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         struct berval dn = BER_BVNULL;
  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,
  84                 op->o_tmpmemctx );
  85         if( rs->sr_err != LDAP_SUCCESS ) {
  86 #ifdef NEW_LOGGING
  87                 LDAP_LOG( OPERATION, INFO,
  88                         "do_delete: conn %d  invalid dn (%s)\n",
  89                         op->o_connid, dn.bv_val, 0 );
  90 #else
  91                 Debug( LDAP_DEBUG_ANY,
  92                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  93 #endif
  94                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  95                 goto cleanup;
  96         }
  97
  98         if( op->o_req_ndn.bv_len == 0 ) {
  99 #ifdef NEW_LOGGING
 100                 LDAP_LOG( OPERATION, INFO,
 101                         "do_delete: conn %d: Attempt to delete root DSE.\n",
 102                         op->o_connid, 0, 0 );
 103 #else
 104                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
 105 #endif
 106                 /* protocolError would likely be a more appropriate error */
 107                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 108                         "cannot delete the root DSE" );
 109                 goto cleanup;
 110
 111         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 112 #ifdef NEW_LOGGING
 113                 LDAP_LOG( OPERATION, INFO, "do_delete: conn %d: "
 114                         "Attempt to delete subschema subentry.\n", op->o_connid, 0, 0 );
 115 #else
 116                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 117 #endif
 118                 /* protocolError would likely be a more appropriate error */
 119                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 120                         "cannot delete the root DSE" );
 121                 goto cleanup;
 122         }
 123
 124         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
 125                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
 126
 127         op->o_bd = frontendDB;
 128         rs->sr_err = frontendDB->be_delete( op, rs );
 129
 130 cleanup:;
 131         slap_graduate_commit_csn( op );
 132
 133         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 134         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 135         return rs->sr_err;
 136 }
 137
 138 int
 139 fe_op_delete( Operation *op, SlapReply *rs )
 140 {
 141         struct berval   pdn = BER_BVNULL;
 142         int             manageDSAit;
 143
 144         manageDSAit = get_manageDSAit( op );
 145
 146         /*
 147          * We could be serving multiple database backends.  Select the
 148          * appropriate one, or send a referral to our "referral server"
 149          * if we don't hold it.
 150          */
 151         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 152         if ( op->o_bd == NULL ) {
 153                 rs->sr_ref = referral_rewrite( default_referral,
 154                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 155
 156                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 157                 if ( rs->sr_ref != NULL ) {
 158                         rs->sr_err = LDAP_REFERRAL;
 159
 160                         send_ldap_result( op, rs );
 161
 162                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 163                 } else {
 164                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 165                                 "no global superior knowledge" );
 166                 }
 167                 goto cleanup;
 168         }
 169
 170         /* check restrictions */
 171         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 172                 send_ldap_result( op, rs );
 173                 goto cleanup;
 174         }
 175
 176         /* check for referrals */
 177         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 178                 goto cleanup;
 179         }
 180
 181 #if defined( LDAP_SLAPI )
 182 #define pb op->o_pb
 183         if ( pb ) {
 184                 slapi_int_pblock_set_operation( pb, op );
 185                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)op->o_req_dn.bv_val );
 186                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 187
 188                 rs->sr_err = slapi_int_call_plugins( op->o_bd,
 189                         SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 190                 if ( rs->sr_err < 0 ) {
 191                         /*
 192                          * A preoperation plugin failure will abort the
 193                          * entire operation.
 194                          */
 195 #ifdef NEW_LOGGING
 196                         LDAP_LOG( OPERATION, INFO, "do_delete: "
 197                                 "delete preoperation plugin failed\n", 0, 0, 0 );
 198 #else
 199                         Debug (LDAP_DEBUG_TRACE, "do_delete: "
 200                                 "delete preoperation plugin failed.\n", 0, 0, 0);
 201 #endif
 202                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE,
 203                                 (void *)&rs->sr_err ) != 0 ) ||
 204                                 rs->sr_err == LDAP_SUCCESS )
 205                         {
 206                                 rs->sr_err = LDAP_OTHER;
 207                         }
 208                         goto cleanup;
 209                 }
 210         }
 211 #endif /* defined( LDAP_SLAPI ) */
 212
 213         /*
 214          * do the delete if 1 && (2 || 3)
 215          * 1) there is a delete function implemented in this backend;
 216          * 2) this backend is master for what it holds;
 217          * 3) it's a replica and the dn supplied is the update_ndn.
