git.sur5r.net Git - openldap/blob - servers/slapd/back-mdb/modify.c

   1 /* modify.c - mdb backend modify routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2016 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
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21 #include <ac/time.h>
  22
  23 #include "back-mdb.h"
  24
  25 static struct berval scbva[] = {
  26         BER_BVC("glue"),
  27         BER_BVNULL
  28 };
  29
  30 static void
  31 mdb_modify_idxflags(
  32         Operation *op,
  33         AttributeDescription *desc,
  34         int got_delete,
  35         Attribute *newattrs,
  36         Attribute *oldattrs )
  37 {
  38         struct berval   ix_at;
  39         AttrInfo        *ai;
  40
  41         /* check if modified attribute was indexed
  42          * but not in case of NOOP... */
  43         ai = mdb_index_mask( op->o_bd, desc, &ix_at );
  44         if ( ai ) {
  45                 if ( got_delete ) {
  46                         Attribute       *ap;
  47                         struct berval   ix2;
  48
  49                         ap = attr_find( oldattrs, desc );
  50                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
  51
  52                         /* Find all other attrs that index to same slot */
  53                         for ( ap = newattrs; ap; ap = ap->a_next ) {
  54                                 ai = mdb_index_mask( op->o_bd, ap->a_desc, &ix2 );
  55                                 if ( ai && ix2.bv_val == ix_at.bv_val )
  56                                         ap->a_flags |= SLAP_ATTR_IXADD;
  57                         }
  58
  59                 } else {
  60                         Attribute       *ap;
  61
  62                         ap = attr_find( newattrs, desc );
  63                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
  64                 }
  65         }
  66 }
  67
  68 int mdb_modify_internal(
  69         Operation *op,
  70         MDB_txn *tid,
  71         Modifications *modlist,
  72         Entry *e,
  73         const char **text,
  74         char *textbuf,
  75         size_t textlen )
  76 {
  77         struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
  78         int rc, err;
  79         Modification    *mod;
  80         Modifications   *ml;
  81         Attribute       *save_attrs;
  82         Attribute       *ap, *aold, *anew;
  83         int                     glue_attr_delete = 0;
  84         int                     softop, chkpresent;
  85         int                     got_delete;
  86         int                     a_flags;
  87         MDB_cursor      *mvc = NULL;
  88
  89         Debug( LDAP_DEBUG_TRACE, "mdb_modify_internal: 0x%08lx: %s\n",
  90                 e->e_id, e->e_dn, 0);
  91
  92         if ( !acl_check_modlist( op, e, modlist )) {
  93                 return LDAP_INSUFFICIENT_ACCESS;
  94         }
  95
  96         /* save_attrs will be disposed of by caller */
  97         save_attrs = e->e_attrs;
  98         e->e_attrs = attrs_dup( e->e_attrs );
  99
 100         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
 101                 int match;
 102                 mod = &ml->sml_mod;
 103                 switch( mod->sm_op ) {
 104                 case LDAP_MOD_ADD:
 105                 case LDAP_MOD_REPLACE:
 106                         if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) {
 107                                 value_match( &match, slap_schema.si_ad_structuralObjectClass,
 108                                         slap_schema.si_ad_structuralObjectClass->
 109                                                 ad_type->sat_equality,
 110                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 111                                         &mod->sm_values[0], &scbva[0], text );
 112                                 if ( !match ) glue_attr_delete = 1;
 113                         }
 114                 }
 115                 if ( glue_attr_delete )
 116                         break;
 117         }
 118
 119         if ( glue_attr_delete ) {
 120                 Attribute       **app = &e->e_attrs;
 121                 while ( *app != NULL ) {
 122                         if ( !is_at_operational( (*app)->a_desc->ad_type )) {
 123                                 Attribute *save = *app;
 124                                 *app = (*app)->a_next;
 125                                 attr_free( save );
 126                                 continue;
 127                         }
 128                         app = &(*app)->a_next;
 129                 }
 130         }
 131
 132         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
 133                 mod = &ml->sml_mod;
 134                 got_delete = 0;
 135
 136                 aold = attr_find( e->e_attrs, mod->sm_desc );
 137                 if (aold)
 138                         a_flags = aold->a_flags;
 139                 else
 140                         a_flags = 0;
 141
 142                 switch ( mod->sm_op ) {
 143                 case LDAP_MOD_ADD:
 144                         softop = 0;
 145                         chkpresent = 0;
 146                         Debug(LDAP_DEBUG_ARGS,
 147                                 "mdb_modify_internal: add %s\n",
 148                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 149
 150 do_add:
 151                         err = modify_add_values( e, mod, get_permissiveModify(op),
 152                                 text, textbuf, textlen );
 153
 154                         if( softop ) {
 155                                 mod->sm_op = SLAP_MOD_SOFTADD;
