cmd)
725 {
726 char cmdp = param_getchar(Cmd, 0);
727 if (cmdp == 'h' || cmdp == 'H')
728 return usage_data_autocorr();
729 int window = 4000; //set default
730 char grph=0;
731 bool updateGrph = FALSE;
732 sscanf(Cmd, "%i %c", &window, &grph);
733
734 if (window >= GraphTraceLen) {
735 PrintAndLog("window must be smaller than trace (%d samples)",
736 GraphTraceLen);
737 return 0;
738 }
739 if (grph == 'g') updateGrph=TRUE;
740 return AutoCorrelate(window, updateGrph, TRUE);
741 }
742
743 int CmdBitsamples(const char *Cmd)
744 {
745 int cnt = 0;
746 uint8_t got[12288];
747
748 GetFromBigBuf(got,sizeof(got),0);
749 WaitForResponse(CMD_ACK,NULL);
750
751 for (int j = 0; j < sizeof(got); j++) {
752 for (int k = 0; k < 8; k++) {
753 if(got[j] & (1 << (7 - k))) {
754 GraphBuffer[cnt++] = 1;
755 } else {
756 GraphBuffer[cnt++] = 0;
757 }
758 }
759 }
760 GraphTraceLen = cnt;
761 RepaintGraphWindow();
762 return 0;
763 }
764
765 int CmdBuffClear(const char *Cmd)
766 {
767 UsbCommand c = {CMD_BUFF_CLEAR};
768 SendCommand(&c);
769 ClearGraph(true);
770 return 0;
771 }
772
773 int CmdDec(const char *Cmd)
774 {
775 for (int i = 0; i < (GraphTraceLen / 2); ++i)
776 GraphBuffer[i] = GraphBuffer[i * 2];
777 GraphTraceLen /= 2;
778 PrintAndLog("decimated by 2");
779 RepaintGraphWindow();
780 return 0;
781 }
782 /**
783 * Undecimate - I'd call it 'interpolate', but we'll save that
784 * name until someone does an actual interpolation command, not just
785 * blindly repeating samples
786 * @param Cmd
787 * @return
788 */
789 int CmdUndec(const char *Cmd)
790 {
791 if(param_getchar(Cmd, 0) == 'h')
792 {
793 PrintAndLog("Usage: data undec [factor]");
794 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
795 PrintAndLog("Options: ");
796 PrintAndLog(" h This help");
797 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
798 PrintAndLog("Example: 'data undec 3'");
799 return 0;
800 }
801
802 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
803 //We have memory, don't we?
804 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
805 uint32_t g_index = 0 ,s_index = 0;
806 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
807 {
808 int count = 0;
809 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
810 swap[s_index+count] = GraphBuffer[g_index];
811 s_index+=count;
812 }
813
814 memcpy(GraphBuffer,swap, s_index * sizeof(int));
815 GraphTraceLen = s_index;
816 RepaintGraphWindow();
817 return 0;
818 }
819
820 //by marshmellow
821 //shift graph zero up or down based on input + or -
822 int CmdGraphShiftZero(const char *Cmd)
823 {
824
825 int shift=0;
826 //set options from parameters entered with the command
827 sscanf(Cmd, "%i", &shift);
828 int shiftedVal=0;
829 for(int i = 0; i<GraphTraceLen; i++){
830 shiftedVal=GraphBuffer[i]+shift;
831 if (shiftedVal>127)
832 shiftedVal=127;
833 else if (shiftedVal<-127)
834 shiftedVal=-127;
835 GraphBuffer[i]= shiftedVal;
836 }
837 CmdNorm("");
838 return 0;
839 }
840
841 //by marshmellow
842 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
843 //similar to dirtheshold, threshold commands
844 //takes a threshold length which is the measured length between two samples then determines an edge
845 int CmdAskEdgeDetect(const char *Cmd)
846 {
847 int thresLen = 25;
848 sscanf(Cmd, "%i", &thresLen);
849 int shift = 127;
850 int shiftedVal=0;
851 for(int i = 1; i<GraphTraceLen; i++){
852 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
853 shift=127;
854 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
855 shift=-127;
856
857 shiftedVal=GraphBuffer[i]+shift;
858
859 if (shiftedVal>127)
860 shiftedVal=127;
861 else if (shiftedVal<-127)
862 shiftedVal=-127;
863 GraphBuffer[i-1] = shiftedVal;
864 }
865 RepaintGraphWindow();
866 //CmdNorm("");
867 return 0;
868 }
869
870 /* Print our clock rate */
871 // uses data from graphbuffer
872 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
873 int CmdDetectClockRate(const char *Cmd)
874 {
875 char cmdp = param_getchar(Cmd, 0);
876 if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
877 PrintAndLog("Usage: data detectclock [modulation]");
878 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
879 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
880 PrintAndLog("");
881 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
882 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
883 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
884 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
885 }
886 int ans=0;
887 if (cmdp == 'a'){
888 ans = GetAskClock("", true, false);
889 } else if (cmdp == 'f'){
890 ans = GetFskClock("", true, false);
891 } else if (cmdp == 'n'){
892 ans = GetNrzClock("", true, false);
893 } else if (cmdp == 'p'){
894 ans = GetPskClock("", true, false);
895 } else {
896 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
897 }
898 return ans;
899 }
900
901 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
902 {
903 char *fskType;
904 if (fchigh==10 && fclow==8){
905 if (invert) //fsk2a
906 fskType = "FSK2a";
907 else //fsk2
908 fskType = "FSK2";
909 } else if (fchigh == 8 && fclow == 5) {
910 if (invert)
911 fskType = "FSK1";
912 else
913 fskType = "FSK1a";
914 } else {
915 fskType = "FSK??";
916 }
917 return fskType;
918 }
919
920 //by marshmellow
921 //fsk raw demod and print binary
922 //takes 4 arguments - Clock, invert, fchigh, fclow
923 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
924 int FSKrawDemod(const char *Cmd, bool verbose)
925 {
926 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
927 //set defaults
928 int rfLen = 0;
929 int invert = 0;
930 int fchigh = 0;
931 int fclow = 0;
932
933 //set options from parameters entered with the command
934 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
935
936 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
937 if (rfLen==1){
938 invert = 1; //if invert option only is used
939 rfLen = 0;
940 }
941 }
942
943 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
944 size_t BitLen = getFromGraphBuf(BitStream);
945 if (BitLen==0) return 0;
946 //get field clock lengths
947 uint16_t fcs=0;
948 if (fchigh==0 || fclow == 0){
949 fcs = countFC(BitStream, BitLen, 1);
950 if (fcs==0){
951 fchigh=10;
952 fclow=8;
953 }else{
954 fchigh = (fcs >> 8) & 0xFF;
955 fclow = fcs & 0xFF;
