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// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
#include "prelude.h"
#include "bfs.h"
#include "bfstd.h"
#include "diag.h"
#include "tests.h"
#include "xtime.h"
#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include <time.h>
static bool tm_equal(const struct tm *tma, const struct tm *tmb) {
return tma->tm_year == tmb->tm_year
&& tma->tm_mon == tmb->tm_mon
&& tma->tm_mday == tmb->tm_mday
&& tma->tm_hour == tmb->tm_hour
&& tma->tm_min == tmb->tm_min
&& tma->tm_sec == tmb->tm_sec
&& tma->tm_wday == tmb->tm_wday
&& tma->tm_yday == tmb->tm_yday
&& tma->tm_isdst == tmb->tm_isdst;
}
/** Check one xgetdate() result. */
static bool check_one_xgetdate(const char *str, int error, time_t expected) {
struct timespec ts;
int ret = xgetdate(str, &ts);
if (error) {
return bfs_echeck(ret == -1 && errno == error, "xgetdate('%s')", str);
} else {
return bfs_echeck(ret == 0, "xgetdate('%s')", str)
&& bfs_check(ts.tv_sec == expected && ts.tv_nsec == 0,
"xgetdate('%s'): %jd.%09jd != %jd",
str, (intmax_t)ts.tv_sec, (intmax_t)ts.tv_nsec, (intmax_t)expected);
}
}
/** xgetdate() tests. */
static void check_xgetdate(void) {
check_one_xgetdate("", EINVAL, 0);
check_one_xgetdate("????", EINVAL, 0);
check_one_xgetdate("1991", EINVAL, 0);
check_one_xgetdate("1991-??", EINVAL, 0);
check_one_xgetdate("1991-12", EINVAL, 0);
check_one_xgetdate("1991-12-", EINVAL, 0);
check_one_xgetdate("1991-12-??", EINVAL, 0);
check_one_xgetdate("1991-12-14", 0, 692668800);
check_one_xgetdate("1991-12-14-", EINVAL, 0);
check_one_xgetdate("1991-12-14T", EINVAL, 0);
check_one_xgetdate("1991-12-14T??", EINVAL, 0);
check_one_xgetdate("1991-12-14T10", 0, 692704800);
check_one_xgetdate("1991-12-14T10:??", EINVAL, 0);
check_one_xgetdate("1991-12-14T10:11", 0, 692705460);
check_one_xgetdate("1991-12-14T10:11:??", EINVAL, 0);
check_one_xgetdate("1991-12-14T10:11:12", 0, 692705472);
check_one_xgetdate("1991-12-14T10Z", 0, 692704800);
check_one_xgetdate("1991-12-14T10:11Z", 0, 692705460);
check_one_xgetdate("1991-12-14T10:11:12Z", 0, 692705472);
check_one_xgetdate("1991-12-14T10:11:12?", EINVAL, 0);
check_one_xgetdate("1991-12-14T03-07", 0, 692704800);
check_one_xgetdate("1991-12-14T06:41-03:30", 0, 692705460);
check_one_xgetdate("1991-12-14T03:11:12-07:00", 0, 692705472);
check_one_xgetdate("19911214 031112-0700", 0, 692705472);;
}
#define TM_FORMAT "%04d-%02d-%02d %02d:%02d:%02d (%d/7, %d/365%s)"
#define TM_PRINTF(tm) \
(1900 + (tm).tm_year), (tm).tm_mon, (tm).tm_mday, \
(tm).tm_hour, (tm).tm_min, (tm).tm_sec, \
((tm).tm_wday + 1), ((tm).tm_yday + 1), \
((tm).tm_isdst ? ((tm).tm_isdst < 0 ? ", DST?" : ", DST") : "")
/** Check one xmktime() result. */
