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/*
* Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb5_locl.h"
/**
* Set the absolute time that the caller knows the kdc has so the
* kerberos library can calculate the relative diffrence beteen the
* KDC time and local system time.
*
* @param context Keberos 5 context.
* @param sec The applications new of "now" in seconds
* @param usec The applications new of "now" in micro seconds
* @return Kerberos 5 error code, see krb5_get_error_message().
*
* @ingroup krb5
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_set_real_time (krb5_context context,
krb5_timestamp sec,
int32_t usec)
{
struct timeval tv;
gettimeofday(&tv, NULL);
context->kdc_sec_offset = sec - tv.tv_sec;
/**
* If the caller passes in a negative usec, its assumed to be
* unknown and the function will use the current time usec.
*/
if (usec >= 0) {
context->kdc_usec_offset = usec - tv.tv_usec;
if (context->kdc_usec_offset < 0) {
context->kdc_sec_offset--;
context->kdc_usec_offset += 1000000;
}
} else
context->kdc_usec_offset = tv.tv_usec;
return 0;
}
/*
* return ``corrected'' time in `timeret'.
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_timeofday (krb5_context context,
krb5_timestamp *timeret)
{
*timeret = time(NULL) + context->kdc_sec_offset;
return 0;
}
/*
* like gettimeofday but with time correction to the KDC
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_us_timeofday (krb5_context context,
krb5_timestamp *sec,
int32_t *usec)
{
struct timeval tv;
gettimeofday (&tv, NULL);
*sec = tv.tv_sec + context->kdc_sec_offset;
*usec = tv.tv_usec; /* XXX */
return 0;
}
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_format_time(krb5_context context, time_t t,
char *s, size_t len, krb5_boolean include_time)
{
struct tm *tm;
if(context->log_utc)
tm = gmtime (&t);
else
tm = localtime(&t);
if(tm == NULL ||
strftime(s, len, include_time ? context->time_fmt : context->date_fmt, tm) == 0)
snprintf(s, len, "%ld", (long)t);
return 0;
}
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_string_to_deltat(const char *string, krb5_deltat *deltat)
{
if((*deltat = parse_time(string, "s")) == -1)
return KRB5_DELTAT_BADFORMAT;
return 0;
}
krb5_deltat
krb5_time_abs(krb5_deltat t1, krb5_deltat t2)
{
krb5_deltat t = t1 - t2;
if (t < 0)
return -t;
return t;
}
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