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c48211f7 | 1 | //----------------------------------------------------------------------------- |
2 | // | |
3 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
4 | // at your option, any later version. See the LICENSE.txt file for the text of | |
5 | // the license. | |
6 | //----------------------------------------------------------------------------- | |
7 | // Low frequency Presco tag commands | |
8 | //----------------------------------------------------------------------------- | |
9 | ||
10 | #include "cmdlffdx.h" | |
11 | ||
12 | /* | |
13 | FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) | |
14 | 8 databits + 1 parity (1) | |
15 | CIITT 16 checksum | |
16 | NATIONAL CODE, ICAR database | |
17 | COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf | |
18 | FLAG (animal/non-animal) | |
19 | ||
20 | 38 IDbits | |
21 | 10 country code | |
22 | 1 extra app bit | |
23 | 14 reserved bits | |
24 | 1 animal bit | |
25 | 16 ccitt CRC chksum over 64bit ID CODE. | |
26 | 24 appli bits. | |
27 | ||
28 | sample: 985121004515220 [ 37FF65B88EF94 ] | |
29 | */ | |
30 | ||
31 | static int CmdHelp(const char *Cmd); | |
32 | ||
33 | int usage_lf_fdx_clone(void){ | |
34 | PrintAndLog("clone a FDX-B Animal tag to a T55x7 tag."); | |
35 | PrintAndLog("Usage: lf fdx clone [h] <country id> <animal id> <Q5>"); | |
36 | PrintAndLog("Options:"); | |
37 | PrintAndLog(" h : This help"); | |
38 | PrintAndLog(" <country id> : Country id"); | |
39 | PrintAndLog(" <animal id> : Animal id"); | |
40 | // has extended data? | |
41 | //reserved/rfu | |
42 | //is animal tag | |
43 | // extended data | |
44 | PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)"); | |
45 | PrintAndLog(""); | |
46 | PrintAndLog("Sample: lf fdx clone 999 112233"); | |
47 | return 0; | |
48 | } | |
49 | ||
50 | int usage_lf_fdx_sim(void) { | |
51 | PrintAndLog("Enables simulation of FDX-B Animal tag"); | |
52 | PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); | |
53 | PrintAndLog(""); | |
54 | PrintAndLog("Usage: lf fdx sim [h] <country id> <animal id>"); | |
55 | PrintAndLog("Options:"); | |
56 | PrintAndLog(" h : This help"); | |
57 | PrintAndLog(" <country id> : Country id"); | |
58 | PrintAndLog(" <animal id> : Animal id"); | |
59 | PrintAndLog(""); | |
60 | PrintAndLog("Sample: lf fdx sim 999 112233"); | |
61 | return 0; | |
62 | } | |
63 | // clearing the topbit needed for the preambl detection. | |
64 | static void verify_values(uint32_t countryid, uint64_t animalid){ | |
65 | if ((animalid & 0x3FFFFFFFFF) != animalid) { | |
66 | animalid &= 0x3FFFFFFFFF; | |
67 | PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid); | |
68 | } | |
69 | if ( (countryid & 0x3ff) != countryid ) { | |
70 | countryid &= 0x3ff; | |
71 | PrintAndLog("Country ID Truncated to 10bits: %03d", countryid); | |
72 | } | |
73 | } | |
74 | ||
c48211f7 | 75 | int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) { |
c48211f7 | 76 | |
c48211f7 | 77 | // add preamble ten 0x00 and one 0x01 |
78 | memset(bits, 0x00, 10); | |
79 | bits[10] = 1; | |
e585a58e | 80 | |
c48211f7 | 81 | // 128bits |
82 | // every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite | |
83 | memset(bits, 0x01, 128); | |
84 | ||
85 | // add preamble ten 0x00 and one 0x01 | |
86 | memset(bits, 0x00, 10); | |
87 | ||
88 | // add reserved | |
89 | num_to_bytebitsLSBF(0x00, 7, bits + 66); | |
90 | num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74); | |
91 | ||
92 | // add animal flag - OK | |
93 | bits[65] = isanimal; | |
94 | ||
95 | // add extended flag - OK | |
96 | bits[81] = isextended; | |
97 | ||
98 | // add national code 40bits - OK | |
99 | num_to_bytebitsLSBF(national_id >> 0, 8, bits+11); | |
100 | num_to_bytebitsLSBF(national_id >> 8, 8, bits+20); | |
101 | num_to_bytebitsLSBF(national_id >> 16, 8, bits+29); | |
102 | num_to_bytebitsLSBF(national_id >> 24, 8, bits+38); | |
103 | num_to_bytebitsLSBF(national_id >> 32, 6, bits+47); | |
104 | ||
105 | // add country code - OK | |
