use strict;
use warnings;
use Data::Dumper;
-use PVE::Firewall;
-
-my $mark;
-my $trace;
+use PVE::FirewallSimulator;
+use Getopt::Long;
+use File::Basename;
+use Net::IP;
my $debug = 0;
-sub add_trace {
- my ($text) = @_;
-
- if ($debug) {
- print $text;
- } else {
- $trace .= $text;
- }
-}
-
-sub rule_match {
- my ($chain, $rule, $pkg) = @_;
-
- $rule =~ s/^-A $chain // || die "got strange rule: $rule";
-
- if ($rule =~ s/^-m conntrack\s*//) {
- return undef; # simply ignore
- }
-
- if ($rule =~ s/^-m addrtype\s*//) {
- return undef; # simply ignore
- }
-
- if ($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/^-p (tcp|udp)\s*//) {
- die "missing proto" if !$pkg->{proto};
- return undef if $pkg->{proto} 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} > $2); # no match
- }
-
- if ($rule =~ s/^--dport (\d+)\s*//) {
- die "missing dport" if !$pkg->{dport};
- return undef if $pkg->{dport} != $1; # no match
- }
-
- if ($rule =~ s/^-s (\S+)\s*//) {
- die "missing source" if !$pkg->{source};
- return undef if $pkg->{source} ne $1; # no match
- }
-
- if ($rule =~ s/^-d (\S+)\s*//) {
- die "missing destination" if !$pkg->{dest};
- return undef if $pkg->{dest} ne $1; # no match
- }
-
- if ($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 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 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/^-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);
- }
-
- die "unable to parse rule: $rule";
-}
-
-sub ruleset_simulate_chain {
- my ($ruleset, $chain, $pkg) = @_;
-
- add_trace("ENTER chain $chain\n");
-
- if ($chain eq 'PVEFW-Drop') {
- add_trace("LEAVE chain $chain\n");
- return 'DROP';
- }
- if ($chain eq 'PVEFW-reject') {
- add_trace("LEAVE chain $chain\n");
- return 'REJECT';
- }
-
- if ($chain eq 'PVEFW-tcpflags') {
- add_trace("LEAVE chain $chain\n");
- return undef;
- }
-
- my $rules = $ruleset->{$chain} ||
- die "no such chain '$chain'";
-
- foreach my $rule (@$rules) {
- my ($goto, $action) = rule_match($chain, $rule, $pkg);
- if (!defined($action)) {
- add_trace("SKIP: $rule\n");
- next;
- }
- add_trace("MATCH: $rule\n");
-
- if ($action eq 'ACCEPT' || $action eq 'DROP' || $action eq 'REJECT') {
- add_trace("TERMINATE chain $chain: $action\n");
- return $action;
- } elsif ($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, $pkg)
- #$chain = $action;
- #$rules = $ruleset->{$chain} || die "no such chain '$chain'";
- } else {
- if ($action = ruleset_simulate_chain($ruleset, $action, $pkg)) {
- return $action;
- }
- add_trace("CONTINUE chain $chain\n");
- }
- }
- }
-
- add_trace("LEAVE chain $chain\n");
- if ($chain =~ m/^PVEFW-(INPUT|OUTPUT|FORWARD)$/) {
- return 'ACCEPT'; # default policy
- }
-
- return undef;
-}
-
-sub copy_packet {
- my ($pkg) = @_;
-
- my $res = {};
-
- while (my ($k,$v) = each %$pkg) {
- $res->{$k} = $v;
- }
-
- return $res;
-}
-
-# Try to simulate packet traversal inside kernel. This invokes iptable
-# checks several times.
