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                                                 e->e_dn, LDAP_SCOPE_DEFAULT )
 102                                         : NULL;
 103                                 cache_return_entry_r( &li->li_cache, matched );
 104
 105                         } else {
 106                                 refs = referral_rewrite( default_referral,
 107                                         NULL, e->e_dn, LDAP_SCOPE_DEFAULT );
 108                         }
 109
 110 #ifdef NEW_LOGGING
 111                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 112                                 "ldbm_back_add: Parent of (%s) does not exist.\n",
 113                                 e->e_dn ));
 114 #else
 115                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 116                                 0, 0, 0 );
 117 #endif
 118
 119                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 120                                 refs == NULL ? "parent does not exist" : "parent is referral",
 121                                 refs, NULL );
 122
 123                         ber_bvecfree( refs );
 124                         free( matched_dn );
 125
 126                         free( pdn );
 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                 free(pdn);
 134
 135                 if ( ! access_allowed( be, conn, op, p,
 136                         children, NULL, ACL_WRITE ) )
 137                 {
 138                         /* free parent and writer lock */
 139                         cache_return_entry_w( &li->li_cache, p );
 140
 141 #ifdef NEW_LOGGING
 142                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 143                                    "ldbm_back_add: No write access to parent (%s).\n",
 144                                    e->e_dn ));
 145 #else
 146                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 147                             0, 0 );
 148 #endif
 149
 150                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 151                             NULL, "no write access to parent", NULL, NULL );
 152
 153
 154                         return -1;
 155                 }
 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
 163 #ifdef NEW_LOGGING
 164                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 165                                    "ldbm_back_add:  Parent is an alias.\n"));
 166 #else
 167                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 168                             0, 0 );
 169 #endif
 170
 171
 172                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 173                             NULL, "parent is an alias", NULL, NULL );
 174
 175                         return -1;
 176                 }
 177
 178                 if ( is_entry_referral( p ) ) {
 179                         /* parent is a referral, don't allow add */
 180                         char *matched_dn = ch_strdup( p->e_dn );
 181                         struct berval **refs = is_entry_referral( p )
 182                                 ? get_entry_referrals( be, conn, op, p,
 183                                         e->e_dn, LDAP_SCOPE_DEFAULT )
 184                                 : NULL;
 185
 186                         /* free parent and writer lock */
 187                         cache_return_entry_w( &li->li_cache, p );
 188
 189 #ifdef NEW_LOGGING
 190                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 191                                    "ldbm_back_add: Parent is referral.\n" ));
 192 #else
 193                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 194                             0, 0 );
 195 #endif
 196
 197                         send_ldap_result( conn, op, LDAP_REFERRAL,
 198                             matched_dn, NULL, refs, NULL );
 199
 200                         ber_bvecfree( refs );
 201                         free( matched_dn );
 202                         return -1;
 203                 }
 204
 205         } else {
 206                 if(pdn != NULL) {
 207                         assert( *pdn == '\0' );
 208                         free(pdn);
 209                 }
 210
 211                 /* no parent, must be adding entry to root */
 212                 if ( !be_isroot( be, op->o_ndn ) ) {
 213                         if ( be_issuffix( be, "" ) ) {
 214                                 static const Entry rootp = { NOID, "", "", NULL, NULL };
 215                                 p = (Entry *)&rootp;
 216
 217                                 rc = access_allowed( be, conn, op, p,
 218                                         children, NULL, ACL_WRITE );
 219                                 p = NULL;
 220
 221                                 if ( ! rc ) {
 222                                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 223
 224 #ifdef NEW_LOGGING
 225                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 226                                                 "ldbm_back_add: No write "
 227                                                 "access to parent (\"\").\n" ));
 228 #else
 229                                         Debug( LDAP_DEBUG_TRACE,
 230                                                 "no write access to parent\n",
 231                                                 0, 0, 0 );
 232 #endif
 233
 234                                         send_ldap_result( conn, op,
 235                                                 LDAP_INSUFFICIENT_ACCESS,
 236                                                 NULL,
 237                                                 "no write access to parent",
 238                                                 NULL, NULL );
 239
 240                                         return -1;
 241                                 }
 242
 243                         } else {
 244                                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 245
 246 #ifdef NEW_LOGGING
 247                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 248                                            "ldbm_back_add: %s add denied.\n",
 249                                            pdn == NULL ? "suffix"
 250                                            : "entry at root" ));
 251 #else
 252                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 253                                                 pdn == NULL ? "suffix"
 254                                                 : "entry at root", 0, 0 );
 255 #endif
 256
 257                                 send_ldap_result( conn, op,
 258                                                 LDAP_INSUFFICIENT_ACCESS,
 259                                                 NULL, NULL, NULL, NULL );
 260
 261                                 return -1;
 262                         }
 263                 }
 264
 265                 /*
 266                  * no parent, acquire the root write lock
 267                  * and release the add lock.
