move viking demod to respective file
[proxmark3-svn] / client / cmdlfviking.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 Viking tag commands
8 //-----------------------------------------------------------------------------
9 #include <stdio.h>
10 #include <string.h>
11 #include <inttypes.h>
12 #include "proxmark3.h"
13 #include "ui.h"
14 #include "util.h"
15 #include "graph.h"
16 #include "cmdparser.h"
17 #include "cmddata.h"
18 #include "cmdmain.h"
19 #include "cmdlf.h"
20 #include "lfdemod.h"
21 static int CmdHelp(const char *Cmd);
22
23 int usage_lf_viking_clone(void) {
24 PrintAndLog("clone a Viking AM tag to a T55x7 tag.");
25 PrintAndLog("Usage: lf viking clone <Card ID - 8 hex digits> <Q5>");
26 PrintAndLog("Options :");
27 PrintAndLog(" <Card Number> : 8 digit hex viking card number");
28 PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
29 PrintAndLog("");
30 PrintAndLog("Sample : lf viking clone 1A337 Q5");
31 return 0;
32 }
33
34 int usage_lf_viking_sim(void) {
35 PrintAndLog("Enables simulation of viking card with specified card number.");
36 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
37 PrintAndLog("Per viking format, the card number is 8 digit hex number. Larger values are truncated.");
38 PrintAndLog("");
39 PrintAndLog("Usage: lf viking sim <Card-Number>");
40 PrintAndLog("Options :");
41 PrintAndLog(" <Card Number> : 8 digit hex viking card number");
42 PrintAndLog("");
43 PrintAndLog("Sample : lf viking sim 1A337");
44 return 0;
45 }
46
47 uint64_t getVikingBits(uint32_t id) {
48 //calc checksum
49 uint8_t checksum = ((id>>24) & 0xFF) ^ ((id>>16) & 0xFF) ^ ((id>>8) & 0xFF) ^ (id & 0xFF) ^ 0xF2 ^ 0xA8;
50 return ((uint64_t)0xF2 << 56) | ((uint64_t)id << 8) | checksum;
51 }
52
53 //could be moved to a viking file
54 //by marshmellow
55 //see ASKDemod for what args are accepted
56 int CmdVikingDemod(const char *Cmd) {
57 if (!ASKDemod(Cmd, false, false, 1)) {
58 if (g_debugMode) PrintAndLog("ASKDemod failed");
59 return 0;
60 }
61 size_t size = DemodBufferLen;
62 //call lfdemod.c demod for Viking
63 int ans = VikingDemod_AM(DemodBuffer, &size);
64 if (ans < 0) {
65 if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
66 return 0;
67 }
68 //got a good demod
69 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
70 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
71 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
72 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
73 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, (unsigned int) checksum);
74 PrintAndLog("Raw: %08X%08X", raw1,raw2);
75 setDemodBuf(DemodBuffer+ans, 64, 0);
76 return 1;
77 }
78
79 //by marshmellow
80 //see ASKDemod for what args are accepted
81 int CmdVikingRead(const char *Cmd) {
82 // read lf silently
83 CmdLFRead("s");
84 // get samples silently
85 getSamples("10000",false);
86 // demod and output viking ID
87 return CmdVikingDemod(Cmd);
88 }
89
90 int CmdVikingClone(const char *Cmd) {
91 uint32_t id = 0;
92 uint64_t rawID = 0;
93 bool Q5 = false;
94 char cmdp = param_getchar(Cmd, 0);
95 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_clone();
96
97 id = param_get32ex(Cmd, 0, 0, 16);
98 if (id == 0) return usage_lf_viking_clone();
99 if (param_getchar(Cmd, 1)=='Q' || param_getchar(Cmd, 1)=='q')
100 Q5 = true;
101
102 rawID = getVikingBits(id);
103 PrintAndLog("Cloning - ID: %08X, Raw: %08X%08X",id,(uint32_t)(rawID >> 32),(uint32_t) (rawID & 0xFFFFFFFF));
104 UsbCommand c = {CMD_VIKING_CLONE_TAG,{rawID >> 32, rawID & 0xFFFFFFFF, Q5}};
105 clearCommandBuffer();
106 SendCommand(&c);
107 //check for ACK
108 WaitForResponse(CMD_ACK,NULL);
109 return 0;
110 }
111
112 int CmdVikingSim(const char *Cmd) {
113 uint32_t id = 0;
114 uint64_t rawID = 0;
115 uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
116 char cmdp = param_getchar(Cmd, 0);
117
118 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_sim();
119 id = param_get32ex(Cmd, 0, 0, 16);
120 if (id == 0) return usage_lf_viking_sim();
121
122 rawID = getVikingBits(id);
123
124 uint16_t arg1, arg2;
125 size_t size = 64;
126 arg1 = clk << 8 | encoding;
127 arg2 = invert << 8 | separator;
128
129 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
130 PrintAndLog("preparing to sim ask data: %d bits", size);
131 num_to_bytebits(rawID, 64, c.d.asBytes);
132 clearCommandBuffer();
133 SendCommand(&c);
134 return 0;
135 }
136
137 static command_t CommandTable[] = {
138 {"help", CmdHelp, 1, "This help"},
139 {"demod", CmdVikingDemod, 1, "Demodulate a Viking tag from the GraphBuffer"},
140 {"read", CmdVikingRead, 0, "Attempt to read and Extract tag data from the antenna"},
141 {"clone", CmdVikingClone, 0, "<8 digit ID number> clone viking tag"},
142 {"sim", CmdVikingSim, 0, "<8 digit ID number> simulate viking tag"},
143 {NULL, NULL, 0, NULL}
144 };
145
146 int CmdLFViking(const char *Cmd) {
147 CmdsParse(CommandTable, Cmd);
148 return 0;
149 }
150
151 int CmdHelp(const char *Cmd) {
152 CmdsHelp(CommandTable);
153 return 0;
154 }
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