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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2007 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright 1999, Juan C. Gomez, All rights reserved.
  16  * This software is not subject to any license of Silicon Graphics
  17  * Inc. or Purdue University.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * without restriction or fee of any kind as long as this notice
  21  * is preserved.
  22  */
  23 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  24  * All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms are permitted
  27  * provided that this notice is preserved and that due credit is given
  28  * to the University of Michigan at Ann Arbor. The name of the University
  29  * may not be used to endorse or promote products derived from this
  30  * software without specific prior written permission. This software
  31  * is provided ``as is'' without express or implied warranty.
  32  */
  33
  34 #include "portable.h"
  35
  36 #include <stdio.h>
  37
  38 #include <ac/socket.h>
  39 #include <ac/string.h>
  40
  41 #include "slap.h"
  42
  43 int
  44 do_modrdn(
  45     Operation   *op,
  46     SlapReply   *rs
  47 )
  48 {
  49         struct berval   dn = BER_BVNULL;
  50         struct berval   newrdn = BER_BVNULL;
  51         struct berval   newSuperior = BER_BVNULL;
  52         ber_int_t       deloldrdn;
  53
  54         struct berval pnewSuperior = BER_BVNULL;
  55
  56         struct berval nnewSuperior = BER_BVNULL;
  57
  58         ber_len_t       length;
  59
  60         Debug( LDAP_DEBUG_TRACE, "do_modrdn\n", 0, 0, 0 );
  61
  62
  63         /*
  64          * Parse the modrdn request.  It looks like this:
  65          *
  66          *      ModifyRDNRequest := SEQUENCE {
  67          *              entry   DistinguishedName,
  68          *              newrdn  RelativeDistinguishedName
  69          *              deleteoldrdn    BOOLEAN,
  70          *              newSuperior     [0] LDAPDN OPTIONAL (v3 Only!)
  71          *      }
  72          */
  73
  74         if ( ber_scanf( op->o_ber, "{mmb", &dn, &newrdn, &deloldrdn )
  75             == LBER_ERROR )
  76         {
  77                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  78
  79                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  80                 return SLAPD_DISCONNECT;
  81         }
  82
  83         /* Check for newSuperior parameter, if present scan it */
  84
  85         if ( ber_peek_tag( op->o_ber, &length ) == LDAP_TAG_NEWSUPERIOR ) {
  86                 if ( op->o_protocol < LDAP_VERSION3 ) {
  87                         /* Conection record indicates v2 but field
  88                          * newSuperior is present: report error.
  89                          */
  90                         Debug( LDAP_DEBUG_ANY,
  91                             "modrdn(v2): invalid field newSuperior!\n",
  92                             0, 0, 0 );
  93
  94                         send_ldap_discon( op, rs,
  95                                 LDAP_PROTOCOL_ERROR, "newSuperior requires LDAPv3" );
  96                         rs->sr_err = SLAPD_DISCONNECT;
  97                         goto cleanup;
  98                 }
  99
 100                 if ( ber_scanf( op->o_ber, "m", &newSuperior )
 101                      == LBER_ERROR ) {
 102
 103                         Debug( LDAP_DEBUG_ANY, "ber_scanf(\"m\") failed\n",
 104                                 0, 0, 0 );
 105
 106                         send_ldap_discon( op, rs,
 107                                 LDAP_PROTOCOL_ERROR, "decoding error" );
 108                         rs->sr_err = SLAPD_DISCONNECT;
 109                         goto cleanup;
 110                 }
 111                 op->orr_newSup = &pnewSuperior;
 112                 op->orr_nnewSup = &nnewSuperior;
 113         }
 114
 115         Debug( LDAP_DEBUG_ARGS,
 116             "do_modrdn: dn (%s) newrdn (%s) newsuperior (%s)\n",
 117                 dn.bv_val, newrdn.bv_val,
 118                 newSuperior.bv_len ? newSuperior.bv_val : "" );
 119
 120         if ( ber_scanf( op->o_ber, /*{*/ "}") == LBER_ERROR ) {
 121                 Debug( LDAP_DEBUG_ANY, "do_modrdn: ber_scanf failed\n", 0, 0, 0 );
 122
 123                 send_ldap_discon( op, rs,
 124                         LDAP_PROTOCOL_ERROR, "decoding error" );
 125                 rs->sr_err = SLAPD_DISCONNECT;
 126                 goto cleanup;
 127         }
 128
 129         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
 130                 Debug( LDAP_DEBUG_ANY, "do_modrdn: get_ctrls failed\n", 0, 0, 0 );
 131
 132                 /* get_ctrls has sent results.  Now clean up. */
