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CHG: 'LF VISA2000' adding askedgedetection when decoding allows for some traces to...
[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 size = DemodBufferLen;
462 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
463 memcpy(BitStream, DemodBuffer, size);
464 int ans = Em410xDecode(BitStream, &size, &idx, hi, lo);
465 if ( ans < 0){
466 if (g_debugMode){
467
468 if (ans == -1)
469 PrintAndLog("DEBUG: Error - Em410x not only 0|1 in decoded bitstream");
470 else if (ans == -3)
471 PrintAndLog("DEBUG: Error - Em410x Size not correct: %d", size);
472 else if (ans == -4)
473 PrintAndLog("DEBUG: Error - Em410x preamble not found");
474 else if (ans == -5)
475 PrintAndLog("DEBUG: Error - Em410x parity failed");
476 }
477 return 0;
478 }
479
480 //set GraphBuffer for clone or sim command
481 setDemodBuf(BitStream, size, idx);
482 if (g_debugMode){
483 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, size);
484 printDemodBuff();
485 }
486 if (verbose){
487 PrintAndLog("EM410x pattern found: ");
488 printEM410x(*hi, *lo);
489 }
490 return 1;
491 }
492
493 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
494 {
495 bool st = TRUE;
496 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
497 return AskEm410xDecode(verbose, hi, lo);
498 }
499
500 //by marshmellow
501 //takes 3 arguments - clock, invert and maxErr as integers
502 //attempts to demodulate ask while decoding manchester
503 //prints binary found and saves in graphbuffer for further commands
504 int CmdAskEM410xDemod(const char *Cmd)
505 {
506 char cmdp = param_getchar(Cmd, 0);
507 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
508 return usage_data_askem410xdemod();
509
510 uint64_t lo = 0;
511 uint32_t hi = 0;
512 return AskEm410xDemod(Cmd, &hi, &lo, true);
513 }
514
515 //by marshmellow
516 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
517 // (amp may not be needed anymore)
518 //verbose will print results and demoding messages
519 //emSearch will auto search for EM410x format in bitstream
520 //askType switches decode: ask/raw = 0, ask/manchester = 1
521 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
522 int invert=0;
523 int clk=0;
524 int maxErr=100;
525 int maxLen=0;
526 uint8_t askAmp = 0;
527 char amp = param_getchar(Cmd, 0);
528 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
529 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
530 if (!maxLen) maxLen = BIGBUF_SIZE;
531 if (invert != 0 && invert != 1) {
532 PrintAndLog("Invalid argument: %s", Cmd);
533 return 0;
534 }
535 if (clk==1){
536 invert=1;
537 clk=0;
538 }
539 if (amp == 'a' || amp == 'A') askAmp=1;
540 size_t BitLen = getFromGraphBuf(BitStream);
541 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
542 if (BitLen<255) return 0;
543 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
544 int foundclk = 0;
545 bool st = false;
546 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
547 if (st) {
548 *stCheck = st;
549 clk = (clk == 0) ? foundclk : clk;
550 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
551 }
552 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
553 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
554 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
555 return 0;
556 }
557 if (errCnt>maxErr){
558 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
559 return 0;
560 }
561 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
562
563 //output
564 setDemodBuf(BitStream,BitLen,0);
565 if (verbose || g_debugMode){
566 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
567 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
568 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
569 // Now output the bitstream to the scrollback by line of 16 bits
570 printDemodBuff();
571
572 }
573 uint64_t lo = 0;
574 uint32_t hi = 0;
575 if (emSearch){
576 AskEm410xDecode(true, &hi, &lo);
577 }
578 return 1;
579 }
580 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
581 bool st = false;
582 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
583 }
584
585 //by marshmellow
586 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
587 //attempts to demodulate ask while decoding manchester
588 //prints binary found and saves in graphbuffer for further commands
589 int Cmdaskmandemod(const char *Cmd)
590 {
591 char cmdp = param_getchar(Cmd, 0);
592 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
593 return usage_data_rawdemod_am();
594
595 bool st = TRUE;
596 if (Cmd[0]=='s')
597 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
598 else if (Cmd[1] == 's')
599 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
600 else
601 return ASKDemod(Cmd, TRUE, TRUE, 1);
602 }
603
604 //by marshmellow
605 //manchester decode
606 //stricktly take 10 and 01 and convert to 0 and 1
607 int Cmdmandecoderaw(const char *Cmd)
608 {
609 int i =0;
610 int errCnt=0;
611 size_t size=0;
612 int invert=0;
613 int maxErr = 20;
614 char cmdp = param_getchar(Cmd, 0);
615 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H')
616 return usage_data_manrawdecode();
617
618 if (DemodBufferLen==0) return 0;
619 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
620 int high=0,low=0;
621 for (;i<DemodBufferLen;++i){
622 if (DemodBuffer[i]>high) high=DemodBuffer[i];
623 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
624 BitStream[i]=DemodBuffer[i];
625 }
626 if (high>7 || low <0 ){
627 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
628 return 0;
629 }
630
631 sscanf(Cmd, "%i %i", &invert, &maxErr);
632 size=i;
633 errCnt=manrawdecode(BitStream, &size, invert);
634 if (errCnt>=maxErr){
635 PrintAndLog("Too many errors: %d",errCnt);
636 return 0;
637 }
638 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
639 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
640 if (errCnt==0){
641 uint64_t id = 0;
642 uint32_t hi = 0;
643 size_t idx=0;
644 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
645 //need to adjust to set bitstream back to manchester encoded data
646 //setDemodBuf(BitStream, size, idx);
647
648 printEM410x(hi, id);
649 }
650 }
651 return 1;
652 }
653
654 //by marshmellow
655 //biphase decode
656 //take 01 or 10 = 0 and 11 or 00 = 1
657 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
658 // and "invert" default = 0 if 1 it will invert output
659 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
660 int CmdBiphaseDecodeRaw(const char *Cmd)
661 {
662 size_t size=0;
663 int offset=0, invert=0, maxErr=20, errCnt=0;
664 char cmdp = param_getchar(Cmd, 0);
665 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H')
666 return usage_data_biphaserawdecode();
667
668 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
669 if (DemodBufferLen==0){
670 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
671 return 0;
672 }
673 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
674 memcpy(BitStream, DemodBuffer, DemodBufferLen);
675 size = DemodBufferLen;
676 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
677 if (errCnt<0){
678 PrintAndLog("Error during decode:%d", errCnt);
679 return 0;
680 }
681 if (errCnt>maxErr){
682 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
683 return 0;
684 }
685
686 if (errCnt>0){
687 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
688 }
689 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
690 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
691
692 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
693 return 1;
694 }
695
696 //by marshmellow
697 // - ASK Demod then Biphase decode GraphBuffer samples
698 int ASKbiphaseDemod(const char *Cmd, bool verbose)
699 {
700 //ask raw demod GraphBuffer first
701 int offset=0, clk=0, invert=0, maxErr=0;
702 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
703
704 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
705 size_t size = getFromGraphBuf(BitStream);
706 if (size == 0 ) {
707 if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");
708 return 0;
709 }
710 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
711 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
712 if ( errCnt < 0 || errCnt > maxErr ) {
713 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
714 return 0;
715 }
716
717 //attempt to Biphase decode BitStream
718 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
719 if (errCnt < 0){
720 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
721 return 0;
722 }
723 if (errCnt > maxErr) {
724 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
725 return 0;
726 }
727 //success set DemodBuffer and return
728 setDemodBuf(BitStream, size, 0);
729 if (g_debugMode || verbose){
730 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
731 printDemodBuff();
732 }
733 return 1;
734 }
735 //by marshmellow - see ASKbiphaseDemod
736 int Cmdaskbiphdemod(const char *Cmd)
737 {
738 char cmdp = param_getchar(Cmd, 0);
739 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
740 return usage_data_rawdemod_ab();
741
742 return ASKbiphaseDemod(Cmd, TRUE);
743 }
744
745 //by marshmellow
746 //attempts to demodulate and identify a G_Prox_II verex/chubb card
747 //WARNING: if it fails during some points it will destroy the DemodBuffer data
748 // but will leave the GraphBuffer intact.
