Fixed several issues found using a coverity-scan

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 9afe0788c666a79ac4ef2f4f9da09a6b70cabed4..9a80a17723b3ca4e6a4f392a21fc4166d5b8a9f2 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -190,8 +190,9 @@ void AppendCrc14443a(uint8_t* data, int len)
 }
 
 // The function LogTrace() is also used by the iClass implementation in iClass.c
 }
 
 // The function LogTrace() is also used by the iClass implementation in iClass.c

-bool RAMFUNC LogTrace(const uint8_t * btBytes, uint8_t iLen, uint32_t timestamp, uint32_t dwParity, bool bReader)
+bool RAMFUNC LogTrace(const uint8_t * btBytes, uint8_t iLen, uint32_t timestamp, uint32_t dwParity, bool readerToTag)

 {
 {

+       if (!tracing) return FALSE;

        // Return when trace is full
        if (traceLen + sizeof(timestamp) + sizeof(dwParity) + iLen >= TRACE_SIZE) {
                tracing = FALSE;        // don't trace any more
        // Return when trace is full
        if (traceLen + sizeof(timestamp) + sizeof(dwParity) + iLen >= TRACE_SIZE) {
                tracing = FALSE;        // don't trace any more


@@ -203,7 +204,8 @@ bool RAMFUNC LogTrace(const uint8_t * btBytes, uint8_t iLen, uint32_t timestamp,
        trace[traceLen++] = ((timestamp >> 8) & 0xff);
        trace[traceLen++] = ((timestamp >> 16) & 0xff);
        trace[traceLen++] = ((timestamp >> 24) & 0xff);
        trace[traceLen++] = ((timestamp >> 8) & 0xff);
        trace[traceLen++] = ((timestamp >> 16) & 0xff);
        trace[traceLen++] = ((timestamp >> 24) & 0xff);

-       if (!bReader) {
+
+       if (!readerToTag) {

                trace[traceLen - 1] |= 0x80;
        }
        trace[traceLen++] = ((dwParity >> 0) & 0xff);
                trace[traceLen - 1] |= 0x80;
        }
        trace[traceLen++] = ((dwParity >> 0) & 0xff);


@@ -505,6 +507,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
        LEDsoff();
        // init trace buffer
        iso14a_clear_trace();
        LEDsoff();
        // init trace buffer
        iso14a_clear_trace();

+       iso14a_set_tracing(TRUE);

 
        // We won't start recording the frames that we acquire until we trigger;
        // a good trigger condition to get started is probably when we see a
 
        // We won't start recording the frames that we acquire until we trigger;
        // a good trigger condition to get started is probably when we see a


@@ -1763,6 +1766,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
 }
 
 void iso14443a_setup(uint8_t fpga_minor_mode) {
 }
 
 void iso14443a_setup(uint8_t fpga_minor_mode) {

+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);

        // Set up the synchronous serial port
        FpgaSetupSsc();
        // connect Demodulated Signal to ADC:
        // Set up the synchronous serial port
        FpgaSetupSsc();
        // connect Demodulated Signal to ADC:


@@ -1858,6 +1862,7 @@ void ReaderIso14443a(UsbCommand *c)
                if(param & ISO14A_APPEND_CRC) {
                        AppendCrc14443a(cmd,len);
                        len += 2;
                if(param & ISO14A_APPEND_CRC) {
                        AppendCrc14443a(cmd,len);
                        len += 2;

+                       if (lenbits) lenbits += 16;

                }
                if(lenbits>0) {
                        ReaderTransmitBitsPar(cmd,lenbits,GetParity(cmd,lenbits/8), NULL);
                }
                if(lenbits>0) {
                        ReaderTransmitBitsPar(cmd,lenbits,GetParity(cmd,lenbits/8), NULL);


@@ -2201,9 +2206,12 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
        if (MF_DBGLEVEL >= 1)   {
                if (!_7BUID) {
 
        if (MF_DBGLEVEL >= 1)   {
                if (!_7BUID) {

-                       Dbprintf("4B UID: %02x%02x%02x%02x",rUIDBCC1[0] , rUIDBCC1[1] , rUIDBCC1[2] , rUIDBCC1[3]);
+                       Dbprintf("4B UID: %02x%02x%02x%02x", 
+                               rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3]);

