]> git.ipfire.org Git - people/mfischer/ipfire-2.x.git/blobdiff - config/firewall/firewall-lib.pl
Merge branch 'master' into next
[people/mfischer/ipfire-2.x.git] / config / firewall / firewall-lib.pl
old mode 100755 (executable)
new mode 100644 (file)
index 9f546a9..f4089a3
@@ -2,7 +2,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2013 Alexander Marx <amarx@ipfire.org>                        #
+# Copyright (C) 2021 Alexander Marx <amarx@ipfire.org>                        #
 #                                                                             #
 # This program is free software: you can redistribute it and/or modify        #
 # it under the terms of the GNU General Public License as published by        #
@@ -20,6 +20,8 @@
 ###############################################################################
 
 use strict;
+use experimental 'smartmatch';
+
 no warnings 'uninitialized';
 
 package fwlib;
@@ -27,6 +29,7 @@ package fwlib;
 my %customnetwork=();
 my %customhost=();
 my %customgrp=();
+my %customlocationgrp=();
 my %customservice=();
 my %customservicegrp=();
 my %ccdnet=();
@@ -38,10 +41,12 @@ my %ovpnsettings=();
 my %aliases=();
 
 require '/var/ipfire/general-functions.pl';
+require '/var/ipfire/location-functions.pl';
 
 my $confignet          = "${General::swroot}/fwhosts/customnetworks";
 my $confighost         = "${General::swroot}/fwhosts/customhosts";
 my $configgrp          = "${General::swroot}/fwhosts/customgroups";
+my $configlocationgrp  = "${General::swroot}/fwhosts/customlocationgrp";
 my $configsrv          = "${General::swroot}/fwhosts/customservices";
 my $configsrvgrp       = "${General::swroot}/fwhosts/customservicegrp";
 my $configccdnet       = "${General::swroot}/ovpn/ccd.conf";
@@ -59,6 +64,7 @@ my $netsettings               = "${General::swroot}/ethernet/settings";
 &General::readhasharray("$confignet", \%customnetwork);
 &General::readhasharray("$confighost", \%customhost);
 &General::readhasharray("$configgrp", \%customgrp);
+&General::readhasharray("$configlocationgrp", \%customlocationgrp);
 &General::readhasharray("$configccdnet", \%ccdnet);
 &General::readhasharray("$configccdhost", \%ccdhost);
 &General::readhasharray("$configipsec", \%ipsecconf);
@@ -66,6 +72,9 @@ my $netsettings               = "${General::swroot}/ethernet/settings";
 &General::readhasharray("$configsrvgrp", \%customservicegrp);
 &General::get_aliases(\%aliases);
 
+# Get all available locations.
+my @available_locations = &get_locations();
+
 sub get_srv_prot
 {
        my $val=shift;
@@ -147,6 +156,9 @@ sub get_ipsec_net_ip
        my $val=shift;
        my $field=shift;
        foreach my $key (sort {$a <=> $b} keys %ipsecconf){
+               #adapt $val to reflect real name without subnet (if rule with only one ipsec subnet is created)
+               my @tmpval = split (/\|/, $val);
+               $val = $tmpval[0];
                if($ipsecconf{$key}[1] eq $val){
                        return $ipsecconf{$key}[$field];
                }
@@ -162,6 +174,15 @@ sub get_ipsec_host_ip
                }
        }
 }
+sub get_ipsec_id {
+       my $val = shift;
+
+       foreach my $key (keys %ipsecconf) {
+               if ($ipsecconf{$key}[1] eq $val) {
+                       return $key;
+               }
+       }
+}
 sub get_ovpn_n2n_ip
 {
        my $val=shift;
@@ -217,7 +238,7 @@ sub get_std_net_ip
        }elsif($val eq 'BLUE'){
                return "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
        }elsif($val eq 'RED'){
-               return "0.0.0.0/0 -o $con";
+               return "0.0.0.0/0";
        }elsif($val =~ /OpenVPN/i){
                return "$ovpnsettings{'DOVPN_SUBNET'}";
        }elsif($val =~ /IPsec/i){
@@ -226,6 +247,23 @@ sub get_std_net_ip
                return ;
        }
 }
+sub get_interface
+{
+       my $net=shift;
+       if($net eq "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}"){
+               return "$netsettings{'GREEN_DEV'}";
+       }
+       if($net eq "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}"){
+               return "$netsettings{'ORANGE_DEV'}";
+       }
+       if($net eq "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}"){
+               return "$netsettings{'BLUE_DEV'}";
+       }
+       if($net eq "0.0.0.0/0") {
+               return &get_external_interface();
+       }
+       return "";
+}
 sub get_net_ip
 {
        my $val=shift;
@@ -277,6 +315,17 @@ sub get_addresses
                foreach my $grp (sort {$a <=> $b} keys %customgrp) {
                        if ($customgrp{$grp}[0] eq $value) {
                                my @address = &get_address($customgrp{$grp}[3], $customgrp{$grp}[2], $type);
+                               next if ($address[0][0] eq 'none');
+                               if (@address) {
+                                       push(@addresses, @address);
+                               }
+                       }
+               }
+       }elsif ($addr_type ~~ ["cust_location_src", "cust_location_tgt"] && $value =~ "group:") {
+               $value=substr($value,6);
+               foreach my $grp (sort {$a <=> $b} keys %customlocationgrp) {
+                       if ($customlocationgrp{$grp}[0] eq $value) {
+                               my @address = &get_address($addr_type, $customlocationgrp{$grp}[2], $type);
 
