forked from extern/shorewall_code
82ee58eaaa
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8935 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
2251 lines
59 KiB
Perl
2251 lines
59 KiB
Perl
#
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# Shorewall-perl 4.2 -- /usr/share/shorewall-perl/Shorewall/Config.pm
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#
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# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
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#
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# (c) 2007,2008 - Tom Eastep (teastep@shorewall.net)
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#
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# Complete documentation is available at http://shorewall.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of Version 2 of the GNU General Public License
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# This module is responsible for lower level configuration file handling.
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# It also exports functions for generating warning and error messages.
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# The get_configuration function parses the shorewall.conf, capabilities and
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# modules files during compiler startup. The module also provides the basic
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# output file services such as creation of temporary 'object' files, writing
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# into those files (emitters) and finalizing those files (renaming
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# them to their final name and setting their mode appropriately).
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#
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package Shorewall::Config;
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use strict;
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use warnings;
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use File::Basename;
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use File::Temp qw/ tempfile tempdir /;
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use Cwd qw(abs_path getcwd);
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use autouse 'Carp' => qw(longmess confess);
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use Scalar::Util 'reftype';
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our @ISA = qw(Exporter);
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#
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# Imported variables should be treated as read-only by importers
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#
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our @EXPORT = qw(
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warning_message
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fatal_error
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progress_message
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progress_message2
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progress_message3
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);
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our @EXPORT_OK = qw( $shorewall_dir initialize read_a_line1 set_config_path shorewall);
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our %EXPORT_TAGS = ( internal => [ qw( create_temp_object
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finalize_object
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numeric_value
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numeric_value1
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in_hex
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in_hex2
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in_hex3
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in_hex4
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in_hex8
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emit
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emit_unindented
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save_progress_message
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save_progress_message_short
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set_timestamp
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set_verbose
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set_log
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close_log
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set_command
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push_indent
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pop_indent
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copy
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create_temp_aux_config
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finalize_aux_config
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set_shorewall_dir
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set_debug
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find_file
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split_list
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split_line
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split_line1
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first_entry
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open_file
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close_file
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push_open
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pop_open
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read_a_line
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validate_level
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qt
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ensure_config_path
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get_configuration
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require_capability
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report_capabilities
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propagateconfig
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append_file
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run_user_exit
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run_user_exit1
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run_user_exit2
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generate_aux_config
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$command
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$doing
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$done
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$currentline
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%config
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%globals
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%capabilities
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MIN_VERBOSITY
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MAX_VERBOSITY
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) ] );
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Exporter::export_ok_tags('internal');
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our $VERSION = 4.2.0;
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#
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# describe the current command, it's present progressive, and it's completion.
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#
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our ($command, $doing, $done );
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#
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# VERBOSITY
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#
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our $verbose;
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#
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# Logging
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#
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our ( $log, $log_verbose );
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#
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# Timestamp each progress message, if true.
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#
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our $timestamp;
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#
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# Object file handle
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#
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our $object;
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#
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# True, if last line emitted is blank
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#
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our $lastlineblank;
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#
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# Number of columns to indent the output
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#
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our $indent;
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#
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# Object's Directory and File
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#
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our ( $dir, $file );
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#
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# Temporary output file's name
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#
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our $tempfile;
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#
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# Misc Globals
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#
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our %globals;
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#
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# From shorewall.conf file
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#
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our %config;
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#
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# Config options and global settings that are to be copied to object script
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#
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our @propagateconfig = qw/ DISABLE_IPV6 MODULESDIR MODULE_SUFFIX LOGFORMAT SUBSYSLOCK LOCKFILE /;
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our @propagateenv = qw/ LOGLIMIT LOGTAGONLY LOGRULENUMBERS /;
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#
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# From parsing the capabilities file
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#
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our %capabilities;
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#
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# Capabilities
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#
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our %capdesc = ( NAT_ENABLED => 'NAT',
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MANGLE_ENABLED => 'Packet Mangling',
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MULTIPORT => 'Multi-port Match' ,
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XMULTIPORT => 'Extended Multi-port Match',
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CONNTRACK_MATCH => 'Connection Tracking Match',
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OLD_CONNTRACK_MATCH =>
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'Old conntrack match syntax',
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NEW_CONNTRACK_MATCH =>
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'Extended Connection Tracking Match',
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USEPKTTYPE => 'Packet Type Match',
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POLICY_MATCH => 'Policy Match',
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PHYSDEV_MATCH => 'Physdev Match',
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PHYSDEV_BRIDGE => 'Physdev-is-bridged support',
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LENGTH_MATCH => 'Packet length Match',
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IPRANGE_MATCH => 'IP Range Match',
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RECENT_MATCH => 'Recent Match',
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OWNER_MATCH => 'Owner Match',
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IPSET_MATCH => 'Ipset Match',
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CONNMARK => 'CONNMARK Target',
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XCONNMARK => 'Extended CONNMARK Target',
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CONNMARK_MATCH => 'Connmark Match',
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XCONNMARK_MATCH => 'Extended Connmark Match',
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RAW_TABLE => 'Raw Table',
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IPP2P_MATCH => 'IPP2P Match',
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CLASSIFY_TARGET => 'CLASSIFY Target',
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ENHANCED_REJECT => 'Extended Reject',
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KLUDGEFREE => 'Repeat match',
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MARK => 'MARK Target',
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XMARK => 'Extended Mark Target',
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MANGLE_FORWARD => 'Mangle FORWARD Chain',
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COMMENTS => 'Comments',
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ADDRTYPE => 'Address Type Match',
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TCPMSS_MATCH => 'TCPMSS Match',
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HASHLIMIT_MATCH => 'Hashlimit Match',
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NFQUEUE_TARGET => 'NFQUEUE Target',
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REALM_MATCH => 'Realm Match',
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HELPER_MATCH => 'Helper Match',
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CONNLIMIT_MATCH => 'Connlimit Match',
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TIME_MATCH => 'Time Match',
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GOTO_TARGET => 'Goto Support',
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CAPVERSION => 'Capability Version',
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);
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#
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# Directories to search for configuration files
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#
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our @config_path;
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#
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# Stash away file references here when we encounter INCLUDE
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#
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our @includestack;
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#
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# Allow nested opens
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#
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our @openstack;
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our $currentline; # Current config file line image
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our $currentfile; # File handle reference
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our $currentfilename; # File NAME
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our $currentlinenumber; # Line number
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our $scriptfile; # File Handle Reference to current temporary file being written by an in-line Perl script
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our $scriptfilename; # Name of that file.
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our @tempfiles; # Files that need unlinking at END
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our $first_entry; # Message to output or function to call on first non-blank line of a file
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our $shorewall_dir; # Shorewall Directory
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our $debug; # If true, use Carp to report errors with stack trace.
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use constant { MIN_VERBOSITY => -1,
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MAX_VERBOSITY => 2 };
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#
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# Initialize globals -- we take this novel approach to globals initialization to allow
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# the compiler to run multiple times in the same process. The
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# initialize() function does globals initialization for this
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# module and is called from an INIT block below. The function is
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# also called by Shorewall::Compiler::compiler at the beginning of
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# the second and subsequent calls to that function.
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#
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sub initialize() {
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( $command, $doing, $done ) = qw/ compile Compiling Compiled/; #describe the current command, it's present progressive, and it's completion.
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$verbose = 0; # Verbosity setting. 0 = almost silent, 1 = major progress messages only, 2 = all progress messages (very noisy)
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$log = undef; # File reference for log file
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$log_verbose = -1; # Verbosity of log.