                } else {
                } else {

-                       Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x",rUIDBCC1[0] , rUIDBCC1[1] , rUIDBCC1[2] , rUIDBCC1[3],rUIDBCC2[0],rUIDBCC2[1] ,rUIDBCC2[2] , rUIDBCC2[3]);
+                       Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x",
+                               rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3],
+                               rUIDBCC2[0], rUIDBCC2[1] ,rUIDBCC2[2], rUIDBCC2[3]);

                }
        }
 
                }
        }
 


@@ -2271,7 +2279,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                // select card
                                if (len == 9 && 
                                                (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {
                                // select card
                                if (len == 9 && 
                                                (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {

-                                       EmSendCmd(_7BUID?rSAK1:rSAK, sizeof(_7BUID?rSAK1:rSAK));
+                                       EmSendCmd(_7BUID?rSAK1:rSAK, _7BUID?sizeof(rSAK1):sizeof(rSAK));

                                        cuid = bytes_to_num(rUIDBCC1, 4);
                                        if (!_7BUID) {
                                                cardSTATE = MFEMUL_WORK;
                                        cuid = bytes_to_num(rUIDBCC1, 4);
                                        if (!_7BUID) {
                                                cardSTATE = MFEMUL_WORK;


@@ -2313,10 +2321,13 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
                                // test if auth OK
                                if (cardRr != prng_successor(nonce, 64)){
 
                                // test if auth OK
                                if (cardRr != prng_successor(nonce, 64)){

-                                       if (MF_DBGLEVEL >= 2)   Dbprintf("AUTH FAILED. cardRr=%08x, succ=%08x",cardRr, prng_successor(nonce, 64));
+                                       if (MF_DBGLEVEL >= 2) Dbprintf("AUTH FAILED for sector %d with key %c. cardRr=%08x, succ=%08x",
+                                                       cardAUTHSC, cardAUTHKEY == 0 ? 'A' : 'B',
+                                                       cardRr, prng_successor(nonce, 64));

                                        // Shouldn't we respond anything here?
                                        // Right now, we don't nack or anything, which causes the
                                        // reader to do a WUPA after a while. /Martin
                                        // Shouldn't we respond anything here?
                                        // Right now, we don't nack or anything, which causes the
                                        // reader to do a WUPA after a while. /Martin

+                                       // -- which is the correct response. /piwi

                                        cardSTATE_TO_IDLE();
                                        LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
                                        LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
                                        cardSTATE_TO_IDLE();
                                        LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
                                        LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);


@@ -2330,7 +2341,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
                                LED_C_ON();
                                cardSTATE = MFEMUL_WORK;
                                EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
                                LED_C_ON();
                                cardSTATE = MFEMUL_WORK;

-                               if (MF_DBGLEVEL >= 4)   Dbprintf("AUTH COMPLETED. sector=%d, key=%d time=%d", cardAUTHSC, cardAUTHKEY, GetTickCount() - authTimer);
+                               if (MF_DBGLEVEL >= 4)   Dbprintf("AUTH COMPLETED for sector %d with key %c. time=%d", 
+                                       cardAUTHSC, cardAUTHKEY == 0 ? 'A' : 'B',
+                                       GetTickCount() - authTimer);

                                break;
                        }
                        case MFEMUL_SELECT2:{
                                break;
                        }
                        case MFEMUL_SELECT2:{


@@ -2388,12 +2401,12 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
 
                                        if (!encrypted_data) { // first authentication
                                        crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
 
                                        if (!encrypted_data) { // first authentication

-                                               if (MF_DBGLEVEL >= 2) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY  );
+                                               if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY  );

 
                                                crypto1_word(pcs, cuid ^ nonce, 0);//Update crypto state
                                                num_to_bytes(nonce, 4, rAUTH_AT); // Send nonce
                                        } else { // nested authentication
 
                                                crypto1_word(pcs, cuid ^ nonce, 0);//Update crypto state
                                                num_to_bytes(nonce, 4, rAUTH_AT); // Send nonce
                                        } else { // nested authentication

-                                               if (MF_DBGLEVEL >= 2) Dbprintf("Reader doing nested authentication for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY );
+                                               if (MF_DBGLEVEL >= 4) Dbprintf("Reader doing nested authentication for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY );

                                                ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0); 
                                                num_to_bytes(ans, 4, rAUTH_AT);
                                        }
                                                ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0); 
                                                num_to_bytes(ans, 4, rAUTH_AT);
                                        }


@@ -2424,9 +2437,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
                                if(receivedCmd[0] == 0x30 // read block
                                                || receivedCmd[0] == 0xA0 // write block
 
