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https://gitlab.com/shorewall/code.git
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Add prog.headers6
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8954 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep
parent
65745cd6a2
commit
aadf5e41c6
@ -253,8 +253,8 @@ our $Product;
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use constant { MIN_VERBOSITY => -1,
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MAX_VERBOSITY => 2 ,
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F_IPV4 => 1,
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F_IPV6 => 2,
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F_IPV4 => 4,
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F_IPV6 => 6,
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};
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#
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@ -34,6 +34,15 @@ use strict;
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our @ISA = qw(Exporter);
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our @EXPORT = qw( ALLIPv4
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ALLIPv6
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IPv6_MULTICAST
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IPv6_LINKLOCAL
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IPv6_SITELOCAL
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IPv6_LINKLOCAL
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IPv6_LOOPBACK
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IPv6_LINK_ALLNODES
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IPv6_LINK_ALLRTRS
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IPv6_SITE_ALLNODES
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IPv6_SITE_ALLRTRS
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ALLIP
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ALL
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TCP
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@ -71,14 +80,23 @@ our @allipv4 = ( '0.0.0.0/0' );
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our @allipv6 = ( '::/0' );
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our $family;
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use constant { ALLIPv4 => '0.0.0.0/0' ,
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ALLIPv6 => '::/0' ,
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ICMP => 1,
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TCP => 6,
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UDP => 17,
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DCCP => 33,
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IPv6_ICMP => 58,
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SCTP => 132 };
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use constant { ALLIPv4 => '0.0.0.0/0' ,
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ALLIPv6 => '::/0' ,
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IPv6_MULTICAST => 'FF00::/10' ,
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IPv6_LINKLOCAL => 'FF80::/10' ,
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IPv6_SITELOCAL => 'FFC0::/10' ,
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IPv6_LINKLOCAL => 'FF80::/10' ,
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IPv6_LOOPBACK => '::1' ,
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IPv6_LINK_ALLNODES => 'FF01::1' ,
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IPv6_LINK_ALLRTRS => 'FF01::2' ,
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IPv6_SITE_ALLNODES => 'FF02::1' ,
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IPv6_SITE_ALLRTRS => 'FF02::2' ,
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ICMP => 1,
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TCP => 6,
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UDP => 17,
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DCCP => 33,
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IPv6_ICMP => 58,
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SCTP => 132 };
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our @rfc1918_networks = ( "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16" );
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@ -528,11 +528,11 @@ sub add_common_rules() {
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setup_blacklist;
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$list = find_hosts_by_option 'nosmurfs';
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$chainref = new_standard_chain 'smurfs';
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if ( $family == F_IPV4 ) {
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$list = find_hosts_by_option 'nosmurfs';
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$chainref = new_standard_chain 'smurfs';
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if ( $capabilities{ADDRTYPE} ) {
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add_rule $chainref , '-s 0.0.0.0 -j RETURN';
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add_rule_pair $chainref, '-m addrtype --src-type BROADCAST ', 'DROP', $config{SMURF_LOG_LEVEL} ;
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@ -546,20 +546,24 @@ sub add_common_rules() {
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}
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add_rule_pair $chainref, '-s 224.0.0.0/4 ', 'DROP', $config{SMURF_LOG_LEVEL} ;
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}
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if ( $capabilities{ADDRTYPE} ) {
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add_rule $rejectref , '-m addrtype --src-type BROADCAST -j DROP';
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if ( $capabilities{ADDRTYPE} ) {
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add_rule $rejectref , '-m addrtype --src-type BROADCAST -j DROP';
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} else {
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add_command $rejectref, 'for address in $ALL_BCASTS; do';
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incr_cmd_level $rejectref;
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add_rule $rejectref, '-d $address -j DROP';
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decr_cmd_level $rejectref;
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add_command $rejectref, 'done';
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}
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add_rule $rejectref , '-s 224.0.0.0/4 -j DROP';
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} else {
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add_command $rejectref, 'for address in $ALL_BCASTS; do';
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incr_cmd_level $rejectref;
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add_rule $rejectref, '-d $address -j DROP';
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decr_cmd_level $rejectref;
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add_command $rejectref, 'done';
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my $predicate = '-s ' . IPv6_MULTICAST . ' ';
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add_rule_pair $chainref , $predicate, 'DROP' , $config{SMURF_LOG_LEVEL};
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add_rule $rejectref, "$predicate -j DROP";
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}
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add_rule $rejectref , '-s 224.0.0.0/4 -j DROP';
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if ( @$list ) {
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progress_message2 'Adding Anti-smurf Rules';
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for my $hostref ( @$list ) {
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@ -583,21 +587,21 @@ sub add_common_rules() {
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add_rule $rejectref , '-j REJECT';
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}
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$list = find_interfaces_by_option 'dhcp';
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if ( @$list ) {
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progress_message2 'Adding rules for DHCP';
