]> cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmddata.c
projects / proxmark3-svn / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
CHG: free the malloc:d memory in the crc8 function.
[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') return usage_data_autocorr();
760 int window = 4000; //set default
761 char grph=0;
762 bool updateGrph = FALSE;
763 sscanf(Cmd, "%i %c", &window, &grph);
764
765 if (window >= GraphTraceLen) {
766 PrintAndLog("window must be smaller than trace (%d samples)",
767 GraphTraceLen);
768 return 0;
769 }
770 if (grph == 'g') updateGrph=TRUE;
771 return AutoCorrelate(window, updateGrph, TRUE);
772 }
773
774 int CmdBitsamples(const char *Cmd)
775 {
776 int cnt = 0;
777 uint8_t got[12288];
778
779 GetFromBigBuf(got,sizeof(got),0);
780 WaitForResponse(CMD_ACK,NULL);
781
782 for (int j = 0; j < sizeof(got); j++) {
783 for (int k = 0; k < 8; k++) {
784 if(got[j] & (1 << (7 - k))) {
785 GraphBuffer[cnt++] = 1;
786 } else {
787 GraphBuffer[cnt++] = 0;
788 }
789 }
790 }
791 GraphTraceLen = cnt;
792 RepaintGraphWindow();
793 return 0;
794 }
795
796 int CmdBuffClear(const char *Cmd)
797 {
798 UsbCommand c = {CMD_BUFF_CLEAR};
799 SendCommand(&c);
800 ClearGraph(true);
801 return 0;
802 }
803
804 int CmdDec(const char *Cmd)
805 {
806 for (int i = 0; i < (GraphTraceLen / 2); ++i)
807 GraphBuffer[i] = GraphBuffer[i * 2];
808 GraphTraceLen /= 2;
809 PrintAndLog("decimated by 2");
810 RepaintGraphWindow();
811 return 0;
812 }
813 /**
814 * Undecimate - I'd call it 'interpolate', but we'll save that
815 * name until someone does an actual interpolation command, not just
816 * blindly repeating samples
817 * @param Cmd
818 * @return
819 */
820 int CmdUndec(const char *Cmd)
821 {
822 if(param_getchar(Cmd, 0) == 'h')
823 {
824 PrintAndLog("Usage: data undec [factor]");
825 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
826 PrintAndLog("Options: ");
827 PrintAndLog(" h This help");
828 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
829 PrintAndLog("Example: 'data undec 3'");
830 return 0;
831 }
832
833 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
834 //We have memory, don't we?
835 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
836 uint32_t g_index = 0 ,s_index = 0;
837 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
838 {
839 int count = 0;
840 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
841 swap[s_index+count] = GraphBuffer[g_index];
842 s_index += count;
843 g_index++;
844 }
845
846 memcpy(GraphBuffer, swap, s_index * sizeof(int));
847 GraphTraceLen = s_index;
848 RepaintGraphWindow();
849 return 0;
850 }
851
852 //by marshmellow
853 //shift graph zero up or down based on input + or -
854 int CmdGraphShiftZero(const char *Cmd)
855 {
856
857 int shift=0;
858 //set options from parameters entered with the command
859 sscanf(Cmd, "%i", &shift);
860 int shiftedVal=0;
861 for(int i = 0; i<GraphTraceLen; i++){
862 shiftedVal=GraphBuffer[i]+shift;
863 if (shiftedVal>127)
864 shiftedVal=127;
865 else if (shiftedVal<-127)
866 shiftedVal=-127;
867 GraphBuffer[i]= shiftedVal;
868 }
869 CmdNorm("");
870 return 0;
871 }
872
873 //by marshmellow
874 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
875 //similar to dirtheshold, threshold commands
876 //takes a threshold length which is the measured length between two samples then determines an edge
877 int CmdAskEdgeDetect(const char *Cmd)
878 {
879 int thresLen = 25;
880 sscanf(Cmd, "%i", &thresLen);
881
882 for(int i = 1; i<GraphTraceLen; i++){
883 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
884 GraphBuffer[i-1] = 127;
885 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
886 GraphBuffer[i-1] = -127;
887 }
888 RepaintGraphWindow();
889 return 0;
890 }
891
892 /* Print our clock rate */
893 // uses data from graphbuffer
894 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
895 int CmdDetectClockRate(const char *Cmd)
896 {
897 char cmdp = param_getchar(Cmd, 0);
898 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
899 PrintAndLog("Usage: data detectclock [modulation] <clock>");
900 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
901 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
902 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
903 PrintAndLog("");
904 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
905 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
906 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
907 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
908 }
909 int ans=0;
910 if (cmdp == 'a'){
911 ans = GetAskClock(Cmd+1, true, false);
912 } else if (cmdp == 'f'){
913 ans = GetFskClock("", true, false);
914 } else if (cmdp == 'n'){
915 ans = GetNrzClock("", true, false);
916 } else if (cmdp == 'p'){
917 ans = GetPskClock("", true, false);
918 } else {
919 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
920 }
921 return ans;
922 }
923
924 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
925 {
926 static char fType[8];
927 memset(fType, 0x00, 8);
928 char *fskType = fType;
929 if (fchigh==10 && fclow==8){
930 if (invert) //fsk2a
931 memcpy(fskType, "FSK2a", 5);
932 else //fsk2
933 memcpy(fskType, "FSK2", 4);
934 } else if (fchigh == 8 && fclow == 5) {
935 if (invert)
936 memcpy(fskType, "FSK1", 4);
937 else
938 memcpy(fskType, "FSK1a", 5);
939 } else {
940 memcpy(fskType, "FSK??", 5);
941 }
942 return fskType;
943 }
944
945 //by marshmellow
946 //fsk raw demod and print binary
947 //takes 4 arguments - Clock, invert, fchigh, fclow
948 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
949 int FSKrawDemod(const char *Cmd, bool verbose)
950 {
951 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
952 uint8_t rfLen, invert, fchigh, fclow;
953
954 //set defaults
955 //set options from parameters entered with the command
956 rfLen = param_get8(Cmd, 0);
957 invert = param_get8(Cmd, 1);
958 fchigh = param_get8(Cmd, 2);
959 fclow = param_get8(Cmd, 3);
960 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
961 if (rfLen==1) {
962 invert = 1; //if invert option only is used
963 rfLen = 0;
964 }
965 }
966
967 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
968 size_t BitLen = getFromGraphBuf(BitStream);
969 if (BitLen==0) return 0;
970 //get field clock lengths
971 uint16_t fcs=0;
972 if (!fchigh || !fclow) {
973 fcs = countFC(BitStream, BitLen, 1);
