git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/modrdn.c

   1 /* modrdn.c - ldbm backend modrdn routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright 1999, Juan C. Gomez, All rights reserved.
  17  * This software is not subject to any license of Silicon Graphics
  18  * Inc. or Purdue University.
  19  *
  20  * Redistribution and use in source and binary forms are permitted
  21  * without restriction or fee of any kind as long as this notice
  22  * is preserved.
  23  */
  24
  25 #include "portable.h"
  26
  27 #include <stdio.h>
  28
  29 #include <ac/string.h>
  30 #include <ac/socket.h>
  31
  32 #include "slap.h"
  33 #include "back-ldbm.h"
  34 #include "proto-back-ldbm.h"
  35
  36 int
  37 ldbm_back_modrdn(
  38     Operation   *op,
  39     SlapReply   *rs )
  40 {
  41         AttributeDescription *children = slap_schema.si_ad_children;
  42         AttributeDescription *entry = slap_schema.si_ad_entry;
  43         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  44         struct berval   p_dn, p_ndn;
  45         struct berval   new_dn = BER_BVNULL, new_ndn = BER_BVNULL;
  46         struct berval   old_ndn = BER_BVNULL;
  47         Entry           *e, *p = NULL;
  48         Entry           *matched;
  49         /* LDAP v2 supporting correct attribute handling. */
  50         LDAPRDN         new_rdn = NULL;
  51         LDAPRDN         old_rdn = NULL;
  52         int             rc_id = 0;
  53         ID              id = NOID;
  54         char            textbuf[SLAP_TEXT_BUFLEN];
  55         size_t          textlen = sizeof textbuf;
  56         /* Added to support newSuperior */
  57         Entry           *np = NULL;     /* newSuperior Entry */
  58         struct berval   *np_ndn = NULL; /* newSuperior ndn */
  59         struct berval   *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  60         /* Used to interface with ldbm_modify_internal() */
  61         int             manageDSAit = get_manageDSAit( op );
  62
  63         Debug( LDAP_DEBUG_TRACE,
  64                 "==>ldbm_back_modrdn: dn: %s newSuperior=%s\n",
  65                 op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "NULL",
  66                 ( op->oq_modrdn.rs_newSup && op->oq_modrdn.rs_newSup->bv_len )
  67                         ? op->oq_modrdn.rs_newSup->bv_val : "NULL", 0 );
  68
  69         if ( !SLAP_SHADOW( op->o_bd ))
  70                 slap_mods_opattrs( op, &op->orr_modlist, 1 );
  71
  72         /* grab giant lock for writing */
  73         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  74
  75         e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched );
  76
  77         /* get entry with writer lock */
  78         /* FIXME: dn2entry() should return non-glue entry */
  79         if (( e == NULL  ) || ( !manageDSAit && e && is_entry_glue( e ))) {
  80                 if ( matched != NULL ) {
  81                         rs->sr_matched = strdup( matched->e_dn );
  82                         rs->sr_ref = is_entry_referral( matched )
  83                                 ? get_entry_referrals( op, matched )
  84                                 : NULL;
  85                         cache_return_entry_r( &li->li_cache, matched );
  86                 } else {
  87                         rs->sr_ref = referral_rewrite( default_referral, NULL,
  88                                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  89                 }
  90
  91                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  92
  93                 rs->sr_err = LDAP_REFERRAL;
  94                 send_ldap_result( op, rs );
  95
  96                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  97                 free( (char *)rs->sr_matched );
  98                 rs->sr_ref = NULL;
  99                 rs->sr_matched = NULL;
 100                 return rs->sr_err;
 101         }
 102
 103         /* check entry for "entry" acl */
 104         if ( ! access_allowed( op, e, entry, NULL, ACL_WRITE, NULL ) )
 105         {
 106                 Debug( LDAP_DEBUG_TRACE,
 107                         "<=- ldbm_back_modrdn: no write access to entry\n", 0,
 108                         0, 0 );
 109
 110                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 111                         "no write access to entry" );
 112
 113                 goto return_results;
 114         }
 115
 116         if (!manageDSAit && is_entry_referral( e ) ) {
 117                 /* parent is a referral, don't allow add */
 118                 /* parent is an alias, don't allow add */
 119                 rs->sr_ref = get_entry_referrals( op, e );
 120
 121                 Debug( LDAP_DEBUG_TRACE, "entry %s is referral\n", e->e_dn,
 122                     0, 0 );
 123
 124                 rs->sr_err = LDAP_REFERRAL;
 125                 rs->sr_matched = e->e_name.bv_val;
 126                 send_ldap_result( op, rs );
 127
 128                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 129                 rs->sr_ref = NULL;
 130                 rs->sr_matched = NULL;
 131                 goto return_results;
 132         }
 133
 134         if ( has_children( op->o_bd, e ) ) {
 135                 Debug( LDAP_DEBUG_TRACE, "entry %s has children\n", e->e_dn,
 136                     0, 0 );
 137
 138                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 139                     "subtree rename not supported" );
 140                 goto return_results;
 141         }
 142
 143         if ( be_issuffix( op->o_bd, &e->e_nname ) ) {
 144                 p_ndn = slap_empty_bv ;
 145         } else {
 146                 dnParent( &e->e_nname, &p_ndn );
 147         }
 148
 149         if ( p_ndn.bv_len != 0 ) {
 150                 /* Make sure parent entry exist and we can write its
 151                  * children.
