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 1998-2003 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                     rc;
  31         ID               id = NOID;
  32         const char      *text = NULL;
  33         AttributeDescription *children = slap_schema.si_ad_children;
  34         AttributeDescription *entry = slap_schema.si_ad_entry;
  35         char textbuf[SLAP_TEXT_BUFLEN];
  36         size_t textlen = sizeof textbuf;
  37
  38 #ifdef NEW_LOGGING
  39         LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_add: %s\n", e->e_dn, 0, 0 );
  40 #else
  41         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", e->e_dn, 0, 0);
  42 #endif
  43
  44         rc = entry_schema_check( be, e, NULL, &text, textbuf, textlen );
  45         if ( rc != LDAP_SUCCESS ) {
  46 #ifdef NEW_LOGGING
  47                 LDAP_LOG( BACK_LDBM, ERR,
  48                         "ldbm_back_add: entry (%s) failed schema check.\n", e->e_dn, 0, 0 );
  49 #else
  50                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  51                         text, 0, 0 );
  52 #endif
  53
  54                 send_ldap_result( conn, op, rc,
  55                         NULL, text, NULL, NULL );
  56                 return( -1 );
  57         }
  58
  59         if ( ! access_allowed( be, conn, op, e,
  60                 entry, NULL, ACL_WRITE, NULL ) )
  61         {
  62 #ifdef NEW_LOGGING
  63                 LDAP_LOG( BACK_LDBM, ERR,
  64                         "ldbm_back_add: No write access to entry (%s).\n",
  65                         e->e_dn, 0, 0 );
  66 #else
  67                 Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
  68                     0, 0 );
  69 #endif
  70
  71                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  72                     NULL, "no write access to entry", NULL, NULL );
  73
  74                 return -1;
  75         }
  76
  77         /* grab giant lock for writing */
  78         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  79
  80         if ( ( rc = dn2id( be, &e->e_nname, &id ) ) || id != NOID ) {
  81                 /* if (rc) something bad happened to ldbm cache */
  82                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  83                 send_ldap_result( conn, op,
  84                         rc ? LDAP_OTHER : LDAP_ALREADY_EXISTS,
  85                         NULL, NULL, NULL, NULL );
  86                 return( -1 );
  87         }
  88
  89         /*
  90          * Get the parent dn and see if the corresponding entry exists.
  91          * If the parent does not exist, only allow the "root" user to
  92          * add the entry.
  93          */
  94
  95         if ( be_issuffix( be, &e->e_nname ) ) {
  96                 pdn = slap_empty_bv;
  97         } else {
  98                 dnParent( &e->e_nname, &pdn );
  99         }
 100
 101         if( pdn.bv_len ) {
 102                 Entry *matched = NULL;
 103
 104                 /* get parent with writer lock */
 105                 if ( (p = dn2entry_w( be, &pdn, &matched )) == NULL ) {
 106                         char *matched_dn = NULL;
 107                         BerVarray refs;
 108
 109                         if ( matched != NULL ) {
 110                                 matched_dn = ch_strdup( matched->e_dn );
 111                                 refs = is_entry_referral( matched )
 112                                         ? get_entry_referrals( be, conn, op, matched )
 113                                         : NULL;
 114                                 cache_return_entry_r( &li->li_cache, matched );
 115
 116                         } else {
 117                                 refs = referral_rewrite( default_referral,
 118                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 119                         }
 120
 121                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 122
 123 #ifdef NEW_LOGGING
 124                         LDAP_LOG( BACK_LDBM, ERR,
 125                                 "ldbm_back_add: Parent of (%s) does not exist.\n",
 126                                 e->e_dn, 0, 0 );
 127 #else
 128                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 129                                 0, 0, 0 );
 130 #endif
 131
 132                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 133                                 refs == NULL ? "parent does not exist" : "parent is referral",
 134                                 refs, NULL );
 135
 136                         ber_bvarray_free( refs );
 137                         free( matched_dn );
 138
 139                         return -1;
 140                 }
 141
 142                 if ( ! access_allowed( be, conn, op, p,
 143                         children, NULL, ACL_WRITE, NULL ) )
 144                 {
 145                         /* free parent and writer lock */
 146                         cache_return_entry_w( &li->li_cache, p );
 147                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 148
 149 #ifdef NEW_LOGGING
 150                         LDAP_LOG( BACK_LDBM, ERR,
 151                                 "ldbm_back_add: No write access to parent (%s).\n",
 152                                 e->e_dn, 0, 0 );
 153 #else
 154                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 155                             0, 0 );
 156 #endif
 157
 158                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 159                             NULL, "no write access to parent", NULL, NULL );
 160
 161                         return -1;
 162                 }
 163
 164                 if ( is_entry_alias( p ) ) {