974 if (!fcs) {
975 fchigh = 10;
976 fclow = 8;
977 } else {
978 fchigh = (fcs >> 8) & 0x00FF;
979 fclow = fcs & 0x00FF;
980 }
981 }
982 //get bit clock length
983 if (!rfLen) {
984 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
985 if (!rfLen) rfLen = 50;
986 }
987 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
988 if (size > 0) {
989 setDemodBuf(BitStream, size, 0);
990
991 // Now output the bitstream to the scrollback by line of 16 bits
992 if (verbose || g_debugMode) {
993 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
994 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
995 printDemodBuff();
996 }
997
998 return 1;
999 } else {
1000 if (g_debugMode) PrintAndLog("no FSK data found");
1001 }
1002 return 0;
1003 }
1004
1005 //by marshmellow
1006 //fsk raw demod and print binary
1007 //takes 4 arguments - Clock, invert, fchigh, fclow
1008 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1009 int CmdFSKrawdemod(const char *Cmd)
1010 {
1011 char cmdp = param_getchar(Cmd, 0);
1012 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1013 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1014 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1015 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1016 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1017 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1018 PrintAndLog("");
1019 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1020 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1021 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1022 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1023 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1024 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1025 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1026 return 0;
1027 }
1028 return FSKrawDemod(Cmd, TRUE);
1029 }
1030
1031 //by marshmellow (based on existing demod + holiman's refactor)
1032 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1033 //print full HID Prox ID and some bit format details if found
1034 int CmdFSKdemodHID(const char *Cmd)
1035 {
1036 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1037 uint32_t hi2=0, hi=0, lo=0;
1038
1039 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1040 size_t BitLen = getFromGraphBuf(BitStream);
1041 if (BitLen==0) return 0;
1042 //get binary from fsk wave
1043 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1044 if (idx<0){
1045 if (g_debugMode){
1046 if (idx==-1){
1047 PrintAndLog("DEBUG: Just Noise Detected");
1048 } else if (idx == -2) {
1049 PrintAndLog("DEBUG: Error demoding fsk");
1050 } else if (idx == -3) {
1051 PrintAndLog("DEBUG: Preamble not found");
1052 } else if (idx == -4) {
1053 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1054 } else {
1055 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1056 }
1057 }
1058 return 0;
1059 }
1060 if (hi2==0 && hi==0 && lo==0) {
1061 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1062 return 0;
1063 }
1064 if (hi2 != 0){ //extra large HID tags
1065 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1066 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1067 }
1068 else { //standard HID tags <38 bits
1069 uint8_t fmtLen = 0;
1070 uint32_t fc = 0;
1071 uint32_t cardnum = 0;
1072 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1073 uint32_t lo2=0;
1074 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1075 uint8_t idx3 = 1;
1076 while(lo2>1){ //find last bit set to 1 (format len bit)
1077 lo2=lo2>>1;
1078 idx3++;
1079 }
1080 fmtLen =idx3+19;
1081 fc =0;
1082 cardnum=0;
1083 if(fmtLen==26){
1084 cardnum = (lo>>1)&0xFFFF;
1085 fc = (lo>>17)&0xFF;
1086 }
1087 if(fmtLen==34){
1088 cardnum = (lo>>1)&0xFFFF;
1089 fc= ((hi&1)<<15)|(lo>>17);
1090 }
1091 if(fmtLen==35){
1092 cardnum = (lo>>1)&0xFFFFF;
1093 fc = ((hi&1)<<11)|(lo>>21);
1094 }
1095 }
1096 else { //if bit 38 is not set then 37 bit format is used
1097 fmtLen = 37;
1098 fc = 0;
1099 cardnum = 0;
1100 if(fmtLen == 37){
1101 cardnum = (lo>>1)&0x7FFFF;
1102 fc = ((hi&0xF)<<12)|(lo>>20);
1103 }
1104 }
1105 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1106 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1107 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1108 }
1109 setDemodBuf(BitStream,BitLen,idx);
1110 if (g_debugMode){
1111 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1112 printDemodBuff();
1113 }
1114 return 1;
1115 }
1116
1117 //by marshmellow
1118 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1119 //print full Paradox Prox ID and some bit format details if found
1120 int CmdFSKdemodParadox(const char *Cmd)
1121 {
1122 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1123 uint32_t hi2=0, hi=0, lo=0;
1124
1125 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1126 size_t BitLen = getFromGraphBuf(BitStream);
1127 if (BitLen==0) return 0;
1128 //get binary from fsk wave
1129 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1130 if (idx<0){
1131 if (g_debugMode){
1132 if (idx==-1){
1133 PrintAndLog("DEBUG: Just Noise Detected");
1134 } else if (idx == -2) {
1135 PrintAndLog("DEBUG: Error demoding fsk");
1136 } else if (idx == -3) {
1137 PrintAndLog("DEBUG: Preamble not found");
1138 } else if (idx == -4) {
1139 PrintAndLog("DEBUG: Error in Manchester data");
1140 } else {
1141 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1142 }
1143 }
1144 return 0;
1145 }
1146 if (hi2==0 && hi==0 && lo==0){
1147 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1148 return 0;
1149 }
1150 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1151 uint32_t cardnum = (lo>>10)&0xFFFF;
1152 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1153 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1154 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1155
1156 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1157 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1158 setDemodBuf(BitStream,BitLen,idx);
1159 if (g_debugMode){
1160 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1161 printDemodBuff();
1162 }
1163 return 1;
1164 }
1165
1166 //by marshmellow
1167 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1168 //print ioprox ID and some format details
1169 int CmdFSKdemodIO(const char *Cmd)
1170 {
1171 int idx=0;
1172 //something in graphbuffer?
