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receiver: Avoid division by 0 after system start if CLOCK_MONOTONIC is used 

Depending on how CLOCK_MONOTONIC is implemented, time_monotonic() might
return 0 within 1 second after the system is started.  If that's the
case, we just default to 0 for now to avoid a crash (doesn't "hide" the
system time, but it's only the uptime anyway in this case).

Closes strongswan/strongswan#435.
This commit is contained in:
Tobias Brunner 2021-06-08 15:33:36 +02:00
parent 8dbf40d19a
commit a90716cd4d
1 changed files with 1 additions and 1 deletions
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2
src/libcharon/network/receiver.c
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@ -629,7 +629,7 @@ receiver_t *receiver_create()
},
.esp_cb_mutex = mutex_create(MUTEX_TYPE_DEFAULT),
.secret_switch = now,
.secret_offset = random() % now,
.secret_offset = now ? random() % now : 0,
);
if (lib->settings->get_bool(lib->settings,