use PVE::Firewall;
use Getopt::Long;
use File::Basename;
+use Net::IP;
my $mark;
my $trace;
-my $outside_iface = 'eth0';
-my $outside_bridge = 'vmbr0';
-
my $debug = 0;
sub print_usage_and_exit {
}
}
+sub nf_dev_match {
+ my ($devre, $dev) = @_;
+
+ $devre =~ s/\+$/\.\*/;
+ return ($dev =~ m/^${devre}$/) ? 1 : 0;
+}
+
+sub ipset_match {
+ my ($ipsetname, $ipset, $ipaddr) = @_;
+
+ my $ip = Net::IP->new($ipaddr);
+
+ foreach my $entry (@$ipset) {
+ next if $entry =~ m/^create/; # simply ignore
+ if ($entry =~ m/add \S+ (\S+)$/) {
+ my $test = Net::IP->new($1);
+ if ($test->overlaps($ip)) {
+ add_trace("IPSET $ipsetname match $ipaddr\n");
+ return 1;
+ }
+ } else {
+ die "implement me";
+ }
+ }
+
+ return 0;
+}
+
sub rule_match {
- my ($chain, $rule, $pkg) = @_;
+ my ($ipset_ruleset, $chain, $rule, $pkg) = @_;
$rule =~ s/^-A $chain // || die "got strange rule: $rule";
- if ($rule =~ s/^-m conntrack\s*//) {
- return undef; # simply ignore
- }
+ while (length($rule)) {
- if ($rule =~ s/^-m addrtype\s*//) {
- return undef; # simply ignore
- }
+ if ($rule =~ s/^-m conntrack\s*//) {
+ return undef; # simply ignore
+ }
- if ($rule =~ s/^-i (\S+)\s*//) {
- die "missing iface_in" if !$pkg->{iface_in};
- return undef if $pkg->{iface_in} ne $1; # no match
- }
- if ($rule =~ s/^-o (\S+)\s*//) {
- die "missing iface_out" if !$pkg->{iface_out};
- return undef if $pkg->{iface_out} ne $1; # no match
- }
+ if ($rule =~ s/^-m addrtype\s*//) {
+ return undef; # simply ignore
+ }
- if ($rule =~ s/^-p (tcp|udp)\s*//) {
- die "missing proto" if !$pkg->{proto};
- return undef if $pkg->{proto} ne $1; # no match
- }
+ if ($rule =~ s/^-i (\S+)\s*//) {
+ my $devre = $1;
+ die "missing iface_in" if !$pkg->{iface_in};
+ return undef if !nf_dev_match($devre, $pkg->{iface_in});
+ next;
+ }
- if ($rule =~ s/^--dport (\d+):(\d+)\s*//) {
- die "missing dport" if !$pkg->{dport};
- return undef if ($pkg->{dport} < $1) || ($pkg->{dport} > $2); # no match
- }
+ if ($rule =~ s/^-o (\S+)\s*//) {
+ my $devre = $1;
+ die "missing iface_out" if !$pkg->{iface_out};
+ return undef if !nf_dev_match($devre, $pkg->{iface_out});
+ next;
+ }
- if ($rule =~ s/^--dport (\d+)\s*//) {
- die "missing dport" if !$pkg->{dport};
- return undef if $pkg->{dport} != $1; # no match
- }
+ if ($rule =~ s/^-p (tcp|udp)\s*//) {
+ die "missing proto" if !$pkg->{proto};
+ return undef if $pkg->{proto} ne $1; # no match
+ next;
+ }
- if ($rule =~ s/^-s (\S+)\s*//) {
- die "missing source" if !$pkg->{source};
- return undef if $pkg->{source} ne $1; # no match
- }
+ if ($rule =~ s/^--dport (\d+):(\d+)\s*//) {
+ die "missing dport" if !$pkg->{dport};
+ return undef if ($pkg->{dport} < $1) || ($pkg->{dport} > $2); # no match
+ next;
+ }
+
+ if ($rule =~ s/^--dport (\d+)\s*//) {
+ die "missing dport" if !$pkg->{dport};
+ return undef if $pkg->{dport} != $1; # no match
+ next;
+ }
+
+ if ($rule =~ s/^-s (\S+)\s*//) {
+ die "missing source" if !$pkg->{source};
+ my $ip = Net::IP->new($1);
+ return undef if !$ip->overlaps(Net::IP->new($pkg->{source})); # no match
+ next;
+ }
- if ($rule =~ s/^-d (\S+)\s*//) {