749 //if successful it will push askraw data back to demod buffer ready for emulation
750 int CmdG_Prox_II_Demod(const char *Cmd)
751 {
752 if (!ASKbiphaseDemod(Cmd, FALSE)){
753 if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
754 return 0;
755 }
756 size_t size = DemodBufferLen;
757 //call lfdemod.c demod for gProxII
758 int ans = gProxII_Demod(DemodBuffer, &size);
759 if (ans < 0){
760 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
761 return 0;
762 }
763 //got a good demod of 96 bits
764 uint8_t ByteStream[8] = {0x00};
765 uint8_t xorKey=0;
766 size_t startIdx = ans + 6; //start after 6 bit preamble
767
768 uint8_t bits_no_spacer[90];
769 //so as to not mess with raw DemodBuffer copy to a new sample array
770 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
771 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
772 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
773 if (bitLen != 72) {
774 if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
775 return 0;
776 }
777 // get key and then get all 8 bytes of payload decoded
778 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
779 for (size_t idx = 0; idx < 8; idx++) {
780 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
781 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
782 }
783 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
784 //
785 uint8_t fmtLen = ByteStream[0]>>2;
786 uint32_t FC = 0;
787 uint32_t Card = 0;
788 //get raw 96 bits to print
789 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
790 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
791 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
792
793 if (fmtLen==36){
794 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
795 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
796 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
797 } else if(fmtLen==26){
798 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
799 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
800 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
801 } else {
802 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
803 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
804 }
805 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
806 setDemodBuf(DemodBuffer+ans, 96, 0);
807 return 1;
808 }
809
810 //by marshmellow
811 //see ASKDemod for what args are accepted
812 int CmdVikingDemod(const char *Cmd)
813 {
814 if (!ASKDemod(Cmd, false, false, 1)) {
815 if (g_debugMode) PrintAndLog("ASKDemod failed");
816 return 0;
817 }
818 size_t size = DemodBufferLen;
819 //call lfdemod.c demod for Viking
820 int ans = VikingDemod_AM(DemodBuffer, &size);
821 if (ans < 0) {
822 if (g_debugMode) PrintAndLog("Error Viking_Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
823 return 0;
824 }
825 //got a good demod
826 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
827 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
828 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
829 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
830 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
831 PrintAndLog("Raw: %08X%08X", raw1,raw2);
832 setDemodBuf(DemodBuffer+ans, 64, 0);
833 return 1;
834 }
835
836 //by marshmellow - see ASKDemod
837 int Cmdaskrawdemod(const char *Cmd)
838 {
839 char cmdp = param_getchar(Cmd, 0);
840 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
841 return usage_data_rawdemod_ar();
842
843 return ASKDemod(Cmd, TRUE, FALSE, 0);
844 }
845
846 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
847 {
848 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
849 size_t Correlation = 0;
850 int maxSum = 0;
851 int lastMax = 0;
852 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
853 for (int i = 0; i < GraphTraceLen - window; ++i) {
854 int sum = 0;
855 for (int j = 0; j < window; ++j) {
856 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
857 }
858 CorrelBuffer[i] = sum;
859 if (sum >= maxSum-100 && sum <= maxSum+100){
860 //another max
861 Correlation = i-lastMax;
862 lastMax = i;
863 if (sum > maxSum) maxSum = sum;
864 } else if (sum > maxSum){
865 maxSum=sum;
866 lastMax = i;
867 }
868 }
869 if (Correlation==0){
870 //try again with wider margin
871 for (int i = 0; i < GraphTraceLen - window; i++){
872 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
873 //another max
874 Correlation = i-lastMax;
875 lastMax = i;
876 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
877 }
878 }
879 }
880 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
881
882 if (SaveGrph){
883 GraphTraceLen = GraphTraceLen - window;
884 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
885 RepaintGraphWindow();
886 }
887 return Correlation;
888 }
889
890 int CmdAutoCorr(const char *Cmd)
891 {
892 char cmdp = param_getchar(Cmd, 0);
893 if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
894 int window = 4000; //set default
895 char grph=0;
896 bool updateGrph = FALSE;
897 sscanf(Cmd, "%i %c", &window, &grph);
898
899 if (window >= GraphTraceLen) {
900 PrintAndLog("window must be smaller than trace (%d samples)",
901 GraphTraceLen);
902 return 0;
903 }
904 if (grph == 'g') updateGrph=TRUE;
905 return AutoCorrelate(window, updateGrph, TRUE);
906 }
907
908 int CmdBitsamples(const char *Cmd)
909 {
910 int cnt = 0;
911 uint8_t got[12288];
912
913 GetFromBigBuf(got, sizeof(got), 0);
914 WaitForResponse(CMD_ACK, NULL);
915
916 for (int j = 0; j < sizeof(got); j++) {
917 for (int k = 0; k < 8; k++) {
918 if(got[j] & (1 << (7 - k))) {
919 GraphBuffer[cnt++] = 1;
920 } else {
921 GraphBuffer[cnt++] = 0;
922 }
923 }
924 }
925 GraphTraceLen = cnt;
926 RepaintGraphWindow();
927 return 0;
928 }
929
930 int CmdBuffClear(const char *Cmd)
931 {
932 UsbCommand c = {CMD_BUFF_CLEAR, {0,0,0}};
933 SendCommand(&c);
934 ClearGraph(true);
935 return 0;
936 }
937
938 int CmdDec(const char *Cmd)
939 {
940 for (int i = 0; i < (GraphTraceLen >> 2); ++i)
941 GraphBuffer[i] = GraphBuffer[i * 2];
942
943 GraphTraceLen >>= 2;
944 PrintAndLog("decimated by 2");
945 RepaintGraphWindow();
946 return 0;
947 }
948 /**
949 * Undecimate - I'd call it 'interpolate', but we'll save that
950 * name until someone does an actual interpolation command, not just
951 * blindly repeating samples
952 * @param Cmd
953 * @return
954 */
955 int CmdUndec(const char *Cmd)
956 {
957 char cmdp = param_getchar(Cmd, 0);
958 if (cmdp == 'h' || cmdp == 'H')
959 return usage_data_undecimate();
960
961 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
962
963 //We have memory, don't we?
