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[proxmark3-svn] / client / cmddata.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Data and Graph commands
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h> // also included in util.h
12 #include <string.h> // also included in util.h
13 #include <limits.h> // for CmdNorm INT_MIN && INT_MAX
14 #include "data.h" // also included in util.h
15 #include "cmddata.h"
16 #include "util.h"
17 #include "cmdmain.h"
18 #include "proxmark3.h"
19 #include "ui.h" // for show graph controls
20 #include "graph.h" // for graph data
21 #include "cmdparser.h"// already included in cmdmain.h
22 #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h
23 #include "lfdemod.h" // for demod code
24 #include "crc.h" // for pyramid checksum maxim
25 #include "crc16.h" // for FDXB demod checksum
26 #include "loclass/cipherutils.h" // for decimating samples in getsamples
27
28 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
29 uint8_t g_debugMode=0;
30 size_t DemodBufferLen=0;
31 static int CmdHelp(const char *Cmd);
32
33 //set the demod buffer with given array of binary (one bit per byte)
34 //by marshmellow
35 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
36 {
37 if (buff == NULL)
38 return;
39
40 if ( size >= MAX_DEMOD_BUF_LEN)
41 size = MAX_DEMOD_BUF_LEN;
42
43 size_t i = 0;
44 for (; i < size; i++){
45 DemodBuffer[i]=buff[startIdx++];
46 }
47 DemodBufferLen=size;
48 return;
49 }
50
51 int CmdSetDebugMode(const char *Cmd)
52 {
53 int demod=0;
54 sscanf(Cmd, "%i", &demod);
55 g_debugMode=(uint8_t)demod;
56 return 1;
57 }
58
59 int usage_data_printdemodbuf(){
60 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
61 PrintAndLog("Options:");
62 PrintAndLog(" h This help");
63 PrintAndLog(" x output in hex (omit for binary output)");
64 PrintAndLog(" o <offset> enter offset in # of bits");
65 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
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 uint32_t offset = 0; //could be size_t but no param_get16...
91 uint32_t length = 512;
92 char cmdp = 0;
93 while(param_getchar(Cmd, cmdp) != 0x00)
94 {
95 switch(param_getchar(Cmd, cmdp))
96 {
97 case 'h':
98 case 'H':
99 return usage_data_printdemodbuf();
100 case 'x':
101 case 'X':
102 hexMode = true;
103 cmdp++;
104 break;
105 case 'o':
106 case 'O':
107 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
108 if (!offset) errors = true;
109 cmdp += 2;
110 break;
111 case 'l':
112 case 'L':
113 length = param_get32ex(Cmd, cmdp+1, 512, 10);
114 if (!length) errors = true;
115 cmdp += 2;
116 break;
117 default:
118 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
119 errors = true;
120 break;
121 }
122 if(errors) break;
123 }
124 //Validations
125 if(errors) return usage_data_printdemodbuf();
126 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
127 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
128
129 if (hexMode){
130 char *buf = (char *) (DemodBuffer + offset);
131 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
132 numBits = binarraytohex(hex, buf, numBits);
133 if (numBits==0) return 0;
134 PrintAndLog("DemodBuffer: %s",hex);
135 } else {
136 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
137 }
138 return 1;
139 }
140
141 //by marshmellow
142 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
143 int CmdGetBitStream(const char *Cmd)
144 {
145 int i;
146 CmdHpf(Cmd);
147 for (i = 0; i < GraphTraceLen; i++) {
148 if (GraphBuffer[i] >= 1) {
149 GraphBuffer[i] = 1;
150 } else {
151 GraphBuffer[i] = 0;
152 }
153 }
154 RepaintGraphWindow();
155 return 0;
156 }
157
158 //by marshmellow
159 //print 64 bit EM410x ID in multiple formats
160 void printEM410x(uint32_t hi, uint64_t id)
161 {
162 if (id || hi){
163 uint64_t iii=1;
164 uint64_t id2lo=0;
165 uint32_t ii=0;
166 uint32_t i=0;
167 for (ii=5; ii>0;ii--){
168 for (i=0;i<8;i++){
169 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
170 }
171 }
172 if (hi){
173 //output 88 bit em id
174 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
175 } else{
176 //output 40 bit em id
177 PrintAndLog("\nEM TAG ID : %010llX", id);
178 PrintAndLog("Unique TAG ID : %010llX", id2lo);
179 PrintAndLog("\nPossible de-scramble patterns");
180 PrintAndLog("HoneyWell IdentKey {");
181 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
182 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
183 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
184 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
185 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
186 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
187 PrintAndLog("DEZ 14/IK2 : %014lld",id);
188 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
189 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
190 (id2lo & 0xf000000000) >> 36,
191 (id2lo & 0x0f00000000) >> 32,
192 (id2lo & 0x00f0000000) >> 28,
193 (id2lo & 0x000f000000) >> 24,
194 (id2lo & 0x0000f00000) >> 20,
195 (id2lo & 0x00000f0000) >> 16,
196 (id2lo & 0x000000f000) >> 12,
197 (id2lo & 0x0000000f00) >> 8,
198 (id2lo & 0x00000000f0) >> 4,
199 (id2lo & 0x000000000f)
200 );
201 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
202 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
203 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
204
205 uint32_t p1id = (id & 0xFFFFFF);
206 uint8_t arr[32] = {0x00};
207 int i =0;
208 int j = 23;
209 for (; i < 24; ++i, --j ){
210 arr[i] = (p1id >> i) & 1;
211 }
212
213 uint32_t p1 = 0;
214
215 p1 |= arr[23] << 21;
216 p1 |= arr[22] << 23;
217 p1 |= arr[21] << 20;
218 p1 |= arr[20] << 22;
219
220 p1 |= arr[19] << 18;
221 p1 |= arr[18] << 16;
222 p1 |= arr[17] << 19;
223 p1 |= arr[16] << 17;
224
225 p1 |= arr[15] << 13;
226 p1 |= arr[14] << 15;
227 p1 |= arr[13] << 12;
228 p1 |= arr[12] << 14;
229
230 p1 |= arr[11] << 6;
231 p1 |= arr[10] << 2;
232 p1 |= arr[9] << 7;
233 p1 |= arr[8] << 1;
234
235 p1 |= arr[7] << 0;
236 p1 |= arr[6] << 8;
237 p1 |= arr[5] << 11;
238 p1 |= arr[4] << 3;
239
240 p1 |= arr[3] << 10;
241 p1 |= arr[2] << 4;
242 p1 |= arr[1] << 5;
243 p1 |= arr[0] << 9;
244 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
245
246 uint16_t sebury1 = id & 0xFFFF;
247 uint8_t sebury2 = (id >> 16) & 0x7F;
248 uint32_t sebury3 = id & 0x7FFFFF;
249 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
250 }
251 }
252 return;
253 }
254
255 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
256 {
257 size_t idx = 0;
258 size_t BitLen = DemodBufferLen;
259 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
260 memcpy(BitStream, DemodBuffer, BitLen);
261 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
262 //set GraphBuffer for clone or sim command
263 setDemodBuf(BitStream, BitLen, idx);
264 if (g_debugMode){
265 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
266 printDemodBuff();
267 }
268 if (verbose){
269 PrintAndLog("EM410x pattern found: ");
270 printEM410x(*hi, *lo);
271 }
272 return 1;
273 }
274 return 0;
275 }
276
277 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
278 {
279 bool st = TRUE;
280 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
281 return AskEm410xDecode(verbose, hi, lo);
282 }
283
284 //by marshmellow
285 //takes 3 arguments - clock, invert and maxErr as integers
286 //attempts to demodulate ask while decoding manchester
287 //prints binary found and saves in graphbuffer for further commands
288 int CmdAskEM410xDemod(const char *Cmd)
289 {
290 char cmdp = param_getchar(Cmd, 0);
291 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
292 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
293 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
294 PrintAndLog(" <invert>, 1 for invert output");
295 PrintAndLog(" [set maximum allowed errors], default = 100.");
296 PrintAndLog("");
297 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
298 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
299 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
300 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
301 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
302 return 0;
303 }
304 uint64_t lo = 0;
305 uint32_t hi = 0;
306 return AskEm410xDemod(Cmd, &hi, &lo, true);
307 }
308
309 //by marshmellow
310 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
311 // (amp may not be needed anymore)
312 //verbose will print results and demoding messages
313 //emSearch will auto search for EM410x format in bitstream
314 //askType switches decode: ask/raw = 0, ask/manchester = 1
315 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
316 int invert=0;
317 int clk=0;
318 int maxErr=100;
319 int maxLen=0;
320 uint8_t askAmp = 0;
321 char amp = param_getchar(Cmd, 0);
322 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
323 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
324 if (!maxLen) maxLen = BIGBUF_SIZE;
325 if (invert != 0 && invert != 1) {
326 PrintAndLog("Invalid argument: %s", Cmd);
327 return 0;
328 }
329 if (clk==1){
330 invert=1;
331 clk=0;
332 }
333 if (amp == 'a' || amp == 'A') askAmp=1;
334 size_t BitLen = getFromGraphBuf(BitStream);
