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
  35
  36 #ifdef NEW_LOGGING
  37         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,"ldbm_back_add: %s\n",
  38                    e->e_dn ));
  39 #else
  40         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", e->e_dn, 0, 0);
  41 #endif
  42
  43
  44         /* nobody else can add until we lock our parent */
  45         ldap_pvt_thread_mutex_lock(&li->li_add_mutex);
  46
  47         if ( ( dn2id( be, e->e_ndn ) ) != NOID ) {
  48                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  49                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
  50                         NULL, NULL, NULL, NULL );
  51                 return( -1 );
  52         }
  53
  54         rc = entry_schema_check( e, NULL, &text );
  55
  56         if ( rc != LDAP_SUCCESS ) {
  57                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  58
  59 #ifdef NEW_LOGGING
  60                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
  61                            "ldbm_back_add: entry (%s) failed schema check.\n",
  62                            e->e_dn ));
  63 #else
  64                 Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
  65                         text, 0, 0 );
  66 #endif
  67
  68
  69                 send_ldap_result( conn, op, rc,
  70                         NULL, text, NULL, NULL );
  71                 return( -1 );
  72         }
  73
  74         /*
  75          * Get the parent dn and see if the corresponding entry exists.
  76          * If the parent does not exist, only allow the "root" user to
  77          * add the entry.
  78          */
  79
  80         pdn = dn_parent( be, e->e_ndn );
  81
  82         if( pdn != NULL && *pdn != '\0' ) {
  83                 Entry *matched = NULL;
  84
  85                 assert( *pdn != '\0' );
  86
  87                 /* get parent with writer lock */
  88                 if ( (p = dn2entry_w( be, pdn, &matched )) == NULL ) {
  89                         char *matched_dn;
  90                         struct berval **refs;
  91
  92                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
  93
  94                         if ( matched != NULL ) {
  95                                 matched_dn = ch_strdup( matched->e_dn );
  96                                 refs = is_entry_referral( matched )
  97                                         ? get_entry_referrals( be, conn, op, matched )
  98                                         : NULL;
  99                                 cache_return_entry_r( &li->li_cache, matched );
 100
 101                         } else {
 102                                 matched_dn = NULL;
 103                                 refs = default_referral;
 104                         }
 105
 106 #ifdef NEW_LOGGING
 107                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 108                                    "ldbm_back_add: Parent of (%s) does not exist.\n",
 109                                    e->e_dn ));
 110 #else
 111                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
 112                                 0, 0, 0 );
 113 #endif
 114
 115
 116                         send_ldap_result( conn, op, LDAP_REFERRAL,
 117                             matched_dn, NULL, refs, NULL );
 118
 119                         if( matched != NULL ) {
 120                                 ber_bvecfree( refs );
 121                                 free( matched_dn );
 122                         }
 123
 124                         free( pdn );
 125                         return -1;
 126                 }
 127
 128                 /* don't need the add lock anymore */
 129                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 130
 131                 free(pdn);
 132
 133                 if ( ! access_allowed( be, conn, op, p,
 134                         children, NULL, ACL_WRITE ) )
 135                 {
 136                         /* free parent and writer lock */
 137                         cache_return_entry_w( &li->li_cache, p );
 138
 139 #ifdef NEW_LOGGING
 140                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 141                                    "ldbm_back_add: No write access to parent (%s).\n",
 142                                    e->e_dn ));
 143 #else
 144                         Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
 145                             0, 0 );
 146 #endif
 147
 148                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 149                             NULL, "no write access to parent", NULL, NULL );
 150
 151
 152                         return -1;
 153                 }
 154
 155                 if ( is_entry_alias( p ) ) {
 156                         /* parent is an alias, don't allow add */
 157
 158                         /* free parent and writer lock */
 159                         cache_return_entry_w( &li->li_cache, p );
 160
 161 #ifdef NEW_LOGGING
 162                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 163                                    "ldbm_back_add:  Parent is an alias.\n"));
 164 #else
 165                         Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
 166                             0, 0 );
 167 #endif
 168
 169
 170                         send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
 171                             NULL, "parent is an alias", NULL, NULL );
 172
 173                         return -1;
 174                 }
 175
 176                 if ( is_entry_referral( p ) ) {
 177                         /* parent is a referral, don't allow add */
 178                         char *matched_dn = ch_strdup( p->e_dn );
 179                         struct berval **refs = is_entry_referral( p )
 180                                 ? get_entry_referrals( be, conn, op, p )
 181                                 : NULL;
 182
 183                         /* free parent and writer lock */
 184                         cache_return_entry_w( &li->li_cache, p );
 185
 186 #ifdef NEW_LOGGING
 187                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 188                                    "ldbm_back_add: Parent is referral.\n" ));
 189 #else
 190                         Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
 191                             0, 0 );
 192 #endif
 193
 194                         send_ldap_result( conn, op, LDAP_REFERRAL,
 195                             matched_dn, NULL, refs, NULL );
 196
 197                         ber_bvecfree( refs );
 198                         free( matched_dn );
 199                         return -1;
 200                 }
 201
 202         } else {
 203                 if(pdn != NULL) {
 204                         assert( *pdn == '\0' );
 205                         free(pdn);
 206                 }
 207
 208                 /* no parent, must be adding entry to root */
 209                 if ( !be_isroot( be, op->o_ndn ) && !be_issuffix( be, "" ) ) {
 210                         ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 211
 212 #ifdef NEW_LOGGING
 213                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 214                                    "ldbm_back_add: %s add denied.\n",
 215                                    pdn == NULL ? "suffix" : "entry at root" ));
 216 #else
 217                         Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
 218                                         pdn == NULL ? "suffix" : "entry at root",
 219                                         0, 0 );
 220 #endif
 221
 222
 223                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 224                             NULL, NULL, NULL, NULL );
 225
 226                         return -1;
 227                 }
 228
 229                 /*
 230                  * no parent, acquire the root write lock
 231                  * and release the add lock.
