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FIX: bug in nextwatch demod, which if the found psk bits was smaller than the preamb...
[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 int usage_data_printdemodbuf(void){
34 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
35 PrintAndLog("Options:");
36 PrintAndLog(" h This help");
37 PrintAndLog(" x output in hex (omit for binary output)");
38 PrintAndLog(" o <offset> enter offset in # of bits");
39 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
40 return 0;
41 }
42 int usage_data_askem410xdemod(void){
43 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
44 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
45 PrintAndLog(" <invert>, 1 for invert output");
46 PrintAndLog(" [set maximum allowed errors], default = 100.");
47 PrintAndLog("");
48 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
49 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
50 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
51 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
52 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");
53 return 0;
54 }
55 int usage_data_manrawdecode(void){
56 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
57 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
58 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
59 PrintAndLog(" [invert] invert output");
60 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
61 PrintAndLog("");
62 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
63 return 0;
64 }
65 int usage_data_biphaserawdecode(void){
66 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
67 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
68 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
69 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
70 PrintAndLog("");
71 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
72 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
73 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
74 PrintAndLog("");
75 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
76 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
77 return 0;
78 }
79 int usage_data_rawdemod(void){
80 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
81 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
82 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
83 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
84 PrintAndLog(" <options> see specific modulation help for optional parameters");
85 PrintAndLog("");
86 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
87 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
88 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
89 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
90 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
91 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
92 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
93 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
94 return 0;
95 }
96 int usage_data_rawdemod_am(void){
97 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
98 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
99 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
100 PrintAndLog(" <invert>, 1 to invert output");
101 PrintAndLog(" [set maximum allowed errors], default = 100");
102 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
103 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
104 PrintAndLog("");
105 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
106 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
107 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
108 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
109 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");
110 return 0;
111 }
112 int usage_data_rawdemod_ab(void){
113 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
114 PrintAndLog(" [offset], offset to begin biphase, default=0");
115 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
116 PrintAndLog(" <invert>, 1 to invert output");
117 PrintAndLog(" [set maximum allowed errors], default = 100");
118 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
119 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
120 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
121 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
122 PrintAndLog(" NOTE: any other arg must have previous args set to work");
123 PrintAndLog("");
124 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
125 PrintAndLog("");
126 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
127 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
128 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
129 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
130 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
131 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");
132 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");
133 return 0;
134 }
135 int usage_data_rawdemod_ar(void){
136 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
137 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
138 PrintAndLog(" <invert>, 1 to invert output");
139 PrintAndLog(" [set maximum allowed errors], default = 100");
140 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
141 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
142 PrintAndLog("");
143 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
144 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
145 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
146 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
147 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
148 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");
149 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");
150 return 0;
151 }
152 int usage_data_rawdemod_fs(void){
153 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
154 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
155 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
156 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
157 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
158 PrintAndLog("");
159 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
160 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
161 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
162 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
163 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
164 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
165 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
166 return 0;
167 }
168 int usage_data_rawdemod_nr(void){
169 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
170 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
171 PrintAndLog(" <invert>, 1 for invert output");
172 PrintAndLog(" [set maximum allowed errors], default = 100.");
173 PrintAndLog("");
174 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
175 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
176 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
177 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
178 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");
179 return 0;
180 }
181 int usage_data_rawdemod_p1(void){
182 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
183 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
184 PrintAndLog(" <invert>, 1 for invert output");
185 PrintAndLog(" [set maximum allowed errors], default = 100.");
186 PrintAndLog("");
187 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
188 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
189 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
190 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
191 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");
192 return 0;
193 }
194 int usage_data_rawdemod_p2(void){
195 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
196 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
197 PrintAndLog(" <invert>, 1 for invert output");
198 PrintAndLog(" [set maximum allowed errors], default = 100.");
199 PrintAndLog("");
200 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
201 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
202 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
203 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
204 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");
205 return 0;
206 }
207 int usage_data_autocorr(void) {
208 PrintAndLog("Usage: data autocorr [window] [g]");
209 PrintAndLog("Options:");
210 PrintAndLog(" h This help");
211 PrintAndLog(" [window] window length for correlation - default = 4000");
212 PrintAndLog(" g save back to GraphBuffer (overwrite)");
213 return 0;
214 }
215 int usage_data_undecimate(void){
216 PrintAndLog("Usage: data undec [factor]");
217 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
218 PrintAndLog("Options: ");
219 PrintAndLog(" h This help");
220 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
221 PrintAndLog("Example: 'data undec 3'");
222 return 0;
223 }
224 int usage_data_detectclock(void){
225 PrintAndLog("Usage: data detectclock [modulation] <clock>");
226 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
227 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
228 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
229 PrintAndLog("");
230 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
231 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
232 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
233 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
234 return 0;
235 }
236 int usage_data_hex2bin(void){
237 PrintAndLog("Usage: data hex2bin <hex_digits>");
238 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
239 return 0;
240 }
241 int usage_data_bin2hex(void){
242 PrintAndLog("Usage: data bin2hex <binary_digits>");
243 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
244 return 0;
245 }
246
247 //set the demod buffer with given array of binary (one bit per byte)
248 //by marshmellow
249 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
250 {
251 if (buff == NULL)
252 return;
253
254 if ( size >= MAX_DEMOD_BUF_LEN)
255 size = MAX_DEMOD_BUF_LEN;
256
257 size_t i = 0;
258 for (; i < size; i++){
259 DemodBuffer[i]=buff[startIdx++];
260 }
261 DemodBufferLen = size;
262 }
263
264 int CmdSetDebugMode(const char *Cmd)
265 {
266 int demod=0;
267 sscanf(Cmd, "%i", &demod);
268 g_debugMode=(uint8_t)demod;
269 return 1;
270 }
271
272 //by marshmellow
273 void printDemodBuff(void)
274 {
275 int bitLen = DemodBufferLen;
276 if (bitLen<1) {
277 PrintAndLog("no bits found in demod buffer");
278 return;
279 }
280 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
281
282 char *bin = sprint_bin_break(DemodBuffer, bitLen,16);
283 PrintAndLog("%s",bin);
284
285 return;
286 }
287
288 int CmdPrintDemodBuff(const char *Cmd)
289 {
290 char hex[512]={0x00};
291 bool hexMode = false;
292 bool errors = false;
293 uint32_t offset = 0; //could be size_t but no param_get16...
