1210967Spjd/*
2210967Spjd * Copyright (c) 1997 - 2003 Kungliga Tekniska H��gskolan
3210967Spjd * (Royal Institute of Technology, Stockholm, Sweden).
4210967Spjd * All rights reserved.
5210967Spjd *
6210967Spjd * Redistribution and use in source and binary forms, with or without
7210967Spjd * modification, are permitted provided that the following conditions
8210967Spjd * are met:
9211474Spjd *
10210967Spjd * 1. Redistributions of source code must retain the above copyright
11210967Spjd *    notice, this list of conditions and the following disclaimer.
12210967Spjd *
13210967Spjd * 2. Redistributions in binary form must reproduce the above copyright
14210967Spjd *    notice, this list of conditions and the following disclaimer in the
15211474Spjd *    documentation and/or other materials provided with the distribution.
16211474Spjd *
17211474Spjd * 3. Neither the name of the Institute nor the names of its contributors
18211474Spjd *    may be used to endorse or promote products derived from this software
19211474Spjd *    without specific prior written permission.
20211474Spjd *
21211474Spjd * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22210967Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "gsskrb5_locl.h"
35
36OM_uint32
37_gsskrb5_lifetime_left(OM_uint32 *minor_status,
38		       krb5_context context,
39		       OM_uint32 lifetime,
40		       OM_uint32 *lifetime_rec)
41{
42    krb5_timestamp timeret;
43    krb5_error_code kret;
44
45    if (lifetime == 0) {
46	*lifetime_rec = GSS_C_INDEFINITE;
47	return GSS_S_COMPLETE;
48    }
49
50    kret = krb5_timeofday(context, &timeret);
51    if (kret) {
52	*minor_status = kret;
53	return GSS_S_FAILURE;
54    }
55
56    if (lifetime < timeret)
57	*lifetime_rec = 0;
58    else
59	*lifetime_rec = lifetime - timeret;
60
61    return GSS_S_COMPLETE;
62}
63
64
65OM_uint32 GSSAPI_CALLCONV _gsskrb5_context_time
66           (OM_uint32 * minor_status,
67            const gss_ctx_id_t context_handle,
68            OM_uint32 * time_rec
69           )
70{
71    krb5_context context;
72    OM_uint32 lifetime;
73    OM_uint32 major_status;
74    const gsskrb5_ctx ctx = (const gsskrb5_ctx) context_handle;
75
76    GSSAPI_KRB5_INIT (&context);
77
78    HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
79    lifetime = ctx->lifetime;
80    HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
81
82    major_status = _gsskrb5_lifetime_left(minor_status, context,
83					  lifetime, time_rec);
84    if (major_status != GSS_S_COMPLETE)
85	return major_status;
86
87    *minor_status = 0;
88
89    if (*time_rec == 0)
90	return GSS_S_CONTEXT_EXPIRED;
91
92    return GSS_S_COMPLETE;
93}
94