src/cryptsetup.c

   1 #include <string.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <stdint.h>
   5 #include <stdarg.h>
   6 #include <inttypes.h>
   7 #include <errno.h>
   8 #include <unistd.h>
   9 #include <fcntl.h>
  10 #include <assert.h>
  11
  12 #include <libcryptsetup.h>
  13 #include <popt.h>
  14
  15 #include "../config.h"
  16
  17 #include "cryptsetup.h"
  18
  19 static int opt_verbose = 0;
  20 static int opt_debug = 0;
  21 static char *opt_cipher = NULL;
  22 static char *opt_hash = NULL;
  23 static int opt_verify_passphrase = 0;
  24 static char *opt_key_file = NULL;
  25 static char *opt_master_key_file = NULL;
  26 static char *opt_header_backup_file = NULL;
  27 static unsigned int opt_key_size = 0;
  28 static int opt_key_slot = CRYPT_ANY_SLOT;
  29 static uint64_t opt_size = 0;
  30 static uint64_t opt_offset = 0;
  31 static uint64_t opt_skip = 0;
  32 static int opt_readonly = 0;
  33 static int opt_iteration_time = 1000;
  34 static int opt_batch_mode = 0;
  35 static int opt_version_mode = 0;
  36 static int opt_timeout = 0;
  37 static int opt_tries = 3;
  38 static int opt_align_payload = 0;
  39 static int opt_non_exclusive = 0;
  40
  41 static const char **action_argv;
  42 static int action_argc;
  43
  44 static int action_create(int arg);
  45 static int action_remove(int arg);
  46 static int action_resize(int arg);
  47 static int action_status(int arg);
  48 static int action_luksFormat(int arg);
  49 static int action_luksOpen(int arg);
  50 static int action_luksAddKey(int arg);
  51 static int action_luksDelKey(int arg);
  52 static int action_luksKillSlot(int arg);
  53 static int action_luksRemoveKey(int arg);
  54 static int action_isLuks(int arg);
  55 static int action_luksUUID(int arg);
  56 static int action_luksDump(int arg);
  57 static int action_luksSuspend(int arg);
  58 static int action_luksResume(int arg);
  59 static int action_luksBackup(int arg);
  60 static int action_luksRestore(int arg);
  61
  62 static struct action_type {
  63         const char *type;
  64         int (*handler)(int);
  65         int arg;
  66         int required_action_argc;
  67         int required_memlock;
  68         const char *arg_desc;
  69         const char *desc;
  70 } action_types[] = {
  71         { "create",     action_create,          0, 2, 1, N_("<name> <device>"),N_("create device") },
  72         { "remove",     action_remove,          0, 1, 1, N_("<name>"), N_("remove device") },
  73         { "resize",     action_resize,          0, 1, 1, N_("<name>"), N_("resize active device") },
  74         { "status",     action_status,          0, 1, 0, N_("<name>"), N_("show device status") },
  75         { "luksFormat", action_luksFormat,      0, 1, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
  76         { "luksOpen",   action_luksOpen,        0, 2, 1, N_("<device> <name> "), N_("open LUKS device as mapping <name>") },
  77         { "luksAddKey", action_luksAddKey,      0, 1, 1, N_("<device> [<new key file>]"), N_("add key to LUKS device") },
  78         { "luksRemoveKey",action_luksRemoveKey, 0, 1, 1, N_("<device> [<key file>]"), N_("removes supplied key or key file from LUKS device") },
  79         { "luksKillSlot",  action_luksKillSlot, 0, 2, 1, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
  80         { "luksUUID",   action_luksUUID,        0, 1, 0, N_("<device>"), N_("print UUID of LUKS device") },
  81         { "isLuks",     action_isLuks,          0, 1, 0, N_("<device>"), N_("tests <device> for LUKS partition header") },
  82         { "luksClose",  action_remove,          0, 1, 1, N_("<name>"), N_("remove LUKS mapping") },
  83         { "luksDump",   action_luksDump,        0, 1, 0, N_("<device>"), N_("dump LUKS partition information") },
  84         { "luksSuspend",action_luksSuspend,     0, 1, 1, N_("<device>"), N_("Suspend LUKS device and wipe key (all IOs are frozen).") },
  85         { "luksResume", action_luksResume,      0, 1, 1, N_("<device>"), N_("Resume suspended LUKS device.") },
  86         { "luksHeaderBackup",action_luksBackup, 0, 1, 1, N_("<device>"), N_("Backup LUKS device header and keyslots") },
  87         { "luksHeaderRestore",action_luksRestore,0,1, 1, N_("<device>"), N_("Restore LUKS device header and keyslots") },
  88         { "luksDelKey", action_luksDelKey,      0, 2, 1, N_("<device> <key slot>"), N_("identical to luksKillSlot - DEPRECATED - see man page") },
  89         { "reload",     action_create,          1, 2, 1, N_("<name> <device>"), N_("modify active device - DEPRECATED - see man page") },
  90         { NULL, NULL, 0, 0, 0, NULL, NULL }
  91 };
  92
  93 static void clogger(struct crypt_device *cd, int class, const char *file,
  94                    int line, const char *format, ...)
