git.rot13.org Git - librfid/blob - utils/mifare-tool.c

   1 /* mifare-tool - a small command-line tool for librfid mifare testing
   2  *
   3  * (C) 2006 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License version 2
   7  *  as published by the Free Software Foundation
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdio.h>
  20 #include <unistd.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 #ifndef __MINGW32__
  26 #include <libgen.h>
  27 #endif
  28
  29 #define _GNU_SOURCE
  30 #include <getopt.h>
  31
  32 #include <librfid/rfid.h>
  33 #include <librfid/rfid_scan.h>
  34 #include <librfid/rfid_reader.h>
  35 #include <librfid/rfid_layer2.h>
  36 #include <librfid/rfid_protocol.h>
  37
  38 #include <librfid/rfid_protocol_mifare_classic.h>
  39 #include <librfid/rfid_protocol_mifare_ul.h>
  40
  41 #include <librfid/rfid_access_mifare_classic.h>
  42
  43 #include "librfid-tool.h"
  44
  45 static char *program_name;
  46
  47 static void help(void)
  48 {
  49         printf( " -h    --help          Print this help message\n"
  50                 " -r    --read          Read a mifare sector\n"
  51                 " -l    --loop-read     Loop reading a mifare sector\n"
  52                 " -w    --write         Write a mifare sector\n"
  53                 " -k    --key           Specify mifare access key (in hex tuples)\n"
  54                 " -b    --brute-force n Brute Force read sector n\n");
  55 }
  56
  57 static struct option mifare_opts[] = {
  58         { "key", 1, 0, 'k' },
  59         { "read", 1, 0, 'r' },
  60         { "loop-read", 1, 0, 'l' },
  61         { "write", 1 ,0, 'w' },
  62         { "help", 0, 0, 'h' },
  63         { "brute-force", 1, 0, 'b' },
  64         { 0, 0, 0, 0 }
  65 };
  66
  67 static int mifare_cl_auth(unsigned char *key, int page)
  68 {
  69         int rc;
  70
  71         rc = mfcl_set_key(ph, key);
  72         if (rc < 0) {
  73                 fprintf(stderr, "key format error\n");
  74                 return rc;
  75         }
  76         rc = mfcl_auth(ph, RFID_CMD_MIFARE_AUTH1A, page);
  77         if (rc < 0) {
  78                 fprintf(stderr, "mifare auth error\n");
  79                 return rc;
  80         } else
  81                 printf("mifare auth succeeded!\n");
  82
  83         return 0;
  84 }
  85
  86 static void mifare_l3(void)
  87 {
  88         while (l2_init(RFID_LAYER2_ISO14443A) < 0) ;
  89
  90         printf("ISO14443-3A anticollision succeeded\n");
  91
  92         while (l3_init(RFID_PROTOCOL_MIFARE_CLASSIC) < 0) ;
  93
  94         printf("Mifare card available\n");
  95 }
  96
  97 int main(int argc, char **argv)
  98 {
  99         int len, rc, c, option_index = 0;
 100         unsigned int page,uid,uid_len;
 101         char key[MIFARE_CL_KEY_LEN];
 102         char buf[MIFARE_CL_PAGE_SIZE];
 103
 104 #ifdef  __MINGW32__
 105         program_name = argv[0];
 106 #else
 107         program_name = basename(argv[0]);
 108 #endif/*__MINGW32__*/
 109
 110         memcpy(key, MIFARE_CL_KEYA_DEFAULT_INFINEON, MIFARE_CL_KEY_LEN);
 111
 112         printf("%s - (C) 2006 by Harald Welte\n"
 113                "This program is Free Software and has "
 114                "ABSOLUTELY NO WARRANTY\n\n", program_name);
 115
 116         printf("initializing librfid\n");
 117         rfid_init();
 118
 119         if (reader_init() < 0) {
 120                 fprintf(stderr, "error opening reader\n");
 121                 exit(1);
 122         }
 123
 124         while (1) {
 125                 c = getopt_long(argc, argv, "k:r:l:w:b:h", mifare_opts,
 126                                 &option_index);
 127                 if (c == -1)
 128                         break;
 129
 130                 switch (c) {
 131                         int i;
 132                 case 'b':
 133                         page = atoi(optarg);
 134                         printf("key: %s\n", hexdump(key, MIFARE_CL_KEY_LEN));
 135                         len = MIFARE_CL_PAGE_SIZE;
 136                         mifare_l3();
 137                         for (i = 0; i <= 0xff; i++) {
 138                                 key[MIFARE_CL_KEY_LEN-1]=i;
 139                                 if (mifare_cl_auth(key, page) >= 0)
 140                                         printf("KEY: %s\n",hexdump(key, MIFARE_CL_KEY_LEN));
 141                         }
 142
 143                         break;
 144                 case 'k':
 145                         hexread(key, optarg, strlen(optarg));
 146                         printf("key: %s\n", hexdump(key, MIFARE_CL_KEY_LEN));
 147                         break;
 148                 case 'r':
 149                         page = atoi(optarg);
 150                         printf("read(key='%s',page=%u):",
