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 1998-2003 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 "
 216                         "from '%s' to '%s' not allowed",
 217                         asc->a_vals[0].bv_val, nsc.bv_val );
 218                 return LDAP_NO_OBJECT_CLASS_MODS;
 219         }
 220
 221         {       /* naming check */
 222                 LDAPRDN *rdn;
 223                 const char *p;
 224                 ber_len_t cnt;
 225
 226                 /*
 227                  * Get attribute type(s) and attribute value(s) of our RDN
 228                  */
 229                 if ( ldap_bv2rdn( &e->e_name, &rdn, (char **)&p,
 230                         LDAP_DN_FORMAT_LDAP ) )
 231                 {
 232                         *text = "unrecongized attribute type(s) in RDN";
 233                         return LDAP_INVALID_DN_SYNTAX;
 234                 }
 235
 236                 /* Check that each AVA of the RDN is present in the entry */
 237                 /* FIXME: Should also check that each AVA lists a distinct type */
 238                 for ( cnt = 0; rdn[0][cnt]; cnt++ ) {
 239                         LDAPAVA *ava = rdn[0][cnt];
 240                         AttributeDescription *desc = NULL;
 241                         Attribute *attr;
 242                         const char *errtext;
 243
 244                         rc = slap_bv2ad( &ava->la_attr, &desc, &errtext );
 245                         if ( rc != LDAP_SUCCESS ) {
 246                                 snprintf( textbuf, textlen, "%s (in RDN)", errtext );
 247                                 return rc;
 248                         }
 249
 250                         /* find the naming attribute */
 251                         attr = attr_find( e->e_attrs, desc );
 252                         if ( attr == NULL ) {
 253                                 snprintf( textbuf, textlen,
 254                                         "naming attribute '%s' is not present in entry",
 255                                         ava->la_attr );
 256                                 return LDAP_NO_SUCH_ATTRIBUTE;
 257                         }
 258
 259                         if ( value_find( desc, attr->a_vals, &ava->la_value ) != 0 ) {
 260                                 snprintf( textbuf, textlen,
 261                                         "value of naming attribute '%s' is not present in entry",
 262                                         ava->la_attr );
 263                                 return LDAP_NO_SUCH_ATTRIBUTE;
 264                         }
 265                 }
 266         }
 267
 268 #ifdef SLAP_EXTENDED_SCHEMA
 269         /* find the content rule for the structural class */
 270         cr = cr_find( sc->soc_oid );
 271
 272         /* the cr must be same as the structural class */
 273         assert( !cr || !strcmp( cr->scr_oid, sc->soc_oid ) );
 274
 275         /* check that the entry has required attrs of the content rule */
 276         if( cr ) {
 277                 if( cr->scr_obsolete ) {
 278                         snprintf( textbuf, textlen,
 279                                 "content rule '%s' is obsolete",
 280                                 ldap_contentrule2name( &cr->scr_crule ));
 281
 282 #ifdef NEW_LOGGING
 283                         LDAP_LOG( OPERATION, INFO,
 284                                 "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 285 #else
 286                         Debug( LDAP_DEBUG_ANY,
 287                                 "Entry (%s): %s\n",
 288                                 e->e_dn, textbuf, 0 );
 289 #endif
 290
 291                         return LDAP_OBJECT_CLASS_VIOLATION;
 292                 }
 293
 294                 if( cr->scr_required ) for( i=0; cr->scr_required[i]; i++ ) {
 295                         at = cr->scr_required[i];
 296
 297                         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 298                                 if( a->a_desc->ad_type == at ) {
 299                                         break;
 300                                 }
 301                         }
 302
 303                         /* not there => schema violation */
 304                         if ( a == NULL ) {
 305                                 snprintf( textbuf, textlen,
 306                                         "content rule '%s' requires attribute '%s'",
 307                                         ldap_contentrule2name( &cr->scr_crule ),
 308                                         at->sat_cname.bv_val );
 309
 310 #ifdef NEW_LOGGING
 311                                 LDAP_LOG( OPERATION, INFO,
 312                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 313 #else
 314                                 Debug( LDAP_DEBUG_ANY,
 315                                         "Entry (%s): %s\n",
 316                                         e->e_dn, textbuf, 0 );
 317 #endif
 318
 319                                 return LDAP_OBJECT_CLASS_VIOLATION;
 320                         }
 321                 }
 322
 323                 if( cr->scr_precluded ) for( i=0; cr->scr_precluded[i]; i++ ) {
 324                         at = cr->scr_precluded[i];
 325
 326                         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 327                                 if( a->a_desc->ad_type == at ) {
