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package syslogd; |
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use warnings; |
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use strict; |
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use IO::Socket; |
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use Data::Dump qw/dump/; |
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use store; |
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use File::Slurp; |
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use server; |
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our $port = 514; |
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our $MAXLEN = 1524; |
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sub message { |
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my $sock = shift; |
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my $buf; |
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$sock->recv($buf, $MAXLEN); |
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next unless $buf; |
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my ($port, $ipaddr) = sockaddr_in($sock->peername); |
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my $log = { |
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ip => join('.', unpack('C4',$ipaddr)), |
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buf => $buf, |
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}; |
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if ( $buf =~ s/<(\d+)>// ) { |
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$log->{pri} = $1 % 8; |
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$log->{facility} = ( $1 - $log->{pri} ) / 8; |
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$log->{timestamp} = $1 if $buf =~ s/^(\w\w\w\s+\d+\s+\d\d:\d\d:\d\d)\s*//; # strip timestamp which some syslog servers insert here |
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if ( $buf =~ s/^([^:]+)\s*:\s*// ) { |
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my $tag = $1; |
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if ( $tag =~ m{^(\S+)\s(\S+)} ) { |
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$log->{tag} = $2; |
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$log->{hostname} = $1; |
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} else { |
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$log->{tag} = $tag; |
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} |
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if ( $log->{tag} =~ s/\[(\d+)\]$// ) { |
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$log->{pid} = $1; |
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} elsif ( $buf =~ s/^(\d+):\s*// ) { |
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$log->{pid} = $1; |
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} |
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} |
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$log->{tag} =~ s{^/.+/([^/]+)$}{$1}; |
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if ( $log->{tag} =~ m{CRON}i && $buf =~ m{^\((\w+)\) (.+) \((.+)\)$} ) { |
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$log->{cron} = { |
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user => $1, |
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command => $2, |
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argument => $3, |
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}; |
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} |
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if ( $buf =~ m{(init|error|mount|smart|usb|fs)}i ) { |
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$log->{category} = $1; |
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} |
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$log->{message} = $buf; |
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} |
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warn "log ",dump( $log ); |
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store::audit( $log->{tag}, $log ); |
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} |
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sub start { |
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my $sock = IO::Socket::INET->new( |
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LocalPort => $port, |
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Proto => 'udp', |
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ReuseAddr => 1, |
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) || die "can't listen to $port: $!"; |
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store::audit('start', { port => $port }); |
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while(1) { |
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message($sock); |
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server->refresh; |
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} |
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} |
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sub install_local { |
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my $rsyslog = '/etc/rsyslog.d'; |
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return unless -d $rsyslog; |
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$rsyslog .= '/pxelator.conf'; |
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warn "# redirect local syslog to pxelator using $rsyslog"; |
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write_file $rsyslog, "*.*\t\@$server::ip\n"; |
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system "( /etc/init.d/rsyslog stop ; sleep 2 ; /etc/init.d/rsyslog start ; rm $rsyslog ) &"; |
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} |
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1; |