PAL.C.T MINI SHELL
# slackware-linux-lib.pl
# Networking functions for slackware linux
# To support boot-time interfaces, ifconfig commands are added to rc.local so
# that additional virtual interfaces can be created
do 'linux-lib.pl';
%iconfig = &foreign_config("init");
$interfaces_file = $iconfig{'local_script'} || $iconfig{'extra_init'};
$rc_init = "/etc/rc.d/rc.inet1";
$dhcp_init = "/etc/rc.d/rc.dhcpd";
# boot_interfaces()
# Returns a list of interfaces brought up at boot time
sub boot_interfaces
{
local @rv;
# Look in rc.init1 file for master interface
local $iface = { 'up' => 1,
'edit' => 1,
'index' => 0,
'init' => 1,
'name' => 'eth0',
'fullname' => 'eth0',
'file' => $rc_init };
local $gotdevice;
&open_readfile(INIT, $rc_init);
while(<INIT>) {
s/\r|\n//g;
s/#.*$//;
if (/^\s*IPADDR\s*=\s*["']?([0-9\.]+)/) {
$iface->{'address'} = $1;
}
elsif (/^\s*DEVICE\s*=\s*["']?([0-9\.]+)/) {
$iface->{'name'} = $iface->{'fullname'} = $1;
$gotdevice++;
}
elsif (/^\s*NETMASK\s*=\s*["']?([0-9\.]+)/) {
$iface->{'netmask'} = $1;
}
elsif (/^\s*BROADCAST\s*=\s*["']?([0-9\.]+)/) {
$iface->{'broadcast'} = $1;
}
elsif (/^\s*DHCP\s*=\s*["']?([0-9\.]+)/) {
$iface->{'dhcp'} = ($1 eq "yes");
}
elsif (/^\s*ifconfig\s+(\S+)\s+.*IPADDR.*/ && !$gotdevice) {
$iface->{'name'} = $iface->{'fullname'} = $1;
}
}
close(INIT);
local @st1 = stat($rc_init);
local @st2 = stat($dhcp_init);
if ($st1[7] == $st2[7]) {
# Looks like rc.dhcpd script has been copied to rc.inet1 - assume DHCP
$iface->{'dhcp'} = 1;
}
push(@rv, $iface) if ($iface->{'address'} || $iface->{'dhcp'});
# Read extra init script for virtual interfaces
local $lnum = 0;
&open_readfile(IFACES, $interfaces_file);
while(<IFACES>) {
s/\r|\n//g;
if (/^(#*)\s*(\S*ifconfig)\s+(\S+)\s+(\S+)(\s+netmask\s+(\S+))?(\s+broadcast\s+(\S+))?(\s+mtu\s+(\d+))?\s+up$/) {
# Found a usable interface line
local $b = { 'fullname' => $3,
'up' => !$1,
'address' => $4,
'netmask' => $6,
'broadcast' => $8,
'mtu' => $10,
'edit' => 1,
'line' => $lnum,
'file' => $interfaces_file,
'index' => scalar(@rv) };
if ($b->{'fullname'} =~ /(\S+):(\d+)/) {
$b->{'name'} = $1;
$b->{'virtual'} = $2;
}
else {
$b->{'name'} = $b->{'fullname'};
}
push(@rv, $b);
}
$lnum++;
}
close(IFACES);
return @rv;
}
# save_interface(&details)
# Create or update a boot-time interface's ifconfig command
sub save_interface
{
if ($_[0]->{'index'} == 0 && $_[0]->{'fullname'} eq 'eth0') {
# Modifying the primary interface
&lock_file($rc_init);
if ($_[0]->{'dhcp'} && -r $dhcp_init) {
# Just copy rc.dhcpd to rc.inet1
&system_logged("cp $dhcp_init $rc_init");
