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

   1 /* add.c - ldap ldbm back-end add routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17 #include "proto-back-ldbm.h"
  18
  19 int
  20 ldbm_back_add(
  21     Backend     *be,
  22     Connection  *conn,
  23     Operation   *op,
  24     Entry       *e
  25 )
  26 {
  27         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  28         struct berval   pdn;
  29         Entry           *p = NULL;
  30         int                     rootlock = 0;
  31         int                     rc;
  32         ID               id = NOID;
  33         const char      *text = NULL;
  34         AttributeDescription *children = slap_schema.si_ad_children;
  35         char textbuf[SLAP_TEXT_BUFLEN];
  36         size_t textlen = sizeof textbuf;
  37
  38 #ifdef NEW_LOGGING
  39         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,"ldbm_back_add: %s\n",
  40                 e->e_dn ));
  41 #else
  42         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", e->e_dn, 0, 0);
  43 #endif
  44
  45         /* nobody else can add until we lock our parent */
  46         ldap_pvt_thread_mutex_lock(&li->li_add_mutex);
  47
  48         if ( ( rc = dn2id( be, &e->e_nname, &id ) ) || id != NOID ) {
  49                 /* if (rc) something bad happened to ldbm cache */
  50                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  51                 send_ldap_result( conn, op,
  52                         rc ? LDAP_OPERATIONS_ERROR : LDAP_ALREADY_EXISTS,
  53                         NULL, NULL, NULL, NULL );
  54                 return( -1 );
  55         }
  56
  57         rc = entry_schema_check( be, e, NULL, &text, textbuf, textlen );
  58
  59         if ( rc != LDAP_SUCCESS ) {
  60                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  61
  62 #ifdef NEW_LOGGING
  63                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
  64                         "ldbm_back_add: entry (%s) failed schema check.\n",
  65                         e->e_dn ));
  66 #else
  67                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  68                         text, 0, 0 );
  69 #endif
  70
  71
  72                 send_ldap_result( conn, op, rc,
  73                         NULL, text, NULL, NULL );
  74                 return( -1 );
  75         }
  76
  77         /*
  78          * Get the parent dn and see if the corresponding entry exists.
  79          * If the parent does not exist, only allow the "root" user to
  80          * add the entry.
  81          */
  82
  83         pdn.bv_val = dn_parent( be, e->e_ndn );
  84         if (pdn.bv_val && pdn.bv_val[0])
  85                 pdn.bv_len = e->e_nname.bv_len - (pdn.bv_val - e->e_ndn);
  86         else
  87                 pdn.bv_len = 0;
  88
  89         if( pdn.bv_len ) {
  90                 Entry *matched = NULL;
  91
  92                 /* get parent with writer lock */
  93                 if ( (p = dn2entry_w( be, &pdn, &matched )) == NULL ) {
  94                         char *matched_dn = NULL;
  95                         BVarray refs;
  96
  97                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  98
  99                         if ( matched != NULL ) {
 100                                 matched_dn = ch_strdup( matched->e_dn );
 101                                 refs = is_entry_referral( matched )
 102                                         ? get_entry_referrals( be, conn, op, matched )
 103                                         : NULL;
 104                                 cache_return_entry_r( &li->li_cache, matched );
 105
 106                         } else {
 107                                 refs = referral_rewrite( default_referral,
 108                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 109                         }
 110
 111 #ifdef NEW_LOGGING
 112                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 113                                 "ldbm_back_add: Parent of (%s) does not exist.\n",
 114                                 e->e_dn ));
 115 #else
 116                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 117                                 0, 0, 0 );
 118 #endif
 119
 120                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 121                                 refs == NULL ? "parent does not exist" : "parent is referral",
 122                                 refs, NULL );
 123
 124                         bvarray_free( refs );
 125                         free( matched_dn );
 126
 127                         return -1;
 128                 }
 129
 130                 /* don't need the add lock anymore */
 131                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 132
 133                 if ( ! access_allowed( be, conn, op, p,
 134                         children, NULL, ACL_WRITE ) )
 135                 {
 136                         /* free parent and writer lock */
 137                         cache_return_entry_w( &li->li_cache, p );
 138
 139 #ifdef NEW_LOGGING
 140                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 141                                    "ldbm_back_add: No write access to parent (%s).\n",
