git.sur5r.net Git - openldap/blob - servers/slapd/schema_check.c

   1 /* schema_check.c - routines to enforce schema definitions */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/ctype.h>
  13 #include <ac/string.h>
  14 #include <ac/socket.h>
  15
  16 #include "slap.h"
  17 #include "ldap_pvt.h"
  18
  19 static char * oc_check_required(
  20         Entry *e,
  21         ObjectClass *oc,
  22         struct berval *ocname );
  23
  24 /*
  25  * entry_schema_check - check that entry e conforms to the schema required
  26  * by its object class(es).
  27  *
  28  * returns 0 if so, non-zero otherwise.
  29  */
  30
  31 int
  32 entry_schema_check(
  33         Backend *be,
  34         Entry *e,
  35         Attribute *oldattrs,
  36         const char** text,
  37         char *textbuf, size_t textlen )
  38 {
  39         Attribute       *a, *asc, *aoc;
  40         ObjectClass *sc, *oc;
  41 #ifdef SLAP_EXTENDED_SCHEMA
  42         AttributeType *at;
  43         ContentRule *cr;
  44 #endif
  45         int     rc, i;
  46         struct berval nsc;
  47         AttributeDescription *ad_structuralObjectClass
  48                 = slap_schema.si_ad_structuralObjectClass;
  49         AttributeDescription *ad_objectClass
  50                 = slap_schema.si_ad_objectClass;
  51         int extensible = 0;
  52         int subentry = is_entry_subentry( e );
  53         int collectiveSubentry = 0;
  54
  55         if( subentry ) {
  56                 collectiveSubentry = is_entry_collectiveAttributeSubentry( e );
  57         }
  58
  59         *text = textbuf;
  60
  61         /* misc attribute checks */
  62         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
  63                 const char *type = a->a_desc->ad_cname.bv_val;
  64
  65                 /* there should be at least one value */
  66                 assert( a->a_vals );
  67                 assert( a->a_vals[0].bv_val != NULL );
  68
  69                 if( a->a_desc->ad_type->sat_check ) {
  70                         int rc = (a->a_desc->ad_type->sat_check)(
  71                                 be, e, a, text, textbuf, textlen );
  72                         if( rc != LDAP_SUCCESS ) {
  73                                 return rc;
  74                         }
  75                 }
  76
  77                 if( !collectiveSubentry && is_at_collective( a->a_desc->ad_type ) ) {
  78                         snprintf( textbuf, textlen,
  79                                 "'%s' can only appear in collectiveAttributeSubentry",
  80                                 type );
  81                         return LDAP_OBJECT_CLASS_VIOLATION;
  82                 }
  83
  84                 /* if single value type, check for multiple values */
  85                 if( is_at_single_value( a->a_desc->ad_type ) &&
  86                         a->a_vals[1].bv_val != NULL )
  87                 {
  88                         snprintf( textbuf, textlen,
  89                                 "attribute '%s' cannot have multiple values",
  90                                 type );
  91
  92 #ifdef NEW_LOGGING
  93                         LDAP_LOG( OPERATION, INFO,
  94                                 "entry_schema_check: dn=\"%s\" %s\n", e->e_dn, textbuf, 0 );
  95 #else
  96                         Debug( LDAP_DEBUG_ANY,
  97                             "Entry (%s), %s\n",
  98                             e->e_dn, textbuf, 0 );
  99 #endif
 100
 101                         return LDAP_CONSTRAINT_VIOLATION;
 102                 }
 103         }
 104
 105         /* it's a REALLY bad idea to disable schema checks */
 106         if( !global_schemacheck ) return LDAP_SUCCESS;
 107
 108         /* find the structural object class attribute */
 109         asc = attr_find( e->e_attrs, ad_structuralObjectClass );
 110         if ( asc == NULL ) {
 111 #ifdef NEW_LOGGING
 112                 LDAP_LOG( OPERATION, INFO,
 113                         "entry_schema_check: No structuralObjectClass for entry (%s)\n",
 114                         e->e_dn, 0, 0 );
 115 #else
 116                 Debug( LDAP_DEBUG_ANY,
 117                         "No structuralObjectClass for entry (%s)\n",
 118                     e->e_dn, 0, 0 );
 119 #endif
 120
 121                 *text = "no structuralObjectClass operational attribute";
 122                 return LDAP_OTHER;
 123         }
 124
 125         assert( asc->a_vals != NULL );
 126         assert( asc->a_vals[0].bv_val != NULL );
 127         assert( asc->a_vals[1].bv_val == NULL );
 128
 129         sc = oc_bvfind( &asc->a_vals[0] );
 130         if( sc == NULL ) {
 131                 snprintf( textbuf, textlen,
 132                         "unrecognized structuralObjectClass '%s'",
