1/*
2 * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * 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		       time_t endtime,
40		       OM_uint32 *lifetime)
41{
42    krb5_timestamp timeret;
43    krb5_error_code kret;
44
45    if (endtime == INT_MAX) {
46	*lifetime = 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 (endtime < timeret)
57	*lifetime = 0;
58    else
59	*lifetime = (OM_uint32)(endtime - 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    time_t endtime;
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    endtime = ctx->endtime;
80    HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
81
82    major_status = _gsskrb5_lifetime_left(minor_status, context,
83					  endtime, 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