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_check ) {
 326                         int rc = (oc->soc_check)( be, e, oc,
 327                                 text, textbuf, textlen );
 328                         if( rc != LDAP_SUCCESS ) {
 329                                 return rc;
 330                         }
 331                 }
 332
 333                 if ( oc->soc_kind == LDAP_SCHEMA_ABSTRACT ) {
 334                         /* object class is abstract */
 335                         if ( oc != slap_schema.si_oc_top &&
 336                                 !is_object_subclass( oc, sc ))
 337                         {
 338                                 int j;
 339                                 ObjectClass *xc = NULL;
 340                                 for( j=0; aoc->a_vals[j].bv_val; j++ ) {
 341                                         if( i != j ) {
 342                                                 xc = oc_bvfind( &aoc->a_vals[i] );
 343                                                 if( xc == NULL ) {
 344                                                         snprintf( textbuf, textlen,
 345                                                                 "unrecognized objectClass '%s'",
 346                                                                 aoc->a_vals[i].bv_val );
 347
 348 #ifdef NEW_LOGGING
 349                                                         LDAP_LOG( OPERATION, INFO,
 350                                                                 "entry_schema_check: dn (%s), %s\n",
 351                                                                 e->e_dn, textbuf, 0 );
 352 #else
 353                                                         Debug( LDAP_DEBUG_ANY,
 354                                                                 "entry_check_schema(%s): %s\n",
 355                                                                 e->e_dn, textbuf, 0 );
 356 #endif
 357
 358                                                         return LDAP_OBJECT_CLASS_VIOLATION;
 359                                                 }
 360
 361                                                 /* since we previous check against the
 362                                                  * structural object of this entry, the
 363                                                  * abstract class must be a (direct or indirect)
 364                                                  * superclass of one of the auxiliary classes of
 365                                                  * the entry.
 366                                                  */
 367                                                 if ( xc->soc_kind == LDAP_SCHEMA_AUXILIARY &&
 368                                                         is_object_subclass( oc, xc ) )
 369                                                 {
 370                                                         xc = NULL;
 371                                                         break;
 372                                                 }
 373                                         }
 374                                 }
 375
 376                                 if( xc == NULL ) {
 377                                         snprintf( textbuf, textlen, "instanstantiation of "
 378                                                 "abstract objectClass '%s' not allowed",
 379                                                 aoc->a_vals[i].bv_val );
 380
 381 #ifdef NEW_LOGGING
 382                                         LDAP_LOG( OPERATION, INFO,
 383                                                 "entry_schema_check: dn (%s), %s\n",
 384                                                 e->e_dn, textbuf, 0 );
 385 #else
 386                                         Debug( LDAP_DEBUG_ANY,
 387                                                 "entry_check_schema(%s): %s\n",
 388                                                 e->e_dn, textbuf, 0 );
 389 #endif
 390
 391                                         return LDAP_OBJECT_CLASS_VIOLATION;
 392                                 }
 393                         }
 394
 395                 } else if ( oc->soc_kind != LDAP_SCHEMA_STRUCTURAL || oc == sc ) {
 396                         char *s;
 397
 398 #ifdef SLAP_EXTENDED_SCHEMA
 399                         if( oc->soc_kind == LDAP_SCHEMA_AUXILIARY ) {
 400                                 int k=0;
 401                                 if( cr ) {
 402                                         if( cr->scr_auxiliaries ) {
 403                                                 for( ; cr->scr_auxiliaries[k]; k++ ) {
 404                                                         if( cr->scr_auxiliaries[k] == oc ) {
 405                                                                 k=-1;
 406                                                                 break;
 407                                                         }
