62 lines
1.6 KiB
Perl
62 lines
1.6 KiB
Perl
#!/usr/bin/perl -w
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#
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#
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# A script that generates text output of the ebtables rules.
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# Similar to iptables-save.
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#
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# It can be used to store active configuration to /etc/sysconfig/ebtables
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use strict;
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my $table;
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my $ebtables = "__EXEC_PATH__/ebtables";
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my $cnt = "";
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my $version = "1.0";
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my $table_name;
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# ========================================================
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# Process filter table
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# ========================================================
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sub process_table {
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my $chain = "";
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my $rules = "";
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my $chains = "";
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my $line = "";
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foreach $line (split("\n",$_[0])) {
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if ($line =~ m/Bridge table: (.*)/) {
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print "*$1\n";
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next;
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}
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if ($line =~ m/Bridge chain: (.*?), entries:.* policy: (.*)/) {
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$chains = $chains . ":$1 $2\n";
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$chain = $1;
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next;
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}
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if ($line =~ m/^$/) {
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next;
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}
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if ($cnt eq "--Lc") {
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$line =~ s/, pcnt = (.*) -- bcnt = (.*)/-c $1 $2/;
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} else {
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$line =~ s/ $//;
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}
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$rules = $rules . "-A $chain $line\n";
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}
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print $chains;
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print $rules;
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print "\n";
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}
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# ========================================================
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unless (-x $ebtables) { exit -1 };
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print "# Generated by ebtables-save v$version on " . `date`;
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if (defined($ENV{'EBTABLES_SAVE_COUNTER'}) && $ENV{'EBTABLES_SAVE_COUNTER'} eq "yes") {
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$cnt = "--Lc";
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}
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foreach $table_name (split("\n", `grep -E '^ebtable_' /proc/modules | cut -f1 -d' ' | sed s/ebtable_//`)) {
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$table =`$ebtables -t $table_name -L $cnt`;
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unless ($? == 0) { print $table; exit -1 };
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&process_table($table);
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}
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