return $__local_network;
}
+my $max_ipset_name_length = 27;
+
+sub compute_ipset_chain_name {
+ my ($vmid, $ipset_name) = @_;
+
+ $vmid = 0 if !defined($vmid);
+
+ my $id = "$vmid-${ipset_name}";
+
+
+ if ((length($id) + 6) > $max_ipset_name_length) {
+ $id = PVE::Tools::fnv31a_hex($id);
+ }
+
+ return "PVEFW-$id";
+}
+
sub parse_address_list {
my ($str) = @_;
if ($source =~ m/^\+(${security_group_name_pattern})$/) {
my $name = $1;
if ($fw_conf && $fw_conf->{ipset}->{$name}) {
- die "implement me";
+ my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
+ push @cmd, "-m set --match-set ${ipset_chain} src";
} elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
- push @cmd, "-m set --match-set PVEFW-$1 src";
+ my $ipset_chain = compute_ipset_chain_name(0, $name);
+ push @cmd, "-m set --match-set ${ipset_chain} src";
} else {
die "no such ipset '$name'\n";
}
if ($dest =~ m/^\+(${security_group_name_pattern})$/) {
my $name = $1;
if ($fw_conf && $fw_conf->{ipset}->{$name}) {
- die "implement me";
+ my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
+ push @cmd, "-m set --match-set ${ipset_chain} src";
} elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
- push @cmd, "-m set --match-set PVEFW-$1 dst";
+ my $ipset_chain = compute_ipset_chain_name(0, $name);
+ push @cmd, "-m set --match-set ${ipset_chain} dst";
} else {
die "no such ipset '$name'\n";
}
ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
}
- ruleset_addrule($ruleset, $chain, "-m set --match-set PVEFW-blacklist src -j PVEFW-blacklist");
+ my $ipset_chain = compute_ipset_chain_name(0, 'blacklist');
+ ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist");
}
if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
}
# allow standard traffic for management ipset (includes cluster network)
- my $mngmntsrc = "-m set --match-set PVEFW-management src";
+ my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management");
+ my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
return undef;
}
-sub parse_vm_fw_rules {
- my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
-
- my $res = {
- rules => [],
- options => {},
- aliases => {},
- };
-
- my $section;
-
- while (defined(my $line = <$fh>)) {
- next if $line =~ m/^#/;
- next if $line =~ m/^\s*$/;
-
- my $linenr = $fh->input_line_number();
- my $prefix = "$filename (line $linenr)";
-
- if ($line =~ m/^\[(\S+)\]\s*$/i) {
- $section = lc($1);
- warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
- next;
- }
- if (!$section) {
- warn "$prefix: skip line - no section";
- next;
- }
-
- next if !$res->{$section}; # skip undefined section
-
- if ($section eq 'options') {
- eval {
- my ($opt, $value) = parse_vmfw_option($line);
- $res->{options}->{$opt} = $value;
- };
- warn "$prefix: $@" if $@;
- next;
- }
-
- if ($section eq 'aliases') {
- eval {
- my $data = parse_alias($line);
- $res->{aliases}->{lc($data->{name})} = $data;
- };
- warn "$prefix: $@" if $@;
- next;
- }
-
- my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
- if (my $err = $@) {
- warn "$prefix: $err";
- next;
- }
-
- push @{$res->{$section}}, $rule;
- }
-
- return $res;
-}
-
-sub parse_host_fw_rules {
- my ($filename, $fh, $cluster_conf, $verbose) = @_;
-
- my $res = { rules => [], options => {}};
-
- my $section;
-
- while (defined(my $line = <$fh>)) {
- next if $line =~ m/^#/;
- next if $line =~ m/^\s*$/;
-
- my $linenr = $fh->input_line_number();
- my $prefix = "$filename (line $linenr)";
-
- if ($line =~ m/^\[(\S+)\]\s*$/i) {
- $section = lc($1);
- warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
- next;
- }
- if (!$section) {
- warn "$prefix: skip line - no section";
- next;
- }
-
- next if !$res->{$section}; # skip undefined section
-
- if ($section eq 'options') {
- eval {
- my ($opt, $value) = parse_hostfw_option($line);
- $res->{options}->{$opt} = $value;
- };
- warn "$prefix: $@" if $@;
- next;
- }
-
- my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, 'host', $verbose); };
- if (my $err = $@) {
- warn "$prefix: $err";
- next;
- }
-
- push @{$res->{$section}}, $rule;
- }
-
- return $res;
-}
-
-sub parse_cluster_fw_rules {
- my ($filename, $fh, $verbose) = @_;
+sub generic_fw_rules_parser {
+ my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
my $section;
my $group;
- my $res = {
- rules => [],
- options => {},
