ns_date.c revision 1.1.10.4
1 1.1.10.4 msaitoh /* $NetBSD: ns_date.c,v 1.1.10.4 2013/07/30 08:17:48 msaitoh Exp $ */ 2 1.1.10.2 msaitoh 3 1.1.10.2 msaitoh /* 4 1.1.10.2 msaitoh * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 5 1.1.10.2 msaitoh * Copyright (c) 1999 by Internet Software Consortium. 6 1.1.10.2 msaitoh * 7 1.1.10.2 msaitoh * Permission to use, copy, modify, and distribute this software for any 8 1.1.10.2 msaitoh * purpose with or without fee is hereby granted, provided that the above 9 1.1.10.2 msaitoh * copyright notice and this permission notice appear in all copies. 10 1.1.10.2 msaitoh * 11 1.1.10.2 msaitoh * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 12 1.1.10.2 msaitoh * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 1.1.10.2 msaitoh * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 14 1.1.10.2 msaitoh * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 1.1.10.2 msaitoh * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 1.1.10.2 msaitoh * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 17 1.1.10.2 msaitoh * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 1.1.10.2 msaitoh */ 19 1.1.10.2 msaitoh 20 1.1.10.2 msaitoh #include <sys/cdefs.h> 21 1.1.10.2 msaitoh #if 0 22 1.1.10.2 msaitoh static const char rcsid[] = "Id: ns_date.c,v 1.6 2005/04/27 04:56:39 sra Exp "; 23 1.1.10.2 msaitoh #else 24 1.1.10.4 msaitoh __RCSID("$NetBSD: ns_date.c,v 1.1.10.4 2013/07/30 08:17:48 msaitoh Exp $"); 25 1.1.10.2 msaitoh #endif 26 1.1.10.2 msaitoh 27 1.1.10.2 msaitoh /* Import. */ 28 1.1.10.2 msaitoh 29 1.1.10.2 msaitoh #include "port_before.h" 30 1.1.10.2 msaitoh 31 1.1.10.2 msaitoh #include <arpa/nameser.h> 32 1.1.10.2 msaitoh 33 1.1.10.2 msaitoh #include <ctype.h> 34 1.1.10.2 msaitoh #include <errno.h> 35 1.1.10.2 msaitoh #include <stdio.h> 36 1.1.10.2 msaitoh #include <string.h> 37 1.1.10.2 msaitoh #include <time.h> 38 1.1.10.2 msaitoh 39 1.1.10.2 msaitoh #include "port_after.h" 40 1.1.10.2 msaitoh 41 1.1.10.2 msaitoh #ifdef SPRINTF_CHAR 42 1.1.10.2 msaitoh # define SPRINTF(x) strlen(sprintf/**/x) 43 1.1.10.2 msaitoh #else 44 1.1.10.2 msaitoh # define SPRINTF(x) ((size_t)sprintf x) 45 1.1.10.2 msaitoh #endif 46 1.1.10.2 msaitoh 47 1.1.10.2 msaitoh /* Forward. */ 48 1.1.10.2 msaitoh 49 1.1.10.2 msaitoh static int datepart(const char *, int, int, int, int *); 50 1.1.10.2 msaitoh 51 1.1.10.2 msaitoh /* Public. */ 52 1.1.10.2 msaitoh 53 1.1.10.2 msaitoh /*% 54 1.1.10.2 msaitoh * Convert a date in ASCII into the number of seconds since 55 1.1.10.2 msaitoh * 1 January 1970 (GMT assumed). Format is yyyymmddhhmmss, all 56 1.1.10.2 msaitoh * digits required, no spaces allowed. 57 1.1.10.2 msaitoh */ 58 1.1.10.2 msaitoh 59 1.1.10.2 msaitoh u_int32_t 60 1.1.10.2 msaitoh ns_datetosecs(const char *cp, int *errp) { 61 1.1.10.2 msaitoh struct tm tim; 62 1.1.10.2 msaitoh u_int32_t result; 63 1.1.10.2 msaitoh int mdays, i; 64 1.1.10.2 msaitoh static const int days_per_month[12] = 65 1.1.10.2 msaitoh {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 66 1.1.10.2 msaitoh 67 1.1.10.2 msaitoh if (strlen(cp) != 14U) { 68 1.1.10.2 msaitoh *errp = 1; 69 1.1.10.2 msaitoh return (0); 70 1.1.10.2 msaitoh } 71 1.1.10.2 