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         char            sep[2];
  46         Entry           *e, *p = NULL;
  47         int                     rootlock = 0;
  48         int                     rc = -1;
  49         /* Added to support LDAP v2 correctly (deleteoldrdn thing) */
  50         char            *new_rdn_val = NULL;    /* Val of new rdn */
  51         char            *new_rdn_type = NULL;   /* Type of new rdn */
  52         char            *old_rdn;               /* Old rdn's attr type & val */
  53         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  54         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  55         struct berval   bv;                     /* Stores new rdn att */
  56         struct berval   *bvals[2];              /* Stores new rdn att */
  57         LDAPMod         mod;                    /* Used to delete old rdn */
  58         /* Added to support newSuperior */
  59         Entry           *np = NULL;     /* newSuperior Entry */
  60         char            *np_dn = NULL;  /* newSuperior dn */
  61         char            *np_ndn = NULL; /* newSuperior ndn */
  62         char            *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  63
  64         Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",\
  65                (newSuperior ? newSuperior : "NULL"),\
  66                0, 0 );
  67
  68         /* get entry with writer lock */
  69         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  70                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  71                 if ( matched != NULL ) {
  72                         free( matched );
  73                 }
  74                 return( -1 );
  75         }
  76
  77 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  78                 /* check parent for "children" acl */
  79         if ( ! access_allowed( be, conn, op, e,
  80                 "entry", NULL, ACL_WRITE ) )
  81         {
  82                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
  83                         0, 0 );
  84                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  85                         "", "" );
  86                 goto return_results;
  87         }
  88 #endif
  89
  90         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
  91
  92                 /* Make sure parent entry exist and we can write its
  93                  * children.
  94                  */
  95
  96                 if( (p = dn2entry_w( be, p_ndn, &matched )) == NULL) {
  97                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
  98                                 0, 0, 0);
  99                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 100                                 "", "");
 101                         goto return_results;
 102                 }
 103
 104 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 105                 /* check parent for "children" acl */
 106                 if ( ! access_allowed( be, conn, op, p,
 107                         "children", NULL, ACL_WRITE ) )
 108                 {
 109                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 110                                 0, 0 );
 111                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 112                                 "", "" );
 113                         goto return_results;
 114                 }
 115
 116                 Debug( LDAP_DEBUG_TRACE,
 117                        "ldbm_back_modrdn: wr to children of entry %s OK\n",
 118                        p_ndn, 0, 0 );
 119 #endif
 120
 121                 p_dn = dn_parent( be, e->e_dn );
 122
 123
 124                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 125                        p_dn, 0, 0 );
 126
 127         } else {
 128                 /* no parent, modrdn entry directly under root */
 129                 if( ! be_isroot( be, op->o_ndn ) ) {
 130                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 131                                 0, 0, 0);
 132                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 133                                 "", "");
 134                         goto return_results;
 135                 }
 136
 137                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 138                 rootlock = 1;
 139
 140                 Debug( LDAP_DEBUG_TRACE,
 141                        "ldbm_back_modrdn: no parent, locked root\n",
 142                        0, 0, 0 );
 143
 144         }/* if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) else */
 145
 146         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 147
 148         if ( (np_dn = newSuperior) != NULL) {
 149
 150
 151                 Debug( LDAP_DEBUG_TRACE,
 152                        "ldbm_back_modrdn: new parent requested...\n",
 153                        0, 0, 0 );
 154
 155                 np_ndn = dn_normalize_case( ch_strdup( np_dn ) );
 156
 157                 /* newSuperior == oldParent?, if so ==> ERROR */
 158
 159                 /* newSuperior == entry being moved?, if so ==> ERROR */
 160
 161                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 162
 163                 if( (np = dn2entry_w( be, np_ndn, &matched )) == NULL) {
 164
 165                         Debug( LDAP_DEBUG_TRACE,
 166                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 167                                np_ndn, 0, 0);
 168                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "",
 169                                           "");
 170                         goto return_results;
 171                 }
 172
 173                 Debug( LDAP_DEBUG_TRACE,
 174                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%d\n",
 175                        np, np->e_id, 0 );
 176
 177 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 178                 /* check newSuperior for "children" acl */
 179                 if ( !access_allowed( be, conn, op, np, "children", NULL,