 142                                    e->e_dn ));
 143 #else
 144                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 145                             0, 0 );
 146 #endif
 147
 148                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 149                             NULL, "no write access to parent", NULL, NULL );
 150
 151
 152                         return -1;
 153                 }
 154
 155                 if ( is_entry_alias( p ) ) {
 156                         /* parent is an alias, don't allow add */
 157
 158                         /* free parent and writer lock */
 159                         cache_return_entry_w( &li->li_cache, p );
 160
 161 #ifdef NEW_LOGGING
 162                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 163                                    "ldbm_back_add:  Parent is an alias.\n"));
 164 #else
 165                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 166                             0, 0 );
 167 #endif
 168
 169
 170                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 171                             NULL, "parent is an alias", NULL, NULL );
 172
 173                         return -1;
 174                 }
 175
 176                 if ( is_entry_referral( p ) ) {
 177                         /* parent is a referral, don't allow add */
 178                         char *matched_dn = ch_strdup( p->e_dn );
 179                         BVarray refs = is_entry_referral( p )
 180                                 ? get_entry_referrals( be, conn, op, p )
 181                                 : NULL;
 182
 183                         /* free parent and writer lock */
 184                         cache_return_entry_w( &li->li_cache, p );
 185
 186 #ifdef NEW_LOGGING
 187                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 188                                    "ldbm_back_add: Parent is referral.\n" ));
 189 #else
 190                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 191                             0, 0 );
 192 #endif
 193
 194                         send_ldap_result( conn, op, LDAP_REFERRAL,
 195                             matched_dn, NULL, refs, NULL );
 196
 197                         bvarray_free( refs );
 198                         free( matched_dn );
 199                         return -1;
 200                 }
 201
 202         } else {
 203                 if(pdn.bv_val != NULL) {
 204                         assert( *pdn.bv_val == '\0' );
 205                 }
 206
 207                 /* no parent, must be adding entry to root */
 208                 if ( !be_isroot( be, &op->o_ndn ) ) {
 209                         if ( be_issuffix( be, "" ) || be_isupdate( be, &op->o_ndn ) ) {
 210                                 p = (Entry *)&slap_entry_root;
 211
 212                                 rc = access_allowed( be, conn, op, p,
 213                                         children, NULL, ACL_WRITE );
 214                                 p = NULL;
 215
 216                                 if ( ! rc ) {
 217                                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 218
 219 #ifdef NEW_LOGGING
 220                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 221                                                 "ldbm_back_add: No write "
 222                                                 "access to parent (\"\").\n" ));
 223 #else
 224                                         Debug( LDAP_DEBUG_TRACE,
 225                                                 "no write access to parent\n",
 226                                                 0, 0, 0 );
 227 #endif
 228
 229                                         send_ldap_result( conn, op,
 230                                                 LDAP_INSUFFICIENT_ACCESS,
 231                                                 NULL,
 232                                                 "no write access to parent",
 233                                                 NULL, NULL );
 234
 235                                         return -1;
 236                                 }
 237
 238                         } else {
 239                                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 240
 241 #ifdef NEW_LOGGING
 242                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 243                                            "ldbm_back_add: %s add denied.\n",
 244                                            pdn.bv_val == NULL ? "suffix"
 245                                            : "entry at root" ));
 246 #else
 247                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 248                                                 pdn.bv_val == NULL ? "suffix"
 249                                                 : "entry at root", 0, 0 );
 250 #endif
 251
 252                                 send_ldap_result( conn, op,
 253                                                 LDAP_INSUFFICIENT_ACCESS,
 254                                                 NULL, NULL, NULL, NULL );
 255
 256                                 return -1;
 257                         }
 258                 }
 259
 260                 /*
 261                  * no parent, acquire the root write lock
 262                  * and release the add lock.
