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# Networking functions for Network Manager
$nm_conn_dir = "/etc/NetworkManager/system-connections";
$sysctl_config = "/etc/sysctl.conf";
do 'linux-lib.pl';
# boot_interfaces()
# Returns a list of all interfaces activated at boot time
sub boot_interfaces
{
my @rv;
foreach my $f (glob("$nm_conn_dir/*.nmconnection")) {
my $cfg = &read_nm_config($f);
my $iface = { 'name' => &find_nm_config(
$cfg, "connection", "interface-name"),
'file' => $f,
'cfg' => $cfg,
'edit' => 1,
'up' => 1 };
$iface->{'fullname'} = $iface->{'name'};
# Is DHCP enabled?
my $method = &find_nm_config($cfg, "ipv4", "method");
if ($method eq "auto") {
$iface->{'dhcp'} = 1;
}
elsif ($method eq "disabled") {
$iface->{'up'} = 0;
}
my $method6 = &find_nm_config($cfg, "ipv6", "method");
if ($method6 eq "auto") {
$iface->{'auto6'} = 1;
}
# IPv4 addresses
my @virts;
my $offset = $iface->{'dhcp'} ? 1 : 2;
for(my $i=1; defined(my $addr = &find_nm_config($cfg, "ipv4", "address$i")); $i++) {
my ($ad, $gw) = split(/,/, $addr);
my ($ad, $cidr) = split(/\//, $ad);
my $nm = &prefix_to_mask($cidr);
if ($i == $offset-1) {
$iface->{'address'} = $ad;
$iface->{'netmask'} = $nm;
$iface->{'gateway'} = $gw;
}
else {
push(@virts,{ 'name' => $iface->{'name'},
'fullname' => $iface->{'name'}.":".($i-$offset),
'virtual' => $i-$offset,
'file' => $f,
'cfg' => $cfg,
'edit' => 1,
'up' => 1,
'address' => $ad,
'netmask' => $nm });
}
}
# IPv6 addresses
for(my $i=1; defined(my $addr = &find_nm_config($cfg, "ipv6", "address$i")); $i++) {
my ($ad, $gw) = split(/,/, $addr);
my ($ad, $cidr) = split(/\//, $addr);
push(@{$iface->{'address6'}}, $ad);
push(@{$iface->{'netmask6'}}, $cidr || 64);
$iface->{'gateway6'} ||= $gw;
}
# Nameservers
my @ns = split(/[ ;]+/, &find_nm_config($cfg, "ipv4", "dns"));
if (@ns) {
$iface->{'nameserver'} = \@ns;
}
my @sr = split(/[ ;]+/, &find_nm_config($cfg, "ipv4", "dns-search"));
if (@sr) {
$iface->{'search'} = \@sr;
}
# Mac address
$iface->{'ether'} = &find_nm_config($cfg, "ethernet",
"cloned-mac-address");
# MTU
$iface->{'mtu'} = &find_nm_config($cfg, "ethernet", "mtu");
# Static routes
my @routes;
for(my $i=1; defined($r = &find_nm_config($cfg, "ipv4", "route$i")); $i++) {
push(@routes, $r);
}
$iface->{'routes'} = \@routes if (@routes);
# Bridge options
my $type = &find_nm_config($cfg, "connection", "type");
if ($type eq "bridge") {
$iface->{'bridge'} = 1;
my $stp = &find_nm_config($cfg, "bridge", "stp");
$iface->{'bridgestp'} = $stp eq "false" ? "off" : "on";
}
my $master = &find_nm_config($cfg, "connection", "master");
$iface->{'bridge_master'} = $master;
push(@rv, $iface);
push(@rv, @virts);
}
# Set indexes
for(my $i=0; $i<@rv; $i++) {
$rv[$i]->{'index'} = $i;
}
# Make bridge connections
foreach my $iface (@rv) {
if ($iface->{'bridge'}) {
my ($slave) = grep { $_->{'bridge_master'} eq $iface->{'name'} } @rv;
if ($slave) {
$iface->{'bridgeto'} = $slave->{'name'};
}
}
}
return @rv;
}
# save_interface(&iface, &old-ifaces)
# Update the network manager config for an interface
sub save_interface
{
my ($iface, $boot) = @_;
$boot ||= [ &boot_interfaces() ];
if ($iface->{'virtual'} ne '') {
# Virtual IP on a real interface
my ($baseiface) = grep { $_->{'fullname'} eq $iface->{'name'} } @$boot;
$baseiface || &error("Base interface $iface->{'name'} does not exist");
if (!$iface->{'file'}) {
# Add to complete interface list
push(@$boot, $iface);
}
else {
# Update in complete list
my ($oldiface) = grep { $_->{'fullname'} eq $iface->{'fullname'} } @$boot;
$oldiface || &error("No existing interface named $iface->{'fullname'} found");
$boot->[$oldiface->{'index'}] = $iface;
}
&save_interface($baseiface, $boot);
return;
}
my $f;
my $cfg;
if ($iface->{'file'}) {
# Config file already exists
$f = $iface->{'file'};
$cfg = $iface->{'cfg'};
&lock_file($f);
}
else {
my $uuid;
if ($iface->{'bridge'}) {
# Need to create a new bridge interface
my $out = &backquote_command(
"nmcli conn add type bridge ifname ".
