source4/utils/oLschema2ldif.c

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Simo Sorce 2005
   5
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 /*
  25  *  Name: ldb
  26  *
  27  *  Component: oLschema2ldif
  28  *
  29  *  Description: utility to convert an OpenLDAP schema into AD LDIF
  30  *
  31  *  Author: Simo Sorce
  32  */
  33
  34 #include "includes.h"
  35 #include "ldb.h"
  36 #include "dsdb/samdb/samdb.h"
  37 #include "../lib/crypto/sha256.h"
  38 #include "../librpc/gen_ndr/ndr_misc.h"
  39 #include "lib/cmdline/popt_common.h"
  40
  41 #define SCHEMA_UNKNOWN 0
  42 #define SCHEMA_NAME 1
  43 #define SCHEMA_SUP 2
  44 #define SCHEMA_STRUCTURAL 3
  45 #define SCHEMA_ABSTRACT 4
  46 #define SCHEMA_AUXILIARY 5
  47 #define SCHEMA_MUST 6
  48 #define SCHEMA_MAY 7
  49 #define SCHEMA_SINGLE_VALUE 8
  50 #define SCHEMA_EQUALITY 9
  51 #define SCHEMA_ORDERING 10
  52 #define SCHEMA_SUBSTR 11
  53 #define SCHEMA_SYNTAX 12
  54 #define SCHEMA_DESC 13
  55
  56 struct schema_conv {
  57         int count;
  58         int failures;
  59 };
  60
  61 struct schema_token {
  62         int type;
  63         char *value;
  64 };
  65
  66 struct ldb_context *ldb_ctx;
  67 struct ldb_dn *basedn;
  68
  69 static int check_braces(const char *string)
  70 {
  71         int b;
  72         char *c;
  73
  74         b = 0;
  75         if ((c = strchr(string, '(')) == NULL) {
  76                 return -1;
  77         }
  78         b++;
  79         c++;
  80         while (b) {
  81                 c = strpbrk(c, "()");
  82                 if (c == NULL) return 1;
  83                 if (*c == '(') b++;
  84                 if (*c == ')') {
  85                         b--;
  86                         if (*(c - 1) != ' ' && c && (*(c + 1) == '\0')) {
  87                                 return 2;
  88                         }
  89                 }
  90                 c++;
  91         }
  92         return 0;
  93 }
  94
  95 static char *skip_spaces(char *string) {
  96         return (string + strspn(string, " \t\n"));
  97 }
  98
  99 static int add_multi_string(struct ldb_message *msg, const char *attr, char *values)
 100 {
 101         char *c;
 102         char *s;
 103         int n;
 104
 105         c = skip_spaces(values);
 106         while (*c) {
 107                 n = strcspn(c, " \t$");
 108                 s = talloc_strndup(msg, c, n);
 109                 if (ldb_msg_add_string(msg, attr, s) != 0) {
 110                         return -1;
 111                 }
 112                 c += n;
 113                 c += strspn(c, " \t$");
 114         }
 115
 116         return 0;
 117 }
 118
 119 #define MSG_ADD_STRING(a, v) do { if (ldb_msg_add_string(msg, a, v) != 0) goto failed; } while(0)
 120 #define MSG_ADD_M_STRING(a, v) do { if (add_multi_string(msg, a, v) != 0) goto failed; } while(0)
 121
 122 static char *get_def_value(TALLOC_CTX *ctx, char **string)
 123 {
 124         char *c = *string;
 125         char *value;
 126         int n;
 127
 128         if (*c == '\'') {
 129                 c++;
 130                 n = strcspn(c, "\'");
 131                 value = talloc_strndup(ctx, c, n);
 132                 c += n;
 133                 c++; /* skip closing \' */
 134         } else {
 135                 n = strcspn(c, " \t\n");
 136                 value = talloc_strndup(ctx, c, n);
 137                 c += n;
 138         }
 139         *string = c;
 140
 141         return value;
 142 }
 143
 144 static struct schema_token *get_next_schema_token(TALLOC_CTX *ctx, char **string)
 145 {
 146         char *c = skip_spaces(*string);
 147         char *type;
 148         struct schema_token *token;
 149         int n;
 150
 151         token = talloc(ctx, struct schema_token);
 152
 153         n = strcspn(c, " \t\n");
 154         type = talloc_strndup(token, c, n);
 155         c += n;
 156         c = skip_spaces(c);
 157
 158         if (strcasecmp("NAME", type) == 0) {
 159                 talloc_free(type);
 160                 token->type = SCHEMA_NAME;
 161                 /* we do not support aliases so we get only the first name given and skip others */
 162                 if (*c == '(') {
 163                         char *s = strchr(c, ')');
 164                         if (s == NULL) return NULL;
 165                         s = skip_spaces(s);
 166                         *string = s;
 167
 168                         c++;
 169                         c = skip_spaces(c);
 170                 }
 171
 172                 token->value = get_def_value(ctx, &c);
 173
 174                 if (*string < c) { /* single name */