                                if(receivedCmd[0] == 0x30 // read block
                                                || receivedCmd[0] == 0xA0 // write block

-                                               || receivedCmd[0] == 0xC0
-                                               || receivedCmd[0] == 0xC1
-                                               || receivedCmd[0] == 0xC2 // inc dec restore
+                                               || receivedCmd[0] == 0xC0 // inc
+                                               || receivedCmd[0] == 0xC1 // dec
+                                               || receivedCmd[0] == 0xC2 // restore

                                                || receivedCmd[0] == 0xB0) { // transfer
                                        if (receivedCmd[1] >= 16 * 4) {
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
                                                || receivedCmd[0] == 0xB0) { // transfer
                                        if (receivedCmd[1] >= 16 * 4) {
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));


@@ -2442,7 +2455,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                }
                                // read block
                                if (receivedCmd[0] == 0x30) {
                                }
                                // read block
                                if (receivedCmd[0] == 0x30) {

-                                       if (MF_DBGLEVEL >= 2) {
+                                       if (MF_DBGLEVEL >= 4) {

                                                Dbprintf("Reader reading block %d (0x%02x)",receivedCmd[1],receivedCmd[1]);
                                        }
                                        emlGetMem(response, receivedCmd[1], 1);
                                                Dbprintf("Reader reading block %d (0x%02x)",receivedCmd[1],receivedCmd[1]);
                                        }
                                        emlGetMem(response, receivedCmd[1], 1);


@@ -2458,7 +2471,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                }
                                // write block
                                if (receivedCmd[0] == 0xA0) {
                                }
                                // write block
                                if (receivedCmd[0] == 0xA0) {

-                                       if (MF_DBGLEVEL >= 2) Dbprintf("RECV 0xA0 write block %d (%02x)",receivedCmd[1],receivedCmd[1]);
+                                       if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0xA0 write block %d (%02x)",receivedCmd[1],receivedCmd[1]);

                                        EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
                                        cardSTATE = MFEMUL_WRITEBL2;
                                        cardWRBL = receivedCmd[1];
                                        EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
                                        cardSTATE = MFEMUL_WRITEBL2;
                                        cardWRBL = receivedCmd[1];


@@ -2466,7 +2479,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                }
                                // increment, decrement, restore
                                if (receivedCmd[0] == 0xC0 || receivedCmd[0] == 0xC1 || receivedCmd[0] == 0xC2) {
                                }
                                // increment, decrement, restore
                                if (receivedCmd[0] == 0xC0 || receivedCmd[0] == 0xC1 || receivedCmd[0] == 0xC2) {

-                                       if (MF_DBGLEVEL >= 2) Dbprintf("RECV 0x%02x inc(0xC1)/dec(0xC0)/restore(0xC2) block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]);
+                                       if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0x%02x inc(0xC1)/dec(0xC0)/restore(0xC2) block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]);

                                        if (emlCheckValBl(receivedCmd[1])) {
                                                if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate on block, but emlCheckValBl failed, nacking");
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
                                        if (emlCheckValBl(receivedCmd[1])) {
                                                if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate on block, but emlCheckValBl failed, nacking");
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));


@@ -2484,7 +2497,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                }
                                // transfer
                                if (receivedCmd[0] == 0xB0) {
                                }
                                // transfer
                                if (receivedCmd[0] == 0xB0) {

-                                       if (MF_DBGLEVEL >= 2) Dbprintf("RECV 0x%02x transfer block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]);
+                                       if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0x%02x transfer block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]);

                                        if (emlSetValBl(cardINTREG, cardINTBLOCK, receivedCmd[1]))
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
                                        else
                                        if (emlSetValBl(cardINTREG, cardINTBLOCK, receivedCmd[1]))
                                                EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
                                        else


@@ -2619,7 +2632,8 @@ void RAMFUNC SniffMifare(uint8_t param) {
        // C(red) A(yellow) B(green)
        LEDsoff();
        // init trace buffer
        // C(red) A(yellow) B(green)
        LEDsoff();
        // init trace buffer

-    iso14a_clear_trace();
+       iso14a_clear_trace();
+       iso14a_set_tracing(TRUE);

 
        // The command (reader -> tag) that we're receiving.
        // The length of a received command will in most cases be no more than 18 bytes.
 
        // The command (reader -> tag) that we're receiving.
        // The length of a received command will in most cases be no more than 18 bytes.