294 uint32_t length = 512;
295 char cmdp = 0;
296 while(param_getchar(Cmd, cmdp) != 0x00)
297 {
298 switch(param_getchar(Cmd, cmdp))
299 {
300 case 'h':
301 case 'H':
302 return usage_data_printdemodbuf();
303 case 'x':
304 case 'X':
305 hexMode = true;
306 cmdp++;
307 break;
308 case 'o':
309 case 'O':
310 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
311 if (!offset) errors = true;
312 cmdp += 2;
313 break;
314 case 'l':
315 case 'L':
316 length = param_get32ex(Cmd, cmdp+1, 512, 10);
317 if (!length) errors = true;
318 cmdp += 2;
319 break;
320 default:
321 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
322 errors = true;
323 break;
324 }
325 if(errors) break;
326 }
327 //Validations
328 if(errors) return usage_data_printdemodbuf();
329 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
330 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
331
332 if (hexMode){
333 char *buf = (char *) (DemodBuffer + offset);
334 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
335 numBits = binarraytohex(hex, buf, numBits);
336 if (numBits==0) return 0;
337 PrintAndLog("DemodBuffer: %s",hex);
338 } else {
339 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
340 }
341 return 1;
342 }
343
344 //by marshmellow
345 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
346 int CmdGetBitStream(const char *Cmd)
347 {
348 int i;
349 CmdHpf(Cmd);
350 for (i = 0; i < GraphTraceLen; i++) {
351 if (GraphBuffer[i] >= 1) {
352 GraphBuffer[i] = 1;
353 } else {
354 GraphBuffer[i] = 0;
355 }
356 }
357 RepaintGraphWindow();
358 return 0;
359 }
360
361 //by marshmellow
362 //print 64 bit EM410x ID in multiple formats
363 void printEM410x(uint32_t hi, uint64_t id)
364 {
365 if (id || hi){
366 uint64_t iii=1;
367 uint64_t id2lo=0;
368 uint32_t ii=0;
369 uint32_t i=0;
370 for (ii=5; ii>0;ii--){
371 for (i=0;i<8;i++){
372 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
373 }
374 }
375 if (hi){
376 //output 88 bit em id
377 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
378 } else{
379 //output 40 bit em id
380 PrintAndLog("\nEM TAG ID : %010llX", id);
381 PrintAndLog("Unique TAG ID : %010llX", id2lo);
382 PrintAndLog("\nPossible de-scramble patterns");
383 PrintAndLog("HoneyWell IdentKey {");
384 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
385 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
386 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
387 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
388 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
389 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
390 PrintAndLog("DEZ 14/IK2 : %014lld",id);
391 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
392 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
393 (id2lo & 0xf000000000) >> 36,
394 (id2lo & 0x0f00000000) >> 32,
395 (id2lo & 0x00f0000000) >> 28,
396 (id2lo & 0x000f000000) >> 24,
397 (id2lo & 0x0000f00000) >> 20,
398 (id2lo & 0x00000f0000) >> 16,
399 (id2lo & 0x000000f000) >> 12,
400 (id2lo & 0x0000000f00) >> 8,
401 (id2lo & 0x00000000f0) >> 4,
402 (id2lo & 0x000000000f)
403 );
404 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
405 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
406 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
407
408 uint32_t p1id = (id & 0xFFFFFF);
409 uint8_t arr[32] = {0x00};
410 int i =0;
411 int j = 23;
412 for (; i < 24; ++i, --j ){
413 arr[i] = (p1id >> i) & 1;
414 }
415
416 uint32_t p1 = 0;
417
418 p1 |= arr[23] << 21;
419 p1 |= arr[22] << 23;
420 p1 |= arr[21] << 20;
421 p1 |= arr[20] << 22;
422
423 p1 |= arr[19] << 18;
424 p1 |= arr[18] << 16;
425 p1 |= arr[17] << 19;
426 p1 |= arr[16] << 17;
427
428 p1 |= arr[15] << 13;
429 p1 |= arr[14] << 15;
430 p1 |= arr[13] << 12;
431 p1 |= arr[12] << 14;
432
433 p1 |= arr[11] << 6;
434 p1 |= arr[10] << 2;
435 p1 |= arr[9] << 7;
436 p1 |= arr[8] << 1;
437
438 p1 |= arr[7] << 0;
439 p1 |= arr[6] << 8;
440 p1 |= arr[5] << 11;
441 p1 |= arr[4] << 3;
442
443 p1 |= arr[3] << 10;
444 p1 |= arr[2] << 4;
445 p1 |= arr[1] << 5;
446 p1 |= arr[0] << 9;
447 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
448
449 uint16_t sebury1 = id & 0xFFFF;
450 uint8_t sebury2 = (id >> 16) & 0x7F;
451 uint32_t sebury3 = id & 0x7FFFFF;
452 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
453 }
454 }
455 return;
456 }
457
458 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
459 {
460 size_t idx = 0;
461 size_t BitLen = DemodBufferLen;
462 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
463 memcpy(BitStream, DemodBuffer, BitLen);
464 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
465 //set GraphBuffer for clone or sim command
466 setDemodBuf(BitStream, BitLen, idx);
467 if (g_debugMode){
468 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
469 printDemodBuff();
470 }
471 if (verbose){
472 PrintAndLog("EM410x pattern found: ");
473 printEM410x(*hi, *lo);
474 }
475 return 1;
476 }
477 return 0;
478 }
479
480 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
481 {
482 bool st = TRUE;
483 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
484 return AskEm410xDecode(verbose, hi, lo);
485 }
486
487 //by marshmellow
488 //takes 3 arguments - clock, invert and maxErr as integers
489 //attempts to demodulate ask while decoding manchester
490 //prints binary found and saves in graphbuffer for further commands
491 int CmdAskEM410xDemod(const char *Cmd)
492 {
493 char cmdp = param_getchar(Cmd, 0);
494 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
495 return usage_data_askem410xdemod();
496
497 uint64_t lo = 0;
498 uint32_t hi = 0;
499 return AskEm410xDemod(Cmd, &hi, &lo, true);
500 }
501
502 //by marshmellow
503 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
504 // (amp may not be needed anymore)
505 //verbose will print results and demoding messages
506 //emSearch will auto search for EM410x format in bitstream
507 //askType switches decode: ask/raw = 0, ask/manchester = 1
508 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
509 int invert=0;
510 int clk=0;
511 int maxErr=100;
512 int maxLen=0;
513 uint8_t askAmp = 0;
514 char amp = param_getchar(Cmd, 0);
515 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
516 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
517 if (!maxLen) maxLen = BIGBUF_SIZE;
518 if (invert != 0 && invert != 1) {
519 PrintAndLog("Invalid argument: %s", Cmd);
520 return 0;
521 }
522 if (clk==1){
523 invert=1;
524 clk=0;
525 }
526 if (amp == 'a' || amp == 'A') askAmp=1;
527 size_t BitLen = getFromGraphBuf(BitStream);
528 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
529 if (BitLen<255) return 0;
530 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
531 int foundclk = 0;
532 bool st = false;
533 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
534 if (st) {
535 *stCheck = st;
536 clk = (clk == 0) ? foundclk : clk;
537 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
538 }
539 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
540 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
541 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
542 return 0;
543 }
544 if (errCnt>maxErr){
545 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
546 return 0;
547 }
548 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
549
550 //output
551 setDemodBuf(BitStream,BitLen,0);
552 if (verbose || g_debugMode){
553 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
554 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
555 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
556 // Now output the bitstream to the scrollback by line of 16 bits
557 printDemodBuff();
558
559 }
560 uint64_t lo = 0;
561 uint32_t hi = 0;
562 if (emSearch){
563 AskEm410xDecode(true, &hi, &lo);
564 }
565 return 1;
566 }
567 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
568 bool st = false;
569 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
570 }
571
572 //by marshmellow
573 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
574 //attempts to demodulate ask while decoding manchester
575 //prints binary found and saves in graphbuffer for further commands
576 int Cmdaskmandemod(const char *Cmd)
577 {
578 char cmdp = param_getchar(Cmd, 0);
579 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
580 return usage_data_rawdemod_am();
581
582 bool st = TRUE;
583 if (Cmd[0]=='s')
584 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
585 else if (Cmd[1] == 's')
586 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
587 else
588 return ASKDemod(Cmd, TRUE, TRUE, 1);
589 }
590
591 //by marshmellow
592 //manchester decode
593 //stricktly take 10 and 01 and convert to 0 and 1
594 int Cmdmandecoderaw(const char *Cmd)
595 {
596 int i =0;
597 int errCnt=0;
598 size_t size=0;
599 int invert=0;
600 int maxErr = 20;
601 char cmdp = param_getchar(Cmd, 0);
602 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H')
603 return usage_data_manrawdecode();
604
605 if (DemodBufferLen==0) return 0;
606 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
607 int high=0,low=0;
608 for (;i<DemodBufferLen;++i){
609 if (DemodBuffer[i]>high) high=DemodBuffer[i];
610 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
611 BitStream[i]=DemodBuffer[i];
612 }
613 if (high>7 || low <0 ){
614 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
615 return 0;
616 }
617
618 sscanf(Cmd, "%i %i", &invert, &maxErr);
619 size=i;
620 errCnt=manrawdecode(BitStream, &size, invert);
621 if (errCnt>=maxErr){
622 PrintAndLog("Too many errors: %d",errCnt);
623 return 0;
624 }
625 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
626 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
627 if (errCnt==0){
628 uint64_t id = 0;
629 uint32_t hi = 0;
630 size_t idx=0;
631 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
632 //need to adjust to set bitstream back to manchester encoded data
633 //setDemodBuf(BitStream, size, idx);
634
635 printEM410x(hi, id);
636 }
637 }
638 return 1;
639 }
640
641 //by marshmellow
642 //biphase decode
643 //take 01 or 10 = 0 and 11 or 00 = 1
644 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
645 // and "invert" default = 0 if 1 it will invert output
646 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
647 int CmdBiphaseDecodeRaw(const char *Cmd)
648 {
649 size_t size=0;
650 int offset=0, invert=0, maxErr=20, errCnt=0;
651 char cmdp = param_getchar(Cmd, 0);
652 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H')
653 return usage_data_biphaserawdecode();
654
655 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
656 if (DemodBufferLen==0){
657 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
658 return 0;
659 }
660 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
661 memcpy(BitStream, DemodBuffer, DemodBufferLen);
662 size = DemodBufferLen;
663 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
664 if (errCnt<0){
665 PrintAndLog("Error during decode:%d", errCnt);
666 return 0;
667 }
668 if (errCnt>maxErr){
669 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
670 return 0;
671 }
672
673 if (errCnt>0){
674 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
675 }
676 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
677 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
678
679 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
680 return 1;
681 }
682
683 //by marshmellow
684 // - ASK Demod then Biphase decode GraphBuffer samples
685 int ASKbiphaseDemod(const char *Cmd, bool verbose)
686 {
687 //ask raw demod GraphBuffer first
688 int offset=0, clk=0, invert=0, maxErr=0;
689 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
690
691 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
692 size_t size = getFromGraphBuf(BitStream);
693 if (size == 0 ) {
694 if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");
695 return 0;
696 }
697 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
698 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
699 if ( errCnt < 0 || errCnt > maxErr ) {
700 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
701 return 0;
702 }
703
704 //attempt to Biphase decode BitStream
705 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
706 if (errCnt < 0){
707 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
708 return 0;
709 }
710 if (errCnt > maxErr) {
711 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
712 return 0;
713 }
714 //success set DemodBuffer and return
715 setDemodBuf(BitStream, size, 0);
716 if (g_debugMode || verbose){
717 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
718 printDemodBuff();
719 }
720 return 1;
721 }
722 //by marshmellow - see ASKbiphaseDemod
723 int Cmdaskbiphdemod(const char *Cmd)
724 {
725 char cmdp = param_getchar(Cmd, 0);
726 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
727 return usage_data_rawdemod_ab();
728
729 return ASKbiphaseDemod(Cmd, TRUE);
730 }
731
732 //by marshmellow
733 //attempts to demodulate and identify a G_Prox_II verex/chubb card
734 //WARNING: if it fails during some points it will destroy the DemodBuffer data
735 // but will leave the GraphBuffer intact.
