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         struct berval   pdn = BER_BVNULL;
 218         BackendDB       *op_be, *bd = op->o_bd;
 219
 220         if( op->o_req_ndn.bv_len == 0 ) {
 221                 Debug( LDAP_DEBUG_ANY, "do_modrdn: root dse!\n", 0, 0, 0 );
 222
 223                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 224                         "cannot rename the root DSE" );
 225                 goto cleanup;
 226
 227         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 228                 Debug( LDAP_DEBUG_ANY, "do_modrdn: subschema subentry: %s (%ld)\n",
 229                         frontendDB->be_schemandn.bv_val, (long)frontendDB->be_schemandn.bv_len, 0 );
 230
 231                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 232                         "cannot rename subschema subentry" );
 233                 goto cleanup;
 234         }
 235
 236         Statslog( LDAP_DEBUG_STATS, "%s MODRDN dn=\"%s\"\n",
 237             op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 238
 239         /*
 240          * We could be serving multiple database backends.  Select the
 241          * appropriate one, or send a referral to our "referral server"
 242          * if we don't hold it.
 243          */
 244         op->o_bd = select_backend( &op->o_req_ndn, 1 );
 245         if ( op->o_bd == NULL ) {
 246                 op->o_bd = bd;
 247                 rs->sr_ref = referral_rewrite( default_referral,
 248                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 249                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 250
 251                 if ( rs->sr_ref != NULL ) {
 252                         rs->sr_err = LDAP_REFERRAL;
 253                         send_ldap_result( op, rs );
 254
 255                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 256                 } else {
 257                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 258                                 "no global superior knowledge" );
 259                 }
 260                 goto cleanup;
 261         }
 262
 263         /* If we've got a glued backend, check the real backend */
 264         op_be = op->o_bd;
 265         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 266                 op->o_bd = select_backend( &op->o_req_ndn, 0 );
 267         }
 268
 269         /* check restrictions */
 270         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 271                 send_ldap_result( op, rs );
 272                 goto cleanup;
 273         }
 274
 275         /* check for referrals */
 276         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 277                 goto cleanup;
 278         }
 279
 280         /* Make sure that the entry being changed and the newSuperior are in
 281          * the same backend, otherwise we return an error.
 282          */
 283         if( op->orr_newSup ) {
 284                 newSuperior_be = select_backend( op->orr_nnewSup, 0 );
 285
 286                 if ( newSuperior_be != op->o_bd ) {
 287                         /* newSuperior is in different backend */
 288                         send_ldap_error( op, rs, LDAP_AFFECTS_MULTIPLE_DSAS,
 289                                 "cannot rename between DSAs" );
 290
 291                         goto cleanup;
 292                 }
 293         }
 294
 295         /*
 296          * do the modrdn if 1 && (2 || 3)
 297          * 1) there is a modrdn function implemented in this backend;
 298          * 2) this backend is master for what it holds;
 299          * 3) it's a replica and the dn supplied is the update_ndn.