1173 if (GraphTraceLen < 65) {
1174 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1175 return 0;
1176 }
1177 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1178 size_t BitLen = getFromGraphBuf(BitStream);
1179 if (BitLen==0) return 0;
1180
1181 //get binary from fsk wave
1182 idx = IOdemodFSK(BitStream,BitLen);
1183 if (idx<0){
1184 if (g_debugMode){
1185 if (idx==-1){
1186 PrintAndLog("DEBUG: Just Noise Detected");
1187 } else if (idx == -2) {
1188 PrintAndLog("DEBUG: not enough samples");
1189 } else if (idx == -3) {
1190 PrintAndLog("DEBUG: error during fskdemod");
1191 } else if (idx == -4) {
1192 PrintAndLog("DEBUG: Preamble not found");
1193 } else if (idx == -5) {
1194 PrintAndLog("DEBUG: Separator bits not found");
1195 } else {
1196 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1197 }
1198 }
1199 return 0;
1200 }
1201 if (idx==0){
1202 if (g_debugMode){
1203 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1204 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1205 }
1206 return 0;
1207 }
1208 //Index map
1209 //0 10 20 30 40 50 60
1210 //| | | | | | |
1211 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1212 //-----------------------------------------------------------------------------
1213 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1214 //
1215 //XSF(version)facility:codeone+codetwo (raw)
1216 //Handle the data
1217 if (idx+64>BitLen) {
1218 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1219 return 0;
1220 }
1221 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]);
1222 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]);
1223 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]);
1224 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]);
1225 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]);
1226 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]);
1227 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]);
1228
1229 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1230 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1231 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1232 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1233 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1234 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1235 uint16_t calccrc = 0;
1236
1237 for (uint8_t i=1; i<6; ++i){
1238 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1239 }
1240 calccrc &= 0xff;
1241 calccrc = 0xff - calccrc;
1242
1243 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1244
1245 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1246 setDemodBuf(BitStream,64,idx);
1247 if (g_debugMode){
1248 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1249 printDemodBuff();
1250 }
1251 return 1;
1252 }
1253
1254 //by marshmellow
1255 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1256 //print full AWID Prox ID and some bit format details if found
1257 int CmdFSKdemodAWID(const char *Cmd)
1258 {
1259 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1260 size_t size = getFromGraphBuf(BitStream);
1261 if (size==0) return 0;
1262
1263 //get binary from fsk wave
1264 int idx = AWIDdemodFSK(BitStream, &size);
1265 if (idx<=0){
1266 if (g_debugMode){
1267 if (idx == -1)
1268 PrintAndLog("DEBUG: Error - not enough samples");
1269 else if (idx == -2)
1270 PrintAndLog("DEBUG: Error - only noise found");
1271 else if (idx == -3)
1272 PrintAndLog("DEBUG: Error - problem during FSK demod");
1273 else if (idx == -4)
1274 PrintAndLog("DEBUG: Error - AWID preamble not found");
1275 else if (idx == -5)
1276 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1277 else
1278 PrintAndLog("DEBUG: Error %d",idx);
1279 }
1280 return 0;
1281 }
1282
1283 // Index map
1284 // 0 10 20 30 40 50 60
1285 // | | | | | | |
1286 // 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
1287 // -----------------------------------------------------------------------------
1288 // 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
1289 // 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
1290 // |---26 bit---| |-----117----||-------------142-------------|
1291 // b = format bit len, o = odd parity of last 3 bits
1292 // f = facility code, c = card number
1293 // w = wiegand parity
1294 // (26 bit format shown)
1295
1296 //get raw ID before removing parities
1297 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1298 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1299 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1300 setDemodBuf(BitStream,96,idx);
1301
1302 size = removeParity(BitStream, idx+8, 4, 1, 88);
1303 if (size != 66){
1304 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1305 return 0;
1306 }
1307 // ok valid card found!
1308
1309 // Index map
1310 // 0 10 20 30 40 50 60
1311 // | | | | | | |
1312 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1313 // -----------------------------------------------------------------------------
1314 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1315 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1316 // |26 bit| |-117--| |-----142------|
1317 // b = format bit len, o = odd parity of last 3 bits
1318 // f = facility code, c = card number
1319 // w = wiegand parity
1320 // (26 bit format shown)
1321
1322 uint32_t fc = 0;
1323 uint32_t cardnum = 0;
1324 uint32_t code1 = 0;
1325 uint32_t code2 = 0;
1326 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1327 if (fmtLen==26){
1328 fc = bytebits_to_byte(BitStream+9, 8);
1329 cardnum = bytebits_to_byte(BitStream+17, 16);
1330 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1331 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1332 } else {
1333 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1334 if (fmtLen>32){
1335 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1336 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1337 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1338 } else{
1339 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1340 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1341 }
1342 }
1343 if (g_debugMode){
1344 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1345 printDemodBuff();
1346 }
1347 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1348 return 1;
1349 }
1350
1351 //by marshmellow
1352 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1353 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1354 int CmdFSKdemodPyramid(const char *Cmd)
1355 {
1356 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1357 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1358 size_t size = getFromGraphBuf(BitStream);
1359 if (size==0) return 0;
1360
1361 //get binary from fsk wave
1362 int idx = PyramiddemodFSK(BitStream, &size);
1363 if (idx < 0){
1364 if (g_debugMode){
1365 if (idx == -5)
1366 PrintAndLog("DEBUG: Error - not enough samples");
1367 else if (idx == -1)
1368 PrintAndLog("DEBUG: Error - only noise found");
1369 else if (idx == -2)
1370 PrintAndLog("DEBUG: Error - problem during FSK demod");
1371 else if (idx == -3)
1372 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1373 else if (idx == -4)
1374 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1375 else
1376 PrintAndLog("DEBUG: Error - idx: %d",idx);
1377 }
1378 return 0;
1379 }
1380 // Index map
1381 // 0 10 20 30 40 50 60
1382 // | | | | | | |
1383 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1384 // -----------------------------------------------------------------------------
1385 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1386 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1387
1388 // 64 70 80 90 100 110 120
1389 // | | | | | | |
1390 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1391 // -----------------------------------------------------------------------------
1392 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1393 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1394 // |---115---||---------71---------|
1395 // s = format start bit, o = odd parity of last 7 bits
1396 // f = facility code, c = card number
1397 // w = wiegand parity, x = extra space for other formats
1398 // p = CRC8maxim checksum
1399 // (26 bit format shown)
1400
1401 //get bytes for checksum calc
1402 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1403 uint8_t csBuff[14] = {0x00};
1404 for (uint8_t i = 0; i < 13; i++){
1405 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1406 }
1407 //check checksum calc
1408 //checksum calc thanks to ICEMAN!!