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for $interface ( @$list ) {
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for $chain ( input_chain $interface, output_chain $interface ) {
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add_rule $filter_table->{$chain} , '-p udp --dport 67:68 -j ACCEPT';
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}
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add_rule $filter_table->{forward_chain $interface} , "-p udp -o $interface --dport 67:68 -j ACCEPT" if get_interface_option( $interface, 'bridge' );
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}
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}
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if ( $family == F_IPV4 ) {
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$list = find_interfaces_by_option 'dhcp';
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if ( @$list ) {
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progress_message2 'Adding rules for DHCP';
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for $interface ( @$list ) {
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for $chain ( input_chain $interface, output_chain $interface ) {
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add_rule $filter_table->{$chain} , '-p udp --dport 67:68 -j ACCEPT';
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}
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add_rule $filter_table->{forward_chain $interface} , "-p udp -o $interface --dport 67:68 -j ACCEPT" if get_interface_option( $interface, 'bridge' );
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}
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}
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$list = find_hosts_by_option 'norfc1918';
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setup_rfc1918_filteration $list if @$list;
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}
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@ -799,24 +803,32 @@ sub setup_mac_lists( $ ) {
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add_commands( $chainref,
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"for address in $variable; do" );
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if ( $bridgeref->{broadcasts} ) {
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for my $address ( @{$bridgeref->{broadcasts}}, '255.255.255.255' ) {
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add_commands( $chainref ,
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" echo \"-A $chainref->{name} -s \$address -d $address -j RETURN\" >&3" );
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if ( $family == F_IPV4 ) {
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if ( $bridgeref->{broadcasts} ) {
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for my $address ( @{$bridgeref->{broadcasts}}, '255.255.255.255' ) {
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add_commands( $chainref ,
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" echo \"-A $chainref->{name} -s \$address -d $address -j RETURN\" >&3" );
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}
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} else {
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my $variable1 = get_interface_bcasts $bridge;
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add_commands( $chainref,
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" for address1 in $variable1; do" ,
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" echo \"-A $chainref->{name} -s \$address -d \$address1 -j RETURN\" >&3",
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" done" );
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}
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add_commands( $chainref, " echo \"-A $chainref->{name} -s \$address -d 224.0.0.0/4 -j RETURN\" >&3" );
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} else {
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my $variable1 = get_interface_bcasts $bridge;
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add_commands( $chainref,
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" for address1 in $variable1; do" ,
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" echo \"-A $chainref->{name} -s \$address -d \$address1 -j RETURN\" >&3",
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" done" );
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}
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add_commands( $chainref,
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" echo \"-A $chainref->{name} -s \$address -d 224.0.0.0/4 -j RETURN\" >&3",
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'done' );
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add_command( $chainref, 'done' );
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}
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}
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871
Shorewall-perl/prog.header6
Normal file
871
Shorewall-perl/prog.header6
Normal file
@ -0,0 +1,871 @@
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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) 1999-2008 - Tom Eastep (teastep@shorewall.net)
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#
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# Options are:
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#
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# -n Don't alter Routing
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# -v and -q Standard Shorewall Verbosity control
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#
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# Commands are:
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#
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# start Starts the firewall
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# refresh Refresh the firewall
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# restart Restarts the firewall
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# reload Reload the firewall
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# clear Removes all firewall rules
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# stop Stops the firewall
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# status Displays firewall status
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# version Displays the version of Shorewall that
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# generated this program
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#
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################################################################################
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# Functions imported from /usr/share/shorewall/lib.base
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################################################################################
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#
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# Message to stderr
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#
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error_message() # $* = Error Message
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{
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echo " $@" >&2
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}
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#
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# Conditionally produce message
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#
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progress_message() # $* = Message
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{
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local timestamp
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timestamp=
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if [ $VERBOSE -gt 1 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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if [ $LOG_VERBOSE -gt 1 ]; then
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timestamp="$(date +'%b %_d %T') "
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echo "${timestamp}$@" >> $STARTUP_LOG
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fi
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}