 152                  */
 153
 154                 if( (p = dn2entry_w( op->o_bd, &p_ndn, NULL )) == NULL) {
 155                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 156                                 0, 0, 0);
 157
 158                         send_ldap_error( op, rs, LDAP_OTHER,
 159                                 "parent entry does not exist" );
 160
 161                         goto return_results;
 162                 }
 163         } else {
 164                 p = (Entry *)&slap_entry_root;
 165         }
 166
 167         /* check parent for "children" acl */
 168         rs->sr_err = access_allowed( op, p, children, NULL,
 169                         op->oq_modrdn.rs_newSup != NULL ?
 170                                 ACL_WDEL : ACL_WRITE,
 171                         NULL );
 172
 173         if ( BER_BVISEMPTY( &p_ndn ))
 174                 p = NULL;
 175
 176         if ( !rs->sr_err )
 177         {
 178                 Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 179                         0, 0 );
 180
 181                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 182                         NULL );
 183                 goto return_results;
 184         }
 185
 186         Debug( LDAP_DEBUG_TRACE,
 187                    "ldbm_back_modrdn: wr to children of entry %s OK\n",
 188                    p_ndn.bv_val, 0, 0 );
 189
 190         if ( p_ndn.bv_val == slap_empty_bv.bv_val ) {
 191                 p_dn = slap_empty_bv;
 192         } else {
 193                 dnParent( &e->e_name, &p_dn );
 194         }
 195
 196         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 197                    p_dn.bv_val, 0, 0 );
 198
 199         new_parent_dn = &p_dn;  /* New Parent unless newSuperior given */
 200
 201         if ( op->oq_modrdn.rs_newSup != NULL ) {
 202                 Debug( LDAP_DEBUG_TRACE,
 203                         "ldbm_back_modrdn: new parent \"%s\" requested...\n",
 204                         op->oq_modrdn.rs_newSup->bv_val, 0, 0 );
 205
 206                 np_ndn = op->oq_modrdn.rs_nnewSup;
 207
 208                 /* newSuperior == oldParent? */
 209                 if ( dn_match( &p_ndn, np_ndn ) ) {
 210                         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: "
 211                                 "new parent\"%s\" seems to be the same as the "
 212                                 "old parent \"%s\"\n",
 213                                 op->oq_modrdn.rs_newSup->bv_val, p_dn.bv_val, 0 );
 214
 215                         op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */
 216                 }
 217         }
 218
 219         if ( op->oq_modrdn.rs_newSup != NULL ) {
 220                 /* newSuperior == entry being moved?, if so ==> ERROR */
 221                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 222
 223                 if ( op->oq_modrdn.rs_nnewSup->bv_len ) {
 224                         if( (np = dn2entry_w( op->o_bd, np_ndn, NULL )) == NULL) {
 225                                 Debug( LDAP_DEBUG_TRACE,
 226                                     "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 227                                     np_ndn->bv_val, 0, 0);
 228
 229                                 send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT,
 230                                         "newSuperior not found" );
 231                                 goto return_results;
 232                         }
 233
 234                         Debug( LDAP_DEBUG_TRACE,
 235                                 "ldbm_back_modrdn: wr to new parent OK np=%p, id=%ld\n",
 236                                 (void *) np, np->e_id, 0 );
 237
 238                         /* check newSuperior for "children" acl */
 239                         if ( !access_allowed( op, np, children, NULL,
 240                                               ACL_WADD, NULL ) )
 241                         {
 242                                 Debug( LDAP_DEBUG_TRACE,
 243                                        "ldbm_back_modrdn: no wr to newSup children\n",
 244                                        0, 0, 0 );
 245
 246                                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS, NULL );
 247                                 goto return_results;
 248                         }
 249
 250                         if ( is_entry_alias( np ) ) {
 251                                 /* parent is an alias, don't allow add */
 252                                 Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 );
 253
 254
 255                                 send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
 256                                     "newSuperior is an alias" );
 257
 258                                 goto return_results;
 259                         }
 260
 261                         if ( is_entry_referral( np ) ) {
 262                                 /* parent is a referral, don't allow add */
 263                                 Debug( LDAP_DEBUG_TRACE, "entry (%s) is referral\n",
 264                                         np->e_dn, 0, 0 );
 265
 266                                 send_ldap_error( op, rs, LDAP_OTHER,
 267                                     "newSuperior is a referral" );
 268
 269                                 goto return_results;
 270                         }
 271
 272                 } else {