964 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
965 uint32_t g_index = 0 ,s_index = 0;
966 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
967 {
968 int count = 0;
969 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
970 swap[s_index+count] = GraphBuffer[g_index];
971 s_index += count;
972 g_index++;
973 }
974
975 memcpy(GraphBuffer, swap, s_index * sizeof(int));
976 GraphTraceLen = s_index;
977 RepaintGraphWindow();
978 return 0;
979 }
980
981 //by marshmellow
982 //shift graph zero up or down based on input + or -
983 int CmdGraphShiftZero(const char *Cmd)
984 {
985 int shift = 0, shiftedVal = 0;
986 //set options from parameters entered with the command
987 sscanf(Cmd, "%i", &shift);
988
989 for(int i = 0; i<GraphTraceLen; i++){
990 shiftedVal=GraphBuffer[i]+shift;
991 if (shiftedVal > 127)
992 shiftedVal = 127;
993 else if (shiftedVal < -127)
994 shiftedVal = -127;
995 GraphBuffer[i] = shiftedVal;
996 }
997 CmdNorm("");
998 return 0;
999 }
1000
1001 //by marshmellow
1002 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
1003 //similar to dirtheshold, threshold commands
1004 //takes a threshold length which is the measured length between two samples then determines an edge
1005 int CmdAskEdgeDetect(const char *Cmd)
1006 {
1007 int thresLen = 25;
1008 int last = 0;
1009 sscanf(Cmd, "%i", &thresLen);
1010
1011 for(int i = 1; i < GraphTraceLen; ++i){
1012 if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
1013 last = 127;
1014 else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
1015 last = -127;
1016
1017 GraphBuffer[i-1] = last;
1018 }
1019 RepaintGraphWindow();
1020 return 0;
1021 }
1022
1023 /* Print our clock rate */
1024 // uses data from graphbuffer
1025 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
1026 int CmdDetectClockRate(const char *Cmd)
1027 {
1028 char cmdp = param_getchar(Cmd, 0);
1029 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H')
1030 return usage_data_detectclock();
1031
1032 int ans = 0;
1033 switch ( cmdp ) {
1034 case 'a' :
1035 case 'A' :
1036 ans = GetAskClock(Cmd+1, true, false);
1037 break;
1038 case 'f' :
1039 case 'F' :
1040 ans = GetFskClock("", true, false);
1041 break;
1042 case 'n' :
1043 case 'N' :
1044 ans = GetNrzClock("", true, false);
1045 break;
1046 case 'p' :
1047 case 'P' :
1048 ans = GetPskClock("", true, false);
1049 break;
1050 default :
1051 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
1052 break;
1053 }
1054 return ans;
1055 }
1056
1057 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
1058 {
1059 static char fType[8];
1060 memset(fType, 0x00, 8);
1061 char *fskType = fType;
1062 if (fchigh==10 && fclow==8){
1063 if (invert) //fsk2a
1064 memcpy(fskType, "FSK2a", 5);
1065 else //fsk2
1066 memcpy(fskType, "FSK2", 4);
1067 } else if (fchigh == 8 && fclow == 5) {
1068 if (invert)
1069 memcpy(fskType, "FSK1", 4);
1070 else
1071 memcpy(fskType, "FSK1a", 5);
1072 } else {
1073 memcpy(fskType, "FSK??", 5);
1074 }
1075 return fskType;
1076 }
1077
1078 //by marshmellow
1079 //fsk raw demod and print binary
1080 //takes 4 arguments - Clock, invert, fchigh, fclow
1081 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1082 int FSKrawDemod(const char *Cmd, bool verbose)
1083 {
1084 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1085 uint8_t rfLen, invert, fchigh, fclow;
1086
1087 //set defaults
1088 //set options from parameters entered with the command
1089 rfLen = param_get8(Cmd, 0);
1090 invert = param_get8(Cmd, 1);
1091 fchigh = param_get8(Cmd, 2);
1092 fclow = param_get8(Cmd, 3);
1093 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
1094 if (rfLen==1) {
1095 invert = 1; //if invert option only is used
1096 rfLen = 0;
1097 }
1098 }
1099
1100 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1101 size_t BitLen = getFromGraphBuf(BitStream);
1102 if (BitLen==0) return 0;
1103 //get field clock lengths
1104 uint16_t fcs=0;
1105 if (!fchigh || !fclow) {
1106 fcs = countFC(BitStream, BitLen, 1);
1107 if (!fcs) {
1108 fchigh = 10;
1109 fclow = 8;
1110 } else {
1111 fchigh = (fcs >> 8) & 0x00FF;
1112 fclow = fcs & 0x00FF;
1113 }
1114 }
1115 //get bit clock length
1116 if (!rfLen) {
1117 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
1118 if (!rfLen) rfLen = 50;
1119 }
1120 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
1121 if (size > 0) {
1122 setDemodBuf(BitStream, size, 0);
1123
1124 // Now output the bitstream to the scrollback by line of 16 bits
1125 if (verbose || g_debugMode) {
1126 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
1127 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
1128 printDemodBuff();
1129 }
1130
1131 return 1;
1132 } else {
1133 if (g_debugMode) PrintAndLog("no FSK data found");
1134 }
1135 return 0;
1136 }
1137
1138 //by marshmellow
1139 //fsk raw demod and print binary
1140 //takes 4 arguments - Clock, invert, fchigh, fclow
1141 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1142 int CmdFSKrawdemod(const char *Cmd)
1143 {
1144 char cmdp = param_getchar(Cmd, 0);
1145 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1146 return usage_data_rawdemod_fs();
1147
1148 return FSKrawDemod(Cmd, TRUE);
1149 }
1150
1151 //by marshmellow (based on existing demod + holiman's refactor)
1152 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1153 //print full HID Prox ID and some bit format details if found
1154 int CmdFSKdemodHID(const char *Cmd)
1155 {
1156 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1157 uint32_t hi2=0, hi=0, lo=0;
1158
1159 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1160 size_t BitLen = getFromGraphBuf(BitStream);
1161 if (BitLen==0) return 0;
1162 //get binary from fsk wave
1163 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1164 if (idx<0){
1165 if (g_debugMode){
1166 if (idx==-1){
1167 PrintAndLog("DEBUG: Just Noise Detected");
1168 } else if (idx == -2) {
1169 PrintAndLog("DEBUG: Error demoding fsk");
1170 } else if (idx == -3) {
1171 PrintAndLog("DEBUG: Preamble not found");
1172 } else if (idx == -4) {
1173 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1174 } else {
1175 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1176 }
1177 }
1178 return 0;
1179 }
1180 if (hi2==0 && hi==0 && lo==0) {
1181 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1182 return 0;
1183 }
1184 if (hi2 != 0){ //extra large HID tags
1185 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1186 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1187 }
1188 else { //standard HID tags <38 bits
1189 uint8_t fmtLen = 0;
1190 uint32_t fc = 0;
1191 uint32_t cardnum = 0;
1192 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1193 uint32_t lo2=0;
1194 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1195 uint8_t idx3 = 1;
1196 while(lo2>1){ //find last bit set to 1 (format len bit)
1197 lo2=lo2>>1;
1198 idx3++;
1199 }
1200 fmtLen =idx3+19;
1201 fc =0;
1202 cardnum=0;
1203 if(fmtLen==26){
1204 cardnum = (lo>>1)&0xFFFF;
1205 fc = (lo>>17)&0xFF;
1206 }
1207 if(fmtLen==34){
1208 cardnum = (lo>>1)&0xFFFF;
1209 fc= ((hi&1)<<15)|(lo>>17);
1210 }
1211 if(fmtLen==35){
1212 cardnum = (lo>>1)&0xFFFFF;
1213 fc = ((hi&1)<<11)|(lo>>21);
1214 }
1215 }
1216 else { //if bit 38 is not set then 37 bit format is used
1217 fmtLen = 37;
1218 fc = 0;
1219 cardnum = 0;
1220 if(fmtLen == 37){
1221 cardnum = (lo>>1)&0x7FFFF;
1222 fc = ((hi&0xF)<<12)|(lo>>20);
1223 }
1224 }
1225 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1226 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1227 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1228 }
1229 setDemodBuf(BitStream,BitLen,idx);
1230 if (g_debugMode){
1231 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1232 printDemodBuff();
1233 }
1234 return 1;
1235 }
1236
1237 //by marshmellow
1238 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1239 //print full Paradox Prox ID and some bit format details if found
1240 int CmdFSKdemodParadox(const char *Cmd)
1241 {
1242 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1243 uint32_t hi2=0, hi=0, lo=0;
1244
1245 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1246 size_t BitLen = getFromGraphBuf(BitStream);
1247 if (BitLen==0) return 0;
1248 //get binary from fsk wave
1249 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1250 if (idx<0){
1251 if (g_debugMode){
1252 if (idx==-1){
1253 PrintAndLog("DEBUG: Just Noise Detected");
1254 } else if (idx == -2) {
1255 PrintAndLog("DEBUG: Error demoding fsk");
1256 } else if (idx == -3) {
1257 PrintAndLog("DEBUG: Preamble not found");
1258 } else if (idx == -4) {
1259 PrintAndLog("DEBUG: Error in Manchester data");
1260 } else {
1261 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1262 }
1263 }
1264 return 0;
1265 }
1266 if (hi2==0 && hi==0 && lo==0){
1267 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1268 return 0;
1269 }
1270 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1271 uint32_t cardnum = (lo>>10)&0xFFFF;
1272 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1273 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1274 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1275
1276 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1277 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1278 setDemodBuf(BitStream,BitLen,idx);
1279 if (g_debugMode){
1280 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1281 printDemodBuff();
1282 }
1283 return 1;
1284 }
1285
1286 //by marshmellow
1287 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1288 //print ioprox ID and some format details
1289 int CmdFSKdemodIO(const char *Cmd)
1290 {
1291 int retval = 0;
1292 int idx = 0;
1293 char crcStr[20];
1294 memset(crcStr, 0x00, sizeof(crcStr) );
1295
1296 //something in graphbuffer?