335 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
336 if (BitLen<255) return 0;
337 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
338 int foundclk = 0;
339 bool st = false;
340 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
341 if (st) {
342 *stCheck = st;
343 clk = (clk == 0) ? foundclk : clk;
344 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
345 }
346 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
347 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
348 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
349 return 0;
350 }
351 if (errCnt>maxErr){
352 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
353 return 0;
354 }
355 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
356
357 //output
358 setDemodBuf(BitStream,BitLen,0);
359 if (verbose || g_debugMode){
360 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
361 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
362 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
363 // Now output the bitstream to the scrollback by line of 16 bits
364 printDemodBuff();
365
366 }
367 uint64_t lo = 0;
368 uint32_t hi = 0;
369 if (emSearch){
370 AskEm410xDecode(true, &hi, &lo);
371 }
372 return 1;
373 }
374 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
375 bool st = false;
376 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
377 }
378
379 //by marshmellow
380 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
381 //attempts to demodulate ask while decoding manchester
382 //prints binary found and saves in graphbuffer for further commands
383 int Cmdaskmandemod(const char *Cmd)
384 {
385 char cmdp = param_getchar(Cmd, 0);
386 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
387 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
388 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
389 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
390 PrintAndLog(" <invert>, 1 to invert output");
391 PrintAndLog(" [set maximum allowed errors], default = 100");
392 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
393 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
394 PrintAndLog("");
395 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
396 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
397 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
398 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
399 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");
400 return 0;
401 }
402 bool st = TRUE;
403 if (Cmd[0]=='s')
404 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
405 else if (Cmd[1] == 's')
406 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
407 else
408 return ASKDemod(Cmd, TRUE, TRUE, 1);
409 }
410
411 //by marshmellow
412 //manchester decode
413 //stricktly take 10 and 01 and convert to 0 and 1
414 int Cmdmandecoderaw(const char *Cmd)
415 {
416 int i =0;
417 int errCnt=0;
418 size_t size=0;
419 int invert=0;
420 int maxErr = 20;
421 char cmdp = param_getchar(Cmd, 0);
422 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
423 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
424 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
425 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
426 PrintAndLog(" [invert] invert output");
427 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
428 PrintAndLog("");
429 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
430 return 0;
431 }
432 if (DemodBufferLen==0) return 0;
433 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
434 int high=0,low=0;
435 for (;i<DemodBufferLen;++i){
436 if (DemodBuffer[i]>high) high=DemodBuffer[i];
437 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
438 BitStream[i]=DemodBuffer[i];
439 }
440 if (high>7 || low <0 ){
441 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
442 return 0;
443 }
444
445 sscanf(Cmd, "%i %i", &invert, &maxErr);
446 size=i;
447 errCnt=manrawdecode(BitStream, &size, invert);
448 if (errCnt>=maxErr){
449 PrintAndLog("Too many errors: %d",errCnt);
450 return 0;
451 }
452 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
453 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
454 if (errCnt==0){
455 uint64_t id = 0;
456 uint32_t hi = 0;
457 size_t idx=0;
458 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
459 //need to adjust to set bitstream back to manchester encoded data
460 //setDemodBuf(BitStream, size, idx);
461
462 printEM410x(hi, id);
463 }
464 }
465 return 1;
466 }
467
468 //by marshmellow
469 //biphase decode
470 //take 01 or 10 = 0 and 11 or 00 = 1
471 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
472 // and "invert" default = 0 if 1 it will invert output
473 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
474 int CmdBiphaseDecodeRaw(const char *Cmd)
475 {
476 size_t size=0;
477 int offset=0, invert=0, maxErr=20, errCnt=0;
478 char cmdp = param_getchar(Cmd, 0);
479 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
480 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
481 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
482 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
483 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
484 PrintAndLog("");
485 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
486 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
487 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
488 PrintAndLog("");
489 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
490 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
491 return 0;
492 }
493 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
494 if (DemodBufferLen==0){
495 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
496 return 0;
497 }
498 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
499 memcpy(BitStream, DemodBuffer, DemodBufferLen);
500 size = DemodBufferLen;
501 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
502 if (errCnt<0){
503 PrintAndLog("Error during decode:%d", errCnt);
504 return 0;
505 }
506 if (errCnt>maxErr){
507 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
508 return 0;
509 }
510
511 if (errCnt>0){
512 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
513 }
514 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
515 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
516
517 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
518 return 1;
519 }
520
521 //by marshmellow
522 // - ASK Demod then Biphase decode GraphBuffer samples
523 int ASKbiphaseDemod(const char *Cmd, bool verbose)
524 {
525 //ask raw demod GraphBuffer first
526 int offset=0, clk=0, invert=0, maxErr=0;
527 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
528
529 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
530 size_t size = getFromGraphBuf(BitStream);
531 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
532 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
533 if ( errCnt < 0 || errCnt > maxErr ) {
534 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
535 return 0;
536 }
537
538 //attempt to Biphase decode BitStream
539 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
540 if (errCnt < 0){
541 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
542 return 0;
543 }
544 if (errCnt > maxErr) {
545 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
546 return 0;
547 }
548 //success set DemodBuffer and return
549 setDemodBuf(BitStream, size, 0);
550 if (g_debugMode || verbose){
551 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
552 printDemodBuff();
553 }
554 return 1;
555 }
556 //by marshmellow - see ASKbiphaseDemod
557 int Cmdaskbiphdemod(const char *Cmd)
558 {
559 char cmdp = param_getchar(Cmd, 0);
560 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
561 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
562 PrintAndLog(" [offset], offset to begin biphase, default=0");
563 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
564 PrintAndLog(" <invert>, 1 to invert output");
565 PrintAndLog(" [set maximum allowed errors], default = 100");
566 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
567 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
568 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
569 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
570 PrintAndLog(" NOTE: any other arg must have previous args set to work");
571 PrintAndLog("");
572 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
573 PrintAndLog("");
574 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
575 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
576 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
577 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
578 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
579 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");
580 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");
581 return 0;
582 }
583 return ASKbiphaseDemod(Cmd, TRUE);
584 }
585
586 //by marshmellow
587 //attempts to demodulate and identify a G_Prox_II verex/chubb card
588 //WARNING: if it fails during some points it will destroy the DemodBuffer data
589 // but will leave the GraphBuffer intact.