 133                         asc->a_vals[0].bv_val );
 134
 135 #ifdef NEW_LOGGING
 136                 LDAP_LOG( OPERATION, INFO,
 137                         "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 138 #else
 139                 Debug( LDAP_DEBUG_ANY,
 140                         "entry_check_schema(%s): %s\n",
 141                         e->e_dn, textbuf, 0 );
 142 #endif
 143
 144                 return LDAP_OBJECT_CLASS_VIOLATION;
 145         }
 146
 147         if( sc->soc_kind != LDAP_SCHEMA_STRUCTURAL ) {
 148                 snprintf( textbuf, textlen,
 149                         "structuralObjectClass '%s' is not STRUCTURAL",
 150                         asc->a_vals[0].bv_val );
 151
 152 #ifdef NEW_LOGGING
 153                 LDAP_LOG( OPERATION, INFO,
 154                         "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 155 #else
 156                 Debug( LDAP_DEBUG_ANY,
 157                         "entry_check_schema(%s): %s\n",
 158                         e->e_dn, textbuf, 0 );
 159 #endif
 160
 161                 return LDAP_OTHER;
 162         }
 163
 164         if( sc->soc_obsolete ) {
 165                 snprintf( textbuf, textlen,
 166                         "structuralObjectClass '%s' is OBSOLETE",
 167                         asc->a_vals[0].bv_val );
 168
 169 #ifdef NEW_LOGGING
 170                 LDAP_LOG( OPERATION, INFO,
 171                         "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 172 #else
 173                 Debug( LDAP_DEBUG_ANY,
 174                         "entry_check_schema(%s): %s\n",
 175                         e->e_dn, textbuf, 0 );
 176 #endif
 177
 178                 return LDAP_OBJECT_CLASS_VIOLATION;
 179         }
 180
 181         /* find the object class attribute */
 182         aoc = attr_find( e->e_attrs, ad_objectClass );
 183         if ( aoc == NULL ) {
 184 #ifdef NEW_LOGGING
 185                 LDAP_LOG( OPERATION, INFO,
 186                         "entry_schema_check: No objectClass for entry (%s).\n",
 187                         e->e_dn, 0, 0 );
 188 #else
 189                 Debug( LDAP_DEBUG_ANY, "No objectClass for entry (%s)\n",
 190                     e->e_dn, 0, 0 );
 191 #endif
 192
 193                 *text = "no objectClass attribute";
 194                 return LDAP_OBJECT_CLASS_VIOLATION;
 195         }
 196
 197         assert( aoc->a_vals != NULL );
 198         assert( aoc->a_vals[0].bv_val != NULL );
 199
 200         rc = structural_class( aoc->a_vals, &nsc, &oc, text, textbuf, textlen );
 201         if( rc != LDAP_SUCCESS ) {
 202                 return rc;
 203         }
 204
 205         *text = textbuf;
 206
 207         if ( oc == NULL ) {
 208                 snprintf( textbuf, textlen,
 209                         "unrecognized objectClass '%s'",
 210                         aoc->a_vals[0].bv_val );
 211                 return LDAP_OBJECT_CLASS_VIOLATION;
 212
 213         } else if ( sc != oc ) {
 214                 snprintf( textbuf, textlen,
 215                         "structural object class modification from '%s' to '%s' not allowed",
 216                         asc->a_vals[0].bv_val, nsc.bv_val );
 217                 return LDAP_NO_OBJECT_CLASS_MODS;
 218         }
 219
 220 #ifdef SLAP_EXTENDED_SCHEMA
 221         /* find the content rule for the structural class */
 222         cr = cr_find( sc->soc_oid );
 223
 224         /* the cr must be same as the structural class */
 225         assert( !cr || !strcmp( cr->scr_oid, sc->soc_oid ) );
 226
 227         /* check that the entry has required attrs of the content rule */
 228         if( cr ) {
 229                 if( cr->scr_obsolete ) {
 230                         snprintf( textbuf, textlen,
 231                                 "content rule '%s' is obsolete",
 232                                 ldap_contentrule2name( &cr->scr_crule ));
 233
 234 #ifdef NEW_LOGGING
 235                         LDAP_LOG( OPERATION, INFO,
 236                                 "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 237 #else
 238                         Debug( LDAP_DEBUG_ANY,
 239                                 "Entry (%s): %s\n",
 240                                 e->e_dn, textbuf, 0 );
 241 #endif
 242
 243                         return LDAP_OBJECT_CLASS_VIOLATION;
 244                 }
 245
 246                 if( cr->scr_required ) for( i=0; cr->scr_required[i]; i++ ) {
 247                         at = cr->scr_required[i];
 248
 249                         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 250                                 if( a->a_desc->ad_type == at ) {
 251                                         break;
 252                                 }