  95 {
  96         va_list argp;
  97         char *target = NULL;
  98
  99         va_start(argp, format);
 100
 101         if (vasprintf(&target, format, argp) > 0) {
 102                 if (class >= 0) {
 103                         crypt_log(cd, class, target);
 104 #ifdef CRYPT_DEBUG
 105                 } else if (opt_debug)
 106                         printf("# %s:%d %s\n", file ?: "?", line, target);
 107 #else
 108                 } else if (opt_debug)
 109                         printf("# %s\n", target);
 110 #endif
 111         }
 112
 113         va_end(argp);
 114         free(target);
 115 }
 116
 117 /* Interface Callbacks */
 118 static int yesDialog(char *msg)
 119 {
 120         char *answer = NULL;
 121         size_t size = 0;
 122         int r = 1;
 123
 124         if(isatty(0) && !opt_batch_mode) {
 125                 log_std("\nWARNING!\n========\n");
 126                 log_std("%s\n\nAre you sure? (Type uppercase yes): ", msg);
 127                 if(getline(&answer, &size, stdin) == -1) {
 128                         perror("getline");
 129                         free(answer);
 130                         return 0;
 131                 }
 132                 if(strcmp(answer, "YES\n"))
 133                         r = 0;
 134                 free(answer);
 135         }
 136
 137         return r;
 138 }
 139
 140 static void cmdLineLog(int class, char *msg) {
 141     switch(class) {
 142
 143     case CRYPT_LOG_NORMAL:
 144             fputs(msg, stdout);
 145             break;
 146     case CRYPT_LOG_ERROR:
 147             fputs(msg, stderr);
 148             break;
 149     default:
 150             fprintf(stderr, "Internal error on logging class for msg: %s", msg);
 151             break;
 152     }
 153 }
 154
 155 static struct interface_callbacks cmd_icb = {
 156         .yesDialog = yesDialog,
 157         .log = cmdLineLog,
 158 };
 159
 160 static void _log(int class, const char *msg, void *usrptr)
 161 {
 162         cmdLineLog(class, (char *)msg);
 163 }
 164
 165 static int _yesDialog(const char *msg, void *usrptr)
 166 {
 167         return yesDialog((char*)msg);
 168 }
 169
 170 /* End ICBs */
 171
 172 static void show_status(int errcode)
 173 {
 174         char error[256], *error_;
 175
 176         if(!opt_verbose)
 177                 return;
 178
 179         if(!errcode) {
 180                 log_std(_("Command successful.\n"));
 181                 return;
 182         }
 183
 184         crypt_get_error(error, sizeof(error));
 185
 186         if (!error[0]) {
 187                 error_ = strerror_r(-errcode, error, sizeof(error));
 188                 if (error_ != error) {
 189                         strncpy(error, error_, sizeof(error));
 190                         error[sizeof(error) - 1] = '\0';
 191                 }
 192         }
 193
 194         log_err(_("Command failed with code %i"), -errcode);
 195         if (*error)
 196                 log_err(": %s\n", error);
 197         else
 198                 log_err(".\n");
 199 }
 200
 201 static int action_create(int reload)
 202 {
 203         struct crypt_options options = {
 204                 .name = action_argv[0],
 205                 .device = action_argv[1],
 206                 .cipher = opt_cipher?opt_cipher:DEFAULT_CIPHER,
 207                 .hash = opt_hash ?: DEFAULT_HASH,
 208                 .key_file = opt_key_file,
 209                 .key_size = ((opt_key_size)?opt_key_size:DEFAULT_KEY_SIZE)/8,
 210                 .key_slot = opt_key_slot,
 211                 .flags = 0,
 212                 .size = opt_size,
 213                 .offset = opt_offset,
 214                 .skip = opt_skip,
 215                 .timeout = opt_timeout,
 216                 .tries = opt_tries,
 217                 .icb = &cmd_icb,
 218         };
 219         int r;
 220
 221         if(reload)
 222                 log_err(_("The reload action is deprecated. Please use \"dmsetup reload\" in case you really need this functionality.\nWARNING: do not use reload to touch LUKS devices. If that is the case, hit Ctrl-C now.\n"));