                                if (@address) {
                                        push(@addresses, @address);
@@ -305,9 +354,9 @@ sub get_address
        # address. Otherwise, we assume that it is an IP address.
        if ($key ~~ ["src_addr", "tgt_addr"]) {
                if (&General::validmac($value)) {
-                       push(@ret, "-m mac --mac-source $value");
+                       push(@ret, ["-m mac --mac-source $value", ""]);
                } else {
-                       push(@ret, $value);
+                       push(@ret, [$value, ""]);
                }
 
        # If a default network interface (GREEN, BLUE, etc.) is selected, we
@@ -316,88 +365,123 @@ sub get_address
                my $external_interface = &get_external_interface();
 
                my $network_address = &get_std_net_ip($value, $external_interface);
+
                if ($network_address) {
-                       push(@ret, $network_address);
+                       my $interface = &get_interface($network_address);
+                       push(@ret, [$network_address, $interface]);
                }
 
        # Custom networks.
        } elsif ($key ~~ ["cust_net_src", "cust_net_tgt", "Custom Network"]) {
                my $network_address = &get_net_ip($value);
                if ($network_address) {
-                       push(@ret, $network_address);
+                       push(@ret, [$network_address, ""]);
                }
 
        # Custom hosts.
        } elsif ($key ~~ ["cust_host_src", "cust_host_tgt", "Custom Host"]) {
                my $host_address = &get_host_ip($value, $type);
                if ($host_address) {
-                       push(@ret, $host_address);
+                       push(@ret, [$host_address, ""]);
                }
 
        # OpenVPN networks.
        } elsif ($key ~~ ["ovpn_net_src", "ovpn_net_tgt", "OpenVPN static network"]) {
                my $network_address = &get_ovpn_net_ip($value, 1);
                if ($network_address) {
-                       push(@ret, $network_address);
+                       push(@ret, [$network_address, ""]);
                }
 
        # OpenVPN hosts.
        } elsif ($key ~~ ["ovpn_host_src", "ovpn_host_tgt", "OpenVPN static host"]) {
                my $host_address = &get_ovpn_host_ip($value, 33);
                if ($host_address) {
-                       push(@ret, $host_address);
+                       push(@ret, [$host_address, ""]);
                }
 
        # OpenVPN N2N.
        } elsif ($key ~~ ["ovpn_n2n_src", "ovpn_n2n_tgt", "OpenVPN N-2-N"]) {
                my $network_address = &get_ovpn_n2n_ip($value, 11);
                if ($network_address) {
-                       push(@ret, $network_address);
+                       push(@ret, [$network_address, ""]);
                }
 
