/usr/share/perl5/EBox/OpenVPN/Client.pm is in zentyal-openvpn 2.3.10+quantal1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package EBox::OpenVPN::Client;
# Description: Class for modelling each of the OpenVPN servers
use strict;
use warnings;
use base qw(EBox::OpenVPN::Daemon);
use EBox::Validate qw(checkPort checkAbsoluteFilePath checkHost);
use EBox::NetWrappers;
use EBox::Sudo;
use EBox::FileSystem;
use EBox::Gettext;
use EBox::OpenVPN::Client::ValidateCertificate;
use EBox::OpenVPN::Server::ClientBundleGenerator::EBoxToEBox;
use Error qw(:try);
use File::Temp;
use Params::Validate qw(validate_pos SCALAR);
sub new
{
my ($class, $row) = @_;
my $self = $class->SUPER::new($row);
bless $self, $class;
return $self;
}
sub type
{
return 'client';
}
# Method: proto
#
# Returns:
# the protocol used by the server
#
sub proto
{
my ($self) = @_;
my $conf = $self->{row}->subModel('configuration');
my $configRow = $conf->row();
my $portAndProtocol = $configRow->elementByName('serverPortAndProtocol');
return $portAndProtocol->protocol();
}
sub localAddr
{
my ($self) = @_;
return $self->_configAttr('localAddr');
}
sub lport
{
my ($self) = @_;
return $self->_configAttr('lport');
}
sub routeUpCmd
{
my ($self) = @_;
return $self->_configAttr('routeUpCmd');
}
sub setRouteUpCmd
{
my ($self, $cmd) = @_;
my $conf = $self->{row}->subModel('configuration');
my $configRow = $conf->row();
$configRow->elementByName('routeUpCmd')->setValue($cmd);
$configRow->store();
}
# Method: setLocalAddrAndPort
#
# Set the local address and local port to bind for the VPN client
#
# Parameters:
#
# newLocalAddr - String the new local IP address
#
# newLocalPort - Int the new local port
#
sub setLocalAddrAndPort
{
my ($self, $newLocalAddr, $newLocalPort) = @_;
$newLocalAddr = undef unless ( $newLocalAddr );
$newLocalPort = undef unless ( $newLocalPort );
my $conf = $self->{row}->subModel('configuration');
my $configRow = $conf->row();
$configRow->elementByName('localAddr')->setValue($newLocalAddr);
$configRow->elementByName('lport')->setValue($newLocalPort);
$configRow->store();
}
sub _filePath
{
my ($self, $name) = @_;
my $conf = $self->{row}->subModel('configuration');
my $configRow = $conf->row();
my $fileField = $configRow->elementByName($name);
return $fileField->path();
}
# Method: caCertificate
#
# Returns:
# returns the path to the CA certificate
sub caCertificate
{
my ($self) = @_;
return $self->_filePath('caCertificate');
}
# Method: certificate
#
# Returns:
# returns the path to the certificate
sub certificate
{
my ($self) = @_;
return $self->_filePath('certificate');
}
# Method: certificateKey
#
# Returns:
# returns the path to the private key
sub certificateKey
{
my ($self) = @_;
return $self->_filePath('certificateKey');
}
# Method: privateDir
#
# gets the private dir used by the client ot store his certificates
# and keys if it does not exists it will be created
#
# Returns:
# returns the client's protocol
sub privateDir
{
my ($self) = @_;
my $name = $self->name;
return __PACKAGE__->privateDirForName($name);
}
sub privateDirForName
{
my ($class, $name) = @_;
my $openVPNConfDir = $class->_openvpnModule->confDir();
my $dir = $openVPNConfDir . "/$name.d";
# For compability with older version
if (not EBox::Sudo::fileTest('-d', $dir)) {
if ( EBox::Sudo::fileTest('-e', $dir) ) {
throw EBox::Exceptions::Internal("$dir exists but is not a directory");
}
# create dir if it does not exist
EBox::Sudo::root("mkdir --mode 0700 '$dir'");