590 //if successful it will push askraw data back to demod buffer ready for emulation
591 int CmdG_Prox_II_Demod(const char *Cmd)
592 {
593 if (!ASKbiphaseDemod(Cmd, FALSE)){
594 if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
595 return 0;
596 }
597 size_t size = DemodBufferLen;
598 //call lfdemod.c demod for gProxII
599 int ans = gProxII_Demod(DemodBuffer, &size);
600 if (ans < 0){
601 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
602 return 0;
603 }
604 //got a good demod of 96 bits
605 uint8_t ByteStream[8] = {0x00};
606 uint8_t xorKey=0;
607 size_t startIdx = ans + 6; //start after 6 bit preamble
608
609 uint8_t bits_no_spacer[90];
610 //so as to not mess with raw DemodBuffer copy to a new sample array
611 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
612 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
613 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
614 if (bitLen != 72) {
615 if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
616 return 0;
617 }
618 // get key and then get all 8 bytes of payload decoded
619 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
620 for (size_t idx = 0; idx < 8; idx++) {
621 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
622 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
623 }
624 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
625 //
626 uint8_t fmtLen = ByteStream[0]>>2;
627 uint32_t FC = 0;
628 uint32_t Card = 0;
629 //get raw 96 bits to print
630 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
631 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
632 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
633
634 if (fmtLen==36){
635 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
636 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
637 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
638 } else if(fmtLen==26){
639 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
640 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
641 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
642 } else {
643 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
644 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
645 }
646 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
647 setDemodBuf(DemodBuffer+ans, 96, 0);
648 return 1;
649 }
650
651 //by marshmellow
652 //see ASKDemod for what args are accepted
653 int CmdVikingDemod(const char *Cmd)
654 {
655 if (!ASKDemod(Cmd, false, false, 1)) {
656 if (g_debugMode) PrintAndLog("ASKDemod failed");
657 return 0;
658 }
659 size_t size = DemodBufferLen;
660 //call lfdemod.c demod for Viking
661 int ans = VikingDemod_AM(DemodBuffer, &size);
662 if (ans < 0) {
663 if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
664 return 0;
665 }
666 //got a good demod
667 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
668 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
669 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
670 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
671 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
672 PrintAndLog("Raw: %08X%08X", raw1,raw2);
673 setDemodBuf(DemodBuffer+ans, 64, 0);
674 return 1;
675 }
676
677 //by marshmellow - see ASKDemod
678 int Cmdaskrawdemod(const char *Cmd)
679 {
680 char cmdp = param_getchar(Cmd, 0);
681 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
682 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
683 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
684 PrintAndLog(" <invert>, 1 to invert output");
685 PrintAndLog(" [set maximum allowed errors], default = 100");
686 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
687 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
688 PrintAndLog("");
689 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
690 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
691 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
692 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
693 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
694 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");
695 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");
696 return 0;
697 }
698 return ASKDemod(Cmd, TRUE, FALSE, 0);
699 }
700
701 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
702 {
703 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
704 size_t Correlation = 0;
705 int maxSum = 0;
706 int lastMax = 0;
707 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
708 for (int i = 0; i < GraphTraceLen - window; ++i) {
709 int sum = 0;
710 for (int j = 0; j < window; ++j) {
711 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
712 }
713 CorrelBuffer[i] = sum;
714 if (sum >= maxSum-100 && sum <= maxSum+100){
715 //another max
716 Correlation = i-lastMax;
717 lastMax = i;
718 if (sum > maxSum) maxSum = sum;
719 } else if (sum > maxSum){
720 maxSum=sum;
721 lastMax = i;
722 }
723 }
724 if (Correlation==0){
725 //try again with wider margin
726 for (int i = 0; i < GraphTraceLen - window; i++){
727 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
728 //another max
729 Correlation = i-lastMax;
730 lastMax = i;
731 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
732 }
733 }
734 }
735 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
736
737 if (SaveGrph){
738 GraphTraceLen = GraphTraceLen - window;
739 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
740 RepaintGraphWindow();
741 }
742 return Correlation;
743 }
744
745 int usage_data_autocorr(void)
746 {
747 //print help
748 PrintAndLog("Usage: data autocorr [window] [g]");
749 PrintAndLog("Options: ");
750 PrintAndLog(" h This help");
751 PrintAndLog(" [window] window length for correlation - default = 4000");
752 PrintAndLog(" g save back to GraphBuffer (overwrite)");
753 return 0;
754 }
755
756 int CmdAutoCorr(const char *Cmd)
757 {
758 char cmdp = param_getchar(Cmd, 0);
759 if (cmdp == 'h' || cmdp == 'H')
760 return usage_data_autocorr();
761 int window = 4000; //set default
762 char grph=0;
763 bool updateGrph = FALSE;
764 sscanf(Cmd, "%i %c", &window, &grph);
765
766 if (window >= GraphTraceLen) {
767 PrintAndLog("window must be smaller than trace (%d samples)",
768 GraphTraceLen);
769 return 0;
770 }
771 if (grph == 'g') updateGrph=TRUE;
772 return AutoCorrelate(window, updateGrph, TRUE);
773 }
774
775 int CmdBitsamples(const char *Cmd)
776 {
777 int cnt = 0;
778 uint8_t got[12288];
779
780 GetFromBigBuf(got,sizeof(got),0);
781 WaitForResponse(CMD_ACK,NULL);
782
783 for (int j = 0; j < sizeof(got); j++) {
784 for (int k = 0; k < 8; k++) {
785 if(got[j] & (1 << (7 - k))) {
786 GraphBuffer[cnt++] = 1;
787 } else {
788 GraphBuffer[cnt++] = 0;
789 }
790 }
791 }
792 GraphTraceLen = cnt;
793 RepaintGraphWindow();
794 return 0;
795 }
796
797 int CmdBuffClear(const char *Cmd)
798 {
799 UsbCommand c = {CMD_BUFF_CLEAR};
800 SendCommand(&c);
801 ClearGraph(true);
802 return 0;
803 }
804
805 int CmdDec(const char *Cmd)
806 {
807 for (int i = 0; i < (GraphTraceLen / 2); ++i)
808 GraphBuffer[i] = GraphBuffer[i * 2];
809 GraphTraceLen /= 2;
810 PrintAndLog("decimated by 2");
811 RepaintGraphWindow();
812 return 0;
813 }
814 /**
815 * Undecimate - I'd call it 'interpolate', but we'll save that
816 * name until someone does an actual interpolation command, not just
817 * blindly repeating samples
818 * @param Cmd
819 * @return
820 */
821 int CmdUndec(const char *Cmd)
822 {
823 if(param_getchar(Cmd, 0) == 'h')
824 {
825 PrintAndLog("Usage: data undec [factor]");
826 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
827 PrintAndLog("Options: ");
828 PrintAndLog(" h This help");
829 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
830 PrintAndLog("Example: 'data undec 3'");
831 return 0;
832 }
833
834 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
835 //We have memory, don't we?
836 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
837 uint32_t g_index = 0 ,s_index = 0;
838 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
839 {
840 int count = 0;
841 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
842 swap[s_index+count] = GraphBuffer[g_index];
843 s_index += count;
844 g_index++;
845 }
846
847 memcpy(GraphBuffer, swap, s_index * sizeof(int));
848 GraphTraceLen = s_index;
849 RepaintGraphWindow();
850 return 0;
851 }
852
853 //by marshmellow
854 //shift graph zero up or down based on input + or -
855 int CmdGraphShiftZero(const char *Cmd)
856 {
857
858 int shift=0;
859 //set options from parameters entered with the command
860 sscanf(Cmd, "%i", &shift);
861 int shiftedVal=0;
862 for(int i = 0; i<GraphTraceLen; i++){
863 shiftedVal=GraphBuffer[i]+shift;
864 if (shiftedVal>127)
865 shiftedVal=127;
866 else if (shiftedVal<-127)
867 shiftedVal=-127;
868 GraphBuffer[i]= shiftedVal;
869 }
870 CmdNorm("");
871 return 0;
872 }
873
874 //by marshmellow
875 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
876 //similar to dirtheshold, threshold commands
877 //takes a threshold length which is the measured length between two samples then determines an edge
878 int CmdAskEdgeDetect(const char *Cmd)
879 {
880 int thresLen = 25;
881 sscanf(Cmd, "%i", &thresLen);
882
883 for(int i = 1; i<GraphTraceLen; i++){
884 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
885 GraphBuffer[i-1] = 127;
886 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
887 GraphBuffer[i-1] = -127;
888 }
889 RepaintGraphWindow();
890 return 0;
891 }
892
893 /* Print our clock rate */
894 // uses data from graphbuffer
895 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
896 int CmdDetectClockRate(const char *Cmd)
897 {
898 char cmdp = param_getchar(Cmd, 0);
899 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
900 PrintAndLog("Usage: data detectclock [modulation] <clock>");
901 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
902 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
903 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
904 PrintAndLog("");
905 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
906 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
907 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
908 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
909 }
910 int ans=0;
911 if (cmdp == 'a'){
912 ans = GetAskClock(Cmd+1, true, false);
913 } else if (cmdp == 'f'){
914 ans = GetFskClock("", true, false);
915 } else if (cmdp == 'n'){
916 ans = GetNrzClock("", true, false);
917 } else if (cmdp == 'p'){
918 ans = GetPskClock("", true, false);
919 } else {
920 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
921 }
922 return ans;
923 }
924
925 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
926 {
927 static char fType[8];
928 memset(fType, 0x00, 8);
929 char *fskType = fType;
930 if (fchigh==10 && fclow==8){
931 if (invert) //fsk2a
932 memcpy(fskType, "FSK2a", 5);
933 else //fsk2
934 memcpy(fskType, "FSK2", 4);
935 } else if (fchigh == 8 && fclow == 5) {
936 if (invert)
937 memcpy(fskType, "FSK1", 4);
938 else
939 memcpy(fskType, "FSK1a", 5);
940 } else {
941 memcpy(fskType, "FSK??", 5);
942 }
943 return fskType;
944 }
945
946 //by marshmellow
947 //fsk raw demod and print binary
948 //takes 4 arguments - Clock, invert, fchigh, fclow
949 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
950 int FSKrawDemod(const char *Cmd, bool verbose)
951 {
952 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
953 uint8_t rfLen, invert, fchigh, fclow;
954
955 //set defaults
956 //set options from parameters entered with the command
957 rfLen = param_get8(Cmd, 0);
958 invert = param_get8(Cmd, 1);