 223
 224         if (options.hash && strcmp(options.hash, "plain") == 0)
 225                 options.hash = NULL;
 226         if (opt_verify_passphrase)
 227                 options.flags |= CRYPT_FLAG_VERIFY;
 228         if (opt_readonly)
 229                 options.flags |= CRYPT_FLAG_READONLY;
 230
 231         if (reload)
 232                 r = crypt_update_device(&options);
 233         else
 234                 r = crypt_create_device(&options);
 235
 236         return r;
 237 }
 238
 239 static int action_remove(int arg)
 240 {
 241         struct crypt_options options = {
 242                 .name = action_argv[0],
 243                 .icb = &cmd_icb,
 244         };
 245
 246         return crypt_remove_device(&options);
 247 }
 248
 249 static int action_resize(int arg)
 250 {
 251         struct crypt_options options = {
 252                 .name = action_argv[0],
 253                 .size = opt_size,
 254                 .icb = &cmd_icb,
 255         };
 256
 257         return crypt_resize_device(&options);
 258 }
 259
 260 static int action_status(int arg)
 261 {
 262         struct crypt_options options = {
 263                 .name = action_argv[0],
 264                 .icb = &cmd_icb,
 265         };
 266         int r;
 267
 268         r = crypt_query_device(&options);
 269         if (r < 0)
 270                 return r;
 271
 272         if (r == 0) {
 273                 /* inactive */
 274                 log_std("%s/%s is inactive.\n", crypt_get_dir(), options.name);
 275                 r = 1;
 276         } else {
 277                 /* active */
 278                 log_std("%s/%s is active:\n", crypt_get_dir(), options.name);
 279                 log_std("  cipher:  %s\n", options.cipher);
 280                 log_std("  keysize: %d bits\n", options.key_size * 8);
 281                 log_std("  device:  %s\n", options.device);
 282                 log_std("  offset:  %" PRIu64 " sectors\n", options.offset);
 283                 log_std("  size:    %" PRIu64 " sectors\n", options.size);
 284                 if (options.skip)
 285                         log_std("  skipped: %" PRIu64 " sectors\n", options.skip);
 286                 log_std("  mode:    %s\n", (options.flags & CRYPT_FLAG_READONLY)
 287                                            ? "readonly" : "read/write");
 288                 crypt_put_options(&options);
 289                 r = 0;
 290         }
 291         return r;
 292 }
 293
 294 static int _action_luksFormat_generateMK()
 295 {
 296         struct crypt_options options = {
 297                 .key_size = (opt_key_size ?: DEFAULT_LUKS_KEY_SIZE) / 8,
 298                 .key_slot = opt_key_slot,
 299                 .device = action_argv[0],
 300                 .cipher = opt_cipher ?: DEFAULT_LUKS_CIPHER,
 301                 .hash = opt_hash ?: DEFAULT_LUKS_HASH,
 302                 .new_key_file = action_argc > 1 ? action_argv[1] : NULL,
 303                 .flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE :  0),
 304                 .iteration_time = opt_iteration_time,
 305                 .timeout = opt_timeout,
 306                 .align_payload = opt_align_payload,
 307                 .icb = &cmd_icb,
 308         };
 309
 310         return crypt_luksFormat(&options);
 311 }
 312
 313 static int _read_mk(const char *file, char **key, int keysize)
 314 {
 315         int fd;
 316
 317         *key = malloc(keysize);
 318         if (!*key)
 319                 return -ENOMEM;
 320
 321         fd = open(file, O_RDONLY);
 322         if (fd == -1) {
 323                 log_err("Cannot read keyfile %s.\n", file);
 324                 return -EINVAL;
 325         }
 326         if ((read(fd, *key, keysize) != keysize)) {
 327                 log_err("Cannot read %d bytes from keyfile %s.\n", keysize, file);
 328                 close(fd);
 329                 memset(*key, 0, keysize);
 330                 free(*key);
 331                 return -EINVAL;
 332         }
 333         close(fd);
 334         return 0;
 335 }
 336
