FIX: Some uninitialized variables, some syntax suger, and some extra WDT_HIT calls...

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index bfd7069b4f463801f75221aebcb3ad8eaa4955b6..8a925475e1869356120ed7949a20708601f6c3f7 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1464,7 +1464,6 @@ void PrepareDelayedTransfer(uint16_t delay)
 //-------------------------------------------------------------------------------------
 static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing)
 {
-       
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 
        uint32_t ThisTransferTime = 0;
@@ -1492,9 +1491,8 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
                        AT91C_BASE_SSC->SSC_THR = cmd[c];
                        c++;
-                       if(c >= len) {
+                       if(c >= len)
                                break;
-                       }
                }
        }
        
@@ -1508,7 +1506,7 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
 void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity)
 {
        int i, j;
-       int last;
+       int last = 0;
        uint8_t b;
 
        ToSendReset();
@@ -1516,7 +1514,6 @@ void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8
        // Start of Communication (Seq. Z)
        ToSend[++ToSendMax] = SEC_Z;
        LastProxToAirDuration = 8 * (ToSendMax+1) - 6;
-       last = 0;
 
        size_t bytecount = nbytes(bits);
        // Generate send structure for the data bits
@@ -1729,7 +1726,7 @@ int EmSend4bitEx(uint8_t resp, bool correctionNeeded){
        Code4bitAnswerAsTag(resp);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:
-       uint8_t par[1];
+       uint8_t par[1] = {0x00};
        GetParity(&resp, 1, par);
        EmLogTrace(Uart.output, 
                                Uart.len, 
@@ -1766,13 +1763,13 @@ int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8
 }
 
 int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded){
-       uint8_t par[MAX_PARITY_SIZE];
+       uint8_t par[MAX_PARITY_SIZE] = {0x00};
        GetParity(resp, respLen, par);
        return EmSendCmdExPar(resp, respLen, correctionNeeded, par);
 }
 
 int EmSendCmd(uint8_t *resp, uint16_t respLen){
-       uint8_t par[MAX_PARITY_SIZE];
+       uint8_t par[MAX_PARITY_SIZE] = {0x00};
        GetParity(resp, respLen, par);
        return EmSendCmdExPar(resp, respLen, false, par);
 }
@@ -1793,9 +1790,12 @@ bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_Start
                uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;
                reader_EndTime = tag_StartTime - exact_fdt;
                reader_StartTime = reader_EndTime - reader_modlen;
-               if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE)) {
+               
+               if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE))
                        return FALSE;
-               } else return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE));
+               else 
+                       return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE));
+               
        } else {
                return TRUE;
        }
@@ -1847,9 +1847,8 @@ void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t
                LED_A_ON();
   
        // Log reader command in trace buffer
-       if (tracing) {
+       if (tracing)
                LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE);
-       }
 }
 
 void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)
@@ -1860,7 +1859,7 @@ void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *tim
 void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)
 {
   // Generate parity and redirect
-  uint8_t par[MAX_PARITY_SIZE];
+  uint8_t par[MAX_PARITY_SIZE] = {0x00};
   GetParity(frame, len/8, par);
   ReaderTransmitBitsPar(frame, len, par, timing);
 }
@@ -1868,26 +1867,30 @@ void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)
 void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)
 {
   // Generate parity and redirect
-  uint8_t par[MAX_PARITY_SIZE];
+  uint8_t par[MAX_PARITY_SIZE] = {0x00};
   GetParity(frame, len, par);
   ReaderTransmitBitsPar(frame, len*8, par, timing);
 }
 
 int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity)
 {
-       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return FALSE;
-       if (tracing) {
+       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) 
+               return FALSE;
+
+       if (tracing)
                LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);
-       }
+
        return Demod.len;
 }
 
 int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity)
 {
-       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return FALSE;
-       if (tracing) {
+       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) 
+               return FALSE;
+
+       if (tracing)
                LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);
-       }
+
        return Demod.len;
 }
 
