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#!/usr/bin/perl
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# **** End License ****
# Update /etc/syslog.conf
# Exit code: 0 - update
# 1 - no change or error
use strict;
use lib "/opt/vyatta/share/perl5";
use Vyatta::Config;
use File::Compare;
my $SYSLOG_CONF = '/etc/syslog.conf';
my $SYSLOG_TMP = "/tmp/syslog.conf.$$";
my $MESSAGES = '-/var/log/messages';
my $CONSOLE = '/dev/console';
my $BEGIN_VYATTA = '### BEGIN VYATTA';
my $END_VYATTA = '### END VYATTA';
my %entries = ();
die "$0 expects no arguments\n" if (@ARGV);
sub add_entry {
my ( $selector, $target ) = @_;
$entries{$target} = [] unless $entries{$target};
push @{ $entries{$target} }, $selector;
}
# This builds a data structure that maps from target
# to selector list for that target
sub read_config {
my ( $config, $level, $target ) = @_;
foreach my $facility ( $config->listNodes("$level facility") ) {
my $loglevel = $config->returnValue("$level facility $facility level");
$facility = '*' if ( $facility eq 'all' );
$loglevel = '*' if ( $loglevel eq 'all' );
add_entry( $facility . '.' . $loglevel, $target );
}
}
my $config = new Vyatta::Config;
$config->setLevel("system syslog");
read_config( $config, 'global', $MESSAGES );
# Default syslog.conf if no global entry
unless (%entries) {
add_entry( '*.notice', $MESSAGES );
add_entry( 'local7.*', $MESSAGES );
}
read_config( $config, 'console', $CONSOLE );
foreach my $host ( $config->listNodes('host') ) {
read_config( $config, "host $host", "@$host" );
}
foreach my $file ( $config->listNodes('file') ) {
read_config( $config, "file $file", $file );
}
foreach my $user ( $config->listNodes('user') ) {
read_config( $config, 'user $user', $user );
}
if ( -r $SYSLOG_CONF ) {
system("sed -e '/$BEGIN_VYATTA/,/$END_VYATTA/d' <$SYSLOG_CONF >$SYSLOG_TMP")
== 0 or die "Can't read $SYSLOG_CONF";
}
open my $out, '>>', $SYSLOG_TMP
or die "Can't open $SYSLOG_TMP: $!";
print $out "$BEGIN_VYATTA\n";
foreach my $target ( keys %entries ) {
print $out join( ';', @{ $entries{$target} } ), "\t$target\n";
}
print $out "$END_VYATTA\n";
close $out
or die "Can't output $SYSLOG_TMP: $!";
# Don't need to do anything, save time on boot
if ( compare( $SYSLOG_CONF, $SYSLOG_TMP ) == 0 ) {
unlink($SYSLOG_TMP);
exit 1;
}
system("sudo cp $SYSLOG_TMP $SYSLOG_CONF") == 0
or die "Can't copy $SYSLOG_TMP to $SYSLOG_CONF";
unlink($SYSLOG_TMP);
exit 0;
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