 337 static int _action_luksFormat_useMK()
 338 {
 339         int r = -EINVAL, keysize;
 340         char *key = NULL, cipher [MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
 341         struct crypt_device *cd = NULL;
 342         struct crypt_params_luks1 params = {
 343                 .hash = opt_hash ?: DEFAULT_LUKS_HASH,
 344                 .data_alignment = opt_align_payload,
 345         };
 346
 347         if (sscanf(opt_cipher ?: DEFAULT_LUKS_CIPHER,
 348                    "%" MAX_CIPHER_LEN_STR "[^-]-%" MAX_CIPHER_LEN_STR "s",
 349                    cipher, cipher_mode) != 2) {
 350                 log_err("No known cipher specification pattern detected.\n");
 351                 return -EINVAL;
 352         }
 353
 354         keysize = (opt_key_size ?: DEFAULT_LUKS_KEY_SIZE) / 8;
 355         if (_read_mk(opt_master_key_file, &key, keysize) < 0)
 356                 return -EINVAL;
 357
 358         if ((r = crypt_init(&cd, action_argv[0])))
 359                 goto out;
 360
 361         crypt_set_password_verify(cd, 1);
 362         crypt_set_timeout(cd, opt_timeout);
 363         if (opt_iteration_time)
 364                 crypt_set_iterarion_time(cd, opt_iteration_time);
 365
 366         if ((r = crypt_format(cd, CRYPT_LUKS1, cipher, cipher_mode, NULL, key, keysize, &params)))
 367                 goto out;
 368
 369         r = crypt_keyslot_add_by_volume_key(cd, opt_key_slot, key, keysize, NULL, 0);
 370 out:
 371
 372         crypt_free(cd);
 373         if (key) {
 374                 memset(key, 0, keysize);
 375                 free(key);
 376         }
 377         return r;
 378 }
 379
 380 static int action_luksFormat(int arg)
 381 {
 382         int r = 0; char *msg = NULL;
 383
 384         /* Avoid overwriting possibly wrong part of device than user requested by rejecting these options */
 385         if (opt_offset || opt_skip) {
 386                 log_err("Options --offset and --skip are not supported for luksFormat.\n");
 387                 return -EINVAL;
 388         }
 389
 390         if(asprintf(&msg, _("This will overwrite data on %s irrevocably."), action_argv[0]) == -1) {
 391                 log_err(_("memory allocation error in action_luksFormat"));
 392                 return -ENOMEM;
 393         }
 394         r = yesDialog(msg);
 395         free(msg);
 396
 397         if (!r)
 398                 return -EINVAL;
 399
 400         if (opt_master_key_file)
 401                 return _action_luksFormat_useMK();
 402         else
 403                 return _action_luksFormat_generateMK();
 404 }
 405
 406 static int action_luksOpen(int arg)
 407 {
 408         struct crypt_options options = {
 409                 .name = action_argv[1],
 410                 .device = action_argv[0],
 411                 .key_file = opt_key_file,
 412                 .key_size = opt_key_file ? (opt_key_size / 8) : 0, /* limit bytes read from keyfile */
 413                 .timeout = opt_timeout,
 414                 .tries = opt_key_file ? 1 : opt_tries, /* verify is usefull only for tty */
 415                 .icb = &cmd_icb,
 416         };
 417
 418         if (opt_readonly)
 419                 options.flags |= CRYPT_FLAG_READONLY;
 420         if (opt_non_exclusive)
 421                 log_err(_("Obsolete option --non-exclusive is ignored.\n"));
 422
 423         return crypt_luksOpen(&options);
 424 }
 425
 426 static int action_luksDelKey(int arg)
 427 {
 428         log_err("luksDelKey is a deprecated action name.\nPlease use luksKillSlot.\n");
 429         return action_luksKillSlot(arg);
 430 }
 431
 432 static int action_luksKillSlot(int arg)
 433 {
 434         struct crypt_options options = {
 435                 .device = action_argv[0],
 436                 .key_slot = atoi(action_argv[1]),
 437                 .key_file = opt_key_file,
 438                 .timeout = opt_timeout,
 439                 .flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
 440                 .icb = &cmd_icb,
 441         };
 442
 443         return crypt_luksKillSlot(&options);
 444 }
 445
