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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/* noopsrch.c - LDAP Control that counts entries a search would return */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2010-2022 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>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by Pierangelo Masarati for inclusion
* in OpenLDAP Software.
*/
#include "portable.h"
/* define SLAPD_OVER_NOOPSRCH=2 to build as run-time loadable module */
#ifdef SLAPD_OVER_NOOPSRCH
/*
* Control OID
*/
#define LDAP_CONTROL_X_NOOPSRCH "1.3.6.1.4.1.4203.666.5.18"
#include "slap.h"
#include "ac/string.h"
#define o_noopsrch o_ctrlflag[noopsrch_cid]
#define o_ctrlnoopsrch o_controls[noopsrch_cid]
static int noopsrch_cid;
static slap_overinst noopsrch;
static int
noopsrch_parseCtrl (
Operation *op,
SlapReply *rs,
LDAPControl *ctrl )
{
if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
rs->sr_text = "No-op Search control specified multiple times";
return LDAP_PROTOCOL_ERROR;
}
if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
rs->sr_text = "No-op Search control value is present";
return LDAP_PROTOCOL_ERROR;
}
op->o_ctrlnoopsrch = (void *)NULL;
op->o_noopsrch = ctrl->ldctl_iscritical
? SLAP_CONTROL_CRITICAL
: SLAP_CONTROL_NONCRITICAL;
rs->sr_err = LDAP_SUCCESS;
return rs->sr_err;
}
int dummy;
typedef struct noopsrch_cb_t {
slap_overinst *nc_on;
ber_int_t nc_nentries;
ber_int_t nc_nsearchref;
AttributeName *nc_save_attrs;
int *nc_pdummy;
int nc_save_slimit;
} noopsrch_cb_t;
static int
noopsrch_response( Operation *op, SlapReply *rs )
{
noopsrch_cb_t *nc = (noopsrch_cb_t *)op->o_callback->sc_private;
/* if the control is global, limits are not computed yet */
if ( nc->nc_pdummy == &dummy ) {
nc->nc_save_slimit = op->ors_slimit;
op->ors_slimit = SLAP_NO_LIMIT;
nc->nc_pdummy = NULL;
}
if ( rs->sr_type == REP_SEARCH ) {
nc->nc_nentries++;
#ifdef NOOPSRCH_DEBUG
Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_SEARCH): nentries=%d\n", nc->nc_nentries );
#endif
return 0;
} else if ( rs->sr_type == REP_SEARCHREF ) {
nc->nc_nsearchref++;
return 0;
} else if ( rs->sr_type == REP_RESULT ) {
BerElementBuffer berbuf;
BerElement *ber = (BerElement *) &berbuf;
struct berval ctrlval;
LDAPControl *ctrl, *ctrlsp[2];
int rc = rs->sr_err;
if ( nc->nc_save_slimit >= 0 && nc->nc_nentries >= nc->nc_save_slimit ) {
rc = LDAP_SIZELIMIT_EXCEEDED;
}
#ifdef NOOPSRCH_DEBUG
Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_RESULT): err=%d nentries=%d nref=%d\n", rc, nc->nc_nentries, nc->nc_nsearchref );
#endif
ber_init2( ber, NULL, LBER_USE_DER );
ber_printf( ber, "{iii}", rc, nc->nc_nentries, nc->nc_nsearchref );
if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
ber_free_buf( ber );
if ( op->o_noopsrch == SLAP_CONTROL_CRITICAL ) {
return LDAP_CONSTRAINT_VIOLATION;
}
return SLAP_CB_CONTINUE;
}
ctrl = op->o_tmpcalloc( 1,
sizeof( LDAPControl ) + ctrlval.bv_len + 1,
op->o_tmpmemctx );
ctrl->ldctl_value.bv_val = (char *)&ctrl[ 1 ];
ctrl->ldctl_oid = LDAP_CONTROL_X_NOOPSRCH;
ctrl->ldctl_iscritical = 0;
ctrl->ldctl_value.bv_len = ctrlval.bv_len;
AC_MEMCPY( ctrl->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len );
ctrl->ldctl_value.bv_val[ ctrl->ldctl_value.bv_len ] = '\0';
ber_free_buf( ber );
ctrlsp[0] = ctrl;
ctrlsp[1] = NULL;
slap_add_ctrls( op, rs, ctrlsp );
}
return SLAP_CB_CONTINUE;
}
static int
noopsrch_cleanup( Operation *op, SlapReply *rs )
{
if ( rs->sr_type == REP_RESULT || rs->sr_err == SLAPD_ABANDON ) {
noopsrch_cb_t *nc = (noopsrch_cb_t *)op->o_callback->sc_private;
op->ors_attrs = nc->nc_save_attrs;
if ( nc->nc_pdummy == NULL ) {
op->ors_slimit = nc->nc_save_slimit;
}
op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
op->o_callback = NULL;
}
return SLAP_CB_CONTINUE;
}
static int
noopsrch_op_search( Operation *op, SlapReply *rs )
{
if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
slap_callback *sc;
noopsrch_cb_t *nc;
sc = op->o_tmpcalloc( 1, sizeof( slap_callback ) + sizeof( noopsrch_cb_t ), op->o_tmpmemctx );
nc = (noopsrch_cb_t *)&sc[ 1 ];
nc->nc_on = (slap_overinst *)op->o_bd->bd_info;
nc->nc_nentries = 0;
nc->nc_nsearchref = 0;
nc->nc_save_attrs = op->ors_attrs;
nc->nc_pdummy = &dummy;
sc->sc_response = noopsrch_response;
sc->sc_cleanup = noopsrch_cleanup;
sc->sc_private = (void *)nc;
op->ors_attrs = slap_anlist_no_attrs;
sc->sc_next = op->o_callback->sc_next;
op->o_callback->sc_next = sc;
}
return SLAP_CB_CONTINUE;
}
static int noopsrch_cnt;
static int
noopsrch_db_init( BackendDB *be, ConfigReply *cr)
{
if ( noopsrch_cnt++ == 0 ) {
int rc;
rc = register_supported_control( LDAP_CONTROL_X_NOOPSRCH,
SLAP_CTRL_SEARCH | SLAP_CTRL_GLOBAL_SEARCH, NULL,
noopsrch_parseCtrl, &noopsrch_cid );
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"noopsrch_initialize: Failed to register control '%s' (%d)\n",
LDAP_CONTROL_X_NOOPSRCH, rc );
return rc;
}
}
return LDAP_SUCCESS;
}
static int
noopsrch_db_destroy( BackendDB *be, ConfigReply *cr )
{
assert( noopsrch_cnt > 0 );
#ifdef SLAP_CONFIG_DELETE
overlay_unregister_control( be, LDAP_CONTROL_X_NOOPSRCH );
if ( --noopsrch_cnt == 0 ) {
unregister_supported_control( LDAP_CONTROL_X_NOOPSRCH );
}
#endif /* SLAP_CONFIG_DELETE */
return 0;
}
#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
static
#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
int
noopsrch_initialize( void )
{
noopsrch.on_bi.bi_type = "noopsrch";
noopsrch.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
noopsrch.on_bi.bi_db_init = noopsrch_db_init;
noopsrch.on_bi.bi_db_destroy = noopsrch_db_destroy;
noopsrch.on_bi.bi_op_search = noopsrch_op_search;
return overlay_register( &noopsrch );
}
#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
int
init_module( int argc, char *argv[] )
{
return noopsrch_initialize();
}
#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
#endif /* SLAPD_OVER_NOOPSRCH */
|
