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#
# An openvpn gateway can support three modes:
#
# (1) limited and unlimited
# (2) unlimited only
# (3) limited only
#
# The difference is that 'unlimited' gateways only allow client certs that match
# the 'unlimited_prefix', and 'limited' gateways only allow certs that match the
# 'limited_prefix'.
#
# We potentially create four openvpn config files (thus four daemons):
#
# (1) unlimited + tcp => tcp_config.conf
# (2) unlimited + udp => udp_config.conf
# (3) limited + tcp => limited_tcp_config.conf
# (4) limited + udp => limited_udp_config.conf
#
class site_openvpn {
tag 'leap_service'
include site_config::x509::cert
include site_config::x509::key
include site_config::x509::ca_bundle
Class['site_config::default'] -> Class['site_openvpn']
$openvpn = hiera('openvpn')
$openvpn_ports = $openvpn['ports']
$openvpn_config = $openvpn['configuration']
if $::ec2_instance_id {
$openvpn_gateway_address = $::ipaddress
} else {
$openvpn_gateway_address = $openvpn['gateway_address']
if $openvpn['second_gateway_address'] {
$openvpn_second_gateway_address = $openvpn['second_gateway_address']
} else {
$openvpn_second_gateway_address = undef
}
}
$openvpn_allow_unlimited = $openvpn['allow_unlimited']
$openvpn_unlimited_prefix = $openvpn['unlimited_prefix']
$openvpn_unlimited_tcp_network_prefix = '10.41.0'
$openvpn_unlimited_tcp_netmask = '255.255.248.0'
$openvpn_unlimited_tcp_cidr = '21'
$openvpn_unlimited_udp_network_prefix = '10.42.0'
$openvpn_unlimited_udp_netmask = '255.255.248.0'
$openvpn_unlimited_udp_cidr = '21'
if !$::ec2_instance_id {
$openvpn_allow_limited = $openvpn['allow_limited']
$openvpn_limited_prefix = $openvpn['limited_prefix']
$openvpn_rate_limit = $openvpn['rate_limit']
$openvpn_limited_tcp_network_prefix = '10.43.0'
$openvpn_limited_tcp_netmask = '255.255.248.0'
$openvpn_limited_tcp_cidr = '21'
$openvpn_limited_udp_network_prefix = '10.44.0'
$openvpn_limited_udp_netmask = '255.255.248.0'
$openvpn_limited_udp_cidr = '21'
}
# find out the netmask in cidr format of the primary IF
# thx to https://blog.kumina.nl/tag/puppet-tips-and-tricks/
# we can do this using an inline_template:
$factname_primary_netmask = "netmask_cidr_${::site_config::params::interface}"
$primary_netmask = inline_template('<%= scope.lookupvar(factname_primary_netmask) %>')
# deploy dh keys
include site_openvpn::dh_key
if $openvpn_allow_unlimited and $openvpn_allow_limited {
$unlimited_gateway_address = $openvpn_gateway_address
$limited_gateway_address = $openvpn_second_gateway_address
} elsif $openvpn_allow_unlimited {
$unlimited_gateway_address = $openvpn_gateway_address
$limited_gateway_address = undef
} elsif $openvpn_allow_limited {
$unlimited_gateway_address = undef
$limited_gateway_address = $openvpn_gateway_address
}
if $openvpn_allow_unlimited {
site_openvpn::server_config { 'tcp_config':
port => '1194',
proto => 'tcp',
local => $unlimited_gateway_address,
tls_remote => "\"${openvpn_unlimited_prefix}\"",
server => "${openvpn_unlimited_tcp_network_prefix}.0 ${openvpn_unlimited_tcp_netmask}",
push => "\"dhcp-option DNS ${openvpn_unlimited_tcp_network_prefix}.1\"",
management => '127.0.0.1 1000',
config => $openvpn_config
}
site_openvpn::server_config { 'udp_config':
port => '1194',
proto => 'udp',
local => $unlimited_gateway_address,
tls_remote => "\"${openvpn_unlimited_prefix}\"",
