external/bsd/openldap/dist/servers/slapd/back-meta/modrdn.c

   1 /* $OpenLDAP: pkg/ldap/servers/slapd/back-meta/modrdn.c,v 1.39.2.9 2008/04/14 18:57:13 quanah Exp $ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2008 The OpenLDAP Foundation.
   5  * Portions Copyright 2001-2003 Pierangelo Masarati.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by the Howard Chu for inclusion
  19  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  20  * Masarati.
  21  */
  22
  23 #include "portable.h"
  24
  25 #include <stdio.h>
  26
  27 #include <ac/socket.h>
  28 #include <ac/string.h>
  29
  30 #include "slap.h"
  31 #include "../back-ldap/back-ldap.h"
  32 #include "back-meta.h"
  33
  34 int
  35 meta_back_modrdn( Operation *op, SlapReply *rs )
  36 {
  37         metainfo_t      *mi = ( metainfo_t * )op->o_bd->be_private;
  38         metatarget_t    *mt;
  39         metaconn_t      *mc;
  40         int             candidate = -1;
  41         struct berval   mdn = BER_BVNULL,
  42                         mnewSuperior = BER_BVNULL;
  43         dncookie        dc;
  44         int             msgid;
  45         int             do_retry = 1;
  46         LDAPControl     **ctrls = NULL;
  47         struct berval   newrdn = BER_BVNULL;
  48
  49         mc = meta_back_getconn( op, rs, &candidate, LDAP_BACK_SENDERR );
  50         if ( !mc || !meta_back_dobind( op, rs, mc, LDAP_BACK_SENDERR ) ) {
  51                 return rs->sr_err;
  52         }
  53
  54         assert( mc->mc_conns[ candidate ].msc_ld != NULL );
  55
  56         mt = mi->mi_targets[ candidate ];
  57         dc.target = mt;
  58         dc.conn = op->o_conn;
  59         dc.rs = rs;
  60
  61         if ( op->orr_newSup ) {
  62
  63                 /*
  64                  * NOTE: the newParent, if defined, must be on the
  65                  * same target as the entry to be renamed.  This check
  66                  * has been anticipated in meta_back_getconn()
  67                  */
  68                 /*
  69                  * FIXME: one possibility is to delete the entry
  70                  * from one target and add it to the other;
  71                  * unfortunately we'd need write access to both,
  72                  * which is nearly impossible; for administration
  73                  * needs, the rootdn of the metadirectory could
  74                  * be mapped to an administrative account on each
  75                  * target (the binddn?); we'll see.
  76                  */
  77                 /*
  78                  * NOTE: we need to port the identity assertion
  79                  * feature from back-ldap
  80                  */
  81
  82                 /* needs LDAPv3 */
  83                 switch ( mt->mt_version ) {
  84                 case LDAP_VERSION3:
  85                         break;
  86
  87                 case 0:
  88                         if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
  89                                 break;
  90                         }
  91                         /* fall thru */
  92
  93                 default:
  94                         /* op->o_protocol cannot be anything but LDAPv3,
  95                          * otherwise wouldn't be here */
  96                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
  97                         send_ldap_result( op, rs );
  98                         goto cleanup;
  99                 }
 100
 101                 /*
 102                  * Rewrite the new superior, if defined and required
 103                  */
 104                 dc.ctx = "newSuperiorDN";
 105                 if ( ldap_back_dn_massage( &dc, op->orr_newSup, &mnewSuperior ) ) {
 106                         rs->sr_err = LDAP_OTHER;
 107                         send_ldap_result( op, rs );
 108                         goto cleanup;
 109                 }
 110         }
 111
 112         /*
 113          * Rewrite the modrdn dn, if required
 114          */
 115         dc.ctx = "modrDN";
 116         if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
 117                 rs->sr_err = LDAP_OTHER;
 118                 send_ldap_result( op, rs );
 119                 goto cleanup;
 120         }
 121
 122         /* NOTE: we need to copy the newRDN in case it was formed
 123          * from a DN by simply changing the length (ITS#5397) */
 124         newrdn = op->orr_newrdn;
 125         if ( newrdn.bv_val[ newrdn.bv_len ] != '\0' ) {
 126                 ber_dupbv_x( &newrdn, &op->orr_newrdn, op->o_tmpmemctx );
 127         }
 128
 129 retry:;
 130         ctrls = op->o_ctrls;
 131         if ( meta_back_controls_add( op, rs, mc, candidate, &ctrls ) != LDAP_SUCCESS )
 132         {
 133                 send_ldap_result( op, rs );
 134                 goto cleanup;
 135         }
 136
 137         rs->sr_err = ldap_rename( mc->mc_conns[ candidate ].msc_ld,
 138                         mdn.bv_val, newrdn.bv_val,
 139                         mnewSuperior.bv_val, op->orr_deleteoldrdn,
 140                         ctrls, NULL, &msgid );
 141         rs->sr_err = meta_back_op_result( mc, op, rs, candidate, msgid,
 142                 mt->mt_timeout[ SLAP_OP_MODRDN ], LDAP_BACK_SENDRESULT );
 143         if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
 144                 do_retry = 0;
 145                 if ( meta_back_retry( op, rs, &mc, candidate, LDAP_BACK_SENDERR ) ) {
 146                         /* if the identity changed, there might be need to re-authz */
 147                         (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
 148                         goto retry;
 149                 }
 150         }
 151
 152 cleanup:;
 153         (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
 154
 155         if ( mdn.bv_val != op->o_req_dn.bv_val ) {
 156                 free( mdn.bv_val );
 157                 BER_BVZERO( &mdn );
 158         }
 159
 160         if ( !BER_BVISNULL( &mnewSuperior )
 161                         && mnewSuperior.bv_val != op->orr_newSup->bv_val )
 162         {
 163                 free( mnewSuperior.bv_val );
 164                 BER_BVZERO( &mnewSuperior );
 165         }
 166
 167         if ( newrdn.bv_val != op->orr_newrdn.bv_val ) {
 168                 op->o_tmpfree( newrdn.bv_val, op->o_tmpmemctx );
 169         }
 170
 171         if ( mc ) {
 172                 meta_back_release_conn( mi, mc );
 173         }
 174
 175         return rs->sr_err;
 176 }
 177