1 /* 2 * Copyright (c) 1997 - 2003 Kungliga Tekniska H�gskolan 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 "krb5/gsskrb5_locl.h" 35 36 RCSID("$Id: context_time.c 19031 2006-11-13 18:02:57Z lha $"); 37 38 OM_uint32 39 _gsskrb5_lifetime_left(OM_uint32 *minor_status, 40 krb5_context context, 41 OM_uint32 lifetime, 42 OM_uint32 *lifetime_rec) 43 { 44 krb5_timestamp timeret; 45 krb5_error_code kret; 46 47 if (lifetime == 0) { 48 *lifetime_rec = GSS_C_INDEFINITE; 49 return GSS_S_COMPLETE; 50 } 51 52 kret = krb5_timeofday(context, &timeret); 53 if (kret) { 54 *minor_status = kret; 55 return GSS_S_FAILURE; 56 } 57 58 if (lifetime < timeret) 59 *lifetime_rec = 0; 60 else 61 *lifetime_rec = lifetime - timeret; 62 63 return GSS_S_COMPLETE; 64 } 65 66 67 OM_uint32 _gsskrb5_context_time 68 (OM_uint32 * minor_status, 69 const gss_ctx_id_t context_handle, 70 OM_uint32 * time_rec 71 ) 72 { 73 krb5_context context; 74 OM_uint32 lifetime; 75 OM_uint32 major_status; 76 const gsskrb5_ctx ctx = (const gsskrb5_ctx) context_handle; 77 78 GSSAPI_KRB5_INIT (&context); 79 80 HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex); 81 lifetime = ctx->lifetime; 82 HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex); 83 84 major_status = _gsskrb5_lifetime_left(minor_status, context, 85 lifetime, time_rec); 86 if (major_status != GSS_S_COMPLETE) 87 return major_status; 88 89 *minor_status = 0; 90 91 if (*time_rec == 0) 92 return GSS_S_CONTEXT_EXPIRED; 93 94 return GSS_S_COMPLETE; 95 } 96