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 1998-2005 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         /* FIXME: temporary? */
 175         op->orr_deleteoldrdn = deloldrdn;
 176
 177         op->o_bd = frontendDB;
 178         rs->sr_err = frontendDB->be_modrdn( op, rs );
 179
 180 cleanup:
 181         slap_graduate_commit_csn( op );
 182
 183         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 184         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 185
 186         op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );
 187         op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );
 188
 189         if ( !BER_BVISNULL( &pnewSuperior ) )
 190                 op->o_tmpfree( pnewSuperior.bv_val, op->o_tmpmemctx );
 191         if ( !BER_BVISNULL( &nnewSuperior ) )
 192                 op->o_tmpfree( nnewSuperior.bv_val, op->o_tmpmemctx );
 193
 194         return rs->sr_err;
 195 }
 196
 197 int
 198 fe_op_modrdn( Operation *op, SlapReply *rs )
 199 {
 200         Backend         *newSuperior_be = NULL;
 201         int             manageDSAit;
 202         struct berval   pdn = BER_BVNULL;
 203         BackendDB *op_be;
 204
 205         if( op->o_req_ndn.bv_len == 0 ) {
 206                 Debug( LDAP_DEBUG_ANY, "do_modrdn: root dse!\n", 0, 0, 0 );
 207
 208                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 209                         "cannot rename the root DSE" );
 210                 goto cleanup;
 211
 212         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 213                 Debug( LDAP_DEBUG_ANY, "do_modrdn: subschema subentry: %s (%ld)\n",
 214                         frontendDB->be_schemandn.bv_val, (long)frontendDB->be_schemandn.bv_len, 0 );
 215
 216                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 217                         "cannot rename subschema subentry" );
 218                 goto cleanup;
 219         }
 220
 221         Statslog( LDAP_DEBUG_STATS, "%s MODRDN dn=\"%s\"\n",
 222             op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 223
 224         manageDSAit = get_manageDSAit( op );
 225
 226         /*
 227          * We could be serving multiple database backends.  Select the
 228          * appropriate one, or send a referral to our "referral server"
 229          * if we don't hold it.
 230          */
 231         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
 232         if ( op->o_bd == NULL ) {
 233                 rs->sr_ref = referral_rewrite( default_referral,
 234                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 235                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 236
 237                 if ( rs->sr_ref != NULL ) {
 238                         rs->sr_err = LDAP_REFERRAL;
 239                         op->o_bd = frontendDB;
 240                         send_ldap_result( op, rs );
 241                         op->o_bd = NULL;
 242
 243                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 244                 } else {
 245                         op->o_bd = frontendDB;
 246                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 247                                 "no global superior knowledge" );
 248                         op->o_bd = NULL;
 249                 }
 250                 goto cleanup;
 251         }
 252
 253         /* If we've got a glued backend, check the real backend */
 254         op_be = op->o_bd;
 255         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 256                 op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 257         }
 258
 259         /* check restrictions */
 260         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 261                 send_ldap_result( op, rs );
 262                 goto cleanup;
 263         }
 264
 265         /* check for referrals */
 266         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 267                 goto cleanup;
 268         }
 269
 270         /* Make sure that the entry being changed and the newSuperior are in
 271          * the same backend, otherwise we return an error.
 272          */
 273         if( op->orr_newSup ) {
 274                 newSuperior_be = select_backend( op->orr_nnewSup, 0, 0 );
 275
 276                 if ( newSuperior_be != op->o_bd ) {
 277                         /* newSuperior is in different backend */
 278                         send_ldap_error( op, rs, LDAP_AFFECTS_MULTIPLE_DSAS,
 279                                 "cannot rename between DSAs" );
 280
 281                         goto cleanup;
 282                 }
 283         }
 284
 285         /*
 286          * do the modrdn if 1 && (2 || 3)
 287          * 1) there is a modrdn function implemented in this backend;
 288          * 2) this backend is master for what it holds;
 289          * 3) it's a replica and the dn supplied is the update_ndn.
