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         /* Added to support newSuperior */
  55         Entry           *np = NULL;     /* newSuperior Entry */
  56         char            *np_dn = NULL;  /* newSuperior dn */
  57         char            *np_ndn = NULL; /* newSuperior ndn */
  58         char            *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  59         /* Used to interface with ldbm_modify_internal() */
  60         struct berval   add_bv;                 /* Stores new rdn att */
  61         struct berval   *add_bvals[2];          /* Stores new rdn att */
  62         struct berval   del_bv;                 /* Stores old rdn att */
  63         struct berval   *del_bvals[2];          /* Stores old rdn att */
  64         LDAPModList     mod[2];                 /* Used to delete old rdn */
  65
  66
  67         Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",
  68                (newSuperior ? newSuperior : "NULL"),
  69                0, 0 );
  70
  71         /* get entry with writer lock */
  72         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  73                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  74                 if ( matched != NULL ) {
  75                         free( matched );
  76                 }
  77                 return( -1 );
  78         }
  79
  80 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  81                 /* check parent for "children" acl */
  82         if ( ! access_allowed( be, conn, op, e,
  83                 "entry", NULL, ACL_WRITE ) )
  84         {
  85                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
  86                         0, 0 );
  87                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  88                         "", "" );
  89                 goto return_results;
  90         }
  91 #endif
  92
  93         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
  94
  95                 /* Make sure parent entry exist and we can write its
  96                  * children.
  97                  */
  98
  99                 if( (p = dn2entry_w( be, p_ndn, &matched )) == NULL) {
 100                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 101                                 0, 0, 0);
 102                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 103                                 "", "");
 104                         goto return_results;
 105                 }
 106
 107                 /* check parent for "children" acl */
 108                 if ( ! access_allowed( be, conn, op, p,
 109                         "children", NULL, ACL_WRITE ) )
 110                 {
 111                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 112                                 0, 0 );
 113                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 114                                 "", "" );
 115                         goto return_results;
 116                 }
 117
 118                 Debug( LDAP_DEBUG_TRACE,
 119                        "ldbm_back_modrdn: wr to children of entry %s OK\n",
 120                        p_ndn, 0, 0 );
 121
 122                 p_dn = dn_parent( be, e->e_dn );
 123
 124
 125                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 126                        p_dn, 0, 0 );
 127
 128         } else {
 129                 /* no parent, modrdn entry directly under root */
 130                 if( ! be_isroot( be, op->o_ndn ) ) {
 131                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 132                                 0, 0, 0);
 133                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 134                                 "", "");
 135                         goto return_results;
 136                 }
 137
 138                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 139                 rootlock = 1;
 140
 141                 Debug( LDAP_DEBUG_TRACE,
 142                        "ldbm_back_modrdn: no parent, locked root\n",
 143                        0, 0, 0 );
 144
 145         }/* if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) else */
 146
 147         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 148
 149         if ( (np_dn = newSuperior) != NULL) {
 150
 151
 152                 Debug( LDAP_DEBUG_TRACE,
 153                        "ldbm_back_modrdn: new parent requested...\n",
 154                        0, 0, 0 );
 155
 156                 np_ndn = dn_normalize_case( ch_strdup( np_dn ) );
 157
 158                 /* newSuperior == oldParent?, if so ==> ERROR */
 159
 160                 /* newSuperior == entry being moved?, if so ==> ERROR */
 161
 162                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 163
 164                 if( (np = dn2entry_w( be, np_ndn, &matched )) == NULL) {
 165
 166                         Debug( LDAP_DEBUG_TRACE,
 167                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 168                                np_ndn, 0, 0);
 169                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "",
 170                                           "");
 171                         goto return_results;
 172                 }
 173
 174                 Debug( LDAP_DEBUG_TRACE,
 175                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%d\n",
 176                        np, np->e_id, 0 );
 177
 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
 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         /* 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                 /* 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                 /* Remove old rdn value if required */
 324
 325                 if (deleteoldrdn) {
 326
 327                         /* Get value of old rdn */
 328
 329                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 330                             == NULL) {
 331
 332                                 Debug( LDAP_DEBUG_TRACE,
 333                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 334                                        0, 0, 0 );
 335                                 send_ldap_result( conn, op,
 336                                                   LDAP_OPERATIONS_ERROR,
 337                                                   "", "" );
 338                                 goto return_results;
 339
 340
 341                         }
 342
 343                         del_bvals[0] = &del_bv;         /* Array of bervals */
 344                         del_bvals[1] = NULL;
 345
 346                         /* Remove old value of rdn as an attribute. */
 347
 348                         del_bv.bv_val = old_rdn_val;
 349                         del_bv.bv_len = strlen(old_rdn_val);
 350
 351                         /* No need to normalize old_rdn_type, delete_values()
 352                          * does that for us
 353                          */
 354                         mod[0].ml_next = &mod[1];
 355                         mod[1].ml_type = old_rdn_type;
 356                         mod[1].ml_bvalues = del_bvals;
 357                         mod[1].ml_op = LDAP_MOD_DELETE;
 358                         mod[1].ml_next = NULL;
 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
 367         } else {
 368
 369
 370                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DNS DN\n",
 371                        0, 0, 0 );
 372                 /* XXXV3: not sure of what to do here */
 373                 Debug( LDAP_DEBUG_TRACE,
 374                        "ldbm_back_modrdn: not fully implemented...\n",
 375                        0, 0, 0 );
 376
 377                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 378                                   NULL );
 379                 goto return_results;
 380
 381         }
 382
 383         /* modify memory copy of entry */
 384         if ( ldbm_modify_internal( be, conn, op, dn, &mod[0], e )
 385              != 0 ) {
 386
 387             goto return_results;
 388
 389         }
 390
 391         (void) cache_update_entry( &li->li_cache, e );
 392
 393         /* NOTE: after this you must not free new_dn or new_ndn!
 394          * They are used by cache.
 395          */
 396
 397         /* id2entry index */
 398         if ( id2entry_add( be, e ) != 0 ) {
 399                 entry_free( e );
 400                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 401                 goto return_results_after;
 402         }
 403
 404         send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
 405         rc = 0;
 406         goto return_results_after;
 407
 408 return_results:
 409         if( new_dn != NULL ) free( new_dn );
 410         if( new_ndn != NULL ) free( new_ndn );
 411 return_results_after:
 412         /* NOTE:
 413          * new_dn and new_ndn are not deallocated because they are used by
 414          * the cache entry.
 415          */
 416         if( p_dn != NULL ) free( p_dn );
 417         if( p_ndn != NULL ) free( p_ndn );
 418
 419         if( matched != NULL ) free( matched );
 420
 421         /* LDAP v2 supporting correct attribute handling. */
 422         if( new_rdn_type != NULL ) free(new_rdn_type);
 423         if( new_rdn_val != NULL ) free(new_rdn_val);
 424         if( old_rdn != NULL ) free(old_rdn);
 425         if( old_rdn_type != NULL ) free(old_rdn_type);
 426         if( old_rdn_val != NULL ) free(old_rdn_val);
 427
 428
 429         /* LDAP v3 Support */
 430         if ( np_dn != NULL ) free( np_dn );
 431         if ( np_ndn != NULL ) free( np_ndn );
 432
 433         if( p != NULL ) {
 434                 /* free parent and writer lock */
 435                 cache_return_entry_w( &li->li_cache, p );
 436         }
 437
 438         if ( rootlock ) {
 439                 /* release root writer lock */
 440                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 441         }
 442
 443         /* free entry and writer lock */
 444         cache_return_entry_w( &li->li_cache, e );
 445         return( rc );
 446 }