flipperzero-firmware/applications/main/nfc/scenes/nfc_scene_mf_classic_data.c
Liam Hays 663eb6cd6d
Display Mifare Classic data in NFC app (#2389)
* Add data display for Mifare Classic cards.
* Clean up log statements and data display.

Co-authored-by: あく <alleteam@gmail.com>
2023-02-21 16:15:48 +09:00

107 lines
4.2 KiB
C

#include "../nfc_i.h"
void nfc_scene_mf_classic_data_on_enter(void* context) {
Nfc* nfc = context;
MfClassicType type = nfc->dev->dev_data.mf_classic_data.type;
MfClassicData* data = &nfc->dev->dev_data.mf_classic_data;
TextBox* text_box = nfc->text_box;
text_box_set_font(text_box, TextBoxFontHex);
int card_blocks = 0;
if(type == MfClassicType1k) {
card_blocks = MF_CLASSIC_1K_TOTAL_SECTORS_NUM * 4;
} else if(type == MfClassicType4k) {
// 16 sectors of 4 blocks each plus 8 sectors of 16 blocks each
card_blocks = MF_CLASSIC_1K_TOTAL_SECTORS_NUM * 4 + 8 * 16;
} else if(type == MfClassicTypeMini) {
card_blocks = MF_MINI_TOTAL_SECTORS_NUM * 4;
}
int bytes_written = 0;
for(int block_num = 0; block_num < card_blocks; block_num++) {
bool is_sec_trailer = mf_classic_is_sector_trailer(block_num);
if(is_sec_trailer) {
uint8_t sector_num = mf_classic_get_sector_by_block(block_num);
MfClassicSectorTrailer* sec_tr =
mf_classic_get_sector_trailer_by_sector(data, sector_num);
// Key A
for(size_t i = 0; i < sizeof(sec_tr->key_a); i += 2) {
if((bytes_written % 8 == 0) && (bytes_written != 0)) {
furi_string_push_back(nfc->text_box_store, '\n');
}
if(mf_classic_is_key_found(data, sector_num, MfClassicKeyA)) {
furi_string_cat_printf(
nfc->text_box_store, "%02X%02X ", sec_tr->key_a[i], sec_tr->key_a[i + 1]);
} else {
furi_string_cat_printf(nfc->text_box_store, "???? ");
}
bytes_written += 2;
}
// Access bytes
for(size_t i = 0; i < MF_CLASSIC_ACCESS_BYTES_SIZE; i += 2) {
if((bytes_written % 8 == 0) && (bytes_written != 0)) {
furi_string_push_back(nfc->text_box_store, '\n');
}
if(mf_classic_is_block_read(data, block_num)) {
furi_string_cat_printf(
nfc->text_box_store,
"%02X%02X ",
sec_tr->access_bits[i],
sec_tr->access_bits[i + 1]);
} else {
furi_string_cat_printf(nfc->text_box_store, "???? ");
}
bytes_written += 2;
}
// Key B
for(size_t i = 0; i < sizeof(sec_tr->key_b); i += 2) {
if((bytes_written % 8 == 0) && (bytes_written != 0)) {
furi_string_push_back(nfc->text_box_store, '\n');
}
if(mf_classic_is_key_found(data, sector_num, MfClassicKeyB)) {
furi_string_cat_printf(
nfc->text_box_store, "%02X%02X ", sec_tr->key_b[i], sec_tr->key_b[i + 1]);
} else {
furi_string_cat_printf(nfc->text_box_store, "???? ");
}
bytes_written += 2;
}
} else {
// Write data block
for(size_t i = 0; i < MF_CLASSIC_BLOCK_SIZE; i += 2) {
if((bytes_written % 8 == 0) && (bytes_written != 0)) {
furi_string_push_back(nfc->text_box_store, '\n');
}
if(mf_classic_is_block_read(data, block_num)) {
furi_string_cat_printf(
nfc->text_box_store,
"%02X%02X ",
data->block[block_num].value[i],
data->block[block_num].value[i + 1]);
} else {
furi_string_cat_printf(nfc->text_box_store, "???? ");
}
bytes_written += 2;
}
}
}
text_box_set_text(text_box, furi_string_get_cstr(nfc->text_box_store));
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewTextBox);
}
bool nfc_scene_mf_classic_data_on_event(void* context, SceneManagerEvent event) {
UNUSED(context);
UNUSED(event);
return false;
}
void nfc_scene_mf_classic_data_on_exit(void* context) {
Nfc* nfc = context;
// Clean view
text_box_reset(nfc->text_box);
furi_string_reset(nfc->text_box_store);
}