736 //if successful it will push askraw data back to demod buffer ready for emulation
737 int CmdG_Prox_II_Demod(const char *Cmd)
738 {
739 if (!ASKbiphaseDemod(Cmd, FALSE)){
740 if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
741 return 0;
742 }
743 size_t size = DemodBufferLen;
744 //call lfdemod.c demod for gProxII
745 int ans = gProxII_Demod(DemodBuffer, &size);
746 if (ans < 0){
747 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
748 return 0;
749 }
750 //got a good demod of 96 bits
751 uint8_t ByteStream[8] = {0x00};
752 uint8_t xorKey=0;
753 size_t startIdx = ans + 6; //start after 6 bit preamble
754
755 uint8_t bits_no_spacer[90];
756 //so as to not mess with raw DemodBuffer copy to a new sample array
757 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
758 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
759 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
760 if (bitLen != 72) {
761 if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
762 return 0;
763 }
764 // get key and then get all 8 bytes of payload decoded
765 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
766 for (size_t idx = 0; idx < 8; idx++) {
767 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
768 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
769 }
770 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
771 //
772 uint8_t fmtLen = ByteStream[0]>>2;
773 uint32_t FC = 0;
774 uint32_t Card = 0;
775 //get raw 96 bits to print
776 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
777 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
778 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
779
780 if (fmtLen==36){
781 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
782 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
783 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
784 } else if(fmtLen==26){
785 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
786 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
787 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
788 } else {
789 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
790 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
791 }
792 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
793 setDemodBuf(DemodBuffer+ans, 96, 0);
794 return 1;
795 }
796
797 //by marshmellow
798 //see ASKDemod for what args are accepted
799 int CmdVikingDemod(const char *Cmd)
800 {
801 if (!ASKDemod(Cmd, false, false, 1)) {
802 if (g_debugMode) PrintAndLog("ASKDemod failed");
803 return 0;
804 }
805 size_t size = DemodBufferLen;
806 //call lfdemod.c demod for Viking
807 int ans = VikingDemod_AM(DemodBuffer, &size);
808 if (ans < 0) {
809 if (g_debugMode) PrintAndLog("Error Viking_Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
810 return 0;
811 }
812 //got a good demod
813 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
814 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
815 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
816 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
817 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
818 PrintAndLog("Raw: %08X%08X", raw1,raw2);
819 setDemodBuf(DemodBuffer+ans, 64, 0);
820 return 1;
821 }
822
823 //by marshmellow - see ASKDemod
824 int Cmdaskrawdemod(const char *Cmd)
825 {
826 char cmdp = param_getchar(Cmd, 0);
827 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
828 return usage_data_rawdemod_ar();
829
830 return ASKDemod(Cmd, TRUE, FALSE, 0);
831 }
832
833 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
834 {
835 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
836 size_t Correlation = 0;
837 int maxSum = 0;
838 int lastMax = 0;
839 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
840 for (int i = 0; i < GraphTraceLen - window; ++i) {
841 int sum = 0;
842 for (int j = 0; j < window; ++j) {
843 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
844 }
845 CorrelBuffer[i] = sum;
846 if (sum >= maxSum-100 && sum <= maxSum+100){
847 //another max
848 Correlation = i-lastMax;
849 lastMax = i;
850 if (sum > maxSum) maxSum = sum;
851 } else if (sum > maxSum){
852 maxSum=sum;
853 lastMax = i;
854 }
855 }
856 if (Correlation==0){
857 //try again with wider margin
858 for (int i = 0; i < GraphTraceLen - window; i++){
859 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
860 //another max
861 Correlation = i-lastMax;
862 lastMax = i;
863 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
864 }
865 }
866 }
867 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
868
869 if (SaveGrph){
870 GraphTraceLen = GraphTraceLen - window;
871 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
872 RepaintGraphWindow();
873 }
874 return Correlation;
875 }
876
877 int CmdAutoCorr(const char *Cmd)
878 {
879 char cmdp = param_getchar(Cmd, 0);
880 if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
881 int window = 4000; //set default
882 char grph=0;
883 bool updateGrph = FALSE;
884 sscanf(Cmd, "%i %c", &window, &grph);
885
886 if (window >= GraphTraceLen) {
887 PrintAndLog("window must be smaller than trace (%d samples)",
888 GraphTraceLen);
889 return 0;
890 }
891 if (grph == 'g') updateGrph=TRUE;
892 return AutoCorrelate(window, updateGrph, TRUE);
893 }
894
895 int CmdBitsamples(const char *Cmd)
896 {
897 int cnt = 0;
898 uint8_t got[12288];
899
900 GetFromBigBuf(got, sizeof(got), 0);
901 WaitForResponse(CMD_ACK, NULL);
902
903 for (int j = 0; j < sizeof(got); j++) {
904 for (int k = 0; k < 8; k++) {
905 if(got[j] & (1 << (7 - k))) {
906 GraphBuffer[cnt++] = 1;
907 } else {
908 GraphBuffer[cnt++] = 0;
909 }
910 }
911 }
912 GraphTraceLen = cnt;
913 RepaintGraphWindow();
914 return 0;
915 }
916
917 int CmdBuffClear(const char *Cmd)
918 {
919 UsbCommand c = {CMD_BUFF_CLEAR, {0,0,0}};
920 SendCommand(&c);
921 ClearGraph(true);
922 return 0;
923 }
924
925 int CmdDec(const char *Cmd)
926 {
927 for (int i = 0; i < (GraphTraceLen >> 2); ++i)
928 GraphBuffer[i] = GraphBuffer[i * 2];
929
930 GraphTraceLen >>= 2;
931 PrintAndLog("decimated by 2");
932 RepaintGraphWindow();
933 return 0;
934 }
935 /**
936 * Undecimate - I'd call it 'interpolate', but we'll save that
937 * name until someone does an actual interpolation command, not just
938 * blindly repeating samples
939 * @param Cmd
940 * @return
941 */
942 int CmdUndec(const char *Cmd)
943 {
944 char cmdp = param_getchar(Cmd, 0);
945 if (cmdp == 'h' || cmdp == 'H')
946 return usage_data_undecimate();
947
948 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
949
950 //We have memory, don't we?
