openldap/servers/slapd/compare.c
2000-05-16 21:44:54 +00:00

174 lines
4.4 KiB
C

/* $OpenLDAP$ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/*
* 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 "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include "ldap_pvt.h"
#include "slap.h"
int
do_compare(
Connection *conn,
Operation *op
)
{
char *dn = NULL, *ndn=NULL;
struct berval desc;
struct berval value;
Backend *be;
int rc = LDAP_SUCCESS;
char *text = NULL;
#ifdef SLAPD_SCHEMA_NOT_COMPAT
AttributeAssertion ava;
ava.aa_desc = NULL;
#else
Ava ava;
#endif
desc.bv_val = NULL;
value.bv_val = NULL;
Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
/*
* Parse the compare request. It looks like this:
*
* CompareRequest := [APPLICATION 14] SEQUENCE {
* entry DistinguishedName,
* ava SEQUENCE {
* type AttributeType,
* value AttributeValue
* }
* }
*/
if ( ber_scanf( op->o_ber, "{a" /*}*/, &dn ) == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
send_ldap_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "decoding error" );
return SLAPD_DISCONNECT;
}
if ( ber_scanf( op->o_ber, "{oo}", &desc, &value ) == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
send_ldap_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "decoding error" );
rc = SLAPD_DISCONNECT;
goto cleanup;
}
if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
send_ldap_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "decoding error" );
rc = SLAPD_DISCONNECT;
goto cleanup;
}
if( ( rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
goto cleanup;
}
ndn = ch_strdup( dn );
if( dn_normalize( ndn ) == NULL ) {
Debug( LDAP_DEBUG_ANY, "do_compare: invalid dn (%s)\n", dn, 0, 0 );
send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
"invalid DN", NULL, NULL );
goto cleanup;
}
#ifdef SLAPD_SCHEMA_NOT_COMPAT
ava.aa_desc = NULL;
rc = slap_bv2ad( &desc, &ava.aa_desc, &text );
if( rc != LDAP_SUCCESS ) {
send_ldap_result( conn, op, rc, NULL,
text, NULL, NULL );
goto cleanup;
}
ava.aa_value = &value;
Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
dn, ava.aa_desc->ad_cname, ava.aa_value->bv_val );
Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
op->o_connid, op->o_opid, dn, ava.aa_desc->ad_cname, 0 );
#else
ava.ava_type = desc.bv_val;
ava.ava_value = value;
attr_normalize( ava.ava_type );
value_normalize( ava.ava_value.bv_val, attr_syntax( ava.ava_type ) );
Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
dn, ava.ava_type, ava.ava_value.bv_val );
Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
op->o_connid, op->o_opid, dn, ava.ava_type, 0 );
#endif
/*
* We could be serving multiple database backends. Select the
* appropriate one, or send a referral to our "referral server"
* if we don't hold it.
*/
if ( (be = select_backend( ndn )) == NULL ) {
send_ldap_result( conn, op, rc = LDAP_REFERRAL,
NULL, NULL, default_referral, NULL );
rc = 1;
goto cleanup;
}
/* make sure this backend recongizes critical controls */
rc = backend_check_controls( be, conn, op, &text ) ;
if( rc != LDAP_SUCCESS ) {
send_ldap_result( conn, op, rc,
NULL, text, NULL, NULL );
goto cleanup;
}
/* deref suffix alias if appropriate */
ndn = suffix_alias( be, ndn );
if ( be->be_compare ) {
(*be->be_compare)( be, conn, op, dn, ndn, &ava );
} else {
send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
NULL, "compare function not implemented", NULL, NULL );
}
cleanup:
free( dn );
free( ndn );
free( desc.bv_val );
free( value.bv_val );
#ifdef SLAPD_SCHEMA_NOT_COMPAT
if( ava.aa_desc != NULL ) {
ad_free( ava.aa_desc, 1 );
}
#endif
return rc;
}