1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* referral.c - BDB backend referral handler */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2018 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
int
bdb_referrals( Operation *op, SlapReply *rs )
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
Entry *e = NULL;
EntryInfo *ei;
int rc = LDAP_SUCCESS;
DB_TXN *rtxn;
DB_LOCK lock;
if( op->o_tag == LDAP_REQ_SEARCH ) {
/* let search take care of itself */
return rc;
}
if( get_manageDSAit( op ) ) {
/* let op take care of DSA management */
return rc;
}
rc = bdb_reader_get(op, bdb->bi_dbenv, &rtxn);
switch(rc) {
case 0:
break;
default:
return LDAP_OTHER;
}
dn2entry_retry:
/* get entry */
rc = bdb_dn2entry( op, rtxn, &op->o_req_ndn, &ei, 1, &lock );
/* bdb_dn2entry() may legally leave ei == NULL
* if rc != 0 and rc != DB_NOTFOUND
*/
if ( ei ) {
e = ei->bei_e;
}
switch(rc) {
case DB_NOTFOUND:
case 0:
break;
case LDAP_BUSY:
rs->sr_text = "ldap server busy";
return LDAP_BUSY;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto dn2entry_retry;
default:
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": dn2entry failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
rs->sr_text = "internal error";
return LDAP_OTHER;
}
if ( rc == DB_NOTFOUND ) {
rc = LDAP_SUCCESS;
rs->sr_matched = NULL;
if ( e != NULL ) {
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": tag=%lu target=\"%s\" matched=\"%s\"\n",
(unsigned long)op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
if( is_entry_referral( e ) ) {
BerVarray ref = get_entry_referrals( op, e );
rc = LDAP_OTHER;
rs->sr_ref = referral_rewrite( ref, &e->e_name,
&op->o_req_dn, LDAP_SCOPE_DEFAULT );
ber_bvarray_free( ref );
if ( rs->sr_ref ) {
rs->sr_matched = ber_strdup_x(
e->e_name.bv_val, op->o_tmpmemctx );
}
}
bdb_cache_return_entry_r (bdb, e, &lock);
e = NULL;
}
if( rs->sr_ref != NULL ) {
/* send referrals */
rc = rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
} else if ( rc != LDAP_SUCCESS ) {
rs->sr_text = rs->sr_matched ? "bad referral object" : NULL;
}
if (rs->sr_matched) {
op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
rs->sr_matched = NULL;
}
return rc;
}
if ( is_entry_referral( e ) ) {
/* entry is a referral */
BerVarray refs = get_entry_referrals( op, e );
rs->sr_ref = referral_rewrite(
refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": tag=%lu target=\"%s\" matched=\"%s\"\n",
(unsigned long)op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
rs->sr_matched = e->e_name.bv_val;
if( rs->sr_ref != NULL ) {
rc = rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
} else {
rc = LDAP_OTHER;
rs->sr_text = "bad referral object";
}
rs->sr_matched = NULL;
ber_bvarray_free( refs );
}
bdb_cache_return_entry_r(bdb, e, &lock);
return rc;
}
|