 263                  */
 264                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 265                 rootlock = 1;
 266                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 267         }
 268
 269         if ( next_id( be, &e->e_id ) ) {
 270                 if( p != NULL) {
 271                         /* free parent and writer lock */
 272                         cache_return_entry_w( &li->li_cache, p );
 273                 }
 274
 275                 if ( rootlock ) {
 276                         /* release root lock */
 277                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 278                 }
 279
 280 #ifdef NEW_LOGGING
 281                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 282                            "ldbm_back_add: next_id failed.\n" ));
 283 #else
 284                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 285                         0, 0, 0 );
 286 #endif
 287
 288
 289                 send_ldap_result( conn, op, LDAP_OTHER,
 290                         NULL, "next_id add failed", NULL, NULL );
 291
 292                 return( -1 );
 293         }
 294
 295         /*
 296          * Try to add the entry to the cache, assign it a new dnid.
 297          */
 298         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 299
 300         if ( rc != 0 ) {
 301                 if( p != NULL) {
 302                         /* free parent and writer lock */
 303                         cache_return_entry_w( &li->li_cache, p );
 304                 }
 305
 306                 if ( rootlock ) {
 307                         /* release root lock */
 308                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 309                 }
 310
 311 #ifdef NEW_LOGGING
 312                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 313                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 314 #else
 315                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 316                     0 );
 317 #endif
 318
 319                 send_ldap_result( conn, op,
 320                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 321                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 322
 323                 return( -1 );
 324         }
 325
 326         rc = -1;
 327
 328         /* attribute indexes */
 329         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 330 #ifdef NEW_LOGGING
 331                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 332                            "ldbm_back_add: index_entry_add failed.\n" ));
 333 #else
 334                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 335                     0, 0 );
 336 #endif
 337
 338                 send_ldap_result( conn, op, LDAP_OTHER,
 339                         NULL, "index generation failed", NULL, NULL );
 340
 341                 goto return_results;
 342         }
 343
 344         /* dn2id index */
 345         if ( dn2id_add( be, &e->e_nname, e->e_id ) != 0 ) {
 346 #ifdef NEW_LOGGING
 347                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 348                            "ldbm_back_add: dn2id_add failed.\n" ));
 349 #else
 350                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 351                     0, 0 );
 352 #endif
 353                 /* FIXME: delete attr indices? */
 354
 355                 send_ldap_result( conn, op, LDAP_OTHER,
 356                         NULL, "DN index generation failed", NULL, NULL );
 357
 358                 goto return_results;
 359         }
 360
 361         /* id2entry index */
 362         if ( id2entry_add( be, e ) != 0 ) {
 363 #ifdef NEW_LOGGING
 364                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 365                            "ldbm_back_add: id2entry_add failed.\n" ));
 366 #else
 367                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 368                     0, 0 );
 369 #endif
 370
 371                 /* FIXME: delete attr indices? */
 372                 (void) dn2id_delete( be, &e->e_nname, e->e_id );
 373
 374                 send_ldap_result( conn, op, LDAP_OTHER,
 375                         NULL, "entry store failed", NULL, NULL );
 376
 377                 goto return_results;
 378         }
 379
 380         send_ldap_result( conn, op, LDAP_SUCCESS,
 381                 NULL, NULL, NULL, NULL );
 382
 383         /* marks the entry as committed, so it is added to the cache;
 384          * otherwise it is removed from the cache, but not destroyed;
 385          * it will be destroyed by the caller */
 386         rc = 0;
 387         cache_entry_commit( e );
 388
 389 return_results:;
 390         if (p != NULL) {
 391                 /* free parent and writer lock */
 392                 cache_return_entry_w( &li->li_cache, p );
 393         }
 394
 395         if ( rootlock ) {
 396                 /* release root lock */
 397                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 398         }
 399
 400         if ( rc ) {
 401                 /* in case of error, writer lock is freed
 402                  * and entry's private data is destroyed */
 403                 cache_return_entry_w( &li->li_cache, e );
 404         }
 405
 406         return( rc );
 407 }