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https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-03-17 18:50:32 +08:00
CHG: bigbuf adaptations
This commit is contained in:
iceman1001
parent
d13541791b
commit
2612cd006a
5 changed files with 51 additions and 39 deletions
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@ -30,8 +30,8 @@ static uint16_t BigBuf_hi = BIGBUF_SIZE;
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static uint8_t *emulator_memory = NULL;
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// trace related variables
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static uint16_t traceLen = 0;
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int tracing = 1; //Last global one.. todo static?
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static uint32_t traceLen = 0;
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static bool tracing = true; //todo static?
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// get the address of BigBuf
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uint8_t *BigBuf_get_addr(void) {
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@ -112,7 +112,7 @@ uint16_t BigBuf_max_traceLen(void) {
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void clear_trace(void) {
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traceLen = 0;
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}
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void set_tracelen(uint16_t value) {
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void set_tracelen(uint32_t value) {
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traceLen = value;
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}
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void set_tracing(bool enable) {
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@ -127,7 +127,7 @@ bool get_tracing(void) {
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* Get the number of bytes traced
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* @return
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*/
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uint16_t BigBuf_get_traceLen(void) {
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uint32_t BigBuf_get_traceLen(void) {
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return traceLen;
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}
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@ -142,8 +142,8 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
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uint8_t *trace = BigBuf_get_addr();
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uint16_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
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uint16_t duration = timestamp_end - timestamp_start;
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uint32_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
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uint32_t duration = timestamp_end - timestamp_start;
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// Return when trace is full
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if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= BigBuf_max_traceLen()) {
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@ -204,7 +204,7 @@ int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwP
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if (!tracing) return false;
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uint8_t *trace = BigBuf_get_addr();
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uint16_t iLen = nbytes(iBits);
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uint32_t iLen = nbytes(iBits);
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// Return when trace is full
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if (traceLen + sizeof(rsamples) + sizeof(dwParity) + sizeof(iBits) + iLen > BigBuf_max_traceLen()) return false;
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@ -36,10 +36,10 @@ extern uint8_t *BigBuf_malloc(uint16_t);
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extern void BigBuf_free(void);
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extern void BigBuf_free_keep_EM(void);
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extern void BigBuf_print_status(void);
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extern uint16_t BigBuf_get_traceLen(void);
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extern uint32_t BigBuf_get_traceLen(void);
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extern void clear_trace(void);
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extern void set_tracing(bool enable);
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extern void set_tracelen(uint16_t value);
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extern void set_tracelen(uint32_t value);
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extern bool get_tracing(void);
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extern bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag);
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extern int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwParity, int bReader);
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@ -34,7 +34,6 @@ extern "C" {
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extern const uint8_t OddByteParity[256];
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extern int rsamples; // = 0;
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extern int tracing; // = TRUE;
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extern uint8_t trigger;
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// This may be used (sparingly) to declare a function to be copied to
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@ -651,7 +651,7 @@ void RAMFUNC SniffIso14443a(uint8_t param) {
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//-----------------------------------------------------------------------------
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static void CodeIso14443aAsTagPar(const uint8_t *cmd, uint16_t len, uint8_t *parity, bool collision) {
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uint8_t localCol = 0;
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//uint8_t localCol = 0;
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ToSendReset();
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// Correction bit, might be removed when not needed
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@ -673,24 +673,32 @@ static void CodeIso14443aAsTagPar(const uint8_t *cmd, uint16_t len, uint8_t *par
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// Data bits
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for(uint16_t j = 0; j < 8; j++) {
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if (collision && (localCol >= colpos)){
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//if (collision && (localCol >= colpos)){
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if (collision) {
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ToSend[++ToSendMax] = SEC_COLL;
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} else if(b & 1) {
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ToSend[++ToSendMax] = SEC_D;
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} else {
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ToSend[++ToSendMax] = SEC_E;
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//localCol++;
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} else {
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if (b & 1) {
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ToSend[++ToSendMax] = SEC_D;
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} else {
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ToSend[++ToSendMax] = SEC_E;
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}
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b >>= 1;
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}
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b >>= 1;
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localCol++;
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}
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// Get the parity bit
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if (parity[i>>3] & (0x80>>(i&0x0007))) {
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ToSend[++ToSendMax] = SEC_D;
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LastProxToAirDuration = 8 * ToSendMax - 4;
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if (collision) {
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ToSend[++ToSendMax] = SEC_COLL;
