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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2005 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34
  35 #include "lutil.h"
  36
  37 #ifdef LDAP_SLAPI
  38 #include "slapi/slapi.h"
  39 #endif
  40
  41 int
  42 do_delete(
  43     Operation   *op,
  44     SlapReply   *rs )
  45 {
  46         struct berval dn = BER_BVNULL;
  47
  48         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  49
  50         /*
  51          * Parse the delete request.  It looks like this:
  52          *
  53          *      DelRequest := DistinguishedName
  54          */
  55
  56         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  57                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  58                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  59                 return SLAPD_DISCONNECT;
  60         }
  61
  62         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  63                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  64                 goto cleanup;
  65         }
  66
  67         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  68                 op->o_tmpmemctx );
  69         if( rs->sr_err != LDAP_SUCCESS ) {
  70                 Debug( LDAP_DEBUG_ANY,
  71                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  72                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  73                 goto cleanup;
  74         }
  75
  76         if( op->o_req_ndn.bv_len == 0 ) {
  77                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
  78                 /* protocolError would likely be a more appropriate error */
  79                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  80                         "cannot delete the root DSE" );
  81                 goto cleanup;
  82
  83         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
  84                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
  85                 /* protocolError would likely be a more appropriate error */
  86                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  87                         "cannot delete the root DSE" );
  88                 goto cleanup;
  89         }
  90
  91         Statslog( LDAP_DEBUG_STATS, "%s DEL dn=\"%s\"\n",
  92                 op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
  93
  94         op->o_bd = frontendDB;
  95         rs->sr_err = frontendDB->be_delete( op, rs );
  96
  97 cleanup:;
  98         slap_graduate_commit_csn( op );
  99
 100         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 101         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 102         return rs->sr_err;
 103 }
 104
 105 int
 106 fe_op_delete( Operation *op, SlapReply *rs )
 107 {
 108         struct berval   pdn = BER_BVNULL;
 109         int             manageDSAit;
 110
 111         manageDSAit = get_manageDSAit( op );
 112
 113         /*
 114          * We could be serving multiple database backends.  Select the
 115          * appropriate one, or send a referral to our "referral server"
 116          * if we don't hold it.
 117          */
 118         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
 119         if ( op->o_bd == NULL ) {
 120                 rs->sr_ref = referral_rewrite( default_referral,
 121                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 122
 123                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 124                 if ( rs->sr_ref != NULL ) {
 125                         rs->sr_err = LDAP_REFERRAL;
 126
 127                         op->o_bd = frontendDB;
 128                         send_ldap_result( op, rs );
 129                         op->o_bd = NULL;
 130
 131                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 132                 } else {
 133                         op->o_bd = frontendDB;
 134                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 135                                 "no global superior knowledge" );
 136                         op->o_bd = NULL;
 137                 }
 138                 goto cleanup;
 139         }
 140
 141         /* check restrictions */
 142         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 143                 send_ldap_result( op, rs );
 144                 goto cleanup;
 145         }
 146
 147         /* check for referrals */
 148         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 149                 goto cleanup;
 150         }
 151
 152 #if defined( LDAP_SLAPI )
 153 #define pb op->o_pb
 154         if ( pb ) {
 155                 slapi_int_pblock_set_operation( pb, op );
 156                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)op->o_req_dn.bv_val );
 157                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 158
 159                 rs->sr_err = slapi_int_call_plugins( op->o_bd,
 160                         SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 161                 if ( rs->sr_err < 0 ) {
 162                         /*
 163                          * A preoperation plugin failure will abort the
 164                          * entire operation.
 165                          */
 166                         Debug (LDAP_DEBUG_TRACE, "do_delete: "
 167                                 "delete preoperation plugin failed.\n", 0, 0, 0);
 168                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE,
 169                                 (void *)&rs->sr_err ) != 0 ) ||
 170                                 rs->sr_err == LDAP_SUCCESS )
 171                         {
 172                                 rs->sr_err = LDAP_OTHER;
 173                         }
 174                         goto cleanup;
 175                 }
 176         }
 177 #endif /* defined( LDAP_SLAPI ) */
 178
 179         /*
 180          * do the delete if 1 && (2 || 3)
 181          * 1) there is a delete function implemented in this backend;
 182          * 2) this backend is master for what it holds;
 183          * 3) it's a replica and the dn supplied is the update_ndn.
