package/utils/otrx/src/otrx.c

   1 /*
   2  * otrx
   3  *
   4  * Copyright (C) 2015-2017 Rafał Miłecki <zajec5@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  */
  11
  12 #include <byteswap.h>
  13 #include <endian.h>
  14 #include <errno.h>
  15 #include <stdint.h>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20
  21 #if !defined(__BYTE_ORDER)
  22 #error "Unknown byte order"
  23 #endif
  24
  25 #if __BYTE_ORDER == __BIG_ENDIAN
  26 #define cpu_to_le32(x)  bswap_32(x)
  27 #define le32_to_cpu(x)  bswap_32(x)
  28 #elif __BYTE_ORDER == __LITTLE_ENDIAN
  29 #define cpu_to_le32(x)  (x)
  30 #define le32_to_cpu(x)  (x)
  31 #else
  32 #error "Unsupported endianness"
  33 #endif
  34
  35 #define TRX_MAGIC                       0x30524448
  36 #define TRX_FLAGS_OFFSET                12
  37 #define TRX_MAX_PARTS                   3
  38
  39 struct trx_header {
  40         uint32_t magic;
  41         uint32_t length;
  42         uint32_t crc32;
  43         uint16_t flags;
  44         uint16_t version;
  45         uint32_t offset[3];
  46 };
  47
  48 char *trx_path;
  49 size_t trx_offset = 0;
  50 char *partition[TRX_MAX_PARTS] = {};
  51
  52 static inline size_t otrx_min(size_t x, size_t y) {
  53         return x < y ? x : y;
  54 }
  55
  56 /**************************************************
  57  * CRC32
  58  **************************************************/
  59
  60 static const uint32_t crc32_tbl[] = {
  61         0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
  62         0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
  63         0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  64         0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
  65         0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
  66         0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  67         0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
  68         0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
  69         0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  70         0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
  71         0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
  72         0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  73         0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
  74         0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
  75         0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  76         0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
  77         0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
  78         0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  79         0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
  80         0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
  81         0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  82         0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
  83         0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
  84         0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  85         0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
  86         0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
  87         0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  88         0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
  89         0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
  90         0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  91         0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
  92         0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
  93         0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  94         0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
  95         0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
  96         0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  97         0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
  98         0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
  99         0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
 100         0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
 101         0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
 102         0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
 103         0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
 104         0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
 105         0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
 106         0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
 107         0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
