243 lines
8.6 KiB
C
243 lines
8.6 KiB
C
/*-
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* Copyright (C) 2010, Audrey Diacre.
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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* $Id$
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*/
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#include "config.h"
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <freefare.h>
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/*
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* This example was written based on information provided by the
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* following documents:
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*
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* Mifare DESFire as Type 4 Tag
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* NFC Forum Type 4 Tag Extensions for Mifare DESFire
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* Rev. 1.1 - 21 August 2007
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*
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*/
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uint8_t key_data_picc[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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uint8_t key_data_app[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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struct {
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bool interactive;
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} create_options = {
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.interactive = true
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};
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void
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usage(char *progname)
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{
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fprintf (stderr, "This application turns Mifare DESFire targets into NFC Forum Type 4 Tags.\n");
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fprintf (stderr, "usage: %s [-y] [-K 11223344AABBCCDD]\n", progname);
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fprintf (stderr, "\nOptions:\n");
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fprintf (stderr, " -y Do not ask for confirmation\n");
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fprintf (stderr, " -K Provide another PICC key than the default one\n");
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}
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int
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main(int argc, char *argv[])
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{
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int ch;
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int error = EXIT_SUCCESS;
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nfc_device *device = NULL;
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MifareTag *tags = NULL;
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while ((ch = getopt (argc, argv, "hyK:")) != -1) {
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switch (ch) {
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case 'h':
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usage(argv[0]);
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exit (EXIT_SUCCESS);
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break;
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case 'y':
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create_options.interactive = false;
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break;
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case 'K':
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if (strlen(optarg) != 16) {
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usage(argv[0]);
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exit (EXIT_FAILURE);
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}
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uint64_t n = strtoull(optarg, NULL, 16);
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int i;
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for (i=7; i>=0; i--) {
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key_data_picc[i] = (uint8_t) n;
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n >>= 8;
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}
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break;
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default:
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usage(argv[0]);
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exit (EXIT_FAILURE);
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}
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}
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// Remaining args, if any, are in argv[optind .. (argc-1)]
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nfc_connstring devices[8];
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size_t device_count;
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nfc_init(NULL);
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device_count = nfc_list_devices (NULL, devices, 8);
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if (device_count <= 0)
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errx (EXIT_FAILURE, "No NFC device found.");
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for (size_t d = 0; d < device_count; d++) {
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device = nfc_open (NULL, devices[d]);
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if (!device) {
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warnx ("nfc_open() failed.");
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error = EXIT_FAILURE;
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continue;
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}
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tags = freefare_get_tags (device);
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if (!tags) {
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nfc_close (device);
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errx (EXIT_FAILURE, "Error listing tags.");
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}
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for (int i = 0; (!error) && tags[i]; i++) {
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if (DESFIRE != freefare_get_tag_type (tags[i]))
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continue;
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char *tag_uid = freefare_get_tag_uid (tags[i]);
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char buffer[BUFSIZ];
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printf ("Found %s with UID %s. ", freefare_get_tag_friendly_name (tags[i]), tag_uid);
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bool create_ndef = true;
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if (create_options.interactive) {
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printf ("Create NDEF app [yN] ");
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fgets (buffer, BUFSIZ, stdin);
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create_ndef = ((buffer[0] == 'y') || (buffer[0] == 'Y'));
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} else {
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printf ("\n");
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}
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if (create_ndef) {
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int res;
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res = mifare_desfire_connect (tags[i]);
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if (res < 0) {
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warnx ("Can't connect to Mifare DESFire target.");
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error = EXIT_FAILURE;
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break;
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}
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/* Initialised Formatting Procedure. See section 6.5.1 and 8.1 of Mifare DESFire as Type 4 Tag document*/
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// Send Mifare DESFire Select Application with AID equal to 000000h to select the PICC level
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res = mifare_desfire_select_application(tags[i], NULL);
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if (res < 0)
