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FIX: calcs wiegand correct, adds wiegand parity correct, adds checksum correct...
[proxmark3-svn] / client / cmdlfpyramid.c
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 Farpoint / Pyramid tag commands
8 //-----------------------------------------------------------------------------
9 #include <string.h>
10 #include <inttypes.h>
11 #include "cmdlfpyramid.h"
12 static int CmdHelp(const char *Cmd);
13
14 int usage_lf_pyramid_clone(void){
15 PrintAndLog("clone a Farepointe/Pyramid tag to a T55x7 tag.");
16 PrintAndLog("Per pyramid format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
17 PrintAndLog("");
18 PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
19 PrintAndLog("Options :");
20 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
21 PrintAndLog(" <Card Number> : 16-bit value card number");
22 PrintAndLog("");
23 PrintAndLog("Sample : lf pyramid clone 123 11223");
24 return 0;
25 }
26
27 int usage_lf_pyramid_sim(void) {
28 PrintAndLog("Enables simulation of Farepointe/Pyramid card with specified card number.");
29 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
30 PrintAndLog("Per pyramid format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
31 PrintAndLog("");
32 PrintAndLog("Usage: lf pyramid sim <Card-Number>");
33 PrintAndLog("Options :");
34 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
35 PrintAndLog(" <Card Number> : 16-bit value card number");
36 PrintAndLog("");
37 PrintAndLog("Sample : lf pyramid sim 123 11223");
38 return 0;
39 }
40
41 // calc checksum
42 int GetWiegandFromPyramid(const char *id, uint32_t *fc, uint32_t *cn) {
43 return 0;
44 }
45
46 int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {
47
48 uint8_t pre[128];
49 memset(pre, 0x00, sizeof(pre));
50
51 // format start bit
52
53 // Get 26 wiegand from FacilityCode, CardNumber
54 uint8_t wiegand[26];
55 num_to_bytebits(fc, 8, wiegand);
56 num_to_bytebits(cn, 16, wiegand+8);
57
58 // add wiegand parity bits (dest, source, len)
59 wiegand_add_parity(pre+71, wiegand, 26);
60
61 // add paritybits (bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
62 addParity(pre+8, pyramidBits+8, 112, 8, 1);
63
64 // add checksum
65 uint8_t csBuff[13];
66 for (uint8_t i = 0; i < 13; i++)
67 csBuff[i] = bytebits_to_byte(pyramidBits + 16 + (i*8), 8);
68
69 uint32_t crc = CRC8Maxim(csBuff, 13);
70 num_to_bytebits(crc, 8, pyramidBits+120);
71 return 1;
72 }
73 /*
74 9 - 00001001
75 33278 - 1000000111111110
76 10000100110000001
77 000101010101010101010101082602
78
79 */
80 int CmdPyramidRead(const char *Cmd) {
81 // read lf silently
82 CmdLFRead("s");
83 // get samples silently
84 getSamples("30000",false);
85 // demod and output Pyramid ID
86 return CmdFSKdemodPyramid("");
87 }
88
89 int CmdPyramidClone(const char *Cmd) {
90
91 char cmdp = param_getchar(Cmd, 0);
92 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_pyramid_clone();
93
94 uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0;
95
96 uint8_t bits[128];
97 uint8_t *bs = bits;
98 memset(bs, 0x00, sizeof(bits));
99
100 //Pyramid - compat mode, FSK2a, data rate 50, 4 data blocks
101 uint32_t blocks[5] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 4<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
102
103 // if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
104 // blocks[0] = T5555_MODULATION_FSK2 | 50<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;
105
106 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_pyramid_clone();
107
108 facilitycode = (fc & 0x000000FF);
109 cardnumber = (cn & 0x0000FFFF);
110
111 // get wiegand from printed number.
112 //GetWiegandFromPyramid(Cmd, &facilitycode, &cardnumber);
113
114 if ( !GetPyramidBits(facilitycode, cardnumber, bs)) {
115 PrintAndLog("Error with tag bitstream generation.");
116 return 1;
117 }
118
119 blocks[1] = bytebits_to_byte(bs,32);
120 blocks[2] = bytebits_to_byte(bs+32,32);
121 blocks[3] = bytebits_to_byte(bs+64,32);
122 blocks[4] = bytebits_to_byte(bs+96,32);
123
124 PrintAndLog("Preparing to clone Farepointe/Pyramid to T55x7 with Facility Code: %u, Card Number: %u", facilitycode, cardnumber);
125 PrintAndLog("Blk | Data ");
126 PrintAndLog("----+------------");
127 for ( uint8_t i=0; i<5; ++i )
128 PrintAndLog(" %d | %08x",i , blocks[i]);
129
130 UsbCommand resp;
131 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
132
133 for ( uint8_t i=0; i<5; ++i ) {
134 c.arg[0] = blocks[i];
135 c.arg[1] = i;
136 clearCommandBuffer();
137 SendCommand(&c);
138 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
139 PrintAndLog("Error occurred, device did not respond during write operation.");
140 return -1;
141 }
142 }
143 return 0;
144 }
145
146 int CmdPyramidSim(const char *Cmd) {
147 // uint32_t id = 0;
148 // uint64_t rawID = 0;
149 // uint8_t clk = 50, encoding = 1, separator = 0, invert = 0;
150
151 char cmdp = param_getchar(Cmd, 0);
152 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_pyramid_sim();
153
154 // id = param_get32ex(Cmd, 0, 0, 16);
155 // if (id == 0) return usage_lf_pyramid_sim();
156
157 //rawID = getPyramidBits(id);
158
159 // uint16_t arg1, arg2;
160 // size_t size = 64;
161 // arg1 = clk << 8 | encoding;
162 // arg2 = invert << 8 | separator;
163
164 // PrintAndLog("Simulating - ID: %08X, Raw: %08X%08X",id,(uint32_t)(rawID >> 32),(uint32_t) (rawID & 0xFFFFFFFF));
165
166 // UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
167 // num_to_bytebits(rawID, size, c.d.asBytes);
168 // clearCommandBuffer();
169 // SendCommand(&c);
170 return 0;
171 }
172
173 static command_t CommandTable[] = {
174 {"help", CmdHelp, 1, "This help"},
175 {"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
176 {"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
177 {"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
178 {NULL, NULL, 0, NULL}
179 };
180
181 int CmdLFPyramid(const char *Cmd) {
182 clearCommandBuffer();
183 CmdsParse(CommandTable, Cmd);
184 return 0;
185 }
186
187 int CmdHelp(const char *Cmd) {
188 CmdsHelp(CommandTable);
189 return 0;
190 }
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