git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/delete.c

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 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/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17 #include "proto-back-ldbm.h"
  18
  19 int
  20 ldbm_back_delete(
  21     Operation   *op,
  22     SlapReply   *rs )
  23 {
  24         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  25         Entry   *matched;
  26         struct berval   pdn;
  27         Entry   *e, *p = NULL;
  28         int     rc = -1;
  29         int             manageDSAit = get_manageDSAit( op );
  30         AttributeDescription *children = slap_schema.si_ad_children;
  31         AttributeDescription *entry = slap_schema.si_ad_entry;
  32
  33 #ifdef NEW_LOGGING
  34         LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_delete: %s\n", op->o_req_dn.bv_val, 0, 0 );
  35 #else
  36         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", op->o_req_dn.bv_val, 0, 0);
  37 #endif
  38
  39         /* grab giant lock for writing */
  40         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  41
  42         /* get entry with writer lock */
  43         e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched );
  44
  45         /* FIXME : dn2entry() should return non-glue entry */
  46         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
  47 #ifdef NEW_LOGGING
  48                 LDAP_LOG( BACK_LDBM, INFO,
  49                         "ldbm_back_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0 );
  50 #else
  51                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  52                         op->o_req_dn.bv_val, 0, 0);
  53 #endif
  54
  55                 if ( matched != NULL ) {
  56                         rs->sr_matched = ch_strdup( matched->e_dn );
  57                         rs->sr_ref = is_entry_referral( matched )
  58                                 ? get_entry_referrals( op, matched )
  59                                 : NULL;
  60                         cache_return_entry_r( &li->li_cache, matched );
  61
  62                 } else {
  63                         BerVarray deref = op->o_bd->be_syncinfo ?
  64                                 op->o_bd->be_syncinfo->si_provideruri_bv : default_referral;
  65                         rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
  66                                 LDAP_SCOPE_DEFAULT );
  67                 }
  68
  69                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  70
  71                 rs->sr_err = LDAP_REFERRAL;
  72                 send_ldap_result( op, rs );
  73
  74                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  75                 free( (char *)rs->sr_matched );
  76                 rs->sr_ref = NULL;
  77                 rs->sr_matched = NULL;
  78                 return( -1 );
  79         }
  80
  81         /* check entry for "entry" acl */
  82         if ( ! access_allowed( op, e,
  83                 entry, NULL, ACL_WRITE, NULL ) )
  84         {
  85 #ifdef NEW_LOGGING
  86                 LDAP_LOG( BACK_LDBM, ERR,
  87                         "ldbm_back_delete: no write access to entry of (%s)\n",
  88                         op->o_req_dn.bv_val, 0, 0 );
  89 #else
  90                 Debug( LDAP_DEBUG_TRACE,
  91                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  92                         0, 0 );
  93 #endif
  94
  95                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  96                         "no write access to entry" );
  97
  98                 rc = LDAP_INSUFFICIENT_ACCESS;
  99                 goto return_results;
 100         }
 101
 102         if ( !manageDSAit && is_entry_referral( e ) ) {
 103                 /* parent is a referral, don't allow add */
 104                 /* parent is an alias, don't allow add */
 105                 rs->sr_ref = get_entry_referrals( op, e );
 106
 107 #ifdef NEW_LOGGING
 108                 LDAP_LOG( BACK_LDBM, INFO,
 109                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 110 #else
 111                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 112                     0, 0 );
 113 #endif
 114
 115                 rs->sr_err = LDAP_REFERRAL;
 116                 rs->sr_matched = e->e_name.bv_val;
 117                 send_ldap_result( op, rs );
 118
 119                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 120                 rs->sr_ref = NULL;
 121                 rs->sr_matched = NULL;
 122                 rc = LDAP_REFERRAL;
 123                 goto return_results;
 124         }
 125
 126         if ( has_children( op->o_bd, e ) ) {
 127 #ifdef NEW_LOGGING
 128                 LDAP_LOG( BACK_LDBM, ERR,
 129                            "ldbm_back_delete: (%s) is a non-leaf node.\n", op->o_req_dn.bv_val, 0,0);
 130 #else
 131                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 132                         op->o_req_dn.bv_val, 0, 0);
 133 #endif
 134
 135                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 136                         "subtree delete not supported" );
 137                 goto return_results;
 138         }
 139
 140         /* delete from parent's id2children entry */
 141         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 142                 pdn.bv_len) ) {
 143                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 144 #ifdef NEW_LOGGING
 145                         LDAP_LOG( BACK_LDBM, ERR,
 146                                 "ldbm_back_delete: parent of (%s) does not exist\n", op->o_req_dn, 0, 0 );
 147 #else
 148                         Debug( LDAP_DEBUG_TRACE,
 149                                 "<=- ldbm_back_delete: parent does not exist\n",
 150                                 0, 0, 0);
 151 #endif
 152
 153                         send_ldap_error( op, rs, LDAP_OTHER,
 154                                 "could not locate parent of entry" );
 155                         goto return_results;
 156                 }
 157
 158                 /* check parent for "children" acl */
 159                 if ( ! access_allowed( op, p,
 160                         children, NULL, ACL_WRITE, NULL ) )
 161                 {
 162 #ifdef NEW_LOGGING
 163                         LDAP_LOG( BACK_LDBM, ERR,
 164                                 "ldbm_back_delete: no access to parent of (%s)\n",
 165                                 op->o_req_dn.bv_val, 0, 0 );
 166 #else
 167                         Debug( LDAP_DEBUG_TRACE,
 168                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 169                                 0, 0 );
 170 #endif
 171
 172                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 173                                 "no write access to parent" );
 174                         goto return_results;
 175                 }
 176
 177         } else {
 178                 /* no parent, must be root to delete */
 179                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 180                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 181                                 p = (Entry *)&slap_entry_root;
 182
 183                                 rc = access_allowed( op, p,
 184                                         children, NULL, ACL_WRITE, NULL );
 185                                 p = NULL;
 186
 187                                 /* check parent for "children" acl */
 188                                 if ( ! rc ) {
 189 #ifdef NEW_LOGGING
 190                                         LDAP_LOG( BACK_LDBM, ERR,
 191                                                 "ldbm_back_delete: no access "
 192                                                 "to parent of ("")\n", 0, 0, 0 );
 193 #else
 194                                         Debug( LDAP_DEBUG_TRACE,
 195                                                 "<=- ldbm_back_delete: no "
 196                                                 "access to parent\n", 0, 0, 0 );
 197 #endif
 198
 199                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 200                                                 "no write access to parent" );
 201                                         goto return_results;
 202                                 }
 203
 204                         } else {
 205 #ifdef NEW_LOGGING
 206                                 LDAP_LOG( BACK_LDBM, ERR,
 207                                         "ldbm_back_delete: (%s) has no "
 208                                         "parent & not a root.\n", op->o_ndn, 0, 0 );
 209 #else
 210                                 Debug( LDAP_DEBUG_TRACE,
 211                                         "<=- ldbm_back_delete: no parent & "
 212                                         "not root\n", 0, 0, 0);
 213 #endif
 214
 215                                 send_ldap_error( op, rs,
 216                                         LDAP_INSUFFICIENT_ACCESS,
 217                                         NULL );
 218                                 goto return_results;
 219                         }
 220                 }
 221         }
 222
 223         /* delete from dn2id mapping */
 224         if ( dn2id_delete( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 225 #ifdef NEW_LOGGING
 226                 LDAP_LOG( BACK_LDBM, ERR,
 227                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 228 #else
 229                 Debug(LDAP_DEBUG_ARGS,
 230                         "<=- ldbm_back_delete: operations error %s\n",
 231                         op->o_req_dn.bv_val, 0, 0);
 232 #endif
 233
 234                 send_ldap_error( op, rs, LDAP_OTHER,
 235                         "DN index delete failed" );
 236                 goto return_results;
 237         }
 238
 239         /* delete from disk and cache */
 240         if ( id2entry_delete( op->o_bd, e ) != 0 ) {
 241 #ifdef NEW_LOGGING
 242                 LDAP_LOG( BACK_LDBM, ERR,
 243                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 244 #else
 245                 Debug(LDAP_DEBUG_ARGS,
 246                         "<=- ldbm_back_delete: operations error %s\n",
 247                         op->o_req_dn.bv_val, 0, 0);
 248 #endif
 249
 250                 send_ldap_error( op, rs, LDAP_OTHER,
 251                         "entry delete failed" );
 252                 goto return_results;
 253         }
 254
 255         /* delete attribute indices */
 256         (void) index_entry_del( op, e );
 257
 258         rs->sr_err = LDAP_SUCCESS;
 259         send_ldap_result( op, rs );
 260         rc = LDAP_SUCCESS;
 261
 262 return_results:;
 263         if( p != NULL ) {
 264                 /* free parent and writer lock */
 265                 cache_return_entry_w( &li->li_cache, p );
 266         }
 267
 268         /* free entry and writer lock */
 269         cache_return_entry_w( &li->li_cache, e );
 270
 271         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 272
 273         return rc;
 274 }