1409 uint32_t checkCS = CRC8Maxim(csBuff,13);
1410
1411 //get raw ID before removing parities
1412 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1413 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1414 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1415 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1416 setDemodBuf(BitStream,128,idx);
1417
1418 size = removeParity(BitStream, idx+8, 8, 1, 120);
1419 if (size != 105){
1420 if (g_debugMode)
1421 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1422 return 0;
1423 }
1424
1425 // ok valid card found!
1426
1427 // Index map
1428 // 0 10 20 30 40 50 60 70
1429 // | | | | | | | |
1430 // 01234567890123456789012345678901234567890123456789012345678901234567890
1431 // -----------------------------------------------------------------------
1432 // 00000000000000000000000000000000000000000000000000000000000000000000000
1433 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1434
1435 // 71 80 90 100
1436 // | | | |
1437 // 1 2 34567890 1234567890123456 7 8901234
1438 // ---------------------------------------
1439 // 1 1 01110011 0000000001000110 0 1001010
1440 // s w ffffffff cccccccccccccccc w ppppppp
1441 // |--115-| |------71------|
1442 // s = format start bit, o = odd parity of last 7 bits
1443 // f = facility code, c = card number
1444 // w = wiegand parity, x = extra space for other formats
1445 // p = CRC8-Maxim checksum
1446 // (26 bit format shown)
1447
1448 //find start bit to get fmtLen
1449 int j;
1450 for (j=0; j < size; ++j){
1451 if(BitStream[j]) break;
1452 }
1453
1454 uint8_t fmtLen = size-j-8;
1455 uint32_t fc = 0;
1456 uint32_t cardnum = 0;
1457 uint32_t code1 = 0;
1458
1459 if ( fmtLen == 26 ){
1460 fc = bytebits_to_byte(BitStream+73, 8);
1461 cardnum = bytebits_to_byte(BitStream+81, 16);
1462 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1463 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);
1464 } else if (fmtLen == 45) {
1465 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1466 fc = bytebits_to_byte(BitStream+53, 10);
1467 cardnum = bytebits_to_byte(BitStream+63, 32);
1468 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1469 } else {
1470 cardnum = bytebits_to_byte(BitStream+81, 16);
1471 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1472 }
1473 if (checksum == checkCS)
1474 PrintAndLog("Checksum %02x passed", checksum);
1475 else
1476 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1477
1478 if (g_debugMode){
1479 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1480 printDemodBuff();
1481 }
1482 return 1;
1483 }
1484
1485 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1486 // 8 databits + 1 parity (1)
1487 // CIITT 16 chksum
1488 // NATIONAL CODE, ICAR database
1489 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1490 // FLAG (animal/non-animal)
1491 /*
1492 38 IDbits
1493 10 country code
1494 1 extra app bit
1495 14 reserved bits
1496 1 animal bit
1497 16 ccitt CRC chksum over 64bit ID CODE.
1498 24 appli bits.
1499
1500 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1501 */
1502 int CmdFDXBdemodBI(const char *Cmd){
1503
1504 int invert = 1;
1505 int clk = 32;
1506 int errCnt = 0;
1507 int maxErr = 0;
1508 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1509 size_t size = getFromGraphBuf(BitStream);
1510
1511 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1512 if ( errCnt < 0 || errCnt > maxErr ) {
1513 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1514 return 0;
1515 }
1516
1517 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1518 if (errCnt < 0 || errCnt > maxErr ) {
1519 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1520 return 0;
1521 }
1522
1523 int preambleIndex = FDXBdemodBI(BitStream, &size);
1524 if (preambleIndex < 0){
1525 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1526 return 0;
1527 }
1528 if (size != 128) {
1529 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1530 return 0;
1531 }
1532
1533 setDemodBuf(BitStream, 128, preambleIndex);
1534
1535 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1536 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1537 if ( size != 104 ) {
1538 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1539 return 0;
1540 }
1541 if (g_debugMode) {
1542 char *bin = sprint_bin_break(BitStream,size,16);
1543 PrintAndLog("DEBUG BinStream:\n%s",bin);
1544 }
1545 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1546 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1547
1548 //got a good demod
1549 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1550 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1551 uint8_t dataBlockBit = BitStream[48];
1552 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1553 uint8_t animalBit = BitStream[63];
1554 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1555 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1556
1557 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1558 uint8_t raw[8];
1559 num_to_bytes(rawid, 8, raw);
1560
1561 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1562
1563 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1564 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1565 PrintAndLog("National Code: %012llu", NationalCode);
1566 PrintAndLog("CountryCode: %04u", countryCode);
1567 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1568 PrintAndLog("reserved Code: %u", reservedCode);
1569 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1570 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1571 PrintAndLog("Extended: 0x%X\n", extended);
1572
1573 return 1;
1574 }
1575
1576
1577 //by marshmellow
1578 //attempt to psk1 demod graph buffer
1579 int PSKDemod(const char *Cmd, bool verbose)
1580 {
1581 int invert=0;
1582 int clk=0;
1583 int maxErr=100;
1584 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1585 if (clk==1){
1586 invert=1;
1587 clk=0;
1588 }
1589 if (invert != 0 && invert != 1) {
1590 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1591 return 0;
1592 }
1593 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1594 size_t BitLen = getFromGraphBuf(BitStream);
1595 if (BitLen==0) return 0;
1596 uint8_t carrier=countFC(BitStream, BitLen, 0);
1597 if (carrier!=2 && carrier!=4 && carrier!=8){
1598 //invalid carrier
1599 return 0;
1600 }
1601 if (g_debugMode){
1602 PrintAndLog("Carrier: rf/%d",carrier);
1603 }
1604 int errCnt=0;
