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Commit | Line | Data |
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b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
cbb5d6f3 | 5 | use POSIX; |
b6360c3f | 6 | use Data::Dumper; |
09d5f68e | 7 | use Digest::SHA; |
6d959e3f | 8 | use Socket qw(AF_INET6 inet_ntop inet_pton); |
c8301d63 | 9 | use PVE::INotify; |
7ca36671 | 10 | use PVE::Exception qw(raise raise_param_exc); |
e74a87f5 | 11 | use PVE::JSONSchema qw(register_standard_option get_standard_option); |
c8301d63 | 12 | use PVE::Cluster; |
5f0a912c | 13 | use PVE::ProcFSTools; |
70e524eb | 14 | use PVE::Tools qw($IPV4RE $IPV6RE); |
2e1ae6b9 | 15 | use PVE::Network; |
eedcb564 | 16 | use PVE::SafeSyslog; |
6b9f68a2 | 17 | use File::Basename; |
5e1267a5 DM |
18 | use File::Path; |
19 | use IO::File; | |
ecbea048 | 20 | use Net::IP; |
1a301a8d | 21 | use PVE::Tools qw(run_command lock_file dir_glob_foreach); |
30c1ae52 | 22 | use Encode; |
cfd7cd9c | 23 | use Storable qw(dclone); |
ecbea048 | 24 | |
63c91681 | 25 | my $hostfw_conf_filename = "/etc/pve/local/host.fw"; |
21053409 DM |
26 | my $pvefw_conf_dir = "/etc/pve/firewall"; |
27 | my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw"; | |
fca39c2c | 28 | |
fdefeeab | 29 | # dynamically include PVE::QemuServer and PVE::LXC |
d9fee004 DM |
30 | # to avoid dependency problems |
31 | my $have_qemu_server; | |
32 | eval { | |
33 | require PVE::QemuServer; | |
b5a16dd3 | 34 | require PVE::QemuConfig; |
d9fee004 DM |
35 | $have_qemu_server = 1; |
36 | }; | |
37 | ||
3b4882dc AG |
38 | my $have_lxc; |
39 | eval { | |
40 | require PVE::LXC; | |
41 | $have_lxc = 1; | |
42 | }; | |
43 | ||
44 | ||
259db1e6 DM |
45 | my $pve_fw_status_dir = "/var/lib/pve-firewall"; |
46 | ||
47 | mkdir $pve_fw_status_dir; # make sure this exists | |
48 | ||
351052d1 DM |
49 | my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
50 | my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; | |
f9792937 | 51 | our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
351052d1 DM |
52 | |
53 | my $max_alias_name_length = 64; | |
54 | my $max_ipset_name_length = 64; | |
5c53cde4 | 55 | my $max_group_name_length = 18; |
351052d1 | 56 | |
48e3963e WB |
57 | my $PROTOCOLS_WITH_PORTS = { |
58 | udp => 1, 17 => 1, | |
59 | udplite => 1, 136 => 1, | |
60 | tcp => 1, 6 => 1, | |
61 | dccp => 1, 33 => 1, | |
62 | sctp => 1, 132 => 1, | |
63 | }; | |
64 | ||
ae029a88 DM |
65 | PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr); |
66 | sub pve_verify_ip_or_cidr { | |
009ee3ac DM |
67 | my ($cidr, $noerr) = @_; |
68 | ||
70e524eb | 69 | if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) { |
e34d0e58 | 70 | return $cidr if Net::IP->new($cidr); |
7c619bbb DM |
71 | return undef if $noerr; |
72 | die Net::IP::Error() . "\n"; | |
73 | } | |
74 | return undef if $noerr; | |
75 | die "value does not look like a valid IP address or CIDR network\n"; | |
76 | } | |
77 | ||
ae029a88 DM |
78 | PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias); |
79 | sub pve_verify_ip_or_cidr_or_alias { | |
7c619bbb DM |
80 | my ($cidr, $noerr) = @_; |
81 | ||
82 | return if $cidr =~ m/^(?:$ip_alias_pattern)$/; | |
83 | ||
ae029a88 | 84 | return pve_verify_ip_or_cidr($cidr, $noerr); |
009ee3ac DM |
85 | } |
86 | ||
e74a87f5 DM |
87 | PVE::JSONSchema::register_standard_option('ipset-name', { |
88 | description => "IP set name.", | |
89 | type => 'string', | |
351052d1 | 90 | pattern => $ipset_name_pattern, |
387d0ffc | 91 | minLength => 2, |
351052d1 | 92 | maxLength => $max_ipset_name_length, |
387d0ffc DM |
93 | }); |
94 | ||
81d574a7 DM |
95 | PVE::JSONSchema::register_standard_option('pve-fw-alias', { |
96 | description => "Alias name.", | |
97 | type => 'string', | |
351052d1 | 98 | pattern => $ip_alias_pattern, |
81d574a7 | 99 | minLength => 2, |
351052d1 | 100 | maxLength => $max_alias_name_length, |
81d574a7 DM |
101 | }); |
102 | ||
6302c41f DM |
103 | PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => { |
104 | description => "Log level.", | |
e34d0e58 | 105 | type => 'string', |
6302c41f DM |
106 | enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'], |
107 | optional => 1, | |
108 | }); | |
109 | ||
387d0ffc DM |
110 | PVE::JSONSchema::register_standard_option('pve-security-group-name', { |
111 | description => "Security Group name.", | |
112 | type => 'string', | |
44be8ceb | 113 | pattern => $security_group_name_pattern, |
387d0ffc | 114 | minLength => 2, |
351052d1 | 115 | maxLength => $max_group_name_length, |
e74a87f5 | 116 | }); |
009ee3ac | 117 | |
cbb5d6f3 DM |
118 | my $feature_ipset_nomatch = 0; |
119 | eval { | |
120 | my (undef, undef, $release) = POSIX::uname(); | |
121 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
122 | my ($major, $minor) = ($1, $2); | |
123 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
124 | ($major == 3 && $minor >= 7); | |
125 | } | |
126 | ||
127 | }; | |
128 | ||
c8301d63 DM |
129 | my $nodename = PVE::INotify::nodename(); |
130 | ||
06320eb0 DM |
131 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
132 | ||
56f313f7 | 133 | my $default_log_level = 'nolog'; # avoid logs by default |
2d404ffc DM |
134 | |
135 | my $log_level_hash = { | |
136 | debug => 7, | |
137 | info => 6, | |
138 | notice => 5, | |
139 | warning => 4, | |
140 | err => 3, | |
141 | crit => 2, | |
142 | alert => 1, | |
143 | emerg => 0, | |
144 | }; | |
145 | ||
044409e5 TW |
146 | # %rule |
147 | # | |
148 | # name => optional | |
30c390f9 | 149 | # enable => [0|1] |
044409e5 TW |
150 | # action => |
151 | # proto => | |
30c390f9 TW |
152 | # sport => port[,port[,port]].. or port:port |
153 | # dport => port[,port[,port]].. or port:port | |
044409e5 TW |
154 | # log => optional, loglevel |
155 | # logmsg => optional, logmsg - overwrites default | |
30c390f9 TW |
156 | # iface_in => incomin interface |
157 | # iface_out => outgoing interface | |
044409e5 TW |
158 | # match => optional, overwrites generation of match |
159 | # target => optional, overwrites action | |
160 | ||
35d1d6da DM |
161 | # we need to overwrite some macros for ipv6 |
162 | my $pve_ipv6fw_macros = { | |
163 | 'Ping' => [ | |
164 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
165 | ], | |
b3d75afb WB |
166 | 'NeighborDiscovery' => [ |
167 | "IPv6 neighbor solicitation, neighbor and router advertisement", | |
c71cdd44 | 168 | { action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' }, |
b3d75afb WB |
169 | { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' }, |
170 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' }, | |
171 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' }, | |
172 | ], | |
a42e9763 | 173 | 'DHCPv6' => [ |
24dd51c2 | 174 | "DHCPv6 traffic", |
a42e9763 WB |
175 | { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' }, |
176 | ], | |
35d1d6da DM |
177 | 'Trcrt' => [ |
178 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, | |
179 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
180 | ], | |
181 | }; | |
182 | ||
857f62c8 | 183 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 184 | my $pve_fw_macros = { |
857f62c8 | 185 | 'Amanda' => [ |
ebd54ae9 | 186 | "Amanda Backup", |
857f62c8 DM |
187 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
188 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
189 | ], | |
190 | 'Auth' => [ | |
ebd54ae9 | 191 | "Auth (identd) traffic", |
857f62c8 DM |
192 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
193 | ], | |
194 | 'BGP' => [ | |
ebd54ae9 | 195 | "Border Gateway Protocol traffic", |
857f62c8 DM |
196 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
197 | ], | |
198 | 'BitTorrent' => [ | |
ebd54ae9 | 199 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 200 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
201 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
202 | ], | |
203 | 'BitTorrent32' => [ | |
ebd54ae9 | 204 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
205 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
206 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
207 | ], | |
06ba9c44 AG |
208 | 'Ceph' => [ |
209 | "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)", | |
210 | { action => 'PARAM', proto => 'tcp', dport => '6789' }, | |
211 | { action => 'PARAM', proto => 'tcp', dport => '6800:7300' }, | |
212 | ], | |
857f62c8 | 213 | 'CVS' => [ |
ebd54ae9 | 214 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
215 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
216 | ], | |
217 | 'Citrix' => [ | |
ebd54ae9 | 218 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
219 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
220 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
221 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
222 | ], | |
223 | 'DAAP' => [ | |
ebd54ae9 | 224 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
225 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
226 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
227 | ], | |
228 | 'DCC' => [ | |
ebd54ae9 | 229 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
230 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
231 | ], | |
232 | 'DHCPfwd' => [ | |
d2c3266d | 233 | "Forwarded DHCP traffic", |
857f62c8 | 234 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
857f62c8 DM |
235 | ], |
236 | 'DNS' => [ | |
ebd54ae9 | 237 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
238 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
239 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
240 | ], | |
241 | 'Distcc' => [ | |
ebd54ae9 | 242 | "Distributed Compiler service", |
857f62c8 DM |
243 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
244 | ], | |
857f62c8 | 245 | 'FTP' => [ |
ebd54ae9 | 246 | "File Transfer Protocol", |
857f62c8 DM |
247 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
248 | ], | |
249 | 'Finger' => [ | |
ebd54ae9 | 250 | "Finger protocol (RFC 742)", |
857f62c8 DM |
251 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
252 | ], | |
253 | 'GNUnet' => [ | |
ebd54ae9 | 254 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
255 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
256 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
257 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
258 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
259 | ], | |
260 | 'GRE' => [ | |
d2c3266d | 261 | "Generic Routing Encapsulation tunneling protocol", |
857f62c8 | 262 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
263 | ], |
264 | 'Git' => [ | |
ebd54ae9 | 265 | "Git distributed revision control traffic", |
857f62c8 DM |
266 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
267 | ], | |
857f62c8 | 268 | 'HKP' => [ |
ebd54ae9 | 269 | "OpenPGP HTTP keyserver protocol traffic", |
857f62c8 DM |
270 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
271 | ], | |
272 | 'HTTP' => [ | |
ebd54ae9 | 273 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
274 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
275 | ], | |
857f62c8 | 276 | 'HTTPS' => [ |
ebd54ae9 | 277 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
278 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
279 | ], | |
280 | 'ICPV2' => [ | |
ebd54ae9 | 281 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
282 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
283 | ], | |
284 | 'ICQ' => [ | |
ebd54ae9 | 285 | "AOL Instant Messenger traffic", |
857f62c8 DM |
286 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
287 | ], | |
288 | 'IMAP' => [ | |
ebd54ae9 | 289 | "Internet Message Access Protocol", |
857f62c8 DM |
290 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
291 | ], | |
292 | 'IMAPS' => [ | |
ebd54ae9 | 293 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
294 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
295 | ], | |
296 | 'IPIP' => [ | |
d2c3266d | 297 | "IPIP capsulation traffic", |
857f62c8 | 298 | { action => 'PARAM', proto => '94' }, |
857f62c8 | 299 | ], |
857f62c8 | 300 | 'IPsec' => [ |
d2c3266d | 301 | "IPsec traffic", |
857f62c8 DM |
302 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
303 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
304 | ], |
305 | 'IPsecah' => [ | |
d2c3266d | 306 | "IPsec authentication (AH) traffic", |
857f62c8 DM |
307 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
308 | { action => 'PARAM', proto => '51' }, | |
857f62c8 DM |
309 | ], |
310 | 'IPsecnat' => [ | |
d2c3266d | 311 | "IPsec traffic and Nat-Traversal", |
857f62c8 DM |
312 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
313 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
314 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
315 | ], |
316 | 'IRC' => [ | |
ebd54ae9 | 317 | "Internet Relay Chat traffic", |
857f62c8 DM |
318 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
319 | ], | |
857f62c8 | 320 | 'Jetdirect' => [ |
ebd54ae9 | 321 | "HP Jetdirect printing", |
857f62c8 DM |
322 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
323 | ], | |
324 | 'L2TP' => [ | |
ebd54ae9 | 325 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 | 326 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
857f62c8 DM |
327 | ], |
328 | 'LDAP' => [ | |
ebd54ae9 | 329 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
330 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
331 | ], | |
332 | 'LDAPS' => [ | |
ebd54ae9 | 333 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
334 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
335 | ], | |
336 | 'MSNP' => [ | |
ebd54ae9 | 337 | "Microsoft Notification Protocol", |
857f62c8 DM |
338 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
339 | ], | |
340 | 'MSSQL' => [ | |
ebd54ae9 | 341 | "Microsoft SQL Server", |
857f62c8 DM |
342 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
343 | ], | |
344 | 'Mail' => [ | |
ebd54ae9 | 345 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
346 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
347 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
348 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
349 | ], | |
7831e1e3 EK |
350 | 'MDNS' => [ |
351 | "Multicast DNS", | |
352 | { action => 'PARAM', proto => 'udp', dport => '5353' }, | |
353 | ], | |
857f62c8 | 354 | 'Munin' => [ |
ebd54ae9 | 355 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
356 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
357 | ], | |
358 | 'MySQL' => [ | |
ebd54ae9 | 359 | "MySQL server", |
857f62c8 DM |
360 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
361 | ], | |
362 | 'NNTP' => [ | |
ebd54ae9 | 363 | "NNTP traffic (Usenet).", |
857f62c8 DM |
364 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
365 | ], | |
366 | 'NNTPS' => [ | |
ebd54ae9 | 367 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
368 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
369 | ], | |
370 | 'NTP' => [ | |
ebd54ae9 | 371 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
372 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
373 | ], | |
857f62c8 | 374 | 'OSPF' => [ |
ebd54ae9 | 375 | "OSPF multicast traffic", |
857f62c8 DM |
376 | { action => 'PARAM', proto => '89' }, |
377 | ], | |
378 | 'OpenVPN' => [ | |
ebd54ae9 | 379 | "OpenVPN traffic", |
857f62c8 DM |
380 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
381 | ], | |
382 | 'PCA' => [ | |
ebd54ae9 | 383 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
384 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
385 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
386 | ], | |
387 | 'POP3' => [ | |
ebd54ae9 | 388 | "POP3 traffic", |
857f62c8 DM |
389 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
390 | ], | |
391 | 'POP3S' => [ | |
ebd54ae9 | 392 | "Encrypted POP3 traffic", |
857f62c8 DM |
393 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
394 | ], | |
395 | 'PPtP' => [ | |
ebd54ae9 | 396 | "Point-to-Point Tunneling Protocol", |
857f62c8 | 397 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
398 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, |
399 | ], | |
400 | 'Ping' => [ | |
ebd54ae9 | 401 | "ICMP echo request", |
269d4f13 | 402 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
403 | ], |
404 | 'PostgreSQL' => [ | |
ebd54ae9 | 405 | "PostgreSQL server", |
