3 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 * Copyright (c) 1995 Regents of the University of Michigan.
10 * Redistribution and use in source and binary forms are permitted
11 * provided that this notice is preserved and that due credit is given
12 * to the University of Michigan at Ann Arbor. The name of the University
13 * may not be used to endorse or promote products derived from this
14 * software without specific prior written permission. This software
15 * is provided ``as is'' without express or implied warranty.
21 #include <ac/socket.h>
26 static int compare_entry(
30 AttributeAssertion *ava );
39 struct berval dn = { 0, NULL };
40 struct berval *pdn = NULL;
41 struct berval *ndn = NULL;
42 struct berval desc = { 0, NULL };
43 struct berval value = { 0, NULL };
44 struct berval *nvalue;
45 AttributeAssertion ava;
47 int rc = LDAP_SUCCESS;
48 const char *text = NULL;
54 LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
55 "do_compare: conn %d\n", conn->c_connid ));
57 Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
60 * Parse the compare request. It looks like this:
62 * CompareRequest := [APPLICATION 14] SEQUENCE {
63 * entry DistinguishedName,
66 * value AttributeValue
71 if ( ber_scanf( op->o_ber, "{o" /*}*/, &dn ) == LBER_ERROR ) {
73 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
74 "do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
76 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
78 send_ldap_disconnect( conn, op,
79 LDAP_PROTOCOL_ERROR, "decoding error" );
80 return SLAPD_DISCONNECT;
83 if ( ber_scanf( op->o_ber, "{oo}", &desc, &value ) == LBER_ERROR ) {
85 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
86 "do_compare: conn %d get ava failed\n", conn->c_connid ));
88 Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
90 send_ldap_disconnect( conn, op,
91 LDAP_PROTOCOL_ERROR, "decoding error" );
92 rc = SLAPD_DISCONNECT;
96 if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
98 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
99 "do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
101 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
103 send_ldap_disconnect( conn, op,
104 LDAP_PROTOCOL_ERROR, "decoding error" );
105 rc = SLAPD_DISCONNECT;
109 if( ( rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
111 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
112 "do_compare: conn %d get_ctrls failed\n", conn->c_connid ));
114 Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
119 rc = dnPretty( NULL, &dn, &pdn );
120 if( rc != LDAP_SUCCESS ) {
122 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
123 "do_compare: conn %d invalid dn (%s)\n",
124 conn->c_connid, dn.bv_val ));
126 Debug( LDAP_DEBUG_ANY,
127 "do_compare: invalid dn (%s)\n", dn.bv_val, 0, 0 );
129 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
130 "invalid DN", NULL, NULL );
134 rc = dnNormalize( NULL, &dn, &ndn );
135 if( rc != LDAP_SUCCESS ) {
137 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
138 "do_compare: conn %d invalid dn (%s)\n",
139 conn->c_connid, dn.bv_val ));
141 Debug( LDAP_DEBUG_ANY,
142 "do_compare: invalid dn (%s)\n", dn.bv_val, 0, 0 );
144 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
145 "invalid DN", NULL, NULL );
149 rc = slap_bv2ad( &desc, &ava.aa_desc, &text );
150 if( rc != LDAP_SUCCESS ) {
151 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
155 rc = value_normalize( ava.aa_desc, SLAP_MR_EQUALITY, &value, &nvalue, &text );
156 if( rc != LDAP_SUCCESS ) {
157 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
161 ava.aa_value = nvalue;
163 if( strcasecmp( ndn->bv_val, LDAP_ROOT_DSE ) == 0 ) {
165 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
166 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
167 conn->c_connid, pdn->bv_val,
168 ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val ));
170 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
171 pdn->bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
174 Statslog( LDAP_DEBUG_STATS,
175 "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
176 op->o_connid, op->o_opid, pdn->bv_val,
177 ava.aa_desc->ad_cname.bv_val, 0 );
179 rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
180 if( rc != LDAP_SUCCESS ) {
181 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
185 rc = root_dse_info( conn, &entry, &text );
186 if( rc != LDAP_SUCCESS ) {
187 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
191 } else if ( strcasecmp( ndn->bv_val, SLAPD_SCHEMA_DN ) == 0 ) {
193 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
194 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
195 conn->c_connid, pdn->bv_val, ava.aa_desc->ad_cname.bv_val,
196 ava.aa_value->bv_val ));
198 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
199 pdn->bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
202 Statslog( LDAP_DEBUG_STATS,
203 "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
204 op->o_connid, op->o_opid, pdn->bv_val,
205 ava.aa_desc->ad_cname.bv_val, 0 );
207 rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
208 if( rc != LDAP_SUCCESS ) {
209 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
214 rc = schema_info( &entry, &text );
215 if( rc != LDAP_SUCCESS ) {
216 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
223 rc = compare_entry( conn, op, entry, &ava );
226 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
228 if( rc == LDAP_COMPARE_TRUE || rc == LDAP_COMPARE_FALSE ) {
235 manageDSAit = get_manageDSAit( op );
238 * We could be serving multiple database backends. Select the
239 * appropriate one, or send a referral to our "referral server"
240 * if we don't hold it.
242 if ( (be = select_backend( ndn, manageDSAit, 0 )) == NULL ) {
243 struct berval **ref = referral_rewrite( default_referral,
244 NULL, pdn, LDAP_SCOPE_DEFAULT );
246 send_ldap_result( conn, op, rc = LDAP_REFERRAL,
247 NULL, NULL, ref ? ref : default_referral, NULL );
254 /* check restrictions */
255 rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
256 if( rc != LDAP_SUCCESS ) {
257 send_ldap_result( conn, op, rc,
258 NULL, text, NULL, NULL );
262 /* check for referrals */
263 rc = backend_check_referrals( be, conn, op, pdn, ndn );
264 if ( rc != LDAP_SUCCESS ) {
269 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
270 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
271 conn->c_connid, pdn->bv_val, ava.aa_desc->ad_cname.bv_val,
272 ava.aa_value->bv_val ));
274 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
275 pdn->bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
278 Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
279 op->o_connid, op->o_opid, pdn->bv_val,
280 ava.aa_desc->ad_cname.bv_val, 0 );
283 /* deref suffix alias if appropriate */
284 suffix_alias( be, ndn );
286 if ( be->be_compare ) {
287 (*be->be_compare)( be, conn, op, pdn, ndn, &ava );
289 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
290 NULL, "operation not supported within namingContext",
299 free( value.bv_val );
304 static int compare_entry(
308 AttributeAssertion *ava )
310 int rc = LDAP_NO_SUCH_ATTRIBUTE;
313 if ( ! access_allowed( NULL, conn, op, e,
314 ava->aa_desc, ava->aa_value, ACL_COMPARE ) )
316 return LDAP_INSUFFICIENT_ACCESS;
319 for(a = attrs_find( e->e_attrs, ava->aa_desc );
321 a = attrs_find( a->a_next, ava->aa_desc ))
323 rc = LDAP_COMPARE_FALSE;
325 if ( value_find( ava->aa_desc, a->a_vals, ava->aa_value ) == 0 ) {
326 rc = LDAP_COMPARE_TRUE;