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 1998-2000 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         char            *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_ndn, &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( 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 = dn_parent( be, e->e_ndn );
  84
  85         if( pdn != NULL && *pdn != '\0' ) {
  86                 Entry *matched = NULL;
  87
  88                 assert( *pdn != '\0' );
  89
  90                 /* get parent with writer lock */
  91                 if ( (p = dn2entry_w( be, pdn, &matched )) == NULL ) {
  92                         char *matched_dn = NULL;
  93                         struct berval **refs;
  94
  95                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  96
  97                         if ( matched != NULL ) {
  98                                 matched_dn = ch_strdup( matched->e_dn );
  99                                 refs = is_entry_referral( matched )
 100                                         ? get_entry_referrals( be, conn, op, matched )
 101                                         : NULL;
 102                                 cache_return_entry_r( &li->li_cache, matched );
 103
 104                         } else {
 105                                 refs = referral_rewrite( default_referral,
 106                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 107                         }
 108
 109 #ifdef NEW_LOGGING
 110                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 111                                 "ldbm_back_add: Parent of (%s) does not exist.\n",
 112                                 e->e_dn ));
 113 #else
 114                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 115                                 0, 0, 0 );
 116 #endif
 117
 118                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 119                                 refs == NULL ? "parent does not exist" : "parent is referral",
 120                                 refs, NULL );
 121
 122                         ber_bvecfree( refs );
 123                         free( matched_dn );
 124
 125                         return -1;
 126                 }
 127
 128                 /* don't need the add lock anymore */
 129                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 130
 131                 if ( ! access_allowed( be, conn, op, p,
 132                         children, NULL, ACL_WRITE ) )
 133                 {
 134                         /* free parent and writer lock */
 135                         cache_return_entry_w( &li->li_cache, p );
 136
 137 #ifdef NEW_LOGGING
 138                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 139                                    "ldbm_back_add: No write access to parent (%s).\n",
 140                                    e->e_dn ));
 141 #else
 142                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 143                             0, 0 );
 144 #endif
 145
 146                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 147                             NULL, "no write access to parent", NULL, NULL );
 148
 149
 150                         return -1;
 151                 }
 152
 153                 if ( is_entry_alias( p ) ) {
 154                         /* parent is an alias, don't allow add */
 155
 156                         /* free parent and writer lock */
 157                         cache_return_entry_w( &li->li_cache, p );
 158
 159 #ifdef NEW_LOGGING
 160                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 161                                    "ldbm_back_add:  Parent is an alias.\n"));
 162 #else
 163                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 164                             0, 0 );
 165 #endif
 166
 167
 168                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 169                             NULL, "parent is an alias", NULL, NULL );
 170
 171                         return -1;
 172                 }
 173
 174                 if ( is_entry_referral( p ) ) {
 175                         /* parent is a referral, don't allow add */
 176                         char *matched_dn = ch_strdup( p->e_dn );
 177                         struct berval **refs = is_entry_referral( p )
 178                                 ? get_entry_referrals( be, conn, op, p )
 179                                 : NULL;
 180
 181                         /* free parent and writer lock */
 182                         cache_return_entry_w( &li->li_cache, p );
 183
 184 #ifdef NEW_LOGGING
 185                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 186                                    "ldbm_back_add: Parent is referral.\n" ));
 187 #else
 188                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 189                             0, 0 );
 190 #endif
 191
 192                         send_ldap_result( conn, op, LDAP_REFERRAL,
 193                             matched_dn, NULL, refs, NULL );
 194
 195                         ber_bvecfree( refs );
 196                         free( matched_dn );
 197                         return -1;
 198                 }
 199
 200         } else {
 201                 if(pdn != NULL) {
 202                         assert( *pdn == '\0' );
 203                 }
 204
 205                 /* no parent, must be adding entry to root */
 206                 if ( !be_isroot( be, &op->o_ndn ) ) {
 207                         if ( be_issuffix( be, "" ) || be_isupdate( be, &op->o_ndn ) ) {
 208                                 p = (Entry *)&slap_entry_root;
 209
 210                                 rc = access_allowed( be, conn, op, p,
 211                                         children, NULL, ACL_WRITE );
 212                                 p = NULL;
 213
 214                                 if ( ! rc ) {
 215                                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 216
 217 #ifdef NEW_LOGGING
 218                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 219                                                 "ldbm_back_add: No write "
 220                                                 "access to parent (\"\").\n" ));
 221 #else
 222                                         Debug( LDAP_DEBUG_TRACE,
 223                                                 "no write access to parent\n",
 224                                                 0, 0, 0 );
 225 #endif
 226
 227                                         send_ldap_result( conn, op,
 228                                                 LDAP_INSUFFICIENT_ACCESS,
 229                                                 NULL,
 230                                                 "no write access to parent",
 231                                                 NULL, NULL );
 232
 233                                         return -1;
 234                                 }
 235
 236                         } else {
 237                                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 238
 239 #ifdef NEW_LOGGING
 240                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 241                                            "ldbm_back_add: %s add denied.\n",
 242                                            pdn == NULL ? "suffix"
 243                                            : "entry at root" ));
 244 #else
 245                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 246                                                 pdn == NULL ? "suffix"
 247                                                 : "entry at root", 0, 0 );
 248 #endif
 249
 250                                 send_ldap_result( conn, op,
 251                                                 LDAP_INSUFFICIENT_ACCESS,
 252                                                 NULL, NULL, NULL, NULL );
 253
 254                                 return -1;
 255                         }
 256                 }
 257
 258                 /*
 259                  * no parent, acquire the root write lock
 260                  * and release the add lock.