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progress_message2() # $* = Message
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{
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local timestamp
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timestamp=
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if [ $VERBOSE -gt 0 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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if [ $LOG_VERBOSE -gt 0 ]; then
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timestamp="$(date +'%b %_d %T') "
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echo "${timestamp}$@" >> $STARTUP_LOG
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fi
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}
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progress_message3() # $* = Message
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{
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local timestamp
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timestamp=
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if [ $VERBOSE -ge 0 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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if [ $LOG_VERBOSE -ge 0 ]; then
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timestamp="$(date +'%b %_d %T') "
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echo "${timestamp}$@" >> $STARTUP_LOG
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fi
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}
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#
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# Split a colon-separated list into a space-separated list
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#
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split() {
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local ifs
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ifs=$IFS
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IFS=:
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echo $*
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IFS=$ifs
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}
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#
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# Search a list looking for a match -- returns zero if a match found
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# 1 otherwise
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#
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list_search() # $1 = element to search for , $2-$n = list
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{
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local e
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e=$1
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while [ $# -gt 1 ]; do
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shift
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[ "x$e" = "x$1" ] && return 0
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done
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return 1
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}
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#
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# Suppress all output for a command
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#
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qt()
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{
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"$@" >/dev/null 2>&1
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}
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qt1()
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{
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local status
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while [ 1 ]; do
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"$@" >/dev/null 2>&1
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status=$?
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[ $status -ne 4 ] && return $status
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done
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}
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#
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# Determine if Shorewall is "running"
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#
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shorewall_is_started() {
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qt1 $IPTABLES -L shorewall -n
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}
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#
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# Echos the fully-qualified name of the calling shell program
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#
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my_pathname() {
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cd $(dirname $0)
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echo $PWD/$(basename $0)
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}
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#
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# Source a user exit file if it exists
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#
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run_user_exit() # $1 = file name
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{
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local user_exit
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user_exit=$(find_file $1)
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if [ -f $user_exit ]; then
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progress_message "Processing $user_exit ..."
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. $user_exit
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fi
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}
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#
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# Set a standard chain's policy
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#
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setpolicy() # $1 = name of chain, $2 = policy
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{
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run_iptables -P $1 $2
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}
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#
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# Set a standard chain to enable established and related connections
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#
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setcontinue() # $1 = name of chain
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{
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run_iptables -A $1 -m state --state ESTABLISHED,RELATED -j ACCEPT
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}
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#
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# Flush one of the Mangle table chains
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#
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flushmangle() # $1 = name of chain
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{
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run_iptables -t mangle -F $1
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}
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#
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# Flush and delete all user-defined chains in the filter table
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#
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deleteallchains() {
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run_iptables -F
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run_iptables -X
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}
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#
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# Load a Kernel Module -- assumes that the variable 'moduledirectories' contains
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# a space-separated list of directories to search for
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# the module and that 'moduleloader' contains the
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# module loader command.
