]> git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfviking.c
FIX: @marshmellow's fix for "lf viking clone", wrong mask was applied.
[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
57 //by marshmellow
58 //see ASKDemod for what args are accepted
59 int CmdVikingRead(const char *Cmd) {
60 // read lf silently
61 CmdLFRead("s");
62 // get samples silently
63 getSamples("30000",false);
64 // demod and output viking ID
65 return CmdVikingDemod(Cmd);
66 }
67
68 int CmdVikingClone(const char *Cmd) {
69 uint32_t id = 0;
70 uint64_t rawID = 0;
71 bool Q5 = false;
72 char cmdp = param_getchar(Cmd, 0);
73 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_clone();
74
75 id = param_get32ex(Cmd, 0, 0, 16);
76 if (id == 0) return usage_lf_viking_clone();
77
78 cmdp = param_getchar(Cmd, 1);
79 if ( cmdp == 'Q' || cmdp == 'q')
80 Q5 = true;
81
82 rawID = getVikingBits(id);
83
84 UsbCommand c = {CMD_VIKING_CLONE_TAG,{rawID >> 32, rawID & 0xFFFFFFFF, Q5}};
85 clearCommandBuffer();
86 SendCommand(&c);
87 //check for ACK
88 WaitForResponse(CMD_ACK,NULL);
89 return 0;
90 }
91
92 int CmdVikingSim(const char *Cmd) {
93 uint32_t id = 0;
94 uint64_t rawID = 0;
95 uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
96
97 char cmdp = param_getchar(Cmd, 0);
98 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_sim();
99
100 id = param_get32ex(Cmd, 0, 0, 16);
101 if (id == 0) return usage_lf_viking_sim();
102
103 rawID = getVikingBits(id);
104
105 uint16_t arg1, arg2;
106 size_t size = 64;
107 arg1 = clk << 8 | encoding;
108 arg2 = invert << 8 | separator;
109
110 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
111 PrintAndLog("preparing to sim ask data: %d bits", size);
112 num_to_bytebits(rawID, 64, c.d.asBytes);
113 clearCommandBuffer();
114 SendCommand(&c);
115 return 0;
116 }
117
118 static command_t CommandTable[] = {
119 {"help", CmdHelp, 1, "This help"},
120 {"read", CmdVikingRead, 0, "Attempt to read and Extract tag data"},
121 {"clone", CmdVikingClone, 0, "<8 digit ID number> clone viking tag"},
122 {"sim", CmdVikingSim, 0, "<8 digit ID number> simulate viking tag"},
123 {NULL, NULL, 0, NULL}
124 };
125
126 int CmdLFViking(const char *Cmd) {
127 CmdsParse(CommandTable, Cmd);
128 return 0;
129 }
130
131 int CmdHelp(const char *Cmd) {
132 CmdsHelp(CommandTable);
133 return 0;
134 }
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