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/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2021 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* Portions Copyright (c) 1990 Regents of the University of Michigan.
* All rights reserved.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include "ldap-int.h"
/* An Unbind Request looks like this:
*
* UnbindRequest ::= [APPLICATION 2] NULL
*
* and has no response. (Source: RFC 4511)
*/
int
ldap_unbind_ext(
LDAP *ld,
LDAPControl **sctrls,
LDAPControl **cctrls )
{
int rc;
assert( ld != NULL );
assert( LDAP_VALID( ld ) );
/* check client controls */
rc = ldap_int_client_controls( ld, cctrls );
if( rc != LDAP_SUCCESS ) return rc;
return ldap_ld_free( ld, 1, sctrls, cctrls );
}
int
ldap_unbind_ext_s(
LDAP *ld,
LDAPControl **sctrls,
LDAPControl **cctrls )
{
return ldap_unbind_ext( ld, sctrls, cctrls );
}
int
ldap_unbind( LDAP *ld )
{
Debug( LDAP_DEBUG_TRACE, "ldap_unbind\n", 0, 0, 0 );
return( ldap_unbind_ext( ld, NULL, NULL ) );
}
int
ldap_ld_free(
LDAP *ld,
int close,
LDAPControl **sctrls,
LDAPControl **cctrls )
{
LDAPMessage *lm, *next;
int err = LDAP_SUCCESS;
LDAP_MUTEX_LOCK( &ld->ld_ldcmutex );
/* Someone else is still using this ld. */
if (ld->ld_ldcrefcnt > 1) { /* but not last thread */
/* clean up self only */
ld->ld_ldcrefcnt--;
if ( ld->ld_error != NULL ) {
LDAP_FREE( ld->ld_error );
ld->ld_error = NULL;
}
if ( ld->ld_matched != NULL ) {
LDAP_FREE( ld->ld_matched );
ld->ld_matched = NULL;
}
if ( ld->ld_referrals != NULL) {
LDAP_VFREE(ld->ld_referrals);
ld->ld_referrals = NULL;
}
LDAP_MUTEX_UNLOCK( &ld->ld_ldcmutex );
LDAP_FREE( (char *) ld );
return( err );
}
/* This ld is the last thread. */
LDAP_MUTEX_UNLOCK( &ld->ld_ldcmutex );
/* free LDAP structure and outstanding requests/responses */
LDAP_MUTEX_LOCK( &ld->ld_req_mutex );
while ( ld->ld_requests != NULL ) {
ldap_free_request( ld, ld->ld_requests );
}
LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex );
LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
/* free and unbind from all open connections */
while ( ld->ld_conns != NULL ) {
ldap_free_connection( ld, ld->ld_conns, 1, close );
}
LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
LDAP_MUTEX_LOCK( &ld->ld_res_mutex );
for ( lm = ld->ld_responses; lm != NULL; lm = next ) {
next = lm->lm_next;
ldap_msgfree( lm );
}
if ( ld->ld_abandoned != NULL ) {
LDAP_FREE( ld->ld_abandoned );
ld->ld_abandoned = NULL;
}
LDAP_MUTEX_UNLOCK( &ld->ld_res_mutex );
/* Should already be closed by ldap_free_connection which knows not to free
* this one */
ber_int_sb_destroy( ld->ld_sb );
LBER_FREE( ld->ld_sb );
LDAP_MUTEX_LOCK( &ld->ld_ldopts_mutex );
/* final close callbacks */
{
ldaplist *ll, *next;
for ( ll = ld->ld_options.ldo_conn_cbs; ll; ll = next ) {
ldap_conncb *cb = ll->ll_data;
next = ll->ll_next;
cb->lc_del( ld, NULL, cb );
LDAP_FREE( ll );
}
}
if ( ld->ld_error != NULL ) {
LDAP_FREE( ld->ld_error );
ld->ld_error = NULL;
}
if ( ld->ld_matched != NULL ) {
LDAP_FREE( ld->ld_matched );
ld->ld_matched = NULL;
}
if ( ld->ld_referrals != NULL) {
LDAP_VFREE(ld->ld_referrals);
ld->ld_referrals = NULL;
}
if ( ld->ld_selectinfo != NULL ) {
ldap_free_select_info( ld->ld_selectinfo );
ld->ld_selectinfo = NULL;
}
