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, op->oq_add.rs_e, NULL,
  49                 get_manageDIT(op), &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         rs->sr_text = NULL;
  59
  60 #ifdef LDBM_SUBENTRIES
  61         subentry = is_entry_subentry( op->oq_add.rs_e );
  62 #endif
  63
  64         if ( !access_allowed( op, op->oq_add.rs_e,
  65                                 entry, NULL, ACL_WADD, NULL ) )
  66         {
  67                 Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
  68                     0, 0 );
  69
  70                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  71                     "no write access to entry" );
  72
  73                 return LDAP_INSUFFICIENT_ACCESS;
  74         }
  75
  76         /* grab giant lock for writing */
  77         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  78
  79         rs->sr_err = dn2id( op->o_bd, &op->o_req_ndn, &id );
  80         if ( rs->sr_err || id != NOID ) {
  81                 /* if (rs->sr_err) something bad happened to ldbm cache */
  82                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  83                 rs->sr_err = rs->sr_err ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
  84                 send_ldap_result( op, rs );
  85                 return rs->sr_err;
  86         }
  87
  88         /*
  89          * Get the parent dn and see if the corresponding entry exists.
  90          * If the parent does not exist, only allow the "root" user to
  91          * add the entry.
  92          */
  93
  94         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  95                 pdn = slap_empty_bv;
  96         } else {
  97                 dnParent( &op->o_req_ndn, &pdn );
  98         }
  99
 100         if( pdn.bv_len ) {
 101                 Entry *matched = NULL;
 102
 103                 /* get parent with writer lock */
 104                 if ( (p = dn2entry_w( op->o_bd, &pdn, &matched )) == NULL ) {
 105                         if ( matched != NULL ) {
 106                                 rs->sr_matched = ch_strdup( matched->e_dn );
 107                                 rs->sr_ref = is_entry_referral( matched )
 108                                         ? get_entry_referrals( op, matched )
 109                                         : NULL;
 110                                 cache_return_entry_r( &li->li_cache, matched );
 111
 112                         } else {
 113                                 rs->sr_ref = referral_rewrite( default_referral,
 114                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 115                         }
 116
 117                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 118
 119                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 120                                 0, 0, 0 );
 121
 122                         rs->sr_text = rs->sr_ref
 123                                 ? "parent is referral" : "parent does not exist";
 124                         rs->sr_err = LDAP_REFERRAL;
 125                         send_ldap_result( op, rs );
 126
 127                         ber_bvarray_free( rs->sr_ref );
 128                         free( (char *)rs->sr_matched );
 129                         rs->sr_ref = NULL;
 130                         rs->sr_matched = NULL;
 131                         return rs->sr_err;
 132                 }
 133
 134                 if ( ! access_allowed( op, p, children, NULL, ACL_WADD, NULL ) ) {
 135                         /* free parent and writer lock */
 136                         cache_return_entry_w( &li->li_cache, p );
 137                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 138
 139                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 140                             0, 0 );
 141
 142                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 143                             "no write access to parent" );
 144
 145                         return LDAP_INSUFFICIENT_ACCESS;
 146                 }
 147
 148 #ifdef LDBM_SUBENTRIES
 149                 if ( is_entry_subentry( p )) {
 150                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 151                                 0, 0, 0 );
 152                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 153                         rs->sr_text = "parent is a subentry";
 154                         goto return_results;
 155                 }
 156 #endif
 157
 158                 if ( is_entry_alias( p ) ) {
 159                         /* parent is an alias, don't allow add */
 160
 161                         /* free parent and writer lock */
 162                         cache_return_entry_w( &li->li_cache, p );
 163                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 164
 165                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 166                             0, 0 );
 167
 168                         send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
 169                             "parent is an alias" );
 170
 171                         return LDAP_ALIAS_PROBLEM;
 172                 }
 173
 174                 if ( is_entry_referral( p ) ) {
 175                         /* parent is a referral, don't allow add */
 176                         rs->sr_matched = ch_strdup( p->e_dn );
 177                         rs->sr_ref = is_entry_referral( p )
 178                                 ? get_entry_referrals( op, p )
 179                                 : NULL;
 180