 184          */
 185         if ( op->o_bd->be_delete ) {
 186                 /* do the update here */
 187                 int repl_user = be_isupdate( op );
 188 #ifndef SLAPD_MULTIMASTER
 189                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 190 #endif
 191                 {
 192                         struct berval   org_req_dn = BER_BVNULL;
 193                         struct berval   org_req_ndn = BER_BVNULL;
 194                         struct berval   org_dn = BER_BVNULL;
 195                         struct berval   org_ndn = BER_BVNULL;
 196                         int             org_managedsait;
 197                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 198
 199                         if ( !repl_user ) {
 200                                 struct berval csn = BER_BVNULL;
 201                                 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
 202                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 203                         }
 204
 205 #ifdef SLAPD_MULTIMASTER
 206                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 207 #endif
 208                         {
 209                                 cb.sc_next = op->o_callback;
 210                                 op->o_callback = &cb;
 211                         }
 212
 213                         op->o_bd->be_delete( op, rs );
 214
 215                         org_req_dn = op->o_req_dn;
 216                         org_req_ndn = op->o_req_ndn;
 217                         org_dn = op->o_dn;
 218                         org_ndn = op->o_ndn;
 219                         org_managedsait = get_manageDSAit( op );
 220                         op->o_dn = op->o_bd->be_rootdn;
 221                         op->o_ndn = op->o_bd->be_rootndn;
 222                         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 223
 224                         while ( rs->sr_err == LDAP_SUCCESS &&
 225                                 op->o_delete_glue_parent )
 226                         {
 227                                 op->o_delete_glue_parent = 0;
 228                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 229                                         slap_callback cb = { NULL };
 230                                         cb.sc_response = slap_null_cb;
 231                                         dnParent( &op->o_req_ndn, &pdn );
 232                                         op->o_req_dn = pdn;
 233                                         op->o_req_ndn = pdn;
 234                                         op->o_callback = &cb;
 235                                         op->o_bd->be_delete( op, rs );
 236                                 } else {
 237                                         break;
 238                                 }
 239                         }
 240
 241                         op->o_managedsait = org_managedsait;
 242                         op->o_dn = org_dn;
 243                         op->o_ndn = org_ndn;
 244                         op->o_req_dn = org_req_dn;
 245                         op->o_req_ndn = org_req_ndn;
 246                         op->o_delete_glue_parent = 0;
 247
 248 #ifndef SLAPD_MULTIMASTER
 249                 } else {
 250                         BerVarray defref = op->o_bd->be_update_refs
 251                                 ? op->o_bd->be_update_refs : default_referral;
 252
 253                         if ( defref != NULL ) {
 254                                 rs->sr_ref = referral_rewrite( defref,
 255                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 256                                 if (!rs->sr_ref) rs->sr_ref = defref;
 257                                 rs->sr_err = LDAP_REFERRAL;
 258                                 send_ldap_result( op, rs );
 259
 260                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 261
 262                         } else {
 263                                 send_ldap_error( op, rs,
 264                                         LDAP_UNWILLING_TO_PERFORM,
 265                                         "shadow context; no update referral" );
 266                         }
 267 #endif
 268                 }
 269
 270         } else {
 271                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 272                         "operation not supported within namingContext" );
 273         }
 274
 275 #if defined( LDAP_SLAPI )
 276         if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
 277                 SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0)
 278         {
 279                 Debug(LDAP_DEBUG_TRACE,
 280                         "do_delete: delete postoperation plugins failed\n",
 281                         0, 0, 0 );
 282         }
 283 #endif /* defined( LDAP_SLAPI ) */
 284
 285 cleanup:;
 286         return rs->sr_err;
 287 }