-sub route_packet {
- my ($ruleset, $ipset_ruleset, $pkg, $from_info, $target, $start_state) = @_;
-
- my $route_state = $start_state;
-
- my $physdev_in;
-
- while ($route_state ne $target->{iface}) {
-
- my $chain;
- my $next_route_state;
- my $next_physdev_in;
-
- $pkg->{iface_in} = $pkg->{iface_out} = undef;
- $pkg->{physdev_in} = $pkg->{physdev_out} = undef;
-
- if ($route_state eq 'host') {
-
- if ($target->{type} eq 'ct') {
- $pkg->{iface_in} = 'lo';
- $pkg->{iface_out} = 'venet0';
- $chain = 'PVEFW-OUTPUT';
- $next_route_state = 'venet-in';
- } elsif ($target->{type} eq 'vm') {
- $pkg->{iface_in} = 'lo';
- $pkg->{iface_out} = $target->{bridge} || die 'internal error';
- $chain = 'PVEFW-OUTPUT';
- $next_route_state = 'fwbr-in';
- } else {
- die "implement me";
- }
-
- } elsif ($route_state eq 'venet-out') {
-
- if ($target->{type} eq 'host') {
-
- $chain = 'PVEFW-INPUT';
- $pkg->{iface_in} = 'venet0';
- $pkg->{iface_out} = 'lo';
- $next_route_state = 'host';
-
- } elsif ($target->{type} eq 'vm') {
-
- $chain = 'PVEFW-FORWARD';
- $pkg->{iface_in} = 'venet0';
- $pkg->{iface_out} = $target->{bridge} || die 'internal error';
- $next_route_state = 'fwbr-in';
-
- } elsif ($target->{type} eq 'ct') {
-
- $chain = 'PVEFW-FORWARD';
- $pkg->{iface_in} = 'venet0';
- $pkg->{iface_out} = 'venet0';
- $next_route_state = 'venet-in';
-
- } else {
- die "implement me";
- }
-
- } elsif ($route_state eq 'fwbr-out') {
-
- $chain = 'PVEFW-FORWARD';
- $next_route_state = $from_info->{bridge} || die 'internal error';
- $next_physdev_in = $from_info->{fwpr} || die 'internal error';
- $pkg->{iface_in} = $from_info->{fwbr} || die 'internal error';
- $pkg->{iface_out} = $from_info->{fwbr} || die 'internal error';
- $pkg->{physdev_in} = $from_info->{tapdev} || die 'internal error';
- $pkg->{physdev_out} = $from_info->{fwln} || die 'internal error';
-
- } elsif ($route_state eq 'fwbr-in') {
-
- $chain = 'PVEFW-FORWARD';
- $next_route_state = $target->{tapdev};
- $pkg->{iface_in} = $target->{fwbr} || die 'internal error';
- $pkg->{iface_out} = $target->{fwbr} || die 'internal error';
- $pkg->{physdev_in} = $target->{fwln} || die 'internal error';
- $pkg->{physdev_out} = $target->{tapdev} || die 'internal error';
-
- } elsif ($route_state =~ m/^vmbr\d+$/) {
-
- die "missing physdev_in - internal error?" if !$physdev_in;
-
- if ($target->{type} eq 'host') {
-
- $chain = 'PVEFW-INPUT';
- $pkg->{iface_in} = $route_state;
- $pkg->{iface_out} = 'lo';
- $next_route_state = 'host';
-
- } elsif ($target->{type} eq 'ct') {
-
- $chain = 'PVEFW-FORWARD';
- $pkg->{iface_in} = $route_state;
- $pkg->{iface_out} = 'venet0';
- $next_route_state = 'venet-in';
-
- } elsif ($target->{type} eq 'vm') {
-
- $chain = 'PVEFW-FORWARD';
- if ($route_state eq $target->{bridge}) {
- $pkg->{iface_in} = $route_state;
- $pkg->{iface_out} = $route_state;
- $pkg->{physdev_in} = $physdev_in;
- $pkg->{physdev_out} = $target->{fwpr} || die 'internal error';
- } else {
- $pkg->{iface_in} = $route_state;