}
# end compability block
return $dir;
}
sub createDirectories
{
my ($self) = @_;
my $dir = $self->privateDir();
if (not EBox::Sudo::fileTest('-d', $dir)) {
if ( EBox::Sudo::fileTest('-e', $dir) ) {
throw EBox::Exceptions::Internal(
"$dir exists but is not a directory");
}
# create dir if it does not exist
EBox::Sudo::root("mkdir --mode 0700 '$dir'");
}
}
sub _setPrivateFile
{
my ($self, $type, $path) = @_;
if (not EBox::Sudo::fileTest('-r', $path)) {
throw EBox::Exceptions::Internal('Cannot read private file source');
}
$self->createDirectories();
my $privateDir = $self->privateDir();
my $newPath = "$privateDir/$type";
try {
EBox::Sudo::root("cp '$path' '$newPath'");
EBox::Sudo::root("chmod 0400 '$newPath'");
EBox::Sudo::root("chown 0.0 '$newPath'");
}
otherwise {
EBox::Sudo::root("rm -f '$newPath'");
};
$self->setConfString($type, $newPath);
}
# Method: internal
#
# tell wether the client must been internal for users in the UI or nodaemon
# is a internal daemon used and created by other EBox services
#
# Returns:
# returns the daemon's internal state
sub internal
{
my ($self) = @_;
return $self->_rowAttr('internal');
}
# Method: daemonFiles
# Override <EBox::OpenVPN::Daemon::daemonFiles> method
sub daemonFiles
{
my ($class, $name) = @_;
my @files = $class->SUPER::daemonFiles($name);
push @files, $class->privateDirForName($name);
return @files;
}
sub confFileTemplate
{
my ($self) = @_;
return "openvpn/openvpn-client.conf.mas";
}
sub confFileParams
{
my ($self) = @_;
my @templateParams;
push @templateParams, (dev => $self->iface());
my @paramsNeeded = qw(name caCertificate certificate certificateKey
proto user group dh localAddr lport routeUpCmd);
foreach my $param (@paramsNeeded) {
my $accessor_r = $self->can($param);
defined $accessor_r or die "Cannot found accessor for param $param";
my $value = $accessor_r->($self);
defined $value or next;
push @templateParams, ($param => $value);
}
my $mssFix = EBox::Config::configkey('mss_fix');
if ( $mssFix ) {
push(@templateParams, ( mssFix => $mssFix) );
}
push @templateParams, (servers => $self->servers() );
# We can only have proxy settings with TCP clients
if ( $self->proto() eq 'tcp' ) {
push(@templateParams, (proxySettings => $self->_proxySettings() ));
}
return \@templateParams;
}
# Method: limitRespawn
#
# Overrides:
#
# <EBox::OpenVPN::Daemon>
#
sub limitRespawn
{
my ($self) = @_;
if ( $self->internal() ) {
return 1;
} else {
return 0;
}
}
sub checkServer
{
my ($self, $server) = @_;
if (($server eq '127.0.0.1') or ($server eq 'localhost')) {
throw EBox::Exceptions::External(
__x(
'VPN client should not be configured to connect to the address {addr} because is a address of the localhost itsef',
addr => $server
)
);
}
my $net = EBox::Global->modInstance('network');
my @ifaces = @{$net->ifaces()};
foreach my $ifc (@ifaces) {
my $addrs = $net->ifaceAddresses($ifc);
foreach my $addr_r (@{ $addrs}) {
my $address = $addr_r->{address};
if ($server eq $address) {
throw EBox::Exceptions::External(
__x(
'VPN client should not be configured to connect to the address {addr} because is a address of a local network interface',
addr => $server
)
);
}
}
}
}
# Method: servers
#
# Get the servers to which the client will try to connect
#
# Returns:
#
# a reference to the list of server. Each item in the list of
# servers is a reference to a list which contains the IP address
# and port of one server
sub servers
{
my ($self) = @_;