server => "${openvpn_unlimited_udp_network_prefix}.0 ${openvpn_unlimited_udp_netmask}",
push => "\"dhcp-option DNS ${openvpn_unlimited_udp_network_prefix}.1\"",
management => '127.0.0.1 1001',
config => $openvpn_config
}
} else {
tidy { '/etc/openvpn/tcp_config.conf': }
tidy { '/etc/openvpn/udp_config.conf': }
}
if $openvpn_allow_limited {
site_openvpn::server_config { 'limited_tcp_config':
port => '1194',
proto => 'tcp',
local => $limited_gateway_address,
tls_remote => "\"${openvpn_limited_prefix}\"",
server => "${openvpn_limited_tcp_network_prefix}.0 ${openvpn_limited_tcp_netmask}",
push => "\"dhcp-option DNS ${openvpn_limited_tcp_network_prefix}.1\"",
management => '127.0.0.1 1002',
config => $openvpn_config
}
site_openvpn::server_config { 'limited_udp_config':
port => '1194',
proto => 'udp',
local => $limited_gateway_address,
tls_remote => "\"${openvpn_limited_prefix}\"",
server => "${openvpn_limited_udp_network_prefix}.0 ${openvpn_limited_udp_netmask}",
push => "\"dhcp-option DNS ${openvpn_limited_udp_network_prefix}.1\"",
management => '127.0.0.1 1003',
config => $openvpn_config
}
} else {
tidy { '/etc/openvpn/limited_tcp_config.conf': }
tidy { '/etc/openvpn/limited_udp_config.conf': }
}
file {
'/usr/local/bin/add_gateway_ips.sh':
content => template('site_openvpn/add_gateway_ips.sh.erb'),
mode => '0755';
}
exec { '/usr/local/bin/add_gateway_ips.sh':
subscribe => File['/usr/local/bin/add_gateway_ips.sh'],
}
exec { 'restart_openvpn':
command => '/etc/init.d/openvpn restart',
refreshonly => true,
subscribe => [
File['/etc/openvpn'],
Class['Site_config::X509::Key'],
Class['Site_config::X509::Cert'],
Class['Site_config::X509::Ca_bundle'] ],
require => [
Package['openvpn'],
File['/etc/openvpn'],
Class['Site_config::X509::Key'],
Class['Site_config::X509::Cert'],
Class['Site_config::X509::Ca_bundle'] ];
}
cron { 'add_gateway_ips.sh':
command => '/usr/local/bin/add_gateway_ips.sh',
user => 'root',
special => 'reboot',
}
# setup the resolver to listen on the vpn IP
include site_openvpn::resolver
include site_shorewall::eip
# In wheezy, we need the openvpn backport to get the 2.3 version of
# openvpn which has proper ipv6 support
include site_apt::preferences::openvpn
package {
'openvpn':
ensure => latest,
require => Class['site_apt::preferences::openvpn'];
}
service {
'openvpn':
ensure => running,
hasrestart => true,
hasstatus => true,
require => [
Package['openvpn'],
Exec['concat_/etc/default/openvpn'] ];
}
file {
'/etc/openvpn':
ensure => directory,
notify => Exec['restart_openvpn'],
require => Package['openvpn'];
}
file {
'/etc/openvpn/keys':
ensure => directory,
require => Package['openvpn'];
}
concat {
'/etc/default/openvpn':
owner => root,
group => root,
mode => 644,
warn => true,
notify => Service['openvpn'];
}
concat::fragment {
'openvpn.default.header':
content => template('openvpn/etc-default-openvpn.erb'),
target => '/etc/default/openvpn',
order => 01;
}
concat::fragment {
"openvpn.default.autostart.${name}":
content => 'AUTOSTART=all',
target => '/etc/default/openvpn',
order => 10;
}
leap::logfile { 'openvpn': }
# Because we currently do not support ipv6 and instead block it (so no leaks
# happen), we get a large number of these messages, so we ignore them (#6540)
rsyslog::snippet { '01-ignore_icmpv6_send':
content => ':msg, contains, "icmpv6_send: no reply to icmp error" ~'
}
include site_check_mk::agent::openvpn
}
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