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         if ( be_issuffix( be, &e->e_nname ) ) {
  84                 pdn = slap_empty_bv;
  85         } else {
  86                 rc = dnParent( &e->e_nname, &pdn );
  87                 /* dnParent always returns success */
  88         }
  89
  90         if( pdn.bv_len ) {
  91                 Entry *matched = NULL;
  92
  93                 /* get parent with writer lock */
  94                 if ( (p = dn2entry_w( be, &pdn, &matched )) == NULL ) {
  95                         char *matched_dn = NULL;
  96                         BerVarray refs;
  97
  98                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  99
 100                         if ( matched != NULL ) {
 101                                 matched_dn = ch_strdup( matched->e_dn );
 102                                 refs = is_entry_referral( matched )
 103                                         ? get_entry_referrals( be, conn, op, matched )
 104                                         : NULL;
 105                                 cache_return_entry_r( &li->li_cache, matched );
 106
 107                         } else {
 108                                 refs = referral_rewrite( default_referral,
 109                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 110                         }
 111
 112 #ifdef NEW_LOGGING
 113                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 114                                 "ldbm_back_add: Parent of (%s) does not exist.\n",
 115                                 e->e_dn ));
 116 #else
 117                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 118                                 0, 0, 0 );
 119 #endif
 120
 121                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 122                                 refs == NULL ? "parent does not exist" : "parent is referral",
 123                                 refs, NULL );
 124
 125                         ber_bvarray_free( refs );
 126                         free( matched_dn );
 127
 128                         return -1;
 129                 }
 130
 131                 /* don't need the add lock anymore */
 132                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 133
 134                 if ( ! access_allowed( be, conn, op, p,
 135                         children, NULL, ACL_WRITE ) )
 136                 {
 137                         /* free parent and writer lock */
 138                         cache_return_entry_w( &li->li_cache, p );
 139
 140 #ifdef NEW_LOGGING
 141                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 142                                    "ldbm_back_add: No write access to parent (%s).\n",
 143                                    e->e_dn ));
 144 #else
 145                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 146                             0, 0 );
 147 #endif
 148
 149                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 150                             NULL, "no write access to parent", NULL, NULL );
 151
 152
 153                         return -1;
 154                 }
 155
 156                 if ( is_entry_alias( p ) ) {
 157                         /* parent is an alias, don't allow add */
 158
 159                         /* free parent and writer lock */
 160                         cache_return_entry_w( &li->li_cache, p );
 161
 162 #ifdef NEW_LOGGING
 163                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 164                                    "ldbm_back_add:  Parent is an alias.\n"));
 165 #else
 166                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 167                             0, 0 );
 168 #endif
 169
 170
 171                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 172                             NULL, "parent is an alias", NULL, NULL );
 173
 174                         return -1;
 175                 }
 176
 177                 if ( is_entry_referral( p ) ) {
 178                         /* parent is a referral, don't allow add */
 179                         char *matched_dn = ch_strdup( p->e_dn );
 180                         BerVarray refs = is_entry_referral( p )
 181                                 ? get_entry_referrals( be, conn, op, p )
 182                                 : NULL;
 183
 184                         /* free parent and writer lock */
 185                         cache_return_entry_w( &li->li_cache, p );
 186
 187 #ifdef NEW_LOGGING
 188                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 189                                    "ldbm_back_add: Parent is referral.\n" ));
 190 #else
 191                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 192                             0, 0 );
 193 #endif
 194
 195                         send_ldap_result( conn, op, LDAP_REFERRAL,
 196                             matched_dn, NULL, refs, NULL );
 197
 198                         ber_bvarray_free( refs );
 199                         free( matched_dn );
 200                         return -1;
 201                 }
 202
 203         } else {
 204                 if(pdn.bv_val != NULL) {
 205                         assert( *pdn.bv_val == '\0' );
 206                 }
 207
 208                 /* no parent, must be adding entry to root */
 209                 if ( !be_isroot( be, &op->o_ndn ) ) {
 210                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
 211                                 p = (Entry *)&slap_entry_root;
 212
 213                                 rc = access_allowed( be, conn, op, p,
 214                                         children, NULL, ACL_WRITE );
 215                                 p = NULL;
 216
 217                                 if ( ! rc ) {
 218                                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 219
 220 #ifdef NEW_LOGGING
 221                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 222                                                 "ldbm_back_add: No write "
 223                                                 "access to parent (\"\").\n" ));
 224 #else
 225                                         Debug( LDAP_DEBUG_TRACE,
 226                                                 "no write access to parent\n",
 227                                                 0, 0, 0 );
 228 #endif
 229
 230                                         send_ldap_result( conn, op,
 231                                                 LDAP_INSUFFICIENT_ACCESS,
 232                                                 NULL,
 233                                                 "no write access to parent",
 234                                                 NULL, NULL );
 235
 236                                         return -1;
 237                                 }
 238
 239                         } else {
 240                                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 241
 242 #ifdef NEW_LOGGING
 243                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 244                                            "ldbm_back_add: %s add denied.\n",
 245                                            pdn.bv_val == NULL ? "suffix"
 246                                            : "entry at root" ));
 247 #else
 248                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 249                                                 pdn.bv_val == NULL ? "suffix"
 250                                                 : "entry at root", 0, 0 );
 251 #endif
 252
 253                                 send_ldap_result( conn, op,
 254                                                 LDAP_INSUFFICIENT_ACCESS,
 255                                                 NULL, NULL, NULL, NULL );
 256
 257                                 return -1;
 258                         }
 259                 }
 260
 261                 /*
 262                  * no parent, acquire the root write lock
 263                  * and release the add lock.