my $config = $self->{row}->subModel('configuration');
my $server = $config->server();
my $portAndProtocol = $config->row()->elementByName('serverPortAndProtocol');
my $port = $portAndProtocol->port();
my @servers = ([ $server => $port ]);
return \@servers;
}
# Method: _proxySettings
#
# Get the HTTP proxy settings defined in Network module to reach
# OpenVPN servers
#
# Returns:
#
# Hash ref - containing the following keys
#
# - server - the HTTP proxy server
# - port - the HTTP proxy port
#
# - authFile - if authenticated, then a file path which
# includes the username and password in two lines
#
# [] - if there is no proxy settings
#
sub _proxySettings
{
my ($self) = @_;
my $retVal = [];
my $net = EBox::Global->getInstance(1)->modInstance('network');
my $settings = $net->proxySettings();
if ( defined($settings) ) {
$retVal = { server => $settings->{server},
port => $settings->{port} };
if ( exists $settings->{username} ) {
# Create the auth file
my $authFile = $self->privateDir() . '/proxy-auth';
my $tmpFile = new File::Temp();
open(my $fh, '>', $tmpFile->filename());
print $fh $settings->{username} . "\n";
print $fh $settings->{password} . "\n";
close($fh);
EBox::Sudo::root("cp '" . $tmpFile->filename() . qq{' '$authFile'});
$retVal->{authFile} = $authFile;
}
}
return $retVal;
}
sub ripDaemon
{
my ($self) = @_;
# internal client don't need to push routes to the server
(not $self->internal)
or return undef;
$self->isEnabled() or return undef;
my $iface = $self->ifaceWithRipPasswd();
return { iface => $iface, redistribute => 1 };
}
sub ifaceMethodChanged
{
my ($self, $iface, $oldmethod, $newmethod) = @_;
if ($newmethod eq 'nonset') {
return 1 if $self->_availableIfaces() == 1;
}
return undef;
}
sub vifaceDelete
{
my ($self, $iface, $viface) = @_;
return 1 if $self->_availableIfaces() == 1;
return undef;
}
sub freeIface
{
my ($self, $iface) = @_;
my $ifaces = $self->_availableIfaces();
if ($ifaces == 1) {
$self->{row}->elementByName('service')->setValue(0);
$self->stop() if $self->isRunning();
EBox::warn("OpenVPN client "
. $self->name
. " was deactivated because there is not any network interfaces available"
);
}
}
sub freeViface
{
my ($self, $iface, $viface) = @_;
$self->freeIface($viface);
}
sub changeIfaceExternalProperty # (iface, external)
{
my ($self, $iface, $external) = @_;
# no effect for openvpn clients. Except that the server may not be reacheable
# anymore but we don't check
# this in any moment..
return;
}
sub staticIfaceAddressChanged
{
my ($self, $iface, $oldaddr, $oldmask, $newaddr, $newmask) = @_;
my @servers = @{ $self->servers() };
foreach my $server (@servers) {
my ($addr, $port) = @{ $server };
defined $addr or
next;
if ($addr eq $newaddr) {
# trouble !
return 1;
}
}
return undef;
}
sub _availableIfaces
{
my ($self) = @_;
my $network = EBox::Global->modInstance('network');
my @ifaces = @{ $network->ExternalIfaces };
# XXX it should care of internal ifaces only until we close #391
push @ifaces, @{ $network->InternalIfaces };
return scalar @ifaces;
}
sub summary
{
my ($self) = @_;
if ($self->internal) { # no summary for internal clients
return ();
}
my @summary;
push @summary, __x('Client {name}', name => $self->name);
my $service = $self->isEnabled() ? __('Enabled') : __('Disabled');
push @summary,__('Service'), $service;
my $running = $self->isRunning() ? __('Running') : __('Stopped');
push @summary,__('Daemon status'), $running;
my $proto = $self->proto();
my @servers = @{ $self->servers };