 300          */
 301         if ( op->o_bd->be_modrdn ) {
 302                 /* do the update here */
 303                 int repl_user = be_isupdate( op );
 304                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user )
 305                 {
 306                         op->o_bd = op_be;
 307                         op->o_bd->be_modrdn( op, rs );
 308
 309                         if ( op->o_bd->be_delete ) {
 310                                 struct berval   org_req_dn = BER_BVNULL;
 311                                 struct berval   org_req_ndn = BER_BVNULL;
 312                                 struct berval   org_dn = BER_BVNULL;
 313                                 struct berval   org_ndn = BER_BVNULL;
 314                                 int             org_managedsait;
 315
 316                                 org_req_dn = op->o_req_dn;
 317                                 org_req_ndn = op->o_req_ndn;
 318                                 org_dn = op->o_dn;
 319                                 org_ndn = op->o_ndn;
 320                                 org_managedsait = get_manageDSAit( op );
 321                                 op->o_dn = op->o_bd->be_rootdn;
 322                                 op->o_ndn = op->o_bd->be_rootndn;
 323                                 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 324
 325                                 while ( rs->sr_err == LDAP_SUCCESS &&
 326                                                 op->o_delete_glue_parent ) {
 327                                         op->o_delete_glue_parent = 0;
 328                                         if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 329                                                 slap_callback cb = { NULL };
 330                                                 cb.sc_response = slap_null_cb;
 331                                                 dnParent( &op->o_req_ndn, &pdn );
 332                                                 op->o_req_dn = pdn;
 333                                                 op->o_req_ndn = pdn;
 334                                                 op->o_callback = &cb;
 335                                                 op->o_bd->be_delete( op, rs );
 336                                         } else {
 337                                                 break;
 338                                         }
 339                                 }
 340                                 op->o_managedsait = org_managedsait;
 341                                 op->o_dn = org_dn;
 342                                 op->o_ndn = org_ndn;
 343                                 op->o_req_dn = org_req_dn;
 344                                 op->o_req_ndn = org_req_ndn;
 345                                 op->o_delete_glue_parent = 0;
 346                         }
 347
 348                 } else {
 349                         BerVarray defref = op->o_bd->be_update_refs
 350                                 ? op->o_bd->be_update_refs : default_referral;
 351
 352                         if ( defref != NULL ) {
 353                                 rs->sr_ref = referral_rewrite( defref,
 354                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 355                                 if (!rs->sr_ref) rs->sr_ref = defref;
 356
 357                                 rs->sr_err = LDAP_REFERRAL;
 358                                 send_ldap_result( op, rs );
 359
 360                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 361                         } else {
 362                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 363                                         "shadow context; no update referral" );
 364                         }
 365                 }
 366         } else {
 367                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 368                         "operation not supported within namingContext" );
 369         }
 370
 371 cleanup:;
 372         op->o_bd = bd;
 373         return rs->sr_err;
 374 }
 375
 376 int
 377 slap_modrdn2mods(
 378         Operation       *op,
 379         SlapReply       *rs )
 380 {
 381         int             a_cnt, d_cnt;
 382         LDAPRDN         old_rdn = NULL;
 383         LDAPRDN         new_rdn = NULL;
 384
 385         assert( !BER_BVISEMPTY( &op->oq_modrdn.rs_newrdn ) );
 386         assert( !op->orr_deleteoldrdn || !BER_BVISEMPTY( &op->o_req_dn ) );
 387
 388         if ( ldap_bv2rdn_x( &op->oq_modrdn.rs_newrdn, &new_rdn,
 389                 (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {
 390                 Debug( LDAP_DEBUG_TRACE,
 391                         "slap_modrdn2mods: can't figure out "
 392                         "type(s)/value(s) of newrdn\n", 0, 0, 0 );
 393                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
 394                 rs->sr_text = "unknown type(s) used in RDN";
 395                 goto done;
 396         }
 397
 398         if ( op->oq_modrdn.rs_deleteoldrdn ) {
 399                 if ( ldap_bv2rdn_x( &op->o_req_dn, &old_rdn,
 400                         (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {
 401                         Debug( LDAP_DEBUG_TRACE,
 402                                 "slap_modrdn2mods: can't figure out "
 403                                 "type(s)/value(s) of oldrdn\n", 0, 0, 0 );
 404                         rs->sr_err = LDAP_OTHER;
 405                         rs->sr_text = "cannot parse RDN from old DN";