 156                                 if ( err == LDAP_TYPE_OR_VALUE_EXISTS )
 157                                         err = LDAP_SUCCESS;
 158                         }
 159                         if( chkpresent ) {
 160                                 mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
 161                         }
 162
 163                         if( err != LDAP_SUCCESS ) {
 164                                 Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
 165                                         err, *text, 0);
 166                         } else {
 167                                 if (!aold)
 168                                         anew = attr_find( e->e_attrs, mod->sm_desc );
 169                                 else
 170                                         anew = aold;
 171                                 /* check for big multivalued attrs */
 172                                 if ( anew->a_numvals > mdb->mi_multi_hi )
 173                                         anew->a_flags |= SLAP_ATTR_BIG_MULTI;
 174                                 if ( anew->a_flags & SLAP_ATTR_BIG_MULTI ) {
 175                                         if (!mvc) {
 176                                                 err = mdb_cursor_open( tid, mdb->mi_dbis[MDB_ID2VAL], &mvc );
 177                                                 if (err)
 178                                                         break;
 179                                         }
 180                                         /* if prev was set, just add new values */
 181                                         if (a_flags & SLAP_ATTR_BIG_MULTI ) {
 182                                                 anew = (Attribute *)mod;
 183                                                 /* Tweak nvals */
 184                                                 if (!anew->a_nvals)
 185                                                         anew->a_nvals = anew->a_vals;
 186                                         }
 187                                         err = mdb_mval_put(op, mvc, e->e_id, anew);
 188                                         if (a_flags & SLAP_ATTR_BIG_MULTI ) {
 189                                                 /* Undo nvals tweak */
 190                                                 if (anew->a_nvals == anew->a_vals)
 191                                                         anew->a_nvals = NULL;
 192                                         }
 193                                 }
 194                         }
 195                         break;
 196
 197                 case LDAP_MOD_DELETE:
 198                         if ( glue_attr_delete ) {
 199                                 err = LDAP_SUCCESS;
 200                                 break;
 201                         }
 202
 203                         softop = 0;
 204                         Debug(LDAP_DEBUG_ARGS,
 205                                 "mdb_modify_internal: delete %s\n",
 206                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 207 do_del:
 208                         err = modify_delete_values( e, mod, get_permissiveModify(op),
 209                                 text, textbuf, textlen );
 210
 211                         if (softop) {
 212                                 mod->sm_op = SLAP_MOD_SOFTDEL;
 213                                 if ( err == LDAP_NO_SUCH_ATTRIBUTE ) {
 214                                         err = LDAP_SUCCESS;
 215                                         softop = 2;
 216                                 }
 217                         }
 218
 219                         if( err != LDAP_SUCCESS ) {
 220                                 Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
 221                                         err, *text, 0);
 222                         } else {
 223                                 if (softop != 2)
 224                                         got_delete = 1;
 225                                 /* check for big multivalued attrs */
 226                                 if (a_flags & SLAP_ATTR_BIG_MULTI) {
 227                                         Attribute a_dummy;
 228                                         if (!mvc) {
 229                                                 err = mdb_cursor_open( tid, mdb->mi_dbis[MDB_ID2VAL], &mvc );
 230                                                 if (err)
 231                                                         break;
 232                                         }
 233                                         if ( mod->sm_numvals ) {
 234                                                 anew = attr_find( e->e_attrs, mod->sm_desc );
 235                                                 if ( anew->a_numvals < mdb->mi_multi_lo ) {
 236                                                         anew->a_flags ^= SLAP_ATTR_BIG_MULTI;
 237                                                         anew = NULL;
 238                                                 } else {
 239                                                         anew = (Attribute *)mod;
 240                                                 }
 241                                         } else {
 242                                                 anew = NULL;
 243                                         }
 244                                         if (!anew) {
 245                                         /* delete all values */
 246                                                 anew = &a_dummy;
 247                                                 anew->a_desc = mod->sm_desc;