 151                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 152                         len = MIFARE_CL_PAGE_SIZE;
 153                         mifare_l3();
 154                         if (mifare_cl_auth(key, page) < 0)
 155                                 exit(1);
 156
 157                         uid_len=sizeof(uid);
 158                         uid=0;
 159                         if(rfid_layer2_getopt(l2h,RFID_OPT_LAYER2_UID,&uid,&uid_len)>=0)
 160                             printf("UID=%08X (len=%u)\n",uid,uid_len);
 161
 162                         len=MIFARE_CL_PAGE_SIZE;
 163                         rc = rfid_protocol_read(ph, page, buf, &len);
 164                         if (rc < 0) {
 165                                 printf("\n");
 166                                 fprintf(stderr, "error during read\n");
 167                                 break;
 168                         }
 169                         printf("len=%u data=%s\n", len, hexdump(buf, len));
 170
 171                         if (page & 0x3 == 0x3) {
 172                                 struct mfcl_access_sect s;
 173                                 struct mfcl_access_exp_sect es;
 174                                 int b;
 175                                 u_int8_t recreated[4];
 176                                 mfcl_parse_access(&s, buf+6);
 177                                 printf("access b0:%u b1:%u b2:%u b3:%u\n",
 178                                         s.block[0], s.block[1],
 179                                         s.block[2], s.block[3]);
 180                                 mfcl_access_to_exp(&es, &s);
 181                                 for (b = 0; b < 3; b++)
 182                                         printf("%u: %s\n", b, mfcl_access_exp_stringify(&es.block[b]));
 183                                 printf("3: %s\n", mfcl_access_exp_acc_stringify(&es.acc));
 184 #if 0
 185                                 mfcl_compile_access(recreated, &s);
 186                                 printf("recreated; %s\n", hexdump(recreated,4));
 187 #endif
 188                         }
 189                         break;
 190                 case 'l':
 191                         page = atoi(optarg);
 192                         printf("read_loop(key='%s',page=%u):\n",
 193                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 194                         while (1) {
 195                                 mifare_l3();
 196                                 if (mifare_cl_auth(key, page) < 0)
 197                                         continue;
 198
 199                                 uid_len=sizeof(uid);
 200                                 uid=0;
 201                                 if(rfid_layer2_getopt(l2h,RFID_OPT_LAYER2_UID,&uid,&uid_len)>=0)
 202                                     printf("UID=%08X (len=%u)\n",uid,uid_len);
 203
 204                                 len=MIFARE_CL_PAGE_SIZE;
 205                                 rc = rfid_protocol_read(ph, page, buf, &len);
 206                                 if (rc < 0) {
 207                                         printf("\n");
 208                                         fprintf(stderr, "error during read\n");
 209                                         continue;
 210                                 }
 211                                 printf("%s\n", hexdump(buf, len));
 212                         }
 213                         break;
 214                 case 'w':
 215                         page = atoi(optarg);
 216                         len = strlen(argv[optind]);
 217                         len = hexread(buf, argv[optind], len);
 218                         printf("write(key='%s',page=%u):",
 219                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 220                         printf(" '%s'(%u):", hexdump(buf, len), len);
 221                         mifare_l3();
 222                         if (mifare_cl_auth(key, page) < 0)
 223                                 exit(1);
 224                         rc = rfid_protocol_write(ph, page, buf, len);
 225                         if (rc < 0) {
 226                                 printf("\n");
 227                                 fprintf(stderr, "error during write\n");
 228                                 break;
 229                         }
 230                         printf("success\n");
 231                         break;
 232                 case 'h':
 233                 default:
 234                         help();
 235                 }
 236         }
 237
 238 #if 0
 239         rfid_protocol_close(ph);
 240         rfid_protocol_fini(ph);
 241
 242         rfid_layer2_close(l2h);
 243         rfid_layer2_fini(l2h);
 244 #endif
 245         rfid_reader_close(rh);
 246         exit(0);
 247 }
 248