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https://gitlab.com/shorewall/code.git
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Allow users to preview the generated ruleset.
Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep
parent
271e472d3d
commit
4420eed8d7
@ -157,6 +157,7 @@ our %EXPORT_TAGS = (
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have_global_variables
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set_global_variables
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create_netfilter_load
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preview_netfilter_load
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create_chainlist_reload
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create_stop_load
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$section
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@ -2853,6 +2854,20 @@ sub enter_cmd_mode() {
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$mode = CMD_MODE;
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}
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#
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# These versions are used by 'preview'
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#
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sub enter_cat_mode1() {
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print "\n";
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emitstd "cat << __EOF__";
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$mode = CAT_MODE;
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}
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sub enter_cmd_mode1() {
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print "__EOF__\n\n" if $mode == CAT_MODE;
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$mode = CMD_MODE;
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}
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#
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# Emits the passed rule (input to iptables-restore) or command
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#
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@ -2874,6 +2889,25 @@ sub emitr( $ ) {
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}
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}
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sub emitr1( $ ) {
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if ( my $rule = $_[0] ) {
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if ( substr( $rule, 0, 2 ) eq '-A' ) {
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#
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# A rule
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#
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enter_cat_mode1 unless $mode == CAT_MODE;
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print "$rule\n";
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} else {
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#
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# A command
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#
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enter_cmd_mode1 unless $mode == CMD_MODE;
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$rule =~ s/ >&3//;
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emitstd $rule;
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}
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}
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}
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#
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# Generate the netfilter input
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#
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@ -2977,6 +3011,74 @@ sub create_netfilter_load( $ ) {
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emit "}\n";
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}
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#
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# Preview netfilter input
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#
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sub preview_netfilter_load() {
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my @table_list;
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push @table_list, 'raw' if $capabilities{RAW_TABLE};
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push @table_list, 'nat' if $capabilities{NAT_ENABLED};
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push @table_list, 'mangle' if $capabilities{MANGLE_ENABLED} && $config{MANGLE_ENABLED};
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push @table_list, 'filter';
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$mode = NULL_MODE;
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push_indent;
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enter_cat_mode1;
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my $date = localtime;
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print "#\n# Generated by Shorewall $globals{VERSION} - $date\n#\n";
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for my $table ( @table_list ) {
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print "*$table\n";
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my @chains;
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#
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# iptables-restore seems to be quite picky about the order of the builtin chains
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#
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for my $chain ( @builtins ) {
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my $chainref = $chain_table{$table}{$chain};
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if ( $chainref ) {
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assert( $chainref->{cmdlevel} == 0 );
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print ":$chain $chainref->{policy} [0:0]\n";
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push @chains, $chainref;
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}
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}
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#
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# First create the chains in the current table
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#
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for my $chain ( grep $chain_table{$table}{$_}->{referenced} , ( sort keys %{$chain_table{$table}} ) ) {
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my $chainref = $chain_table{$table}{$chain};
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unless ( $chainref->{builtin} ) {
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assert( $chainref->{cmdlevel} == 0 );
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print ":$chainref->{name} - [0:0]\n";
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push @chains, $chainref;
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}
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}
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#
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# Then emit the rules
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#
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for my $chainref ( @chains ) {
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emitr1 $_ for ( grep defined $_, @{$chainref->{rules}} );
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}
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#
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# Commit the changes to the table
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#
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enter_cat_mode1 unless $mode == CAT_MODE;
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print "COMMIT\n";
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}
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enter_cmd_mode1;
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pop_indent;
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print "\n";
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}
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#
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# Generate the netfilter input for refreshing a list of chains
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#
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@ -562,8 +562,8 @@ EOF
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#
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sub compiler {
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my ( $scriptfilename, $directory, $verbosity, $timestamp , $debug, $chains , $log , $log_verbosity ) =
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( '', '', -1, '', 0, '', '', -1 );
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my ( $scriptfilename, $directory, $verbosity, $timestamp , $debug, $chains , $log , $log_verbosity, $preview ) =
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( '', '', -1, '', 0, '', '', -1, 0 );
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$export = 0;
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$test = 0;
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@ -595,6 +595,7 @@ sub compiler {
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log => { store => \$log },
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log_verbosity => { store => \$log_verbosity, validate => \&validate_verbosity } ,
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test => { store => \$test },
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preview => { store => \$preview },
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);
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#
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# P A R A M E T E R P R O C E S S I N G
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@ -866,6 +867,23 @@ sub compiler {
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#
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enable_script, generate_aux_config if $export;
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} else {
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if ( $preview ) {
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generate_matrix;
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if ( $config{OPTIMIZE} & 6 ) {
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progress_message2 'Optimizing Ruleset...';
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#
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# Optimize Policy Chains
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#
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optimize_policy_chains if $config{OPTIMIZE} & 2;
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#
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# More Optimization
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#
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optimize_ruleset if $config{OPTIMIZE} & 4;
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}
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preview_netfilter_load;
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}
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#
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# Re-initialize the chain table so that process_routestopped() has the same
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# environment that it would when called by compile_stop_firewall().
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@ -36,6 +36,7 @@
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# --log=<filename> # Log file
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# --log_verbosity=<number> # Log Verbosity range -1 to 2
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# --family=<number> # IP family; 4 = IPv4 (default), 6 = IPv6
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# --preview # Preview the ruleset.