857f62c8 DM |
406 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
407 | ], | |
408 | 'Printer' => [ | |
ebd54ae9 | 409 | "Line Printer protocol printing", |
857f62c8 DM |
410 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
411 | ], | |
412 | 'RDP' => [ | |
ebd54ae9 | 413 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
414 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
415 | ], | |
d2c3266d | 416 | 'RIP' => [ |
ebd54ae9 | 417 | "Routing Information Protocol (bidirectional)", |
857f62c8 | 418 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
857f62c8 DM |
419 | ], |
420 | 'RNDC' => [ | |
ebd54ae9 | 421 | "BIND remote management protocol", |
857f62c8 DM |
422 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
423 | ], | |
424 | 'Razor' => [ | |
ebd54ae9 | 425 | "Razor Antispam System", |
857f62c8 DM |
426 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, |
427 | ], | |
428 | 'Rdate' => [ | |
ebd54ae9 | 429 | "Remote time retrieval (rdate)", |
857f62c8 DM |
430 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
431 | ], | |
432 | 'Rsync' => [ | |
ebd54ae9 | 433 | "Rsync server", |
857f62c8 DM |
434 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
435 | ], | |
436 | 'SANE' => [ | |
ebd54ae9 | 437 | "SANE network scanning", |
857f62c8 DM |
438 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
439 | ], | |
440 | 'SMB' => [ | |
ebd54ae9 | 441 | "Microsoft SMB traffic", |
857f62c8 DM |
442 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
443 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
444 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
445 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
446 | ], | |
857f62c8 | 447 | 'SMBswat' => [ |
ebd54ae9 | 448 | "Samba Web Administration Tool", |
857f62c8 DM |
449 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
450 | ], | |
451 | 'SMTP' => [ | |
ebd54ae9 | 452 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
453 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
454 | ], | |
455 | 'SMTPS' => [ | |
ebd54ae9 | 456 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
457 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
458 | ], | |
459 | 'SNMP' => [ | |
ebd54ae9 | 460 | "Simple Network Management Protocol", |
857f62c8 DM |
461 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
462 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
463 | ], | |
464 | 'SPAMD' => [ | |
ebd54ae9 | 465 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
466 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
467 | ], | |
468 | 'SSH' => [ | |
ebd54ae9 | 469 | "Secure shell traffic", |
857f62c8 DM |
470 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
471 | ], | |
472 | 'SVN' => [ | |
ebd54ae9 | 473 | "Subversion server (svnserve)", |
857f62c8 DM |
474 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
475 | ], | |
476 | 'SixXS' => [ | |
ebd54ae9 | 477 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
478 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
479 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
480 | { action => 'PARAM', proto => '41' }, | |
481 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
482 | ], | |
483 | 'Squid' => [ | |
ebd54ae9 | 484 | "Squid web proxy traffic", |
857f62c8 DM |
485 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
486 | ], | |
487 | 'Submission' => [ | |
ebd54ae9 | 488 | "Mail message submission traffic", |
857f62c8 DM |
489 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
490 | ], | |
491 | 'Syslog' => [ | |
ebd54ae9 | 492 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
493 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
494 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
495 | ], | |
496 | 'TFTP' => [ | |
ebd54ae9 | 497 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
498 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
499 | ], | |
500 | 'Telnet' => [ | |
ebd54ae9 | 501 | "Telnet traffic", |
857f62c8 DM |
502 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
503 | ], | |
504 | 'Telnets' => [ | |
ebd54ae9 | 505 | "Telnet over SSL", |
857f62c8 DM |
506 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
507 | ], | |
508 | 'Time' => [ | |
ebd54ae9 | 509 | "RFC 868 Time protocol", |
857f62c8 DM |
510 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
511 | ], | |
512 | 'Trcrt' => [ | |
ebd54ae9 | 513 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 514 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 515 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
516 | ], |
517 | 'VNC' => [ | |
93be4333 DM |
518 | "VNC traffic for VNC display's 0 - 99", |
519 | { action => 'PARAM', proto => 'tcp', dport => '5900:5999' }, | |
857f62c8 DM |
520 | ], |
521 | 'VNCL' => [ | |
ebd54ae9 | 522 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
523 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
524 | ], | |
525 | 'Web' => [ | |
ebd54ae9 | 526 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 527 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
528 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
529 | ], | |
857f62c8 | 530 | 'Webcache' => [ |
ebd54ae9 | 531 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
532 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
533 | ], | |
534 | 'Webmin' => [ | |
ebd54ae9 | 535 | "Webmin traffic", |
857f62c8 DM |
536 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
537 | ], | |
538 | 'Whois' => [ | |
ebd54ae9 | 539 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
540 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
541 | ], | |
961b4928 DM |
542 | }; |
543 | ||
544 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 545 | my $pve_fw_macro_descr; |
21a18e53 | 546 | my $pve_fw_macro_ipversion = {}; |
961b4928 | 547 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 548 | |
fe3d79b4 WB |
549 | my $FWACCEPTMARK_ON = "0x80000000/0x80000000"; |
550 | my $FWACCEPTMARK_OFF = "0x00000000/0x80000000"; | |
551 | ||
5547adf7 | 552 | my $pve_std_chains = {}; |
cfd7cd9c TW |
553 | my $pve_std_chains_conf = {}; |
554 | $pve_std_chains_conf->{4} = { | |
d8f2505e | 555 | 'PVEFW-SET-ACCEPT-MARK' => [ |
044409e5 | 556 | { target => "-j MARK --set-mark $FWACCEPTMARK_ON" }, |
d8f2505e | 557 | ], |
79929d9c DM |
558 | 'PVEFW-DropBroadcast' => [ |
559 | # same as shorewall 'Broadcast' | |
560 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
561 | # we can use this to reduce logging | |
562 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
563 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
564 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 565 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
566 | ], |
567 | 'PVEFW-reject' => [ | |
568 | # same as shorewall 'reject' | |
569 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 570 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c | 571 | { action => 'DROP', proto => 'icmp' }, |
044409e5 TW |
572 | { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' }, |
573 | { match => '-p udp', target => '-j REJECT --reject-with icmp-port-unreachable' }, | |
574 | { match => '-p icmp', target => '-j REJECT --reject-with icmp-host-unreachable' }, | |
575 | { target => '-j REJECT --reject-with icmp-host-prohibited' }, | |
79929d9c DM |
576 | ], |
577 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 578 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
579 | # but REJECT/DROP some packages to reduce logging, |
580 | # and ACCEPT critical ICMP types | |
581 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
582 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
583 | { action => 'PVEFW-DropBroadcast' }, | |
584 | # ACCEPT critical ICMP types | |
585 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
586 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
587 | # Drop packets with INVALID state | |
044409e5 | 588 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, |
79929d9c | 589 | # Drop Microsoft SMB noise |
e4882cff TW |
590 | { action => 'DROP', proto => 'udp', dport => '135,445' }, |
591 | { action => 'DROP', proto => 'udp', dport => '137:139' }, | |
79929d9c | 592 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, |
e4882cff | 593 | { action => 'DROP', proto => 'tcp', dport => '135,139,445' }, |
79929d9c DM |
594 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
595 | # Drop new/NotSyn traffic so that it doesn't get logged | |
044409e5 | 596 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, |
79929d9c DM |
597 | # Drop DNS replies |
598 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
599 | ], | |
600 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 601 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
602 | # but REJECT/DROP some packages to reduce logging, |
603 | # and ACCEPT critical ICMP types | |
604 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
605 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
606 | { action => 'PVEFW-DropBroadcast' }, | |
607 | # ACCEPT critical ICMP types | |
608 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
609 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
610 | # Drop packets with INVALID state | |
044409e5 | 611 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, |
79929d9c | 612 | # Drop Microsoft SMB noise |
e4882cff | 613 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' }, |
79929d9c DM |
614 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, |
615 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
e4882cff | 616 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' }, |
79929d9c DM |
617 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
618 | # Drop new/NotSyn traffic so that it doesn't get logged | |
044409e5 | 619 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, |
79929d9c DM |
620 | # Drop DNS replies |
621 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
622 | ], | |
d86659ef DM |
623 | 'PVEFW-tcpflags' => [ |
624 | # same as shorewall tcpflags action. | |
625 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
044409e5 TW |
626 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' }, |
627 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' }, | |
628 | { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' }, | |
629 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' }, | |
630 | { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' }, | |
d86659ef | 631 | ], |
bee633ab DM |
632 | 'PVEFW-smurfs' => [ |
633 | # same as shorewall smurfs action | |
634 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
044409e5 TW |
635 | { match => '-s 0.0.0.0/32', target => '-j RETURN' }, # allow DHCP |
636 | { match => '-m addrtype --src-type BROADCAST', target => '-g PVEFW-smurflog' }, | |
637 | { match => '-s 224.0.0.0/4', target => '-g PVEFW-smurflog' }, | |
638 | ], | |
639 | 'PVEFW-smurflog' => [ | |
640 | { action => 'DROP', logmsg => 'DROP: ' }, | |
641 | ], | |
642 | 'PVEFW-logflags' => [ | |
643 | { action => 'DROP', logmsg => 'DROP: ' }, | |
bee633ab | 644 | ], |
d8f2505e DM |
645 | }; |
646 | ||
cfd7cd9c | 647 | $pve_std_chains_conf->{6} = { |
47a79ff2 | 648 | 'PVEFW-SET-ACCEPT-MARK' => [ |
044409e5 | 649 | { target => "-j MARK --set-mark $FWACCEPTMARK_ON" }, |
47a79ff2 AD |
650 | ], |
651 | 'PVEFW-DropBroadcast' => [ | |
044409e5 TW |
652 | # same as shorewall 'Broadcast' |
653 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
654 | # we can use this to reduce logging | |
655 | #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6 | |
649cd835 DM |
656 | # ipv6 addrtype does not work with kernel 2.6.32 |
657 | #{ action => 'DROP', dsttype => 'MULTICAST' }, | |
044409e5 TW |
658 | #{ action => 'DROP', dsttype => 'ANYCAST' }, |
659 | { action => 'DROP', dest => 'ff00::/8' }, | |
660 | #{ action => 'DROP', dest => '224.0.0.0/4' }, | |
47a79ff2 AD |
661 | ], |
662 | 'PVEFW-reject' => [ | |
044409e5 TW |
663 | # same as shorewall 'reject' |
664 | #{ action => 'DROP', dsttype => 'BROADCAST' }, | |
665 | #{ action => 'DROP', source => '224.0.0.0/4' }, | |
649cd835 | 666 | { action => 'DROP', proto => 'icmpv6' }, |
044409e5 TW |
667 | { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' }, |
668 | #"-p udp -j REJECT --reject-with icmp-port-unreachable", | |
669 | #"-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
670 | #"-j REJECT --reject-with icmp-host-prohibited", | |
47a79ff2 AD |
671 | ], |
672 | 'PVEFW-Drop' => [ | |
044409e5 TW |
673 | # same as shorewall 'Drop', which is equal to DROP, |
674 | # but REJECT/DROP some packages to reduce logging, | |
675 | # and ACCEPT critical ICMP types | |
649cd835 | 676 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' |
044409e5 TW |
677 | # we are not interested in BROADCAST/MULTICAST/ANYCAST |
678 | { action => 'PVEFW-DropBroadcast' }, | |
679 | # ACCEPT critical ICMP types | |
680 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
681 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
682 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
683 | # Drop packets with INVALID state | |
684 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, | |
685 | # Drop Microsoft SMB noise | |
e4882cff | 686 | { action => 'DROP', proto => 'udp', dport => '135,445' }, |
649cd835 DM |
687 | { action => 'DROP', proto => 'udp', dport => '137:139'}, |
688 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
e4882cff | 689 | { action => 'DROP', proto => 'tcp', dport => '135,139,445' }, |
649cd835 | 690 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
044409e5 TW |
691 | # Drop new/NotSyn traffic so that it doesn't get logged |
692 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, | |
693 | # Drop DNS replies | |
649cd835 | 694 | { action => 'DROP', proto => 'udp', sport => 53 }, |
47a79ff2 AD |
695 | ], |
696 | 'PVEFW-Reject' => [ | |
044409e5 TW |
697 | # same as shorewall 'Reject', which is equal to Reject, |
698 | # but REJECT/DROP some packages to reduce logging, | |
699 | # and ACCEPT critical ICMP types | |
700 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
701 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
702 | { action => 'PVEFW-DropBroadcast' }, | |
703 | # ACCEPT critical ICMP types | |
704 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
705 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
706 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
707 | # Drop packets with INVALID state | |
708 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, | |
709 | # Drop Microsoft SMB noise | |
e4882cff TW |
710 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' }, |
711 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139' }, | |
044409e5 | 712 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, |
e4882cff | 713 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' }, |
044409e5 TW |
714 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
715 | # Drop new/NotSyn traffic so that it doesn't get logged | |
716 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, | |
717 | # Drop DNS replies | |
718 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
47a79ff2 AD |
719 | ], |
720 | 'PVEFW-tcpflags' => [ | |
044409e5 TW |
721 | # same as shorewall tcpflags action. |
722 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
723 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' }, | |
724 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' }, | |
725 | { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' }, | |
726 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' }, | |
727 | { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' }, | |
728 | ], | |
729 | 'PVEFW-logflags' => [ | |
730 | { action => 'DROP', logmsg => 'DROP: ' }, | |
47a79ff2 | 731 | ], |
47a79ff2 AD |
732 | }; |
733 | ||
4b586518 DM |
734 | # iptables -p icmp -h |
735 | my $icmp_type_names = { | |
736 | any => 1, | |
737 | 'echo-reply' => 1, | |
738 | 'destination-unreachable' => 1, | |
739 | 'network-unreachable' => 1, | |
740 | 'host-unreachable' => 1, | |
741 | 'protocol-unreachable' => 1, | |
742 | 'port-unreachable' => 1, | |
743 | 'fragmentation-needed' => 1, | |
744 | 'source-route-failed' => 1, | |
745 | 'network-unknown' => 1, | |
746 | 'host-unknown' => 1, | |
747 | 'network-prohibited' => 1, | |
748 | 'host-prohibited' => 1, | |
