- // wait for button to be released
- while(BUTTON_PRESS())
- {
- // Delay cloning until card is in place
- WDT_HIT();
- }
- Dbprintf("Starting clone. [Bank: %u]", selected);
- // need this delay to prevent catching some weird data
- SpinDelay(500);
- // Begin clone function here:
- /* Example from client/mifarehost.c for commanding a block write for "magic Chinese" cards:
- UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
- memcpy(c.d.asBytes, data, 16);
- SendCommand(&c);
-
- Block read is similar:
- UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
- We need to imitate that call with blockNo 0 to set a uid.
-
- The get and set commands are handled in this file:
- // Work with "magic Chinese" card
- case CMD_MIFARE_CSETBLOCK:
- MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
- break;
- case CMD_MIFARE_CGETBLOCK:
- MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
- //
- break;
-
- mfCSetUID provides example logic for UID set workflow:
- -Read block0 from card in field with MifareCGetBlock()
- -Configure new values without replacing reserved bytes
- memcpy(block0, uid, 4); // Copy UID bytes from byte array
- // Mifare UID BCC
- block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // BCC on byte 5
- Bytes 5-7 are reserved SAK and ATQA for mifare classic
- -Use mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER) to write it
- */
- uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0}, testBlock0[16] = {0};
- // arg0 = Flags == CSETBLOCK_SINGLE_OPER=0x1F, arg1=returnSlot, arg2=blockNo
- MifareCGetBlock(0x1F, 1, 0, oldBlock0);
- Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0],oldBlock0[1],oldBlock0[2],oldBlock0[3]);
- memcpy(newBlock0,oldBlock0,16);
- // Copy uid_1st for bank (2nd is for longer UIDs not supported if classic)
-
- newBlock0[0] = uid_1st[selected]>>24;
- newBlock0[1] = 0xFF & (uid_1st[selected]>>16);
- newBlock0[2] = 0xFF & (uid_1st[selected]>>8);
- newBlock0[3] = 0xFF & (uid_1st[selected]);
- newBlock0[4] = newBlock0[0]^newBlock0[1]^newBlock0[2]^newBlock0[3];
- // arg0 = needWipe, arg1 = workFlags, arg2 = blockNo, datain
- MifareCSetBlock(0, 0xFF,0, newBlock0);
- MifareCGetBlock(0x1F, 1, 0, testBlock0);
- if (memcmp(testBlock0,newBlock0,16)==0)
- {
- DbpString("Cloned successfull!");
- cardRead[selected] = 0; // Only if the card was cloned successfully should we clear it
- }
- LEDsoff();
- LED(selected + 1, 0);
- // Finished recording