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

   1 /* add.c - ldap ldbm back-end add routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/socket.h>
  22 #include <ac/string.h>
  23
  24 #include "slap.h"
  25 #include "back-ldbm.h"
  26 #include "proto-back-ldbm.h"
  27
  28 static int
  29 ldbm_csn_cb(
  30         Operation *op,
  31         SlapReply *rs )
  32 {
  33         op->o_callback = op->o_callback->sc_next;
  34         slap_graduate_commit_csn( op );
  35         return SLAP_CB_CONTINUE;
  36 }
  37
  38 int
  39 ldbm_back_add(
  40     Operation   *op,
  41     SlapReply   *rs )
  42 {
  43         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  44         struct berval   pdn;
  45         Entry           *p = NULL;
  46         ID               id = NOID;
  47         AttributeDescription *children = slap_schema.si_ad_children;
  48         AttributeDescription *entry = slap_schema.si_ad_entry;
  49         char textbuf[SLAP_TEXT_BUFLEN];
  50         size_t textlen = sizeof textbuf;
  51         slap_callback cb = { NULL };
  52 #ifdef LDBM_SUBENTRIES
  53         int subentry;
  54 #endif
  55
  56         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n",
  57                 op->o_req_dn.bv_val, 0, 0);
  58
  59         rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
  60         if ( rs->sr_err != LDAP_SUCCESS ) {
  61                 Debug( LDAP_DEBUG_TRACE,
  62                         "entry failed op attrs add: %s (%d)\n",
  63                         rs->sr_text, rs->sr_err, 0 );
  64                 goto return_results;
  65         }
  66
  67         cb.sc_cleanup = ldbm_csn_cb;
  68         cb.sc_next = op->o_callback;
  69         op->o_callback = &cb;
  70
  71         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  72                 get_manageDIT(op), &rs->sr_text, textbuf, textlen );
  73
  74         if ( rs->sr_err != LDAP_SUCCESS ) {
  75                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  76                         rs->sr_text, 0, 0 );
  77
  78                 send_ldap_result( op, rs );
  79                 return rs->sr_err;
  80         }
  81         rs->sr_text = NULL;
  82
  83 #ifdef LDBM_SUBENTRIES
  84         subentry = is_entry_subentry( op->oq_add.rs_e );
  85 #endif
  86
  87         if ( !access_allowed( op, op->oq_add.rs_e,
  88                                 entry, NULL, ACL_WADD, NULL ) )
  89         {
  90                 Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
  91                     0, 0 );
  92
  93                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  94                     "no write access to entry" );
  95
  96                 return LDAP_INSUFFICIENT_ACCESS;
  97         }
  98
  99         /* grab giant lock for writing */
 100         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
 101
 102         rs->sr_err = dn2id( op->o_bd, &op->o_req_ndn, &id );
 103         if ( rs->sr_err || id != NOID ) {
 104                 /* if (rs->sr_err) something bad happened to ldbm cache */
 105                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 106                 rs->sr_err = rs->sr_err ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
 107                 send_ldap_result( op, rs );
 108                 return rs->sr_err;
 109         }
 110
 111         /*
 112          * Get the parent dn and see if the corresponding entry exists.
 113          * If the parent does not exist, only allow the "root" user to
 114          * add the entry.
 115          */
 116
 117         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 118                 pdn = slap_empty_bv;
 119         } else {
 120                 dnParent( &op->o_req_ndn, &pdn );
 121         }
 122
 123         if( pdn.bv_len ) {
 124                 Entry *matched = NULL;
 125
 126                 /* get parent with writer lock */
 127                 if ( (p = dn2entry_w( op->o_bd, &pdn, &matched )) == NULL ) {
 128                         if ( matched != NULL ) {
 129                                 rs->sr_matched = ch_strdup( matched->e_dn );
 130                                 rs->sr_ref = is_entry_referral( matched )
 131                                         ? get_entry_referrals( op, matched )
 132                                         : NULL;
 133                                 cache_return_entry_r( &li->li_cache, matched );
 134
 135                         } else {
 136                                 rs->sr_ref = referral_rewrite( default_referral,
 137                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 138                         }
 139
 140                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 141
 142                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 143                                 0, 0, 0 );
 144
 145                         rs->sr_text = rs->sr_ref
 146                                 ? "parent is referral" : "parent does not exist";
 147                         rs->sr_err = LDAP_REFERRAL;
 148                         send_ldap_result( op, rs );
 149
 150                         ber_bvarray_free( rs->sr_ref );
 151                         free( (char *)rs->sr_matched );
 152                         rs->sr_ref = NULL;
 153                         rs->sr_matched = NULL;
 154                         return rs->sr_err;
 155                 }
 156
 157                 if ( ! access_allowed( op, p, children, NULL, ACL_WADD, NULL ) ) {
 158                         /* free parent and writer lock */
 159                         cache_return_entry_w( &li->li_cache, p );
 160                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 161
 162                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 163                             0, 0 );
 164
 165                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 166                             "no write access to parent" );
 167
 168                         return LDAP_INSUFFICIENT_ACCESS;
 169                 }
 170
 171 #ifdef LDBM_SUBENTRIES
 172                 if ( is_entry_subentry( p )) {
 173                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 174                                 0, 0, 0 );
 175                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 176                         rs->sr_text = "parent is a subentry";
 177                         goto return_results;
 178                 }
 179 #endif
 180
 181                 if ( is_entry_alias( p ) ) {
 182                         /* parent is an alias, don't allow add */
 183
 184                         /* free parent and writer lock */