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#
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loadmodule() # $1 = module name, $2 - * arguments
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{
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local modulename
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modulename=$1
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local modulefile
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local suffix
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if ! list_search $modulename $DONT_LOAD $MODULES; then
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shift
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for suffix in $MODULE_SUFFIX ; do
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for directory in $moduledirectories; do
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modulefile=$directory/${modulename}.${suffix}
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if [ -f $modulefile ]; then
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case $moduleloader in
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insmod)
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insmod $modulefile $*
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;;
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*)
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modprobe $modulename $*
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;;
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esac
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break 2
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fi
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done
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done
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fi
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}
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#
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# Reload the Modules
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#
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reload_kernel_modules() {
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local save_modules_dir
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save_modules_dir=$MODULESDIR
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local directory
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local moduledirectories
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moduledirectories=
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local moduleloader
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moduleloader=modprobe
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if ! qt mywhich modprobe; then
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moduleloader=insmod
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fi
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[ -n "${MODULE_SUFFIX:=o gz ko o.gz ko.gz}" ]
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[ -z "$MODULESDIR" ] && MODULESDIR=/lib/modules/$(uname -r)/kernel/net/ipv6/netfilter:/lib/modules/$(uname -r)/kernel/net/netfilter
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MODULES=$(lsmod | cut -d ' ' -f1)
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for directory in $(split $MODULESDIR); do
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[ -d $directory ] && moduledirectories="$moduledirectories $directory"
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done
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[ -n "$moduledirectories" ] && while read command; do
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eval $command
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done
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MODULESDIR=$save_modules_dir
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}
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#
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# Load kernel modules required for Shorewall
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#
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load_kernel_modules() # $1 = Yes, if we are to save moduleinfo in $VARDIR
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{
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local save_modules_dir
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save_modules_dir=$MODULESDIR
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local directory
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local moduledirectories
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moduledirectories=
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local moduleloader
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moduleloader=modprobe
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local savemoduleinfo
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savemoduleinfo=${1:-Yes} # So old compiled scripts still work
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if ! qt mywhich modprobe; then
