1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* Import. */
#include <arpa/nameser.h>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x)
#else
# define SPRINTF(x) ((size_t)sprintf x)
#endif
/* Forward. */
static int fmt1(int t, char s, char **buf, size_t *buflen);
/* Macros. */
#define T(x) if ((x) < 0) return (-1); else (void)NULL
/* Public. */
int
ns_format_ttl(u_long src, char *dst, size_t dstlen) {
char *odst = dst;
int secs, mins, hours, days, weeks, x;
char *p;
secs = src % 60; src /= 60;
mins = src % 60; src /= 60;
hours = src % 24; src /= 24;
days = src % 7; src /= 7;
weeks = src; src = 0;
x = 0;
if (weeks) {
T(fmt1(weeks, 'W', &dst, &dstlen));
x++;
}
if (days) {
T(fmt1(days, 'D', &dst, &dstlen));
x++;
}
if (hours) {
T(fmt1(hours, 'H', &dst, &dstlen));
x++;
}
if (mins) {
T(fmt1(mins, 'M', &dst, &dstlen));
x++;
}
if (secs || !(weeks || days || hours || mins)) {
T(fmt1(secs, 'S', &dst, &dstlen));
x++;
}
if (x > 1) {
int ch;
for (p = odst; (ch = *p) != '\0'; p++)
if (isascii(ch) && isupper(ch))
*p = tolower(ch);
}
return (dst - odst);
}
libresolv_hidden_def (ns_format_ttl)
// Seems not to be needed. It's not exported from the DSO. Some libresolv.a
// might depend on it so we let it in.
int
ns_parse_ttl(const char *src, u_long *dst) {
u_long ttl, tmp;
int ch, digits, dirty;
ttl = 0;
tmp = 0;
digits = 0;
dirty = 0;
while ((ch = *src++) != '\0') {
if (!isascii(ch) || !isprint(ch))
goto einval;
if (isdigit(ch)) {
tmp *= 10;
tmp += (ch - '0');
digits++;
continue;
}
if (digits == 0)
goto einval;
if (islower(ch))
ch = toupper(ch);
switch (ch) {
case 'W': tmp *= 7;
case 'D': tmp *= 24;
case 'H': tmp *= 60;
case 'M': tmp *= 60;
case 'S': break;
default: goto einval;
}
ttl += tmp;
tmp = 0;
digits = 0;
dirty = 1;
}
if (digits > 0) {
if (dirty)
goto einval;
else
ttl += tmp;
} else if (!dirty)
goto einval;
*dst = ttl;
return (0);
einval:
__set_errno (EINVAL);
return (-1);
}
/* Private. */
static int
fmt1(int t, char s, char **buf, size_t *buflen) {
char tmp[50];
size_t len;
len = SPRINTF((tmp, "%d%c", t, s));
if (len + 1 > *buflen)
return (-1);
strcpy(*buf, tmp);
*buf += len;
*buflen -= len;
return (0);
}
/*! \file */
|
GitWeb