956 }
957 }
958 //get bit clock length
959 if (rfLen==0){
960 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
961 if (rfLen == 0) rfLen = 50;
962 }
963 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
964 if (size>0){
965 setDemodBuf(BitStream,size,0);
966
967 // Now output the bitstream to the scrollback by line of 16 bits
968 if (verbose || g_debugMode) {
969 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
970 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
971 printDemodBuff();
972 }
973
974 return 1;
975 } else{
976 if (g_debugMode) PrintAndLog("no FSK data found");
977 }
978 return 0;
979 }
980
981 //by marshmellow
982 //fsk raw demod and print binary
983 //takes 4 arguments - Clock, invert, fchigh, fclow
984 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
985 int CmdFSKrawdemod(const char *Cmd)
986 {
987 char cmdp = param_getchar(Cmd, 0);
988 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
989 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
990 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
991 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
992 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
993 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
994 PrintAndLog("");
995 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
996 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
997 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
998 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
999 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1000 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1001 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1002 return 0;
1003 }
1004 return FSKrawDemod(Cmd, TRUE);
1005 }
1006
1007 //by marshmellow (based on existing demod + holiman's refactor)
1008 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1009 //print full HID Prox ID and some bit format details if found
1010 int CmdFSKdemodHID(const char *Cmd)
1011 {
1012 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1013 uint32_t hi2=0, hi=0, lo=0;
1014
1015 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1016 size_t BitLen = getFromGraphBuf(BitStream);
1017 if (BitLen==0) return 0;
1018 //get binary from fsk wave
1019 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1020 if (idx<0){
1021 if (g_debugMode){
1022 if (idx==-1){
1023 PrintAndLog("DEBUG: Just Noise Detected");
1024 } else if (idx == -2) {
1025 PrintAndLog("DEBUG: Error demoding fsk");
1026 } else if (idx == -3) {
1027 PrintAndLog("DEBUG: Preamble not found");
1028 } else if (idx == -4) {
1029 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1030 } else {
1031 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1032 }
1033 }
1034 return 0;
1035 }
1036 if (hi2==0 && hi==0 && lo==0) {
1037 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1038 return 0;
1039 }
1040 if (hi2 != 0){ //extra large HID tags
1041 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1042 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1043 }
1044 else { //standard HID tags <38 bits
1045 uint8_t fmtLen = 0;
1046 uint32_t fc = 0;
1047 uint32_t cardnum = 0;
1048 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1049 uint32_t lo2=0;
1050 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1051 uint8_t idx3 = 1;
1052 while(lo2>1){ //find last bit set to 1 (format len bit)
1053 lo2=lo2>>1;
1054 idx3++;
1055 }
1056 fmtLen =idx3+19;
1057 fc =0;
1058 cardnum=0;
1059 if(fmtLen==26){
1060 cardnum = (lo>>1)&0xFFFF;
1061 fc = (lo>>17)&0xFF;
1062 }
1063 if(fmtLen==34){
1064 cardnum = (lo>>1)&0xFFFF;
1065 fc= ((hi&1)<<15)|(lo>>17);
1066 }
1067 if(fmtLen==35){
1068 cardnum = (lo>>1)&0xFFFFF;
1069 fc = ((hi&1)<<11)|(lo>>21);
1070 }
1071 }
1072 else { //if bit 38 is not set then 37 bit format is used
1073 fmtLen = 37;
1074 fc = 0;
1075 cardnum = 0;
1076 if(fmtLen == 37){
1077 cardnum = (lo>>1)&0x7FFFF;
1078 fc = ((hi&0xF)<<12)|(lo>>20);
1079 }
1080 }
1081 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1082 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1083 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1084 }
1085 setDemodBuf(BitStream,BitLen,idx);
1086 if (g_debugMode){
1087 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1088 printDemodBuff();
1089 }
1090 return 1;
1091 }
1092
1093 //by marshmellow
1094 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1095 //print full Paradox Prox ID and some bit format details if found
1096 int CmdFSKdemodParadox(const char *Cmd)
1097 {
1098 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1099 uint32_t hi2=0, hi=0, lo=0;
1100
1101 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1102 size_t BitLen = getFromGraphBuf(BitStream);
1103 if (BitLen==0) return 0;
1104 //get binary from fsk wave
1105 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1106 if (idx<0){
1107 if (g_debugMode){
1108 if (idx==-1){
1109 PrintAndLog("DEBUG: Just Noise Detected");
1110 } else if (idx == -2) {
1111 PrintAndLog("DEBUG: Error demoding fsk");
1112 } else if (idx == -3) {
1113 PrintAndLog("DEBUG: Preamble not found");
1114 } else if (idx == -4) {
1115 PrintAndLog("DEBUG: Error in Manchester data");
1116 } else {
1117 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1118 }
1119 }
1120 return 0;
1121 }
1122 if (hi2==0 && hi==0 && lo==0){
1123 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1124 return 0;
1125 }
1126 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1127 uint32_t cardnum = (lo>>10)&0xFFFF;
1128 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1129 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1130 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1131
1132 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1133 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1134 setDemodBuf(BitStream,BitLen,idx);
1135 if (g_debugMode){
1136 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1137 printDemodBuff();
1138 }
1139 return 1;
1140 }
1141
1142 //by marshmellow
1143 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1144 //print ioprox ID and some format details
1145 int CmdFSKdemodIO(const char *Cmd)
1146 {
1147 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1148 //set defaults
1149 int idx=0;
1150 //something in graphbuffer?
