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         if ( (e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched )) == NULL ) {
  44 #ifdef NEW_LOGGING
  45                 LDAP_LOG( BACK_LDBM, INFO,
  46                         "ldbm_back_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0 );
  47 #else
  48                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  49                         op->o_req_dn.bv_val, 0, 0);
  50 #endif
  51
  52                 if ( matched != NULL ) {
  53                         rs->sr_matched = ch_strdup( matched->e_dn );
  54                         rs->sr_ref = is_entry_referral( matched )
  55                                 ? get_entry_referrals( op, matched )
  56                                 : NULL;
  57                         cache_return_entry_r( &li->li_cache, matched );
  58
  59                 } else {
  60                         rs->sr_ref = referral_rewrite( default_referral,
  61                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  62                 }
  63
  64                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  65
  66                 rs->sr_err = LDAP_REFERRAL;
  67                 send_ldap_result( op, rs );
  68
  69                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  70                 free( (char *)rs->sr_matched );
  71
  72                 return( -1 );
  73         }
  74
  75         /* check entry for "entry" acl */
  76 #ifdef LDAP_CACHING
  77         if( !op->o_caching_on ) {
  78 #endif /* LDAP_CACHING */
  79         if ( ! access_allowed( op, e,
  80                 entry, NULL, ACL_WRITE, NULL ) )
  81         {
  82 #ifdef NEW_LOGGING
  83                 LDAP_LOG( BACK_LDBM, ERR,
  84                         "ldbm_back_delete: no write access to entry of (%s)\n",
  85                         op->o_req_dn.bv_val, 0, 0 );
  86 #else
  87                 Debug( LDAP_DEBUG_TRACE,
  88                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  89                         0, 0 );
  90 #endif
  91
  92                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  93                         "no write access to entry" );
  94
  95                 rc = 1;
  96                 goto return_results;
  97         }
  98
  99         if ( !manageDSAit && is_entry_referral( e ) ) {
 100                 /* parent is a referral, don't allow add */
 101                 /* parent is an alias, don't allow add */
 102                 rs->sr_ref = get_entry_referrals( op, e );
 103
 104 #ifdef NEW_LOGGING
 105                 LDAP_LOG( BACK_LDBM, INFO,
 106                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 107 #else
 108                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 109                     0, 0 );
 110 #endif
 111
 112                 rs->sr_err = LDAP_REFERRAL;
 113                 rs->sr_matched = e->e_name.bv_val;
 114                 send_ldap_result( op, rs );
 115
 116                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 117
 118                 rc = 1;
 119                 goto return_results;
 120         }
 121
 122         if ( has_children( op->o_bd, e ) ) {
 123 #ifdef NEW_LOGGING
 124                 LDAP_LOG( BACK_LDBM, ERR,
 125                            "ldbm_back_delete: (%s) is a non-leaf node.\n", op->o_req_dn.bv_val, 0,0);
 126 #else
 127                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 128                         op->o_req_dn.bv_val, 0, 0);
 129 #endif
 130
 131                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 132                         "subtree delete not supported" );
 133                 goto return_results;
 134         }
 135
 136         /* delete from parent's id2children entry */
 137         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 138                 pdn.bv_len) ) {
 139                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 140 #ifdef NEW_LOGGING
 141                         LDAP_LOG( BACK_LDBM, ERR,
 142                                 "ldbm_back_delete: parent of (%s) does not exist\n", op->o_req_dn, 0, 0 );
 143 #else
 144                         Debug( LDAP_DEBUG_TRACE,
 145                                 "<=- ldbm_back_delete: parent does not exist\n",
 146                                 0, 0, 0);
 147 #endif
 148
 149                         send_ldap_error( op, rs, LDAP_OTHER,
 150                                 "could not locate parent of entry" );
 151                         goto return_results;
 152                 }
 153
 154                 /* check parent for "children" acl */
 155                 if ( ! access_allowed( op, p,
 156                         children, NULL, ACL_WRITE, NULL ) )
 157                 {
 158 #ifdef NEW_LOGGING
 159                         LDAP_LOG( BACK_LDBM, ERR,
 160                                 "ldbm_back_delete: no access to parent of (%s)\n",
 161                                 op->o_req_dn.bv_val, 0, 0 );
 162 #else
 163                         Debug( LDAP_DEBUG_TRACE,
 164                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 165                                 0, 0 );
 166 #endif
 167
 168                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 169                                 "no write access to parent" );
 170                         goto return_results;
 171                 }
 172
 173         } else {
 174                 /* no parent, must be root to delete */
 175                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 176                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 177                                 p = (Entry *)&slap_entry_root;
 178
 179                                 rc = access_allowed( op, p,
 180                                         children, NULL, ACL_WRITE, NULL );
 181                                 p = NULL;
 182
 183                                 /* check parent for "children" acl */
 184                                 if ( ! rc ) {
 185 #ifdef NEW_LOGGING
 186                                         LDAP_LOG( BACK_LDBM, ERR,
 187                                                 "ldbm_back_delete: no access "
 188                                                 "to parent of ("")\n", 0, 0, 0 );
 189 #else
 190                                         Debug( LDAP_DEBUG_TRACE,
 191                                                 "<=- ldbm_back_delete: no "
 192                                                 "access to parent\n", 0, 0, 0 );
 193 #endif
 194
 195                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 196                                                 "no write access to parent" );
 197                                         goto return_results;
 198                                 }
 199
 200                         } else {
 201 #ifdef NEW_LOGGING
 202                                 LDAP_LOG( BACK_LDBM, ERR,
 203                                         "ldbm_back_delete: (%s) has no "
 204                                         "parent & not a root.\n", op->o_ndn, 0, 0 );
 205 #else
 206                                 Debug( LDAP_DEBUG_TRACE,
 207                                         "<=- ldbm_back_delete: no parent & "
 208                                         "not root\n", 0, 0, 0);
 209 #endif
 210
 211                                 send_ldap_error( op, rs,
 212                                         LDAP_INSUFFICIENT_ACCESS,
 213                                         NULL );
 214                                 goto return_results;
 215                         }
 216                 }
 217         }
 218 #ifdef LDAP_CACHING
 219         }
 220 #endif /* LDAP_CACHING */
 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 = 0;
 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 }