 446 static int action_luksRemoveKey(int arg)
 447 {
 448         struct crypt_options options = {
 449                 .device = action_argv[0],
 450                 .new_key_file = action_argc>1?action_argv[1]:NULL,
 451                 .key_file = opt_key_file,
 452                 .timeout = opt_timeout,
 453                 .flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
 454                 .icb = &cmd_icb,
 455         };
 456
 457         return crypt_luksRemoveKey(&options);
 458 }
 459
 460 static int _action_luksAddKey_useMK()
 461 {
 462         int r = -EINVAL, keysize;
 463         char *key = NULL;
 464         struct crypt_device *cd = NULL;
 465
 466         if ((r = crypt_init(&cd, action_argv[0])))
 467                 goto out;
 468
 469         if ((r = crypt_load(cd, CRYPT_LUKS1, NULL)))
 470                 goto out;
 471
 472         keysize = crypt_get_volume_key_size(cd);
 473         crypt_set_password_verify(cd, 1);
 474         crypt_set_timeout(cd, opt_timeout);
 475         if (opt_iteration_time)
 476                 crypt_set_iterarion_time(cd, opt_iteration_time);
 477
 478         if (_read_mk(opt_master_key_file, &key, keysize) < 0)
 479                 goto out;
 480
 481         r = crypt_keyslot_add_by_volume_key(cd, opt_key_slot, key, keysize, NULL, 0);
 482 out:
 483         crypt_free(cd);
 484         if (key) {
 485                 memset(key, 0, keysize);
 486                 free(key);
 487         }
 488         return r;
 489 }
 490
 491 static int action_luksAddKey(int arg)
 492 {
 493         struct crypt_options options = {
 494                 .device = action_argv[0],
 495                 .new_key_file = action_argc>1?action_argv[1]:NULL,
 496                 .key_file = opt_key_file,
 497                 .key_slot = opt_key_slot,
 498                 .flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE : 0),
 499                 .iteration_time = opt_iteration_time,
 500                 .timeout = opt_timeout,
 501                 .icb = &cmd_icb,
 502         };
 503
 504         if (opt_master_key_file)
 505                 return _action_luksAddKey_useMK();
 506         else
 507                 return crypt_luksAddKey(&options);
 508 }
 509
 510 static int action_isLuks(int arg)
 511 {
 512         struct crypt_options options = {
 513                 .device = action_argv[0],
 514                 .icb = &cmd_icb,
 515         };
 516
 517         return crypt_isLuks(&options);
 518 }
 519
 520 static int action_luksUUID(int arg)
 521 {
 522         struct crypt_options options = {
 523                 .device = action_argv[0],
 524                 .icb = &cmd_icb,
 525         };
 526
 527         return crypt_luksUUID(&options);
 528 }
 529
 530 static int action_luksDump(int arg)
 531 {
 532         struct crypt_options options = {
 533                 .device = action_argv[0],
 534                 .icb = &cmd_icb,
 535         };
 536
 537         return crypt_luksDump(&options);
 538 }
 539
 540 static int action_luksSuspend(int arg)
 541 {
 542         struct crypt_device *cd = NULL;
 543         int r;
 544
 545         r = crypt_init_by_name(&cd, action_argv[0]);
 546         if (!r)
 547                 r = crypt_suspend(cd, action_argv[0]);
 548
 549         crypt_free(cd);
 550         return r;
 551 }
 552
 553 static int action_luksResume(int arg)
 554 {
 555         struct crypt_device *cd = NULL;
 556         int r;
 557
 558         if ((r = crypt_init_by_name(&cd, action_argv[0])))
 559                 goto out;
 560
 561         if ((r = crypt_load(cd, CRYPT_LUKS1, NULL)))
 562                 goto out;
 563
 564         if (opt_key_file)
 565                 r = crypt_resume_by_keyfile(cd, action_argv[0], CRYPT_ANY_SLOT,
 566                                             opt_key_file, opt_key_size / 8);
 567         else
 568                 r = crypt_resume_by_passphrase(cd, action_argv[0], CRYPT_ANY_SLOT,
 569                                                NULL, 0);
 570 out:
 571         crypt_free(cd);
 572         return r;
 573 }
 574