- aliases => {},
- groups => {},
- group_comments => {},
- ipset => {} ,
- ipset_comments => {},
- };
+ my $res = $empty_conf;
while (defined(my $line = <$fh>)) {
next if $line =~ m/^#/;
my $linenr = $fh->input_line_number();
my $prefix = "$filename (line $linenr)";
- if ($line =~ m/^\[options\]$/i) {
+ if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
$section = 'options';
next;
}
- if ($line =~ m/^\[aliases\]$/i) {
+ if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
$section = 'aliases';
next;
}
- if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
+ if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
$section = 'groups';
$group = lc($1);
my $comment = $2;
next;
}
- if ($line =~ m/^\[rules\]$/i) {
+ if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
$section = 'rules';
next;
}
- if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
+ if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
$section = 'ipset';
$group = lc($1);
my $comment = $2;
if ($section eq 'options') {
eval {
- my ($opt, $value) = parse_clusterfw_option($line);
+ my ($opt, $value);
+ if ($rule_env eq 'cluster') {
+ ($opt, $value) = parse_clusterfw_option($line);
+ } elsif ($rule_env eq 'host') {
+ ($opt, $value) = parse_hostfw_option($line);
+ } else {
+ ($opt, $value) = parse_vmfw_option($line);
+ }
$res->{options}->{$opt} = $value;
};
warn "$prefix: $@" if $@;
warn "$prefix: $@" if $@;
} elsif ($section eq 'rules') {
my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $res, undef, 'cluster', $verbose); };
+ eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
if (my $err = $@) {
warn "$prefix: $err";
next;
push @{$res->{$section}}, $rule;
} elsif ($section eq 'groups') {
my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $res, undef, 'group', $verbose); };
+ eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
if (my $err = $@) {
warn "$prefix: $err";
next;
$entry->{comment} = $comment if $comment;
push @{$res->{$section}->{$group}}, $entry;
+ } else {
+ warn "$prefix: skip line - unknown section\n";
+ next;
}
}
return $res;
}
+sub parse_host_fw_rules {
+ my ($filename, $fh, $cluster_conf, $verbose) = @_;
+
+ my $empty_conf = { rules => [], options => {}};
+
+ return generic_fw_rules_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
+}
+
+sub parse_vm_fw_rules {
+ my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
+
+ my $empty_conf = {
+ rules => [],
+ options => {},
+ aliases => {},
+ ipset => {} ,
+ ipset_comments => {},
+ };
+
+ return generic_fw_rules_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
+}
+
+sub parse_cluster_fw_rules {
+ my ($filename, $fh, $verbose) = @_;
+
+ my $section;
+ my $group;
+
+ my $empty_conf = {
+ rules => [],
+ options => {},
+ aliases => {},
+ groups => {},
+ group_comments => {},
+ ipset => {} ,
+ ipset_comments => {},
+ };
+
+ return generic_fw_rules_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
+}
+
sub run_locked {
my ($code, @param) = @_;
my $filename = "$dir/$vmid.fw";
if (my $fh = IO::File->new($filename, O_RDONLY)) {
$vmfw_conf = parse_vm_fw_rules($filename, $fh, $cluster_conf, $rule_env, $verbose);
+ $vmfw_conf->{vmid} = $vmid;
}
return $vmfw_conf;
return $raw;
};
-my $format_ipset = sub {
- my ($options) = @_;
-
+my $format_ipsets = sub {
+ my ($fw_conf) = @_;
+
my $raw = '';
- my $nethash = {};
- foreach my $entry (@$options) {
- $nethash->{$entry->{cidr}} = $entry;
- }
+ foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
+ if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
+ my $utf8comment = encode('utf8', $comment);
+ $raw .= "[IPSET $ipset] # $utf8comment\n\n";
+ } else {
+ $raw .= "[IPSET $ipset]\n\n";
+ }
+ my $options = $fw_conf->{ipset}->{$ipset};
- foreach my $cidr (sort keys %$nethash) {
- my $entry = $nethash->{$cidr};
- my $line = $entry->{nomatch} ? '!' : '';
- $line .= $entry->{cidr};
- $line .= " # " . encode('utf8', $entry->{comment})
- if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
- $raw .= "$line\n";
+ my $nethash = {};
+ foreach my $entry (@$options) {
+ $nethash->{$entry->{cidr}} = $entry;
+ }
+
+ foreach my $cidr (sort keys %$nethash) {
+ my $entry = $nethash->{$cidr};
+ my $line = $entry->{nomatch} ? '!' : '';
+ $line .= $entry->{cidr};
+ $line .= " # " . encode('utf8', $entry->{comment})
+ if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
