git.ozlabs.org Git - ccan/blob - ccan/tdb2/tools/tdb2tool.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba database functions
   4    Copyright (C) Andrew Tridgell              1999-2000
   5    Copyright (C) Paul `Rusty' Russell              2000
   6    Copyright (C) Jeremy Allison                    2000
   7    Copyright (C) Andrew Esh                        2001
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "tdb2.h"
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <ctype.h>
  27 #include <sys/time.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <fcntl.h>
  31 #include <errno.h>
  32 #include <string.h>
  33 #include <stdarg.h>
  34
  35 static int do_command(void);
  36 const char *cmdname;
  37 char *arg1, *arg2;
  38 size_t arg1len, arg2len;
  39 int bIterate = 0;
  40 char *line;
  41 TDB_DATA iterate_kbuf;
  42 char cmdline[1024];
  43 static int disable_mmap;
  44
  45 enum commands {
  46         CMD_CREATE_TDB,
  47         CMD_OPEN_TDB,
  48         CMD_TRANSACTION_START,
  49         CMD_TRANSACTION_COMMIT,
  50         CMD_TRANSACTION_CANCEL,
  51         CMD_ERASE,
  52         CMD_DUMP,
  53         CMD_INSERT,
  54         CMD_MOVE,
  55         CMD_STORE,
  56         CMD_SHOW,
  57         CMD_KEYS,
  58         CMD_HEXKEYS,
  59         CMD_DELETE,
  60 #if 0
  61         CMD_LIST_HASH_FREE,
  62         CMD_LIST_FREE,
  63 #endif
  64         CMD_INFO,
  65         CMD_MMAP,
  66         CMD_SPEED,
  67         CMD_FIRST,
  68         CMD_NEXT,
  69         CMD_SYSTEM,
  70         CMD_CHECK,
  71         CMD_QUIT,
  72         CMD_HELP
  73 };
  74
  75 typedef struct {
  76         const char *name;
  77         enum commands cmd;
  78 } COMMAND_TABLE;
  79
  80 COMMAND_TABLE cmd_table[] = {
  81         {"create",      CMD_CREATE_TDB},
  82         {"open",        CMD_OPEN_TDB},
  83 #if 0
  84         {"transaction_start",   CMD_TRANSACTION_START},
  85         {"transaction_commit",  CMD_TRANSACTION_COMMIT},
  86         {"transaction_cancel",  CMD_TRANSACTION_CANCEL},
  87 #endif
  88         {"erase",       CMD_ERASE},
  89         {"dump",        CMD_DUMP},
  90         {"insert",      CMD_INSERT},
  91         {"move",        CMD_MOVE},
  92         {"store",       CMD_STORE},
  93         {"show",        CMD_SHOW},
  94         {"keys",        CMD_KEYS},
  95         {"hexkeys",     CMD_HEXKEYS},
  96         {"delete",      CMD_DELETE},
  97 #if 0
  98         {"list",        CMD_LIST_HASH_FREE},
  99         {"free",        CMD_LIST_FREE},
 100 #endif
 101         {"info",        CMD_INFO},
 102         {"speed",       CMD_SPEED},
 103         {"mmap",        CMD_MMAP},
 104         {"first",       CMD_FIRST},
 105         {"1",           CMD_FIRST},
 106         {"next",        CMD_NEXT},
 107         {"n",           CMD_NEXT},
 108         {"check",       CMD_CHECK},
 109         {"quit",        CMD_QUIT},
 110         {"q",           CMD_QUIT},
 111         {"!",           CMD_SYSTEM},
 112         {NULL,          CMD_HELP}
 113 };
 114
 115 struct timeval tp1,tp2;
 116
 117 static void _start_timer(void)
 118 {
 119         gettimeofday(&tp1,NULL);
 120 }
 121
 122 static double _end_timer(void)
 123 {
 124         gettimeofday(&tp2,NULL);
 125         return((tp2.tv_sec - tp1.tv_sec) +
 126                (tp2.tv_usec - tp1.tv_usec)*1.0e-6);
 127 }
 128
 129 static void tdb_log(struct tdb_context *tdb,
 130                     enum tdb_log_level level,
 131                     enum TDB_ERROR ecode,
 132                     const char *message,
 133                     void *data)
 134 {
 135         fprintf(stderr, "tdb:%s:%s:%s\n",
 136                 tdb_name(tdb), tdb_errorstr(ecode), message);
 137 }
 138
 139 /* a tdb tool for manipulating a tdb database */
 140
 141 static struct tdb_context *tdb;
 142
 143 static int print_rec(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
 144 static int print_key(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
