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4A emulation: warn if chaining command received

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This commit is contained in:
Philippe Teuwen 2025-02-12 15:46:12 +01:00
commit 4e5a8b9848
1 changed files with 5 additions and 2 deletions
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7
armsrc/iso14443a.c
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@ -4050,7 +4050,7 @@ void SimulateIso14443aTagAID(uint8_t tagType, uint16_t flags, uint8_t *uid,
dynamic_response_info.response_n = 0; dynamic_response_info.response_n = 0;
dynamic_response_info.modulation_n = 0; dynamic_response_info.modulation_n = 0;
// Check for ISO 14443A-4 compliant commands, look at left nibble // Check for ISO 14443A-4 compliant commands, look at left byte (PCB)
uint8_t offset = 0; uint8_t offset = 0;
switch (receivedCmd[0]) { switch (receivedCmd[0]) {
case 0x0B: // IBlock with CID case 0x0B: // IBlock with CID
@ -4136,12 +4136,15 @@ void SimulateIso14443aTagAID(uint8_t tagType, uint16_t flags, uint8_t *uid,
break; break;
default: { default: {
// Never seen this command before // Never seen this PCB before
LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);
if (g_dbglevel >= DBG_DEBUG) { if (g_dbglevel >= DBG_DEBUG) {
Dbprintf("Received unknown command (len=%d):", len); Dbprintf("Received unknown command (len=%d):", len);
Dbhexdump(len, receivedCmd, false); Dbhexdump(len, receivedCmd, false);
} }
if ((receivedCmd[0] & 0x10) == 0x10) {
Dbprintf("Warning, reader sent a chained command but we lack support for it. Ignoring command.");
}
// Do not respond // Do not respond
dynamic_response_info.response_n = 0; dynamic_response_info.response_n = 0;
} }