+ $raw .= "$line\n";
+ }
+
+ $raw .= "\n";
}
return $raw;
my $aliases = $vmfw_conf->{aliases};
$raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
+ $raw .= &$format_ipsets($vmfw_conf);
+
my $rules = $vmfw_conf->{rules} || [];
if (scalar(@$rules)) {
$raw .= "[RULES]\n\n";
}
sub generate_ipset_chains {
- my ($ipset_ruleset, $fw_conf) = @_;
+ my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_;
foreach my $ipset (keys %{$fw_conf->{ipset}}) {
- generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}, $fw_conf->{aliases});
+ my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset);
+ generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf);
}
}
sub generate_ipset {
- my ($ipset_ruleset, $name, $options, $aliases) = @_;
+ my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_;
+
+ die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name});
my $hashsize = scalar(@$options);
if ($hashsize <= 64) {
$hashsize = round_powerof2($hashsize);
}
- push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
+ $ipset_ruleset->{$name} = ["create $name hash:net family inet hashsize $hashsize maxelem $hashsize"];
# remove duplicates
my $nethash = {};
my $cidr = $entry->{cidr};
if ($cidr =~ m/^${ip_alias_pattern}$/) {
my $alias = lc($cidr);
- if ($aliases->{$alias}) {
- $entry->{cidr} = $aliases->{$alias}->{cidr};
+ my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
+ $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
+ if ($e) {
+ $entry->{cidr} = $e->{cidr};
$nethash->{$entry->{cidr}} = $entry;
} else {
- warn "no such alias '$cidr'\n" if !$aliases->{$alias};
+ warn "no such alias '$cidr'\n";
}
} else {
$nethash->{$entry->{cidr}} = $entry;
my $aliases = $cluster_conf->{aliases};
$raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
- foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) {
- if (my $comment = $cluster_conf->{ipset_comments}->{$ipset}) {
- my $utf8comment = encode('utf8', $comment);
- $raw .= "[IPSET $ipset] # $utf8comment\n\n";
- } else {
- $raw .= "[IPSET $ipset]\n\n";
- }
- my $options = $cluster_conf->{ipset}->{$ipset};
- $raw .= &$format_ipset($options);
- $raw .= "\n";
- }
-
+ $raw .= &$format_ipsets($cluster_conf);
+
my $rules = $cluster_conf->{rules};
if (scalar(@$rules)) {
$raw .= "[RULES]\n\n";
}
$cluster_conf->{ipset}->{venet0} = [];
+ my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
my $localnet;
if ($cluster_conf->{aliases}->{local_network}) {
ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
+
ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
- ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set PVEFW-venet0 src -j PVEFW-VENET-OUT");
- ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set PVEFW-venet0 src -j PVEFW-VENET-OUT");
+ ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
+ ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
- ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set PVEFW-venet0 dst -j PVEFW-VENET-IN");
+ ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
generate_std_chains($ruleset, $hostfw_options);
my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
+ my $ipset_ruleset = {};
+
if ($hostfw_enable) {
eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf); };
warn $@ if $@; # just to be sure - should not happen
}
- ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set PVEFW-venet0 dst -j PVEFW-VENET-IN");
+ ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
# generate firewall rules for QEMU VMs
foreach my $vmid (keys %{$vmdata->{qemu}}) {
return if !$vmfw_conf;
return if !$vmfw_conf->{options}->{enable};
+ generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
+
foreach my $netid (keys %$conf) {
next if $netid !~ m/^net(\d+)$/;
my $net = PVE::QemuServer::parse_net($conf->{$netid});
return if !$vmfw_conf;
return if !$vmfw_conf->{options}->{enable};
+ generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
+
if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
my $ip = $conf->{ip_address}->{value};
$ip =~ s/\s+/,/g;
ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
}
- my $ipset_ruleset = {};
- generate_ipset_chains($ipset_ruleset, $cluster_conf);
+ generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
return ($ruleset, $ipset_ruleset);
}
projects / pve-firewall.git / blobdiff