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added initial test to emulate memory of mf ul tag

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This commit is contained in:
roel@libnfc.org 2013-03-28 14:02:00 +00:00
parent 5191b3d10b
commit 28afbd2bee
3 changed files with 25 additions and 10 deletions
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2
armsrc/appmain.c
View file

@ -765,7 +765,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
ReaderIso14443a(c);
break;
case CMD_SIMULATE_TAG_ISO_14443a:
SimulateIso14443aTag(c->arg[0], c->arg[1], c->arg[2]); // ## Simulate iso14443a tag - pass tag type & UID
SimulateIso14443aTag(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); // ## Simulate iso14443a tag - pass tag type & UID
break;
case CMD_EPA_PACE_COLLECT_NONCE:
EPA_PACE_Collect_Nonce(c);

2
armsrc/apps.h
View file

@ -142,7 +142,7 @@ void RAMFUNC SnoopIso14443(void);
/// iso14443a.h
void RAMFUNC SnoopIso14443a(uint8_t param);
void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd); // ## simulate iso14443a tag
void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data);
void ReaderIso14443a(UsbCommand * c);
// Also used in iclass.c
int RAMFUNC LogTrace(const uint8_t * btBytes, int iLen, int iSamples, uint32_t dwParity, int bReader);

31
armsrc/iso14443a.c
View file

@ -898,13 +898,21 @@ static int GetIso14443aCommandFromReader(uint8_t *received, int *len, int maxLen
}
}
}
static int EmSendCmd14443aRaw(uint8_t *resp, int respLen, int correctionNeeded);
int EmSend4bitEx(uint8_t resp, int correctionNeeded);
int EmSend4bit(uint8_t resp);
int EmSendCmdExPar(uint8_t *resp, int respLen, int correctionNeeded, uint32_t par);
int EmSendCmdExPar(uint8_t *resp, int respLen, int correctionNeeded, uint32_t par);
int EmSendCmdEx(uint8_t *resp, int respLen, int correctionNeeded);
int EmSendCmd(uint8_t *resp, int respLen);
int EmSendCmdPar(uint8_t *resp, int respLen, uint32_t par);
//-----------------------------------------------------------------------------
// Main loop of simulated tag: receive commands from reader, decide what
// response to send, and send it.
//-----------------------------------------------------------------------------
void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
{
// Enable and clear the trace
tracing = TRUE;
@ -1024,7 +1032,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
// Response to a read request - not implemented atm
uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*4));
int resp4Len;
// int resp4Len;
// Authenticate response - nonce
uint8_t *resp5 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*5));
@ -1048,7 +1056,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
int cmdsRecvd = 0;
uint8_t* respdata = NULL;
int respsize = 0;
uint8_t nack = 0x04;
// uint8_t nack = 0x04;
memset(receivedCmd, 0x44, RECV_CMD_SIZE);
@ -1077,7 +1085,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
// Strange answer is an example of rare message size (3 bits)
CodeStrangeAnswerAsTag();
memcpy(resp4, ToSend, ToSendMax); resp4Len = ToSendMax;
memcpy(resp4, ToSend, ToSendMax);// resp4Len = ToSendMax;
// Authentication answer (random nonce)
CodeIso14443aAsTag(response5, sizeof(response5));
@ -1100,6 +1108,11 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
DbpString("button press");
break;
}
if (tracing) {
LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE);
}
// doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated
// Okay, look at the command now.
lastorder = order;
@ -1128,10 +1141,13 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
respdata = response3a;
respsize = sizeof(response3a);
} else if(receivedCmd[0] == 0x30) { // Received a (plain) READ
resp = resp4; respLen = resp4Len; order = 4; // Do nothing
// resp = resp4; respLen = resp4Len; order = 4; // Do nothing
// respdata = &nack;
// respsize = sizeof(nack); // 4-bit answer
EmSendCmdEx(data+(4*receivedCmd[0]),16,false);
Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]);
respdata = &nack;
respsize = sizeof(nack); // 4-bit answer
// We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below
respLen = 0;
} else if(receivedCmd[0] == 0x50) { // Received a HALT
// DbpString("Reader requested we HALT!:");
// Do not respond
@ -1186,7 +1202,6 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
}
if (tracing) {
LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE);
if (respdata != NULL) {
LogTrace(respdata,respsize, 0, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
}