959 fchigh = param_get8(Cmd, 2);
960 fclow = param_get8(Cmd, 3);
961 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
962 if (rfLen==1) {
963 invert = 1; //if invert option only is used
964 rfLen = 0;
965 }
966 }
967
968 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
969 size_t BitLen = getFromGraphBuf(BitStream);
970 if (BitLen==0) return 0;
971 //get field clock lengths
972 uint16_t fcs=0;
973 if (!fchigh || !fclow) {
974 fcs = countFC(BitStream, BitLen, 1);
975 if (!fcs) {
976 fchigh = 10;
977 fclow = 8;
978 } else {
979 fchigh = (fcs >> 8) & 0x00FF;
980 fclow = fcs & 0x00FF;
981 }
982 }
983 //get bit clock length
984 if (!rfLen) {
985 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
986 if (!rfLen) rfLen = 50;
987 }
988 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
989 if (size > 0) {
990 setDemodBuf(BitStream, size, 0);
991
992 // Now output the bitstream to the scrollback by line of 16 bits
993 if (verbose || g_debugMode) {
994 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
995 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
996 printDemodBuff();
997 }
998
999 return 1;
1000 } else {
1001 if (g_debugMode) PrintAndLog("no FSK data found");
1002 }
1003 return 0;
1004 }
1005
1006 //by marshmellow
1007 //fsk raw demod and print binary
1008 //takes 4 arguments - Clock, invert, fchigh, fclow
1009 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1010 int CmdFSKrawdemod(const char *Cmd)
1011 {
1012 char cmdp = param_getchar(Cmd, 0);
1013 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1014 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1015 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1016 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1017 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1018 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1019 PrintAndLog("");
1020 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1021 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1022 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1023 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1024 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1025 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1026 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1027 return 0;
1028 }
1029 return FSKrawDemod(Cmd, TRUE);
1030 }
1031
1032 //by marshmellow (based on existing demod + holiman's refactor)
1033 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1034 //print full HID Prox ID and some bit format details if found
1035 int CmdFSKdemodHID(const char *Cmd)
1036 {
1037 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1038 uint32_t hi2=0, hi=0, lo=0;
1039
1040 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1041 size_t BitLen = getFromGraphBuf(BitStream);
1042 if (BitLen==0) return 0;
1043 //get binary from fsk wave
1044 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1045 if (idx<0){
1046 if (g_debugMode){
1047 if (idx==-1){
1048 PrintAndLog("DEBUG: Just Noise Detected");
1049 } else if (idx == -2) {
1050 PrintAndLog("DEBUG: Error demoding fsk");
1051 } else if (idx == -3) {
1052 PrintAndLog("DEBUG: Preamble not found");
1053 } else if (idx == -4) {
1054 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1055 } else {
1056 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1057 }
1058 }
1059 return 0;
1060 }
1061 if (hi2==0 && hi==0 && lo==0) {
1062 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1063 return 0;
1064 }
1065 if (hi2 != 0){ //extra large HID tags
1066 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1067 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1068 }
1069 else { //standard HID tags <38 bits
1070 uint8_t fmtLen = 0;
1071 uint32_t fc = 0;
1072 uint32_t cardnum = 0;
1073 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1074 uint32_t lo2=0;
1075 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1076 uint8_t idx3 = 1;
1077 while(lo2>1){ //find last bit set to 1 (format len bit)
1078 lo2=lo2>>1;
1079 idx3++;
1080 }
1081 fmtLen =idx3+19;
1082 fc =0;
1083 cardnum=0;
1084 if(fmtLen==26){
1085 cardnum = (lo>>1)&0xFFFF;
1086 fc = (lo>>17)&0xFF;
1087 }
1088 if(fmtLen==34){
1089 cardnum = (lo>>1)&0xFFFF;
1090 fc= ((hi&1)<<15)|(lo>>17);
1091 }
1092 if(fmtLen==35){
1093 cardnum = (lo>>1)&0xFFFFF;
1094 fc = ((hi&1)<<11)|(lo>>21);
1095 }
1096 }
1097 else { //if bit 38 is not set then 37 bit format is used
1098 fmtLen = 37;
1099 fc = 0;
1100 cardnum = 0;
1101 if(fmtLen == 37){
1102 cardnum = (lo>>1)&0x7FFFF;
1103 fc = ((hi&0xF)<<12)|(lo>>20);
1104 }
1105 }
1106 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1107 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1108 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1109 }
1110 setDemodBuf(BitStream,BitLen,idx);
1111 if (g_debugMode){
1112 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1113 printDemodBuff();
1114 }
1115 return 1;
1116 }
1117
1118 //by marshmellow
1119 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1120 //print full Paradox Prox ID and some bit format details if found
1121 int CmdFSKdemodParadox(const char *Cmd)
1122 {
1123 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1124 uint32_t hi2=0, hi=0, lo=0;
1125
1126 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1127 size_t BitLen = getFromGraphBuf(BitStream);
1128 if (BitLen==0) return 0;
1129 //get binary from fsk wave
1130 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1131 if (idx<0){
1132 if (g_debugMode){
1133 if (idx==-1){
1134 PrintAndLog("DEBUG: Just Noise Detected");
1135 } else if (idx == -2) {
1136 PrintAndLog("DEBUG: Error demoding fsk");
1137 } else if (idx == -3) {
1138 PrintAndLog("DEBUG: Preamble not found");
1139 } else if (idx == -4) {
1140 PrintAndLog("DEBUG: Error in Manchester data");
1141 } else {
1142 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1143 }
1144 }
1145 return 0;
1146 }
1147 if (hi2==0 && hi==0 && lo==0){
1148 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1149 return 0;
1150 }
1151 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1152 uint32_t cardnum = (lo>>10)&0xFFFF;
1153 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1154 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1155 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1156
1157 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1158 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1159 setDemodBuf(BitStream,BitLen,idx);
1160 if (g_debugMode){
1161 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1162 printDemodBuff();
1163 }
1164 return 1;
1165 }
1166
1167 //by marshmellow
1168 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1169 //print ioprox ID and some format details
1170 int CmdFSKdemodIO(const char *Cmd)
1171 {
1172 int idx=0;
1173 //something in graphbuffer?
1174 if (GraphTraceLen < 65) {
1175 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1176 return 0;
1177 }
1178 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1179 size_t BitLen = getFromGraphBuf(BitStream);
1180 if (BitLen==0) return 0;
1181
1182 //get binary from fsk wave
1183 idx = IOdemodFSK(BitStream,BitLen);
1184 if (idx<0){
1185 if (g_debugMode){
1186 if (idx==-1){
1187 PrintAndLog("DEBUG: Just Noise Detected");
1188 } else if (idx == -2) {
1189 PrintAndLog("DEBUG: not enough samples");
1190 } else if (idx == -3) {
1191 PrintAndLog("DEBUG: error during fskdemod");
1192 } else if (idx == -4) {
1193 PrintAndLog("DEBUG: Preamble not found");
1194 } else if (idx == -5) {
1195 PrintAndLog("DEBUG: Separator bits not found");
1196 } else {
1197 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1198 }
1199 }
1200 return 0;
1201 }
1202 if (idx==0){
1203 if (g_debugMode){
1204 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1205 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1206 }
1207 return 0;
1208 }
1209 //Index map
1210 //0 10 20 30 40 50 60
1211 //| | | | | | |
1212 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1213 //-----------------------------------------------------------------------------
1214 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1215 //
1216 //XSF(version)facility:codeone+codetwo (raw)
1217 //Handle the data
1218 if (idx+64>BitLen) {
1219 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1220 return 0;
1221 }
1222 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]);
1223 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]);
1224 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]);
1225 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]);
1226 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]);
1227 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]);
1228 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]);
1229
1230 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1231 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1232 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1233 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1234 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1235 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1236 uint16_t calccrc = 0;
1237
1238 for (uint8_t i=1; i<6; ++i){
1239 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1240 }
1241 calccrc &= 0xff;
1242 calccrc = 0xff - calccrc;
1243
1244 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1245
1246 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1247 setDemodBuf(BitStream,64,idx);
1248 if (g_debugMode){
1249 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1250 printDemodBuff();
1251 }
1252 return 1;
1253 }
1254
1255 //by marshmellow
1256 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1257 //print full AWID Prox ID and some bit format details if found
1258 int CmdFSKdemodAWID(const char *Cmd)
1259 {
1260 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1261 size_t size = getFromGraphBuf(BitStream);
1262 if (size==0) return 0;
1263
1264 //get binary from fsk wave
1265 int idx = AWIDdemodFSK(BitStream, &size);
1266 if (idx<=0){
1267 if (g_debugMode){
1268 if (idx == -1)
1269 PrintAndLog("DEBUG: Error - not enough samples");
1270 else if (idx == -2)
1271 PrintAndLog("DEBUG: Error - only noise found");
1272 else if (idx == -3)
1273 PrintAndLog("DEBUG: Error - problem during FSK demod");
1274 else if (idx == -4)
1275 PrintAndLog("DEBUG: Error - AWID preamble not found");
1276 else if (idx == -5)
1277 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1278 else
1279 PrintAndLog("DEBUG: Error %d",idx);
1280 }
1281 return 0;
1282 }
1283
1284 // Index map
1285 // 0 10 20 30 40 50 60
1286 // | | | | | | |
1287 // 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
1288 // -----------------------------------------------------------------------------
1289 // 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
1290 // 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
1291 // |---26 bit---| |-----117----||-------------142-------------|
1292 // b = format bit len, o = odd parity of last 3 bits
1293 // f = facility code, c = card number
1294 // w = wiegand parity
1295 // (26 bit format shown)
1296
1297 //get raw ID before removing parities
1298 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1299 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1300 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1301 setDemodBuf(BitStream,96,idx);
1302
1303 size = removeParity(BitStream, idx+8, 4, 1, 88);
1304 if (size != 66){
1305 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1306 return 0;
1307 }
1308 // ok valid card found!