1605 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1606 if (errCnt > maxErr){
1607 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1608 return 0;
1609 }
1610 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1611 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1612 return 0;
1613 }
1614 if (verbose || g_debugMode){
1615 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1616 if (errCnt>0){
1617 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1618 }
1619 }
1620 //prime demod buffer for output
1621 setDemodBuf(BitStream,BitLen,0);
1622 return 1;
1623 }
1624
1625 // Indala 26 bit decode
1626 // by marshmellow
1627 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1628 int CmdIndalaDecode(const char *Cmd)
1629 {
1630 int ans;
1631 if (strlen(Cmd)>0){
1632 ans = PSKDemod(Cmd, 0);
1633 } else{ //default to RF/32
1634 ans = PSKDemod("32", 0);
1635 }
1636
1637 if (!ans){
1638 if (g_debugMode)
1639 PrintAndLog("Error1: %d",ans);
1640 return 0;
1641 }
1642 uint8_t invert=0;
1643 size_t size = DemodBufferLen;
1644 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1645 if (startIdx < 0 || size > 224) {
1646 if (g_debugMode)
1647 PrintAndLog("Error2: %d",ans);
1648 return -1;
1649 }
1650 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1651 if (invert)
1652 if (g_debugMode)
1653 PrintAndLog("Had to invert bits");
1654
1655 PrintAndLog("BitLen: %d",DemodBufferLen);
1656 //convert UID to HEX
1657 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1658 uid1=bytebits_to_byte(DemodBuffer,32);
1659 uid2=bytebits_to_byte(DemodBuffer+32,32);
1660 if (DemodBufferLen==64){
1661 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1662 } else {
1663 uid3=bytebits_to_byte(DemodBuffer+64,32);
1664 uid4=bytebits_to_byte(DemodBuffer+96,32);
1665 uid5=bytebits_to_byte(DemodBuffer+128,32);
1666 uid6=bytebits_to_byte(DemodBuffer+160,32);
1667 uid7=bytebits_to_byte(DemodBuffer+192,32);
1668 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1669 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1670 }
1671 if (g_debugMode){
1672 PrintAndLog("DEBUG: printing demodbuffer:");
1673 printDemodBuff();
1674 }
1675 return 1;
1676 }
1677
1678 int CmdPSKNexWatch(const char *Cmd)
1679 {
1680 if (!PSKDemod("", false)) return 0;
1681 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};
1682 size_t startIdx = 0, size = DemodBufferLen;
1683 bool invert = false;
1684 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1685 // if didn't find preamble try again inverting
1686 if (!PSKDemod("1", false)) return 0;
1687 size = DemodBufferLen;
1688 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1689 invert = true;
1690 }
1691 if (size != 128) return 0;
1692 setDemodBuf(DemodBuffer, size, startIdx+4);
1693 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1694 //get ID
1695 uint32_t ID = 0;
1696 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1697 for (uint8_t idx=0; idx<8; idx++){
1698 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1699 }
1700 }
1701 //parity check (TBD)
1702
1703 //checksum check (TBD)
1704
1705 //output
1706 PrintAndLog("NexWatch ID: %d", ID);
1707 if (invert){
1708 PrintAndLog("Had to Invert - probably NexKey");
1709 for (uint8_t idx=0; idx<size; idx++)
1710 DemodBuffer[idx] ^= 1;
1711 }
1712
1713 CmdPrintDemodBuff("x");
1714 return 1;
1715 }
1716
1717 // by marshmellow
1718 // takes 3 arguments - clock, invert, maxErr as integers
1719 // attempts to demodulate nrz only
1720 // prints binary found and saves in demodbuffer for further commands
1721 int NRZrawDemod(const char *Cmd, bool verbose)
1722 {
1723 int invert=0;
1724 int clk=0;
1725 int maxErr=100;
1726 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1727 if (clk==1){
1728 invert=1;
1729 clk=0;
1730 }
1731 if (invert != 0 && invert != 1) {
1732 PrintAndLog("Invalid argument: %s", Cmd);
1733 return 0;
1734 }
1735 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1736 size_t BitLen = getFromGraphBuf(BitStream);
1737 if (BitLen==0) return 0;
1738 int errCnt=0;
1739 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1740 if (errCnt > maxErr){
1741 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1742 return 0;
1743 }
1744 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1745 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1746 return 0;
1747 }
1748 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1749 //prime demod buffer for output
1750 setDemodBuf(BitStream,BitLen,0);
1751
1752 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1753 if (verbose || g_debugMode) {
1754 PrintAndLog("NRZ demoded bitstream:");
1755 // Now output the bitstream to the scrollback by line of 16 bits
1756 printDemodBuff();
1757 }
1758 return 1;
1759 }
1760
1761 int CmdNRZrawDemod(const char *Cmd)
1762 {
1763 char cmdp = param_getchar(Cmd, 0);
1764 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1765 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1766 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1767 PrintAndLog(" <invert>, 1 for invert output");
1768 PrintAndLog(" [set maximum allowed errors], default = 100.");
1769 PrintAndLog("");
1770 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1771 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1772 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1773 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1774 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");
1775 return 0;
1776 }
1777 return NRZrawDemod(Cmd, TRUE);
1778 }
1779
1780 // by marshmellow
1781 // takes 3 arguments - clock, invert, maxErr as integers
1782 // attempts to demodulate psk only
1783 // prints binary found and saves in demodbuffer for further commands
1784 int CmdPSK1rawDemod(const char *Cmd)
1785 {
1786 int ans;
1787 char cmdp = param_getchar(Cmd, 0);
1788 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1789 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1790 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1791 PrintAndLog(" <invert>, 1 for invert output");
1792 PrintAndLog(" [set maximum allowed errors], default = 100.");
1793 PrintAndLog("");
1794 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1795 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1796 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1797 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1798 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");
1799 return 0;
1800 }
1801 ans = PSKDemod(Cmd, TRUE);