749 | 'TOS-network-unreachable' => 1, | |
750 | 'TOS-host-unreachable' => 1, | |
751 | 'communication-prohibited' => 1, | |
752 | 'host-precedence-violation' => 1, | |
753 | 'precedence-cutoff' => 1, | |
754 | 'source-quench' => 1, | |
755 | 'redirect' => 1, | |
756 | 'network-redirect' => 1, | |
757 | 'host-redirect' => 1, | |
758 | 'TOS-network-redirect' => 1, | |
759 | 'TOS-host-redirect' => 1, | |
760 | 'echo-request' => 1, | |
761 | 'router-advertisement' => 1, | |
762 | 'router-solicitation' => 1, | |
763 | 'time-exceeded' => 1, | |
764 | 'ttl-zero-during-transit' => 1, | |
765 | 'ttl-zero-during-reassembly' => 1, | |
766 | 'parameter-problem' => 1, | |
767 | 'ip-header-bad' => 1, | |
768 | 'required-option-missing' => 1, | |
769 | 'timestamp-request' => 1, | |
770 | 'timestamp-reply' => 1, | |
771 | 'address-mask-request' => 1, | |
772 | 'address-mask-reply' => 1, | |
773 | }; | |
774 | ||
041b9277 DM |
775 | # ip6tables -p icmpv6 -h |
776 | ||
777 | my $icmpv6_type_names = { | |
778 | 'any' => 1, | |
779 | 'destination-unreachable' => 1, | |
780 | 'no-route' => 1, | |
781 | 'communication-prohibited' => 1, | |
782 | 'address-unreachable' => 1, | |
783 | 'port-unreachable' => 1, | |
784 | 'packet-too-big' => 1, | |
785 | 'time-exceeded' => 1, | |
786 | 'ttl-zero-during-transit' => 1, | |
787 | 'ttl-zero-during-reassembly' => 1, | |
788 | 'parameter-problem' => 1, | |
789 | 'bad-header' => 1, | |
790 | 'unknown-header-type' => 1, | |
791 | 'unknown-option' => 1, | |
792 | 'echo-request' => 1, | |
793 | 'echo-reply' => 1, | |
794 | 'router-solicitation' => 1, | |
795 | 'router-advertisement' => 1, | |
593604cc | 796 | 'neighbor-solicitation' => 1, |
041b9277 | 797 | 'neighbour-solicitation' => 1, |
593604cc | 798 | 'neighbor-advertisement' => 1, |
041b9277 DM |
799 | 'neighbour-advertisement' => 1, |
800 | 'redirect' => 1, | |
801 | }; | |
802 | ||
54cd19a8 | 803 | sub init_firewall_macros { |
6158271d | 804 | |
961b4928 | 805 | $pve_fw_parsed_macros = {}; |
9aab3127 | 806 | |
21a18e53 WB |
807 | my $parse = sub { |
808 | my ($k, $macro) = @_; | |
e5076eee | 809 | my $lc_name = lc($k); |
21a18e53 WB |
810 | $pve_fw_macro_ipversion->{$k} = 0; |
811 | while (!ref($macro->[0])) { | |
812 | my $desc = shift @$macro; | |
813 | if ($desc eq 'ipv4only') { | |
814 | $pve_fw_macro_ipversion->{$k} = 4; | |
815 | } elsif ($desc eq 'ipv6only') { | |
816 | $pve_fw_macro_ipversion->{$k} = 6; | |
817 | } else { | |
818 | $pve_fw_macro_descr->{$k} = $desc; | |
819 | } | |
ebd54ae9 | 820 | } |
e5076eee DM |
821 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
822 | $pve_fw_parsed_macros->{$k} = $macro; | |
21a18e53 WB |
823 | }; |
824 | ||
825 | foreach my $k (keys %$pve_fw_macros) { | |
826 | &$parse($k, $pve_fw_macros->{$k}); | |
827 | } | |
828 | ||
829 | foreach my $k (keys %$pve_ipv6fw_macros) { | |
830 | next if $pve_fw_parsed_macros->{$k}; | |
831 | &$parse($k, $pve_ipv6fw_macros->{$k}); | |
832 | $pve_fw_macro_ipversion->{$k} = 6; | |
961b4928 | 833 | } |
9aab3127 DM |
834 | } |
835 | ||
54cd19a8 DM |
836 | init_firewall_macros(); |
837 | ||
ebd54ae9 DM |
838 | sub get_macros { |
839 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
840 | } | |
841 | ||
fcba0beb DM |
842 | my $etc_services; |
843 | ||
844 | sub get_etc_services { | |
845 | ||
846 | return $etc_services if $etc_services; | |
847 | ||
848 | my $filename = "/etc/services"; | |
849 | ||
850 | my $fh = IO::File->new($filename, O_RDONLY); | |
851 | if (!$fh) { | |
852 | warn "unable to read '$filename' - $!\n"; | |
853 | return {}; | |
854 | } | |
855 | ||
856 | my $services = {}; | |
857 | ||
858 | while (my $line = <$fh>) { | |
859 | chomp ($line); | |
860 | next if $line =~m/^#/; | |
861 | next if ($line =~m/^\s*$/); | |
862 | ||
d50f24ea | 863 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) { |
fcba0beb | 864 | $services->{byid}->{$2}->{name} = $1; |
35b66e9d | 865 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
866 | $services->{byid}->{$2}->{$3} = 1; |
867 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
868 | } | |
869 | } | |
870 | ||
871 | close($fh); | |
872 | ||
6158271d DM |
873 | $etc_services = $services; |
874 | ||
3a616aa0 | 875 | |
fcba0beb DM |
876 | return $etc_services; |
877 | } | |
878 | ||
58bc569d WB |
879 | sub parse_protocol_file { |
880 | my ($filename) = @_; | |
fcba0beb DM |
881 | |
882 | my $fh = IO::File->new($filename, O_RDONLY); | |
883 | if (!$fh) { | |
884 | warn "unable to read '$filename' - $!\n"; | |
885 | return {}; | |
886 | } | |
887 | ||
888 | my $protocols = {}; | |
889 | ||
890 | while (my $line = <$fh>) { | |
891 | chomp ($line); | |
892 | next if $line =~m/^#/; | |
893 | next if ($line =~m/^\s*$/); | |
894 | ||
d6dd6e96 | 895 | if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) { |
fcba0beb DM |
896 | $protocols->{byid}->{$2}->{name} = $1; |
897 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
898 | } | |
899 | } | |
900 | ||
901 | close($fh); | |
902 | ||
58bc569d WB |
903 | return $protocols; |
904 | } | |
905 | ||
906 | my $etc_protocols; | |
907 | ||
908 | sub get_etc_protocols { | |
909 | return $etc_protocols if $etc_protocols; | |
910 | ||
911 | my $protocols = parse_protocol_file('/etc/protocols'); | |
912 | ||
041b9277 DM |
913 | # add special case for ICMP v6 |
914 | $protocols->{byid}->{icmpv6}->{name} = "icmpv6"; | |
915 | $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6}; | |
916 | ||
fcba0beb DM |
917 | $etc_protocols = $protocols; |
918 | ||
919 | return $etc_protocols; | |
920 | } | |
921 | ||
b452ea10 WB |
922 | my $etc_ethertypes; |
923 | ||
924 | sub get_etc_ethertypes { | |
925 | $etc_ethertypes = parse_protocol_file('/etc/ethertypes') | |
926 | if !$etc_ethertypes; | |
927 | return $etc_ethertypes; | |
928 | } | |
929 | ||
525778d7 | 930 | my $__local_network; |
93be4333 | 931 | |
525778d7 | 932 | sub local_network { |
ac633d30 | 933 | my ($new_value) = @_; |
93be4333 | 934 | |
525778d7 | 935 | $__local_network = $new_value if defined($new_value); |
ac633d30 | 936 | |
525778d7 | 937 | return $__local_network if defined($__local_network); |
93be4333 DM |
938 | |
939 | eval { | |
940 | my $nodename = PVE::INotify::nodename(); | |
941 | ||
942 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
943 | ||
944 | my $testip = Net::IP->new($ip); | |
bfc488f6 | 945 | |
5dc356af WB |
946 | my $isv6 = $testip->version == 6; |
947 | my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route() | |
948 | : PVE::ProcFSTools::read_proc_net_route(); | |
93be4333 | 949 | foreach my $entry (@$routes) { |
5dc356af WB |
950 | my $mask; |
951 | if ($isv6) { | |
952 | $mask = $entry->{prefix}; | |
15c80000 | 953 | next if !$mask; # skip the default route... |
5dc356af | 954 | } else { |
2e1ae6b9 | 955 | $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}}; |
5dc356af WB |
956 | next if !defined($mask); |
957 | } | |
93be4333 DM |
958 | my $cidr = "$entry->{dest}/$mask"; |
959 | my $testnet = Net::IP->new($cidr); | |
15c80000 WB |
960 | my $overlap = $testnet->overlaps($testip); |
961 | if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP || | |
962 | $overlap == $Net::IP::IP_IDENTICAL) | |
963 | { | |
525778d7 | 964 | $__local_network = $cidr; |
93be4333 DM |
965 | return; |
966 | } | |
967 | } | |
968 | }; | |
969 | warn $@ if $@; | |
970 | ||
525778d7 | 971 | return $__local_network; |
93be4333 DM |
972 | } |
973 | ||
6d959e3f DM |
974 | # ipset names are limited to 31 characters, |
975 | # and we use '-v4' or '-v6' to indicate IP versions, | |
976 | # and we use '_swap' suffix for atomic update, | |
977 | # for example PVEFW-${VMID}-${ipset_name}_swap | |
30150dca | 978 | |
88c26d5e | 979 | my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap"); |
708ba714 DM |
980 | |
981 | sub compute_ipset_chain_name { | |
88c26d5e | 982 | my ($vmid, $ipset_name, $ipversion) = @_; |
708ba714 DM |
983 | |
984 | $vmid = 0 if !defined($vmid); | |
985 | ||
88c26d5e | 986 | my $id = "$vmid-${ipset_name}-v$ipversion"; |
708ba714 | 987 | |
88c26d5e | 988 | if (length($id) > $max_iptables_ipset_name_length) { |
708ba714 DM |
989 | $id = PVE::Tools::fnv31a_hex($id); |
990 | } | |
991 | ||
992 | return "PVEFW-$id"; | |
993 | } | |
994 | ||
b692f42c DM |
995 | sub compute_ipfilter_ipset_name { |
996 | my ($iface) = @_; | |
997 | ||
998 | return "ipfilter-$iface"; | |
999 | } | |
1000 | ||
ecbea048 DM |
1001 | sub parse_address_list { |
1002 | my ($str) = @_; | |
1003 | ||
e2c62733 DM |
1004 | if ($str =~ m/^(\+)(\S+)$/) { # ipset ref |
1005 | die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1); | |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | if ($str =~ m/^${ip_alias_pattern}$/) { | |
1010 | die "alias name too long\n" if length($str) > $max_alias_name_length; | |
1011 | return; | |
1012 | } | |
d72beb8e | 1013 | |
3162af6b DM |
1014 | my $count = 0; |
1015 | my $iprange = 0; | |
a589b6ac | 1016 | my $ipversion; |
7697c041 | 1017 | |
55b47371 WB |
1018 | my @elements = split(/,/, $str); |
1019 | die "extraneous commas in list\n" if $str ne join(',', @elements); | |
1020 | foreach my $elem (@elements) { | |
3162af6b | 1021 | $count++; |
c344e509 DM |
1022 | my $ip = Net::IP->new($elem); |
1023 | if (!$ip) { | |
ecbea048 DM |
1024 | my $err = Net::IP::Error(); |
1025 | die "invalid IP address: $err\n"; | |
1026 | } | |
3162af6b | 1027 | $iprange = 1 if $elem =~ m/-/; |
a589b6ac | 1028 | |
c344e509 | 1029 | my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4; |
a589b6ac DM |
1030 | |
1031 | die "detected mixed ipv4/ipv6 addresses in address list '$str'\n" | |
006490cb | 1032 | if $ipversion && ($new_ipversion != $ipversion); |
a589b6ac DM |
1033 | |
1034 | $ipversion = $new_ipversion; | |
ecbea048 | 1035 | } |
e34d0e58 | 1036 | |
5163367b | 1037 | die "you can't use a range in a list\n" if $iprange && $count > 1; |
a589b6ac | 1038 | |
7697c041 | 1039 | return $ipversion; |
ecbea048 | 1040 | } |
dddd9413 | 1041 | |
fcba0beb | 1042 | sub parse_port_name_number_or_range { |
a1c04f71 | 1043 | my ($str, $dport) = @_; |
fcba0beb DM |
1044 | |
1045 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 1046 | my $count = 0; |
041b7e8e DM |
1047 | my $icmp_port = 0; |
1048 | ||
55b47371 WB |
1049 | my @elements = split(/,/, $str); |
1050 | die "extraneous commas in list\n" if $str ne join(',', @elements); | |
1051 | foreach my $item (@elements) { | |
aced7e7d | 1052 | if ($item =~ m/^([0-9]+):([0-9]+)$/) { |
6a241ca7 | 1053 | $count += 2; |
7ca36671 DM |
1054 | my ($port1, $port2) = ($1, $2); |
1055 | die "invalid port '$port1'\n" if $port1 > 65535; | |
1056 | die "invalid port '$port2'\n" if $port2 > 65535; | |
12be0dfe | 1057 | die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2; |
aced7e7d | 1058 | } elsif ($item =~ m/^([0-9]+)$/) { |
6a241ca7 | 1059 | $count += 1; |
7ca36671 DM |
1060 | my $port = $1; |
1061 | die "invalid port '$port'\n" if $port > 65535; | |
1062 | } else { | |
a1c04f71 | 1063 | if ($dport && $icmp_type_names->{$item}) { |
041b7e8e | 1064 | $icmp_port = 1; |
a1c04f71 | 1065 | } elsif ($dport && $icmpv6_type_names->{$item}) { |
041b9277 | 1066 | $icmp_port = 1; |
041b7e8e | 1067 | } else { |
e34d0e58 | 1068 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; |
041b7e8e | 1069 | } |
fcba0beb DM |
1070 | } |
1071 | } | |
1072 | ||
6a241ca7 WB |
1073 | die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 0; |
1074 | ||
1075 | # I really don't like to use the word number here, but it's the only thing | |
1076 | # that makes sense in a literal way. The range 1:100 counts as 2, not as | |
1077 | # one and not as 100... | |
1078 | die "too many entries in port list (> 15 numbers)\n" | |
1079 | if $count > 15; | |
041b7e8e | 1080 | |
f776d6de | 1081 | return (scalar(@elements) > 1); |
fcba0beb DM |
1082 | } |
1083 | ||
a1c04f71 WB |
1084 | PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec); |
1085 | sub pve_fw_verify_sport_spec { | |
1086 | my ($portstr) = @_; | |
1087 | ||
1088 | parse_port_name_number_or_range($portstr, 0); | |
1089 | ||
1090 | return $portstr; | |
1091 | } | |
1092 | ||
1093 | PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec); | |
1094 | sub pve_fw_verify_dport_spec { | |
54cd19a8 DM |
1095 | my ($portstr) = @_; |
1096 | ||
a1c04f71 | 1097 | parse_port_name_number_or_range($portstr, 1); |
54cd19a8 DM |
1098 | |
1099 | return $portstr; | |
1100 | } | |
1101 | ||
d31689ee DM |
1102 | PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec); |
1103 | sub pve_fw_verify_addr_spec { | |
54cd19a8 DM |
1104 | my ($list) = @_; |
1105 | ||
1106 | parse_address_list($list); | |
1107 | ||
1108 | return $list; | |
1109 | } | |
1110 | ||
1111 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
1112 | sub pve_fw_verify_protocol_spec { | |
1113 | my ($proto) = @_; | |
1114 | ||
1115 | my $protocols = get_etc_protocols(); | |
1116 | ||
1117 | die "unknown protocol '$proto'\n" if $proto && | |
1118 | !(defined($protocols->{byname}->{$proto}) || | |
1119 | defined($protocols->{byid}->{$proto})); | |
1120 | ||
1121 | return $proto; | |
1122 | } | |
1123 | ||
1124 | ||
d1c53b3e | 1125 | # helper function for API |
d1c53b3e | 1126 | |
5d38d64f DM |
1127 | sub copy_opject_with_digest { |
1128 | my ($object) = @_; | |
1129 | ||
1130 | my $sha = Digest::SHA->new('sha1'); | |
1131 | ||
1132 | my $res = {}; | |
1133 | foreach my $k (sort keys %$object) { | |
1134 | my $v = $object->{$k}; | |
0365eb68 | 1135 | next if !defined($v); |
5d38d64f DM |
1136 | $res->{$k} = $v; |
1137 | $sha->add($k, ':', $v, "\n"); | |
1138 | } | |
1139 | ||
55e686c7 | 1140 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1141 | |
1142 | $res->{digest} = $digest; | |
1143 | ||
1144 | return wantarray ? ($res, $digest) : $res; | |
1145 | } | |
1146 | ||
1147 | sub copy_list_with_digest { | |
1148 | my ($list) = @_; | |
1149 | ||
1150 | my $sha = Digest::SHA->new('sha1'); | |
1151 | ||
1152 | my $res = []; | |
1153 | foreach my $entry (@$list) { | |
1154 | my $data = {}; | |
1155 | foreach my $k (sort keys %$entry) { | |
1156 | my $v = $entry->{$k}; | |
0365eb68 | 1157 | next if !defined($v); |
5d38d64f | 1158 | $data->{$k} = $v; |
6d9246e7 | 1159 | # Note: digest ignores refs ($rule->{errors}) |
e83f0d00 DC |
1160 | # since Digest::SHA expects a series of bytes, |
1161 | # we have to encode the value here to prevent errors when | |
1162 | # using utf8 characters (eg. in comments) | |
1163 | $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ; | |
5d38d64f DM |
1164 | } |
1165 | push @$res, $data; | |
1166 | } | |
1167 | ||
55e686c7 | 1168 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1169 | |
1170 | foreach my $entry (@$res) { | |
1171 | $entry->{digest} = $digest; | |
1172 | } | |
1173 | ||
1174 | return wantarray ? ($res, $digest) : $res; | |
1175 | } | |
1176 | ||
e313afe0 DM |
1177 | our $cluster_option_properties = { |
1178 | enable => { | |
1179 | description => "Enable or disable the firewall cluster wide.", | |
1180 | type => 'integer', | |
1181 | minimum => 0, | |
1182 | optional => 1, | |
1183 | }, | |
2549e7ef SI |
1184 | ebtables => { |
1185 | description => "Enable ebtables rules cluster wide.", | |
1186 | type => 'boolean', | |
1187 | default => 1, | |
1188 | optional => 1, | |
1189 | }, | |
e313afe0 DM |
1190 | policy_in => { |
1191 | description => "Input policy.", | |
1192 | type => 'string', | |
1193 | optional => 1, | |
1194 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1195 | }, | |
1196 | policy_out => { | |
1197 | description => "Output policy.", | |
1198 | type => 'string', | |
1199 | optional => 1, | |
1200 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1201 | }, | |
1202 | }; | |
1203 | ||
1204 | our $host_option_properties = { | |
1205 | enable => { | |
1206 | description => "Enable host firewall rules.", | |
1207 | type => 'boolean', | |
1208 | optional => 1, | |
1209 | }, | |
1210 | log_level_in => get_standard_option('pve-fw-loglevel', { | |
1211 | description => "Log level for incoming traffic." }), | |
1212 | log_level_out => get_standard_option('pve-fw-loglevel', { | |
1213 | description => "Log level for outgoing traffic." }), | |
1214 | tcp_flags_log_level => get_standard_option('pve-fw-loglevel', { | |
1215 | description => "Log level for illegal tcp flags filter." }), | |
