git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb2/modrdn.c

   1 /* modrdn.c - bdb2 backend modrdn routine */
   2 /* $OpenLDAP$ */
   3
   4 /*
   5  * LDAP v3 newSuperior support.
   6  *
   7  * Copyright 1999, Juan C. Gomez, All rights reserved.
   8  * This software is not subject to any license of Silicon Graphics
   9  * Inc. or Purdue University.
  10  *
  11  * Redistribution and use in source and binary forms are permitted
  12  * without restriction or fee of any kind as long as this notice
  13  * is preserved.
  14  *
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/string.h>
  22 #include <ac/socket.h>
  23
  24 #include "slap.h"
  25 #include "back-bdb2.h"
  26 #include "proto-back-bdb2.h"
  27
  28 static int
  29 bdb2i_back_modrdn_internal(
  30     BackendDB   *be,
  31     Connection  *conn,
  32     Operation   *op,
  33     char        *dn,
  34     char        *newrdn,
  35     int         deleteoldrdn,
  36     char        *newSuperior
  37 )
  38 {
  39         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  40         Entry           *matched = NULL;
  41         char            *p_dn = NULL, *p_ndn = NULL;
  42         char            *new_dn = NULL, *new_ndn = NULL;
  43         char            sep[2];
  44         Entry           *e, *p = NULL;
  45         int                     rc = -1, manageDSAit;
  46         /* Added to support LDAP v2 correctly (deleteoldrdn thing) */
  47         char            *new_rdn_val = NULL;    /* Val of new rdn */
  48         char            *new_rdn_type = NULL;   /* Type of new rdn */
  49         char            *old_rdn = NULL;        /* Old rdn's attr type & val */
  50         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  51         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  52         struct berval   add_bv;                 /* Stores new rdn att */
  53         struct berval   *add_bvals[2];          /* Stores new rdn att */
  54         struct berval   del_bv;                 /* Stores old rdn att */
  55         struct berval   *del_bvals[2];          /* Stores old rdn att */
  56         LDAPModList     mod[2];                 /* Used to delete old rdn */
  57         /* Added to support newSuperior */
  58         Entry           *np = NULL;     /* newSuperior Entry */
  59         char            *np_dn = NULL;  /* newSuperior dn */
  60         char            *np_ndn = NULL; /* newSuperior ndn */
  61         char            *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  62
  63         Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",
  64                (newSuperior ? newSuperior : "NULL"),
  65                0, 0 );
  66
  67         /* get entry with writer lock */
  68         if ( (e = bdb2i_dn2entry_w( be, dn, &matched )) == NULL ) {
  69                 char *matched_dn = NULL;
  70                 struct berval **refs = NULL;
  71
  72                 if ( matched != NULL ) {
  73                         matched_dn = ch_strdup( matched->e_dn );
  74                         refs = is_entry_referral( matched )
  75                                 ? get_entry_referrals( be, conn, op, matched )
  76                                 : NULL;
  77                         bdb2i_cache_return_entry_r( &li->li_cache, matched );
  78                 } else {
  79                         refs = default_referral;
  80                 }
  81
  82                 send_ldap_result( conn, op, LDAP_REFERRAL,
  83                         matched_dn, NULL, refs, NULL );
  84
  85                 if( matched != NULL ) {
  86                         ber_bvecfree( refs );
  87                         free( matched_dn );
  88                 }
  89
  90                 return( -1 );
  91         }
  92
  93         if (!manageDSAit && is_entry_referral( e ) ) {
  94                 /* entry is a referral, don't allow add */
  95                 struct berval **refs = get_entry_referrals( be,
  96                         conn, op, e );
  97
  98                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  99                         0, 0 );
 100
 101                 send_ldap_result( conn, op, LDAP_REFERRAL,
 102                         e->e_dn, NULL, refs, NULL );
 103
 104                 ber_bvecfree( refs );
 105
 106                 goto return_results;
 107         }
 108
 109 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 110                 /* check parent for "children" acl */
 111         if ( ! access_allowed( be, conn, op, e,
 112                 "entry", NULL, ACL_WRITE ) )
 113         {
 114                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
 115                         0, 0 );
 116                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 117                         NULL, NULL, NULL, NULL );
 118                 goto return_results;
 119         }
 120 #endif
 121
 122         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
 123                 /* parent + rdn + separator(s) + null */
 124                 if( (p = bdb2i_dn2entry_w( be, p_ndn, &matched )) == NULL) {
 125                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 126                                 0, 0, 0);
 127                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 128                                 NULL, NULL, NULL, NULL );