951 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
952 uint32_t g_index = 0 ,s_index = 0;
953 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
954 {
955 int count = 0;
956 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
957 swap[s_index+count] = GraphBuffer[g_index];
958 s_index += count;
959 g_index++;
960 }
961
962 memcpy(GraphBuffer, swap, s_index * sizeof(int));
963 GraphTraceLen = s_index;
964 RepaintGraphWindow();
965 return 0;
966 }
967
968 //by marshmellow
969 //shift graph zero up or down based on input + or -
970 int CmdGraphShiftZero(const char *Cmd)
971 {
972 int shift=0;
973 //set options from parameters entered with the command
974 sscanf(Cmd, "%i", &shift);
975 int shiftedVal=0;
976 for(int i = 0; i<GraphTraceLen; i++){
977 shiftedVal=GraphBuffer[i]+shift;
978 if (shiftedVal>127)
979 shiftedVal=127;
980 else if (shiftedVal<-127)
981 shiftedVal=-127;
982 GraphBuffer[i]= shiftedVal;
983 }
984 CmdNorm("");
985 return 0;
986 }
987
988 //by marshmellow
989 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
990 //similar to dirtheshold, threshold commands
991 //takes a threshold length which is the measured length between two samples then determines an edge
992 int CmdAskEdgeDetect(const char *Cmd)
993 {
994 int thresLen = 25;
995 int last = 0;
996 sscanf(Cmd, "%i", &thresLen);
997
998 for(int i = 1; i < GraphTraceLen; ++i){
999 if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
1000 last = 127;
1001 else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
1002 last = -127;
1003
1004 GraphBuffer[i-1] = last;
1005 }
1006 RepaintGraphWindow();
1007 return 0;
1008 }
1009
1010 /* Print our clock rate */
1011 // uses data from graphbuffer
1012 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
1013 int CmdDetectClockRate(const char *Cmd)
1014 {
1015 char cmdp = param_getchar(Cmd, 0);
1016 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H')
1017 return usage_data_detectclock();
1018
1019 int ans = 0;
1020 switch ( cmdp ) {
1021 case 'a' :
1022 case 'A' :
1023 ans = GetAskClock(Cmd+1, true, false);
1024 break;
1025 case 'f' :
1026 case 'F' :
1027 ans = GetFskClock("", true, false);
1028 break;
1029 case 'n' :
1030 case 'N' :
1031 ans = GetNrzClock("", true, false);
1032 break;
1033 case 'p' :
1034 case 'P' :
1035 ans = GetPskClock("", true, false);
1036 break;
1037 default :
1038 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
1039 break;
1040 }
1041 return ans;
1042 }
1043
1044 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
1045 {
1046 static char fType[8];
1047 memset(fType, 0x00, 8);
1048 char *fskType = fType;
1049 if (fchigh==10 && fclow==8){
1050 if (invert) //fsk2a
1051 memcpy(fskType, "FSK2a", 5);
1052 else //fsk2
1053 memcpy(fskType, "FSK2", 4);
1054 } else if (fchigh == 8 && fclow == 5) {
1055 if (invert)
1056 memcpy(fskType, "FSK1", 4);
1057 else
1058 memcpy(fskType, "FSK1a", 5);
1059 } else {
1060 memcpy(fskType, "FSK??", 5);
1061 }
1062 return fskType;
1063 }
1064
1065 //by marshmellow
1066 //fsk raw demod and print binary
1067 //takes 4 arguments - Clock, invert, fchigh, fclow
1068 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1069 int FSKrawDemod(const char *Cmd, bool verbose)
1070 {
1071 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1072 uint8_t rfLen, invert, fchigh, fclow;
1073
1074 //set defaults
1075 //set options from parameters entered with the command
1076 rfLen = param_get8(Cmd, 0);
1077 invert = param_get8(Cmd, 1);
1078 fchigh = param_get8(Cmd, 2);
1079 fclow = param_get8(Cmd, 3);
1080 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
1081 if (rfLen==1) {
1082 invert = 1; //if invert option only is used
1083 rfLen = 0;
1084 }
1085 }
1086
1087 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1088 size_t BitLen = getFromGraphBuf(BitStream);
1089 if (BitLen==0) return 0;
1090 //get field clock lengths
1091 uint16_t fcs=0;
1092 if (!fchigh || !fclow) {
1093 fcs = countFC(BitStream, BitLen, 1);
1094 if (!fcs) {
1095 fchigh = 10;
1096 fclow = 8;
1097 } else {
1098 fchigh = (fcs >> 8) & 0x00FF;
1099 fclow = fcs & 0x00FF;
1100 }
1101 }
1102 //get bit clock length
1103 if (!rfLen) {
1104 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
1105 if (!rfLen) rfLen = 50;
1106 }
1107 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
1108 if (size > 0) {
1109 setDemodBuf(BitStream, size, 0);
1110
1111 // Now output the bitstream to the scrollback by line of 16 bits
1112 if (verbose || g_debugMode) {
1113 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
1114 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
1115 printDemodBuff();
1116 }
1117
1118 return 1;
1119 } else {
1120 if (g_debugMode) PrintAndLog("no FSK data found");
1121 }
1122 return 0;
1123 }
1124
1125 //by marshmellow
1126 //fsk raw demod and print binary
1127 //takes 4 arguments - Clock, invert, fchigh, fclow
1128 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1129 int CmdFSKrawdemod(const char *Cmd)
1130 {
1131 char cmdp = param_getchar(Cmd, 0);
1132 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1133 return usage_data_rawdemod_fs();
1134
1135 return FSKrawDemod(Cmd, TRUE);
1136 }
1137
1138 //by marshmellow (based on existing demod + holiman's refactor)
1139 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1140 //print full HID Prox ID and some bit format details if found
1141 int CmdFSKdemodHID(const char *Cmd)
1142 {
1143 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1144 uint32_t hi2=0, hi=0, lo=0;
1145
1146 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1147 size_t BitLen = getFromGraphBuf(BitStream);
1148 if (BitLen==0) return 0;
1149 //get binary from fsk wave
1150 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1151 if (idx<0){
1152 if (g_debugMode){
1153 if (idx==-1){
1154 PrintAndLog("DEBUG: Just Noise Detected");
1155 } else if (idx == -2) {
1156 PrintAndLog("DEBUG: Error demoding fsk");
1157 } else if (idx == -3) {
1158 PrintAndLog("DEBUG: Preamble not found");
1159 } else if (idx == -4) {
1160 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1161 } else {
1162 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1163 }
1164 }
1165 return 0;
1166 }
1167 if (hi2==0 && hi==0 && lo==0) {
1168 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1169 return 0;
1170 }
1171 if (hi2 != 0){ //extra large HID tags
1172 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1173 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1174 }
1175 else { //standard HID tags <38 bits
1176 uint8_t fmtLen = 0;
1177 uint32_t fc = 0;
1178 uint32_t cardnum = 0;
1179 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1180 uint32_t lo2=0;
1181 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1182 uint8_t idx3 = 1;
1183 while(lo2>1){ //find last bit set to 1 (format len bit)
1184 lo2=lo2>>1;
1185 idx3++;
1186 }
1187 fmtLen =idx3+19;
1188 fc =0;
1189 cardnum=0;
1190 if(fmtLen==26){
1191 cardnum = (lo>>1)&0xFFFF;
1192 fc = (lo>>17)&0xFF;
1193 }
1194 if(fmtLen==34){
1195 cardnum = (lo>>1)&0xFFFF;
1196 fc= ((hi&1)<<15)|(lo>>17);
1197 }
1198 if(fmtLen==35){
1199 cardnum = (lo>>1)&0xFFFFF;
1200 fc = ((hi&1)<<11)|(lo>>21);
1201 }
1202 }
1203 else { //if bit 38 is not set then 37 bit format is used
1204 fmtLen = 37;
1205 fc = 0;
1206 cardnum = 0;
1207 if(fmtLen == 37){
1208 cardnum = (lo>>1)&0x7FFFF;
1209 fc = ((hi&0xF)<<12)|(lo>>20);
1210 }
1211 }
1212 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1213 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1214 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1215 }
1216 setDemodBuf(BitStream,BitLen,idx);
1217 if (g_debugMode){
1218 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1219 printDemodBuff();
1220 }
1221 return 1;
1222 }
1223
1224 //by marshmellow
1225 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1226 //print full Paradox Prox ID and some bit format details if found
1227 int CmdFSKdemodParadox(const char *Cmd)
1228 {
1229 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1230 uint32_t hi2=0, hi=0, lo=0;
1231
1232 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1233 size_t BitLen = getFromGraphBuf(BitStream);
1234 if (BitLen==0) return 0;
1235 //get binary from fsk wave
1236 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1237 if (idx<0){
1238 if (g_debugMode){
1239 if (idx==-1){
1240 PrintAndLog("DEBUG: Just Noise Detected");
1241 } else if (idx == -2) {
1242 PrintAndLog("DEBUG: Error demoding fsk");
1243 } else if (idx == -3) {
1244 PrintAndLog("DEBUG: Preamble not found");
1245 } else if (idx == -4) {
1246 PrintAndLog("DEBUG: Error in Manchester data");
1247 } else {
1248 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1249 }
1250 }
1251 return 0;
1252 }
1253 if (hi2==0 && hi==0 && lo==0){
1254 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1255 return 0;
1256 }
1257 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1258 uint32_t cardnum = (lo>>10)&0xFFFF;
1259 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1260 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1261 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1262
1263 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1264 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1265 setDemodBuf(BitStream,BitLen,idx);
1266 if (g_debugMode){
1267 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1268 printDemodBuff();
1269 }
1270 return 1;
1271 }
1272
1273 //by marshmellow
1274 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1275 //print ioprox ID and some format details
1276 int CmdFSKdemodIO(const char *Cmd)
1277 {
1278 int idx=0;
1279 //something in graphbuffer?