 261                  */
 262                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 263                 rootlock = 1;
 264                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 265         }
 266
 267         if ( next_id( be, &e->e_id ) ) {
 268                 if( p != NULL) {
 269                         /* free parent and writer lock */
 270                         cache_return_entry_w( &li->li_cache, p );
 271                 }
 272
 273                 if ( rootlock ) {
 274                         /* release root lock */
 275                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 276                 }
 277
 278 #ifdef NEW_LOGGING
 279                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 280                            "ldbm_back_add: next_id failed.\n" ));
 281 #else
 282                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 283                         0, 0, 0 );
 284 #endif
 285
 286
 287                 send_ldap_result( conn, op, LDAP_OTHER,
 288                         NULL, "next_id add failed", NULL, NULL );
 289
 290                 return( -1 );
 291         }
 292
 293         /*
 294          * Try to add the entry to the cache, assign it a new dnid.
 295          */
 296         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 297
 298         if ( rc != 0 ) {
 299                 if( p != NULL) {
 300                         /* free parent and writer lock */
 301                         cache_return_entry_w( &li->li_cache, p );
 302                 }
 303
 304                 if ( rootlock ) {
 305                         /* release root lock */
 306                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 307                 }
 308
 309 #ifdef NEW_LOGGING
 310                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 311                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 312 #else
 313                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 314                     0 );
 315 #endif
 316
 317                 send_ldap_result( conn, op,
 318                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 319                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 320
 321                 return( -1 );
 322         }
 323
 324         rc = -1;
 325
 326         /* attribute indexes */
 327         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 328 #ifdef NEW_LOGGING
 329                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 330                            "ldbm_back_add: index_entry_add failed.\n" ));
 331 #else
 332                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 333                     0, 0 );
 334 #endif
 335
 336                 send_ldap_result( conn, op, LDAP_OTHER,
 337                         NULL, "index generation failed", NULL, NULL );
 338
 339                 goto return_results;
 340         }
 341
 342         /* dn2id index */
 343         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 344 #ifdef NEW_LOGGING
 345                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 346                            "ldbm_back_add: dn2id_add failed.\n" ));
 347 #else
 348                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 349                     0, 0 );
 350 #endif
 351                 /* FIXME: delete attr indices? */
 352
 353                 send_ldap_result( conn, op, LDAP_OTHER,
 354                         NULL, "DN index generation failed", NULL, NULL );
 355
 356                 goto return_results;
 357         }
 358
 359         /* id2entry index */
 360         if ( id2entry_add( be, e ) != 0 ) {
 361 #ifdef NEW_LOGGING
 362                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 363                            "ldbm_back_add: id2entry_add failed.\n" ));
 364 #else
 365                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 366                     0, 0 );
 367 #endif
 368
 369                 /* FIXME: delete attr indices? */
 370                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 371
 372                 send_ldap_result( conn, op, LDAP_OTHER,
 373                         NULL, "entry store failed", NULL, NULL );
 374
 375                 goto return_results;
 376         }
 377
 378         send_ldap_result( conn, op, LDAP_SUCCESS,
 379                 NULL, NULL, NULL, NULL );
 380
 381         /* marks the entry as committed, so it is added to the cache;
 382          * otherwise it is removed from the cache, but not destroyed;
 383          * it will be destroyed by the caller */
 384         rc = 0;
 385         cache_entry_commit( e );
 386
 387 return_results:;
 388         if (p != NULL) {
 389                 /* free parent and writer lock */
 390                 cache_return_entry_w( &li->li_cache, p );
 391         }
 392
 393         if ( rootlock ) {
 394                 /* release root lock */
 395                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 396         }
 397
 398         if ( rc ) {
 399                 /* in case of error, writer lock is freed
 400                  * and entry's private data is destroyed */
 401                 cache_return_entry_w( &li->li_cache, e );
 402         }
 403
 404         return( rc );
 405 }