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

   1 /* modrdn.c - ldbm backend modrdn routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 /*
   9  * LDAP v3 newSuperior support. Add new rdn as an attribute.
  10  * (Full support for v2 also used software/ideas contributed
  11  * by Roy Hooper rhooper@cyberus.ca, thanks to him for his
  12  * submission!.)
  13  *
  14  * Copyright 1999, Juan C. Gomez, All rights reserved.
  15  * This software is not subject to any license of Silicon Graphics
  16  * Inc. or Purdue University.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * without restriction or fee of any kind as long as this notice
  20  * is preserved.
  21  *
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/string.h>
  29 #include <ac/socket.h>
  30
  31 #include "slap.h"
  32 #include "back-ldbm.h"
  33 #include "proto-back-ldbm.h"
  34
  35 int
  36 ldbm_back_modrdn(
  37     Backend     *be,
  38     Connection  *conn,
  39     Operation   *op,
  40     const char  *dn,
  41     const char  *ndn,
  42     const char  *newrdn,
  43     int         deleteoldrdn,
  44     const char  *newSuperior
  45 )
  46 {
  47         AttributeDescription *children = slap_schema.si_ad_children;
  48         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  49         char            *p_dn = NULL, *p_ndn = NULL;
  50         char            *new_dn = NULL, *new_ndn = NULL;
  51         Entry           *e, *p = NULL;
  52         Entry           *matched;
  53         int                     rootlock = 0;
  54         int                     rc = -1;
  55         const char *text = NULL;
  56         /* Added to support LDAP v2 correctly (deleteoldrdn thing) */
  57         char            *new_rdn_val = NULL;    /* Val of new rdn */
  58         char            *new_rdn_type = NULL;   /* Type of new rdn */
  59         char            *old_rdn = NULL;        /* Old rdn's attr type & val */
  60         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  61         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  62         /* Added to support newSuperior */
  63         Entry           *np = NULL;     /* newSuperior Entry */
  64         char            *np_dn = NULL;  /* newSuperior dn */
  65         char            *np_ndn = NULL; /* newSuperior ndn */
  66         char            *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  67         /* Used to interface with ldbm_modify_internal() */
  68         struct berval   add_bv;                 /* Stores new rdn att */
  69         struct berval   *add_bvals[2];          /* Stores new rdn att */
  70         struct berval   del_bv;                 /* Stores old rdn att */
  71         struct berval   *del_bvals[2];          /* Stores old rdn att */
  72         Modifications   mod[2];                 /* Used to delete old rdn */
  73         int             manageDSAit = get_manageDSAit( op );
  74
  75         Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",
  76                (newSuperior ? newSuperior : "NULL"),
  77                0, 0 );
  78
  79         /* get entry with writer lock */
  80         if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
  81                 char* matched_dn = NULL;
  82                 struct berval** refs = NULL;
  83
  84                 if( matched != NULL ) {
  85                         matched_dn = strdup( matched->e_dn );
  86                         refs = is_entry_referral( matched )
  87                                 ? get_entry_referrals( be, conn, op, matched )
  88                                 : NULL;
  89                         cache_return_entry_r( &li->li_cache, matched );
  90                 } else {
  91                         refs = default_referral;
  92                 }
  93
  94                 send_ldap_result( conn, op, LDAP_REFERRAL,
  95                         matched_dn, NULL, refs, NULL );
  96
  97                 if ( matched != NULL ) {
  98                         ber_bvecfree( refs );
  99                         free( matched_dn );
 100                 }
 101
 102                 return( -1 );
 103         }
 104
 105 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 106         if ( ! access_allowed( be, conn, op, e,
 107                 "entry", NULL, ACL_WRITE ) )
 108         {
 109                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
 110                         0, 0 );
 111                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 112                         NULL, NULL, NULL, NULL );
 113                 goto return_results;
 114         }
 115 #endif
 116
 117         if (!manageDSAit && is_entry_referral( e ) ) {
 118                 /* parent is a referral, don't allow add */
 119                 /* parent is an alias, don't allow add */
 120                 struct berval **refs = get_entry_referrals( be,
 121                         conn, op, e );
 122
 123                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 124                     0, 0 );
 125
 126                 send_ldap_result( conn, op, LDAP_REFERRAL,
 127                     e->e_dn, NULL, refs, NULL );
 128
 129                 ber_bvecfree( refs );
 130
 131                 goto return_results;
 132         }
 133
 134         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
 135
 136                 /* Make sure parent entry exist and we can write its
 137                  * children.