1280 if (GraphTraceLen < 65) {
1281 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1282 return 0;
1283 }
1284 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1285 size_t BitLen = getFromGraphBuf(BitStream);
1286 if (BitLen==0) return 0;
1287
1288 //get binary from fsk wave
1289 idx = IOdemodFSK(BitStream,BitLen);
1290 if (idx<0){
1291 if (g_debugMode){
1292 if (idx==-1){
1293 PrintAndLog("DEBUG: Just Noise Detected");
1294 } else if (idx == -2) {
1295 PrintAndLog("DEBUG: not enough samples");
1296 } else if (idx == -3) {
1297 PrintAndLog("DEBUG: error during fskdemod");
1298 } else if (idx == -4) {
1299 PrintAndLog("DEBUG: Preamble not found");
1300 } else if (idx == -5) {
1301 PrintAndLog("DEBUG: Separator bits not found");
1302 } else {
1303 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1304 }
1305 }
1306 return 0;
1307 }
1308 if (idx==0){
1309 if (g_debugMode){
1310 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1311 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1312 }
1313 return 0;
1314 }
1315 //Index map
1316 //0 10 20 30 40 50 60
1317 //| | | | | | |
1318 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1319 //-----------------------------------------------------------------------------
1320 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1321 //
1322 //XSF(version)facility:codeone+codetwo (raw)
1323 //Handle the data
1324 if (idx+64>BitLen) {
1325 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1326 return 0;
1327 }
1328 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]);
1329 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]);
1330 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]);
1331 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]);
1332 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]);
1333 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]);
1334 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]);
1335
1336 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1337 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1338 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1339 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1340 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1341 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1342 uint16_t calccrc = 0;
1343
1344 for (uint8_t i=1; i<6; ++i){
1345 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1346 }
1347 calccrc &= 0xff;
1348 calccrc = 0xff - calccrc;
1349
1350 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1351
1352 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1353 setDemodBuf(BitStream,64,idx);
1354 if (g_debugMode){
1355 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1356 printDemodBuff();
1357 }
1358 return 1;
1359 }
1360
1361 //by marshmellow
1362 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1363 //print full AWID Prox ID and some bit format details if found
1364 int CmdFSKdemodAWID(const char *Cmd)
1365 {
1366 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1367 size_t size = getFromGraphBuf(BitStream);
1368 if (size==0) return 0;
1369
1370 //get binary from fsk wave
1371 int idx = AWIDdemodFSK(BitStream, &size);
1372 if (idx<=0){
1373 if (g_debugMode){
1374 if (idx == -1)
1375 PrintAndLog("DEBUG: Error - not enough samples");
1376 else if (idx == -2)
1377 PrintAndLog("DEBUG: Error - only noise found");
1378 else if (idx == -3)
1379 PrintAndLog("DEBUG: Error - problem during FSK demod");
1380 else if (idx == -4)
1381 PrintAndLog("DEBUG: Error - AWID preamble not found");
1382 else if (idx == -5)
1383 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1384 else
1385 PrintAndLog("DEBUG: Error %d",idx);
1386 }
1387 return 0;
1388 }
1389
1390 // Index map
1391 // 0 10 20 30 40 50 60
1392 // | | | | | | |
1393 // 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
1394 // -----------------------------------------------------------------------------
1395 // 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
1396 // 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
1397 // |---26 bit---| |-----117----||-------------142-------------|
1398 // b = format bit len, o = odd parity of last 3 bits
1399 // f = facility code, c = card number
1400 // w = wiegand parity
1401 // (26 bit format shown)
1402
1403 //get raw ID before removing parities
1404 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1405 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1406 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1407 setDemodBuf(BitStream,96,idx);
1408
1409 size = removeParity(BitStream, idx+8, 4, 1, 88);
1410 if (size != 66){
1411 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1412 return 0;
1413 }
1414 // ok valid card found!
1415
1416 // Index map
1417 // 0 10 20 30 40 50 60
1418 // | | | | | | |
1419 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1420 // -----------------------------------------------------------------------------
1421 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1422 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1423 // |26 bit| |-117--| |-----142------|
1424 //
1425 // 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000
1426 // bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
1427 // |50 bit| |----4000------| |-----------2248975------------|
1428 // b = format bit len, o = odd parity of last 3 bits
1429 // f = facility code, c = card number
1430 // w = wiegand parity
1431
1432 uint32_t fc = 0;
1433 uint32_t cardnum = 0;
1434 uint32_t code1 = 0;
1435 uint32_t code2 = 0;
1436 uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
1437 switch(fmtLen) {
1438 case 26:
1439 fc = bytebits_to_byte(BitStream + 9, 8);
1440 cardnum = bytebits_to_byte(BitStream + 17, 16);
1441 code1 = bytebits_to_byte(BitStream + 8,fmtLen);
1442 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1443 break;
1444 case 50:
1445 fc = bytebits_to_byte(BitStream + 9, 16);
1446 cardnum = bytebits_to_byte(BitStream + 25, 32);
1447 code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
1448 code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
1449 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1450 break;
1451 default:
1452 if (fmtLen > 32 ) {
1453 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1454 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1455 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1456 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1457 } else {
1458 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1459 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1460 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1461 }
1462 break;
1463 }
1464
1465 if (g_debugMode){
1466 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1467 printDemodBuff();
1468 }
1469 return 1;
1470 }
1471
1472 //by marshmellow
1473 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1474 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1475 int CmdFSKdemodPyramid(const char *Cmd)
1476 {
1477 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1478 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1479 size_t size = getFromGraphBuf(BitStream);
1480 if (size==0) return 0;
1481
1482 //get binary from fsk wave
1483 int idx = PyramiddemodFSK(BitStream, &size);
1484 if (idx < 0){
1485 if (g_debugMode){
1486 if (idx == -5)
1487 PrintAndLog("DEBUG: Error - not enough samples");
1488 else if (idx == -1)
1489 PrintAndLog("DEBUG: Error - only noise found");
1490 else if (idx == -2)
1491 PrintAndLog("DEBUG: Error - problem during FSK demod");
1492 else if (idx == -3)
1493 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1494 else if (idx == -4)
1495 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1496 else
1497 PrintAndLog("DEBUG: Error - idx: %d",idx);
1498 }
1499 return 0;
1500 }
1501 // Index map
1502 // 0 10 20 30 40 50 60
1503 // | | | | | | |
1504 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1505 // -----------------------------------------------------------------------------
1506 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1507 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1508
1509 // 64 70 80 90 100 110 120
1510 // | | | | | | |
1511 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1512 // -----------------------------------------------------------------------------
1513 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1514 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1515 // |---115---||---------71---------|
1516 // s = format start bit, o = odd parity of last 7 bits
1517 // f = facility code, c = card number
1518 // w = wiegand parity, x = extra space for other formats
1519 // p = CRC8maxim checksum
1520 // (26 bit format shown)
1521
1522 //get bytes for checksum calc
1523 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1524 uint8_t csBuff[14] = {0x00};
1525 for (uint8_t i = 0; i < 13; i++){
1526 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1527 }
1528 //check checksum calc
1529 //checksum calc thanks to ICEMAN!!
1530 uint32_t checkCS = CRC8Maxim(csBuff,13);
1531
1532 //get raw ID before removing parities
1533 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1534 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1535 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1536 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1537 setDemodBuf(BitStream,128,idx);
1538
1539 size = removeParity(BitStream, idx+8, 8, 1, 120);
1540 if (size != 105){
1541 if (g_debugMode)
1542 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1543 return 0;
1544 }
1545
1546 // ok valid card found!
1547
1548 // Index map
1549 // 0 10 20 30 40 50 60 70
1550 // | | | | | | | |
1551 // 01234567890123456789012345678901234567890123456789012345678901234567890
1552 // -----------------------------------------------------------------------
1553 // 00000000000000000000000000000000000000000000000000000000000000000000000
1554 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1555
1556 // 71 80 90 100
1557 // | | | |
1558 // 1 2 34567890 1234567890123456 7 8901234
1559 // ---------------------------------------
1560 // 1 1 01110011 0000000001000110 0 1001010
1561 // s w ffffffff cccccccccccccccc w ppppppp
1562 // |--115-| |------71------|
1563 // s = format start bit, o = odd parity of last 7 bits
1564 // f = facility code, c = card number
1565 // w = wiegand parity, x = extra space for other formats
1566 // p = CRC8-Maxim checksum
1567 // (26 bit format shown)
1568
1569 //find start bit to get fmtLen
1570 int j;
1571 for (j=0; j < size; ++j){
1572 if(BitStream[j]) break;
1573 }
1574
1575 uint8_t fmtLen = size-j-8;
1576 uint32_t fc = 0;
1577 uint32_t cardnum = 0;
1578 uint32_t code1 = 0;
1579
1580 if ( fmtLen == 26 ){
1581 fc = bytebits_to_byte(BitStream+73, 8);
1582 cardnum = bytebits_to_byte(BitStream+81, 16);
1583 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1584 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);
1585 } else if (fmtLen == 45) {
1586 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1587 fc = bytebits_to_byte(BitStream+53, 10);
1588 cardnum = bytebits_to_byte(BitStream+63, 32);
1589 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1590 } else {
1591 cardnum = bytebits_to_byte(BitStream+81, 16);
1592 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1593 }
1594 if (checksum == checkCS)
1595 PrintAndLog("Checksum %02x passed", checksum);
1596 else
1597 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1598
1599 if (g_debugMode){
1600 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1601 printDemodBuff();
1602 }
1603 return 1;
1604 }
1605
1606 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1607 // 8 databits + 1 parity (1)
1608 // CIITT 16 chksum
1609 // NATIONAL CODE, ICAR database
1610 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1611 // FLAG (animal/non-animal)
1612 /*
1613 38 IDbits
1614 10 country code
1615 1 extra app bit
1616 14 reserved bits
1617 1 animal bit
1618 16 ccitt CRC chksum over 64bit ID CODE.