 133                 goto cleanup;
 134         }
 135
 136         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
 137         if( rs->sr_err != LDAP_SUCCESS ) {
 138                 Debug( LDAP_DEBUG_ANY,
 139                         "do_modrdn: invalid dn (%s)\n", dn.bv_val, 0, 0 );
 140                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 141                 goto cleanup;
 142         }
 143
 144         /* FIXME: should have/use rdnPretty / rdnNormalize routines */
 145
 146         rs->sr_err = dnPrettyNormal( NULL, &newrdn, &op->orr_newrdn, &op->orr_nnewrdn, op->o_tmpmemctx );
 147         if( rs->sr_err != LDAP_SUCCESS ) {
 148                 Debug( LDAP_DEBUG_ANY,
 149                         "do_modrdn: invalid newrdn (%s)\n", newrdn.bv_val, 0, 0 );
 150                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" );
 151                 goto cleanup;
 152         }
 153
 154         if( rdn_validate( &op->orr_newrdn ) != LDAP_SUCCESS ) {
 155                 Debug( LDAP_DEBUG_ANY, "do_modrdn: invalid rdn (%s)\n",
 156                         op->orr_newrdn.bv_val, 0, 0 );
 157
 158                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" );
 159                 goto cleanup;
 160         }
 161
 162         if( op->orr_newSup ) {
 163                 rs->sr_err = dnPrettyNormal( NULL, &newSuperior, &pnewSuperior,
 164                         &nnewSuperior, op->o_tmpmemctx );
 165                 if( rs->sr_err != LDAP_SUCCESS ) {
 166                         Debug( LDAP_DEBUG_ANY,
 167                                 "do_modrdn: invalid newSuperior (%s)\n",
 168                                 newSuperior.bv_val, 0, 0 );
 169                         send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid newSuperior" );
 170                         goto cleanup;
 171                 }
 172         }
 173
 174         op->orr_deleteoldrdn = deloldrdn;
 175         op->orr_modlist = NULL;
 176
 177         /* prepare modlist of modifications from old/new RDN */
 178         rs->sr_err = slap_modrdn2mods( op, rs );
 179         if ( rs->sr_err != LDAP_SUCCESS ) {
 180                 send_ldap_result( op, rs );
 181                 goto cleanup;
 182         }
 183
 184         op->o_bd = frontendDB;
 185         rs->sr_err = frontendDB->be_modrdn( op, rs );
 186
 187 #ifdef LDAP_X_TXN
 188         if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {
 189                 /* skip cleanup */
 190         }
 191 #endif
 192
 193 cleanup:
 194         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 195         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 196
 197         op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );
 198         op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );
 199
 200         if ( op->orr_modlist != NULL )
 201                 slap_mods_free( op->orr_modlist, 1 );
 202
 203         if ( !BER_BVISNULL( &pnewSuperior ) ) {
 204                 op->o_tmpfree( pnewSuperior.bv_val, op->o_tmpmemctx );
 205         }
 206         if ( !BER_BVISNULL( &nnewSuperior ) ) {
 207                 op->o_tmpfree( nnewSuperior.bv_val, op->o_tmpmemctx );
 208         }
 209
 210         return rs->sr_err;
 211 }
 212
 213 int
 214 fe_op_modrdn( Operation *op, SlapReply *rs )
 215 {
 216         Backend         *newSuperior_be = NULL;
 217         int             manageDSAit;
 218         struct berval   pdn = BER_BVNULL;
 219         BackendDB       *op_be, *bd = op->o_bd;
 220
 221         if( op->o_req_ndn.bv_len == 0 ) {
 222                 Debug( LDAP_DEBUG_ANY, "do_modrdn: root dse!\n", 0, 0, 0 );
 223
 224                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 225                         "cannot rename the root DSE" );
 226                 goto cleanup;
 227
 228         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 229                 Debug( LDAP_DEBUG_ANY, "do_modrdn: subschema subentry: %s (%ld)\n",
 230                         frontendDB->be_schemandn.bv_val, (long)frontendDB->be_schemandn.bv_len, 0 );
 231
 232                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 233                         "cannot rename subschema subentry" );
 234                 goto cleanup;
 235         }
 236
 237         Statslog( LDAP_DEBUG_STATS, "%s MODRDN dn=\"%s\"\n",
 238             op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 239
 240         manageDSAit = get_manageDSAit( op );
 241
 242         /*
 243          * We could be serving multiple database backends.  Select the
 244          * appropriate one, or send a referral to our "referral server"
 245          * if we don't hold it.
