FIX: CoverityScan 123358 and 133864 - Unchecked return value

[proxmark3-svn] / client / cmdlfhid.c

diff --git a/client/cmdlfhid.c b/client/cmdlfhid.c
index 8ea01b6f976faa0bc7991bd68015a6e302b2dacf..fd0f6eba137572b7d25b38d835eccdaf2206daf1 100644 (file)
--- a/client/cmdlfhid.c
+++ b/client/cmdlfhid.c
@@ -8,117 +8,428 @@
 // Low frequency HID commands
 //-----------------------------------------------------------------------------
 
 // Low frequency HID commands
 //-----------------------------------------------------------------------------
 

-#include <stdio.h>
-#include <string.h>
-//#include "proxusb.h"
-#include "proxmark3.h"
-#include "ui.h"
-#include "graph.h"
-#include "cmdparser.h"

 #include "cmdlfhid.h"
 
 static int CmdHelp(const char *Cmd);
 
 #include "cmdlfhid.h"
 
 static int CmdHelp(const char *Cmd);
 

-int CmdHIDDemod(const char *Cmd)
-{
-  if (GraphTraceLen < 4800) {
-    PrintAndLog("too short; need at least 4800 samples");
-    return 0;
-  }
-
-  GraphTraceLen = 4800;
-  for (int i = 0; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] < 0) {
-      GraphBuffer[i] = 0;
-    } else {
-      GraphBuffer[i] = 1;
-    }
-  }
-  RepaintGraphWindow();
-  return 0;
+int usage_lf_hid_wiegand(void){
+       PrintAndLog("This command converts facility code/card number to Wiegand code");
+       PrintAndLog("Usage: lf hid wiegand [h] [OEM] [FC] [CN]");
+
+       PrintAndLog("Options:");
+       PrintAndLog("       h             - This help");
+       PrintAndLog("       OEM           - OEM number / site code");
+       PrintAndLog("       FC            - facility code");
+       PrintAndLog("       CN            - card number");
+       PrintAndLog("Examples:");
+       PrintAndLog("      lf hid wiegand 0 101 2001");
+       return 0;
+}
+int usage_lf_hid_sim(void){
+       PrintAndLog("HID Tag simulator");
+       PrintAndLog("");
+       PrintAndLog("Usage:  lf hid sim [h] [ID]");
+       PrintAndLog("Options:");
+       PrintAndLog("       h   - This help");
+       PrintAndLog("       ID  - HID id");
+       PrintAndLog("Examples:");
+       PrintAndLog("      lf hid sim 224");
+       return 0;
+}
+int usage_lf_hid_clone(void){
+       PrintAndLog("Clone HID to T55x7.  Tag must be on antenna. ");
+       PrintAndLog("");
+       PrintAndLog("Usage:  lf hid clone [h] [ID] <L>");
+       PrintAndLog("Options:");
+       PrintAndLog("       h   - This help");
+       PrintAndLog("       ID  - HID id");
+       PrintAndLog("       L   - 84bit ID");
+       PrintAndLog("Examples:");
+       PrintAndLog("      lf hid clone 224");
+       PrintAndLog("      lf hid clone 224 L");
+       return 0;
+}
+int usage_lf_hid_brute(void){
+       PrintAndLog("Enables bruteforce of HID readers with specified facility code.");
+       PrintAndLog("Different formatlength is supported");
+       PrintAndLog("This is a incremental attack against reader.");
+       PrintAndLog("");
+       PrintAndLog("Usage:  lf hid brute [h] <format length> <facility code>");
+       PrintAndLog("Options :");
+       PrintAndLog("  h                                - This help");  
+       PrintAndLog("  <format length>  - 26|33|34|35|37|40|44|84");
+       PrintAndLog("  <facility code>  - 8-bit value HID facility code");
+       PrintAndLog("");
+       PrintAndLog("Sample  : lf hid brute 26 224");
+       return 0;

 }
 
 }
 

-int CmdHIDDemodFSK(const char *Cmd)
-{
-  UsbCommand c={CMD_HID_DEMOD_FSK};
-  SendCommand(&c);
-  return 0;
+int CmdHIDDemodFSK(const char *Cmd) {
+       int findone = ( Cmd[0] == '1' ) ? 1 : 0;
+       UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}};
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;