106 | num_to_bytebitsLSBF(country >> 0, 2, bits+53); | |
107 | num_to_bytebitsLSBF(country >> 2, 8, bits+56); | |
108 | ||
109 | // add crc-16 - OK | |
110 | uint8_t raw[8]; | |
111 | for (uint8_t i=0; i<8; ++i) | |
112 | raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8); | |
113 | ||
38a30dbf | 114 | uint16_t crc = crc16_ccitt_kermit(raw, 8); |
c48211f7 | 115 | num_to_bytebitsLSBF(crc >> 0, 8, bits+83); |
116 | num_to_bytebitsLSBF(crc >> 8, 8, bits+92); | |
117 | ||
118 | // extended data - OK | |
119 | num_to_bytebitsLSBF( extended >> 0 , 8, bits+101); | |
120 | num_to_bytebitsLSBF( extended >> 8 , 8, bits+110); | |
121 | num_to_bytebitsLSBF( extended >> 16, 8, bits+119); | |
c48211f7 | 122 | return 1; |
123 | } | |
124 | ||
125 | //see ASKDemod for what args are accepted | |
126 | //almost the same demod as cmddata.c/CmdFDXBdemodBI | |
127 | int CmdFdxDemod(const char *Cmd) { | |
128 | ||
129 | //Differential Biphase / di-phase (inverted biphase) | |
130 | //get binary from ask wave | |
131 | if (!ASKbiphaseDemod("0 32 1 0", FALSE)) { | |
132 | if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed"); | |
133 | return 0; | |
134 | } | |
135 | size_t size = DemodBufferLen; | |
136 | int ans = FDXBdemodBI(DemodBuffer, &size); | |
137 | if (ans < 0){ | |
138 | if (g_debugMode){ | |
139 | if (ans == -1) | |
140 | PrintAndLog("DEBUG: Error - FDX-B too few bits found"); | |
141 | else if (ans == -2) | |
142 | PrintAndLog("DEBUG: Error - FDX-B preamble not found"); | |
143 | else if (ans == -3) | |
144 | PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size); | |
145 | else | |
146 | PrintAndLog("DEBUG: Error - FDX-B ans: %d", ans); | |
147 | } | |
148 | return 0; | |
149 | } | |
150 | ||
151 | setDemodBuf(DemodBuffer, 128, ans); | |
152 | // remove marker bits (1's every 9th digit after preamble) (pType = 2) | |
153 | size = removeParity(DemodBuffer, 11, 9, 2, 117); | |
154 | if ( size != 104 ) { | |
155 | if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B error removeParity: %d", size); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | //got a good demod | |
160 | uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(DemodBuffer+32,6)) << 32) | bytebits_to_byteLSBF(DemodBuffer,32); | |
161 | uint16_t countryCode = bytebits_to_byteLSBF(DemodBuffer+38,10); | |
162 | uint8_t dataBlockBit = DemodBuffer[48]; | |
163 | uint32_t reservedCode = bytebits_to_byteLSBF(DemodBuffer+49,14); | |
164 | uint8_t animalBit = DemodBuffer[63]; | |
165 | uint32_t crc16 = bytebits_to_byteLSBF(DemodBuffer+64,16); | |
166 | uint32_t extended = bytebits_to_byteLSBF(DemodBuffer+80,24); | |
167 | uint64_t rawid = ((uint64_t) | |
168 | //bytebits_to_byte(DemodBuffer, 8) << 96) | | |
169 | //bytebits_to_byte(DemodBuffer,32) << 64) | | |
170 | bytebits_to_byte(DemodBuffer,32) << 32) | | |
171 | bytebits_to_byte(DemodBuffer+32, 32); | |
172 | uint8_t raw[8]; | |
173 | num_to_bytes(rawid, 8, raw); | |
174 | ||
175 | uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); | |
176 | ||
177 | PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found: Raw : %s", sprint_hex(raw, 8)); | |
178 | PrintAndLog("Animal ID %04u-%012llu", countryCode, NationalCode); | |
179 | PrintAndLog("National Code %012llu (0x%llX)", NationalCode, NationalCode); | |
180 | PrintAndLog("Country Code %04u", countryCode); | |
181 | PrintAndLog("Reserved/RFU %u (0x04%X)", reservedCode, reservedCode); | |
182 | PrintAndLog(""); | |
183 | PrintAndLog("Animal Tag %s", animalBit ? "True" : "False"); | |
184 | PrintAndLog("Has extended data %s [0x%X]", dataBlockBit ? "True" : "False", extended); | |
185 | PrintAndLog("CRC-16 0x%04X - 0x%04X [%s]", crc16, calcCrc, (calcCrc == crc16) ? "Ok" : "Failed"); | |
186 | ||
187 | if (g_debugMode) { | |
188 | PrintAndLog("Start marker %d; Size %d", ans, size); | |
189 | char *bin = sprint_bin_break(DemodBuffer, size, 16); | |
190 | PrintAndLog("DEBUG bin stream:\n%s", bin); | |
191 | } | |
192 | return 1; | |
193 | } | |
194 | ||
195 | int CmdFdxRead(const char *Cmd) { | |
196 | CmdLFRead("s"); | |
197 | getSamples("12000", TRUE); | |