1619 24 appli bits.
1620
1621 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1622 */
1623 int CmdFDXBdemodBI(const char *Cmd){
1624
1625 int invert = 1;
1626 int clk = 32;
1627 int errCnt = 0;
1628 int maxErr = 0;
1629 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1630 size_t size = getFromGraphBuf(BitStream);
1631
1632 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1633 if ( errCnt < 0 || errCnt > maxErr ) {
1634 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1635 return 0;
1636 }
1637
1638 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1639 if (errCnt < 0 || errCnt > maxErr ) {
1640 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1641 return 0;
1642 }
1643
1644 int preambleIndex = FDXBdemodBI(BitStream, &size);
1645 if (preambleIndex < 0){
1646 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1647 return 0;
1648 }
1649 if (size != 128) {
1650 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1651 return 0;
1652 }
1653
1654 setDemodBuf(BitStream, 128, preambleIndex);
1655
1656 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1657 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1658 if ( size != 104 ) {
1659 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1660 return 0;
1661 }
1662 if (g_debugMode) {
1663 char *bin = sprint_bin_break(BitStream,size,16);
1664 PrintAndLog("DEBUG BinStream:\n%s",bin);
1665 }
1666 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1667 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1668
1669 //got a good demod
1670 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1671 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1672 uint8_t dataBlockBit = BitStream[48];
1673 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1674 uint8_t animalBit = BitStream[63];
1675 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1676 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1677
1678 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1679 uint8_t raw[8];
1680 num_to_bytes(rawid, 8, raw);
1681
1682 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1683
1684 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1685 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1686 PrintAndLog("National Code: %012llu", NationalCode);
1687 PrintAndLog("CountryCode: %04u", countryCode);
1688 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1689 PrintAndLog("reserved Code: %u", reservedCode);
1690 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1691 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1692 PrintAndLog("Extended: 0x%X\n", extended);
1693
1694 return 1;
1695 }
1696
1697
1698 //by marshmellow
1699 //attempt to psk1 demod graph buffer
1700 int PSKDemod(const char *Cmd, bool verbose)
1701 {
1702 int invert=0;
1703 int clk=0;
1704 int maxErr=100;
1705 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1706 if (clk==1){
1707 invert=1;
1708 clk=0;
1709 }
1710 if (invert != 0 && invert != 1) {
1711 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1712 return 0;
1713 }
1714 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1715 size_t BitLen = getFromGraphBuf(BitStream);
1716 if (BitLen==0) return 0;
1717 uint8_t carrier=countFC(BitStream, BitLen, 0);
1718 if (carrier!=2 && carrier!=4 && carrier!=8){
1719 //invalid carrier
1720 return 0;
1721 }
1722 if (g_debugMode){
1723 PrintAndLog("Carrier: rf/%d",carrier);
1724 }
1725 int errCnt=0;
1726 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1727 if (errCnt > maxErr){
1728 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1729 return 0;
1730 }
1731 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1732 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1733 return 0;
1734 }
1735 if (verbose || g_debugMode){
1736 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1737 if (errCnt>0){
1738 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1739 }
1740 }
1741 //prime demod buffer for output
1742 setDemodBuf(BitStream,BitLen,0);
1743 return 1;
1744 }
1745
1746 // Indala 26 bit decode
1747 // by marshmellow
1748 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1749 int CmdIndalaDecode(const char *Cmd)
1750 {
1751 int ans;
1752 if (strlen(Cmd)>0){
1753 ans = PSKDemod(Cmd, 0);
1754 } else{ //default to RF/32
1755 ans = PSKDemod("32", 0);
1756 }
1757
1758 if (!ans){
1759 if (g_debugMode)
1760 PrintAndLog("Error1: %d",ans);
1761 return 0;
1762 }
1763
1764 uint8_t invert = 0;
1765 size_t size = DemodBufferLen;
1766 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1767 if (startIdx < 0 || size > 224) {
1768 if (g_debugMode)
1769 PrintAndLog("Error2: %d",ans);
1770 return -1;
1771 }
1772 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1773 if (invert)
1774 if (g_debugMode)
1775 PrintAndLog("Had to invert bits");
1776
1777 PrintAndLog("BitLen: %d",DemodBufferLen);
1778 //convert UID to HEX
1779 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1780 uid1=bytebits_to_byte(DemodBuffer,32);
1781 uid2=bytebits_to_byte(DemodBuffer+32,32);
1782 if (DemodBufferLen==64){
1783 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1784 } else {
1785 uid3=bytebits_to_byte(DemodBuffer+64,32);
1786 uid4=bytebits_to_byte(DemodBuffer+96,32);
1787 uid5=bytebits_to_byte(DemodBuffer+128,32);
1788 uid6=bytebits_to_byte(DemodBuffer+160,32);
1789 uid7=bytebits_to_byte(DemodBuffer+192,32);
1790 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1791 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1792 }
1793 if (g_debugMode){
1794 PrintAndLog("DEBUG: printing demodbuffer:");
1795 printDemodBuff();
1796 }
1797 return 1;
1798 }
1799
1800 int CmdPSKNexWatch(const char *Cmd)
1801 {
1802 if (!PSKDemod("", false)) return 0;
1803
1804 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};
1805 size_t startIdx = 0, size = DemodBufferLen;
1806
1807 // sanity check.
1808 if ( size < sizeof(preamble) + 100) return 0;
1809
1810 bool invert = false;
1811 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1812 // if didn't find preamble try again inverting
1813 if (!PSKDemod("1", false)) return 0;
1814
1815 size = DemodBufferLen;
1816 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1817 invert = true;
1818 }
1819 if (size != 128) return 0;
1820 setDemodBuf(DemodBuffer, size, startIdx+4);
1821 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1822 //get ID
1823 uint32_t ID = 0;
1824 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1825 for (uint8_t idx=0; idx<8; idx++){
1826 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1827 }
1828 }
1829 //parity check (TBD)
1830
1831 //checksum check (TBD)
1832
1833 //output
1834 PrintAndLog("NexWatch ID: %d", ID);
1835 if (invert){
1836 PrintAndLog("Had to Invert - probably NexKey");
1837 for (uint8_t idx=0; idx<size; idx++)
1838 DemodBuffer[idx] ^= 1;
1839 }
1840
1841 CmdPrintDemodBuff("x");
1842 return 1;
1843 }
1844
1845 // by marshmellow
1846 // takes 3 arguments - clock, invert, maxErr as integers
1847 // attempts to demodulate nrz only
1848 // prints binary found and saves in demodbuffer for further commands
1849 int NRZrawDemod(const char *Cmd, bool verbose)
1850 {
1851 int invert=0;
1852 int clk=0;
1853 int maxErr=100;
1854 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1855 if (clk==1){
1856 invert=1;
1857 clk=0;
1858 }
1859 if (invert != 0 && invert != 1) {
1860 PrintAndLog("Invalid argument: %s", Cmd);
1861 return 0;
1862 }
1863 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1864 size_t BitLen = getFromGraphBuf(BitStream);
1865 if (BitLen==0) return 0;
1866 int errCnt=0;
1867 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1868 if (errCnt > maxErr){
1869 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1870 return 0;
1871 }
1872 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1873 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1874 return 0;
1875 }
1876 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1877 //prime demod buffer for output
1878 setDemodBuf(BitStream,BitLen,0);
1879
1880 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1881 if (verbose || g_debugMode) {
1882 PrintAndLog("NRZ demoded bitstream:");
1883 // Now output the bitstream to the scrollback by line of 16 bits
1884 printDemodBuff();
1885 }
1886 return 1;
1887 }
1888
1889 int CmdNRZrawDemod(const char *Cmd)
1890 {
1891 char cmdp = param_getchar(Cmd, 0);
1892 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1893 return usage_data_rawdemod_nr();
1894
1895 return NRZrawDemod(Cmd, TRUE);
1896 }
1897
1898 // by marshmellow
1899 // takes 3 arguments - clock, invert, maxErr as integers
1900 // attempts to demodulate psk only
1901 // prints binary found and saves in demodbuffer for further commands
1902 int CmdPSK1rawDemod(const char *Cmd)
1903 {
1904 int ans;
1905 char cmdp = param_getchar(Cmd, 0);
1906 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1907 return usage_data_rawdemod_p1();
1908
1909 ans = PSKDemod(Cmd, TRUE);
1910 //output
1911 if (!ans){
1912 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1913 return 0;
1914 }
1915 PrintAndLog("PSK1 demoded bitstream:");
1916 // Now output the bitstream to the scrollback by line of 16 bits
1917 printDemodBuff();
1918 return 1;
1919 }
1920
1921 // by marshmellow
1922 // takes same args as cmdpsk1rawdemod
1923 int CmdPSK2rawDemod(const char *Cmd)
1924 {
1925 int ans = 0;
1926 char cmdp = param_getchar(Cmd, 0);
1927 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1928 return usage_data_rawdemod_p2();
1929
1930 ans = PSKDemod(Cmd, TRUE);
1931 if (!ans){
1932 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1933 return 0;
1934 }
1935 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1936 PrintAndLog("PSK2 demoded bitstream:");
1937 // Now output the bitstream to the scrollback by line of 16 bits
1938 printDemodBuff();
1939 return 1;
1940 }
1941
1942 // by marshmellow - combines all raw demod functions into one menu command
1943 int CmdRawDemod(const char *Cmd)
1944 {
1945 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1946 char cmdp2 = Cmd[1];
1947 int ans = 0;
1948
1949 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd) < 2)
1950 return usage_data_rawdemod();
1951
1952 if (cmdp == 'f' && cmdp2 == 's')
1953 ans = CmdFSKrawdemod(Cmd+2);
1954 else if(cmdp == 'a' && cmdp2 == 'b')
1955 ans = Cmdaskbiphdemod(Cmd+2);
1956 else if(cmdp == 'a' && cmdp2 == 'm')
1957 ans = Cmdaskmandemod(Cmd+2);
1958 else if(cmdp == 'a' && cmdp2 == 'r')
1959 ans = Cmdaskrawdemod(Cmd+2);
1960 else if(cmdp == 'n' && cmdp2 == 'r')
1961 ans = CmdNRZrawDemod(Cmd+2);
1962 else if(cmdp == 'p' && cmdp2 == '1')
1963 ans = CmdPSK1rawDemod(Cmd+2);
1964 else if(cmdp == 'p' && cmdp2 == '2')
1965 ans = CmdPSK2rawDemod(Cmd+2);
1966 else
1967 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1968
1969 return ans;
1970 }
1971 //iceman: diff sizes on the plotwindow?