 165                         /* parent is an alias, don't allow add */
 166
 167                         /* free parent and writer lock */
 168                         cache_return_entry_w( &li->li_cache, p );
 169                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 170
 171 #ifdef NEW_LOGGING
 172                         LDAP_LOG(BACK_LDBM, ERR,
 173                                 "ldbm_back_add:  Parent is an alias.\n", 0, 0, 0 );
 174 #else
 175                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 176                             0, 0 );
 177 #endif
 178
 179
 180                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 181                             NULL, "parent is an alias", NULL, NULL );
 182
 183                         return -1;
 184                 }
 185
 186                 if ( is_entry_referral( p ) ) {
 187                         /* parent is a referral, don't allow add */
 188                         char *matched_dn = ch_strdup( p->e_dn );
 189                         BerVarray refs = is_entry_referral( p )
 190                                 ? get_entry_referrals( be, conn, op, p )
 191                                 : NULL;
 192
 193                         /* free parent and writer lock */
 194                         cache_return_entry_w( &li->li_cache, p );
 195                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 196
 197 #ifdef NEW_LOGGING
 198                         LDAP_LOG( BACK_LDBM, ERR,
 199                                    "ldbm_back_add: Parent is referral.\n", 0, 0, 0 );
 200 #else
 201                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 202                             0, 0 );
 203 #endif
 204
 205                         send_ldap_result( conn, op, LDAP_REFERRAL,
 206                             matched_dn, NULL, refs, NULL );
 207
 208                         ber_bvarray_free( refs );
 209                         free( matched_dn );
 210                         return -1;
 211                 }
 212
 213         } else {
 214                 if(pdn.bv_val != NULL) {
 215                         assert( *pdn.bv_val == '\0' );
 216                 }
 217
 218                 /* no parent, must be adding entry to root */
 219                 if ( !be_isroot( be, &op->o_ndn ) ) {
 220                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
 221                                 p = (Entry *)&slap_entry_root;
 222
 223                                 rc = access_allowed( be, conn, op, p,
 224                                         children, NULL, ACL_WRITE, NULL );
 225                                 p = NULL;
 226
 227                                 if ( ! rc ) {
 228                                         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 229
 230 #ifdef NEW_LOGGING
 231                                         LDAP_LOG( BACK_LDBM, ERR,
 232                                                 "ldbm_back_add: No write "
 233                                                 "access to parent (\"\").\n", 0, 0, 0 );
 234 #else
 235                                         Debug( LDAP_DEBUG_TRACE,
 236                                                 "no write access to parent\n",
 237                                                 0, 0, 0 );
 238 #endif
 239
 240                                         send_ldap_result( conn, op,
 241                                                 LDAP_INSUFFICIENT_ACCESS,
 242                                                 NULL,
 243                                                 "no write access to parent",
 244                                                 NULL, NULL );
 245
 246                                         return -1;
 247                                 }
 248
 249                         } else {
 250                                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 251
 252 #ifdef NEW_LOGGING
 253                                 LDAP_LOG( BACK_LDBM, ERR,
 254                                            "ldbm_back_add: %s add denied.\n",
 255                                            pdn.bv_val == NULL ? "suffix"
 256                                            : "entry at root", 0, 0 );
 257 #else
 258                                 Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 259                                                 pdn.bv_val == NULL ? "suffix"
 260                                                 : "entry at root", 0, 0 );
 261 #endif
 262
 263                                 send_ldap_result( conn, op,
 264                                                 LDAP_INSUFFICIENT_ACCESS,
 265                                                 NULL, NULL, NULL, NULL );
 266
 267                                 return -1;
 268                         }
 269                 }
 270         }
 271
 272         if ( next_id( be, &e->e_id ) ) {
 273                 if( p != NULL) {
 274                         /* free parent and writer lock */
 275                         cache_return_entry_w( &li->li_cache, p );
 276                 }
 277
 278                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 279
 280 #ifdef NEW_LOGGING
 281                 LDAP_LOG( BACK_LDBM, ERR,
 282                         "ldbm_back_add: next_id failed.\n", 0, 0, 0 );
 283 #else
 284                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 285                         0, 0, 0 );
 286 #endif
 287
 288                 send_ldap_result( conn, op, LDAP_OTHER,
 289                         NULL, "next_id add failed", NULL, NULL );
 290
 291                 return( -1 );
 292         }
 293
 294         /*
 295          * Try to add the entry to the cache, assign it a new dnid.