 175                         c = skip_spaces(c);
 176                         *string = c;
 177                 }
 178                 return token;
 179         }
 180         if (strcasecmp("SUP", type) == 0) {
 181                 talloc_free(type);
 182                 token->type = SCHEMA_SUP;
 183
 184                 if (*c == '(') {
 185                         c++;
 186                         n = strcspn(c, ")");
 187                         token->value = talloc_strndup(ctx, c, n);
 188                         c += n;
 189                         c++;
 190                 } else {
 191                         token->value = get_def_value(ctx, &c);
 192                 }
 193
 194                 c = skip_spaces(c);
 195                 *string = c;
 196                 return token;
 197         }
 198
 199         if (strcasecmp("STRUCTURAL", type) == 0) {
 200                 talloc_free(type);
 201                 token->type = SCHEMA_STRUCTURAL;
 202                 *string = c;
 203                 return token;
 204         }
 205
 206         if (strcasecmp("ABSTRACT", type) == 0) {
 207                 talloc_free(type);
 208                 token->type = SCHEMA_ABSTRACT;
 209                 *string = c;
 210                 return token;
 211         }
 212
 213         if (strcasecmp("AUXILIARY", type) == 0) {
 214                 talloc_free(type);
 215                 token->type = SCHEMA_AUXILIARY;
 216                 *string = c;
 217                 return token;
 218         }
 219
 220         if (strcasecmp("MUST", type) == 0) {
 221                 talloc_free(type);
 222                 token->type = SCHEMA_MUST;
 223
 224                 if (*c == '(') {
 225                         c++;
 226                         n = strcspn(c, ")");
 227                         token->value = talloc_strndup(ctx, c, n);
 228                         c += n;
 229                         c++;
 230                 } else {
 231                         token->value = get_def_value(ctx, &c);
 232                 }
 233
 234                 c = skip_spaces(c);
 235                 *string = c;
 236                 return token;
 237         }
 238
 239         if (strcasecmp("MAY", type) == 0) {
 240                 talloc_free(type);
 241                 token->type = SCHEMA_MAY;
 242
 243                 if (*c == '(') {
 244                         c++;
 245                         n = strcspn(c, ")");
 246                         token->value = talloc_strndup(ctx, c, n);
 247                         c += n;
 248                         c++;
 249                 } else {
 250                         token->value = get_def_value(ctx, &c);
 251                 }
 252
 253                 c = skip_spaces(c);
 254                 *string = c;
 255                 return token;
 256         }
 257
 258         if (strcasecmp("SINGLE-VALUE", type) == 0) {
 259                 talloc_free(type);
 260                 token->type = SCHEMA_SINGLE_VALUE;
 261                 *string = c;
 262                 return token;
 263         }
 264
 265         if (strcasecmp("EQUALITY", type) == 0) {
 266                 talloc_free(type);
 267                 token->type = SCHEMA_EQUALITY;
 268
 269                 token->value = get_def_value(ctx, &c);
 270
 271                 c = skip_spaces(c);
 272                 *string = c;
 273                 return token;
 274         }
 275
 276         if (strcasecmp("ORDERING", type) == 0) {
 277                 talloc_free(type);
 278                 token->type = SCHEMA_ORDERING;
 279
 280                 token->value = get_def_value(ctx, &c);
 281
 282                 c = skip_spaces(c);
 283                 *string = c;
 284                 return token;
 285         }
 286
 287         if (strcasecmp("SUBSTR", type) == 0) {
 288                 talloc_free(type);
 289                 token->type = SCHEMA_SUBSTR;
 290
 291                 token->value = get_def_value(ctx, &c);
 292
 293                 c = skip_spaces(c);
 294                 *string = c;
 295                 return token;
 296         }
 297
 298         if (strcasecmp("SYNTAX", type) == 0) {
 299                 talloc_free(type);
 300                 token->type = SCHEMA_SYNTAX;
 301
 302                 token->value = get_def_value(ctx, &c);
 303
 304                 c = skip_spaces(c);
 305                 *string = c;
 306                 return token;
 307         }
 308
 309         if (strcasecmp("DESC", type) == 0) {
 310                 talloc_free(type);
 311                 token->type = SCHEMA_DESC;
 312
 313                 token->value = get_def_value(ctx, &c);