 246          */
 247         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
 248         if ( op->o_bd == NULL ) {
 249                 op->o_bd = bd;
 250                 rs->sr_ref = referral_rewrite( default_referral,
 251                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 252                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 253
 254                 if ( rs->sr_ref != NULL ) {
 255                         rs->sr_err = LDAP_REFERRAL;
 256                         send_ldap_result( op, rs );
 257
 258                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 259                 } else {
 260                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 261                                 "no global superior knowledge" );
 262                 }
 263                 goto cleanup;
 264         }
 265
 266         /* If we've got a glued backend, check the real backend */
 267         op_be = op->o_bd;
 268         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 269                 op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 270         }
 271
 272         /* check restrictions */
 273         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 274                 send_ldap_result( op, rs );
 275                 goto cleanup;
 276         }
 277
 278         /* check for referrals */
 279         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 280                 goto cleanup;
 281         }
 282
 283         /* Make sure that the entry being changed and the newSuperior are in
 284          * the same backend, otherwise we return an error.
 285          */
 286         if( op->orr_newSup ) {
 287                 newSuperior_be = select_backend( op->orr_nnewSup, 0, 0 );
 288
 289                 if ( newSuperior_be != op->o_bd ) {
 290                         /* newSuperior is in different backend */
 291                         send_ldap_error( op, rs, LDAP_AFFECTS_MULTIPLE_DSAS,
 292                                 "cannot rename between DSAs" );
 293
 294                         goto cleanup;
 295                 }
 296         }
 297
 298         /*
 299          * do the modrdn if 1 && (2 || 3)
 300          * 1) there is a modrdn function implemented in this backend;
 301          * 2) this backend is master for what it holds;
 302          * 3) it's a replica and the dn supplied is the update_ndn.
 303          */
 304         if ( op->o_bd->be_modrdn ) {
 305                 /* do the update here */
 306                 int repl_user = be_isupdate( op );
 307                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user )
 308                 {
 309                         op->o_bd = op_be;
 310                         op->o_bd->be_modrdn( op, rs );
 311
 312                         if ( op->o_bd->be_delete ) {
 313                                 struct berval   org_req_dn = BER_BVNULL;
 314                                 struct berval   org_req_ndn = BER_BVNULL;
 315                                 struct berval   org_dn = BER_BVNULL;
 316                                 struct berval   org_ndn = BER_BVNULL;
 317                                 int             org_managedsait;
 318
 319                                 org_req_dn = op->o_req_dn;
 320                                 org_req_ndn = op->o_req_ndn;
 321                                 org_dn = op->o_dn;
 322                                 org_ndn = op->o_ndn;
 323                                 org_managedsait = get_manageDSAit( op );
 324                                 op->o_dn = op->o_bd->be_rootdn;
 325                                 op->o_ndn = op->o_bd->be_rootndn;
 326                                 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 327
 328                                 while ( rs->sr_err == LDAP_SUCCESS &&
 329                                                 op->o_delete_glue_parent ) {
 330                                         op->o_delete_glue_parent = 0;
 331                                         if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 332                                                 slap_callback cb = { NULL };
 333                                                 cb.sc_response = slap_null_cb;
 334                                                 dnParent( &op->o_req_ndn, &pdn );
 335                                                 op->o_req_dn = pdn;
 336                                                 op->o_req_ndn = pdn;
