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|
#!/usr/bin/env perl
$|;
#-*- Mode: perl; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
# Internet Shares Configuration Launcher.
#
# Copyright (C) 2000-2001 Ximian, Inc.
#
# Authors: Kenneth Christiansen <kenneth@gnu.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
# Reads configuration data from:
# /etc/sysconfig/ishare/internet-share.cfg
# -- Global variables --#
my @echo;
my @modprobe;
my @ipchains;
# -- Parse data -- #
open CFGFILE, "/etc/sysconfig/ishare/internet-share.cfg";
my @xml_source = <CFGFILE>;
sub parse_head_tags # (array, endtag)
{
my ($xml_array) = @_;
my @xml_array = @{$xml_array};
while (@xml_array) {
my $line = $xml_array[0]; shift @xml_array;
## single start tags
## FIXME: Handle multiple lines
if ($line =~ /^[ \t]*<([\w-]+)([^>]*)?(\/)?>[ \t]*$/) {
&evaluate (\@xml_array, $1, $2);
}
}
}
sub parse_container_content # (array, endtag)
{
my ($xml_array, $endtag) = @_;
my @xml_array = @{$xml_array};
my %data = (); my $data;
while (@xml_array) {
my $line = $xml_array[0]; shift @xml_array;
## single tags
## FIXME: Handle multiple lines
if ($line =~ /^[ \t]*<(\w+)([^>]*)>([^<]*)<\/\1>[ \t]*$/) {
$data = "$3";
$data =~ s/.*='([^']*)'.*/$1/;
if ($data{$1} ne "") {
$data{$1} = "$data{$1}, $data";
} else {
$data{$1} = $data;
}
}
if ($line =~ /<\/$endtag>/) { last; }
}
return \%data;
}
sub evaluate # (xml_array, name, attributes, pcdata)
{
my ($xml_array, $name, $attr, $recur) = @_;
my @xml_array = @{$xml_array};
if ($name eq "quake") { &parse_modprobe (\@xml_array, "quake", $attr); }
if ($name eq "raudio") { &parse_modprobe (\@xml_array, "raudio", $attr); }
if ($name eq "ftp") { &parse_modprobe (\@xml_array, "ftp", $attr); }
if ($name eq "ip_forward") { &parse_echo ("ip_forward", $attr); }
if ($name eq "timeout") { &parse_timeout (\@xml_array); }
if ($name eq "forward") { &parse_forward (\@xml_array); }
}
sub parse_forward #
{
my ($xml_array) = @_;
my @xml_array = @{$xml_array};
my ($address, $option);
while (@xml_array) {
my $line = $xml_array[0]; shift @xml_array;
if ($line =~ /<\/formard>/) { last; }
if ($line =~ /<(ip_address) type='([^']*)'>([0-9.\/]*)<\/\1>/) {
$address = $3; $option = $2;
$option =~ s/(.*)/\U$1\E/;
push @ipchains, "/sbin/ipchains -A forward -s $address -j $option";
}
}
}
sub parse_echo #
{
my ($option, $attr) = @_;
$attr =~ s/.*state='([^']*)'.*/$1/;
$value = &parse_boolean ($attr);
push @echo, "echo \"$value\" > /proc/sys/net/ipv4/$option";
}
sub parse_timeout #
{
my ($xml_array) = @_;
my @xml_array = @{$xml_array};
my %time;
$time = &parse_container_content (\@xml_array, $module);
%time = %{$time};
push @ipchains, "/sbin/ipchains -M -S $time{tcp} $time{tcpfin} $time{udp}";
}
sub parse_modprobe # (xml_array, module, attr, recur)
{
my ($xml_array, $module, $attr) = @_;
my @xml_array = @{$xml_array};
my ($value, %ports);
$attr =~ s/.*state='([^']*)'.*/$1/;
$value = &parse_boolean ($attr);
$ports = &parse_container_content (\@xml_array, $module);
%ports = %{$ports};
push @modprobe, "/sbin/modprobe ip_masq_$module $ports{port}" if ($value == 1);
}
sub exec_from_array # (array)
{
my (@array) = @_;
foreach $command (@array) {
print "Execution $command\n";
system("$command");
}
}
sub parse_boolean # (string)
{
my ($string) = @_;
if ($string eq "true") {
return 1;
} else {
return 0;
}
}
# -- Main -- #
if ($ARGV[0] eq "") {
print "Usage: ishare {start|restart}\n"
}
if ($ARGV[0] eq "start" || $ARGV[0] eq "restart") {
&parse_head_tags (\@xml_source);
## execute in right order
&exec_from_array (@echo);
&exec_from_array (@modprobe);
&exec_from_array (@ipchains);
}
|
