2 * Copyright (c) 1996,1999 by Internet Software Consortium.
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
9 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
10 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
11 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
12 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
13 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
14 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
18 #if !defined(_LIBC) && !defined(lint)
19 static const char rcsid[] = "$BINDId: ns_ttl.c,v 8.8 1999/10/13 16:39:36 vixie Exp $";
24 #include <arpa/nameser.h>
32 # define SPRINTF(x) strlen(sprintf/**/x)
34 # define SPRINTF(x) ((size_t)sprintf x)
39 static int fmt1(int t, char s, char **buf, size_t *buflen);
43 #define T(x) if ((x) < 0) return (-1); else (void)NULL
48 ns_format_ttl(u_long src, char *dst, size_t dstlen) {
50 int secs, mins, hours, days, weeks, x;
53 secs = src % 60; src /= 60;
54 mins = src % 60; src /= 60;
55 hours = src % 24; src /= 24;
56 days = src % 7; src /= 7;
61 T(fmt1(weeks, 'W', &dst, &dstlen));
65 T(fmt1(days, 'D', &dst, &dstlen));
69 T(fmt1(hours, 'H', &dst, &dstlen));
73 T(fmt1(mins, 'M', &dst, &dstlen));
76 if (secs || !(weeks || days || hours || mins)) {
77 T(fmt1(secs, 'S', &dst, &dstlen));
84 for (p = odst; (ch = *p) != '\0'; p++)
85 if (isascii(ch) && isupper(ch))
93 // Seems not to be needed. It's not exported from the DSO. Some libresolv.a
94 // might depend on it so we let it in.
96 ns_parse_ttl(const char *src, u_long *dst) {
98 int ch, digits, dirty;
104 while ((ch = *src++) != '\0') {
105 if (!isascii(ch) || !isprint(ch))
123 default: goto einval;
140 __set_errno (EINVAL);
148 fmt1(int t, char s, char **buf, size_t *buflen) {
152 len = SPRINTF((tmp, "%d%c", t, s));
153 if (len + 1 > *buflen)