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         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 ) ) != NOID ) {
  49                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  50                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
  51                         NULL, NULL, NULL, NULL );
  52                 return( -1 );
  53         }
  54
  55         rc = entry_schema_check( e, NULL, &text, textbuf, textlen );
  56
  57         if ( rc != LDAP_SUCCESS ) {
  58                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  59
  60 #ifdef NEW_LOGGING
  61                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
  62                            "ldbm_back_add: entry (%s) failed schema check.\n",
  63                            e->e_dn ));
  64 #else
  65                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  66                         text, 0, 0 );
  67 #endif
  68
  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         pdn = dn_parent( be, e->e_ndn );
  82
  83         if( pdn != NULL && *pdn != '\0' ) {
  84                 Entry *matched = NULL;
  85
  86                 assert( *pdn != '\0' );
  87
  88                 /* get parent with writer lock */
  89                 if ( (p = dn2entry_w( be, pdn, &matched )) == NULL ) {
  90                         char *matched_dn;
  91                         struct berval **refs;
  92
  93                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  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                                 matched_dn = NULL;
 104                                 refs = default_referral;
 105                         }
 106
 107 #ifdef NEW_LOGGING
 108                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 109                                    "ldbm_back_add: Parent of (%s) does not exist.\n",
 110                                    e->e_dn ));
 111 #else
 112                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 113                                 0, 0, 0 );
 114 #endif
 115
 116
 117                         send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
 118                                 refs == NULL ? "parent does not exist" : "parent is referral",
 119                                 refs, NULL );
 120
 121                         if( matched != NULL ) {
 122                                 ber_bvecfree( refs );
 123                                 free( matched_dn );
 124                         }
 125
 126                         free( pdn );
 127                         return -1;
 128                 }
 129
 130                 /* don't need the add lock anymore */
 131                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 132
 133                 free(pdn);
 134
 135                 if ( ! access_allowed( be, conn, op, p,
 136                         children, NULL, ACL_WRITE ) )
 137                 {
 138                         /* free parent and writer lock */
 139                         cache_return_entry_w( &li->li_cache, p );
 140
 141 #ifdef NEW_LOGGING
 142                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 143                                    "ldbm_back_add: No write access to parent (%s).\n",
 144                                    e->e_dn ));
 145 #else
 146                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 147                             0, 0 );
 148 #endif
 149
 150                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 151                             NULL, "no write access to parent", NULL, NULL );
 152
 153
 154                         return -1;
 155                 }
 156
 157                 if ( is_entry_alias( p ) ) {
 158                         /* parent is an alias, don't allow add */
 159
 160                         /* free parent and writer lock */
 161                         cache_return_entry_w( &li->li_cache, p );
 162
 163 #ifdef NEW_LOGGING
 164                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 165                                    "ldbm_back_add:  Parent is an alias.\n"));
 166 #else
 167                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 168                             0, 0 );
 169 #endif
 170
 171
 172                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 173                             NULL, "parent is an alias", NULL, NULL );
 174
 175                         return -1;
 176                 }
 177
 178                 if ( is_entry_referral( p ) ) {
 179                         /* parent is a referral, don't allow add */
 180                         char *matched_dn = ch_strdup( p->e_dn );
 181                         struct berval **refs = is_entry_referral( p )
 182                                 ? get_entry_referrals( be, conn, op, p )
 183                                 : NULL;
 184
 185                         /* free parent and writer lock */
 186                         cache_return_entry_w( &li->li_cache, p );
 187
 188 #ifdef NEW_LOGGING
 189                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 190                                    "ldbm_back_add: Parent is referral.\n" ));
 191 #else
 192                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 193                             0, 0 );
 194 #endif
 195
 196                         send_ldap_result( conn, op, LDAP_REFERRAL,
 197                             matched_dn, NULL, refs, NULL );
 198
 199                         ber_bvecfree( refs );
 200                         free( matched_dn );
 201                         return -1;
 202                 }
 203
 204         } else {
 205                 if(pdn != NULL) {
 206                         assert( *pdn == '\0' );
 207                         free(pdn);
 208                 }
 209
 210                 /* no parent, must be adding entry to root */
 211                 if ( !be_isroot( be, op->o_ndn ) && !be_issuffix( be, "" ) ) {
 212                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 213
 214 #ifdef NEW_LOGGING
 215                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 216                                    "ldbm_back_add: %s add denied.\n",
 217                                    pdn == NULL ? "suffix" : "entry at root" ));
 218 #else
 219                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 220                                         pdn == NULL ? "suffix" : "entry at root",
 221                                         0, 0 );
 222 #endif
 223
 224
 225                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 226                             NULL, NULL, NULL, NULL );
 227
 228                         return -1;
 229                 }
 230
 231                 /*
 232                  * no parent, acquire the root write lock
 233                  * and release the add lock.