 108         0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
 109         0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
 110         0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
 111         0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
 112         0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
 113         0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
 114         0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
 115         0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
 116         0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
 117         0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
 118         0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
 119         0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
 120         0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
 121         0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
 122         0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
 123         0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
 124         0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
 125 };
 126
 127 uint32_t otrx_crc32(uint32_t crc, uint8_t *buf, size_t len) {
 128         while (len) {
 129                 crc = crc32_tbl[(crc ^ *buf) & 0xff] ^ (crc >> 8);
 130                 buf++;
 131                 len--;
 132         }
 133
 134         return crc;
 135 }
 136
 137 /**************************************************
 138  * Check
 139  **************************************************/
 140
 141 static void otrx_check_parse_options(int argc, char **argv) {
 142         int c;
 143
 144         while ((c = getopt(argc, argv, "o:")) != -1) {
 145                 switch (c) {
 146                 case 'o':
 147                         trx_offset = atoi(optarg);
 148                         break;
 149                 }
 150         }
 151 }
 152
 153 static int otrx_check(int argc, char **argv) {
 154         FILE *trx;
 155         struct trx_header hdr;
 156         size_t bytes, length;
 157         uint8_t buf[1024];
 158         uint32_t crc32;
 159         int err = 0;
 160
 161         if (argc < 3) {
 162                 fprintf(stderr, "No TRX file passed\n");
 163                 err = -EINVAL;
 164                 goto out;
 165         }
 166         trx_path = argv[2];
 167
 168         optind = 3;
 169         otrx_check_parse_options(argc, argv);
 170
 171         trx = fopen(trx_path, "r");
 172         if (!trx) {
 173                 fprintf(stderr, "Couldn't open %s\n", trx_path);
 174                 err = -EACCES;
 175                 goto out;
 176         }
 177
 178         fseek(trx, trx_offset, SEEK_SET);
 179         bytes = fread(&hdr, 1, sizeof(hdr), trx);
 180         if (bytes != sizeof(hdr)) {
 181                 fprintf(stderr, "Couldn't read %s header\n", trx_path);
 182                 err =  -EIO;
 183                 goto err_close;
 184         }
 185
 186         if (le32_to_cpu(hdr.magic) != TRX_MAGIC) {
 187                 fprintf(stderr, "Invalid TRX magic: 0x%08x\n", le32_to_cpu(hdr.magic));
 188                 err =  -EINVAL;
 189                 goto err_close;
 190         }
 191
 192         length = le32_to_cpu(hdr.length);
 193         if (length < sizeof(hdr)) {
 194                 fprintf(stderr, "Length read from TRX too low (%zu B)\n", length);
 195                 err = -EINVAL;
 196                 goto err_close;
 197         }
 198
 199         crc32 = 0xffffffff;
 200         fseek(trx, trx_offset + TRX_FLAGS_OFFSET, SEEK_SET);
 201         length -= TRX_FLAGS_OFFSET;
 202         while ((bytes = fread(buf, 1, otrx_min(sizeof(buf), length), trx)) > 0) {
 203                 crc32 = otrx_crc32(crc32, buf, bytes);
 204                 length -= bytes;
 205         }
 206
 207         if (length) {
 208                 fprintf(stderr, "Couldn't read last %zd B of data from %s\n", length, trx_path);
 209                 err = -EIO;
 210                 goto err_close;
 211         }
 212
 213         if (crc32 != le32_to_cpu(hdr.crc32)) {
 214                 fprintf(stderr, "Invalid data crc32: 0x%08x instead of 0x%08x\n", crc32, le32_to_cpu(hdr.crc32));
 215                 err =  -EINVAL;
 216                 goto err_close;
 217         }
 218
 219         printf("Found a valid TRX version %d\n", le32_to_cpu(hdr.version));
 220
 221 err_close:
 222         fclose(trx);
 223 out:
 224         return err;
 225 }
 226
 227 /**************************************************
 228  * Create