 273                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 274                                 || be_shadow_update( op ) ) {
 275                                 int     can_access;
 276                                 np = (Entry *)&slap_entry_root;
 277
 278                                 can_access = access_allowed( op, np,
 279                                                 children, NULL, ACL_WADD, NULL );
 280                                 np = NULL;
 281
 282                                 /* check parent for "children" acl */
 283                                 if ( ! can_access ) {
 284                                         Debug( LDAP_DEBUG_TRACE,
 285                                                 "<=- ldbm_back_modrdn: no "
 286                                                 "access to new superior\n", 0, 0, 0 );
 287
 288                                                 send_ldap_error( op, rs,
 289                                                         LDAP_INSUFFICIENT_ACCESS,
 290                                                         NULL );
 291                                                 goto return_results;
 292                                         }
 293
 294                         } else {
 295                                 Debug( LDAP_DEBUG_TRACE,
 296                                         "<=- ldbm_back_modrdn: \"\" "
 297                                         "not allowed as new superior\n",
 298                                         0, 0, 0);
 299
 300                                 send_ldap_error( op, rs,
 301                                         LDAP_INSUFFICIENT_ACCESS,
 302                                         NULL );
 303                                 goto return_results;
 304                         }
 305                 }
 306
 307                 Debug( LDAP_DEBUG_TRACE,
 308                     "ldbm_back_modrdn: wr to new parent's children OK\n",
 309                     0, 0, 0 );
 310
 311                 new_parent_dn = op->oq_modrdn.rs_newSup;
 312         }
 313
 314         /* Build target dn and make sure target entry doesn't exist already. */
 315         build_new_dn( &new_dn, new_parent_dn, &op->oq_modrdn.rs_newrdn, NULL );
 316         dnNormalize( 0, NULL, NULL, &new_dn, &new_ndn, NULL );
 317
 318         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 319             new_ndn.bv_val, 0, 0 );
 320
 321         /* check for abandon */
 322         if ( op->o_abandon ) {
 323                 rs->sr_err = SLAPD_ABANDON;
 324                 goto return_results;
 325         }
 326
 327         if ( ( rc_id = dn2id ( op->o_bd, &new_ndn, &id ) ) || id != NOID ) {
 328                 /* if (rc_id) something bad happened to ldbm cache */
 329                 rs->sr_err = rc_id ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
 330                 send_ldap_result( op, rs );
 331                 goto return_results;
 332         }
 333
 334         Debug( LDAP_DEBUG_TRACE,
 335             "ldbm_back_modrdn: new ndn=%s does not exist\n",
 336             new_ndn.bv_val, 0, 0 );
 337
 338         /* Get attribute type and attribute value of our new rdn, we will
 339          * need to add that to our new entry
 340          */
 341         if ( ldap_bv2rdn( &op->oq_modrdn.rs_newrdn, &new_rdn, (char **)&rs->sr_text,
 342                 LDAP_DN_FORMAT_LDAP ) )
 343         {
 344                 Debug( LDAP_DEBUG_TRACE,
 345                         "ldbm_back_modrdn: can't figure out "
 346                         "type(s)/values(s) of newrdn\n",
 347                         0, 0, 0 );
 348                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX,
 349                                     "unknown type(s) used in RDN" );
 350                 goto return_results;
 351         }
 352
 353         Debug( LDAP_DEBUG_TRACE,
 354                 "ldbm_back_modrdn: new_rdn_type=\"%s\", "
 355                 "new_rdn_val=\"%s\"\n",
 356                 new_rdn[ 0 ]->la_attr.bv_val,
 357                 new_rdn[ 0 ]->la_value.bv_val, 0 );
 358
 359         if ( op->oq_modrdn.rs_deleteoldrdn ) {
 360                 if ( ldap_bv2rdn( &op->o_req_dn, &old_rdn, (char **)&rs->sr_text,
 361                         LDAP_DN_FORMAT_LDAP ) )
 362                 {
 363                         Debug( LDAP_DEBUG_TRACE,
 364                                 "ldbm_back_modrdn: can't figure out "
 365                                 "the old_rdn type(s)/value(s)\n",
 366                                 0, 0, 0 );
 367                         send_ldap_error( op, rs, LDAP_OTHER,
 368                                     "cannot parse RDN from old DN" );
 369                         goto return_results;
 370                 }
 371         }
 372
 373         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 374                0, 0, 0 );
 375
 376         assert( op->orr_modlist != NULL );
 377
 378         /* check for abandon */
 379         if ( op->o_abandon ) {
 380                 rs->sr_err = SLAPD_ABANDON;
 381                 goto return_results;
 382         }
 383
 384         (void) cache_delete_entry( &li->li_cache, e );
 385
 386         free( e->e_dn );
 387         old_ndn = e->e_nname;
 388         e->e_name = new_dn;
 389         e->e_nname = new_ndn;
 390         new_dn.bv_val = NULL;
 391         new_ndn.bv_val = NULL;
 392
 393         /* NOTE: after this you must not free new_dn or new_ndn!