 180                                       ACL_WRITE ) )
 181                 {
 182                         Debug( LDAP_DEBUG_TRACE,
 183                                "ldbm_back_modrdn: no wr to newSup children\n",
 184                                0, 0, 0 );
 185                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 186                                           "", "" );
 187                         goto return_results;
 188                 }
 189 #endif
 190
 191                 Debug( LDAP_DEBUG_TRACE,
 192                        "ldbm_back_modrdn: wr to new parent's children OK\n",
 193                        0, 0 , 0 );
 194
 195
 196                 new_parent_dn = np_dn;
 197
 198         }
 199
 200         /* Build target dn and make sure target entry doesn't exist already. */
 201
 202         build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
 203
 204
 205         new_ndn = dn_normalize_case( ch_strdup(new_dn) );
 206
 207         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 208                new_ndn, 0, 0 );
 209
 210         if (dn2id ( be, new_ndn ) != NOID) {
 211                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, NULL, NULL );
 212                 goto return_results;
 213         }
 214
 215         Debug( LDAP_DEBUG_TRACE,
 216                "ldbm_back_modrdn: new ndn=%s does not exist\n",
 217                new_ndn, 0, 0 );
 218
 219         /* check for abandon */
 220         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 221         if ( op->o_abandon ) {
 222                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 223                 goto return_results;
 224         }
 225         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 226
 227         /* add new one */
 228         if ( dn2id_add( be, new_ndn, e->e_id ) != 0 ) {
 229                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 230                 goto return_results;
 231         }
 232
 233         /* delete old one */
 234         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 235                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 236                 goto return_results;
 237         }
 238
 239         (void) cache_delete_entry( &li->li_cache, e );
 240         free( e->e_dn );
 241         free( e->e_ndn );
 242         e->e_dn = new_dn;
 243         e->e_ndn = new_ndn;
 244
 245         /* Get attribute type and attribute value of our new rdn, we will
 246          * need to add that to our new entry
 247          */
 248
 249         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 250
 251                 Debug( LDAP_DEBUG_TRACE,
 252                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 253                        0, 0, 0 );
 254                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 255                 goto return_results;
 256
 257         }
 258
 259         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 260
 261                 Debug( LDAP_DEBUG_TRACE,
 262                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 263                        0, 0, 0 );
 264                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 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                 goto return_results;
 282
 283         }
 284
 285         if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
 286
 287                 Debug( LDAP_DEBUG_TRACE,
 288                        "ldbm_back_modrdn: can't figure out the old_rdn type\n",
 289                        0, 0, 0 );
 290                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 291                 goto return_results;
 292
 293         }
 294
 295         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 296
 297             /* Not a big deal but we may say something */
 298             Debug( LDAP_DEBUG_TRACE,\
 299                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",\
 300                    old_rdn_type, new_rdn_type, 0 );
 301
 302         }
 303
 304         if ( dn_type( old_rdn ) == DN_X500 ) {
 305
 306                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 307                        0, 0, 0 );
 308
 309                 bvals[0] = &bv;         /* Array of bervals */
 310                 bvals[1] = NULL;
 311
 312                 /* Remove old rdn value if required */
 313
 314                 if (deleteoldrdn) {
 315
 316                         /* Get value of old rdn */
 317
 318                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 319                             == NULL) {
 320
 321                                 Debug( LDAP_DEBUG_TRACE,
 322                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 323                                        0, 0, 0 );
 324                                 send_ldap_result( conn, op,
 325                                                   LDAP_OPERATIONS_ERROR,
 326                                                   "", "" );
 327                                 goto return_results;
 328
 329
 330                         }
 331
 332                         /* Remove old value of rdn as an attribute. */
 333
 334                         bv.bv_val = old_rdn_val;
 335                         bv.bv_len = strlen(old_rdn_val);
 336
 337                         /* No need to normalize old_rdn_type, delete_values()
 338                          * does that for us
 339                          */
 340                         mod.mod_type = old_rdn_type;
 341                         mod.mod_bvalues = bvals;
 342                         mod.mod_op = LDAP_MOD_DELETE;   /* XXX:really needed?*/
 343
 344                         /* Assembly mod structure */
 345
 346                         if ( delete_values( e, &mod, op->o_ndn )
 347                              != LDAP_SUCCESS ) {
 348
 349                                 /* Could not find old_rdn as an attribute or
 350                                  * the old value was not present. Return an
 351                                  * error.