 145 static int print_hexkey(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
 146
 147 static void print_asc(const char *buf,int len)
 148 {
 149         int i;
 150
 151         /* We're probably printing ASCII strings so don't try to display
 152            the trailing NULL character. */
 153
 154         if (buf[len - 1] == 0)
 155                 len--;
 156
 157         for (i=0;i<len;i++)
 158                 printf("%c",isprint(buf[i])?buf[i]:'.');
 159 }
 160
 161 static void print_data(const char *buf,int len)
 162 {
 163         int i=0;
 164         if (len<=0) return;
 165         printf("[%03X] ",i);
 166         for (i=0;i<len;) {
 167                 printf("%02X ",(int)((unsigned char)buf[i]));
 168                 i++;
 169                 if (i%8 == 0) printf(" ");
 170                 if (i%16 == 0) {
 171                         print_asc(&buf[i-16],8); printf(" ");
 172                         print_asc(&buf[i-8],8); printf("\n");
 173                         if (i<len) printf("[%03X] ",i);
 174                 }
 175         }
 176         if (i%16) {
 177                 int n;
 178
 179                 n = 16 - (i%16);
 180                 printf(" ");
 181                 if (n>8) printf(" ");
 182                 while (n--) printf("   ");
 183
 184                 n = i%16;
 185                 if (n > 8) n = 8;
 186                 print_asc(&buf[i-(i%16)],n); printf(" ");
 187                 n = (i%16) - n;
 188                 if (n>0) print_asc(&buf[i-n],n);
 189                 printf("\n");
 190         }
 191 }
 192
 193 static void help(void)
 194 {
 195         printf("\n"
 196 "tdbtool: \n"
 197 "  create    dbname     : create a database\n"
 198 "  open      dbname     : open an existing database\n"
 199 "  openjh    dbname     : open an existing database (jenkins hash)\n"
 200 "  transaction_start    : start a transaction\n"
 201 "  transaction_commit   : commit a transaction\n"
 202 "  transaction_cancel   : cancel a transaction\n"
 203 "  erase                : erase the database\n"
 204 "  dump                 : dump the database as strings\n"
 205 "  keys                 : dump the database keys as strings\n"
 206 "  hexkeys              : dump the database keys as hex values\n"
 207 "  info                 : print summary info about the database\n"
 208 "  insert    key  data  : insert a record\n"
 209 "  move      key  file  : move a record to a destination tdb\n"
 210 "  store     key  data  : store a record (replace)\n"
 211 "  show      key        : show a record by key\n"
 212 "  delete    key        : delete a record by key\n"
 213 #if 0
 214 "  list                 : print the database hash table and freelist\n"
 215 "  free                 : print the database freelist\n"
 216 #endif
 217 "  check                : check the integrity of an opened database\n"
 218 "  speed                : perform speed tests on the database\n"
 219 "  ! command            : execute system command\n"
 220 "  1 | first            : print the first record\n"
 221 "  n | next             : print the next record\n"
 222 "  q | quit             : terminate\n"
 223 "  \\n                   : repeat 'next' command\n"
 224 "\n");
 225 }
 226
 227 static void terror(enum TDB_ERROR err, const char *why)
 228 {
 229         if (err != TDB_SUCCESS)
 230                 printf("%s:%s\n", tdb_errorstr(err), why);
 231         else
 232                 printf("%s\n", why);
 233 }
 234
 235 static void create_tdb(const char *tdbname)
 236 {
 237         union tdb_attribute log_attr;
 238         log_attr.base.attr = TDB_ATTRIBUTE_LOG;
 239         log_attr.base.next = NULL;
 240         log_attr.log.fn = tdb_log;
 241
 242         if (tdb) tdb_close(tdb);
 243         tdb = tdb_open(tdbname, (disable_mmap?TDB_NOMMAP:0),
 244                        O_RDWR | O_CREAT | O_TRUNC, 0600, &log_attr);
 245         if (!tdb) {
 246                 printf("Could not create %s: %s\n", tdbname, strerror(errno));
 247         }
 248 }
 249
