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[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 "cmdlfviking.h"
21 #include "lfdemod.h"
22 static int CmdHelp(const char *Cmd);
23
24 int usage_lf_viking_clone(void){
25 PrintAndLog("clone a Viking AM tag to a T55x7 tag.");
26 PrintAndLog("Usage: lf viking clone <Card ID - 8 hex digits> <Q5>");
27 PrintAndLog("Options :");
28 PrintAndLog(" <Card Number> : 8 digit hex viking card number");
29 PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
30 PrintAndLog("");
31 PrintAndLog("Sample : lf viking clone 1A337 Q5");
32 return 0;
33 }
34
35 int usage_lf_viking_sim(void) {
36 PrintAndLog("Enables simulation of viking card with specified card number.");
37 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
38 PrintAndLog("Per viking format, the card number is 8 digit hex number. Larger values are truncated.");
39 PrintAndLog("");
40 PrintAndLog("Usage: lf viking sim <Card-Number>");
41 PrintAndLog("Options :");
42 PrintAndLog(" <Card Number> : 8 digit hex viking card number");
43 PrintAndLog("");
44 PrintAndLog("Sample : lf viking sim 1A337");
45 return 0;
46 }
47
48 // calc checksum
49 uint64_t getVikingBits(uint32_t id) {
50 uint8_t checksum = (id>>24) ^ ((id>>16) & 0xFF) ^ ((id>>8) & 0xFF) ^ (id & 0xFF) ^ 0xF2 ^ 0xA8;
51 uint64_t ret = (uint64_t)0xF2 << 56;
52 ret |= (id << 8);
53 ret |= checksum;
54 return ret;
55 }
56 //by marshmellow
57 //see ASKDemod for what args are accepted
58 int CmdVikingRead(const char *Cmd) {
59 // read lf silently
60 CmdLFRead("s");
61 // get samples silently
62 getSamples("30000",false);
63 // demod and output viking ID
64 return CmdVikingDemod(Cmd);
65 }
66
67 int CmdVikingClone(const char *Cmd) {
68 uint32_t id = 0;
69 uint64_t rawID = 0;
70 bool Q5 = false;
71 char cmdp = param_getchar(Cmd, 0);
72 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_clone();
73
74 id = param_get32ex(Cmd, 0, 0, 16);
75 if (id == 0) return usage_lf_viking_clone();
76
77 cmdp = param_getchar(Cmd, 1);
78 if ( cmdp == 'Q' || cmdp == 'q')
79 Q5 = true;
80
81 rawID = getVikingBits(id);
82
83 UsbCommand c = {CMD_VIKING_CLONE_TAG,{rawID >> 32, rawID & 0xFFFF, Q5}};
84 clearCommandBuffer();
85 SendCommand(&c);
86 //check for ACK
87 WaitForResponse(CMD_ACK,NULL);
88 return 0;
89 }
90
91 int CmdVikingSim(const char *Cmd) {
92 uint32_t id = 0;
93 uint64_t rawID = 0;
94 uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
95
96 char cmdp = param_getchar(Cmd, 0);
97 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_sim();
98
99 id = param_get32ex(Cmd, 0, 0, 16);
100 if (id == 0) return usage_lf_viking_sim();
101
102 rawID = getVikingBits(id);
103
104 uint16_t arg1, arg2;
105 size_t size = 64;
106 arg1 = clk << 8 | encoding;
107 arg2 = invert << 8 | separator;
108
109 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
110 PrintAndLog("preparing to sim ask data: %d bits", size);
111 num_to_bytebits(rawID, 64, c.d.asBytes);
112 clearCommandBuffer();
113 SendCommand(&c);
114 return 0;
115 }
116
117 static command_t CommandTable[] = {
118 {"help", CmdHelp, 1, "This help"},
119 {"read", CmdVikingRead, 0, "Attempt to read and Extract tag data"},
120 {"clone", CmdVikingClone, 0, "<8 digit ID number> clone viking tag"},
121 {"sim", CmdVikingSim, 0, "<8 digit ID number> simulate viking tag"},
122 {NULL, NULL, 0, NULL}
123 };
124
125 int CmdLFViking(const char *Cmd) {
126 CmdsParse(CommandTable, Cmd);
127 return 0;
128 }
129
130 int CmdHelp(const char *Cmd) {
131 CmdsHelp(CommandTable);
132 return 0;
133 }
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