- die "missing destination" if !$pkg->{dest};
- return undef if $pkg->{dest} ne $1; # no match
- }
+ if ($rule =~ s/^-d (\S+)\s*//) {
+ die "missing destination" if !$pkg->{dest};
+ my $ip = Net::IP->new($1);
+ return undef if !$ip->overlaps(Net::IP->new($pkg->{dest})); # no match
+ next;
+ }
- if ($rule =~ s/^-m mac ! --mac-source (\S+)\s*//) {
- die "missing source mac" if !$pkg->{mac_source};
- return undef if $pkg->{mac_source} eq $1; # no match
- }
+ if ($rule =~ s/^-m set --match-set (\S+) src\s*//) {
+ die "missing source" if !$pkg->{source};
+ my $ipset = $ipset_ruleset->{$1};
+ die "no such ip set '$1'" if !$ipset;
+ return undef if !ipset_match($1, $ipset, $pkg->{source});
+ next;
+ }
- if ($rule =~ s/^-m physdev --physdev-is-bridged --physdev-in (\S+)\s*//) {
- my $devre = $1;
- $devre =~ s/\+/\.\*/;
- return undef if !$pkg->{physdev_in};
- return undef if $pkg->{physdev_in} !~ m/^${devre}$/;
- }
+ if ($rule =~ s/^-m set --match-set (\S+) dst\s*//) {
+ die "missing destination" if !$pkg->{dest};
+ my $ipset = $ipset_ruleset->{$1};
+ die "no such ip set '$1'" if !$ipset;
+ return undef if !ipset_match($1, $ipset, $pkg->{dest});
+ next;
+ }
- if ($rule =~ s/^-m physdev --physdev-is-bridged --physdev-out (\S+)\s*//) {
- my $devre = $1;
- $devre =~ s/\+/\.\*/;
- return undef if !$pkg->{physdev_out};
- return undef if $pkg->{physdev_out} !~ m/^${devre}$/;
- }
+ if ($rule =~ s/^-m mac ! --mac-source (\S+)\s*//) {
+ die "missing source mac" if !$pkg->{mac_source};
+ return undef if $pkg->{mac_source} eq $1; # no match
+ next;
+ }
- if ($rule =~ s/^-j MARK --set-mark (\d+)\s*$//) {
- $mark = $1;
- return undef;
- }
+ if ($rule =~ s/^-m physdev --physdev-is-bridged --physdev-in (\S+)\s*//) {
+ my $devre = $1;
+ return undef if !$pkg->{physdev_in};
+ return undef if !nf_dev_match($devre, $pkg->{physdev_in});
+ next;
+ }
- if ($rule =~ s/^-j (\S+)\s*$//) {
- return (0, $1);
- }
+ if ($rule =~ s/^-m physdev --physdev-is-bridged --physdev-out (\S+)\s*//) {
+ my $devre = $1;
+ return undef if !$pkg->{physdev_out};
+ return undef if !nf_dev_match($devre, $pkg->{physdev_out});
+ next;
+ }
+
+ if ($rule =~ s/^-m mark --mark (\d+)\s*//) {
+ return undef if !defined($mark) || $mark != $1;
+ next;
+ }
+
+ # final actions
+
+ if ($rule =~ s/^-j MARK --set-mark (\d+)\s*$//) {
+ $mark = $1;
+ return undef;
+ }
+
+ if ($rule =~ s/^-j (\S+)\s*$//) {
+ return (0, $1);
+ }
+
+ if ($rule =~ s/^-g (\S+)\s*$//) {
+ return (1, $1);
+ }
+
+ if ($rule =~ s/^-j NFLOG --nflog-prefix \"[^\"]+\"$//) {
+ return undef;
+ }
- if ($rule =~ s/^-g (\S+)\s*$//) {
- return (1, $1);
+ last;
}
die "unable to parse rule: $rule";
}
sub ruleset_simulate_chain {
- my ($ruleset, $chain, $pkg) = @_;
+ my ($ruleset, $ipset_ruleset, $chain, $pkg) = @_;
add_trace("ENTER chain $chain\n");
+ my $counter = 0;
+
if ($chain eq 'PVEFW-Drop') {
add_trace("LEAVE chain $chain\n");
- return 'DROP';
+ return ('DROP', $counter);
}
if ($chain eq 'PVEFW-reject') {
add_trace("LEAVE chain $chain\n");
- return 'REJECT';
+ return ('REJECT', $counter);
}
if ($chain eq 'PVEFW-tcpflags') {
