[Hamlib-developer] Year 2038 issues

[Nate B. <n0...@n0...>]

Early this morning at 03:14:07 UTC the time remaining until the Unix
Epoch rollover where the signed 32 bit count of seconds since 01 Jan
1970 00:00:00 UTC is just under 14 years.  Certainly, that is a long
time off, but, Hamlib is now 23 1/2 years old!

I have not looked deeply, but it may be useful to ensure that Hamlib contains
no problematic uses of time_t or anything that uses the 32 bit signed integer
of the Unix epoch.  I see the following:

$ git grep time_t
include/hamlib/rig.h:639:typedef float agc_time_t;
include/hamlib/rig.h:2730:    time_t twiddle_time;        /*!< time when vfo twiddling was detected */
include/hamlib/rig.h:2926:    time_t twiddle_time;        /*!< time when vfo twiddling was detected */
lib/gettimeofday.c:23:        time_t tm;
lib/win32termios.h:70:  time_t  tv_sec;
rigs/icom/icom.c:418:const agc_time_t agc_level[] = // default
rigs/icom/icom.c:422:const agc_time_t agc_level2[] = // AM Mode for 7300/9700/705
rotators/satel/satel.c:102://    time_t time;
security/AESStringCrypt.c:90:    time_t              current_time;
security/security.c:36:static struct tm *gmtime_r(const time_t *t, struct tm *r)
security/security.c:58:    time_t t;
src/microham.c:108:static time_t lastbeat = 0;
src/microham.c:112:static time_t starttime;
src/misc.c:2823:static struct tm *gmtime_r(const time_t *t, struct tm *r)
src/misc.c:2846:    time_t t;
src/sleep.c:62:    tv1.tv_sec = (time_t) delay;
src/sleep.c:179:    // Convert struct tm to time_t
src/sleep.c:180:    time_t start_seconds = mktime(&start);
src/sleep.c:181:    time_t end_seconds = mktime(&end);
src/sleep.c:191:    time_t rawtime;
tests/rigmatrix.c:632:    time_t gentime;
tests/testsecurity.c:34:static struct tm *gmtime_r(const time_t *t, struct tm *r)
tests/testsecurity.c:55:    time_t t;

Hopefully someone will jump at the chance to make sure that Hamlib will be
y2k38 ready.

73, Nate

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