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 "ldap_pvt.h"
  34 #include "slap.h"
  35
  36 #include "lutil.h"
  37
  38 #ifdef LDAP_SLAPI
  39 #include "slapi/slapi.h"
  40 #endif
  41
  42 int
  43 do_delete(
  44     Operation   *op,
  45     SlapReply   *rs
  46 )
  47 {
  48         struct berval dn = { 0, NULL };
  49         int manageDSAit;
  50
  51 #ifdef NEW_LOGGING
  52         LDAP_LOG( OPERATION, ENTRY,
  53                 "do_delete: conn %d\n", op->o_connid, 0, 0 );
  54 #else
  55         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  56 #endif
  57
  58         /*
  59          * Parse the delete request.  It looks like this:
  60          *
  61          *      DelRequest := DistinguishedName
  62          */
  63
  64         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  65 #ifdef NEW_LOGGING
  66                 LDAP_LOG( OPERATION, ERR,
  67                         "do_delete: conn: %d  ber_scanf failed\n", op->o_connid, 0, 0 );
  68 #else
  69                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  70 #endif
  71                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  72                 return SLAPD_DISCONNECT;
  73         }
  74
  75         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  76 #ifdef NEW_LOGGING
  77                 LDAP_LOG( OPERATION, ERR,
  78                         "do_delete: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
  79 #else
  80                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  81 #endif
  82                 goto cleanup;
  83         }
  84
  85         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
  86         if( rs->sr_err != LDAP_SUCCESS ) {
  87 #ifdef NEW_LOGGING
  88                 LDAP_LOG( OPERATION, INFO,
  89                         "do_delete: conn %d  invalid dn (%s)\n",
  90                         op->o_connid, dn.bv_val, 0 );
  91 #else
  92                 Debug( LDAP_DEBUG_ANY,
  93                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  94 #endif
  95                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  96                 goto cleanup;
  97         }
  98
  99         if( op->o_req_ndn.bv_len == 0 ) {
 100 #ifdef NEW_LOGGING
 101                 LDAP_LOG( OPERATION, INFO,
 102                         "do_delete: conn %d: Attempt to delete root DSE.\n",
 103                         op->o_connid, 0, 0 );
 104 #else
 105                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
 106 #endif
 107                 /* protocolError would likely be a more appropriate error */
 108                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 109                         "cannot delete the root DSE" );
 110                 goto cleanup;
 111
 112         } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
 113 #ifdef NEW_LOGGING
 114                 LDAP_LOG( OPERATION, INFO, "do_delete: conn %d: "
 115                         "Attempt to delete subschema subentry.\n", op->o_connid, 0, 0 );
 116 #else
 117                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 118 #endif
 119                 /* protocolError would likely be a more appropriate error */
 120                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 121                         "cannot delete the root DSE" );
 122                 goto cleanup;
 123         }
 124
 125         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
 126                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
 127
 128         manageDSAit = get_manageDSAit( op );
 129
 130         /*
 131          * We could be serving multiple database backends.  Select the
 132          * appropriate one, or send a referral to our "referral server"
 133          * if we don't hold it.
 134          */
 135         if ( (op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 )) == NULL ) {
 136                 rs->sr_ref = referral_rewrite( default_referral,
 137                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 138
 139                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 140                 if ( rs->sr_ref != NULL ) {
 141                         rs->sr_err = LDAP_REFERRAL;
 142
 143                         send_ldap_result( op, rs );
 144
 145                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 146                 } else {
 147                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 148                                         "referral missing" );
 149                 }
 150                 goto cleanup;
 151         }
 152
 153         /* check restrictions */
 154         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 155                 send_ldap_result( op, rs );
 156                 goto cleanup;
 157         }
 158
 159         /* check for referrals */
 160         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 161                 goto cleanup;
 162         }
 163
 164 #if defined( LDAP_SLAPI )
 165 #define pb op->o_pb
 166         if ( pb ) {
 167                 slapi_int_pblock_set_operation( pb, op );
 168                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)dn.bv_val );
 169                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 170
 171                 rs->sr_err = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 172                 if ( rs->sr_err < 0 ) {
 173                         /*
 174                          * A preoperation plugin failure will abort the
 175                          * entire operation.
