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Code Issues Releases Wiki Activity

00_ZWDongle.pm: Reset on 0-length data (Forum #71457)

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git-svn-id: https://svn.fhem.de/fhem/trunk@14174 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
rudolfkoenig 2017-05-03 05:30:49 +00:00
parent ea6a4f772e
commit 95be8b6983
1 changed files with 8 additions and 1 deletions
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9
fhem/FHEM/00_ZWDongle.pm
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@ -781,9 +781,16 @@ ZWDongle_Read($@)
last;
}
last if(length($data) < 4);
my $len = substr($data, 2, 2);
my $l = hex($len)*2;
last if(!$l || length($data) < $l+4); # Message not yet complete
last if(length($data) < $l+4); # Message not yet complete
if($l < 4) { # Bogus messages, forget the rest
$data = "";
last;
}
$msg = substr($data, 4, $l-2);
my $rcs = substr($data, $l+2, 2); # Received Checksum