 129                         goto return_results;
 130                 }
 131
 132                 /* check parent for "children" acl */
 133                 if ( ! access_allowed( be, conn, op, p,
 134                         "children", NULL, ACL_WRITE ) )
 135                 {
 136                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 137                                 0, 0 );
 138                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 139                                 NULL, NULL, NULL, NULL );
 140                         goto return_results;
 141                 }
 142
 143                 p_dn = dn_parent( be, e->e_dn );
 144
 145                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 146                        p_dn, 0, 0 );
 147
 148
 149         } else {
 150                 /* no parent, modrdn entry directly under root */
 151                 if( ! be_isroot( be, op->o_ndn ) ) {
 152                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 153                                 0, 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: no parent!, working on root\n",
 161                        0, 0, 0 );
 162
 163         }
 164
 165         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 166
 167         if ( (np_dn = newSuperior) != NULL) {
 168
 169
 170                 Debug( LDAP_DEBUG_TRACE,
 171                        "ldbm_back_modrdn: new parent requested...\n",
 172                        0, 0, 0 );
 173
 174                 np_ndn = ch_strdup( np_dn );
 175                 (void) dn_normalize( np_ndn );
 176
 177                 /* newSuperior == oldParent?, if so ==> ERROR */
 178
 179                 /* newSuperior == entry being moved?, if so ==> ERROR */
 180
 181                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 182
 183                 if( (np = bdb2i_dn2entry_w( be, np_ndn, &matched )) == NULL) {
 184
 185                         Debug( LDAP_DEBUG_TRACE,
 186                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 187                                np_ndn, 0, 0);
 188                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 189                                 NULL, NULL, NULL, NULL );
 190                         goto return_results;
 191                 }
 192
 193                 Debug( LDAP_DEBUG_TRACE,
 194                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%d\n",
 195                        np, np->e_id, 0 );
 196
 197                 /* check newSuperior for "children" acl */
 198                 if ( !access_allowed( be, conn, op, np, "children", NULL,
 199                                       ACL_WRITE ) )
 200                 {
 201                         Debug( LDAP_DEBUG_TRACE,
 202                                "ldbm_back_modrdn: no wr to newSup children\n",
 203                                0, 0, 0 );
 204                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 205                                 NULL, NULL, NULL, NULL );
 206                         goto return_results;
 207                 }
 208
 209                 Debug( LDAP_DEBUG_TRACE,
 210                        "ldbm_back_modrdn: wr to new parent's children OK\n",
 211                        0, 0 , 0 );
 212
 213
 214                 new_parent_dn = np_dn;
 215
 216         }
 217
 218         /* Build target dn and make sure target entry doesn't exist already. */
 219
 220         build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
 221
 222
 223         new_ndn = ch_strdup( new_dn );
 224         (void) dn_normalize( new_ndn );
 225
 226         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 227                new_ndn, 0, 0 );
 228
 229         /* check for abandon */
 230         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 231         if ( op->o_abandon ) {
 232                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 233                 goto return_results;
 234         }
 235         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 236
 237         if ( (bdb2i_dn2id ( be, new_ndn ) ) != NOID ) {
 238                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
 239                         NULL, NULL, NULL, NULL );
 240                 goto return_results;
 241         }
 242
 243         /* Get attribute type and attribute value of our new rdn, we will
 244          * need to add that to our new entry
 245          */
 246
 247         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 248
 249                 Debug( LDAP_DEBUG_TRACE,
 250                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 251                        0, 0, 0 );
 252                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 253                         NULL, NULL, NULL, NULL );
 254                 goto return_results;
 255
 256         }
 257
 258         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 259
 260                 Debug( LDAP_DEBUG_TRACE,
 261                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 262                        0, 0, 0 );
 263                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 264                         NULL, NULL, NULL, NULL );
 265                 goto return_results;
 266
 267         }
 268
 269         Debug( LDAP_DEBUG_TRACE,
