1 | /* Copyright (C) 1998-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <time.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <string.h> |
22 | #include <stdint.h> |
23 | #include <unistd.h> |
24 | |
25 | int failed = 0; |
26 | |
27 | struct test_times |
28 | { |
29 | const char *name; |
30 | int daylight; |
31 | int timezone; |
32 | const char *tzname[2]; |
33 | }; |
34 | |
35 | static const struct test_times tests[] = |
36 | { |
37 | { "Europe/Amsterdam" , 1, -3600, { "CET" , "CEST" }}, |
38 | { "Europe/Berlin" , 1, -3600, { "CET" , "CEST" }}, |
39 | { "Europe/London" , 1, 0, { "GMT" , "BST" }}, |
40 | { "Universal" , 0, 0, {"UTC" , "UTC" }}, |
41 | { "Australia/Melbourne" , 1, -36000, { "EST" , "EST" }}, |
42 | { "America/Sao_Paulo" , 1, 10800, {"BRT" , "BRST" }}, |
43 | { "America/Chicago" , 1, 21600, {"CST" , "CDT" }}, |
44 | { "America/Indiana/Indianapolis" , 1, 18000, {"EST" , "EDT" }}, |
45 | { "America/Los_Angeles" , 1, 28800, {"PST" , "PDT" }}, |
46 | { "Pacific/Auckland" , 1, -43200, { "NZST" , "NZDT" }}, |
47 | { NULL, 0, 0 } |
48 | }; |
49 | |
50 | /* This string will be used for `putenv' calls. */ |
51 | char envstring[100]; |
52 | |
53 | static void |
54 | print_tzvars (void) |
55 | { |
56 | printf (format: "tzname[0]: %s\n" , tzname[0]); |
57 | printf (format: "tzname[1]: %s\n" , tzname[1]); |
58 | printf (format: "daylight: %d\n" , daylight); |
59 | printf (format: "timezone: %ld\n" , timezone); |
60 | } |
61 | |
62 | |
63 | static void |
64 | check_tzvars (const char *name, int dayl, int timez, const char *const tznam[]) |
65 | { |
66 | int i; |
67 | |
68 | if (daylight != dayl) |
69 | { |
70 | printf (format: "*** Timezone: %s, daylight is: %d but should be: %d\n" , |
71 | name, daylight, dayl); |
72 | ++failed; |
73 | } |
74 | if (timezone != timez) |
75 | { |
76 | printf (format: "*** Timezone: %s, timezone is: %ld but should be: %d\n" , |
77 | name, timezone, timez); |
78 | ++failed; |
79 | } |
80 | for (i = 0; i <= 1; ++i) |
81 | if (strcmp (s1: tzname[i], s2: tznam[i]) != 0) |
82 | { |
83 | printf (format: "*** Timezone: %s, tzname[%d] is: %s but should be: %s\n" , |
84 | name, i, tzname[i], tznam[i]); |
85 | ++failed; |
86 | } |
87 | } |
88 | |
89 | |
90 | static int |
91 | do_test (void) |
92 | { |
93 | time_t t; |
94 | const struct test_times *pt; |
95 | char buf[BUFSIZ]; |
96 | |
97 | /* This should be: Fri May 15 01:02:16 1998 (UTC). */ |
98 | t = 895194136; |
99 | printf (format: "We use this date: %s\n" , asctime (tp: gmtime (timer: &t))); |
100 | |
101 | for (pt = tests; pt->name != NULL; ++pt) |
102 | { |
103 | /* Start with a known state */ |
104 | printf (format: "Checking timezone %s\n" , pt->name); |
105 | sprintf (s: buf, format: "TZ=%s" , pt->name); |
106 | if (putenv (string: buf)) |
107 | { |
108 | puts (s: "putenv failed." ); |
109 | failed = 1; |
110 | } |
111 | tzset (); |
112 | print_tzvars (); |
113 | check_tzvars (name: pt->name, dayl: pt->daylight, timez: pt->timezone, tznam: pt->tzname); |
114 | |
115 | /* calling localtime shouldn't make a difference */ |
116 | localtime (timer: &t); |
117 | print_tzvars (); |
118 | check_tzvars (name: pt->name, dayl: pt->daylight, timez: pt->timezone, tznam: pt->tzname); |
119 | } |
120 | |
121 | /* From a post of Scott Harrington <seh4@ix.netcom.com> to the timezone |
122 | mailing list. */ |
123 | { |
124 | struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1}; |
125 | char buf[200]; |
126 | strcpy (dest: envstring, src: "TZ=Europe/London" ); |
127 | putenv (string: envstring); |
128 | t = mktime (tp: &tmBuf); |
129 | snprintf (s: buf, maxlen: sizeof (buf), format: "TZ=%s %jd %d %d %d %d %d %d %d %d %d" , |
130 | getenv (name: "TZ" ), (intmax_t) t, |
131 | tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour, |
132 | tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year, |
133 | tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst); |
134 | fputs (s: buf, stdout); |
135 | puts (s: " should be" ); |
136 | puts (s: "TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1" ); |
137 | if (strcmp (s1: buf, s2: "TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1" ) != 0) |
138 | { |
139 | failed = 1; |
140 | fputs (s: " FAILED ***" , stdout); |
141 | } |
142 | } |
143 | |
144 | printf(format: "\n" ); |
145 | |
146 | { |
147 | struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1}; |
148 | char buf[200]; |
149 | strcpy (dest: envstring, src: "TZ=GMT" ); |
150 | /* No putenv call needed! */ |
151 | t = mktime (tp: &tmBuf); |
152 | snprintf (s: buf, maxlen: sizeof (buf), format: "TZ=%s %jd %d %d %d %d %d %d %d %d %d" , |
153 | getenv (name: "TZ" ), (intmax_t) t, |
154 | tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour, |
155 | tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year, |
156 | tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst); |
157 | fputs (s: buf, stdout); |
158 | puts (s: " should be" ); |
159 | puts (s: "TZ=GMT 892166400 0 0 0 10 3 98 5 99 0" ); |
160 | if (strcmp (s1: buf, s2: "TZ=GMT 892166400 0 0 0 10 3 98 5 99 0" ) != 0) |
161 | { |
162 | failed = 1; |
163 | fputs (s: " FAILED ***" , stdout); |
164 | } |
165 | } |
166 | |
167 | return failed ? EXIT_FAILURE : EXIT_SUCCESS; |
168 | } |
169 | |
170 | #define TEST_FUNCTION do_test () |
171 | #include "../test-skeleton.c" |
172 | |