1151 if (GraphTraceLen < 65) {
1152 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1153 return 0;
1154 }
1155 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1156 size_t BitLen = getFromGraphBuf(BitStream);
1157 if (BitLen==0) return 0;
1158
1159 //get binary from fsk wave
1160 idx = IOdemodFSK(BitStream,BitLen);
1161 if (idx<0){
1162 if (g_debugMode){
1163 if (idx==-1){
1164 PrintAndLog("DEBUG: Just Noise Detected");
1165 } else if (idx == -2) {
1166 PrintAndLog("DEBUG: not enough samples");
1167 } else if (idx == -3) {
1168 PrintAndLog("DEBUG: error during fskdemod");
1169 } else if (idx == -4) {
1170 PrintAndLog("DEBUG: Preamble not found");
1171 } else if (idx == -5) {
1172 PrintAndLog("DEBUG: Separator bits not found");
1173 } else {
1174 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1175 }
1176 }
1177 return 0;
1178 }
1179 if (idx==0){
1180 if (g_debugMode){
1181 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1182 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1183 }
1184 return 0;
1185 }
1186 //Index map
1187 //0 10 20 30 40 50 60
1188 //| | | | | | |
1189 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1190 //-----------------------------------------------------------------------------
1191 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1192 //
1193 //XSF(version)facility:codeone+codetwo (raw)
1194 //Handle the data
1195 if (idx+64>BitLen) {
1196 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1197 return 0;
1198 }
1199 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]);
1200 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]);
1201 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]);
1202 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]);
1203 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]);
1204 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]);
1205 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]);
1206
1207 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1208 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1209 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1210 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1211 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1212 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1213 uint16_t calccrc = 0;
1214
1215 for (uint8_t i=1; i<6; ++i){
1216 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1217 }
1218 calccrc &= 0xff;
1219 calccrc = 0xff - calccrc;
1220
1221 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1222
1223 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1224 setDemodBuf(BitStream,64,idx);
1225 if (g_debugMode){
1226 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1227 printDemodBuff();
1228 }
1229 return 1;
1230 }
1231
1232 //by marshmellow
1233 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1234 //print full AWID Prox ID and some bit format details if found
1235 int CmdFSKdemodAWID(const char *Cmd)
1236 {
1237
1238 //int verbose=1;
1239 //sscanf(Cmd, "%i", &verbose);
1240
1241 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1242 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1243 size_t size = getFromGraphBuf(BitStream);
1244 if (size==0) return 0;
1245
1246 //get binary from fsk wave
1247 int idx = AWIDdemodFSK(BitStream, &size);
1248 if (idx<=0){
1249 if (g_debugMode==1){
1250 if (idx == -1)
1251 PrintAndLog("DEBUG: Error - not enough samples");
1252 else if (idx == -2)
1253 PrintAndLog("DEBUG: Error - only noise found");
1254 else if (idx == -3)
1255 PrintAndLog("DEBUG: Error - problem during FSK demod");
1256 else if (idx == -4)
1257 PrintAndLog("DEBUG: Error - AWID preamble not found");
1258 else if (idx == -5)
1259 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1260 else
1261 PrintAndLog("DEBUG: Error %d",idx);
1262 }
1263 return 0;
1264 }
1265
1266 // Index map
1267 // 0 10 20 30 40 50 60
1268 // | | | | | | |
1269 // 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
1270 // -----------------------------------------------------------------------------
1271 // 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
1272 // 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
1273 // |---26 bit---| |-----117----||-------------142-------------|
1274 // b = format bit len, o = odd parity of last 3 bits
1275 // f = facility code, c = card number
1276 // w = wiegand parity
1277 // (26 bit format shown)
1278
1279 //get raw ID before removing parities
1280 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1281 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1282 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1283 setDemodBuf(BitStream,96,idx);
1284
1285 size = removeParity(BitStream, idx+8, 4, 1, 88);
1286 if (size != 66){
1287 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1288 return 0;
1289 }
1290 // ok valid card found!