 408                                                 }
 409                                         }
 410                                 } else if ( global_disallows & SLAP_DISALLOW_AUX_WO_CR ) {
 411                                         k=-1;
 412                                 }
 413
 414                                 if( k == -1 ) {
 415                                         snprintf( textbuf, textlen,
 416                                                 "content rule '%s' does not allow class '%s'",
 417                                                 ldap_contentrule2name( &cr->scr_crule ),
 418                                                 oc->soc_cname.bv_val );
 419
 420 #ifdef NEW_LOGGING
 421                                         LDAP_LOG( OPERATION, INFO,
 422                                                 "entry_schema_check: dn=\"%s\" %s",
 423                                                 e->e_dn, textbuf, 0 );
 424 #else
 425                                         Debug( LDAP_DEBUG_ANY,
 426                                                 "Entry (%s): %s\n",
 427                                                 e->e_dn, textbuf, 0 );
 428 #endif
 429
 430                                         return LDAP_OBJECT_CLASS_VIOLATION;
 431                                 }
 432                         }
 433 #endif /* SLAP_EXTENDED_SCHEMA */
 434
 435                         s = oc_check_required( e, oc, &aoc->a_vals[i] );
 436                         if (s != NULL) {
 437                                 snprintf( textbuf, textlen,
 438                                         "object class '%s' requires attribute '%s'",
 439                                         aoc->a_vals[i].bv_val, s );
 440
 441 #ifdef NEW_LOGGING
 442                                 LDAP_LOG( OPERATION, INFO,
 443                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 444 #else
 445                                 Debug( LDAP_DEBUG_ANY,
 446                                         "Entry (%s): %s\n",
 447                                         e->e_dn, textbuf, 0 );
 448 #endif
 449
 450                                 return LDAP_OBJECT_CLASS_VIOLATION;
 451                         }
 452
 453                         if( oc == slap_schema.si_oc_extensibleObject ) {
 454                                 extensible=1;
 455                         }
 456                 }
 457         }
 458
 459         if( extensible ) {
 460                 return LDAP_SUCCESS;
 461         }
 462
 463         /* check that each attr in the entry is allowed by some oc */
 464         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 465                 int ret;
 466
 467 #ifdef SLAP_EXTENDED_SCHEMA
 468                 ret = LDAP_OBJECT_CLASS_VIOLATION;
 469
 470                 if( cr && cr->scr_required ) {
 471                         for( i=0; cr->scr_required[i]; i++ ) {
 472                                 if( cr->scr_required[i] == a->a_desc->ad_type ) {
 473                                         ret = LDAP_SUCCESS;
 474                                         break;
 475                                 }
 476                         }
 477                 }
 478
 479                 if( ret != LDAP_SUCCESS && cr && cr->scr_allowed ) {
 480                         for( i=0; cr->scr_allowed[i]; i++ ) {
 481                                 if( cr->scr_allowed[i] == a->a_desc->ad_type ) {
 482                                         ret = LDAP_SUCCESS;
 483                                         break;
 484                                 }
 485                         }
 486                 }
 487
 488                 if( ret != LDAP_SUCCESS )
 489 #endif /* SLAP_EXTENDED_SCHEMA */
 490                 {
 491                         ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals, sc );
 492                 }
 493
 494                 if ( ret != LDAP_SUCCESS ) {
 495                         char *type = a->a_desc->ad_cname.bv_val;
 496
 497                         snprintf( textbuf, textlen,
 498                                 "attribute '%s' not allowed",
 499                                 type );
 500
 501 #ifdef NEW_LOGGING
 502                         LDAP_LOG( OPERATION, INFO,
 503                                 "entry_schema_check: dn=\"%s\" %s\n", e->e_dn, textbuf, 0);
 504 #else
 505                         Debug( LDAP_DEBUG_ANY,
 506                             "Entry (%s), %s\n",
 507                             e->e_dn, textbuf, 0 );
 508 #endif
 509
 510                         return ret;
 511                 }
 512         }
 513
 514         return LDAP_SUCCESS;
 515 }
 516
 517 static char *
 518 oc_check_required(
 519         Entry *e,
 520         ObjectClass *oc,
 521         struct berval *ocname )
 522 {
 523         AttributeType   *at;
 524         int             i;
 525         Attribute       *a;
 526
 527 #ifdef NEW_LOGGING
 528         LDAP_LOG( OPERATION, ENTRY,
