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, 'c' },
  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 static void inc_key(char* key, int len)
  98 {
  99         int i;
 100
 101         if (len <= 0)
 102                 return;
 103         i = len - 1;
 104         if (key[i] < 0xff)
 105                 key[i]++;
 106         else
 107                 key[i] = 0;
 108 }
 109
 110 int main(int argc, char **argv)
 111 {
 112         int len, rc, c, option_index = 0;
 113         unsigned int page,uid,uid_len;
 114         char key[MIFARE_CL_KEY_LEN];
 115         char buf[MIFARE_CL_PAGE_SIZE];
 116
 117 #ifdef  __MINGW32__
 118         program_name = argv[0];
 119 #else
 120         program_name = basename(argv[0]);
 121 #endif/*__MINGW32__*/
 122
 123         memcpy(key, MIFARE_CL_KEYA_DEFAULT_INFINEON, MIFARE_CL_KEY_LEN);
 124
 125         printf("%s - (C) 2006 by Harald Welte\n"
 126                "This program is Free Software and has "
 127                "ABSOLUTELY NO WARRANTY\n\n", program_name);
 128
 129         printf("initializing librfid\n");
 130         rfid_init();
 131
 132         if (reader_init() < 0) {
 133                 fprintf(stderr, "error opening reader\n");
 134                 exit(1);
 135         }
 136
 137         while (1) {
 138                 c = getopt_long(argc, argv, "k:r:l:w:c:", mifare_opts,
 139                                 &option_index);
 140                 if (c == -1)
 141                         break;
 142
 143                 switch (c) {
 144                         int i;
 145                 case 'c':
 146                         page = atoi(optarg);
 147                         printf("key: %s\n", hexdump(key, MIFARE_CL_KEY_LEN));
 148                         len = MIFARE_CL_PAGE_SIZE;
 149                         mifare_l3();
 150                         for (i = 0; i <= 0xff; i++) {
 151                                 key[MIFARE_CL_KEY_LEN-1]=i;
 152                                 if (mifare_cl_auth(key, page) >= 0)
 153                                         printf("KEY: %s\n",hexdump(key, MIFARE_CL_KEY_LEN));
 154                         }
 155
 156                         break;
 157                 case 'k':
 158                         hexread(key, optarg, strlen(optarg));
 159                         printf("key: %s\n", hexdump(key, MIFARE_CL_KEY_LEN));
 160                         break;
 161                 case 'r':
 162                         page = atoi(optarg);
 163                         printf("read(key='%s',page=%u):",
 164                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 165                         len = MIFARE_CL_PAGE_SIZE;
 166                         mifare_l3();
 167                         if (mifare_cl_auth(key, page) < 0)
 168                                 exit(1);
 169
 170                         uid_len=sizeof(uid);
 171                         uid=0;
 172                         if(rfid_layer2_getopt(l2h,RFID_OPT_LAYER2_UID,&uid,&uid_len)>=0)
 173                             printf("UID=%08X (len=%u)\n",uid,uid_len);
 174
 175                         len=MIFARE_CL_PAGE_SIZE;
 176                         rc = rfid_protocol_read(ph, page, buf, &len);
 177                         if (rc < 0) {
 178                                 printf("\n");
 179                                 fprintf(stderr, "error during read\n");
 180                                 break;
 181                         }
 182                         printf("len=%u data=%s\n", len, hexdump(buf, len));
 183
 184                         if (page & 0x3 == 0x3) {
 185                                 struct mfcl_access_sect s;
 186                                 struct mfcl_access_exp_sect es;
 187                                 int b;
 188                                 u_int8_t recreated[4];
 189                                 mfcl_parse_access(&s, buf+6);
 190                                 printf("access b0:%u b1:%u b2:%u b3:%u\n",
 191                                         s.block[0], s.block[1],
 192                                         s.block[2], s.block[3]);
 193                                 mfcl_access_to_exp(&es, &s);
 194                                 for (b = 0; b < 3; b++)
 195                                         printf("%u: %s\n", b, mfcl_access_exp_stringify(&es.block[b]));
 196                                 printf("3: %s\n", mfcl_access_exp_acc_stringify(&es.acc));
 197 #if 0
 198                                 mfcl_compile_access(recreated, &s);
 199                                 printf("recreated; %s\n", hexdump(recreated,4));
 200 #endif
 201                         }
 202                         break;
 203                 case 'l':
 204                         page = atoi(optarg);
 205                         printf("read_loop(key='%s',page=%u):\n",
 206                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 207                         while (1) {
 208                                 mifare_l3();
 209                                 if (mifare_cl_auth(key, page) < 0)
 210                                         continue;
 211
 212                                 uid_len=sizeof(uid);
 213                                 uid=0;
 214                                 if(rfid_layer2_getopt(l2h,RFID_OPT_LAYER2_UID,&uid,&uid_len)>=0)
 215                                     printf("UID=%08X (len=%u)\n",uid,uid_len);
 216
 217                                 len=MIFARE_CL_PAGE_SIZE;
 218                                 rc = rfid_protocol_read(ph, page, buf, &len);
 219                                 if (rc < 0) {
 220                                         printf("\n");
 221                                         fprintf(stderr, "error during read\n");
 222                                         continue;
 223                                 }
 224                                 printf("%s\n", hexdump(buf, len));
 225                         }
 226                         break;
 227                 case 'w':
 228                         page = atoi(optarg);
 229                         len = strlen(argv[optind]);
 230                         len = hexread(buf, argv[optind], len);
 231                         printf("write(key='%s',page=%u):",
 232                                 hexdump(key, MIFARE_CL_KEY_LEN), page);
 233                         printf(" '%s'(%u):", hexdump(buf, len), len);
 234                         mifare_l3();
 235                         if (mifare_cl_auth(key, page) < 0)
 236                                 exit(1);
 237                         rc = rfid_protocol_write(ph, page, buf, len);
 238                         if (rc < 0) {
 239                                 printf("\n");
 240                                 fprintf(stderr, "error during write\n");
 241                                 break;
 242                         }
 243                         printf("success\n");
 244                         break;
 245                 case 'h':
 246                 default:
 247                         help();
 248                 }
 249         }
 250
 251 #if 0
 252         rfid_protocol_close(ph);
 253         rfid_protocol_fini(ph);
 254
 255         rfid_layer2_close(l2h);
 256         rfid_layer2_fini(l2h);
 257 #endif
 258         rfid_reader_close(rh);
 259         exit(0);
 260 }
 261