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moduleloader=insmod
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fi
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[ -n "${MODULE_SUFFIX:=o gz ko o.gz ko.gz}" ]
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[ -z "$MODULESDIR" ] && \
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MODULESDIR=/lib/modules/$(uname -r)/kernel/net/ipv6/netfilter:/lib/modules/$(uname -r)/kernel/net/netfilter
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for directory in $(split $MODULESDIR); do
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[ -d $directory ] && moduledirectories="$moduledirectories $directory"
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done
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modules=$(find_file modules)
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if [ -f $modules -a -n "$moduledirectories" ]; then
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MODULES=$(lsmod | cut -d ' ' -f1)
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progress_message "Loading Modules..."
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. $modules
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if [ $savemoduleinfo = Yes ]; then
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[ -d ${VARDIR} ] || mkdir -p ${VARDIR}
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echo MODULESDIR="$MODULESDIR" > ${VARDIR}/.modulesdir
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cp -f $modules ${VARDIR}/.modules
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fi
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elif [ $savemoduleinfo = Yes ]; then
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[ -d ${VARDIR} ] || mkdir -p ${VARDIR}
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> ${VARDIR}/.modulesdir
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> ${VARDIR}/.modules
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fi
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MODULESDIR=$save_modules_dir
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}
|
||||
|
||||
#
|
||||
# Query NetFilter about the existence of a filter chain
|
||||
#
|
||||
chain_exists() # $1 = chain name
|
||||
{
|
||||
qt1 $IPTABLES -L $1 -n
|
||||
}
|
||||
|
||||
#
|
||||
# Find the value 'dev' in the passed arguments then echo the next value
|
||||
#
|
||||
|
||||
find_device() {
|
||||
while [ $# -gt 1 ]; do
|
||||
[ "x$1" = xdev ] && echo $2 && return
|
||||
shift
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Find the value 'via' in the passed arguments then echo the next value
|
||||
#
|
||||
|
||||
find_gateway() {
|
||||
while [ $# -gt 1 ]; do
|
||||
[ "x$1" = xvia ] && echo $2 && return
|
||||
shift
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Find the value 'mtu' in the passed arguments then echo the next value
|
||||
#
|
||||
|
||||
find_mtu() {
|
||||
while [ $# -gt 1 ]; do
|
||||
[ "x$1" = xmtu ] && echo $2 && return
|
||||
shift
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Find the value 'peer' in the passed arguments then echo the next value up to
|
||||
# "/"
|
||||
#
|
||||
|
||||
find_peer() {
|
||||
while [ $# -gt 1 ]; do
|
||||
[ "x$1" = xpeer ] && echo ${2%/*} && return
|
||||
shift
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Try to find the gateway through an interface looking for 'nexthop'
|
||||
|
||||
find_nexthop() # $1 = interface
|
||||
{
|
||||
echo $(find_gateway `ip -6 route list | grep "[[:space:]]nexthop.* $1"`)
|
||||
}
|
||||
|
||||
#
|
||||
# Find the default route's interface
|
||||
#
|
||||
find_default_interface() {
|
||||
ip -6 route list | while read first rest; do
|
||||
[ "$first" = default ] && echo $(find_device $rest) && return
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Find the interface with the passed MAC address
|
||||
#
|
||||
|
||||
find_interface_by_mac() {
|
||||
local mac
|
||||
mac=$1
|
||||
local first
|
||||
local second
|
||||
local rest
|
||||
local dev
|
||||
|
||||
ip link list | while read first second rest; do
|
||||
case $first in
|
||||
*:)
|
||||
dev=$second
|
||||
;;
|
||||
*)
|
||||
if [ "$second" = $mac ]; then
|
||||
echo ${dev%:}
|
||||
return
|
||||
fi
|
||||
esac
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Determine if Interface is up
|
||||
#
|
||||
interface_is_up() {
|
||||
[ -n "$(ip link list dev $1 2> /dev/null | grep -e '[<,]UP[,>]')" ]
|
||||
}
|
||||
|
||||
#
|
||||
# Find interface address--returns the first IP address assigned to the passed
|
||||
# device
|
||||
#
|
||||
find_first_interface_address() # $1 = interface
|
||||
{
|
||||
#
|
||||
# get the line of output containing the first IP address
|
||||
#
|
||||
addr=$(ip -f inet addr show $1 2> /dev/null | grep 'inet6 .* global' | head -n1)
|
||||
#
|
||||
# If there wasn't one, bail out now
|
||||
#
|
||||
[ -n "$addr" ] || fatal_error "Can't determine the IPv6 address of $1"
|
||||
#
|
||||
# Strip off the trailing VLSM mask (or the peer IP in case of a P-t-P link)
|
||||
# along with everything else on the line
|
||||
#
|
||||