 314
 315                 c = skip_spaces(c);
 316                 *string = c;
 317                 return token;
 318         }
 319
 320         token->type = SCHEMA_UNKNOWN;
 321         token->value = type;
 322         if (*c == ')') {
 323                 *string = c;
 324                 return token;
 325         }
 326         if (*c == '\'') {
 327                 c = strchr(++c, '\'');
 328                 c++;
 329         } else {
 330                 c += strcspn(c, " \t\n");
 331         }
 332         c = skip_spaces(c);
 333         *string = c;
 334
 335         return token;
 336 }
 337
 338 static struct ldb_message *process_entry(TALLOC_CTX *mem_ctx, const char *entry)
 339 {
 340         TALLOC_CTX *ctx;
 341         struct ldb_message *msg;
 342         struct schema_token *token;
 343         char *c, *s;
 344         int n;
 345
 346         SHA256_CTX sha256_context;
 347         uint8_t digest[SHA256_DIGEST_LENGTH];
 348
 349         struct GUID guid;
 350
 351         bool isAttribute = false;
 352         bool single_valued = false;
 353
 354         ctx = talloc_new(mem_ctx);
 355         if (ctx == NULL) {
 356                 return NULL;
 357         }
 358         msg = ldb_msg_new(ctx);
 359         if (msg == NULL) {
 360                 goto failed;
 361         }
 362
 363         ldb_msg_add_string(msg, "objectClass", "top");
 364
 365         c = talloc_strdup(ctx, entry);
 366         if (!c) return NULL;
 367
 368         c = skip_spaces(c);
 369
 370         switch (*c) {
 371         case 'a':
 372                 if (strncmp(c, "attributetype", 13) == 0) {
 373                         c += 13;
 374                         MSG_ADD_STRING("objectClass", "attributeSchema");
 375                         isAttribute = true;
 376                         break;
 377                 }
 378                 goto failed;
 379         case 'o':
 380                 if (strncmp(c, "objectclass", 11) == 0) {
 381                         c += 11;
 382                         MSG_ADD_STRING("objectClass", "classSchema");
 383                         break;
 384                 }
 385                 goto failed;
 386         default:
 387                 goto failed;
 388         }
 389
 390         c = strchr(c, '(');
 391         if (c == NULL) goto failed;
 392         c++;
 393
 394         c = skip_spaces(c);
 395
 396         /* get attributeID */
 397         n = strcspn(c, " \t");
 398         s = talloc_strndup(msg, c, n);
 399         if (isAttribute) {
 400                 MSG_ADD_STRING("attributeID", s);
 401         } else {
 402                 MSG_ADD_STRING("governsID", s);
 403         }
 404
 405         samba_SHA256_Init(&sha256_context);
 406         samba_SHA256_Update(&sha256_context, (uint8_t*)s, strlen(s));
 407         samba_SHA256_Final(digest, &sha256_context);
 408
 409         memcpy(&guid, digest, sizeof(struct GUID));
 410
 411         if (dsdb_msg_add_guid(msg, &guid, "schemaIdGuid") != 0) {
 412                 goto failed;
 413         }
 414
 415         c += n;
 416         c = skip_spaces(c);
 417
 418         while (*c != ')') {
 419                 token = get_next_schema_token(msg, &c);
 420                 if (!token) goto failed;
 421
 422                 switch (token->type) {
 423                 case SCHEMA_NAME:
 424                         MSG_ADD_STRING("cn", token->value);
 425                         MSG_ADD_STRING("name", token->value);
 426                         MSG_ADD_STRING("lDAPDisplayName", token->value);
 427                         msg->dn = ldb_dn_copy(msg, basedn);
 428                         ldb_dn_add_child_fmt(msg->dn, "CN=%s,CN=Schema,CN=Configuration", token->value);
 429                         break;
 430
 431                 case SCHEMA_SUP:
 432                         MSG_ADD_M_STRING("subClassOf", token->value);
 433                         break;
 434
 435                 case SCHEMA_STRUCTURAL:
 436                         MSG_ADD_STRING("objectClassCategory", "1");
 437                         break;
 438
 439                 case SCHEMA_ABSTRACT:
 440                         MSG_ADD_STRING("objectClassCategory", "2");
 441                         break;
 442
 443                 case SCHEMA_AUXILIARY:
 444                         MSG_ADD_STRING("objectClassCategory", "3");
 445                         break;
 446
 447                 case SCHEMA_MUST:
 448                         MSG_ADD_M_STRING("mustContain", token->value);
 449                         break;
 450
 451                 case SCHEMA_MAY:
 452                         MSG_ADD_M_STRING("mayContain", token->value);