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$timestamp = ''; # If true, we are to timestamp each progress message
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$object = 0; # Object (script) file Handle Reference
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$lastlineblank = 0; # Avoid extra blank lines in the output
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$indent = ''; # Current indentation
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( $dir, $file ) = ('',''); # Object's Directory and File
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$tempfile = ''; # Temporary File Name
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#
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# Misc Globals
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#
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%globals = ( SHAREDIR => '/usr/share/shorewall' ,
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CONFDIR => '/etc/shorewall',
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SHAREDIRPL => '/usr/share/shorewall-perl/',
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ORIGINAL_POLICY_MATCH => '',
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LOGPARMS => '',
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TC_SCRIPT => '',
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EXPORT => 0,
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VERSION => "4.2.3",
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CAPVERSION => 40203 ,
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);
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#
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# From shorewall.conf file
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#
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%config =
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( STARTUP_ENABLED => undef,
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VERBOSITY => undef,
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#
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# Logging
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#
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LOGFILE => undef,
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LOGFORMAT => undef,
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LOGTAGONLY => undef,
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LOGRATE => undef,
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LOGBURST => undef,
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LOGALLNEW => undef,
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BLACKLIST_LOGLEVEL => undef,
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MACLIST_LOG_LEVEL => undef,
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TCP_FLAGS_LOG_LEVEL => undef,
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RFC1918_LOG_LEVEL => undef,
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SMURF_LOG_LEVEL => undef,
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LOG_MARTIANS => undef,
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LOG_VERBOSITY => undef,
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STARTUP_LOG => undef,
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#
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# Location of Files
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#
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IPTABLES => undef,
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#
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#PATH is inherited
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#
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PATH => undef,
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SHOREWALL_SHELL => undef,
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SUBSYSLOCK => undef,
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MODULESDIR => undef,
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#
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#CONFIG_PATH is inherited
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#
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CONFIG_PATH => undef,
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RESTOREFILE => undef,
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IPSECFILE => undef,
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LOCKFILE => undef,
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#
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# Default Actions/Macros
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#
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DROP_DEFAULT => undef,
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REJECT_DEFAULT => undef,
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ACCEPT_DEFAULT => undef,
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QUEUE_DEFAULT => undef,
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NFQUEUE_DEFAULT => undef,
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#
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# RSH/RCP Commands
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#
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RSH_COMMAND => undef,
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RCP_COMMAND => undef,
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#
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# Firewall Options
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#
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BRIDGING => undef,
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IP_FORWARDING => undef,
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ADD_IP_ALIASES => undef,
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ADD_SNAT_ALIASES => undef,
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RETAIN_ALIASES => undef,
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TC_ENABLED => undef,
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TC_EXPERT => undef,
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CLEAR_TC => undef,
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MARK_IN_FORWARD_CHAIN => undef,
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CLAMPMSS => undef,
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ROUTE_FILTER => undef,
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DETECT_DNAT_IPADDRS => undef,
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MUTEX_TIMEOUT => undef,
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ADMINISABSENTMINDED => undef,
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BLACKLISTNEWONLY => undef,
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DELAYBLACKLISTLOAD => undef,
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MODULE_SUFFIX => undef,
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DISABLE_IPV6 => undef,
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DYNAMIC_ZONES => undef,
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PKTTYPE=> undef,
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RFC1918_STRICT => undef,
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MACLIST_TABLE => undef,
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MACLIST_TTL => undef,
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SAVE_IPSETS => undef,
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MAPOLDACTIONS => undef,
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FASTACCEPT => undef,
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IMPLICIT_CONTINUE => undef,
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HIGH_ROUTE_MARKS => undef,
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USE_ACTIONS=> undef,
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OPTIMIZE => undef,
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EXPORTPARAMS => undef,
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SHOREWALL_COMPILER => undef,
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EXPAND_POLICIES => undef,
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KEEP_RT_TABLES => undef,
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DELETE_THEN_ADD => undef,
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MULTICAST => undef,
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DONT_LOAD => '',
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AUTO_COMMENT => undef ,
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MANGLE_ENABLED => undef ,
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NULL_ROUTE_RFC1918 => undef ,
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USE_DEFAULT_RT => undef ,
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#
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# Packet Disposition
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#
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MACLIST_DISPOSITION => undef,
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TCP_FLAGS_DISPOSITION => undef,
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BLACKLIST_DISPOSITION => undef,
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);
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#
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# From parsing the capabilities file
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#
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%capabilities =
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( NAT_ENABLED => undef,
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MANGLE_ENABLED => undef,
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MULTIPORT => undef,
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XMULTIPORT => undef,
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CONNTRACK_MATCH => undef,
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NEW_CONNTRACK_MATCH => undef,
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OLD_CONNTRACK_MATCH => undef,
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USEPKTTYPE => undef,
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POLICY_MATCH => undef,
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PHYSDEV_MATCH => undef,
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PHYSDEV_BRIDGE => undef,
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LENGTH_MATCH => undef,
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IPRANGE_MATCH => undef,
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RECENT_MATCH => undef,
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OWNER_MATCH => undef,
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IPSET_MATCH => undef,
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CONNMARK => undef,
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XCONNMARK => undef,
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CONNMARK_MATCH => undef,
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XCONNMARK_MATCH => undef,
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RAW_TABLE => undef,
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IPP2P_MATCH => undef,
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CLASSIFY_TARGET => undef,
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ENHANCED_REJECT => undef,
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KLUDGEFREE => undef,
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MARK => undef,
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XMARK => undef,
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MANGLE_FORWARD => undef,
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COMMENTS => undef,
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ADDRTYPE => undef,
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TCPMSS_MATCH => undef,
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HASHLIMIT_MATCH => undef,
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NFQUEUE_TARGET => undef,
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REALM_MATCH => undef,
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HELPER_MATCH => undef,
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CONNLIMIT_MATCH => undef,
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TIME_MATCH => undef,
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GOTO_TARGET => undef,
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CAPVERSION => undef,
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);
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#
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# Directories to search for configuration files
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#
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@config_path = ();
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#
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# Stash away file references here when we encounter INCLUDE
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#
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@includestack = ();
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#
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# Allow nested opens
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#
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@openstack = ();
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$currentline = ''; # Line image
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$currentfile = undef; # File handle reference
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$currentfilename = ''; # File NAME
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$currentlinenumber = 0; # Line number
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$first_entry = 0; # Message to output or function to call on first non-blank file entry
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$shorewall_dir = ''; #Shorewall Directory
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$debug = 0;
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}
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INIT {
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initialize;
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#
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# These variables appear within single quotes in shorewall.conf -- add them to ENV
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# so that read_a_line doesn't have to be smart enough to parse that usage.
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#
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for ( qw/root system command files destination/ ) {
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$ENV{$_} = '' unless exists $ENV{$_};
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}
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}
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my @abbr = qw( Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec );
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#
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# Issue a Warning Message
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#
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sub warning_message
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{
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my $linenumber = $currentlinenumber || 1;
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my $currentlineinfo = $currentfile ? " : $currentfilename (line $linenumber)" : '';
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our @localtime;
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$| = 1;
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if ( $log ) {
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@localtime = localtime;
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printf $log '%s %2d %02d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
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}
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if ( $debug ) {
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print STDERR longmess( " WARNING: @_$currentlineinfo" );
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print $log longmess( " WARNING: @_$currentlineinfo\n" ) if $log;
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} else {
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print STDERR " WARNING: @_$currentlineinfo\n";
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print $log " WARNING: @_$currentlineinfo\n" if $log;
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}
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$| = 0;
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}
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#
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# Issue fatal error message and die
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#
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sub fatal_error {
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my $linenumber = $currentlinenumber || 1;
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my $currentlineinfo = $currentfile ? " : $currentfilename (line $linenumber)" : '';
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$| = 1;
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if ( $log ) {
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our @localtime = localtime;
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printf $log '%s %2d %02d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
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if ( $debug ) {
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print $log longmess( " ERROR: @_$currentlineinfo\n" );
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} else {
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print $log " ERROR: @_$currentlineinfo\n";
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}
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close $log;
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$log = undef;
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}
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confess " ERROR: @_$currentlineinfo" if $debug;
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die " ERROR: @_$currentlineinfo\n";
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}
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sub fatal_error1 {
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$| = 1;
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if ( $log ) {
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our @localtime = localtime;
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printf $log '%s %2d %02d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
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if ( $debug ) {
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print $log longmess( " ERROR: @_\n" );
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} else {
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print $log " ERROR: @_\n";
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}
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close $log;
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$log = undef;
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}
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confess " ERROR: @_" if $debug;
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die " ERROR: @_\n";
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}
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#
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# Convert value to decimal number
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#
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sub numeric_value ( $ ) {
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my $mark = lc $_[0];
|
|
return undef unless $mark =~ /^-?(0x[a-f0-9]+|0[0-7]*|[1-9]\d*)$/;
|
|
$mark =~ /^0/ ? oct $mark : $mark;
|
|
}
|
|
|
|
sub numeric_value1 ( $ ) {
|
|
my $val = numeric_value $_[0];
|
|
fatal_error "Invalid Number ($_[0])" unless defined $val;
|
|
$val;
|
|
}
|
|
|
|
#
|
|
# Return the argument expressed in Hex
|
|
#
|
|
sub in_hex( $ ) {
|
|
sprintf '0x%x', $_[0];
|
|
}
|
|
|
|
sub in_hex2( $ ) {
|
|
sprintf '0x%02x', $_[0];
|
|
}
|
|
|
|
sub in_hex3( $ ) {
|
|
sprintf '0x%03x', $_[0];
|
|
}
|
|
|
|
sub in_hex4( $ ) {
|
|
sprintf '0x%04x', $_[0];
|
|
}
|
|
|
|
sub in_hex8( $ ) {
|
|
sprintf '0x%08x', $_[0];
|
|
}
|
|
|
|
#
|
|
# Write the arguments to the object file (if any) with the current indentation.
|
|
#
|
|
# Replaces leading spaces with tabs as appropriate and suppresses consecutive blank lines.
|
|
#
|
|
sub emit {
|
|
if ( $object ) {
|
|
#
|
|
# 'compile' as opposed to 'check'
|
|
#
|
|
for ( @_ ) {
|
|
unless ( /^\s*$/ ) {
|
|
my $line = $_; # This copy is necessary because the actual arguments are almost always read-only.
|
|
$line =~ s/^\n// if $lastlineblank;
|
|
$line =~ s/^/$indent/gm if $indent;
|
|
$line =~ s/ /\t/gm;
|
|
print $object "$line\n";
|
|
$lastlineblank = ( substr( $line, -1, 1 ) eq "\n" );
|
|
} else {
|
|
print $object "\n" unless $lastlineblank;
|
|
$lastlineblank = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Write passed message to the object with newline but no indentation.
|
|
#
|
|
sub emit_unindented( $ ) {
|
|
print $object "$_[0]\n" if $object;
|
|
}
|
|
|
|
#
|
|
# Write a progress_message2 command with surrounding blank lines to the output file.
|
|
#
|
|
sub save_progress_message( $ ) {
|
|
emit "\nprogress_message2 @_\n" if $object;
|
|
}
|
|
|
|
#
|
|
# Write a progress_message command to the output file.
|
|
#
|
|
sub save_progress_message_short( $ ) {
|
|
emit "progress_message $_[0]" if $object;
|
|
}
|
|
|
|
#
|
|
# Set $timestamp
|
|
#
|
|
sub set_timestamp( $ ) {
|
|
$timestamp = shift;
|
|
}
|
|
|
|
#
|
|
# Set $verbose
|
|
#
|
|
sub set_verbose( $ ) {
|
|
$verbose = shift;
|
|
}
|
|
|
|
#
|
|
# Set $log and $log_verbose
|
|
#
|
|
sub set_log ( $$ ) {
|
|
my ( $l, $v ) = @_;
|
|
|
|
if ( defined $v ) {
|
|
my $value = numeric_value( $v );
|
|
fatal_error "Invalid Log Verbosity ( $v )" unless defined($value) && ( $value >= -1 ) && ( $value <= 2);
|
|
$log_verbose = $value;
|
|
}
|
|
|
|
if ( $l && $log_verbose >= 0 ) {
|
|
unless ( open $log , '>>' , $l ) {
|
|
$log = undef;
|
|
fatal_error "Unable to open STARTUP_LOG ($l) for writing: $!";
|
|
}
|
|
} else {
|
|
$log_verbose = -1;
|
|
}
|
|
}
|
|
|
|
sub close_log() {
|
|
close $log, $log = undef if $log;
|
|
}
|
|
|
|
#
|
|
# Set $command, $doing and $done
|
|
#
|
|
sub set_command( $$$ ) {
|
|
($command, $doing, $done) = @_;
|
|
}
|
|
|
|
#
|
|
# Print the current TOD to STDOUT.
|
|
#
|
|
sub timestamp() {
|
|
our @localtime = localtime;
|
|
printf '%02d:%02d:%02d ', @localtime[2,1,0];
|
|
}
|
|
|
|
#
|
|
# Write a message if $verbose >= 2
|
|
#
|
|
sub progress_message {
|
|
my $havelocaltime = 0;
|
|
|
|
if ( $verbose > 1 ) {
|
|
timestamp, $havelocaltime = 1 if $timestamp;
|
|
#
|
|
# We use this function to display messages containing raw config file images which may contains tabs (including multiple tabs in succession).
