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
|
/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/*
* Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of Michigan at Ann Arbor. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#include <stdio.h>
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#endif
#include "slap.h"
#include "pratom.h"
void
do_compare( Slapi_PBlock *pb )
{
BerElement *ber = pb->pb_op->o_ber;
char *dn;
struct ava ava;
Slapi_Backend *be = NULL;
int err;
char ebuf[ BUFSIZ ];
Slapi_DN sdn;
Slapi_Entry *referral;
char errorbuf[BUFSIZ];
LDAPDebug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
/* count the compare request */
PR_AtomicIncrement(g_get_global_snmp_vars()->ops_tbl.dsCompareOps);
/*
* Parse the compare request. It looks like this:
*
* CompareRequest := [APPLICATION 14] SEQUENCE {
* entry DistinguishedName,
* ava SEQUENCE {
* type AttributeType,
* value AttributeValue
* }
* }
*/
if ( ber_scanf( ber, "{a{ao}}", &dn, &ava.ava_type,
&ava.ava_value ) == LBER_ERROR ) {
LDAPDebug( LDAP_DEBUG_ANY,
"ber_scanf failed (op=Compare; params=DN,Type,Value)\n",
0, 0, 0 );
send_ldap_result( pb, LDAP_PROTOCOL_ERROR, NULL, NULL, 0,
NULL );
return;
}
/*
* in LDAPv3 there can be optional control extensions on
* the end of an LDAPMessage. we need to read them in and
* pass them to the backend.
*/
if ( (err = get_ldapmessage_controls( pb, ber, NULL )) != 0 ) {
send_ldap_result( pb, err, NULL, NULL, 0, NULL );
goto free_and_return;
}
slapi_sdn_init_dn_passin(&sdn,dn);
/* target spec is used to decide which plugins are applicable for the operation */
operation_set_target_spec (pb->pb_op, &sdn);
LDAPDebug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s)\n",
dn, ava.ava_type, 0 );
slapi_log_access( LDAP_DEBUG_STATS,
"conn=%d op=%d CMP dn=\"%s\" attr=\"%s\"\n",
pb->pb_conn->c_connid, pb->pb_op->o_opid,
escape_string( dn, ebuf ), ava.ava_type );
/*
* We could be serving multiple database backends. Select the
* appropriate one.
*/
if ((err = slapi_mapping_tree_select(pb, &be, &referral, errorbuf)) != LDAP_SUCCESS) {
send_ldap_result(pb, err, NULL, errorbuf, 0, NULL);
be = NULL;
goto free_and_return;
}
if (referral)
{
int managedsait;
slapi_pblock_get(pb, SLAPI_MANAGEDSAIT, &managedsait);
if (managedsait)
{
send_ldap_result(pb, LDAP_UNWILLING_TO_PERFORM, NULL,
"cannot compare referral", 0, NULL);
slapi_entry_free(referral);
goto free_and_return;
}
send_referrals_from_entry(pb,referral);
slapi_entry_free(referral);
goto free_and_return;
}
if ( be->be_compare != NULL ) {
int isroot;
slapi_pblock_set( pb, SLAPI_BACKEND, be );
isroot = pb->pb_op->o_isroot;
slapi_pblock_set( pb, SLAPI_REQUESTOR_ISROOT, &isroot );
slapi_pblock_set( pb, SLAPI_COMPARE_TARGET, (void*)slapi_sdn_get_ndn(&sdn) );
slapi_pblock_set( pb, SLAPI_COMPARE_TYPE, ava.ava_type);
slapi_pblock_set( pb, SLAPI_COMPARE_VALUE, &ava.ava_value );
/*
* call the pre-compare plugins. if they succeed, call
* the backend compare function. then call the
* post-compare plugins.
*/
if ( plugin_call_plugins( pb,
SLAPI_PLUGIN_PRE_COMPARE_FN ) == 0 ) {
int rc;
slapi_pblock_set( pb, SLAPI_PLUGIN, be->be_database );
set_db_default_result_handlers(pb);
rc = (*be->be_compare)( pb );
slapi_pblock_set( pb, SLAPI_PLUGIN_OPRETURN, &rc );
plugin_call_plugins( pb, SLAPI_PLUGIN_POST_COMPARE_FN );
}
} else {
send_ldap_result( pb, LDAP_UNWILLING_TO_PERFORM, NULL,
"Function not implemented", 0, NULL );
}
free_and_return:;
if (be)
slapi_be_Unlock(be);
slapi_sdn_done(&sdn);
ava_done( &ava );
}
|