 575 static int action_luksBackup(int arg)
 576 {
 577         struct crypt_device *cd = NULL;
 578         int r;
 579
 580         if (!opt_header_backup_file) {
 581                 log_err(_("Option --header-backup-file is required.\n"));
 582                 return -EINVAL;
 583         }
 584
 585         if ((r = crypt_init(&cd, action_argv[0])))
 586                 goto out;
 587
 588         crypt_set_log_callback(cd, _log, NULL);
 589         crypt_set_confirm_callback(cd, _yesDialog, NULL);
 590
 591         r = crypt_header_backup(cd, CRYPT_LUKS1, opt_header_backup_file);
 592 out:
 593         crypt_free(cd);
 594         return r;
 595 }
 596
 597 static int action_luksRestore(int arg)
 598 {
 599         struct crypt_device *cd = NULL;
 600         int r = 0;
 601
 602         if (!opt_header_backup_file) {
 603                 log_err(_("Option --header-backup-file is required.\n"));
 604                 return -EINVAL;
 605         }
 606
 607         if ((r = crypt_init(&cd, action_argv[0])))
 608                 goto out;
 609
 610         crypt_set_log_callback(cd, _log, NULL);
 611         crypt_set_confirm_callback(cd, _yesDialog, NULL);
 612         r = crypt_header_restore(cd, CRYPT_LUKS1, opt_header_backup_file);
 613 out:
 614         crypt_free(cd);
 615         return r;
 616 }
 617
 618 static void usage(poptContext popt_context, int exitcode,
 619                   const char *error, const char *more)
 620 {
 621         poptPrintUsage(popt_context, stderr, 0);
 622         if (error)
 623                 log_err("%s: %s\n", more, error);
 624         exit(exitcode);
 625 }
 626
 627 static void help(poptContext popt_context, enum poptCallbackReason reason,
 628                  struct poptOption *key, const char * arg, void *data)
 629 {
 630         if (key->shortName == '?') {
 631                 struct action_type *action;
 632
 633                 log_std("%s\n",PACKAGE_STRING);
 634
 635                 poptPrintHelp(popt_context, stdout, 0);
 636
 637                 log_std(_("\n"
 638                          "<action> is one of:\n"));
 639
 640                 for(action = action_types; action->type; action++)
 641                         log_std("\t%s %s - %s\n", action->type, _(action->arg_desc), _(action->desc));
 642
 643                 log_std(_("\n"
 644                          "<name> is the device to create under %s\n"
 645                          "<device> is the encrypted device\n"
 646                          "<key slot> is the LUKS key slot number to modify\n"
 647                          "<key file> optional key file for the new key for luksAddKey action\n"),
 648                         crypt_get_dir());
 649                 exit(0);
 650         } else
 651                 usage(popt_context, 0, NULL, NULL);
 652 }
 653
 654 void set_debug_level(int level);
 655
 656 static void _dbg_version_and_cmd(int argc, char **argv)
 657 {
 658         int i;
 659
 660         log_std("# %s %s processing \"", PACKAGE_NAME, PACKAGE_VERSION);
 661         for (i = 0; i < argc; i++) {
 662                 if (i)
 663                         log_std(" ");
 664                 log_std(argv[i]);
 665         }
 666         log_std("\"\n");
 667 }
 668
 669 static int run_action(struct action_type *action)
 670 {
 671         int r;
 672
 673         if (action->required_memlock)
 674                 crypt_memory_lock(NULL, 1);
 675
 676         r = action->handler(action->arg);
 677
 678         if (action->required_memlock)
 679                 crypt_memory_lock(NULL, 0);
 680
 681         show_status(r);
 682
 683         return r;
 684 }
 685
 686 int main(int argc, char **argv)
 687 {
 688         static char *popt_tmp;
 689         static struct poptOption popt_help_options[] = {
 690                 { NULL,    '\0', POPT_ARG_CALLBACK, help, 0, NULL,                         NULL },
 691                 { "help",  '?',  POPT_ARG_NONE,     NULL, 0, N_("Show this help message"), NULL },
 692                 { "usage", '\0', POPT_ARG_NONE,     NULL, 0, N_("Display brief usage"),    NULL },
 693                 POPT_TABLEEND
