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

   1 /* modrdn.c - ldbm backend modrdn routine */
   2
   3 /*
   4  * LDAP v3 newSuperior support. Add new rdn as an attribute.
   5  * (Full support for v2 also used software/ideas contributed
   6  * by Roy Hooper rhooper@cyberus.ca, thanks to him for his
   7  * submission!.)
   8  *
   9  * Copyright 1999, Juan C. Gomez, All rights reserved.
  10  * This software is not subject to any license of Silicon Graphics
  11  * Inc. or Purdue University.
  12  *
  13  * Redistribution and use in source and binary forms are permitted
  14  * without restriction or fee of any kind as long as this notice
  15  * is preserved.
  16  *
  17  */
  18
  19 #include "portable.h"
  20
  21 #include <stdio.h>
  22
  23 #include <ac/string.h>
  24 #include <ac/socket.h>
  25
  26 #include "slap.h"
  27 #include "back-ldbm.h"
  28 #include "proto-back-ldbm.h"
  29
  30 int
  31 ldbm_back_modrdn(
  32     Backend     *be,
  33     Connection  *conn,
  34     Operation   *op,
  35     char        *dn,
  36     char        *newrdn,
  37     int         deleteoldrdn,
  38     char        *newSuperior
  39 )
  40 {
  41         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  42         char            *matched = NULL;
  43         char            *p_dn = NULL, *p_ndn = NULL;
  44         char            *new_dn = NULL, *new_ndn = NULL;
  45         Entry           *e, *p = NULL;
  46         int                     rootlock = 0;
  47         int                     rc = -1;
  48         /* Added to support LDAP v2 correctly (deleteoldrdn thing) */
  49         char            *new_rdn_val = NULL;    /* Val of new rdn */
  50         char            *new_rdn_type = NULL;   /* Type of new rdn */
  51         char            *old_rdn;               /* Old rdn's attr type & val */
  52         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  53         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  54         struct berval   bv;                     /* Stores new rdn att */
  55         struct berval   *bvals[2];              /* Stores new rdn att */
  56         LDAPMod         mod;                    /* 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 = dn2entry_w( be, dn, &matched )) == NULL ) {
  69                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  70                 if ( matched != NULL ) {
  71                         free( matched );
  72                 }
  73                 return( -1 );
  74         }
  75
  76 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  77                 /* check parent for "children" acl */
  78         if ( ! access_allowed( be, conn, op, e,
  79                 "entry", NULL, ACL_WRITE ) )
  80         {
  81                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
  82                         0, 0 );
  83                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  84                         "", "" );
  85                 goto return_results;
  86         }
  87 #endif
  88
  89         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
  90
  91                 /* Make sure parent entry exist and we can write its
  92                  * children.
  93                  */
  94
  95                 if( (p = dn2entry_w( be, p_ndn, &matched )) == NULL) {
  96                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
  97                                 0, 0, 0);
  98                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
  99                                 "", "");
 100                         goto return_results;
 101                 }
 102
 103 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 104                 /* check parent for "children" acl */
 105                 if ( ! access_allowed( be, conn, op, p,
 106                         "children", NULL, ACL_WRITE ) )
 107                 {
 108                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 109                                 0, 0 );
 110                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 111                                 "", "" );
 112                         goto return_results;
 113                 }
 114
 115                 Debug( LDAP_DEBUG_TRACE,
 116                        "ldbm_back_modrdn: wr to children of entry %s OK\n",
 117                        p_ndn, 0, 0 );
 118 #endif
 119
 120                 p_dn = dn_parent( be, e->e_dn );
 121
 122
 123                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 124                        p_dn, 0, 0 );
 125
 126         } else {
 127                 /* no parent, modrdn entry directly under root */
 128                 if( ! be_isroot( be, op->o_ndn ) ) {
 129                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 130                                 0, 0, 0);
 131                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 132                                 "", "");
 133                         goto return_results;
 134                 }
 135
 136                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 137                 rootlock = 1;
 138
 139                 Debug( LDAP_DEBUG_TRACE,
 140                        "ldbm_back_modrdn: no parent, locked root\n",
 141                        0, 0, 0 );
 142
 143         }/* if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) else */
 144
 145         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 146
 147         if ( (np_dn = newSuperior) != NULL) {
 148
 149
 150                 Debug( LDAP_DEBUG_TRACE,
 151                        "ldbm_back_modrdn: new parent requested...\n",
 152                        0, 0, 0 );
 153
 154                 np_ndn = dn_normalize_case( ch_strdup( np_dn ) );
 155
 156                 /* newSuperior == oldParent?, if so ==> ERROR */
 157
 158                 /* newSuperior == entry being moved?, if so ==> ERROR */
 159
 160                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 161
 162                 if( (np = dn2entry_w( be, np_ndn, &matched )) == NULL) {
 163
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 166                                np_ndn, 0, 0);
 167                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "",
 168                                           "");
 169                         goto return_results;
 170                 }
 171
 172                 Debug( LDAP_DEBUG_TRACE,
 173                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%d\n",
 174                        np, np->e_id, 0 );