static bool check_one_xmktime(time_t expected) {
struct tm tm;
if (!localtime_r(&expected, &tm)) {
bfs_ediag("localtime_r(%jd)", (intmax_t)expected);
return false;
}
time_t actual;
return bfs_echeck(xmktime(&tm, &actual) == 0, "xmktime(" TM_FORMAT ")", TM_PRINTF(tm))
&& bfs_check(actual == expected, "xmktime(" TM_FORMAT "): %jd != %jd", TM_PRINTF(tm), (intmax_t)actual, (intmax_t)expected);
}
/** xmktime() tests. */
static void check_xmktime(void) {
for (time_t time = -10; time <= 10; ++time) {
check_one_xmktime(time);
}
// Attempt to trigger overflow (but don't test for it, since it's not mandatory)
struct tm tm = {
.tm_year = INT_MAX,
.tm_mon = INT_MAX,
.tm_mday = INT_MAX,
.tm_hour = INT_MAX,
.tm_min = INT_MAX,
.tm_sec = INT_MAX,
.tm_isdst = -1,
};
time_t time;
xmktime(&tm, &time);
}
/** Check one xtimegm() result. */
static void check_one_xtimegm(const struct tm *tm) {
struct tm tma = *tm, tmb = *tm;
time_t ta, tb;
ta = mktime(&tma);
if (xtimegm(&tmb, &tb) != 0) {
tb = -1;
}
bool pass = true;
pass &= bfs_check(ta == tb, "%jd != %jd", (intmax_t)ta, (intmax_t)tb);
if (ta != -1) {
pass &= bfs_check(tm_equal(&tma, &tmb));
}
if (!pass) {
bfs_diag("mktime(): " TM_FORMAT, TM_PRINTF(tma));
bfs_diag("xtimegm(): " TM_FORMAT, TM_PRINTF(tmb));
bfs_diag("(input): " TM_FORMAT, TM_PRINTF(*tm));
}
}
#if !BFS_HAS_TIMEGM
/** Check an overflowing xtimegm() call. */
static void check_xtimegm_overflow(const struct tm *tm) {
struct tm copy = *tm;
time_t time = 123;
bool pass = true;
pass &= bfs_check(xtimegm(©, &time) == -1 && errno == EOVERFLOW);
pass &= bfs_check(tm_equal(©, tm));
pass &= bfs_check(time == 123);
if (!pass) {
bfs_diag("xtimegm(): " TM_FORMAT, TM_PRINTF(copy));
bfs_diag("(input): " TM_FORMAT, TM_PRINTF(*tm));
}
}
#endif
/** xtimegm() tests. */
static void check_xtimegm(void) {
struct tm tm = {
.tm_isdst = -1,
};
// Check equivalence with mktime()
for (tm.tm_year = 10; tm.tm_year <= 200; tm.tm_year += 10)
for (tm.tm_mon = -3; tm.tm_mon <= 15; tm.tm_mon += 3)
for (tm.tm_mday = -31; tm.tm_mday <= 61; tm.tm_mday += 4)
for (tm.tm_hour = -1; tm.tm_hour <= 24; tm.tm_hour += 5)
for (tm.tm_min = -1; tm.tm_min <= 60; tm.tm_min += 31)
for (tm.tm_sec = -60; tm.tm_sec <= 120; tm.tm_sec += 5) {
check_one_xtimegm(&tm);
}
#if !BFS_HAS_TIMEGM
// Check integer overflow cases
check_xtimegm_overflow(&(struct tm) { .tm_sec = INT_MAX, .tm_min = INT_MAX });
check_xtimegm_overflow(&(struct tm) { .tm_min = INT_MAX, .tm_hour = INT_MAX });
check_xtimegm_overflow(&(struct tm) { .tm_hour = INT_MAX, .tm_mday = INT_MAX });
check_xtimegm_overflow(&(struct tm) { .tm_mon = INT_MAX, .tm_year = INT_MAX });
#endif
}
void check_xtime(void) {
check_xgetdate();
check_xmktime();
check_xtimegm();
}
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