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#
# Module: VyattaKeepalived.pm
#
# **** 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.
#
# Author: Stig Thormodsrud
# Date: October 2007
# Description: Common keepalived definitions/funcitions
#
# **** End License ****
#
package VyattaKeepalived;
use VyattaConfig;
use POSIX;
use strict;
use warnings;
my $daemon = '/usr/sbin/keepalived';
my $keepalived_conf = '/etc/keepalived/keepalived.conf';
my $sbin_dir = '/opt/vyatta/sbin';
my $state_transition = "$sbin_dir/vyatta-vrrp-state.pl";
my $keepalived_pid = '/var/run/keepalived_vrrp.pid';
my $state_dir = '/var/log/vrrpd';
my $vrrp_log = "$state_dir/vrrp.log";
sub snoop_for_master {
my ($intf, $group, $vip, $timeout) = @_;
my $file = get_master_file($intf, $group);
my $cap_filt = "-f \"host 224.0.0.18 and proto VRRP\"";
my $dis_filt = "-R \"vrrp.virt_rtr_id == $group and vrrp.ip_addr == $vip\"";
my $options = "-a duration:$timeout -p -i$intf -c1 -T pdml";
my $cmd = "tshark $options $cap_filt $dis_filt";
system("$cmd > $file 2> /dev/null");
}
sub vrrp_log {
my $timestamp = strftime("%Y%m%d-%H:%M.%S", localtime);
open my $fh, ">>", $vrrp_log;
print $fh "$timestamp: ", @_ , "\n";
close $fh;
}
sub is_running {
if (-f $keepalived_pid) {
my $pid = `cat $keepalived_pid`;
chomp $pid;
my $ps = `ps -p $pid -o comm=`;
if (defined($ps) && $ps ne "") {
return 1;
}
}
return 0;
}
sub start_daemon {
my ($conf) = @_;
my $cmd = "$daemon --vrrp --log-facility 7 --log-detail --dump-conf";
$cmd .= " --use-file $conf --vyatta-workaround";
system($cmd);
vrrp_log("start_daemon");
}
sub stop_daemon {
if (is_running()) {
my $pid = `cat $keepalived_pid`;
system("kill $pid");
vrrp_log("stop_daemon");
} else {
vrrp_log("stop daemon called while not running");
}
}
sub restart_daemon {
my ($conf) = @_;
if (VyattaKeepalived::is_running()) {
my $pid = `cat $keepalived_pid`;
chomp $pid;
system("kill -1 $pid");
vrrp_log("restart_deamon");
} else {
start_daemon($conf);
}
}
sub get_conf_file {
return $keepalived_conf;
}
sub get_state_script {
return $state_transition;
}
sub get_state_file {
my ($vrrp_intf, $vrrp_group) = @_;
my $file = "$state_dir/vrrpd_" . "$vrrp_intf" . "_" . "$vrrp_group.state";
return $file;
}
sub get_master_file {
my ($vrrp_intf, $vrrp_group) = @_;
my $file = "$state_dir/vrrpd_" . "$vrrp_intf" . "_" . "$vrrp_group.master";
return $file;
}
sub get_state_files {
my ($intf, $group) = @_;
# todo: fix sorting for ethX > 9
my @state_files;
my $LS;
if ($group eq "all") {
open($LS,"ls $state_dir |grep '^vrrpd_$intf.*\.state\$' | sort |");
} else {
my $intf_group = $intf . "_" . $group . ".state";
open($LS,
"ls $state_dir |grep '^vrrpd_$intf_group\$' | sort |");
}
@state_files = <$LS>;
close($LS);
foreach my $i (0 .. $#state_files) {
$state_files[$i] = "$state_dir/$state_files[$i]";
}
chomp @state_files;
return @state_files;
}
sub vrrp_get_config {
my ($intf, $group) = @_;
my $path;
my $config = new VyattaConfig;
if ($intf =~ m/(eth\d+)\.(\d+)/) {
$path = "interfaces ethernet $1 vif $2";
} else {
$path = "interfaces ethernet $intf";
}
$config->setLevel($path);
my $primary_addr = $config->returnOrigValue("address");
if (!defined $primary_addr) {
$primary_addr = "0.0.0.0";
}
if ($primary_addr =~ m/(\d+\.\d+\.\d+\.\d+)\/\d+/) {
$primary_addr = $1;
}
$config->setLevel("$path vrrp vrrp-group $group");
my @vips = $config->returnOrigValues("virtual-address");
my $priority = $config->returnOrigValue("priority");
if (!defined $priority) {
$priority = 1;
}
my $preempt = $config->returnOrigValue("preempt");
if (!defined $preempt) {
$preempt = "true";
}
my $advert_int = $config->returnOrigValue("advertise-interval");
if (!defined $advert_int) {
$advert_int = 1;
}
$config->setLevel("$path vrrp vrrp-group $group authentication");
my $auth_type = $config->returnOrigValue("type");
if (!defined $auth_type) {
$auth_type = "none";
}
return ($primary_addr, $priority, $preempt, $advert_int, $auth_type, @vips);
}
sub vrrp_state_parse {
my ($file) = @_;
if ( -f $file) {
my $line = `cat $file`;
chomp $line;
my ($start_time, $intf, $group, $state, $ltime) = split(' ', $line);
return ($start_time, $intf, $group, $state, $ltime);
} else {
return undef;
}
}
#end of file
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