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nfc-mfclassic: use smaller files for cards < 4k

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This commit is contained in:
Philippe Teuwen 2013-03-12 10:56:57 +01:00
parent 94617366a7
commit 56ea2e65dc
1 changed files with 38 additions and 24 deletions
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62
utils/nfc-mfclassic.c
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@ -470,40 +470,20 @@ main(int argc, const char *argv[])
print_usage(argv[0]); print_usage(argv[0]);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
// We don't know yet the card size so let's read only the UID from the keyfile for the moment
if (bUseKeyFile) { if (bUseKeyFile) {
FILE *pfKeys = fopen(argv[4], "rb"); FILE *pfKeys = fopen(argv[4], "rb");
if (pfKeys == NULL) { if (pfKeys == NULL) {
printf("Could not open keys file: %s\n", argv[4]); printf("Could not open keys file: %s\n", argv[4]);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
if (fread(&mtKeys, 1, sizeof(mtKeys), pfKeys) != sizeof(mtKeys)) { if (fread(&mtKeys, 1, 4, pfKeys) != 4) {
printf("Could not read keys file: %s\n", argv[4]); printf("Could not read UID from key file: %s\n", argv[4]);
fclose(pfKeys); fclose(pfKeys);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
fclose(pfKeys); fclose(pfKeys);
} }
if (atAction == ACTION_READ) {
memset(&mtDump, 0x00, sizeof(mtDump));
} else {
FILE *pfDump = fopen(argv[3], "rb");
if (pfDump == NULL) {
printf("Could not open dump file: %s\n", argv[3]);
exit(EXIT_FAILURE);
}
if (fread(&mtDump, 1, sizeof(mtDump), pfDump) != sizeof(mtDump)) {
printf("Could not read dump file: %s\n", argv[3]);
fclose(pfDump);
exit(EXIT_FAILURE);
}
fclose(pfDump);
}
// printf("Successfully opened required files\n");
nfc_init(&context); nfc_init(&context);
if (context == NULL) { if (context == NULL) {
ERR("Unable to init libnfc (malloc)"); ERR("Unable to init libnfc (malloc)");
@ -583,6 +563,40 @@ main(int argc, const char *argv[])
uiBlocks = 0x3f; uiBlocks = 0x3f;
printf("Guessing size: seems to be a %i-byte card\n", (uiBlocks + 1) * 16); printf("Guessing size: seems to be a %i-byte card\n", (uiBlocks + 1) * 16);
if (bUseKeyFile) {
FILE *pfKeys = fopen(argv[4], "rb");
if (pfKeys == NULL) {
printf("Could not open keys file: %s\n", argv[4]);
exit(EXIT_FAILURE);
}
if (fread(&mtKeys, 1, (uiBlocks + 1) * sizeof(mifare_classic_block), pfKeys) != (uiBlocks + 1) * sizeof(mifare_classic_block)) {
printf("Could not read keys file: %s\n", argv[4]);
fclose(pfKeys);
exit(EXIT_FAILURE);
}
fclose(pfKeys);
}
if (atAction == ACTION_READ) {
memset(&mtDump, 0x00, sizeof(mtDump));
} else {
FILE *pfDump = fopen(argv[3], "rb");
if (pfDump == NULL) {
printf("Could not open dump file: %s\n", argv[3]);
exit(EXIT_FAILURE);
}
if (fread(&mtDump, 1, (uiBlocks + 1) * sizeof(mifare_classic_block), pfDump) != (uiBlocks + 1) * sizeof(mifare_classic_block)) {
printf("Could not read dump file: %s\n", argv[3]);
fclose(pfDump);
exit(EXIT_FAILURE);
}
fclose(pfDump);
}
// printf("Successfully opened required files\n");
if (atAction == ACTION_READ) { if (atAction == ACTION_READ) {
if (read_card(unlock)) { if (read_card(unlock)) {
printf("Writing data to file: %s ...", argv[3]); printf("Writing data to file: %s ...", argv[3]);
@ -594,7 +608,7 @@ main(int argc, const char *argv[])
nfc_exit(context); nfc_exit(context);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
if (fwrite(&mtDump, 1, sizeof(mtDump), pfDump) != sizeof(mtDump)) { if (fwrite(&mtDump, 1, (uiBlocks + 1) * sizeof(mifare_classic_block), pfDump) != ((uiBlocks + 1) * sizeof(mifare_classic_block))) {
printf("\nCould not write to file: %s\n", argv[3]); printf("\nCould not write to file: %s\n", argv[3]);
fclose(pfDump); fclose(pfDump);
nfc_close(pnd); nfc_close(pnd);