1297 if (GraphTraceLen < 65) {
1298 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1299 return retval;
1300 }
1301 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1302 size_t bitlen = getFromGraphBuf(BitStream);
1303 if (bitlen == 0) return retval;
1304
1305 //get binary from fsk wave
1306 idx = IOdemodFSK(BitStream, bitlen);
1307 if (idx<0){
1308 if (g_debugMode){
1309 if (idx==-1){
1310 PrintAndLog("DEBUG: IO Prox - Just Noise Detected");
1311 } else if (idx == -2) {
1312 PrintAndLog("DEBUG: IO Prox - not enough samples");
1313 } else if (idx == -3) {
1314 PrintAndLog("DEBUG: IO Prox - error during fskdemod");
1315 } else if (idx == -4) {
1316 PrintAndLog("DEBUG: IO Prox - Preamble not found");
1317 } else if (idx == -5) {
1318 PrintAndLog("DEBUG: IO Prox - Separator bits not found");
1319 } else {
1320 PrintAndLog("DEBUG: IO Prox - Error demoding fsk %d", idx);
1321 }
1322 }
1323 return retval;
1324 }
1325 if (idx==0){
1326 if (g_debugMode){
1327 PrintAndLog("DEBUG: IO Prox - Data not found - FSK Bits: %d", bitlen);
1328 if (bitlen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1329 }
1330 return retval;
1331 }
1332 //Index map
1333 //0 10 20 30 40 50 60
1334 //| | | | | | |
1335 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1336 //-----------------------------------------------------------------------------
1337 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1338 //
1339 //XSF(version)facility:codeone+codetwo (raw)
1340 //Handle the data
1341 if (idx + 64 > bitlen) {
1342 if (g_debugMode) PrintAndLog("DEBUG: IO Prox - not enough bits found - bitlen: %d", bitlen);
1343 return retval;
1344 }
1345
1346 if (g_debugMode) {
1347 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]);
1348 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]);
1349 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]);
1350 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]);
1351 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]);
1352 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]);
1353 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]);
1354 }
1355
1356 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1357 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1358 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1359 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1360 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1361 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1362 uint16_t calccrc = 0;
1363
1364 for (uint8_t i = 1; i < 6; ++i){
1365 calccrc += bytebits_to_byte(BitStream + idx + 9 * i ,8);
1366 }
1367 calccrc &= 0xff;
1368 calccrc = 0xff - calccrc;
1369
1370 if (crc == calccrc) {
1371 snprintf(crcStr, 3, "ok");
1372 retval = 1;
1373 } else {
1374 if (g_debugMode) PrintAndLog("DEBUG: IO Prox - crc failed");
1375
1376 snprintf(crcStr, 20, "failed 0x%02X != 0x%02X", crc, calccrc);
1377 retval = 0;
1378 }
1379
1380 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [crc %s]",version,facilitycode,number,code,code2, crcStr);
1381 setDemodBuf(BitStream,64,idx);
1382 if (g_debugMode){
1383 PrintAndLog("DEBUG: IO Prox - idx: %d, Len: %d, Printing demod buffer:", idx, 64);
1384 printDemodBuff();
1385 }
1386 return retval;
1387 }
1388
1389 //by marshmellow
1390 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1391 //print full AWID Prox ID and some bit format details if found
1392 int CmdFSKdemodAWID(const char *Cmd)
1393 {
1394 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1395 size_t size = getFromGraphBuf(BitStream);
1396 if (size==0) return 0;
1397
1398 //get binary from fsk wave
1399 int idx = AWIDdemodFSK(BitStream, &size);
1400 if (idx<=0){
1401 if (g_debugMode){
1402 if (idx == -1)
1403 PrintAndLog("DEBUG: Error - not enough samples");
1404 else if (idx == -2)
1405 PrintAndLog("DEBUG: Error - only noise found");
1406 else if (idx == -3)
1407 PrintAndLog("DEBUG: Error - problem during FSK demod");
1408 else if (idx == -4)
1409 PrintAndLog("DEBUG: Error - AWID preamble not found");
1410 else if (idx == -5)
1411 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1412 else
1413 PrintAndLog("DEBUG: Error %d",idx);
1414 }
1415 return 0;
1416 }
1417
1418 // Index map
1419 // 0 10 20 30 40 50 60
1420 // | | | | | | |
1421 // 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
1422 // -----------------------------------------------------------------------------
1423 // 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
1424 // 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
1425 // |---26 bit---| |-----117----||-------------142-------------|
1426 // b = format bit len, o = odd parity of last 3 bits
1427 // f = facility code, c = card number
1428 // w = wiegand parity
1429 // (26 bit format shown)
1430
1431 //get raw ID before removing parities
1432 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1433 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1434 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1435 setDemodBuf(BitStream,96,idx);
1436
1437 size = removeParity(BitStream, idx+8, 4, 1, 88);
1438 if (size != 66){
1439 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1440 return 0;
1441 }
1442 // ok valid card found!
1443
1444 // Index map
1445 // 0 10 20 30 40 50 60
1446 // | | | | | | |
1447 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1448 // -----------------------------------------------------------------------------
1449 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1450 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1451 // |26 bit| |-117--| |-----142------|
1452 //
1453 // 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000
1454 // bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
1455 // |50 bit| |----4000------| |-----------2248975------------|
1456 // b = format bit len, o = odd parity of last 3 bits
1457 // f = facility code, c = card number
1458 // w = wiegand parity
1459
1460 uint32_t fc = 0;
1461 uint32_t cardnum = 0;
1462 uint32_t code1 = 0;
1463 uint32_t code2 = 0;
1464 uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
1465 switch(fmtLen) {
1466 case 26:
1467 fc = bytebits_to_byte(BitStream + 9, 8);
1468 cardnum = bytebits_to_byte(BitStream + 17, 16);
1469 code1 = bytebits_to_byte(BitStream + 8,fmtLen);
1470 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1471 break;
1472 case 50:
1473 fc = bytebits_to_byte(BitStream + 9, 16);
1474 cardnum = bytebits_to_byte(BitStream + 25, 32);
1475 code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
1476 code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
1477 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1478 break;
1479 default:
1480 if (fmtLen > 32 ) {
1481 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1482 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1483 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1484 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1485 } else {
1486 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1487 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1488 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1489 }
1490 break;
1491 }
1492
1493 if (g_debugMode){
1494 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1495 printDemodBuff();
1496 }
1497 return 1;
1498 }
1499
1500 //by marshmellow
1501 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1502 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1503 int CmdFSKdemodPyramid(const char *Cmd)
1504 {
1505 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1506 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1507 size_t size = getFromGraphBuf(BitStream);
1508 if (size==0) return 0;
1509
1510 //get binary from fsk wave
1511 int idx = PyramiddemodFSK(BitStream, &size);
1512 if (idx < 0){
1513 if (g_debugMode){
1514 if (idx == -5)
1515 PrintAndLog("DEBUG: Error - Pyramid: not enough samples");
1516 else if (idx == -1)
1517 PrintAndLog("DEBUG: Error - Pyramid: only noise found");
1518 else if (idx == -2)
1519 PrintAndLog("DEBUG: Error - Pyramid: problem during FSK demod");
1520 else if (idx == -3)
1521 PrintAndLog("DEBUG: Error - Pyramid: size not correct: %d", size);
1522 else if (idx == -4)
1523 PrintAndLog("DEBUG: Error - Pyramid: preamble not found");
1524 else
1525 PrintAndLog("DEBUG: Error - Pyramid: idx: %d",idx);
1526 }
1527 return 0;
1528 }
1529 // Index map
1530 // 0 10 20 30 40 50 60
1531 // | | | | | | |
1532 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1533 // -----------------------------------------------------------------------------
1534 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1535 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1536
1537 // 64 70 80 90 100 110 120
1538 // | | | | | | |
1539 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1540 // -----------------------------------------------------------------------------
1541 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1542 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1543 // |---115---||---------71---------|
1544 // s = format start bit, o = odd parity of last 7 bits
1545 // f = facility code, c = card number
1546 // w = wiegand parity, x = extra space for other formats
1547 // p = CRC8maxim checksum
1548 // (26 bit format shown)
1549
1550 //get bytes for checksum calc
1551 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1552 uint8_t csBuff[14] = {0x00};
1553 for (uint8_t i = 0; i < 13; i++){
1554 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1555 }
1556 //check checksum calc
1557 //checksum calc thanks to ICEMAN!!
