#!/usr/bin/perl -w
#
# Script for configuring linux 2.6.x IPSEC 
#
# Copyright 2004 Matthew Grant, Catalyst IT Ltd, GPL2
#

# Loads and unloads all modules needed for IPSEC

# Writes configuration files for racoon

# Administers SPD in kernel using setkey program

# Basically imitates Free S/WAN without all the kludgy garbage...

# We are only dealing with IP addresses
use integer;

sub mod_ls ();
sub mod_load ($);
sub mod_unload ($);
sub usage ();
sub mod_start();
sub mod_stop();
sub sad_flush();
sub spd_flush();
sub parse_config();
sub ipsec_start();
sub ipsec_stop();
sub ipsec_load();
sub spd_show();
sub sad_show();
sub parse_spd(\@\%);
sub conn_dump_list();
sub peer_dump_list();
sub global_dump_list();
sub spd_dump_list(\@\%);
sub prog_warn($$;$);
sub prog_die($;$);
sub match_spd_connection(\@\%);
sub conn_down_handle($);
sub conn_down (\@\%$;$$);
sub conn_list($);
sub log_backend();
sub conn_up_handle($);
sub conn_menu($);
sub racoon_write_config($$);
sub racoon_configure(;$);
sub prop_get_indexes (\%);
sub prop_store_index (\%$);
sub conn_reload_handle($);
sub check_if_running ();
sub racoon_start();
sub racoon_stop();
sub basename($$);
sub dirname($);
sub openlog($$$);
sub syslog($$);

if ($^O =~ /linux/i ) {
	$proc_modules = "/proc/modules";
	$kver = `uname -r`; chomp $kver;
	$modpath = "/lib/modules/" . $kver;
	$modpath_ipsec = "$modpath/kernel/net/ipv4";
	$modpath_ipsec6 = "$modpath/kernel/net/ipv6";
	$modpath_xfrm = "$modpath/kernel/net/xfrm";
	$modpath_key = "$modpath/kernel/net/key";
	$modpath_crypto = "$modpath/kernel/crypto";
	$modpath_zlib = "$modpath/kernel/lib/zlib_deflate";
	$modext = ( $kver =~ /^2\.6\.|^3\./ ? ".ko" : ".o" );
	$proc_ipv4 = "/proc/sys/net/ipv4";
	$proc_ipv6 = "/proc/sys/net/ipv6";
} # endif linux


if ($^O =~ /linux|gnukfreebsd/i) {
	$setkey_cmd = "/usr/sbin/setkey";
	$confdir = "/etc/racoon";
	$vardir = "/var/lib/racoon";
	$conffile = "${confdir}/racoon-tool.conf";
	$conffiledir = "${confdir}/racoon-tool.conf.d";
	$racoon_cmd = "/usr/sbin/racoon";
	$less_cmd = "/usr/bin/less"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         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