 }
 
 }
 

-int CmdHIDSim(const char *Cmd)
-{
-  unsigned int hi2 = 0, hi = 0, lo = 0;
-  int n = 0, i = 0;
-  UsbCommand c;
-
-  if (strchr(Cmd,'l') != 0) {
-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      hi2 = (hi2 << 4) | (hi >> 28);
-      hi = (hi << 4) | (lo >> 28);
-      lo = (lo << 4) | (n & 0xf);
-    }
-    
-    PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
-    
-    c.d.asBytes[0] = 1;
+int CmdHIDSim(const char *Cmd) {
+       unsigned int hi = 0, lo = 0;
+       int n = 0, i = 0;
+
+       uint8_t ctmp = param_getchar(Cmd, 0);
+       if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_sim();
+       
+       while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+               hi = (hi << 4) | (lo >> 28);
+               lo = (lo << 4) | (n & 0xf);
+       }
+
+       PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
+       PrintAndLog("Press pm3-button to abort simulation");
+
+       UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}
+
+int CmdHIDClone(const char *Cmd) {
+       
+       unsigned int hi2 = 0, hi = 0, lo = 0;
+       int n = 0, i = 0;
+       UsbCommand c;
+
+       uint8_t ctmp = param_getchar(Cmd, 0);
+       if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_clone();
+
+       if (strchr(Cmd,'l') != 0) {
+               while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+                       hi2 = (hi2 << 4) | (hi >> 28);
+                       hi = (hi << 4) | (lo >> 28);
+                       lo = (lo << 4) | (n & 0xf);
+               }
+
+               PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
+
+               c.d.asBytes[0] = 1;
+       } else {
+               while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+                       hi = (hi << 4) | (lo >> 28);
+                       lo = (lo << 4) | (n & 0xf);
+               }
+
+               PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
+
+               hi2 = 0;
+               c.d.asBytes[0] = 0;

        }
        }

-       else {
-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      hi = (hi << 4) | (lo >> 28);
-      lo = (lo << 4) | (n & 0xf);
-    }
-    
-    PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
-    
-    hi2 = 0;
-    c.d.asBytes[0] = 0;
-  }
-  
-  c.cmd = CMD_HID_CLONE_TAG;
+
+       c.cmd = CMD_HID_CLONE_TAG;

        c.arg[0] = hi2;
        c.arg[1] = hi;
        c.arg[2] = lo;
        c.arg[0] = hi2;
        c.arg[1] = hi;
        c.arg[2] = lo;

