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110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2004 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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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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#ifdef HAVE_TLS
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int
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starttls_extop ( Operation *op, SlapReply *rs )
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{
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void *ctx;
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int rc;
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if ( op->ore_reqdata != NULL ) {
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/* no request data should be provided */
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rs->sr_text = "no request data expected";
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return LDAP_PROTOCOL_ERROR;
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}
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/* acquire connection lock */
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ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
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/* can't start TLS if it is already started */
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if (op->o_conn->c_is_tls != 0) {
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rs->sr_text = "TLS already started";
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rc = LDAP_OPERATIONS_ERROR;
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goto done;
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}
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/* can't start TLS if there are other op's around */
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if (( !LDAP_STAILQ_EMPTY(&op->o_conn->c_ops) &&
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(LDAP_STAILQ_FIRST(&op->o_conn->c_ops) != op ||
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LDAP_STAILQ_NEXT(op, o_next) != NULL)) ||
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( !LDAP_STAILQ_EMPTY(&op->o_conn->c_pending_ops) ))
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{
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rs->sr_text = "cannot start TLS when operations are outstanding";
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rc = LDAP_OPERATIONS_ERROR;
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goto done;
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}
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if ( !( global_disallows & SLAP_DISALLOW_TLS_2_ANON ) &&
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( op->o_conn->c_dn.bv_len != 0 ) )
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{
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Statslog( LDAP_DEBUG_STATS,
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"conn=%lu op=%lu AUTHZ anonymous mech=starttls ssf=0\n",
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op->o_connid, op->o_opid, 0, 0, 0 );
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/* force to anonymous */
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connection2anonymous( op->o_conn );
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}
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if ( ( global_disallows & SLAP_DISALLOW_TLS_AUTHC ) &&
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( op->o_conn->c_dn.bv_len != 0 ) )
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{
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rs->sr_text = "cannot start TLS after authentication";
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rc = LDAP_OPERATIONS_ERROR;
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goto done;
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}
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/* fail if TLS could not be initialized */
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if ( slap_tls_ctx == NULL ) {
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if (default_referral != NULL) {
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/* caller will put the referral in the result */
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rc = LDAP_REFERRAL;
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goto done;
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}
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rs->sr_text = "Could not initialize TLS";
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rc = LDAP_UNAVAILABLE;
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goto done;
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}
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op->o_conn->c_is_tls = 1;
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op->o_conn->c_needs_tls_accept = 1;
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rc = LDAP_SUCCESS;
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done:
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/* give up connection lock */
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ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
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/* FIXME: RACE CONDITION! we give up lock before sending result
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* Should be resolved by reworking connection state, not
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* by moving send here (so as to ensure proper TLS sequencing)
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*/
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return rc;
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}
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#endif /* HAVE_TLS */
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