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