-  
-//  UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
-  SendCommand(&c);
-  return 0;
+
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}
+// struct to handle wiegand
+typedef struct {
+       uint8_t  FormatLen;
+       uint8_t  SiteCode;
+       uint8_t  FacilityCode;
+       uint8_t  CardNumber;
+       uint8_t* Wiegand;
+       size_t   Wiegand_n;
+ } wiegand_t;
+
+// static void addHIDMarker(uint8_t fmtlen, uint8_t *out) {
+       
+// }
+//static void getParity26(uint32_t *hi, uint32_t *lo){
+       // uint32_t result = 0;
+       // int i;
+       // // even parity
+       // for (i = 24;i >= 13;i--)
+               // result ^= (*lo >> i) & 1;
+       // // even parity 26th bit
+       // *lo |= result << 25;
+
+       // // odd parity 
+       // result = 0;
+       // for (i = 12;i >= 1;i--)
+               // result ^= (*lo >> i) & 1;
+       // *lo |= !result;
+//}
+
+// static void getParity33(uint32_t *hi, uint32_t *lo){
+
+// }
+// static void getParity34(uint32_t *hi, uint32_t *lo){
+       // uint32_t result = 0;
+       // int i;
+
+       // // even parity 
+       // for (i = 7;i >= 0;i--)
+               // result ^= (*hi >> i) & i;
+       // for (i = 31;i >= 24;i--)
+               // result ^= (*lo >> i) & 1;
+
+       // *hi |= result << 2; 
+
+       // // odd parity bit
+       // result = 0;
+       // for (i = 23;i >= 1;i--)
+               // result ^= (*lo >> i) & 1;
+
+       // *lo |= !result;
+// }
+// static void getParity35(uint32_t *hi, uint32_t *lo){        
+// }
+// static void getParity37S(uint32_t *hi,uint32_t *lo){
+       // uint32_t result = 0;
+       // int i;
+
+       // // even parity
+       // for (i = 4; i >= 0; i--)
+               // result ^= (*hi >> i) & 1;
+       
+       // for (i = 31; i >= 20; i--)
+               // result ^= (*lo >> i) & 1;
+
+       // *hi |= result;
+
+       // // odd parity
+       // result = 0;
+       // for (i = 19; i >= 1; i--)
+               // result ^= (*lo >> i) & 1;
+
+       // *lo |= result;
+// }
+// static void getParity37H(uint32_t *hi, uint32_t *lo){
+       // uint32_t result = 0;
+       // int i;
+
+       // // even parity
+       // for (i = 4;i >= 0;i--)
+               // result ^= (*hi >> i) & 1;
+       // for (i = 31;i >= 20;i--)
+               // result ^= (*lo >> i) & 1;
+       // *hi |= result << 4;
+
+       // // odd parity
+       // result = 0;
+       // for (i = 19;i >= 1;i--)
+               // result ^= (*lo >> i) & 1;
+       // *lo |= result;
+// }
+
+//static void calc26(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+void calc26(uint16_t fc, uint32_t cardno, uint8_t *out){
+
+       uint8_t wiegand[24];
+       num_to_bytebits(fc, 8, wiegand);
+       num_to_bytebits(cardno, 16, wiegand+8);
+       wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
+       
+//   *out |= (1 << 26); // why this?
+//   *out |= (1 << 37);  // bit format for hid?
+}
+// static void calc33(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+
+// }
+// static void calc34(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+  // // put card number first bit 1 .. 20 //
+  // *lo = ((cardno & 0X000F7FFF) << 1) | ((fc & 0XFFFF) << 17);
+  // // set bit format for less than 37 bit format
+  // *hi = (1 << 5) | (fc >> 15);
+// }
+// static void calc35(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+       // *lo = ((cardno & 0xFFFFF) << 1) | fc << 21; 
+       // *hi = (1 << 5) | ((fc >> 11) & 1);  
+// }
+// static void calc37S(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
+       // // FC 2 - 17   - 16 bit  
+       // // cardno 18 - 36  - 19 bit
+       // // Even P1   1 - 19
+       // // Odd  P37  19 - 36
+
+       // fc = fc & 0xFFFF;
+       // *lo = ((fc << 20) | (cardno & 0x7FFFF) << 1);
+       // *hi = (fc >> 12);
+// }
+// static void calc37H(uint64_t cardno, uint32_t *hi, uint32_t *lo){
+       // // SC NONE
+       // // cardno 1-35 34 bits 
+       // // Even Parity  0th bit  1-18
+       // // Odd  Parity 36th bit 19-35
+       // cardno = (cardno & 0x00000003FFFFFFFF);
+       // *lo = (cardno << 1);
+       // *hi = (cardno >> 31);
+// }
+// static void calc40(uint64_t cardno, uint32_t *hi, uint32_t *lo){
+       // cardno = (cardno & 0xFFFFFFFFFF);
+       // *lo = ((cardno & 0xFFFFFFFF) << 1 ); 
+       // *hi = (cardno >> 31);  
+// }
+
+static void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint8_t *bits){
+
+       // uint32_t hi = 0, lo = 0;
+       // uint32_t cn32 = (cardno & 0xFFFFFFFF);
+       // switch ( fmtlen ) {
+               // case 26 : {                  
+                       // calc26(fc, cn32, bits);
+                       // addHIDFormatMarker(fmtlen, bits);    
+                       // break;
+               // }
+               // case 33 : { 
+                       // // calc33(fc, cn32, hi, lo);
+                       // // getParity33(hi, lo);      
+                       // break;
+               // }
+               // case 34 : {
+                       // calc34(fc, cn32, hi, lo);
+                       // getParity34(hi, lo);         
+                       // break;
+               // }
+               // case 35 : {
+                       // calc35(fc, cn32, hi, lo);
+                       // getParity35(hi, lo);
+                       // break;
+               // }
+               // case 37 : {
+                       // calc37S(fc, cn32, hi, lo);
+                       // getParity37S(hi, lo);
+                       // break;
+               // }
+               // case 38 : { 
+                       // calc37H(cn32, hi, lo);
+                       // getParity37H(hi, lo);
+                       // break;
+               // }
+               // case 40 : calc40(cardno, hi, lo);    break;
+               // case 44 : { break; }
+               // case 84 : { break; }
+       // }
+
+}      
+
+int CmdHIDWiegand(const char *Cmd) {
+       uint32_t oem = 0, fc = 0;
+       uint64_t cardnum = 0;
+       
+       uint32_t blocks[2] = {0,0};
+       uint32_t wiegand[2] = {0,0}; 
+
+       uint8_t bits[96];
+       uint8_t *bs = bits;
+       memset(bs, 0, sizeof(bits));
+       
+       uint8_t ctmp = param_getchar(Cmd, 0);
+       if ( strlen(Cmd) == 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand();
+
+       oem = param_get8(Cmd, 0);
+       fc = param_get32ex(Cmd, 1, 0, 10);
+       cardnum = param_get64ex(Cmd, 2, 0, 10);
+
+       // 
+       uint8_t ftmlen[] = {26,33,34,35,37,38,40};
+       
+       PrintAndLog("HID | OEM |  FC |   CN  |  Wiegand  |  HID Formatted");
+       PrintAndLog("----+-----+-----+-------+-----------+--------------------");
+       for (uint8_t i = 0; i < sizeof(ftmlen); i++){
+               calcWiegand( ftmlen[i], fc, cardnum, bs);
+               blocks[0] = bytebits_to_byte(bs,32);
+               blocks[1] = bytebits_to_byte(bs+32,32);
+               PrintAndLog(" %d | %d  | %d  | %llu  | %08X%08X  |  %08X%08X ",
+                       ftmlen,
+                       oem,
+                       fc,
+                       cardnum,
+                       wiegand[0],
+                       wiegand[1],
+                       blocks[0],
+                       blocks[1]
+                       );
+       }
+       PrintAndLog("----+-----+-----+-------+-----------+--------------------");
+       return 0;