1291
1292 // Index map
1293 // 0 10 20 30 40 50 60
1294 // | | | | | | |
1295 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1296 // -----------------------------------------------------------------------------
1297 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1298 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1299 // |26 bit| |-117--| |-----142------|
1300 // b = format bit len, o = odd parity of last 3 bits
1301 // f = facility code, c = card number
1302 // w = wiegand parity
1303 // (26 bit format shown)
1304
1305 uint32_t fc = 0;
1306 uint32_t cardnum = 0;
1307 uint32_t code1 = 0;
1308 uint32_t code2 = 0;
1309 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1310 if (fmtLen==26){
1311 fc = bytebits_to_byte(BitStream+9, 8);
1312 cardnum = bytebits_to_byte(BitStream+17, 16);
1313 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1314 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1315 } else {
1316 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1317 if (fmtLen>32){
1318 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1319 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1320 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1321 } else{
1322 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1323 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1324 }
1325 }
1326 if (g_debugMode){
1327 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1328 printDemodBuff();
1329 }
1330 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1331 return 1;
1332 }
1333
1334 //by marshmellow
1335 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1336 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1337 int CmdFSKdemodPyramid(const char *Cmd)
1338 {
1339 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1340 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1341 size_t size = getFromGraphBuf(BitStream);
1342 if (size==0) return 0;
1343
1344 //get binary from fsk wave
1345 int idx = PyramiddemodFSK(BitStream, &size);
1346 if (idx < 0){
1347 if (g_debugMode==1){
1348 if (idx == -5)
1349 PrintAndLog("DEBUG: Error - not enough samples");
1350 else if (idx == -1)
1351 PrintAndLog("DEBUG: Error - only noise found");
1352 else if (idx == -2)
1353 PrintAndLog("DEBUG: Error - problem during FSK demod");
1354 else if (idx == -3)
1355 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1356 else if (idx == -4)
1357 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1358 else
1359 PrintAndLog("DEBUG: Error - idx: %d",idx);
1360 }
1361 return 0;
1362 }
1363 // Index map
1364 // 0 10 20 30 40 50 60
1365 // | | | | | | |
1366 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1367 // -----------------------------------------------------------------------------
1368 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1369 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1370
1371 // 64 70 80 90 100 110 120
1372 // | | | | | | |
1373 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1374 // -----------------------------------------------------------------------------
1375 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1376 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1377 // |---115---||---------71---------|
1378 // s = format start bit, o = odd parity of last 7 bits
1379 // f = facility code, c = card number
1380 // w = wiegand parity, x = extra space for other formats
1381 // p = unknown checksum
1382 // (26 bit format shown)
1383
1384 //get bytes for checksum calc
1385 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1386 uint8_t csBuff[14] = {0x00};
1387 for (uint8_t i = 0; i < 13; i++){
1388 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1389 }
1390 //check checksum calc
1391 //checksum calc thanks to ICEMAN!!
1392 uint32_t checkCS = CRC8Maxim(csBuff,13);
1393
1394 //get raw ID before removing parities
1395 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1396 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1397 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1398 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1399 setDemodBuf(BitStream,128,idx);
1400
1401 size = removeParity(BitStream, idx+8, 8, 1, 120);
1402 if (size != 105){
1403 if (g_debugMode==1)
1404 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1405 return 0;
1406 }
1407
1408 // ok valid card found!
1409
1410 // Index map
1411 // 0 10 20 30 40 50 60 70
1412 // | | | | | | | |
1413 // 01234567890123456789012345678901234567890123456789012345678901234567890
1414 // -----------------------------------------------------------------------
1415 // 00000000000000000000000000000000000000000000000000000000000000000000000
1416 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1417
1418 // 71 80 90 100
1419 // | | | |
1420 // 1 2 34567890 1234567890123456 7 8901234
1421 // ---------------------------------------
1422 // 1 1 01110011 0000000001000110 0 1001010
1423 // s w ffffffff cccccccccccccccc w ppppppp
1424 // |--115-| |------71------|
1425 // s = format start bit, o = odd parity of last 7 bits
1426 // f = facility code, c = card number
1427 // w = wiegand parity, x = extra space for other formats
1428 // p = unknown checksum
1429 // (26 bit format shown)
1430
1431 //find start bit to get fmtLen
1432 int j;
1433 for (j=0; j<size; j++){
1434 if(BitStream[j]) break;
1435 }
1436 uint8_t fmtLen = size-j-8;
1437 uint32_t fc = 0;
1438 uint32_t cardnum = 0;
1439 uint32_t code1 = 0;
1440 //uint32_t code2 = 0;
1441 if (fmtLen==26){
1442 fc = bytebits_to_byte(BitStream+73, 8);
1443 cardnum = bytebits_to_byte(BitStream+81, 16);
1444 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1445 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);
1446 } else if (fmtLen==45){
