1/* $OpenLDAP$ */
2/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
3 *
4 * Copyright 1999-2011 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
34int
35meta_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	ldap_back_send_t	retrying = LDAP_BACK_RETRYING;
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
129retry:;
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 | retrying ) );
143	if ( rs->sr_err == LDAP_UNAVAILABLE && retrying ) {
144		retrying &= ~LDAP_BACK_RETRYING;
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
152cleanup:;
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
178