 176                          */
 177 #ifdef NEW_LOGGING
 178                         LDAP_LOG( OPERATION, INFO, "do_delete: delete preoperation plugin "
 179                                         "failed\n", 0, 0, 0 );
 180 #else
 181                         Debug (LDAP_DEBUG_TRACE, "do_delete: delete preoperation plugin failed.\n",
 182                                         0, 0, 0);
 183 #endif
 184                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
 185                                  rs->sr_err == LDAP_SUCCESS ) {
 186                                 rs->sr_err = LDAP_OTHER;
 187                         }
 188                         goto cleanup;
 189                 }
 190         }
 191 #endif /* defined( LDAP_SLAPI ) */
 192
 193         /*
 194          * do the delete if 1 && (2 || 3)
 195          * 1) there is a delete function implemented in this backend;
 196          * 2) this backend is master for what it holds;
 197          * 3) it's a replica and the dn supplied is the update_ndn.
 198          */
 199         if ( op->o_bd->be_delete ) {
 200                 /* do the update here */
 201                 int repl_user = be_isupdate( op->o_bd, &op->o_ndn );
 202 #ifndef SLAPD_MULTIMASTER
 203                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo ) &&
 204                         ( !op->o_bd->be_update_ndn.bv_len || repl_user ))
 205 #else
 206                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo ))
 207 #endif
 208                 {
 209                         slap_callback cb = { NULL, slap_replog_cb, NULL, NULL };
 210
 211                         if ( !repl_user ) {
 212                                 struct berval csn = { 0 , NULL };
 213                                 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 214                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 215                         }
 216
 217 #ifdef SLAPD_MULTIMASTER
 218                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 219 #endif
 220                         {
 221                                 cb.sc_next = op->o_callback;
 222                                 op->o_callback = &cb;
 223                         }
 224                         op->o_bd->be_delete( op, rs );
 225 #ifndef SLAPD_MULTIMASTER
 226                 } else {
 227                         BerVarray defref = NULL;
 228                         if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 229                                 syncinfo_t *si;
 230                                 LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
 231                                         struct berval tmpbv;
 232                                         ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
 233                                         ber_bvarray_add( &defref, &tmpbv );
 234                                 }
 235                         } else {
 236                                 defref = op->o_bd->be_update_refs
 237                                         ? op->o_bd->be_update_refs : default_referral;
 238                         }
 239                         if ( defref != NULL ) {
 240                                 rs->sr_ref = referral_rewrite( defref,
 241                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 242                                 if (!rs->sr_ref) rs->sr_ref = defref;
 243                                 rs->sr_err = LDAP_REFERRAL;
 244                                 send_ldap_result( op, rs );
 245
 246                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 247                         } else {
 248                                 send_ldap_error( op, rs,
 249                                                 LDAP_UNWILLING_TO_PERFORM,
 250                                                 "referral missing" );
 251                         }
 252 #endif
 253                 }
 254
 255         } else {
 256                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 257                         "operation not supported within namingContext" );
 258         }
 259
 260 #if defined( LDAP_SLAPI )
 261         if ( pb != NULL && slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0) {
 262 #ifdef NEW_LOGGING
 263                 LDAP_LOG( OPERATION, INFO, "do_delete: delete postoperation plugins "
 264                                 "failed\n", 0, 0, 0 );
 265 #else
 266                 Debug(LDAP_DEBUG_TRACE, "do_delete: delete postoperation plugins "
 267                                 "failed.\n", 0, 0, 0);
 268 #endif
 269         }
 270 #endif /* defined( LDAP_SLAPI ) */
 271
 272 cleanup:
 273
 274         slap_graduate_commit_csn( op );
 275
 276         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 277         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 278         return rs->sr_err;
 279 }