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 #ifdef LDAP_SYNC
  29 #include "lutil.h"
  30 #endif
  31
  32 #ifdef LDAP_SLAPI
  33 #include "slapi.h"
  34 #endif
  35
  36 int
  37 do_delete(
  38     Operation   *op,
  39     SlapReply   *rs
  40 )
  41 {
  42         struct berval dn = { 0, NULL };
  43         int manageDSAit;
  44
  45 #ifdef LDAP_SLAPI
  46         Slapi_PBlock *pb = op->o_pb;
  47 #endif
  48
  49 #ifdef NEW_LOGGING
  50         LDAP_LOG( OPERATION, ENTRY,
  51                 "do_delete: conn %d\n", op->o_connid, 0, 0 );
  52 #else
  53         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  54 #endif
  55
  56         /*
  57          * Parse the delete request.  It looks like this:
  58          *
  59          *      DelRequest := DistinguishedName
  60          */
  61
  62         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  63 #ifdef NEW_LOGGING
  64                 LDAP_LOG( OPERATION, ERR,
  65                         "do_delete: conn: %d  ber_scanf failed\n", op->o_connid, 0, 0 );
  66 #else
  67                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  68 #endif
  69                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  70                 return SLAPD_DISCONNECT;
  71         }
  72
  73         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  74 #ifdef NEW_LOGGING
  75                 LDAP_LOG( OPERATION, ERR,
  76                         "do_delete: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
  77 #else
  78                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  79 #endif
  80                 goto cleanup;
  81         }
  82
  83         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
  84         if( rs->sr_err != LDAP_SUCCESS ) {
  85 #ifdef NEW_LOGGING
  86                 LDAP_LOG( OPERATION, INFO,
  87                         "do_delete: conn %d  invalid dn (%s)\n",
  88                         op->o_connid, dn.bv_val, 0 );
  89 #else
  90                 Debug( LDAP_DEBUG_ANY,
  91                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  92 #endif
  93                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  94                 goto cleanup;
  95         }
  96
  97         if( op->o_req_ndn.bv_len == 0 ) {
  98 #ifdef NEW_LOGGING
  99                 LDAP_LOG( OPERATION, INFO,
 100                         "do_delete: conn %d: Attempt to delete root DSE.\n",
 101                         op->o_connid, 0, 0 );
 102 #else
 103                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
 104 #endif
 105                 /* protocolError would likely be a more appropriate error */
 106                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 107                         "cannot delete the root DSE" );
 108                 goto cleanup;
 109
 110         } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
 111 #ifdef NEW_LOGGING
 112                 LDAP_LOG( OPERATION, INFO, "do_delete: conn %d: "
 113                         "Attempt to delete subschema subentry.\n", op->o_connid, 0, 0 );
 114 #else
 115                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 116 #endif
 117                 /* protocolError would likely be a more appropriate error */
 118                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 119                         "cannot delete the root DSE" );
 120                 goto cleanup;
 121         }
 122
 123         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
 124                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
 125
 126         manageDSAit = get_manageDSAit( op );
 127
 128         /*
 129          * We could be serving multiple database backends.  Select the
 130          * appropriate one, or send a referral to our "referral server"
 131          * if we don't hold it.
 132          */
 133         if ( (op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 )) == NULL ) {
 134                 rs->sr_ref = referral_rewrite( default_referral,
 135                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 136
 137                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 138                 if ( rs->sr_ref != NULL ) {
 139                         rs->sr_err = LDAP_REFERRAL;
 140
 141                         send_ldap_result( op, rs );
 142
 143                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 144                 } else {
 145                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 146                                         "referral missing" );
 147                 }
 148                 goto cleanup;
 149         }
 150
 151         /* check restrictions */
 152         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 153                 send_ldap_result( op, rs );
 154                 goto cleanup;
 155         }
 156
 157         /* check for referrals */
 158         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 159                 goto cleanup;
 160         }
 161
 162 #if defined( LDAP_SLAPI )
 163         slapi_x_pblock_set_operation( pb, op );
 164         slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)dn.bv_val );
 165         slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 166
 167         rs->sr_err = doPluginFNs( op->o_bd, SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 168         if ( rs->sr_err < 0 ) {
 169                 /*
 170                  * A preoperation plugin failure will abort the
 171                  * entire operation.