 185                         cache_return_entry_w( &li->li_cache, p );
 186                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 187
 188                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 189                             0, 0 );
 190
 191                         send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
 192                             "parent is an alias" );
 193
 194                         return LDAP_ALIAS_PROBLEM;
 195                 }
 196
 197                 if ( is_entry_referral( p ) ) {
 198                         /* parent is a referral, don't allow add */
 199                         rs->sr_matched = ch_strdup( p->e_dn );
 200                         rs->sr_ref = is_entry_referral( p )
 201                                 ? get_entry_referrals( op, p )
 202                                 : NULL;
 203
 204                         /* free parent and writer lock */
 205                         cache_return_entry_w( &li->li_cache, p );
 206                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 207
 208                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 209                             0, 0 );
 210                         rs->sr_err = LDAP_REFERRAL;
 211                         send_ldap_result( op, rs );
 212
 213                         ber_bvarray_free( rs->sr_ref );
 214                         free( (char *)rs->sr_matched );
 215                         rs->sr_ref = NULL;
 216                         rs->sr_matched = NULL;
 217                         return rs->sr_err;
 218                 }
 219
 220 #ifdef LDBM_SUBENTRIES
 221                 if ( subentry ) {
 222                         /* FIXME: */
 223                         /* parent must be an administrative point of the required kind */
 224                 }
 225 #endif
 226
 227         } else {
 228                 assert( pdn.bv_val == NULL || *pdn.bv_val == '\0' );
 229
 230                 if (( !be_isroot(op) && !be_shadow_update(op) )
 231                         && !is_entry_glue( op->oq_add.rs_e ))
 232                 {
 233                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 234
 235                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 236                                 pdn.bv_val == NULL ? "suffix" : "entry at root", 0, 0 );
 237
 238                         send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT, NULL );
 239                         return LDAP_NO_SUCH_OBJECT;
 240                 }
 241         }
 242
 243         if ( next_id( op->o_bd, &op->oq_add.rs_e->e_id ) ) {
 244                 if( p != NULL) {
 245                         /* free parent and writer lock */
 246                         cache_return_entry_w( &li->li_cache, p );
 247                 }
 248
 249                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 250
 251                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 252                         0, 0, 0 );
 253
 254                 send_ldap_error( op, rs, LDAP_OTHER,
 255                         "next_id add failed" );
 256
 257                 return LDAP_OTHER;
 258         }
 259
 260         /*
 261          * Try to add the entry to the cache, assign it a new dnid.
 262          */
 263         rs->sr_err = cache_add_entry_rw( &li->li_cache, op->oq_add.rs_e,
 264                 CACHE_WRITE_LOCK );
 265
 266         if ( rs->sr_err != 0 ) {
 267                 if( p != NULL) {
 268                         /* free parent and writer lock */
 269                         cache_return_entry_w( &li->li_cache, p );
 270                 }
 271
 272                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 273
 274                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 275                     0 );
 276
 277                 rs->sr_text = rs->sr_err > 0 ? NULL : "cache add failed";
 278                 rs->sr_err = rs->sr_err > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER;
 279                 send_ldap_result( op, rs );
 280
 281                 return rs->sr_err;
 282         }
 283
 284         rs->sr_err = -1;
 285
 286         /* attribute indexes */
 287         if ( index_entry_add( op, op->oq_add.rs_e ) != LDAP_SUCCESS ) {
 288                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 289                     0, 0 );
 290
 291                 send_ldap_error( op, rs, LDAP_OTHER,
 292                         "index generation failed" );
 293
 294                 goto return_results;
 295         }
 296
 297         /* dn2id index */
 298         if ( dn2id_add( op->o_bd, &op->oq_add.rs_e->e_nname,
 299                 op->oq_add.rs_e->e_id ) != 0 )
 300         {
 301                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 302                     0, 0 );
 303                 /* FIXME: delete attr indices? */
 304
 305                 send_ldap_error( op, rs, LDAP_OTHER,
 306                         "DN index generation failed" );
 307
 308                 goto return_results;
 309         }
 310
 311         /* id2entry index */
 312         if ( id2entry_add( op->o_bd, op->oq_add.rs_e ) != 0 ) {
 313                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 314                     0, 0 );
 315
 316                 /* FIXME: delete attr indices? */
 317                 (void) dn2id_delete( op->o_bd, &op->oq_add.rs_e->e_nname,
 318                         op->oq_add.rs_e->e_id );
 319
 320                 send_ldap_error( op, rs, LDAP_OTHER,
 321                         "entry store failed" );
 322
 323                 goto return_results;
 324         }
 325
 326         rs->sr_err = LDAP_SUCCESS;
 327         rs->sr_text = NULL;
 328         send_ldap_result( op, rs );
 329
 330         /* marks the entry as committed, so it is added to the cache;
 331          * otherwise it is removed from the cache, but not destroyed;
 332          * it will be destroyed by the caller */
 333         cache_entry_commit( op->oq_add.rs_e );
 334
 335 return_results:;
 336         if (p != NULL) {
 337                 /* free parent and writer lock */
 338                 cache_return_entry_w( &li->li_cache, p );
 339         }
 340
 341         if ( rs->sr_err ) {
 342                 /*
 343                  * in case of error, writer lock is freed
 344                  * and entry's private data is destroyed.
 345                  * otherwise, this is done when entry is released
 346                  */
 347                 cache_return_entry_w( &li->li_cache, op->oq_add.rs_e );
 348                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 349         }
 350
 351         return( rs->sr_err );
 352 }