git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/delete.c

   1 /* delete.c - ldbm backend delete routine */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/string.h>
   8 #include <ac/socket.h>
   9
  10 #include "slap.h"
  11 #include "back-ldbm.h"
  12 #include "proto-back-ldbm.h"
  13
  14 int
  15 ldbm_back_delete(
  16     Backend     *be,
  17     Connection  *conn,
  18     Operation   *op,
  19     char        *dn
  20 )
  21 {
  22         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  23         char    *matched = NULL;
  24         char    *pdn = NULL;
  25         Entry   *e, *p = NULL;
  26         int rootlock = 0;
  27         int     rc = -1;
  28
  29         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  30
  31         /* get entry with writer lock */
  32         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  33                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  34                         dn, 0, 0);
  35                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  36                 if ( matched != NULL ) {
  37                         free( matched );
  38                 }
  39                 return( -1 );
  40         }
  41
  42         /* check for deleted */
  43
  44         if ( has_children( be, e ) ) {
  45                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
  46                         dn, 0, 0);
  47                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF, "",
  48                     "" );
  49                 goto return_results;
  50         }
  51
  52 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  53         if ( ! access_allowed( be, conn, op, e,
  54                 "entry", NULL, ACL_WRITE ) )
  55         {
  56                 Debug(LDAP_DEBUG_ARGS,
  57                         "<=- ldbm_back_delete: insufficient access %s\n",
  58                         dn, 0, 0);
  59                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS, "", "" );
  60                 goto return_results;
  61         }
  62 #endif
  63
  64         /* delete from parent's id2children entry */
  65         if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
  66                 if( (p = dn2entry_w( be, pdn, &matched )) == NULL) {
  67                         Debug( LDAP_DEBUG_TRACE,
  68                                 "<=- ldbm_back_delete: parent does not exist\n",
  69                                 0, 0, 0);
  70                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
  71                                 "", "");
  72                         goto return_results;
  73                 }
  74
  75                 /* check parent for "children" acl */
  76                 if ( ! access_allowed( be, conn, op, p,
  77                         "children", NULL, ACL_WRITE ) )
  78                 {
  79                         Debug( LDAP_DEBUG_TRACE,
  80                                 "<=- ldbm_back_delete: no access to parent\n", 0,
  81                                 0, 0 );
  82                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  83                                 "", "" );
  84                         goto return_results;
  85                 }
  86
  87         } else {
  88                 /* no parent, must be root to delete */
  89                 if( ! be_isroot( be, op->o_ndn ) ) {
  90                         Debug( LDAP_DEBUG_TRACE,
  91                                 "<=- ldbm_back_delete: no parent & not root\n",
  92                                 0, 0, 0);
  93                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  94                                 "", "");
  95                         goto return_results;
  96                 }
  97
  98                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
  99                 rootlock = 1;
 100         }
 101
 102         if ( id2children_remove( be, p, e ) != 0 ) {
 103                 Debug(LDAP_DEBUG_ARGS,
 104                         "<=- ldbm_back_delete: operations error %s\n",
 105                         dn, 0, 0);
 106                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "","" );
 107                 goto return_results;
 108         }
 109
 110         /* delete from dn2id mapping */
 111         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 112                 Debug(LDAP_DEBUG_ARGS,
 113                         "<=- ldbm_back_delete: operations error %s\n",
 114                         dn, 0, 0);
 115                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 116                 goto return_results;
 117         }
 118
 119         /* delete from disk and cache */
 120         if ( id2entry_delete( be, e ) != 0 ) {
 121                 Debug(LDAP_DEBUG_ARGS,
 122                         "<=- ldbm_back_delete: operations error %s\n",
 123                         dn, 0, 0);
 124                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 125                 goto return_results;
 126         }
 127
 128         send_ldap_result( conn, op, LDAP_SUCCESS, "", "" );
 129         rc = 0;
 130
 131 return_results:;
 132         if ( pdn != NULL ) free(pdn);
 133
 134         if( p != NULL ) {
 135                 /* free parent and writer lock */
 136                 cache_return_entry_w( &li->li_cache, p );
 137         }
 138
 139         if ( rootlock ) {
 140                 /* release root lock */
 141                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 142         }
 143
 144         /* free entry and writer lock */
 145         cache_return_entry_w( &li->li_cache, e );
 146
 147         if ( matched != NULL ) free(matched);
 148
 149         return rc;
 150 }