 337                                                 op->o_callback = &cb;
 338                                                 op->o_bd->be_delete( op, rs );
 339                                         } else {
 340                                                 break;
 341                                         }
 342                                 }
 343                                 op->o_managedsait = org_managedsait;
 344                                 op->o_dn = org_dn;
 345                                 op->o_ndn = org_ndn;
 346                                 op->o_req_dn = org_req_dn;
 347                                 op->o_req_ndn = org_req_ndn;
 348                                 op->o_delete_glue_parent = 0;
 349                         }
 350
 351                 } else {
 352                         BerVarray defref = op->o_bd->be_update_refs
 353                                 ? op->o_bd->be_update_refs : default_referral;
 354
 355                         if ( defref != NULL ) {
 356                                 rs->sr_ref = referral_rewrite( defref,
 357                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 358                                 if (!rs->sr_ref) rs->sr_ref = defref;
 359
 360                                 rs->sr_err = LDAP_REFERRAL;
 361                                 send_ldap_result( op, rs );
 362
 363                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 364                         } else {
 365                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 366                                         "shadow context; no update referral" );
 367                         }
 368                 }
 369         } else {
 370                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 371                         "operation not supported within namingContext" );
 372         }
 373
 374 cleanup:;
 375         op->o_bd = bd;
 376         return rs->sr_err;
 377 }
 378
 379 int
 380 slap_modrdn2mods(
 381         Operation       *op,
 382         SlapReply       *rs )
 383 {
 384         int             a_cnt, d_cnt;
 385         LDAPRDN         old_rdn = NULL;
 386         LDAPRDN         new_rdn = NULL;
 387
 388         assert( !BER_BVISEMPTY( &op->oq_modrdn.rs_newrdn ) );
 389         assert( !op->orr_deleteoldrdn || !BER_BVISEMPTY( &op->o_req_dn ) );
 390
 391         if ( ldap_bv2rdn_x( &op->oq_modrdn.rs_newrdn, &new_rdn,
 392                 (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {
 393                 Debug( LDAP_DEBUG_TRACE,
 394                         "slap_modrdn2mods: can't figure out "
 395                         "type(s)/value(s) of newrdn\n", 0, 0, 0 );
 396                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
 397                 rs->sr_text = "unknown type(s) used in RDN";
 398                 goto done;
 399         }
 400
 401         if ( op->oq_modrdn.rs_deleteoldrdn ) {
 402                 if ( ldap_bv2rdn_x( &op->o_req_dn, &old_rdn,
 403                         (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {
 404                         Debug( LDAP_DEBUG_TRACE,
 405                                 "slap_modrdn2mods: can't figure out "
 406                                 "type(s)/value(s) of oldrdn\n", 0, 0, 0 );
 407                         rs->sr_err = LDAP_OTHER;
 408                         rs->sr_text = "cannot parse RDN from old DN";
 409                         goto done;
 410                 }
 411         }
 412         rs->sr_text = NULL;
 413
 414         /* Add new attribute values to the entry */
 415         for ( a_cnt = 0; new_rdn[a_cnt]; a_cnt++ ) {
 416                 AttributeDescription    *desc = NULL;
 417                 Modifications           *mod_tmp;
 418
 419                 rs->sr_err = slap_bv2ad( &new_rdn[a_cnt]->la_attr, &desc, &rs->sr_text );
 420
 421                 if ( rs->sr_err != LDAP_SUCCESS ) {
 422                         Debug( LDAP_DEBUG_TRACE,
 423                                 "slap_modrdn2mods: %s: %s (new)\n",
 424                                 rs->sr_text,
 425                                 new_rdn[ a_cnt ]->la_attr.bv_val, 0 );
 426                         goto done;
 427                 }
 428
 429                 /* Apply modification */
 430                 mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );
 431                 mod_tmp->sml_desc = desc;