1447 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1448 fc = bytebits_to_byte(BitStream+53, 10);
1449 cardnum = bytebits_to_byte(BitStream+63, 32);
1450 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1451 } else {
1452 cardnum = bytebits_to_byte(BitStream+81, 16);
1453 if (fmtLen>32){
1454 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1455 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1456 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1457 } else{
1458 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1459 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1460 }
1461 }
1462 if (checksum == checkCS)
1463 PrintAndLog("Checksum %02x passed", checksum);
1464 else
1465 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1466
1467 if (g_debugMode){
1468 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1469 printDemodBuff();
1470 }
1471 return 1;
1472 }
1473
1474 //by marshmellow
1475 //attempt to psk1 demod graph buffer
1476 int PSKDemod(const char *Cmd, bool verbose)
1477 {
1478 int invert=0;
1479 int clk=0;
1480 int maxErr=100;
1481 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1482 if (clk==1){
1483 invert=1;
1484 clk=0;
1485 }
1486 if (invert != 0 && invert != 1) {
1487 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1488 return 0;
1489 }
1490 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1491 size_t BitLen = getFromGraphBuf(BitStream);
1492 if (BitLen==0) return -1;
1493 uint8_t carrier=countFC(BitStream, BitLen, 0);
1494 if (carrier!=2 && carrier!=4 && carrier!=8){
1495 //invalid carrier
1496 return 0;
1497 }
1498 int errCnt=0;
1499 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1500 if (errCnt > maxErr){
1501 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1502 return 0;
1503 }
1504 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1505 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1506 return 0;
1507 }
1508 if (verbose || g_debugMode){
1509 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1510 if (errCnt>0){
1511 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1512 }
1513 }
1514 //prime demod buffer for output
1515 setDemodBuf(BitStream,BitLen,0);
1516 return 1;
1517 }
1518
1519 // Indala 26 bit decode
1520 // by marshmellow
1521 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1522 int CmdIndalaDecode(const char *Cmd)
1523 {
1524 int ans;
1525 if (strlen(Cmd)>0){
1526 ans = PSKDemod(Cmd, 0);
1527 } else{ //default to RF/32
1528 ans = PSKDemod("32", 0);
1529 }
1530
1531 if (!ans){
1532 if (g_debugMode==1)
1533 PrintAndLog("Error1: %d",ans);
1534 return 0;
1535 }
1536 uint8_t invert=0;
1537 ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
1538 if (ans < 1) {
1539 if (g_debugMode==1)
1540 PrintAndLog("Error2: %d",ans);
1541 return -1;
1542 }
1543 char showbits[251]={0x00};
1544 if (invert)
1545 if (g_debugMode==1)
1546 PrintAndLog("Had to invert bits");
1547
1548 //convert UID to HEX
1549 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1550 int idx;
1551 uid1=0;
1552 uid2=0;
1553 PrintAndLog("BitLen: %d",DemodBufferLen);
1554 if (DemodBufferLen==64){
1555 for( idx=0; idx<64; idx++) {
1556 uid1=(uid1<<1)|(uid2>>31);
1557 if (DemodBuffer[idx] == 0) {
1558 uid2=(uid2<<1)|0;
1559 showbits[idx]='0';
1560 } else {
1561 uid2=(uid2<<1)|1;
1562 showbits[idx]='1';
1563 }
1564 }
1565 showbits[idx]='\0';
1566 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1567 }
1568 else {
1569 uid3=0;
1570 uid4=0;
1571 uid5=0;
1572 uid6=0;
1573 uid7=0;
1574 for( idx=0; idx<DemodBufferLen; idx++) {
1575 uid1=(uid1<<1)|(uid2>>31);
1576 uid2=(uid2<<1)|(uid3>>31);
1577 uid3=(uid3<<1)|(uid4>>31);
1578 uid4=(uid4<<1)|(uid5>>31);
1579 uid5=(uid5<<1)|(uid6>>31);
1580 uid6=(uid6<<1)|(uid7>>31);
1581 if (DemodBuffer[idx] == 0) {
1582 uid7=(uid7<<1)|0;
1583 showbits[idx]='0';
1584 }
1585 else {
1586 uid7=(uid7<<1)|1;
1587 showbits[idx]='1';
1588 }
1589 }
1590 showbits[idx]='\0';
1591 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1592 }
1593 if (g_debugMode){
1594 PrintAndLog("DEBUG: printing demodbuffer:");
1595 printDemodBuff();
1596 }
1597 return 1;
1598 }
1599
1600 // by marshmellow
1601 // takes 3 arguments - clock, invert, maxErr as integers
1602 // attempts to demodulate nrz only
1603 // prints binary found and saves in demodbuffer for further commands
1604
1605 int NRZrawDemod(const char *Cmd, bool verbose)
1606 {
1607 int invert=0;
1608 int clk=0;
1609 int maxErr=100;
1610 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1611 if (clk==1){
1612 invert=1;
1613 clk=0;
1614 }
1615 if (invert != 0 && invert != 1) {
1616 PrintAndLog("Invalid argument: %s", Cmd);
1617 return 0;
1618 }
1619 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1620 size_t BitLen = getFromGraphBuf(BitStream);
1621 if (BitLen==0) return 0;
1622 int errCnt=0;
1623 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1624 if (errCnt > maxErr){
1625 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1626 return 0;
1627 }
1628 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1629 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1630 return 0;
1631 }
1632 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1633 //prime demod buffer for output
1634 setDemodBuf(BitStream,BitLen,0);
1635
1636 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1637 if (verbose || g_debugMode) {
1638 PrintAndLog("NRZ demoded bitstream:");
1639 // Now output the bitstream to the scrollback by line of 16 bits
1640 printDemodBuff();
1641 }
1642 return 1;
1643 }
1644
1645 int CmdNRZrawDemod(const char *Cmd)
1646 {
1647 char cmdp = param_getchar(Cmd, 0);
1648 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1649 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1650 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1651 PrintAndLog(" <invert>, 1 for invert output");