if ( ld->ld_options.ldo_defludp != NULL ) {
ldap_free_urllist( ld->ld_options.ldo_defludp );
ld->ld_options.ldo_defludp = NULL;
}
#ifdef LDAP_CONNECTIONLESS
if ( ld->ld_options.ldo_peer != NULL ) {
LDAP_FREE( ld->ld_options.ldo_peer );
ld->ld_options.ldo_peer = NULL;
}
if ( ld->ld_options.ldo_cldapdn != NULL ) {
LDAP_FREE( ld->ld_options.ldo_cldapdn );
ld->ld_options.ldo_cldapdn = NULL;
}
#endif
#ifdef HAVE_CYRUS_SASL
if ( ld->ld_options.ldo_def_sasl_mech != NULL ) {
LDAP_FREE( ld->ld_options.ldo_def_sasl_mech );
ld->ld_options.ldo_def_sasl_mech = NULL;
}
if ( ld->ld_options.ldo_def_sasl_realm != NULL ) {
LDAP_FREE( ld->ld_options.ldo_def_sasl_realm );
ld->ld_options.ldo_def_sasl_realm = NULL;
}
if ( ld->ld_options.ldo_def_sasl_authcid != NULL ) {
LDAP_FREE( ld->ld_options.ldo_def_sasl_authcid );
ld->ld_options.ldo_def_sasl_authcid = NULL;
}
if ( ld->ld_options.ldo_def_sasl_authzid != NULL ) {
LDAP_FREE( ld->ld_options.ldo_def_sasl_authzid );
ld->ld_options.ldo_def_sasl_authzid = NULL;
}
#endif
#ifdef HAVE_TLS
ldap_int_tls_destroy( &ld->ld_options );
#endif
if ( ld->ld_options.ldo_sctrls != NULL ) {
ldap_controls_free( ld->ld_options.ldo_sctrls );
ld->ld_options.ldo_sctrls = NULL;
}
if ( ld->ld_options.ldo_cctrls != NULL ) {
ldap_controls_free( ld->ld_options.ldo_cctrls );
ld->ld_options.ldo_cctrls = NULL;
}
LDAP_MUTEX_UNLOCK( &ld->ld_ldopts_mutex );
#ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_destroy( &ld->ld_msgid_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_conn_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_req_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_res_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_abandon_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_ldopts_mutex );
ldap_pvt_thread_mutex_destroy( &ld->ld_ldcmutex );
#endif
#ifndef NDEBUG
LDAP_TRASH(ld);
#endif
LDAP_FREE( (char *) ld->ldc );
LDAP_FREE( (char *) ld );
return( err );
}
int
ldap_destroy( LDAP *ld )
{
return ( ldap_ld_free( ld, 1, NULL, NULL ) );
}
int
ldap_unbind_s( LDAP *ld )
{
return( ldap_unbind_ext( ld, NULL, NULL ) );
}
/* FIXME: this function is called only by ldap_free_connection(),
* which, most of the times, is called with ld_req_mutex locked */
int
ldap_send_unbind(
LDAP *ld,
Sockbuf *sb,
LDAPControl **sctrls,
LDAPControl **cctrls )
{
BerElement *ber;
ber_int_t id;
Debug( LDAP_DEBUG_TRACE, "ldap_send_unbind\n", 0, 0, 0 );
#ifdef LDAP_CONNECTIONLESS
if (LDAP_IS_UDP(ld))
return LDAP_SUCCESS;
#endif
/* create a message to send */
if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
return( ld->ld_errno );
}
LDAP_NEXT_MSGID(ld, id);
/* fill it in */
if ( ber_printf( ber, "{itn" /*}*/, id,
LDAP_REQ_UNBIND ) == -1 ) {
ld->ld_errno = LDAP_ENCODING_ERROR;
ber_free( ber, 1 );
return( ld->ld_errno );
}
/* Put Server Controls */
if( ldap_int_put_controls( ld, sctrls, ber ) != LDAP_SUCCESS ) {
ber_free( ber, 1 );
return ld->ld_errno;
}
if ( ber_printf( ber, /*{*/ "N}", LDAP_REQ_UNBIND ) == -1 ) {
ld->ld_errno = LDAP_ENCODING_ERROR;
ber_free( ber, 1 );
return( ld->ld_errno );
}
ld->ld_errno = LDAP_SUCCESS;
/* send the message */
if ( ber_flush2( sb, ber, LBER_FLUSH_FREE_ALWAYS ) == -1 ) {
ld->ld_errno = LDAP_SERVER_DOWN;
}
return( ld->ld_errno );
}
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