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FIX: if receiving array isnt large enough, previously this will smash the stack..

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iceman1001 2017-12-02 20:45:53 +01:00
commit b89b3399dc
6 changed files with 57 additions and 26 deletions
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7
client/mifarehost.c
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@ -540,6 +540,7 @@ int loadTraceCard(uint8_t *tuid, uint8_t uidlen) {
char buf[64] = {0x00};
uint8_t buf8[64] = {0x00};
int i, blockNum;
uint32_t tmp;
if (!isTraceCardEmpty())
saveTraceCard();
@ -573,8 +574,10 @@ int loadTraceCard(uint8_t *tuid, uint8_t uidlen) {
}
return 2;
}
for (i = 0; i < 32; i += 2)
sscanf(&buf[i], "%02X", (unsigned int *)&buf8[i / 2]);
for (i = 0; i < 32; i += 2) {
sscanf(&buf[i], "%02X", &tmp);
buf8[i / 2] = tmp & 0xFF;
}
memcpy(traceCard + blockNum * 16, buf8, 16);