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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* This program tests the date_parse_http routine in ../main/util_date.c.
*
* It is only semiautomated in that I would run it, modify the code to
* use a different algorithm or seed, recompile and run again, etc.
* Obviously it should use an argument for that, but I never got around
* to changing the implementation.
*
* gcc -g -O2 -I../main -o test_date ../main/util_date.o test_date.c
* test_date | egrep '^No '
*
* Roy Fielding, 1996
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "apr_date.h"
#ifndef srand48
#define srand48 srandom
#endif
#ifndef mrand48
#define mrand48 random
#endif
void gm_timestr_822(char *ts, apr_time_t sec);
void gm_timestr_850(char *ts, apr_time_t sec);
void gm_timestr_ccc(char *ts, apr_time_t sec);
static const apr_time_t year2secs[] = {
0LL, /* 1970 */
31536000LL, /* 1971 */
63072000LL, /* 1972 */
94694400LL, /* 1973 */
126230400LL, /* 1974 */
157766400LL, /* 1975 */
189302400LL, /* 1976 */
220924800LL, /* 1977 */
252460800LL, /* 1978 */
283996800LL, /* 1979 */
315532800LL, /* 1980 */
347155200LL, /* 1981 */
378691200LL, /* 1982 */
410227200LL, /* 1983 */
441763200LL, /* 1984 */
473385600LL, /* 1985 */
504921600LL, /* 1986 */
536457600LL, /* 1987 */
567993600LL, /* 1988 */
599616000LL, /* 1989 */
631152000LL, /* 1990 */
662688000LL, /* 1991 */
694224000LL, /* 1992 */
725846400LL, /* 1993 */
757382400LL, /* 1994 */
788918400LL, /* 1995 */
820454400LL, /* 1996 */
852076800LL, /* 1997 */
883612800LL, /* 1998 */
915148800LL, /* 1999 */
946684800LL, /* 2000 */
978307200LL, /* 2001 */
1009843200LL, /* 2002 */
1041379200LL, /* 2003 */
1072915200LL, /* 2004 */
1104537600LL, /* 2005 */
1136073600LL, /* 2006 */
1167609600LL, /* 2007 */
1199145600LL, /* 2008 */
1230768000LL, /* 2009 */
1262304000LL, /* 2010 */
1293840000LL, /* 2011 */
1325376000LL, /* 2012 */
1356998400LL, /* 2013 */
1388534400LL, /* 2014 */
1420070400LL, /* 2015 */
1451606400LL, /* 2016 */
1483228800LL, /* 2017 */
1514764800LL, /* 2018 */
1546300800LL, /* 2019 */
1577836800LL, /* 2020 */
1609459200LL, /* 2021 */
1640995200LL, /* 2022 */
1672531200LL, /* 2023 */
1704067200LL, /* 2024 */
1735689600LL, /* 2025 */
1767225600LL, /* 2026 */
1798761600LL, /* 2027 */
1830297600LL, /* 2028 */
1861920000LL, /* 2029 */
1893456000LL, /* 2030 */
1924992000LL, /* 2031 */
1956528000LL, /* 2032 */
1988150400LL, /* 2033 */
2019686400LL, /* 2034 */
2051222400LL, /* 2035 */
2082758400LL, /* 2036 */
2114380800LL, /* 2037 */
2145916800LL /* 2038 */
};
const char month_snames[12][4] = {
"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
};
void gm_timestr_822(char *ts, apr_time_t sec)
{
static const char *const days[7]=
{"Sun","Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
struct tm *tms;
time_t ls = (time_t)sec;
tms = gmtime(&ls);
sprintf(ts, "%s, %.2d %s %d %.2d:%.2d:%.2d GMT", days[tms->tm_wday],
tms->tm_mday, month_snames[tms->tm_mon], tms->tm_year + 1900,
tms->tm_hour, tms->tm_min, tms->tm_sec);
}
void gm_timestr_850(char *ts, apr_time_t sec)
{
static const char *const days[7]=
{"Sunday","Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
"Saturday"};
struct tm *tms;
int year;
time_t ls = (time_t)sec;
tms = gmtime(&ls);
year = tms->tm_year;
if (year >= 100) year -= 100;
sprintf(ts, "%s, %.2d-%s-%.2d %.2d:%.2d:%.2d GMT", days[tms->tm_wday],
tms->tm_mday, month_snames[tms->tm_mon], year,
tms->tm_hour, tms->tm_min, tms->tm_sec);
}
void gm_timestr_ccc(char *ts, apr_time_t sec)
{
static const char *const days[7]=
{"Sun","Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
struct tm *tms;
time_t ls = (time_t)sec;
tms = gmtime(&ls);
sprintf(ts, "%s %s %2d %.2d:%.2d:%.2d %d", days[tms->tm_wday],
month_snames[tms->tm_mon], tms->tm_mday,
tms->tm_hour, tms->tm_min, tms->tm_sec, tms->tm_year + 1900);
}
int main (void)
{
int year, i;
apr_time_t guess;
apr_time_t offset = 0;
/* apr_time_t offset = 0; */
/* apr_time_t offset = ((31 + 28) * 24 * 3600) - 1; */
apr_time_t secstodate, newsecs;
char datestr[50];
for (year = 1970; year < 2038; ++year) {
secstodate = year2secs[year - 1970] + offset;
gm_timestr_822(datestr, secstodate);
secstodate *= APR_USEC_PER_SEC;
newsecs = apr_date_parse_http(datestr);
if (secstodate == newsecs)
printf("Yes %4d %19" APR_TIME_T_FMT " %s\n", year, secstodate, datestr);
else if (newsecs == APR_DATE_BAD)
printf("No %4d %19" APR_TIME_T_FMT " %19" APR_TIME_T_FMT " %s\n",
year, secstodate, newsecs, datestr);
else
printf("No* %4d %19" APR_TIME_T_FMT " %19" APR_TIME_T_FMT " %s\n",
year, secstodate, newsecs, datestr);
}
srand48(978245L);
for (i = 0; i < 10000; ++i) {
guess = (time_t)mrand48();
if (guess < 0) guess *= -1;
secstodate = guess + offset;
gm_timestr_822(datestr, secstodate);
secstodate *= APR_USEC_PER_SEC;
newsecs = apr_date_parse_http(datestr);
if (secstodate == newsecs)
printf("Yes %" APR_TIME_T_FMT " %s\n", secstodate, datestr);
else if (newsecs == APR_DATE_BAD)
printf("No %" APR_TIME_T_FMT " %" APR_TIME_T_FMT " %s\n",
secstodate, newsecs, datestr);
else
printf("No* %" APR_TIME_T_FMT " %" APR_TIME_T_FMT " %s\n",
secstodate, newsecs, datestr);
}
exit(0);
}
|
