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nfc-mfclassic: add option to allow using keyfile from another card

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This commit is contained in:
Philippe Teuwen 2013-03-12 15:38:59 +01:00
parent 16161e1a68
commit 20e51e9752
1 changed files with 10 additions and 5 deletions
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15
utils/nfc-mfclassic.c
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@ -65,6 +65,7 @@ static mifare_classic_tag mtKeys;
static mifare_classic_tag mtDump; static mifare_classic_tag mtDump;
static bool bUseKeyA; static bool bUseKeyA;
static bool bUseKeyFile; static bool bUseKeyFile;
static bool bForceKeyFile;
static bool bTolerateFailures; static bool bTolerateFailures;
static uint8_t uiBlocks; static uint8_t uiBlocks;
static uint8_t keys[] = { static uint8_t keys[] = {
@ -445,7 +446,7 @@ static void
print_usage(const char *pcProgramName) print_usage(const char *pcProgramName)
{ {
printf("Usage: "); printf("Usage: ");
printf("%s r|R|w|W a|b <dump.mfd> [<keys.mfd>]\n", pcProgramName); printf("%s r|R|w|W a|b <dump.mfd> [<keys.mfd> [f]]\n", pcProgramName);
printf(" r|R|w|W - Perform read from (r) or unlocked read from (R) or write to (w) or unlocked write to (W) card\n"); printf(" r|R|w|W - Perform read from (r) or unlocked read from (R) or write to (w) or unlocked write to (W) card\n");
printf(" *** note that unlocked write will attempt to overwrite block 0 including UID\n"); printf(" *** note that unlocked write will attempt to overwrite block 0 including UID\n");
printf(" *** unlocked read does not require authentication and will reveal A and B keys\n"); printf(" *** unlocked read does not require authentication and will reveal A and B keys\n");
@ -453,6 +454,7 @@ print_usage(const char *pcProgramName)
printf(" a|A|b|B - Use A or B keys for action; Halt on errors (a|b) or tolerate errors (A|B)\n"); printf(" a|A|b|B - Use A or B keys for action; Halt on errors (a|b) or tolerate errors (A|B)\n");
printf(" <dump.mfd> - MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)\n"); printf(" <dump.mfd> - MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)\n");
printf(" <keys.mfd> - MiFare Dump (MFD) that contain the keys (optional)\n"); printf(" <keys.mfd> - MiFare Dump (MFD) that contain the keys (optional)\n");
printf(" f - Force using the keyfile even if UID does not match (optional)\n");
} }
int int
@ -490,6 +492,7 @@ main(int argc, const char *argv[])
bUseKeyA = tolower((int)((unsigned char) * (argv[2]))) == 'a'; bUseKeyA = tolower((int)((unsigned char) * (argv[2]))) == 'a';
bTolerateFailures = tolower((int)((unsigned char) * (argv[2]))) != (int)((unsigned char) * (argv[2])); bTolerateFailures = tolower((int)((unsigned char) * (argv[2]))) != (int)((unsigned char) * (argv[2]));
bUseKeyFile = (argc > 4); bUseKeyFile = (argc > 4);
bForceKeyFile = ((argc > 5) && (strcmp((char*)argv[5], "f") == 0));
} }
if (atAction == ACTION_USAGE) { if (atAction == ACTION_USAGE) {
@ -567,10 +570,12 @@ main(int argc, const char *argv[])
fileUid[0], fileUid[1], fileUid[2], fileUid[3]); fileUid[0], fileUid[1], fileUid[2], fileUid[3]);
printf("Got card with UID starting as: %02x%02x%02x%02x\n", printf("Got card with UID starting as: %02x%02x%02x%02x\n",
pbtUID[0], pbtUID[1], pbtUID[2], pbtUID[3]); pbtUID[0], pbtUID[1], pbtUID[2], pbtUID[3]);
printf("Aborting!\n"); if (! bForceKeyFile) {
nfc_close(pnd); printf("Aborting!\n");
nfc_exit(context); nfc_close(pnd);
exit(EXIT_FAILURE); nfc_exit(context);
exit(EXIT_FAILURE);
}
} }
} }
printf("Found MIFARE Classic card:\n"); printf("Found MIFARE Classic card:\n");