 253                         }
 254
 255                         /* not there => schema violation */
 256                         if ( a == NULL ) {
 257                                 snprintf( textbuf, textlen,
 258                                         "content rule '%s' requires attribute '%s'",
 259                                         ldap_contentrule2name( &cr->scr_crule ),
 260                                         at->sat_cname.bv_val );
 261
 262 #ifdef NEW_LOGGING
 263                                 LDAP_LOG( OPERATION, INFO,
 264                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 265 #else
 266                                 Debug( LDAP_DEBUG_ANY,
 267                                         "Entry (%s): %s\n",
 268                                         e->e_dn, textbuf, 0 );
 269 #endif
 270
 271                                 return LDAP_OBJECT_CLASS_VIOLATION;
 272                         }
 273                 }
 274
 275                 if( cr->scr_precluded ) for( i=0; cr->scr_precluded[i]; i++ ) {
 276                         at = cr->scr_precluded[i];
 277
 278                         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 279                                 if( a->a_desc->ad_type == at ) {
 280                                         break;
 281                                 }
 282                         }
 283
 284                         /* there => schema violation */
 285                         if ( a != NULL ) {
 286                                 snprintf( textbuf, textlen,
 287                                         "content rule '%s' precluded attribute '%s'",
 288                                         ldap_contentrule2name( &cr->scr_crule ),
 289                                         at->sat_cname.bv_val );
 290
 291 #ifdef NEW_LOGGING
 292                                 LDAP_LOG( OPERATION, INFO,
 293                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 294 #else
 295                                 Debug( LDAP_DEBUG_ANY,
 296                                         "Entry (%s): %s\n",
 297                                         e->e_dn, textbuf, 0 );
 298 #endif
 299
 300                                 return LDAP_OBJECT_CLASS_VIOLATION;
 301                         }
 302                 }
 303         }
 304 #endif /* SLAP_EXTENDED_SCHEMA */
 305
 306         /* check that the entry has required attrs for each oc */
 307         for ( i = 0; aoc->a_vals[i].bv_val != NULL; i++ ) {
 308                 if ( (oc = oc_bvfind( &aoc->a_vals[i] )) == NULL ) {
 309                         snprintf( textbuf, textlen,
 310                                 "unrecognized objectClass '%s'",
 311                                 aoc->a_vals[i].bv_val );
 312
 313 #ifdef NEW_LOGGING
 314                         LDAP_LOG( OPERATION, INFO,
 315                                 "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 316 #else
 317                         Debug( LDAP_DEBUG_ANY,
 318                                 "entry_check_schema(%s): %s\n",
 319                                 e->e_dn, textbuf, 0 );
 320 #endif
 321
 322                         return LDAP_OBJECT_CLASS_VIOLATION;
 323                 }
 324
 325                 if ( oc->soc_obsolete ) {
 326                         /* disallow obsolete classes */
 327                         snprintf( textbuf, textlen,
 328                                 "objectClass '%s' is OBSOLETE",
 329                                 aoc->a_vals[i].bv_val );
 330
 331 #ifdef NEW_LOGGING
 332                         LDAP_LOG( OPERATION, INFO,
 333                                 "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 334 #else
 335                         Debug( LDAP_DEBUG_ANY,
 336                                 "entry_check_schema(%s): %s\n",
 337                                 e->e_dn, textbuf, 0 );
 338 #endif
 339
 340                         return LDAP_OBJECT_CLASS_VIOLATION;
 341                 }
 342
 343                 if ( oc->soc_check ) {
 344                         int rc = (oc->soc_check)( be, e, oc,
 345                                 text, textbuf, textlen );
 346                         if( rc != LDAP_SUCCESS ) {
 347                                 return rc;
 348                         }
 349                 }
 350
 351                 if ( oc->soc_kind == LDAP_SCHEMA_ABSTRACT ) {
 352                         /* object class is abstract */
 353                         if ( oc != slap_schema.si_oc_top &&
 354                                 !is_object_subclass( oc, sc ))
 355                         {
 356                                 int j;
 357                                 ObjectClass *xc = NULL;