 138                  */
 139
 140                 if( (p = dn2entry_w( be, p_ndn, NULL )) == NULL) {
 141                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 142                                 0, 0, 0);
 143                         send_ldap_result( conn, op, LDAP_OTHER,
 144                                 NULL, NULL, NULL, NULL );
 145                         goto return_results;
 146                 }
 147
 148                 /* check parent for "children" acl */
 149                 if ( ! access_allowed( be, conn, op, p,
 150                         children, NULL, ACL_WRITE ) )
 151                 {
 152                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 153                                 0, 0 );
 154                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 155                                 NULL, NULL, NULL, NULL );
 156                         goto return_results;
 157                 }
 158
 159                 Debug( LDAP_DEBUG_TRACE,
 160                        "ldbm_back_modrdn: wr to children of entry %s OK\n",
 161                        p_ndn, 0, 0 );
 162
 163                 p_dn = dn_parent( be, e->e_dn );
 164
 165
 166                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 167                        p_dn, 0, 0 );
 168
 169         } else {
 170                 /* no parent, modrdn entry directly under root */
 171                 if( ! be_isroot( be, op->o_ndn ) ) {
 172                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 173                                 0, 0, 0);
 174                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 175                                 NULL, NULL, NULL, NULL );
 176                         goto return_results;
 177                 }
 178
 179                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 180                 rootlock = 1;
 181
 182                 Debug( LDAP_DEBUG_TRACE,
 183                        "ldbm_back_modrdn: no parent, locked root\n",
 184                        0, 0, 0 );
 185
 186         }
 187
 188         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 189
 190         if ( newSuperior != NULL ) {
 191                 Debug( LDAP_DEBUG_TRACE,
 192                         "ldbm_back_modrdn: new parent \"%s\" requested...\n",
 193                         newSuperior, 0, 0 );
 194
 195                 np_dn = ch_strdup( newSuperior );
 196                 np_ndn = ch_strdup( np_dn );
 197                 (void) dn_normalize( np_ndn );
 198
 199                 /* newSuperior == oldParent?, if so ==> ERROR */
 200                 /* newSuperior == entry being moved?, if so ==> ERROR */
 201                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 202
 203                 if( (np = dn2entry_w( be, np_ndn, NULL )) == NULL) {
 204                         Debug( LDAP_DEBUG_TRACE,
 205                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 206                                np_ndn, 0, 0);
 207                         send_ldap_result( conn, op, LDAP_OTHER,
 208                                 NULL, NULL, NULL, NULL );
 209                         goto return_results;
 210                 }
 211
 212                 Debug( LDAP_DEBUG_TRACE,
 213                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%ld\n",
 214                        np, np->e_id, 0 );
 215
 216                 /* check newSuperior for "children" acl */
 217                 if ( !access_allowed( be, conn, op, np, children, NULL,
 218                                       ACL_WRITE ) )
 219                 {
 220                         Debug( LDAP_DEBUG_TRACE,
 221                                "ldbm_back_modrdn: no wr to newSup children\n",
 222                                0, 0, 0 );
 223                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 224                                 NULL, NULL, NULL, NULL );
 225                         goto return_results;
 226                 }
 227
 228                 if ( is_entry_alias( np ) ) {
 229                         /* entry is an alias, don't allow bind */
 230                         Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0,
 231                             0, 0 );
 232
 233                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 234                             NULL, NULL, NULL, NULL );
 235
 236                         goto return_results;
 237                 }
 238
 239                 if ( is_entry_referral( np ) ) {
 240                         /* parent is a referral, don't allow add */
 241                         /* parent is an alias, don't allow add */
 242                         Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 243                                 0, 0 );
 244
 245                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 246                             NULL, NULL, NULL, NULL );
 247
 248                         goto return_results;
 249                 }
 250
 251                 Debug( LDAP_DEBUG_TRACE,
 252                        "ldbm_back_modrdn: wr to new parent's children OK\n",
 253                        0, 0 , 0 );
 254
 255                 new_parent_dn = np_dn;
 256         }
 257
 258         /* Build target dn and make sure target entry doesn't exist already. */
 259
 260         build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
