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#!/usr/bin/perl
use Sys::Syslog;
$CSSDir = shift || "/opt/SYMCScan";
$CSSUpdateCommand="$CSSDir/bin/liveupdate.sh";
$LockFile = shift || "/var/spool/MailScanner/incoming/Locks/cssBusy.lock";
$LOCK_SH = 1;
$LOCK_EX = 2;
$LOCK_NB = 4;
$LOCK_UN = 8;
eval { Sys::Syslog::setlogsock('unix'); }; # This may fail!
Sys::Syslog::openlog("css-autoupdate", 'pid, nowait', 'mail');
BailOut("Installation dir \"$CSSDir/bin\" does not exist!")
unless $CSSDir ne "" && -d "$CSSDir/bin";
if (-x $CSSUpdateCommand) {
# Timeout prevention
$SIG{ALRM} = sub { die "timeout"};
&LockCSS();
eval {
alarm 300;
$retval=system($CSSUpdateCommand)>>8;
&UnlockCSS();
alarm 0;
};
if ($@) {
if ($@ =~ /timeout/) {
# We timed out!
&UnlockCSS();
alarm 0;
Sys::Syslog::syslog('err', "WARNING: CSS LiveUpdate timed out");
}
} else {
alarm 0;
Sys::Syslog::syslog('info', "CSS LiveUpdate Completed");
}
} else {
Sys::Syslog::syslog('err', "CSS updater $CSSUpdateCommand cannot be run");
}
exit 0;
sub BailOut {
Sys::Syslog::syslog('err', @_);
Sys::Syslog::closelog();
warn "@_, $!";
exit 1;
}
sub LockCSS {
open(LOCK, ">$LockFile") or return;
flock(LOCK, $LOCK_EX);
print LOCK "Locked for updating CSS patterns by $$\n";
}
sub UnlockCSS {
print LOCK "Unlocked after updating CSS patterns by $$\n";
flock(LOCK, $LOCK_UN);
close LOCK;
}
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