1/*	$NetBSD$	*/
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_export_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
29 */
30
31#include "mech_locl.h"
32
33GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
34gss_export_sec_context(OM_uint32 *minor_status,
35    gss_ctx_id_t *context_handle,
36    gss_buffer_t interprocess_token)
37{
38	OM_uint32 major_status;
39	struct _gss_context *ctx = (struct _gss_context *) *context_handle;
40	gssapi_mech_interface m = ctx->gc_mech;
41	gss_buffer_desc buf;
42
43	_mg_buffer_zero(interprocess_token);
44
45	major_status = m->gm_export_sec_context(minor_status,
46	    &ctx->gc_ctx, &buf);
47
48	if (major_status == GSS_S_COMPLETE) {
49		unsigned char *p;
50
51		free(ctx);
52		*context_handle = GSS_C_NO_CONTEXT;
53		interprocess_token->length = buf.length
54			+ 2 + m->gm_mech_oid.length;
55		interprocess_token->value = malloc(interprocess_token->length);
56		if (!interprocess_token->value) {
57			/*
58			 * We are in trouble here - the context is
59			 * already gone. This is allowed as long as we
60			 * set the caller's context_handle to
61			 * GSS_C_NO_CONTEXT, which we did above.
62			 * Return GSS_S_FAILURE.
63			 */
64			_mg_buffer_zero(interprocess_token);
65			*minor_status = ENOMEM;
66			return (GSS_S_FAILURE);
67		}
68		p = interprocess_token->value;
69		p[0] = m->gm_mech_oid.length >> 8;
70		p[1] = m->gm_mech_oid.length;
71		memcpy(p + 2, m->gm_mech_oid.elements, m->gm_mech_oid.length);
72		memcpy(p + 2 + m->gm_mech_oid.length, buf.value, buf.length);
73		gss_release_buffer(minor_status, &buf);
74	} else {
75		_gss_mg_error(m, major_status, *minor_status);
76	}
77
78	return (major_status);
79}
80