 250 static void open_tdb(const char *tdbname)
 251 {
 252         union tdb_attribute log_attr;
 253         log_attr.base.attr = TDB_ATTRIBUTE_LOG;
 254         log_attr.base.next = NULL;
 255         log_attr.log.fn = tdb_log;
 256
 257         if (tdb) tdb_close(tdb);
 258         tdb = tdb_open(tdbname, disable_mmap?TDB_NOMMAP:0, O_RDWR, 0600,
 259                        &log_attr);
 260         if (!tdb) {
 261                 printf("Could not open %s: %s\n", tdbname, strerror(errno));
 262         }
 263 }
 264
 265 static void insert_tdb(char *keyname, size_t keylen, char* data, size_t datalen)
 266 {
 267         TDB_DATA key, dbuf;
 268         enum TDB_ERROR ecode;
 269
 270         if ((keyname == NULL) || (keylen == 0)) {
 271                 terror(TDB_SUCCESS, "need key");
 272                 return;
 273         }
 274
 275         key.dptr = (unsigned char *)keyname;
 276         key.dsize = keylen;
 277         dbuf.dptr = (unsigned char *)data;
 278         dbuf.dsize = datalen;
 279
 280         ecode = tdb_store(tdb, key, dbuf, TDB_INSERT);
 281         if (ecode) {
 282                 terror(ecode, "insert failed");
 283         }
 284 }
 285
 286 static void store_tdb(char *keyname, size_t keylen, char* data, size_t datalen)
 287 {
 288         TDB_DATA key, dbuf;
 289         enum TDB_ERROR ecode;
 290
 291         if ((keyname == NULL) || (keylen == 0)) {
 292                 terror(TDB_SUCCESS, "need key");
 293                 return;
 294         }
 295
 296         if ((data == NULL) || (datalen == 0)) {
 297                 terror(TDB_SUCCESS, "need data");
 298                 return;
 299         }
 300
 301         key.dptr = (unsigned char *)keyname;
 302         key.dsize = keylen;
 303         dbuf.dptr = (unsigned char *)data;
 304         dbuf.dsize = datalen;
 305
 306         printf("Storing key:\n");
 307         print_rec(tdb, key, dbuf, NULL);
 308
 309         ecode = tdb_store(tdb, key, dbuf, TDB_REPLACE);
 310         if (ecode) {
 311                 terror(ecode, "store failed");
 312         }
 313 }
 314
 315 static void show_tdb(char *keyname, size_t keylen)
 316 {
 317         TDB_DATA key, dbuf;
 318         enum TDB_ERROR ecode;
 319
 320         if ((keyname == NULL) || (keylen == 0)) {
 321                 terror(TDB_SUCCESS, "need key");
 322                 return;
 323         }
 324
 325         key.dptr = (unsigned char *)keyname;
 326         key.dsize = keylen;
 327
 328         ecode = tdb_fetch(tdb, key, &dbuf);
 329         if (ecode) {
 330                 terror(ecode, "fetch failed");
 331                 return;
 332         }
 333
 334         print_rec(tdb, key, dbuf, NULL);
 335
 336         free( dbuf.dptr );
 337 }
 338
 339 static void delete_tdb(char *keyname, size_t keylen)
 340 {
 341         TDB_DATA key;
 342         enum TDB_ERROR ecode;
 343
 344         if ((keyname == NULL) || (keylen == 0)) {
 345                 terror(TDB_SUCCESS, "need key");
 346                 return;
 347         }
 348
 349         key.dptr = (unsigned char *)keyname;
 350         key.dsize = keylen;
 351
 352         ecode = tdb_delete(tdb, key);
 353         if (ecode) {
 354                 terror(ecode, "delete failed");
 355         }
 356 }
 357
 358 static void move_rec(char *keyname, size_t keylen, char* tdbname)
 359 {
 360         TDB_DATA key, dbuf;
 361         struct tdb_context *dst_tdb;
 362         enum TDB_ERROR ecode;
 363
 364         if ((keyname == NULL) || (keylen == 0)) {
 365                 terror(TDB_SUCCESS, "need key");
 366                 return;
 367         }
 368
 369         if ( !tdbname ) {
 370                 terror(TDB_SUCCESS, "need destination tdb name");
 371                 return;
 372         }
 373
 374         key.dptr = (unsigned char *)keyname;
 375         key.dsize = keylen;
 376
 377         ecode = tdb_fetch(tdb, key, &dbuf);
 378         if (ecode) {
 379                 terror(ecode, "fetch failed");
 380                 return;
 381         }