|
|
# The following makes such messages look more readable and uniform
|
|
#
|
|
my $line = "@_";
|
|
$line =~ s/\s+/ /g;
|
|
print "$line\n";
|
|
}
|
|
|
|
if ( $log_verbose > 1 ) {
|
|
our @localtime;
|
|
|
|
@localtime = localtime unless $havelocaltime;
|
|
|
|
printf $log '%s %2d %2d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
|
|
my $line = "@_";
|
|
$line =~ s/\s+/ /g;
|
|
print $log "$line\n";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Write a message if $verbose >= 1
|
|
#
|
|
sub progress_message2 {
|
|
my $havelocaltime = 0;
|
|
|
|
if ( $verbose > 0 ) {
|
|
timestamp, $havelocaltime = 1 if $timestamp;
|
|
print "@_\n";
|
|
}
|
|
|
|
if ( $log_verbose > 0 ) {
|
|
our @localtime;
|
|
|
|
@localtime = localtime unless $havelocaltime;
|
|
|
|
printf $log '%s %2d %02d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
|
|
print $log "@_\n";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Write a message if $verbose >= 0
|
|
#
|
|
sub progress_message3 {
|
|
my $havelocaltime = 0;
|
|
|
|
if ( $verbose >= 0 ) {
|
|
timestamp, $havelocaltime = 1 if $timestamp;
|
|
print "@_\n";
|
|
}
|
|
|
|
if ( $log_verbose >= 0 ) {
|
|
our @localtime;
|
|
|
|
@localtime = localtime unless $havelocaltime;
|
|
|
|
printf $log '%s %2d %02d:%02d:%02d ', $abbr[$localtime[4]], @localtime[3,2,1,0];
|
|
print $log "@_\n";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Push/Pop Indent
|
|
#
|
|
sub push_indent() {
|
|
$indent = "$indent ";
|
|
}
|
|
|
|
sub pop_indent() {
|
|
$indent = substr( $indent , 0 , ( length $indent ) - 4 );
|
|
}
|
|
|
|
#
|
|
# Functions for copying files into the object
|
|
#
|
|
sub copy( $ ) {
|
|
if ( $object ) {
|
|
my $file = $_[0];
|
|
|
|
open IF , $file or fatal_error "Unable to open $file: $!";
|
|
|
|
while ( <IF> ) {
|
|
chomp;
|
|
if ( /^\s*$/ ) {
|
|
print $object "\n" unless $lastlineblank;
|
|
$lastlineblank = 1;
|
|
} else {
|
|
s/^/$indent/ if $indent;
|
|
print $object $_;
|
|
print $object "\n";
|
|
$lastlineblank = 0;
|
|
}
|
|
}
|
|
|
|
close IF;
|
|
}
|
|
}
|
|
|
|
#
|
|
# This one handles line continuation.
|
|
|
|
sub copy1( $ ) {
|
|
if ( $object ) {
|
|
my $file = $_[0];
|
|
|
|
open IF , $file or fatal_error "Unable to open $file: $!";
|
|
|
|
my $do_indent = 1;
|
|
|
|
while ( <IF> ) {
|
|
chomp;
|
|
if ( /^\s*$/ ) {
|
|
print $object "\n";
|
|
$do_indent = 1;
|
|
next;
|
|
}
|
|
|
|
s/^/$indent/ if $indent && $do_indent;
|
|
print $object $_;
|
|
print $object "\n";
|
|
$do_indent = ! ( /\\$/ );
|
|
}
|
|
|
|
close IF;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Create the temporary object file -- the passed file name is the name of the final file.
|
|
# We create a temporary file in the same directory so that we can use rename to finalize it.
|
|
#
|
|
sub create_temp_object( $ ) {
|
|
my $objectfile = $_[0];
|
|
my $suffix;
|
|
|
|
eval {
|
|
( $file, $dir, $suffix ) = fileparse( $objectfile );
|
|
};
|
|
|
|
die if $@;
|
|
|
|
fatal_error "$dir is a Symbolic Link" if -l $dir;
|
|
fatal_error "Directory $dir does not exist" unless -d _;
|
|
fatal_error "Directory $dir is not writable" unless -w _;
|
|
fatal_error "$objectfile is a Symbolic Link" if -l $objectfile;
|
|
fatal_error "$objectfile is a Directory" if -d _;
|
|
fatal_error "$objectfile exists and is not a compiled script" if -e _ && ! -x _;
|
|
fatal_error "A compiled script may not be named 'shorewall'" if "$file" eq 'shorewall' && $suffix eq '';
|
|
|
|
eval {
|
|
$dir = abs_path $dir;
|
|
( $object, $tempfile ) = tempfile ( 'tempfileXXXX' , DIR => $dir );
|
|
};
|
|
|
|
fatal_error "Unable to create temporary file in directory $dir" if $@;
|
|
|
|
$file = "$file.$suffix" if $suffix;
|
|
$dir .= '/' unless substr( $dir, -1, 1 ) eq '/';
|
|
$file = $dir . $file;
|
|
|
|
}
|
|
|
|
#
|
|
# Finalize the object file
|
|
#
|
|
sub finalize_object( $ ) {
|
|
my $export = $_[0];
|
|
close $object;
|
|
$object = 0;
|
|
rename $tempfile, $file or fatal_error "Cannot Rename $tempfile to $file: $!";
|
|
chmod 0700, $file or fatal_error "Cannot secure $file for execute access";
|
|
progress_message3 "Shorewall configuration compiled to $file" unless $export;
|
|
}
|
|
|
|
#
|
|
# Create the temporary aux config file.
|
|
#
|
|
sub create_temp_aux_config() {
|
|
eval {
|
|
( $object, $tempfile ) = tempfile ( 'tempfileXXXX' , DIR => $dir );
|
|
};
|
|
|
|
die if $@;
|
|
|
|
}
|
|
|
|
#
|
|
# Finalize the aux config file.
|
|
#
|
|
sub finalize_aux_config() {
|
|
close $object;
|
|
$object = 0;
|
|
rename $tempfile, "$file.conf" or fatal_error "Cannot Rename $tempfile to $file.conf: $!";
|
|
progress_message3 "Shorewall configuration compiled to $file";
|
|
}
|
|
|
|
#
|
|
# Set $config{CONFIG_PATH}
|
|
#
|
|
sub set_config_path( $ ) {
|
|
$config{CONFIG_PATH} = shift;
|
|
}
|
|
|
|
#
|
|
# Set $debug
|
|
#
|
|
sub set_debug( $ ) {
|
|
$debug = shift;
|
|
}
|
|
|
|
#
|
|
# Search the CONFIG_PATH for the passed file
|
|
#
|
|
sub find_file($)
|
|
{
|
|
my $filename=$_[0];
|
|
|
|
return $filename if $filename =~ '/';
|
|
|
|
my $directory;
|
|
|
|
for $directory ( @config_path ) {
|
|
my $file = "$directory$filename";
|
|
return $file if -f $file;
|
|
}
|
|
|
|
"$globals{CONFDIR}/$filename";
|
|
}
|
|
|
|
sub split_list( $$ ) {
|
|
my ($list, $type ) = @_;
|
|
|
|
fatal_error "Invalid $type list ($list)" if $list =~ /^,|,$|,,|!,|,!$/;
|
|
|
|
split /,/, $list;
|
|
}
|
|
|
|
#
|
|
# Pre-process a line from a configuration file.
|
|
|
|
# ensure that it has an appropriate number of columns.
|
|
# supply '-' in omitted trailing columns.
|
|
#
|
|
sub split_line( $$$ ) {
|
|
my ( $mincolumns, $maxcolumns, $description ) = @_;
|
|
|
|
fatal_error "Shorewall Configuration file entries may not contain single quotes, double quotes, single back quotes or backslashes" if $currentline =~ /["'`\\]/;
|
|
fatal_error "Non-ASCII gunk in file" if $currentline =~ /[^\s[:print:]]/;
|
|
|
|
my @line = split( ' ', $currentline );
|
|
|
|
my $line = @line;
|
|
|
|
fatal_error "Invalid $description entry (too many columns)" if $line > $maxcolumns;
|
|
|
|
$line-- while $line > 0 && $line[$line-1] eq '-';
|
|
|
|
fatal_error "Invalid $description entry (too few columns)" if $line < $mincolumns;
|
|
|
|
push @line, '-' while @line < $maxcolumns;
|
|
|
|
@line;
|
|
}
|
|
|
|
#
|
|
# Version of 'split_line' used on files with exceptions
|
|
#
|
|
sub split_line1( $$$;$ ) {
|
|
my ( $mincolumns, $maxcolumns, $description, $nopad) = @_;
|
|
|
|
fatal_error "Shorewall Configuration file entries may not contain double quotes, single back quotes or backslashes" if $currentline =~ /["`\\]/;
|
|
|
|
my @line = split( ' ', $currentline );
|
|
|
|
$nopad = { COMMENT => 0 } unless $nopad;
|
|
|
|
my $first = $line[0];
|
|
my $columns = $nopad->{$first};
|
|
|
|
if ( defined $columns ) {
|
|
fatal_error "Invalid $first entry" if $columns && @line != $columns;
|
|
return @line
|
|
}
|
|
|
|
fatal_error "Shorewall Configuration file entries may not contain single quotes" if $currentline =~ /'/;
|
|
|
|
my $line = @line;
|
|
|
|
fatal_error "Invalid $description entry (too many columns)" if $line > $maxcolumns;
|
|
|
|
$line-- while $line > 0 && $line[$line-1] eq '-';
|
|
|
|
fatal_error "Invalid $description entry (too few columns)" if $line < $mincolumns;
|
|
|
|
push @line, '-' while @line < $maxcolumns;
|
|
|
|
@line;