 694         };
 695         static struct poptOption popt_options[] = {
 696                 { NULL,                '\0', POPT_ARG_INCLUDE_TABLE,                      popt_help_options,      0, N_("Help options:"),                                                   NULL },
 697                 { "verbose",           'v',  POPT_ARG_NONE,                               &opt_verbose,           0, N_("Shows more detailed error messages"),                              NULL },
 698                 { "debug",             '\0', POPT_ARG_NONE,                               &opt_debug,             0, N_("Show debug messages"),                                             NULL },
 699                 { "cipher",            'c',  POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_cipher,            0, N_("The cipher used to encrypt the disk (see /proc/crypto)"),          NULL },
 700                 { "hash",              'h',  POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_hash,              0, N_("The hash used to create the encryption key from the passphrase"),  NULL },
 701                 { "verify-passphrase", 'y',  POPT_ARG_NONE,                               &opt_verify_passphrase, 0, N_("Verifies the passphrase by asking for it twice"),                  NULL },
 702                 { "key-file",          'd',  POPT_ARG_STRING,                             &opt_key_file,          0, N_("Read the key from a file (can be /dev/random)"),                   NULL },
 703                 { "master-key-file",  '\0',  POPT_ARG_STRING,                             &opt_master_key_file,   0, N_("Read the volume (master) key from file."),                         NULL },
 704                 { "key-size",          's',  POPT_ARG_INT    | POPT_ARGFLAG_SHOW_DEFAULT, &opt_key_size,          0, N_("The size of the encryption key"),                                  N_("BITS") },
 705                 { "key-slot",          'S',  POPT_ARG_INT,                                &opt_key_slot,          0, N_("Slot number for new key (default is first free)"),      NULL },
 706                 { "size",              'b',  POPT_ARG_STRING,                             &popt_tmp,              1, N_("The size of the device"),                                          N_("SECTORS") },
 707                 { "offset",            'o',  POPT_ARG_STRING,                             &popt_tmp,              2, N_("The start offset in the backend device"),                          N_("SECTORS") },
 708                 { "skip",              'p',  POPT_ARG_STRING,                             &popt_tmp,              3, N_("How many sectors of the encrypted data to skip at the beginning"), N_("SECTORS") },
 709                 { "readonly",          'r',  POPT_ARG_NONE,                               &opt_readonly,          0, N_("Create a readonly mapping"),                                       NULL },
 710                 { "iter-time",         'i',  POPT_ARG_INT,                                &opt_iteration_time,    0, N_("PBKDF2 iteration time for LUKS (in ms)"),
 711                   N_("msecs") },
 712                 { "batch-mode",        'q',  POPT_ARG_NONE,                               &opt_batch_mode,        0, N_("Do not ask for confirmation"),                                     NULL },
 713                 { "version",        '\0',  POPT_ARG_NONE,                                 &opt_version_mode,        0, N_("Print package version"),                                     NULL },
 714                 { "timeout",           't',  POPT_ARG_INT,                                &opt_timeout,           0, N_("Timeout for interactive passphrase prompt (in seconds)"),          N_("secs") },
 715                 { "tries",             'T',  POPT_ARG_INT,                                &opt_tries,             0, N_("How often the input of the passphrase canbe retried"),            NULL },
 716                 { "align-payload",     '\0',  POPT_ARG_INT,                               &opt_align_payload,     0, N_("Align payload at <n> sector boundaries - for luksFormat"),         N_("SECTORS") },
