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 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  48         AttributeDescription *children = slap_schema.si_ad_children;
  49 #else
  50         static const char *children = "children";
  51 #endif
  52         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  53         char            *p_dn = NULL, *p_ndn = NULL;
  54         char            *new_dn = NULL, *new_ndn = NULL;
  55         Entry           *e, *p = NULL;
  56         Entry           *matched;
  57         int                     rootlock = 0;
  58         int                     rc = -1;
  59         const char *text;
  60         /* Added to support LDAP v2 correctly (deleteoldrdn thing) */
  61         char            *new_rdn_val = NULL;    /* Val of new rdn */
  62         char            *new_rdn_type = NULL;   /* Type of new rdn */
  63         char            *old_rdn = NULL;        /* Old rdn's attr type & val */
  64         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  65         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  66         /* Added to support newSuperior */
  67         Entry           *np = NULL;     /* newSuperior Entry */
  68         char            *np_dn = NULL;  /* newSuperior dn */
  69         char            *np_ndn = NULL; /* newSuperior ndn */
  70         char            *new_parent_dn = NULL;  /* np_dn, p_dn, or NULL */
  71         /* Used to interface with ldbm_modify_internal() */
  72         struct berval   add_bv;                 /* Stores new rdn att */
  73         struct berval   *add_bvals[2];          /* Stores new rdn att */
  74         struct berval   del_bv;                 /* Stores old rdn att */
  75         struct berval   *del_bvals[2];          /* Stores old rdn att */
  76         Modifications   mod[2];                 /* Used to delete old rdn */
  77         int             manageDSAit = get_manageDSAit( op );
  78
  79         Debug( LDAP_DEBUG_TRACE, "==>ldbm_back_modrdn(newSuperior=%s)\n",
  80                (newSuperior ? newSuperior : "NULL"),
  81                0, 0 );
  82
  83         /* get entry with writer lock */
  84         if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
  85                 char* matched_dn = NULL;
  86                 struct berval** refs = NULL;
  87
  88                 if( matched != NULL ) {
  89                         matched_dn = strdup( matched->e_dn );
  90                         refs = is_entry_referral( matched )
  91                                 ? get_entry_referrals( be, conn, op, matched )
  92                                 : NULL;
  93                         cache_return_entry_r( &li->li_cache, matched );
  94                 } else {
  95                         refs = default_referral;
  96                 }
  97
  98                 send_ldap_result( conn, op, LDAP_REFERRAL,
  99                         matched_dn, NULL, refs, NULL );
 100
 101                 if ( matched != NULL ) {
 102                         ber_bvecfree( refs );
 103                         free( matched_dn );
 104                 }
 105
 106                 return( -1 );
 107         }
 108
 109 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 110         if ( ! access_allowed( be, conn, op, e,
 111                 "entry", NULL, ACL_WRITE ) )
 112         {
 113                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
 114                         0, 0 );
 115                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 116                         NULL, NULL, NULL, NULL );
 117                 goto return_results;
 118         }
 119 #endif
 120
 121         if (!manageDSAit && is_entry_referral( e ) ) {
 122                 /* parent is a referral, don't allow add */
 123                 /* parent is an alias, don't allow add */
 124                 struct berval **refs = get_entry_referrals( be,
 125                         conn, op, e );
 126
 127                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 128                     0, 0 );
 129
 130                 send_ldap_result( conn, op, LDAP_REFERRAL,
 131                     e->e_dn, NULL, refs, NULL );
 132
 133                 ber_bvecfree( refs );
 134
 135                 goto return_results;
 136         }
 137
 138         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
 139
 140                 /* Make sure parent entry exist and we can write its
 141                  * children.