 270                "ldbm_back_modrdn: new_rdn_val=%s, new_rdn_type=%s\n",
 271                new_rdn_val, new_rdn_type, 0 );
 272
 273         /* Retrieve the old rdn from the entry's dn */
 274
 275         if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
 276
 277                 Debug( LDAP_DEBUG_TRACE,
 278                        "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
 279                        0, 0, 0 );
 280                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 281                         NULL, NULL, NULL, NULL );
 282                 goto return_results;
 283
 284         }
 285
 286         if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
 287
 288                 Debug( LDAP_DEBUG_TRACE,
 289                        "ldbm_back_modrdn: can't figure out the old_rdn type\n",
 290                        0, 0, 0 );
 291                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 292                         NULL, NULL, NULL, NULL );
 293                 goto return_results;
 294
 295         }
 296
 297         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 298
 299             /* Not a big deal but we may say something */
 300             Debug( LDAP_DEBUG_TRACE,
 301                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
 302                    old_rdn_type, new_rdn_type, 0 );
 303
 304         }
 305
 306                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 307                        0, 0, 0 );
 308
 309                 /* Add new attribute value to the entry.
 310                  */
 311
 312                 add_bvals[0] = &add_bv;         /* Array of bervals */
 313                 add_bvals[1] = NULL;
 314
 315                 add_bv.bv_val = new_rdn_val;
 316                 add_bv.bv_len = strlen(new_rdn_val);
 317
 318                 mod[0].ml_type = new_rdn_type;
 319                 mod[0].ml_bvalues = add_bvals;
 320                 mod[0].ml_op = LDAP_MOD_SOFTADD;
 321                 mod[0].ml_next = NULL;
 322
 323                 Debug( LDAP_DEBUG_TRACE,
 324                        "ldbm_back_modrdn: adding new rdn attr val =%s\n",
 325                        new_rdn_val, 0, 0 );
 326
 327                 /* Remove old rdn value if required */
 328
 329                 if (deleteoldrdn) {
 330
 331                         del_bvals[0] = &del_bv;         /* Array of bervals */
 332                         del_bvals[1] = NULL;
 333                         /* Get value of old rdn */
 334
 335                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 336                             == NULL) {
 337
 338                                 Debug( LDAP_DEBUG_TRACE,
 339                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 340                                        0, 0, 0 );
 341                                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 342                                         NULL, NULL, NULL, NULL );
 343                                 goto return_results;
 344
 345
 346                         }
 347
 348                         /* Remove old value of rdn as an attribute. */
 349
 350                         del_bv.bv_val = old_rdn_val;
 351                         del_bv.bv_len = strlen(old_rdn_val);
 352
 353                         mod[0].ml_next = &mod[1];
 354                         mod[1].ml_type = old_rdn_type;
 355                         mod[1].ml_bvalues = del_bvals;
 356                         mod[1].ml_op = LDAP_MOD_DELETE;
 357                         mod[1].ml_next = NULL;
 358
 359
 360                         Debug( LDAP_DEBUG_TRACE,
 361                                "ldbm_back_modrdn: removing old_rdn_val=%s\n",
 362                                old_rdn_val, 0, 0 );
 363
 364                 }/* if (deleteoldrdn) */
 365
 366         /* check for abandon */
 367         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 368         if ( op->o_abandon ) {
 369                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 370                 goto return_results;
 371         }
 372         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 373
 374         /* delete old one */
 375         if ( bdb2i_dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 376                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 377                         NULL, NULL, NULL, NULL );
 378                 goto return_results;
 379         }
 380
 381         (void) bdb2i_cache_delete_entry( &li->li_cache, e );
 382
 383         free( e->e_dn );
 384         free( e->e_ndn );
 385         e->e_dn = new_dn;
 386         e->e_ndn = new_ndn;
 387         new_dn = NULL;
 388         new_ndn = NULL;
 389
 390         /* add new one */
 391         if ( bdb2i_dn2id_add( be,  e->e_ndn, e->e_id ) != 0 ) {
 392                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 393                         NULL, NULL, NULL, NULL );
 394                 goto return_results;
 395         }
 396
 397         /* modify memory copy of entry */
 398         if ( bdb2i_back_modify_internal( be, conn, op, dn, &mod[0], e )
 399              != 0 ) {
 400
 401                 goto return_results;
 402
 403         }
 404
 405         (void) bdb2i_cache_update_entry( &li->li_cache, e );
 406
 407         /* NOTE: after this you must not free new_dn or new_ndn!