 358                                 for( j=0; aoc->a_vals[j].bv_val; j++ ) {
 359                                         if( i != j ) {
 360                                                 xc = oc_bvfind( &aoc->a_vals[i] );
 361                                                 if( xc == NULL ) {
 362                                                         snprintf( textbuf, textlen,
 363                                                                 "unrecognized objectClass '%s'",
 364                                                                 aoc->a_vals[i].bv_val );
 365
 366 #ifdef NEW_LOGGING
 367                                                         LDAP_LOG( OPERATION, INFO,
 368                                                                 "entry_schema_check: dn (%s), %s\n",
 369                                                                 e->e_dn, textbuf, 0 );
 370 #else
 371                                                         Debug( LDAP_DEBUG_ANY,
 372                                                                 "entry_check_schema(%s): %s\n",
 373                                                                 e->e_dn, textbuf, 0 );
 374 #endif
 375
 376                                                         return LDAP_OBJECT_CLASS_VIOLATION;
 377                                                 }
 378
 379                                                 /* since we previous check against the
 380                                                  * structural object of this entry, the
 381                                                  * abstract class must be a (direct or indirect)
 382                                                  * superclass of one of the auxiliary classes of
 383                                                  * the entry.
 384                                                  */
 385                                                 if ( xc->soc_kind == LDAP_SCHEMA_AUXILIARY &&
 386                                                         is_object_subclass( oc, xc ) )
 387                                                 {
 388                                                         xc = NULL;
 389                                                         break;
 390                                                 }
 391                                         }
 392                                 }
 393
 394                                 if( xc == NULL ) {
 395                                         snprintf( textbuf, textlen, "instanstantiation of "
 396                                                 "abstract objectClass '%s' not allowed",
 397                                                 aoc->a_vals[i].bv_val );
 398
 399 #ifdef NEW_LOGGING
 400                                         LDAP_LOG( OPERATION, INFO,
 401                                                 "entry_schema_check: dn (%s), %s\n",
 402                                                 e->e_dn, textbuf, 0 );
 403 #else
 404                                         Debug( LDAP_DEBUG_ANY,
 405                                                 "entry_check_schema(%s): %s\n",
 406                                                 e->e_dn, textbuf, 0 );
 407 #endif
 408
 409                                         return LDAP_OBJECT_CLASS_VIOLATION;
 410                                 }
 411                         }
 412
 413                 } else if ( oc->soc_kind != LDAP_SCHEMA_STRUCTURAL || oc == sc ) {
 414                         char *s;
 415
 416 #ifdef SLAP_EXTENDED_SCHEMA
 417                         if( oc->soc_kind == LDAP_SCHEMA_AUXILIARY ) {
 418                                 int k=0;
 419                                 if( cr ) {
 420                                         if( cr->scr_auxiliaries ) {
 421                                                 for( ; cr->scr_auxiliaries[k]; k++ ) {
 422                                                         if( cr->scr_auxiliaries[k] == oc ) {
 423                                                                 k=-1;
 424                                                                 break;
 425                                                         }
 426                                                 }
 427                                         }
 428                                 } else if ( global_disallows & SLAP_DISALLOW_AUX_WO_CR ) {
 429                                         k=-1;
 430                                 }
 431
 432                                 if( k == -1 ) {
 433                                         snprintf( textbuf, textlen,
 434                                                 "content rule '%s' does not allow class '%s'",
 435                                                 ldap_contentrule2name( &cr->scr_crule ),