 142                  */
 143
 144                 if( (p = dn2entry_w( be, p_ndn, NULL )) == NULL) {
 145                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 146                                 0, 0, 0);
 147                         send_ldap_result( conn, op, LDAP_OTHER,
 148                                 NULL, NULL, NULL, NULL );
 149                         goto return_results;
 150                 }
 151
 152                 /* check parent for "children" acl */
 153                 if ( ! access_allowed( be, conn, op, p,
 154                         children, NULL, ACL_WRITE ) )
 155                 {
 156                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
 157                                 0, 0 );
 158                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 159                                 NULL, NULL, NULL, NULL );
 160                         goto return_results;
 161                 }
 162
 163                 Debug( LDAP_DEBUG_TRACE,
 164                        "ldbm_back_modrdn: wr to children of entry %s OK\n",
 165                        p_ndn, 0, 0 );
 166
 167                 p_dn = dn_parent( be, e->e_dn );
 168
 169
 170                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: parent dn=%s\n",
 171                        p_dn, 0, 0 );
 172
 173         } else {
 174                 /* no parent, modrdn entry directly under root */
 175                 if( ! be_isroot( be, op->o_ndn ) ) {
 176                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 177                                 0, 0, 0);
 178                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 179                                 NULL, NULL, NULL, NULL );
 180                         goto return_results;
 181                 }
 182
 183                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 184                 rootlock = 1;
 185
 186                 Debug( LDAP_DEBUG_TRACE,
 187                        "ldbm_back_modrdn: no parent, locked root\n",
 188                        0, 0, 0 );
 189
 190         }
 191
 192         new_parent_dn = p_dn;   /* New Parent unless newSuperior given */
 193
 194         if ( newSuperior != NULL ) {
 195                 Debug( LDAP_DEBUG_TRACE,
 196                         "ldbm_back_modrdn: new parent \"%s\" requested...\n",
 197                         newSuperior, 0, 0 );
 198
 199                 np_dn = ch_strdup( newSuperior );
 200                 np_ndn = ch_strdup( np_dn );
 201                 (void) dn_normalize( np_ndn );
 202
 203                 /* newSuperior == oldParent?, if so ==> ERROR */
 204                 /* newSuperior == entry being moved?, if so ==> ERROR */
 205                 /* Get Entry with dn=newSuperior. Does newSuperior exist? */
 206
 207                 if( (np = dn2entry_w( be, np_ndn, NULL )) == NULL) {
 208                         Debug( LDAP_DEBUG_TRACE,
 209                                "ldbm_back_modrdn: newSup(ndn=%s) not here!\n",
 210                                np_ndn, 0, 0);
 211                         send_ldap_result( conn, op, LDAP_OTHER,
 212                                 NULL, NULL, NULL, NULL );
 213                         goto return_results;
 214                 }
 215
 216                 Debug( LDAP_DEBUG_TRACE,
 217                        "ldbm_back_modrdn: wr to new parent OK np=%p, id=%ld\n",
 218                        np, np->e_id, 0 );
 219
 220                 /* check newSuperior for "children" acl */
 221                 if ( !access_allowed( be, conn, op, np, children, NULL,
 222                                       ACL_WRITE ) )
 223                 {
 224                         Debug( LDAP_DEBUG_TRACE,
 225                                "ldbm_back_modrdn: no wr to newSup children\n",
 226                                0, 0, 0 );
 227                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 228                                 NULL, NULL, NULL, NULL );
 229                         goto return_results;
 230                 }
 231
 232                 if ( is_entry_alias( np ) ) {
 233                         /* entry is an alias, don't allow bind */
 234                         Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0,
 235                             0, 0 );
 236
 237                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 238                             NULL, NULL, NULL, NULL );
 239
 240                         goto return_results;
 241                 }
 242
 243                 if ( is_entry_referral( np ) ) {
 244                         /* parent is a referral, don't allow add */
 245                         /* parent is an alias, don't allow add */
 246                         Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 247                                 0, 0 );
 248
 249                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 250                             NULL, NULL, NULL, NULL );
 251
 252                         goto return_results;
 253                 }
 254
 255                 Debug( LDAP_DEBUG_TRACE,
 256                        "ldbm_back_modrdn: wr to new parent's children OK\n",
 257                        0, 0 , 0 );
 258
 259                 new_parent_dn = np_dn;
 260         }
 261
 262         /* Build target dn and make sure target entry doesn't exist already. */
 263
 264         build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn );
 265
 266