 328                                         break;
 329                                 }
 330                         }
 331
 332                         /* there => schema violation */
 333                         if ( a != NULL ) {
 334                                 snprintf( textbuf, textlen,
 335                                         "content rule '%s' precluded attribute '%s'",
 336                                         ldap_contentrule2name( &cr->scr_crule ),
 337                                         at->sat_cname.bv_val );
 338
 339 #ifdef NEW_LOGGING
 340                                 LDAP_LOG( OPERATION, INFO,
 341                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 342 #else
 343                                 Debug( LDAP_DEBUG_ANY,
 344                                         "Entry (%s): %s\n",
 345                                         e->e_dn, textbuf, 0 );
 346 #endif
 347
 348                                 return LDAP_OBJECT_CLASS_VIOLATION;
 349                         }
 350                 }
 351         }
 352 #endif /* SLAP_EXTENDED_SCHEMA */
 353
 354         /* check that the entry has required attrs for each oc */
 355         for ( i = 0; aoc->a_vals[i].bv_val != NULL; i++ ) {
 356                 if ( (oc = oc_bvfind( &aoc->a_vals[i] )) == NULL ) {
 357                         snprintf( textbuf, textlen,
 358                                 "unrecognized objectClass '%s'",
 359                                 aoc->a_vals[i].bv_val );
 360
 361 #ifdef NEW_LOGGING
 362                         LDAP_LOG( OPERATION, INFO,
 363                                 "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 364 #else
 365                         Debug( LDAP_DEBUG_ANY,
 366                                 "entry_check_schema(%s): %s\n",
 367                                 e->e_dn, textbuf, 0 );
 368 #endif
 369
 370                         return LDAP_OBJECT_CLASS_VIOLATION;
 371                 }
 372
 373                 if ( oc->soc_obsolete ) {
 374                         /* disallow obsolete classes */
 375                         snprintf( textbuf, textlen,
 376                                 "objectClass '%s' is OBSOLETE",
 377                                 aoc->a_vals[i].bv_val );
 378
 379 #ifdef NEW_LOGGING
 380                         LDAP_LOG( OPERATION, INFO,
 381                                 "entry_schema_check: dn (%s), %s\n", e->e_dn, textbuf, 0 );
 382 #else
 383                         Debug( LDAP_DEBUG_ANY,
 384                                 "entry_check_schema(%s): %s\n",
 385                                 e->e_dn, textbuf, 0 );
 386 #endif
 387
 388                         return LDAP_OBJECT_CLASS_VIOLATION;
 389                 }
 390
 391                 if ( oc->soc_check ) {
 392                         int rc = (oc->soc_check)( be, e, oc,
 393                                 text, textbuf, textlen );
 394                         if( rc != LDAP_SUCCESS ) {
 395                                 return rc;
 396                         }
 397                 }
 398
 399                 if ( oc->soc_kind == LDAP_SCHEMA_ABSTRACT ) {
 400                         /* object class is abstract */
 401                         if ( oc != slap_schema.si_oc_top &&
 402                                 !is_object_subclass( oc, sc ))
 403                         {
 404                                 int j;
 405                                 ObjectClass *xc = NULL;
 406                                 for( j=0; aoc->a_vals[j].bv_val; j++ ) {
 407                                         if( i != j ) {
 408                                                 xc = oc_bvfind( &aoc->a_vals[i] );
 409                                                 if( xc == NULL ) {
 410                                                         snprintf( textbuf, textlen,
 411                                                                 "unrecognized objectClass '%s'",
 412                                                                 aoc->a_vals[i].bv_val );
 413
 414 #ifdef NEW_LOGGING
 415                                                         LDAP_LOG( OPERATION, INFO,
 416                                                                 "entry_schema_check: dn (%s), %s\n",
 417                                                                 e->e_dn, textbuf, 0 );
 418 #else
 419                                                         Debug( LDAP_DEBUG_ANY,
 420                                                                 "entry_check_schema(%s): %s\n",
 421                                                                 e->e_dn, textbuf, 0 );
 422 #endif
 423
 424                                                         return LDAP_OBJECT_CLASS_VIOLATION;
 425                                                 }
 426
 427                                                 /* since we previous check against the
 428                                                  * structural object of this entry, the
 429                                                  * abstract class must be a (direct or indirect)
 430                                                  * superclass of one of the auxiliary classes of
 431                                                  * the entry.