1309
1310 // Index map
1311 // 0 10 20 30 40 50 60
1312 // | | | | | | |
1313 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1314 // -----------------------------------------------------------------------------
1315 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1316 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1317 // |26 bit| |-117--| |-----142------|
1318 // b = format bit len, o = odd parity of last 3 bits
1319 // f = facility code, c = card number
1320 // w = wiegand parity
1321 // (26 bit format shown)
1322
1323 uint32_t fc = 0;
1324 uint32_t cardnum = 0;
1325 uint32_t code1 = 0;
1326 uint32_t code2 = 0;
1327 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1328 if (fmtLen==26){
1329 fc = bytebits_to_byte(BitStream+9, 8);
1330 cardnum = bytebits_to_byte(BitStream+17, 16);
1331 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1332 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1333 } else {
1334 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1335 if (fmtLen>32){
1336 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1337 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1338 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1339 } else{
1340 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1341 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1342 }
1343 }
1344 if (g_debugMode){
1345 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1346 printDemodBuff();
1347 }
1348 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1349 return 1;
1350 }
1351
1352 //by marshmellow
1353 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1354 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1355 int CmdFSKdemodPyramid(const char *Cmd)
1356 {
1357 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1358 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1359 size_t size = getFromGraphBuf(BitStream);
1360 if (size==0) return 0;
1361
1362 //get binary from fsk wave
1363 int idx = PyramiddemodFSK(BitStream, &size);
1364 if (idx < 0){
1365 if (g_debugMode){
1366 if (idx == -5)
1367 PrintAndLog("DEBUG: Error - not enough samples");
1368 else if (idx == -1)
1369 PrintAndLog("DEBUG: Error - only noise found");
1370 else if (idx == -2)
1371 PrintAndLog("DEBUG: Error - problem during FSK demod");
1372 else if (idx == -3)
1373 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1374 else if (idx == -4)
1375 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1376 else
1377 PrintAndLog("DEBUG: Error - idx: %d",idx);
1378 }
1379 return 0;
1380 }
1381 // Index map
1382 // 0 10 20 30 40 50 60
1383 // | | | | | | |
1384 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1385 // -----------------------------------------------------------------------------
1386 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1387 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1388
1389 // 64 70 80 90 100 110 120
1390 // | | | | | | |
1391 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1392 // -----------------------------------------------------------------------------
1393 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1394 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1395 // |---115---||---------71---------|
1396 // s = format start bit, o = odd parity of last 7 bits
1397 // f = facility code, c = card number
1398 // w = wiegand parity, x = extra space for other formats
1399 // p = CRC8maxim checksum
1400 // (26 bit format shown)
1401
1402 //get bytes for checksum calc
1403 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1404 uint8_t csBuff[14] = {0x00};
1405 for (uint8_t i = 0; i < 13; i++){
1406 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1407 }
1408 //check checksum calc
1409 //checksum calc thanks to ICEMAN!!
1410 uint32_t checkCS = CRC8Maxim(csBuff,13);
1411
1412 //get raw ID before removing parities
1413 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1414 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1415 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1416 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1417 setDemodBuf(BitStream,128,idx);
1418
1419 size = removeParity(BitStream, idx+8, 8, 1, 120);
1420 if (size != 105){
1421 if (g_debugMode)
1422 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1423 return 0;
1424 }
1425
1426 // ok valid card found!
1427
1428 // Index map
1429 // 0 10 20 30 40 50 60 70
1430 // | | | | | | | |
1431 // 01234567890123456789012345678901234567890123456789012345678901234567890
1432 // -----------------------------------------------------------------------
1433 // 00000000000000000000000000000000000000000000000000000000000000000000000
1434 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1435
1436 // 71 80 90 100
1437 // | | | |
1438 // 1 2 34567890 1234567890123456 7 8901234
1439 // ---------------------------------------
1440 // 1 1 01110011 0000000001000110 0 1001010
1441 // s w ffffffff cccccccccccccccc w ppppppp
1442 // |--115-| |------71------|
1443 // s = format start bit, o = odd parity of last 7 bits
1444 // f = facility code, c = card number
1445 // w = wiegand parity, x = extra space for other formats
1446 // p = CRC8-Maxim checksum
1447 // (26 bit format shown)
1448
1449 //find start bit to get fmtLen
1450 int j;
1451 for (j=0; j < size; ++j){
1452 if(BitStream[j]) break;
1453 }
1454
1455 uint8_t fmtLen = size-j-8;
1456 uint32_t fc = 0;
1457 uint32_t cardnum = 0;
1458 uint32_t code1 = 0;
1459
1460 if ( fmtLen == 26 ){
1461 fc = bytebits_to_byte(BitStream+73, 8);
1462 cardnum = bytebits_to_byte(BitStream+81, 16);
1463 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1464 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);
1465 } else if (fmtLen == 45) {
1466 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1467 fc = bytebits_to_byte(BitStream+53, 10);
1468 cardnum = bytebits_to_byte(BitStream+63, 32);
1469 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1470 } else {
1471 cardnum = bytebits_to_byte(BitStream+81, 16);
1472 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1473 }
1474 if (checksum == checkCS)
1475 PrintAndLog("Checksum %02x passed", checksum);
1476 else
1477 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1478
1479 if (g_debugMode){
1480 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1481 printDemodBuff();
1482 }
1483 return 1;
1484 }
1485
1486 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1487 // 8 databits + 1 parity (1)
1488 // CIITT 16 chksum
1489 // NATIONAL CODE, ICAR database
1490 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1491 // FLAG (animal/non-animal)
1492 /*
1493 38 IDbits
1494 10 country code
1495 1 extra app bit
1496 14 reserved bits
1497 1 animal bit
1498 16 ccitt CRC chksum over 64bit ID CODE.
1499 24 appli bits.
