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