1972 int CmdGrid(const char *Cmd)
1973 {
1974 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1975 PlotGridXdefault = PlotGridX;
1976 PlotGridYdefault = PlotGridY;
1977 RepaintGraphWindow();
1978 return 0;
1979 }
1980
1981 int CmdHexsamples(const char *Cmd)
1982 {
1983 int i, j;
1984 int requested = 0;
1985 int offset = 0;
1986 char string_buf[25];
1987 char* string_ptr = string_buf;
1988 uint8_t got[BIGBUF_SIZE];
1989
1990 sscanf(Cmd, "%i %i", &requested, &offset);
1991
1992 /* if no args send something */
1993 if (requested == 0) {
1994 requested = 8;
1995 }
1996 if (offset + requested > sizeof(got)) {
1997 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1998 return 0;
1999 }
2000
2001 GetFromBigBuf(got,requested,offset);
2002 WaitForResponse(CMD_ACK,NULL);
2003
2004 i = 0;
2005 for (j = 0; j < requested; j++) {
2006 i++;
2007 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
2008 if (i == 8) {
2009 *(string_ptr - 1) = '\0'; // remove the trailing space
2010 PrintAndLog("%s", string_buf);
2011 string_buf[0] = '\0';
2012 string_ptr = string_buf;
2013 i = 0;
2014 }
2015 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
2016 *(string_ptr - 1) = '\0';
2017 PrintAndLog("%s", string_buf);
2018 string_buf[0] = '\0';
2019 }
2020 }
2021 return 0;
2022 }
2023
2024 int CmdHide(const char *Cmd)
2025 {
2026 HideGraphWindow();
2027 return 0;
2028 }
2029
2030 //zero mean GraphBuffer
2031 int CmdHpf(const char *Cmd)
2032 {
2033 int i;
2034 int accum = 0;
2035
2036 for (i = 10; i < GraphTraceLen; ++i)
2037 accum += GraphBuffer[i];
2038
2039 accum /= (GraphTraceLen - 10);
2040
2041 for (i = 0; i < GraphTraceLen; ++i)
2042 GraphBuffer[i] -= accum;
2043
2044 RepaintGraphWindow();
2045 return 0;
2046 }
2047
2048 bool _headBit( BitstreamOut *stream)
2049 {
2050 int bytepos = stream->position >> 3; // divide by 8
2051 int bitpos = (stream->position++) & 7; // mask out 00000111
2052 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
2053 }
2054
2055 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
2056 {
2057 int i;
2058 uint8_t val = 0;
2059 for(i = 0 ; i < bits_per_sample; i++)
2060 val |= (_headBit(b) << (7-i));
2061
2062 return val;
2063 }
2064
2065 int getSamples(const char *Cmd, bool silent)
2066 {
2067 //If we get all but the last byte in bigbuf,
2068 // we don't have to worry about remaining trash
2069 // in the last byte in case the bits-per-sample
2070 // does not line up on byte boundaries
2071
2072 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2073
2074 int n = strtol(Cmd, NULL, 0);
2075
2076 if ( n == 0 || n > sizeof(got))
2077 n = sizeof(got);
2078
2079 PrintAndLog("Reading %d bytes from device memory\n", n);
2080 GetFromBigBuf(got,n,0);
2081 PrintAndLog("Data fetched");
2082 UsbCommand response;
2083 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2084 PrintAndLog("timeout while waiting for reply.");
2085 return 1;
2086 }
2087
2088 uint8_t bits_per_sample = 8;
2089
2090 //Old devices without this feature would send 0 at arg[0]
2091 if (response.arg[0] > 0) {
2092 sample_config *sc = (sample_config *) response.d.asBytes;
2093 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2094 bits_per_sample = sc->bits_per_sample;
2095 }
2096
2097 if (bits_per_sample < 8) {
2098 PrintAndLog("Unpacking...");
2099 BitstreamOut bout = { got, bits_per_sample * n, 0};
2100 int j =0;
2101 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2102 uint8_t sample = getByte(bits_per_sample, &bout);
2103 GraphBuffer[j] = ((int) sample )- 128;
2104 }
2105 GraphTraceLen = j;
2106 PrintAndLog("Unpacked %d samples" , j );
2107 } else {
2108 for (int j = 0; j < n; j++) {
2109 GraphBuffer[j] = ((int)got[j]) - 128;
2110 }
2111 GraphTraceLen = n;
2112 }
2113
2114 RepaintGraphWindow();
2115 return 0;
2116 }
2117
2118 int CmdSamples(const char *Cmd)
2119 {
2120 return getSamples(Cmd, false);
2121 }
2122
2123 int CmdTuneSamples(const char *Cmd)
2124 {
2125 int timeout = 0;
2126 printf("\nMeasuring antenna characteristics, please wait...");
2127
2128 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2129 clearCommandBuffer();
2130 SendCommand(&c);
2131 UsbCommand resp;
2132 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2133 timeout++;
2134 printf(".");
2135 if (timeout > 7) {
2136 PrintAndLog("\nNo response from Proxmark. Aborting...");
2137 return 1;
2138 }
2139 }
2140
2141 int peakv, peakf;
2142 int vLf125, vLf134, vHf;
2143 vLf125 = resp.arg[0] & 0xffff;
2144 vLf134 = resp.arg[0] >> 16;
2145 vHf = resp.arg[1] & 0xffff;;
2146 peakf = resp.arg[2] & 0xffff;
2147 peakv = resp.arg[2] >> 16;
2148 PrintAndLog("");
2149 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2150 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2151 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2152 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2153
2154 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2155 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2156 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2157 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2158
2159 if (peakv < LF_UNUSABLE_V)
2160 PrintAndLog("# Your LF antenna is unusable.");
2161 else if (peakv < LF_MARGINAL_V)
2162 PrintAndLog("# Your LF antenna is marginal.");
2163 if (vHf < HF_UNUSABLE_V)
2164 PrintAndLog("# Your HF antenna is unusable.");
2165 else if (vHf < HF_MARGINAL_V)
2166 PrintAndLog("# Your HF antenna is marginal.");
2167
2168 if (peakv >= LF_UNUSABLE_V) {
2169 for (int i = 0; i < 256; i++) {
2170 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2171 }
2172 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2173 PrintAndLog("\n");
2174 GraphTraceLen = 256;
2175 ShowGraphWindow();
2176 RepaintGraphWindow();
2177 }
2178 return 0;
2179 }
2180
2181 int CmdLoad(const char *Cmd)
2182 {
2183 char filename[FILE_PATH_SIZE] = {0x00};
2184 int len = 0;
2185
2186 len = strlen(Cmd);
2187 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2188 memcpy(filename, Cmd, len);
2189
2190 FILE *f = fopen(filename, "r");
2191 if (!f) {
2192 PrintAndLog("couldn't open '%s'", filename);
2193 return 0;
2194 }
2195
2196 GraphTraceLen = 0;
2197 char line[80];
2198 while (fgets(line, sizeof (line), f)) {
2199 GraphBuffer[GraphTraceLen] = atoi(line);
2200 GraphTraceLen++;
2201 }
2202 fclose(f);
2203 PrintAndLog("loaded %d samples", GraphTraceLen);
2204 RepaintGraphWindow();
2205 return 0;
2206 }
2207
2208 int CmdLtrim(const char *Cmd)
2209 {
2210 int ds = atoi(Cmd);
2211
2212 if (GraphTraceLen <= 0) return 0;
2213
2214 for (int i = ds; i < GraphTraceLen; ++i)
2215 GraphBuffer[i-ds] = GraphBuffer[i];
2216
2217 GraphTraceLen -= ds;
2218 RepaintGraphWindow();
2219 return 0;
2220 }
2221
2222 // trim graph to input argument length
2223 int CmdRtrim(const char *Cmd)
2224 {
2225 int ds = atoi(Cmd);
2226 GraphTraceLen = ds;
2227 RepaintGraphWindow();
2228 return 0;
2229 }
2230
2231 int CmdNorm(const char *Cmd)
2232 {
2233 int i;
2234 int max = INT_MIN, min = INT_MAX;
2235
2236 for (i = 10; i < GraphTraceLen; ++i) {
2237 if (GraphBuffer[i] > max) max = GraphBuffer[i];
2238 if (GraphBuffer[i] < min) min = GraphBuffer[i];
2239 }
2240
2241 if (max != min) {
2242 for (i = 0; i < GraphTraceLen; ++i) {
2243 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / (max - min);
2244 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2245 }
2246 }
2247 RepaintGraphWindow();
2248 return 0;
2249 }
2250
2251 int CmdPlot(const char *Cmd)
2252 {
2253 ShowGraphWindow();
2254 return 0;
2255 }
2256
2257 int CmdSave(const char *Cmd)
2258 {