echo $addr | sed 's/\s*inet //;s/\/.*//;s/ peer.*//'
|
||||
}
|
||||
|
||||
find_first_interface_address_if_any() # $1 = interface
|
||||
{
|
||||
#
|
||||
# get the line of output containing the first IP address
|
||||
#
|
||||
addr=$(ip -f inet addr show $1 2> /dev/null | grep 'inet .* global' | head -n1)
|
||||
#
|
||||
# Strip off the trailing VLSM mask (or the peer IP in case of a P-t-P link)
|
||||
# along with everything else on the line
|
||||
#
|
||||
[ -n "$addr" ] && echo $addr | sed 's/\s*inet //;s/\/.*//;s/ peer.*//' || echo 0.0.0.0
|
||||
}
|
||||
|
||||
#
|
||||
# Determine if interface is usable from a Netfilter prespective
|
||||
#
|
||||
interface_is_usable() # $1 = interface
|
||||
{
|
||||
interface_is_up $1 && [ "$(find_first_interface_address_if_any $1)" != 0.0.0.0 ] && run_isusable_exit $1
|
||||
}
|
||||
|
||||
#
|
||||
# Find interface addresses--returns the set of addresses assigned to the passed
|
||||
# device
|
||||
#
|
||||
find_interface_addresses() # $1 = interface
|
||||
{
|
||||
ip -f inet addr show $1 2> /dev/null | grep inet\ | sed 's/\s*inet //;s/\/.*//;s/ peer.*//'
|
||||
}
|
||||
|
||||
#
|
||||
# echo the list of networks routed out of a given interface
|
||||
#
|
||||
get_routed_networks() # $1 = interface name, $2-n = Fatal error message
|
||||
{
|
||||
local address
|
||||
local rest
|
||||
|
||||
ip route show dev $1 2> /dev/null |
|
||||
while read address rest; do
|
||||
case "$address" in
|
||||
default)
|
||||
if [ $# -gt 1 ]; then
|
||||
shift
|
||||
fatal_error "$@"
|
||||
else
|
||||
echo "WARNING: default route ignored on interface $1" >&2
|
||||
fi
|
||||
;;
|
||||
multicast|broadcast|prohibit|nat|throw|nexthop)
|
||||
;;
|
||||
*)
|
||||
[ "$address" = "${address%/*}" ] && address="${address}/32"
|
||||
echo $address
|
||||
;;
|
||||
esac
|
||||
done
|
||||
}
|
||||
|
||||
get_interface_bcasts() # $1 = interface
|
||||
{
|
||||
local addresses
|
||||
addresses=
|
||||
|
||||
ip -f inet addr show dev $1 2> /dev/null | grep 'inet.*brd' | sed 's/inet.*brd //; s/scope.*//;' | sort -u
|
||||
}
|
||||
|
||||
#
|
||||
# Internal version of 'which'
|
||||
#
|
||||
mywhich() {
|
||||
local dir
|
||||
|
||||
for dir in $(split $PATH); do
|
||||
if [ -x $dir/$1 ]; then
|
||||
echo $dir/$1
|
||||
return 0
|
||||
fi
|
||||
done
|
||||
|
||||
return 2
|
||||
}
|
||||
|
||||
#
|
||||
# Find a File -- For relative file name, look in each ${CONFIG_PATH} then ${CONFDIR}
|
||||
#
|
||||
find_file()
|
||||
{
|
||||
local saveifs
|
||||
saveifs=
|
||||
local directory
|
||||
|
||||
case $1 in
|
||||
/*)
|
||||
echo $1
|
||||
;;
|
||||
*)
|
||||
for directory in $(split $CONFIG_PATH); do
|
||||
if [ -f $directory/$1 ]; then
|
||||
echo $directory/$1
|
||||
return
|
||||
fi
|
||||
done
|
||||
|
||||
echo ${CONFDIR}/$1
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
#
|
||||
# Set the Shorewall state
|
||||
#
|
||||
set_state () # $1 = state
|
||||
{
|
||||
echo "$1 ($(date))" > ${VARDIR}/state
|
||||
}
|
||||
|
||||
#
|
||||
# Perform variable substitution on the passed argument and echo the result
|
||||
#
|
||||
expand() # $@ = contents of variable which may be the name of another variable
|
||||
{
|
||||
eval echo \"$@\"
|
||||
}
|
||||
|
||||
#
|
||||
# Function for including one file into another
|
||||
#
|
||||
INCLUDE() {
|
||||
. $(find_file $(expand $@))
|
||||
}
|
||||
|
||||
#
|
||||
# Delete IP address
|
||||
#
|
||||
del_ip_addr() # $1 = address, $2 = interface
|
||||
{
|
||||
[ $(find_first_interface_address_if_any $2) = $1 ] || qt ip addr del $1 dev $2
|
||||
}
|
||||
|
||||
# Add IP Aliases
|
||||
#
|
||||
add_ip_aliases() # $* = List of addresses
|
||||
{
|
||||
local local
|
||||
local addresses
|
||||
local external
|
||||
local interface
|
||||
local inet
|
||||
local cidr
|
||||
local rest
|
||||
local val
|
||||
local arping
|
||||
arping=$(mywhich arping)
|
||||
|
||||
address_details()
|
||||
{
|
||||
#
|
||||
# Folks feel uneasy if they don't see all of the same
|
||||
# decoration on these IP addresses that they see when their
|
||||
# distro's net config tool adds them. In an attempt to reduce
|
||||
# the anxiety level, we have the following code which sets
|
||||
# the VLSM and BRD from an existing address in the same networks
|
||||
#
|
||||
# Get all of the lines that contain inet addresses with broadcast
|
||||
#
|
||||
ip -f inet addr show $interface 2> /dev/null | grep 'inet.*brd' | while read inet cidr rest ; do
|
||||
case $cidr in
|
||||
*/*)
|
||||
if in_network $external $cidr; then
|
||||
echo "/${cidr#*/} brd $(broadcastaddress $cidr)"
|
||||
break
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
done
|
||||
}
|
||||
|
||||
do_one()
|
||||
{
|
||||
val=$(address_details)
|
||||
|
||||
ip addr add ${external}${val} dev $interface $label
|
||||
[ -n "$arping" ] && qt $arping -U -c 2 -I $interface $external
|
||||
echo "$external $interface" >> $VARDIR/nat
|
||||
[ -n "$label" ] && label="with $label"
|
||||
progress_message " IP Address $external added to interface $interface $label"
|
||||
}
|
||||
|
||||
progress_message "Adding IP Addresses..."
