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Add defensive check for localtime_r() call

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Pete Nelson 2015-03-14 16:56:35 -04:00
parent 5e2defebe5
commit 3ef2cd70a4
1 changed files with 9 additions and 3 deletions
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12
src/util.cc
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@ -1356,9 +1356,13 @@ double calc_next_rotate(double current, double interval, double base)
time_t teatime = time_t(current);
struct tm t;
t = *localtime_r(&teatime, &t);
t.tm_hour = t.tm_min = t.tm_sec = 0;
double startofday = mktime(&t);
if ( ! localtime_r(&teatime, &t) )
{
reporter->Error("calc_next_rotate(): can't parse current time");
// fall back to the method used if no base time is given
base = -1;
}
if ( base < 0 )
// No base time given. To get nice timestamps, we round
@ -1367,6 +1371,8 @@ double calc_next_rotate(double current, double interval, double base)
+ interval - current;
// current < startofday + base + i * interval <= current + interval
t.tm_hour = t.tm_min = t.tm_sec = 0;
double startofday = mktime(&t);
return startofday + base +
ceil((current - startofday - base) / interval) * interval -
current;