 181                         /* free parent and writer lock */
 182                         cache_return_entry_w( &li->li_cache, p );
 183                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 184
 185                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 186                             0, 0 );
 187                         rs->sr_err = LDAP_REFERRAL;
 188                         send_ldap_result( op, rs );
 189
 190                         ber_bvarray_free( rs->sr_ref );
 191                         free( (char *)rs->sr_matched );
 192                         rs->sr_ref = NULL;
 193                         rs->sr_matched = NULL;
 194                         return rs->sr_err;
 195                 }
 196
 197 #ifdef LDBM_SUBENTRIES
 198                 if ( subentry ) {
 199                         /* FIXME: */
 200                         /* parent must be an administrative point of the required kind */
 201                 }
 202 #endif
 203
 204         } else {
 205                 assert( pdn.bv_val == NULL || *pdn.bv_val == '\0' );
 206
 207                 if (( !be_isroot(op) && !be_shadow_update(op) )
 208                         && !is_entry_glue( op->oq_add.rs_e ))
 209                 {
 210                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 211
 212                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 213                                 pdn.bv_val == NULL ? "suffix" : "entry at root", 0, 0 );
 214
 215                         send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT, NULL );
 216                         return LDAP_NO_SUCH_OBJECT;
 217                 }
 218         }
 219
 220         if ( next_id( op->o_bd, &op->oq_add.rs_e->e_id ) ) {
 221                 if( p != NULL) {
 222                         /* free parent and writer lock */
 223                         cache_return_entry_w( &li->li_cache, p );
 224                 }
 225
 226                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 227
 228                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 229                         0, 0, 0 );
 230
 231                 send_ldap_error( op, rs, LDAP_OTHER,
 232                         "next_id add failed" );
 233
 234                 return LDAP_OTHER;
 235         }
 236
 237         /*
 238          * Try to add the entry to the cache, assign it a new dnid.
 239          */
 240         rs->sr_err = cache_add_entry_rw( &li->li_cache, op->oq_add.rs_e,
 241                 CACHE_WRITE_LOCK );
 242
 243         if ( rs->sr_err != 0 ) {
 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, "cache_add_entry_lock failed\n", 0, 0,
 252                     0 );
 253
 254                 rs->sr_text = rs->sr_err > 0 ? NULL : "cache add failed";
 255                 rs->sr_err = rs->sr_err > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER;
 256                 send_ldap_result( op, rs );
 257
 258                 return rs->sr_err;
 259         }
 260
 261         rs->sr_err = -1;
 262
 263         /* attribute indexes */
 264         if ( index_entry_add( op, op->oq_add.rs_e ) != LDAP_SUCCESS ) {
 265                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 266                     0, 0 );
 267
 268                 send_ldap_error( op, rs, LDAP_OTHER,
 269                         "index generation failed" );
 270
 271                 goto return_results;
 272         }
 273
 274         /* dn2id index */
 275         if ( dn2id_add( op->o_bd, &op->oq_add.rs_e->e_nname,
 276                 op->oq_add.rs_e->e_id ) != 0 )
 277         {
 278                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 279                     0, 0 );
 280                 /* FIXME: delete attr indices? */
 281
 282                 send_ldap_error( op, rs, LDAP_OTHER,
 283                         "DN index generation failed" );
 284
 285                 goto return_results;
 286         }
 287
 288         /* id2entry index */
 289         if ( id2entry_add( op->o_bd, op->oq_add.rs_e ) != 0 ) {
 290                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 291                     0, 0 );
 292
 293                 /* FIXME: delete attr indices? */
 294                 (void) dn2id_delete( op->o_bd, &op->oq_add.rs_e->e_nname,
 295                         op->oq_add.rs_e->e_id );
 296
 297                 send_ldap_error( op, rs, LDAP_OTHER,
 298                         "entry store failed" );
 299
 300                 goto return_results;
 301         }
 302
 303         rs->sr_err = LDAP_SUCCESS;
 304         rs->sr_text = NULL;
 305         send_ldap_result( op, rs );
 306
 307         /* marks the entry as committed, so it is added to the cache;
 308          * otherwise it is removed from the cache, but not destroyed;
 309          * it will be destroyed by the caller */
 310         cache_entry_commit( op->oq_add.rs_e );
 311
 312 return_results:;
 313         if (p != NULL) {
 314                 /* free parent and writer lock */
 315                 cache_return_entry_w( &li->li_cache, p );
 316         }
 317
 318         if ( rs->sr_err ) {
 319                 /*
 320                  * in case of error, writer lock is freed
 321                  * and entry's private data is destroyed.
 322                  * otherwise, this is done when entry is released
 323                  */
 324                 cache_return_entry_w( &li->li_cache, op->oq_add.rs_e );
 325                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 326         }
 327
 328         return( rs->sr_err );
 329 }