@@ -2254,7 +2257,7 @@ void ReaderMifare(bool first_try)
        static byte_t par_low = 0;
        bool led_on = TRUE;
        uint8_t uid[10] = {0};
-       uint32_t cuid;
+       uint32_t cuid = 0;
 
        uint32_t nt = 0;
        uint32_t previous_nt = 0;
@@ -2267,7 +2270,7 @@ void ReaderMifare(bool first_try)
        static int32_t sync_cycles = 0;
        int catch_up_cycles = 0;
        int last_catch_up = 0;
-       uint16_t elapsed_prng_sequences;
+       uint16_t elapsed_prng_sequences = 0;
        uint16_t consecutive_resyncs = 0;
        int isOK = 0;
 
@@ -2299,8 +2302,8 @@ void ReaderMifare(bool first_try)
        int16_t debug_info_nr = -1;
        uint16_t strategy = 0;
        int32_t debug_info[MAX_STRATEGY][NUM_DEBUG_INFOS];
-       uint32_t select_time;
-       uint32_t halt_time;
+       uint32_t select_time = 0;
+       uint32_t halt_time = 0;
   
        for(uint16_t i = 0; TRUE; ++i) {
                
@@ -2328,6 +2331,7 @@ void ReaderMifare(bool first_try)
                        SpinDelay(200);
                        iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
                        SpinDelay(100);
+                       WDT_HIT();
                }
                
                if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
@@ -2345,10 +2349,11 @@ void ReaderMifare(bool first_try)
                        while(GetCountSspClk() > sync_time) {
                                elapsed_prng_sequences++;
                                sync_time = (sync_time & 0xfffffff8) + sync_cycles;
-                       }
+                       }                       
 
                        // Transmit MIFARE_CLASSIC_AUTH at synctime. Should result in returning the same tag nonce (== nt_attacked) 
                        ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);
+                       
                } else {
                        // collect some information on tag nonces for debugging:
                        #define DEBUG_FIXED_SYNC_CYCLES PRNG_SEQUENCE_LENGTH
@@ -2473,7 +2478,7 @@ void ReaderMifare(bool first_try)
                } else {
                        if (nt_diff == 0 && first_try) {
                                par[0]++;
-                               if (par[0] == 0x00) {           // tried all 256 possible parities without success. Card doesn't send NACK.
+                               if (par[0] == 0x00) {   // tried all 256 possible parities without success. Card doesn't send NACK.
                                        isOK = -2;
                                        break;
                                }
@@ -2483,9 +2488,10 @@ void ReaderMifare(bool first_try)
                }
        }
 
-
        mf_nr_ar[3] &= 0x1F;
-       
+
+       WDT_HIT();
+               
        if (isOK == -4) {
                if (MF_DBGLEVEL >= 3) {
                        for (uint16_t i = 0; i <= MAX_STRATEGY; ++i) {
@@ -2544,10 +2550,10 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
        struct Crypto1State *pcs;
        pcs = &mpcs;
        uint32_t numReads = 0;//Counts numer of times reader read a block
-       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE];
-       uint8_t receivedCmd_par[MAX_MIFARE_PARITY_SIZE];
-       uint8_t response[MAX_MIFARE_FRAME_SIZE];
-       uint8_t response_par[MAX_MIFARE_PARITY_SIZE];
+       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE] = {0x00};
+       uint8_t receivedCmd_par[MAX_MIFARE_PARITY_SIZE] = {0x00};
+       uint8_t response[MAX_MIFARE_FRAME_SIZE] = {0x00};
+       uint8_t response_par[MAX_MIFARE_PARITY_SIZE] = {0x00};
        
        uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID
        uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index a00c5a8b92b1733362a75bcf6e4886878f357edd..0443c1f1c3c3da625deb24a77552b88d183fa011 100644 (file)
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -750,7 +750,7 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
        uint16_t davg = 0;\r
        static uint16_t dmin, dmax;\r
        uint8_t uid[10] = {0x00};\r
-       uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;\r
+       uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;\r
        uint8_t par[1] = {0x00};\r
        uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};\r
        \r
@@ -759,7 +759,7 @@ void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *dat
        struct Crypto1State mpcs = {0, 0};\r
        struct Crypto1State *pcs;\r
        pcs = &mpcs;\r
-       uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
+       uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r
 \r
        uint32_t auth1_time, auth2_time;\r
        static uint16_t delta_time;\r