1.\" $NetBSD: krb5_timeofday.3,v 1.1.1.2 2011/04/14 14:09:23 elric Exp $ 2.\" 3.\" Id 4.\" 5.\" Copyright (c) 2001, 2003, 2006 Kungliga Tekniska Högskolan 6.\" (Royal Institute of Technology, Stockholm, Sweden). 7.\" All rights reserved. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 20.\" 3. Neither the name of the Institute nor the names of its contributors 21.\" may be used to endorse or promote products derived from this software 22.\" without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" Id 37.\" 38.Dd Sepember 16, 2006 39.Dt KRB5_TIMEOFDAY 3 40.Os 41.Sh NAME 42.Nm krb5_timeofday , 43.Nm krb5_set_real_time , 44.Nm krb5_us_timeofday , 45.Nm krb5_format_time , 46.Nm krb5_string_to_deltat 47.Nd Kerberos 5 time handling functions 48.Sh LIBRARY 49Kerberos 5 Library (libkrb5, -lkrb5) 50.Sh SYNOPSIS 51.In krb5/krb5.h 52.Pp 53.Li krb5_timestamp ; 54.Pp 55.Li krb5_deltat ; 56.Ft krb5_error_code 57.Fo krb5_set_real_time 58.Fa "krb5_context context" 59.Fa "krb5_timestamp sec" 60.Fa "int32_t usec" 61.Fc 62.Ft krb5_error_code 63.Fo krb5_timeofday 64.Fa "krb5_context context" 65.Fa "krb5_timestamp *timeret" 66.Fc 67.Ft krb5_error_code 68.Fo krb5_us_timeofday 69.Fa "krb5_context context" 70.Fa "krb5_timestamp *sec" 71.Fa "int32_t *usec" 72.Fc 73.Ft krb5_error_code 74.Fo krb5_format_time 75.Fa "krb5_context context" 76.Fa "time_t t" 77.Fa "char *s" 78.Fa "size_t len" 79.Fa "krb5_boolean include_time" 80.Fc 81.Ft krb5_error_code 82.Fo krb5_string_to_deltat 83.Fa "const char *string" 84.Fa "krb5_deltat *deltat" 85.Fc 86.Sh DESCRIPTION 87.Nm krb5_set_real_time 88sets the absolute time that the caller knows the KDC has. 89With this the Kerberos library can calculate the relative 90difference between the KDC time and the local system time and store it 91in the 92.Fa context . 93With this information the Kerberos library can adjust all time stamps 94in Kerberos packages. 95.Pp 96.Fn krb5_timeofday 97returns the current time, but adjusted with the time difference 98between the local host and the KDC. 99.Fn krb5_us_timeofday 100also returns microseconds. 101.Pp 102.Nm krb5_format_time 103formats the time 104.Fa t 105into the string 106.Fa s 107of length 108.Fa len . 109If 110.Fa include_time 111is set, the time is set include_time. 112.Pp 113.Nm krb5_string_to_deltat 114parses delta time 115.Fa string 116into 117.Fa deltat . 118.Sh SEE ALSO 119.Xr gettimeofday 2 , 120.Xr krb5 3 121