 717                 { "non-exclusive",     '\0',  POPT_ARG_NONE,                              &opt_non_exclusive,     0, N_("Allows non-exclusive access for luksOpen, WARNING see manpage."),        NULL },
 718                 { "header-backup-file",'\0',  POPT_ARG_STRING,                            &opt_header_backup_file,0, N_("File with LUKS header and keyslots backup."),        NULL },
 719                 POPT_TABLEEND
 720         };
 721         poptContext popt_context;
 722         struct action_type *action;
 723         char *aname;
 724         int r;
 725         const char *null_action_argv[] = {NULL};
 726
 727         crypt_set_log_callback(NULL, _log, NULL);
 728
 729         setlocale(LC_ALL, "");
 730         bindtextdomain(PACKAGE, LOCALEDIR);
 731         textdomain(PACKAGE);
 732
 733         popt_context = poptGetContext(PACKAGE, argc, (const char **)argv,
 734                                       popt_options, 0);
 735         poptSetOtherOptionHelp(popt_context,
 736                                N_("[OPTION...] <action> <action-specific>]"));
 737
 738         while((r = poptGetNextOpt(popt_context)) > 0) {
 739                 unsigned long long ull_value;
 740                 char *endp;
 741
 742                 ull_value = strtoull(popt_tmp, &endp, 0);
 743                 if (*endp || !*popt_tmp)
 744                         r = POPT_ERROR_BADNUMBER;
 745
 746                 switch(r) {
 747                         case 1:
 748                                 opt_size = ull_value;
 749                                 break;
 750                         case 2:
 751                                 opt_offset = ull_value;
 752                                 break;
 753                         case 3:
 754                                 opt_skip = ull_value;
 755                                 break;
 756                 }
 757
 758                 if (r < 0)
 759                         break;
 760         }
 761
 762         if (r < -1)
 763                 usage(popt_context, 1, poptStrerror(r),
 764                       poptBadOption(popt_context, POPT_BADOPTION_NOALIAS));
 765         if (opt_version_mode) {
 766                 log_std("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
 767                 exit(0);
 768         }
 769
 770         if (opt_key_size % 8)
 771                 usage(popt_context, 1,
 772                       _("Key size must be a multiple of 8 bits"),
 773                       poptGetInvocationName(popt_context));
 774
 775         if (!(aname = (char *)poptGetArg(popt_context)))
 776                 usage(popt_context, 1, _("Argument <action> missing."),
 777                       poptGetInvocationName(popt_context));
 778         for(action = action_types; action->type; action++)
 779                 if (strcmp(action->type, aname) == 0)
 780                         break;
 781         if (!action->type)
 782                 usage(popt_context, 1, _("Unknown action."),
 783                       poptGetInvocationName(popt_context));
 784
 785         action_argc = 0;
 786         action_argv = poptGetArgs(popt_context);
 787         /* Make return values of poptGetArgs more consistent in case of remaining argc = 0 */
 788         if(!action_argv)
 789                 action_argv = null_action_argv;
 790
 791         /* Count args, somewhat unnice, change? */
 792         while(action_argv[action_argc] != NULL)
 793                 action_argc++;
 794
 795         if(action_argc < action->required_action_argc) {
 796                 char buf[128];
 797                 snprintf(buf, 128,_("%s: requires %s as arguments"), action->type, action->arg_desc);
 798                 usage(popt_context, 1, buf,
 799                       poptGetInvocationName(popt_context));
 800         }
 801
 802         if (opt_debug) {
 803                 opt_verbose = 1;
 804                 crypt_set_debug_level(-1);
 805                 _dbg_version_and_cmd(argc, argv);
 806         }
 807
 808         return run_action(action);
 809 }