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LastProxToAirDuration = 8 * ToSendMax;
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} else {
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ToSend[++ToSendMax] = SEC_E;
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LastProxToAirDuration = 8 * ToSendMax;
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// Get the parity bit
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if (parity[i>>3] & (0x80>>(i&0x0007))) {
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ToSend[++ToSendMax] = SEC_D;
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LastProxToAirDuration = 8 * ToSendMax - 4;
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} else {
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ToSend[++ToSendMax] = SEC_E;
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LastProxToAirDuration = 8 * ToSendMax;
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}
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}
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}
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@ -795,12 +803,12 @@ bool prepare_tag_modulation(tag_response_info_t* response_info, size_t max_buffe
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// Make sure we do not exceed the free buffer space
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if (ToSendMax > max_buffer_size) {
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Dbprintf("Out of memory, when modulating bits for tag answer:");
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Dbhexdump(response_info->response_n,response_info->response,false);
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Dbhexdump(response_info->response_n, response_info->response, false);
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return false;
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}
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// Copy the byte array, used for this modulation to the buffer position
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memcpy(response_info->modulation,ToSend,ToSendMax);
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memcpy(response_info->modulation, ToSend, ToSendMax);
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// Store the number of bytes that were used for encoding/modulation and the time needed to transfer them
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response_info->modulation_n = ToSendMax;
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@ -1047,7 +1055,7 @@ void SimulateIso14443aTag(int tagType, int flags, uint8_t* data) {
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// Clean receive command buffer
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if (!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {
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Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
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Dbprintf("Emulator stopped. Trace length: %d ", BigBuf_get_traceLen());
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break;
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}
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p_response = NULL;
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@ -1836,15 +1844,17 @@ void iso14443a_antifuzz(uint32_t flags){
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// allocate buffers:
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uint8_t *received = BigBuf_malloc(MAX_FRAME_SIZE);
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uint8_t *receivedPar = BigBuf_malloc(MAX_PARITY_SIZE);
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uint8_t *resp = BigBuf_malloc(8);
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uint8_t *resp = BigBuf_malloc(20);
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memset(resp, 0xFF , 20);
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LED_A_ON();
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for (;;) {
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WDT_HIT();
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// Clean receive command buffer
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if (!GetIso14443aCommandFromReader(received, receivedPar, &len)) {
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Dbprintf("Anti-fuzz stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
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Dbprintf("Anti-fuzz stopped. Trace length: %d ", BigBuf_get_traceLen());
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break;
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}
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if ( received[0] == ISO14443A_CMD_WUPA || received[0] == ISO14443A_CMD_REQA) {
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@ -1860,21 +1870,24 @@ void iso14443a_antifuzz(uint32_t flags){
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}
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// Received request for UID (cascade 1)
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if (received[1] >= 0x20 && received[1] <= 0x57 && received[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT) {
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resp[0] = 0x04;
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resp[1] = 0x1C;
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resp[2] = 0xE1;
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resp[3] = 0xCE;
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//if (received[1] >= 0x20 && received[1] <= 0x57 && received[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT) {
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if (received[1] >= 0x20 && received[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT) {
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resp[0] = 0xFF;
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resp[1] = 0xFF;
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resp[2] = 0xFF;
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resp[3] = 0xFF;
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resp[4] = resp[0] ^ resp[1] ^ resp[2] ^ resp[3];
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colpos = 0;
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if ( (flags & FLAG_7B_UID_IN_DATA) == FLAG_7B_UID_IN_DATA ) {
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resp[0] = 0x88;
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colpos = 8;
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}
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EmSendCmdEx(resp, 4, true);
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if (MF_DBGLEVEL >= 4) Dbprintf("ANTICOLL or SELECT %x", received[1]);
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EmSendCmdEx(resp, 5, true);
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if (MF_DBGLEVEL >= 4) Dbprintf("ANTICOLL or SELECT %x", received[1]);
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LED_D_INV();
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continue;
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} else if (received[1] == 0x20 && received[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2) { // Received request for UID (cascade 2)
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if (MF_DBGLEVEL >= 4) Dbprintf("ANTICOLL or SELECT_2");
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@ -3489,7 +3502,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
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}
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if (MF_DBGLEVEL >= 1)
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Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
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Dbprintf("Emulator stopped. Trace length: %d ", BigBuf_get_traceLen());
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cmd_send(CMD_ACK,1,0,0,0,0); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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LEDsoff();
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@ -710,7 +710,7 @@ void SimulateIso14443bTag(uint32_t pupi) {
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++cmdsReceived;
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}
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if (MF_DBGLEVEL >= 2)
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Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
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Dbprintf("Emulator stopped. Trace length: %d ", BigBuf_get_traceLen());
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switch_off(); //simulate
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}
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