 432                                                  */
 433                                                 if ( xc->soc_kind == LDAP_SCHEMA_AUXILIARY &&
 434                                                         is_object_subclass( oc, xc ) )
 435                                                 {
 436                                                         xc = NULL;
 437                                                         break;
 438                                                 }
 439                                         }
 440                                 }
 441
 442                                 if( xc == NULL ) {
 443                                         snprintf( textbuf, textlen, "instanstantiation of "
 444                                                 "abstract objectClass '%s' not allowed",
 445                                                 aoc->a_vals[i].bv_val );
 446
 447 #ifdef NEW_LOGGING
 448                                         LDAP_LOG( OPERATION, INFO,
 449                                                 "entry_schema_check: dn (%s), %s\n",
 450                                                 e->e_dn, textbuf, 0 );
 451 #else
 452                                         Debug( LDAP_DEBUG_ANY,
 453                                                 "entry_check_schema(%s): %s\n",
 454                                                 e->e_dn, textbuf, 0 );
 455 #endif
 456
 457                                         return LDAP_OBJECT_CLASS_VIOLATION;
 458                                 }
 459                         }
 460
 461                 } else if ( oc->soc_kind != LDAP_SCHEMA_STRUCTURAL || oc == sc ) {
 462                         char *s;
 463
 464 #ifdef SLAP_EXTENDED_SCHEMA
 465                         if( oc->soc_kind == LDAP_SCHEMA_AUXILIARY ) {
 466                                 int k=0;
 467                                 if( cr ) {
 468                                         if( cr->scr_auxiliaries ) {
 469                                                 for( ; cr->scr_auxiliaries[k]; k++ ) {
 470                                                         if( cr->scr_auxiliaries[k] == oc ) {
 471                                                                 k=-1;
 472                                                                 break;
 473                                                         }
 474                                                 }
 475                                         }
 476                                 } else if ( global_disallows & SLAP_DISALLOW_AUX_WO_CR ) {
 477                                         k=-1;
 478                                 }
 479
 480                                 if( k == -1 ) {
 481                                         snprintf( textbuf, textlen,
 482                                                 "content rule '%s' does not allow class '%s'",
 483                                                 ldap_contentrule2name( &cr->scr_crule ),
 484                                                 oc->soc_cname.bv_val );
 485
 486 #ifdef NEW_LOGGING
 487                                         LDAP_LOG( OPERATION, INFO,
 488                                                 "entry_schema_check: dn=\"%s\" %s",
 489                                                 e->e_dn, textbuf, 0 );
 490 #else
 491                                         Debug( LDAP_DEBUG_ANY,
 492                                                 "Entry (%s): %s\n",
 493                                                 e->e_dn, textbuf, 0 );
 494 #endif
 495
 496                                         return LDAP_OBJECT_CLASS_VIOLATION;
 497                                 }
 498                         }
 499 #endif /* SLAP_EXTENDED_SCHEMA */
 500
 501                         s = oc_check_required( e, oc, &aoc->a_vals[i] );
 502                         if (s != NULL) {
 503                                 snprintf( textbuf, textlen,
 504                                         "object class '%s' requires attribute '%s'",
 505                                         aoc->a_vals[i].bv_val, s );
 506
 507 #ifdef NEW_LOGGING
 508                                 LDAP_LOG( OPERATION, INFO,
 509                                         "entry_schema_check: dn=\"%s\" %s", e->e_dn, textbuf, 0 );
 510 #else
 511                                 Debug( LDAP_DEBUG_ANY,
 512                                         "Entry (%s): %s\n",
 513                                         e->e_dn, textbuf, 0 );
 514 #endif
 515
 516                                 return LDAP_OBJECT_CLASS_VIOLATION;
 517                         }
 518