1652 PrintAndLog(" [set maximum allowed errors], default = 100.");
1653 PrintAndLog("");
1654 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1655 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1656 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1657 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1658 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");
1659 return 0;
1660 }
1661 return NRZrawDemod(Cmd, TRUE);
1662 }
1663
1664 // by marshmellow
1665 // takes 3 arguments - clock, invert, maxErr as integers
1666 // attempts to demodulate psk only
1667 // prints binary found and saves in demodbuffer for further commands
1668 int CmdPSK1rawDemod(const char *Cmd)
1669 {
1670 int ans;
1671 char cmdp = param_getchar(Cmd, 0);
1672 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1673 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1674 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1675 PrintAndLog(" <invert>, 1 for invert output");
1676 PrintAndLog(" [set maximum allowed errors], default = 100.");
1677 PrintAndLog("");
1678 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1679 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1680 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1681 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1682 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");
1683 return 0;
1684 }
1685 ans = PSKDemod(Cmd, TRUE);
1686 //output
1687 if (!ans){
1688 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1689 return 0;
1690 }
1691
1692 PrintAndLog("PSK1 demoded bitstream:");
1693 // Now output the bitstream to the scrollback by line of 16 bits
1694 printDemodBuff();
1695 return 1;
1696 }
1697
1698 // by marshmellow
1699 // takes same args as cmdpsk1rawdemod
1700 int CmdPSK2rawDemod(const char *Cmd)
1701 {
1702 int ans=0;
1703 char cmdp = param_getchar(Cmd, 0);
1704 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1705 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1706 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1707 PrintAndLog(" <invert>, 1 for invert output");
1708 PrintAndLog(" [set maximum allowed errors], default = 100.");
1709 PrintAndLog("");
1710 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1711 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1712 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1713 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1714 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");
1715 return 0;
1716 }
1717 ans=PSKDemod(Cmd, TRUE);
1718 if (!ans){
1719 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1720 return 0;
1721 }
1722 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1723 PrintAndLog("PSK2 demoded bitstream:");
1724 // Now output the bitstream to the scrollback by line of 16 bits
1725 printDemodBuff();
1726 return 1;
1727 }
1728
1729 // by marshmellow - combines all raw demod functions into one menu command
1730 int CmdRawDemod(const char *Cmd)
1731 {
1732 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1733
1734 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1735 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1736 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1737 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1738 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1739 PrintAndLog(" <options> see specific modulation help for optional parameters");
1740 PrintAndLog("");
1741 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1742 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1743 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1744 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1745 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1746 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1747 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1748 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1749 return 0;
1750 }
1751 char cmdp2 = Cmd[1];
1752 int ans = 0;
1753 if (cmdp == 'f' && cmdp2 == 's'){
1754 ans = CmdFSKrawdemod(Cmd+2);
1755 } else if(cmdp == 'a' && cmdp2 == 'b'){
1756 ans = Cmdaskbiphdemod(Cmd+2);
1757 } else if(cmdp == 'a' && cmdp2 == 'm'){
1758 ans = Cmdaskmandemod(Cmd+2);
1759 } else if(cmdp == 'a' && cmdp2 == 'r'){
1760 ans = Cmdaskrawdemod(Cmd+2);
1761 } else if(cmdp == 'n' && cmdp2 == 'r'){
1762 ans = CmdNRZrawDemod(Cmd+2);
1763 } else if(cmdp == 'p' && cmdp2 == '1'){
1764 ans = CmdPSK1rawDemod(Cmd+2);
1765 } else if(cmdp == 'p' && cmdp2 == '2'){
1766 ans = CmdPSK2rawDemod(Cmd+2);
1767 } else {
1768 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1769 }
1770 return ans;
1771 }
1772
1773 int CmdGrid(const char *Cmd)
1774 {
1775 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1776 PlotGridXdefault= PlotGridX;
1777 PlotGridYdefault= PlotGridY;
1778 RepaintGraphWindow();
1779 return 0;
1780 }
1781
1782 int CmdHexsamples(const char *Cmd)
1783 {
1784 int i, j;
1785 int requested = 0;
1786 int offset = 0;
1787 char string_buf[25];
1788 char* string_ptr = string_buf;
1789 uint8_t got[BIGBUF_SIZE];
1790
1791 sscanf(Cmd, "%i %i", &requested, &offset);
1792
1793 /* if no args send something */
1794 if (requested == 0) {
1795 requested = 8;
1796 }
1797 if (offset + requested > sizeof(got)) {
1798 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1799 return 0;
1800 }
1801
1802 GetFromBigBuf(got,requested,offset);
1803 WaitForResponse(CMD_ACK,NULL);
1804
1805 i = 0;
1806 for (j = 0; j < requested; j++) {
1807 i++;
1808 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1809 if (i == 8) {
1810 *(string_ptr - 1) = '\0'; // remove the trailing space
1811 PrintAndLog("%s", string_buf);
1812 string_buf[0] = '\0';
1813 string_ptr = string_buf;