 290          */
 291         if ( op->o_bd->be_modrdn ) {
 292                 /* do the update here */
 293                 int repl_user = be_isupdate( op );
 294 #ifndef SLAPD_MULTIMASTER
 295                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 296 #endif
 297                 {
 298                         slap_callback cb = { NULL, slap_replog_cb, NULL, NULL };
 299
 300                         op->o_bd = op_be;
 301
 302 #ifdef SLAPD_MULTIMASTER
 303                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 304 #endif
 305                         {
 306                                 cb.sc_next = op->o_callback;
 307                                 op->o_callback = &cb;
 308                         }
 309                         op->o_bd->be_modrdn( op, rs );
 310
 311                         if ( op->o_bd->be_delete ) {
 312                                 struct berval   org_req_dn = BER_BVNULL;
 313                                 struct berval   org_req_ndn = BER_BVNULL;
 314                                 struct berval   org_dn = BER_BVNULL;
 315                                 struct berval   org_ndn = BER_BVNULL;
 316                                 int             org_managedsait;
 317
 318                                 org_req_dn = op->o_req_dn;
 319                                 org_req_ndn = op->o_req_ndn;
 320                                 org_dn = op->o_dn;
 321                                 org_ndn = op->o_ndn;
 322                                 org_managedsait = get_manageDSAit( op );
 323                                 op->o_dn = op->o_bd->be_rootdn;
 324                                 op->o_ndn = op->o_bd->be_rootndn;
 325                                 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 326
 327                                 while ( rs->sr_err == LDAP_SUCCESS &&
 328                                                 op->o_delete_glue_parent ) {
 329                                         op->o_delete_glue_parent = 0;
 330                                         if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 331                                                 slap_callback cb = { NULL };
 332                                                 cb.sc_response = slap_null_cb;
 333                                                 dnParent( &op->o_req_ndn, &pdn );
 334                                                 op->o_req_dn = pdn;
 335                                                 op->o_req_ndn = pdn;
 336                                                 op->o_callback = &cb;
 337                                                 op->o_bd->be_delete( op, rs );
 338                                         } else {
 339                                                 break;
 340                                         }
 341                                 }
 342                                 op->o_managedsait = org_managedsait;
 343                                 op->o_dn = org_dn;
 344                                 op->o_ndn = org_ndn;
 345                                 op->o_req_dn = org_req_dn;
 346                                 op->o_req_ndn = org_req_ndn;
 347                                 op->o_delete_glue_parent = 0;
 348                         }
 349
 350 #ifndef SLAPD_MULTIMASTER
 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 #endif
 369                 }
 370         } else {
 371                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 372                         "operation not supported within namingContext" );
 373         }
 374
 375 cleanup:;
 376         return rs->sr_err;
 377 }
 378
 379 int
 380 slap_modrdn2mods(
 381         Operation       *op,
 382         SlapReply       *rs,
 383         Entry           *e,
 384         LDAPRDN         old_rdn,
 385         LDAPRDN         new_rdn,
 386         Modifications   **pmod )
 387 {
 388         Modifications   *mod = NULL;
 389         Modifications   **modtail = &mod;
 390         int             a_cnt, d_cnt;
 391         int repl_user;
 392
 393         assert( new_rdn != NULL );
 394         assert( !op->orr_deleteoldrdn || old_rdn != NULL );
 395
 396         repl_user = be_isupdate( op );
 397
 398         /* Add new attribute values to the entry */
 399         for ( a_cnt = 0; new_rdn[a_cnt]; a_cnt++ ) {
 400                 AttributeDescription    *desc = NULL;
 401                 Modifications           *mod_tmp;
 402
 403                 rs->sr_err = slap_bv2ad( &new_rdn[a_cnt]->la_attr, &desc, &rs->sr_text );
 404
 405                 if ( rs->sr_err != LDAP_SUCCESS ) {
 406                         Debug( LDAP_DEBUG_TRACE,
 407                                 "slap_modrdn2modlist: %s: %s (new)\n",
 408                                 rs->sr_text,
 409                                 new_rdn[ a_cnt ]->la_attr.bv_val, 0 );
 410                         goto done;
 411                 }
 412
 413                 /* ACL check of newly added attrs */
 414                 if ( op->o_bd && !access_allowed( op, e, desc,
 415                         &new_rdn[a_cnt]->la_value, ACL_WADD, NULL ) ) {
 416                         Debug( LDAP_DEBUG_TRACE,
 417                                 "slap_modrdn2modlist: access to attr \"%s\" "
 418                                 "(new) not allowed\n",
 419                                 new_rdn[ a_cnt ]->la_attr.bv_val, 0, 0 );