1216 | smurf_log_level => get_standard_option('pve-fw-loglevel', { | |
1217 | description => "Log level for SMURFS filter." }), | |
1218 | nosmurfs => { | |
1219 | description => "Enable SMURFS filter.", | |
1220 | type => 'boolean', | |
1221 | optional => 1, | |
1222 | }, | |
1223 | tcpflags => { | |
1224 | description => "Filter illegal combinations of TCP flags.", | |
1225 | type => 'boolean', | |
1226 | optional => 1, | |
1227 | }, | |
1228 | nf_conntrack_max => { | |
1229 | description => "Maximum number of tracked connections.", | |
1230 | type => 'integer', | |
1231 | optional => 1, | |
1232 | minimum => 32768, | |
1233 | }, | |
1234 | nf_conntrack_tcp_timeout_established => { | |
1235 | description => "Conntrack established timeout.", | |
1236 | type => 'integer', | |
1237 | optional => 1, | |
1238 | minimum => 7875, | |
1239 | }, | |
1240 | ndp => { | |
1241 | description => "Enable NDP.", | |
1242 | type => 'boolean', | |
1243 | optional => 1, | |
1244 | }, | |
27c49e25 CE |
1245 | nf_conntrack_allow_invalid => { |
1246 | description => "Allow invalid packets on connection tracking.", | |
1247 | type => 'boolean', | |
1248 | default => 0, | |
1249 | optional => 1, | |
1250 | }, | |
e313afe0 DM |
1251 | }; |
1252 | ||
1253 | our $vm_option_properties = { | |
1254 | enable => { | |
1255 | description => "Enable/disable firewall rules.", | |
1256 | type => 'boolean', | |
1257 | optional => 1, | |
1258 | }, | |
1259 | macfilter => { | |
1260 | description => "Enable/disable MAC address filter.", | |
1261 | type => 'boolean', | |
1262 | optional => 1, | |
1263 | }, | |
1264 | dhcp => { | |
1265 | description => "Enable DHCP.", | |
1266 | type => 'boolean', | |
1267 | optional => 1, | |
1268 | }, | |
1269 | ndp => { | |
1270 | description => "Enable NDP.", | |
1271 | type => 'boolean', | |
1272 | optional => 1, | |
1273 | }, | |
1274 | radv => { | |
1275 | description => "Allow sending Router Advertisement.", | |
1276 | type => 'boolean', | |
1277 | optional => 1, | |
1278 | }, | |
1279 | ipfilter => { | |
1280 | description => "Enable default IP filters. " . | |
1281 | "This is equivalent to adding an empty ipfilter-net<id> ipset " . | |
1282 | "for every interface. Such ipsets implicitly contain sane default " . | |
1283 | "restrictions such as restricting IPv6 link local addresses to " . | |
1284 | "the one derived from the interface's MAC address. For containers " . | |
1285 | "the configured IP addresses will be implicitly added.", | |
1286 | type => 'boolean', | |
1287 | optional => 1, | |
1288 | }, | |
1289 | policy_in => { | |
1290 | description => "Input policy.", | |
1291 | type => 'string', | |
1292 | optional => 1, | |
1293 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1294 | }, | |
1295 | policy_out => { | |
1296 | description => "Output policy.", | |
1297 | type => 'string', | |
1298 | optional => 1, | |
1299 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1300 | }, | |
1301 | log_level_in => get_standard_option('pve-fw-loglevel', { | |
1302 | description => "Log level for incoming traffic." }), | |
1303 | log_level_out => get_standard_option('pve-fw-loglevel', { | |
1304 | description => "Log level for outgoing traffic." }), | |
1305 | ||
1306 | }; | |
1307 | ||
fb060a52 | 1308 | |
7a332151 | 1309 | my $addr_list_descr = "This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists."; |
fb060a52 | 1310 | |
7a332151 | 1311 | my $port_descr = "You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\\d+:\\d+', for example '80:85', and you can use comma separated list to match several ports or ranges."; |
fb060a52 | 1312 | |
9c7e0858 DM |
1313 | my $rule_properties = { |
1314 | pos => { | |
1315 | description => "Update rule at position <pos>.", | |
1316 | type => 'integer', | |
1317 | minimum => 0, | |
1318 | optional => 1, | |
1319 | }, | |
c71e785f | 1320 | digest => get_standard_option('pve-config-digest'), |
9c7e0858 | 1321 | type => { |
e50429af | 1322 | description => "Rule type.", |
9c7e0858 DM |
1323 | type => 'string', |
1324 | optional => 1, | |
1325 | enum => ['in', 'out', 'group'], | |
1326 | }, | |
1327 | action => { | |
c14dacdf | 1328 | description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.", |
9c7e0858 DM |
1329 | type => 'string', |
1330 | optional => 1, | |
44be8ceb | 1331 | pattern => $security_group_name_pattern, |
c14dacdf DM |
1332 | maxLength => 20, |
1333 | minLength => 2, | |
9c7e0858 | 1334 | }, |
e5076eee | 1335 | macro => { |
e50429af | 1336 | description => "Use predefined standard macro.", |
e5076eee DM |
1337 | type => 'string', |
1338 | optional => 1, | |
54cd19a8 | 1339 | maxLength => 128, |
e5076eee | 1340 | }, |
fb060a52 | 1341 | iface => get_standard_option('pve-iface', { |
7ccaa5f1 | 1342 | description => "Network interface name. You have to use network configuration key names for VMs and containers ('net\\d+'). Host related rules can use arbitrary strings.", |
fb060a52 DM |
1343 | optional => 1 |
1344 | }), | |
9c7e0858 | 1345 | source => { |
fb060a52 | 1346 | description => "Restrict packet source address. $addr_list_descr", |
d31689ee | 1347 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
1348 | optional => 1, |
1349 | }, | |
1350 | dest => { | |
fb060a52 | 1351 | description => "Restrict packet destination address. $addr_list_descr", |
d31689ee | 1352 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
1353 | optional => 1, |
1354 | }, | |
1355 | proto => { | |
fb060a52 | 1356 | description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.", |
54cd19a8 | 1357 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
1358 | optional => 1, |
1359 | }, | |
1360 | enable => { | |
e50429af | 1361 | description => "Flag to enable/disable a rule.", |
72d055fc AG |
1362 | type => 'integer', |
1363 | minimum => 0, | |
9c7e0858 DM |
1364 | optional => 1, |
1365 | }, | |
3489f8a2 CE |
1366 | log => get_standard_option('pve-fw-loglevel', { |
1367 | description => "Log level for firewall rule.", | |
1368 | }), | |
9c7e0858 | 1369 | sport => { |
fb060a52 | 1370 | description => "Restrict TCP/UDP source port. $port_descr", |
a1c04f71 | 1371 | type => 'string', format => 'pve-fw-sport-spec', |
9c7e0858 DM |
1372 | optional => 1, |
1373 | }, | |
1374 | dport => { | |
fb060a52 | 1375 | description => "Restrict TCP/UDP destination port. $port_descr", |
a1c04f71 | 1376 | type => 'string', format => 'pve-fw-dport-spec', |
9c7e0858 DM |
1377 | optional => 1, |
1378 | }, | |
1379 | comment => { | |
e50429af | 1380 | description => "Descriptive comment.", |
9c7e0858 DM |
1381 | type => 'string', |
1382 | optional => 1, | |
1383 | }, | |
1384 | }; | |
1385 | ||
1386 | sub add_rule_properties { | |
1387 | my ($properties) = @_; | |
1388 | ||
1389 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
1390 | my $h = $rule_properties->{$k}; |
1391 | # copy data, so that we can modify later without side effects | |
1392 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 1393 | } |
cbb5d6f3 | 1394 | |
9c7e0858 DM |
1395 | return $properties; |
1396 | } | |
1397 | ||
5b7974df DM |
1398 | sub delete_rule_properties { |
1399 | my ($rule, $delete_str) = @_; | |
e34d0e58 | 1400 | |
5b7974df DM |
1401 | foreach my $opt (PVE::Tools::split_list($delete_str)) { |
1402 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
1403 | if !defined($rule_properties->{$opt}); | |
1404 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
1405 | if $opt eq 'type' || $opt eq 'action'; | |
1406 | delete $rule->{$opt}; | |
1407 | } | |
1408 | ||
1409 | return $rule; | |
1410 | } | |
1411 | ||
9a2745a0 | 1412 | my $apply_macro = sub { |
35d1d6da | 1413 | my ($macro_name, $param, $verify, $ipversion) = @_; |
9a2745a0 DM |
1414 | |
1415 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1416 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1417 | ||
35d1d6da DM |
1418 | if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) { |
1419 | $macro_rules = $pve_ipv6fw_macros->{$macro_name}; | |
1420 | } | |
1421 | ||
21a18e53 | 1422 | # skip macros which are specific to another ipversion |
ff5d050e AG |
1423 | if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) { |
1424 | return if $ipversion != $required; | |
1425 | } | |
21a18e53 | 1426 | |
9a2745a0 DM |
1427 | my $rules = []; |
1428 | ||
1429 | foreach my $templ (@$macro_rules) { | |
1430 | my $rule = {}; | |
1431 | my $param_used = {}; | |
1432 | foreach my $k (keys %$templ) { | |
1433 | my $v = $templ->{$k}; | |
1434 | if ($v eq 'PARAM') { | |
1435 | $v = $param->{$k}; | |
1436 | $param_used->{$k} = 1; | |
1437 | } elsif ($v eq 'DEST') { | |
1438 | $v = $param->{dest}; | |
1439 | $param_used->{dest} = 1; | |
1440 | } elsif ($v eq 'SOURCE') { | |
1441 | $v = $param->{source}; | |
1442 | $param_used->{source} = 1; | |
1443 | } | |
1444 | ||
1445 | if (!defined($v)) { | |
1446 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
e34d0e58 | 1447 | raise_param_exc({ macro => $msg }) if $verify; |
9a2745a0 DM |
1448 | die "$msg\n"; |
1449 | } | |
1450 | $rule->{$k} = $v; | |
1451 | } | |
1452 | foreach my $k (keys %$param) { | |
1453 | next if $k eq 'macro'; | |
1454 | next if !defined($param->{$k}); | |
1455 | next if $param_used->{$k}; | |
1456 | if (defined($rule->{$k})) { | |
1457 | if ($rule->{$k} ne $param->{$k}) { | |
1458 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
e34d0e58 | 1459 | raise_param_exc({ $k => $msg }) if $verify; |
9a2745a0 DM |
1460 | die "$msg\n"; |
1461 | } | |
1462 | } else { | |
1463 | $rule->{$k} = $param->{$k}; | |
1464 | } | |
1465 | } | |
1466 | push @$rules, $rule; | |
1467 | } | |
1468 | ||
1469 | return $rules; | |
1470 | }; | |
1471 | ||
b6b8e6ad DM |
1472 | my $rule_env_iface_lookup = { |
1473 | 'ct' => 1, | |
1474 | 'vm' => 1, | |
1475 | 'group' => 0, | |
1476 | 'cluster' => 1, | |
1477 | 'host' => 1, | |
1478 | }; | |
1479 | ||
7ca36671 | 1480 | sub verify_rule { |
a523e057 | 1481 | my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_; |
b6b8e6ad DM |
1482 | |
1483 | my $allow_groups = $rule_env eq 'group' ? 0 : 1; | |
bfc488f6 | 1484 | |
b6b8e6ad DM |
1485 | my $allow_iface = $rule_env_iface_lookup->{$rule_env}; |
1486 | die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen | |
7ca36671 | 1487 | |
a523e057 DM |
1488 | my $errors = $rule->{errors} || {}; |
1489 | ||
6d9246e7 | 1490 | my $error_count = 0; |
7ca36671 | 1491 | |
6d9246e7 DM |
1492 | my $add_error = sub { |
1493 | my ($param, $msg) = @_; | |
d4cda423 | 1494 | chomp $msg; |
6d9246e7 DM |
1495 | raise_param_exc({ $param => $msg }) if !$noerr; |
1496 | $error_count++; | |
1497 | $errors->{$param} = $msg if !$errors->{$param}; | |
1498 | }; | |
1499 | ||
eea9d2a1 DM |
1500 | my $ipversion; |
1501 | my $set_ip_version = sub { | |
1502 | my $vers = shift; | |
1503 | if ($vers) { | |
1504 | die "detected mixed ipv4/ipv6 adresses in rule\n" | |
1505 | if $ipversion && ($vers != $ipversion); | |
1506 | $ipversion = $vers; | |
1507 | } | |
1508 | }; | |
1509 | ||
a523e057 | 1510 | my $check_ipset_or_alias_property = sub { |
ae029a88 | 1511 | my ($name, $expected_ipversion) = @_; |
a523e057 DM |
1512 | |
1513 | if (my $value = $rule->{$name}) { | |
1514 | if ($value =~ m/^\+/) { | |
4dfe04e6 | 1515 | if ($value =~ m/^\+(${ipset_name_pattern})$/) { |
bfc488f6 | 1516 | &$add_error($name, "no such ipset '$1'") |
a523e057 | 1517 | if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1})); |
bfc488f6 | 1518 | |
a523e057 | 1519 | } else { |
351052d1 | 1520 | &$add_error($name, "invalid ipset name '$value'"); |
a523e057 DM |
1521 | } |
1522 | } elsif ($value =~ m/^${ip_alias_pattern}$/){ | |
1523 | my $alias = lc($value); | |
bfc488f6 | 1524 | &$add_error($name, "no such alias '$value'") |
70e524eb | 1525 | if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias})); |
04f5088f | 1526 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
70e524eb AD |
1527 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1528 | ||
eea9d2a1 | 1529 | &$set_ip_version($e->{ipversion}); |
a523e057 DM |
1530 | } |
1531 | } | |
1532 | }; | |
1533 | ||
6d9246e7 DM |
1534 | my $type = $rule->{type}; |
1535 | my $action = $rule->{action}; | |
bfc488f6 | 1536 | |
6d9246e7 DM |
1537 | &$add_error('type', "missing property") if !$type; |
1538 | &$add_error('action', "missing property") if !$action; | |
1539 | ||
1540 | if ($type) { | |
1541 | if ($type eq 'in' || $type eq 'out') { | |
1542 | &$add_error('action', "unknown action '$action'") | |
1543 | if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/); | |
1544 | } elsif ($type eq 'group') { | |
1545 | &$add_error('type', "security groups not allowed") | |
1546 | if !$allow_groups; | |
1547 | &$add_error('action', "invalid characters in security group name") | |
1548 | if $action && ($action !~ m/^${security_group_name_pattern}$/); | |
1549 | } else { | |
1550 | &$add_error('type', "unknown rule type '$type'"); | |
1551 | } | |
7ca36671 | 1552 | } |
e34d0e58 | 1553 | |
dba740a9 | 1554 | if ($rule->{iface}) { |
bfc488f6 | 1555 | &$add_error('type', "parameter -i not allowed for this rule type") |
b6b8e6ad | 1556 | if !$allow_iface; |
dba740a9 | 1557 | eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); }; |
6d9246e7 | 1558 | &$add_error('iface', $@) if $@; |
fdefeeab | 1559 | if ($rule_env eq 'vm' || $rule_env eq 'ct') { |
b6b8e6ad DM |
1560 | &$add_error('iface', "value does not match the regex pattern 'net\\d+'") |
1561 | if $rule->{iface} !~ m/^net(\d+)$/; | |
b6b8e6ad DM |
1562 | } |
1563 | } | |
7ca36671 DM |
1564 | |
1565 | if ($rule->{macro}) { | |
6d9246e7 DM |
1566 | if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) { |
1567 | $rule->{macro} = $preferred_name; | |
1568 | } else { | |
1569 | &$add_error('macro', "unknown macro '$rule->{macro}'"); | |
1570 | } | |
1571 | } | |
1572 | ||
1573 | if ($rule->{proto}) { | |
1574 | eval { pve_fw_verify_protocol_spec($rule->{proto}); }; | |
1575 | &$add_error('proto', $@) if $@; | |
041b9277 DM |
1576 | &$set_ip_version(4) if $rule->{proto} eq 'icmp'; |
1577 | &$set_ip_version(6) if $rule->{proto} eq 'icmpv6'; | |
6d9246e7 | 1578 | } |
7ca36671 DM |
1579 | |
1580 | if ($rule->{dport}) { | |
a1c04f71 | 1581 | eval { parse_port_name_number_or_range($rule->{dport}, 1); }; |
6d9246e7 | 1582 | &$add_error('dport', $@) if $@; |
48e3963e | 1583 | my $proto = $rule->{proto}; |
6d9246e7 | 1584 | &$add_error('proto', "missing property - 'dport' requires this property") |
48e3963e WB |
1585 | if !$proto; |
1586 | &$add_error('dport', "protocol '$proto' does not support ports") | |
1587 | if !$PROTOCOLS_WITH_PORTS->{$proto} && | |
1588 | $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases | |
6d9246e7 | 1589 | } |
7ca36671 DM |
1590 | |
1591 | if ($rule->{sport}) { | |
a1c04f71 | 1592 | eval { parse_port_name_number_or_range($rule->{sport}, 0); }; |
6d9246e7 | 1593 | &$add_error('sport', $@) if $@; |
48e3963e | 1594 | my $proto = $rule->{proto}; |
6d9246e7 | 1595 | &$add_error('proto', "missing property - 'sport' requires this property") |
48e3963e WB |
1596 | if !$proto; |
1597 | &$add_error('sport', "protocol '$proto' does not support ports") | |
1598 | if !$PROTOCOLS_WITH_PORTS->{$proto}; | |
7ca36671 DM |
1599 | } |
1600 | ||
1601 | if ($rule->{source}) { | |
041b9277 DM |
1602 | eval { |
1603 | my $source_ipversion = parse_address_list($rule->{source}); | |
1604 | &$set_ip_version($source_ipversion); | |
1605 | }; | |
6d9246e7 | 1606 | &$add_error('source', $@) if $@; |
ae029a88 | 1607 | &$check_ipset_or_alias_property('source', $ipversion); |
7ca36671 DM |
1608 | } |
1609 | ||
1610 | if ($rule->{dest}) { | |
9e2205e5 DM |
1611 | eval { |
1612 | my $dest_ipversion = parse_address_list($rule->{dest}); | |
041b9277 | 1613 | &$set_ip_version($dest_ipversion); |
9e2205e5 | 1614 | }; |
6d9246e7 | 1615 | &$add_error('dest', $@) if $@; |
ae029a88 | 1616 | &$check_ipset_or_alias_property('dest', $ipversion); |
7ca36671 DM |
1617 | } |
1618 | ||
35d1d6da DM |
1619 | $rule->{ipversion} = $ipversion if $ipversion; |
1620 | ||
a523e057 | 1621 | if ($rule->{macro} && !$error_count) { |
35d1d6da | 1622 | eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); }; |
6d9246e7 DM |
1623 | if (my $err = $@) { |
1624 | if (ref($err) eq "PVE::Exception" && $err->{errors}) { | |
1625 | my $eh = $err->{errors}; | |
1626 | foreach my $p (keys %$eh) { | |
1627 | &$add_error($p, $eh->{$p}); | |