- $pkg->{iface_out} = $route_state;
- $pkg->{physdev_in} = $physdev_in;
- # do not set physdev_out (same behavior as kernel)
- }
- $next_route_state = 'fwbr-in';
-
- } else {
- die "implement me";
- }
-
- } else {
- die "implement me $route_state";
- }
-
- die "internal error" if !defined($next_route_state);
-
- 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';
- }
-
- $route_state = $next_route_state;
-
- $physdev_in = $next_physdev_in;
- }
-
- return 'ACCEPT';
-}
-
-sub extract_ct_info {
- my ($vmdata, $vmid) = @_;
-
- my $info = { type => 'ct', vmid => $vmid };
-
- my $conf = $vmdata->{openvz}->{$vmid} || die "no such CT '$vmid'";
- if ($conf->{ip_address}) {
- $info->{ip_address} = $conf->{ip_address}->{value};
- } else {
- die "implement me";
- }
- return $info;
+sub print_usage_and_exit {
+ die "usage: $0 [--debug] [testfile [testid]]\n";
}
-sub extract_vm_info {
- my ($vmdata, $vmid) = @_;
-
- my $info = { type => 'vm', vmid => $vmid };
-
- my $conf = $vmdata->{qemu}->{$vmid} || die "no such VM '$vmid'";
- my $net = PVE::QemuServer::parse_net($conf->{net0});
- $info->{macaddr} = $net->{macaddr} || die "unable to get mac address";
- $info->{bridge} = $net->{bridge} || die "unable to get bridge";
- $info->{fwbr} = "fwbr${vmid}i0";
- $info->{tapdev} = "tap${vmid}i0";
- $info->{fwln} = "fwln${vmid}i0";
- $info->{fwpr} = "fwpr${vmid}p0";
-
- return $info;
+if (!GetOptions ('debug' => \$debug)) {
+ print_usage_and_exit();
}
-sub simulate_firewall {
- my ($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'";
-
- die "from/to needs to be different" if $from eq $to;
-
- my $pkg = {
- proto => 'tcp',
- sport => '1234',
- dport => '4321',
- source => '10.11.12.13',
- dest => '10.11.12.14',
- };
-
- while (my ($k,$v) = each %$test) {
- $pkg->{$k} = $v;
- }
-
- my $from_info = {};
-
- my $start_state;
-
- if ($from eq 'host') {
- $from_info->{type} = 'host';
- $start_state = 'host';
- } elsif ($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};
- $start_state = 'venet-out';
- } else {
- die "implement me";
- }
- } elsif ($from =~ m/^vm(\d+)$/) {
- my $vmid = $1;
- $from_info = extract_vm_info($vmdata, $vmid);
- $start_state = 'fwbr-out';
- $pkg->{mac_source} = $from_info->{macaddr};
- } else {
- die "implement me";
- }
-
- my $target;
-
- if ($to eq 'host') {
- $target->{type} = 'host';
- $target->{iface} = 'host';
- } elsif ($to =~ m/^ct(\d+)$/) {
- my $vmid = $1;
- $target = extract_ct_info($vmdata, $vmid);
- $target->{iface} = 'venet-in';
+PVE::FirewallSimulator::debug($debug);
+
+my $testfilename = shift;
+my $testid = shift;
- if ($target->{ip_address}) {
- $pkg->{dest} = $target->{ip_address};
- } else {
- die "implement me";
- }
- } elsif ($to =~ m/^vm(\d+)$/) {
- my $vmid = $1;
- $target = extract_vm_info($vmdata, $vmid);
- $target->{iface} = $target->{tapdev};
- } else {
- die "implement me";
- }
+sub run_tests {
+ my ($vmdata, $testdir, $testfile, $testid) = @_;
- my $res = route_packet($ruleset, $ipset_ruleset, $pkg, $from_info, $target, $start_state);