 172                  */
 173 #ifdef NEW_LOGGING
 174                 LDAP_LOG( OPERATION, INFO, "do_delete: delete preoperation plugin "
 175                                 "failed\n", 0, 0, 0 );
 176 #else
 177                 Debug (LDAP_DEBUG_TRACE, "do_delete: delete preoperation plugin failed.\n",
 178                                 0, 0, 0);
 179 #endif
 180                 if ( ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
 181                      rs->sr_err == LDAP_SUCCESS ) {
 182                         rs->sr_err = LDAP_OTHER;
 183                 }
 184                 goto cleanup;
 185         }
 186 #endif /* defined( LDAP_SLAPI ) */
 187
 188         /*
 189          * do the delete if 1 && (2 || 3)
 190          * 1) there is a delete function implemented in this backend;
 191          * 2) this backend is master for what it holds;
 192          * 3) it's a replica and the dn supplied is the update_ndn.
 193          */
 194         if ( op->o_bd->be_delete ) {
 195                 /* do the update here */
 196                 int repl_user = be_isupdate( op->o_bd, &op->o_ndn );
 197 #if defined(LDAP_SYNCREPL) && !defined(SLAPD_MULTIMASTER)
 198                 if ( !op->o_bd->syncinfo && ( !op->o_bd->be_update_ndn.bv_len || repl_user ))
 199 #elif defined(LDAP_SYNCREPL) && defined(SLAPD_MULTIMASTER)
 200                 if ( !op->o_bd->syncinfo )  /* LDAP_SYNCREPL overrides MM */
 201 #elif !defined(LDAP_SYNCREPL) && !defined(SLAPD_MULTIMASTER)
 202                 if ( !op->o_bd->be_update_ndn.bv_len || repl_user )
 203 #endif
 204                 {
 205
 206 #ifdef LDAP_SYNC
 207                         if ( !repl_user ) {
 208                                 struct berval csn = { 0 , NULL };
 209                                 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 210                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 211                         }
 212 #endif
 213
 214                         if ( (op->o_bd->be_delete)( op, rs ) == 0 ) {
 215 #ifdef SLAPD_MULTIMASTER
 216                                 if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 217 #endif
 218                                 {
 219                                         replog( op );
 220                                 }
 221                         }
 222 #if defined(LDAP_SYNCREPL) || !defined(SLAPD_MULTIMASTER)
 223                 } else {
 224                         BerVarray defref = NULL;
 225 #ifdef LDAP_SYNCREPL
 226                         if ( op->o_bd->syncinfo ) {
 227                                 defref = op->o_bd->syncinfo->provideruri_bv;
 228                         } else
 229 #endif
 230                         {
 231                                 defref = op->o_bd->be_update_refs
 232                                                 ? op->o_bd->be_update_refs : default_referral;
 233                         }
 234                         if ( defref != NULL ) {
 235                                 rs->sr_ref = referral_rewrite( defref,
 236                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 237                                 if (!rs->sr_ref) rs->sr_ref = defref;
 238                                 rs->sr_err = LDAP_REFERRAL;
 239                                 send_ldap_result( op, rs );
 240
 241                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 242                         } else {
 243                                 send_ldap_error( op, rs,
 244                                                 LDAP_UNWILLING_TO_PERFORM,
 245                                                 "referral missing" );
 246                         }
 247 #endif
 248                 }
 249
 250         } else {
 251                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 252                         "operation not supported within namingContext" );
 253         }
 254
 255 #if defined( LDAP_SLAPI )
 256         if ( doPluginFNs( op->o_bd, SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0) {
 257 #ifdef NEW_LOGGING
 258                 LDAP_LOG( OPERATION, INFO, "do_delete: delete postoperation plugins "
 259                                 "failed\n", 0, 0, 0 );
 260 #else
 261                 Debug(LDAP_DEBUG_TRACE, "do_delete: delete postoperation plugins "
 262                                 "failed.\n", 0, 0, 0);
 263 #endif
 264         }
 265 #endif /* defined( LDAP_SLAPI ) */
 266
 267 cleanup:
 268
 269 #ifdef LDAP_SYNC
 270         slap_graduate_commit_csn( op );
 271 #endif
 272
 273         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 274         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 275         return rs->sr_err;
 276 }