|
|
}
|
|
|
|
#
|
|
# Open a file, setting $currentfile. Returns the file's absolute pathname if the file
|
|
# exists, is non-empty and was successfully opened. Terminates with a fatal error
|
|
# if the file exists, is non-empty, but the open fails.
|
|
#
|
|
sub do_open_file( $ ) {
|
|
my $fname = $_[0];
|
|
open $currentfile, '<', $fname or fatal_error "Unable to open $fname: $!";
|
|
$currentlinenumber = 0;
|
|
$currentfilename = $fname;
|
|
}
|
|
|
|
sub open_file( $ ) {
|
|
my $fname = find_file $_[0];
|
|
|
|
fatal_error 'Internal Error in open_file()' if defined $currentfile;
|
|
|
|
-f $fname && -s _ ? do_open_file $fname : '';
|
|
}
|
|
|
|
#
|
|
# Pop the include stack
|
|
#
|
|
sub pop_include() {
|
|
my $arrayref = pop @includestack;
|
|
|
|
if ( $arrayref ) {
|
|
( $currentfile, $currentfilename, $currentlinenumber ) = @$arrayref;
|
|
} else {
|
|
$currentfile = undef;
|
|
}
|
|
}
|
|
|
|
#
|
|
# This function is normally called below in read_a_line() when EOF is reached. Clients of the
|
|
# module may also call the function to close the file before EOF
|
|
#
|
|
|
|
sub close_file() {
|
|
if ( $currentfile ) {
|
|
my $result = close $currentfile;
|
|
|
|
pop_include;
|
|
|
|
fatal_error "SHELL Script failed" unless $result;
|
|
|
|
$first_entry = 0;
|
|
|
|
}
|
|
}
|
|
|
|
#
|
|
# The following two functions allow module clients to nest opens. This happens frequently
|
|
# in the Actions module.
|
|
#
|
|
sub push_open( $ ) {
|
|
|
|
push @includestack, [ $currentfile, $currentfilename, $currentlinenumber ];
|
|
my @a = @includestack;
|
|
push @openstack, \@a;
|
|
@includestack = ();
|
|
$currentfile = undef;
|
|
open_file( $_[0] );
|
|
|
|
}
|
|
|
|
sub pop_open() {
|
|
@includestack = @{pop @openstack};
|
|
pop_include;
|
|
}
|
|
|
|
sub shorewall {
|
|
unless ( $scriptfile ) {
|
|
fatal_error "shorewall() may not be called in this context" unless $currentfile;
|
|
|
|
$dir ||= '/tmp/';
|
|
|
|
eval {
|
|
( $scriptfile, $scriptfilename ) = tempfile ( 'scriptfileXXXX' , DIR => $dir );
|
|
};
|
|
|
|
fatal_error "Unable to create temporary file in directory $dir" if $@;
|
|
}
|
|
|
|
print $scriptfile "@_\n";
|
|
}
|
|
|
|
#
|
|
# We don't announce that we are checking/compiling a file until we determine that the file contains
|
|
# at least one non-blank, non-commentary line.
|
|
#
|
|
# The argument to this function may be either a scalar or a function reference. When the first
|
|
# non-blank/non-commentary line is reached:
|
|
#
|
|
# - if a function reference was passed to first_entry(), that function is called
|
|
# - otherwise, the argument to first_entry() is passed to progress_message2().
|
|
#
|
|
# We do this processing in read_a_line() rather than in the higher-level routines because
|
|
# Embedded Shell/Perl scripts are processed out of read_a_line(). If we were to defer announcement
|
|
# until we get back to the caller of read_a_line(), we could issue error messages about parsing and
|
|
# running scripts in the file before we'd even indicated that we are processing it.
|
|
#
|
|
sub first_entry( $ ) {
|
|
$first_entry = $_[0];
|
|
my $reftype = reftype $first_entry;
|
|
if ( $reftype ) {
|
|
fatal_error "Invalid argument to first_entry()" unless $reftype eq 'CODE';
|
|
}
|
|
}
|
|
|
|
sub embedded_shell( $ ) {
|
|
my $multiline = shift;
|
|
|
|
fatal_error "INCLUDEs nested too deeply" if @includestack >= 4;
|
|
my ( $command, $linenumber ) = ( "/bin/sh -c '$currentline", $currentlinenumber );
|
|
|
|
if ( $multiline ) {
|
|
#
|
|
# Multi-line script
|
|
#
|
|
fatal_error "Invalid BEGIN SHELL directive" unless $currentline =~ /^\s*$/;
|
|
$command .= "\n";
|
|
|
|
my $last = 0;
|
|
|
|
while ( <$currentfile> ) {
|
|
$currentlinenumber++;
|
|
last if $last = s/^\s*END(\s+SHELL)?\s*;?//;
|
|
$command .= $_;
|
|
}
|
|
|
|
fatal_error ( "Missing END SHELL" ) unless $last;
|
|
fatal_error ( "Invalid END SHELL directive" ) unless /^\s*$/;
|
|
}
|
|
|
|
$command .= q(');
|
|
|
|
push @includestack, [ $currentfile, $currentfilename, $currentlinenumber ];
|
|
$currentfile = undef;
|
|
open $currentfile , '-|', $command or fatal_error qq(Shell Command failed);
|
|
$currentfilename = "SHELL\@$currentfilename:$currentlinenumber";
|
|
$currentline = '';
|
|
$currentlinenumber = 0;
|
|
}
|
|
|
|
sub embedded_perl( $ ) {
|
|
my $multiline = shift;
|
|
|
|
my ( $command , $linenumber ) = ( qq(package Shorewall::User;\nno strict;\nuse Shorewall::Config qw/shorewall/;\n# line $currentlinenumber "$currentfilename"\n$currentline), $currentlinenumber );
|
|
|
|
if ( $multiline ) {
|
|
#
|
|
# Multi-line script
|
|
#
|
|
fatal_error "Invalid BEGIN PERL directive" unless $currentline =~ /^\s*$/;
|
|
$command .= "\n";
|
|
|
|
my $last = 0;
|
|
|
|
while ( <$currentfile> ) {
|
|
$currentlinenumber++;
|
|
last if $last = s/^\s*END(\s+PERL)?\s*;?//;
|
|
$command .= $_;
|
|
}
|
|
|
|
fatal_error ( "Missing END PERL" ) unless $last;
|
|
fatal_error ( "Invalid END PERL directive" ) unless /^\s*$/;
|
|
}
|
|
|
|
unless (my $return = eval $command ) {
|
|
if ( $@ ) {
|
|
#
|
|
# Perl found the script offensive or the script itself died
|
|
#
|
|
$@ =~ s/, <\$currentfile> line \d+//g;
|
|
fatal_error1 "$@";
|
|
}
|
|
|
|
unless ( defined $return ) {
|
|
fatal_error "Perl Script failed: $!" if $!;
|
|
fatal_error "Perl Script failed";
|
|
}
|
|
|
|
fatal_error "Perl Script Returned False";
|
|
}
|
|
|
|
if ( $scriptfile ) {
|
|
fatal_error "INCLUDEs nested too deeply" if @includestack >= 4;
|
|
|
|
close $scriptfile or fatal_error "Internal Error in embedded_perl()";
|
|
|
|
$scriptfile = undef;
|
|
|
|
push @includestack, [ $currentfile, $currentfilename, $currentlinenumber ];
|
|
$currentfile = undef;
|
|
|
|
open $currentfile, '<', $scriptfilename or fatal_error "Unable to open Perl Script $scriptfilename";
|
|
|
|
push @tempfiles, $scriptfilename unless unlink $scriptfilename; #unlink fails on Cygwin
|
|
|
|
$scriptfilename = '';
|
|
|
|
$currentfilename = "PERL\@$currentfilename:$linenumber";
|
|
$currentline = '';
|
|
$currentlinenumber = 0;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Read a line from the current include stack.
|
|
#
|
|
# - Ignore blank or comment-only lines.
|
|
# - Remove trailing comments.
|
|
# - Handle Line Continuation
|
|
# - Handle embedded SHELL and PERL scripts
|
|
# - Expand shell variables from $ENV.
|
|
# - Handle INCLUDE <filename>
|
|
#
|
|
|
|
sub read_a_line() {
|
|
while ( $currentfile ) {
|
|
|
|
$currentline = '';
|
|
$currentlinenumber = 0;
|
|
|
|
while ( <$currentfile> ) {
|
|
|
|
$currentlinenumber = $. unless $currentlinenumber;
|
|
|
|
chomp;
|
|
#
|
|
# Continuation
|
|
#
|
|
chop $currentline, next if substr( ( $currentline .= $_ ), -1, 1 ) eq '\\';
|
|
#
|
|
# Remove Trailing Comments -- result might be a blank line
|
|
#
|
|
$currentline =~ s/#.*$//;
|
|
#
|
|
# Ignore ( concatenated ) Blank Lines
|
|
#
|
|
$currentline = '', $currentlinenumber = 0, next if $currentline =~ /^\s*$/;
|
|
#
|
|
# Line not blank -- Handle any first-entry message/capabilities check
|
|
#
|
|
if ( $first_entry ) {
|
|
reftype( $first_entry ) ? $first_entry->() : progress_message2( $first_entry );
|
|
$first_entry = 0;
|
|
}
|
|
#
|
|
# Must check for shell/perl before doing variable expansion
|
|
#
|
|
if ( $currentline =~ s/^\s*(BEGIN\s+)?SHELL\s*;?// ) {
|
|
embedded_shell( $1 );
|
|
} elsif ( $currentline =~ s/^\s*(BEGIN\s+)?PERL\s*\;?// ) {
|
|
embedded_perl( $1 );
|
|
} else {
|
|
my $count = 0;
|
|
#
|
|
# Expand Shell Variables using %ENV
|
|
#
|
|
# $1 $2 $3 - $4
|
|
while ( $currentline =~ m( ^(.*?) \$({)? ([a-zA-Z]\w*) (?(2)}) (.*)$ )x ) {
|
|
my $val = $ENV{$3};
|
|
|
|
unless ( defined $val ) {
|
|
fatal_error "Undefined shell variable (\$$3)" unless exists $ENV{$3};
|
|
$val = '';
|
|
}
|
|
|
|
$currentline = join( '', $1 , $val , $4 );
|
|
fatal_error "Variable Expansion Loop" if ++$count > 100;
|
|
}
|
|
|
|
if ( $currentline =~ /^\s*INCLUDE\s/ ) {
|
|
|
|
my @line = split ' ', $currentline;
|
|
|
|
fatal_error "Invalid INCLUDE command" if @line != 2;
|
|
fatal_error "INCLUDEs/Scripts nested too deeply" if @includestack >= 4;
|
|
|
|
my $filename = find_file $line[1];
|
|
|
|
fatal_error "INCLUDE file $filename not found" unless -f $filename;
|
|
fatal_error "Directory ($filename) not allowed in INCLUDE" if -d _;
|
|
|
|
if ( -s _ ) {
|
|
push @includestack, [ $currentfile, $currentfilename, $currentlinenumber ];
|
|
$currentfile = undef;
|
|
do_open_file $filename;
|
|
} else {
|
|
$currentlinenumber = 0;
|
|
}
|
|
|
|
$currentline = '';
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
close_file;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Simple version of the above. Doesn't do line concatenation, shell variable expansion or INCLUDE processing
|
|
#
|
|
sub read_a_line1() {
|
|
while ( $currentfile ) {
|
|
while ( $currentline = <$currentfile> ) {
|
|
next if $currentline =~ /^\s*#/;
|
|
chomp $currentline;
|
|
next if $currentline =~ /^\s*$/;
|
|
$currentline =~ s/#.*$//; # Remove Trailing Comments
|
|
fatal_error "Non-ASCII gunk in file" if $currentline =~ /[^\s[:print:]]/;
|
|
$currentlinenumber = $.;
|
|
return 1;
|
|
}
|
|
|
|
close_file;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Provide the passed default value for the passed configuration variable
|
|
#
|
|
sub default ( $$ ) {
|
|
my ( $var, $val ) = @_;
|
|
|
|
$config{$var} = $val unless defined $config{$var} && $config{$var} ne '';