 408          * They are used by cache.
 409          */
 410
 411         /* id2entry index */
 412         if ( bdb2i_id2entry_add( be, e ) != 0 ) {
 413                 entry_free( e );
 414                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 415                         NULL, NULL, NULL, NULL );
 416                 goto return_results;
 417         }
 418
 419         send_ldap_result( conn, op, LDAP_SUCCESS,
 420                 NULL, NULL, NULL, NULL );
 421         rc = 0;
 422
 423 return_results:
 424         if( new_dn != NULL ) free( new_dn );
 425         if( new_ndn != NULL ) free( new_ndn );
 426
 427         /* NOTE:
 428          * new_dn and new_ndn are not deallocated because they are used by
 429          * the cache entry.
 430          */
 431         if( p_dn != NULL ) free( p_dn );
 432         if( p_ndn != NULL ) free( p_ndn );
 433
 434         /* LDAP v2 supporting correct attribute handling. */
 435         if( new_rdn_type != NULL ) free(new_rdn_type);
 436         if( new_rdn_val != NULL ) free(new_rdn_val);
 437         if( old_rdn != NULL ) free(old_rdn);
 438         if( old_rdn_type != NULL ) free(old_rdn_type);
 439         if( old_rdn_val != NULL ) free(old_rdn_val);
 440
 441         /* LDAP v3 Support */
 442         if ( np_dn != NULL ) free( np_dn );
 443         if ( np_ndn != NULL ) free( np_ndn );
 444
 445         if( p != NULL ) {
 446                 /* free parent and writer lock */
 447                 bdb2i_cache_return_entry_w( &li->li_cache, p );
 448
 449         }
 450
 451         /* free entry and writer lock */
 452         bdb2i_cache_return_entry_w( &li->li_cache, e );
 453         return( rc );
 454 }
 455
 456
 457 int
 458 bdb2_back_modrdn(
 459     BackendDB   *be,
 460     Connection  *conn,
 461     Operation   *op,
 462     char        *dn,
 463     char        *ndn,
 464     char        *newrdn,
 465     int         deleteoldrdn,
 466     char        *newSuperior
 467 )
 468 {
 469         DB_LOCK         lock;
 470         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 471         struct timeval  time1;
 472         int             ret;
 473
 474         bdb2i_start_timing( be->bd_info, &time1 );
 475
 476         if ( bdb2i_enter_backend_w( &lock ) != 0 ) {
 477                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 478                         NULL, NULL, NULL, NULL );
 479                 return( -1 );
 480
 481         }
 482
 483         ret = bdb2i_back_modrdn_internal( be, conn, op, ndn,
 484                                         newrdn, deleteoldrdn,
 485                                         newSuperior );
 486
 487         (void) bdb2i_leave_backend_w( lock );
 488         bdb2i_stop_timing( be->bd_info, time1, "MODRDN", conn, op );
 489
 490         return( ret );
 491 }
 492
 493