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 1998-2005 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 int
  29 ldbm_back_add(
  30     Operation   *op,
  31     SlapReply   *rs )
  32 {
  33         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  34         struct berval   pdn;
  35         Entry           *p = NULL;
  36         ID               id = NOID;
  37         AttributeDescription *children = slap_schema.si_ad_children;
  38         AttributeDescription *entry = slap_schema.si_ad_entry;
  39         char textbuf[SLAP_TEXT_BUFLEN];
  40         size_t textlen = sizeof textbuf;
  41 #ifdef LDBM_SUBENTRIES
  42         int subentry;
  43 #endif
  44
  45         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n",
  46                 op->o_req_dn.bv_val, 0, 0);
  47
  48         rs->sr_err = entry_schema_check( op->o_bd, op->oq_add.rs_e, NULL,
  49                 &rs->sr_text, textbuf, textlen );
  50
  51         if ( rs->sr_err != LDAP_SUCCESS ) {
  52                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  53                         rs->sr_text, 0, 0 );
  54
  55                 send_ldap_result( op, rs );
  56                 return rs->sr_err;
  57         }
  58
  59 #ifdef LDBM_SUBENTRIES
  60         subentry = is_entry_subentry( op->oq_add.rs_e );
  61 #endif
  62
  63         if ( !access_allowed( op, op->oq_add.rs_e,
  64                                 entry, NULL, ACL_WRITE, NULL ) )
  65         {
  66                 Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
  67                     0, 0 );
  68
  69                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  70                     "no write access to entry" );
  71
  72                 return LDAP_INSUFFICIENT_ACCESS;
  73         }
  74
  75         /* grab giant lock for writing */
  76         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  77
  78         rs->sr_err = dn2id( op->o_bd, &op->o_req_ndn, &id );
  79         if ( rs->sr_err || id != NOID ) {
  80                 /* if (rs->sr_err) something bad happened to ldbm cache */
  81                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  82                 rs->sr_err = rs->sr_err ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
  83                 send_ldap_result( op, rs );
  84                 return rs->sr_err;
  85         }
  86
  87         /*
  88          * Get the parent dn and see if the corresponding entry exists.
  89          * If the parent does not exist, only allow the "root" user to
  90          * add the entry.
  91          */
  92
  93         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  94                 pdn = slap_empty_bv;
  95         } else {
  96                 dnParent( &op->o_req_ndn, &pdn );
  97         }
  98
  99         if( pdn.bv_len ) {
 100                 Entry *matched = NULL;
 101
 102                 /* get parent with writer lock */
 103                 if ( (p = dn2entry_w( op->o_bd, &pdn, &matched )) == NULL ) {
 104                         if ( matched != NULL ) {
 105                                 rs->sr_matched = ch_strdup( matched->e_dn );
 106                                 rs->sr_ref = is_entry_referral( matched )
 107                                         ? get_entry_referrals( op, matched )
 108                                         : NULL;
 109                                 cache_return_entry_r( &li->li_cache, matched );
 110
 111                         } else {
 112                                 rs->sr_ref = referral_rewrite( default_referral,
 113                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 114                         }
 115
 116                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 117
 118                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 119                                 0, 0, 0 );
 120
 121                         rs->sr_text = rs->sr_ref
 122                                 ? "parent is referral" : "parent does not exist";
 123                         rs->sr_err = LDAP_REFERRAL;
 124                         send_ldap_result( op, rs );
 125
 126                         ber_bvarray_free( rs->sr_ref );
 127                         free( (char *)rs->sr_matched );
 128                         rs->sr_ref = NULL;
 129                         rs->sr_matched = NULL;
 130                         return rs->sr_err;
 131                 }
 132
 133                 if ( ! access_allowed( op, p, children, NULL, ACL_WRITE, NULL ) ) {
 134                         /* free parent and writer lock */
 135                         cache_return_entry_w( &li->li_cache, p );
 136                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 137
 138                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 139                             0, 0 );
 140
 141                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 142                             "no write access to parent" );
 143
 144                         return LDAP_INSUFFICIENT_ACCESS;
 145                 }
 146
 147 #ifdef LDBM_SUBENTRIES
 148                 if ( is_entry_subentry( p )) {
 149                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 150                                 0, 0, 0 );
 151                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 152                         rs->sr_text = "parent is a subentry";
 153                         goto return_results;
 154                 }
 155 #endif
 156
 157                 if ( is_entry_alias( p ) ) {
 158                         /* parent is an alias, don't allow add */
 159
 160                         /* free parent and writer lock */
 161                         cache_return_entry_w( &li->li_cache, p );
 162                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 163
 164                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 165                             0, 0 );
 166
 167                         send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
 168                             "parent is an alias" );
 169
 170                         return LDAP_ALIAS_PROBLEM;
 171                 }
 172
