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NTAG tags refer to their only counter by index 2.

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This commit is contained in:
turbocool3r
2024-07-09 21:05:11 +03:00
parent a52bb989e9
commit dd42e7e7dd
1 changed files with 6 additions and 1 deletions
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firmware/application/src/rfid/nfctag/hf/nfc_mf0_ntag.c
+6 -1
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@@ -398,6 +398,8 @@ static int get_user_data_end_by_tag_type(tag_specific_type_t type) {
uint8_t *nfc_tag_mf0_ntag_get_counter_data_by_index(uint8_t index) {
uint8_t ctr_page_off;
uint8_t ctr_page_end;
uint8_t first_index = 0; // NTAG cards have one counter that is at address 2 so we have to adjust logic
switch (m_tag_type) {
case TAG_TYPE_MF0UL11:
ctr_page_off = MF0UL11_PAGES;
@@ -410,21 +412,24 @@ uint8_t *nfc_tag_mf0_ntag_get_counter_data_by_index(uint8_t index) {
case TAG_TYPE_NTAG_213:
ctr_page_off = NTAG213_PAGES;
ctr_page_end = ctr_page_off + NTAG_NUM_CTRS;
first_index = 2;
break;
case TAG_TYPE_NTAG_215:
ctr_page_off = NTAG215_PAGES;
ctr_page_end = ctr_page_off + NTAG_NUM_CTRS;
first_index = 2;
break;
case TAG_TYPE_NTAG_216:
ctr_page_off = NTAG216_PAGES;
ctr_page_end = ctr_page_off + NTAG_NUM_CTRS;
first_index = 2;
break;
default:
return NULL;
}
// check that counter index is in bounds
if (index >= (ctr_page_end - ctr_page_off)) return NULL;
if ((index < first_index) || ((index - first_index) >= (ctr_page_end - ctr_page_off))) return NULL;
return m_tag_information->memory[ctr_page_off + index];
}