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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /*
   7  * Copyright (c) 1995 Regents of the University of Michigan.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms are permitted
  11  * provided that this notice is preserved and that due credit is given
  12  * to the University of Michigan at Ann Arbor. The name of the University
  13  * may not be used to endorse or promote products derived from this
  14  * software without specific prior written permission. This software
  15  * is provided ``as is'' without express or implied warranty.
  16  */
  17
  18 #include "portable.h"
  19
  20 #include <stdio.h>
  21
  22 #include <ac/string.h>
  23 #include <ac/socket.h>
  24
  25 #include "ldap_pvt.h"
  26 #include "slap.h"
  27
  28 #include "lutil.h"
  29
  30 #ifdef LDAP_SLAPI
  31 #include "slapi.h"
  32 #endif
  33
  34 int
  35 do_delete(
  36     Operation   *op,
  37     SlapReply   *rs
  38 )
  39 {
  40         struct berval dn = { 0, NULL };
  41         int manageDSAit;
  42
  43 #ifdef NEW_LOGGING
  44         LDAP_LOG( OPERATION, ENTRY,
  45                 "do_delete: conn %d\n", op->o_connid, 0, 0 );
  46 #else
  47         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  48 #endif
  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 #ifdef NEW_LOGGING
  58                 LDAP_LOG( OPERATION, ERR,
  59                         "do_delete: conn: %d  ber_scanf failed\n", op->o_connid, 0, 0 );
  60 #else
  61                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  62 #endif
  63                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  64                 return SLAPD_DISCONNECT;
  65         }
  66
  67         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  68 #ifdef NEW_LOGGING
  69                 LDAP_LOG( OPERATION, ERR,
  70                         "do_delete: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
  71 #else
  72                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  73 #endif
  74                 goto cleanup;
  75         }
  76
  77         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
  78         if( rs->sr_err != LDAP_SUCCESS ) {
  79 #ifdef NEW_LOGGING
  80                 LDAP_LOG( OPERATION, INFO,
  81                         "do_delete: conn %d  invalid dn (%s)\n",
  82                         op->o_connid, dn.bv_val, 0 );
  83 #else
  84                 Debug( LDAP_DEBUG_ANY,
  85                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  86 #endif
  87                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  88                 goto cleanup;
  89         }
  90
  91         if( op->o_req_ndn.bv_len == 0 ) {
  92 #ifdef NEW_LOGGING
  93                 LDAP_LOG( OPERATION, INFO,
  94                         "do_delete: conn %d: Attempt to delete root DSE.\n",
  95                         op->o_connid, 0, 0 );
  96 #else
  97                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
  98 #endif
  99                 /* protocolError would likely be a more appropriate error */
 100                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 101                         "cannot delete the root DSE" );
 102                 goto cleanup;
 103
 104         } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG( OPERATION, INFO, "do_delete: conn %d: "
 107                         "Attempt to delete subschema subentry.\n", op->o_connid, 0, 0 );
 108 #else
 109                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 110 #endif
 111                 /* protocolError would likely be a more appropriate error */
 112                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 113                         "cannot delete the root DSE" );
 114                 goto cleanup;
 115         }
 116
 117         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
 118                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
 119
 120         manageDSAit = get_manageDSAit( op );
 121
 122         /*
 123          * We could be serving multiple database backends.  Select the
 124          * appropriate one, or send a referral to our "referral server"
 125          * if we don't hold it.
 126          */
 127         if ( (op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 )) == NULL ) {
 128                 rs->sr_ref = referral_rewrite( default_referral,
 129                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 130
 131                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 132                 if ( rs->sr_ref != NULL ) {
 133                         rs->sr_err = LDAP_REFERRAL;
 134
 135                         send_ldap_result( op, rs );
 136
 137                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 138                 } else {
 139                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 140                                         "referral missing" );
 141                 }
 142                 goto cleanup;
 143         }
 144
 145         /* check restrictions */
 146         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 147                 send_ldap_result( op, rs );
 148                 goto cleanup;
 149         }
 150
 151         /* check for referrals */
 152         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 153                 goto cleanup;
 154         }
 155
 156 #if defined( LDAP_SLAPI )
 157 #define pb op->o_pb
 158         if ( pb ) {
 159                 slapi_x_pblock_set_operation( pb, op );
 160                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)dn.bv_val );
 161                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 162
 163                 rs->sr_err = doPluginFNs( op->o_bd, SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 164                 if ( rs->sr_err < 0 ) {
 165                         /*
 166                          * A preoperation plugin failure will abort the
 167                          * entire operation.