 229  **************************************************/
 230
 231 static ssize_t otrx_create_append_file(FILE *trx, const char *in_path) {
 232         FILE *in;
 233         size_t bytes;
 234         ssize_t length = 0;
 235         uint8_t buf[1024];
 236
 237         in = fopen(in_path, "r");
 238         if (!in) {
 239                 fprintf(stderr, "Couldn't open %s\n", in_path);
 240                 return -EACCES;
 241         }
 242
 243         while ((bytes = fread(buf, 1, sizeof(buf), in)) > 0) {
 244                 if (fwrite(buf, 1, bytes, trx) != bytes) {
 245                         fprintf(stderr, "Couldn't write %zu B to %s\n", bytes, trx_path);
 246                         length = -EIO;
 247                         break;
 248                 }
 249                 length += bytes;
 250         }
 251
 252         fclose(in);
 253
 254         return length;
 255 }
 256
 257 static ssize_t otrx_create_append_zeros(FILE *trx, size_t length) {
 258         uint8_t *buf;
 259
 260         buf = malloc(length);
 261         if (!buf)
 262                 return -ENOMEM;
 263         memset(buf, 0, length);
 264
 265         if (fwrite(buf, 1, length, trx) != length) {
 266                 fprintf(stderr, "Couldn't write %zu B to %s\n", length, trx_path);
 267                 return -EIO;
 268         }
 269
 270         return length;
 271 }
 272
 273 static ssize_t otrx_create_align(FILE *trx, size_t curr_offset, size_t alignment) {
 274         if (curr_offset & (alignment - 1)) {
 275                 size_t length = alignment - (curr_offset % alignment);
 276                 return otrx_create_append_zeros(trx, length);
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int otrx_create_write_hdr(FILE *trx, struct trx_header *hdr) {
 283         size_t bytes, length;
 284         uint8_t buf[1024];
 285         uint32_t crc32;
 286
 287         hdr->magic = cpu_to_le32(TRX_MAGIC);
 288         hdr->version = 1;
 289
 290         fseek(trx, 0, SEEK_SET);
 291         bytes = fwrite(hdr, 1, sizeof(struct trx_header), trx);
 292         if (bytes != sizeof(struct trx_header)) {
 293                 fprintf(stderr, "Couldn't write TRX header to %s\n", trx_path);
 294                 return -EIO;
 295         }
 296
 297         length = le32_to_cpu(hdr->length);
 298
 299         crc32 = 0xffffffff;
 300         fseek(trx, TRX_FLAGS_OFFSET, SEEK_SET);
 301         length -= TRX_FLAGS_OFFSET;
 302         while ((bytes = fread(buf, 1, otrx_min(sizeof(buf), length), trx)) > 0) {
 303                 crc32 = otrx_crc32(crc32, buf, bytes);
 304                 length -= bytes;
 305         }
 306         hdr->crc32 = cpu_to_le32(crc32);
 307
 308         fseek(trx, 0, SEEK_SET);
 309         bytes = fwrite(hdr, 1, sizeof(struct trx_header), trx);
 310         if (bytes != sizeof(struct trx_header)) {
 311                 fprintf(stderr, "Couldn't write TRX header to %s\n", trx_path);
 312                 return -EIO;
 313         }
 314
 315         return 0;
 316 }
 317
 318 static int otrx_create(int argc, char **argv) {
 319         FILE *trx;
 320         struct trx_header hdr = {};
 321         ssize_t sbytes;
 322         size_t curr_idx = 0;
 323         size_t curr_offset = sizeof(hdr);
 324         int c;
 325         int err = 0;
 326
 327         if (argc < 3) {
 328                 fprintf(stderr, "No TRX file passed\n");
 329                 err = -EINVAL;
 330                 goto out;
 331         }
 332         trx_path = argv[2];
 333
 334         trx = fopen(trx_path, "w+");
 335         if (!trx) {
 336                 fprintf(stderr, "Couldn't open %s\n", trx_path);
 337                 err = -EACCES;
 338                 goto out;
 339         }
 340         fseek(trx, curr_offset, SEEK_SET);
 341
 342         optind = 3;
 343         while ((c = getopt(argc, argv, "f:A:a:b:")) != -1) {
 344                 switch (c) {
 345                 case 'f':
 346                         if (curr_idx >= TRX_MAX_PARTS) {
 347                                 err = -ENOSPC;
 348                                 fprintf(stderr, "Reached TRX partitions limit, no place for %s\n", optarg);
 349                                 goto err_close;
 350                         }
 351
 352                         sbytes = otrx_create_append_file(trx, optarg);
 353                         if (sbytes < 0) {
 354                                 fprintf(stderr, "Failed to append file %s\n", optarg);
 355                         } else {
 356                                 hdr.offset[curr_idx++] = curr_offset;
 357                                 curr_offset += sbytes;
