/* $OpenLDAP$ */
/*
- * Copyright 1999 The OpenLDAP Foundation.
+ * Copyright 1999-2002 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted only
#include <stdio.h>
#include <ac/socket.h>
+#include <ldap_pvt.h>
+
#include "slap.h"
#ifdef HAVE_TLS
int
starttls_extop (
- SLAP_EXTOP_CALLBACK_FN cb,
Connection *conn,
Operation *op,
- char * oid,
+ const char * reqoid,
struct berval * reqdata,
+ char ** rspoid,
struct berval ** rspdata,
LDAPControl ***rspctrls,
- char ** text )
+ const char ** text,
+ BVarray * refs )
{
+ void *ctx;
+ int rc;
+
if ( reqdata != NULL ) {
/* no request data should be provided */
+ *text = "no request data expected";
return LDAP_PROTOCOL_ERROR;
}
+ /* acquire connection lock */
+ ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+
/* can't start TLS if it is already started */
- if (conn->c_is_tls != 0)
- return(LDAP_OPERATIONS_ERROR);
+ if (conn->c_is_tls != 0) {
+ *text = "TLS already started";
+ rc = LDAP_OPERATIONS_ERROR;
+ goto done;
+ }
/* can't start TLS if there are other op's around */
- if (conn->c_ops != NULL) {
- if (conn->c_ops != op || op->o_next != NULL)
- return(LDAP_OPERATIONS_ERROR);
+ if (( !LDAP_STAILQ_EMPTY(&conn->c_ops) &&
+ (LDAP_STAILQ_FIRST(&conn->c_ops) != op ||
+ LDAP_STAILQ_NEXT(op, o_next) != NULL)) ||
+ ( !LDAP_STAILQ_EMPTY(&conn->c_pending_ops) ))
+ {
+ *text = "cannot start TLS when operations are outstanding";
+ rc = LDAP_OPERATIONS_ERROR;
+ goto done;
}
- if (conn->c_pending_ops != NULL) {
- if (conn->c_pending_ops != op || op->o_next != NULL)
- return(LDAP_OPERATIONS_ERROR);
+
+ if ( !( global_disallows & SLAP_DISALLOW_TLS_2_ANON ) &&
+ ( conn->c_dn.bv_len != 0 ) )
+ {
+ /* force to anonymous */
+ connection2anonymous( conn );
}
- /* here's some pseudo-code if HAVE_TLS is defined
- * but for some reason TLS is not available.
- */
- /*
- if (tls not really supported) {
- if (referral exists) {
- // caller will need to put the referral into the result
- return(LDAP_REFERRAL);
- }
- return(LDAP_UNAVAILABLE);
+ if ( ( global_disallows & SLAP_DISALLOW_TLS_AUTHC ) &&
+ ( conn->c_dn.bv_len != 0 ) )
+ {
+ *text = "cannot start TLS after authentication";
+ rc = LDAP_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ /* fail if TLS could not be initialized */
+ if (ldap_pvt_tls_get_option( NULL, LDAP_OPT_X_TLS_CTX, &ctx ) != 0
+ || ctx == NULL)
+ {
+ if (default_referral != NULL) {
+ /* caller will put the referral in the result */
+ rc = LDAP_REFERRAL;
+ goto done;
}
- */
+
+ *text = "Could not initialize TLS";
+ rc = LDAP_UNAVAILABLE;
+ goto done;
+ }
conn->c_is_tls = 1;
conn->c_needs_tls_accept = 1;
- return(LDAP_SUCCESS);
+ rc = LDAP_SUCCESS;
+
+done:
+ /* give up connection lock */
+ ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+ /*
+ * RACE CONDITION: we give up lock before sending result
+ * Should be resolved by reworking connection state, not
+ * by moving send here (so as to ensure proper TLS sequencing)
+ */
+
+ return rc;
}
#endif /* HAVE_TLS */