1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (c) 1997-2000 by Sun Microsystems, Inc. 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate /* 7*0Sstevel@tonic-gate * Copyright (c) 1996,1999 by Internet Software Consortium. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * Permission to use, copy, modify, and distribute this software for any 10*0Sstevel@tonic-gate * purpose with or without fee is hereby granted, provided that the above 11*0Sstevel@tonic-gate * copyright notice and this permission notice appear in all copies. 12*0Sstevel@tonic-gate * 13*0Sstevel@tonic-gate * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 14*0Sstevel@tonic-gate * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 15*0Sstevel@tonic-gate * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 16*0Sstevel@tonic-gate * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 17*0Sstevel@tonic-gate * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 18*0Sstevel@tonic-gate * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 19*0Sstevel@tonic-gate * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 20*0Sstevel@tonic-gate * SOFTWARE. 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate 23*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate #ifndef lint 26*0Sstevel@tonic-gate static const char rcsid[] = "$Id: ns_ttl.c,v 8.8 1999/10/13 16:39:36 vixie Exp $"; 27*0Sstevel@tonic-gate #endif 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Import. */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #include "port_before.h" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <arpa/nameser.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #include <ctype.h> 36*0Sstevel@tonic-gate #include <errno.h> 37*0Sstevel@tonic-gate #include <stdio.h> 38*0Sstevel@tonic-gate #include <string.h> 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #include "port_after.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #ifdef SPRINTF_CHAR 43*0Sstevel@tonic-gate # define SPRINTF(x) strlen(sprintf/**/x) 44*0Sstevel@tonic-gate #else 45*0Sstevel@tonic-gate # define SPRINTF(x) ((size_t)sprintf x) 46*0Sstevel@tonic-gate #endif 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate /* Forward. */ 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate static int fmt1(int t, char s, char **buf, size_t *buflen); 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate /* Macros. */ 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate #define T(x) if ((x) < 0) return (-1); else (void)NULL 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* Public. */ 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate ns_format_ttl(u_long src, char *dst, size_t dstlen) { 60*0Sstevel@tonic-gate char *odst = dst; 61*0Sstevel@tonic-gate int secs, mins, hours, days, weeks, x; 62*0Sstevel@tonic-gate char *p; 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate secs = src % 60; src /= 60; 65*0Sstevel@tonic-gate mins = src % 60; src /= 60; 66*0Sstevel@tonic-gate hours = src % 24; src /= 24; 67*0Sstevel@tonic-gate days = src % 7; src /= 7; 68*0Sstevel@tonic-gate weeks = src; src = 0; 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate x = 0; 71*0Sstevel@tonic-gate if (weeks) { 72*0Sstevel@tonic-gate T(fmt1(weeks, 'W', &dst, &dstlen)); 73*0Sstevel@tonic-gate x++; 74*0Sstevel@tonic-gate } 75*0Sstevel@tonic-gate if (days) { 76*0Sstevel@tonic-gate T(fmt1(days, 'D', &dst, &dstlen)); 77*0Sstevel@tonic-gate x++; 78*0Sstevel@tonic-gate } 79*0Sstevel@tonic-gate if (hours) { 80*0Sstevel@tonic-gate T(fmt1(hours, 'H', &dst, &dstlen)); 81*0Sstevel@tonic-gate x++; 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate if (mins) { 84*0Sstevel@tonic-gate T(fmt1(mins, 'M', &dst, &dstlen)); 85*0Sstevel@tonic-gate x++; 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate if (secs || !(weeks || days || hours || mins)) { 88*0Sstevel@tonic-gate T(fmt1(secs, 'S', &dst, &dstlen)); 89*0Sstevel@tonic-gate x++; 90*0Sstevel@tonic-gate } 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate if (x > 1) { 93*0Sstevel@tonic-gate int ch; 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate for (p = odst; (ch = *p) != '\0'; p++) 96*0Sstevel@tonic-gate if (isascii(ch) && isupper(ch)) 97*0Sstevel@tonic-gate *p = tolower(ch); 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate return (dst - odst); 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate int 104*0Sstevel@tonic-gate ns_parse_ttl(const char *src, u_long *dst) { 105*0Sstevel@tonic-gate u_long ttl, tmp; 106*0Sstevel@tonic-gate int ch, digits, dirty; 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate ttl = 0; 109*0Sstevel@tonic-gate tmp = 0; 110*0Sstevel@tonic-gate digits = 0; 111*0Sstevel@tonic-gate dirty = 0; 112*0Sstevel@tonic-gate while ((ch = *src++) != '\0') { 113*0Sstevel@tonic-gate if (!isascii(ch) || !isprint(ch)) 114*0Sstevel@tonic-gate goto einval; 115*0Sstevel@tonic-gate if (isdigit(ch)) { 116*0Sstevel@tonic-gate tmp *= 10; 117*0Sstevel@tonic-gate tmp += (ch - '0'); 118*0Sstevel@tonic-gate digits++; 119*0Sstevel@tonic-gate continue; 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate if (digits == 0) 122*0Sstevel@tonic-gate goto einval; 123*0Sstevel@tonic-gate if (islower(ch)) 124*0Sstevel@tonic-gate ch = toupper(ch); 125*0Sstevel@tonic-gate switch (ch) { 126*0Sstevel@tonic-gate case 'W': tmp *= 7; 127*0Sstevel@tonic-gate case 'D': tmp *= 24; 128*0Sstevel@tonic-gate case 'H': tmp *= 60; 129*0Sstevel@tonic-gate case 'M': tmp *= 60; 130*0Sstevel@tonic-gate case 'S': break; 131*0Sstevel@tonic-gate default: goto einval; 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate ttl += tmp; 134*0Sstevel@tonic-gate tmp = 0; 135*0Sstevel@tonic-gate digits = 0; 136*0Sstevel@tonic-gate dirty = 1; 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate if (digits > 0) { 139*0Sstevel@tonic-gate if (dirty) 140*0Sstevel@tonic-gate goto einval; 141*0Sstevel@tonic-gate else 142*0Sstevel@tonic-gate ttl += tmp; 143*0Sstevel@tonic-gate } 144*0Sstevel@tonic-gate *dst = ttl; 145*0Sstevel@tonic-gate return (0); 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate einval: 148*0Sstevel@tonic-gate errno = EINVAL; 149*0Sstevel@tonic-gate return (-1); 150*0Sstevel@tonic-gate } 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate /* Private. */ 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate static int 155*0Sstevel@tonic-gate fmt1(int t, char s, char **buf, size_t *buflen) { 156*0Sstevel@tonic-gate char tmp[50]; 157*0Sstevel@tonic-gate size_t len; 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate len = SPRINTF((tmp, "%d%c", t, s)); 160*0Sstevel@tonic-gate if (len + 1 > *buflen) 161*0Sstevel@tonic-gate return (-1); 162*0Sstevel@tonic-gate strcpy(*buf, tmp); 163*0Sstevel@tonic-gate *buf += len; 164*0Sstevel@tonic-gate *buflen -= len; 165*0Sstevel@tonic-gate return (0); 166*0Sstevel@tonic-gate } 167