Update README.txt

[proxmark3-svn] / client / cmdlfviking.c

diff --git a/client/cmdlfviking.c b/client/cmdlfviking.c
index f888ba8b942000c892004dc2eb5be5d7575e6b9d..a338d5a3eed63a6d819016fe4555b4bae4b8cd14 100644 (file)
--- a/client/cmdlfviking.c
+++ b/client/cmdlfviking.c
@@ -1,3 +1,11 @@
+//-----------------------------------------------------------------------------
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Low frequency Viking tag commands
+//-----------------------------------------------------------------------------
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
@@ -12,54 +20,114 @@
 #include "cmdlfviking.h"
 #include "lfdemod.h"
 static int CmdHelp(const char *Cmd);
-int CmdVikingDemod(const char *Cmd)
-{
-    uint8_t id[4];
-    if (param_gethex(Cmd,0,id,8) == 1)
-    {
-        PrintAndLog("Usage: lf viking demod <CardID 8 bytes of hex number>");
-        return 0;
-    }
-    UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {false,0,0}};
-    SendCommand(&c);
-    WaitForResponse(CMD_ACK,NULL);
-    getSamples("40000",true);
-    // try to demod AMViking
-    return AMVikingDemod(id);
+
+int usage_lf_viking_clone(void){
+       PrintAndLog("clone a Viking AM tag to a T55x7 tag.");
+       PrintAndLog("Usage: lf viking clone <Card ID - 8 hex digits> <Q5>");
+       PrintAndLog("Options :");
+       PrintAndLog("  <Card Number>  : 8 digit hex viking card number");
+       PrintAndLog("  <Q5>           : specify write to Q5 (t5555 instead of t55x7)");
+       PrintAndLog("");
+       PrintAndLog("Sample  : lf viking clone 1A337 Q5");
+       return 0;
 }
-int CmdVikingClone(const char *Cmd)
-{
-    uint32_t b1,b2;
-    // get the tag number 64 bits (8 bytes) in hex
-    uint8_t id[8];
-    if (param_gethex(Cmd,0,id,16) == 1)
-    {
-        PrintAndLog("Usage: lf viking clone <Card ID 16 bytes of hex number>");
-        return 0;
-    }
-    b1 = bytes_to_num(id,sizeof(uint32_t));
-    b2 = bytes_to_num(id + sizeof(uint32_t),sizeof(uint32_t));
-    UsbCommand c = {CMD_VIKING_CLONE_TAG,{b1,b2}};
-    SendCommand(&c);   
+
+int usage_lf_viking_sim(void) {
+       PrintAndLog("Enables simulation of viking card with specified card number.");
+       PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
+       PrintAndLog("Per viking format, the card number is 8 digit hex number.  Larger values are truncated.");
+       PrintAndLog("");
+       PrintAndLog("Usage:  lf viking sim <Card-Number>");
+       PrintAndLog("Options :");
+       PrintAndLog("  <Card Number>   : 8 digit hex viking card number");
+       PrintAndLog("");
+       PrintAndLog("Sample  : lf viking sim 1A337");
+       return 0;
+}
+
+// calc checksum
+uint64_t getVikingBits(uint32_t id) {
+       uint8_t checksum = (id>>24) ^ ((id>>16) & 0xFF) ^ ((id>>8) & 0xFF) ^ (id & 0xFF) ^ 0xF2 ^ 0xA8;
+       uint64_t ret = (uint64_t)0xF2 << 56;
+       ret |= (id << 8);
+       ret     |= checksum;
+       return ret;
+}
+//by marshmellow
+//see ASKDemod for what args are accepted
+int CmdVikingRead(const char *Cmd) {
+       // read lf silently
+       CmdLFRead("s");
+       // get samples silently
+       getSamples("30000",false);
+       // demod and output viking ID   
+       return CmdVikingDemod(Cmd);
+}
+
+int CmdVikingClone(const char *Cmd) {
+       uint32_t id = 0;
+       uint64_t rawID = 0;
+       bool Q5 = false;
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) < 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_clone();
+       
+       id = param_get32ex(Cmd, 0, 0, 16);
+       if (id == 0) return usage_lf_viking_clone();
+       
+       cmdp = param_getchar(Cmd, 1);
+       if ( cmdp == 'Q' || cmdp == 'q')
+               Q5 = true;
+
+       rawID = getVikingBits(id);
+
+       UsbCommand c = {CMD_VIKING_CLONE_TAG,{rawID >> 32, rawID & 0xFFFF, Q5}};
+       clearCommandBuffer();
+    SendCommand(&c);
+       //check for ACK
+       WaitForResponse(CMD_ACK,NULL);
     return 0;
 }
 
-static command_t CommandTable[] =
-{
-    {"help", CmdHelp, 1, "This help"},
-    {"demod",CmdVikingDemod ,1, "<8 digits tag id> -- Extract tag data"},
-    {"clone", CmdVikingClone, 1, "<16 digits card data>  clone viking tag"},
+int CmdVikingSim(const char *Cmd) {
+       uint32_t id = 0;
+       uint64_t rawID = 0;
+       uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
+
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) < 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_sim();
+
+       id = param_get32ex(Cmd, 0, 0, 16);
+       if (id == 0) return usage_lf_viking_sim();
+
+       rawID = getVikingBits(id);
+
+       uint16_t arg1, arg2;
+       size_t size = 64;
+       arg1 = clk << 8 | encoding;
+       arg2 = invert << 8 | separator;
+
+       UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+       PrintAndLog("preparing to sim ask data: %d bits", size);
+       num_to_bytebits(rawID, 64, c.d.asBytes);
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}
+
+static command_t CommandTable[] = {
+    {"help",   CmdHelp,                1, "This help"},
+       {"read",        CmdVikingRead,  0, "Attempt to read and Extract tag data"},
+       {"clone",       CmdVikingClone, 0, "<8 digit ID number> clone viking tag"},
+       {"sim",         CmdVikingSim,   0, "<8 digit ID number> simulate viking tag"},
     {NULL, NULL, 0, NULL}
 };
 
-int CmdLFViking(const char *Cmd)
-{
+int CmdLFViking(const char *Cmd) {
     CmdsParse(CommandTable, Cmd);
     return 0;
 }
 
-int CmdHelp(const char *Cmd)
-{
+int CmdHelp(const char *Cmd) {
     CmdsHelp(CommandTable);
     return 0;
 }