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