 268                  */
 269                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 270                 rootlock = 1;
 271                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 272         }
 273
 274         if ( next_id( be, &e->e_id ) ) {
 275                 if( p != NULL) {
 276                         /* free parent and writer lock */
 277                         cache_return_entry_w( &li->li_cache, p );
 278                 }
 279
 280                 if ( rootlock ) {
 281                         /* release root lock */
 282                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 283                 }
 284
 285 #ifdef NEW_LOGGING
 286                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 287                            "ldbm_back_add: next_id failed.\n" ));
 288 #else
 289                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 290                         0, 0, 0 );
 291 #endif
 292
 293
 294                 send_ldap_result( conn, op, LDAP_OTHER,
 295                         NULL, "next_id add failed", NULL, NULL );
 296
 297                 return( -1 );
 298         }
 299
 300         /*
 301          * Try to add the entry to the cache, assign it a new dnid.
 302          */
 303         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 304
 305         if ( rc != 0 ) {
 306                 if( p != NULL) {
 307                         /* free parent and writer lock */
 308                         cache_return_entry_w( &li->li_cache, p );
 309                 }
 310
 311                 if ( rootlock ) {
 312                         /* release root lock */
 313                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 314                 }
 315
 316 #ifdef NEW_LOGGING
 317                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 318                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 319 #else
 320                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 321                     0 );
 322 #endif
 323
 324                 send_ldap_result( conn, op,
 325                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 326                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 327
 328                 return( -1 );
 329         }
 330
 331         rc = -1;
 332
 333         /* attribute indexes */
 334         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 335 #ifdef NEW_LOGGING
 336                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 337                            "ldbm_back_add: index_entry_add failed.\n" ));
 338 #else
 339                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 340                     0, 0 );
 341 #endif
 342
 343                 send_ldap_result( conn, op, LDAP_OTHER,
 344                         NULL, "index generation failed", NULL, NULL );
 345
 346                 goto return_results;
 347         }
 348
 349         /* dn2id index */
 350         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 351 #ifdef NEW_LOGGING
 352                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 353                            "ldbm_back_add: dn2id_add failed.\n" ));
 354 #else
 355                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 356                     0, 0 );
 357 #endif
 358                 /* FIXME: delete attr indices? */
 359
 360                 send_ldap_result( conn, op, LDAP_OTHER,
 361                         NULL, "DN index generation failed", NULL, NULL );
 362
 363                 goto return_results;
 364         }
 365
 366         /* id2entry index */
 367         if ( id2entry_add( be, e ) != 0 ) {
 368 #ifdef NEW_LOGGING
 369                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 370                            "ldbm_back_add: id2entry_add failed.\n" ));
 371 #else
 372                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 373                     0, 0 );
 374 #endif
 375
 376                 /* FIXME: delete attr indices? */
 377                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 378
 379                 send_ldap_result( conn, op, LDAP_OTHER,
 380                         NULL, "entry store failed", NULL, NULL );
 381
 382                 goto return_results;
 383         }
 384
 385         send_ldap_result( conn, op, LDAP_SUCCESS,
 386                 NULL, NULL, NULL, NULL );
 387
 388         /* marks the entry as committed, so it is added to the cache;
 389          * otherwise it is removed from the cache, but not destroyed;
 390          * it will be destroyed by the caller */
 391         rc = 0;
 392         cache_entry_commit( e );
 393
 394 return_results:;
 395         if (p != NULL) {
 396                 /* free parent and writer lock */
 397                 cache_return_entry_w( &li->li_cache, p );
 398         }
 399
 400         if ( rootlock ) {
 401                 /* release root lock */
 402                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 403         }
 404
 405         if ( rc ) {
 406                 /* in case of error, writer lock is freed
 407                  * and entry's private data is destroyed */
 408                 cache_return_entry_w( &li->li_cache, e );
 409         }
 410
 411         return( rc );
 412 }