 261
 262
 263         new_ndn = ch_strdup(new_dn);
 264         (void) dn_normalize( new_ndn );
 265
 266         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 267                new_ndn, 0, 0 );
 268
 269         /* check for abandon */
 270         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 271         if ( op->o_abandon ) {
 272                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 273                 goto return_results;
 274         }
 275
 276         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 277         if (dn2id ( be, new_ndn ) != NOID) {
 278                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
 279                         NULL, NULL, NULL, NULL );
 280                 goto return_results;
 281         }
 282
 283         Debug( LDAP_DEBUG_TRACE,
 284                "ldbm_back_modrdn: new ndn=%s does not exist\n",
 285                new_ndn, 0, 0 );
 286
 287         /* Get attribute type and attribute value of our new rdn, we will
 288          * need to add that to our new entry
 289          */
 290
 291         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 292
 293                 Debug( LDAP_DEBUG_TRACE,
 294                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 295                        0, 0, 0 );
 296                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 297                         NULL, "unknown type used in RDN", NULL, NULL );
 298                 goto return_results;
 299
 300         }
 301
 302         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 303
 304                 Debug( LDAP_DEBUG_TRACE,
 305                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 306                        0, 0, 0 );
 307                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 308                         NULL, "could not parse RDN value", NULL, NULL );
 309                 goto return_results;
 310
 311         }
 312
 313         Debug( LDAP_DEBUG_TRACE,
 314                "ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
 315                new_rdn_val, new_rdn_type, 0 );
 316
 317         /* Retrieve the old rdn from the entry's dn */
 318
 319         if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
 320                 Debug( LDAP_DEBUG_TRACE,
 321                        "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
 322                        0, 0, 0 );
 323                 send_ldap_result( conn, op, LDAP_OTHER,
 324                         NULL, "could not parse old DN", NULL, NULL );
 325                 goto return_results;
 326         }
 327
 328         if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
 329                 Debug( LDAP_DEBUG_TRACE,
 330                        "ldbm_back_modrdn: can't figure out the old_rdn type\n",
 331                        0, 0, 0 );
 332                 send_ldap_result( conn, op, LDAP_OTHER,
 333                         NULL, "count parse RDN from old DN", NULL, NULL );
 334                 goto return_results;
 335         }
 336
 337         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 338             /* Not a big deal but we may say something */
 339             Debug( LDAP_DEBUG_TRACE,
 340                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
 341                    old_rdn_type, new_rdn_type, 0 );
 342         }
 343
 344                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 345                        0, 0, 0 );
 346
 347                 /* Add new attribute value to the entry.
 348                  */
 349
 350                 add_bvals[0] = &add_bv;         /* Array of bervals */
 351                 add_bvals[1] = NULL;
 352
 353                 add_bv.bv_val = new_rdn_val;
 354                 add_bv.bv_len = strlen(new_rdn_val);
 355
 356                 {
 357                         int rc;
 358
 359                         mod[0].sml_desc = NULL;
 360                         rc = slap_str2ad( new_rdn_type, &mod[0].sml_desc, &text );
 361
 362                         if( rc != LDAP_SUCCESS ) {
 363                                 Debug( LDAP_DEBUG_TRACE,
 364                                         "ldbm_back_modrdn: %s: %s (new)\n",
 365                                         text, new_rdn_type, 0 );
 366                                 send_ldap_result( conn, op, rc,
 367                                         NULL, text, NULL, NULL );
 368                                 goto return_results;
 369                         }
 370                 }
 371                 mod[0].sml_bvalues = add_bvals;
 372                 mod[0].sml_op = SLAP_MOD_SOFTADD;
 373                 mod[0].sml_next = NULL;
 374
 375                 /* Remove old rdn value if required */
 376
 377                 if (deleteoldrdn) {
 378                         /* Get value of old rdn */
 379
 380                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 381                             == NULL) {
 382
 383                                 Debug( LDAP_DEBUG_TRACE,
 384                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 385                                        0, 0, 0 );
 386                                 send_ldap_result( conn, op, LDAP_OTHER,
 387                                         NULL, "could not parse value from old RDN", NULL, NULL );