 248                                                 anew->a_numvals = 0;
 249                                         }
 250                                         err = mdb_mval_del( op, mvc, e->e_id, anew );
 251                                 }
 252                         }
 253                         break;
 254
 255                 case LDAP_MOD_REPLACE:
 256                         Debug(LDAP_DEBUG_ARGS,
 257                                 "mdb_modify_internal: replace %s\n",
 258                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 259                         err = modify_replace_values( e, mod, get_permissiveModify(op),
 260                                 text, textbuf, textlen );
 261                         if( err != LDAP_SUCCESS ) {
 262                                 Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
 263                                         err, *text, 0);
 264                         } else {
 265                                 got_delete = 1;
 266                                 if (a_flags & SLAP_ATTR_BIG_MULTI) {
 267                                         Attribute a_dummy;
 268                                         if (!mvc) {
 269                                                 err = mdb_cursor_open( tid, mdb->mi_dbis[MDB_ID2VAL], &mvc );
 270                                                 if (err)
 271                                                         break;
 272                                         }
 273                                         /* delete all values */
 274                                         anew = &a_dummy;
 275                                         anew->a_desc = mod->sm_desc;
 276                                         anew->a_numvals = 0;
 277                                         err = mdb_mval_del( op, mvc, e->e_id, anew );
 278                                         if (err)
 279                                                 break;
 280                                 }
 281                                 anew = attr_find( e->e_attrs, mod->sm_desc );
 282                                 if (mod->sm_numvals >= mdb->mi_multi_lo) {
 283                                         anew->a_flags |= SLAP_ATTR_BIG_MULTI;
 284                                         if (!mvc) {
 285                                                 err = mdb_cursor_open( tid, mdb->mi_dbis[MDB_ID2VAL], &mvc );
 286                                                 if (err)
 287                                                         break;
 288                                         }
 289                                         err = mdb_mval_put(op, mvc, e->e_id, anew);
 290                                 } else if (anew) {
 291                                         /* revert back to normal attr */
 292                                         anew->a_flags &= ~SLAP_ATTR_BIG_MULTI;
 293                                 }
 294                         }
 295                         break;
 296
 297                 case LDAP_MOD_INCREMENT:
 298                         Debug(LDAP_DEBUG_ARGS,
 299                                 "mdb_modify_internal: increment %s\n",
 300                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 301                         err = modify_increment_values( e, mod, get_permissiveModify(op),
 302                                 text, textbuf, textlen );
 303                         if( err != LDAP_SUCCESS ) {
 304                                 Debug(LDAP_DEBUG_ARGS,
 305                                         "mdb_modify_internal: %d %s\n",
 306                                         err, *text, 0);
 307                         } else {
 308                                 got_delete = 1;
 309                         }
 310                         break;
 311
 312                 case SLAP_MOD_SOFTADD:
 313                         Debug(LDAP_DEBUG_ARGS,
 314                                 "mdb_modify_internal: softadd %s\n",
 315                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 316                         /* Avoid problems in index_add_mods()
 317                          * We need to add index if necessary.
 318                          */
 319                         mod->sm_op = LDAP_MOD_ADD;
 320                         softop = 1;
 321                         goto do_add;
 322
 323                 case SLAP_MOD_SOFTDEL:
 324                         Debug(LDAP_DEBUG_ARGS,
 325                                 "mdb_modify_internal: softdel %s\n",
 326                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 327                         /* Avoid problems in index_delete_mods()
 328                          * We need to add index if necessary.
 329                          */
 330                         mod->sm_op = LDAP_MOD_DELETE;
 331                         softop = 1;
 332                         goto do_del;
 333
 334                 case SLAP_MOD_ADD_IF_NOT_PRESENT:
 335                         if ( attr_find( e->e_attrs, mod->sm_desc ) != NULL ) {
 336                                 /* skip */
 337                                 err = LDAP_SUCCESS;
 338                                 break;
 339                         }
 340
 341                         Debug(LDAP_DEBUG_ARGS,
 342                                 "mdb_modify_internal: add_if_not_present %s\n",
 343                                 mod->sm_desc->ad_cname.bv_val, 0, 0);
 344                         /* Avoid problems in index_add_mods()
 345                          * We need to add index if necessary.