1628 | } | |
1629 | } else { | |
1630 | &$add_error('macro', "$err"); | |
1631 | } | |
1632 | } | |
9a2745a0 DM |
1633 | } |
1634 | ||
6d9246e7 DM |
1635 | $rule->{errors} = $errors if $error_count; |
1636 | ||
7ca36671 DM |
1637 | return $rule; |
1638 | } | |
1639 | ||
9c7e0858 DM |
1640 | sub copy_rule_data { |
1641 | my ($rule, $param) = @_; | |
1642 | ||
1643 | foreach my $k (keys %$rule_properties) { | |
1644 | if (defined(my $v = $param->{$k})) { | |
1645 | if ($v eq '' || $v eq '-') { | |
1646 | delete $rule->{$k}; | |
1647 | } else { | |
1648 | $rule->{$k} = $v; | |
1649 | } | |
9c7e0858 DM |
1650 | } |
1651 | } | |
7ca36671 | 1652 | |
9c7e0858 DM |
1653 | return $rule; |
1654 | } | |
1655 | ||
9f6845cf DM |
1656 | sub rules_modify_permissions { |
1657 | my ($rule_env) = @_; | |
1658 | ||
1659 | if ($rule_env eq 'host') { | |
1660 | return { | |
1661 | check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]], | |
1662 | }; | |
1663 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1664 | return { | |
1665 | check => ['perm', '/', [ 'Sys.Modify' ]], | |
1666 | }; | |
3b4882dc | 1667 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1668 | return { |
1669 | check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]], | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | return undef; | |
1674 | } | |
1675 | ||
1676 | sub rules_audit_permissions { | |
1677 | my ($rule_env) = @_; | |
1678 | ||
1679 | if ($rule_env eq 'host') { | |
1680 | return { | |
1681 | check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]], | |
1682 | }; | |
1683 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1684 | return { | |
1685 | check => ['perm', '/', [ 'Sys.Audit' ]], | |
1686 | }; | |
3b4882dc | 1687 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1688 | return { |
1689 | check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]], | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return undef; | |
1694 | } | |
1695 | ||
9c7e0858 | 1696 | # core functions |
780bcc0f DM |
1697 | my $bridge_firewall_enabled = 0; |
1698 | ||
1699 | sub enable_bridge_firewall { | |
1700 | ||
1701 | return if $bridge_firewall_enabled; # only once | |
1702 | ||
5f0a912c DM |
1703 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
1704 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 1705 | |
6a8a75db DM |
1706 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
1707 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
1708 | ||
780bcc0f DM |
1709 | $bridge_firewall_enabled = 1; |
1710 | } | |
1711 | ||
b16e818e DM |
1712 | sub iptables_restore_cmdlist { |
1713 | my ($cmdlist) = @_; | |
3a616aa0 | 1714 | |
59f9b456 | 1715 | run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist"); |
3a616aa0 AD |
1716 | } |
1717 | ||
17da5c0f AD |
1718 | sub ip6tables_restore_cmdlist { |
1719 | my ($cmdlist) = @_; | |
1720 | ||
59f9b456 | 1721 | run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist"); |
17da5c0f AD |
1722 | } |
1723 | ||
34cdedfa AD |
1724 | sub ipset_restore_cmdlist { |
1725 | my ($cmdlist) = @_; | |
1726 | ||
ff5363da | 1727 | run_command("/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist"); |
34cdedfa AD |
1728 | } |
1729 | ||
151c209e AD |
1730 | sub ebtables_restore_cmdlist { |
1731 | my ($cmdlist) = @_; | |
1732 | ||
1733 | run_command("/sbin/ebtables-restore", input => $cmdlist, errmsg => "ebtables_restore_cmdlist"); | |
1734 | } | |
1735 | ||
de2a57cd | 1736 | sub iptables_get_chains { |
17da5c0f AD |
1737 | my ($iptablescmd) = @_; |
1738 | ||
1739 | $iptablescmd = "iptables" if !$iptablescmd; | |
de2a57cd DM |
1740 | |
1741 | my $res = {}; | |
1742 | ||
1743 | # check what chains we want to track | |
1744 | my $is_pvefw_chain = sub { | |
1745 | my $name = shift; | |
1746 | ||
dec84fcd DM |
1747 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1748 | ||
a3ded5cd | 1749 | return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1750 | |
a3ded5cd | 1751 | return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1752 | |
a3ded5cd | 1753 | return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/; |
a89dfcc6 | 1754 | return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/; |
de2a57cd DM |
1755 | |
1756 | return undef; | |
1757 | }; | |
1758 | ||
1759 | my $table = ''; | |
1760 | ||
c4a2e5ae DM |
1761 | my $hooks = {}; |
1762 | ||
de2a57cd DM |
1763 | my $parser = sub { |
1764 | my $line = shift; | |
1765 | ||
1766 | return if $line =~ m/^#/; | |
1767 | return if $line =~ m/^\s*$/; | |
1768 | ||
1769 | if ($line =~ m/^\*(\S+)$/) { | |
1770 | $table = $1; | |
1771 | return; | |
1772 | } | |
1773 | ||
1774 | return if $table ne 'filter'; | |
1775 | ||
1776 | if ($line =~ m/^:(\S+)\s/) { | |
1777 | my $chain = $1; | |
1778 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1779 | $res->{$chain} = "unknown"; |
09d5f68e | 1780 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1781 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1782 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1783 | $res->{$chain} = $sig; |
c4a2e5ae DM |
1784 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
1785 | $hooks->{$1} = 1; | |
de2a57cd DM |
1786 | } else { |
1787 | # simply ignore the rest | |
1788 | return; | |
1789 | } | |
1790 | }; | |
1791 | ||
17da5c0f | 1792 | run_command("/sbin/$iptablescmd-save", outfunc => $parser); |
de2a57cd | 1793 | |
c4a2e5ae | 1794 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1795 | } |
1796 | ||
9bf7d929 DM |
1797 | sub iptables_chain_digest { |
1798 | my ($rules) = @_; | |
1799 | my $digest = Digest::SHA->new('sha1'); | |
1800 | foreach my $rule (@$rules) { # order is important | |
1801 | $digest->add($rule); | |
1802 | } | |
1803 | return $digest->b64digest; | |
1804 | } | |
1805 | ||
3f95d14a DM |
1806 | sub ipset_chain_digest { |
1807 | my ($rules) = @_; | |
4bd0a9c4 | 1808 | |
3f95d14a DM |
1809 | my $digest = Digest::SHA->new('sha1'); |
1810 | foreach my $rule (sort @$rules) { # note: sorted | |
1811 | $digest->add($rule); | |
1812 | } | |
1813 | return $digest->b64digest; | |
1814 | } | |
1815 | ||
34cdedfa AD |
1816 | sub ipset_get_chains { |
1817 | ||
1818 | my $res = {}; | |
1819 | my $chains = {}; | |
1820 | ||
1821 | my $parser = sub { | |
1822 | my $line = shift; | |
1823 | ||
1824 | return if $line =~ m/^#/; | |
1825 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1826 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1827 | my $chain = $1; |
1828 | $line =~ s/\s+$//; # delete trailing white space | |
1829 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1830 | } else { |
1831 | # simply ignore the rest | |
1832 | return; | |
1833 | } | |
1834 | }; | |
1835 | ||
ff5363da | 1836 | run_command("/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1837 | |
3f95d14a DM |
1838 | # compute digest for each chain |
1839 | foreach my $chain (keys %$chains) { | |
1840 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1841 | } |
1842 | ||
1843 | return $res; | |
1844 | } | |
1845 | ||
151c209e AD |
1846 | sub ebtables_get_chains { |
1847 | ||
1848 | my $res = {}; | |
1849 | my $chains = {}; | |
151c209e AD |
1850 | my $parser = sub { |
1851 | my $line = shift; | |
1852 | return if $line =~ m/^#/; | |
1853 | return if $line =~ m/^\s*$/; | |
fc1f1de9 WB |
1854 | if ($line =~ m/^:(\S+)\s\S+$/) { |
1855 | # Make sure we know chains exist even if they're empty. | |
1856 | $chains->{$1} //= []; | |
84025e99 | 1857 | } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) { |
151c209e AD |
1858 | my $chain = $1; |
1859 | $line =~ s/\s+$//; | |
1860 | push @{$chains->{$chain}}, $line; | |
1861 | } else { | |
1862 | # simply ignore the rest | |
1863 | return; | |
1864 | } | |
1865 | }; | |
1866 | ||
1867 | run_command("/sbin/ebtables-save", outfunc => $parser); | |
84025e99 | 1868 | # compute digest for each chain and store rules as well |
151c209e | 1869 | foreach my $chain (keys %$chains) { |
84025e99 SI |
1870 | $res->{$chain}->{rules} = $chains->{$chain}; |
1871 | $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain}); | |
151c209e AD |
1872 | } |
1873 | return $res; | |
1874 | } | |
1875 | ||
180da76c TW |
1876 | # substitude action of rule according to action hash |
1877 | sub rule_substitude_action { | |
1878 | my ($rule, $actions) = @_; | |
1879 | ||
1880 | if (my $action = $rule->{action}) { | |
1881 | $rule->{action} = $actions->{$action} if defined($actions->{$action}); | |
1882 | } | |
1883 | } | |
1884 | ||
a44cb745 TW |
1885 | # generate a src or dst match |
1886 | # $dir(ection) is either d or s | |
1887 | sub ipt_gen_src_or_dst_match { | |
1888 | my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_; | |
1889 | ||
1890 | my $srcdst; | |
1891 | if ($dir eq 's') { | |
1892 | $srcdst = "src"; | |
1893 | } elsif ($dir eq 'd') { | |
1894 | $srcdst = "dst"; | |
1895 | } else { | |
1896 | die "ipt_gen_src_or_dst_match: invalid direction $dir \n"; | |
1897 | } | |
1898 | ||
1899 | my $match; | |
1900 | if ($adr =~ m/^\+/) { | |
1901 | if ($adr =~ m/^\+(${ipset_name_pattern})$/) { | |
1902 | my $name = $1; | |
1903 | my $ipset_chain; | |
1904 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
1905 | $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion); | |
1906 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { | |
1907 | $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion); | |
1908 | } else { | |
1909 | die "no such ipset '$name'\n"; | |
1910 | } | |
1911 | $match = "-m set --match-set ${ipset_chain} ${srcdst}"; | |
1912 | } else { | |
1913 | die "invalid security group name '$adr'\n"; | |
1914 | } | |
1915 | } elsif ($adr =~ m/^${ip_alias_pattern}$/){ | |
1916 | my $alias = lc($adr); | |
1917 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; | |
1918 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; | |
1919 | die "no such alias '$adr'\n" if !$e; | |
1920 | $match = "-${dir} $e->{cidr}"; | |
1921 | } elsif ($adr =~ m/\-/){ | |
1922 | $match = "-m iprange --${srcdst}-range $adr"; | |
1923 | } else { | |
1924 | $match = "-${dir} $adr"; | |
1925 | } | |
1926 | ||
1927 | return $match; | |
1928 | } | |
1929 | ||
30c390f9 TW |
1930 | # convert a %rule to an array of iptables commands |
1931 | sub ipt_rule_to_cmds { | |
1932 | my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_; | |
1933 | ||
1934 | die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen | |
1935 | ||
1936 | my @match = (); | |
1937 | ||
1938 | if (defined $rule->{match}) { | |
1939 | push @match, $rule->{match}; | |
1940 | } else { | |
1941 | push @match, "-i $rule->{iface_in}" if $rule->{iface_in}; | |
1942 | push @match, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1943 | ||
1944 | if ($rule->{source}) { | |
1945 | push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf); | |
1946 | } | |
1947 | if ($rule->{dest}) { | |
1948 | push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf); | |
1949 | } | |
1950 | ||
1951 | if (my $proto = $rule->{proto}) { | |
1952 | push @match, "-p $proto"; | |
1953 | ||
f776d6de WB |
1954 | my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1); |
1955 | my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0); | |
30c390f9 | 1956 | |
f776d6de WB |
1957 | my $add_dport = sub { |
1958 | return if !$rule->{dport}; | |
3dffed4c | 1959 | |
30c390f9 TW |
1960 | if ($proto eq 'icmp') { |
1961 | # Note: we use dport to store --icmp-type | |
1962 | die "unknown icmp-type '$rule->{dport}'\n" | |
1963 | if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}}); | |
1964 | push @match, "-m icmp --icmp-type $rule->{dport}"; | |
1965 | } elsif ($proto eq 'icmpv6') { | |
1966 | # Note: we use dport to store --icmpv6-type | |
1967 | die "unknown icmpv6-type '$rule->{dport}'\n" | |
1968 | if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}}); | |
1969 | push @match, "-m icmpv6 --icmpv6-type $rule->{dport}"; | |
1970 | } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) { | |
1971 | die "protocol $proto does not have ports\n"; | |
f776d6de WB |
1972 | } elsif ($multidport) { |
1973 | push @match, "--match multiport", "--dports $rule->{dport}"; | |
30c390f9 | 1974 | } else { |
f776d6de | 1975 | push @match, "--dport $rule->{dport}"; |
30c390f9 | 1976 | } |
f776d6de | 1977 | }; |
30c390f9 | 1978 | |
f776d6de WB |
1979 | my $add_sport = sub { |
1980 | return if !$rule->{sport}; | |
3dffed4c | 1981 | |
30c390f9 TW |
1982 | die "protocol $proto does not have ports\n" |
1983 | if !$PROTOCOLS_WITH_PORTS->{$proto}; | |
f776d6de WB |
1984 | if ($multisport) { |
1985 | push @match, "--match multiport", "--sports $rule->{sport}"; | |
30c390f9 TW |
1986 | } else { |
1987 | push @match, "--sport $rule->{sport}"; | |
1988 | } | |
f776d6de WB |
1989 | }; |
1990 | ||
3dffed4c | 1991 | # order matters - single port before multiport! |
f776d6de WB |
1992 | $add_dport->() if $multisport; |
1993 | $add_sport->(); | |
1994 | $add_dport->() if !$multisport; | |
30c390f9 TW |
1995 | } elsif ($rule->{dport} || $rule->{sport}) { |
1996 | die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport}; | |
1997 | die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport}; | |
1998 | } | |
1999 | ||
2000 | push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; | |
2001 | } | |
2002 | my $matchstr = scalar(@match) ? join(' ', @match) : ""; | |
2003 | ||
2004 | my $targetstr; | |
2005 | if (defined $rule->{target}) { | |
2006 | $targetstr = $rule->{target}; | |
2007 | } else { | |
2008 | my $action = (defined $rule->{action}) ? $rule->{action} : ""; | |
2009 | my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK'; | |
2010 | $targetstr = ($goto) ? "-g $action" : "-j $action"; | |
2011 | } | |
2012 | ||
2013 | my @iptcmds; | |
3489f8a2 CE |
2014 | if ($rule->{log} && $rule->{log} ne 'nolog') { |
2015 | my $log = $rule->{log}; | |
2016 | my $loglevel = $log_level_hash->{$log}; | |
2017 | my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel); | |
30c390f9 TW |
2018 | push @iptcmds, "-A $chain $matchstr $logaction"; |
2019 | } | |
2020 | push @iptcmds, "-A $chain $matchstr $targetstr"; | |
2021 | return @iptcmds; | |
2022 | } | |
2023 | ||
eba0fb64 | 2024 | sub ruleset_generate_rule { |
3489f8a2 | 2025 | my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_; |
eba0fb64 | 2026 | |
e5076eee DM |
2027 | my $rules; |
2028 | ||
2029 | if ($rule->{macro}) { | |
35d1d6da | 2030 | $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion); |
e5076eee DM |
2031 | } else { |
2032 | $rules = [ $rule ]; | |
2033 | } | |
2034 | ||
30c390f9 TW |
2035 | # update all or nothing |
2036 | my @ipt_rule_cmds; | |
2037 | foreach my $r (@$rules) { | |
3489f8a2 | 2038 | push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid); |
30c390f9 TW |
2039 | } |
2040 | foreach my $c (@ipt_rule_cmds) { | |
2041 | ruleset_add_ipt_cmd($ruleset, $chain, $c); | |
2042 | } | |
2043 | } | |
2044 | ||
3fa83edf DM |
2045 | sub ruleset_create_chain { |
2046 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 2047 | |
d050c724 | 2048 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 2049 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 2050 | |
3fa83edf DM |
2051 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
2052 | ||
2053 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
2054 | } |
2055 | ||
3fa83edf DM |
2056 | sub ruleset_chain_exist { |
2057 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 2058 | |
3fa83edf DM |
2059 | return $ruleset->{$chain} ? 1 : undef; |
2060 | } | |
3a616aa0 | 2061 | |
30c390f9 TW |
2062 | # add an iptables command (like generated by ipt_rule_to_cmds) to a chain |
2063 | sub ruleset_add_ipt_cmd { | |
2064 | my ($ruleset, $chain, $iptcmd) = @_; | |
2065 | ||
2066 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; | |
2067 | ||
2068 | push @{$ruleset->{$chain}}, $iptcmd; | |
2069 | } | |
2070 | ||
1e9c5070 | 2071 | sub ruleset_addrule { |
3489f8a2 | 2072 | my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_; |
1e9c5070 | 2073 | |
3489f8a2 | 2074 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
1e9c5070 | 2075 | |
3489f8a2 CE |
2076 | if ($log) { |
2077 | my $loglevel = $log_level_hash->{$log}; | |
2078 | my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel); | |
7f7930f8 | 2079 | push @{$ruleset->{$chain}}, "-A $chain $match $logaction"; |
3489f8a2 CE |
