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