# XXX only one server supported now!
my ($addr, $port) = @{ $servers[0] };
my $server = "$addr $port/\U$proto";
push @summary,__('Connection target'), $server;
my $ifAddr = $self->ifaceAddress();
if ($ifAddr) {
push @summary, (__('VPN interface address'), $ifAddr);
}else {
push @summary, (__('VPN interface address'), __('No active'));
}
return @summary;
}
sub backupCertificates
{
my ($self, $dir) = @_;
my $d = "$dir/" . $self->name;
EBox::FileSystem::makePrivateDir($d);
my $dirEmpty = 0;
foreach my $cert (qw(caCertificate certificate certificateKey)) {
my $orig = $self->$cert();
if (EBox::Sudo::fileTest('-r', $orig)) {
my $dest = "$d/$cert";
EBox::Sudo::root("cp '$orig' '$dest'");
}
else {
# all certifcates or nothing bz validation issues between
# certificates ...
$dirEmpty = 1;
last;
}
}
if ($dirEmpty) {
# we remove the directory as to signal that the client is uninitialized
# (no certificates)
EBox::Sudo::root("rm -rf '$d'");
return;
}
EBox::Sudo::root("chown ebox.ebox $d/*");
}
sub restoreCertificates
{
my ($self, $dir) = @_;
$self->createDirectories();
my $d = "$dir/" . $self->name;
if (not -d $d) {
# XXX we don't abort to mantain compability with previous bakcup and
# because uninitialized clients don't save certificates
EBox::warn(
'No directory found with saved certificates for client '
. $self->name
.'. No certificates will be restores'
);
next;
}
# before copyng and overwritting files, check if all needed files are valid
# why? if there is a error is a little less probable we left a
# unusable state
my @files = ("$d/caCertificate", "$d/certificate", "$d/certificateKey" );
EBox::OpenVPN::Client::ValidateCertificate::check("$d/caCertificate",
"$d/certificate","$d/certificateKey");
# set the files from the backup in the client
try {
__PACKAGE__->setCertificatesFilesForName(
$self->name(),
caCertificate => "$d/caCertificate",
certificate => "$d/certificate",
certificateKey => "$d/certificateKey");
}
otherwise {
my $e = shift;
EBox::error( 'Error restoring certifcates for client '
. $self->name
.'. Probably the certificates will be inconsistents');
$e->throw();
};
}
# Method: setCertificatesFilesForName
#
# Copy certificates and private key to the final destination
#
# Parameters:
#
# name - String the client's name
#
# pathByFile - Hash containing the certificate file paths with
# the following keys:
#
# caCertificate
# certificate
# certificateKey
#
# Returns:
#
# hash ref - containing the new paths for certificates and key
# with the same keys as parameter pathByFile
#
sub setCertificatesFilesForName
{
my ($class, $name, %pathByFile) = @_;
my %retValue = ();
my $clientConfDir = $class->privateDirForName($name);
my @files = qw(caCertificate certificate certificateKey );
foreach my $f (@files) {
# the destination must be firstly the same as the value obtained with
# tmpPath in the EBox::Type::File to assure the checks and then the final destination
my $tmpDest = EBox::Config::tmp() . $f . '_path';
EBox::Sudo::root("cp '" . $pathByFile{$f} . "' '$tmpDest'");
my $finalDest = "$clientConfDir/$f";
EBox::Sudo::root("cp '" . $pathByFile{$f} . "' '$finalDest'");
EBox::Sudo::root("chmod 0400 '$finalDest'");
$retValue{$f} = $finalDest;
}
return \%retValue;
}
sub usesPort
{
my ($self, $proto, $port, $iface) = @_;
my $ownProto = $self->proto;
defined $ownProto
or return undef; # uninitialized server
if ($proto ne $ownProto) {
return undef;
}
my $ownPort = $self->lport;
defined $ownPort
or return undef; #uninitialized server
if ($port ne $ownPort) {
return undef;
}
my $localAddr = $self->localAddr();
if (defined $iface and $localAddr) {
my @ifaceAddresses = EBox::NetWrappers::iface_addresses($iface);
foreach my $ifAddr (@ifaceAddresses) {
if ($ifAddr eq $localAddr) {
# client listening in the given iface
return 1;
}
}
return 0; # not listening in the given iface
} else {
return 1;
}
}
1;
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