 453                         break;
 454
 455                 case SCHEMA_SINGLE_VALUE:
 456                         single_valued = true;
 457                         break;
 458
 459                 case SCHEMA_EQUALITY:
 460                         /* TODO */
 461                         break;
 462
 463                 case SCHEMA_ORDERING:
 464                         /* TODO */
 465                         break;
 466
 467                 case SCHEMA_SUBSTR:
 468                         /* TODO */
 469                         break;
 470
 471                 case SCHEMA_SYNTAX:
 472                 {
 473                         char *syntax_oid;
 474                         const struct dsdb_syntax *map;
 475                         char *oMSyntax;
 476
 477                         n = strcspn(token->value, "{");
 478                         syntax_oid = talloc_strndup(ctx, token->value, n);
 479
 480                         map = find_syntax_map_by_standard_oid(syntax_oid);
 481                         if (!map) {
 482                                 break;
 483                         }
 484
 485                         MSG_ADD_STRING("attributeSyntax", map->attributeSyntax_oid);
 486
 487                         oMSyntax = talloc_asprintf(msg, "%d", map->oMSyntax);
 488                         MSG_ADD_STRING("oMSyntax", oMSyntax);
 489
 490                         break;
 491                 }
 492                 case SCHEMA_DESC:
 493                         MSG_ADD_STRING("description", token->value);
 494                         break;
 495
 496                 default:
 497                         fprintf(stderr, "Unknown Definition: %s\n", token->value);
 498                 }
 499         }
 500
 501         if (isAttribute) {
 502                 MSG_ADD_STRING("isSingleValued", single_valued ? "TRUE" : "FALSE");
 503         } else {
 504                 MSG_ADD_STRING("defaultObjectCategory", ldb_dn_get_linearized(msg->dn));
 505         }
 506
 507         talloc_steal(mem_ctx, msg);
 508         talloc_free(ctx);
 509         return msg;
 510
 511 failed:
 512         talloc_free(ctx);
 513         return NULL;
 514 }
 515
 516 static struct schema_conv process_file(FILE *in, FILE *out)
 517 {
 518         TALLOC_CTX *ctx;
 519         struct schema_conv ret;
 520         char *entry;
 521         int c, t, line;
 522         struct ldb_ldif ldif;
 523
 524         ldif.changetype = LDB_CHANGETYPE_NONE;
 525
 526         ctx = talloc_new(NULL);
 527
 528         ret.count = 0;
 529         ret.failures = 0;
 530         line = 0;
 531
 532         while ((c = fgetc(in)) != EOF) {
 533                 line++;
 534                 /* fprintf(stderr, "Parsing line %d\n", line); */
 535                 if (c == '#') {
 536                         do {
 537                                 c = fgetc(in);
 538                         } while (c != EOF && c != '\n');
 539                         continue;
 540                 }
 541                 if (c == '\n') {
 542                         continue;
 543                 }
 544
 545                 t = 0;
 546                 entry = talloc_array(ctx, char, 1024);
 547                 if (entry == NULL) exit(-1);
 548
 549                 do {
 550                         if (c == '\n') {
 551                                 int ret2 = 0;
 552                                 entry[t] = '\0';
 553                                 ret2 = check_braces(entry);
 554                                 if (ret2 == 0) {
 555                                         ret.count++;
 556                                         ldif.msg = process_entry(ctx, entry);
 557                                         if (ldif.msg == NULL) {
 558                                                 ret.failures++;
 559                                                 fprintf(stderr, "No valid msg from entry \n[%s]\n at line %d\n", entry, line);
 560                                                 break;
 561                                         }
 562                                         ldb_ldif_write_file(ldb_ctx, out, &ldif);
 563                                         break;
 564                                 }
 565                                 if (ret2 == 2) {
 566                                         fprintf(stderr, "Invalid entry %s, closing braces needs to be preceeded by a space\n", entry);
 567                                         ret.failures++;
 568                                         break;
 569                                 }
 570                                 line++;
 571                         } else {
