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no need to differentiate routines

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Unknown 2020-06-27 16:17:15 +02:00
parent 6921e57fb8
commit c8fcaea8ab
1 changed files with 25 additions and 49 deletions
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74
utils/nfc-mfclassic.c
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@ -438,55 +438,12 @@ write_card(bool write_block_zero)
} }
printf("Writing %d blocks |", uiBlocks + write_block_zero); printf("Writing %d blocks |", uiBlocks + write_block_zero);
//Write Block 0 if requested to do so // Completely write the card, but skipping block 0 if we don't need to write on it
if (write_block_zero) { for (uiBlock = 0; uiBlock <= uiBlocks; uiBlock++) {
uiBlock = 0; //Determine if we have to write block 0
is_first_block(0); if (!write_block_zero && uiBlock == 0) {
continue;
fflush(stdout);
// Try to authenticate for the current sector
// If we are are writing to a chinese magic card, we've already unlocked
// If we're writing to a One Time Write, we need to authenticate
// If we're writing something else, we'll need to authenticate
if ((write_block_zero && (magic2 || magic3)) || !write_block_zero) {
if (!authenticate(0) && !bTolerateFailures) {
printf("!\nError: authentication failed for block 00\n");
return false;
} }
}
// Try to write the data block
memcpy(mp.mpd.abtData, mtDump.amb[uiBlock].mbd.abtData, sizeof(mp.mpd.abtData));
// do not write a block 0 with incorrect BCC - card will be made invalid!
if ((mp.mpd.abtData[0] ^ mp.mpd.abtData[1] ^ mp.mpd.abtData[2] ^ mp.mpd.abtData[3] ^ mp.mpd.abtData[4]) != 0x00 && !magic2) {
printf("!\nError: incorrect BCC in MFD file!\n");
printf("Expecting BCC=%02X\n", mp.mpd.abtData[0] ^ mp.mpd.abtData[1] ^ mp.mpd.abtData[2] ^ mp.mpd.abtData[3]);
return false;
}
if (!nfc_initiator_mifare_cmd(pnd, MC_WRITE, uiBlock, &mp)) {
bFailure = true;
printf("Failure to write to data block 0\n");
}
// Show if the write went well for block 0
print_success_or_failure(bFailure, &uiWriteBlocks);
if ((!bTolerateFailures) && bFailure)
return false;
}
if (magic2 || magic3) {
if (nfc_initiator_init(pnd) < 0) {
nfc_perror(pnd, "nfc_initiator_init");
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
};
if (nfc_initiator_select_passive_target(pnd, nmMifare, NULL, 0, &nt) <= 0) {
printf("!\nError: tag was removed\n");
return false;
}
}
// Completely write the card, but skipping block 0
for (uiBlock = 1; uiBlock <= uiBlocks; uiBlock++) {
// Authenticate everytime we reach the first sector of a new block // Authenticate everytime we reach the first sector of a new block
if (uiBlock == 1 || is_first_block(uiBlock)) { if (uiBlock == 1 || is_first_block(uiBlock)) {
if (bFailure) { if (bFailure) {
@ -539,11 +496,30 @@ write_card(bool write_block_zero)
memset(mp.mpd.abtData, 0x00, sizeof(mp.mpd.abtData)); memset(mp.mpd.abtData, 0x00, sizeof(mp.mpd.abtData));
else else
memcpy(mp.mpd.abtData, mtDump.amb[uiBlock].mbd.abtData, sizeof(mp.mpd.abtData)); memcpy(mp.mpd.abtData, mtDump.amb[uiBlock].mbd.abtData, sizeof(mp.mpd.abtData));
// do not write a block 0 with incorrect BCC - card will be made invalid!
if (uiBlock == 0) {
if ((mp.mpd.abtData[0] ^ mp.mpd.abtData[1] ^ mp.mpd.abtData[2] ^ mp.mpd.abtData[3] ^ mp.mpd.abtData[4]) != 0x00) {
printf("!\nError: incorrect BCC in MFD file!\n");
printf("Expecting BCC=%02X\n", mp.mpd.abtData[0] ^ mp.mpd.abtData[1] ^ mp.mpd.abtData[2] ^ mp.mpd.abtData[3]);
return false;
}
}
if (!nfc_initiator_mifare_cmd(pnd, MC_WRITE, uiBlock, &mp)) { if (!nfc_initiator_mifare_cmd(pnd, MC_WRITE, uiBlock, &mp)) {
bFailure = true; bFailure = true;
printf("Failure to write to data block %i\n", uiBlock); printf("Failure to write to data block %i\n", uiBlock);
} }
if (uiBlock == 0 && (magic2 || magic3)) {
if (nfc_initiator_init(pnd) < 0) {
nfc_perror(pnd, "nfc_initiator_init");
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
};
if (nfc_initiator_select_passive_target(pnd, nmMifare, NULL, 0, &nt) <= 0) {
printf("!\nError: tag was removed\n");
return false;
}
}
} else { } else {
printf("Failure during write process.\n"); printf("Failure during write process.\n");
} }