|
||||
|
||||
while [ $# -gt 0 ]; do
|
||||
external=$1
|
||||
interface=$2
|
||||
label=
|
||||
|
||||
if [ "$interface" != "${interface%:*}" ]; then
|
||||
label="${interface#*:}"
|
||||
interface="${interface%:*}"
|
||||
label="label $interface:$label"
|
||||
fi
|
||||
|
||||
shift 2
|
||||
|
||||
list_search $external $(find_interface_addresses $interface) || do_one
|
||||
done
|
||||
}
|
||||
|
||||
detect_gateway() # $1 = interface
|
||||
{
|
||||
local interface
|
||||
interface=$1
|
||||
#
|
||||
# First assume that this is some sort of point-to-point interface
|
||||
#
|
||||
gateway=$( find_peer $(ip addr list $interface ) )
|
||||
#
|
||||
# Maybe there's a default route through this gateway already
|
||||
#
|
||||
[ -n "$gateway" ] || gateway=$(find_gateway $(ip route list dev $interface))
|
||||
#
|
||||
# Last hope -- is there a load-balancing route through the interface?
|
||||
#
|
||||
[ -n "$gateway" ] || gateway=$(find_nexthop $interface)
|
||||
#
|
||||
# Be sure we found one
|
||||
#
|
||||
[ -n "$gateway" ] && echo $gateway
|
||||
}
|
||||
|
||||
#
|
||||
# Disable IPV6
|
||||
#
|
||||
disable_ipv6() {
|
||||
local foo
|
||||
foo="$(ip -f inet6 addr list 2> /dev/null)"
|
||||
|
||||
if [ -n "$foo" ]; then
|
||||
if qt mywhich ip6tables; then
|
||||
ip6tables -P FORWARD DROP
|
||||
ip6tables -P INPUT DROP
|
||||
ip6tables -P OUTPUT DROP
|
||||
ip6tables -F
|
||||
ip6tables -X
|
||||
ip6tables -A OUTPUT -o lo -j ACCEPT
|
||||
ip6tables -A INPUT -i lo -j ACCEPT
|
||||
else
|
||||
error_message "WARNING: DISABLE_IPV6=Yes in shorewall.conf but this system does not appear to have ip6tables"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
# Function to truncate a string -- It uses 'cut -b -<n>'
|
||||
# rather than ${v:first:last} because light-weight shells like ash and
|
||||
# dash do not support that form of expansion.
|
||||
#
|
||||
|
||||
truncate() # $1 = length
|
||||
{
|
||||
cut -b -${1}
|
||||
}
|
||||
|
||||
delete_tc1()
|
||||
{
|
||||
clear_one_tc() {
|
||||
tc qdisc del dev $1 root 2> /dev/null
|
||||
tc qdisc del dev $1 ingress 2> /dev/null
|
||||
|
||||
}
|
||||
|
||||
run_user_exit tcclear
|
||||
|
||||
run_ip link list | \
|
||||
while read inx interface details; do
|
||||
case $inx in
|
||||
[0-9]*)
|
||||
clear_one_tc ${interface%:}
|
||||
;;
|
||||
*)
|
||||
;;
|
||||
esac
|
||||
done
|
||||
}
|
||||
|
||||
#
|
||||
# Detect a device's MTU -- echos the passed device's MTU
|
||||
#
|
||||
get_device_mtu() # $1 = device
|
||||
{
|
||||
local output
|
||||
output="$(ip link list dev $1 2> /dev/null)" # quotes required for /bin/ash
|
||||
|
||||
if [ -n "$output" ]; then
|
||||
echo $(find_mtu $output)
|
||||
else
|
||||
echo 1500
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Version of the above that doesn't generate any output for MTU 1500.