 382
 383         print_rec(tdb, key, dbuf, NULL);
 384
 385         dst_tdb = tdb_open(tdbname, 0, O_RDWR, 0600, NULL);
 386         if ( !dst_tdb ) {
 387                 terror(TDB_SUCCESS, "unable to open destination tdb");
 388                 return;
 389         }
 390
 391         ecode = tdb_store( dst_tdb, key, dbuf, TDB_REPLACE);
 392         if (ecode)
 393                 terror(ecode, "failed to move record");
 394         else
 395                 printf("record moved\n");
 396
 397         tdb_close( dst_tdb );
 398 }
 399
 400 static int print_rec(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
 401 {
 402         printf("\nkey %d bytes\n", (int)key.dsize);
 403         print_asc((const char *)key.dptr, key.dsize);
 404         printf("\ndata %d bytes\n", (int)dbuf.dsize);
 405         print_data((const char *)dbuf.dptr, dbuf.dsize);
 406         return 0;
 407 }
 408
 409 static int print_key(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
 410 {
 411         printf("key %d bytes: ", (int)key.dsize);
 412         print_asc((const char *)key.dptr, key.dsize);
 413         printf("\n");
 414         return 0;
 415 }
 416
 417 static int print_hexkey(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
 418 {
 419         printf("key %d bytes\n", (int)key.dsize);
 420         print_data((const char *)key.dptr, key.dsize);
 421         printf("\n");
 422         return 0;
 423 }
 424
 425 static int total_bytes;
 426
 427 static int traverse_fn(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
 428 {
 429         total_bytes += dbuf.dsize;
 430         return 0;
 431 }
 432
 433 static void info_tdb(void)
 434 {
 435         enum TDB_ERROR ecode;
 436         char *summary;
 437
 438         ecode = tdb_summary(tdb, TDB_SUMMARY_HISTOGRAMS, &summary);
 439
 440         if (ecode) {
 441                 terror(ecode, "Getting summary");
 442         } else {
 443                 printf("%s", summary);
 444                 free(summary);
 445         }
 446 }
 447
 448 static void speed_tdb(const char *tlimit)
 449 {
 450         unsigned timelimit = tlimit?atoi(tlimit):0;
 451         double t;
 452         int ops;
 453         if (timelimit == 0) timelimit = 5;
 454
 455         ops = 0;
 456         printf("Testing store speed for %u seconds\n", timelimit);
 457         _start_timer();
 458         do {
 459                 long int r = random();
 460                 TDB_DATA key, dbuf;
 461                 key = tdb_mkdata("store test", strlen("store test"));
 462                 dbuf.dptr = (unsigned char *)&r;
 463                 dbuf.dsize = sizeof(r);
 464                 tdb_store(tdb, key, dbuf, TDB_REPLACE);
 465                 t = _end_timer();
 466                 ops++;
 467         } while (t < timelimit);
 468         printf("%10.3f ops/sec\n", ops/t);
 469
 470         ops = 0;
 471         printf("Testing fetch speed for %u seconds\n", timelimit);
 472         _start_timer();
 473         do {
 474                 long int r = random();
 475                 TDB_DATA key, dbuf;
 476                 key = tdb_mkdata("store test", strlen("store test"));
 477                 dbuf.dptr = (unsigned char *)&r;
 478                 dbuf.dsize = sizeof(r);
 479                 tdb_fetch(tdb, key, &dbuf);
 480                 t = _end_timer();
 481                 ops++;
 482         } while (t < timelimit);
 483         printf("%10.3f ops/sec\n", ops/t);
 484
 485         ops = 0;
 486         printf("Testing transaction speed for %u seconds\n", timelimit);
 487         _start_timer();
 488         do {
 489                 long int r = random();
 490                 TDB_DATA key, dbuf;
 491                 key = tdb_mkdata("transaction test", strlen("transaction test"));
 492                 dbuf.dptr = (unsigned char *)&r;
 493                 dbuf.dsize = sizeof(r);
 494                 tdb_transaction_start(tdb);
 495                 tdb_store(tdb, key, dbuf, TDB_REPLACE);
 496                 tdb_transaction_commit(tdb);
 497                 t = _end_timer();
 498                 ops++;
 499         } while (t < timelimit);
 500         printf("%10.3f ops/sec\n", ops/t);
 501
 502         ops = 0;
 503         printf("Testing traverse speed for %u seconds\n", timelimit);
 504         _start_timer();
 505         do {
 506                 tdb_traverse(tdb, traverse_fn, NULL);
 507                 t = _end_timer();
 508                 ops++;
 509         } while (t < timelimit);
 510         printf("%10.3f ops/sec\n", ops/t);
 511 }
 512
 513 static void toggle_mmap(void)
 514 {
 515         disable_mmap = !disable_mmap;
 516         if (disable_mmap) {
 517                 printf("mmap is disabled\n");
 518         } else {
 519                 printf("mmap is enabled\n");
 520         }
 521 }
 522
 523 static char *tdb_getline(const char *prompt)
 524 {
 525         static char thisline[1024];
 526         char *p;
 527         fputs(prompt, stdout);
 528         thisline[0] = 0;
 529         p = fgets(thisline, sizeof(thisline)-1, stdin);
 530         if (p) p = strchr(p, '\n');
 531         if (p) *p = 0;
 532         return p?thisline:NULL;
 533 }
 534
 535 static int do_delete_fn(struct tdb_context *the_tdb, TDB_DATA key, TDB_DATA dbuf,
 536                      void *state)
 537 {
 538     return tdb_delete(the_tdb, key);
 539 }
 540
 541 static void first_record(struct tdb_context *the_tdb, TDB_DATA *pkey)
 542 {
 543         TDB_DATA dbuf;
 544         enum TDB_ERROR ecode;
 545         ecode = tdb_firstkey(the_tdb, pkey);
 546         if (!ecode)
 547                 ecode = tdb_fetch(the_tdb, *pkey, &dbuf);
 548         if (ecode) terror(ecode, "fetch failed");
 549         else {
 550                 print_rec(the_tdb, *pkey, dbuf, NULL);
 551         }
 552 }
 553
 554 static void next_record(struct tdb_context *the_tdb, TDB_DATA *pkey)
 555 {
 556         TDB_DATA dbuf;
 557         enum TDB_ERROR ecode;
 558         ecode = tdb_nextkey(the_tdb, pkey);
 559
 560         if (!ecode)
 561                 ecode = tdb_fetch(the_tdb, *pkey, &dbuf);
 562         if (ecode)
 563                 terror(ecode, "fetch failed");
 564         else
 565                 print_rec(the_tdb, *pkey, dbuf, NULL);
 566 }
 567
 568 static void check_db(struct tdb_context *the_tdb)
 569 {
 570         if (!the_tdb) {
 571                 printf("Error: No database opened!\n");
 572         } else {
 573                 if (tdb_check(the_tdb, NULL, NULL) != 0)
 574                         printf("Integrity check for the opened database failed.\n");
 575                 else
 576                         printf("Database integrity is OK.\n");
 577         }
 578 }
 579
 580 static int do_command(void)
 581 {
 582         COMMAND_TABLE *ctp = cmd_table;
 583         enum commands mycmd = CMD_HELP;
 584         int cmd_len;
 585
 586         if (cmdname && strlen(cmdname) == 0) {
 587                 mycmd = CMD_NEXT;
 588         } else {
 589                 while (ctp->name) {
 590                         cmd_len = strlen(ctp->name);
 591                         if (strncmp(ctp->name,cmdname,cmd_len) == 0) {
 592                                 mycmd = ctp->cmd;
 593                                 break;
 594                         }
 595                         ctp++;
 596                 }
 597         }
 598
 599         switch (mycmd) {
 600         case CMD_CREATE_TDB:
 601                 bIterate = 0;
 602                 create_tdb(arg1);
 603                 return 0;
 604         case CMD_OPEN_TDB:
 605                 bIterate = 0;
 606                 open_tdb(arg1);
 607                 return 0;
 608         case CMD_SYSTEM:
 609                 /* Shell command */
 610                 if (system(arg1) == -1) {
 611                         terror(TDB_SUCCESS, "system() call failed\n");
 612                 }
 613                 return 0;
 614         case CMD_QUIT:
 615                 return 1;
 616         default:
 617                 /* all the rest require a open database */
 618                 if (!tdb) {
 619                         bIterate = 0;
 620                         terror(TDB_SUCCESS, "database not open");
 621                         help();
 622                         return 0;
 623                 }
 624                 switch (mycmd) {
 625                 case CMD_TRANSACTION_START:
 626                         bIterate = 0;
 627                         tdb_transaction_start(tdb);
 628                         return 0;
 629                 case CMD_TRANSACTION_COMMIT:
 630                         bIterate = 0;
 631                         tdb_transaction_commit(tdb);
 632                         return 0;
 633                 case CMD_TRANSACTION_CANCEL:
 634                         bIterate = 0;
 635                         tdb_transaction_cancel(tdb);
 636                         return 0;
 637                 case CMD_ERASE:
 638                         bIterate = 0;
 639                         tdb_traverse(tdb, do_delete_fn, NULL);
 640                         return 0;
 641                 case CMD_DUMP:
 642                         bIterate = 0;
 643                         tdb_traverse(tdb, print_rec, NULL);
 644                         return 0;
 645                 case CMD_INSERT:
 646                         bIterate = 0;
 647                         insert_tdb(arg1, arg1len,arg2,arg2len);
 648                         return 0;
 649                 case CMD_MOVE:
 650                         bIterate = 0;
 651                         move_rec(arg1,arg1len,arg2);
 652                         return 0;
 653                 case CMD_STORE:
 654                         bIterate = 0;
 655                         store_tdb(arg1,arg1len,arg2,arg2len);
 656                         return 0;
 657                 case CMD_SHOW:
 658                         bIterate = 0;
 659                         show_tdb(arg1, arg1len);
 660                         return 0;
 661                 case CMD_KEYS:
 662                         tdb_traverse(tdb, print_key, NULL);
 663                         return 0;
 664                 case CMD_HEXKEYS:
 665                         tdb_traverse(tdb, print_hexkey, NULL);
 666                         return 0;
 667                 case CMD_DELETE:
 668                         bIterate = 0;
 669                         delete_tdb(arg1,arg1len);
 670                         return 0;
 671 #if 0
 672                 case CMD_LIST_HASH_FREE:
 673                         tdb_dump_all(tdb);
 674                         return 0;
 675                 case CMD_LIST_FREE:
 676                         tdb_printfreelist(tdb);
 677                         return 0;
 678 #endif
 679                 case CMD_INFO:
 680                         info_tdb();
 681                         return 0;
 682                 case CMD_SPEED:
 683                         speed_tdb(arg1);
 684                         return 0;
 685                 case CMD_MMAP:
 686                         toggle_mmap();
 687                         return 0;
 688                 case CMD_FIRST:
 689                         bIterate = 1;
 690                         first_record(tdb, &iterate_kbuf);
 691                         return 0;
 692                 case CMD_NEXT:
 693                         if (bIterate)
 694                                 next_record(tdb, &iterate_kbuf);
 695                         return 0;
 696                 case CMD_CHECK:
 697                         check_db(tdb);
 698                         return 0;
 699                 case CMD_HELP:
 700                         help();
 701                         return 0;
 702                 case CMD_CREATE_TDB:
 703                 case CMD_OPEN_TDB:
 704                 case CMD_SYSTEM:
 705                 case CMD_QUIT:
 706                         /*
 707                          * unhandled commands.  cases included here to avoid compiler
 708                          * warnings.
 709                          */
 710                         return 0;
 711                 }
 712         }
 713
 714         return 0;
 715 }
 716
 717 static char *convert_string(char *instring, size_t *sizep)
 718 {
 719         size_t length = 0;
 720         char *outp, *inp;
 721         char temp[3];
 722
 723         outp = inp = instring;
 724
 725         while (*inp) {
 726                 if (*inp == '\\') {
 727                         inp++;
 728                         if (*inp && strchr("0123456789abcdefABCDEF",(int)*inp)) {
 729                                 temp[0] = *inp++;
 730                                 temp[1] = '\0';
 731                                 if (*inp && strchr("0123456789abcdefABCDEF",(int)*inp)) {
 732                                         temp[1] = *inp++;
 733                                         temp[2] = '\0';
 734                                 }
 735                                 *outp++ = (char)strtol((const char *)temp,NULL,16);
 736                         } else {
 737                                 *outp++ = *inp++;
 738                         }
 739                 } else {
 740                         *outp++ = *inp++;
 741                 }
 742                 length++;
 743         }
 744         *sizep = length;
 745         return instring;
 746 }
 747
 748 int main(int argc, char *argv[])
 749 {
 750         cmdname = "";
 751         arg1 = NULL;
 752         arg1len = 0;
 753         arg2 = NULL;
 754         arg2len = 0;
 755
 756         if (argv[1]) {
 757                 cmdname = "open";
 758                 arg1 = argv[1];
 759                 do_command();
 760                 cmdname =  "";
 761                 arg1 = NULL;
 762         }
 763
 764         switch (argc) {
 765         case 1:
 766         case 2:
 767                 /* Interactive mode */
 768                 while ((cmdname = tdb_getline("tdb> "))) {
 769                         arg2 = arg1 = NULL;
 770                         if ((arg1 = strchr((const char *)cmdname,' ')) != NULL) {
 771                                 arg1++;
 772                                 arg2 = arg1;
 773                                 while (*arg2) {
 774                                         if (*arg2 == ' ') {
 775                                                 *arg2++ = '\0';
 776                                                 break;
 777                                         }
 778                                         if ((*arg2++ == '\\') && (*arg2 == ' ')) {
 779                                                 arg2++;
 780                                         }
 781                                 }
 782                         }
 783                         if (arg1) arg1 = convert_string(arg1,&arg1len);
 784                         if (arg2) arg2 = convert_string(arg2,&arg2len);
 785                         if (do_command()) break;
 786                 }
 787                 break;
 788         case 5:
 789                 arg2 = convert_string(argv[4],&arg2len);
 790         case 4:
 791                 arg1 = convert_string(argv[3],&arg1len);
 792         case 3:
 793                 cmdname = argv[2];
 794         default:
 795                 do_command();
 796                 break;
 797         }
 798
 799         if (tdb) tdb_close(tdb);
 800
 801         return 0;
 802 }