quotemeta($iface->{'name'})." 2>&1");
$? && &error("Failed to create NetworkManager bridge : $out");
$uuid = &nm_interface_uuid($iface->{'name'});
$uuid || &error("Could not find UUID for $iface->{'name'}");
}
else {
# Need to create a new empty config for the real interface
$uuid = &nm_interface_uuid($iface->{'name'});
if (!$uuid) {
my $out = &backquote_command(
"nmcli conn add type ethernet ifname ".
quotemeta($iface->{'name'})." 2>&1");
$? && &error("Failed to create NetworkManager interface : $out");
$uuid = &nm_interface_uuid($iface->{'name'});
}
$uuid || &error("Could not find UUID for $iface->{'name'}");
my $out = &backquote_command("nmcli conn modify ".
quotemeta($uuid)." connect.interface-name ".
quotemeta($iface->{'name'})." 2>&1");
$? && &error("Failed to create NetworkManager config : $out");
}
# Find the newly created NetworkManager config file
$boot = [ &boot_interfaces() ];
my ($newiface) = grep { $_->{'name'} eq $iface->{'name'} } @$boot;
$newiface || &error("NetworkManager did not create a new ".
"interface for $iface->{'name'}");
$cfg = $iface->{'cfg'} = $newiface->{'cfg'};
$f = $iface->{'file'} = $newiface->{'file'};
&lock_file($f);
}
# Update address and DHCP mode
my @addresses;
if ($iface->{'address'}) {
my $v = $iface->{'address'}."/".
&mask_to_prefix($iface->{'netmask'});
push(@addresses, $v);
}
foreach my $viface (grep { $_->{'name'} eq $iface->{'name'} &&
$_->{'virtual'} ne '' } @$boot) {
my $v = $viface->{'address'}."/".
&mask_to_prefix($viface->{'netmask'});
push(@addresses, $v);
}
my $method = !$iface->{'up'} ? "disabled" :
$iface->{'dhcp'} ? "auto" :
$iface->{'address'} ? "manual" : "disabled";
&save_nm_config($cfg, "ipv4", "addresses", \@addresses, "method", $method);
&save_nm_config($cfg, "ipv4", "gateway", $iface->{'gateway'});
# Update IPv6 addresses
my @address6;
for(my $i=0; $i<@{$iface->{'address6'}}; $i++) {
my $v = $iface->{'address6'}->[$i]."/".
$iface->{'netmask6'}->[$i];
push(@address6, $v);
}
my $method6 = $iface->{'auto6'} ? "auto" :
@{$iface->{'address6'}} ? "manual" : "disabled";
&save_nm_config($cfg, "ipv6", "address",
@address6 ? join(",", @address6) : undef,
"method", $method6);
# Update nameservers
my @ns = $iface->{'nameserver'} ? @{$iface->{'nameserver'}} : ();
&save_nm_config($cfg, "ipv4", "dns",
@ns ? join(" ", @ns) : undef);
my @sr = $iface->{'search'} ? @{$iface->{'search'}} : ();
&save_nm_config($cfg, "ipv4", "dns-search",
@sr ? join(" ", @sr) : undef);
# Update MAC address
&save_nm_config($cfg, "ethernet", "cloned-mac-address",
$iface->{'ether'});
# Update MTU
&save_nm_config($cfg, "ethernet", "mtu", $iface->{'mtu'});
# Update static routes
my @routes;
if ($iface->{'routes'}) {
foreach my $r (@{$iface->{'routes'}}) {
push(@routes, join(" ", split(/,/, $r)));
}
}
&save_nm_config($cfg, "ipv4", "routes", \@routes);
# Connect bridge interface
if ($iface->{'bridge'}) {
my ($oldbridgeto) = grep { $_->{'bridge_master'} eq
$iface->{'fullname'} } @$boot;
my ($bridgeto) = grep { $_->{'fullname'} eq
$iface->{'bridgeto'} } @$boot;
