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Fix MAC handling in the ARP module

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2013-01-04 15:55:52 -08:00
parent a732f6e538
commit af7b7195d2
1 changed files with 16 additions and 23 deletions
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35
Shorewall/Perl/Shorewall/ARP.pm
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@ -63,11 +63,11 @@ sub match_arp_net( $$$ ) {
} }
if ( supplied $mac ) { if ( supplied $mac ) {
my ( $addr , $mask ) = split( $mac , '/', 2 ); my ( $addr , $mask ) = split( '/', $mac, 2 );
my $invert = ( $addr =~ s/^!// ) ? '! ' : ''; my $invert = ( $addr =~ s/^!// ) ? '! ' : '';
fatal_error "Invalid MAC address ($net)" unless $addr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; fatal_error "Invalid MAC address ($addr)" unless $addr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
if ( supplied $mask ) { if ( supplied $mask ) {
fatal_error "Invalid MAC Mask ($mask)" unless $mask =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; fatal_error "Invalid MAC Mask ($mask)" unless $mask =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
$return .= $source ? "$sourcemac $invert$addr/$mask " : "$destmac $invert$addr/mask "; $return .= $source ? "$sourcemac $invert$addr/$mask " : "$destmac $invert$addr/mask ";
@ -105,33 +105,30 @@ sub process_arprule() {
DNAT => sub() { validate_address $newaddr, 0; DNAT => sub() { validate_address $newaddr, 0;
$rule .= "-j mangle --mangle-ip-d $newaddr"; }, $rule .= "-j mangle --mangle-ip-d $newaddr"; },
SMAT => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; SMAT => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
$rule .= "-j mangle --mangle-mac-s $newaddr"; }, $rule .= "--h-length 6 -j mangle --mangle-mac-s $newaddr"; },
DMAT => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; DMAT => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
$rule .= "-j mangle --mangle-mac-d $newaddr"; }, $rule .= "--h-length 6 -j mangle --mangle-mac-d $newaddr"; },
SNATC => sub() { validate_address $newaddr, 0; SNATC => sub() { validate_address $newaddr, 0;
$rule .= "-j mangle --mangle-ip-s $newaddr --mangle-target CONTINUE"; }, $rule .= "-j mangle --mangle-ip-s $newaddr --mangle-target CONTINUE"; },
DNATC => sub() { validate_address $newaddr, 0; DNATC => sub() { validate_address $newaddr, 0;
$rule .= "-j mangle --mangle-ip-d $newaddr --mangle-target CONTINUE"; }, $rule .= "-j mangle --mangle-ip-d $newaddr --mangle-target CONTINUE"; },
SMATC => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; SMATC => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
$rule .= "-j mangle --mangle-mac-s $newaddr--mangle-target CONTINUE"; }, $rule .= "--h-length 6 -j mangle --mangle-mac-s $newaddr --mangle-target CONTINUE"; },
DMATC => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/; DMATC => sub() { fatal_error "Invalid MAC address ($newaddr)" unless $newaddr =~ /^(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/;
$rule .= "-j mangle --mangle-mac-d $newaddr --mangle-target CONTINUE"; }, $rule .= "--h-length 6 -j mangle --mangle-mac-d $newaddr --mangle-target CONTINUE"; },
); );
if ( supplied $newaddr ) { if ( supplied $newaddr ) {
fatal_error "The $action ACTION does not allow a new address" unless $action =~ /^SNAT|DNAT|SMAT|DMAT$/; fatal_error "The $action ACTION does not allow a new address" unless $action =~ /^SNAT|DNAT|SMAT|DMAT$/;
} else { } else {
fatal_error "The $action ACTION requires a new address" if $action =~ /^SNAT|DNAT|SMAT|DMAT$/;
fatal_error "Invalid ACTION ($action)" unless $action =~ /^DROP|ACCEPT$/; fatal_error "Invalid ACTION ($action)" unless $action =~ /^DROP|ACCEPT$/;
} }
if ( $source ne '-' ) { if ( $source ne '-' ) {
if ( $source =~ /^(.+?):(.*)(?::(.*))?/ ) { ( $iiface, $saddr, $smac ) = split /:/, $source, 3;
$iiface = $1;
$saddr = $2; fatal_error "SOURCE interface missing" unless supplied $iiface;
$smac = $3;
} else {
$iiface = $source;
}
$iiface = find_interface( $iiface )->{physical}; $iiface = find_interface( $iiface )->{physical};
@ -143,13 +140,9 @@ sub process_arprule() {
} }
if ( $dest ne '-' ) { if ( $dest ne '-' ) {
if ( $dest =~ /^(.+?):(.*)(?::(.*))?/ ) { ( $diface, $daddr, $dmac ) = split /:/, $dest, 3;
$diface = $1;
$daddr = $2; fatal_error "DEST interface missing" unless supplied $diface;
$dmac = $3;
} else {
$diface = $dest;
}
$diface = find_interface( $diface )->{physical}; $diface = find_interface( $diface )->{physical};
@ -201,7 +194,7 @@ sub process_arprules() {
$arp_forward = $arp_table{FORWARD} = []; $arp_forward = $arp_table{FORWARD} = [];
@builtins = qw( INPUT OUTPUT FORWARD ); @builtins = qw( INPUT OUTPUT FORWARD );
$sourcemac = '--source-mac'; $sourcemac = '--source-mac';
$destmac = '--dest-mac'; $destmac = '--destination-mac';
} }
my $fn = open_file 'arprules'; my $fn = open_file 'arprules';