 173                 if ( is_entry_referral( p ) ) {
 174                         /* parent is a referral, don't allow add */
 175                         rs->sr_matched = ch_strdup( p->e_dn );
 176                         rs->sr_ref = is_entry_referral( p )
 177                                 ? get_entry_referrals( op, p )
 178                                 : NULL;
 179
 180                         /* free parent and writer lock */
 181                         cache_return_entry_w( &li->li_cache, p );
 182                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 183
 184                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 185                             0, 0 );
 186                         rs->sr_err = LDAP_REFERRAL;
 187                         send_ldap_result( op, rs );
 188
 189                         ber_bvarray_free( rs->sr_ref );
 190                         free( (char *)rs->sr_matched );
 191                         rs->sr_ref = NULL;
 192                         rs->sr_matched = NULL;
 193                         return rs->sr_err;
 194                 }
 195
 196 #ifdef LDBM_SUBENTRIES
 197                 if ( subentry ) {
 198                         /* FIXME: */
 199                         /* parent must be an administrative point of the required kind */
 200                 }
 201 #endif
 202
 203         } else {
 204                 assert( pdn.bv_val == NULL || *pdn.bv_val == '\0' );
 205
 206                 if (( !be_isroot(op) && !be_shadow_update(op) )
 207                         && !is_entry_glue( op->oq_add.rs_e ))
 208                 {
 209                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 210
 211                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 212                                 pdn.bv_val == NULL ? "suffix" : "entry at root", 0, 0 );
 213
 214                         send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT, NULL );
 215                         return LDAP_NO_SUCH_OBJECT;
 216                 }
 217         }
 218
 219         if ( next_id( op->o_bd, &op->oq_add.rs_e->e_id ) ) {
 220                 if( p != NULL) {
 221                         /* free parent and writer lock */
 222                         cache_return_entry_w( &li->li_cache, p );
 223                 }
 224
 225                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 226
 227                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 228                         0, 0, 0 );
 229
 230                 send_ldap_error( op, rs, LDAP_OTHER,
 231                         "next_id add failed" );
 232
 233                 return LDAP_OTHER;
 234         }
 235
 236         /*
 237          * Try to add the entry to the cache, assign it a new dnid.
 238          */
 239         rs->sr_err = cache_add_entry_rw( &li->li_cache, op->oq_add.rs_e,
 240                 CACHE_WRITE_LOCK );
 241
 242         if ( rs->sr_err != 0 ) {
 243                 if( p != NULL) {
 244                         /* free parent and writer lock */
 245                         cache_return_entry_w( &li->li_cache, p );
 246                 }
 247
 248                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 249
 250                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 251                     0 );
 252
 253                 rs->sr_text = rs->sr_err > 0 ? NULL : "cache add failed";
 254                 rs->sr_err = rs->sr_err > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER;
 255                 send_ldap_result( op, rs );
 256
 257                 return rs->sr_err;
 258         }
 259
 260         rs->sr_err = -1;
 261
 262         /* attribute indexes */
 263         if ( index_entry_add( op, op->oq_add.rs_e ) != LDAP_SUCCESS ) {
 264                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 265                     0, 0 );
 266
 267                 send_ldap_error( op, rs, LDAP_OTHER,
 268                         "index generation failed" );
 269
 270                 goto return_results;
 271         }
 272
 273         /* dn2id index */
 274         if ( dn2id_add( op->o_bd, &op->oq_add.rs_e->e_nname,
 275                 op->oq_add.rs_e->e_id ) != 0 )
 276         {
 277                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 278                     0, 0 );
 279                 /* FIXME: delete attr indices? */
 280
 281                 send_ldap_error( op, rs, LDAP_OTHER,
 282                         "DN index generation failed" );
 283
 284                 goto return_results;
 285         }
 286
 287         /* id2entry index */
 288         if ( id2entry_add( op->o_bd, op->oq_add.rs_e ) != 0 ) {
 289                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 290                     0, 0 );
 291
 292                 /* FIXME: delete attr indices? */
 293                 (void) dn2id_delete( op->o_bd, &op->oq_add.rs_e->e_nname,
 294                         op->oq_add.rs_e->e_id );
 295
 296                 send_ldap_error( op, rs, LDAP_OTHER,
 297                         "entry store failed" );
 298
 299                 goto return_results;
 300         }
 301
 302         rs->sr_err = LDAP_SUCCESS;
 303         rs->sr_text = NULL;
 304         send_ldap_result( op, rs );
 305
 306         /* marks the entry as committed, so it is added to the cache;
 307          * otherwise it is removed from the cache, but not destroyed;
 308          * it will be destroyed by the caller */
 309         cache_entry_commit( op->oq_add.rs_e );
 310
 311 return_results:;
 312         if (p != NULL) {
 313                 /* free parent and writer lock */
 314                 cache_return_entry_w( &li->li_cache, p );
 315         }
 316
 317         if ( rs->sr_err ) {
 318                 /*
 319                  * in case of error, writer lock is freed
 320                  * and entry's private data is destroyed.
 321                  * otherwise, this is done when entry is released
 322                  */
 323                 cache_return_entry_w( &li->li_cache, op->oq_add.rs_e );
 324                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 325         }
 326
 327         return( rs->sr_err );
 328 }