+ $testfile = 'tests' if !$testfile;
- die "test failed ($res != $action)\n" if $action ne $res;
- return undef;
-}
+ $vmdata->{testdir} = $testdir;
-sub run_tests {
- my ($vmdata, $testdir) = @_;
+ my $host_ip = '172.16.1.2';
- $vmdata->{testdir} = $testdir;
+ PVE::Firewall::local_network('172.16.1.0/24');
my ($ruleset, $ipset_ruleset) =
- PVE::Firewall::compile(undef, undef, $vmdata);
+ PVE::Firewall::compile(undef, undef, $vmdata, 1);
- my $testfile = "$testdir/tests";
- my $fh = IO::File->new($testfile) ||
- die "unable to open '$testfile' - $!\n";
+ my $filename = "$testdir/$testfile";
+ my $fh = IO::File->new($filename) ||
+ die "unable to open '$filename' - $!\n";
+ my $testcount = 0;
while (defined(my $line = <$fh>)) {
next if $line =~ m/^\s*$/;
next if $line =~ m/^#.*$/;
if ($line =~ m/^\{.*\}\s*$/) {
my $test = eval $line;
die $@ if $@;
- $trace = '';
+ next if defined($testid) && (!defined($test->{id}) || ($testid ne $test->{id}));
+ PVE::FirewallSimulator::reset_trace();
print Dumper($ruleset) if $debug;
- eval { simulate_firewall($ruleset, $ipset_ruleset, $vmdata, $test); };
+ $testcount++;
+ eval {
+ my @test_zones = qw(host outside nfvm vm100 ct200);
+ if (!defined($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} = $zone;
+ PVE::FirewallSimulator::add_trace("Set Zone: to => '$zone'\n");
+ PVE::FirewallSimulator::simulate_firewall($ruleset, $ipset_ruleset,
+ $host_ip, $vmdata, $test);
+ }
+ } elsif (!defined($test->{from})) {
+ foreach my $zone (@test_zones) {
+ next if $zone eq $test->{to};
+ $test->{from} = $zone;
+ PVE::FirewallSimulator::add_trace("Set Zone: from => '$zone'\n");
+ PVE::FirewallSimulator::simulate_firewall($ruleset, $ipset_ruleset,
+ $host_ip, $vmdata, $test);
+ }
+ } else {
+ PVE::FirewallSimulator::simulate_firewall($ruleset, $ipset_ruleset,
+ $host_ip, $vmdata, $test);
+ }
+ };
if (my $err = $@) {
print Dumper($ruleset) if !$debug;
- print "$trace\n" if !$debug;
+ print PVE::FirewallSimulator::get_trace() . "\n" if !$debug;
- print "$testfile line $.: $line";
+ print "$filename line $.: $line";
print "test failed: $err\n";
}
}
- print "PASS: $testfile\n";
+ die "no tests found\n" if $testcount <= 0;
+
+ print "PASS: $filename\n";
return undef;
}
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",
+ net1 => "e1000=0E:0B:38:B9:B4:21,bridge=vmbr1,firewall=1",
+ net2 => "e1000=0E:0B:38:BA:B4:21,bridge=vmbr2,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 => {
},
};
-foreach my $dir (<test-*>) {
- next if ! -d $dir;
- run_tests($vmdata, $dir);
+if ($testfilename) {
+ my $testfile;
+ my $dir;
+
+ if (-d $testfilename) {
+ $dir = $testfilename;
+ } elsif (-f $testfilename) {
+ $dir = dirname($testfilename);
+ $testfile = basename($testfilename);
+ } else {
+ die "no such file/dir '$testfilename'\n";
+ }
+
+ run_tests($vmdata, $dir, $testfile, $testid);
+
+} else {
+ foreach my $dir (<test-*>) {
+ next if ! -d $dir;
+ run_tests($vmdata, $dir);
+ }
}
print "OK - all tests passed\n";
projects / pve-firewall.git / blobdiff