 436                                                 oc->soc_cname.bv_val );
 437
 438 #ifdef NEW_LOGGING
 439                                         LDAP_LOG( OPERATION, INFO,
 440                                                 "entry_schema_check: dn=\"%s\" %s",
 441                                                 e->e_dn, textbuf, 0 );
 442 #else
 443                                         Debug( LDAP_DEBUG_ANY,
 444                                                 "Entry (%s): %s\n",
 445                                                 e->e_dn, textbuf, 0 );
 446 #endif
 447
 448                                         return LDAP_OBJECT_CLASS_VIOLATION;
 449                                 }
 450                         }
 451 #endif /* SLAP_EXTENDED_SCHEMA */
 452
 453                         s = oc_check_required( e, oc, &aoc->a_vals[i] );
 454                         if (s != NULL) {
 455                                 snprintf( textbuf, textlen,
 456                                         "object class '%s' requires attribute '%s'",
 457                                         aoc->a_vals[i].bv_val, s );
 458
 459 #ifdef NEW_LOGGING
 460                                 LDAP_LOG( OPERATION, INFO,
 461                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 462 #else
 463                                 Debug( LDAP_DEBUG_ANY,
 464                                         "Entry (%s): %s\n",
 465                                         e->e_dn, textbuf, 0 );
 466 #endif
 467
 468                                 return LDAP_OBJECT_CLASS_VIOLATION;
 469                         }
 470
 471                         if( oc == slap_schema.si_oc_extensibleObject ) {
 472                                 extensible=1;
 473                         }
 474                 }
 475         }
 476
 477         if( extensible ) {
 478                 return LDAP_SUCCESS;
 479         }
 480
 481         /* check that each attr in the entry is allowed by some oc */
 482         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 483                 int ret;
 484
 485 #ifdef SLAP_EXTENDED_SCHEMA
 486                 ret = LDAP_OBJECT_CLASS_VIOLATION;
 487
 488                 if( cr && cr->scr_required ) {
 489                         for( i=0; cr->scr_required[i]; i++ ) {
 490                                 if( cr->scr_required[i] == a->a_desc->ad_type ) {
 491                                         ret = LDAP_SUCCESS;
 492                                         break;
 493                                 }
 494                         }
 495                 }
 496
 497                 if( ret != LDAP_SUCCESS && cr && cr->scr_allowed ) {
 498                         for( i=0; cr->scr_allowed[i]; i++ ) {
 499                                 if( cr->scr_allowed[i] == a->a_desc->ad_type ) {
 500                                         ret = LDAP_SUCCESS;
 501                                         break;
 502                                 }
 503                         }
 504                 }
 505
 506                 if( ret != LDAP_SUCCESS )
 507 #endif /* SLAP_EXTENDED_SCHEMA */
 508                 {
 509                         ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals, sc );
 510                 }
 511
 512                 if ( ret != LDAP_SUCCESS ) {
 513                         char *type = a->a_desc->ad_cname.bv_val;
 514
 515                         snprintf( textbuf, textlen,
 516                                 "attribute '%s' not allowed",
 517                                 type );
 518
 519 #ifdef NEW_LOGGING
 520                         LDAP_LOG( OPERATION, INFO,
 521                                 "entry_schema_check: dn=\"%s\" %s\n", e->e_dn, textbuf, 0);
 522 #else
 523                         Debug( LDAP_DEBUG_ANY,
 524                             "Entry (%s), %s\n",
 525                             e->e_dn, textbuf, 0 );
 526 #endif
 527
 528                         return ret;
 529                 }
 530         }
 531
 532         return LDAP_SUCCESS;
 533 }
 534
 535 static char *
 536 oc_check_required(
 537         Entry *e,
 538         ObjectClass *oc,
 539         struct berval *ocname )
 540 {
 541         AttributeType   *at;
 542         int             i;
 543         Attribute       *a;
 544
 545 #ifdef NEW_LOGGING
 546         LDAP_LOG( OPERATION, ENTRY,
 547                 "oc_check_required: dn (%s), objectClass \"%s\"\n",
 548                 e->e_dn, ocname->bv_val, 0 );
 549 #else
 550         Debug( LDAP_DEBUG_TRACE,
 551                 "oc_check_required entry (%s), objectClass \"%s\"\n",
 552                 e->e_dn, ocname->bv_val, 0 );
 553 #endif
 554
 555
 556         /* check for empty oc_required */