add_trace("LEAVE chain $chain\n");
- return undef;
+ return (undef, $counter);
}
my $rules = $ruleset->{$chain} ||
die "no such chain '$chain'";
foreach my $rule (@$rules) {
- my ($goto, $action) = rule_match($chain, $rule, $pkg);
+ $counter++;
+ my ($goto, $action) = rule_match($ipset_ruleset, $chain, $rule, $pkg);
if (!defined($action)) {
add_trace("SKIP: $rule\n");
next;
if ($action eq 'ACCEPT' || $action eq 'DROP' || $action eq 'REJECT') {
add_trace("TERMINATE chain $chain: $action\n");
- return $action;
+ return ($action, $counter);
} elsif ($action eq 'RETURN') {
add_trace("RETURN FROM chain $chain\n");
last;
} else {
if ($goto) {
add_trace("LEAVE chain $chain - goto $action\n");
- return ruleset_simulate_chain($ruleset, $action, $pkg)
+ return ruleset_simulate_chain($ruleset, $ipset_ruleset, $action, $pkg)
#$chain = $action;
#$rules = $ruleset->{$chain} || die "no such chain '$chain'";
} else {
- if ($action = ruleset_simulate_chain($ruleset, $action, $pkg)) {
- return $action;
- }
+ my ($act, $ctr) = ruleset_simulate_chain($ruleset, $ipset_ruleset, $action, $pkg);
+ $counter += $ctr;
+ return ($act, $counter) if $act;
add_trace("CONTINUE chain $chain\n");
}
}
add_trace("LEAVE chain $chain\n");
if ($chain =~ m/^PVEFW-(INPUT|OUTPUT|FORWARD)$/) {
- return 'ACCEPT'; # default policy
+ return ('ACCEPT', $counter); # default policy
}
- return undef;
+ return (undef, $counter);
}
sub copy_packet {
my $physdev_in;
+ my $ipt_invocation_counter = 0;
+ my $rule_check_counter = 0;
+
while ($route_state ne $target->{iface}) {
my $chain;
$pkg->{iface_in} = $pkg->{iface_out} = undef;
$pkg->{physdev_in} = $pkg->{physdev_out} = undef;
- if ($route_state eq 'from-outside') {
- $next_route_state = $outside_bridge || die 'internal error';
- $next_physdev_in = $outside_iface || die 'internal error';
+ if ($route_state eq 'from-bport') {
+ $next_route_state = $from_info->{bridge} || die 'internal error';
+ $next_physdev_in = $from_info->{iface} || die 'internal error';
} elsif ($route_state eq 'host') {
- if ($target->{type} eq 'outside') {
+ if ($target->{type} eq 'bport') {
$pkg->{iface_in} = 'lo';
- $pkg->{iface_out} = $outside_bridge;
+ $pkg->{iface_out} = $target->{bridge} || die 'internal error';
$chain = 'PVEFW-OUTPUT';
- $next_route_state = $outside_iface
+ $next_route_state = $target->{iface} || die 'internal error';
} elsif ($target->{type} eq 'ct') {
$pkg->{iface_in} = 'lo';
$pkg->{iface_out} = 'venet0';
$pkg->{iface_out} = 'lo';
$next_route_state = 'host';
- } elsif ($target->{type} eq 'outside') {
+ } elsif ($target->{type} eq 'bport') {
$chain = 'PVEFW-FORWARD';
$pkg->{iface_in} = 'venet0';
- $pkg->{iface_out} = $outside_bridge;
- $next_route_state = $outside_iface;
+ $pkg->{iface_out} = $target->{bridge} || die 'internal error';
+ $next_route_state = $target->{iface} || die 'internal error';
} elsif ($target->{type} eq 'vm') {
} elsif ($route_state =~ m/^vmbr\d+$/) {
die "missing physdev_in - internal error?" if !$physdev_in;
+ $pkg->{physdev_in} = $physdev_in;
if ($target->{type} eq 'host') {
$pkg->{iface_out} = 'lo';
$next_route_state = 'host';