 529                 "oc_check_required: dn (%s), objectClass \"%s\"\n",
 530                 e->e_dn, ocname->bv_val, 0 );
 531 #else
 532         Debug( LDAP_DEBUG_TRACE,
 533                 "oc_check_required entry (%s), objectClass \"%s\"\n",
 534                 e->e_dn, ocname->bv_val, 0 );
 535 #endif
 536
 537
 538         /* check for empty oc_required */
 539         if(oc->soc_required == NULL) {
 540                 return NULL;
 541         }
 542
 543         /* for each required attribute */
 544         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 545                 at = oc->soc_required[i];
 546                 /* see if it's in the entry */
 547                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 548                         if( a->a_desc->ad_type == at ) {
 549                                 break;
 550                         }
 551                 }
 552                 /* not there => schema violation */
 553                 if ( a == NULL ) {
 554                         return at->sat_cname.bv_val;
 555                 }
 556         }
 557
 558         return( NULL );
 559 }
 560
 561 int oc_check_allowed(
 562         AttributeType *at,
 563         BerVarray ocl,
 564         ObjectClass *sc )
 565 {
 566         int             i, j;
 567
 568 #ifdef NEW_LOGGING
 569         LDAP_LOG( OPERATION, ENTRY,
 570                 "oc_check_allowed: type \"%s\"\n", at->sat_cname.bv_val, 0, 0 );
 571 #else
 572         Debug( LDAP_DEBUG_TRACE,
 573                 "oc_check_allowed type \"%s\"\n",
 574                 at->sat_cname.bv_val, 0, 0 );
 575 #endif
 576
 577         /* always allow objectClass attribute */
 578         if ( strcasecmp( at->sat_cname.bv_val, "objectClass" ) == 0 ) {
 579                 return LDAP_SUCCESS;
 580         }
 581
 582         /*
 583          * All operational attributions are allowed by schema rules.
 584          */
 585         if( is_at_operational(at) ) {
 586                 return LDAP_SUCCESS;
 587         }
 588
 589         /* check to see if its allowed by the structuralObjectClass */
 590         if( sc ) {
 591                 /* does it require the type? */
 592                 for ( j = 0; sc->soc_required != NULL &&
 593                         sc->soc_required[j] != NULL; j++ )
 594                 {
 595                         if( at == sc->soc_required[j] ) {
 596                                 return LDAP_SUCCESS;
 597                         }
 598                 }
 599
 600                 /* does it allow the type? */
 601                 for ( j = 0; sc->soc_allowed != NULL &&
 602                         sc->soc_allowed[j] != NULL; j++ )
 603                 {
 604                         if( at == sc->soc_allowed[j] ) {
 605                                 return LDAP_SUCCESS;
 606                         }
 607                 }
 608         }
 609
 610         /* check that the type appears as req or opt in at least one oc */
 611         for ( i = 0; ocl[i].bv_val != NULL; i++ ) {
 612                 /* if we know about the oc */
 613                 ObjectClass     *oc = oc_bvfind( &ocl[i] );
 614                 if ( oc != NULL && oc->soc_kind != LDAP_SCHEMA_ABSTRACT &&
 615                         ( sc == NULL || oc->soc_kind == LDAP_SCHEMA_AUXILIARY ))
 616                 {
 617                         /* does it require the type? */
 618                         for ( j = 0; oc->soc_required != NULL &&
 619                                 oc->soc_required[j] != NULL; j++ )
 620                         {
 621                                 if( at == oc->soc_required[j] ) {
 622                                         return LDAP_SUCCESS;
 623                                 }
 624                         }
 625                         /* does it allow the type? */
 626                         for ( j = 0; oc->soc_allowed != NULL &&
 627                                 oc->soc_allowed[j] != NULL; j++ )
 628                         {
 629                                 if( at == oc->soc_allowed[j] ) {
 630                                         return LDAP_SUCCESS;
 631                                 }
 632                         }
 633                 }
 634         }
 635
 636         /* not allowed by any oc */
 637         return LDAP_OBJECT_CLASS_VIOLATION;
 638 }
 639
 640 /*
 641  * Determine the structural object class from a set of OIDs
 642  */
 643 int structural_class(
 644         BerVarray ocs,
 645         struct berval *scbv,
 646         ObjectClass **scp,
 647         const char **text,
 648         char *textbuf, size_t textlen )
 649 {
 650         int i;
 651         ObjectClass *oc;
 652         ObjectClass *sc = NULL;
 653         int scn = -1;
 654
 655         *text = "structural_class: internal error";
 656         scbv->bv_len = 0;
 657
 658         for( i=0; ocs[i].bv_val; i++ ) {
 659                 oc = oc_bvfind( &ocs[i] );