 572                                 entry[t] = c;
 573                                 t++;
 574                         }
 575                         if ((t % 1023) == 0) {
 576                                 entry = talloc_realloc(ctx, entry, char, t + 1024);
 577                                 if (entry == NULL) exit(-1);
 578                         }
 579                 } while ((c = fgetc(in)) != EOF);
 580
 581                 if (c != '\n') {
 582                         entry[t] = '\0';
 583                         if (check_braces(entry) == 0) {
 584                                 ret.count++;
 585                                 ldif.msg = process_entry(ctx, entry);
 586                                 if (ldif.msg == NULL) {
 587                                         ret.failures++;
 588                                         fprintf(stderr, "No valid msg from entry \n[%s]\n at line %d\n", entry, line);
 589                                         break;
 590                                 }
 591                                 ldb_ldif_write_file(ldb_ctx, out, &ldif);
 592                         } else {
 593                                 fprintf(stderr, "malformed entry on line %d\n", line);
 594                                 ret.failures++;
 595                         }
 596                 }
 597
 598                 if (c == EOF) break;
 599         }
 600
 601         return ret;
 602 }
 603
 604 static struct options {
 605         const char *basedn;
 606         const char *input;
 607         const char *output;
 608 } options;
 609
 610 static struct poptOption popt_options[] = {
 611         POPT_AUTOHELP
 612         { "basedn",    'b', POPT_ARG_STRING, &options.basedn, 0, "base DN", "DN" },
 613         { "input", 'I', POPT_ARG_STRING, &options.input, 0,
 614           "inputfile of OpenLDAP style schema otherwise STDIN", "inputfile"},
 615         { "output", 'O', POPT_ARG_STRING, &options.output, 0,
 616           "outputfile otherwise STDOUT", "outputfile"},
 617         POPT_COMMON_VERSION
 618         { NULL }
 619 };
 620
 621
 622 static void usage(void)
 623 {
 624         poptContext pc;
 625         printf("Usage: oLschema2ldif <options>\n");
 626         printf("\nConvert OpenLDAP schema to AD-like LDIF format\n\n");
 627         printf("Converts records from an openLdap formatted schema to an ldif schema\n\n");
 628         pc = poptGetContext("oLschema2ldif", 0, NULL, popt_options,
 629                             POPT_CONTEXT_KEEP_FIRST);
 630         poptPrintHelp(pc, stdout, 0);
 631         exit(1);
 632 }
 633
 634
 635  int main(int argc, const char **argv)
 636 {
 637         TALLOC_CTX *ctx;
 638         struct schema_conv ret;
 639         FILE *in = stdin;
 640         FILE *out = stdout;
 641         poptContext pc;
 642         int opt;
 643
 644         ctx = talloc_new(NULL);
 645         ldb_ctx = ldb_init(ctx, NULL);
 646
 647         setenv("LDB_URL", "NONE", 1);
 648
 649         pc = poptGetContext(argv[0], argc, argv, popt_options,
 650                             POPT_CONTEXT_KEEP_FIRST);
 651
 652         while((opt = poptGetNextOpt(pc)) != -1) {
 653                 fprintf(stderr, "Invalid option %s: %s\n",
 654                         poptBadOption(pc, 0), poptStrerror(opt));
 655                 usage();
 656         }
 657
 658         if (options.basedn == NULL) {
 659                 printf("Base DN not specified\n");
 660                 usage();
 661                 exit(1);
 662         } else {
 663                 basedn = ldb_dn_new(ctx, ldb_ctx, options.basedn);
 664                 if ( ! ldb_dn_validate(basedn)) {
 665                         printf("Malformed Base DN\n");
 666                         usage();
 667                         exit(1);
 668                 }
 669         }
 670
 671         if (options.input) {
 672                 in = fopen(options.input, "r");
 673                 if (!in) {
 674                         perror(options.input);
 675                         usage();
 676                         exit(1);
 677                 }
 678         }
 679         if (options.output) {
 680                 out = fopen(options.output, "w");
 681                 if (!out) {
 682                         perror(options.output);
 683                         usage();
 684                         exit(1);
 685                 }
 686         }
 687
 688         ret = process_file(in, out);
 689
 690         fclose(in);
 691         fclose(out);
 692
 693         printf("Converted %d records with %d failures\n", ret.count, ret.failures);
 694
 695         return 0;
 696 }