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