1500
1501 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1502 */
1503 int CmdFDXBdemodBI(const char *Cmd){
1504
1505 int invert = 1;
1506 int clk = 32;
1507 int errCnt = 0;
1508 int maxErr = 0;
1509 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1510 size_t size = getFromGraphBuf(BitStream);
1511
1512 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1513 if ( errCnt < 0 || errCnt > maxErr ) {
1514 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1515 return 0;
1516 }
1517
1518 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1519 if (errCnt < 0 || errCnt > maxErr ) {
1520 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1521 return 0;
1522 }
1523
1524 int preambleIndex = FDXBdemodBI(BitStream, &size);
1525 if (preambleIndex < 0){
1526 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1527 return 0;
1528 }
1529 if (size != 128) {
1530 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1531 return 0;
1532 }
1533
1534 setDemodBuf(BitStream, 128, preambleIndex);
1535
1536 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1537 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1538 if ( size != 104 ) {
1539 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1540 return 0;
1541 }
1542 if (g_debugMode) {
1543 char *bin = sprint_bin_break(BitStream,size,16);
1544 PrintAndLog("DEBUG BinStream:\n%s",bin);
1545 }
1546 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1547 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1548
1549 //got a good demod
1550 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1551 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1552 uint8_t dataBlockBit = BitStream[48];
1553 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1554 uint8_t animalBit = BitStream[63];
1555 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1556 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1557
1558 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1559 uint8_t raw[8];
1560 num_to_bytes(rawid, 8, raw);
1561
1562 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1563
1564 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1565 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1566 PrintAndLog("National Code: %012llu", NationalCode);
1567 PrintAndLog("CountryCode: %04u", countryCode);
1568 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1569 PrintAndLog("reserved Code: %u", reservedCode);
1570 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1571 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1572 PrintAndLog("Extended: 0x%X\n", extended);
1573
1574 return 1;
1575 }
1576
1577
1578 //by marshmellow
1579 //attempt to psk1 demod graph buffer
1580 int PSKDemod(const char *Cmd, bool verbose)
1581 {
1582 int invert=0;
1583 int clk=0;
1584 int maxErr=100;
1585 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1586 if (clk==1){
1587 invert=1;
1588 clk=0;
1589 }
1590 if (invert != 0 && invert != 1) {
1591 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1592 return 0;
1593 }
1594 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1595 size_t BitLen = getFromGraphBuf(BitStream);
1596 if (BitLen==0) return 0;
1597 uint8_t carrier=countFC(BitStream, BitLen, 0);
1598 if (carrier!=2 && carrier!=4 && carrier!=8){
1599 //invalid carrier
1600 return 0;
1601 }
1602 if (g_debugMode){
1603 PrintAndLog("Carrier: rf/%d",carrier);
1604 }
1605 int errCnt=0;
1606 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1607 if (errCnt > maxErr){
1608 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1609 return 0;
1610 }
1611 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1612 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1613 return 0;
1614 }
1615 if (verbose || g_debugMode){
1616 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1617 if (errCnt>0){
1618 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1619 }
1620 }
1621 //prime demod buffer for output
1622 setDemodBuf(BitStream,BitLen,0);
1623 return 1;
1624 }
1625
1626 // Indala 26 bit decode
1627 // by marshmellow
1628 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1629 int CmdIndalaDecode(const char *Cmd)
1630 {
1631 int ans;
1632 if (strlen(Cmd)>0){
1633 ans = PSKDemod(Cmd, 0);
1634 } else{ //default to RF/32
1635 ans = PSKDemod("32", 0);
1636 }
1637
1638 if (!ans){
1639 if (g_debugMode)
1640 PrintAndLog("Error1: %d",ans);
1641 return 0;
1642 }
1643 uint8_t invert=0;
1644 size_t size = DemodBufferLen;
1645 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1646 if (startIdx < 0 || size > 224) {
1647 if (g_debugMode)
1648 PrintAndLog("Error2: %d",ans);
1649 return -1;
1650 }
1651 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1652 if (invert)
1653 if (g_debugMode)
1654 PrintAndLog("Had to invert bits");
1655
1656 PrintAndLog("BitLen: %d",DemodBufferLen);
1657 //convert UID to HEX
1658 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1659 uid1=bytebits_to_byte(DemodBuffer,32);
1660 uid2=bytebits_to_byte(DemodBuffer+32,32);
1661 if (DemodBufferLen==64){
1662 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1663 } else {
1664 uid3=bytebits_to_byte(DemodBuffer+64,32);
1665 uid4=bytebits_to_byte(DemodBuffer+96,32);
1666 uid5=bytebits_to_byte(DemodBuffer+128,32);
1667 uid6=bytebits_to_byte(DemodBuffer+160,32);
1668 uid7=bytebits_to_byte(DemodBuffer+192,32);
1669 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1670 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1671 }
1672 if (g_debugMode){
1673 PrintAndLog("DEBUG: printing demodbuffer:");
1674 printDemodBuff();
1675 }
1676 return 1;
1677 }
1678
1679 int CmdPSKNexWatch(const char *Cmd)
1680 {
1681 if (!PSKDemod("", false)) return 0;
1682 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};
1683 size_t startIdx = 0, size = DemodBufferLen;
1684 bool invert = false;
1685 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1686 // if didn't find preamble try again inverting
1687 if (!PSKDemod("1", false)) return 0;
1688 size = DemodBufferLen;
1689 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1690 invert = true;
1691 }
1692 if (size != 128) return 0;
1693 setDemodBuf(DemodBuffer, size, startIdx+4);
1694 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1695 //get ID
1696 uint32_t ID = 0;
1697 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1698 for (uint8_t idx=0; idx<8; idx++){
1699 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1700 }
1701 }
1702 //parity check (TBD)
1703
1704 //checksum check (TBD)
1705
1706 //output
1707 PrintAndLog("NexWatch ID: %d", ID);
1708 if (invert){
1709 PrintAndLog("Had to Invert - probably NexKey");
1710 for (uint8_t idx=0; idx<size; idx++)
1711 DemodBuffer[idx] ^= 1;
1712 }
1713
1714 CmdPrintDemodBuff("x");
1715 return 1;
1716 }
1717
1718 // by marshmellow
1719 // takes 3 arguments - clock, invert, maxErr as integers
1720 // attempts to demodulate nrz only
1721 // prints binary found and saves in demodbuffer for further commands
1722 int NRZrawDemod(const char *Cmd, bool verbose)
1723 {
1724 int invert=0;
1725 int clk=0;
1726 int maxErr=100;
1727 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1728 if (clk==1){
1729 invert=1;
1730 clk=0;
1731 }
1732 if (invert != 0 && invert != 1) {
1733 PrintAndLog("Invalid argument: %s", Cmd);
1734 return 0;
1735 }
1736 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1737 size_t BitLen = getFromGraphBuf(BitStream);
1738 if (BitLen==0) return 0;
1739 int errCnt=0;
1740 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1741 if (errCnt > maxErr){
1742 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1743 return 0;
1744 }
1745 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1746 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1747 return 0;
1748 }
1749 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1750 //prime demod buffer for output
1751 setDemodBuf(BitStream,BitLen,0);
1752
1753 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1754 if (verbose || g_debugMode) {
1755 PrintAndLog("NRZ demoded bitstream:");
1756 // Now output the bitstream to the scrollback by line of 16 bits
1757 printDemodBuff();
1758 }
1759 return 1;
1760 }
1761
1762 int CmdNRZrawDemod(const char *Cmd)
1763 {
1764 char cmdp = param_getchar(Cmd, 0);
1765 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1766 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1767 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1768 PrintAndLog(" <invert>, 1 for invert output");
1769 PrintAndLog(" [set maximum allowed errors], default = 100.");
1770 PrintAndLog("");
1771 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1772 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1773 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1774 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1775 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");
1776 return 0;
1777 }
1778 return NRZrawDemod(Cmd, TRUE);
1779 }
1780
1781 // by marshmellow
1782 // takes 3 arguments - clock, invert, maxErr as integers
1783 // attempts to demodulate psk only
1784 // prints binary found and saves in demodbuffer for further commands
1785 int CmdPSK1rawDemod(const char *Cmd)
1786 {
1787 int ans;
1788 char cmdp = param_getchar(Cmd, 0);
1789 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1790 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1791 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1792 PrintAndLog(" <invert>, 1 for invert output");