1802 //output
1803 if (!ans){
1804 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1805 return 0;
1806 }
1807
1808 PrintAndLog("PSK1 demoded bitstream:");
1809 // Now output the bitstream to the scrollback by line of 16 bits
1810 printDemodBuff();
1811 return 1;
1812 }
1813
1814 // by marshmellow
1815 // takes same args as cmdpsk1rawdemod
1816 int CmdPSK2rawDemod(const char *Cmd)
1817 {
1818 int ans=0;
1819 char cmdp = param_getchar(Cmd, 0);
1820 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1821 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1822 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1823 PrintAndLog(" <invert>, 1 for invert output");
1824 PrintAndLog(" [set maximum allowed errors], default = 100.");
1825 PrintAndLog("");
1826 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1827 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1828 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1829 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1830 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");
1831 return 0;
1832 }
1833 ans=PSKDemod(Cmd, TRUE);
1834 if (!ans){
1835 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1836 return 0;
1837 }
1838 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1839 PrintAndLog("PSK2 demoded bitstream:");
1840 // Now output the bitstream to the scrollback by line of 16 bits
1841 printDemodBuff();
1842 return 1;
1843 }
1844
1845 // by marshmellow - combines all raw demod functions into one menu command
1846 int CmdRawDemod(const char *Cmd)
1847 {
1848 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1849
1850 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1851 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1852 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1853 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1854 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1855 PrintAndLog(" <options> see specific modulation help for optional parameters");
1856 PrintAndLog("");
1857 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1858 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1859 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1860 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1861 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1862 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1863 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1864 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1865 return 0;
1866 }
1867 char cmdp2 = Cmd[1];
1868 int ans = 0;
1869 if (cmdp == 'f' && cmdp2 == 's'){
1870 ans = CmdFSKrawdemod(Cmd+2);
1871 } else if(cmdp == 'a' && cmdp2 == 'b'){
1872 ans = Cmdaskbiphdemod(Cmd+2);
1873 } else if(cmdp == 'a' && cmdp2 == 'm'){
1874 ans = Cmdaskmandemod(Cmd+2);
1875 } else if(cmdp == 'a' && cmdp2 == 'r'){
1876 ans = Cmdaskrawdemod(Cmd+2);
1877 } else if(cmdp == 'n' && cmdp2 == 'r'){
1878 ans = CmdNRZrawDemod(Cmd+2);
1879 } else if(cmdp == 'p' && cmdp2 == '1'){
1880 ans = CmdPSK1rawDemod(Cmd+2);
1881 } else if(cmdp == 'p' && cmdp2 == '2'){
1882 ans = CmdPSK2rawDemod(Cmd+2);
1883 } else {
1884 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1885 }
1886 return ans;
1887 }
1888
1889 int CmdGrid(const char *Cmd)
1890 {
1891 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1892 PlotGridXdefault= PlotGridX;
1893 PlotGridYdefault= PlotGridY;
1894 RepaintGraphWindow();
1895 return 0;
1896 }
1897
1898 int CmdHexsamples(const char *Cmd)
1899 {
1900 int i, j;
1901 int requested = 0;
1902 int offset = 0;
1903 char string_buf[25];
1904 char* string_ptr = string_buf;
1905 uint8_t got[BIGBUF_SIZE];
1906
1907 sscanf(Cmd, "%i %i", &requested, &offset);
1908
1909 /* if no args send something */
1910 if (requested == 0) {
1911 requested = 8;
1912 }
1913 if (offset + requested > sizeof(got)) {
1914 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1915 return 0;
1916 }
1917
1918 GetFromBigBuf(got,requested,offset);
1919 WaitForResponse(CMD_ACK,NULL);
1920
1921 i = 0;
1922 for (j = 0; j < requested; j++) {
1923 i++;
1924 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1925 if (i == 8) {
1926 *(string_ptr - 1) = '\0'; // remove the trailing space
1927 PrintAndLog("%s", string_buf);
1928 string_buf[0] = '\0';
1929 string_ptr = string_buf;
1930 i = 0;
1931 }
1932 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1933 *(string_ptr - 1) = '\0';
1934 PrintAndLog("%s", string_buf);
1935 string_buf[0] = '\0';
1936 }
1937 }
1938 return 0;
1939 }
1940
1941 int CmdHide(const char *Cmd)
1942 {
1943 HideGraphWindow();
1944 return 0;
1945 }
1946
1947 //zero mean GraphBuffer
1948 int CmdHpf(const char *Cmd)
1949 {
1950 int i;
1951 int accum = 0;
1952
1953 for (i = 10; i < GraphTraceLen; ++i)
1954 accum += GraphBuffer[i];
1955 accum /= (GraphTraceLen - 10);
1956 for (i = 0; i < GraphTraceLen; ++i)
1957 GraphBuffer[i] -= accum;
1958
1959 RepaintGraphWindow();
1960 return 0;
1961 }
1962
1963 bool _headBit( BitstreamOut *stream)
1964 {
1965 int bytepos = stream->position >> 3; // divide by 8
1966 int bitpos = (stream->position++) & 7; // mask out 00000111
1967 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1968 }
1969
1970 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1971 {
1972 int i;
1973 uint8_t val = 0;
1974 for(i =0 ; i < bits_per_sample; i++)
1975 {
1976 val |= (_headBit(b) << (7-i));
1977 }
1978 return val;
1979 }
1980
1981 int getSamples(const char *Cmd, bool silent)
1982 {
1983 //If we get all but the last byte in bigbuf,
1984 // we don't have to worry about remaining trash
1985 // in the last byte in case the bits-per-sample
1986 // does not line up on byte boundaries
1987
1988 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1989
1990 int n = strtol(Cmd, NULL, 0);
1991
1992 if ( n == 0 || n > sizeof(got))
1993 n = sizeof(got);
1994
1995 PrintAndLog("Reading %d bytes from device memory\n", n);
1996 GetFromBigBuf(got,n,0);
1997 PrintAndLog("Data fetched");
1998 UsbCommand response;
1999 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2000 PrintAndLog("timeout while waiting for reply.");
2001 return 1;
2002 }
2003
2004 uint8_t bits_per_sample = 8;
2005
2006 //Old devices without this feature would send 0 at arg[0]
2007 if(response.arg[0] > 0)
2008 {
2009 sample_config *sc = (sample_config *) response.d.asBytes;
2010 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2011 bits_per_sample = sc->bits_per_sample;
2012 }
2013 if(bits_per_sample < 8)