 660
 661                 if( oc == NULL ) {
 662                         snprintf( textbuf, textlen,
 663                                 "unrecognized objectClass '%s'",
 664                                 ocs[i].bv_val );
 665                         *text = textbuf;
 666                         return LDAP_OBJECT_CLASS_VIOLATION;
 667                 }
 668
 669                 if( oc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 670                         if( sc == NULL || is_object_subclass( sc, oc ) ) {
 671                                 sc = oc;
 672                                 scn = i;
 673
 674                         } else if ( !is_object_subclass( oc, sc ) ) {
 675                                 int j;
 676                                 ObjectClass *xc = NULL;
 677
 678                                 /* find common superior */
 679                                 for( j=i+1; ocs[j].bv_val; j++ ) {
 680                                         xc = oc_bvfind( &ocs[j] );
 681
 682                                         if( xc == NULL ) {
 683                                                 snprintf( textbuf, textlen,
 684                                                         "unrecognized objectClass '%s'",
 685                                                         ocs[i].bv_val );
 686                                                 *text = textbuf;
 687                                                 return LDAP_OBJECT_CLASS_VIOLATION;
 688                                         }
 689
 690                                         if( xc->soc_kind != LDAP_SCHEMA_STRUCTURAL ) {
 691                                                 xc = NULL;
 692                                                 continue;
 693                                         }
 694
 695                                         if( is_object_subclass( sc, xc ) &&
 696                                                 is_object_subclass( oc, xc ) )
 697                                         {
 698                                                 /* found common subclass */
 699                                                 break;
 700                                         }
 701
 702                                         xc = NULL;
 703                                 }
 704
 705                                 if( xc == NULL ) {
 706                                         /* no common subclass */
 707                                         snprintf( textbuf, textlen,
 708                                                 "invalid structural object class chain (%s/%s)",
 709                                                 ocs[scn].bv_val, ocs[i].bv_val );
 710                                         *text = textbuf;
 711                                         return LDAP_OBJECT_CLASS_VIOLATION;
 712                                 }
 713                         }
 714                 }
 715         }
 716
 717         if( scp ) {
 718                 *scp = sc;
 719         }
 720
 721         if( sc == NULL ) {
 722                 *text = "no structural object classes provided";
 723                 return LDAP_OBJECT_CLASS_VIOLATION;
 724         }
 725
 726         if( scn < 0 ) {
 727                 *text = "invalid structural object class";
 728                 return LDAP_OBJECT_CLASS_VIOLATION;
 729         }
 730
 731         *scbv = ocs[scn];
 732
 733         if( scbv->bv_len == 0 ) {
 734                 *text = "invalid structural object class";
 735                 return LDAP_OBJECT_CLASS_VIOLATION;
 736         }
 737
 738         return LDAP_SUCCESS;
 739 }
 740
 741 /*
 742  * Return structural object class from list of modifications
 743  */
 744 int mods_structural_class(
 745         Modifications *mods,
 746         struct berval *sc,
 747         const char **text,
 748         char *textbuf, size_t textlen )
 749 {
 750         Modifications *ocmod = NULL;
 751
 752         for( ; mods != NULL; mods = mods->sml_next ) {
 753                 if( mods->sml_desc == slap_schema.si_ad_objectClass ) {
 754                         if( ocmod != NULL ) {
 755                                 *text = "entry has multiple objectClass attributes";
 756                                 return LDAP_OBJECT_CLASS_VIOLATION;
 757                         }
 758                         ocmod = mods;
 759                 }
 760         }
 761
 762         if( ocmod == NULL ) {
 763                 *text = "entry has no objectClass attribute";
 764                 return LDAP_OBJECT_CLASS_VIOLATION;
 765         }
 766
 767         if( ocmod->sml_bvalues == NULL || ocmod->sml_bvalues[0].bv_val == NULL ) {
 768                 *text = "objectClass attribute has no values";
 769                 return LDAP_OBJECT_CLASS_VIOLATION;
 770         }
 771
 772         return structural_class( ocmod->sml_bvalues, sc, NULL,
 773                 text, textbuf, textlen );
 774 }