        # IPsec networks.
        } elsif ($key ~~ ["ipsec_net_src", "ipsec_net_tgt", "IpSec Network"]) {
-               my $network_address = &get_ipsec_net_ip($value, 11);
-               if ($network_address) {
-                       push(@ret, $network_address);
+               #Check if we have multiple subnets and only want one of them
+               if ( $value =~ /\|/ ){
+                       my @parts = split(/\|/, $value);
+                       push(@ret, [$parts[1], ""]);
+               }else{
+                       my $interface_mode = &get_ipsec_net_ip($value, 36);
+                       if ($interface_mode ~~ ["gre", "vti"]) {
+                               my $id = &get_ipsec_id($value);
+                               push(@ret, ["0.0.0.0/0", "${interface_mode}${id}"]);
+                       } else {
+                               my $network_address = &get_ipsec_net_ip($value, 11);
+                               my @nets = split(/\|/, $network_address);
+                               foreach my $net (@nets) {
+                                       push(@ret, [$net, ""]);
+                               }
+                       }
                }
 
        # The firewall's own IP addresses.
        } elsif ($key ~~ ["ipfire", "ipfire_src"]) {
                # ALL
                if ($value eq "ALL") {
-                       push(@ret, "0/0");
+                       push(@ret, ["0/0", ""]);
 
                # GREEN
                } elsif ($value eq "GREEN") {
-                       push(@ret, $netsettings{"GREEN_ADDRESS"});
+                       push(@ret, [$netsettings{"GREEN_ADDRESS"}, ""]);
 
                # BLUE
                } elsif ($value eq "BLUE") {
-                       push(@ret, $netsettings{"BLUE_ADDRESS"});
+                       push(@ret, [$netsettings{"BLUE_ADDRESS"}, ""]);
 
                # ORANGE
                } elsif ($value eq "ORANGE") {
-                       push(@ret, $netsettings{"ORANGE_ADDRESS"});
+                       push(@ret, [$netsettings{"ORANGE_ADDRESS"}, ""]);
 
                # RED
                } elsif ($value ~~ ["RED", "RED1"]) {
                        my $address = &get_external_address();
                        if ($address) {
-                               push(@ret, $address);
+                               push(@ret, [$address, ""]);
                        }
 
                # Aliases
                } else {
                        my $alias = &get_alias($value);
                        if ($alias) {
-                               push(@ret, $alias);
+                               push(@ret, [$alias, ""]);
                        }
                }
 
+       # Handle rule options with a location as source.
+       } elsif ($key eq "cust_location_src") {
+               # Check if the given location is available.
+               if(&location_is_available($value)) {
+                       # Get external interface.
+                       my $external_interface = &get_external_interface();
+
+                       push(@ret, ["-m set --match-set CC_$value src", "$external_interface"]);
+               }
+
+       # Handle rule options with a location as target.
+       } elsif ($key eq "cust_location_tgt") {
+               # Check if the given location is available.
+               if(&location_is_available($value)) {
+                       # Get external interface.
+                       my $external_interface = &get_external_interface();
+
+                       push(@ret, ["-m set --match-set CC_$value dst", "$external_interface"]);
+               }
+
        # If nothing was selected, we assume "any".
        } else {
-               push(@ret, "0/0");
+               push(@ret, ["0/0", ""]);
        }
 
        return @ret;
@@ -520,6 +604,9 @@ sub get_internal_firewall_ip_address
                return 0;
        }
 
+       # Convert net mask into correct format for &General::IpInSubnet().
+       $net_mask = &General::iporsubtodec($net_mask);
+
        my @addresses = &get_internal_firewall_ip_addresses($use_orange);
        foreach my $zone_address (@addresses) {
                if (&General::IpInSubnet($zone_address, $net_address, $net_mask)) {
@@ -530,4 +617,27 @@ sub get_internal_firewall_ip_address
        return 0;
 }
 
+sub get_locations() {
+       return &Location::Functions::get_locations();
+}
+
+# Function to check if a database of a given location is
+# available.
+sub location_is_available($) {
+       my ($requested_location) = @_;
+
+       # Loop through the global array of available locations.
+       foreach my $location (@available_locations) {
+               # Check if the current processed location is the searched one.
+               if($location eq $requested_location) {
+                       # If it is part of the array, return "1" - True.
+                       return 1;
+               }
+       }
+
+       # If we got here, the given location is not part of the array of available
+       # zones. Return nothing.
+       return;
+}
+
 return 1;