2014 {
2015 PrintAndLog("Unpacking...");
2016 BitstreamOut bout = { got, bits_per_sample * n, 0};
2017 int j =0;
2018 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2019 uint8_t sample = getByte(bits_per_sample, &bout);
2020 GraphBuffer[j] = ((int) sample )- 128;
2021 }
2022 GraphTraceLen = j;
2023 PrintAndLog("Unpacked %d samples" , j );
2024 }else
2025 {
2026 for (int j = 0; j < n; j++) {
2027 GraphBuffer[j] = ((int)got[j]) - 128;
2028 }
2029 GraphTraceLen = n;
2030 }
2031
2032 RepaintGraphWindow();
2033 return 0;
2034 }
2035
2036 int CmdSamples(const char *Cmd)
2037 {
2038 return getSamples(Cmd, false);
2039 }
2040
2041 int CmdTuneSamples(const char *Cmd)
2042 {
2043 int timeout = 0;
2044 printf("\nMeasuring antenna characteristics, please wait...");
2045
2046 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2047 clearCommandBuffer();
2048 SendCommand(&c);
2049 UsbCommand resp;
2050 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2051 timeout++;
2052 printf(".");
2053 if (timeout > 7) {
2054 PrintAndLog("\nNo response from Proxmark. Aborting...");
2055 return 1;
2056 }
2057 }
2058
2059 int peakv, peakf;
2060 int vLf125, vLf134, vHf;
2061 vLf125 = resp.arg[0] & 0xffff;
2062 vLf134 = resp.arg[0] >> 16;
2063 vHf = resp.arg[1] & 0xffff;;
2064 peakf = resp.arg[2] & 0xffff;
2065 peakv = resp.arg[2] >> 16;
2066 PrintAndLog("");
2067 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2068 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2069 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2070 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2071
2072 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2073 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2074 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2075 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2076
2077 if (peakv < LF_UNUSABLE_V)
2078 PrintAndLog("# Your LF antenna is unusable.");
2079 else if (peakv < LF_MARGINAL_V)
2080 PrintAndLog("# Your LF antenna is marginal.");
2081 if (vHf < HF_UNUSABLE_V)
2082 PrintAndLog("# Your HF antenna is unusable.");
2083 else if (vHf < HF_MARGINAL_V)
2084 PrintAndLog("# Your HF antenna is marginal.");
2085
2086 if (peakv >= LF_UNUSABLE_V) {
2087 for (int i = 0; i < 256; i++) {
2088 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2089 }
2090 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2091 PrintAndLog("\n");
2092 GraphTraceLen = 256;
2093 ShowGraphWindow();
2094 RepaintGraphWindow();
2095 }
2096 return 0;
2097 }
2098
2099
2100 int CmdLoad(const char *Cmd)
2101 {
2102 char filename[FILE_PATH_SIZE] = {0x00};
2103 int len = 0;
2104
2105 len = strlen(Cmd);
2106 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2107 memcpy(filename, Cmd, len);
2108
2109 FILE *f = fopen(filename, "r");
2110 if (!f) {
2111 PrintAndLog("couldn't open '%s'", filename);
2112 return 0;
2113 }
2114
2115 GraphTraceLen = 0;
2116 char line[80];
2117 while (fgets(line, sizeof (line), f)) {
2118 GraphBuffer[GraphTraceLen] = atoi(line);
2119 GraphTraceLen++;
2120 }
2121 fclose(f);
2122 PrintAndLog("loaded %d samples", GraphTraceLen);
2123 RepaintGraphWindow();
2124 return 0;
2125 }
2126
2127 int CmdLtrim(const char *Cmd)
2128 {
2129 int ds = atoi(Cmd);
2130
2131 if (GraphTraceLen <= 0) return 0;
2132
2133 for (int i = ds; i < GraphTraceLen; ++i)
2134 GraphBuffer[i-ds] = GraphBuffer[i];
2135
2136 GraphTraceLen -= ds;
2137 RepaintGraphWindow();
2138 return 0;
2139 }
2140
2141 // trim graph to input argument length
2142 int CmdRtrim(const char *Cmd)
2143 {
2144 int ds = atoi(Cmd);
2145 GraphTraceLen = ds;
2146 RepaintGraphWindow();
2147 return 0;
2148 }
2149
2150 int CmdNorm(const char *Cmd)
2151 {
2152 int i;
2153 int max = INT_MIN, min = INT_MAX;
2154
2155 for (i = 10; i < GraphTraceLen; ++i) {
2156 if (GraphBuffer[i] > max)
2157 max = GraphBuffer[i];
2158 if (GraphBuffer[i] < min)
2159 min = GraphBuffer[i];
2160 }
2161
2162 if (max != min) {
2163 for (i = 0; i < GraphTraceLen; ++i) {
2164 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2165 (max - min);
2166 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2167 }
2168 }
2169 RepaintGraphWindow();
2170 return 0;
2171 }
2172
2173 int CmdPlot(const char *Cmd)
2174 {
2175 ShowGraphWindow();
2176 return 0;
2177 }
2178
2179 int CmdSave(const char *Cmd)
2180 {
2181 char filename[FILE_PATH_SIZE] = {0x00};
2182 int len = 0;
2183
2184 len = strlen(Cmd);
2185 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2186 memcpy(filename, Cmd, len);
2187
2188
2189 FILE *f = fopen(filename, "w");
2190 if(!f) {
2191 PrintAndLog("couldn't open '%s'", filename);
2192 return 0;
2193 }
2194 int i;
2195 for (i = 0; i < GraphTraceLen; i++) {
2196 fprintf(f, "%d\n", GraphBuffer[i]);
2197 }
2198 fclose(f);
2199 PrintAndLog("saved to '%s'", Cmd);
2200 return 0;
2201 }
2202
2203 int CmdScale(const char *Cmd)
2204 {
2205 CursorScaleFactor = atoi(Cmd);
2206 if (CursorScaleFactor == 0) {
2207 PrintAndLog("bad, can't have zero scale");
2208 CursorScaleFactor = 1;
2209 }
2210 RepaintGraphWindow();
2211 return 0;
2212 }
2213
2214 int CmdDirectionalThreshold(const char *Cmd)
2215 {
2216 int8_t upThres = param_get8(Cmd, 0);
2217 int8_t downThres = param_get8(Cmd, 1);
2218
2219 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2220
2221 int lastValue = GraphBuffer[0];
2222 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2223
2224 for (int i = 1; i < GraphTraceLen; ++i) {
2225 // Apply first threshold to samples heading up
2226 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2227 {
2228 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2229 GraphBuffer[i] = 1;
2230 }
2231 // Apply second threshold to samples heading down
2232 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2233 {
2234 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2235 GraphBuffer[i] = -1;
2236 }
2237 else
2238 {
2239 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2240 GraphBuffer[i] = GraphBuffer[i-1];
2241
2242 }
2243 }
2244 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2245 RepaintGraphWindow();
2246 return 0;
2247 }
2248
2249 int CmdZerocrossings(const char *Cmd)
2250 {
2251 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2252 CmdHpf("");
2253
2254 int sign = 1;
2255 int zc = 0;
2256 int lastZc = 0;
2257
2258 for (int i = 0; i < GraphTraceLen; ++i) {
2259 if (GraphBuffer[i] * sign >= 0) {
2260 // No change in sign, reproduce the previous sample count.
