michael@0: /*	$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $	*/
michael@0: 
michael@0: /*
michael@0:  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
michael@0:  * Copyright (c) 1996,1999 by Internet Software Consortium.
michael@0:  *
michael@0:  * Permission to use, copy, modify, and distribute this software for any
michael@0:  * purpose with or without fee is hereby granted, provided that the above
michael@0:  * copyright notice and this permission notice appear in all copies.
michael@0:  *
michael@0:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
michael@0:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
michael@0:  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
michael@0:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
michael@0:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
michael@0:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
michael@0:  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  * This version of this file is derived from Android 2.3 "Gingerbread",
michael@0:  * which contains uncredited changes by Android/Google developers.  It has
michael@0:  * been modified in 2011 for use in the Android build of Mozilla Firefox by
michael@0:  * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>,
michael@0:  * and Steve Workman <sjhworkman@gmail.com>).
michael@0:  * These changes are offered under the same license as the original NetBSD
michael@0:  * file, whose copyright and license are unchanged above.
michael@0:  */
michael@0: 
michael@0: #define ANDROID_CHANGES 1
michael@0: #define MOZILLA_NECKO_EXCLUDE_CODE 1
michael@0: 
michael@0: #include <sys/cdefs.h>
michael@0: #ifndef lint
michael@0: #ifdef notdef
michael@0: static const char rcsid[] = "Id: ns_ttl.c,v 1.1.206.1 2004/03/09 08:33:45 marka Exp";
michael@0: #else
michael@0: __RCSID("$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $");
michael@0: #endif
michael@0: #endif
michael@0: 
michael@0: /* Import. */
michael@0: 
michael@0: #include "arpa_nameser.h"
michael@0: 
michael@0: #include <ctype.h>
michael@0: #include <errno.h>
michael@0: #include <stdio.h>
michael@0: #include <string.h>
michael@0: 
michael@0: #ifdef SPRINTF_CHAR
michael@0: # define SPRINTF(x) strlen(sprintf/**/x)
michael@0: #else
michael@0: # define SPRINTF(x) ((size_t)sprintf x)
michael@0: #endif
michael@0: 
michael@0: /* Forward. */
michael@0: 
michael@0: static int	fmt1(int t, char s, char **buf, size_t *buflen);
michael@0: 
michael@0: /* Macros. */
michael@0: 
michael@0: #define T(x) do { if ((x) < 0) return (-1); } while(0)
michael@0: 
michael@0: /* Public. */
michael@0: 
michael@0: int
michael@0: ns_format_ttl(u_long src, char *dst, size_t dstlen) {
michael@0: 	char *odst = dst;
michael@0: 	int secs, mins, hours, days, weeks, x;
michael@0: 	char *p;
michael@0: 
michael@0: 	secs = src % 60;   src /= 60;
michael@0: 	mins = src % 60;   src /= 60;
michael@0: 	hours = src % 24;  src /= 24;
michael@0: 	days = src % 7;    src /= 7;
michael@0: 	weeks = src;       src = 0;
michael@0: 
michael@0: 	x = 0;
michael@0: 	if (weeks) {
michael@0: 		T(fmt1(weeks, 'W', &dst, &dstlen));
michael@0: 		x++;
michael@0: 	}
michael@0: 	if (days) {
michael@0: 		T(fmt1(days, 'D', &dst, &dstlen));
michael@0: 		x++;
michael@0: 	}
michael@0: 	if (hours) {
michael@0: 		T(fmt1(hours, 'H', &dst, &dstlen));
michael@0: 		x++;
michael@0: 	}
michael@0: 	if (mins) {
michael@0: 		T(fmt1(mins, 'M', &dst, &dstlen));
michael@0: 		x++;
michael@0: 	}
michael@0: 	if (secs || !(weeks || days || hours || mins)) {
michael@0: 		T(fmt1(secs, 'S', &dst, &dstlen));
michael@0: 		x++;
michael@0: 	}
michael@0: 
michael@0: 	if (x > 1) {
michael@0: 		int ch;
michael@0: 
michael@0: 		for (p = odst; (ch = *p) != '\0'; p++)
michael@0: 			if (isascii(ch) && isupper(ch))
michael@0: 				*p = tolower(ch);
michael@0: 	}
michael@0: 
michael@0: 	return (dst - odst);
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_NECKO_EXCLUDE_CODE
michael@0: #ifndef _LIBC
michael@0: int
michael@0: ns_parse_ttl(const char *src, u_long *dst) {
michael@0: 	u_long ttl, tmp;
michael@0: 	int ch, digits, dirty;
michael@0: 
michael@0: 	ttl = 0;
michael@0: 	tmp = 0;
michael@0: 	digits = 0;
michael@0: 	dirty = 0;
michael@0: 	while ((ch = *src++) != '\0') {
michael@0: 		if (!isascii(ch) || !isprint(ch))
michael@0: 			goto einval;
michael@0: 		if (isdigit(ch)) {
michael@0: 			tmp *= 10;
michael@0: 			tmp += (ch - '0');
michael@0: 			digits++;
michael@0: 			continue;
michael@0: 		}
michael@0: 		if (digits == 0)
michael@0: 			goto einval;
michael@0: 		if (islower(ch))
michael@0: 			ch = toupper(ch);
michael@0: 		switch (ch) {
michael@0: 		case 'W':  tmp *= 7;	/*FALLTHROUGH*/
michael@0: 		case 'D':  tmp *= 24;	/*FALLTHROUGH*/
michael@0: 		case 'H':  tmp *= 60;	/*FALLTHROUGH*/
michael@0: 		case 'M':  tmp *= 60;	/*FALLTHROUGH*/
michael@0: 		case 'S':  break;
michael@0: 		default:   goto einval;
michael@0: 		}
michael@0: 		ttl += tmp;
michael@0: 		tmp = 0;
michael@0: 		digits = 0;
michael@0: 		dirty = 1;
michael@0: 	}
michael@0: 	if (digits > 0) {
michael@0: 		if (dirty)
michael@0: 			goto einval;
michael@0: 		else
michael@0: 			ttl += tmp;
michael@0: 	}
michael@0: 	*dst = ttl;
michael@0: 	return (0);
michael@0: 
michael@0:  einval:
michael@0: 	errno = EINVAL;
michael@0: 	return (-1);
michael@0: }
michael@0: #endif
michael@0: #endif
michael@0: 
michael@0: /* Private. */
michael@0: 
michael@0: static int
michael@0: fmt1(int t, char s, char **buf, size_t *buflen) {
michael@0: 	char tmp[50];
michael@0: 	size_t len;
michael@0: 
michael@0: 	len = SPRINTF((tmp, "%d%c", t, s));
michael@0: 	if (len + 1 > *buflen)
michael@0: 		return (-1);
michael@0: 	strcpy(*buf, tmp);
michael@0: 	*buf += len;
michael@0: 	*buflen -= len;
michael@0: 	return (0);
michael@0: }