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#
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use strict;
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use FindBin;
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@ -58,6 +59,7 @@ sub usage( $ ) {
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[ --log=<filename> ]
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[ --log-verbose={-1|0-2} ]
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[ --test ]
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[ --preview ]
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[ --family={4|6} ]
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';
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@ -78,6 +80,7 @@ my $log_verbose = 0;
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my $help = 0;
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my $test = 0;
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my $family = 4; # F_IPV4
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my $preview = 0;
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Getopt::Long::Configure ('bundling');
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@ -98,6 +101,7 @@ my $result = GetOptions('h' => \$help,
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'l=s' => \$log,
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'log_verbosity=i' => \$log_verbose,
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'test' => \$test,
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'preview' => \$preview,
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'f=i' => \$family,
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'family=i' => \$family,
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);
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@ -115,4 +119,5 @@ compiler( script => defined $ARGV[0] ? $ARGV[0] : '',
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log => $log,
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log_verbosity => $log_verbose,
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test => $test,
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preview => $preview,
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family => $family );
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@ -14,6 +14,8 @@ Changes in Shorewall 4.4.6
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7) Add 'show macro' command.
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8) Add -p option to check.
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Changes in Shorewall 4.4.5
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1) Fix 15-port limit removal change.
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@ -49,6 +49,9 @@ Shorewall 4.4.6
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you to trace selected packets through Netfilter, including marking
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by tcrules.
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12) You may now preview the generated ruleset by using the '-r' option
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to the 'check' command (e.g., "shorewall check -r").
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----------------------------------------------------------------------------
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M I G R A T I O N I S S U E S
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----------------------------------------------------------------------------
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@ -265,6 +268,12 @@ None.
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The command displays the contents of the macro.<macro> file.
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6) You may now preview the generated ruleset by using the '-r' option
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to the 'check' command (e.g., "shorewall check -r").
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The output is a shell script fragment, similar to the way it
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appears in the generated script.
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----------------------------------------------------------------------------
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N E W F E A T U R E S I N 4 . 4 . 0
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----------------------------------------------------------------------------
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@ -362,6 +362,7 @@ compiler() {
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[ -n "$SHOREWALL_DIR" ] && options="$options --directory=$SHOREWALL_DIR"
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[ -n "$TIMESTAMP" ] && options="$options --timestamp"
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[ -n "$TEST" ] && options="$options --test"
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[ -n "$PREVIEW" ] && options="$options --preview"
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[ "$debugging" = trace ] && options="$options --debug"
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[ -n "$REFRESHCHAINS" ] && options="$options --refresh=$REFRESHCHAINS"
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#
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@ -642,6 +643,10 @@ check_command() {
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DEBUG=Yes;
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option=${option#d}
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;;
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r*)
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PREVIEW=Yes;
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option=${option#r}
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;;
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*)
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usage 1
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;;
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@ -1351,7 +1356,7 @@ usage() # $1 = exit status
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echo "where <command> is one of:"
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echo " add <interface>[:<host-list>] ... <zone>"
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echo " allow <address> ..."
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echo " check [ -e ] [ <directory> ]"
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echo " check [ -e ] [ -r ] [ <directory> ]"
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echo " clear [ -f ]"
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echo " compile [ -e ] [ -d ] [ <directory name> ] [ <path name> ]"
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echo " delete <interface>[:<host-list>] ... <zone>"
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@ -279,6 +279,7 @@ compiler() {
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[ -n "$SHOREWALL_DIR" ] && options="$options --directory=$SHOREWALL_DIR"
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[ -n "$TIMESTAMP" ] && options="$options --timestamp"
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[ -n "$TEST" ] && options="$options --test"
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[ -n "$PREVIEW" ] && options="$options --preview"
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[ "$debugging" = trace ] && options="$options --debug"
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[ -n "$REFRESHCHAINS" ] && options="$options --refresh=$REFRESHCHAINS"
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[ -x $pc ] || startup_error "Shorewall6 requires the shorewall package which is not installed"
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@ -552,6 +553,10 @@ check_command() {
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PROFILE=Yes
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option=${option#p}
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;;
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r*)
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PREVIEW=Yes;
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option=${option#r}
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;;
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d*)
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DEBUG=Yes;
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option=${option#d}
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@ -1267,7 +1272,7 @@ usage() # $1 = exit status
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echo "where <command> is one of:"
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echo " add <interface>[:<host-list>] ... <zone>"
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echo " allow <address> ..."
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echo " check [ -e ] [ <directory> ]"
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echo " check [ -e ] [ -r ] [ <directory> ]"
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echo " clear [ -f ]"
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echo " compile [ -e ] [ -d ] [ <directory name> ] [ <path name> ]"
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echo " delete <interface>[:<host-list>] ... <zone>"
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@ -60,6 +60,8 @@
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<arg><option>-p</option></arg>
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<arg><option>-r</option></arg>
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<arg><replaceable>directory</replaceable></arg>
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</cmdsynopsis>
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@ -720,6 +722,10 @@
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<para>The <option>-p</option> option causes the compiler to be
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profiled via the Perl <option>-wd:DProf</option> command-line
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option.</para>
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<para>The <option>-r</option> option was added in Shorewall 4.5.2
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and causes the compiler to print the generated ruleset to standard
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out.</para>
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</listitem>
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</varlistentry>
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@ -44,6 +44,8 @@
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<arg><option>-p</option></arg>
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<arg><option>-r</option></arg>
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<arg><replaceable>directory</replaceable></arg>
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</cmdsynopsis>
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@ -584,6 +586,10 @@
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<para>The <option>-p</option> option causes the compiler to be
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profiled via the Perl <option>-wd:DProf</option> command-line
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option.</para>
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<para>The <option>-r</option> option was added in Shorewall 4.5.2
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and causes the compiler to print the generated ruleset to standard
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out.</para>
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</listitem>
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</varlistentry>
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