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