 234                  */
 235                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 236                 rootlock = 1;
 237                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 238         }
 239
 240         e->e_id = next_id( be );
 241
 242         if( e->e_id == NOID ) {
 243                 if( p != NULL) {
 244                         /* free parent and writer lock */
 245                         cache_return_entry_w( &li->li_cache, p );
 246                 }
 247
 248                 if ( rootlock ) {
 249                         /* release root lock */
 250                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 251                 }
 252
 253 #ifdef NEW_LOGGING
 254                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 255                            "ldbm_back_add: next_id failed.\n" ));
 256 #else
 257                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 258                         0, 0, 0 );
 259 #endif
 260
 261
 262                 send_ldap_result( conn, op, LDAP_OTHER,
 263                         NULL, "next_id add failed", NULL, NULL );
 264
 265                 return( -1 );
 266         }
 267
 268         /*
 269          * Try to add the entry to the cache, assign it a new dnid.
 270          */
 271         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 272
 273         if ( rc != 0 ) {
 274                 if( p != NULL) {
 275                         /* free parent and writer lock */
 276                         cache_return_entry_w( &li->li_cache, p );
 277                 }
 278
 279                 if ( rootlock ) {
 280                         /* release root lock */
 281                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 282                 }
 283
 284 #ifdef NEW_LOGGING
 285                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 286                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 287 #else
 288                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 289                     0 );
 290 #endif
 291
 292
 293                 send_ldap_result( conn, op,
 294                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 295                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 296
 297                 return( -1 );
 298         }
 299
 300         rc = -1;
 301
 302         /* attribute indexes */
 303         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 304 #ifdef NEW_LOGGING
 305                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 306                            "ldbm_back_add: index_entry_add failed.\n" ));
 307 #else
 308                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 309                     0, 0 );
 310 #endif
 311
 312                 send_ldap_result( conn, op, LDAP_OTHER,
 313                         NULL, "index generation failed", NULL, NULL );
 314
 315                 goto return_results;
 316         }
 317
 318         /* dn2id index */
 319         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 320 #ifdef NEW_LOGGING
 321                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 322                            "ldbm_back_add: dn2id_add failed.\n" ));
 323 #else
 324                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 325                     0, 0 );
 326 #endif
 327
 328                 send_ldap_result( conn, op, LDAP_OTHER,
 329                         NULL, "DN index generation failed", NULL, NULL );
 330
 331                 goto return_results;
 332         }
 333
 334         /* id2entry index */
 335         if ( id2entry_add( be, e ) != 0 ) {
 336 #ifdef NEW_LOGGING
 337                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 338                            "ldbm_back_add: id2entry_add failed.\n" ));
 339 #else
 340                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 341                     0, 0 );
 342 #endif
 343
 344                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 345                 send_ldap_result( conn, op, LDAP_OTHER,
 346                         NULL, "entry store failed", NULL, NULL );
 347
 348                 goto return_results;
 349         }
 350
 351         send_ldap_result( conn, op, LDAP_SUCCESS,
 352                 NULL, NULL, NULL, NULL );
 353         rc = 0;
 354
 355 return_results:;
 356         if (p != NULL) {
 357                 /* free parent and writer lock */
 358                 cache_return_entry_w( &li->li_cache, p );
 359         }
 360
 361         if ( rootlock ) {
 362                 /* release root lock */
 363                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 364         }
 365
 366         if ( rc ) {
 367                 /* free entry and writer lock */
 368                 cache_return_entry_w( &li->li_cache, e );
 369         }
 370
 371         return( rc );
 372 }