1558 uint32_t checkCS = CRC8Maxim(csBuff, 13);
1559
1560 //get raw ID before removing parities
1561 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96, 32);
1562 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64, 32);
1563 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32, 32);
1564 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx, 32);
1565 setDemodBuf(BitStream, 128, idx);
1566
1567 size = removeParity(BitStream, idx+8, 8, 1, 120);
1568 if (size != 105){
1569 if (g_debugMode) {
1570 if ( size == 0)
1571 PrintAndLog("DEBUG: Error - Pyramid: parity check failed - IDX: %d, hi3: %08X", idx, rawHi3);
1572 else
1573 PrintAndLog("DEBUG: Error - Pyramid: at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %08X", size, idx, rawHi3);
1574 }
1575 return 0;
1576 }
1577
1578 // ok valid card found!
1579
1580 // Index map
1581 // 0 10 20 30 40 50 60 70
1582 // | | | | | | | |
1583 // 01234567890123456789012345678901234567890123456789012345678901234567890
1584 // -----------------------------------------------------------------------
1585 // 00000000000000000000000000000000000000000000000000000000000000000000000
1586 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1587
1588 // 71 80 90 100
1589 // | | | |
1590 // 1 2 34567890 1234567890123456 7 8901234
1591 // ---------------------------------------
1592 // 1 1 01110011 0000000001000110 0 1001010
1593 // s w ffffffff cccccccccccccccc w ppppppp
1594 // |--115-| |------71------|
1595 // s = format start bit, o = odd parity of last 7 bits
1596 // f = facility code, c = card number
1597 // w = wiegand parity, x = extra space for other formats
1598 // p = CRC8-Maxim checksum
1599 // (26 bit format shown)
1600
1601 //find start bit to get fmtLen
1602 int j;
1603 for (j=0; j < size; ++j){
1604 if(BitStream[j]) break;
1605 }
1606
1607 uint8_t fmtLen = size-j-8;
1608 uint32_t fc = 0;
1609 uint32_t cardnum = 0;
1610 uint32_t code1 = 0;
1611
1612 if ( fmtLen == 26 ){
1613 fc = bytebits_to_byte(BitStream+73, 8);
1614 cardnum = bytebits_to_byte(BitStream+81, 16);
1615 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1616 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);
1617 } else if (fmtLen == 45) {
1618 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1619 fc = bytebits_to_byte(BitStream+53, 10);
1620 cardnum = bytebits_to_byte(BitStream+63, 32);
1621 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1622 } else {
1623 cardnum = bytebits_to_byte(BitStream+81, 16);
1624 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1625 }
1626 if (checksum == checkCS)
1627 PrintAndLog("Checksum %02x passed", checksum);
1628 else
1629 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1630
1631 if (g_debugMode){
1632 PrintAndLog("DEBUG: Pyramid: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1633 printDemodBuff();
1634 }
1635 return 1;
1636 }
1637
1638 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1639 // 8 databits + 1 parity (1)
1640 // CIITT 16 chksum
1641 // NATIONAL CODE, ICAR database
1642 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1643 // FLAG (animal/non-animal)
1644 /*
1645 38 IDbits
1646 10 country code
1647 1 extra app bit
1648 14 reserved bits
1649 1 animal bit
1650 16 ccitt CRC chksum over 64bit ID CODE.
1651 24 appli bits.
1652
1653 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1654 */
1655 int CmdFDXBdemodBI(const char *Cmd){
1656
1657 int invert = 1;
1658 int clk = 32;
1659 int errCnt = 0;
1660 int maxErr = 0;
1661 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1662 size_t size = getFromGraphBuf(BitStream);
1663
1664 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1665 if ( errCnt < 0 || errCnt > maxErr ) {
1666 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1667 return 0;
1668 }
1669
1670 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1671 if (errCnt < 0 || errCnt > maxErr ) {
1672 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1673 return 0;
1674 }
1675
1676 int preambleIndex = FDXBdemodBI(BitStream, &size);
1677 if (preambleIndex < 0){
1678 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1679 return 0;
1680 }
1681 if (size != 128) {
1682 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1683 return 0;
1684 }
1685
1686 setDemodBuf(BitStream, 128, preambleIndex);
1687
1688 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1689 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1690 if ( size != 104 ) {
1691 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1692 return 0;
1693 }
1694 if (g_debugMode) {
1695 char *bin = sprint_bin_break(BitStream,size,16);
1696 PrintAndLog("DEBUG BinStream:\n%s",bin);
1697 }
1698 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1699 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1700
1701 //got a good demod
1702 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1703 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1704 uint8_t dataBlockBit = BitStream[48];
1705 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1706 uint8_t animalBit = BitStream[63];
1707 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1708 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1709
1710 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1711 uint8_t raw[8];
1712 num_to_bytes(rawid, 8, raw);
1713
1714 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1715
1716 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1717 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1718 PrintAndLog("National Code: %012llu", NationalCode);
1719 PrintAndLog("CountryCode: %04u", countryCode);
1720 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1721 PrintAndLog("reserved Code: %u", reservedCode);
1722 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1723 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1724 PrintAndLog("Extended: 0x%X\n", extended);
1725 return 1;
1726 }
1727
1728
1729 //by marshmellow
1730 //attempt to psk1 demod graph buffer
1731 int PSKDemod(const char *Cmd, bool verbose)
1732 {
1733 int invert=0;
1734 int clk=0;
1735 int maxErr=100;
1736 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1737 if (clk==1){
1738 invert=1;
1739 clk=0;
1740 }
1741 if (invert != 0 && invert != 1) {
1742 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1743 return 0;
1744 }
1745 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1746 size_t BitLen = getFromGraphBuf(BitStream);
1747 if (BitLen==0) return 0;
1748 uint8_t carrier=countFC(BitStream, BitLen, 0);
1749 if (carrier!=2 && carrier!=4 && carrier!=8){
1750 //invalid carrier
1751 return 0;
1752 }
1753 if (g_debugMode){
1754 PrintAndLog("Carrier: rf/%d",carrier);
1755 }
1756 int errCnt=0;
1757 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1758 if (errCnt > maxErr){
1759 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1760 return 0;
1761 }
1762 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1763 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1764 return 0;
1765 }
1766 if (verbose || g_debugMode){
1767 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1768 if (errCnt>0){
1769 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1770 }
1771 }
1772 //prime demod buffer for output
1773 setDemodBuf(BitStream,BitLen,0);
1774 return 1;
1775 }
1776
1777 // Indala 26 bit decode
1778 // by marshmellow
1779 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1780 int CmdIndalaDecode(const char *Cmd)
1781 {
1782 int ans;
1783 if (strlen(Cmd)>0){
1784 ans = PSKDemod(Cmd, 0);
1785 } else{ //default to RF/32
1786 ans = PSKDemod("32", 0);
1787 }
1788
1789 if (!ans){
1790 if (g_debugMode) PrintAndLog("DEBUG: Indala - Can't demod signal: %d",ans);
1791 return 0;
1792 }
1793
1794 uint8_t invert = 0;
1795 size_t size = DemodBufferLen;
1796 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1797 if (startIdx < 0 || size > 224) {
1798 if (g_debugMode) PrintAndLog("DEBUG: Indala - Wrong size, expected [64|224] got: %d", size);
1799 return -1;
1800 }
1801 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1802 if (invert)
1803 if (g_debugMode) PrintAndLog("DEBUG: Indala - Had to invert bits");
1804
1805 PrintAndLog("BitLen: %d",DemodBufferLen);
1806 //convert UID to HEX
1807 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1808 uid1 = bytebits_to_byte(DemodBuffer,32);
1809 uid2 = bytebits_to_byte(DemodBuffer+32,32);
1810 if (DemodBufferLen==64){
1811 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1812 } else {
1813 uid3 = bytebits_to_byte(DemodBuffer+64,32);
1814 uid4 = bytebits_to_byte(DemodBuffer+96,32);
1815 uid5 = bytebits_to_byte(DemodBuffer+128,32);
1816 uid6 = bytebits_to_byte(DemodBuffer+160,32);
1817 uid7 = bytebits_to_byte(DemodBuffer+192,32);
1818 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1819 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1820 }
1821 if (g_debugMode){
1822 PrintAndLog("DEBUG: Indala - printing demodbuffer:");
1823 printDemodBuff();
1824 }
1825 return 1;
1826 }
1827
1828 int CmdPSKNexWatch(const char *Cmd)
1829 {
1830 if (!PSKDemod("", false)) return 0;
1831
1832 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};
1833 size_t startIdx = 0, size = DemodBufferLen;
1834
1835 // sanity check.
