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                                         || be_isupdate( be, op->o_ndn ) ) {
 215                                 static const Entry rootp = { NOID, "", "", NULL, NULL };
 216                                 p = (Entry *)&rootp;
 217
 218                                 rc = access_allowed( be, conn, op, p,
 219                                         children, NULL, ACL_WRITE );
 220                                 p = NULL;
 221
 222                                 if ( ! rc ) {
 223                                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 224
 225 #ifdef NEW_LOGGING
 226                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 227                                                 "ldbm_back_add: No write "
 228                                                 "access to parent (\"\").\n" ));
 229 #else
 230                                         Debug( LDAP_DEBUG_TRACE,
 231                                                 "no write access to parent\n",
 232                                                 0, 0, 0 );
 233 #endif
 234
 235                                         send_ldap_result( conn, op,
 236                                                 LDAP_INSUFFICIENT_ACCESS,
 237                                                 NULL,
 238                                                 "no write access to parent",
 239                                                 NULL, NULL );
 240
 241                                         return -1;
 242                                 }
 243
 244                         } else {
 245                                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 246
 247 #ifdef NEW_LOGGING
 248                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 249                                            "ldbm_back_add: %s add denied.\n",
 250                                            pdn == NULL ? "suffix"
 251                                            : "entry at root" ));
 252 #else
 253                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 254                                                 pdn == NULL ? "suffix"
 255                                                 : "entry at root", 0, 0 );
 256 #endif
 257
 258                                 send_ldap_result( conn, op,
 259                                                 LDAP_INSUFFICIENT_ACCESS,
 260                                                 NULL, NULL, NULL, NULL );
 261
 262                                 return -1;
 263                         }
 264                 }
 265
 266                 /*
 267                  * no parent, acquire the root write lock
 268                  * and release the add lock.
 269                  */
 270                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 271                 rootlock = 1;
 272                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 273         }
 274
 275         if ( next_id( be, &e->e_id ) ) {
 276                 if( p != NULL) {
 277                         /* free parent and writer lock */
 278                         cache_return_entry_w( &li->li_cache, p );
 279                 }
 280
 281                 if ( rootlock ) {
 282                         /* release root lock */
 283                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 284                 }
 285
 286 #ifdef NEW_LOGGING
 287                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 288                            "ldbm_back_add: next_id failed.\n" ));
 289 #else
 290                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 291                         0, 0, 0 );
 292 #endif
 293
 294
 295                 send_ldap_result( conn, op, LDAP_OTHER,
 296                         NULL, "next_id add failed", NULL, NULL );
 297
 298                 return( -1 );
 299         }
 300
 301         /*
 302          * Try to add the entry to the cache, assign it a new dnid.
 303          */
 304         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 305
 306         if ( rc != 0 ) {
 307                 if( p != NULL) {
 308                         /* free parent and writer lock */
 309                         cache_return_entry_w( &li->li_cache, p );
 310                 }
 311
 312                 if ( rootlock ) {
 313                         /* release root lock */
 314                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 315                 }
 316
 317 #ifdef NEW_LOGGING
 318                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 319                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 320 #else
 321                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 322                     0 );
 323 #endif
 324
 325                 send_ldap_result( conn, op,
 326                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 327                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 328
 329                 return( -1 );
 330         }
 331
 332         rc = -1;
 333
 334         /* attribute indexes */
 335         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 336 #ifdef NEW_LOGGING
 337                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 338                            "ldbm_back_add: index_entry_add failed.\n" ));
 339 #else
 340                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 341                     0, 0 );
 342 #endif
 343
 344                 send_ldap_result( conn, op, LDAP_OTHER,
 345                         NULL, "index generation failed", NULL, NULL );
 346
 347                 goto return_results;
 348         }
 349
 350         /* dn2id index */
 351         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 352 #ifdef NEW_LOGGING
 353                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 354                            "ldbm_back_add: dn2id_add failed.\n" ));
 355 #else
 356                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 357                     0, 0 );
 358 #endif
 359                 /* FIXME: delete attr indices? */
 360
 361                 send_ldap_result( conn, op, LDAP_OTHER,
 362                         NULL, "DN index generation failed", NULL, NULL );
 363
 364                 goto return_results;
 365         }
 366
 367         /* id2entry index */
 368         if ( id2entry_add( be, e ) != 0 ) {
 369 #ifdef NEW_LOGGING
 370                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 371                            "ldbm_back_add: id2entry_add failed.\n" ));
 372 #else
 373                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 374                     0, 0 );
 375 #endif
 376
 377                 /* FIXME: delete attr indices? */
 378                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 379
 380                 send_ldap_result( conn, op, LDAP_OTHER,
 381                         NULL, "entry store failed", NULL, NULL );
 382
 383                 goto return_results;
 384         }
 385
 386         send_ldap_result( conn, op, LDAP_SUCCESS,
 387                 NULL, NULL, NULL, NULL );
 388
 389         /* marks the entry as committed, so it is added to the cache;
 390          * otherwise it is removed from the cache, but not destroyed;
 391          * it will be destroyed by the caller */
 392         rc = 0;
 393         cache_entry_commit( e );
 394
 395 return_results:;
 396         if (p != NULL) {
 397                 /* free parent and writer lock */
 398                 cache_return_entry_w( &li->li_cache, p );
 399         }
 400
 401         if ( rootlock ) {
 402                 /* release root lock */
 403                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 404         }
 405
 406         if ( rc ) {
 407                 /* in case of error, writer lock is freed
 408                  * and entry's private data is destroyed */
 409                 cache_return_entry_w( &li->li_cache, e );
 410         }
 411
 412         return( rc );
 413 }