 557         if(oc->soc_required == NULL) {
 558                 return NULL;
 559         }
 560
 561         /* for each required attribute */
 562         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 563                 at = oc->soc_required[i];
 564                 /* see if it's in the entry */
 565                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 566                         if( a->a_desc->ad_type == at ) {
 567                                 break;
 568                         }
 569                 }
 570                 /* not there => schema violation */
 571                 if ( a == NULL ) {
 572                         return at->sat_cname.bv_val;
 573                 }
 574         }
 575
 576         return( NULL );
 577 }
 578
 579 int oc_check_allowed(
 580         AttributeType *at,
 581         BerVarray ocl,
 582         ObjectClass *sc )
 583 {
 584         int             i, j;
 585
 586 #ifdef NEW_LOGGING
 587         LDAP_LOG( OPERATION, ENTRY,
 588                 "oc_check_allowed: type \"%s\"\n", at->sat_cname.bv_val, 0, 0 );
 589 #else
 590         Debug( LDAP_DEBUG_TRACE,
 591                 "oc_check_allowed type \"%s\"\n",
 592                 at->sat_cname.bv_val, 0, 0 );
 593 #endif
 594
 595         /* always allow objectClass attribute */
 596         if ( strcasecmp( at->sat_cname.bv_val, "objectClass" ) == 0 ) {
 597                 return LDAP_SUCCESS;
 598         }
 599
 600         /*
 601          * All operational attributions are allowed by schema rules.
 602          */
 603         if( is_at_operational(at) ) {
 604                 return LDAP_SUCCESS;
 605         }
 606
 607         /* check to see if its allowed by the structuralObjectClass */
 608         if( sc ) {
 609                 /* does it require the type? */
 610                 for ( j = 0; sc->soc_required != NULL &&
 611                         sc->soc_required[j] != NULL; j++ )
 612                 {
 613                         if( at == sc->soc_required[j] ) {
 614                                 return LDAP_SUCCESS;
 615                         }
 616                 }
 617
 618                 /* does it allow the type? */
 619                 for ( j = 0; sc->soc_allowed != NULL &&
 620                         sc->soc_allowed[j] != NULL; j++ )
 621                 {
 622                         if( at == sc->soc_allowed[j] ) {
 623                                 return LDAP_SUCCESS;
 624                         }
 625                 }
 626         }
 627
 628         /* check that the type appears as req or opt in at least one oc */
 629         for ( i = 0; ocl[i].bv_val != NULL; i++ ) {
 630                 /* if we know about the oc */
 631                 ObjectClass     *oc = oc_bvfind( &ocl[i] );
 632                 if ( oc != NULL && oc->soc_kind != LDAP_SCHEMA_ABSTRACT &&
 633                         ( sc == NULL || oc->soc_kind == LDAP_SCHEMA_AUXILIARY ))
 634                 {
 635                         /* does it require the type? */
 636                         for ( j = 0; oc->soc_required != NULL &&
 637                                 oc->soc_required[j] != NULL; j++ )
 638                         {
 639                                 if( at == oc->soc_required[j] ) {
 640                                         return LDAP_SUCCESS;
 641                                 }
 642                         }
 643                         /* does it allow the type? */
 644                         for ( j = 0; oc->soc_allowed != NULL &&
 645                                 oc->soc_allowed[j] != NULL; j++ )
 646                         {
 647                                 if( at == oc->soc_allowed[j] ) {
 648                                         return LDAP_SUCCESS;
 649                                 }
 650                         }
 651                 }
 652         }
 653
 654         /* not allowed by any oc */
 655         return LDAP_OBJECT_CLASS_VIOLATION;
 656 }
 657
 658 /*
 659  * Determine the structural object class from a set of OIDs
 660  */
 661 int structural_class(
 662         BerVarray ocs,
 663         struct berval *scbv,
 664         ObjectClass **scp,
 665         const char **text,
 666         char *textbuf, size_t textlen )
 667 {
 668         int i;
 669         ObjectClass *oc;
 670         ObjectClass *sc = NULL;
 671         int scn = -1;
 672
 673         *text = "structural_class: internal error";
 674         scbv->bv_len = 0;
 675
 676         for( i=0; ocs[i].bv_val; i++ ) {
 677                 oc = oc_bvfind( &ocs[i] );
 678
 679                 if( oc == NULL ) {
 680                         snprintf( textbuf, textlen,
 681                                 "unrecognized objectClass '%s'",