1836 if ( size < sizeof(preamble) + 100) return 0;
1837
1838 bool invert = false;
1839 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1840 // if didn't find preamble try again inverting
1841 if (!PSKDemod("1", false)) return 0;
1842
1843 size = DemodBufferLen;
1844 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1845 invert = true;
1846 }
1847 if (size != 128) return 0;
1848 setDemodBuf(DemodBuffer, size, startIdx+4);
1849 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1850 //get ID
1851 uint32_t ID = 0;
1852 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1853 for (uint8_t idx=0; idx<8; idx++){
1854 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1855 }
1856 }
1857 //parity check (TBD)
1858
1859 //checksum check (TBD)
1860
1861 //output
1862 PrintAndLog("NexWatch ID: %d", ID);
1863 if (invert){
1864 PrintAndLog("Had to Invert - probably NexKey");
1865 for (uint8_t idx=0; idx<size; idx++)
1866 DemodBuffer[idx] ^= 1;
1867 }
1868
1869 CmdPrintDemodBuff("x");
1870 return 1;
1871 }
1872
1873 // by marshmellow
1874 // takes 3 arguments - clock, invert, maxErr as integers
1875 // attempts to demodulate nrz only
1876 // prints binary found and saves in demodbuffer for further commands
1877 int NRZrawDemod(const char *Cmd, bool verbose)
1878 {
1879 int invert=0;
1880 int clk=0;
1881 int maxErr=100;
1882 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1883 if (clk==1){
1884 invert=1;
1885 clk=0;
1886 }
1887 if (invert != 0 && invert != 1) {
1888 PrintAndLog("Invalid argument: %s", Cmd);
1889 return 0;
1890 }
1891 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1892 size_t BitLen = getFromGraphBuf(BitStream);
1893 if (BitLen==0) return 0;
1894 int errCnt=0;
1895 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1896 if (errCnt > maxErr){
1897 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1898 return 0;
1899 }
1900 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1901 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1902 return 0;
1903 }
1904 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1905 //prime demod buffer for output
1906 setDemodBuf(BitStream,BitLen,0);
1907
1908 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1909 if (verbose || g_debugMode) {
1910 PrintAndLog("NRZ demoded bitstream:");
1911 // Now output the bitstream to the scrollback by line of 16 bits
1912 printDemodBuff();
1913 }
1914 return 1;
1915 }
1916
1917 int CmdNRZrawDemod(const char *Cmd)
1918 {
1919 char cmdp = param_getchar(Cmd, 0);
1920 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1921 return usage_data_rawdemod_nr();
1922
1923 return NRZrawDemod(Cmd, TRUE);
1924 }
1925
1926 // by marshmellow
1927 // takes 3 arguments - clock, invert, maxErr as integers
1928 // attempts to demodulate psk only
1929 // prints binary found and saves in demodbuffer for further commands
1930 int CmdPSK1rawDemod(const char *Cmd)
1931 {
1932 int ans;
1933 char cmdp = param_getchar(Cmd, 0);
1934 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1935 return usage_data_rawdemod_p1();
1936
1937 ans = PSKDemod(Cmd, TRUE);
1938 //output
1939 if (!ans){
1940 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1941 return 0;
1942 }
1943 PrintAndLog("PSK1 demoded bitstream:");
1944 // Now output the bitstream to the scrollback by line of 16 bits
1945 printDemodBuff();
1946 return 1;
1947 }
1948
1949 // by marshmellow
1950 // takes same args as cmdpsk1rawdemod
1951 int CmdPSK2rawDemod(const char *Cmd)
1952 {
1953 int ans = 0;
1954 char cmdp = param_getchar(Cmd, 0);
1955 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1956 return usage_data_rawdemod_p2();
1957
1958 ans = PSKDemod(Cmd, TRUE);
1959 if (!ans){
1960 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1961 return 0;
1962 }
1963 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1964 PrintAndLog("PSK2 demoded bitstream:");
1965 // Now output the bitstream to the scrollback by line of 16 bits
1966 printDemodBuff();
1967 return 1;
1968 }
1969
1970 // by marshmellow - combines all raw demod functions into one menu command
1971 int CmdRawDemod(const char *Cmd)
1972 {
1973 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1974 char cmdp2 = Cmd[1];
1975 int ans = 0;
1976
1977 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd) < 2)
1978 return usage_data_rawdemod();
1979
1980 if (cmdp == 'f' && cmdp2 == 's')
1981 ans = CmdFSKrawdemod(Cmd+2);
1982 else if(cmdp == 'a' && cmdp2 == 'b')
1983 ans = Cmdaskbiphdemod(Cmd+2);
1984 else if(cmdp == 'a' && cmdp2 == 'm')
1985 ans = Cmdaskmandemod(Cmd+2);
1986 else if(cmdp == 'a' && cmdp2 == 'r')
1987 ans = Cmdaskrawdemod(Cmd+2);
1988 else if(cmdp == 'n' && cmdp2 == 'r')
1989 ans = CmdNRZrawDemod(Cmd+2);
1990 else if(cmdp == 'p' && cmdp2 == '1')
1991 ans = CmdPSK1rawDemod(Cmd+2);
1992 else if(cmdp == 'p' && cmdp2 == '2')
1993 ans = CmdPSK2rawDemod(Cmd+2);
1994 else
1995 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1996
1997 return ans;
1998 }
1999 //iceman: diff sizes on the plotwindow?
