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iso15693: fix strncat usage (one must specify available room, not total dest buffer size)

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This commit is contained in:
Philippe Teuwen 2019-03-12 19:18:16 +01:00
parent cdf0a56fad
commit 049f41a22f
1 changed files with 16 additions and 16 deletions
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32
armsrc/iso15693.c
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@ -740,50 +740,50 @@ void DbdecodeIso15693Answer(int len, uint8_t *d) {
if (len > 3) {
if (d[0] & (1 << 3))
strncat(status, "ProtExt ", DBD15STATLEN);
strncat(status, "ProtExt ", DBD15STATLEN - strlen(status));
if (d[0] & 1) {
// error
strncat(status, "Error ", DBD15STATLEN);
strncat(status, "Error ", DBD15STATLEN - strlen(status));
switch (d[1]) {
case 0x01:
strncat(status, "01: not supported", DBD15STATLEN);
strncat(status, "01: not supported", DBD15STATLEN - strlen(status));
break;
case 0x02:
strncat(status, "02: not recognized", DBD15STATLEN);
strncat(status, "02: not recognized", DBD15STATLEN - strlen(status));
break;
case 0x03:
strncat(status, "03: opt not supported", DBD15STATLEN);
strncat(status, "03: opt not supported", DBD15STATLEN - strlen(status));
break;
case 0x0f:
strncat(status, "0F: no info", DBD15STATLEN);
strncat(status, "0F: no info", DBD15STATLEN - strlen(status));
break;
case 0x10:
strncat(status, "10: dont exist", DBD15STATLEN);
strncat(status, "10: dont exist", DBD15STATLEN - strlen(status));
break;
case 0x11:
strncat(status, "11: lock again", DBD15STATLEN);
strncat(status, "11: lock again", DBD15STATLEN - strlen(status));
break;
case 0x12:
strncat(status, "12: locked", DBD15STATLEN);
strncat(status, "12: locked", DBD15STATLEN - strlen(status));
break;
case 0x13:
strncat(status, "13: program error", DBD15STATLEN);
strncat(status, "13: program error", DBD15STATLEN - strlen(status));
break;
case 0x14:
strncat(status, "14: lock error", DBD15STATLEN);
strncat(status, "14: lock error", DBD15STATLEN - strlen(status));
break;
default:
strncat(status, "unknown error", DBD15STATLEN);
strncat(status, "unknown error", DBD15STATLEN - strlen(status));
}
strncat(status, " ", DBD15STATLEN);
strncat(status, " ", DBD15STATLEN - strlen(status));
} else {
strncat(status, "No error ", DBD15STATLEN);
strncat(status, "No error ", DBD15STATLEN - strlen(status));
}
if (CheckCrc(d, len))
strncat(status, "[+] crc OK", DBD15STATLEN);
strncat(status, "[+] crc OK", DBD15STATLEN - strlen(status));
else
strncat(status, "[!] crc fail", DBD15STATLEN);
strncat(status, "[!] crc fail", DBD15STATLEN - strlen(status));
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%s", status);
}