 346                          */
 347                         mod->sm_op = LDAP_MOD_ADD;
 348                         chkpresent = 1;
 349                         goto do_add;
 350
 351                 default:
 352                         Debug(LDAP_DEBUG_ANY, "mdb_modify_internal: invalid op %d\n",
 353                                 mod->sm_op, 0, 0);
 354                         *text = "Invalid modify operation";
 355                         err = LDAP_OTHER;
 356                         Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
 357                                 err, *text, 0);
 358                 }
 359
 360                 if ( err != LDAP_SUCCESS ) {
 361                         attrs_free( e->e_attrs );
 362                         e->e_attrs = save_attrs;
 363                         /* unlock entry, delete from cache */
 364                         return err;
 365                 }
 366
 367                 /* If objectClass was modified, reset the flags */
 368                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
 369                         e->e_ocflags = 0;
 370                 }
 371
 372                 if ( glue_attr_delete ) e->e_ocflags = 0;
 373
 374
 375                 /* check if modified attribute was indexed
 376                  * but not in case of NOOP... */
 377                 if ( !op->o_noop ) {
 378                         mdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
 379                 }
 380         }
 381
 382         /* check that the entry still obeys the schema */
 383         ap = NULL;
 384         rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
 385                 text, textbuf, textlen );
 386         if ( rc != LDAP_SUCCESS || op->o_noop ) {
 387                 attrs_free( e->e_attrs );
 388                 /* clear the indexing flags */
 389                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 390                         ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
 391                 }
 392                 e->e_attrs = save_attrs;
 393
 394                 if ( rc != LDAP_SUCCESS ) {
 395                         Debug( LDAP_DEBUG_ANY,
 396                                 "entry failed schema check: %s\n",
 397                                 *text, 0, 0 );
 398                 }
 399
 400                 /* if NOOP then silently revert to saved attrs */
 401                 return rc;
 402         }
 403
 404         /* structuralObjectClass modified! */
 405         if ( ap ) {
 406                 assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
 407                 if ( !op->o_noop ) {
 408                         mdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
 409                                 1, e->e_attrs, save_attrs );
 410                 }
 411         }
 412
 413         /* update the indices of the modified attributes */
 414
 415         /* start with deleting the old index entries */
 416         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
 417                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 418                         struct berval *vals;
 419                         Attribute *a2;
 420                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
 421                         a2 = attr_find( e->e_attrs, ap->a_desc );
 422                         if ( a2 ) {
 423                                 /* need to detect which values were deleted */
 424                                 int i, j;
 425                                 /* let add know there were deletes */
 426                                 if ( a2->a_flags & SLAP_ATTR_IXADD )
 427                                         a2->a_flags |= SLAP_ATTR_IXDEL;
 428                                 vals = op->o_tmpalloc( (ap->a_numvals + 1) *
 429                                         sizeof(struct berval), op->o_tmpmemctx );
 430                                 j = 0;
 431                                 for ( i=0; i < ap->a_numvals; i++ ) {
 432                                         rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 433                                                 &ap->a_nvals[i], NULL, op->o_tmpmemctx );
 434                                         /* Save deleted values */
 435                                         if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
 436                                                 vals[j++] = ap->a_nvals[i];
 437                                 }
 438                                 BER_BVZERO(vals+j);
 439                         } else {
 440                                 /* attribute was completely deleted */
 441                                 vals = ap->a_nvals;
 442                         }
 443                         rc = 0;
 444                         if ( !BER_BVISNULL( vals )) {
 445                                 rc = mdb_index_values( op, tid, ap->a_desc,
 446                                         vals, e->e_id, SLAP_INDEX_DELETE_OP );
 447                                 if ( rc != LDAP_SUCCESS ) {
 448                                         Debug( LDAP_DEBUG_ANY,
 449                                                 "%s: attribute \"%s\" index delete failure\n",
 450                                                 op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 451                                         attrs_free( e->e_attrs );
 452                                         e->e_attrs = save_attrs;
 453                                 }
 454                         }
 455                         if ( vals != ap->a_nvals )
 456                                 op->o_tmpfree( vals, op->o_tmpmemctx );
 457                         if ( rc ) return rc;
 458                 }
 459         }
 460
 461         /* add the new index entries */
 462         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
 463                 if (ap->a_flags & SLAP_ATTR_IXADD) {
 464                         ap->a_flags &= ~SLAP_ATTR_IXADD;
 465                         if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
 466                                 /* if any values were deleted, we must readd index
 467                                  * for all remaining values.