- if ($route_state eq $outside_bridge) {
-
- } else {
-
- }
-
- } elsif ($target->{type} eq 'outside') {
+ } elsif ($target->{type} eq 'bport') {
$chain = 'PVEFW-FORWARD';
$pkg->{iface_in} = $route_state;
- $pkg->{iface_out} = $outside_bridge;
- $pkg->{physdev_in} = $physdev_in;
+ $pkg->{iface_out} = $target->{bridge} || die 'internal error';
# conditionally set physdev_out (same behavior as kernel)
- if ($route_state eq $outside_bridge) {
- $pkg->{physdev_out} = $outside_iface || die 'internal error';
+ if ($route_state eq $target->{bridge}) {
+ $pkg->{physdev_out} = $target->{iface} || die 'internal error';
}
- $next_route_state = $outside_iface;
+ $next_route_state = $target->{iface};
} elsif ($target->{type} eq 'ct') {
$chain = 'PVEFW-FORWARD';
$pkg->{iface_in} = $route_state;
$pkg->{iface_out} = $target->{bridge};
- $pkg->{physdev_in} = $physdev_in;
# conditionally set physdev_out (same behavior as kernel)
if ($route_state eq $target->{bridge}) {
$pkg->{physdev_out} = $target->{fwpr} || die 'internal error';
if ($chain) {
add_trace("IPT check at $route_state (chain $chain)\n");
add_trace(Dumper($pkg));
- my $res = ruleset_simulate_chain($ruleset, $chain, $pkg);
- return $res if $res ne 'ACCEPT';
+ $ipt_invocation_counter++;
+ my ($res, $ctr) = ruleset_simulate_chain($ruleset, $ipset_ruleset, $chain, $pkg);
+ $rule_check_counter += $ctr;
+ return ($res, $ipt_invocation_counter, $rule_check_counter) if $res ne 'ACCEPT';
}
$route_state = $next_route_state;
$physdev_in = $next_physdev_in;
}
- return 'ACCEPT';
+ return ('ACCEPT', $ipt_invocation_counter, $rule_check_counter);
}
sub extract_ct_info {
sub simulate_firewall {
my ($ruleset, $ipset_ruleset, $vmdata, $test) = @_;
- my $from = delete $test->{from} || die "missing 'from' field";
- my $to = delete $test->{to} || die "missing 'to' field";
- my $action = delete $test->{action} || die "missing 'action'";
-
+ my $from = $test->{from} || die "missing 'from' field";
+ my $to = $test->{to} || die "missing 'to' field";
+ my $action = $test->{action} || die "missing 'action'";
+
+ my $testid = $test->{id};
+
die "from/to needs to be different" if $from eq $to;
my $pkg = {
proto => 'tcp',
- sport => '1234',
- dport => '4321',
- source => '10.11.12.13',
- dest => '10.11.12.14',
+ sport => undef,
+ dport => undef,
+ source => undef,
+ dest => undef,
};
while (my ($k,$v) = each %$test) {
+ next if $k eq 'from';
+ next if $k eq 'to';
+ next if $k eq 'action';
+ next if $k eq 'id';
+ die "unknown attribute '$k'\n" if !exists($pkg->{$k});
$pkg->{$k} = $v;
}
if ($from eq 'host') {
$from_info->{type} = 'host';
$start_state = 'host';
+ } elsif ($from =~ m|^(vmbr\d+)/(\S+)$|) {
+ $from_info->{type} = 'bport';
+ $from_info->{bridge} = $1;
+ $from_info->{iface} = $2;
+ $start_state = 'from-bport';
} elsif ($from eq 'outside') {
- $from_info->{type} = 'outside';
- $start_state = 'from-outside';
+ $from_info->{type} = 'bport';
+ $from_info->{bridge} = 'vmbr0';
+ $from_info->{iface} = 'eth0';
+ $start_state = 'from-bport';
+ } elsif ($from eq 'nfvm') {
+ $from_info->{type} = 'bport';
