CHG: finally, the ticks timer does what it is supposed to do. 32bits and working.

[proxmark3-svn] / client / cmdhflegic.c

diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c
index 7b75f91c6f056e87ca59f4da7f6e6d3ed53c73b3..f0fb12be8b7973ed1d2db94eb7925e35a60ccc55 100644 (file)
--- a/client/cmdhflegic.c
+++ b/client/cmdhflegic.c
@@ -11,7 +11,6 @@
 
 static int CmdHelp(const char *Cmd);
 
-#define SESSION_IV 0x55
 #define MAX_LENGTH 1024        
 
 int usage_legic_calccrc8(void){
@@ -90,7 +89,16 @@ int usage_legic_fill(void){
        PrintAndLog("Missing help text.");
        return 0;
 }
-
+int usage_legic_info(void){
+       PrintAndLog("Read info from a legic tag.");
+       PrintAndLog("Usage:  hf legic info [h]");
+       PrintAndLog("Options:");
+       PrintAndLog("  h             : this help");
+       PrintAndLog("");
+       PrintAndLog("Samples:");
+       PrintAndLog("      hf legic info");
+       return 0;
+}
 /*
  *  Output BigBuf and deobfuscate LEGIC RF tag data.
  *  This is based on information given in the talk held
@@ -382,8 +390,8 @@ int CmdLegicDecode(const char *Cmd) {
 int CmdLegicRFRead(const char *Cmd) {
 
        // params:
-       // offset in data
-       // number of bytes.
+       // offset in data memory
+       // number of bytes to read
        char cmdp = param_getchar(Cmd, 0);
        if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read();
        
@@ -391,21 +399,44 @@ int CmdLegicRFRead(const char *Cmd) {
        sscanf(Cmd, "%x %x %x", &offset, &len, &IV);
 
        // OUT-OF-BOUNDS check
-       if(len + offset > MAX_LENGTH) len = MAX_LENGTH - offset;
+       if ( len + offset > MAX_LENGTH ) {
+               len = MAX_LENGTH - offset;
+               PrintAndLog("Out-of-bound, shorten len to %d", len);
+       }
        
        if ( (IV & 0x7F) != IV ){
                IV &= 0x7F;
                PrintAndLog("Truncating IV to 7bits");
        }
+       
        if ( (IV & 1) == 0 ){
-               IV |= 0x01;  // IV must be odd
+               IV |= 0x01;
                PrintAndLog("LSB of IV must be SET");   
        }
-       PrintAndLog("Current IV: 0x%02x", IV);
+
+       //PrintAndLog("Using IV: 0x%02x | Offset: 0x%02x | Len: 0x%02x ", IV, offset, len);
        
-       UsbCommand c= {CMD_READER_LEGIC_RF, {offset, len, IV}};
+       UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}};
        clearCommandBuffer();
        SendCommand(&c);
+       UsbCommand resp;
+       if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
+               uint8_t isOK = resp.arg[0] & 0xFF;
+               uint16_t len = resp.arg[1] & 0x3FF;
+                if ( isOK ) {
+                       PrintAndLog("use 'hf legic decode'");
+
+                       uint8_t *data = resp.d.asBytes;
+                       PrintAndLog("\nData        |");
+                       PrintAndLog("-----------------------------");
+                       PrintAndLog(" %s|\n", sprint_hex(data, len));
+                } else {
+                        PrintAndLog("failed reading tag");
+                }
+       } else {
+               PrintAndLog("command execution time out");
+               return 1;
+       }
        return 0;
 }
 
@@ -664,6 +695,37 @@ int CmdLegicRfFill(const char *Cmd) {
     return 0;
  }
 
+void static calc4(uint8_t *cmd, uint8_t len){
+       crc_t crc;
+       //crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE);
+       crc_init(&crc, 4, 0x19 >> 1, 0x5, 0);
+
+       crc_clear(&crc);
+       crc_update(&crc, 1, 1); /* CMD_READ */
+       crc_update(&crc, cmd[0], 8);
+       crc_update(&crc, cmd[1], 8);
+       printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ;
+
+       crc_clear(&crc);
+       crc_update(&crc, 1, 1); /* CMD_READ */
+       crc_update(&crc, cmd[0], 8);
+       crc_update(&crc, cmd[1], 8);
+       printf("crc4 %X\n",  crc_finish(&crc) ) ;
+
+       printf("---- old ---\n");
+       crc_update2(&crc, 1, 1); /* CMD_READ */
+       crc_update2(&crc, cmd[0], 8);
+       crc_update2(&crc, cmd[1], 8);
+       printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ;
+
+       
+       crc_clear(&crc);
+       crc_update2(&crc, 1, 1); /* CMD_READ */
+       crc_update2(&crc, cmd[0], 8);
+       crc_update2(&crc, cmd[1], 8);
+       printf("crc4 %X\n",  crc_finish(&crc) ) ;
+}      
+ 
 int CmdLegicCalcCrc8(const char *Cmd){
 
        uint8_t *data = NULL;
@@ -739,10 +801,13 @@ int CmdLegicCalcCrc8(const char *Cmd){
        
        switch (type){
                case 16:
-                       PrintAndLog("LEGIC CRC16: %X", CRC16Legic(data, len, uidcrc));
+                       PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc));
+                       break;
+               case 4:
+                       calc4(data, 0);
                        break;
                default:
-                       PrintAndLog("LEGIC CRC8: %X",  CRC8Legic(data, len) );
+                       PrintAndLog("Legic crc8: %X",  CRC8Legic(data, len) );
                        break;
        }
        
@@ -750,6 +815,46 @@ int CmdLegicCalcCrc8(const char *Cmd){
        return 0;
 } 
  
+int HFLegicInfo(const char *Cmd, bool verbose) {
+
+       char cmdp = param_getchar(Cmd, 0);
+       if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info();
+       
+       UsbCommand c = {CMD_LEGIC_INFO, {0,0,0}};
+       clearCommandBuffer();
+    SendCommand(&c);
+       UsbCommand resp;
+       if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) {
+               if ( verbose ) PrintAndLog("command execution time out");
+               return 1;
+       }
+       
+       uint8_t isOK = resp.arg[0] & 0xFF;
+       if ( !isOK ) {
+               if ( verbose ) PrintAndLog("legic card select failed");
+               return 1;
+       }
+       
+       legic_card_select_t card;
+       memcpy(&card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t));
+
+       PrintAndLog("  UID : %s", sprint_hex(card.uid, sizeof(card.uid)));
+       switch(card.cardsize) {
+               case 22:
+               case 256: 
+               case 1024:
+                       PrintAndLog(" TYPE : MIM%d card (%d bytes)", card.cardsize, card.cardsize); break;                              
+               default: {
+                       PrintAndLog("Unknown card format: %d", card.cardsize); 
+                       return 1;
+               }
+       }
+       return 0;
+}
+int CmdLegicInfo(const char *Cmd){
+       return HFLegicInfo(Cmd, TRUE);
+}
+       
 static command_t CommandTable[] =  {
        {"help",        CmdHelp,        1, "This help"},
        {"decode",      CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"},
@@ -761,6 +866,7 @@ static command_t CommandTable[] =  {
        {"writeraw",CmdLegicRfRawWrite, 0, "<address> <value> <iv> -- Write direct to address"},
        {"fill",        CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
        {"crc8",        CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"},
+       {"info",        CmdLegicInfo, 1, "Information"},
        {NULL, NULL, 0, NULL}
 };