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fix: 'hf iclass sim' - too small buffers caused sim to fail

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This commit is contained in:
iceman1001 2018-02-01 09:31:30 +01:00
commit 721ba5d287
1 changed files with 16 additions and 11 deletions
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27
armsrc/iclass.c
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@ -1293,22 +1293,22 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
// CSN
// 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte)
uint8_t *resp_csn = BigBuf_malloc(30);
uint8_t *resp_csn = BigBuf_malloc(28);
int resp_csn_len;
// configuration picopass 2ks
uint8_t *resp_conf = BigBuf_malloc(20);
uint8_t *resp_conf = BigBuf_malloc(28);
int resp_conf_len;
uint8_t conf_data[10] = {0x12,0xFF,0xFF,0xFF,0x7F,0x1F,0xFF,0x3C,0x00,0x00};
ComputeCrc14443(CRC_ICLASS, conf_data, 8, &conf_data[8], &conf_data[9]);
// e-Purse
// 18: Takes 2 bytes for SOF/EOF and 8 * 2 = 16 bytes (2 bytes/bit)
uint8_t *resp_cc = BigBuf_malloc(20);
uint8_t *resp_cc = BigBuf_malloc(28);
int resp_cc_len;
// Application Issuer Area
uint8_t *resp_aia = BigBuf_malloc(20);
uint8_t *resp_aia = BigBuf_malloc(28);
int resp_aia_len;
uint8_t aia_data[10] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00};
ComputeCrc14443(CRC_ICLASS, aia_data, 8, &aia_data[8], &aia_data[9]);
@ -1377,7 +1377,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
uint8_t *data_response = BigBuf_malloc( (8+2) * 2 + 2);
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
SpinDelay(100);
StartCountSspClk();
// To control where we are in the protocol
@ -1414,29 +1414,34 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
trace_data_size = sizeof(sof_data);
// adjusted for 330 + (160*num of slot)
response_delay = 330 + 160 * 1;
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // 0x0C
// Reader asks for anticollission CSN
modulated_response = resp_anticoll; modulated_response_size = resp_anticoll_len; //order = 2;
trace_data = anticoll_data;
trace_data_size = sizeof(anticoll_data);
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_SELECT) { // 0x81
// Reader selects anticollission CSN.
// Tag sends the corresponding real CSN
modulated_response = resp_csn; modulated_response_size = resp_csn_len; //order = 3;
trace_data = csn_data;
trace_data_size = sizeof(csn_data);
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_READCHECK_KD) { // 0x88
// Read e-purse (88 02)
modulated_response = resp_cc; modulated_response_size = resp_cc_len; //order = 4;
trace_data = card_challenge_data;
trace_data_size = sizeof(card_challenge_data);
LED_B_ON();
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_READCHECK_KC) { // 0x18
// Read e-purse (18 02)
modulated_response = resp_cc; modulated_response_size = resp_cc_len; //order = 4;
trace_data = card_challenge_data;
trace_data_size = sizeof(card_challenge_data);
LED_B_ON();
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_CHECK) { // 0x05
// Reader random and reader MAC!!!
if (simulationMode == MODE_FULLSIM) {
@ -1472,12 +1477,13 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
exitLoop = true;
}
}
goto send;
} else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {
// Reader ends the session
modulated_response = resp_sof; modulated_response_size = 0; //order = 0;
trace_data = NULL;
trace_data_size = 0;
goto send;
// sim 2 / 4,
} else if (simulationMode == MODE_EXIT_AFTER_MAC && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){ // 0x0C
// block0,1,2,5 is always readable.
@ -1505,7 +1511,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
break;
default: break;
}
goto send;
} else if (simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){ // 0x0C
//Read block
uint16_t blk = receivedCmd[1];
@ -1519,6 +1525,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
modulated_response_size = ToSendMax;
goto send;
} else if (simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_UPDATE) {
//Probably the reader wants to update the nonce. Let's just ignore that for now.
@ -1538,7 +1545,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
modulated_response = data_response;
modulated_response_size = ToSendMax;
response_delay = 4600 * 1.5; // tPROG 4-15ms
goto send;
// } else if(receivedCmd[0] == ICLASS_CMD_PAGESEL) { // 0x84
//Pagesel
//Pagesel enables to select a page in the selected chip memory and return its configuration block
@ -1559,6 +1566,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
trace_data_size = 0;
}
send:
/**
A legit tag has about 330us delay between reader EOT and tag SOF.
**/
@ -1594,9 +1602,6 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, uint16_t delay) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K_8BIT);
AT91C_BASE_SSC->SSC_THR = 0x00;
// SpinDelayUs(delay); // So, first make sure we timeout previous comms.
while (!BUTTON_PRESS()) {
if ( (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)){
b = AT91C_BASE_SSC->SSC_RHR; (void) b;