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 #ifdef LDAP_SYNCREPL /* FIXME : dn2entry() should return non-glue entry */
  46         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
  47 #else
  48         if ( e == NULL ) {
  49 #endif
  50 #ifdef NEW_LOGGING
  51                 LDAP_LOG( BACK_LDBM, INFO,
  52                         "ldbm_back_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0 );
  53 #else
  54                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  55                         op->o_req_dn.bv_val, 0, 0);
  56 #endif
  57
  58                 if ( matched != NULL ) {
  59                         rs->sr_matched = ch_strdup( matched->e_dn );
  60                         rs->sr_ref = is_entry_referral( matched )
  61                                 ? get_entry_referrals( op, matched )
  62                                 : NULL;
  63                         cache_return_entry_r( &li->li_cache, matched );
  64
  65                 } else {
  66 #ifdef LDAP_SYNCREPL
  67                         BerVarray deref = op->o_bd->syncinfo ?
  68                                                           op->o_bd->syncinfo->provideruri_bv : default_referral;
  69 #else
  70                         BerVarray deref = default_referral;
  71 #endif
  72                         rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  73                 }
  74
  75                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  76
  77                 rs->sr_err = LDAP_REFERRAL;
  78                 send_ldap_result( op, rs );
  79
  80                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  81                 free( (char *)rs->sr_matched );
  82
  83                 return( -1 );
  84         }
  85
  86         /* check entry for "entry" acl */
  87 #ifdef LDAP_CACHING
  88         if( !op->o_caching_on ) {
  89 #endif /* LDAP_CACHING */
  90         if ( ! access_allowed( op, e,
  91                 entry, NULL, ACL_WRITE, NULL ) )
  92         {
  93 #ifdef NEW_LOGGING
  94                 LDAP_LOG( BACK_LDBM, ERR,
  95                         "ldbm_back_delete: no write access to entry of (%s)\n",
  96                         op->o_req_dn.bv_val, 0, 0 );
  97 #else
  98                 Debug( LDAP_DEBUG_TRACE,
  99                         "<=- ldbm_back_delete: no write access to entry\n", 0,
 100                         0, 0 );
 101 #endif
 102
 103                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 104                         "no write access to entry" );
 105
 106                 rc = 1;
 107                 goto return_results;
 108         }
 109
 110         if ( !manageDSAit && is_entry_referral( e ) ) {
 111                 /* parent is a referral, don't allow add */
 112                 /* parent is an alias, don't allow add */
 113                 rs->sr_ref = get_entry_referrals( op, e );
 114
 115 #ifdef NEW_LOGGING
 116                 LDAP_LOG( BACK_LDBM, INFO,
 117                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 118 #else
 119                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 120                     0, 0 );
 121 #endif
 122
 123                 rs->sr_err = LDAP_REFERRAL;
 124                 rs->sr_matched = e->e_name.bv_val;
 125                 send_ldap_result( op, rs );
 126
 127                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 128
 129                 rc = 1;
 130                 goto return_results;
 131         }
 132
 133         if ( has_children( op->o_bd, e ) ) {
 134 #ifdef NEW_LOGGING
 135                 LDAP_LOG( BACK_LDBM, ERR,
 136                            "ldbm_back_delete: (%s) is a non-leaf node.\n", op->o_req_dn.bv_val, 0,0);
 137 #else
 138                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 139                         op->o_req_dn.bv_val, 0, 0);
 140 #endif
 141
 142                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 143                         "subtree delete not supported" );
 144                 goto return_results;
 145         }
 146
 147         /* delete from parent's id2children entry */
 148         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 149                 pdn.bv_len) ) {
 150                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 151 #ifdef NEW_LOGGING
 152                         LDAP_LOG( BACK_LDBM, ERR,
 153                                 "ldbm_back_delete: parent of (%s) does not exist\n", op->o_req_dn, 0, 0 );
 154 #else
 155                         Debug( LDAP_DEBUG_TRACE,
 156                                 "<=- ldbm_back_delete: parent does not exist\n",
 157                                 0, 0, 0);
 158 #endif
 159
 160                         send_ldap_error( op, rs, LDAP_OTHER,
 161                                 "could not locate parent of entry" );
 162                         goto return_results;
 163                 }
 164
 165                 /* check parent for "children" acl */