 388                                 goto return_results;
 389                         }
 390
 391                         del_bvals[0] = &del_bv;         /* Array of bervals */
 392                         del_bvals[1] = NULL;
 393
 394                         /* Remove old value of rdn as an attribute. */
 395
 396                         del_bv.bv_val = old_rdn_val;
 397                         del_bv.bv_len = strlen(old_rdn_val);
 398
 399                         {
 400                                 int rc;
 401
 402                                 mod[1].sml_desc = NULL;
 403                                 rc = slap_str2ad( old_rdn_type, &mod[1].sml_desc, &text );
 404
 405                                 if( rc != LDAP_SUCCESS ) {
 406                                         Debug( LDAP_DEBUG_TRACE,
 407                                                 "ldbm_back_modrdn: %s: %s (old)\n",
 408                                                 text, old_rdn_type, 0 );
 409                                         send_ldap_result( conn, op, rc,
 410                                                 NULL, text, NULL, NULL );
 411                                         goto return_results;
 412                                 }
 413                         }
 414                         mod[0].sml_next = &mod[1];
 415                         mod[1].sml_bvalues = del_bvals;
 416                         mod[1].sml_op = LDAP_MOD_DELETE;
 417                         mod[1].sml_next = NULL;
 418
 419                         Debug( LDAP_DEBUG_TRACE,
 420                                "ldbm_back_modrdn: removing old_rdn_val=%s\n",
 421                                old_rdn_val, 0, 0 );
 422                 }
 423
 424         /* check for abandon */
 425         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 426         if ( op->o_abandon ) {
 427                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 428                 goto return_results;
 429         }
 430         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 431
 432         /* delete old one */
 433         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 434                 send_ldap_result( conn, op, LDAP_OTHER,
 435                         NULL, "DN index delete fail", NULL, NULL );
 436                 goto return_results;
 437         }
 438
 439         (void) cache_delete_entry( &li->li_cache, e );
 440
 441         /* XXX: there is no going back! */
 442
 443         free( e->e_dn );
 444         free( e->e_ndn );
 445         e->e_dn = new_dn;
 446         e->e_ndn = new_ndn;
 447         new_dn = NULL;
 448         new_ndn = NULL;
 449
 450         /* add new one */
 451         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 452                 send_ldap_result( conn, op, LDAP_OTHER,
 453                         NULL, "DN index add failed", NULL, NULL );
 454                 goto return_results;
 455         }
 456
 457         /* modify memory copy of entry */
 458         rc = ldbm_modify_internal( be, conn, op, dn, &mod[0], e, &text );
 459
 460         if( rc != LDAP_SUCCESS ) {
 461                 if( rc != SLAPD_ABANDON ) {
 462                         send_ldap_result( conn, op, rc,
 463                                 NULL, text, NULL, NULL );
 464                 }
 465
 466             goto return_results;
 467         }
 468
 469         (void) cache_update_entry( &li->li_cache, e );
 470
 471         /* NOTE: after this you must not free new_dn or new_ndn!
 472          * They are used by cache.
 473          */
 474
 475         /* id2entry index */
 476         if ( id2entry_add( be, e ) != 0 ) {
 477                 entry_free( e );
 478                 send_ldap_result( conn, op, LDAP_OTHER,
 479                         NULL, "entry update failed", NULL, NULL );
 480                 goto return_results;
 481         }
 482
 483         send_ldap_result( conn, op, LDAP_SUCCESS,
 484                 NULL, NULL, NULL, NULL );
 485         rc = 0;
 486
 487 return_results:
 488         if( new_dn != NULL ) free( new_dn );
 489         if( new_ndn != NULL ) free( new_ndn );
 490
 491         if( p_dn != NULL ) free( p_dn );
 492         if( p_ndn != NULL ) free( p_ndn );
 493
 494         /* LDAP v2 supporting correct attribute handling. */
 495         if( new_rdn_type != NULL ) free(new_rdn_type);
 496         if( new_rdn_val != NULL ) free(new_rdn_val);
 497         if( old_rdn != NULL ) free(old_rdn);
 498         if( old_rdn_type != NULL ) free(old_rdn_type);
 499         if( old_rdn_val != NULL ) free(old_rdn_val);
 500
 501
 502         /* LDAP v3 Support */
 503         if ( np_dn != NULL ) free( np_dn );
 504         if ( np_ndn != NULL ) free( np_ndn );
 505
 506         if( np != NULL ) {
 507                 /* free new parent and writer lock */
 508                 cache_return_entry_w( &li->li_cache, np );
 509         }
 510
 511         if( p != NULL ) {
 512                 /* free parent and writer lock */
 513                 cache_return_entry_w( &li->li_cache, p );
 514         }
 515
 516         if ( rootlock ) {
 517                 /* release root writer lock */
 518                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 519         }
 520
 521         /* free entry and writer lock */
 522         cache_return_entry_w( &li->li_cache, e );
 523         return( rc );
 524 }