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 1998-2004 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, 0 );
 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                         send_ldap_result( op, rs );
 128
 129                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 130                 } else {
 131                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 132                                 "no global superior knowledge" );
 133                 }
 134                 goto cleanup;
 135         }
 136
 137         /* check restrictions */
 138         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 139                 send_ldap_result( op, rs );
 140                 goto cleanup;
 141         }
 142
 143         /* check for referrals */
 144         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 145                 goto cleanup;
 146         }
 147
 148 #if defined( LDAP_SLAPI )
 149 #define pb op->o_pb
 150         if ( pb ) {
 151                 slapi_int_pblock_set_operation( pb, op );
 152                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)op->o_req_dn.bv_val );
 153                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 154
 155                 rs->sr_err = slapi_int_call_plugins( op->o_bd,
 156                         SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 157                 if ( rs->sr_err < 0 ) {
 158                         /*
 159                          * A preoperation plugin failure will abort the
 160                          * entire operation.
 161                          */
 162                         Debug (LDAP_DEBUG_TRACE, "do_delete: "
 163                                 "delete preoperation plugin failed.\n", 0, 0, 0);
 164                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE,
 165                                 (void *)&rs->sr_err ) != 0 ) ||
 166                                 rs->sr_err == LDAP_SUCCESS )
 167                         {
 168                                 rs->sr_err = LDAP_OTHER;
 169                         }
 170                         goto cleanup;
 171                 }
 172         }
 173 #endif /* defined( LDAP_SLAPI ) */
 174
 175         /*
 176          * do the delete if 1 && (2 || 3)
 177          * 1) there is a delete function implemented in this backend;
 178          * 2) this backend is master for what it holds;
 179          * 3) it's a replica and the dn supplied is the update_ndn.
 180          */
 181         if ( op->o_bd->be_delete ) {
 182                 /* do the update here */
 183                 int repl_user = be_isupdate( op );
 184 #ifndef SLAPD_MULTIMASTER
 185                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 186 #endif
 187                 {
 188                         struct berval   org_req_dn = BER_BVNULL;
 189                         struct berval   org_req_ndn = BER_BVNULL;
 190                         struct berval   org_dn = BER_BVNULL;
 191                         struct berval   org_ndn = BER_BVNULL;
 192                         int             org_managedsait;
 193                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 194
 195                         if ( !repl_user ) {
 196                                 struct berval csn = BER_BVNULL;
 197                                 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
 198                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 199                         }
 200
 201 #ifdef SLAPD_MULTIMASTER
 202                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 203 #endif
 204                         {
 205                                 cb.sc_next = op->o_callback;
 206                                 op->o_callback = &cb;
 207                         }
 208
 209                         op->o_bd->be_delete( op, rs );
 210
 211                         org_req_dn = op->o_req_dn;
 212                         org_req_ndn = op->o_req_ndn;
 213                         org_dn = op->o_dn;
 214                         org_ndn = op->o_ndn;
 215                         org_managedsait = get_manageDSAit( op );
 216                         op->o_dn = op->o_bd->be_rootdn;
 217                         op->o_ndn = op->o_bd->be_rootndn;
 218                         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 219
 220                         while ( rs->sr_err == LDAP_SUCCESS &&
 221                                 op->o_delete_glue_parent )
 222                         {
 223                                 op->o_delete_glue_parent = 0;
 224                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 225                                         slap_callback cb = { NULL };
 226                                         cb.sc_response = slap_null_cb;
 227                                         dnParent( &op->o_req_ndn, &pdn );
 228                                         op->o_req_dn = pdn;
 229                                         op->o_req_ndn = pdn;
 230                                         op->o_callback = &cb;
 231                                         op->o_bd->be_delete( op, rs );
 232                                 } else {
 233                                         break;
 234                                 }
 235                         }
 236
 237                         op->o_managedsait = org_managedsait;
 238                         op->o_dn = org_dn;
 239                         op->o_ndn = org_ndn;
 240                         op->o_req_dn = org_req_dn;
 241                         op->o_req_ndn = org_req_ndn;
 242                         op->o_delete_glue_parent = 0;
 243
 244 #ifndef SLAPD_MULTIMASTER
 245                 } else {
 246                         BerVarray defref = op->o_bd->be_update_refs
 247                                 ? op->o_bd->be_update_refs : default_referral;
 248
 249                         if ( defref != NULL ) {
 250                                 rs->sr_ref = referral_rewrite( defref,
 251                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 252                                 if (!rs->sr_ref) rs->sr_ref = defref;
 253                                 rs->sr_err = LDAP_REFERRAL;
 254                                 send_ldap_result( op, rs );
 255
 256                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 257
 258                         } else {
 259                                 send_ldap_error( op, rs,
 260                                         LDAP_UNWILLING_TO_PERFORM,
 261                                         "shadow context; no update referral" );
 262                         }
 263 #endif
 264                 }
 265
 266         } else {
 267                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 268                         "operation not supported within namingContext" );
 269         }
 270
 271 #if defined( LDAP_SLAPI )
 272         if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
 273                 SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0)
 274         {
 275                 Debug(LDAP_DEBUG_TRACE,
 276                         "do_delete: delete postoperation plugins failed\n",
 277                         0, 0, 0 );
 278         }
 279 #endif /* defined( LDAP_SLAPI ) */
 280
 281 cleanup:;
 282         return rs->sr_err;
 283 }