 394          * They are used by cache.
 395          */
 396
 397         /* modify memory copy of entry */
 398         rs->sr_err = ldbm_modify_internal( op, op->orr_modlist, e,
 399                 &rs->sr_text, textbuf, textlen );
 400         switch ( rs->sr_err ) {
 401         case LDAP_SUCCESS:
 402                 break;
 403
 404         default:
 405                 send_ldap_result( op, rs );
 406                 /* FALLTHRU */
 407         case SLAPD_ABANDON:
 408                 goto return_results;
 409         }
 410
 411         /*
 412          * NOTE: the backend MUST delete then add the entry,
 413          *              otherwise indexing may get hosed
 414          * FIXME: if a new ID was used, the add could be done first.
 415          *              that would be safer.
 416          */
 417
 418         /* delete old one */
 419         if ( dn2id_delete( op->o_bd, &old_ndn, e->e_id ) != 0 ) {
 420                 send_ldap_error( op, rs, LDAP_OTHER,
 421                         "DN index delete fail" );
 422                 goto return_results;
 423         }
 424
 425         /* add new one */
 426         if ( dn2id_add( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 427                 /* try to repair old entry - probably hopeless */
 428         if( dn2id_add( op->o_bd, &old_ndn, e->e_id) != 0 ) {
 429                         send_ldap_error( op, rs, LDAP_OTHER,
 430                                 "DN index add and repair failed" );
 431                 } else {
 432                         send_ldap_error( op, rs, LDAP_OTHER,
 433                                 "DN index add failed" );
 434                 }
 435                 goto return_results;
 436         }
 437
 438         /* id2entry index */
 439         if ( id2entry_add( op->o_bd, e ) != 0 ) {
 440                 /* Try to undo */
 441                 int rc;
 442                 rc = dn2id_delete( op->o_bd, &e->e_nname, e->e_id );
 443                 rc |= dn2id_add( op->o_bd, &old_ndn, e->e_id );
 444                 if( rc ) {
 445                         send_ldap_error( op, rs, LDAP_OTHER,
 446                                 "entry update and repair failed" );
 447                 } else {
 448                         send_ldap_error( op, rs, LDAP_OTHER,
 449                                 "entry update failed" );
 450                 }
 451                 goto return_results;
 452         }
 453
 454         (void) cache_update_entry( &li->li_cache, e );
 455
 456         rs->sr_err = LDAP_SUCCESS;
 457         rs->sr_text = NULL;
 458         send_ldap_result( op, rs );
 459         cache_entry_commit( e );
 460
 461 return_results:
 462         if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
 463         if( new_ndn.bv_val != NULL ) free( new_ndn.bv_val );
 464         if( old_ndn.bv_val != NULL ) free( old_ndn.bv_val );
 465
 466         /* LDAP v2 supporting correct attribute handling. */
 467         if ( new_rdn != NULL ) {
 468                 ldap_rdnfree( new_rdn );
 469         }
 470         if ( old_rdn != NULL ) {
 471                 ldap_rdnfree( old_rdn );
 472         }
 473
 474         /* LDAP v3 Support */
 475         if( np != NULL ) {
 476                 /* free new parent and writer lock */
 477                 cache_return_entry_w( &li->li_cache, np );
 478         }
 479
 480         if( p != NULL ) {
 481                 /* free parent and writer lock */
 482                 cache_return_entry_w( &li->li_cache, p );
 483         }
 484
 485         /* free entry and writer lock */
 486         cache_return_entry_w( &li->li_cache, e );
 487         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 488         rs->sr_text = NULL;
 489         return( rs->sr_err );
 490 }