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/string.h>
28#include <ac/socket.h>
29
30#include "slap.h"
31#include "../back-ldap/back-ldap.h"
32#include "back-meta.h"
33
34int
35meta_back_modify( 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		rc = 0;
41	LDAPMod		**modv = NULL;
42	LDAPMod		*mods = NULL;
43	Modifications	*ml;
44	int		candidate = -1, i;
45	int		isupdate;
46	struct berval	mdn = BER_BVNULL;
47	struct berval	mapped;
48	dncookie	dc;
49	int		msgid;
50	ldap_back_send_t	retrying = LDAP_BACK_RETRYING;
51	LDAPControl	**ctrls = NULL;
52
53	mc = meta_back_getconn( op, rs, &candidate, LDAP_BACK_SENDERR );
54	if ( !mc || !meta_back_dobind( op, rs, mc, LDAP_BACK_SENDERR ) ) {
55		return rs->sr_err;
56	}
57
58	assert( mc->mc_conns[ candidate ].msc_ld != NULL );
59
60	/*
61	 * Rewrite the modify dn, if needed
62	 */
63	mt = mi->mi_targets[ candidate ];
64	dc.target = mt;
65	dc.conn = op->o_conn;
66	dc.rs = rs;
67	dc.ctx = "modifyDN";
68
69	if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
70		send_ldap_result( op, rs );
71		goto cleanup;
72	}
73
74	for ( i = 0, ml = op->orm_modlist; ml; i++ ,ml = ml->sml_next )
75		;
76
77	mods = ch_malloc( sizeof( LDAPMod )*i );
78	if ( mods == NULL ) {
79		rs->sr_err = LDAP_OTHER;
80		send_ldap_result( op, rs );
81		goto cleanup;
82	}
83	modv = ( LDAPMod ** )ch_malloc( ( i + 1 )*sizeof( LDAPMod * ) );
84	if ( modv == NULL ) {
85		rs->sr_err = LDAP_OTHER;
86		send_ldap_result( op, rs );
87		goto cleanup;
88	}
89
90	dc.ctx = "modifyAttrDN";
91	isupdate = be_shadow_update( op );
92	for ( i = 0, ml = op->orm_modlist; ml; ml = ml->sml_next ) {
93		int	j, is_oc = 0;
94
95		if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
96		{
97			continue;
98		}
99
100		if ( ml->sml_desc == slap_schema.si_ad_objectClass
101				|| ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
102		{
103			is_oc = 1;
104			mapped = ml->sml_desc->ad_cname;
105
106		} else {
107			ldap_back_map( &mt->mt_rwmap.rwm_at,
108					&ml->sml_desc->ad_cname, &mapped,
109					BACKLDAP_MAP );
110			if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
111				continue;
112			}
113		}
114
115		modv[ i ] = &mods[ i ];
116		mods[ i ].mod_op = ml->sml_op | LDAP_MOD_BVALUES;
117		mods[ i ].mod_type = mapped.bv_val;
118
119		/*
120		 * FIXME: dn-valued attrs should be rewritten
121		 * to allow their use in ACLs at the back-ldap
122		 * level.
123		 */
124		if ( ml->sml_values != NULL ) {
125			if ( is_oc ) {
126				for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ )
127					;
128				mods[ i ].mod_bvalues =
129					(struct berval **)ch_malloc( ( j + 1 ) *
130					sizeof( struct berval * ) );
131				for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); ) {
132					struct ldapmapping	*mapping;
133
134					ldap_back_mapping( &mt->mt_rwmap.rwm_oc,
135							&ml->sml_values[ j ], &mapping, BACKLDAP_MAP );
136
137					if ( mapping == NULL ) {
138						if ( mt->mt_rwmap.rwm_oc.drop_missing ) {
139							continue;
140						}
141						mods[ i ].mod_bvalues[ j ] = &ml->sml_values[ j ];
142
143					} else {
144						mods[ i ].mod_bvalues[ j ] = &mapping->dst;
145					}
146					j++;
147				}
148				mods[ i ].mod_bvalues[ j ] = NULL;
149
150			} else {
151				if ( ml->sml_desc->ad_type->sat_syntax ==
152						slap_schema.si_syn_distinguishedName )
153				{
154					( void )ldap_dnattr_rewrite( &dc, ml->sml_values );
155					if ( ml->sml_values == NULL ) {
156						continue;
157					}
158				}
159
160				for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ )
161					;
162				mods[ i ].mod_bvalues =
163					(struct berval **)ch_malloc( ( j + 1 ) *
164					sizeof( struct berval * ) );
165				for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ ) {
166					mods[ i ].mod_bvalues[ j ] = &ml->sml_values[ j ];
167				}
168				mods[ i ].mod_bvalues[ j ] = NULL;
169			}
170
171		} else {
172			mods[ i ].mod_bvalues = NULL;
173		}
174
175		i++;
176	}
177	modv[ i ] = 0;
178
179retry:;
180	ctrls = op->o_ctrls;
181	rc = meta_back_controls_add( op, rs, mc, candidate, &ctrls );
182	if ( rc != LDAP_SUCCESS ) {
183		send_ldap_result( op, rs );
184		goto cleanup;
185	}
186
187	rs->sr_err = ldap_modify_ext( mc->mc_conns[ candidate ].msc_ld, mdn.bv_val,
188			modv, ctrls, NULL, &msgid );
189	rs->sr_err = meta_back_op_result( mc, op, rs, candidate, msgid,
190		mt->mt_timeout[ SLAP_OP_MODIFY ], ( LDAP_BACK_SENDRESULT | retrying ) );
191	if ( rs->sr_err == LDAP_UNAVAILABLE && retrying ) {
192		retrying &= ~LDAP_BACK_RETRYING;
193		if ( meta_back_retry( op, rs, &mc, candidate, LDAP_BACK_SENDERR ) ) {
194			/* if the identity changed, there might be need to re-authz */
195			(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
196			goto retry;
197		}
198	}
199
200cleanup:;
201	(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
202
203	if ( mdn.bv_val != op->o_req_dn.bv_val ) {
204		free( mdn.bv_val );
205		BER_BVZERO( &mdn );
206	}
207	if ( modv != NULL ) {
208		for ( i = 0; modv[ i ]; i++ ) {
209			free( modv[ i ]->mod_bvalues );
210		}
211	}
212	free( mods );
213	free( modv );
214
215	if ( mc ) {
216		meta_back_release_conn( mi, mc );
217	}
218
219	return rs->sr_err;
220}
221
222