RfidResearchGroup/proxmark3
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releasing pressure on stack

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This commit is contained in:
iceman1001 2019-09-23 17:10:43 +02:00
parent 9a0ca9c4cd
commit c36baab3c0
1 changed files with 11 additions and 2 deletions
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13
client/cmddata.c
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@ -518,7 +518,6 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
size_t maxLen = 0;
uint8_t askamp = 0;
char amp = tolower(param_getchar(Cmd, 0));
uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0};
sscanf(Cmd, "%i %i %i %zu %c", &clk, &invert, &maxErr, &maxLen, &amp);
@ -533,12 +532,19 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
invert = 1;
clk = 0;
}
uint8_t *bits = calloc(MAX_GRAPH_TRACE_LEN, sizeof(uint8_t));
if (bits == NULL) {
return PM3_EMALLOC;
}
size_t BitLen = getFromGraphBuf(bits);
PrintAndLogEx(DEBUG, "DEBUG: (ASKDemod_ext) #samples from graphbuff: %d", BitLen);
if (BitLen < 255) return PM3_ESOFT;
if (BitLen < 255) {
free(bits);
return PM3_ESOFT;
}
if (maxLen < BitLen && maxLen != 0) BitLen = maxLen;
@ -572,11 +578,13 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
if (errCnt < 0 || BitLen < 16) { //if fatal error (or -1)
PrintAndLogEx(DEBUG, "DEBUG: (ASKDemod_ext) No data found errors:%d, invert:%c, bitlen:%d, clock:%d", errCnt, (invert) ? 'Y' : 'N', BitLen, clk);
free(bits);
return PM3_ESOFT;
}
if (errCnt > maxErr) {
PrintAndLogEx(DEBUG, "DEBUG: (ASKDemod_ext) Too many errors found, errors:%d, bits:%d, clock:%d", errCnt, BitLen, clk);
free(bits);
return PM3_ESOFT;
}
@ -601,6 +609,7 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
if (emSearch)
AskEm410xDecode(true, &hi, &lo);
free(bits);
return PM3_SUCCESS;
}
int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {