git.sur5r.net Git - openldap/blob - libraries/liblmdb/mdb_load.c

   1 /* mdb_load.c - memory-mapped database load tool */
   2 /*
   3  * Copyright 2011-2016 Howard Chu, Symas Corp.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted only as authorized by the OpenLDAP
   8  * Public License.
   9  *
  10  * A copy of this license is available in the file LICENSE in the
  11  * top-level directory of the distribution or, alternatively, at
  12  * <http://www.OpenLDAP.org/license.html>.
  13  */
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <errno.h>
  17 #include <string.h>
  18 #include <ctype.h>
  19 #include <unistd.h>
  20 #include "lmdb.h"
  21
  22 #define PRINT   1
  23 #define NOHDR   2
  24 static int mode;
  25
  26 static char *subname = NULL;
  27
  28 static mdb_size_t lineno;
  29 static int version;
  30
  31 static int flags;
  32
  33 static char *prog;
  34
  35 static int Eof;
  36
  37 static MDB_envinfo info;
  38
  39 static MDB_val kbuf, dbuf;
  40
  41 #define Yu      MDB_PRIy(u)
  42
  43 #define STRLENOF(s)     (sizeof(s)-1)
  44
  45 typedef struct flagbit {
  46         int bit;
  47         char *name;
  48         int len;
  49 } flagbit;
  50
  51 #define S(s)    s, STRLENOF(s)
  52
  53 flagbit dbflags[] = {
  54         { MDB_REVERSEKEY, S("reversekey") },
  55         { MDB_DUPSORT, S("dupsort") },
  56         { MDB_INTEGERKEY, S("integerkey") },
  57         { MDB_DUPFIXED, S("dupfixed") },
  58         { MDB_INTEGERDUP, S("integerdup") },
  59         { MDB_REVERSEDUP, S("reversedup") },
  60         { 0, NULL, 0 }
  61 };
  62
  63 static void readhdr(void)
  64 {
  65         char *ptr;
  66
  67         while (fgets(dbuf.mv_data, dbuf.mv_size, stdin) != NULL) {
  68                 lineno++;
  69                 if (!strncmp(dbuf.mv_data, "VERSION=", STRLENOF("VERSION="))) {
  70                         version=atoi((char *)dbuf.mv_data+STRLENOF("VERSION="));
  71                         if (version > 3) {
  72                                 fprintf(stderr, "%s: line %"Yu": unsupported VERSION %d\n",
  73                                         prog, lineno, version);
  74                                 exit(EXIT_FAILURE);
  75                         }
  76                 } else if (!strncmp(dbuf.mv_data, "HEADER=END", STRLENOF("HEADER=END"))) {
  77                         break;
  78                 } else if (!strncmp(dbuf.mv_data, "format=", STRLENOF("format="))) {
  79                         if (!strncmp((char *)dbuf.mv_data+STRLENOF("FORMAT="), "print", STRLENOF("print")))
  80                                 mode |= PRINT;
  81                         else if (strncmp((char *)dbuf.mv_data+STRLENOF("FORMAT="), "bytevalue", STRLENOF("bytevalue"))) {
  82                                 fprintf(stderr, "%s: line %"Yu": unsupported FORMAT %s\n",
  83                                         prog, lineno, (char *)dbuf.mv_data+STRLENOF("FORMAT="));
  84                                 exit(EXIT_FAILURE);
  85                         }
  86                 } else if (!strncmp(dbuf.mv_data, "database=", STRLENOF("database="))) {
  87                         ptr = memchr(dbuf.mv_data, '\n', dbuf.mv_size);
  88                         if (ptr) *ptr = '\0';
  89                         if (subname) free(subname);
  90                         subname = strdup((char *)dbuf.mv_data+STRLENOF("database="));
  91                 } else if (!strncmp(dbuf.mv_data, "type=", STRLENOF("type="))) {
  92                         if (strncmp((char *)dbuf.mv_data+STRLENOF("type="), "btree", STRLENOF("btree")))  {
  93                                 fprintf(stderr, "%s: line %"Yu": unsupported type %s\n",
  94                                         prog, lineno, (char *)dbuf.mv_data+STRLENOF("type="));
  95                                 exit(EXIT_FAILURE);
  96                         }
  97                 } else if (!strncmp(dbuf.mv_data, "mapaddr=", STRLENOF("mapaddr="))) {
  98                         int i;
  99                         ptr = memchr(dbuf.mv_data, '\n', dbuf.mv_size);
 100                         if (ptr) *ptr = '\0';
 101                         i = sscanf((char *)dbuf.mv_data+STRLENOF("mapaddr="), "%p", &info.me_mapaddr);
 102                         if (i != 1) {
 103                                 fprintf(stderr, "%s: line %"Yu": invalid mapaddr %s\n",
 104                                         prog, lineno, (char *)dbuf.mv_data+STRLENOF("mapaddr="));
 105                                 exit(EXIT_FAILURE);
 106                         }
 107                 } else if (!strncmp(dbuf.mv_data, "mapsize=", STRLENOF("mapsize="))) {
 108                         int i;
 109                         ptr = memchr(dbuf.mv_data, '\n', dbuf.mv_size);
 110                         if (ptr) *ptr = '\0';
 111                         i = sscanf((char *)dbuf.mv_data+STRLENOF("mapsize="),
 112                                 "%" MDB_SCNy(u), &info.me_mapsize);
 113                         if (i != 1) {
 114                                 fprintf(stderr, "%s: line %"Yu": invalid mapsize %s\n",
 115                                         prog, lineno, (char *)dbuf.mv_data+STRLENOF("mapsize="));
 116                                 exit(EXIT_FAILURE);
 117                         }
 118                 } else if (!strncmp(dbuf.mv_data, "maxreaders=", STRLENOF("maxreaders="))) {
 119                         int i;
 120                         ptr = memchr(dbuf.mv_data, '\n', dbuf.mv_size);
 121                         if (ptr) *ptr = '\0';
 122                         i = sscanf((char *)dbuf.mv_data+STRLENOF("maxreaders="), "%u", &info.me_maxreaders);
 123                         if (i != 1) {
 124                                 fprintf(stderr, "%s: line %"Yu": invalid maxreaders %s\n",
 125                                         prog, lineno, (char *)dbuf.mv_data+STRLENOF("maxreaders="));
 126                                 exit(EXIT_FAILURE);
 127                         }
 128                 } else {
 129                         int i;
 130                         for (i=0; dbflags[i].bit; i++) {
 131                                 if (!strncmp(dbuf.mv_data, dbflags[i].name, dbflags[i].len) &&
 132                                         ((char *)dbuf.mv_data)[dbflags[i].len] == '=') {
 133                                         flags |= dbflags[i].bit;
 134                                         break;
 135                                 }
 136                         }
 137                         if (!dbflags[i].bit) {
 138                                 ptr = memchr(dbuf.mv_data, '=', dbuf.mv_size);
 139                                 if (!ptr) {
 140                                         fprintf(stderr, "%s: line %"Yu": unexpected format\n",
 141                                                 prog, lineno);
 142                                         exit(EXIT_FAILURE);
 143                                 } else {
 144                                         *ptr = '\0';
 145                                         fprintf(stderr, "%s: line %"Yu": unrecognized keyword ignored: %s\n",
 146                                                 prog, lineno, (char *)dbuf.mv_data);
 147                                 }
 148                         }
 149                 }
 150         }
 151 }
 152
 153 static void badend(void)
 154 {
 155         fprintf(stderr, "%s: line %"Yu": unexpected end of input\n",
 156                 prog, lineno);
 157 }
 158
 159 static int unhex(unsigned char *c2)
 160 {
 161         int x, c;
 162         x = *c2++ & 0x4f;
 163         if (x & 0x40)
 164                 x -= 55;
 165         c = x << 4;
 166         x = *c2 & 0x4f;
 167         if (x & 0x40)
 168                 x -= 55;
 169         c |= x;
 170         return c;
 171 }
 172
 173 static int readline(MDB_val *out, MDB_val *buf)
 174 {
 175         unsigned char *c1, *c2, *end;
 176         size_t len, l2;
 177         int c;
 178
 179         if (!(mode & NOHDR)) {
 180                 c = fgetc(stdin);
 181                 if (c == EOF) {
 182                         Eof = 1;
 183                         return EOF;
 184                 }
 185                 if (c != ' ') {
 186                         lineno++;
 187                         if (fgets(buf->mv_data, buf->mv_size, stdin) == NULL) {
 188 badend:
 189                                 Eof = 1;
 190                                 badend();
 191                                 return EOF;
 192                         }
 193                         if (c == 'D' && !strncmp(buf->mv_data, "ATA=END", STRLENOF("ATA=END")))
 194                                 return EOF;
 195                         goto badend;
 196                 }
 197         }
 198         if (fgets(buf->mv_data, buf->mv_size, stdin) == NULL) {
 199                 Eof = 1;
 200                 return EOF;
 201         }
 202         lineno++;
 203
 204         c1 = buf->mv_data;
 205         len = strlen((char *)c1);
 206         l2 = len;
 207
 208         /* Is buffer too short? */
 209         while (c1[len-1] != '\n') {
 210                 buf->mv_data = realloc(buf->mv_data, buf->mv_size*2);
 211                 if (!buf->mv_data) {
 212                         Eof = 1;
 213                         fprintf(stderr, "%s: line %"Yu": out of memory, line too long\n",
 214                                 prog, lineno);
 215                         return EOF;
 216                 }
 217                 c1 = buf->mv_data;
 218                 c1 += l2;
 219                 if (fgets((char *)c1, buf->mv_size+1, stdin) == NULL) {
 220                         Eof = 1;
 221                         badend();
 222                         return EOF;
 223                 }
 224                 buf->mv_size *= 2;
 225                 len = strlen((char *)c1);
 226                 l2 += len;
 227         }
 228         c1 = c2 = buf->mv_data;
 229         len = l2;
 230         c1[--len] = '\0';
 231         end = c1 + len;
 232
 233         if (mode & PRINT) {
 234                 while (c2 < end) {
 235                         if (*c2 == '\\') {
 236                                 if (c2[1] == '\\') {
 237                                         c1++; c2 += 2;
 238                                 } else {
 239                                         if (c2+3 > end || !isxdigit(c2[1]) || !isxdigit(c2[2])) {
 240                                                 Eof = 1;
 241                                                 badend();
 242                                                 return EOF;
 243                                         }
 244                                         *c1++ = unhex(++c2);
 245                                         c2 += 2;
 246                                 }
 247                         } else {
 248                                 /* copies are redundant when no escapes were used */
 249                                 *c1++ = *c2++;
 250                         }
 251                 }
 252         } else {
 253                 /* odd length not allowed */
 254                 if (len & 1) {
 255                         Eof = 1;
 256                         badend();
 257                         return EOF;
 258                 }
 259                 while (c2 < end) {
 260                         if (!isxdigit(*c2) || !isxdigit(c2[1])) {
 261                                 Eof = 1;
 262                                 badend();
 263                                 return EOF;
 264                         }
 265                         *c1++ = unhex(c2);
 266                         c2 += 2;
 267                 }
 268         }
 269         c2 = out->mv_data = buf->mv_data;
 270         out->mv_size = c1 - c2;
 271
 272         return 0;
 273 }
 274
 275 static void usage(void)
 276 {
 277         fprintf(stderr, "usage: %s [-V] [-f input] [-n] [-s name] [-N] [-T] dbpath\n", prog);
 278         exit(EXIT_FAILURE);
 279 }
 280
 281 int main(int argc, char *argv[])
 282 {
 283         int i, rc;
 284         MDB_env *env;
 285         MDB_txn *txn;
 286         MDB_cursor *mc;
 287         MDB_dbi dbi;
 288         char *envname;
 289         int envflags = 0, putflags = 0;
 290         int dohdr = 0;
 291
 292         prog = argv[0];
 293
 294         if (argc < 2) {
 295                 usage();
 296         }
 297
 298         /* -f: load file instead of stdin
 299          * -n: use NOSUBDIR flag on env_open
 300          * -s: load into named subDB
 301          * -N: use NOOVERWRITE on puts
 302          * -T: read plaintext
 303          * -V: print version and exit
 304          */
 305         while ((i = getopt(argc, argv, "f:ns:NTV")) != EOF) {
 306                 switch(i) {
 307                 case 'V':
 308                         printf("%s\n", MDB_VERSION_STRING);
 309                         exit(0);
 310                         break;
 311                 case 'f':
 312                         if (freopen(optarg, "r", stdin) == NULL) {
 313                                 fprintf(stderr, "%s: %s: reopen: %s\n",
 314                                         prog, optarg, strerror(errno));
 315                                 exit(EXIT_FAILURE);
 316                         }
 317                         break;
 318                 case 'n':
 319                         envflags |= MDB_NOSUBDIR;
 320                         break;
 321                 case 's':
 322                         subname = strdup(optarg);
 323                         break;
 324                 case 'N':
 325                         putflags = MDB_NOOVERWRITE|MDB_NODUPDATA;
 326                         break;
 327                 case 'T':
 328                         mode |= NOHDR | PRINT;
 329                         break;
 330                 default:
 331                         usage();
 332                 }
 333         }
 334
 335         if (optind != argc - 1)
 336                 usage();
 337
 338         dbuf.mv_size = 4096;
 339         dbuf.mv_data = malloc(dbuf.mv_size);
 340
 341         if (!(mode & NOHDR))
 342                 readhdr();
 343
 344         envname = argv[optind];
 345         rc = mdb_env_create(&env);
 346         if (rc) {
 347                 fprintf(stderr, "mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc));
 348                 return EXIT_FAILURE;
 349         }
 350
 351         mdb_env_set_maxdbs(env, 2);
 352
 353         if (info.me_maxreaders)
 354                 mdb_env_set_maxreaders(env, info.me_maxreaders);
 355
 356         if (info.me_mapsize)
 357                 mdb_env_set_mapsize(env, info.me_mapsize);
 358
 359         if (info.me_mapaddr)
 360                 envflags |= MDB_FIXEDMAP;
 361
 362         rc = mdb_env_open(env, envname, envflags, 0664);
 363         if (rc) {
 364                 fprintf(stderr, "mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
 365                 goto env_close;
 366         }
 367
 368         kbuf.mv_size = mdb_env_get_maxkeysize(env) * 2 + 2;
 369         kbuf.mv_data = malloc(kbuf.mv_size);
 370
 371         while(!Eof) {
 372                 MDB_val key, data;
 373                 int batch = 0;
 374                 flags = 0;
 375
 376                 if (!dohdr) {
 377                         dohdr = 1;
 378                 } else if (!(mode & NOHDR))
 379                         readhdr();
 380
 381                 rc = mdb_txn_begin(env, NULL, 0, &txn);
 382                 if (rc) {
 383                         fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc));
 384                         goto env_close;
 385                 }
 386
 387                 rc = mdb_open(txn, subname, flags|MDB_CREATE, &dbi);
 388                 if (rc) {
 389                         fprintf(stderr, "mdb_open failed, error %d %s\n", rc, mdb_strerror(rc));
 390                         goto txn_abort;
 391                 }
 392
 393                 rc = mdb_cursor_open(txn, dbi, &mc);
 394                 if (rc) {
 395                         fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
 396                         goto txn_abort;
 397                 }
 398
 399                 while(1) {
 400                         rc = readline(&key, &kbuf);
 401                         if (rc)  /* rc == EOF */
 402                                 break;
 403
 404                         rc = readline(&data, &dbuf);
 405                         if (rc) {
 406                                 fprintf(stderr, "%s: line %"Yu": failed to read key value\n", prog, lineno);
 407                                 goto txn_abort;
 408                         }
 409
 410                         rc = mdb_cursor_put(mc, &key, &data, putflags);
 411                         if (rc == MDB_KEYEXIST && putflags)
 412                                 continue;
 413                         if (rc) {
 414                                 fprintf(stderr, "mdb_cursor_put failed, error %d %s\n", rc, mdb_strerror(rc));
 415                                 goto txn_abort;
 416                         }
 417                         batch++;
 418                         if (batch == 100) {
 419                                 rc = mdb_txn_commit(txn);
 420                                 if (rc) {
 421                                         fprintf(stderr, "%s: line %"Yu": txn_commit: %s\n",
 422                                                 prog, lineno, mdb_strerror(rc));
 423                                         goto env_close;
 424                                 }
 425                                 rc = mdb_txn_begin(env, NULL, 0, &txn);
 426                                 if (rc) {
 427                                         fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc));
 428                                         goto env_close;
 429                                 }
 430                                 rc = mdb_cursor_open(txn, dbi, &mc);
 431                                 if (rc) {
 432                                         fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
 433                                         goto txn_abort;
 434                                 }
 435                                 batch = 0;
 436                         }
 437                 }
 438                 rc = mdb_txn_commit(txn);
 439                 txn = NULL;
 440                 if (rc) {
 441                         fprintf(stderr, "%s: line %"Yu": txn_commit: %s\n",
 442                                 prog, lineno, mdb_strerror(rc));
 443                         goto env_close;
 444                 }
 445                 mdb_dbi_close(env, dbi);
 446         }
 447
 448 txn_abort:
 449         mdb_txn_abort(txn);
 450 env_close:
 451         mdb_env_close(env);
 452
 453         return rc ? EXIT_FAILURE : EXIT_SUCCESS;
 454 }