 168                          */
 169 #ifdef NEW_LOGGING
 170                         LDAP_LOG( OPERATION, INFO, "do_delete: delete preoperation plugin "
 171                                         "failed\n", 0, 0, 0 );
 172 #else
 173                         Debug (LDAP_DEBUG_TRACE, "do_delete: delete preoperation plugin failed.\n",
 174                                         0, 0, 0);
 175 #endif
 176                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
 177                                  rs->sr_err == LDAP_SUCCESS ) {
 178                                 rs->sr_err = LDAP_OTHER;
 179                         }
 180                         goto cleanup;
 181                 }
 182         }
 183 #endif /* defined( LDAP_SLAPI ) */
 184
 185         /*
 186          * do the delete if 1 && (2 || 3)
 187          * 1) there is a delete function implemented in this backend;
 188          * 2) this backend is master for what it holds;
 189          * 3) it's a replica and the dn supplied is the update_ndn.
 190          */
 191         if ( op->o_bd->be_delete ) {
 192                 /* do the update here */
 193                 int repl_user = be_isupdate( op->o_bd, &op->o_ndn );
 194 #ifndef SLAPD_MULTIMASTER
 195                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo ) &&
 196                         ( !op->o_bd->be_update_ndn.bv_len || repl_user ))
 197 #else
 198                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo ))
 199 #endif
 200                 {
 201
 202                         if ( !repl_user ) {
 203                                 struct berval csn = { 0 , NULL };
 204                                 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 205                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 206                         }
 207
 208                         if ( (op->o_bd->be_delete)( op, rs ) == 0 ) {
 209 #ifdef SLAPD_MULTIMASTER
 210                                 if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 211 #endif
 212                                 {
 213                                         replog( op );
 214                                 }
 215                         }
 216 #ifndef SLAPD_MULTIMASTER
 217                 } else {
 218                         BerVarray defref = NULL;
 219                         if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 220                                 syncinfo_t *si;
 221                                 LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
 222                                         struct berval tmpbv;
 223                                         ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
 224                                         ber_bvarray_add( &defref, &tmpbv );
 225                                 }
 226                         } else {
 227                                 defref = op->o_bd->be_update_refs
 228                                         ? op->o_bd->be_update_refs : default_referral;
 229                         }
 230                         if ( defref != NULL ) {
 231                                 rs->sr_ref = referral_rewrite( defref,
 232                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 233                                 if (!rs->sr_ref) rs->sr_ref = defref;
 234                                 rs->sr_err = LDAP_REFERRAL;
 235                                 send_ldap_result( op, rs );
 236
 237                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 238                         } else {
 239                                 send_ldap_error( op, rs,
 240                                                 LDAP_UNWILLING_TO_PERFORM,
 241                                                 "referral missing" );
 242                         }
 243 #endif
 244                 }
 245
 246         } else {
 247                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 248                         "operation not supported within namingContext" );
 249         }
 250
 251 #if defined( LDAP_SLAPI )
 252         if ( pb && doPluginFNs( op->o_bd, SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0) {
 253 #ifdef NEW_LOGGING
 254                 LDAP_LOG( OPERATION, INFO, "do_delete: delete postoperation plugins "
 255                                 "failed\n", 0, 0, 0 );
 256 #else
 257                 Debug(LDAP_DEBUG_TRACE, "do_delete: delete postoperation plugins "
 258                                 "failed.\n", 0, 0, 0);
 259 #endif
 260         }
 261 #endif /* defined( LDAP_SLAPI ) */
 262
 263 cleanup:
 264
 265         slap_graduate_commit_csn( op );
 266
 267         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 268         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 269         return rs->sr_err;
 270 }