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common: New functions timegm_u64, isotime2epoch_u64.

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* common/mischelp.c (timegm): Move to ...
* common/gettime.c (timegm): here.  On Windows use timegm_u32.
(timegm_u32): New.
(isotime2epoch): Factor code out to ...
(isotime_make_tm): new helper.
(isotime2epoch_u64): New.
(_win32_timegm): Remove duplicated code.
(parse_timestamp): Use of timegm.
(scan_isodatestr): Fallback to isotime2epoch_u64.
--

This mainly helps on 32 bit Windows.  For Unix we assume everyone is
using 64 bit or shall wait until the libc hackers finally provide a
time64_t.

GnuPG-bug-id: 6736
This commit is contained in:
Werner Koch 2023-10-26 09:59:40 +02:00
parent 88b8add558
commit bb70089d57
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 176 additions and 154 deletions
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8
common/gettime.h
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@ -32,7 +32,7 @@
#include <time.h> /* We need time_t. */
#include <gpg-error.h> /* We need gpg_error_t. */
#include <stdint.h> /* We use uint64_t. */
/* A type to hold the ISO time. Note that this is the same as
the KSBA type ksba_isotime_t. */
@ -43,6 +43,11 @@ typedef char gnupg_isotime_t[16];
#define GNUPG_ISOTIME_NONE \
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
#ifndef HAVE_TIMEGM
time_t timegm (struct tm *tm);
#endif /*!HAVE_TIMEGM*/
uint64_t timegm_u64 (struct tm *tm);
time_t gnupg_get_time (void);
struct tm *gnupg_gmtime (const time_t *timep, struct tm *result);
void gnupg_get_isotime (gnupg_isotime_t timebuf);
@ -57,6 +62,7 @@ int isotime_p (const char *string);
int isotime_human_p (const char *string, int date_only);
size_t string2isotime (gnupg_isotime_t atime, const char *string);
time_t isotime2epoch (const char *string);
uint64_t isotime2epoch_u64 (const char *string);
void epoch2isotime (gnupg_isotime_t timebuf, time_t atime);
int isodate_human_to_tm (const char *string, struct tm *t);
time_t parse_timestamp (const char *timestamp, char **endp);