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