198 | return CmdFdxDemod(Cmd); | |
199 | } | |
200 | ||
201 | int CmdFdxClone(const char *Cmd) { | |
202 | ||
203 | uint32_t countryid = 0; | |
204 | uint64_t animalid = 0; | |
205 | uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0}; | |
206 | uint8_t bits[128]; | |
207 | uint8_t *bs = bits; | |
208 | memset(bs, 0, sizeof(bits)); | |
209 | ||
210 | char cmdp = param_getchar(Cmd, 0); | |
211 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone(); | |
212 | ||
213 | countryid = param_get32ex(Cmd, 0, 0, 10); | |
214 | animalid = param_get64ex(Cmd, 1, 0, 10); | |
215 | ||
216 | //Q5 | |
217 | if (param_getchar(Cmd, 1) == 'Q' || param_getchar(Cmd, 1) == 'q') { | |
218 | //t5555 (Q5) BITRATE = (RF-2)/2 (iceman) | |
219 | blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | 32<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT; | |
220 | } | |
221 | ||
222 | verify_values(countryid, animalid); | |
223 | ||
224 | // getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) | |
225 | if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) { | |
226 | PrintAndLog("Error with tag bitstream generation."); | |
227 | return 1; | |
228 | } | |
229 | ||
230 | // convert from bit stream to block data | |
231 | blocks[1] = bytebits_to_byte(bs,32); | |
232 | blocks[2] = bytebits_to_byte(bs+32,32); | |
233 | blocks[3] = bytebits_to_byte(bs+64,32); | |
234 | blocks[4] = bytebits_to_byte(bs+96,32); | |
235 | ||
236 | PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid); | |
237 | PrintAndLog("Blk | Data "); | |
238 | PrintAndLog("----+------------"); | |
239 | PrintAndLog(" 00 | 0x%08x", blocks[0]); | |
240 | PrintAndLog(" 01 | 0x%08x", blocks[1]); | |
241 | PrintAndLog(" 02 | 0x%08x", blocks[2]); | |
242 | PrintAndLog(" 03 | 0x%08x", blocks[3]); | |
243 | PrintAndLog(" 04 | 0x%08x", blocks[4]); | |
244 | ||
245 | UsbCommand resp; | |
246 | UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; | |
247 | ||
248 | for (int i = 4; i >= 0; --i) { | |
249 | c.arg[0] = blocks[i]; | |
250 | c.arg[1] = i; | |
251 | clearCommandBuffer(); | |
252 | SendCommand(&c); | |
253 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){ | |
254 | PrintAndLog("Error occurred, device did not respond during write operation."); | |
255 | return -1; | |
256 | } | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
261 | int CmdFdxSim(const char *Cmd) { | |
262 | uint32_t countryid = 0; | |
263 | uint64_t animalid = 0; | |
264 | ||
265 | char cmdp = param_getchar(Cmd, 0); | |
266 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim(); | |
267 | ||
268 | countryid = param_get32ex(Cmd, 0, 0, 10); | |
269 | animalid = param_get64ex(Cmd, 1, 0, 10); | |
270 | ||
271 | verify_values(countryid, animalid); | |
272 | ||
273 | uint8_t clk = 32, encoding = 2, separator = 0, invert = 1; | |
274 | uint16_t arg1, arg2; | |
275 | size_t size = 128; | |
276 | arg1 = clk << 8 | encoding; | |
277 | arg2 = invert << 8 | separator; | |
278 | ||
279 | PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid); | |
280 | ||
281 | UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}}; | |
282 | ||
283 | //getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) | |
284 | getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes); | |
285 | clearCommandBuffer(); | |
286 | SendCommand(&c); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | static command_t CommandTable[] = { | |
291 | {"help", CmdHelp, 1, "This help"}, | |
292 | {"demod", CmdFdxDemod,1, "Attempt extract tag data from graphbuf"}, | |
293 | {"read", CmdFdxRead, 0, "Attempt to read and extract tag data"}, | |
08439eea | 294 | {"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7"}, |
295 | {"sim", CmdFdxSim, 0, "Animal ID tag simulator"}, | |
c48211f7 | 296 | {NULL, NULL, 0, NULL} |
297 | }; | |
298 | ||
299 | int CmdLFFdx(const char *Cmd) { | |
300 | clearCommandBuffer(); | |
301 | CmdsParse(CommandTable, Cmd); | |
302 | return 0; | |
303 | } | |
304 | ||
305 | int CmdHelp(const char *Cmd) { | |
306 | CmdsHelp(CommandTable); | |
307 | return 0; | |
308 | } |