if ($oldbridgeto ne $bridgeto) {
if ($oldbridgeto) {
&save_nm_config($oldbridgeto->{'cfg'}, "connection",
"slave-type", undef,
"master", undef);
}
if ($bridgeto) {
&save_nm_config($bridgeto->{'cfg'}, "connection",
"slave-type", "bridge",
"master", $iface->{'fullname'});
}
}
&save_nm_config($cfg, "bridge", "stp", $iface->{'bridgestp'});
}
&unlock_file($f);
}
# delete_interface(&iface, &boot)
# Remove a boot-time interface
sub delete_interface
{
my ($iface, $boot) = @_;
$boot ||= [ &boot_interfaces() ];
if ($iface->{'virtual'} ne '') {
# Just remove the virtual address from the boot list
my ($baseiface) = grep { $_->{'fullname'} eq $iface->{'name'} } @$boot;
$baseiface || &error("Base interface $iface->{'name'} does not exist");
splice(@$boot, $iface->{'index'}, 1);
&save_interface($baseiface, $boot);
}
else {
# Remove the whole interface file
my $uuid = &find_nm_config($iface->{'cfg'}, "connection", "uuid");
$uuid || &error("No uuid found when deleting $iface->{'name'}");
my $out = &backquote_logged("nmcli conn delete ".quotemeta($uuid));
$? && &error("nmcli conn delete $uuid failed : $out");
}
}
# valid_boot_address(address)
# Is some address valid for a bootup interface
sub valid_boot_address
{
my ($a) = @_;
return &check_ipaddress_any($a);
}
# get_hostname()
sub get_hostname
{
my $hn = &read_file_contents("/etc/hostname");
$hn =~ s/\r|\n//g;
if ($hn) {
return $hn;
}
return &get_system_hostname();
}
# save_hostname(name)
sub save_hostname
{
my ($hostname) = @_;
&system_logged("hostname ".quotemeta($hostname)." >/dev/null 2>&1");
foreach my $f ("/etc/hostname", "/etc/HOSTNAME", "/etc/mailname") {
if (-r $f) {
&open_lock_tempfile(HOST, ">$f");
&print_tempfile(HOST, $hostname,"\n");
&close_tempfile(HOST);
}
}
# Use the hostnamectl command as well
if (&has_command("hostnamectl")) {
&system_logged("hostnamectl set-hostname ".quotemeta($hostname).
" >/dev/null 2>&1");
}
&get_system_hostname(undef, undef, 2); # clear cache
}
# get_domainname()
sub get_domainname
{
my $d;
&execute_command("domainname", undef, \$d, undef);
chop($d);
return $d;
}
# save_domainname(domain)
sub save_domainname
{
my ($domain) = @_;
&execute_command("domainname ".quotemeta($domain));
}
sub routing_config_files
{
return ( $nm_conn_dir );
}
# routing_input()
# show default router and device
sub routing_input
{
my ($addr, $router) = &get_default_gateway();
my ($addr6, $router6) = &get_default_ipv6_gateway();
my @ifaces = grep { $_->{'virtual'} eq '' } &boot_interfaces();
my @inames = map { $_->{'name'} } @ifaces;
# Show default gateway
print &ui_table_row($text{'routes_default'},
&ui_radio("gateway_def", $addr ? 0 : 1,
[ [ 1, $text{'routes_none'} ],
[ 0, $text{'routes_gateway'}." ".
&ui_textbox("gateway", $addr, 15)." ".
&ui_select("gatewaydev", $router, \@inames) ] ]));
# Show default IPv6 gateway
print &ui_table_row($text{'routes_default6'},
&ui_radio("gateway6_def", $addr6 ? 0 : 1,
[ [ 1, $text{'routes_none'} ],
[ 0, $text{'routes_gateway'}." ".
&ui_textbox("gateway6", $addr6, 30)." ".