 232                  */
 233                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 234                 rootlock = 1;
 235                 ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
 236         }
 237
 238         e->e_id = next_id( be );
 239
 240         if( e->e_id == NOID ) {
 241                 if( p != NULL) {
 242                         /* free parent and writer lock */
 243                         cache_return_entry_w( &li->li_cache, p );
 244                 }
 245
 246                 if ( rootlock ) {
 247                         /* release root lock */
 248                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 249                 }
 250
 251 #ifdef NEW_LOGGING
 252                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 253                            "ldbm_back_add: next_id failed.\n" ));
 254 #else
 255                 Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
 256                         0, 0, 0 );
 257 #endif
 258
 259
 260                 send_ldap_result( conn, op, LDAP_OTHER,
 261                         NULL, "next_id add failed", NULL, NULL );
 262
 263                 return( -1 );
 264         }
 265
 266         /*
 267          * Try to add the entry to the cache, assign it a new dnid.
 268          */
 269         rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
 270
 271         if ( rc != 0 ) {
 272                 if( p != NULL) {
 273                         /* free parent and writer lock */
 274                         cache_return_entry_w( &li->li_cache, p );
 275                 }
 276
 277                 if ( rootlock ) {
 278                         /* release root lock */
 279                         ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 280                 }
 281
 282 #ifdef NEW_LOGGING
 283                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 284                            "ldbm_back_add: cache_add_entry_lock failed.\n" ));
 285 #else
 286                 Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
 287                     0 );
 288 #endif
 289
 290
 291                 send_ldap_result( conn, op,
 292                         rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
 293                         NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
 294
 295                 return( -1 );
 296         }
 297
 298         rc = -1;
 299
 300         /* attribute indexes */
 301         if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
 302 #ifdef NEW_LOGGING
 303                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 304                            "ldbm_back_add: index_entry_add failed.\n" ));
 305 #else
 306                 Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
 307                     0, 0 );
 308 #endif
 309
 310                 send_ldap_result( conn, op, LDAP_OTHER,
 311                         NULL, "index generation failed", NULL, NULL );
 312
 313                 goto return_results;
 314         }
 315
 316         /* dn2id index */
 317         if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
 318 #ifdef NEW_LOGGING
 319                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 320                            "ldbm_back_add: dn2id_add failed.\n" ));
 321 #else
 322                 Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
 323                     0, 0 );
 324 #endif
 325
 326                 send_ldap_result( conn, op, LDAP_OTHER,
 327                         NULL, "DN index generation failed", NULL, NULL );
 328
 329                 goto return_results;
 330         }
 331
 332         /* id2entry index */
 333         if ( id2entry_add( be, e ) != 0 ) {
 334 #ifdef NEW_LOGGING
 335                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 336                            "ldbm_back_add: id2entry_add failed.\n" ));
 337 #else
 338                 Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
 339                     0, 0 );
 340 #endif
 341
 342                 (void) dn2id_delete( be, e->e_ndn, e->e_id );
 343                 send_ldap_result( conn, op, LDAP_OTHER,
 344                         NULL, "entry store failed", NULL, NULL );
 345
 346                 goto return_results;
 347         }
 348
 349         send_ldap_result( conn, op, LDAP_SUCCESS,
 350                 NULL, NULL, NULL, NULL );
 351         rc = 0;
 352
 353 return_results:;
 354         if (p != NULL) {
 355                 /* free parent and writer lock */
 356                 cache_return_entry_w( &li->li_cache, p );
 357         }
 358
 359         if ( rootlock ) {
 360                 /* release root lock */
 361                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 362         }
 363
 364         if ( rc ) {
 365                 /* free entry and writer lock */
 366                 cache_return_entry_w( &li->li_cache, e );
 367         }
 368
 369         return( rc );
 370 }