2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1996,1999 by Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 static const char rcsid[] = "$Id: ns_ttl.c,v 1.4 2005/07/28 06:51:49 marka Exp $";
24 #include "port_before.h"
26 #include <arpa/nameser.h>
33 #include "port_after.h"
36 # define SPRINTF(x) strlen(sprintf/**/x)
38 # define SPRINTF(x) ((size_t)sprintf x)
43 static int fmt1(int t, char s, char **buf, size_t *buflen);
47 #define T(x) if ((x) < 0) return (-1); else (void)NULL
52 ns_format_ttl(u_long src, char *dst, size_t dstlen) {
54 int secs, mins, hours, days, weeks, x;
57 secs = src % 60; src /= 60;
58 mins = src % 60; src /= 60;
59 hours = src % 24; src /= 24;
60 days = src % 7; src /= 7;
65 T(fmt1(weeks, 'W', &dst, &dstlen));
69 T(fmt1(days, 'D', &dst, &dstlen));
73 T(fmt1(hours, 'H', &dst, &dstlen));
77 T(fmt1(mins, 'M', &dst, &dstlen));
80 if (secs || !(weeks || days || hours || mins)) {
81 T(fmt1(secs, 'S', &dst, &dstlen));
88 for (p = odst; (ch = *p) != '\0'; p++)
89 if (isascii(ch) && isupper(ch))
97 ns_parse_ttl(const char *src, u_long *dst) {
99 int ch, digits, dirty;
105 while ((ch = *src++) != '\0') {
106 if (!isascii(ch) || !isprint(ch))
124 default: goto einval;
149 fmt1(int t, char s, char **buf, size_t *buflen) {
153 len = SPRINTF((tmp, "%d%c", t, s));
154 if (len + 1 > *buflen)