msaitoh *errp = 0; 72 1.1.10.2 msaitoh 73 1.1.10.2 msaitoh memset(&tim, 0, sizeof tim); 74 1.1.10.2 msaitoh tim.tm_year = datepart(cp + 0, 4, 1990, 9999, errp) - 1900; 75 1.1.10.2 msaitoh tim.tm_mon = datepart(cp + 4, 2, 01, 12, errp) - 1; 76 1.1.10.2 msaitoh tim.tm_mday = datepart(cp + 6, 2, 01, 31, errp); 77 1.1.10.2 msaitoh tim.tm_hour = datepart(cp + 8, 2, 00, 23, errp); 78 1.1.10.2 msaitoh tim.tm_min = datepart(cp + 10, 2, 00, 59, errp); 79 1.1.10.2 msaitoh tim.tm_sec = datepart(cp + 12, 2, 00, 59, errp); 80 1.1.10.2 msaitoh if (*errp) /*%< Any parse errors? */ 81 1.1.10.2 msaitoh return (0); 82 1.1.10.2 msaitoh 83 1.1.10.2 msaitoh /* 84 1.1.10.2 msaitoh * OK, now because timegm() is not available in all environments, 85 1.1.10.2 msaitoh * we will do it by hand. Roll up sleeves, curse the gods, begin! 86 1.1.10.2 msaitoh */ 87 1.1.10.2 msaitoh 88 1.1.10.2 msaitoh #define SECS_PER_DAY ((u_int32_t)24*60*60) 89 1.1.10.2 msaitoh #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) 90 1.1.10.2 msaitoh 91 1.1.10.2 msaitoh result = tim.tm_sec; /*%< Seconds */ 92 1.1.10.2 msaitoh result += tim.tm_min * 60; /*%< Minutes */ 93 1.1.10.2 msaitoh result += tim.tm_hour * (60*60); /*%< Hours */ 94 1.1.10.2 msaitoh result += (tim.tm_mday - 1) * SECS_PER_DAY; /*%< Days */ 95 1.1.10.2 msaitoh /* Months are trickier. Look without leaping, then leap */ 96 1.1.10.2 msaitoh mdays = 0; 97 1.1.10.2 msaitoh for (i = 0; i < tim.tm_mon; i++) 98 1.1.10.2 msaitoh mdays += days_per_month[i]; 99 1.1.10.2 msaitoh result += mdays * SECS_PER_DAY; /*%< Months */ 100 1.1.10.2 msaitoh if (tim.tm_mon > 1 && isleap(1900+tim.tm_year)) 101 1.1.10.2 msaitoh result += SECS_PER_DAY; /*%< Add leapday for this year */ 102 1.1.10.2 msaitoh /* First figure years without leapdays, then add them in. */ 103 1.1.10.2 msaitoh /* The loop is slow, FIXME, but simple and accurate. */ 104 1.1.10.2 msaitoh result += (tim.tm_year - 70) * (SECS_PER_DAY*365); /*%< Years */ 105 1.1.10.2 msaitoh for (i = 70; i < tim.tm_year; i++) 106 1.1.10.2 msaitoh if (isleap(1900+i)) 107 1.1.10.2 msaitoh result += SECS_PER_DAY; /*%< Add leapday for prev year */ 108 1.1.10.2 msaitoh return (result); 109 1.1.10.2 msaitoh } 110 1.1.10.2 msaitoh 111 1.1.10.2 msaitoh /* Private. */ 112 1.1.10.2 msaitoh 113 1.1.10.2 msaitoh /*% 114 1.1.10.2 msaitoh * Parse part of a date. Set error flag if any error. 115 1.1.10.2 msaitoh * Don't reset the flag if there is no error. 116 1.1.10.2 msaitoh */ 117 1.1.10.2 msaitoh static int 118 1.1.10.2 msaitoh datepart(const char *buf, int size, int min, int max, int *errp) { 119 1.1.10.2 msaitoh int result = 0; 120 1.1.10.2 msaitoh int i; 121 1.1.10.2 msaitoh 122 1.1.10.2 msaitoh for (i = 0; i < size; i++) { 123 1.1.10.2 msaitoh if (!isdigit((unsigned char)(buf[i]))) 124 1.1.10.2 msaitoh *errp = 1; 125 1.1.10.2 msaitoh result = (result * 10) + buf[i] - '0'; 126 1.1.10.2 msaitoh } 127 1.1.10.2 msaitoh if (result < min) 128 1.1.10.2 msaitoh *errp = 1; 129 1.1.10.2 msaitoh if (result > max) 130 1.1.10.2 msaitoh *errp = 1; 131 1.1.10.2 msaitoh return (result); 132 1.1.10.2 msaitoh } 133 1.1.10.2 msaitoh 134 1.1.10.2 msaitoh /*! \file */ 135
Indexes created Tue Sep 30 20:09:53 GMT 2025