mirror of
https://git.openldap.org/openldap/openldap.git
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316 lines
8.0 KiB
C
316 lines
8.0 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/*
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* Copyright (c) 1995 Regents of the University of Michigan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of Michigan at Ann Arbor. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/socket.h>
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#include "ldap_pvt.h"
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#include "slap.h"
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static int compare_entry(
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Connection *conn,
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Operation *op,
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Entry *e,
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AttributeAssertion *ava );
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int
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do_compare(
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Connection *conn,
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Operation *op
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)
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{
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Entry *entry = NULL;
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char *dn = NULL, *ndn=NULL;
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struct berval desc;
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struct berval value;
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struct berval *nvalue;
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AttributeAssertion ava;
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Backend *be;
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int rc = LDAP_SUCCESS;
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const char *text = NULL;
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int manageDSAit;
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ava.aa_desc = NULL;
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desc.bv_val = NULL;
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value.bv_val = NULL;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
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"do_compare: conn %d\n", conn->c_connid ));
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#else
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Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
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#endif
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/*
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* Parse the compare request. It looks like this:
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*
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* CompareRequest := [APPLICATION 14] SEQUENCE {
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* entry DistinguishedName,
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* ava SEQUENCE {
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* type AttributeType,
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* value AttributeValue
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* }
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* }
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*/
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if ( ber_scanf( op->o_ber, "{a" /*}*/, &dn ) == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
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#else
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Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
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#endif
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send_ldap_disconnect( conn, op,
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LDAP_PROTOCOL_ERROR, "decoding error" );
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return SLAPD_DISCONNECT;
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}
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if ( ber_scanf( op->o_ber, "{oo}", &desc, &value ) == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"do_compare: conn %d get ava failed\n", conn->c_connid ));
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#else
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Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
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#endif
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send_ldap_disconnect( conn, op,
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LDAP_PROTOCOL_ERROR, "decoding error" );
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rc = SLAPD_DISCONNECT;
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goto cleanup;
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}
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if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"do_compare: conn %d ber_scanf failed\n", conn->c_connid ));
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#else
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Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
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#endif
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send_ldap_disconnect( conn, op,
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LDAP_PROTOCOL_ERROR, "decoding error" );
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rc = SLAPD_DISCONNECT;
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goto cleanup;
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}
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if( ( rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
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"do_compare: conn %d get_ctrls failed\n", conn->c_connid ));
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#else
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Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
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#endif
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goto cleanup;
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}
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ndn = ch_strdup( dn );
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if( dn_normalize( ndn ) == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
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"do_compare: conn %d invalid dn (%s)\n",
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conn->c_connid, dn ));
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#else
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Debug( LDAP_DEBUG_ANY, "do_compare: invalid dn (%s)\n", dn, 0, 0 );
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#endif
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send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
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"invalid DN", NULL, NULL );
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goto cleanup;
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}
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rc = slap_bv2ad( &desc, &ava.aa_desc, &text );
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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goto cleanup;
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}
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rc = value_normalize( ava.aa_desc, SLAP_MR_EQUALITY, &value, &nvalue, &text );
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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goto cleanup;
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}
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ava.aa_value = nvalue;
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if( strcasecmp( ndn, LDAP_ROOT_DSE ) == 0 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
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"do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
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conn->c_connid, dn, ava.aa_desc->ad_cname.bv_val,
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ava.aa_value->bv_val ));
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#else
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Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
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dn, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
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#endif
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Statslog( LDAP_DEBUG_STATS,
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"conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
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op->o_connid, op->o_opid, dn, ava.aa_desc->ad_cname.bv_val, 0 );
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rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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goto cleanup;
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}
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rc = root_dse_info( conn, &entry, &text );
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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goto cleanup;
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}
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} else if ( strcasecmp( ndn, SLAPD_SCHEMA_DN ) == 0 ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
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"do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
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conn->c_connid, dn, ava.aa_desc->ad_cname->bv_val,
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ava.aa_value->bv_val ));
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#else
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Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
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dn, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
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#endif
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Statslog( LDAP_DEBUG_STATS,
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"conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
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op->o_connid, op->o_opid, dn, ava.aa_desc->ad_cname.bv_val, 0 );
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rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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rc = 0;
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goto cleanup;
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}
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rc = schema_info( &entry, &text );
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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rc = 0;
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goto cleanup;
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}
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}
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if( entry ) {
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rc = compare_entry( conn, op, entry, &ava );
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entry_free( entry );
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send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
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if( rc == LDAP_COMPARE_TRUE || rc == LDAP_COMPARE_FALSE ) {
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rc = 0;
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}
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goto cleanup;
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}
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manageDSAit = get_manageDSAit( op );
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/*
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* We could be serving multiple database backends. Select the
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* appropriate one, or send a referral to our "referral server"
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* if we don't hold it.
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*/
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if ( (be = select_backend( ndn, manageDSAit )) == NULL ) {
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struct berval **ref = referral_rewrite( default_referral,
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NULL, dn, LDAP_SCOPE_DEFAULT );
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send_ldap_result( conn, op, rc = LDAP_REFERRAL,
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NULL, NULL, ref ? ref : default_referral, NULL );
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ber_bvecfree( ref );
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rc = 0;
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goto cleanup;
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}
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/* check restrictions */
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rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
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if( rc != LDAP_SUCCESS ) {
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send_ldap_result( conn, op, rc,
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NULL, text, NULL, NULL );
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goto cleanup;
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}
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/* check for referrals */
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rc = backend_check_referrals( be, conn, op, dn, ndn );
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if ( rc != LDAP_SUCCESS ) {
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goto cleanup;
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}
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
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"do_compare: conn %d dn (%s) attr(%s) value (%s)\n",
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conn->c_connid, dn, ava.aa_desc->ad_cname.bv_val,
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ava.aa_value->bv_val ));
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#else
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Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
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dn, ava.aa_desc->ad_cname.bv_val, ava.aa_value->bv_val );
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#endif
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Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d CMP dn=\"%s\" attr=\"%s\"\n",
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op->o_connid, op->o_opid, dn, ava.aa_desc->ad_cname.bv_val, 0 );
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/* deref suffix alias if appropriate */
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ndn = suffix_alias( be, ndn );
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if ( be->be_compare ) {
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(*be->be_compare)( be, conn, op, dn, ndn, &ava );
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} else {
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send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
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NULL, "operation not supported within namingContext", NULL, NULL );
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}
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cleanup:
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free( dn );
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free( ndn );
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free( desc.bv_val );
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free( value.bv_val );
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return rc;
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}
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static int compare_entry(
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Connection *conn,
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Operation *op,
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Entry *e,
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AttributeAssertion *ava )
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{
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int rc = LDAP_NO_SUCH_ATTRIBUTE;
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Attribute *a;
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if ( ! access_allowed( NULL, conn, op, e,
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ava->aa_desc, ava->aa_value, ACL_COMPARE ) )
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{
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return LDAP_INSUFFICIENT_ACCESS;
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}
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for(a = attrs_find( e->e_attrs, ava->aa_desc );
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a != NULL;
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a = attrs_find( a->a_next, ava->aa_desc ))
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{
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rc = LDAP_COMPARE_FALSE;
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if ( value_find_ex( ava->aa_desc,
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SLAP_MR_VALUE_IS_IN_MR_SYNTAX,
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a->a_vals, ava->aa_value ) == 0 )
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{
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rc = LDAP_COMPARE_TRUE;
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break;
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}
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}
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return rc;
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}
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