 519                         if( oc == slap_schema.si_oc_extensibleObject ) {
 520                                 extensible=1;
 521                         }
 522                 }
 523         }
 524
 525         if( extensible ) {
 526                 return LDAP_SUCCESS;
 527         }
 528
 529         /* check that each attr in the entry is allowed by some oc */
 530         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 531                 int ret;
 532
 533 #ifdef SLAP_EXTENDED_SCHEMA
 534                 ret = LDAP_OBJECT_CLASS_VIOLATION;
 535
 536                 if( cr && cr->scr_required ) {
 537                         for( i=0; cr->scr_required[i]; i++ ) {
 538                                 if( cr->scr_required[i] == a->a_desc->ad_type ) {
 539                                         ret = LDAP_SUCCESS;
 540                                         break;
 541                                 }
 542                         }
 543                 }
 544
 545                 if( ret != LDAP_SUCCESS && cr && cr->scr_allowed ) {
 546                         for( i=0; cr->scr_allowed[i]; i++ ) {
 547                                 if( cr->scr_allowed[i] == a->a_desc->ad_type ) {
 548                                         ret = LDAP_SUCCESS;
 549                                         break;
 550                                 }
 551                         }
 552                 }
 553
 554                 if( ret != LDAP_SUCCESS )
 555 #endif /* SLAP_EXTENDED_SCHEMA */
 556                 {
 557                         ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals, sc );
 558                 }
 559
 560                 if ( ret != LDAP_SUCCESS ) {
 561                         char *type = a->a_desc->ad_cname.bv_val;
 562
 563                         snprintf( textbuf, textlen,
 564                                 "attribute '%s' not allowed",
 565                                 type );
 566
 567 #ifdef NEW_LOGGING
 568                         LDAP_LOG( OPERATION, INFO,
 569                                 "entry_schema_check: dn=\"%s\" %s\n", e->e_dn, textbuf, 0);
 570 #else
 571                         Debug( LDAP_DEBUG_ANY,
 572                             "Entry (%s), %s\n",
 573                             e->e_dn, textbuf, 0 );
 574 #endif
 575
 576                         return ret;
 577                 }
 578         }
 579
 580         return LDAP_SUCCESS;
 581 }
 582
 583 static char *
 584 oc_check_required(
 585         Entry *e,
 586         ObjectClass *oc,
 587         struct berval *ocname )
 588 {
 589         AttributeType   *at;
 590         int             i;
 591         Attribute       *a;
 592
 593 #ifdef NEW_LOGGING
 594         LDAP_LOG( OPERATION, ENTRY,
 595                 "oc_check_required: dn (%s), objectClass \"%s\"\n",
 596                 e->e_dn, ocname->bv_val, 0 );
 597 #else
 598         Debug( LDAP_DEBUG_TRACE,
 599                 "oc_check_required entry (%s), objectClass \"%s\"\n",
 600                 e->e_dn, ocname->bv_val, 0 );
 601 #endif
 602
 603
 604         /* check for empty oc_required */
 605         if(oc->soc_required == NULL) {
 606                 return NULL;
 607         }
 608
 609         /* for each required attribute */
 610         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 611                 at = oc->soc_required[i];
 612                 /* see if it's in the entry */
 613                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 614                         if( a->a_desc->ad_type == at ) {
 615                                 break;
 616                         }
 617                 }
 618                 /* not there => schema violation */
 619                 if ( a == NULL ) {
 620                         return at->sat_cname.bv_val;
 621                 }
 622         }
 623
 624         return( NULL );
 625 }
 626
 627 int oc_check_allowed(
 628         AttributeType *at,
 629         BerVarray ocl,
 630         ObjectClass *sc )
 631 {
 632         int             i, j;
 633
 634 #ifdef NEW_LOGGING
 635         LDAP_LOG( OPERATION, ENTRY,
 636                 "oc_check_allowed: type \"%s\"\n", at->sat_cname.bv_val, 0, 0 );
 637 #else
 638         Debug( LDAP_DEBUG_TRACE,
 639                 "oc_check_allowed type \"%s\"\n",
 640                 at->sat_cname.bv_val, 0, 0 );
 641 #endif
 642
 643         /* always allow objectClass attribute */
 644         if ( strcasecmp( at->sat_cname.bv_val, "objectClass" ) == 0 ) {
 645                 return LDAP_SUCCESS;
 646         }
 647
 648         /*
 649          * All operational attributions are allowed by schema rules.
