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Improved SNMP trap handling against incomplete traps or partially delayed ones.

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This commit is contained in:
Hirofumi Kosaka 2017-06-19 15:54:27 +09:00
parent f0225f4df4
commit 6db2ba2c20
1 changed files with 26 additions and 10 deletions
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36
pandora_server/lib/PandoraFMS/SNMPServer.pm
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@ -210,6 +210,11 @@ sub pandora_snmptrapd {
# Try to save as much information as possible if the trap could not be parsed
$oid = $type_desc if ($oid eq '' || $oid eq '.');
if (!defined($oid)) {
logger($pa_config, "[W] snmpTrapOID not found (Illegal SNMPv1 trap?)", 1);
return;
}
} elsif ($trap_ver eq "SNMPv2") {
($date, $time, $source, $data) = split(/\[\*\*\]/, $line, 4);
my @data = split(/\t/, $data);
@ -440,21 +445,32 @@ sub read_snmplogfile()
return undef if (! defined($line));
my $retry_count = 0;
# More lines ?
while($read_ahead_line = <SNMPLOGFILE>) {
while(1) {
while($read_ahead_line = <SNMPLOGFILE>) {
# Get current file position
$read_ahead_pos = tell(SNMPLOGFILE);
# Get current file position
$read_ahead_pos = tell(SNMPLOGFILE);
# Get out of the loop if you find another Trap
last if($read_ahead_line =~ /^SNMP/ );
# Get out of the loop if you find another Trap
last if($read_ahead_line =~ /^SNMP/ );
# $read_ahead_line looks continued line...
# $read_ahead_line looks continued line...
# Append to the line and correct the position
chomp($line);
$line .= "$read_ahead_line";
$pos = $read_ahead_pos;
# Append to the line and correct the position
chomp($line);
$line .= "$read_ahead_line";
$pos = $read_ahead_pos;
}
# if $line looks incomplete, try to get continued line
# just within 10sec. After that, giving up to complete it
# and flush $line as it is.
last if(chomp($line) > 0 || $retry_count++ >= 10);
sleep(1);
}
# return fetched line with file position to be saved.