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      1 /*	$NetBSD: gss_delete_sec_context.c,v 1.2 2017/01/28 21:31:46 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 Doug Rabson
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  *	$FreeBSD: src/lib/libgssapi/gss_delete_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
     29  */
     30 
     31 #include "mech_locl.h"
     32 
     33 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
     34 gss_delete_sec_context(OM_uint32 *minor_status,
     35     gss_ctx_id_t *context_handle,
     36     gss_buffer_t output_token)
     37 {
     38 	OM_uint32 major_status = GSS_S_COMPLETE;
     39 	struct _gss_context *ctx = (struct _gss_context *) *context_handle;
     40 
     41 	if (output_token)
     42 	    _mg_buffer_zero(output_token);
     43 
     44 	*minor_status = 0;
     45 	if (ctx) {
     46 		/*
     47 		 * If we have an implementation ctx, delete it,
     48 		 * otherwise fake an empty token.
     49 		 */
     50 		if (ctx->gc_ctx) {
     51 			major_status = ctx->gc_mech->gm_delete_sec_context(
     52 				minor_status, &ctx->gc_ctx, output_token);
     53 		}
     54 		free(ctx);
     55 		*context_handle = GSS_C_NO_CONTEXT;
     56 	}
     57 
     58 	return (major_status);
     59 }
     60