1/* $NetBSD: time.c,v 1.1.1.1 2011/04/13 18:15:38 elric Exp $ */ 2 3/* 4 * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include "krb5_locl.h" 37 38/** 39 * Set the absolute time that the caller knows the kdc has so the 40 * kerberos library can calculate the relative diffrence beteen the 41 * KDC time and local system time. 42 * 43 * @param context Keberos 5 context. 44 * @param sec The applications new of "now" in seconds 45 * @param usec The applications new of "now" in micro seconds 46 47 * @return Kerberos 5 error code, see krb5_get_error_message(). 48 * 49 * @ingroup krb5 50 */ 51 52KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 53krb5_set_real_time (krb5_context context, 54 krb5_timestamp sec, 55 int32_t usec) 56{ 57 struct timeval tv; 58 59 gettimeofday(&tv, NULL); 60 61 context->kdc_sec_offset = sec - tv.tv_sec; 62 63 /** 64 * If the caller passes in a negative usec, its assumed to be 65 * unknown and the function will use the current time usec. 66 */ 67 if (usec >= 0) { 68 context->kdc_usec_offset = usec - tv.tv_usec; 69 70 if (context->kdc_usec_offset < 0) { 71 context->kdc_sec_offset--; 72 context->kdc_usec_offset += 1000000; 73 } 74 } else 75 context->kdc_usec_offset = tv.tv_usec; 76 77 return 0; 78} 79 80/* 81 * return ``corrected'' time in `timeret'. 82 */ 83 84KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 85krb5_timeofday (krb5_context context, 86 krb5_timestamp *timeret) 87{ 88 *timeret = time(NULL) + context->kdc_sec_offset; 89 return 0; 90} 91 92/* 93 * like gettimeofday but with time correction to the KDC 94 */ 95 96KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 97krb5_us_timeofday (krb5_context context, 98 krb5_timestamp *sec, 99 int32_t *usec) 100{ 101 struct timeval tv; 102 103 gettimeofday (&tv, NULL); 104 105 *sec = tv.tv_sec + context->kdc_sec_offset; 106 *usec = tv.tv_usec; /* XXX */ 107 return 0; 108} 109 110KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 111krb5_format_time(krb5_context context, time_t t, 112 char *s, size_t len, krb5_boolean include_time) 113{ 114 struct tm *tm; 115 if(context->log_utc) 116 tm = gmtime (&t); 117 else 118 tm = localtime(&t); 119 if(tm == NULL || 120 strftime(s, len, include_time ? context->time_fmt : context->date_fmt, tm) == 0) 121 snprintf(s, len, "%ld", (long)t); 122 return 0; 123} 124 125KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 126krb5_string_to_deltat(const char *string, krb5_deltat *deltat) 127{ 128 if((*deltat = parse_time(string, "s")) == -1) 129 return KRB5_DELTAT_BADFORMAT; 130 return 0; 131} 132