2000 int CmdGrid(const char *Cmd)
2001 {
2002 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
2003 PlotGridXdefault = PlotGridX;
2004 PlotGridYdefault = PlotGridY;
2005 RepaintGraphWindow();
2006 return 0;
2007 }
2008
2009 int CmdHexsamples(const char *Cmd)
2010 {
2011 int i, j;
2012 int requested = 0;
2013 int offset = 0;
2014 char string_buf[25];
2015 char* string_ptr = string_buf;
2016 uint8_t got[BIGBUF_SIZE];
2017
2018 sscanf(Cmd, "%i %i", &requested, &offset);
2019
2020 /* if no args send something */
2021 if (requested == 0) {
2022 requested = 8;
2023 }
2024 if (offset + requested > sizeof(got)) {
2025 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
2026 return 0;
2027 }
2028
2029 GetFromBigBuf(got,requested,offset);
2030 WaitForResponse(CMD_ACK,NULL);
2031
2032 i = 0;
2033 for (j = 0; j < requested; j++) {
2034 i++;
2035 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
2036 if (i == 8) {
2037 *(string_ptr - 1) = '\0'; // remove the trailing space
2038 PrintAndLog("%s", string_buf);
2039 string_buf[0] = '\0';
2040 string_ptr = string_buf;
2041 i = 0;
2042 }
2043 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
2044 *(string_ptr - 1) = '\0';
2045 PrintAndLog("%s", string_buf);
2046 string_buf[0] = '\0';
2047 }
2048 }
2049 return 0;
2050 }
2051
2052 int CmdHide(const char *Cmd)
2053 {
2054 HideGraphWindow();
2055 return 0;
2056 }
2057
2058 //zero mean GraphBuffer
2059 int CmdHpf(const char *Cmd)
2060 {
2061 int i;
2062 int accum = 0;
2063
2064 for (i = 10; i < GraphTraceLen; ++i)
2065 accum += GraphBuffer[i];
2066
2067 accum /= (GraphTraceLen - 10);
2068
2069 for (i = 0; i < GraphTraceLen; ++i)
2070 GraphBuffer[i] -= accum;
2071
2072 RepaintGraphWindow();
2073 return 0;
2074 }
2075
2076 bool _headBit( BitstreamOut *stream)
2077 {
2078 int bytepos = stream->position >> 3; // divide by 8
2079 int bitpos = (stream->position++) & 7; // mask out 00000111
2080 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
2081 }
2082
2083 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
2084 {
2085 int i;
2086 uint8_t val = 0;
2087 for(i = 0 ; i < bits_per_sample; i++)
2088 val |= (_headBit(b) << (7-i));
2089
2090 return val;
2091 }
2092
2093 int getSamples(const char *Cmd, bool silent)
2094 {
2095 //If we get all but the last byte in bigbuf,
2096 // we don't have to worry about remaining trash
2097 // in the last byte in case the bits-per-sample
2098 // does not line up on byte boundaries
2099
2100 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2101
2102 int n = strtol(Cmd, NULL, 0);
2103
2104 if ( n == 0 || n > sizeof(got))
2105 n = sizeof(got);
2106
2107 if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n);
2108 GetFromBigBuf(got,n,0);
2109 if (!silent) PrintAndLog("Data fetched");
2110 UsbCommand response;
2111 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2112 PrintAndLog("timeout while waiting for reply.");
2113 return 1;
2114 }
2115
2116 uint8_t bits_per_sample = 8;
2117
2118 //Old devices without this feature would send 0 at arg[0]
2119 if (response.arg[0] > 0) {
2120 sample_config *sc = (sample_config *) response.d.asBytes;
2121 if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2122 bits_per_sample = sc->bits_per_sample;
2123 }
2124
2125 if (bits_per_sample < 8) {
2126 if (!silent) PrintAndLog("Unpacking...");
2127 BitstreamOut bout = { got, bits_per_sample * n, 0};
2128 int j =0;
2129 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2130 uint8_t sample = getByte(bits_per_sample, &bout);
2131 GraphBuffer[j] = ((int) sample )- 128;
2132 }
2133 GraphTraceLen = j;
2134 if (!silent) PrintAndLog("Unpacked %d samples" , j );
2135 } else {
2136 for (int j = 0; j < n; j++) {
2137 GraphBuffer[j] = ((int)got[j]) - 128;
2138 }
2139 GraphTraceLen = n;
2140 }
2141
2142 RepaintGraphWindow();
2143 return 0;
2144 }
2145
2146 int CmdSamples(const char *Cmd)
2147 {
2148 return getSamples(Cmd, false);
2149 }
2150
2151 int CmdTuneSamples(const char *Cmd)
2152 {
2153 int timeout = 0;
2154 printf("\nMeasuring antenna characteristics, please wait...");
2155
2156 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2157 clearCommandBuffer();
2158 SendCommand(&c);
2159 UsbCommand resp;
2160 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2161 timeout++;
2162 printf(".");
2163 if (timeout > 7) {
2164 PrintAndLog("\nNo response from Proxmark. Aborting...");
2165 return 1;
2166 }
2167 }
2168
2169 int peakv, peakf;
2170 int vLf125, vLf134, vHf;
2171 vLf125 = resp.arg[0] & 0xffff;
2172 vLf134 = resp.arg[0] >> 16;
2173 vHf = resp.arg[1] & 0xffff;;
2174 peakf = resp.arg[2] & 0xffff;
2175 peakv = resp.arg[2] >> 16;
2176 PrintAndLog("");
2177 if ( vLf125 > 0 )
2178 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2179 if ( vLf134 > 0 )
2180 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2181 if ( peakv > 0 && peakf > 0 )
2182 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2183 if ( vHf > 0 )
2184 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2185
2186 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2187 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2188 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2189 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2190
2191 if (peakv < LF_UNUSABLE_V)
2192 PrintAndLog("# Your LF antenna is unusable.");
2193 else if (peakv < LF_MARGINAL_V)
2194 PrintAndLog("# Your LF antenna is marginal.");
2195 if (vHf < HF_UNUSABLE_V)
2196 PrintAndLog("# Your HF antenna is unusable.");
2197 else if (vHf < HF_MARGINAL_V)
2198 PrintAndLog("# Your HF antenna is marginal.");
2199
2200 if (peakv >= LF_UNUSABLE_V) {
2201 for (int i = 0; i < 256; i++) {
2202 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2203 }
2204 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2205 PrintAndLog("\n");
2206 GraphTraceLen = 256;
2207 ShowGraphWindow();
2208 RepaintGraphWindow();
2209 }
2210 return 0;
2211 }
2212
2213 int CmdLoad(const char *Cmd)
2214 {
2215 char filename[FILE_PATH_SIZE] = {0x00};
2216 int len = 0;
2217
2218 len = strlen(Cmd);
2219 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2220 memcpy(filename, Cmd, len);
2221
2222 FILE *f = fopen(filename, "r");
2223 if (!f) {
2224 PrintAndLog("couldn't open '%s'", filename);
2225 return 0;
2226 }
2227
2228 GraphTraceLen = 0;
2229 char line[80];
2230 while (fgets(line, sizeof (line), f)) {
2231 GraphBuffer[GraphTraceLen] = atoi(line);
2232 GraphTraceLen++;
2233 }
2234 if (f) {
2235 fclose(f);
2236 f = NULL;
2237 }
2238 PrintAndLog("loaded %d samples", GraphTraceLen);
2239 RepaintGraphWindow();
2240 return 0;
2241 }
2242
2243 int CmdLtrim(const char *Cmd)
2244 {
2245 int ds = atoi(Cmd);
2246
2247 if (GraphTraceLen <= 0) return 0;
2248
2249 for (int i = ds; i < GraphTraceLen; ++i)
2250 GraphBuffer[i-ds] = GraphBuffer[i];
2251
2252 GraphTraceLen -= ds;
2253 RepaintGraphWindow();
2254 return 0;
2255 }
2256
2257 // trim graph to input argument length
2258 int CmdRtrim(const char *Cmd)
2259 {
2260 int ds = atoi(Cmd);
2261 GraphTraceLen = ds;
2262 RepaintGraphWindow();
2263 return 0;
2264 }
2265
2266 int CmdNorm(const char *Cmd)
2267 {
2268 int i;
2269 int max = INT_MIN, min = INT_MAX;
2270
2271 for (i = 10; i < GraphTraceLen; ++i) {
2272 if (GraphBuffer[i] > max) max = GraphBuffer[i];
2273 if (GraphBuffer[i] < min) min = GraphBuffer[i];
2274 }
2275
2276 if (max != min) {
2277 for (i = 0; i < GraphTraceLen; ++i) {
2278 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / (max - min);
2279 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2280 }
2281 }
2282 RepaintGraphWindow();
2283 return 0;
2284 }
2285
2286 int CmdPlot(const char *Cmd)
2287 {
2288 ShowGraphWindow();
2289 return 0;
