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 = BER_BVNULL;
  49         struct berval pdn = BER_BVNULL;
  50         struct berval org_req_dn = BER_BVNULL;
  51         struct berval org_req_ndn = BER_BVNULL;
  52         struct berval org_dn = BER_BVNULL;
  53         struct berval org_ndn = BER_BVNULL;
  54         int     org_managedsait;
  55         int manageDSAit;
  56
  57 #ifdef NEW_LOGGING
  58         LDAP_LOG( OPERATION, ENTRY,
  59                 "do_delete: conn %d\n", op->o_connid, 0, 0 );
  60 #else
  61         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  62 #endif
  63
  64         /*
  65          * Parse the delete request.  It looks like this:
  66          *
  67          *      DelRequest := DistinguishedName
  68          */
  69
  70         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  71 #ifdef NEW_LOGGING
  72                 LDAP_LOG( OPERATION, ERR,
  73                         "do_delete: conn: %d  ber_scanf failed\n", op->o_connid, 0, 0 );
  74 #else
  75                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  76 #endif
  77                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  78                 return SLAPD_DISCONNECT;
  79         }
  80
  81         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  82 #ifdef NEW_LOGGING
  83                 LDAP_LOG( OPERATION, ERR,
  84                         "do_delete: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
  85 #else
  86                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  87 #endif
  88                 goto cleanup;
  89         }
  90
  91         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
  92         if( rs->sr_err != LDAP_SUCCESS ) {
  93 #ifdef NEW_LOGGING
  94                 LDAP_LOG( OPERATION, INFO,
  95                         "do_delete: conn %d  invalid dn (%s)\n",
  96                         op->o_connid, dn.bv_val, 0 );
  97 #else
  98                 Debug( LDAP_DEBUG_ANY,
  99                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
 100 #endif
 101                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 102                 goto cleanup;
 103         }
 104
 105         if( op->o_req_ndn.bv_len == 0 ) {
 106 #ifdef NEW_LOGGING
 107                 LDAP_LOG( OPERATION, INFO,
 108                         "do_delete: conn %d: Attempt to delete root DSE.\n",
 109                         op->o_connid, 0, 0 );
 110 #else
 111                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
 112 #endif
 113                 /* protocolError would likely be a more appropriate error */
 114                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 115                         "cannot delete the root DSE" );
 116                 goto cleanup;
 117
 118         } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
 119 #ifdef NEW_LOGGING
 120                 LDAP_LOG( OPERATION, INFO, "do_delete: conn %d: "
 121                         "Attempt to delete subschema subentry.\n", op->o_connid, 0, 0 );
 122 #else
 123                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 124 #endif
 125                 /* protocolError would likely be a more appropriate error */
 126                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 127                         "cannot delete the root DSE" );
 128                 goto cleanup;
 129         }
 130
 131         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
 132                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
 133
 134         manageDSAit = get_manageDSAit( op );
 135
 136         /*
 137          * We could be serving multiple database backends.  Select the
 138          * appropriate one, or send a referral to our "referral server"
 139          * if we don't hold it.
 140          */
 141         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 142         if ( op->o_bd == NULL ) {
 143                 rs->sr_ref = referral_rewrite( default_referral,
 144                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 145
 146                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 147                 if ( rs->sr_ref != NULL ) {
 148                         rs->sr_err = LDAP_REFERRAL;
 149
 150                         send_ldap_result( op, rs );
 151
 152                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 153                 } else {
 154                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 155                                 "no global superior knowledge" );
 156                 }
 157                 goto cleanup;
 158         }
 159
 160         /* check restrictions */
 161         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 162                 send_ldap_result( op, rs );
 163                 goto cleanup;
 164         }
 165
 166         /* check for referrals */
 167         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 168                 goto cleanup;
 169         }
 170
 171 #if defined( LDAP_SLAPI )
 172 #define pb op->o_pb
 173         if ( pb ) {
 174                 slapi_int_pblock_set_operation( pb, op );
 175                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)dn.bv_val );
 176                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 177
 178                 rs->sr_err = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 179                 if ( rs->sr_err < 0 ) {
 180                         /*
 181                          * A preoperation plugin failure will abort the
 182                          * entire operation.