 468                                  */
 469                                 ap->a_flags &= ~SLAP_ATTR_IXDEL;
 470                                 rc = mdb_index_values( op, tid, ap->a_desc,
 471                                         ap->a_nvals,
 472                                         e->e_id, SLAP_INDEX_ADD_OP );
 473                         } else {
 474                                 int found = 0;
 475                                 /* if this was only an add, we only need to index
 476                                  * the added values.
 477                                  */
 478                                 for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
 479                                         struct berval *vals;
 480                                         if ( ml->sml_desc != ap->a_desc || !ml->sml_numvals )
 481                                                 continue;
 482                                         found = 1;
 483                                         switch( ml->sml_op ) {
 484                                         case LDAP_MOD_ADD:
 485                                         case LDAP_MOD_REPLACE:
 486                                         case LDAP_MOD_INCREMENT:
 487                                         case SLAP_MOD_SOFTADD:
 488                                         case SLAP_MOD_ADD_IF_NOT_PRESENT:
 489                                                 if ( ml->sml_op == LDAP_MOD_INCREMENT )
 490                                                         vals = ap->a_nvals;
 491                                                 else if ( ml->sml_nvalues )
 492                                                         vals = ml->sml_nvalues;
 493                                                 else
 494                                                         vals = ml->sml_values;
 495                                                 rc = mdb_index_values( op, tid, ap->a_desc,
 496                                                         vals, e->e_id, SLAP_INDEX_ADD_OP );
 497                                                 break;
 498                                         }
 499                                         if ( rc )
 500                                                 break;
 501                                 }
 502                                 /* This attr was affected by a modify of a subtype, so
 503                                  * there was no direct match in the modlist. Just readd
 504                                  * all of its values.
 505                                  */
 506                                 if ( !found ) {
 507                                         rc = mdb_index_values( op, tid, ap->a_desc,
 508                                                 ap->a_nvals,
 509                                                 e->e_id, SLAP_INDEX_ADD_OP );
 510                                 }
 511                         }
 512                         if ( rc != LDAP_SUCCESS ) {
 513                                 Debug( LDAP_DEBUG_ANY,
 514                                        "%s: attribute \"%s\" index add failure\n",
 515                                         op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
 516                                 attrs_free( e->e_attrs );
 517                                 e->e_attrs = save_attrs;
 518                                 return rc;
 519                         }
 520                 }
 521         }
 522
 523         return rc;
 524 }
 525
 526
 527 int
 528 mdb_modify( Operation *op, SlapReply *rs )
 529 {
 530         struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
 531         Entry           *e = NULL;
 532         int             manageDSAit = get_manageDSAit( op );
 533         char textbuf[SLAP_TEXT_BUFLEN];
 534         size_t textlen = sizeof textbuf;
 535         MDB_txn *txn = NULL;
 536         mdb_op_info opinfo = {{{ 0 }}}, *moi = &opinfo;
 537         Entry           dummy = {0};
 538
 539         LDAPControl **preread_ctrl = NULL;
 540         LDAPControl **postread_ctrl = NULL;
 541         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 542         int num_ctrls = 0;
 543         int numads = mdb->mi_numads;
 544
 545         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(mdb_modify) ": %s\n",
 546                 op->o_req_dn.bv_val, 0, 0 );
 547
 548 #ifdef LDAP_X_TXN
 549         if( op->o_txnSpec && txn_preop( op, rs ))
 550                 return rs->sr_err;
 551 #endif
 552
 553         ctrls[num_ctrls] = NULL;
 554
 555         /* begin transaction */
 556         rs->sr_err = mdb_opinfo_get( op, mdb, 0, &moi );
 557         rs->sr_text = NULL;
 558         if( rs->sr_err != 0 ) {
 559                 Debug( LDAP_DEBUG_TRACE,
 560                         LDAP_XSTRING(mdb_modify) ": txn_begin failed: "
 561                         "%s (%d)\n", mdb_strerror(rs->sr_err), rs->sr_err, 0 );
 562                 rs->sr_err = LDAP_OTHER;