 432                 BER_BVZERO( &mod_tmp->sml_type );
 433                 mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 434                 ber_dupbv( &mod_tmp->sml_values[0], &new_rdn[a_cnt]->la_value );
 435                 mod_tmp->sml_values[1].bv_val = NULL;
 436                 if( desc->ad_type->sat_equality->smr_normalize) {
 437                         mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 438                         (void) (*desc->ad_type->sat_equality->smr_normalize)(
 439                                 SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 440                                 desc->ad_type->sat_syntax,
 441                                 desc->ad_type->sat_equality,
 442                                 &mod_tmp->sml_values[0],
 443                                 &mod_tmp->sml_nvalues[0], NULL );
 444                         mod_tmp->sml_nvalues[1].bv_val = NULL;
 445                 } else {
 446                         mod_tmp->sml_nvalues = NULL;
 447                 }
 448                 mod_tmp->sml_op = SLAP_MOD_SOFTADD;
 449                 mod_tmp->sml_flags = 0;
 450                 mod_tmp->sml_next = op->orr_modlist;
 451                 op->orr_modlist = mod_tmp;
 452         }
 453
 454         /* Remove old rdn value if required */
 455         if ( op->orr_deleteoldrdn ) {
 456                 for ( d_cnt = 0; old_rdn[d_cnt]; d_cnt++ ) {
 457                         AttributeDescription    *desc = NULL;
 458                         Modifications           *mod_tmp;
 459
 460                         rs->sr_err = slap_bv2ad( &old_rdn[d_cnt]->la_attr, &desc, &rs->sr_text );
 461                         if ( rs->sr_err != LDAP_SUCCESS ) {
 462                                 Debug( LDAP_DEBUG_TRACE,
 463                                         "slap_modrdn2mods: %s: %s (old)\n",
 464                                         rs->sr_text,
 465                                         old_rdn[d_cnt]->la_attr.bv_val,
 466                                         0 );
 467                                 goto done;
 468                         }
 469
 470                         /* Apply modification */
 471                         mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );
 472                         mod_tmp->sml_desc = desc;
 473                         BER_BVZERO( &mod_tmp->sml_type );
 474                         mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 475                         ber_dupbv( &mod_tmp->sml_values[0], &old_rdn[d_cnt]->la_value );
 476                         mod_tmp->sml_values[1].bv_val = NULL;
 477                         if( desc->ad_type->sat_equality->smr_normalize) {
 478                                 mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 479                                 (void) (*desc->ad_type->sat_equality->smr_normalize)(
 480                                         SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 481                                         desc->ad_type->sat_syntax,
 482                                         desc->ad_type->sat_equality,
 483                                         &mod_tmp->sml_values[0],
 484                                         &mod_tmp->sml_nvalues[0], NULL );
 485                                 mod_tmp->sml_nvalues[1].bv_val = NULL;
 486                         } else {
 487                                 mod_tmp->sml_nvalues = NULL;
 488                         }
 489                         mod_tmp->sml_op = LDAP_MOD_DELETE;
 490                         mod_tmp->sml_flags = 0;
 491                         mod_tmp->sml_next = op->orr_modlist;
 492                         op->orr_modlist = mod_tmp;
 493                 }
 494         }
 495
 496 done:
 497
 498         /* LDAP v2 supporting correct attribute handling. */
 499         if ( rs->sr_err != LDAP_SUCCESS && op->orr_modlist != NULL ) {
 500                 Modifications *tmp;
 501
 502                 for ( ; op->orr_modlist != NULL; op->orr_modlist = tmp ) {
 503                         tmp = op->orr_modlist->sml_next;
 504                         ch_free( op->orr_modlist );
 505                 }
 506         }
 507
 508         if ( new_rdn != NULL ) {
 509                 ldap_rdnfree_x( new_rdn, op->o_tmpmemctx );
 510         }
 511         if ( old_rdn != NULL ) {
 512                 ldap_rdnfree_x( old_rdn, op->o_tmpmemctx );
 513         }
 514
 515         return rs->sr_err;
 516 }
 517