1 /* 2 * Copyright (c) 1997-2004 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "krb5_locl.h" 35 36 RCSID("$Id: time.c 14308 2004-10-13 17:57:11Z lha $"); 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 44 krb5_error_code KRB5_LIB_FUNCTION 45 krb5_set_real_time (krb5_context context, 46 krb5_timestamp sec, 47 int32_t usec) 48 { 49 struct timeval tv; 50 51 gettimeofday(&tv, NULL); 52 53 context->kdc_sec_offset = sec - tv.tv_sec; 54 context->kdc_usec_offset = usec - tv.tv_usec; 55 56 if (context->kdc_usec_offset < 0) { 57 context->kdc_sec_offset--; 58 context->kdc_usec_offset += 1000000; 59 } 60 return 0; 61 } 62 63 /* 64 * return ``corrected'' time in `timeret'. 65 */ 66 67 krb5_error_code KRB5_LIB_FUNCTION 68 krb5_timeofday (krb5_context context, 69 krb5_timestamp *timeret) 70 { 71 *timeret = time(NULL) + context->kdc_sec_offset; 72 return 0; 73 } 74 75 /* 76 * like gettimeofday but with time correction to the KDC 77 */ 78 79 krb5_error_code KRB5_LIB_FUNCTION 80 krb5_us_timeofday (krb5_context context, 81 krb5_timestamp *sec, 82 int32_t *usec) 83 { 84 struct timeval tv; 85 86 gettimeofday (&tv, NULL); 87 88 *sec = tv.tv_sec + context->kdc_sec_offset; 89 *usec = tv.tv_usec; /* XXX */ 90 return 0; 91 } 92 93 krb5_error_code KRB5_LIB_FUNCTION 94 krb5_format_time(krb5_context context, time_t t, 95 char *s, size_t len, krb5_boolean include_time) 96 { 97 struct tm *tm; 98 if(context->log_utc) 99 tm = gmtime (&t); 100 else 101 tm = localtime(&t); 102 if(tm == NULL || 103 strftime(s, len, include_time ? context->time_fmt : context->date_fmt, tm) == 0) 104 snprintf(s, len, "%ld", (long)t); 105 return 0; 106 } 107 108 krb5_error_code KRB5_LIB_FUNCTION 109 krb5_string_to_deltat(const char *string, krb5_deltat *deltat) 110 { 111 if((*deltat = parse_time(string, "s")) == -1) 112 return KRB5_DELTAT_BADFORMAT; 113 return 0; 114 } 115