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fix proper null-terminator in filename. Thanks to @metalauricle

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This commit is contained in:
iceman1001 2021-05-02 16:18:02 +02:00
commit 49c764de8c
1 changed files with 2 additions and 1 deletions
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3
armsrc/Standalone/hf_iceclass.c
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@ -163,6 +163,7 @@ static void save_to_flash(uint8_t *data, uint16_t datalen, char *filename) {
rdv40_spiffs_lazy_mount();
char fn[SPIFFS_OBJ_NAME_LEN];
memset(fn, 0, sizeof(fn));
if (filename == NULL) {
sprintf(fn, "iclass-%02X%02X%02X%02X%02X%02X%02X%02X.bin",
@ -170,7 +171,7 @@ static void save_to_flash(uint8_t *data, uint16_t datalen, char *filename) {
data[4], data[5], data[6], data[7]
);
} else {
int fnlen = MIN(strlen(filename), SPIFFS_OBJ_NAME_LEN);
int fnlen = MIN(strlen(filename), SPIFFS_OBJ_NAME_LEN - 1);
// if the given name len longer than buffer allows, cut it down to size
memcpy(fn, filename, fnlen);
}