 352                                  */
 353                                 Debug( LDAP_DEBUG_TRACE,
 354                                        "ldbm_back_modrdn: old rdn not found or att type doesn't exist\n",
 355                                        0, 0, 0);
 356                                 send_ldap_result( conn, op,
 357                                                   LDAP_OPERATIONS_ERROR,
 358                                                   "", "");
 359                                 goto return_results;
 360
 361                         }
 362
 363                         Debug( LDAP_DEBUG_TRACE,\
 364                                "ldbm_back_modrdn: removed old_rdn_val=%s\n",\
 365                                old_rdn_val, 0, 0 );
 366
 367                 }/* if (deleteoldrdn) */
 368
 369                 /* Add new attribute value to the entry.
 370                  */
 371
 372                 bv.bv_val = new_rdn_val;
 373                 bv.bv_len = strlen(new_rdn_val);
 374
 375
 376                 Debug( LDAP_DEBUG_TRACE,
 377                        "ldbm_back_modrdn: adding new rdn attr val =%s\n",
 378                        new_rdn_val, 0, 0 );
 379
 380                 /* No need to normalize new_rdn_type, attr_merge does it */
 381
 382                 attr_merge( e, new_rdn_type, bvals );
 383
 384         } else {
 385
 386
 387                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DNS DN\n",
 388                        0, 0, 0 );
 389                 /* XXXV3: not sure of what to do here */
 390                 Debug( LDAP_DEBUG_TRACE,\
 391                        "ldbm_back_modrdn: not fully implemented...\n",
 392                        0, 0, 0 );
 393
 394         }
 395
 396         (void) cache_update_entry( &li->li_cache, e );
 397
 398         /* id2entry index */
 399         if ( id2entry_add( be, e ) != 0 ) {
 400                 entry_free( e );
 401                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 402                 goto return_results;
 403         }
 404
 405         send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
 406         rc = 0;
 407
 408 return_results:
 409         /* NOTE:
 410          * new_dn and new_ndn are not deallocated because they are used by
 411          * the cache entry.
 412          */
 413         if( p_dn != NULL ) free( p_dn );
 414         if( p_ndn != NULL ) free( p_ndn );
 415
 416         if( matched != NULL ) free( matched );
 417
 418         /* LDAP v2 supporting correct attribute handling. */
 419         if( new_rdn_type != NULL ) free(new_rdn_type);
 420         if( new_rdn_val != NULL ) free(new_rdn_val);
 421         if( old_rdn != NULL ) free(old_rdn);
 422         if( old_rdn_type != NULL ) free(old_rdn_type);
 423         if( old_rdn_val != NULL ) free(old_rdn_val);
 424
 425
 426         /* LDAP v3 Support */
 427         if ( np_dn != NULL ) free( np_dn );
 428         if ( np_ndn != NULL ) free( np_ndn );
 429
 430         if( p != NULL ) {
 431                 /* free parent and writer lock */
 432                 cache_return_entry_w( &li->li_cache, p );
 433         }
 434
 435         if ( rootlock ) {
 436                 /* release root writer lock */
 437                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 438         }
 439
 440         /* free entry and writer lock */
 441         cache_return_entry_w( &li->li_cache, e );
 442         return( rc );
 443 }