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, rc_id;
  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
  45         /* nobody else can add until we lock our parent */
  46         ldap_pvt_thread_mutex_lock(&li->li_add_mutex);
  47
  48         if ( ( dn2id( be, e->e_ndn, &rc_id ) ) != NOID || rc_id ) {
  49                 /* if (rc_id) something bad happened to ldbm cache */
  50                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  51                 send_ldap_result( conn, op,
  52                         rc_id ? 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;
  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                                         : NULL;
 102                                 cache_return_entry_r( &li->li_cache, matched );
 103
 104                         } else {
 105                                 matched_dn = NULL;
 106                                 refs = default_referral;
 107                         }
 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
 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                         if( matched != NULL ) {
 124                                 ber_bvecfree( refs );
 125                                 free( matched_dn );
 126                         }
 127
 128                         free( pdn );
 129                         return -1;
 130                 }
 131
 132                 /* don't need the add lock anymore */
 133                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 134
 135                 free(pdn);
 136
 137                 if ( ! access_allowed( be, conn, op, p,
 138                         children, NULL, ACL_WRITE ) )
 139                 {
 140                         /* free parent and writer lock */
 141                         cache_return_entry_w( &li->li_cache, p );
 142
 143 #ifdef NEW_LOGGING
 144                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 145                                    "ldbm_back_add: No write access to parent (%s).\n",
 146                                    e->e_dn ));
 147 #else
 148                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 149                             0, 0 );
 150 #endif
 151
 152                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 153                             NULL, "no write access to parent", NULL, NULL );
 154
 155
 156                         return -1;
 157                 }
 158
 159                 if ( is_entry_alias( p ) ) {
 160                         /* parent is an alias, don't allow add */
 161
 162                         /* free parent and writer lock */
 163                         cache_return_entry_w( &li->li_cache, p );
 164
 165 #ifdef NEW_LOGGING
 166                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 167                                    "ldbm_back_add:  Parent is an alias.\n"));
 168 #else
 169                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 170                             0, 0 );
 171 #endif
 172
 173
 174                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 175                             NULL, "parent is an alias", NULL, NULL );
 176
 177                         return -1;
 178                 }
 179
 180                 if ( is_entry_referral( p ) ) {
 181                         /* parent is a referral, don't allow add */
 182                         char *matched_dn = ch_strdup( p->e_dn );
 183                         struct berval **refs = is_entry_referral( p )
 184                                 ? get_entry_referrals( be, conn, op, p )
 185                                 : NULL;
 186
 187                         /* free parent and writer lock */
 188                         cache_return_entry_w( &li->li_cache, p );
 189
 190 #ifdef NEW_LOGGING
 191                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 192                                    "ldbm_back_add: Parent is referral.\n" ));
 193 #else
 194                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 195                             0, 0 );
 196 #endif
 197
 198                         send_ldap_result( conn, op, LDAP_REFERRAL,
 199                             matched_dn, NULL, refs, NULL );
 200
 201                         ber_bvecfree( refs );
 202                         free( matched_dn );
 203                         return -1;
 204                 }
 205
 206         } else {
 207                 if(pdn != NULL) {
 208                         assert( *pdn == '\0' );
 209                         free(pdn);
 210                 }
 211
 212                 /* no parent, must be adding entry to root */
 213                 if ( !be_isroot( be, op->o_ndn ) && !be_issuffix( be, "" ) ) {
 214                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 215
 216 #ifdef NEW_LOGGING
 217                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 218                                    "ldbm_back_add: %s add denied.\n",
 219                                    pdn == NULL ? "suffix" : "entry at root" ));
 220 #else
 221                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 222                                         pdn == NULL ? "suffix" : "entry at root",
 223                                         0, 0 );
 224 #endif
 225
 226
 227                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 228                             NULL, NULL, NULL, NULL );
 229
 230                         return -1;
 231                 }
 232
 233                 /*
 234                  * no parent, acquire the root write lock
 235                  * and release the add lock.
 236                  */
 237                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 238                 rootlock = 1;
 239                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 240         }
 241
 242         e->e_id = next_id( be );
 243
 244         if( e->e_id == NOID ) {
 245                 if( p != NULL) {
 246                         /* free parent and writer lock */
 247                         cache_return_entry_w( &li->li_cache, p );
 248                 }
 249
 250                 if ( rootlock ) {
 251                         /* release root lock */
 252                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 253                 }
 254
 255 #ifdef NEW_LOGGING
 256                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 257                            "ldbm_back_add: next_id failed.\n" ));
 258 #else
 259                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 260                         0, 0, 0 );
 261 #endif
 262
 263
 264                 send_ldap_result( conn, op, LDAP_OTHER,
 265                         NULL, "next_id add failed", NULL, NULL );
 266
 267                 return( -1 );
 268         }
 269
 270         /*
 271          * Try to add the entry to the cache, assign it a new dnid.
 272          */
 273         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 274
 275         if ( rc != 0 ) {
 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: cache_add_entry_lock failed.\n" ));
 289 #else
 290                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 291                     0 );
 292 #endif
 293
 294
 295                 send_ldap_result( conn, op,
 296                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 297                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 298
 299                 return( -1 );
 300         }
 301
 302         rc = -1;
 303
 304         /* attribute indexes */
 305         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 306 #ifdef NEW_LOGGING
 307                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 308                            "ldbm_back_add: index_entry_add failed.\n" ));
 309 #else
 310                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 311                     0, 0 );
 312 #endif
 313
 314                 send_ldap_result( conn, op, LDAP_OTHER,
 315                         NULL, "index generation failed", NULL, NULL );
 316
 317                 goto return_results;
 318         }
 319
 320         /* dn2id index */
 321         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 322 #ifdef NEW_LOGGING
 323                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 324                            "ldbm_back_add: dn2id_add failed.\n" ));
 325 #else
 326                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 327                     0, 0 );
 328 #endif
 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                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 347                 send_ldap_result( conn, op, LDAP_OTHER,
 348                         NULL, "entry store failed", NULL, NULL );
 349
 350                 goto return_results;
 351         }
 352
 353         send_ldap_result( conn, op, LDAP_SUCCESS,
 354                 NULL, NULL, NULL, NULL );
 355         rc = 0;
 356
 357 return_results:;
 358         if (p != NULL) {
 359                 /* free parent and writer lock */
 360                 cache_return_entry_w( &li->li_cache, p );
 361         }
 362
 363         if ( rootlock ) {
 364                 /* release root lock */
 365                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 366         }
 367
 368         if ( rc ) {
 369                 /* free entry and writer lock */
 370                 cache_return_entry_w( &li->li_cache, e );
 371         }
 372
 373         return( rc );
 374 }