2259 char filename[FILE_PATH_SIZE] = {0x00};
2260 int len = 0;
2261
2262 len = strlen(Cmd);
2263 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2264 memcpy(filename, Cmd, len);
2265
2266
2267 FILE *f = fopen(filename, "w");
2268 if(!f) {
2269 PrintAndLog("couldn't open '%s'", filename);
2270 return 0;
2271 }
2272 int i;
2273 for (i = 0; i < GraphTraceLen; i++) {
2274 fprintf(f, "%d\n", GraphBuffer[i]);
2275 }
2276 fclose(f);
2277 PrintAndLog("saved to '%s'", Cmd);
2278 return 0;
2279 }
2280
2281 int CmdScale(const char *Cmd)
2282 {
2283 CursorScaleFactor = atoi(Cmd);
2284 if (CursorScaleFactor == 0) {
2285 PrintAndLog("bad, can't have zero scale");
2286 CursorScaleFactor = 1;
2287 }
2288 RepaintGraphWindow();
2289 return 0;
2290 }
2291
2292 int CmdDirectionalThreshold(const char *Cmd)
2293 {
2294 int8_t upThres = param_get8(Cmd, 0);
2295 int8_t downThres = param_get8(Cmd, 1);
2296
2297 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2298
2299 int lastValue = GraphBuffer[0];
2300 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2301
2302 for (int i = 1; i < GraphTraceLen; ++i) {
2303 // Apply first threshold to samples heading up
2304 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2305 {
2306 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2307 GraphBuffer[i] = 1;
2308 }
2309 // Apply second threshold to samples heading down
2310 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2311 {
2312 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2313 GraphBuffer[i] = -1;
2314 }
2315 else
2316 {
2317 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2318 GraphBuffer[i] = GraphBuffer[i-1];
2319 }
2320 }
2321 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2322 RepaintGraphWindow();
2323 return 0;
2324 }
2325
2326 int CmdZerocrossings(const char *Cmd)
2327 {
2328 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2329 CmdHpf("");
2330
2331 int sign = 1;
2332 int zc = 0;
2333 int lastZc = 0;
2334
2335 for (int i = 0; i < GraphTraceLen; ++i) {
2336 if (GraphBuffer[i] * sign >= 0) {
2337 // No change in sign, reproduce the previous sample count.
2338 zc++;
2339 GraphBuffer[i] = lastZc;
2340 } else {
2341 // Change in sign, reset the sample count.
2342 sign = -sign;
2343 GraphBuffer[i] = lastZc;
2344 if (sign > 0) {
2345 lastZc = zc;
2346 zc = 0;
2347 }
2348 }
2349 }
2350
2351 RepaintGraphWindow();
2352 return 0;
2353 }
2354
2355 /**
2356 * @brief Utility for conversion via cmdline.
2357 * @param Cmd
2358 * @return
2359 */
2360 int Cmdbin2hex(const char *Cmd)
2361 {
2362 int bg =0, en =0;
2363 if(param_getptr(Cmd, &bg, &en, 0))
2364 return usage_data_bin2hex();
2365
2366 //Number of digits supplied as argument
2367 size_t length = en - bg +1;
2368 size_t bytelen = (length+7) / 8;
2369 uint8_t* arr = (uint8_t *) malloc(bytelen);
2370 memset(arr, 0, bytelen);
2371 BitstreamOut bout = { arr, 0, 0 };
2372
2373 for (; bg <= en ;bg++) {
2374 char c = Cmd[bg];
2375 if( c == '1') pushBit(&bout, 1);
2376 else if( c == '0') pushBit(&bout, 0);
2377 else PrintAndLog("Ignoring '%c'", c);
2378 }
2379
2380 if (bout.numbits % 8 != 0)
2381 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2382
2383 //Uses printf instead of PrintAndLog since the latter
2384 // adds linebreaks to each printout - this way was more convenient since we don't have to
2385 // allocate a string and write to that first...
2386 for(size_t x = 0; x < bytelen ; x++)
2387 printf("%02X", arr[x]);
2388
2389 printf("\n");
2390 free(arr);
2391 return 0;
2392 }
2393
2394 int Cmdhex2bin(const char *Cmd)
2395 {
2396 int bg =0, en =0;
2397 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2398
2399 while (bg <= en ) {
2400 char x = Cmd[bg++];
2401 // capitalize
2402 if (x >= 'a' && x <= 'f')
2403 x -= 32;
2404 // convert to numeric value
2405 if (x >= '0' && x <= '9')
2406 x -= '0';
2407 else if (x >= 'A' && x <= 'F')
2408 x -= 'A' - 10;
2409 else
2410 continue;
2411
2412 //Uses printf instead of PrintAndLog since the latter
2413 // adds linebreaks to each printout - this way was more convenient since we don't have to
2414 // allocate a string and write to that first...
2415
2416 for(int i= 0 ; i < 4 ; ++i)
2417 printf("%d",(x >> (3 - i)) & 1);
2418 }
2419 printf("\n");
2420
2421 return 0;
2422 }
2423
2424 int CmdDataIIR(const char *Cmd){
2425
2426 uint8_t k = param_get8(Cmd,0);
2427 //iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
2428 iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
2429 RepaintGraphWindow();
2430 return 0;
2431 }
2432
2433 static command_t CommandTable[] =
2434 {
2435 {"help", CmdHelp, 1, "This help"},
2436 {"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)"},
2437 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2438 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2439 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2440 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2441 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2442 {"bin2hex", Cmdbin2hex, 1, "<digits> -- Converts binary to hexadecimal"},
2443 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2444 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2445 {"dec", CmdDec, 1, "Decimate samples"},
2446 {"detectclock", CmdDetectClockRate, 1, "[<a|f|n|p>] Detect ASK, FSK, NRZ, PSK clock rate of wave in GraphBuffer"},
2447 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2448 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2449 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2450 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2451 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2452 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2453 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2454 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2455 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2456 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2457 {"hex2bin", Cmdhex2bin, 1, "<hexadecimal> -- Converts hexadecimal to binary"},
2458 {"hide", CmdHide, 1, "Hide graph window"},
2459 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2460 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2461 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2462 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2463 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2464 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2465 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2466 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2467 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2468 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2469 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2470 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2471 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2472 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2473 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2474 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2475 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2476 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2477 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2478 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2479 {"iir", CmdDataIIR, 0, "apply IIR buttersworth filter on plotdata"},
2480 {NULL, NULL, 0, NULL}
2481 };
2482
2483 int CmdData(const char *Cmd){
2484 clearCommandBuffer();
2485 CmdsParse(CommandTable, Cmd);
2486 return 0;
2487 }
2488
2489 int CmdHelp(const char *Cmd)
2490 {
2491 CmdsHelp(CommandTable);
2492 return 0;
2493 }
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