 650          */
 651         if( is_at_operational(at) ) {
 652                 return LDAP_SUCCESS;
 653         }
 654
 655         /* check to see if its allowed by the structuralObjectClass */
 656         if( sc ) {
 657                 /* does it require the type? */
 658                 for ( j = 0; sc->soc_required != NULL &&
 659                         sc->soc_required[j] != NULL; j++ )
 660                 {
 661                         if( at == sc->soc_required[j] ) {
 662                                 return LDAP_SUCCESS;
 663                         }
 664                 }
 665
 666                 /* does it allow the type? */
 667                 for ( j = 0; sc->soc_allowed != NULL &&
 668                         sc->soc_allowed[j] != NULL; j++ )
 669                 {
 670                         if( at == sc->soc_allowed[j] ) {
 671                                 return LDAP_SUCCESS;
 672                         }
 673                 }
 674         }
 675
 676         /* check that the type appears as req or opt in at least one oc */
 677         for ( i = 0; ocl[i].bv_val != NULL; i++ ) {
 678                 /* if we know about the oc */
 679                 ObjectClass     *oc = oc_bvfind( &ocl[i] );
 680                 if ( oc != NULL && oc->soc_kind != LDAP_SCHEMA_ABSTRACT &&
 681                         ( sc == NULL || oc->soc_kind == LDAP_SCHEMA_AUXILIARY ))
 682                 {
 683                         /* does it require the type? */
 684                         for ( j = 0; oc->soc_required != NULL &&
 685                                 oc->soc_required[j] != NULL; j++ )
 686                         {
 687                                 if( at == oc->soc_required[j] ) {
 688                                         return LDAP_SUCCESS;
 689                                 }
 690                         }
 691                         /* does it allow the type? */
 692                         for ( j = 0; oc->soc_allowed != NULL &&
 693                                 oc->soc_allowed[j] != NULL; j++ )
 694                         {
 695                                 if( at == oc->soc_allowed[j] ) {
 696                                         return LDAP_SUCCESS;
 697                                 }
 698                         }
 699                 }
 700         }
 701
 702         /* not allowed by any oc */
 703         return LDAP_OBJECT_CLASS_VIOLATION;
 704 }
 705
 706 /*
 707  * Determine the structural object class from a set of OIDs
 708  */
 709 int structural_class(
 710         BerVarray ocs,
 711         struct berval *scbv,
 712         ObjectClass **scp,
 713         const char **text,
 714         char *textbuf, size_t textlen )
 715 {
 716         int i;
 717         ObjectClass *oc;
 718         ObjectClass *sc = NULL;
 719         int scn = -1;
 720
 721         *text = "structural_class: internal error";
 722         scbv->bv_len = 0;
 723
 724         for( i=0; ocs[i].bv_val; i++ ) {
 725                 oc = oc_bvfind( &ocs[i] );
 726
 727                 if( oc == NULL ) {
 728                         snprintf( textbuf, textlen,
 729                                 "unrecognized objectClass '%s'",
 730                                 ocs[i].bv_val );
 731                         *text = textbuf;
 732                         return LDAP_OBJECT_CLASS_VIOLATION;
 733                 }
 734
 735                 if( oc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 736                         if( sc == NULL || is_object_subclass( sc, oc ) ) {
 737                                 sc = oc;
 738                                 scn = i;
 739
 740                         } else if ( !is_object_subclass( oc, sc ) ) {
 741                                 int j;
 742                                 ObjectClass *xc = NULL;
 743
 744                                 /* find common superior */
 745                                 for( j=i+1; ocs[j].bv_val; j++ ) {
