1/*	$NetBSD: context_time.c,v 1.2 2017/01/28 21:31:46 christos Exp $	*/
2
3/*
4 * Copyright (c) 1997 - 2003 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include "gsskrb5_locl.h"
37
38OM_uint32
39_gsskrb5_lifetime_left(OM_uint32 *minor_status,
40		       krb5_context context,
41		       OM_uint32 endtime,
42		       OM_uint32 *lifetime_rec)
43{
44    krb5_timestamp now;
45    krb5_error_code kret;
46
47    if (endtime == 0) {
48	*lifetime_rec = GSS_C_INDEFINITE;
49	return GSS_S_COMPLETE;
50    }
51
52    kret = krb5_timeofday(context, &now);
53    if (kret) {
54        *lifetime_rec = 0;
55	*minor_status = kret;
56	return GSS_S_FAILURE;
57    }
58
59    if (endtime < now)
60	*lifetime_rec = 0;
61    else
62	*lifetime_rec = endtime - now;
63
64    return GSS_S_COMPLETE;
65}
66
67
68OM_uint32 GSSAPI_CALLCONV _gsskrb5_context_time
69           (OM_uint32 * minor_status,
70            gss_const_ctx_id_t context_handle,
71            OM_uint32 * time_rec
72           )
73{
74    krb5_context context;
75    OM_uint32 endtime;
76    OM_uint32 major_status;
77    const gsskrb5_ctx ctx = (const gsskrb5_ctx) context_handle;
78
79    GSSAPI_KRB5_INIT (&context);
80
81    HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
82    endtime = ctx->endtime;
83    HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
84
85    major_status = _gsskrb5_lifetime_left(minor_status, context,
86					  endtime, time_rec);
87    if (major_status != GSS_S_COMPLETE)
88	return major_status;
89
90    *minor_status = 0;
91
92    if (*time_rec == 0)
93	return GSS_S_CONTEXT_EXPIRED;
94
95    return GSS_S_COMPLETE;
96}
97