 358                         }
 359
 360                         sbytes = otrx_create_align(trx, curr_offset, 4);
 361                         if (sbytes < 0)
 362                                 fprintf(stderr, "Failed to append zeros\n");
 363                         else
 364                                 curr_offset += sbytes;
 365
 366                         break;
 367                 case 'A':
 368                         sbytes = otrx_create_append_file(trx, optarg);
 369                         if (sbytes < 0) {
 370                                 fprintf(stderr, "Failed to append file %s\n", optarg);
 371                         } else {
 372                                 curr_offset += sbytes;
 373                         }
 374
 375                         sbytes = otrx_create_align(trx, curr_offset, 4);
 376                         if (sbytes < 0)
 377                                 fprintf(stderr, "Failed to append zeros\n");
 378                         else
 379                                 curr_offset += sbytes;
 380                         break;
 381                 case 'a':
 382                         sbytes = otrx_create_align(trx, curr_offset, strtol(optarg, NULL, 0));
 383                         if (sbytes < 0)
 384                                 fprintf(stderr, "Failed to append zeros\n");
 385                         else
 386                                 curr_offset += sbytes;
 387                         break;
 388                 case 'b':
 389                         sbytes = strtol(optarg, NULL, 0) - curr_offset;
 390                         if (sbytes < 0) {
 391                                 fprintf(stderr, "Current TRX length is 0x%zx, can't pad it with zeros to 0x%lx\n", curr_offset, strtol(optarg, NULL, 0));
 392                         } else {
 393                                 sbytes = otrx_create_append_zeros(trx, sbytes);
 394                                 if (sbytes < 0)
 395                                         fprintf(stderr, "Failed to append zeros\n");
 396                                 else
 397                                         curr_offset += sbytes;
 398                         }
 399                         break;
 400                 }
 401                 if (err)
 402                         break;
 403         }
 404
 405         sbytes = otrx_create_align(trx, curr_offset, 0x1000);
 406         if (sbytes < 0)
 407                 fprintf(stderr, "Failed to append zeros\n");
 408         else
 409                 curr_offset += sbytes;
 410
 411         hdr.length = curr_offset;
 412         otrx_create_write_hdr(trx, &hdr);
 413 err_close:
 414         fclose(trx);
 415 out:
 416         return err;
 417 }
 418
 419 /**************************************************
 420  * Extract
 421  **************************************************/
 422
 423 static void otrx_extract_parse_options(int argc, char **argv) {
 424         int c;
 425
 426         while ((c = getopt(argc, argv, "c:e:o:1:2:3:")) != -1) {
 427                 switch (c) {
 428                 case 'o':
 429                         trx_offset = atoi(optarg);
 430                         break;
 431                 case '1':
 432                         partition[0] = optarg;
 433                         break;
 434                 case '2':
 435                         partition[1] = optarg;
 436                         break;
 437                 case '3':
 438                         partition[2] = optarg;
 439                         break;
 440                 }
 441         }
 442 }
 443
 444 static int otrx_extract_copy(FILE *trx, size_t offset, size_t length, char *out_path) {
 445         FILE *out;
 446         size_t bytes;
 447         uint8_t *buf;
 448         int err = 0;
 449
 450         out = fopen(out_path, "w");
 451         if (!out) {
 452                 fprintf(stderr, "Couldn't open %s\n", out_path);
 453                 err = -EACCES;
 454                 goto out;
 455         }
 456
 457         buf = malloc(length);
 458         if (!buf) {
 459                 fprintf(stderr, "Couldn't alloc %zu B buffer\n", length);
 460                 err =  -ENOMEM;
 461                 goto err_close;
 462         }
 463
 464         fseek(trx, offset, SEEK_SET);
 465         bytes = fread(buf, 1, length, trx);
 466         if (bytes != length) {
 467                 fprintf(stderr, "Couldn't read %zu B of data from %s\n", length, trx_path);
 468                 err =  -ENOMEM;
 469                 goto err_free_buf;
 470         };
 471
 472         bytes = fwrite(buf, 1, length, out);