 175
 176 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 177                 /* check newSuperior for "children" acl */
 178                 if ( !access_allowed( be, conn, op, np, "children", NULL,
 179                                       ACL_WRITE ) )
 180                 {
 181                         Debug( LDAP_DEBUG_TRACE,
 182                                "ldbm_back_modrdn: no wr to newSup children\n",
 183                                0, 0, 0 );
 184                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 185                                           "", "" );
 186                         goto return_results;
 187                 }
 188 #endif
 189
 190                 Debug( LDAP_DEBUG_TRACE,
 191                        "ldbm_back_modrdn: wr to new parent's children OK\n",
 192                        0, 0 , 0 );
 193
 194
 195                 new_parent_dn = np_dn;
 196
 197         }
 198
 199         /* Build target dn and make sure target entry doesn't exist already. */
 200
 201         build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
 202
 203
 204         new_ndn = dn_normalize_case( ch_strdup(new_dn) );
 205
 206         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 207                new_ndn, 0, 0 );
 208
 209         if (dn2id ( be, new_ndn ) != NOID) {
 210                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, NULL, NULL );
 211                 goto return_results;
 212         }
 213
 214         Debug( LDAP_DEBUG_TRACE,
 215                "ldbm_back_modrdn: new ndn=%s does not exist\n",
 216                new_ndn, 0, 0 );
 217
 218         /* check for abandon */
 219         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 220         if ( op->o_abandon ) {
 221                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 222                 goto return_results;
 223         }
 224         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 225
 226         /* delete old one */
 227         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 228                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 229                 goto return_results;
 230         }
 231
 232         (void) cache_delete_entry( &li->li_cache, e );
 233         free( e->e_dn );
 234         free( e->e_ndn );
 235         e->e_dn = new_dn;
 236         e->e_ndn = new_ndn;
 237
 238         /* add new one */
 239         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 240                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 241                 goto return_results;
 242         }
 243
 244
 245
 246         /* Get attribute type and attribute value of our new rdn, we will
 247          * need to add that to our new entry
 248          */
 249
 250         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 251
 252                 Debug( LDAP_DEBUG_TRACE,
 253                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 254                        0, 0, 0 );
 255                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 256                 goto return_results;
 257
 258         }
 259
 260         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 261
 262                 Debug( LDAP_DEBUG_TRACE,
 263                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 264                        0, 0, 0 );
 265                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 266                 goto return_results;
 267
 268         }
 269
 270         Debug( LDAP_DEBUG_TRACE,
 271                "ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
 272                new_rdn_val, new_rdn_type, 0 );
 273
 274         /* Retrieve the old rdn from the entry's dn */
 275
 276         if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
 277
 278                 Debug( LDAP_DEBUG_TRACE,
 279                        "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
 280                        0, 0, 0 );
 281                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 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                 goto return_results;
 293
 294         }
 295
 296         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 297
 298             /* Not a big deal but we may say something */
 299             Debug( LDAP_DEBUG_TRACE,
 300                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
 301                    old_rdn_type, new_rdn_type, 0 );
 302
 303         }
 304
 305         if ( dn_type( old_rdn ) == DN_X500 ) {
 306
 307                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 308                        0, 0, 0 );
 309
 310                 bvals[0] = &bv;         /* Array of bervals */
 311                 bvals[1] = NULL;
 312
 313
 314                 /* Remove old rdn value if required */
 315
 316                 if (deleteoldrdn) {
 317
 318                         /* Get value of old rdn */
 319
 320                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 321                             == NULL) {
 322
 323                                 Debug( LDAP_DEBUG_TRACE,
 324                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 325                                        0, 0, 0 );
 326                                 send_ldap_result( conn, op,
 327                                                   LDAP_OPERATIONS_ERROR,
 328                                                   "", "" );
 329                                 goto return_results;
 330
 331
 332                         }
 333
 334                         /* Remove old value of rdn as an attribute. */
 335
 336                         bv.bv_val = old_rdn_val;
 337                         bv.bv_len = strlen(old_rdn_val);
 338
 339                         /* No need to normalize old_rdn_type, delete_values()
 340                          * does that for us
 341                          */
 342                         mod.mod_type = old_rdn_type;
 343                         mod.mod_bvalues = bvals;
 344                         mod.mod_op = LDAP_MOD_DELETE;   /* XXX:really needed?*/
 345
 346                         /* Assembly mod structure */
 347
 348                         if ( delete_values( e, &mod, op->o_ndn )
 349                              != LDAP_SUCCESS ) {
 350
 351                                 /* Could not find old_rdn as an attribute or
 352                                  * the old value was not present. Return an
 353                                  * error.