2261 zc++;
2262 GraphBuffer[i] = lastZc;
2263 } else {
2264 // Change in sign, reset the sample count.
2265 sign = -sign;
2266 GraphBuffer[i] = lastZc;
2267 if (sign > 0) {
2268 lastZc = zc;
2269 zc = 0;
2270 }
2271 }
2272 }
2273
2274 RepaintGraphWindow();
2275 return 0;
2276 }
2277
2278 int usage_data_bin2hex(){
2279 PrintAndLog("Usage: data bin2hex <binary_digits>");
2280 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2281 return 0;
2282 }
2283
2284 /**
2285 * @brief Utility for conversion via cmdline.
2286 * @param Cmd
2287 * @return
2288 */
2289 int Cmdbin2hex(const char *Cmd)
2290 {
2291 int bg =0, en =0;
2292 if(param_getptr(Cmd, &bg, &en, 0))
2293 {
2294 return usage_data_bin2hex();
2295 }
2296 //Number of digits supplied as argument
2297 size_t length = en - bg +1;
2298 size_t bytelen = (length+7) / 8;
2299 uint8_t* arr = (uint8_t *) malloc(bytelen);
2300 memset(arr, 0, bytelen);
2301 BitstreamOut bout = { arr, 0, 0 };
2302
2303 for(; bg <= en ;bg++)
2304 {
2305 char c = Cmd[bg];
2306 if( c == '1') pushBit(&bout, 1);
2307 else if( c == '0') pushBit(&bout, 0);
2308 else PrintAndLog("Ignoring '%c'", c);
2309 }
2310
2311 if(bout.numbits % 8 != 0)
2312 {
2313 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2314 }
2315
2316 //Uses printf instead of PrintAndLog since the latter
2317 // adds linebreaks to each printout - this way was more convenient since we don't have to
2318 // allocate a string and write to that first...
2319 for(size_t x = 0; x < bytelen ; x++)
2320 {
2321 printf("%02X", arr[x]);
2322 }
2323 printf("\n");
2324 free(arr);
2325 return 0;
2326 }
2327
2328 int usage_data_hex2bin(){
2329 PrintAndLog("Usage: data hex2bin <hex_digits>");
2330 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2331 return 0;
2332 }
2333
2334 int Cmdhex2bin(const char *Cmd)
2335 {
2336 int bg =0, en =0;
2337 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2338
2339 while(bg <= en )
2340 {
2341 char x = Cmd[bg++];
2342 // capitalize
2343 if (x >= 'a' && x <= 'f')
2344 x -= 32;
2345 // convert to numeric value
2346 if (x >= '0' && x <= '9')
2347 x -= '0';
2348 else if (x >= 'A' && x <= 'F')
2349 x -= 'A' - 10;
2350 else
2351 continue;
2352
2353 //Uses printf instead of PrintAndLog since the latter
2354 // adds linebreaks to each printout - this way was more convenient since we don't have to
2355 // allocate a string and write to that first...
2356
2357 for(int i= 0 ; i < 4 ; ++i)
2358 printf("%d",(x >> (3 - i)) & 1);
2359 }
2360 printf("\n");
2361
2362 return 0;
2363 }
2364
2365 static command_t CommandTable[] =
2366 {
2367 {"help", CmdHelp, 1, "This help"},
2368 {"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)"},
2369 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2370 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2371 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2372 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2373 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2374 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2375 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2376 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2377 {"dec", CmdDec, 1, "Decimate samples"},
2378 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2379 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2380 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2381 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2382 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2383 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2384 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2385 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2386 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2387 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2388 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2389 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2390 {"hide", CmdHide, 1, "Hide graph window"},
2391 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2392 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2393 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2394 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2395 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2396 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2397 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2398 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2399 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2400 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2401 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2402 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2403 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2404 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2405 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2406 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2407 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2408 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2409 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2410 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2411 {NULL, NULL, 0, NULL}
2412 };
2413
2414 int CmdData(const char *Cmd){
2415 clearCommandBuffer();
2416 CmdsParse(CommandTable, Cmd);
2417 return 0;
2418 }
2419
2420 int CmdHelp(const char *Cmd)
2421 {
2422 CmdsHelp(CommandTable);
2423 return 0;
2424 }
Proxmark3 GIT tracking
Impressum, Datenschutz