}
else {
# Is the current file rc.dhcpd?
if (!$_[0]->{'dhcp'}) {
local @st1 = stat($rc_init);
local @st2 = stat($dhcp_init);
if ($st1[7] == $st2[7]) {
# Yes! Use built-in static IP version
&system_logged("cp $module_root_directory/rc.inet1 $rc_init");
}
}
# Update init script with new settings
local $lref = &read_file_lines($rc_init);
foreach $l (@$lref) {
if ($l =~ /^(\s*)IPADDR\s*=\s*(\S+)(.*)/) {
$l = $1."IPADDR=\"".$_[0]->{'address'}."\"".$3;
}
elsif ($l =~ /^(\s*)NETMASK\s*=\s*(\S+)(.*)/) {
$l = $1."NETMASK=\"".$_[0]->{'netmask'}."\"".$3;
}
elsif ($l =~ /^(\s*)BROADCAST\s*=\s*(\S+)(.*)/) {
$l = $1."BROADCAST=\"".$_[0]->{'broadcast'}."\"".$3;
}
if ($l =~ /^(\s*)DHCP\s*=\s*(\S+)(.*)/) {
$l = $1."DHCP=\"".($_[0]->{'dhcp'} ? "yes" : "no")."\"".$3;
}
}
&flush_file_lines();
}
&unlock_file($rc_init);
}
else {
# Modifying or adding some other interface
$_[0]->{'dhcp'} && &error($text{'bifc_edhcpmain'});
&lock_file($interfaces_file);
local $lref = &read_file_lines($interfaces_file);
local $lnum = defined($_[0]->{'line'}) ? $_[0]->{'line'}
: &interface_lnum($_[0]);
if (defined($lnum)) {
$lref->[$lnum] = &interface_line($_[0]);
}
else {
push(@$lref, &interface_line($_[0]));
}
&flush_file_lines();
&unlock_file($interfaces_file);
}
}
# delete_interface(&details)
# Delete a boot-time interface's ifconfig command
sub delete_interface
{
if ($_[0]->{'init'}) {
&error("The primary network interface cannot be deleted");
}
else {
&lock_file($interfaces_file);
local $lref = &read_file_lines($interfaces_file);
local $lnum = defined($_[0]->{'line'}) ? $_[0]->{'line'}
: &interface_lnum($_[0]);
if (defined($lnum)) {
splice(@$lref, $lnum, 1);
}
&flush_file_lines();
&unlock_file($interfaces_file);
}
}
sub interface_lnum
{
local @boot = &boot_interfaces();
local ($found) = grep { $_->{'fullname'} eq $_[0]->{'fullname'} } @boot;
return $found ? $found->{'line'} : undef;
}
sub interface_line
{
local $str;
$str .= "# " if (!$_[0]->{'up'});
$str .= &has_command("ifconfig");
if (!$_[0]->{'fullname'}) {
$_[0]->{'fullname'} = $_[0]->{'virtual'} ne "" ?
$_[0]->{'name'}.":".$_[0]->{'virtual'} : $_[0]->{'name'};
}
$str .= " $_[0]->{'fullname'} $_[0]->{'address'}";
if ($_[0]->{'netmask'}) {
$str .= " netmask $_[0]->{'netmask'}";
}
if ($_[0]->{'broadcast'}) {
$str .= " broadcast $_[0]->{'broadcast'}";
}
if ($_[0]->{'mtu'}) {
$str .= " mtu $_[0]->{'mtu'}";
}
$str .= " up";
return $str;
}
# can_edit(what)
# Can some boot-time interface parameter be edited?
sub can_edit
{
return $_[0] ne "bootp";
}
sub can_broadcast_def
{
return 0;
}
# valid_boot_address(address)
# Is some address valid for a bootup interface
sub valid_boot_address
{
return &check_ipaddress($_[0]);
}
# get_hostname()
sub get_hostname
{
local $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
{
&system_logged("hostname $_[0] >/dev/null 2>&1");
&open_lock_tempfile(HOST, ">/etc/HOSTNAME");
&print_tempfile(HOST, $_[0],"\n");
&close_tempfile(HOST);
undef(@main::get_system_hostname); # clear cache
}
sub routing_config_files
{
return ( $rc_init );
}
sub routing_input
{
&open_readfile(INIT, $rc_init);
while(<INIT>) {
s/\r|\n//g;
s/#.*$//;
if (/^\s*GATEWAY\s*=\s*["']?([0-9\.]+)/) {
$gw = $1;
}
}
close(INIT);
print &ui_table_row($text{'routes_default'},
&ui_opt_textbox("gw", $gw, 20, $text{'routes_none'},
$text{'routes_gateway'}));
}
sub parse_routing
{
local $gw = "";
if (!$in{'gw_def'}) {
&check_ipaddress($in{'gw'}) ||
&error(&text('routes_edefault', &html_escape($in{'gw'})));
$gw = $in{'gw'};
}
&lock_file($rc_init);
local $lref = &read_file_lines($rc_init);
foreach $l (@$lref) {
if ($l =~ /^(\s*)GATEWAY\s*=\s*(\S+)(.*)/) {
$l = $1."GATEWAY=\"".$gw."\"".$3;
}
}
&flush_file_lines();
&unlock_file($rc_init);
}
# supports_address6([&iface])
# Returns 1 if managing IPv6 interfaces is supported
sub supports_address6
{
local ($iface) = @_;
return 0;
}
1;
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