1814 i = 0;
1815 }
1816 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1817 *(string_ptr - 1) = '\0';
1818 PrintAndLog("%s", string_buf);
1819 string_buf[0] = '\0';
1820 }
1821 }
1822 return 0;
1823 }
1824
1825 int CmdHide(const char *Cmd)
1826 {
1827 HideGraphWindow();
1828 return 0;
1829 }
1830
1831 //zero mean GraphBuffer
1832 int CmdHpf(const char *Cmd)
1833 {
1834 int i;
1835 int accum = 0;
1836
1837 for (i = 10; i < GraphTraceLen; ++i)
1838 accum += GraphBuffer[i];
1839 accum /= (GraphTraceLen - 10);
1840 for (i = 0; i < GraphTraceLen; ++i)
1841 GraphBuffer[i] -= accum;
1842
1843 RepaintGraphWindow();
1844 return 0;
1845 }
1846 typedef struct {
1847 uint8_t * buffer;
1848 uint32_t numbits;
1849 uint32_t position;
1850 }BitstreamOut;
1851
1852 bool _headBit( BitstreamOut *stream)
1853 {
1854 int bytepos = stream->position >> 3; // divide by 8
1855 int bitpos = (stream->position++) & 7; // mask out 00000111
1856 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1857 }
1858
1859 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1860 {
1861 int i;
1862 uint8_t val = 0;
1863 for(i =0 ; i < bits_per_sample; i++)
1864 {
1865 val |= (_headBit(b) << (7-i));
1866 }
1867 return val;
1868 }
1869
1870 int getSamples(const char *Cmd, bool silent)
1871 {
1872 //If we get all but the last byte in bigbuf,
1873 // we don't have to worry about remaining trash
1874 // in the last byte in case the bits-per-sample
1875 // does not line up on byte boundaries
1876
1877 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1878
1879 int n = strtol(Cmd, NULL, 0);
1880
1881 if (n == 0)
1882 n = sizeof(got);
1883
1884 if (n > sizeof(got))
1885 n = sizeof(got);
1886
1887 PrintAndLog("Reading %d bytes from device memory\n", n);
1888 GetFromBigBuf(got,n,0);
1889 PrintAndLog("Data fetched");
1890 UsbCommand response;
1891 WaitForResponse(CMD_ACK, &response);
1892 uint8_t bits_per_sample = 8;
1893
1894 //Old devices without this feature would send 0 at arg[0]
1895 if(response.arg[0] > 0)
1896 {
1897 sample_config *sc = (sample_config *) response.d.asBytes;
1898 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1899 , sc->decimation);
1900 bits_per_sample = sc->bits_per_sample;
1901 }
1902 if(bits_per_sample < 8)
1903 {
1904 PrintAndLog("Unpacking...");
1905 BitstreamOut bout = { got, bits_per_sample * n, 0};
1906 int j =0;
1907 for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
1908 uint8_t sample = getByte(bits_per_sample, &bout);
1909 GraphBuffer[j] = ((int) sample )- 128;
1910 }
1911 GraphTraceLen = j;
1912 PrintAndLog("Unpacked %d samples" , j );
1913 }else
1914 {
1915 for (int j = 0; j < n; j++) {
1916 GraphBuffer[j] = ((int)got[j]) - 128;
1917 }
1918 GraphTraceLen = n;
1919 }
1920
1921 RepaintGraphWindow();
1922 return 0;
1923 }
1924
1925 int CmdSamples(const char *Cmd)
1926 {
1927 return getSamples(Cmd, false);
1928 }
1929
1930 int CmdTuneSamples(const char *Cmd)
1931 {
1932 int timeout = 0;
1933 printf("\nMeasuring antenna characteristics, please wait...");
1934
1935 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
1936 SendCommand(&c);
1937
1938 UsbCommand resp;
1939 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
1940 timeout++;
1941 printf(".");
1942 if (timeout > 7) {
1943 PrintAndLog("\nNo response from Proxmark. Aborting...");
1944 return 1;
1945 }
1946 }
1947
1948 int peakv, peakf;
1949 int vLf125, vLf134, vHf;
1950 vLf125 = resp.arg[0] & 0xffff;
1951 vLf134 = resp.arg[0] >> 16;
1952 vHf = resp.arg[1] & 0xffff;;
1953 peakf = resp.arg[2] & 0xffff;
1954 peakv = resp.arg[2] >> 16;
1955 PrintAndLog("");
1956 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
1957 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
1958 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
1959 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
1960
1961 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
1962 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
1963 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1964 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1965
1966 if (peakv < LF_UNUSABLE_V)
1967 PrintAndLog("# Your LF antenna is unusable.");
1968 else if (peakv < LF_MARGINAL_V)
1969 PrintAndLog("# Your LF antenna is marginal.");
1970 if (vHf < HF_UNUSABLE_V)
1971 PrintAndLog("# Your HF antenna is unusable.");
1972 else if (vHf < HF_MARGINAL_V)
1973 PrintAndLog("# Your HF antenna is marginal.");
1974
1975 if (peakv >= LF_UNUSABLE_V) {
1976 for (int i = 0; i < 256; i++) {
1977 GraphBuffer[i] = resp.d.asBytes[i] - 128;
1978 }
1979 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
1980 PrintAndLog("\n");
1981 GraphTraceLen = 256;
1982 ShowGraphWindow();
1983 RepaintGraphWindow();
1984 }
1985
1986 return 0;
1987 }
1988
1989
1990 int CmdLoad(const char *Cmd)
1991 {
1992 char filename[FILE_PATH_SIZE] = {0x00};
1993 int len = 0;
1994
1995 len = strlen(Cmd);
1996 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1997 memcpy(filename, Cmd, len);
1998
1999 FILE *f = fopen(filename, "r");
2000 if (!f) {
2001 PrintAndLog("couldn't open '%s'", filename);
2002 return 0;
2003 }
2004
2005 GraphTraceLen = 0;
2006 char line[80];
2007 while (fgets(line, sizeof (line), f)) {
2008 GraphBuffer[GraphTraceLen] = atoi(line);
2009 GraphTraceLen++;
2010 }
2011 fclose(f);
2012 PrintAndLog("loaded %d samples", GraphTraceLen);
2013 RepaintGraphWindow();
2014 return 0;
2015 }
2016
2017 int CmdLtrim(const char *Cmd)
2018 {
2019 int ds = atoi(Cmd);
2020
2021 for (int i = ds; i < GraphTraceLen; ++i)
2022 GraphBuffer[i-ds] = GraphBuffer[i];
2023 GraphTraceLen -= ds;
2024
2025 RepaintGraphWindow();
2026 return 0;
2027 }
2028
2029 // trim graph to input argument length
2030 int CmdRtrim(const char *Cmd)
2031 {
2032 int ds = atoi(Cmd);