+ $from_info->{bridge} = 'vmbr0';
+ $from_info->{iface} = 'tapXYZ';
+ $start_state = 'from-bport';
} elsif ($from =~ m/^ct(\d+)$/) {
my $vmid = $1;
$from_info = extract_ct_info($vmdata, $vmid);
if ($from_info->{ip_address}) {
- $pkg->{source} = $from_info->{ip_address};
+ $pkg->{source} = $from_info->{ip_address} if !defined($pkg->{source});
$start_state = 'venet-out';
} else {
die "implement me";
$start_state = 'fwbr-out';
$pkg->{mac_source} = $from_info->{macaddr};
} else {
- die "implement me";
+ die "unable to parse \"from => '$from'\"\n";
}
+ $pkg->{source} = '100.200.3.4' if !defined($pkg->{source});
+
my $target;
if ($to eq 'host') {
$target->{type} = 'host';
$target->{iface} = 'host';
+ } elsif ($to =~ m|^(vmbr\d+)/(\S+)$|) {
+ $target->{type} = 'bport';
+ $target->{bridge} = $1;
+ $target->{iface} = $2;
} elsif ($to eq 'outside') {
- $target->{type} = 'outside';
- $target->{iface} = $outside_iface;
+ $target->{type} = 'bport';
+ $target->{bridge} = 'vmbr0';
+ $target->{iface} = 'eth0';
+ } elsif ($to eq 'nfvm') {
+ $target->{type} = 'bport';
+ $target->{bridge} = 'vmbr0';
+ $target->{iface} = 'tapXYZ';
} elsif ($to =~ m/^ct(\d+)$/) {
my $vmid = $1;
$target = extract_ct_info($vmdata, $vmid);
$target = extract_vm_info($vmdata, $vmid);
$target->{iface} = $target->{tapdev};
} else {
- die "implement me";
+ die "unable to parse \"to => '$to'\"\n";
}
- my $res = route_packet($ruleset, $ipset_ruleset, $pkg, $from_info, $target, $start_state);
+ my ($res, $ic, $rc) = route_packet($ruleset, $ipset_ruleset, $pkg,
+ $from_info, $target, $start_state);
+ add_trace("IPT statistics: invocation = $ic, checks = $rc\n");
+
die "test failed ($res != $action)\n" if $action ne $res;
return undef;
$trace = '';
print Dumper($ruleset) if $debug;
$testcount++;
- eval { simulate_firewall($ruleset, $ipset_ruleset, $vmdata, $test); };
+ eval {
+ my @test_zones = qw(host outside nfvm vm100 ct200);
+ if (!defined($test->{from}) && !defined($test->{to})) {
+ die "missing zone speification (from, to)\n";
+ } elsif (!defined($test->{to})) {
+ foreach my $zone (@test_zones) {
+ next if $zone eq $test->{from};
+ $test->{to} = $zone;
+ add_trace("Set Zone: to => '$zone'\n");
+ simulate_firewall($ruleset, $ipset_ruleset, $vmdata, $test);
+ }
+ } elsif (!defined($test->{from})) {
+ foreach my $zone (@test_zones) {
+ next if $zone eq $test->{to};
+ $test->{from} = $zone;
+ add_trace("Set Zone: from => '$zone'\n");
+ simulate_firewall($ruleset, $ipset_ruleset, $vmdata, $test);
+ }
+ } else {
+ simulate_firewall($ruleset, $ipset_ruleset, $vmdata, $test);
+ }
+ };
if (my $err = $@) {
print Dumper($ruleset) if !$debug;
my $vmdata = {
qemu => {
100 => {
- net0 => "e1000=0E:0B:38:B8:B3:21,bridge=vmbr0",
+ net0 => "e1000=0E:0B:38:B8:B3:21,bridge=vmbr0,firewall=1",
},
101 => {
- net0 => "e1000=0E:0B:38:B8:B3:22,bridge=vmbr0",
+ net0 => "e1000=0E:0B:38:B8:B3:22,bridge=vmbr0,firewall=1",
},
# on bridge vmbr1
110 => {
- net0 => "e1000=0E:0B:38:B8:B4:21,bridge=vmbr1",
+ net0 => "e1000=0E:0B:38:B8:B4:21,bridge=vmbr1,firewall=1",
},
},
openvz => {
projects / pve-firewall.git / blobdiff