 267         new_ndn = ch_strdup(new_dn);
 268         (void) dn_normalize( new_ndn );
 269
 270         Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
 271                new_ndn, 0, 0 );
 272
 273         /* check for abandon */
 274         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 275         if ( op->o_abandon ) {
 276                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 277                 goto return_results;
 278         }
 279
 280         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 281         if (dn2id ( be, new_ndn ) != NOID) {
 282                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
 283                         NULL, NULL, NULL, NULL );
 284                 goto return_results;
 285         }
 286
 287         Debug( LDAP_DEBUG_TRACE,
 288                "ldbm_back_modrdn: new ndn=%s does not exist\n",
 289                new_ndn, 0, 0 );
 290
 291         /* Get attribute type and attribute value of our new rdn, we will
 292          * need to add that to our new entry
 293          */
 294
 295         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 296
 297                 Debug( LDAP_DEBUG_TRACE,
 298                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 299                        0, 0, 0 );
 300                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 301                         NULL, "unknown type used in RDN", NULL, NULL );
 302                 goto return_results;
 303
 304         }
 305
 306         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 307
 308                 Debug( LDAP_DEBUG_TRACE,
 309                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 310                        0, 0, 0 );
 311                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 312                         NULL, "could not parse RDN value", NULL, NULL );
 313                 goto return_results;
 314
 315         }
 316
 317         Debug( LDAP_DEBUG_TRACE,
 318                "ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
 319                new_rdn_val, new_rdn_type, 0 );
 320
 321         /* Retrieve the old rdn from the entry's dn */
 322
 323         if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
 324                 Debug( LDAP_DEBUG_TRACE,
 325                        "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
 326                        0, 0, 0 );
 327                 send_ldap_result( conn, op, LDAP_OTHER,
 328                         NULL, "could not parse old DN", NULL, NULL );
 329                 goto return_results;
 330         }
 331
 332         if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
 333                 Debug( LDAP_DEBUG_TRACE,
 334                        "ldbm_back_modrdn: can't figure out the old_rdn type\n",
 335                        0, 0, 0 );
 336                 send_ldap_result( conn, op, LDAP_OTHER,
 337                         NULL, "count parse RDN from old DN", NULL, NULL );
 338                 goto return_results;
 339         }
 340
 341         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 342             /* Not a big deal but we may say something */
 343             Debug( LDAP_DEBUG_TRACE,
 344                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
 345                    old_rdn_type, new_rdn_type, 0 );
 346         }
 347
 348                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 349                        0, 0, 0 );
 350
 351                 /* Add new attribute value to the entry.
 352                  */
 353
 354                 add_bvals[0] = &add_bv;         /* Array of bervals */
 355                 add_bvals[1] = NULL;
 356
 357                 add_bv.bv_val = new_rdn_val;
 358                 add_bv.bv_len = strlen(new_rdn_val);
 359
 360 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 361                 {
 362                         int rc;
 363
 364                         mod[0].sml_desc = NULL;
 365                         rc = slap_str2ad( new_rdn_type, &mod[0].sml_desc, &text );
 366
 367                         if( rc != LDAP_SUCCESS ) {
 368                                 Debug( LDAP_DEBUG_TRACE,
 369                                         "ldbm_back_modrdn: %s: %s (new)\n",
 370                                         text, new_rdn_type, 0 );
 371                                 send_ldap_result( conn, op, rc,
 372                                         NULL, text, NULL, NULL );
 373                                 goto return_results;
 374                         }
 375                 }
 376 #else
 377                 mod[0].sml_type = new_rdn_type;
 378 #endif
 379                 mod[0].sml_bvalues = add_bvals;
 380                 mod[0].sml_op = SLAP_MOD_SOFTADD;
 381                 mod[0].sml_next = NULL;
 382
 383                 /* Remove old rdn value if required */
 384
 385                 if (deleteoldrdn) {
 386                         /* Get value of old rdn */
 387
 388                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 389                             == NULL) {
 390
 391                                 Debug( LDAP_DEBUG_TRACE,
 392                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 393                                        0, 0, 0 );
 394                                 send_ldap_result( conn, op, LDAP_OTHER,
 395                                         NULL, "could not parse value from old RDN", NULL, NULL );