1793 PrintAndLog(" [set maximum allowed errors], default = 100.");
1794 PrintAndLog("");
1795 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1796 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1797 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1798 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1799 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");
1800 return 0;
1801 }
1802 ans = PSKDemod(Cmd, TRUE);
1803 //output
1804 if (!ans){
1805 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1806 return 0;
1807 }
1808
1809 PrintAndLog("PSK1 demoded bitstream:");
1810 // Now output the bitstream to the scrollback by line of 16 bits
1811 printDemodBuff();
1812 return 1;
1813 }
1814
1815 // by marshmellow
1816 // takes same args as cmdpsk1rawdemod
1817 int CmdPSK2rawDemod(const char *Cmd)
1818 {
1819 int ans=0;
1820 char cmdp = param_getchar(Cmd, 0);
1821 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1822 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1823 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1824 PrintAndLog(" <invert>, 1 for invert output");
1825 PrintAndLog(" [set maximum allowed errors], default = 100.");
1826 PrintAndLog("");
1827 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1828 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1829 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1830 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1831 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");
1832 return 0;
1833 }
1834 ans=PSKDemod(Cmd, TRUE);
1835 if (!ans){
1836 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1837 return 0;
1838 }
1839 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1840 PrintAndLog("PSK2 demoded bitstream:");
1841 // Now output the bitstream to the scrollback by line of 16 bits
1842 printDemodBuff();
1843 return 1;
1844 }
1845
1846 // by marshmellow - combines all raw demod functions into one menu command
1847 int CmdRawDemod(const char *Cmd)
1848 {
1849 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1850
1851 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1852 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1853 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1854 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1855 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1856 PrintAndLog(" <options> see specific modulation help for optional parameters");
1857 PrintAndLog("");
1858 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1859 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1860 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1861 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1862 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1863 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1864 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1865 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1866 return 0;
1867 }
1868 char cmdp2 = Cmd[1];
1869 int ans = 0;
1870 if (cmdp == 'f' && cmdp2 == 's'){
1871 ans = CmdFSKrawdemod(Cmd+2);
1872 } else if(cmdp == 'a' && cmdp2 == 'b'){
1873 ans = Cmdaskbiphdemod(Cmd+2);
1874 } else if(cmdp == 'a' && cmdp2 == 'm'){
1875 ans = Cmdaskmandemod(Cmd+2);
1876 } else if(cmdp == 'a' && cmdp2 == 'r'){
1877 ans = Cmdaskrawdemod(Cmd+2);
1878 } else if(cmdp == 'n' && cmdp2 == 'r'){
1879 ans = CmdNRZrawDemod(Cmd+2);
1880 } else if(cmdp == 'p' && cmdp2 == '1'){
1881 ans = CmdPSK1rawDemod(Cmd+2);
1882 } else if(cmdp == 'p' && cmdp2 == '2'){
1883 ans = CmdPSK2rawDemod(Cmd+2);
1884 } else {
1885 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1886 }
1887 return ans;
1888 }
1889
1890 int CmdGrid(const char *Cmd)
1891 {
1892 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1893 PlotGridXdefault= PlotGridX;
1894 PlotGridYdefault= PlotGridY;
1895 RepaintGraphWindow();
1896 return 0;
1897 }
1898
1899 int CmdHexsamples(const char *Cmd)
1900 {
1901 int i, j;
1902 int requested = 0;
1903 int offset = 0;
1904 char string_buf[25];
1905 char* string_ptr = string_buf;
1906 uint8_t got[BIGBUF_SIZE];
1907
1908 sscanf(Cmd, "%i %i", &requested, &offset);
1909
1910 /* if no args send something */
1911 if (requested == 0) {
1912 requested = 8;
1913 }
1914 if (offset + requested > sizeof(got)) {
1915 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1916 return 0;
1917 }
1918
1919 GetFromBigBuf(got,requested,offset);
1920 WaitForResponse(CMD_ACK,NULL);
1921
1922 i = 0;
1923 for (j = 0; j < requested; j++) {
1924 i++;
1925 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1926 if (i == 8) {
1927 *(string_ptr - 1) = '\0'; // remove the trailing space
1928 PrintAndLog("%s", string_buf);
1929 string_buf[0] = '\0';
1930 string_ptr = string_buf;
1931 i = 0;
1932 }
1933 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1934 *(string_ptr - 1) = '\0';
1935 PrintAndLog("%s", string_buf);
1936 string_buf[0] = '\0';
1937 }
1938 }
1939 return 0;
1940 }
1941
1942 int CmdHide(const char *Cmd)
1943 {
1944 HideGraphWindow();
1945 return 0;
1946 }
1947
1948 //zero mean GraphBuffer
1949 int CmdHpf(const char *Cmd)
1950 {
1951 int i;
1952 int accum = 0;
1953
1954 for (i = 10; i < GraphTraceLen; ++i)
1955 accum += GraphBuffer[i];
1956 accum /= (GraphTraceLen - 10);
1957 for (i = 0; i < GraphTraceLen; ++i)
1958 GraphBuffer[i] -= accum;
1959
1960 RepaintGraphWindow();
1961 return 0;
1962 }
1963
1964 bool _headBit( BitstreamOut *stream)
1965 {
1966 int bytepos = stream->position >> 3; // divide by 8
1967 int bitpos = (stream->position++) & 7; // mask out 00000111
1968 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1969 }
1970
1971 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1972 {
1973 int i;
1974 uint8_t val = 0;
1975 for(i =0 ; i < bits_per_sample; i++)
1976 {
1977 val |= (_headBit(b) << (7-i));
1978 }
1979 return val;
1980 }
1981
1982 int getSamples(const char *Cmd, bool silent)
1983 {
1984 //If we get all but the last byte in bigbuf,
1985 // we don't have to worry about remaining trash
1986 // in the last byte in case the bits-per-sample
1987 // does not line up on byte boundaries
1988
1989 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1990
1991 int n = strtol(Cmd, NULL, 0);
1992
1993 if ( n == 0 || n > sizeof(got))
1994 n = sizeof(got);
1995
1996 PrintAndLog("Reading %d bytes from device memory\n", n);
1997 GetFromBigBuf(got,n,0);
1998 PrintAndLog("Data fetched");
1999 UsbCommand response;
2000 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2001 PrintAndLog("timeout while waiting for reply.");
2002 return 1;
2003 }
2004
2005 uint8_t bits_per_sample = 8;
2006
2007 //Old devices without this feature would send 0 at arg[0]
2008 if(response.arg[0] > 0)
2009 {
2010 sample_config *sc = (sample_config *) response.d.asBytes;
2011 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2012 bits_per_sample = sc->bits_per_sample;
2013 }
2014 if(bits_per_sample < 8)
2015 {
2016 PrintAndLog("Unpacking...");
2017 BitstreamOut bout = { got, bits_per_sample * n, 0};
2018 int j =0;
2019 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2020 uint8_t sample = getByte(bits_per_sample, &bout);
2021 GraphBuffer[j] = ((int) sample )- 128;
2022 }
2023 GraphTraceLen = j;
2024 PrintAndLog("Unpacked %d samples" , j );
2025 }else
2026 {
2027 for (int j = 0; j < n; j++) {
2028 GraphBuffer[j] = ((int)got[j]) - 128;
2029 }
2030 GraphTraceLen = n;
2031 }
2032
2033 RepaintGraphWindow();
2034 return 0;
2035 }
2036
2037 int CmdSamples(const char *Cmd)
2038 {
2039 return getSamples(Cmd, false);
2040 }
2041
2042 int CmdTuneSamples(const char *Cmd)
2043 {
2044 int timeout = 0;
2045 printf("\nMeasuring antenna characteristics, please wait...");
2046
2047 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2048 clearCommandBuffer();
2049 SendCommand(&c);
2050 UsbCommand resp;
2051 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2052 timeout++;
2053 printf(".");
2054 if (timeout > 7) {
2055 PrintAndLog("\nNo response from Proxmark. Aborting...");
2056 return 1;
2057 }
2058 }
2059
2060 int peakv, peakf;
2061 int vLf125, vLf134, vHf;
2062 vLf125 = resp.arg[0] & 0xffff;
2063 vLf134 = resp.arg[0] >> 16;
2064 vHf = resp.arg[1] & 0xffff;;
2065 peakf = resp.arg[2] & 0xffff;
2066 peakv = resp.arg[2] >> 16;
2067 PrintAndLog("");
2068 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2069 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2070 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2071 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2072
2073 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2074 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2075 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2076 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2077
2078 if (peakv < LF_UNUSABLE_V)
2079 PrintAndLog("# Your LF antenna is unusable.");
2080 else if (peakv < LF_MARGINAL_V)
2081 PrintAndLog("# Your LF antenna is marginal.");
2082 if (vHf < HF_UNUSABLE_V)
2083 PrintAndLog("# Your HF antenna is unusable.");
2084 else if (vHf < HF_MARGINAL_V)
2085 PrintAndLog("# Your HF antenna is marginal.");
2086
2087 if (peakv >= LF_UNUSABLE_V) {
2088 for (int i = 0; i < 256; i++) {
2089 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2090 }
2091 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2092 PrintAndLog("\n");
2093 GraphTraceLen = 256;
2094 ShowGraphWindow();