 264                  */
 265                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 266                 rootlock = 1;
 267                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 268         }
 269
 270         if ( next_id( be, &e->e_id ) ) {
 271                 if( p != NULL) {
 272                         /* free parent and writer lock */
 273                         cache_return_entry_w( &li->li_cache, p );
 274                 }
 275
 276                 if ( rootlock ) {
 277                         /* release root lock */
 278                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 279                 }
 280
 281 #ifdef NEW_LOGGING
 282                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 283                            "ldbm_back_add: next_id failed.\n" ));
 284 #else
 285                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 286                         0, 0, 0 );
 287 #endif
 288
 289
 290                 send_ldap_result( conn, op, LDAP_OTHER,
 291                         NULL, "next_id add failed", NULL, NULL );
 292
 293                 return( -1 );
 294         }
 295
 296         /*
 297          * Try to add the entry to the cache, assign it a new dnid.
 298          */
 299         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 300
 301         if ( rc != 0 ) {
 302                 if( p != NULL) {
 303                         /* free parent and writer lock */
 304                         cache_return_entry_w( &li->li_cache, p );
 305                 }
 306
 307                 if ( rootlock ) {
 308                         /* release root lock */
 309                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 310                 }
 311
 312 #ifdef NEW_LOGGING
 313                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 314                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 315 #else
 316                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 317                     0 );
 318 #endif
 319
 320                 send_ldap_result( conn, op,
 321                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 322                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 323
 324                 return( -1 );
 325         }
 326
 327         rc = -1;
 328
 329         /* attribute indexes */
 330         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 331 #ifdef NEW_LOGGING
 332                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 333                            "ldbm_back_add: index_entry_add failed.\n" ));
 334 #else
 335                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 336                     0, 0 );
 337 #endif
 338
 339                 send_ldap_result( conn, op, LDAP_OTHER,
 340                         NULL, "index generation failed", NULL, NULL );
 341
 342                 goto return_results;
 343         }
 344
 345         /* dn2id index */
 346         if ( dn2id_add( be, &e->e_nname, e->e_id ) != 0 ) {
 347 #ifdef NEW_LOGGING
 348                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 349                            "ldbm_back_add: dn2id_add failed.\n" ));
 350 #else
 351                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 352                     0, 0 );
 353 #endif
 354                 /* FIXME: delete attr indices? */
 355
 356                 send_ldap_result( conn, op, LDAP_OTHER,
 357                         NULL, "DN index generation failed", NULL, NULL );
 358
 359                 goto return_results;
 360         }
 361
 362         /* id2entry index */
 363         if ( id2entry_add( be, e ) != 0 ) {
 364 #ifdef NEW_LOGGING
 365                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 366                            "ldbm_back_add: id2entry_add failed.\n" ));
 367 #else
 368                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 369                     0, 0 );
 370 #endif
 371
 372                 /* FIXME: delete attr indices? */
 373                 (void) dn2id_delete( be, &e->e_nname, e->e_id );
 374
 375                 send_ldap_result( conn, op, LDAP_OTHER,
 376                         NULL, "entry store failed", NULL, NULL );
 377
 378                 goto return_results;
 379         }
 380
 381         send_ldap_result( conn, op, LDAP_SUCCESS,
 382                 NULL, NULL, NULL, NULL );
 383
 384         /* marks the entry as committed, so it is added to the cache;
 385          * otherwise it is removed from the cache, but not destroyed;
 386          * it will be destroyed by the caller */
 387         rc = 0;
 388         cache_entry_commit( e );
 389
 390 return_results:;
 391         if (p != NULL) {
 392                 /* free parent and writer lock */
 393                 cache_return_entry_w( &li->li_cache, p );
 394         }
 395
 396         if ( rootlock ) {
 397                 /* release root lock */
 398                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 399         }
 400
 401         if ( rc ) {
 402                 /* in case of error, writer lock is freed
 403                  * and entry's private data is destroyed */
 404                 cache_return_entry_w( &li->li_cache, e );
 405         }
 406
 407         return( rc );
 408 }