3 * Copyright 1998-2002 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 = { 0, NULL };
41 struct berval ndn = { 0, NULL };
42 struct berval desc = { 0, NULL };
43 struct berval value = { 0, NULL };
44 AttributeAssertion ava = { 0 };
46 int rc = LDAP_SUCCESS;
47 const char *text = NULL;
53 LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
54 "do_compare: conn %d\n", conn->c_connid ));
56 Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
59 * Parse the compare request. It looks like this:
61 * CompareRequest := [APPLICATION 14] SEQUENCE {
62 * entry DistinguishedName,
65 * value AttributeValue
70 if ( ber_scanf( op->o_ber, "{m" /*}*/, &dn ) == LBER_ERROR ) {
72 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
73 "do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
75 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
77 send_ldap_disconnect( conn, op,
78 LDAP_PROTOCOL_ERROR, "decoding error" );
79 return SLAPD_DISCONNECT;
82 if ( ber_scanf( op->o_ber, "{mm}", &desc, &value ) == LBER_ERROR ) {
84 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
85 "do_compare: conn %d get ava failed\n", conn->c_connid ));
87 Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
89 send_ldap_disconnect( conn, op,
90 LDAP_PROTOCOL_ERROR, "decoding error" );
91 rc = SLAPD_DISCONNECT;
95 if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
97 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
98 "do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
100 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
102 send_ldap_disconnect( conn, op,
103 LDAP_PROTOCOL_ERROR, "decoding error" );
104 rc = SLAPD_DISCONNECT;
108 if( ( rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
110 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
111 "do_compare: conn %d get_ctrls failed\n", conn->c_connid ));
113 Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
118 rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn );
119 if( rc != LDAP_SUCCESS ) {
121 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
122 "do_compare: conn %d invalid dn (%s)\n",
123 conn->c_connid, dn.bv_val ));
125 Debug( LDAP_DEBUG_ANY,
126 "do_compare: invalid dn (%s)\n", dn.bv_val, 0, 0 );
128 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
129 "invalid DN", NULL, NULL );
133 rc = slap_bv2ad( &desc, &ava.aa_desc, &text );
134 if( rc != LDAP_SUCCESS ) {
135 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
139 rc = value_validate_normalize( ava.aa_desc, SLAP_MR_EQUALITY,
140 &value, &ava.aa_value, &text );
141 if( rc != LDAP_SUCCESS ) {
142 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
146 if( strcasecmp( ndn.bv_val, LDAP_ROOT_DSE ) == 0 ) {
148 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
149 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
150 conn->c_connid, pdn.bv_val,
151 ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val ));
153 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
154 pdn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
157 Statslog( LDAP_DEBUG_STATS,
158 "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
159 op->o_connid, op->o_opid, pdn.bv_val,
160 ava.aa_desc->ad_cname.bv_val, 0 );
162 rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
163 if( rc != LDAP_SUCCESS ) {
164 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
168 rc = root_dse_info( conn, &entry, &text );
169 if( rc != LDAP_SUCCESS ) {
170 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
174 } else if ( strcasecmp( ndn.bv_val, SLAPD_SCHEMA_DN ) == 0 ) {
176 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
177 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
178 conn->c_connid, pdn.bv_val, ava.aa_desc->ad_cname.bv_val,
179 ava.aa_value.bv_val ));
181 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
182 pdn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
185 Statslog( LDAP_DEBUG_STATS,
186 "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
187 op->o_connid, op->o_opid, pdn.bv_val,
188 ava.aa_desc->ad_cname.bv_val, 0 );
190 rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
191 if( rc != LDAP_SUCCESS ) {
192 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
197 rc = schema_info( &entry, &text );
198 if( rc != LDAP_SUCCESS ) {
199 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
206 rc = compare_entry( conn, op, entry, &ava );
209 send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
211 if( rc == LDAP_COMPARE_TRUE || rc == LDAP_COMPARE_FALSE ) {
218 manageDSAit = get_manageDSAit( op );
221 * We could be serving multiple database backends. Select the
222 * appropriate one, or send a referral to our "referral server"
223 * if we don't hold it.
225 if ( (be = select_backend( &ndn, manageDSAit, 0 )) == NULL ) {
226 BerVarray ref = referral_rewrite( default_referral,
227 NULL, &pdn, LDAP_SCOPE_DEFAULT );
229 send_ldap_result( conn, op, rc = LDAP_REFERRAL,
230 NULL, NULL, ref ? ref : default_referral, NULL );
232 ber_bvarray_free( ref );
237 /* check restrictions */
238 rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
239 if( rc != LDAP_SUCCESS ) {
240 send_ldap_result( conn, op, rc,
241 NULL, text, NULL, NULL );
245 /* check for referrals */
246 rc = backend_check_referrals( be, conn, op, &pdn, &ndn );
247 if ( rc != LDAP_SUCCESS ) {
252 LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
253 "do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
254 conn->c_connid, pdn.bv_val, ava.aa_desc->ad_cname.bv_val,
255 ava.aa_value.bv_val ));
257 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
258 pdn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
261 Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
262 op->o_connid, op->o_opid, pdn.bv_val,
263 ava.aa_desc->ad_cname.bv_val, 0 );
266 /* deref suffix alias if appropriate */
267 suffix_alias( be, &ndn );
269 if ( be->be_compare ) {
270 (*be->be_compare)( be, conn, op, &pdn, &ndn, &ava );
272 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
273 NULL, "operation not supported within namingContext",
280 if ( ava.aa_value.bv_val ) free( ava.aa_value.bv_val );
285 static int compare_entry(
289 AttributeAssertion *ava )
291 int rc = LDAP_NO_SUCH_ATTRIBUTE;
294 if ( ! access_allowed( NULL, conn, op, e,
295 ava->aa_desc, &ava->aa_value, ACL_COMPARE, NULL ) )
297 return LDAP_INSUFFICIENT_ACCESS;
300 for(a = attrs_find( e->e_attrs, ava->aa_desc );
302 a = attrs_find( a->a_next, ava->aa_desc ))
304 rc = LDAP_COMPARE_FALSE;
306 if ( value_find( ava->aa_desc, a->a_vals, &ava->aa_value ) == 0 ) {
307 rc = LDAP_COMPARE_TRUE;