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