 473         if (bytes != length) {
 474                 fprintf(stderr, "Couldn't write %zu B to %s\n", length, out_path);
 475                 err =  -ENOMEM;
 476                 goto err_free_buf;
 477         }
 478
 479         printf("Extracted 0x%zx bytes into %s\n", length, out_path);
 480
 481 err_free_buf:
 482         free(buf);
 483 err_close:
 484         fclose(out);
 485 out:
 486         return err;
 487 }
 488
 489 static int otrx_extract(int argc, char **argv) {
 490         FILE *trx;
 491         struct trx_header hdr;
 492         size_t bytes;
 493         int i;
 494         int err = 0;
 495
 496         if (argc < 3) {
 497                 fprintf(stderr, "No TRX file passed\n");
 498                 err = -EINVAL;
 499                 goto out;
 500         }
 501         trx_path = argv[2];
 502
 503         optind = 3;
 504         otrx_extract_parse_options(argc, argv);
 505
 506         trx = fopen(trx_path, "r");
 507         if (!trx) {
 508                 fprintf(stderr, "Couldn't open %s\n", trx_path);
 509                 err = -EACCES;
 510                 goto out;
 511         }
 512
 513         fseek(trx, trx_offset, SEEK_SET);
 514         bytes = fread(&hdr, 1, sizeof(hdr), trx);
 515         if (bytes != sizeof(hdr)) {
 516                 fprintf(stderr, "Couldn't read %s header\n", trx_path);
 517                 err =  -EIO;
 518                 goto err_close;
 519         }
 520
 521         if (le32_to_cpu(hdr.magic) != TRX_MAGIC) {
 522                 fprintf(stderr, "Invalid TRX magic: 0x%08x\n", le32_to_cpu(hdr.magic));
 523                 err =  -EINVAL;
 524                 goto err_close;
 525         }
 526
 527         for (i = 0; i < TRX_MAX_PARTS; i++) {
 528                 size_t length;
 529
 530                 if (!partition[i])
 531                         continue;
 532                 if (!hdr.offset[i]) {
 533                         printf("TRX doesn't contain partition %d, can't extract %s\n", i + 1, partition[i]);
 534                         continue;
 535                 }
 536
 537                 if (i + 1 >= TRX_MAX_PARTS || !hdr.offset[i + 1])
 538                         length = le32_to_cpu(hdr.length) - le32_to_cpu(hdr.offset[i]);
 539                 else
 540                         length = le32_to_cpu(hdr.offset[i + 1]) - le32_to_cpu(hdr.offset[i]);
 541
 542                 otrx_extract_copy(trx, trx_offset + le32_to_cpu(hdr.offset[i]), length, partition[i]);
 543         }
 544
 545 err_close:
 546         fclose(trx);
 547 out:
 548         return err;
 549 }
 550
 551 /**************************************************
 552  * Start
 553  **************************************************/
 554
 555 static void usage() {
 556         printf("Usage:\n");
 557         printf("\n");
 558         printf("Checking TRX file:\n");
 559         printf("\totrx check <file> [options]\tcheck if file is a valid TRX\n");
 560         printf("\t-o offset\t\t\toffset of TRX data in file (default: 0)\n");
 561         printf("\n");
 562         printf("Creating new TRX file:\n");
 563         printf("\totrx create <file> [options] [partitions]\n");
 564         printf("\t-f file\t\t\t\t[partition] start new partition with content copied from file\n");
 565         printf("\t-A file\t\t\t\t[partition] append current partition with content copied from file\n");
 566         printf("\t-a alignment\t\t\t[partition] align current partition\n");
 567         printf("\t-b offset\t\t\t[partition] append zeros to partition till reaching absolute offset\n");
 568         printf("\n");
 569         printf("Extracting from TRX file:\n");
 570         printf("\totrx extract <file> [options]\textract partitions from TRX file\n");
 571         printf("\t-o offset\t\t\toffset of TRX data in file (default: 0)\n");
 572         printf("\t-1 file\t\t\t\tfile to extract 1st partition to (optional)\n");
 573         printf("\t-2 file\t\t\t\tfile to extract 2nd partition to (optional)\n");
 574         printf("\t-3 file\t\t\t\tfile to extract 3rd partition to (optional)\n");
 575 }
 576
 577 int main(int argc, char **argv) {
 578         if (argc > 1) {
 579                 if (!strcmp(argv[1], "check"))
 580                         return otrx_check(argc, argv);
 581                 else if (!strcmp(argv[1], "create"))
 582                         return otrx_create(argc, argv);
 583                 else if (!strcmp(argv[1], "extract"))
 584                         return otrx_extract(argc, argv);
 585         }
 586
 587         usage();
 588         return 0;
 589 }