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https://git.openldap.org/openldap/openldap.git
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114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1999-2000 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 are permitted only
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* as authorized by the OpenLDAP Public License. A copy of this
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* license is available at http://www.OpenLDAP.org/license.html or
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* in file LICENSE in the top-level directory of the distribution.
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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 (
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Connection *conn,
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Operation *op,
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const char * reqoid,
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struct berval * reqdata,
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char ** rspoid,
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struct berval ** rspdata,
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LDAPControl ***rspctrls,
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const char ** text,
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struct berval *** refs )
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{
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void *ctx;
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int rc;
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if ( reqdata != NULL ) {
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/* no request data should be provided */
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*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( &conn->c_mutex );
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/* can't start TLS if it is already started */
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if (conn->c_is_tls != 0) {
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*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 (( !STAILQ_EMPTY(&conn->c_ops) &&
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(STAILQ_FIRST(&conn->c_ops) != op ||
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STAILQ_NEXT(op, o_next) != NULL)) ||
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( !STAILQ_EMPTY(&conn->c_pending_ops) ))
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{
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*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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( conn->c_dn.bv_len != 0 ) )
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{
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/* force to anonymous */
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connection2anonymous( conn );
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}
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if ( ( global_disallows & SLAP_DISALLOW_TLS_AUTHC ) &&
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( conn->c_dn.bv_len != 0 ) )
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{
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*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 (ldap_pvt_tls_get_option( NULL, LDAP_OPT_X_TLS_CTX, &ctx ) != 0
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|| ctx == NULL)
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{
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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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*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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conn->c_is_tls = 1;
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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( &conn->c_mutex );
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/*
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* 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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