 }
 
 }
 

-int CmdHIDClone(const char *Cmd)
-{
-  unsigned int hi = 0, lo = 0;
-  int n = 0, i = 0;
+int CmdHIDBrute(const char *Cmd){
+       
+       bool error = TRUE;
+       uint8_t fc = 0, fmtlen = 0;

 
 

-  while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-    hi = (hi << 4) | (lo >> 28);
-    lo = (lo << 4) | (n & 0xf);
-  }
+       uint8_t bits[96];
+       uint8_t *bs = bits;
+       memset(bs, 0, sizeof(bits));

 
 

-  PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
+       UsbCommand c = {CMD_HID_SIM_TAG, {0, 0, 0}};  
+       
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) > 2 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_hid_brute();

 
 

-  UsbCommand c = {CMD_HID_CLONE_TAG, {hi, lo}};
-  SendCommand(&c);
-  return 0;
+       fmtlen = param_get8(Cmd, 0);
+       uint8_t ftms[] = {26,33,34,35,37};
+       for ( uint8_t i = 0; i < sizeof(ftms); i++){
+               if ( ftms[i] == fmtlen ) {
+                       error = FALSE;
+               }
+       }
+
+       if ( error ) return usage_lf_hid_brute();
+       
+       fc =  param_get8(Cmd, 1);
+       if ( fc == 0) return usage_lf_hid_brute();
+       
+       PrintAndLog("Brute-forcing HID reader");
+       PrintAndLog("Press pm3-button to abort simulation or run another command");
+
+       for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
+               if (ukbhit()) {
+                       PrintAndLog("aborted via keyboard!");
+                       c.cmd = CMD_PING;
+                       c.arg[0] = 0x00;
+                       c.arg[1] = 0x00;
+                       c.arg[2] = 0x00;
+                       clearCommandBuffer();
+                       SendCommand(&c);
+                       return 1;
+               }
+
+               calcWiegand( fmtlen, fc, cn, bs);
+
+               c.arg[0] = bytebits_to_byte(bs,32);
+               c.arg[1] = bytebits_to_byte(bs+32,32);
+               clearCommandBuffer();
+               SendCommand(&c);
+               
+               PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
+               // pause
+               sleep(1);
+       }
+       return 0;

 }
 
 }
 

-static command_t CommandTable[] = 
-{
-  {"help",      CmdHelp,        1, "This help"},
-  {"demod",     CmdHIDDemod,    1, "Demodulate HID Prox Card II (not optimal)"},
-  {"fskdemod",  CmdHIDDemodFSK, 1, "Realtime HID FSK demodulator"},
-  {"sim",       CmdHIDSim,      1, "<ID> -- HID tag simulator"},
-  {"clone",     CmdHIDClone,    1, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
-  {NULL, NULL, 0, NULL}
+static command_t CommandTable[] = {
+       {"help",    CmdHelp,        1, "This help"},
+       {"fskdemod",CmdHIDDemodFSK, 0, "[1] Realtime HID FSK demodulator (option '1' for one tag only)"},
+       {"sim",     CmdHIDSim,      0, "<ID> -- HID tag simulator"},
+       {"clone",   CmdHIDClone,    0, "<ID> [L] -- Clone HID to T55x7"},
+       {"wiegand", CmdHIDWiegand,  0, "<OEM> <facility code> <card number> -- convert facility code/card number to Wiegand code"},
+       {"brute",   CmdHIDBrute, 0, "<format length> <facility code> -- brute force card number"},
+       {NULL, NULL, 0, NULL}

 };
 
 };
 

-int CmdLFHID(const char *Cmd)
-{
-  CmdsParse(CommandTable, Cmd);
-  return 0;
+int CmdLFHID(const char *Cmd) {
+       clearCommandBuffer();
+       CmdsParse(CommandTable, Cmd);
+       return 0;

 }
 
 }
 

-int CmdHelp(const char *Cmd)
-{
-  CmdsHelp(CommandTable);
-  return 0;
+int CmdHelp(const char *Cmd) {
+       CmdsHelp(CommandTable);
+       return 0;

 }
 }