|
||||
# Generates 'mtu <mtu+>' otherwise, where <mtu+> is the device's MTU + 100
|
||||
#
|
||||
get_device_mtu1() # $1 = device
|
||||
{
|
||||
local output
|
||||
output="$(ip link list dev $1 2> /dev/null)" # quotes required for /bin/ash
|
||||
local mtu
|
||||
|
||||
if [ -n "$output" ]; then
|
||||
mtu=$(find_mtu $output)
|
||||
if [ -n "$mtu" ]; then
|
||||
[ $mtu = 1500 ] || echo mtu $(($mtu + 100))
|
||||
fi
|
||||
fi
|
||||
|
||||
}
|
||||
|
||||
#
|
||||
# Undo changes to routing
|
||||
#
|
||||
undo_routing() {
|
||||
|
||||
if [ -z "$NOROUTES" ]; then
|
||||
#
|
||||
# Restore rt_tables database
|
||||
#
|
||||
if [ -f ${VARDIR}/rt_tables ]; then
|
||||
[ -w /etc/iproute2/rt_table -a -z "$KEEP_RT_TABLES" ] && cp -f ${VARDIR}/rt_tables /etc/iproute2/ && progress_message "/etc/iproute2/rt_tables database restored"
|
||||
rm -f ${VARDIR}/rt_tables
|
||||
fi
|
||||
#
|
||||
# Restore the rest of the routing table
|
||||
#
|
||||
if [ -f ${VARDIR}/undo_routing ]; then
|
||||
. ${VARDIR}/undo_routing
|
||||
progress_message "Shorewall-generated routing tables and routing rules removed"
|
||||
rm -f ${VARDIR}/undo_routing
|
||||
fi
|
||||
fi
|
||||
|
||||
}
|
||||
|
||||
restore_default_route() {
|
||||
if [ -z "$NOROUTES" -a -f ${VARDIR}/default_route ]; then
|
||||
local default_route
|
||||
default_route=
|
||||
local route
|
||||
|
||||
while read route ; do
|
||||
case $route in
|
||||
default*)
|
||||
if [ -n "$default_route" ]; then
|
||||
case "$default_route" in
|
||||
*metric*)
|
||||
#
|
||||
# Don't restore a route with a metric -- we only replace the one with metric == 0
|
||||
#
|
||||
qt ip route delete default metric 0 && \
|
||||
progress_message "Default Route with metric 0 deleted"
|
||||
;;
|
||||
*)
|
||||
qt ip route replace $default_route && \
|
||||
progress_message "Default Route (${default_route# }) restored"
|
||||
;;
|
||||
esac
|
||||
|
||||
break
|
||||
fi
|
||||
|
||||
default_route="$default_route $route"
|
||||
;;
|
||||
*)
|
||||
default_route="$default_route $route"
|
||||
;;
|
||||
esac
|
||||
done < ${VARDIR}/default_route
|
||||
|
||||
rm -f ${VARDIR}/default_route
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Determine how to do "echo -e"
|
||||
#
|
||||
|
||||
find_echo() {
|
||||
local result
|
||||
|
||||
result=$(echo "a\tb")
|
||||
[ ${#result} -eq 3 ] && { echo echo; return; }
|
||||
|
||||
result=$(echo -e "a\tb")
|
||||
[ ${#result} -eq 3 ] && { echo "echo -e"; return; }
|
||||
|
||||
result=$(which echo)
|
||||
[ -n "$result" ] && { echo "$result -e"; return; }
|
||||
|
||||
echo echo
|
||||
}
|
||||
|
||||
#
|
||||
# Determine the MAC address of the passed IP through the passed interface
|
||||
#
|
||||
find_mac() # $1 = IP address, $2 = interface
|
||||
{
|
||||
if interface_is_usable $2 ; then
|
||||
qt ping -nc 1 -t 2 -I $2 $1
|
||||
|
||||
local result
|
||||
result=$(ip neigh list | awk "/^$1 / {print \$5}")
|
||||
|
||||
case $result in
|
||||
\<*\>)
|
||||
;;
|
||||
*)
|
||||
[ -n "$result" ] && echo $result
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Flush the conntrack table if $PURGE is non-empty
|
||||
#
|
||||
conditionally_flush_conntrack() {
|
||||
|
||||
if [ -n "$PURGE" ]; then
|
||||
if [ -n $(which conntrack) ]; then
|
||||
conntrack -F
|
||||
else
|
||||
error_message "WARNING: The '-p' option requires the conntrack utility which does not appear to be installed on this system"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
################################################################################
|
||||
# End of functions imported from /usr/share/shorewall/lib.base
|
||||
################################################################################
|
||||
Loading…
Reference in New Issue
Block a user