2095 RepaintGraphWindow();
2096 }
2097 return 0;
2098 }
2099
2100
2101 int CmdLoad(const char *Cmd)
2102 {
2103 char filename[FILE_PATH_SIZE] = {0x00};
2104 int len = 0;
2105
2106 len = strlen(Cmd);
2107 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2108 memcpy(filename, Cmd, len);
2109
2110 FILE *f = fopen(filename, "r");
2111 if (!f) {
2112 PrintAndLog("couldn't open '%s'", filename);
2113 return 0;
2114 }
2115
2116 GraphTraceLen = 0;
2117 char line[80];
2118 while (fgets(line, sizeof (line), f)) {
2119 GraphBuffer[GraphTraceLen] = atoi(line);
2120 GraphTraceLen++;
2121 }
2122 fclose(f);
2123 PrintAndLog("loaded %d samples", GraphTraceLen);
2124 RepaintGraphWindow();
2125 return 0;
2126 }
2127
2128 int CmdLtrim(const char *Cmd)
2129 {
2130 int ds = atoi(Cmd);
2131
2132 if (GraphTraceLen <= 0) return 0;
2133
2134 for (int i = ds; i < GraphTraceLen; ++i)
2135 GraphBuffer[i-ds] = GraphBuffer[i];
2136
2137 GraphTraceLen -= ds;
2138 RepaintGraphWindow();
2139 return 0;
2140 }
2141
2142 // trim graph to input argument length
2143 int CmdRtrim(const char *Cmd)
2144 {
2145 int ds = atoi(Cmd);
2146 GraphTraceLen = ds;
2147 RepaintGraphWindow();
2148 return 0;
2149 }
2150
2151 int CmdNorm(const char *Cmd)
2152 {
2153 int i;
2154 int max = INT_MIN, min = INT_MAX;
2155
2156 for (i = 10; i < GraphTraceLen; ++i) {
2157 if (GraphBuffer[i] > max)
2158 max = GraphBuffer[i];
2159 if (GraphBuffer[i] < min)
2160 min = GraphBuffer[i];
2161 }
2162
2163 if (max != min) {
2164 for (i = 0; i < GraphTraceLen; ++i) {
2165 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2166 (max - min);
2167 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2168 }
2169 }
2170 RepaintGraphWindow();
2171 return 0;
2172 }
2173
2174 int CmdPlot(const char *Cmd)
2175 {
2176 ShowGraphWindow();
2177 return 0;
2178 }
2179
2180 int CmdSave(const char *Cmd)
2181 {
2182 char filename[FILE_PATH_SIZE] = {0x00};
2183 int len = 0;
2184
2185 len = strlen(Cmd);
2186 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2187 memcpy(filename, Cmd, len);
2188
2189
2190 FILE *f = fopen(filename, "w");
2191 if(!f) {
2192 PrintAndLog("couldn't open '%s'", filename);
2193 return 0;
2194 }
2195 int i;
2196 for (i = 0; i < GraphTraceLen; i++) {
2197 fprintf(f, "%d\n", GraphBuffer[i]);
2198 }
2199 fclose(f);
2200 PrintAndLog("saved to '%s'", Cmd);
2201 return 0;
2202 }
2203
2204 int CmdScale(const char *Cmd)
2205 {
2206 CursorScaleFactor = atoi(Cmd);
2207 if (CursorScaleFactor == 0) {
2208 PrintAndLog("bad, can't have zero scale");
2209 CursorScaleFactor = 1;
2210 }
2211 RepaintGraphWindow();
2212 return 0;
2213 }
2214
2215 int CmdDirectionalThreshold(const char *Cmd)
2216 {
2217 int8_t upThres = param_get8(Cmd, 0);
2218 int8_t downThres = param_get8(Cmd, 1);
2219
2220 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2221
2222 int lastValue = GraphBuffer[0];
2223 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2224
2225 for (int i = 1; i < GraphTraceLen; ++i) {
2226 // Apply first threshold to samples heading up
2227 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2228 {
2229 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2230 GraphBuffer[i] = 1;
2231 }
2232 // Apply second threshold to samples heading down
2233 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2234 {
2235 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2236 GraphBuffer[i] = -1;
2237 }
2238 else
2239 {
2240 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2241 GraphBuffer[i] = GraphBuffer[i-1];
2242
2243 }
2244 }
2245 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2246 RepaintGraphWindow();
2247 return 0;
2248 }
2249
2250 int CmdZerocrossings(const char *Cmd)
2251 {
2252 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2253 CmdHpf("");
2254
2255 int sign = 1;
2256 int zc = 0;
2257 int lastZc = 0;
2258
2259 for (int i = 0; i < GraphTraceLen; ++i) {
2260 if (GraphBuffer[i] * sign >= 0) {
2261 // No change in sign, reproduce the previous sample count.
2262 zc++;
2263 GraphBuffer[i] = lastZc;
2264 } else {
2265 // Change in sign, reset the sample count.
2266 sign = -sign;
2267 GraphBuffer[i] = lastZc;
2268 if (sign > 0) {
2269 lastZc = zc;
2270 zc = 0;
2271 }
2272 }
2273 }
2274
2275 RepaintGraphWindow();
2276 return 0;
2277 }
2278
2279 int usage_data_bin2hex(){
2280 PrintAndLog("Usage: data bin2hex <binary_digits>");
2281 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2282 return 0;
2283 }
2284
2285 /**
2286 * @brief Utility for conversion via cmdline.
2287 * @param Cmd
2288 * @return
2289 */
2290 int Cmdbin2hex(const char *Cmd)
2291 {
2292 int bg =0, en =0;
2293 if(param_getptr(Cmd, &bg, &en, 0))
2294 {
2295 return usage_data_bin2hex();
2296 }
2297 //Number of digits supplied as argument
2298 size_t length = en - bg +1;
2299 size_t bytelen = (length+7) / 8;
2300 uint8_t* arr = (uint8_t *) malloc(bytelen);
2301 memset(arr, 0, bytelen);
2302 BitstreamOut bout = { arr, 0, 0 };
2303
2304 for(; bg <= en ;bg++)
2305 {
2306 char c = Cmd[bg];
2307 if( c == '1') pushBit(&bout, 1);
2308 else if( c == '0') pushBit(&bout, 0);
2309 else PrintAndLog("Ignoring '%c'", c);
2310 }
2311
2312 if(bout.numbits % 8 != 0)
2313 {
2314 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2315 }
2316
2317 //Uses printf instead of PrintAndLog since the latter
2318 // adds linebreaks to each printout - this way was more convenient since we don't have to
2319 // allocate a string and write to that first...
2320 for(size_t x = 0; x < bytelen ; x++)
2321 {
2322 printf("%02X", arr[x]);
2323 }
2324 printf("\n");
2325 free(arr);
2326 return 0;
2327 }
2328
2329 int usage_data_hex2bin(){
2330 PrintAndLog("Usage: data hex2bin <hex_digits>");
2331 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2332 return 0;
2333 }
2334
2335 int Cmdhex2bin(const char *Cmd)
2336 {
2337 int bg =0, en =0;
2338 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2339
2340 while(bg <= en )
2341 {
2342 char x = Cmd[bg++];
2343 // capitalize
2344 if (x >= 'a' && x <= 'f')
2345 x -= 32;
2346 // convert to numeric value
2347 if (x >= '0' && x <= '9')
2348 x -= '0';
2349 else if (x >= 'A' && x <= 'F')
2350 x -= 'A' - 10;
2351 else
2352 continue;
2353
2354 //Uses printf instead of PrintAndLog since the latter
2355 // adds linebreaks to each printout - this way was more convenient since we don't have to
2356 // allocate a string and write to that first...
2357
2358 for(int i= 0 ; i < 4 ; ++i)
2359 printf("%d",(x >> (3 - i)) & 1);
2360 }
2361 printf("\n");
2362
2363 return 0;
2364 }
2365
2366 static command_t CommandTable[] =
2367 {
2368 {"help", CmdHelp, 1, "This help"},
2369 {"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)"},
2370 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2371 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2372 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2373 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2374 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2375 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2376 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2377 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2378 {"dec", CmdDec, 1, "Decimate samples"},
2379 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2380 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2381 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2382 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2383 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2384 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2385 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2386 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2387 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2388 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2389 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2390 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2391 {"hide", CmdHide, 1, "Hide graph window"},
2392 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2393 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2394 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2395 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2396 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2397 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2398 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2399 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2400 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2401 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2402 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2403 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2404 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2405 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2406 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2407 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2408 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2409 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2410 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2411 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2412 {NULL, NULL, 0, NULL}
2413 };
2414
2415 int CmdData(const char *Cmd){
2416 clearCommandBuffer();
2417 CmdsParse(CommandTable, Cmd);
2418 return 0;
2419 }
2420
2421 int CmdHelp(const char *Cmd)
2422 {
2423 CmdsHelp(CommandTable);
2424 return 0;
2425 }
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