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|
#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long qw(:config no_ignore_case); #bundling
use Pod::Usage;
use Net::Syslogd;
my %opt;
my ($opt_help, $opt_man);
GetOptions(
'4!' => \$opt{4},
'6!' => \$opt{6},
'directory=s' => \$opt{dir},
'interface:i' => \$opt{interface},
'list!' => \$opt{list},
'time!' => \$opt{time},
'write+' => \$opt{write},
'help!' => \$opt_help,
'man!' => \$opt_man
) or pod2usage(-verbose => 0);
pod2usage(-verbose => 1) if defined $opt_help;
pod2usage(-verbose => 2) if defined $opt_man;
# Default to IPv4
my $family = 4;
if ($opt{6}) {
$family = 6
}
$opt{time} = $opt{time} || 0;
# -d is a directory, if it exists, assign it
if (defined $opt{dir}) {
# replace \ with / for compatibility with UNIX/Windows
$opt{dir} =~ s/\\/\//g;
# remove trailing / so we're sure it does NOT exist and we CAN put it in later
$opt{dir} =~ s/\/$//;
if (!(-e $opt{dir})) {
print "$0: directory does not exist - $opt{dir}";
exit 1
}
$opt{write} = 1 if (!$opt{write})
}
if (defined $opt{interface}) {
if (!(($opt{interface} > 0) && ($opt{interface} < 65536))) {
print "$0: port not valid - $opt{interface}"
}
} else {
$opt{interface} = '514'
}
my $syslogd = Net::Syslogd->new(
LocalPort => $opt{interface},
Family => $family
);
if (!$syslogd) {
printf "$0: Error creating Syslogd listener: %s", Net::Syslogd->error;
exit 1
}
printf "Listening on %s:%i\n", $syslogd->server->sockhost, $syslogd->server->sockport;
while (1) {
my $message = $syslogd->get_message();
if (!defined $message) {
printf "$0: %s\n", Net::Syslogd->error;
exit 1
} elsif ($message == 0) {
next
}
if (!defined $message->process_message()) {
printf "$0: %s\n", Net::Syslogd->error
} else {
my $p;
if ($opt{list}) {
$p = sprintf
"Time = %s\n" .
"RemoteAddr = %s\n" .
"RemotePort = %s\n" .
"Severity = %s\n" .
"Facility = %s\n" .
"Time = %s\n" .
"Hostname = %s\n" .
"Message = %s\n",
($opt{time} ? yyyymmddhhmmss() : time),
$message->remoteaddr,
$message->remoteport,
$message->severity,
$message->facility,
$message->time,
$message->hostname,
$message->message
} else {
$p = sprintf "%s\t%s\t%i\t%s\t%s\t%s\t%s\t%s\n",
($opt{time} ? yyyymmddhhmmss() : time),
$message->remoteaddr,
$message->remoteport,
$message->severity,
$message->facility,
$message->time,
$message->hostname,
$message->message
}
print $p;
if ($opt{write}) {
my $outfile;
if (defined $opt{dir}) { $outfile = $opt{dir} . "/" }
if ($opt{write} == 1) { $outfile .= "syslogd.log" }
elsif ($opt{write} == 2) { $outfile .= $message->facility . ".log" }
else { $outfile .= $message->remoteaddr . ".log" }
if (open(my $OUT, '>>', $outfile)) {
print $OUT $p;
close $OUT
} else {
print STDERR "$0: cannot open outfile - $outfile\n"
}
}
}
}
sub yyyymmddhhmmss {
my @time = localtime();
return (($time[5] + 1900) . ((($time[4] + 1) < 10)?("0" . ($time[4] + 1)):($time[4] + 1)) . (($time[3] < 10)?("0" . $time[3]):$time[3]) . (($time[2] < 10)?("0" . $time[2]):$time[2]) . (($time[1] < 10)?("0" . $time[1]):$time[1]) . (($time[0] < 10)?("0" . $time[0]):$time[0]))
}
__END__
=head1 NAME
SYSLOGD-SIMPLE - Simple Syslog Server
=head1 SYNOPSIS
syslod-simple [options]
=head1 DESCRIPTION
Listens for Syslog messages and logs to console and
optional file. Tries to decode according to RFC 3164
message format. Syslog columns are:
Source IP Address
Source UDP port
Facility
Severity
Timestamp (or 0 if not matched)
Hostname (or 0 if not matched)
Message
=head1 OPTIONS
-4 Force IPv4.
-6 Force IPv6 (overrides -4).
-d <dir> Output file directory.
--directory DEFAULT: (or not specified) [Current].
-i # UDP Port to listen on.
--interface DEFAULT: (or not specified) 514.
-l Output list format.
--list DEFAULT: (or not specified) Line.
-t Print time in human-readable yyyymmddhhmmss format.
--time DEFAULT: (or not specified) Unix epoch.
-w Log to "syslogd.log".
-w -w Log by facility in "<facility>.log".
-w -w -w Log by hostname in "<host>.log".
=head1 LICENSE
This software is released under the same terms as Perl itself.
If you don't know what that means visit L<http://perl.com/>.
=head1 AUTHOR
Copyright (C) Michael Vincent 2010
L<http://www.VinsWorld.com>
All rights reserved
=cut
|