 682                                 ocs[i].bv_val );
 683                         *text = textbuf;
 684                         return LDAP_OBJECT_CLASS_VIOLATION;
 685                 }
 686
 687                 if( oc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 688                         if( sc == NULL || is_object_subclass( sc, oc ) ) {
 689                                 sc = oc;
 690                                 scn = i;
 691
 692                         } else if ( !is_object_subclass( oc, sc ) ) {
 693                                 int j;
 694                                 ObjectClass *xc = NULL;
 695
 696                                 /* find common superior */
 697                                 for( j=i+1; ocs[j].bv_val; j++ ) {
 698                                         xc = oc_bvfind( &ocs[j] );
 699
 700                                         if( xc == NULL ) {
 701                                                 snprintf( textbuf, textlen,
 702                                                         "unrecognized objectClass '%s'",
 703                                                         ocs[i].bv_val );
 704                                                 *text = textbuf;
 705                                                 return LDAP_OBJECT_CLASS_VIOLATION;
 706                                         }
 707
 708                                         if( xc->soc_kind != LDAP_SCHEMA_STRUCTURAL ) {
 709                                                 xc = NULL;
 710                                                 continue;
 711                                         }
 712
 713                                         if( is_object_subclass( sc, xc ) &&
 714                                                 is_object_subclass( oc, xc ) )
 715                                         {
 716                                                 /* found common subclass */
 717                                                 break;
 718                                         }
 719
 720                                         xc = NULL;
 721                                 }
 722
 723                                 if( xc == NULL ) {
 724                                         /* no common subclass */
 725                                         snprintf( textbuf, textlen,
 726                                                 "invalid structural object class chain (%s/%s)",
 727                                                 ocs[scn].bv_val, ocs[i].bv_val );
 728                                         *text = textbuf;
 729                                         return LDAP_OBJECT_CLASS_VIOLATION;
 730                                 }
 731                         }
 732                 }
 733         }
 734
 735         if( scp ) {
 736                 *scp = sc;
 737         }
 738
 739         if( sc == NULL ) {
 740                 *text = "no structural object class provided";
 741                 return LDAP_OBJECT_CLASS_VIOLATION;
 742         }
 743
 744         if( scn < 0 ) {
 745                 *text = "invalid structural object class";
 746                 return LDAP_OBJECT_CLASS_VIOLATION;
 747         }
 748
 749         *scbv = ocs[scn];
 750
 751         if( scbv->bv_len == 0 ) {
 752                 *text = "invalid structural object class";
 753                 return LDAP_OBJECT_CLASS_VIOLATION;
 754         }
 755
 756         return LDAP_SUCCESS;
 757 }
 758
 759 /*
 760  * Return structural object class from list of modifications
 761  */
 762 int mods_structural_class(
 763         Modifications *mods,
 764         struct berval *sc,
 765         const char **text,
 766         char *textbuf, size_t textlen )
 767 {
 768         Modifications *ocmod = NULL;
 769
 770         for( ; mods != NULL; mods = mods->sml_next ) {
 771                 if( mods->sml_desc == slap_schema.si_ad_objectClass ) {
 772                         if( ocmod != NULL ) {
 773                                 *text = "entry has multiple objectClass attributes";
 774                                 return LDAP_OBJECT_CLASS_VIOLATION;
 775                         }
 776                         ocmod = mods;
 777                 }
 778         }
 779
 780         if( ocmod == NULL ) {
 781                 *text = "entry has no objectClass attribute";
 782                 return LDAP_OBJECT_CLASS_VIOLATION;
 783         }
 784
 785         if( ocmod->sml_bvalues == NULL || ocmod->sml_bvalues[0].bv_val == NULL ) {
 786                 *text = "objectClass attribute has no values";
 787                 return LDAP_OBJECT_CLASS_VIOLATION;
 788         }
 789
 790         return structural_class( ocmod->sml_bvalues, sc, NULL,
 791                 text, textbuf, textlen );
 792 }