 406                         goto done;
 407                 }
 408         }
 409         rs->sr_text = NULL;
 410
 411         /* Add new attribute values to the entry */
 412         for ( a_cnt = 0; new_rdn[a_cnt]; a_cnt++ ) {
 413                 AttributeDescription    *desc = NULL;
 414                 Modifications           *mod_tmp;
 415
 416                 rs->sr_err = slap_bv2ad( &new_rdn[a_cnt]->la_attr, &desc, &rs->sr_text );
 417
 418                 if ( rs->sr_err != LDAP_SUCCESS ) {
 419                         Debug( LDAP_DEBUG_TRACE,
 420                                 "slap_modrdn2mods: %s: %s (new)\n",
 421                                 rs->sr_text,
 422                                 new_rdn[ a_cnt ]->la_attr.bv_val, 0 );
 423                         goto done;
 424                 }
 425
 426                 /* Apply modification */
 427                 mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );
 428                 mod_tmp->sml_desc = desc;
 429                 BER_BVZERO( &mod_tmp->sml_type );
 430                 mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 431                 ber_dupbv( &mod_tmp->sml_values[0], &new_rdn[a_cnt]->la_value );
 432                 mod_tmp->sml_values[1].bv_val = NULL;
 433                 if( desc->ad_type->sat_equality->smr_normalize) {
 434                         mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 435                         (void) (*desc->ad_type->sat_equality->smr_normalize)(
 436                                 SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 437                                 desc->ad_type->sat_syntax,
 438                                 desc->ad_type->sat_equality,
 439                                 &mod_tmp->sml_values[0],
 440                                 &mod_tmp->sml_nvalues[0], NULL );
 441                         mod_tmp->sml_nvalues[1].bv_val = NULL;
 442                 } else {
 443                         mod_tmp->sml_nvalues = NULL;
 444                 }
 445                 mod_tmp->sml_op = SLAP_MOD_SOFTADD;
 446                 mod_tmp->sml_flags = 0;
 447                 mod_tmp->sml_next = op->orr_modlist;
 448                 op->orr_modlist = mod_tmp;
 449         }
 450
 451         /* Remove old rdn value if required */
 452         if ( op->orr_deleteoldrdn ) {
 453                 for ( d_cnt = 0; old_rdn[d_cnt]; d_cnt++ ) {
 454                         AttributeDescription    *desc = NULL;
 455                         Modifications           *mod_tmp;
 456
 457                         rs->sr_err = slap_bv2ad( &old_rdn[d_cnt]->la_attr, &desc, &rs->sr_text );
 458                         if ( rs->sr_err != LDAP_SUCCESS ) {
 459                                 Debug( LDAP_DEBUG_TRACE,
 460                                         "slap_modrdn2mods: %s: %s (old)\n",
 461                                         rs->sr_text,
 462                                         old_rdn[d_cnt]->la_attr.bv_val,
 463                                         0 );
 464                                 goto done;
 465                         }
 466
 467                         /* Apply modification */
 468                         mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );
 469                         mod_tmp->sml_desc = desc;
 470                         BER_BVZERO( &mod_tmp->sml_type );
 471                         mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 472                         ber_dupbv( &mod_tmp->sml_values[0], &old_rdn[d_cnt]->la_value );
 473                         mod_tmp->sml_values[1].bv_val = NULL;
 474                         if( desc->ad_type->sat_equality->smr_normalize) {
 475                                 mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
 476                                 (void) (*desc->ad_type->sat_equality->smr_normalize)(
 477                                         SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 478                                         desc->ad_type->sat_syntax,
 479                                         desc->ad_type->sat_equality,
 480                                         &mod_tmp->sml_values[0],
 481                                         &mod_tmp->sml_nvalues[0], NULL );
 482                                 mod_tmp->sml_nvalues[1].bv_val = NULL;
 483                         } else {
 484                                 mod_tmp->sml_nvalues = NULL;
 485                         }
 486                         mod_tmp->sml_op = LDAP_MOD_DELETE;
 487                         mod_tmp->sml_flags = 0;
 488                         mod_tmp->sml_next = op->orr_modlist;
 489                         op->orr_modlist = mod_tmp;
 490                 }
 491         }
 492
 493 done:
 494
 495         /* LDAP v2 supporting correct attribute handling. */
 496         if ( rs->sr_err != LDAP_SUCCESS && op->orr_modlist != NULL ) {
 497                 Modifications *tmp;
 498
 499                 for ( ; op->orr_modlist != NULL; op->orr_modlist = tmp ) {
 500                         tmp = op->orr_modlist->sml_next;
 501                         ch_free( op->orr_modlist );
 502                 }
 503         }
 504
 505         if ( new_rdn != NULL ) {
 506                 ldap_rdnfree_x( new_rdn, op->o_tmpmemctx );
 507         }
 508         if ( old_rdn != NULL ) {
 509                 ldap_rdnfree_x( old_rdn, op->o_tmpmemctx );
 510         }
 511
 512         return rs->sr_err;
 513 }
 514