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 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         slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
  60
  61         cb.sc_cleanup = ldbm_csn_cb;
  62         cb.sc_next = op->o_callback;
  63         op->o_callback = &cb;
  64
  65         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  66                 get_manageDIT(op), &rs->sr_text, textbuf, textlen );
  67
  68         if ( rs->sr_err != LDAP_SUCCESS ) {
  69                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  70                         rs->sr_text, 0, 0 );
  71
  72                 send_ldap_result( op, rs );
  73                 return rs->sr_err;
  74         }
  75         rs->sr_text = NULL;
  76
  77 #ifdef LDBM_SUBENTRIES
  78         subentry = is_entry_subentry( op->oq_add.rs_e );
  79 #endif
  80
  81         if ( !access_allowed( op, op->oq_add.rs_e,
  82                                 entry, NULL, ACL_WADD, NULL ) )
  83         {
  84                 Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
  85                     0, 0 );
  86
  87                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  88                     "no write access to entry" );
  89
  90                 return LDAP_INSUFFICIENT_ACCESS;
  91         }
  92
  93         /* grab giant lock for writing */
  94         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  95
  96         rs->sr_err = dn2id( op->o_bd, &op->o_req_ndn, &id );
  97         if ( rs->sr_err || id != NOID ) {
  98                 /* if (rs->sr_err) something bad happened to ldbm cache */
  99                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 100                 rs->sr_err = rs->sr_err ? LDAP_OTHER : LDAP_ALREADY_EXISTS;
 101                 send_ldap_result( op, rs );
 102                 return rs->sr_err;
 103         }
 104
 105         /*
 106          * Get the parent dn and see if the corresponding entry exists.
 107          * If the parent does not exist, only allow the "root" user to
 108          * add the entry.
 109          */
 110
 111         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 112                 pdn = slap_empty_bv;
 113         } else {
 114                 dnParent( &op->o_req_ndn, &pdn );
 115         }
 116
 117         if( pdn.bv_len ) {
 118                 Entry *matched = NULL;
 119
 120                 /* get parent with writer lock */
 121                 if ( (p = dn2entry_w( op->o_bd, &pdn, &matched )) == NULL ) {
 122                         if ( matched != NULL ) {
 123                                 rs->sr_matched = ch_strdup( matched->e_dn );
 124                                 rs->sr_ref = is_entry_referral( matched )
 125                                         ? get_entry_referrals( op, matched )
 126                                         : NULL;
 127                                 cache_return_entry_r( &li->li_cache, matched );
 128
 129                         } else {
 130                                 rs->sr_ref = referral_rewrite( default_referral,
 131                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 132                         }
 133
 134                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 135
 136                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 137                                 0, 0, 0 );
 138
 139                         rs->sr_text = rs->sr_ref
 140                                 ? "parent is referral" : "parent does not exist";
 141                         rs->sr_err = LDAP_REFERRAL;
 142                         send_ldap_result( op, rs );
 143
 144                         ber_bvarray_free( rs->sr_ref );
 145                         free( (char *)rs->sr_matched );
 146                         rs->sr_ref = NULL;
 147                         rs->sr_matched = NULL;
 148                         return rs->sr_err;
 149                 }
 150
 151                 if ( ! access_allowed( op, p, children, NULL, ACL_WADD, NULL ) ) {
 152                         /* free parent and writer lock */
 153                         cache_return_entry_w( &li->li_cache, p );
 154                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 155
 156                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 157                             0, 0 );
 158
 159                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 160                             "no write access to parent" );
 161
 162                         return LDAP_INSUFFICIENT_ACCESS;
 163                 }
 164
 165 #ifdef LDBM_SUBENTRIES
 166                 if ( is_entry_subentry( p )) {
 167                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 168                                 0, 0, 0 );
 169                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 170                         rs->sr_text = "parent is a subentry";
 171                         goto return_results;
 172                 }
 173 #endif
 174
 175                 if ( is_entry_alias( p ) ) {
 176                         /* parent is an alias, don't allow add */
 177
 178                         /* free parent and writer lock */
 179                         cache_return_entry_w( &li->li_cache, p );
 180                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 181
 182                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 183                             0, 0 );
 184
 185                         send_ldap_error( op, rs, LDAP_ALIAS_PROBLEM,
 186                             "parent is an alias" );
 187
 188                         return LDAP_ALIAS_PROBLEM;
 189                 }
 190
 191                 if ( is_entry_referral( p ) ) {
 192                         /* parent is a referral, don't allow add */
 193                         rs->sr_matched = ch_strdup( p->e_dn );
 194                         rs->sr_ref = is_entry_referral( p )
