apo/PollDesfire
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This commit is contained in:
Lynn Ochs 2021-03-09 14:26:53 +01:00
parent 67e2c550b2
commit 5210de18c7
1 changed files with 10 additions and 6 deletions
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16
poll_desfire.c
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@ -26,9 +26,10 @@ int main(int argc, char **argv) {
uint8_t key_data_real[16] = {0}; uint8_t key_data_real[16] = {0};
{ {
FILE *f = fopen("key", "rb"); char const *name = (argc > 1) ? argv[1] : "key";
FILE *f = fopen(name, "rb");
if (!f) { if (!f) {
errx(EXIT_FAILURE, "error opening key file."); errx(EXIT_FAILURE, "error opening key file: %s", name);
} }
if (fread(key_data_real, 1, sizeof key_data_real, f) < sizeof key_data_real) { if (fread(key_data_real, 1, sizeof key_data_real, f) < sizeof key_data_real) {
errx(EXIT_FAILURE, "key file too small."); errx(EXIT_FAILURE, "key file too small.");
@ -37,6 +38,8 @@ int main(int argc, char **argv) {
} }
MifareDESFireKey key_real = mifare_desfire_aes_key_new(key_data_real); MifareDESFireKey key_real = mifare_desfire_aes_key_new(key_data_real);
FILE *out = argc > 2 ? fopen(argv[2], "w") : stdout;
device_count = nfc_list_devices(context, devices, sizeof(devices) / sizeof(devices[0])); device_count = nfc_list_devices(context, devices, sizeof(devices) / sizeof(devices[0]));
if (device_count <= 0) { if (device_count <= 0) {
errx(EXIT_FAILURE, "No NFC device found."); errx(EXIT_FAILURE, "No NFC device found.");
@ -59,7 +62,7 @@ int main(int argc, char **argv) {
/* Poll for targets */ /* Poll for targets */
const nfc_modulation nmModulations = {.nmt = NMT_ISO14443A, .nbr = NBR_106}; const nfc_modulation nmModulations = {.nmt = NMT_ISO14443A, .nbr = NBR_106};
nfc_target target; nfc_target target;
nfc_initiator_poll_target(device, &nmModulations, 1, 0x10, 1, &target); nfc_initiator_poll_target(device, &nmModulations, 1, 10, 1, &target);
/* Got at least one, read tag list */ /* Got at least one, read tag list */
tags = freefare_get_tags(device); tags = freefare_get_tags(device);
@ -69,7 +72,6 @@ int main(int argc, char **argv) {
} }
if (!tags[0]) { if (!tags[0]) {
printf("Tag list returned no tags\n");
goto free_tags; goto free_tags;
} }
@ -104,7 +106,8 @@ int main(int argc, char **argv) {
warnx("Authentication on master application failed"); warnx("Authentication on master application failed");
goto free_tag; goto free_tag;
} else { } else {
printf("Valid key: %s\n", tag_uid); fprintf(out, "%s\n", tag_uid);
fflush(out);
} }
wait_disconnect: wait_disconnect:
@ -116,7 +119,8 @@ int main(int argc, char **argv) {
free(tag_uid); free(tag_uid);
free_tags: free_tags:
freefare_free_tags(tags); freefare_free_tags(tags);
fflush(stdout);
fflush(stderr);
} }
mifare_desfire_key_free(key_null); mifare_desfire_key_free(key_null);