 420                         rs->sr_text = "access to naming attributes (new) not allowed";
 421                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 422                         goto done;
 423                 }
 424
 425                 /* Apply modification */
 426                 mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications )
 427                         + 4 * sizeof( struct berval ) );
 428                 mod_tmp->sml_desc = desc;
 429                 mod_tmp->sml_values = ( BerVarray )( mod_tmp + 1 );
 430                 mod_tmp->sml_values[0] = new_rdn[a_cnt]->la_value;
 431                 mod_tmp->sml_values[1].bv_val = NULL;
 432                 if( desc->ad_type->sat_equality->smr_normalize) {
 433                         mod_tmp->sml_nvalues = &mod_tmp->sml_values[2];
 434                         (void) (*desc->ad_type->sat_equality->smr_normalize)(
 435                                 SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 436                                 desc->ad_type->sat_syntax,
 437                                 desc->ad_type->sat_equality,
 438                                 &mod_tmp->sml_values[0],
 439                                 &mod_tmp->sml_nvalues[0], NULL );
 440                         mod_tmp->sml_nvalues[1].bv_val = NULL;
 441                 } else {
 442                         mod_tmp->sml_nvalues = NULL;
 443                 }
 444                 mod_tmp->sml_op = SLAP_MOD_SOFTADD;
 445                 mod_tmp->sml_flags = SLAP_MOD_INTERNAL;
 446                 mod_tmp->sml_managing = 0;
 447                 mod_tmp->sml_next = mod;
 448                 mod = 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_modrdn2modlist: %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                         /* ACL check of old rdn attrs removal */
 468                         if ( op->o_bd && !access_allowed( op, e, desc,
 469                                 &old_rdn[d_cnt]->la_value, ACL_WDEL,
 470                                 NULL ) ) {
 471                                 Debug( LDAP_DEBUG_TRACE,
 472                                         "slap_modrdn2modlist: access "
 473                                         "to attr \"%s\" (old) not allowed\n",
 474                                         old_rdn[ d_cnt ]->la_attr.bv_val,
 475                                         0, 0 );
 476                                 rs->sr_text = "access to naming attributes (old) not allowed";
 477                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 478                                 goto done;
 479                         }
 480
 481                         /* Apply modification */
 482                         mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications )
 483                                 + 4 * sizeof ( struct berval ) );
 484                         mod_tmp->sml_desc = desc;
 485                         mod_tmp->sml_values = ( BerVarray )(mod_tmp+1);
 486                         mod_tmp->sml_values[0] = old_rdn[d_cnt]->la_value;
 487                         mod_tmp->sml_values[1].bv_val = NULL;
 488                         if( desc->ad_type->sat_equality->smr_normalize) {
 489                                 mod_tmp->sml_nvalues = &mod_tmp->sml_values[2];
 490                                 (void) (*desc->ad_type->sat_equality->smr_normalize)(
 491                                         SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 492                                         desc->ad_type->sat_syntax,
 493                                         desc->ad_type->sat_equality,
 494                                         &mod_tmp->sml_values[0],
 495                                         &mod_tmp->sml_nvalues[0], op->o_tmpmemctx );
 496                                 mod_tmp->sml_nvalues[1].bv_val = NULL;
 497                         } else {
 498                                 mod_tmp->sml_nvalues = NULL;
 499                         }
 500                         mod_tmp->sml_op = LDAP_MOD_DELETE;
 501                         mod_tmp->sml_flags = SLAP_MOD_INTERNAL;
 502                         mod_tmp->sml_managing = 0;
 503                         mod_tmp->sml_next = mod;
 504                         mod = mod_tmp;
 505                 }
 506         }
 507
 508 done:
 509
 510         if ( rs->sr_err == LDAP_SUCCESS && !repl_user ) {
 511                 char textbuf[ SLAP_TEXT_BUFLEN ];
 512                 size_t textlen = sizeof textbuf;
 513
 514                 for( modtail = &mod;
 515                         *modtail != NULL;
 516                         modtail = &(*modtail)->sml_next )
 517                 {
 518                         /* empty */
 519                 }
 520
 521                 rs->sr_err = slap_mods_opattrs( op, mod, modtail,
 522                                                 &rs->sr_text, textbuf, textlen, 1 );
 523         }
 524
 525         /* LDAP v2 supporting correct attribute handling. */
 526         if ( rs->sr_err != LDAP_SUCCESS && mod != NULL ) {
 527                 Modifications *tmp;
 528                 for ( ; mod; mod = tmp ) {
 529                         tmp = mod->sml_next;
 530                         ch_free( mod );
 531                 }
 532         }
 533
 534         *pmod = mod;
 535
 536         return rs->sr_err;
 537 }