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errx (EXIT_FAILURE, "Application selection failed");
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MifareDESFireKey key_picc;
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MifareDESFireKey key_app;
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key_picc = mifare_desfire_des_key_new_with_version (key_data_picc);
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key_app = mifare_desfire_des_key_new_with_version (key_data_app);
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// Authentication with PICC master key MAY be needed to issue ChangeKeySettings command
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res = mifare_desfire_authenticate (tags[i], 0, key_picc);
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if (res < 0)
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errx (EXIT_FAILURE, "Authentication with PICC master key failed");
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uint8_t key_settings;
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uint8_t max_keys;
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mifare_desfire_get_key_settings(tags[i], &key_settings,&max_keys);
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if ((key_settings & 0x08) == 0x08){
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// Send Mifare DESFire ChangeKeySetting to change the PICC master key settings into :
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// bit7-bit4 equal to 0000b
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// bit3 equal to Xb, the configuration of the PICC master key MAY be changeable or frozen
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// bit2 equal to 0b, CreateApplication and DeleteApplication commands are allowed with PICC master key authentication
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// bit1 equal to 0b, GetApplicationIDs, and GetKeySettings are allowed with PICC master key authentication
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// bit0 equal to Xb, PICC masterkey MAY be frozen or changeable
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res = mifare_desfire_change_key_settings (tags[i],0x09);
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if (res < 0)
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errx (EXIT_FAILURE, "ChangeKeySettings failed");
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}
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// Mifare DESFire Create Application with AID equal to EEEE10h, key settings equal to 09, NumOfKeys equal to 01h
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MifareDESFireAID aid = mifare_desfire_aid_new(0xEEEE10);
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res = mifare_desfire_create_application (tags[i], aid, 0x09, 1);
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if (res < 0)
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errx (EXIT_FAILURE, "Application creation failed. Try mifare-desfire-format before running %s.", argv[0]);
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// Mifare DESFire SelectApplication (Select previously creates application)
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res = mifare_desfire_select_application(tags[i], aid);
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if (res < 0)
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errx (EXIT_FAILURE, "Application selection failed");
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free (aid);
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// Authentication with NDEF Tag Application master key (Authentication with key 0)
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res = mifare_desfire_authenticate (tags[i], 0, key_app);
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if (res < 0)
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errx (EXIT_FAILURE, "Authentication with NDEF Tag Application master key failed");
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// Mifare DESFire ChangeKeySetting with key settings equal to 00001001b
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res = mifare_desfire_change_key_settings (tags[i],0x09);
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if (res < 0)
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errx (EXIT_FAILURE, "ChangeKeySettings failed");
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// Mifare DESFire CreateStdDataFile with FileNo equal to 03h (CC File DESFire FID), ComSet equal to 00h,
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// AccesRights equal to E000h, File Size bigger equal to 00000Fh
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res = mifare_desfire_create_std_data_file(tags[i],0x03,0x00,0xE000,0x00000F);
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if (res < 0)
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errx (EXIT_FAILURE, "CreateStdDataFile failed");
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// Mifare DESFire WriteData to write the content of the CC File with CClEN equal to 000Fh,
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// Mapping Version equal to 10h,MLe equal to 003Bh, MLc equal to 0034h, and NDEF File Control TLV
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// equal to T =04h, L=06h, V=E1 04 (NDEF ISO FID=E104h) 0E E0 (NDEF File size =3808 Bytes) 00 (free read access)
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// 00 free write access
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uint8_t capability_container_file_content[15] = {
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0x00, 0x0F, // CCLEN: Size of this capability container.CCLEN values are between 000Fh and FFFEh
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0x10, // Mapping version
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0x00, 0x3B, // MLe: Maximum data size that can be read using a single ReadBinary command. MLe = 000Fh-FFFFh
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0x00, 0x34, // MLc: Maximum data size that can be sent using a single UpdateBinary command. MLc = 0001h-FFFFh
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0x04, 0x06, // T & L of NDEF File Control TLV, followed by 6 bytes of V:
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0xE1, 0x04, // File Identifier of NDEF File
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0x0E, 0xE0, // Maximum NDEF File size of 3808 bytes
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0x00, // free read access
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0x00 // free write acces
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};
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res = mifare_desfire_write_data(tags[i],0x03,0,sizeof(capability_container_file_content),capability_container_file_content);
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if (res>0){
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// Mifare DESFire CreateStdDataFile with FileNo equal to 04h (NDEF FileDESFire FID), CmmSet equal to 00h, AccessRigths
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// equal to EEE0h, FileSize equal to 000EE0h (3808 Bytes)
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res = mifare_desfire_create_std_data_file(tags[i],0x04,0x00,0xEEE0,0x000EE0);
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if (res < 0)
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errx (EXIT_FAILURE, "CreateStdDataFile failed");
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} else {
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errx (EXIT_FAILURE, "Write CC file content failed");
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}
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mifare_desfire_key_free (key_picc);
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mifare_desfire_key_free (key_app);
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mifare_desfire_disconnect (tags[i]);
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}
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free (tag_uid);
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}
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freefare_free_tags (tags);
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nfc_close (device);
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}
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nfc_exit(NULL);
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exit (error);
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}
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