2290 }
2291
2292 int CmdSave(const char *Cmd)
2293 {
2294 char filename[FILE_PATH_SIZE] = {0x00};
2295 int len = 0;
2296
2297 len = strlen(Cmd);
2298 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2299 memcpy(filename, Cmd, len);
2300
2301
2302 FILE *f = fopen(filename, "w");
2303 if(!f) {
2304 PrintAndLog("couldn't open '%s'", filename);
2305 return 0;
2306 }
2307 int i;
2308 for (i = 0; i < GraphTraceLen; i++) {
2309 fprintf(f, "%d\n", GraphBuffer[i]);
2310 }
2311 if (f) {
2312 fclose(f);
2313 f = NULL;
2314 }
2315 PrintAndLog("saved to '%s'", Cmd);
2316 return 0;
2317 }
2318
2319 int CmdScale(const char *Cmd)
2320 {
2321 CursorScaleFactor = atoi(Cmd);
2322 if (CursorScaleFactor == 0) {
2323 PrintAndLog("bad, can't have zero scale");
2324 CursorScaleFactor = 1;
2325 }
2326 RepaintGraphWindow();
2327 return 0;
2328 }
2329
2330 int CmdDirectionalThreshold(const char *Cmd)
2331 {
2332 int8_t upThres = param_get8(Cmd, 0);
2333 int8_t downThres = param_get8(Cmd, 1);
2334
2335 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2336
2337 int lastValue = GraphBuffer[0];
2338 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2339
2340 for (int i = 1; i < GraphTraceLen; ++i) {
2341 // Apply first threshold to samples heading up
2342 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2343 {
2344 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2345 GraphBuffer[i] = 1;
2346 }
2347 // Apply second threshold to samples heading down
2348 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2349 {
2350 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2351 GraphBuffer[i] = -1;
2352 }
2353 else
2354 {
2355 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2356 GraphBuffer[i] = GraphBuffer[i-1];
2357 }
2358 }
2359 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2360 RepaintGraphWindow();
2361 return 0;
2362 }
2363
2364 int CmdZerocrossings(const char *Cmd)
2365 {
2366 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2367 CmdHpf("");
2368
2369 int sign = 1;
2370 int zc = 0;
2371 int lastZc = 0;
2372
2373 for (int i = 0; i < GraphTraceLen; ++i) {
2374 if (GraphBuffer[i] * sign >= 0) {
2375 // No change in sign, reproduce the previous sample count.
2376 zc++;
2377 GraphBuffer[i] = lastZc;
2378 } else {
2379 // Change in sign, reset the sample count.
2380 sign = -sign;
2381 GraphBuffer[i] = lastZc;
2382 if (sign > 0) {
2383 lastZc = zc;
2384 zc = 0;
2385 }
2386 }
2387 }
2388
2389 RepaintGraphWindow();
2390 return 0;
2391 }
2392
2393 /**
2394 * @brief Utility for conversion via cmdline.
2395 * @param Cmd
2396 * @return
2397 */
2398 int Cmdbin2hex(const char *Cmd)
2399 {
2400 int bg =0, en =0;
2401 if(param_getptr(Cmd, &bg, &en, 0))
2402 return usage_data_bin2hex();
2403
2404 //Number of digits supplied as argument
2405 size_t length = en - bg +1;
2406 size_t bytelen = (length+7) / 8;
2407 uint8_t* arr = (uint8_t *) malloc(bytelen);
2408 memset(arr, 0, bytelen);
2409 BitstreamOut bout = { arr, 0, 0 };
2410
2411 for (; bg <= en ;bg++) {
2412 char c = Cmd[bg];
2413 if( c == '1') pushBit(&bout, 1);
2414 else if( c == '0') pushBit(&bout, 0);
2415 else PrintAndLog("Ignoring '%c'", c);
2416 }
2417
2418 if (bout.numbits % 8 != 0)
2419 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2420
2421 //Uses printf instead of PrintAndLog since the latter
2422 // adds linebreaks to each printout - this way was more convenient since we don't have to
2423 // allocate a string and write to that first...
2424 for(size_t x = 0; x < bytelen ; x++)
2425 printf("%02X", arr[x]);
2426
2427 printf("\n");
2428 free(arr);
2429 return 0;
2430 }
2431
2432 int Cmdhex2bin(const char *Cmd)
2433 {
2434 int bg =0, en =0;
2435 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2436
2437 while (bg <= en ) {
2438 char x = Cmd[bg++];
2439 // capitalize
2440 if (x >= 'a' && x <= 'f')
2441 x -= 32;
2442 // convert to numeric value
2443 if (x >= '0' && x <= '9')
2444 x -= '0';
2445 else if (x >= 'A' && x <= 'F')
2446 x -= 'A' - 10;
2447 else
2448 continue;
2449
2450 //Uses printf instead of PrintAndLog since the latter
2451 // adds linebreaks to each printout - this way was more convenient since we don't have to
2452 // allocate a string and write to that first...
2453
2454 for(int i= 0 ; i < 4 ; ++i)
2455 printf("%d",(x >> (3 - i)) & 1);
2456 }
2457 printf("\n");
2458
2459 return 0;
2460 }
2461
2462 int CmdDataIIR(const char *Cmd){
2463
2464 uint8_t k = param_get8(Cmd,0);
2465 //iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
2466 iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
2467 RepaintGraphWindow();
2468 return 0;
2469 }
2470
2471 static command_t CommandTable[] =
2472 {
2473 {"help", CmdHelp, 1, "This help"},
2474 {"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)"},
2475 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2476 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2477 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2478 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2479 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2480 {"bin2hex", Cmdbin2hex, 1, "<digits> -- Converts binary to hexadecimal"},
2481 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2482 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2483 {"dec", CmdDec, 1, "Decimate samples"},
2484 {"detectclock", CmdDetectClockRate, 1, "[<a|f|n|p>] Detect ASK, FSK, NRZ, PSK clock rate of wave in GraphBuffer"},
2485 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2486 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2487 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2488 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2489 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2490 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2491 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2492 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2493 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2494 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2495 {"hex2bin", Cmdhex2bin, 1, "<hexadecimal> -- Converts hexadecimal to binary"},
2496 {"hide", CmdHide, 1, "Hide graph window"},
2497 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2498 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2499 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2500 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2501 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2502 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2503 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2504 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2505 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2506 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2507 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2508 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2509 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2510 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2511 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2512 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2513 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2514 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2515 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2516 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2517 {"iir", CmdDataIIR, 0, "apply IIR buttersworth filter on plotdata"},
2518 {NULL, NULL, 0, NULL}
2519 };
2520
2521 int CmdData(const char *Cmd){
2522 clearCommandBuffer();
2523 CmdsParse(CommandTable, Cmd);
2524 return 0;
2525 }
2526
2527 int CmdHelp(const char *Cmd)
2528 {
2529 CmdsHelp(CommandTable);
2530 return 0;
2531 }
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