 195                                 ? get_entry_referrals( op, p )
 196                                 : NULL;
 197
 198                         /* free parent and writer lock */
 199                         cache_return_entry_w( &li->li_cache, p );
 200                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 201
 202                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 203                             0, 0 );
 204                         rs->sr_err = LDAP_REFERRAL;
 205                         send_ldap_result( op, rs );
 206
 207                         ber_bvarray_free( rs->sr_ref );
 208                         free( (char *)rs->sr_matched );
 209                         rs->sr_ref = NULL;
 210                         rs->sr_matched = NULL;
 211                         return rs->sr_err;
 212                 }
 213
 214 #ifdef LDBM_SUBENTRIES
 215                 if ( subentry ) {
 216                         /* FIXME: */
 217                         /* parent must be an administrative point of the required kind */
 218                 }
 219 #endif
 220
 221         } else {
 222                 assert( pdn.bv_val == NULL || *pdn.bv_val == '\0' );
 223
 224                 if (( !be_isroot(op) && !be_shadow_update(op) )
 225                         && !is_entry_glue( op->oq_add.rs_e ))
 226                 {
 227                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 228
 229                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 230                                 pdn.bv_val == NULL ? "suffix" : "entry at root", 0, 0 );
 231
 232                         send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT, NULL );
 233                         return LDAP_NO_SUCH_OBJECT;
 234                 }
 235         }
 236
 237         if ( next_id( op->o_bd, &op->oq_add.rs_e->e_id ) ) {
 238                 if( p != NULL) {
 239                         /* free parent and writer lock */
 240                         cache_return_entry_w( &li->li_cache, p );
 241                 }
 242
 243                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 244
 245                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 246                         0, 0, 0 );
 247
 248                 send_ldap_error( op, rs, LDAP_OTHER,
 249                         "next_id add failed" );
 250
 251                 return LDAP_OTHER;
 252         }
 253
 254         /*
 255          * Try to add the entry to the cache, assign it a new dnid.
 256          */
 257         rs->sr_err = cache_add_entry_rw( &li->li_cache, op->oq_add.rs_e,
 258                 CACHE_WRITE_LOCK );
 259
 260         if ( rs->sr_err != 0 ) {
 261                 if( p != NULL) {
 262                         /* free parent and writer lock */
 263                         cache_return_entry_w( &li->li_cache, p );
 264                 }
 265
 266                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 267
 268                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 269                     0 );
 270
 271                 rs->sr_text = rs->sr_err > 0 ? NULL : "cache add failed";
 272                 rs->sr_err = rs->sr_err > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER;
 273                 send_ldap_result( op, rs );
 274
 275                 return rs->sr_err;
 276         }
 277
 278         rs->sr_err = -1;
 279
 280         /* attribute indexes */
 281         if ( index_entry_add( op, op->oq_add.rs_e ) != LDAP_SUCCESS ) {
 282                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 283                     0, 0 );
 284
 285                 send_ldap_error( op, rs, LDAP_OTHER,
 286                         "index generation failed" );
 287
 288                 goto return_results;
 289         }
 290
 291         /* dn2id index */
 292         if ( dn2id_add( op->o_bd, &op->oq_add.rs_e->e_nname,
 293                 op->oq_add.rs_e->e_id ) != 0 )
 294         {
 295                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 296                     0, 0 );
 297                 /* FIXME: delete attr indices? */
 298
 299                 send_ldap_error( op, rs, LDAP_OTHER,
 300                         "DN index generation failed" );
 301
 302                 goto return_results;
 303         }
 304
 305         /* id2entry index */
 306         if ( id2entry_add( op->o_bd, op->oq_add.rs_e ) != 0 ) {
 307                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 308                     0, 0 );
 309
 310                 /* FIXME: delete attr indices? */
 311                 (void) dn2id_delete( op->o_bd, &op->oq_add.rs_e->e_nname,
 312                         op->oq_add.rs_e->e_id );
 313
 314                 send_ldap_error( op, rs, LDAP_OTHER,
 315                         "entry store failed" );
 316
 317                 goto return_results;
 318         }
 319
 320         rs->sr_err = LDAP_SUCCESS;
 321         rs->sr_text = NULL;
 322         send_ldap_result( op, rs );
 323
 324         /* marks the entry as committed, so it is added to the cache;
 325          * otherwise it is removed from the cache, but not destroyed;
 326          * it will be destroyed by the caller */
 327         cache_entry_commit( op->oq_add.rs_e );
 328
 329 return_results:;
 330         if (p != NULL) {
 331                 /* free parent and writer lock */
 332                 cache_return_entry_w( &li->li_cache, p );
 333         }
 334
 335         if ( rs->sr_err ) {
 336                 /*
 337                  * in case of error, writer lock is freed
 338                  * and entry's private data is destroyed.
 339                  * otherwise, this is done when entry is released
 340                  */
 341                 cache_return_entry_w( &li->li_cache, op->oq_add.rs_e );
 342                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 343         }
 344
 345         return( rs->sr_err );
 346 }