 563                 rs->sr_text = "internal error";
 564                 goto return_results;
 565         }
 566         txn = moi->moi_txn;
 567
 568         /* Don't touch the opattrs, if this is a contextCSN update
 569          * initiated from updatedn */
 570         if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
 571                  op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
 572
 573                 slap_mods_opattrs( op, &op->orm_modlist, 1 );
 574         }
 575
 576         /* get entry or ancestor */
 577         rs->sr_err = mdb_dn2entry( op, txn, NULL, &op->o_req_ndn, &e, NULL, 1 );
 578
 579         if ( rs->sr_err != 0 ) {
 580                 Debug( LDAP_DEBUG_TRACE,
 581                         LDAP_XSTRING(mdb_modify) ": dn2entry failed (%d)\n",
 582                         rs->sr_err, 0, 0 );
 583                 switch( rs->sr_err ) {
 584                 case MDB_NOTFOUND:
 585                         break;
 586                 case LDAP_BUSY:
 587                         rs->sr_text = "ldap server busy";
 588                         goto return_results;
 589                 default:
 590                         rs->sr_err = LDAP_OTHER;
 591                         rs->sr_text = "internal error";
 592                         goto return_results;
 593                 }
 594         }
 595
 596         /* acquire and lock entry */
 597         /* FIXME: dn2entry() should return non-glue entry */
 598         if (( rs->sr_err == MDB_NOTFOUND ) ||
 599                 ( !manageDSAit && e && is_entry_glue( e )))
 600         {
 601                 if ( e != NULL ) {
 602                         rs->sr_matched = ch_strdup( e->e_dn );
 603                         if ( is_entry_referral( e )) {
 604                                 BerVarray ref = get_entry_referrals( op, e );
 605                                 rs->sr_ref = referral_rewrite( ref, &e->e_name,
 606                                         &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 607                                 ber_bvarray_free( ref );
 608                         } else {
 609                                 rs->sr_ref = NULL;
 610                         }
 611                         mdb_entry_return( op, e );
 612                         e = NULL;
 613
 614                 } else {
 615                         rs->sr_ref = referral_rewrite( default_referral, NULL,
 616                                 &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 617                 }
 618
 619                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 620                 rs->sr_err = LDAP_REFERRAL;
 621                 send_ldap_result( op, rs );
 622                 goto done;
 623         }
 624
 625         if ( !manageDSAit && is_entry_referral( e ) ) {
 626                 /* entry is a referral, don't allow modify */
 627                 rs->sr_ref = get_entry_referrals( op, e );
 628
 629                 Debug( LDAP_DEBUG_TRACE,
 630                         LDAP_XSTRING(mdb_modify) ": entry is referral\n",
 631                         0, 0, 0 );
 632
 633                 rs->sr_err = LDAP_REFERRAL;
 634                 rs->sr_matched = e->e_name.bv_val;
 635                 rs->sr_flags = REP_REF_MUSTBEFREED;
 636                 send_ldap_result( op, rs );
 637                 rs->sr_matched = NULL;
 638                 goto done;
 639         }
 640
 641         if ( get_assert( op ) &&
 642                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 643         {
 644                 rs->sr_err = LDAP_ASSERTION_FAILED;
 645                 goto return_results;
 646         }
 647
 648         if( op->o_preread ) {
 649                 if( preread_ctrl == NULL ) {
 650                         preread_ctrl = &ctrls[num_ctrls++];
 651                         ctrls[num_ctrls] = NULL;
 652                 }
 653                 if ( slap_read_controls( op, rs, e,
 654                         &slap_pre_read_bv, preread_ctrl ) )
 655                 {
 656                         Debug( LDAP_DEBUG_TRACE,
 657                                 "<=- " LDAP_XSTRING(mdb_modify) ": pre-read "
 658                                 "failed!\n", 0, 0, 0 );
 659                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 660                                 /* FIXME: is it correct to abort
 661                                  * operation if control fails? */
 662                                 goto return_results;
 663                         }
 664                 }
 665         }
 666
 667         /* Modify the entry */
 668         dummy = *e;
 669         rs->sr_err = mdb_modify_internal( op, txn, op->orm_modlist,
 670                 &dummy, &rs->sr_text, textbuf, textlen );
 671
 672         if( rs->sr_err != LDAP_SUCCESS ) {
 673                 Debug( LDAP_DEBUG_TRACE,
 674                         LDAP_XSTRING(mdb_modify) ": modify failed (%d)\n",
 675                         rs->sr_err, 0, 0 );
 676                 /* Only free attrs if they were dup'd.  */