2033
2034 GraphTraceLen = ds;
2035
2036 RepaintGraphWindow();
2037 return 0;
2038 }
2039
2040 int CmdNorm(const char *Cmd)
2041 {
2042 int i;
2043 int max = INT_MIN, min = INT_MAX;
2044
2045 for (i = 10; i < GraphTraceLen; ++i) {
2046 if (GraphBuffer[i] > max)
2047 max = GraphBuffer[i];
2048 if (GraphBuffer[i] < min)
2049 min = GraphBuffer[i];
2050 }
2051
2052 if (max != min) {
2053 for (i = 0; i < GraphTraceLen; ++i) {
2054 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2055 (max - min);
2056 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2057 }
2058 }
2059 RepaintGraphWindow();
2060 return 0;
2061 }
2062
2063 int CmdPlot(const char *Cmd)
2064 {
2065 ShowGraphWindow();
2066 return 0;
2067 }
2068
2069 int CmdSave(const char *Cmd)
2070 {
2071 char filename[FILE_PATH_SIZE] = {0x00};
2072 int len = 0;
2073
2074 len = strlen(Cmd);
2075 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2076 memcpy(filename, Cmd, len);
2077
2078
2079 FILE *f = fopen(filename, "w");
2080 if(!f) {
2081 PrintAndLog("couldn't open '%s'", filename);
2082 return 0;
2083 }
2084 int i;
2085 for (i = 0; i < GraphTraceLen; i++) {
2086 fprintf(f, "%d\n", GraphBuffer[i]);
2087 }
2088 fclose(f);
2089 PrintAndLog("saved to '%s'", Cmd);
2090 return 0;
2091 }
2092
2093 int CmdScale(const char *Cmd)
2094 {
2095 CursorScaleFactor = atoi(Cmd);
2096 if (CursorScaleFactor == 0) {
2097 PrintAndLog("bad, can't have zero scale");
2098 CursorScaleFactor = 1;
2099 }
2100 RepaintGraphWindow();
2101 return 0;
2102 }
2103
2104 int CmdDirectionalThreshold(const char *Cmd)
2105 {
2106 int8_t upThres = param_get8(Cmd, 0);
2107 int8_t downThres = param_get8(Cmd, 1);
2108
2109 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2110
2111 int lastValue = GraphBuffer[0];
2112 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2113
2114 for (int i = 1; i < GraphTraceLen; ++i) {
2115 // Apply first threshold to samples heading up
2116 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2117 {
2118 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2119 GraphBuffer[i] = 1;
2120 }
2121 // Apply second threshold to samples heading down
2122 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2123 {
2124 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2125 GraphBuffer[i] = -1;
2126 }
2127 else
2128 {
2129 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2130 GraphBuffer[i] = GraphBuffer[i-1];
2131
2132 }
2133 }
2134 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2135 RepaintGraphWindow();
2136 return 0;
2137 }
2138
2139 int CmdZerocrossings(const char *Cmd)
2140 {
2141 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2142 CmdHpf("");
2143
2144 int sign = 1;
2145 int zc = 0;
2146 int lastZc = 0;
2147
2148 for (int i = 0; i < GraphTraceLen; ++i) {
2149 if (GraphBuffer[i] * sign >= 0) {
2150 // No change in sign, reproduce the previous sample count.
2151 zc++;
2152 GraphBuffer[i] = lastZc;
2153 } else {
2154 // Change in sign, reset the sample count.
2155 sign = -sign;
2156 GraphBuffer[i] = lastZc;
2157 if (sign > 0) {
2158 lastZc = zc;
2159 zc = 0;
2160 }
2161 }
2162 }
2163
2164 RepaintGraphWindow();
2165 return 0;
2166 }
2167
2168 static command_t CommandTable[] =
2169 {
2170 {"help", CmdHelp, 1, "This help"},
2171 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 25)"},
2172 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2173 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2174 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2175 {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2176 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2177 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2178 {"dec", CmdDec, 1, "Decimate samples"},
2179 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2180 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2181 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2182 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2183 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2184 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2185 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2186 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2187 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2188 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2189 {"hide", CmdHide, 1, "Hide graph window"},
2190 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2191 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2192 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2193 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2194 {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream in DemodBuffer"},
2195 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2196 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2197 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
2198 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2199 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2200 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2201 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2202 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2203 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2204 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2205 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2206 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2207 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2208 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2209 {NULL, NULL, 0, NULL}
2210 };
2211
2212 int CmdData(const char *Cmd)
2213 {
2214 CmdsParse(CommandTable, Cmd);
2215 return 0;
2216 }
2217
2218 int CmdHelp(const char *Cmd)
2219 {
2220 CmdsHelp(CommandTable);
2221 return 0;
2222 }
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