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