&ui_select("gatewaydev6", $router6, \@inames) ] ]));
# Act as router?
my %sysctl;
&read_env_file($sysctl_config, \%sysctl);
print &ui_table_row($text{'routes_forward'},
&ui_yesno_radio("forward",
$sysctl{'net.ipv4.ip_forward'} ? 1 : 0));
# Static routes
my $rtable = &ui_columns_start([ $text{'routes_ifc'},
$text{'routes_net'},
$text{'routes_mask'},
$text{'routes_gateway'} ]);
my $i = 0;
@inames = ( "", @inames );
foreach my $b (@ifaces) {
foreach my $v (@{$b->{'routes'}}) {
my ($net, $gw) = split(/,/, $v);
my $cidr;
($net, $cidr) = split(/\//, $net);
my $mask = &prefix_to_mask($cidr);
$rtable .= &ui_columns_row([
&ui_select("dev_$i", $b->{'fullname'}, \@inames, 1, 0, 1),
&ui_textbox("net_$i", $net, 15),
&ui_textbox("mask_$i", $mask, 15),
&ui_textbox("gw_$i", $gw, 15),
]);
$i++;
}
}
$rtable .= &ui_columns_row([
&ui_select("dev_$i", "", \@inames, 1, 0, 1),
&ui_textbox("net_$i", "", 15),
&ui_textbox("mask_$i", "", 15),
&ui_textbox("gw_$i", "", 15),
]);
$rtable .= &ui_columns_end();
print &ui_table_row($text{'routes_static'}, $rtable);
}
# parse_routing()
# Save the form generated by routing_input
sub parse_routing
{
my @boot = &boot_interfaces();
# Save IPv4 address
my ($dev, $gw);
if (!$in{'gateway_def'}) {
&check_ipaddress($in{'gateway'}) ||
&error(&text('routes_egateway', &html_escape($in{'gateway'})));
$gw = $in{'gateway'};
$dev = $in{'gatewaydev'};
}
&set_default_gateway($gw, $dev, \@boot);
# Save IPv6 address
my ($dev6, $gw6);
if (!$in{'gateway6_def'}) {
&check_ip6address($in{'gateway6'}) ||
&error(&text('routes_egateway6',&html_escape($in{'gateway6'})));
$gw6 = $in{'gateway6'};
$dev6 = $in{'gatewaydev6'};
}
&set_default_ipv6_gateway($gw6, $dev6, \@boot);
# Save routing flag
my %sysctl;
&lock_file($sysctl_config);
&read_env_file($sysctl_config, \%sysctl);
$sysctl{'net.ipv4.ip_forward'} = $in{'forward'};
&write_env_file($sysctl_config, \%sysctl);
&unlock_file($sysctl_config);
# Save static routes
foreach my $b (grep { $_->{'virtual'} eq '' } @boot) {
my @r;
for(my $i=0; defined($in{"dev_$i"}); $i++) {
if ($in{"dev_$i"} eq $b->{'fullname'}) {
&check_ipaddress($in{"net_$i"}) ||
&error(&text('routes_enet', $in{"net_$i"}));
&check_ipaddress($in{"mask_$i"}) ||
&error(&text('routes_emask', $in{"mask_$i"}));
my $to = $in{"net_$i"}."/".
&mask_to_prefix($in{"mask_$i"});
&check_ipaddress($in{"gw_$i"}) ||
&error(&text('routes_egateway', $in{"gw_$i"}));
push(@r, $to.",".$in{"gw_$i"});
}
}
if (@r) {
$b->{'routes'} = \@r;
}
else {
delete($b->{'routes'});
}
&save_interface($b, \@boot);
}
}
sub supports_address6
{
return 1;
}
sub supports_no_address
{
return 1;
}
sub supports_bridges
{
return 1;
}
sub supports_bonding
{
return 0; # XXX fix later
}
sub supports_vlans
{
return 0; # XXX fix later
}
# can_edit(what)
# Can some boot-time interface parameter be edited?
sub can_edit
{
my ($what) = @_;
return $what !~ /^(bridgefd|bridgewait|bootp)$/;
}
# apply_network()
# Apply the interface and routing settings
sub apply_network
{
&system_logged("(cd / ; nmcli networking off; nmcli networking on) >/dev/null 2>&1");
}
sub network_config_files
{
return ( "/etc/hostname", "/etc/HOSTNAME", "/etc/mailname" );
}
# get_default_gateway()
# Returns the default gateway IP (if one is set) and device (if set) boot time
# settings.
sub get_default_gateway
{
foreach my $iface (&boot_interfaces()) {
if ($iface->{'gateway'}) {
return ( $iface->{'gateway'}, $iface->{'fullname'} );
}
}
return ( );
