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[openldap] / servers / slapd / back-meta / modify.c
1 /* $OpenLDAP$ */
2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
3  *
4  * Copyright 1999-2017 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
34 int
35 meta_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
179 retry:;
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
200 cleanup:;
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