 218          */
 219         if ( op->o_bd->be_delete ) {
 220                 /* do the update here */
 221                 int repl_user = be_isupdate( op );
 222 #ifndef SLAPD_MULTIMASTER
 223                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 224 #endif
 225                 {
 226                         struct berval   org_req_dn = BER_BVNULL;
 227                         struct berval   org_req_ndn = BER_BVNULL;
 228                         struct berval   org_dn = BER_BVNULL;
 229                         struct berval   org_ndn = BER_BVNULL;
 230                         int             org_managedsait;
 231                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 232
 233                         if ( !repl_user ) {
 234                                 struct berval csn = { 0 , NULL };
 235                                 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 236                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 237                         }
 238
 239 #ifdef SLAPD_MULTIMASTER
 240                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 241 #endif
 242                         {
 243                                 cb.sc_next = op->o_callback;
 244                                 op->o_callback = &cb;
 245                         }
 246
 247                         op->o_bd->be_delete( op, rs );
 248
 249                         org_req_dn = op->o_req_dn;
 250                         org_req_ndn = op->o_req_ndn;
 251                         org_dn = op->o_dn;
 252                         org_ndn = op->o_ndn;
 253                         org_managedsait = get_manageDSAit( op );
 254                         op->o_dn = op->o_bd->be_rootdn;
 255                         op->o_ndn = op->o_bd->be_rootndn;
 256                         op->o_managedsait = 1;
 257
 258                         while ( rs->sr_err == LDAP_SUCCESS &&
 259                                 op->o_delete_glue_parent )
 260                         {
 261                                 op->o_delete_glue_parent = 0;
 262                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 263                                         slap_callback cb = { NULL };
 264                                         cb.sc_response = slap_null_cb;
 265                                         dnParent( &op->o_req_ndn, &pdn );
 266                                         op->o_req_dn = pdn;
 267                                         op->o_req_ndn = pdn;
 268                                         op->o_callback = &cb;
 269                                         op->o_bd->be_delete( op, rs );
 270                                 } else {
 271                                         break;
 272                                 }
 273                         }
 274
 275                         op->o_managedsait = org_managedsait;
 276                         op->o_dn = org_dn;
 277                         op->o_ndn = org_ndn;
 278                         op->o_req_dn = org_req_dn;
 279                         op->o_req_ndn = org_req_ndn;
 280                         op->o_delete_glue_parent = 0;
 281
 282 #ifndef SLAPD_MULTIMASTER
 283                 } else {
 284                         BerVarray defref = op->o_bd->be_update_refs
 285                                 ? op->o_bd->be_update_refs : default_referral;
 286
 287                         if ( defref != NULL ) {
 288                                 rs->sr_ref = referral_rewrite( defref,
 289                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 290                                 if (!rs->sr_ref) rs->sr_ref = defref;
 291                                 rs->sr_err = LDAP_REFERRAL;
 292                                 send_ldap_result( op, rs );
 293
 294                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 295
 296                         } else {
 297                                 send_ldap_error( op, rs,
 298                                         LDAP_UNWILLING_TO_PERFORM,
 299                                         "shadow context; no update referral" );
 300                         }
 301 #endif
 302                 }
 303
 304         } else {
 305                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 306                         "operation not supported within namingContext" );
 307         }
 308
 309 #if defined( LDAP_SLAPI )
 310         if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
 311                 SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0)
 312         {
 313 #ifdef NEW_LOGGING
 314                 LDAP_LOG( OPERATION, INFO,
 315                         "do_delete: delete postoperation plugins failed\n",
 316                         0, 0, 0 );
 317 #else
 318                 Debug(LDAP_DEBUG_TRACE,
 319                         "do_delete: delete postoperation plugins failed\n",
 320                         0, 0, 0 );
 321 #endif
 322         }
 323 #endif /* defined( LDAP_SLAPI ) */
 324
 325 cleanup:;
 326         return rs->sr_err;
 327 }