xref: /freebsd/crypto/krb5/src/lib/gssapi/krb5/context_time.c (revision f1c4c3daccbaf3820f0e2224de53df12fc952fcc)
1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /*
3  * Copyright 1993 by OpenVision Technologies, Inc.
4  *
5  * Permission to use, copy, modify, distribute, and sell this software
6  * and its documentation for any purpose is hereby granted without fee,
7  * provided that the above copyright notice appears in all copies and
8  * that both that copyright notice and this permission notice appear in
9  * supporting documentation, and that the name of OpenVision not be used
10  * in advertising or publicity pertaining to distribution of the software
11  * without specific, written prior permission. OpenVision makes no
12  * representations about the suitability of this software for any
13  * purpose.  It is provided "as is" without express or implied warranty.
14  *
15  * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17  * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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19  * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
20  * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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22  */
23 
24 #include "gssapiP_krb5.h"
25 
26 /*
27  * $Id$
28  */
29 
30 OM_uint32 KRB5_CALLCONV
krb5_gss_context_time(OM_uint32 * minor_status,gss_ctx_id_t context_handle,OM_uint32 * time_rec)31 krb5_gss_context_time(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
32                       OM_uint32 *time_rec)
33 {
34     krb5_error_code code;
35     krb5_gss_ctx_id_rec *ctx;
36     krb5_timestamp now, start;
37 
38     ctx = (krb5_gss_ctx_id_rec *) context_handle;
39 
40     if (ctx->terminated || !ctx->established) {
41         *minor_status = KG_CTX_INCOMPLETE;
42         return(GSS_S_NO_CONTEXT);
43     }
44 
45     if ((code = krb5_timeofday(ctx->k5_context, &now))) {
46         *minor_status = code;
47         save_error_info(*minor_status, ctx->k5_context);
48         return(GSS_S_FAILURE);
49     }
50 
51     /* Add the maximum allowable clock skew for acceptor contexts. */
52     start = ctx->initiate ? now : ts_incr(now, -ctx->k5_context->clockskew);
53     *time_rec = ts_interval(start, ctx->krb_times.endtime);
54     *minor_status = 0;
55     return (*time_rec == 0) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
56 }
57