 354                                  */
 355                                 Debug( LDAP_DEBUG_TRACE,
 356                                        "ldbm_back_modrdn: old rdn not found or att type doesn't exist\n",
 357                                        0, 0, 0);
 358                                 send_ldap_result( conn, op,
 359                                                   LDAP_OPERATIONS_ERROR,
 360                                                   "", "");
 361                                 goto return_results;
 362
 363                         }
 364
 365                         Debug( LDAP_DEBUG_TRACE,
 366                                "ldbm_back_modrdn: removed old_rdn_val=%s\n",
 367                                old_rdn_val, 0, 0 );
 368
 369                 }/* if (deleteoldrdn) */
 370
 371                 /* Add new attribute value to the entry.
 372                  */
 373
 374                 bv.bv_val = new_rdn_val;
 375                 bv.bv_len = strlen(new_rdn_val);
 376
 377
 378                 Debug( LDAP_DEBUG_TRACE,
 379                        "ldbm_back_modrdn: adding new rdn attr val =\"%s\"\n",
 380                        new_rdn_val, 0, 0 );
 381
 382                 /* No need to normalize new_rdn_type, attr_merge does it */
 383
 384                 attr_merge( e, new_rdn_type, bvals );
 385
 386                 /* Update new_rdn_type if it is an index */
 387
 388                 index_add_values( be, new_rdn_type, bvals, e->e_id );
 389
 390         } else {
 391
 392
 393                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DNS DN\n",
 394                        0, 0, 0 );
 395                 /* XXXV3: not sure of what to do here */
 396                 Debug( LDAP_DEBUG_TRACE,
 397                        "ldbm_back_modrdn: not fully implemented...\n",
 398                        0, 0, 0 );
 399
 400         }
 401
 402         (void) cache_update_entry( &li->li_cache, e );
 403
 404         /* id2entry index */
 405         if ( id2entry_add( be, e ) != 0 ) {
 406                 entry_free( e );
 407                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 408                 goto return_results;
 409         }
 410
 411         send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
 412         rc = 0;
 413
 414 return_results:
 415         /* NOTE:
 416          * new_dn and new_ndn are not deallocated because they are used by
 417          * the cache entry.
 418          */
 419         if( p_dn != NULL ) free( p_dn );
 420         if( p_ndn != NULL ) free( p_ndn );
 421
 422         if( matched != NULL ) free( matched );
 423
 424         /* LDAP v2 supporting correct attribute handling. */
 425         if( new_rdn_type != NULL ) free(new_rdn_type);
 426         if( new_rdn_val != NULL ) free(new_rdn_val);
 427         if( old_rdn != NULL ) free(old_rdn);
 428         if( old_rdn_type != NULL ) free(old_rdn_type);
 429         if( old_rdn_val != NULL ) free(old_rdn_val);
 430
 431
 432         /* LDAP v3 Support */
 433         if ( np_dn != NULL ) free( np_dn );
 434         if ( np_ndn != NULL ) free( np_ndn );
 435
 436         if( p != NULL ) {
 437                 /* free parent and writer lock */
 438                 cache_return_entry_w( &li->li_cache, p );
 439         }
 440
 441         if ( rootlock ) {
 442                 /* release root writer lock */
 443                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 444         }
 445
 446         /* free entry and writer lock */
 447         cache_return_entry_w( &li->li_cache, e );
 448         return( rc );
 449 }