|
|
}
|
|
|
|
#
|
|
# Provide a default value for a yes/no configuration variable.
|
|
#
|
|
sub default_yes_no ( $$ ) {
|
|
my ( $var, $val ) = @_;
|
|
|
|
my $curval = "\L$config{$var}";
|
|
|
|
if ( defined $curval && $curval ne '' ) {
|
|
if ( $curval eq 'no' ) {
|
|
$config{$var} = '';
|
|
} else {
|
|
fatal_error "Invalid value for $var ($val)" unless $curval eq 'yes';
|
|
}
|
|
} else {
|
|
$config{$var} = $val;
|
|
}
|
|
}
|
|
|
|
my %validlevels = ( DEBUG => 7,
|
|
INFO => 6,
|
|
NOTICE => 5,
|
|
WARNING => 4,
|
|
WARN => 4,
|
|
ERR => 3,
|
|
ERROR => 3,
|
|
CRIT => 2,
|
|
ALERT => 1,
|
|
EMERG => 0,
|
|
PANIC => 0,
|
|
NONE => '',
|
|
ULOG => 'ULOG',
|
|
NFLOG => 'NFLOG');
|
|
|
|
my @suffixes = qw(group range threshold nlgroup cprange qthreshold);
|
|
|
|
#
|
|
# Validate a log level -- Drop the trailing '!' and translate to numeric value if appropriate"
|
|
#
|
|
sub level_error( $ ) {
|
|
fatal_error "Invalid log level ($_[0])";
|
|
}
|
|
|
|
sub validate_level( $ ) {
|
|
my $rawlevel = $_[0];
|
|
my $level = uc $rawlevel;
|
|
|
|
if ( defined $level && $level ne '' ) {
|
|
$level =~ s/!$//;
|
|
my $value = $validlevels{$level};
|
|
return $value if defined $value;
|
|
return $level if $level =~ /^[0-7]$/;
|
|
|
|
if ( $level =~ /^(NFLOG|ULOG)[(](.*)[)]$/ ) {
|
|
my $olevel = $1;
|
|
my @options = split /,/, $2;
|
|
my $prefix = lc $olevel;
|
|
my $index = $prefix eq 'ulog' ? 3 : 0;
|
|
|
|
level_error( $level ) if @options > 3;
|
|
|
|
for ( @options ) {
|
|
if ( defined $_ and $_ ne '' ) {
|
|
level_error( $level ) unless /^\d+/;
|
|
$olevel .= " --${prefix}-$suffixes[$index] $_";
|
|
}
|
|
|
|
$index++;
|
|
}
|
|
|
|
return $olevel;
|
|
}
|
|
|
|
if ( $level =~ /^NFLOG --/ or $level =~ /^ULOG --/ ) {
|
|
return $rawlevel;
|
|
}
|
|
|
|
level_error( $rawlevel );
|
|
}
|
|
|
|
'';
|
|
}
|
|
|
|
#
|
|
# Validate a log level and supply default
|
|
#
|
|
sub default_log_level( $$ ) {
|
|
my ( $level, $default ) = @_;
|
|
|
|
my $value = $config{$level};
|
|
|
|
unless ( defined $value && $value ne '' ) {
|
|
$config{$level} = $default;
|
|
} else {
|
|
$config{$level} = validate_level $value;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Check a tri-valued variable
|
|
#
|
|
sub check_trivalue( $$ ) {
|
|
my ( $var, $default) = @_;
|
|
my $val = "\L$config{$var}";
|
|
|
|
if ( defined $val ) {
|
|
if ( $val eq 'yes' || $val eq 'on' ) {
|
|
$config{$var} = 'on';
|
|
} elsif ( $val eq 'no' || $val eq 'off' ) {
|
|
$config{$var} = 'off';
|
|
} elsif ( $val eq 'keep' ) {
|
|
$config{$var} = '';
|
|
} elsif ( $val eq '' ) {
|
|
$config{$var} = $default
|
|
} else {
|
|
fatal_error "Invalid value ($val) for $var";
|
|
}
|
|
} else {
|
|
$config{var} = $default
|
|
}
|
|
}
|
|
|
|
#
|
|
# Produce a report of the detected capabilities
|
|
#
|
|
sub report_capability( $ ) {
|
|
my $cap = $_[0];
|
|
print " $capdesc{$cap}: ";
|
|
if ( $cap eq 'CAPVERSION' ) {
|
|
my $version = $capabilities{CAPVERSION};
|
|
printf "%d.%d.%d\n", int( $version / 10000 ) , int ( ( $version % 10000 ) / 100 ) , int ( $version % 100 );
|
|
} else {
|
|
print $capabilities{$cap} ? "Available\n" : "Not Available\n";
|
|
}
|
|
}
|
|
|
|
sub report_capabilities() {
|
|
if ( $verbose > 1 ) {
|
|
print "Shorewall has detected the following capabilities:\n";
|
|
|
|
for my $cap ( sort { $capdesc{$a} cmp $capdesc{$b} } keys %capabilities ) {
|
|
report_capability $cap;
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Search the current PATH for the passed executable
|
|
#
|
|
sub which( $ ) {
|
|
my $prog = $_[0];
|
|
|
|
for ( split /:/, $config{PATH} ) {
|
|
return "$_/$prog" if -x "$_/$prog";
|
|
}
|
|
|
|
'';
|
|
}
|
|
|
|
#
|
|
# Load the kernel modules defined in the 'modules' file.
|
|
#
|
|
sub load_kernel_modules( ) {
|
|
my $moduleloader = which( 'modprobe' ) || ( which 'insmod' );
|
|
|
|
my $modulesdir = $config{MODULESDIR};
|
|
|
|
unless ( $modulesdir ) {
|
|
my $uname = `uname -r`;
|
|
fatal_error "The command 'uname -r' failed" unless $? == 0;
|
|
chomp $uname;
|
|
$modulesdir = "/lib/modules/$uname/kernel/net/ipv4/netfilter:/lib/modules/$uname/kernel/net/netfilter";
|
|
}
|
|
|
|
my @moduledirectories = split /:/, $modulesdir;
|
|
|
|
if ( $moduleloader && open_file 'modules' ) {
|
|
my %loadedmodules;
|
|
|
|
$loadedmodules{$_}++ for split_list( $config{DONT_LOAD}, 'module' );
|
|
|
|
progress_message "Loading Modules...";
|
|
|
|
open LSMOD , '-|', 'lsmod' or fatal_error "Can't run lsmod";
|
|
|
|
while ( <LSMOD> ) {
|
|
my $module = ( split( /\s+/, $_, 2 ) )[0];
|
|
$loadedmodules{$module}++ unless $module eq 'Module'
|
|
}
|
|
|
|
close LSMOD;
|
|
|
|
$config{MODULE_SUFFIX} = 'o gz ko o.gz ko.gz' unless $config{MODULES_SUFFIX};
|
|
|
|
my @suffixes = split /\s+/ , $config{MODULE_SUFFIX};
|
|
|
|
while ( read_a_line ) {
|
|
fatal_error "Invalid modules file entry" unless ( $currentline =~ /^loadmodule\s+([a-zA-Z]\w*)\s*(.*)$/ );
|
|
my ( $module, $arguments ) = ( $1, $2 );
|
|
unless ( $loadedmodules{ $module } ) {
|
|
for my $directory ( @moduledirectories ) {
|
|
for my $suffix ( @suffixes ) {
|
|
my $modulefile = "$directory/$module.$suffix";
|
|
if ( -f $modulefile ) {
|
|
if ( $moduleloader eq 'insmod' ) {
|
|
system ("insmod $modulefile $arguments" );
|
|
} else {
|
|
system( "modprobe $module $arguments" );
|
|
}
|
|
|
|
$loadedmodules{ $module } = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Q[uie]t version of system(). Returns true for success
|
|
#
|
|
sub qt( $ ) {
|
|
system( "@_ > /dev/null 2>&1" ) == 0;
|
|
}
|
|
|
|
sub qt1( $ ) {
|
|
1 while system( "@_ > /dev/null 2>&1" ) == 4;
|
|
$? == 0;
|
|
}
|
|
|
|
#
|
|
# Determine which optional facilities are supported by iptables/netfilter
|
|
#
|
|
sub determine_capabilities( $ ) {
|
|
|
|
my $iptables = $_[0];
|
|
my $pid = $$;
|
|
my $sillyname = "fooX$pid";
|
|
my $sillyname1 = "foo1X$pid";
|
|
|
|
$capabilities{NAT_ENABLED} = qt1( "$iptables -t nat -L -n" );
|
|
$capabilities{MANGLE_ENABLED} = qt1( "$iptables -t mangle -L -n" );
|
|
|
|
qt1( "$iptables -N $sillyname" );
|
|
qt1( "$iptables -N $sillyname1" );
|
|
|
|
$capabilities{CONNTRACK_MATCH} = qt1( "$iptables -A $sillyname -m conntrack --ctorigdst 192.168.1.1 -j ACCEPT" );
|
|
|
|
if ( $capabilities{CONNTRACK_MATCH} ) {
|
|
$capabilities{NEW_CONNTRACK_MATCH} = qt1( "$iptables -A $sillyname -m conntrack -p tcp --ctorigdstport 22 -j ACCEPT" );
|
|
$capabilities{OLD_CONNTRACK_MATCH} = ! qt1( "$iptables -A $sillyname -m conntrack ! --ctorigdstport 1.2.3.4" );
|
|
}
|
|
|
|
if ( qt1( "$iptables -A $sillyname -p tcp -m multiport --dports 21,22 -j ACCEPT" ) ) {
|
|
$capabilities{MULTIPORT} = 1;
|
|
$capabilities{KLUDGEFREE} = qt1( "$iptables -A $sillyname -p tcp -m multiport --sports 60 -m multiport --dports 99 -j ACCEPT" );
|
|
}
|
|
|
|
$capabilities{XMULTIPORT} = qt1( "$iptables -A $sillyname -p tcp -m multiport --dports 21:22 -j ACCEPT" );
|
|
$capabilities{POLICY_MATCH} = qt1( "$iptables -A $sillyname -m policy --pol ipsec --mode tunnel --dir in -j ACCEPT" );
|
|
|
|
if ( qt1( "$iptables -A $sillyname -m physdev --physdev-in eth0 -j ACCEPT" ) ) {
|
|
$capabilities{PHYSDEV_MATCH} = 1;
|
|
$capabilities{PHYSDEV_BRIDGE} = qt1( "$iptables -A $sillyname -m physdev --physdev-is-bridged --physdev-in eth0 --physdev-out eth1 -j ACCEPT" );
|
|
unless ( $capabilities{KLUDGEFREE} ) {
|
|
$capabilities{KLUDGEFREE} = qt1( "$iptables -A $sillyname -m physdev --physdev-in eth0 -m physdev --physdev-out eth0 -j ACCEPT" );
|
|
}
|
|
}
|
|
|
|
if ( qt1( "$iptables -A $sillyname -m iprange --src-range 192.168.1.5-192.168.1.124 -j ACCEPT" ) ) {
|
|
$capabilities{IPRANGE_MATCH} = 1;
|
|
unless ( $capabilities{KLUDGEFREE} ) {
|
|
$capabilities{KLUDGEFREE} = qt1( "$iptables -A $sillyname -m iprange --src-range 192.168.1.5-192.168.1.124 -m iprange --dst-range 192.168.1.5-192.168.1.124 -j ACCEPT" );
|
|
}
|
|
}
|
|
|
|
$capabilities{RECENT_MATCH} = qt1( "$iptables -A $sillyname -m recent --update -j ACCEPT" );
|
|
$capabilities{OWNER_MATCH} = qt1( "$iptables -A $sillyname -m owner --uid-owner 0 -j ACCEPT" );
|
|
|
|
if ( qt1( "$iptables -A $sillyname -m connmark --mark 2 -j ACCEPT" )) {
|
|
$capabilities{CONNMARK_MATCH} = 1;
|
|
$capabilities{XCONNMARK_MATCH} = qt1( "$iptables -A $sillyname -m connmark --mark 2/0xFF -j ACCEPT" );
|
|
}
|
|
|
|
$capabilities{IPP2P_MATCH} = qt1( "$iptables -A $sillyname -p tcp -m ipp2p --edk -j ACCEPT" );
|
|
$capabilities{LENGTH_MATCH} = qt1( "$iptables -A $sillyname -m length --length 10:20 -j ACCEPT" );
|
|
$capabilities{ENHANCED_REJECT} = qt1( "$iptables -A $sillyname -j REJECT --reject-with icmp-host-prohibited" );
|
|
$capabilities{COMMENTS} = qt1( qq($iptables -A $sillyname -j ACCEPT -m comment --comment "This is a comment" ) );
|
|
|
|
if ( $capabilities{MANGLE_ENABLED} ) {
|
|
qt1( "$iptables -t mangle -N $sillyname" );
|
|
|
|
if ( qt1( "$iptables -t mangle -A $sillyname -j MARK --set-mark 1" ) ) {
|
|
$capabilities{MARK} = 1;
|
|
$capabilities{XMARK} = qt1( "$iptables -t mangle -A $sillyname -j MARK --and-mark 0xFF" );
|
|
}
|
|
|
|
if ( qt1( "$iptables -t mangle -A $sillyname -j CONNMARK --save-mark" ) ) {
|
|
$capabilities{CONNMARK} = 1;
|
|
$capabilities{XCONNMARK} = qt1( "$iptables -t mangle -A $sillyname -j CONNMARK --save-mark --mask 0xFF" );
|
|
}
|
|
|
|
$capabilities{CLASSIFY_TARGET} = qt1( "$iptables -t mangle -A $sillyname -j CLASSIFY --set-class 1:1" );
|
|
qt1( "$iptables -t mangle -F $sillyname" );
|
|
qt1( "$iptables -t mangle -X $sillyname" );
|
|
|
|
$capabilities{MANGLE_FORWARD} = qt1( "$iptables -t mangle -L FORWARD -n" );
|
|
}
|
|
|
|
$capabilities{RAW_TABLE} = qt1( "$iptables -t raw -L -n" );
|
|
|
|
if ( which 'ipset' ) {
|
|
qt( "ipset -X $sillyname" );
|
|
|
|
if ( qt( "ipset -N $sillyname iphash" ) ) {
|
|
if ( qt1( "$iptables -A $sillyname -m set --set $sillyname src -j ACCEPT" ) ) {
|
|
qt1( "$iptables -D $sillyname -m set --set $sillyname src -j ACCEPT" );
|
|
$capabilities{IPSET_MATCH} = 1;
|
|
}
|
|
|
|
qt( "ipset -X $sillyname" );
|
|
}
|
|
}
|
|
|
|
$capabilities{USEPKTTYPE} = qt1( "$iptables -A $sillyname -m pkttype --pkt-type broadcast -j ACCEPT" );
|
|
$capabilities{ADDRTYPE} = qt1( "$iptables -A $sillyname -m addrtype --src-type BROADCAST -j ACCEPT" );
|
|
$capabilities{TCPMSS_MATCH} = qt1( "$iptables -A $sillyname -p tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1000:1500 -j ACCEPT" );
|
|
$capabilities{HASHLIMIT_MATCH} = qt1( "$iptables -A $sillyname -m hashlimit --hashlimit 4 --hashlimit-burst 5 --hashlimit-name fooX1234 --hashlimit-mode dstip -j ACCEPT" );
|
|
$capabilities{NFQUEUE_TARGET} = qt1( "$iptables -A $sillyname -j NFQUEUE --queue-num 4" );
|
|
$capabilities{REALM_MATCH} = qt1( "$iptables -A $sillyname -m realm --realm 1" );
|
|
$capabilities{HELPER_MATCH} = qt1( "$iptables -A $sillyname -m helper --helper \"ftp\"" );
|
|
$capabilities{CONNLIMIT_MATCH} = qt1( "$iptables -A $sillyname -m connlimit --connlimit-above 8" );
|
|
$capabilities{TIME_MATCH} = qt1( "$iptables -A $sillyname -m time --timestart 11:00" );
|
|
$capabilities{GOTO_SUPPORT} = qt1( "$iptables -A $sillyname -g $sillyname1" );
|
|
|
|
qt1( "$iptables -F $sillyname" );
|
|
qt1( "$iptables -X $sillyname" );
|
|
qt1( "$iptables -F $sillyname1" );
|
|
qt1( "$iptables -X $sillyname1" );
|
|
|
|
$capabilities{CAPVERSION} = $globals{CAPVERSION};
|
|
}
|
|
|
|
#
|
|
# Require the passed capability
|
|
#
|
|
sub require_capability( $$$ ) {
|
|
my ( $capability, $description, $singular ) = @_;
|
|
|
|
fatal_error "$description require${singular} $capdesc{$capability} in your kernel and iptables" unless $capabilities{$capability};
|
|
}
|
|
|
|
#
|
|
# Set default config path
|
|
#
|
|
sub ensure_config_path() {
|
|
|
|
my $f = "$globals{SHAREDIR}/configpath";
|
|
|
|
$globals{CONFDIR} = '/usr/share/shorewall/configfiles/' if $> != 0;
|
|
|
|
unless ( $config{CONFIG_PATH} ) {
|
|
fatal_error "$f does not exist" unless -f $f;
|
|
|
|
open_file $f;
|
|
|
|
$ENV{CONFDIR} = $globals{CONFDIR};
|
|
|
|
while ( read_a_line ) {
|
|
if ( $currentline =~ /^\s*([a-zA-Z]\w*)=(.*?)\s*$/ ) {
|
|
my ($var, $val) = ($1, $2);
|
|
$config{$var} = ( $val =~ /\"([^\"]*)\"$/ ? $1 : $val ) if exists $config{$var};
|
|
} else {
|
|
fatal_error "Unrecognized entry";
|
|
}
|
|
}
|
|
|
|
fatal_error "CONFIG_PATH not found in $f" unless $config{CONFIG_PATH};
|
|
}
|
|
|
|
@config_path = split /:/, $config{CONFIG_PATH};
|
|
|
|
for ( @config_path ) {
|
|
$_ .= '/' unless m|/$|;
|
|
}
|
|
|
|
if ( $shorewall_dir ) {
|
|
$shorewall_dir = getcwd if $shorewall_dir =~ m|^(\./*)+$|;
|
|
$shorewall_dir .= '/' unless $shorewall_dir =~ m|/$|;
|
|
unshift @config_path, $shorewall_dir if $shorewall_dir ne $config_path[0];
|
|
$config{CONFIG_PATH} = join ':', @config_path;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Set $shorewall_dir
|
|
#
|
|
sub set_shorewall_dir( $ ) {
|
|
$shorewall_dir = shift;
|
|
ensure_config_path;
|
|
}
|
|
|
|
#
|
|
# Small functions called by get_configuration. We separate them so profiling is more useful
|
|
#
|
|
sub process_shorewall_conf() {
|
|
my $file = find_file 'shorewall.conf';
|
|
|
|
if ( -f $file ) {
|
|
if ( -r _ ) {
|
|
open_file $file;
|
|
|
|
while ( read_a_line ) {
|
|
if ( $currentline =~ /^\s*([a-zA-Z]\w*)=(.*?)\s*$/ ) {
|
|
my ($var, $val) = ($1, $2);
|
|
unless ( exists $config{$var} ) {
|
|
warning_message "Unknown configuration option ($var) ignored";
|
|
next;
|
|
}
|
|
|
|
$config{$var} = ( $val =~ /\"([^\"]*)\"$/ ? $1 : $val );
|
|
} else {
|
|
fatal_error "Unrecognized entry";
|
|
}
|
|
}
|
|
} else {
|
|
fatal_error "Cannot read $file (Hint: Are you root?)";
|
|
}
|
|
} else {
|
|
fatal_error "$file does not exist!";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Process the records in the capabilities file
|
|
#
|
|
sub read_capabilities() {
|
|
while ( read_a_line1 ) {
|
|
if ( $currentline =~ /^([a-zA-Z]\w*)=(.*)$/ ) {
|
|
my ($var, $val) = ($1, $2);
|
|
unless ( exists $capabilities{$var} ) {
|
|
warning_message "Unknown capability ($var) ignored";
|
|
next;
|
|
}
|
|
|
|
$capabilities{$var} = $val =~ /^\"([^\"]*)\"$/ ? $1 : $val;
|
|
} else {
|
|
fatal_error "Unrecognized capabilities entry";
|
|
}
|
|
}
|
|
|
|
if ( $capabilities{CAPVERSION} ) {
|
|
warning_message "Your capabilities file is out of date -- it does not contain all of the capabilities defined by Shorewall version $globals{VERSION}" unless $capabilities{CAPVERSION} >= $globals{CAPVERSION};
|
|
} else {
|
|
warning_message "Your capabilities file may not contain all of the capabilities defined by Shorewall version $globals{VERSION}";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Get the system's capabilities, either by probing or by reading a capabilities file
|
|
#
|
|
sub get_capabilities( $ ) {
|
|
my $export = $_[0];
|
|
|
|
if ( ! $export && $> == 0 ) { # $> == $EUID
|
|
my $iptables = $config{IPTABLES};
|
|
|
|
if ( $iptables ) {
|
|
fatal_error "IPTABLES=$iptables does not exist or is not executable" unless -x $iptables;
|
|
} else {
|
|
fatal_error "Can't find iptables executable" unless $iptables = which 'iptables';
|
|
}
|
|
|
|
my $iptables_restore=$iptables . '-restore';
|
|
|
|
fatal_error "$iptables_restore does not exist or is not executable" unless -x $iptables_restore;
|
|
|
|
load_kernel_modules;
|
|
|
|
if ( open_file 'capabilities' ) {
|
|
read_capabilities;
|
|
} else {
|
|
determine_capabilities $iptables;
|
|
}
|
|
} else {
|
|
unless ( open_file 'capabilities' ) {
|
|
fatal_error "The -e compiler option requires a capabilities file" if $export;
|
|
fatal_error "Compiling under non-root uid requires a capabilities file";
|
|
}
|
|
|
|
read_capabilities;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Deal with options that we no longer support
|
|
#
|
|
sub unsupported_yes_no( $ ) {
|
|
my $option = shift;
|
|
|
|
default_yes_no $option, '';
|
|
|
|
fatal_error "$option=Yes is not supported by Shorewall-perl $globals{VERSION}" if $config{$option};
|
|
}
|
|
|
|
#
|
|
# - Read the shorewall.conf file
|
|
# - Read the capabilities file, if any
|
|
# - establish global hashes %config , %globals and %capabilities
|
|
#
|
|
sub get_configuration( $ ) {
|
|
|
|
my $export = $_[0];
|
|
|
|
$globals{EXPORT} = $export;
|
|
|
|
our ( $once, @originalinc );
|
|
|
|
@originalinc = @INC unless $once++;
|
|
|
|
ensure_config_path;
|
|
|
|
process_shorewall_conf;
|
|
|
|
ensure_config_path;
|
|
|
|
@INC = @originalinc;
|
|
|
|
unshift @INC, @config_path;
|
|
|
|
default 'PATH' , '/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin';
|
|
|
|
default 'MODULE_PREFIX', 'o gz ko o.gz ko.gz';
|
|
|
|
get_capabilities( $export );
|
|
|
|
$globals{ORIGINAL_POLICY_MATCH} = $capabilities{POLICY_MATCH};
|
|
|
|
if ( $config{LOGRATE} || $config{LOGBURST} ) {
|
|
if ( defined $config{LOGRATE} ) {
|
|
fatal_error"Invalid LOGRATE ($config{LOGRATE})" unless $config{LOGRATE} =~ /^\d+\/(second|minute)$/;
|
|
}
|
|
|
|
if ( defined $config{LOGBURST} ) {
|
|
fatal_error"Invalid LOGBURST ($config{LOGBURST})" unless $config{LOGBURST} =~ /^\d+$/;
|
|
}
|
|
|
|
$globals{LOGLIMIT} = '-m limit ';
|
|
$globals{LOGLIMIT} .= "--limit $config{LOGRATE} " if defined $config{LOGRATE};
|
|
$globals{LOGLIMIT} .= "--limit-burst $config{LOGBURST} " if defined $config{LOGBURST};
|
|
} else {
|
|
$globals{LOGLIMIT} = '';
|
|
}
|
|
|
|
check_trivalue ( 'IP_FORWARDING', 'on' );
|
|
check_trivalue ( 'ROUTE_FILTER', '' );
|
|
check_trivalue ( 'LOG_MARTIANS', 'on' );
|
|
|
|
default 'STARTUP_LOG' , '';
|
|
|
|
if ( $config{STARTUP_LOG} ne '' ) {
|
|
if ( defined $config{LOG_VERBOSITY} ) {
|
|
if ( $config{LOG_VERBOSITY} eq '' ) {
|
|
$config{LOG_VERBOSITY} = 2;
|
|
} else {
|
|
my $val = numeric_value( $config{LOG_VERBOSITY} );
|
|
fatal_error "Invalid LOG_VERBOSITY ($config{LOG_VERBOSITY} )" unless defined( $val ) && ( $val >= -1 ) && ( $val <= 2 );
|
|
$config{STARTUP_LOG} = '' if $config{LOG_VERBOSITY} < 0;
|
|
}
|
|
} else {
|
|
$config{LOG_VERBOSITY} = 2;
|
|
}
|
|
} else {
|
|
$config{LOG_VERBOSITY} = -1;
|
|
}
|
|
|
|
default_yes_no 'ADD_IP_ALIASES' , 'Yes';
|
|
default_yes_no 'ADD_SNAT_ALIASES' , '';
|
|
default_yes_no 'DETECT_DNAT_IPADDRS' , '';
|
|
default_yes_no 'DETECT_DNAT_IPADDRS' , '';
|
|
default_yes_no 'CLEAR_TC' , 'Yes';
|
|
|
|
if ( defined $config{CLAMPMSS} ) {
|
|
default_yes_no 'CLAMPMSS' , '' unless $config{CLAMPMSS} =~ /^\d+$/;
|
|
} else {
|
|
$config{CLAMPMSS} = '';
|
|
}
|
|
|
|
unless ( $config{ADD_IP_ALIASES} || $config{ADD_SNAT_ALIASES} ) {
|
|
$config{RETAIN_ALIASES} = '';
|
|
} else {
|
|
default_yes_no 'RETAIN_ALIASES' , '';
|
|
}
|
|
|
|
default_yes_no 'ADMINISABSENTMINDED' , '';
|
|
default_yes_no 'BLACKLISTNEWONLY' , '';
|
|
default_yes_no 'DISABLE_IPV6' , '';
|
|
|
|
unsupported_yes_no 'DYNAMIC_ZONES';
|
|
unsupported_yes_no 'BRIDGING';
|
|
unsupported_yes_no 'SAVE_IPSETS';
|
|
unsupported_yes_no 'MAPOLDACTIONS';
|
|
|
|
default_yes_no 'STARTUP_ENABLED' , 'Yes';
|
|
default_yes_no 'DELAYBLACKLISTLOAD' , '';
|
|
|
|
warning_message 'DELAYBLACKLISTLOAD=Yes is not supported by Shorewall-perl ' . $globals{VERSION} if $config{DELAYBLACKLISTLOAD};
|
|
|
|
default_yes_no 'LOGTAGONLY' , ''; $globals{LOGTAGONLY} = $config{LOGTAGONLY};
|
|
default_yes_no 'RFC1918_STRICT' , '';
|
|
default_yes_no 'FASTACCEPT' , '';
|
|
|
|
fatal_error "BLACKLISTNEWONLY=No may not be specified with FASTACCEPT=Yes" if $config{FASTACCEPT} && ! $config{BLACKLISTNEWONLY};
|
|
|
|
default_yes_no 'IMPLICIT_CONTINUE' , '';
|
|
default_yes_no 'HIGH_ROUTE_MARKS' , '';
|
|
default_yes_no 'TC_EXPERT' , '';
|
|
default_yes_no 'USE_ACTIONS' , 'Yes';
|
|
|
|
warning_message 'USE_ACTIONS=No is not supported by Shorewall-perl ' . $globals{VERSION} unless $config{USE_ACTIONS};
|
|
|
|
default_yes_no 'EXPORTPARAMS' , '';
|
|
default_yes_no 'EXPAND_POLICIES' , '';
|
|
default_yes_no 'KEEP_RT_TABLES' , '';
|
|
default_yes_no 'DELETE_THEN_ADD' , 'Yes';
|
|
default_yes_no 'AUTO_COMMENT' , 'Yes';
|
|
default_yes_no 'MULTICAST' , '';
|
|
default_yes_no 'MARK_IN_FORWARD_CHAIN' , '';
|
|
default_yes_no 'MANGLE_ENABLED' , 'Yes';
|
|
default_yes_no 'NULL_ROUTE_RFC1918' , '';
|
|
default_yes_no 'USE_DEFAULT_RT' , '';
|
|
|
|
$capabilities{XCONNMARK} = '' unless $capabilities{XCONNMARK_MATCH} and $capabilities{XMARK};
|
|
|
|
default 'BLACKLIST_DISPOSITION' , 'DROP';
|
|
|
|
default_log_level 'BLACKLIST_LOGLEVEL', '';
|
|
default_log_level 'MACLIST_LOG_LEVEL', '';
|
|
default_log_level 'TCP_FLAGS_LOG_LEVEL', '';
|
|
default_log_level 'RFC1918_LOG_LEVEL', 6;
|
|
default_log_level 'SMURF_LOG_LEVEL', '';
|
|
default_log_level 'LOGALLNEW', '';
|
|
|
|
my $val;
|
|
|
|
$globals{MACLIST_TARGET} = 'reject';
|
|
|
|
if ( $val = $config{MACLIST_DISPOSITION} ) {
|
|
unless ( $val eq 'REJECT' ) {
|
|
if ( $val eq 'DROP' ) {
|
|
$globals{MACLIST_TARGET} = 'DROP';
|
|
} elsif ( $val eq 'ACCEPT' ) {
|
|
$globals{MACLIST_TARGET} = 'RETURN';
|
|
} else {
|
|
fatal_error "Invalid value ($config{MACLIST_DISPOSITION}) for MACLIST_DISPOSITION"
|
|
}
|
|
}
|
|
} else {
|
|
$config{MACLIST_DISPOSITION} = 'REJECT';
|
|
}
|
|
|
|
if ( $val = $config{MACLIST_TABLE} ) {
|
|
if ( $val eq 'mangle' ) {
|
|
fatal_error 'MACLIST_DISPOSITION=REJECT is not allowed with MACLIST_TABLE=mangle' if $config{MACLIST_DISPOSITION} eq 'REJECT';
|
|
} else {
|
|
fatal_error "Invalid value ($val) for MACLIST_TABLE option" unless $val eq 'filter';
|
|
}
|
|
} else {
|
|
default 'MACLIST_TABLE' , 'filter';
|
|
}
|
|
|
|
if ( $val = $config{TCP_FLAGS_DISPOSITION} ) {
|
|
fatal_error "Invalid value ($config{TCP_FLAGS_DISPOSITION}) for TCP_FLAGS_DISPOSITION" unless $val =~ /^(REJECT|ACCEPT|DROP)$/;
|
|
} else {
|
|
$config{TCP_FLAGS_DISPOSITION} = 'DROP';
|
|
}
|
|
|
|
default 'TC_ENABLED' , 'Internal';
|
|
|
|
$val = "\L$config{TC_ENABLED}";
|
|
|
|
if ( $val eq 'yes' ) {
|
|
my $file = find_file 'tcstart';
|
|
fatal_error "Unable to find tcstart file" unless -f $file;
|
|
$globals{TC_SCRIPT} = $file;
|
|
} elsif ( $val eq 'internal' ) {
|
|
$config{TC_ENABLED} = 'Internal';
|
|
} else {
|
|
fatal_error "Invalid value ($config{TC_ENABLED}) for TC_ENABLED" unless $val eq 'no';
|
|
$config{TC_ENABLED} = '';
|
|
}
|
|
|
|
fatal_error "TC_ENABLED=$config{TC_ENABLED} is not allowed with MANGLE_ENABLED=No" if $config{TC_ENABLED} && ! $config{MANGLE_ENABLED};
|
|
|
|
default 'RESTOREFILE' , 'restore';
|
|
default 'IPSECFILE' , 'zones';
|
|
default 'DROP_DEFAULT' , 'Drop';
|
|
default 'REJECT_DEFAULT' , 'Reject';
|
|
default 'QUEUE_DEFAULT' , 'none';
|
|
default 'NFQUEUE_DEFAULT' , 'none';
|
|
default 'ACCEPT_DEFAULT' , 'none';
|
|
default 'OPTIMIZE' , 0;
|
|
|
|
fatal_error 'IPSECFILE=ipsec is not supported by Shorewall-perl ' . $globals{VERSION} unless $config{IPSECFILE} eq 'zones';
|
|
|
|
for my $default qw/DROP_DEFAULT REJECT_DEFAULT QUEUE_DEFAULT NFQUEUE_DEFAULT ACCEPT_DEFAULT/ {
|
|
$config{$default} = 'none' if "\L$config{$default}" eq 'none';
|
|
}
|
|
|
|
$val = $config{OPTIMIZE};
|
|
|
|
fatal_error "Invalid OPTIMIZE value ($val)" unless ( $val eq '0' ) || ( $val eq '1' );
|
|
|
|
fatal_error "Invalid IPSECFILE value ($config{IPSECFILE}" unless $config{IPSECFILE} eq 'zones';
|
|
|
|
$globals{MARKING_CHAIN} = $config{MARK_IN_FORWARD_CHAIN} ? 'tcfor' : 'tcpre';
|
|
|
|
if ( $val = $config{LOGFORMAT} ) {
|
|
my $result;
|
|
|
|
eval {
|
|
if ( $val =~ /%d/ ) {
|
|
$globals{LOGRULENUMBERS} = 'Yes';
|
|
$result = sprintf "$val", 'fooxx2barxx', 1, 'ACCEPT';
|
|
} else {
|
|
$result = sprintf "$val", 'fooxx2barxx', 'ACCEPT';
|
|
}
|
|
};
|
|
|
|
fatal_error "Invalid LOGFORMAT ($val)" if $@;
|
|
|
|
fatal_error "LOGFORMAT string is longer than 29 characters ($val)" if length $result > 29;
|
|
|
|
$globals{MAXZONENAMELENGTH} = int ( 5 + ( ( 29 - (length $result ) ) / 2) );
|
|
} else {
|
|
$config{LOGFORMAT}='Shorewall:%s:%s:';
|
|
$globals{MAXZONENAMELENGTH} = 5;
|
|
}
|
|
|
|
if ( $config{LOCKFILE} ) {
|
|
my ( $file, $dir, $suffix );
|
|
|
|
eval {
|
|
( $file, $dir, $suffix ) = fileparse( $config{LOCKFILE} );
|
|
};
|
|
|
|
die $@ if $@;
|
|
|
|
fatal_error "LOCKFILE=$config{LOCKFILE}: Directory $dir does not exist" unless $export or -d $dir;
|
|
} else {
|
|
$config{LOCKFILE} = '';
|
|
}
|
|
}
|
|
|
|
#
|
|
# The values of the options in @propagateconfig are copied to the object file in OPTION=<value> format.
|
|
#
|
|
sub propagateconfig() {
|
|
for my $option ( @propagateconfig ) {
|
|
my $value = $config{$option} || '';
|
|
emit "$option=\"$value\"";
|
|
}
|
|
|
|
for my $option ( @propagateenv ) {
|
|
my $value = $globals{$option} || '';
|
|
emit "$option=\"$value\"";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Add a shell script file to the output script -- Return true if the
|
|
# file exists and is not in /usr/share/shorewall/.
|
|
#
|
|
sub append_file( $ ) {
|
|
my $user_exit = find_file $_[0];
|
|
my $result = 0;
|
|
|
|
unless ( $user_exit =~ /^($globals{SHAREDIR})/ ) {
|
|
if ( -f $user_exit ) {
|
|
$result = 1;
|
|
save_progress_message "Processing $user_exit ...";
|
|
copy1 $user_exit;
|
|
}
|
|
}
|
|
|
|
$result;
|
|
}
|
|
|
|
#
|
|
# Run a Perl extension script
|
|
#
|
|
sub run_user_exit( $ ) {
|
|
my $chainref = $_[0];
|
|
my $file = find_file $chainref->{name};
|
|
|
|
if ( -f $file ) {
|
|
progress_message "Processing $file...";
|
|
|
|
my $command = qq(package Shorewall::User;\nno strict;\n# line 1 "$file"\n) . `cat $file`;
|
|
|
|
unless (my $return = eval $command ) {
|
|
fatal_error "Couldn't parse $file: $@" if $@;
|
|
|
|
unless ( defined $return ) {
|
|
fatal_error "Couldn't do $file: $!" if $!;
|
|
fatal_error "Couldn't do $file";
|
|
}
|
|
|
|
fatal_error "$file returned a false value";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub run_user_exit1( $ ) {
|
|
my $file = find_file $_[0];
|
|
|
|
if ( -f $file ) {
|
|
progress_message "Processing $file...";
|
|
#
|
|
# File may be empty -- in which case eval would fail
|
|
#
|
|
push_open $file;
|
|
|
|
if ( read_a_line1 ) {
|
|
close_file;
|
|
|
|
my $command = qq(package Shorewall::User;\n# line 1 "$file"\n) . `cat $file`;
|
|
|
|
unless (my $return = eval $command ) {
|
|
fatal_error "Couldn't parse $file: $@" if $@;
|
|
|
|
unless ( defined $return ) {
|
|
fatal_error "Couldn't do $file: $!" if $!;
|
|
fatal_error "Couldn't do $file";
|
|
}
|
|
|
|
fatal_error "$file returned a false value";
|
|
}
|
|
} else {
|
|
pop_open;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub run_user_exit2( $$ ) {
|
|
my ($file, $chainref) = ( find_file $_[0], $_[1] );
|
|
|
|
if ( -f $file ) {
|
|
progress_message "Processing $file...";
|
|
#
|
|
# File may be empty -- in which case eval would fail
|
|
#
|
|
push_open $file;
|
|
|
|
if ( read_a_line1 ) {
|
|
close_file;
|
|
|
|
unless (my $return = eval `cat $file` ) {
|
|
fatal_error "Couldn't parse $file: $@" if $@;
|
|
|
|
unless ( defined $return ) {
|
|
fatal_error "Couldn't do $file: $!" if $!;
|
|
fatal_error "Couldn't do $file";
|
|
}
|
|
|
|
fatal_error "$file returned a false value";
|
|
}
|
|
}
|
|
|
|
pop_open;
|
|
|
|
}
|
|
}
|
|
|
|
#
|
|
# Generate the aux config file for Shorewall Lite
|
|
#
|
|
sub generate_aux_config() {
|
|
sub conditionally_add_option( $ ) {
|
|
my $option = $_[0];
|
|
|
|
my $value = $config{$option};
|
|
|
|
emit "[ -n \"\${$option:=$value}\" ]" if $value ne '';
|
|
}
|
|
|
|
sub conditionally_add_option1( $ ) {
|
|
my $option = $_[0];
|
|
|
|
my $value = $config{$option};
|
|
|
|
emit "$option=\"$value\"" if $value;
|
|
}
|
|
|
|
create_temp_aux_config;
|
|
|
|
my $date = localtime;
|
|
|
|
emit "#\n# Shorewall auxiliary configuration file created by Shorewall-perl version $globals{VERSION} - $date\n#";
|
|
|
|
for my $option qw(VERBOSITY LOGFILE LOGFORMAT IPTABLES PATH SHOREWALL_SHELL SUBSYSLOCK LOCKFILE RESTOREFILE SAVE_IPSETS) {
|
|
conditionally_add_option $option;
|
|
}
|
|
|
|
conditionally_add_option1 'TC_ENABLED';
|
|
|
|
finalize_aux_config;
|
|
|
|
}
|
|
|
|
END {
|
|
#
|
|
# Close files first in case we're running under Cygwin
|
|
#
|
|
close $object if $object;
|
|
close $scriptfile if $scriptfile;
|
|
close $log if $log;
|
|
#
|
|
# Unlink temporary files
|
|
#
|
|
unlink $tempfile if $tempfile;
|
|
unlink $scriptfilename if $scriptfilename;
|
|
unlink $_ for @tempfiles;
|
|
}
|
|
|
|
1;
|