2080 | } |
2081 | # for stable ebtables digests avoid double-spaces to match ebtables-save output | |
2082 | $match .= ' ' if length($match); | |
2083 | push @{$ruleset->{$chain}}, "-A $chain ${match}$action"; | |
1e9c5070 TW |
2084 | } |
2085 | ||
3fa83edf | 2086 | sub ruleset_insertrule { |
1e9c5070 | 2087 | my ($ruleset, $chain, $match, $action, $log) = @_; |
3a616aa0 | 2088 | |
3fa83edf | 2089 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 2090 | |
1e9c5070 | 2091 | unshift @{$ruleset->{$chain}}, "-A $chain $match $action"; |
3fa83edf | 2092 | } |
3a616aa0 | 2093 | |
782c4cde DM |
2094 | sub get_log_rule_base { |
2095 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 2096 | |
782c4cde | 2097 | $vmid = 0 if !defined($vmid); |
7f7930f8 | 2098 | $msg = "" if !defined($msg); |
782c4cde | 2099 | |
cbb5d6f3 | 2100 | # Note: we use special format for prefix to pass further |
7f7930f8 | 2101 | # info to log daemon (VMID, LOGLEVEL and CHAIN) |
782c4cde | 2102 | |
3489f8a2 | 2103 | return "-m limit --limit 1/sec --limit-burst 1 -j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; |
782c4cde DM |
2104 | } |
2105 | ||
ead850e8 | 2106 | sub ruleset_add_chain_policy { |
88c26d5e | 2107 | my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
2108 | |
2109 | if ($policy eq 'ACCEPT') { | |
2110 | ||
180da76c TW |
2111 | my $rule = { action => 'ACCEPT' }; |
2112 | rule_substitude_action($rule, { ACCEPT => $accept_action}); | |
2113 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule); | |
ead850e8 DM |
2114 | |
2115 | } elsif ($policy eq 'DROP') { | |
2116 | ||
1e9c5070 | 2117 | ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop"); |
ead850e8 | 2118 | |
7f7930f8 | 2119 | ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid); |
ead850e8 | 2120 | } elsif ($policy eq 'REJECT') { |
1e9c5070 | 2121 | ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject"); |
ead850e8 | 2122 | |
d8d4dd67 | 2123 | ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid); |
ead850e8 DM |
2124 | } else { |
2125 | # should not happen | |
2126 | die "internal error: unknown policy '$policy'"; | |
2127 | } | |
2128 | } | |
2129 | ||
a83abe93 | 2130 | sub ruleset_chain_add_ndp { |
e8415920 | 2131 | my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_; |
a83abe93 WB |
2132 | return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp}); |
2133 | ||
1e9c5070 | 2134 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept); |
d7aa51ac | 2135 | if ($direction ne 'OUT' || $options->{radv}) { |
1e9c5070 | 2136 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept); |
d7aa51ac | 2137 | } |
1e9c5070 TW |
2138 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept); |
2139 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept); | |
a83abe93 WB |
2140 | } |
2141 | ||
e2943485 | 2142 | sub ruleset_chain_add_conn_filters { |
27c49e25 | 2143 | my ($ruleset, $chain, $allow_invalid, $accept) = @_; |
e2943485 | 2144 | |
27c49e25 CE |
2145 | if (!$allow_invalid) { |
2146 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP"); | |
2147 | } | |
1e9c5070 | 2148 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept"); |
e2943485 DM |
2149 | } |
2150 | ||
2151 | sub ruleset_chain_add_input_filters { | |
88c26d5e | 2152 | my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_; |
2428e394 AD |
2153 | |
2154 | if ($cluster_conf->{ipset}->{blacklist}){ | |
b5831a0d AD |
2155 | if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) { |
2156 | ruleset_create_chain($ruleset, "PVEFW-blacklist"); | |
3489f8a2 | 2157 | ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0); |
b5831a0d | 2158 | } |
88c26d5e | 2159 | my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion); |
1e9c5070 | 2160 | ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist"); |
2428e394 | 2161 | } |
e2943485 DM |
2162 | |
2163 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { | |
5b5c42b1 | 2164 | if ($ipversion == 4) { |
1e9c5070 | 2165 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs"); |
5b5c42b1 | 2166 | } |
e2943485 DM |
2167 | } |
2168 | ||
2169 | if ($options->{tcpflags}) { | |
1e9c5070 | 2170 | ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags"); |
e2943485 DM |
2171 | } |
2172 | } | |
2173 | ||
9e15114a | 2174 | sub ruleset_create_vm_chain { |
88c26d5e | 2175 | my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_; |
3a616aa0 | 2176 | |
9e15114a | 2177 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 2178 | my $accept = generate_nfqueue($options); |
3a616aa0 | 2179 | |
ce15d90b | 2180 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
dcafc5fb WB |
2181 | if ($ipversion == 4) { |
2182 | if ($direction eq 'OUT') { | |
2183 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2184 | { action => 'PVEFW-SET-ACCEPT-MARK', | |
2185 | proto => 'udp', sport => 68, dport => 67 }); | |
2186 | } else { | |
2187 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2188 | { action => 'ACCEPT', | |
2189 | proto => 'udp', sport => 67, dport => 68 }); | |
2190 | } | |
2191 | } elsif ($ipversion == 6) { | |
2192 | if ($direction eq 'OUT') { | |
2193 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2194 | { action => 'PVEFW-SET-ACCEPT-MARK', | |
2195 | proto => 'udp', sport => 546, dport => 547 }); | |
2196 | } else { | |
2197 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2198 | { action => 'ACCEPT', | |
2199 | proto => 'udp', sport => 547, dport => 546 }); | |
2200 | } | |
76a2d1e7 | 2201 | } |
dcafc5fb | 2202 | |
ce15d90b DM |
2203 | } |
2204 | ||
b21aca2c DM |
2205 | if ($direction eq 'OUT') { |
2206 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
1e9c5070 | 2207 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP"); |
b21aca2c | 2208 | } |
d7aa51ac | 2209 | if ($ipversion == 6 && !$options->{radv}) { |
1e9c5070 | 2210 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP"); |
d7aa51ac | 2211 | } |
808d711d | 2212 | if ($ipfilter_ipset) { |
1e9c5070 | 2213 | ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP"); |
808d711d | 2214 | } |
1e9c5070 | 2215 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
c29f55c9 | 2216 | } |
e8415920 WB |
2217 | |
2218 | my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept"; | |
2219 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action); | |
9e15114a DM |
2220 | } |
2221 | ||
4bc6b5ac | 2222 | sub ruleset_add_group_rule { |
aedde2c2 | 2223 | my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_; |
4bc6b5ac DM |
2224 | |
2225 | my $group = $rule->{action}; | |
2226 | my $group_chain = "GROUP-$group-$direction"; | |
2227 | if(!ruleset_chain_exist($ruleset, $group_chain)){ | |
aedde2c2 | 2228 | generate_group_rules($ruleset, $cluster_conf, $group, $ipversion); |
4bc6b5ac | 2229 | } |
bfc488f6 | 2230 | |
f8b12fff | 2231 | if ($direction eq 'OUT' && $rule->{iface_out}) { |
1e9c5070 | 2232 | ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain"); |
f8b12fff | 2233 | } elsif ($direction eq 'IN' && $rule->{iface_in}) { |
1e9c5070 | 2234 | ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain"); |
4bc6b5ac | 2235 | } else { |
1e9c5070 | 2236 | ruleset_addrule($ruleset, $chain, "", "-j $group_chain"); |
4bc6b5ac DM |
2237 | } |
2238 | ||
1e9c5070 | 2239 | ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action"); |
4bc6b5ac DM |
2240 | } |
2241 | ||
9e15114a | 2242 | sub ruleset_generate_vm_rules { |
3489f8a2 | 2243 | my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_; |
9e15114a DM |
2244 | |
2245 | my $lc_direction = lc($direction); | |
c29f55c9 | 2246 | |
6b8ca015 DM |
2247 | my $in_accept = generate_nfqueue($options); |
2248 | ||
92e976b3 DM |
2249 | foreach my $rule (@$rules) { |
2250 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
b7ab6989 | 2251 | next if !$rule->{enable} || $rule->{errors}; |
006490cb | 2252 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
84870b1a | 2253 | |
92e976b3 | 2254 | if ($rule->{type} eq 'group') { |
4bc6b5ac | 2255 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction, |
aedde2c2 | 2256 | $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion); |
92e976b3 DM |
2257 | } else { |
2258 | next if $rule->{type} ne $lc_direction; | |
921dfb33 | 2259 | eval { |
3489f8a2 | 2260 | $rule->{logmsg} = "$rule->{action}: "; |
921dfb33 | 2261 | if ($direction eq 'OUT') { |
180da76c | 2262 | rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
3489f8a2 | 2263 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid); |
921dfb33 | 2264 | } else { |
180da76c | 2265 | rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" }); |
3489f8a2 | 2266 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid); |
921dfb33 DM |
2267 | } |
2268 | }; | |
2269 | warn $@ if $@; | |
4e6112f9 | 2270 | } |
3a616aa0 | 2271 | } |
9e15114a DM |
2272 | } |
2273 | ||
b47ecc88 AD |
2274 | sub generate_nfqueue { |
2275 | my ($options) = @_; | |
2276 | ||
73089769 DM |
2277 | if ($options->{ips}) { |
2278 | my $action = "NFQUEUE"; | |
2279 | if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
2280 | if (defined($3) && defined($1)) { | |
b47ecc88 | 2281 | $action .= " --queue-balance $1:$3"; |
73089769 | 2282 | } elsif (defined($1)) { |
b47ecc88 AD |
2283 | $action .= " --queue-num $1"; |
2284 | } | |
2285 | } | |
8dc92812 | 2286 | $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10 |
73089769 DM |
2287 | return $action; |
2288 | } else { | |
2289 | return "ACCEPT"; | |
b47ecc88 | 2290 | } |
b47ecc88 AD |
2291 | } |
2292 | ||
da6fc60b | 2293 | sub ruleset_generate_vm_ipsrules { |
a01c32c7 | 2294 | my ($ruleset, $options, $direction, $iface) = @_; |
da6fc60b AD |
2295 | |
2296 | if ($options->{ips} && $direction eq 'IN') { | |
2297 | my $nfqueue = generate_nfqueue($options); | |
2298 | ||
a01c32c7 | 2299 | if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) { |
da6fc60b AD |
2300 | ruleset_create_chain($ruleset, "PVEFW-IPS"); |
2301 | } | |
2302 | ||
1e9c5070 | 2303 | ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue"); |
da6fc60b AD |
2304 | } |
2305 | } | |
2306 | ||
9e15114a | 2307 | sub generate_tap_rules_direction { |
84870b1a | 2308 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_; |
9e15114a DM |
2309 | |
2310 | my $lc_direction = lc($direction); | |
2311 | ||
2312 | my $rules = $vmfw_conf->{rules}; | |
2313 | ||
2314 | my $options = $vmfw_conf->{options}; | |
2315 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
2316 | ||
2317 | my $tapchain = "$iface-$direction"; | |
2318 | ||
b692f42c | 2319 | my $ipfilter_name = compute_ipfilter_ipset_name($netid); |
88c26d5e | 2320 | my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion) |
74601077 | 2321 | if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name}; |
808d711d | 2322 | |
a34cfdd0 | 2323 | # create chain with mac and ip filter |
88c26d5e | 2324 | ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction); |
9e15114a | 2325 | |
a34cfdd0 | 2326 | if ($options->{enable}) { |
3489f8a2 | 2327 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid); |
3a616aa0 | 2328 | |
a34cfdd0 | 2329 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface); |
da6fc60b | 2330 | |
a34cfdd0 DM |
2331 | # implement policy |
2332 | my $policy; | |
ccae0b50 | 2333 | |
a34cfdd0 DM |
2334 | if ($direction eq 'OUT') { |
2335 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
2336 | } else { | |
76448f08 | 2337 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
a34cfdd0 | 2338 | } |
ccae0b50 | 2339 | |
a34cfdd0 DM |
2340 | my $accept = generate_nfqueue($options); |
2341 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
88c26d5e | 2342 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action); |
a34cfdd0 DM |
2343 | } else { |
2344 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT'; | |
88c26d5e | 2345 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action); |
a34cfdd0 | 2346 | } |
3a616aa0 | 2347 | |
3fa83edf | 2348 | # plug the tap chain to bridge chain |
3cc81077 | 2349 | if ($direction eq 'IN') { |
a01c32c7 | 2350 | ruleset_addrule($ruleset, "PVEFW-FWBR-IN", |
3489f8a2 | 2351 | "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain", $loglevel, 'FWBR-IN: ', $vmid); |
3cc81077 | 2352 | } else { |
a01c32c7 | 2353 | ruleset_addrule($ruleset, "PVEFW-FWBR-OUT", |
3489f8a2 | 2354 | "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain", $loglevel, 'FWBR-OUT: ', $vmid); |
3cc81077 | 2355 | } |
3a616aa0 AD |
2356 | } |
2357 | ||
d18c1e2b | 2358 | sub enable_host_firewall { |
aedde2c2 | 2359 | my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_; |
0bd5f137 | 2360 | |
92e976b3 | 2361 | my $options = $hostfw_conf->{options}; |
63324b09 | 2362 | my $cluster_options = $cluster_conf->{options}; |
92e976b3 | 2363 | my $rules = $hostfw_conf->{rules}; |
35f0c37e | 2364 | my $cluster_rules = $cluster_conf->{rules}; |
178a63be | 2365 | |
3fa83edf | 2366 | # host inbound firewall |
dec84fcd DM |
2367 | my $chain = "PVEFW-HOST-IN"; |
2368 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 2369 | |
178a63be DM |
2370 | my $loglevel = get_option_log_level($options, "log_level_in"); |
2371 | ||
1e9c5070 | 2372 | ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT"); |
4ac863a6 | 2373 | |
27c49e25 | 2374 | ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT'); |
e8415920 | 2375 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN'); |
88c26d5e | 2376 | ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel); |
fb424a00 | 2377 | |
23e888f8 DM |
2378 | # we use RETURN because we need to check also tap rules |
2379 | my $accept_action = 'RETURN'; | |
2380 | ||
1e9c5070 | 2381 | ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast |
cc8dc02f | 2382 | |
35f0c37e DM |
2383 | # add host rules first, so that cluster wide rules can be overwritten |
2384 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2385 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2386 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
bfc488f6 | 2387 | |
f8b12fff | 2388 | $rule->{iface_in} = $rule->{iface} if $rule->{iface}; |
5383df39 | 2389 | |
1a9978ed DM |
2390 | eval { |
2391 | if ($rule->{type} eq 'group') { | |
aedde2c2 | 2392 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion); |
1a9978ed | 2393 | } elsif ($rule->{type} eq 'in') { |
180da76c | 2394 | rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
3489f8a2 | 2395 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0); |
1a9978ed DM |
2396 | } |
2397 | }; | |
2398 | warn $@ if $@; | |
f8b12fff | 2399 | delete $rule->{iface_in}; |
0bd5f137 | 2400 | } |
eb399cef DM |
2401 | |
2402 | # allow standard traffic for management ipset (includes cluster network) | |
88c26d5e | 2403 | my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion); |
708ba714 | 2404 | my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src"; |
1e9c5070 TW |
2405 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API |
2406 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console | |
2407 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy | |
2408 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH | |
bfc488f6 | 2409 | |
afcd29b3 DM |
2410 | my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; |
2411 | my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion}; | |
3bc79f87 | 2412 | |
eb399cef | 2413 | # corosync |
35d1d6da | 2414 | if ($localnet && ($ipversion == $localnet_ver)) { |
1e9c5070 TW |
2415 | my $corosync_rule = "-p udp --dport 5404:5405"; |
2416 | ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule", "-j $accept_action"); | |
2417 | ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action"); | |
3bc79f87 | 2418 | } |
0bd5f137 | 2419 | |
23e888f8 | 2420 | # implement input policy |
63324b09 | 2421 | my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default |
88c26d5e | 2422 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 2423 | |
3fa83edf | 2424 | # host outbound firewall |
aadd745e | 2425 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
2426 | ruleset_create_chain($ruleset, $chain); |
2427 | ||
178a63be DM |
2428 | $loglevel = get_option_log_level($options, "log_level_out"); |
2429 | ||
1e9c5070 | 2430 | ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT"); |
e2943485 | 2431 | |
27c49e25 | 2432 | ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT'); |
e2943485 | 2433 | |