 746                                         xc = oc_bvfind( &ocs[j] );
 747
 748                                         if( xc == NULL ) {
 749                                                 snprintf( textbuf, textlen,
 750                                                         "unrecognized objectClass '%s'",
 751                                                         ocs[i].bv_val );
 752                                                 *text = textbuf;
 753                                                 return LDAP_OBJECT_CLASS_VIOLATION;
 754                                         }
 755
 756                                         if( xc->soc_kind != LDAP_SCHEMA_STRUCTURAL ) {
 757                                                 xc = NULL;
 758                                                 continue;
 759                                         }
 760
 761                                         if( is_object_subclass( sc, xc ) &&
 762                                                 is_object_subclass( oc, xc ) )
 763                                         {
 764                                                 /* found common subclass */
 765                                                 break;
 766                                         }
 767
 768                                         xc = NULL;
 769                                 }
 770
 771                                 if( xc == NULL ) {
 772                                         /* no common subclass */
 773                                         snprintf( textbuf, textlen,
 774                                                 "invalid structural object class chain (%s/%s)",
 775                                                 ocs[scn].bv_val, ocs[i].bv_val );
 776                                         *text = textbuf;
 777                                         return LDAP_OBJECT_CLASS_VIOLATION;
 778                                 }
 779                         }
 780                 }
 781         }
 782
 783         if( scp ) {
 784                 *scp = sc;
 785         }
 786
 787         if( sc == NULL ) {
 788                 *text = "no structural object class provided";
 789                 return LDAP_OBJECT_CLASS_VIOLATION;
 790         }
 791
 792         if( scn < 0 ) {
 793                 *text = "invalid structural object class";
 794                 return LDAP_OBJECT_CLASS_VIOLATION;
 795         }
 796
 797         *scbv = ocs[scn];
 798
 799         if( scbv->bv_len == 0 ) {
 800                 *text = "invalid structural object class";
 801                 return LDAP_OBJECT_CLASS_VIOLATION;
 802         }
 803
 804         return LDAP_SUCCESS;
 805 }
 806
 807 /*
 808  * Return structural object class from list of modifications
 809  */
 810 int mods_structural_class(
 811         Modifications *mods,
 812         struct berval *sc,
 813         const char **text,
 814         char *textbuf, size_t textlen )
 815 {
 816         Modifications *ocmod = NULL;
 817
 818         for( ; mods != NULL; mods = mods->sml_next ) {
 819                 if( mods->sml_desc == slap_schema.si_ad_objectClass ) {
 820                         if( ocmod != NULL ) {
 821                                 *text = "entry has multiple objectClass attributes";
 822                                 return LDAP_OBJECT_CLASS_VIOLATION;
 823                         }
 824                         ocmod = mods;
 825                 }
 826         }
 827
 828         if( ocmod == NULL ) {
 829                 *text = "entry has no objectClass attribute";
 830                 return LDAP_OBJECT_CLASS_VIOLATION;
 831         }
 832
 833         if( ocmod->sml_bvalues == NULL || ocmod->sml_bvalues[0].bv_val == NULL ) {
 834                 *text = "objectClass attribute has no values";
 835                 return LDAP_OBJECT_CLASS_VIOLATION;
 836         }
 837
 838         return structural_class( ocmod->sml_bvalues, sc, NULL,
 839                 text, textbuf, textlen );
 840 }