git.rot13.org Git - pxelator/blob - lib/PXElator/syslogd.pm

   1 package syslogd;
   2
   3 use warnings;
   4 use strict;
   5
   6 use IO::Socket;
   7 use Data::Dump qw/dump/;
   8 use CouchDB;
   9
  10 use server;
  11
  12 our $port = 514;
  13 our $MAXLEN = 1524;
  14
  15 sub message {
  16         my $sock = shift;
  17
  18         my $buf;
  19         $sock->recv($buf, $MAXLEN);
  20
  21         next unless $buf;
  22
  23         my ($port, $ipaddr) = sockaddr_in($sock->peername);
  24         my $log = {
  25                 ip => join('.', unpack('C4',$ipaddr)),
  26                 buf => $buf,
  27         };
  28
  29         if ( $buf =~ s/<(\d+)>// ) {
  30                 $log->{pri}    = $1 % 8;
  31                 $log->{facility} = ( $1 - $log->{pri} ) / 8;
  32
  33                 $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
  34
  35                 if ( $buf =~ s/^([^:]+)\s*:\s*// ) {
  36                         my $tag = $1;
  37                         if ( $tag =~ m{^(\S+)\s(\S+)} ) {
  38                                 $log->{tag} = $2;
  39                                 $log->{hostname} = $1;
  40                         } else {
  41                                 $log->{tag} = $tag;
  42                         }
  43
  44                         if ( $log->{tag} =~ s/\[(\d+)\]$// ) {
  45                                 $log->{pid} = $1;
  46                         } elsif ( $buf =~ s/^(\d+):\s*// ) {
  47                                 $log->{pid} = $1;
  48                         }
  49                 }
  50
  51                 if ( $log->{tag} =~ m{CRON}i && $buf =~ m{^\((\w+)\) (.+) \((.+)\)$} ) {
  52                         $log->{cron} = {
  53                                 user => $1,
  54                                 command => $2,
  55                                 argument => $3,
  56                         };
  57                 }
  58
  59                 $log->{message} = $buf;
  60         }
  61
  62         warn "log ",dump( $log );
  63         CouchDB::audit( 'syslog', $log );
  64 }
  65
  66 sub start {
  67
  68         my $sock = IO::Socket::INET->new(
  69                 LocalPort => $port,
  70                 Proto => 'udp',
  71                 ReuseAddr => 1,
  72         ) || die "can't listen to $port: $!";
  73
  74         CouchDB::audit('start', { port => $port });
  75
  76         while(1) {
  77                 message($sock);
  78                 server->refresh;
  79         }
  80 }
  81
  82 1;