23e888f8 DM |
2434 | # we use RETURN because we may want to check other thigs later |
2435 | $accept_action = 'RETURN'; | |
e8415920 | 2436 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action"); |
23e888f8 | 2437 | |
1e9c5070 | 2438 | ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast |
cc8dc02f | 2439 | |
35f0c37e DM |
2440 | # add host rules first, so that cluster wide rules can be overwritten |
2441 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2442 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2443 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
5383df39 | 2444 | |
f8b12fff | 2445 | $rule->{iface_out} = $rule->{iface} if $rule->{iface}; |
1a9978ed | 2446 | eval { |
3489f8a2 | 2447 | $rule->{logmsg} = "$rule->{action}: "; |
1a9978ed | 2448 | if ($rule->{type} eq 'group') { |
aedde2c2 | 2449 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion); |
1a9978ed | 2450 | } elsif ($rule->{type} eq 'out') { |
180da76c | 2451 | rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
3489f8a2 | 2452 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0); |
1a9978ed DM |
2453 | } |
2454 | }; | |
2455 | warn $@ if $@; | |
f8b12fff | 2456 | delete $rule->{iface_out}; |
0bd5f137 AD |
2457 | } |
2458 | ||
3bc79f87 | 2459 | # allow standard traffic on cluster network |
35d1d6da | 2460 | if ($localnet && ($ipversion == $localnet_ver)) { |
1e9c5070 TW |
2461 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API |
2462 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH | |
2463 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console | |
2464 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy | |
bfc488f6 | 2465 | |
1e9c5070 TW |
2466 | my $corosync_rule = "-p udp --dport 5404:5405"; |
2467 | ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule", "-j $accept_action"); | |
2468 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action"); | |
3bc79f87 DM |
2469 | } |
2470 | ||
23e888f8 | 2471 | # implement output policy |
63324b09 | 2472 | $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default |
88c26d5e | 2473 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
6158271d | 2474 | |
1e9c5070 TW |
2475 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT"); |
2476 | ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
2477 | } |
2478 | ||
2479 | sub generate_group_rules { | |
aedde2c2 | 2480 | my ($ruleset, $cluster_conf, $group, $ipversion) = @_; |
9d31b418 | 2481 | |
c6f5cc88 | 2482 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 2483 | |
b4deedab DM |
2484 | if (!$rules) { |
2485 | warn "no such security group '$group'\n"; | |
2486 | $rules = []; # create empty chain | |
2487 | } | |
2488 | ||
3fa83edf | 2489 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 2490 | |
3fa83edf | 2491 | ruleset_create_chain($ruleset, $chain); |
1e9c5070 | 2492 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
9d31b418 | 2493 | |
92e976b3 DM |
2494 | foreach my $rule (@$rules) { |
2495 | next if $rule->{type} ne 'in'; | |
7a5a402b | 2496 | next if !$rule->{enable} || $rule->{errors}; |
aedde2c2 | 2497 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
180da76c | 2498 | rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
2dc0a26e | 2499 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf); |
9d31b418 AD |
2500 | } |
2501 | ||
3fa83edf | 2502 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 2503 | |
3fa83edf | 2504 | ruleset_create_chain($ruleset, $chain); |
1e9c5070 | 2505 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
9d31b418 | 2506 | |
92e976b3 DM |
2507 | foreach my $rule (@$rules) { |
2508 | next if $rule->{type} ne 'out'; | |
7a5a402b | 2509 | next if !$rule->{enable} || $rule->{errors}; |
aedde2c2 | 2510 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
92e976b3 DM |
2511 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to |
2512 | # check also other tap rules later | |
180da76c | 2513 | rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }); |
2dc0a26e | 2514 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf); |
9d31b418 | 2515 | } |
9d31b418 AD |
2516 | } |
2517 | ||
51bae274 DM |
2518 | my $MAX_NETS = 32; |
2519 | my $valid_netdev_names = {}; | |
2520 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
2521 | $valid_netdev_names->{"net$i"} = 1; | |
2522 | } | |
5e1267a5 | 2523 | |
fe3d79b4 WB |
2524 | sub get_mark_values { |
2525 | my ($value, $mask) = @_; | |
2526 | $value = hex($value) if $value =~ /^0x/; | |
2527 | $mask = hex($mask) if defined($mask) && $mask =~ /^0x/; | |
2528 | $mask = 0xffffffff if !defined($mask); | |
2529 | return ($value, $mask); | |
2530 | } | |
2531 | ||
51bae274 | 2532 | sub parse_fw_rule { |
a523e057 | 2533 | my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_; |
5e1267a5 | 2534 | |
d4cda423 DM |
2535 | my $orig_line = $line; |
2536 | ||
6d9246e7 DM |
2537 | my $rule = {}; |
2538 | ||
11bac5c2 | 2539 | # we can add single line comments to the end of the rule |
6d9246e7 DM |
2540 | if ($line =~ s/#\s*(.*?)\s*$//) { |
2541 | $rule->{comment} = decode('utf8', $1); | |
2542 | } | |
11bac5c2 DM |
2543 | |
2544 | # we can disable a rule when prefixed with '|' | |
ea9e5116 | 2545 | |
6d9246e7 | 2546 | $rule->{enable} = $line =~ s/^\|// ? 0 : 1; |
51bae274 | 2547 | |
dba740a9 DM |
2548 | $line =~ s/^(\S+)\s+(\S+)\s*// || |
2549 | die "unable to parse rule: $line\n"; | |
6d9246e7 DM |
2550 | |
2551 | $rule->{type} = lc($1); | |
2552 | $rule->{action} = $2; | |
2553 | ||
2554 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2555 | if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
2556 | $rule->{macro} = $1; | |
2557 | $rule->{action} = $2; | |
92e976b3 | 2558 | } |
51bae274 DM |
2559 | } |
2560 | ||
dba740a9 DM |
2561 | while (length($line)) { |
2562 | if ($line =~ s/^-i (\S+)\s*//) { | |
6d9246e7 | 2563 | $rule->{iface} = $1; |
dba740a9 DM |
2564 | next; |
2565 | } | |
51bae274 | 2566 | |
6d9246e7 | 2567 | last if $rule->{type} eq 'group'; |
51bae274 | 2568 | |
dba740a9 | 2569 | if ($line =~ s/^-p (\S+)\s*//) { |
6d9246e7 | 2570 | $rule->{proto} = $1; |
dba740a9 DM |
2571 | next; |
2572 | } | |
6d9246e7 | 2573 | |
dba740a9 | 2574 | if ($line =~ s/^-dport (\S+)\s*//) { |
6d9246e7 | 2575 | $rule->{dport} = $1; |
dba740a9 DM |
2576 | next; |
2577 | } | |
6d9246e7 | 2578 | |
dba740a9 | 2579 | if ($line =~ s/^-sport (\S+)\s*//) { |
6d9246e7 | 2580 | $rule->{sport} = $1; |
dba740a9 DM |
2581 | next; |
2582 | } | |
2583 | if ($line =~ s/^-source (\S+)\s*//) { | |
6d9246e7 | 2584 | $rule->{source} = $1; |
dba740a9 DM |
2585 | next; |
2586 | } | |
2587 | if ($line =~ s/^-dest (\S+)\s*//) { | |
6d9246e7 | 2588 | $rule->{dest} = $1; |
dba740a9 DM |
2589 | next; |
2590 | } | |
3489f8a2 CE |
2591 | if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) { |
2592 | $rule->{log} = $1; | |
2593 | next; | |
2594 | } | |
51bae274 | 2595 | |
dba740a9 DM |
2596 | last; |
2597 | } | |
ba791b1f | 2598 | |
dba740a9 | 2599 | die "unable to parse rule parameters: $line\n" if length($line); |
51bae274 | 2600 | |
a523e057 | 2601 | $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1); |
eedcb564 WB |
2602 | if ($rule->{errors}) { |
2603 | # The verbose flag really means we're running from the CLI and want | |
2604 | # output on the console - in the other case we really want such errors | |
2605 | # to go into the syslog instead. | |
2606 | my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) }; | |
2607 | $log->("$prefix - errors in rule parameters: $orig_line\n"); | |
d4cda423 | 2608 | foreach my $p (keys %{$rule->{errors}}) { |
eedcb564 | 2609 | $log->(" $p: $rule->{errors}->{$p}\n"); |
d4cda423 DM |
2610 | } |
2611 | } | |
6d9246e7 DM |
2612 | |
2613 | return $rule; | |
51bae274 DM |
2614 | } |
2615 | ||
c5e8b008 AD |
2616 | sub verify_ethertype { |
2617 | my ($value) = @_; | |
2618 | my $types = get_etc_ethertypes(); | |
2619 | die "unknown ethernet protocol type: $value\n" | |
2620 | if !defined($types->{byname}->{$value}) && | |
2621 | !defined($types->{byid}->{$value}); | |
2622 | } | |
2623 | ||
2d404ffc | 2624 | sub parse_vmfw_option { |
85c6eaed DM |
2625 | my ($line) = @_; |
2626 | ||
2627 | my ($opt, $value); | |
2628 | ||
178a63be DM |
2629 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
2630 | ||
74601077 | 2631 | if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
2632 | $opt = lc($1); |
2633 | $value = int($2); | |
178a63be DM |
2634 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
2635 | $opt = lc($1); | |
2636 | $value = $2 ? lc($3) : ''; | |
72f63fde | 2637 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
2638 | $opt = lc($1); |
2639 | $value = uc($3); | |
b47ecc88 AD |
2640 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
2641 | $opt = lc($1); | |
2642 | $value = $2; | |
c5e8b008 AD |
2643 | } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) { |
2644 | $opt = lc($1); | |
2645 | $value = $2; | |
2646 | verify_ethertype($_) foreach split(/\s*,\s*/, $value); | |
9c6b6efd | 2647 | } else { |
85c6eaed DM |
2648 | die "can't parse option '$line'\n" |
2649 | } | |
2650 | ||
2651 | return ($opt, $value); | |
2652 | } | |
2653 | ||
2d404ffc DM |
2654 | sub parse_hostfw_option { |
2655 | my ($line) = @_; | |
2656 | ||
2657 | my ($opt, $value); | |
2658 | ||
2659 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
2660 | ||
27c49e25 | 2661 | if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid):\s*(0|1)\s*$/i) { |
2d404ffc DM |
2662 | $opt = lc($1); |
2663 | $value = int($2); | |
178a63be | 2664 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
2665 | $opt = lc($1); |
2666 | $value = $2 ? lc($3) : ''; | |
28c082a1 | 2667 | } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) { |
490cdead DM |
2668 | $opt = lc($1); |
2669 | $value = int($2); | |
2d404ffc | 2670 | } else { |
2d404ffc DM |
2671 | die "can't parse option '$line'\n" |
2672 | } | |
2673 | ||
2674 | return ($opt, $value); | |
2675 | } | |
2676 | ||
c6f5cc88 DM |
2677 | sub parse_clusterfw_option { |
2678 | my ($line) = @_; | |
2679 | ||
2680 | my ($opt, $value); | |
2681 | ||
72d055fc | 2682 | if ($line =~ m/^(enable):\s*(\d+)\s*$/i) { |
c6f5cc88 DM |
2683 | $opt = lc($1); |
2684 | $value = int($2); | |
72d055fc AG |
2685 | if (($value > 1) && ((time() - $value) > 60)) { |
2686 | $value = 0 | |
2687 | } | |
2549e7ef | 2688 | } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) { |
84025e99 SI |
2689 | $opt = lc($1); |
2690 | $value = int($2); | |
63324b09 DM |
2691 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2692 | $opt = lc($1); | |
2693 | $value = uc($3); | |
c6f5cc88 | 2694 | } else { |
c6f5cc88 DM |
2695 | die "can't parse option '$line'\n" |
2696 | } | |
2697 | ||
2698 | return ($opt, $value); | |
2699 | } | |
2700 | ||
6c221576 DM |
2701 | sub resolve_alias { |
2702 | my ($clusterfw_conf, $fw_conf, $cidr) = @_; | |
2703 | ||
6d959e3f | 2704 | my $alias = lc($cidr); |
04f5088f | 2705 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
6d959e3f | 2706 | $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf; |
6c221576 | 2707 | |
6d959e3f DM |
2708 | die "no such alias '$cidr'\n" if !$e;; |
2709 | ||
2710 | return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr}; | |
6c221576 DM |
2711 | } |
2712 | ||
ae029a88 DM |
2713 | sub parse_ip_or_cidr { |
2714 | my ($cidr) = @_; | |
2715 | ||
2716 | my $ipversion; | |
2717 | ||
2718 | if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) { | |
2719 | $cidr =~ s|/128$||; | |
2720 | $ipversion = 6; | |
2721 | } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { | |
2722 | $cidr =~ s|/32$||; | |
2723 | $ipversion = 4; | |
2724 | } else { | |
2725 | die "value does not look like a valid IP address or CIDR network\n"; | |
2726 | } | |
2727 | ||
2728 | return wantarray ? ($cidr, $ipversion) : $cidr; | |
2729 | } | |
2730 | ||
e76a9f53 | 2731 | sub parse_alias { |
92e1209b AD |
2732 | my ($line) = @_; |
2733 | ||
81d574a7 DM |
2734 | # we can add single line comments to the end of the line |
2735 | my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//; | |
2736 | ||
92e1209b | 2737 | if ($line =~ m/^(\S+)\s(\S+)$/) { |
81d574a7 | 2738 | my ($name, $cidr) = ($1, $2); |
ae029a88 DM |
2739 | my $ipversion; |
2740 | ||
2741 | ($cidr, $ipversion) = parse_ip_or_cidr($cidr); | |
2742 | ||
81d574a7 DM |
2743 | my $data = { |
2744 | name => $name, | |
2745 | cidr => $cidr, | |
70e524eb | 2746 | ipversion => $ipversion, |
81d574a7 DM |
2747 | }; |
2748 | $data->{comment} = $comment if $comment; | |
2749 | return $data; | |
92e1209b AD |
2750 | } |
2751 | ||
81d574a7 | 2752 | return undef; |
92e1209b AD |
2753 | } |
2754 | ||
e5cd1ee0 | 2755 | sub generic_fw_config_parser { |
1210ae94 | 2756 | my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_; |
5e1267a5 | 2757 | |
51bae274 DM |
2758 | my $section; |
2759 | my $group; | |
2760 | ||
1210ae94 | 2761 | my $res = $empty_conf; |
6158271d | 2762 | |
51bae274 DM |
2763 | while (defined(my $line = <$fh>)) { |
2764 | next if $line =~ m/^#/; | |
2765 | next if $line =~ m/^\s*$/; | |
2766 | ||
c8c534f7 DM |
2767 | chomp $line; |
2768 | ||
961b4928 DM |
2769 | my $linenr = $fh->input_line_number(); |
2770 | my $prefix = "$filename (line $linenr)"; | |
2771 | ||
1210ae94 | 2772 | if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) { |
c6f5cc88 DM |
2773 | $section = 'options'; |
2774 | next; | |
2775 | } | |
2776 | ||
1210ae94 | 2777 | if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) { |
92e1209b AD |
2778 | $section = 'aliases'; |
2779 | next; | |
2780 | } | |
2781 | ||
1210ae94 | 2782 | if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
c6f5cc88 | 2783 | $section = 'groups'; |
92e976b3 | 2784 | $group = lc($1); |
0d22acb3 | 2785 | my $comment = $2; |
351052d1 DM |
2786 | eval { |
2787 | die "security group name too long\n" if length($group) > $max_group_name_length; | |
2788 | die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/; | |
2789 | }; | |
2790 | if (my $err = $@) { | |
2791 | ($section, $group, $comment) = undef; | |
2792 | warn "$prefix: $err"; | |
2793 | next; | |
2794 | } | |
2795 | ||
c85c87f9 | 2796 | $res->{$section}->{$group} = []; |
649e4d57 DM |
2797 | $res->{group_comments}->{$group} = decode('utf8', $comment) |
2798 | if $comment; | |
51bae274 DM |
2799 | next; |
2800 | } | |
34cdedfa | 2801 | |
1210ae94 | 2802 | if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) { |
c6f5cc88 DM |
2803 | $section = 'rules'; |
2804 | next; | |
2805 | } | |
cbb5d6f3 | 2806 | |
1210ae94 | 2807 | if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
34cdedfa AD |
2808 | $section = 'ipset'; |
2809 | $group = lc($1); | |
d72c631c | 2810 | my $comment = $2; |
351052d1 DM |
2811 | eval { |
2812 | die "ipset name too long\n" if length($group) > $max_ipset_name_length; | |
2813 | die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/; | |
2814 | }; | |
2815 | if (my $err = $@) { | |
2816 | ($section, $group, $comment) = undef; | |
2817 | warn "$prefix: $err"; | |
2818 | next; | |
2819 | } | |
2820 | ||
c85c87f9 | 2821 | $res->{$section}->{$group} = []; |
e34d0e58 | 2822 | $res->{ipset_comments}->{$group} = decode('utf8', $comment) |
649e4d57 | 2823 | if $comment; |
34cdedfa AD |
2824 | next; |
2825 | } | |
2826 | ||
c6f5cc88 | 2827 | if (!$section) { |
cbb5d6f3 | 2828 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
2829 | next; |
2830 | } | |
2831 | ||
c6f5cc88 DM |
2832 | if ($section eq 'options') { |
2833 | eval { | |
1210ae94 DM |
2834 | my ($opt, $value); |
2835 | if ($rule_env eq 'cluster') { | |
2836 | ($opt, $value) = parse_clusterfw_option($line); | |
2837 | } elsif ($rule_env eq 'host') { | |
2838 | ($opt, $value) = parse_hostfw_option($line); | |
2839 | } else { | |
2840 | ($opt, $value) = parse_vmfw_option($line); | |
2841 | } | |
c6f5cc88 DM |
2842 | $res->{options}->{$opt} = $value; |
2843 | }; | |
2844 | warn "$prefix: $@" if $@; | |
92e1209b AD |
2845 | } elsif ($section eq 'aliases') { |
2846 | eval { | |
e76a9f53 | 2847 | my $data = parse_alias($line); |
81d574a7 | 2848 | $res->{aliases}->{lc($data->{name})} = $data; |
92e1209b AD |
2849 | }; |
2850 | warn "$prefix: $@" if $@; | |
c6f5cc88 DM |
2851 | } elsif ($section eq 'rules') { |
2852 | my $rule; | |
1210ae94 | 2853 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); }; |
c6f5cc88 DM |