 396                                 goto return_results;
 397                         }
 398
 399                         del_bvals[0] = &del_bv;         /* Array of bervals */
 400                         del_bvals[1] = NULL;
 401
 402                         /* Remove old value of rdn as an attribute. */
 403
 404                         del_bv.bv_val = old_rdn_val;
 405                         del_bv.bv_len = strlen(old_rdn_val);
 406
 407 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 408                         {
 409                                 int rc;
 410
 411                                 mod[1].sml_desc = NULL;
 412                                 rc = slap_str2ad( old_rdn_type, &mod[1].sml_desc, &text );
 413
 414                                 if( rc != LDAP_SUCCESS ) {
 415                                         Debug( LDAP_DEBUG_TRACE,
 416                                                 "ldbm_back_modrdn: %s: %s (old)\n",
 417                                                 text, old_rdn_type, 0 );
 418                                         send_ldap_result( conn, op, rc,
 419                                                 NULL, text, NULL, NULL );
 420                                         goto return_results;
 421                                 }
 422                         }
 423 #else
 424                         mod[1].sml_type = old_rdn_type;
 425 #endif
 426                         mod[0].sml_next = &mod[1];
 427                         mod[1].sml_bvalues = del_bvals;
 428                         mod[1].sml_op = LDAP_MOD_DELETE;
 429                         mod[1].sml_next = NULL;
 430
 431                         Debug( LDAP_DEBUG_TRACE,
 432                                "ldbm_back_modrdn: removing old_rdn_val=%s\n",
 433                                old_rdn_val, 0, 0 );
 434                 }
 435
 436         /* check for abandon */
 437         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 438         if ( op->o_abandon ) {
 439                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 440                 goto return_results;
 441         }
 442         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 443
 444         /* delete old one */
 445         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 446                 send_ldap_result( conn, op, LDAP_OTHER,
 447                         NULL, "DN index delete fail", NULL, NULL );
 448                 goto return_results;
 449         }
 450
 451         (void) cache_delete_entry( &li->li_cache, e );
 452
 453         /* XXX: there is no going back! */
 454
 455         free( e->e_dn );
 456         free( e->e_ndn );
 457         e->e_dn = new_dn;
 458         e->e_ndn = new_ndn;
 459         new_dn = NULL;
 460         new_ndn = NULL;
 461
 462         /* add new one */
 463         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 464                 send_ldap_result( conn, op, LDAP_OTHER,
 465                         NULL, "DN index add failed", NULL, NULL );
 466                 goto return_results;
 467         }
 468
 469         /* modify memory copy of entry */
 470         rc = ldbm_modify_internal( be, conn, op, dn, &mod[0], e, &text );
 471
 472         if( rc != LDAP_SUCCESS ) {
 473                 if( rc != SLAPD_ABANDON ) {
 474                         send_ldap_result( conn, op, rc,
 475                                 NULL, text, NULL, NULL );
 476                 }
 477
 478             goto return_results;
 479         }
 480
 481         (void) cache_update_entry( &li->li_cache, e );
 482
 483         /* NOTE: after this you must not free new_dn or new_ndn!
 484          * They are used by cache.
 485          */
 486
 487         /* id2entry index */
 488         if ( id2entry_add( be, e ) != 0 ) {
 489                 entry_free( e );
 490                 send_ldap_result( conn, op, LDAP_OTHER,
 491                         NULL, "entry update failed", NULL, NULL );
 492                 goto return_results;
 493         }
 494
 495         send_ldap_result( conn, op, LDAP_SUCCESS,
 496                 NULL, NULL, NULL, NULL );
 497         rc = 0;
 498
 499 return_results:
 500         if( new_dn != NULL ) free( new_dn );
 501         if( new_ndn != NULL ) free( new_ndn );
 502
 503         if( p_dn != NULL ) free( p_dn );
 504         if( p_ndn != NULL ) free( p_ndn );
 505
 506         /* LDAP v2 supporting correct attribute handling. */
 507         if( new_rdn_type != NULL ) free(new_rdn_type);
 508         if( new_rdn_val != NULL ) free(new_rdn_val);
 509         if( old_rdn != NULL ) free(old_rdn);
 510         if( old_rdn_type != NULL ) free(old_rdn_type);
 511         if( old_rdn_val != NULL ) free(old_rdn_val);
 512
 513
 514         /* LDAP v3 Support */
 515         if ( np_dn != NULL ) free( np_dn );
 516         if ( np_ndn != NULL ) free( np_ndn );
 517
 518         if( np != NULL ) {
 519                 /* free new parent and writer lock */
 520                 cache_return_entry_w( &li->li_cache, np );
 521         }
 522
 523         if( p != NULL ) {
 524                 /* free parent and writer lock */
 525                 cache_return_entry_w( &li->li_cache, p );
 526         }
 527
 528         if ( rootlock ) {
 529                 /* release root writer lock */
 530                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 531         }
 532
 533         /* free entry and writer lock */
 534         cache_return_entry_w( &li->li_cache, e );
 535         return( rc );
 536 }