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free some stack

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iceman1001 2019-09-25 22:10:59 +02:00
commit 30d565f76c
1 changed files with 11 additions and 1 deletions
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12
client/cmdlfawid.c
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@ -191,10 +191,17 @@ static int CmdAWIDWatch(const char *Cmd) {
//print full AWID Prox ID and some bit format details if found //print full AWID Prox ID and some bit format details if found
static int CmdAWIDDemod(const char *Cmd) { static int CmdAWIDDemod(const char *Cmd) {
(void)Cmd; // Cmd is not used so far (void)Cmd; // Cmd is not used so far
uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0};
uint8_t *bits = calloc(MAX_GRAPH_TRACE_LEN, sizeof(uint8_t));
if (bits == NULL) {
PrintAndLogEx(DEBUG, "DEBUG: Error - AWID failed to allocate memory");
return PM3_EMALLOC;
}
size_t size = getFromGraphBuf(bits); size_t size = getFromGraphBuf(bits);
if (size == 0) { if (size == 0) {
PrintAndLogEx(DEBUG, "DEBUG: Error - AWID not enough samples"); PrintAndLogEx(DEBUG, "DEBUG: Error - AWID not enough samples");
free(bits);
return PM3_ENODATA; return PM3_ENODATA;
} }
//get binary from fsk wave //get binary from fsk wave
@ -215,6 +222,7 @@ static int CmdAWIDDemod(const char *Cmd) {
else else
PrintAndLogEx(DEBUG, "DEBUG: Error - AWID error demoding fsk %d", idx); PrintAndLogEx(DEBUG, "DEBUG: Error - AWID error demoding fsk %d", idx);
free(bits);
return PM3_ESOFT; return PM3_ESOFT;
} }
@ -243,6 +251,7 @@ static int CmdAWIDDemod(const char *Cmd) {
size = removeParity(bits, idx + 8, 4, 1, 88); size = removeParity(bits, idx + 8, 4, 1, 88);
if (size != 66) { if (size != 66) {
PrintAndLogEx(DEBUG, "DEBUG: Error - AWID at parity check-tag size does not match AWID format"); PrintAndLogEx(DEBUG, "DEBUG: Error - AWID at parity check-tag size does not match AWID format");
free(bits);
return PM3_ESOFT; return PM3_ESOFT;
} }
// ok valid card found! // ok valid card found!
@ -312,6 +321,7 @@ static int CmdAWIDDemod(const char *Cmd) {
} }
break; break;
} }
free(bits);
PrintAndLogEx(DEBUG, "DEBUG: AWID idx: %d, Len: %d Printing Demod Buffer:", idx, size); PrintAndLogEx(DEBUG, "DEBUG: AWID idx: %d, Len: %d Printing Demod Buffer:", idx, size);
if (g_debugMode) if (g_debugMode)