 183                          */
 184 #ifdef NEW_LOGGING
 185                         LDAP_LOG( OPERATION, INFO, "do_delete: delete preoperation plugin "
 186                                         "failed\n", 0, 0, 0 );
 187 #else
 188                         Debug (LDAP_DEBUG_TRACE, "do_delete: delete preoperation plugin failed.\n",
 189                                         0, 0, 0);
 190 #endif
 191                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
 192                                  rs->sr_err == LDAP_SUCCESS ) {
 193                                 rs->sr_err = LDAP_OTHER;
 194                         }
 195                         goto cleanup;
 196                 }
 197         }
 198 #endif /* defined( LDAP_SLAPI ) */
 199
 200         /*
 201          * do the delete if 1 && (2 || 3)
 202          * 1) there is a delete function implemented in this backend;
 203          * 2) this backend is master for what it holds;
 204          * 3) it's a replica and the dn supplied is the update_ndn.
 205          */
 206         if ( op->o_bd->be_delete ) {
 207                 /* do the update here */
 208                 int repl_user = be_isupdate( op );
 209 #ifndef SLAPD_MULTIMASTER
 210                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 211 #endif
 212                 {
 213                         slap_callback cb = { NULL, slap_replog_cb, NULL, NULL };
 214                         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 215
 216                         if ( !repl_user ) {
 217                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &op->ord_csn, 1 );
 218                         }
 219
 220 #ifdef SLAPD_MULTIMASTER
 221                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 222 #endif
 223                         {
 224                                 cb.sc_next = op->o_callback;
 225                                 op->o_callback = &cb;
 226                         }
 227
 228                         op->o_bd->be_delete( op, rs );
 229
 230                         org_req_dn = op->o_req_dn;
 231                         org_req_ndn = op->o_req_ndn;
 232                         org_dn = op->o_dn;
 233                         org_ndn = op->o_ndn;
 234                         org_managedsait = get_manageDSAit( op );
 235                         op->o_dn = op->o_bd->be_rootdn;
 236                         op->o_ndn = op->o_bd->be_rootndn;
 237                         op->o_managedsait = 1;
 238
 239                         while ( rs->sr_err == LDAP_SUCCESS &&
 240                                 op->o_delete_glue_parent )
 241                         {
 242                                 op->o_delete_glue_parent = 0;
 243                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 244                                         slap_callback cb = { NULL };
 245                                         cb.sc_response = slap_null_cb;
 246                                         dnParent( &op->o_req_ndn, &pdn );
 247                                         op->o_req_dn = pdn;
 248                                         op->o_req_ndn = pdn;
 249                                         op->o_callback = &cb;
 250                                         op->o_bd->be_delete( op, rs );
 251                                 } else {
 252                                         break;
 253                                 }
 254                         }
 255
 256                         op->o_managedsait = org_managedsait;
 257                         op->o_dn = org_dn;
 258                         op->o_ndn = org_ndn;
 259                         op->o_req_dn = org_req_dn;
 260                         op->o_req_ndn = org_req_ndn;
 261                         op->o_delete_glue_parent = 0;
 262
 263 #ifndef SLAPD_MULTIMASTER
 264                 } else {
 265                         BerVarray defref = op->o_bd->be_update_refs
 266                                 ? op->o_bd->be_update_refs : default_referral;
 267
 268                         if ( defref != NULL ) {
 269                                 rs->sr_ref = referral_rewrite( defref,
 270                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 271                                 if (!rs->sr_ref) rs->sr_ref = defref;
 272                                 rs->sr_err = LDAP_REFERRAL;
 273                                 send_ldap_result( op, rs );
 274
 275                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 276
 277                         } else {
 278                                 send_ldap_error( op, rs,
 279                                         LDAP_UNWILLING_TO_PERFORM,
 280                                         "shadow context; no update referral" );
 281                         }
 282 #endif
 283                 }
 284
 285         } else {
 286                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 287                         "operation not supported within namingContext" );
 288         }
 289
 290 #if defined( LDAP_SLAPI )
 291         if ( pb != NULL && slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0) {
 292 #ifdef NEW_LOGGING
 293                 LDAP_LOG( OPERATION, INFO, "do_delete: delete postoperation plugins "
 294                                 "failed\n", 0, 0, 0 );
 295 #else
 296                 Debug(LDAP_DEBUG_TRACE, "do_delete: delete postoperation plugins "
 297                                 "failed.\n", 0, 0, 0);
 298 #endif
 299         }
 300 #endif /* defined( LDAP_SLAPI ) */
 301
 302 cleanup:
 303
 304         slap_graduate_commit_csn( op );
 305
 306         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 307         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 308         return rs->sr_err;
 309 }