1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <err.h> 34 #include <locale.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <time.h> 39 40 #include "calendar.h" 41 42 static time_t time1, time2; 43 const struct tm tm0; 44 char dayname[100]; 45 int year1, year2; 46 47 48 void 49 settimes(time_t now, int before, int after, int friday, struct tm *tp1, struct tm *tp2) 50 { 51 struct tm tp; 52 53 localtime_r(&now, &tp); 54 55 /* Friday displays Monday's events */ 56 if (after == 0 && before == 0 && friday != -1) 57 after = tp.tm_wday == friday ? 3 : 1; 58 59 time1 = now - SECSPERDAY * before; 60 localtime_r(&time1, tp1); 61 year1 = 1900 + tp1->tm_year; 62 time2 = now + SECSPERDAY * after; 63 localtime_r(&time2, tp2); 64 year2 = 1900 + tp2->tm_year; 65 66 strftime(dayname, sizeof(dayname) - 1, "%A, %d %B %Y", tp1); 67 68 setnnames(); 69 } 70 71 /* convert Day[/Month][/Year] into unix time (since 1970) 72 * Day: two digits, Month: two digits, Year: digits 73 */ 74 time_t 75 Mktime(char *dp) 76 { 77 time_t t; 78 int d, m, y; 79 struct tm tm, tp; 80 81 (void)time(&t); 82 localtime_r(&t, &tp); 83 84 tm = tm0; 85 tm.tm_mday = tp.tm_mday; 86 tm.tm_mon = tp.tm_mon; 87 tm.tm_year = tp.tm_year; 88 89 switch (sscanf(dp, "%d.%d.%d", &d, &m, &y)) { 90 case 3: 91 if (y > 1900) 92 y -= 1900; 93 tm.tm_year = y; 94 /* FALLTHROUGH */ 95 case 2: 96 tm.tm_mon = m - 1; 97 /* FALLTHROUGH */ 98 case 1: 99 tm.tm_mday = d; 100 } 101 102 #ifdef DEBUG 103 fprintf(stderr, "Mktime: %d %d %s\n", 104 (int)mktime(&tm), (int)t, asctime(&tm)); 105 #endif 106 return (mktime(&tm)); 107 } 108