 677                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 678                 goto return_results;
 679         }
 680
 681         /* change the entry itself */
 682         rs->sr_err = mdb_id2entry_update( op, txn, NULL, &dummy );
 683         if ( rs->sr_err != 0 ) {
 684                 Debug( LDAP_DEBUG_TRACE,
 685                         LDAP_XSTRING(mdb_modify) ": id2entry update failed " "(%d)\n",
 686                         rs->sr_err, 0, 0 );
 687                 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ) {
 688                         rs->sr_text = "entry too big";
 689                 } else {
 690                         rs->sr_err = LDAP_OTHER;
 691                         rs->sr_text = "entry update failed";
 692                 }
 693                 goto return_results;
 694         }
 695
 696         if( op->o_postread ) {
 697                 if( postread_ctrl == NULL ) {
 698                         postread_ctrl = &ctrls[num_ctrls++];
 699                         ctrls[num_ctrls] = NULL;
 700                 }
 701                 if( slap_read_controls( op, rs, &dummy,
 702                         &slap_post_read_bv, postread_ctrl ) )
 703                 {
 704                         Debug( LDAP_DEBUG_TRACE,
 705                                 "<=- " LDAP_XSTRING(mdb_modify)
 706                                 ": post-read failed!\n", 0, 0, 0 );
 707                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 708                                 /* FIXME: is it correct to abort
 709                                  * operation if control fails? */
 710                                 goto return_results;
 711                         }
 712                 }
 713         }
 714
 715         /* Only free attrs if they were dup'd.  */
 716         if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
 717         if( moi == &opinfo ) {
 718                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
 719                 opinfo.moi_oe.oe_key = NULL;
 720                 if( op->o_noop ) {
 721                         mdb->mi_numads = numads;
 722                         mdb_txn_abort( txn );
 723                         rs->sr_err = LDAP_X_NO_OPERATION;
 724                         txn = NULL;
 725                         goto return_results;
 726                 } else {
 727                         rs->sr_err = mdb_txn_commit( txn );
 728                         if ( rs->sr_err )
 729                                 mdb->mi_numads = numads;
 730                         txn = NULL;
 731                 }
 732         }
 733
 734         if( rs->sr_err != 0 ) {
 735                 Debug( LDAP_DEBUG_ANY,
 736                         LDAP_XSTRING(mdb_modify) ": txn_%s failed: %s (%d)\n",
 737                         op->o_noop ? "abort (no-op)" : "commit",
 738                         mdb_strerror(rs->sr_err), rs->sr_err );
 739                 rs->sr_err = LDAP_OTHER;
 740                 rs->sr_text = "commit failed";
 741
 742                 goto return_results;
 743         }
 744
 745         Debug( LDAP_DEBUG_TRACE,
 746                 LDAP_XSTRING(mdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
 747                 op->o_noop ? " (no-op)" : "",
 748                 dummy.e_id, op->o_req_dn.bv_val );
 749
 750         rs->sr_err = LDAP_SUCCESS;
 751         rs->sr_text = NULL;
 752         if( num_ctrls ) rs->sr_ctrls = ctrls;
 753
 754 return_results:
 755         if( dummy.e_attrs ) {
 756                 attrs_free( dummy.e_attrs );
 757         }
 758         send_ldap_result( op, rs );
 759
 760 #if 0
 761         if( rs->sr_err == LDAP_SUCCESS && mdb->bi_txn_cp_kbyte ) {
 762                 TXN_CHECKPOINT( mdb->bi_dbenv,
 763                         mdb->bi_txn_cp_kbyte, mdb->bi_txn_cp_min, 0 );
 764         }
 765 #endif
 766
 767 done:
 768         slap_graduate_commit_csn( op );
 769
 770         if( moi == &opinfo ) {
 771                 if( txn != NULL ) {
 772                         mdb->mi_numads = numads;
 773                         mdb_txn_abort( txn );
 774                 }
 775                 if ( opinfo.moi_oe.oe_key ) {
 776                         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
 777                 }
 778         } else {
 779                 moi->moi_ref--;
 780         }
 781
 782         if( e != NULL ) {
 783                 mdb_entry_return( op, e );
 784         }
 785
 786         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 787                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 788                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 789         }
 790         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 791                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 792                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 793         }
 794
 795         rs->sr_text = NULL;
 796
 797         return rs->sr_err;
 798 }