 296          */
 297         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 298
 299         if ( rc != 0 ) {
 300                 if( p != NULL) {
 301                         /* free parent and writer lock */
 302                         cache_return_entry_w( &li->li_cache, p );
 303                 }
 304
 305                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 306
 307 #ifdef NEW_LOGGING
 308                 LDAP_LOG( BACK_LDBM, ERR,
 309                         "ldbm_back_add: cache_add_entry_lock failed.\n", 0, 0, 0 );
 310 #else
 311                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 312                     0 );
 313 #endif
 314
 315                 send_ldap_result( conn, op,
 316                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 317                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 318
 319                 return( -1 );
 320         }
 321
 322         rc = -1;
 323
 324         /* attribute indexes */
 325         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 326 #ifdef NEW_LOGGING
 327                 LDAP_LOG( BACK_LDBM, ERR,
 328                         "ldbm_back_add: index_entry_add failed.\n", 0, 0, 0 );
 329 #else
 330                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 331                     0, 0 );
 332 #endif
 333
 334                 send_ldap_result( conn, op, LDAP_OTHER,
 335                         NULL, "index generation failed", NULL, NULL );
 336
 337                 goto return_results;
 338         }
 339
 340         /* dn2id index */
 341         if ( dn2id_add( be, &e->e_nname, e->e_id ) != 0 ) {
 342 #ifdef NEW_LOGGING
 343                 LDAP_LOG( BACK_LDBM, ERR,
 344                         "ldbm_back_add: dn2id_add failed.\n", 0, 0, 0 );
 345 #else
 346                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 347                     0, 0 );
 348 #endif
 349                 /* FIXME: delete attr indices? */
 350
 351                 send_ldap_result( conn, op, LDAP_OTHER,
 352                         NULL, "DN index generation failed", NULL, NULL );
 353
 354                 goto return_results;
 355         }
 356
 357         /* id2entry index */
 358         if ( id2entry_add( be, e ) != 0 ) {
 359 #ifdef NEW_LOGGING
 360                 LDAP_LOG( BACK_LDBM, ERR,
 361                            "ldbm_back_add: id2entry_add failed.\n", 0, 0, 0 );
 362 #else
 363                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 364                     0, 0 );
 365 #endif
 366
 367                 /* FIXME: delete attr indices? */
 368                 (void) dn2id_delete( be, &e->e_nname, e->e_id );
 369
 370                 send_ldap_result( conn, op, LDAP_OTHER,
 371                         NULL, "entry store failed", NULL, NULL );
 372
 373                 goto return_results;
 374         }
 375
 376         send_ldap_result( conn, op, LDAP_SUCCESS,
 377                 NULL, NULL, NULL, NULL );
 378
 379         /* marks the entry as committed, so it is added to the cache;
 380          * otherwise it is removed from the cache, but not destroyed;
 381          * it will be destroyed by the caller */
 382         rc = 0;
 383         cache_entry_commit( e );
 384
 385 return_results:;
 386         if (p != NULL) {
 387                 /* free parent and writer lock */
 388                 cache_return_entry_w( &li->li_cache, p );
 389         }
 390
 391         if ( rc ) {
 392                 /*
 393                  * in case of error, writer lock is freed
 394                  * and entry's private data is destroyed.
 395                  * otherwise, this is done when entry is released
 396                  */
 397                 cache_return_entry_w( &li->li_cache, e );
 398                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 399         }
 400
 401         return( rc );
 402 }