 166                 if ( ! access_allowed( op, p,
 167                         children, NULL, ACL_WRITE, NULL ) )
 168                 {
 169 #ifdef NEW_LOGGING
 170                         LDAP_LOG( BACK_LDBM, ERR,
 171                                 "ldbm_back_delete: no access to parent of (%s)\n",
 172                                 op->o_req_dn.bv_val, 0, 0 );
 173 #else
 174                         Debug( LDAP_DEBUG_TRACE,
 175                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 176                                 0, 0 );
 177 #endif
 178
 179                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 180                                 "no write access to parent" );
 181                         goto return_results;
 182                 }
 183
 184         } else {
 185                 /* no parent, must be root to delete */
 186                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 187                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 188                                 p = (Entry *)&slap_entry_root;
 189
 190                                 rc = access_allowed( op, p,
 191                                         children, NULL, ACL_WRITE, NULL );
 192                                 p = NULL;
 193
 194                                 /* check parent for "children" acl */
 195                                 if ( ! rc ) {
 196 #ifdef NEW_LOGGING
 197                                         LDAP_LOG( BACK_LDBM, ERR,
 198                                                 "ldbm_back_delete: no access "
 199                                                 "to parent of ("")\n", 0, 0, 0 );
 200 #else
 201                                         Debug( LDAP_DEBUG_TRACE,
 202                                                 "<=- ldbm_back_delete: no "
 203                                                 "access to parent\n", 0, 0, 0 );
 204 #endif
 205
 206                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 207                                                 "no write access to parent" );
 208                                         goto return_results;
 209                                 }
 210
 211                         } else {
 212 #ifdef NEW_LOGGING
 213                                 LDAP_LOG( BACK_LDBM, ERR,
 214                                         "ldbm_back_delete: (%s) has no "
 215                                         "parent & not a root.\n", op->o_ndn, 0, 0 );
 216 #else
 217                                 Debug( LDAP_DEBUG_TRACE,
 218                                         "<=- ldbm_back_delete: no parent & "
 219                                         "not root\n", 0, 0, 0);
 220 #endif
 221
 222                                 send_ldap_error( op, rs,
 223                                         LDAP_INSUFFICIENT_ACCESS,
 224                                         NULL );
 225                                 goto return_results;
 226                         }
 227                 }
 228         }
 229 #ifdef LDAP_CACHING
 230         }
 231 #endif /* LDAP_CACHING */
 232
 233         /* delete from dn2id mapping */
 234         if ( dn2id_delete( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 235 #ifdef NEW_LOGGING
 236                 LDAP_LOG( BACK_LDBM, ERR,
 237                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 238 #else
 239                 Debug(LDAP_DEBUG_ARGS,
 240                         "<=- ldbm_back_delete: operations error %s\n",
 241                         op->o_req_dn.bv_val, 0, 0);
 242 #endif
 243
 244                 send_ldap_error( op, rs, LDAP_OTHER,
 245                         "DN index delete failed" );
 246                 goto return_results;
 247         }
 248
 249         /* delete from disk and cache */
 250         if ( id2entry_delete( op->o_bd, e ) != 0 ) {
 251 #ifdef NEW_LOGGING
 252                 LDAP_LOG( BACK_LDBM, ERR,
 253                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 254 #else
 255                 Debug(LDAP_DEBUG_ARGS,
 256                         "<=- ldbm_back_delete: operations error %s\n",
 257                         op->o_req_dn.bv_val, 0, 0);
 258 #endif
 259
 260                 send_ldap_error( op, rs, LDAP_OTHER,
 261                         "entry delete failed" );
 262                 goto return_results;
 263         }
 264
 265         /* delete attribute indices */
 266         (void) index_entry_del( op, e );
 267
 268         rs->sr_err = LDAP_SUCCESS;
 269         send_ldap_result( op, rs );
 270         rc = 0;
 271
 272 return_results:;
 273         if( p != NULL ) {
 274                 /* free parent and writer lock */
 275                 cache_return_entry_w( &li->li_cache, p );
 276         }
 277
 278         /* free entry and writer lock */
 279         cache_return_entry_w( &li->li_cache, e );
 280
 281         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 282
 283         return rc;
 284 }