}
# set_default_gateway([gateway, device], [&boot-interfaces])
# Sets the default gateway to the given IP accessible via the given device,
# in the boot time settings.
sub set_default_gateway
{
my ($gw, $dev, $boot) = @_;
$boot ||= [ &boot_interfaces() ];
foreach my $iface (@$boot) {
if ($iface->{'fullname'} eq $dev && $iface->{'gateway'} ne $gw) {
# Need to add to this interface
$iface->{'gateway'} = $gw;
&save_interface($iface);
}
elsif ($iface->{'fullname'} ne $dev && $iface->{'gateway'}) {
# Need to remove from this interface
delete($iface->{'gateway'});
&save_interface($iface);
}
}
}
# get_default_ipv6_gateway()
# Returns the default gateway IPv6 address (if one is set) and device (if set)
# boot time settings.
sub get_default_ipv6_gateway
{
foreach my $iface (&boot_interfaces()) {
if ($iface->{'gateway6'}) {
return ( $iface->{'gateway6'}, $iface->{'fullname'} );
}
}
return ( );
}
# set_default_ipv6_gateway([gateway, device], [boot-interfaces])
# Sets the default IPv6 gateway to the given IP accessible via the given device,
# in the boot time settings.
sub set_default_ipv6_gateway
{
my ($gw, $dev, $boot) = @_;
$boot ||= [ &boot_interfaces() ];
foreach my $iface (@$boot) {
if ($iface->{'fullname'} eq $dev && $iface->{'gateway6'} ne $gw) {
# Need to add to this interface
$iface->{'gateway6'} = $gw;
&save_interface($iface);
}
elsif ($iface->{'fullname'} ne $dev && $iface->{'gateway6'}) {
# Need to remove from this interface
delete($iface->{'gateway6'});
&save_interface($iface);
}
}
}
# os_save_dns_config(&config)
# DNS servers are stored in the Network Manager config files
sub os_save_dns_config
{
my ($conf) = @_;
my @boot = &boot_interfaces();
my @fix = grep { $_->{'nameserver'} } @boot;
@fix = @boot if (!@fix);
foreach my $iface (@fix) {
$iface->{'nameserver'} = $conf->{'nameserver'};
$iface->{'search'} = $conf->{'domain'};
&save_interface($iface);
}
}
# read_nm_config(file)
# Reads an ini-format network manager config file
sub read_nm_config
{
my ($f) = @_;
my $lref = &read_file_lines($f, 1);
my @rv;
my $sect;
my $lnum = 0;
foreach my $l (@$lref) {
if ($l =~ /^\s*\[(\S+)\]/) {
# Start of a section
$sect = { 'sect' => $1,
'members' => [ ],
'file' => $f,
'line' => $lnum,
'eline' => $lnum };
push(@rv, $sect);
}
elsif ($l =~ /^\s*([^ =]+)\s*=\s*(.*)/ && $sect) {
# Variable in a section
push(@{$sect->{'members'}}, { 'name' => $1,
'value' => $2,
'file' => $f,
'line' => $lnum,
'eline' => $lnum });
$sect->{'eline'} = $lnum;
}
$lnum++;
}
return \@rv;
}
# find_nm_config(&config, section, name)
# Returns the value of a directive in some section, or undef
sub find_nm_config
{
my ($cfg, $sname, $name) = @_;
my ($sect) = grep { $_->{'sect'} eq $sname } @$cfg;
return undef if (!$sect);
my @dirs = grep { $_->{'name'} eq $name } @{$sect->{'members'}};
return wantarray ? map { $_->{'value'} } @dirs :
@dirs ? $dirs[0]->{'value'} : undef;
}
# save_nm_config(&config, section, name, value)
# Updates, creates or deletes a directive in some section
sub save_nm_config
{
my ($cfg, $sname, @nvlist) = @_;
my $uuid = &find_nm_config($cfg, "connection", "uuid");
$uuid || &error("No uuid found when setting $sname.$nvlist[0]");
my $cmd = "nmcli conn modify ".quotemeta($uuid);
while(@nvlist) {
my $name = shift(@nvlist);
my $value = shift(@nvlist);
if (ref($value)) {
$value = @$value ? join(",", @$value) : undef;
}
$cmd .= " ".quotemeta($sname).".".quotemeta($name);
if (defined($value)) {
$cmd .= " ".quotemeta($value);
}
else {
$cmd .= " \"\"";
}
}
my $out = &backquote_logged("$cmd 2>&1 </dev/null");
&error("$cmd failed : $out") if ($?);
}
# nm_interface_uuid(name)
# Returns the UUID for an interface, if there is one
sub nm_interface_uuid
{
my ($name) = @_;
my $out = &backquote_command("nmcli conn show 2>/dev/null");
foreach my $l (split(/\r?\n/, $out)) {
my @w = split(/\s+/, $l);
if ($w[@w-1] eq $name) {
return $w[@w-3];
}
}
return undef;
}
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