2854 | if (my $err = $@) { |
2855 | warn "$prefix: $err"; | |
2856 | next; | |
2857 | } | |
2858 | push @{$res->{$section}}, $rule; | |
2859 | } elsif ($section eq 'groups') { | |
34cdedfa | 2860 | my $rule; |
1210ae94 | 2861 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); }; |
34cdedfa AD |
2862 | if (my $err = $@) { |
2863 | warn "$prefix: $err"; | |
2864 | next; | |
2865 | } | |
3f95d14a | 2866 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a | 2867 | } elsif ($section eq 'ipset') { |
9d6f90e6 DM |
2868 | # we can add single line comments to the end of the rule |
2869 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; | |
2870 | ||
30f1b100 | 2871 | $line =~ m/^(\!)?\s*(\S+)\s*$/; |
2a052ee3 | 2872 | my $nomatch = $1; |
9d6f90e6 | 2873 | my $cidr = $2; |
d46b1ef6 DM |
2874 | my $errors; |
2875 | ||
2876 | if ($nomatch && !$feature_ipset_nomatch) { | |
2877 | $errors->{nomatch} = "nomatch not supported by kernel"; | |
2878 | } | |
2a052ee3 | 2879 | |
4803b296 DM |
2880 | eval { |
2881 | if ($cidr =~ m/^${ip_alias_pattern}$/) { | |
2882 | resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists | |
2883 | } else { | |
ae029a88 | 2884 | $cidr = parse_ip_or_cidr($cidr); |
92e1209b | 2885 | } |
4803b296 DM |
2886 | }; |
2887 | if (my $err = $@) { | |
c8c534f7 | 2888 | chomp $err; |
d46b1ef6 | 2889 | $errors->{cidr} = $err; |
2a052ee3 | 2890 | } |
2a052ee3 | 2891 | |
b14db52f WB |
2892 | if ($cidr =~ m!/0+$!) { |
2893 | $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n"; | |
2894 | } | |
2895 | ||
e34d0e58 | 2896 | my $entry = { cidr => $cidr }; |
9d6f90e6 DM |
2897 | $entry->{nomatch} = 1 if $nomatch; |
2898 | $entry->{comment} = $comment if $comment; | |
d46b1ef6 | 2899 | $entry->{errors} = $errors if $errors; |
e34d0e58 | 2900 | |
c8c534f7 | 2901 | if ($verbose && $errors) { |
9a3061c7 | 2902 | warn "$prefix - errors in ipset '$group': $line\n"; |
c8c534f7 DM |
2903 | foreach my $p (keys %{$errors}) { |
2904 | warn " $p: $errors->{$p}\n"; | |
2905 | } | |
2906 | } | |
2907 | ||
9d6f90e6 | 2908 | push @{$res->{$section}->{$group}}, $entry; |
1210ae94 DM |
2909 | } else { |
2910 | warn "$prefix: skip line - unknown section\n"; | |
2911 | next; | |
51bae274 | 2912 | } |
5e1267a5 DM |
2913 | } |
2914 | ||
2915 | return $res; | |
2916 | } | |
2917 | ||
e5cd1ee0 | 2918 | sub parse_hostfw_config { |
1210ae94 DM |
2919 | my ($filename, $fh, $cluster_conf, $verbose) = @_; |
2920 | ||
2921 | my $empty_conf = { rules => [], options => {}}; | |
2922 | ||
e5cd1ee0 | 2923 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host'); |
1210ae94 DM |
2924 | } |
2925 | ||
e5cd1ee0 | 2926 | sub parse_vmfw_config { |
1210ae94 DM |
2927 | my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_; |
2928 | ||
2929 | my $empty_conf = { | |
2930 | rules => [], | |
2931 | options => {}, | |
2932 | aliases => {}, | |
2933 | ipset => {} , | |
2934 | ipset_comments => {}, | |
2935 | }; | |
2936 | ||
e5cd1ee0 | 2937 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env); |
1210ae94 DM |
2938 | } |
2939 | ||
e5cd1ee0 | 2940 | sub parse_clusterfw_config { |
1210ae94 DM |
2941 | my ($filename, $fh, $verbose) = @_; |
2942 | ||
2943 | my $section; | |
2944 | my $group; | |
2945 | ||
2946 | my $empty_conf = { | |
2947 | rules => [], | |
2948 | options => {}, | |
2949 | aliases => {}, | |
2950 | groups => {}, | |
2951 | group_comments => {}, | |
2952 | ipset => {} , | |
2953 | ipset_comments => {}, | |
2954 | }; | |
2955 | ||
e5cd1ee0 | 2956 | return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster'); |
1210ae94 DM |
2957 | } |
2958 | ||
06320eb0 DM |
2959 | sub run_locked { |
2960 | my ($code, @param) = @_; | |
2961 | ||
2962 | my $timeout = 10; | |
2963 | ||
2964 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2965 | ||
2966 | die $@ if $@; | |
2967 | ||
2968 | return $res; | |
2969 | } | |
2970 | ||
5e1267a5 DM |
2971 | sub read_local_vm_config { |
2972 | ||
5e1267a5 | 2973 | my $qemu = {}; |
3b4882dc | 2974 | my $lxc = {}; |
5e1267a5 | 2975 | |
fdefeeab | 2976 | my $vmdata = { qemu => $qemu, lxc => $lxc }; |
5e1267a5 | 2977 | |
c8301d63 DM |
2978 | my $vmlist = PVE::Cluster::get_vmlist(); |
2979 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2980 | my $ids = $vmlist->{ids}; | |
2981 | ||
2982 | foreach my $vmid (keys %$ids) { | |
2983 | next if !$vmid; # skip VE0 | |
2984 | my $d = $ids->{$vmid}; | |
2985 | next if !$d->{node} || $d->{node} ne $nodename; | |
2986 | next if !$d->{type}; | |
fdefeeab | 2987 | if ($d->{type} eq 'qemu') { |
d9fee004 | 2988 | if ($have_qemu_server) { |
b5a16dd3 | 2989 | my $cfspath = PVE::QemuConfig->cfs_config_path($vmid); |
d9fee004 DM |
2990 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { |
2991 | $qemu->{$vmid} = $conf; | |
2992 | } | |
c8301d63 | 2993 | } |
3b4882dc AG |
2994 | } elsif ($d->{type} eq 'lxc') { |
2995 | if ($have_lxc) { | |
a7c85d56 | 2996 | my $cfspath = PVE::LXC::Config->cfs_config_path($vmid); |
3b4882dc AG |
2997 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { |
2998 | $lxc->{$vmid} = $conf; | |
2999 | } | |
3000 | } | |
3001 | } | |
5e1267a5 | 3002 | } |
d9fee004 | 3003 | |
5e1267a5 DM |
3004 | return $vmdata; |
3005 | }; | |
3006 | ||
e7b35711 | 3007 | sub load_vmfw_conf { |
a523e057 | 3008 | my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_; |
e7b35711 DM |
3009 | |
3010 | my $vmfw_conf = {}; | |
3011 | ||
21053409 | 3012 | $dir = $pvefw_conf_dir if !defined($dir); |
8aef5177 DM |
3013 | |
3014 | my $filename = "$dir/$vmid.fw"; | |
e7b35711 | 3015 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 3016 | $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose); |
708ba714 | 3017 | $vmfw_conf->{vmid} = $vmid; |
e7b35711 DM |
3018 | } |
3019 | ||
3020 | return $vmfw_conf; | |
3021 | } | |
3022 | ||
464f933e | 3023 | my $format_rules = sub { |
dba740a9 | 3024 | my ($rules, $allow_iface) = @_; |
464f933e DM |
3025 | |
3026 | my $raw = ''; | |
3027 | ||
3028 | foreach my $rule (@$rules) { | |
c14dacdf | 3029 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') { |
464f933e DM |
3030 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; |
3031 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
3032 | if ($rule->{macro}) { |
3033 | $raw .= " $rule->{macro}($rule->{action})"; | |
3034 | } else { | |
3035 | $raw .= " " . $rule->{action}; | |
3036 | } | |
dba740a9 DM |
3037 | if ($allow_iface && $rule->{iface}) { |
3038 | $raw .= " -i $rule->{iface}"; | |
3039 | } | |
c14dacdf DM |
3040 | |
3041 | if ($rule->{type} ne 'group') { | |
dba740a9 DM |
3042 | $raw .= " -source $rule->{source}" if $rule->{source}; |
3043 | $raw .= " -dest $rule->{dest}" if $rule->{dest}; | |
3044 | $raw .= " -p $rule->{proto}" if $rule->{proto}; | |
3045 | $raw .= " -dport $rule->{dport}" if $rule->{dport}; | |
3046 | $raw .= " -sport $rule->{sport}" if $rule->{sport}; | |
3489f8a2 | 3047 | $raw .= " -log $rule->{log}" if $rule->{log}; |
c14dacdf DM |
3048 | } |
3049 | ||
cbb5d6f3 | 3050 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
3051 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
3052 | $raw .= "\n"; | |
3053 | } else { | |
c14dacdf | 3054 | die "unknown rule type '$rule->{type}'"; |
464f933e DM |
3055 | } |
3056 | } | |
3057 | ||
3058 | return $raw; | |
3059 | }; | |
3060 | ||
3061 | my $format_options = sub { | |
68c90e21 DM |
3062 | my ($options) = @_; |
3063 | ||
3064 | my $raw = ''; | |
464f933e DM |
3065 | |
3066 | $raw .= "[OPTIONS]\n\n"; | |
3067 | foreach my $opt (keys %$options) { | |
3068 | $raw .= "$opt: $options->{$opt}\n"; | |
3069 | } | |
3070 | $raw .= "\n"; | |
68c90e21 DM |
3071 | |
3072 | return $raw; | |
464f933e DM |
3073 | }; |
3074 | ||
0d5f0a0f DM |
3075 | my $format_aliases = sub { |
3076 | my ($aliases) = @_; | |
3077 | ||
3078 | my $raw = ''; | |
3079 | ||
3080 | $raw .= "[ALIASES]\n\n"; | |
3081 | foreach my $k (keys %$aliases) { | |
81d574a7 DM |
3082 | my $e = $aliases->{$k}; |
3083 | $raw .= "$e->{name} $e->{cidr}"; | |
3084 | $raw .= " # " . encode('utf8', $e->{comment}) | |
3085 | if $e->{comment} && $e->{comment} !~ m/^\s*$/; | |
3086 | $raw .= "\n"; | |
0d5f0a0f DM |
3087 | } |
3088 | $raw .= "\n"; | |
3089 | ||
3090 | return $raw; | |
3091 | }; | |
3092 | ||
1210ae94 DM |
3093 | my $format_ipsets = sub { |
3094 | my ($fw_conf) = @_; | |
3095 | ||
9d6f90e6 DM |
3096 | my $raw = ''; |
3097 | ||
1210ae94 DM |
3098 | foreach my $ipset (sort keys %{$fw_conf->{ipset}}) { |
3099 | if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) { | |
3100 | my $utf8comment = encode('utf8', $comment); | |
3101 | $raw .= "[IPSET $ipset] # $utf8comment\n\n"; | |
3102 | } else { | |
3103 | $raw .= "[IPSET $ipset]\n\n"; | |
3104 | } | |
3105 | my $options = $fw_conf->{ipset}->{$ipset}; | |
6e299ae3 | 3106 | |
1210ae94 DM |
3107 | my $nethash = {}; |
3108 | foreach my $entry (@$options) { | |
3109 | $nethash->{$entry->{cidr}} = $entry; | |
3110 | } | |
3111 | ||
3112 | foreach my $cidr (sort keys %$nethash) { | |
3113 | my $entry = $nethash->{$cidr}; | |
3114 | my $line = $entry->{nomatch} ? '!' : ''; | |
3115 | $line .= $entry->{cidr}; | |
3116 | $line .= " # " . encode('utf8', $entry->{comment}) | |
3117 | if $entry->{comment} && $entry->{comment} !~ m/^\s*$/; | |
3118 | $raw .= "$line\n"; | |
3119 | } | |
3120 | ||
3121 | $raw .= "\n"; | |
9d6f90e6 | 3122 | } |
e34d0e58 | 3123 | |
9d6f90e6 DM |
3124 | return $raw; |
3125 | }; | |
3126 | ||
464f933e DM |
3127 | sub save_vmfw_conf { |
3128 | my ($vmid, $vmfw_conf) = @_; | |
3129 | ||
3130 | my $raw = ''; | |
3131 | ||
3132 | my $options = $vmfw_conf->{options}; | |
89ea63c8 | 3133 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 3134 | |
e76a9f53 | 3135 | my $aliases = $vmfw_conf->{aliases}; |
89ea63c8 | 3136 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e76a9f53 | 3137 | |
89ea63c8 | 3138 | $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset}; |
1210ae94 | 3139 | |
8824b2f0 | 3140 | my $rules = $vmfw_conf->{rules} || []; |
89ea63c8 | 3141 | if ($rules && scalar(@$rules)) { |
464f933e DM |
3142 | $raw .= "[RULES]\n\n"; |
3143 | $raw .= &$format_rules($rules, 1); | |
3144 | $raw .= "\n"; | |
3145 | } | |
3146 | ||
21053409 | 3147 | my $filename = "$pvefw_conf_dir/$vmid.fw"; |
c32e04e6 FG |
3148 | if ($raw) { |
3149 | mkdir $pvefw_conf_dir; | |
3150 | PVE::Tools::file_set_contents($filename, $raw); | |
3151 | } else { | |
3152 | unlink $filename; | |
3153 | } | |
464f933e DM |
3154 | } |
3155 | ||
edee9035 AG |
3156 | sub remove_vmfw_conf { |
3157 | my ($vmid) = @_; | |
3158 | ||
3159 | my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
3160 | ||
3161 | unlink $vmfw_conffile; | |
3162 | } | |
3163 | ||
5471ff7c AG |
3164 | sub clone_vmfw_conf { |
3165 | my ($vmid, $newid) = @_; | |
3166 | ||
3167 | my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
3168 | my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw"; | |
3169 | ||
3170 | if (-f $clonevm_conffile) { | |
3171 | unlink $clonevm_conffile; | |
3172 | } | |
3173 | if (-f $sourcevm_conffile) { | |
3174 | my $data = PVE::Tools::file_get_contents($sourcevm_conffile); | |
3175 | PVE::Tools::file_set_contents($clonevm_conffile, $data); | |
3176 | } | |
3177 | } | |
3178 | ||
6fc63ffd | 3179 | sub read_vm_firewall_configs { |
a523e057 | 3180 | my ($cluster_conf, $vmdata, $dir, $verbose) = @_; |
8aef5177 | 3181 | |
6fc63ffd | 3182 | my $vmfw_configs = {}; |
c8301d63 | 3183 | |
b6b8e6ad | 3184 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
a523e057 | 3185 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose); |
b6b8e6ad DM |
3186 | next if !$vmfw_conf->{options}; # skip if file does not exists |
3187 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
3188 | } | |
3b4882dc AG |
3189 | foreach my $vmid (keys %{$vmdata->{lxc}}) { |
3190 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose); | |
3191 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
3192 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
3193 | } | |
5e1267a5 | 3194 | |
6fc63ffd | 3195 | return $vmfw_configs; |
5e1267a5 DM |
3196 | } |
3197 | ||
2d404ffc DM |
3198 | sub get_option_log_level { |
3199 | my ($options, $k) = @_; | |
3200 | ||
3201 | my $v = $options->{$k}; | |
178a63be | 3202 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
3203 | |
3204 | return undef if $v eq '' || $v eq 'nolog'; | |
3205 | ||
3489f8a2 | 3206 | return $v if defined($log_level_hash->{$v}); |
2d404ffc DM |
3207 | |
3208 | warn "unknown log level ($k = '$v')\n"; | |
3209 | ||
3210 | return undef; | |
3211 | } | |
3212 | ||
d8f2505e | 3213 | sub generate_std_chains { |
db8a955f DM |
3214 | my ($ruleset, $options, $ipversion) = @_; |
3215 | ||
3216 | my $std_chains = $pve_std_chains->{$ipversion} || die "internal error"; | |
cbb5d6f3 | 3217 | |
2d404ffc | 3218 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
044409e5 TW |
3219 | my $chain = 'PVEFW-smurflog'; |
3220 | if ( $std_chains->{$chain} ) { | |
3221 | foreach my $r (@{$std_chains->{$chain}}) { | |
3222 | $r->{log} = $loglevel; | |
3223 | } | |
db8a955f | 3224 | } |
2d404ffc DM |
3225 | |
3226 | # same as shorewall logflags action. | |
3227 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde | 3228 | $chain = 'PVEFW-logflags'; |
044409e5 TW |
3229 | if ( $std_chains->{$chain} ) { |
3230 | foreach my $r (@{$std_chains->{$chain}}) { | |
3231 | $r->{log} = $loglevel; | |
3232 | } | |
3233 | } | |
d8f2505e | 3234 | |
db8a955f | 3235 | foreach my $chain (keys %$std_chains) { |
d8f2505e | 3236 | ruleset_create_chain($ruleset, $chain); |
db8a955f | 3237 | foreach my $rule (@{$std_chains->{$chain}}) { |
d8f2505e | 3238 | if (ref($rule)) { |
3489f8a2 | 3239 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0); |
d8f2505e | 3240 | } else { |
044409e5 | 3241 | die "rule $rule as string - should not happen"; |
d8f2505e DM |
3242 | } |
3243 | } | |
3244 | } | |
3245 | } | |
3246 | ||
34cdedfa | 3247 | sub generate_ipset_chains { |
74601077 | 3248 | my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_; |
34cdedfa | 3249 | |
74601077 | 3250 | foreach my $ipset (keys %{$ipsets}) { |
34cdedfa | 3251 | |
74601077 | 3252 | my $options = $ipsets->{$ipset}; |
34cdedfa | 3253 | |
ebf72e49 WB |
3254 | if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) { |
3255 | if (my $ips = $device_ips->{$1}) { | |
3256 | $options = [@$options, @$ips]; | |
3257 | } | |
3258 | } | |
3259 | ||
88c26d5e DM |
3260 | # remove duplicates |
3261 | my $nethash = {}; | |
3262 | foreach my $entry (@$options) { | |
3263 | next if $entry->{errors}; # skip entries with errors | |
3264 | eval { | |
3265 | my ($cidr, $ver); | |
3266 | if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) { | |
3267 | ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr}); | |
3268 | } else { | |
3269 | ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr}); | |
3270 | } | |
3271 | #http://backreference.org/2013/03/01/ipv6-address-normalization/ | |
3272 | if ($ver == 6) { | |
e0a9139f WB |
3273 | # ip_compress_address takes an address only, no CIDR |
3274 | my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@); | |
3275 | $cidr = lc(Net::IP::ip_compress_address($addr, 6)); | |
3276 | $cidr .= $prefix_len if defined($prefix_len); | |
88c26d5e DM |
3277 | $cidr =~ s|/128$||; |
3278 | } else { | |
3279 | $cidr =~ s|/32$||; | |
3280 | } | |
34cdedfa | 3281 | |
88c26d5e DM |
3282 | $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} }; |
3283 | }; | |
3284 | warn $@ if $@; | |
3285 | } | |
6d959e3f | 3286 | |
88c26d5e DM |
3287 | foreach my $ipversion (4, 6) { |
3288 | my $data = $nethash->{$ipversion}; | |
30f1b100 | 3289 | |
88c26d5e | 3290 | my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion); |
6d959e3f | 3291 | |
88c26d5e DM |
3292 | my $hashsize = scalar(@$options); |
3293 | if ($hashsize <= 64) { | |
3294 | $hashsize = 64; | |
3295 | } else { | |
3296 | $hashsize = round_powerof2($hashsize); | |
3297 | } | |
6d959e3f | 3298 | |
88c26d5e | 3299 | my $family = $ipversion == "6" ? "inet6" : "inet"; |
30f1b100 | 3300 | |
88c26d5e | 3301 | $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"]; |
6d959e3f | 3302 | |
88c26d5e DM |
3303 | foreach my $cidr (sort keys %$data) { |
3304 | my $entry = $data->{$cidr}; | |
6d959e3f | 3305 | |
88c26d5e DM |
3306 | my $cmd = "add $name $cidr"; |
3307 | if ($entry->{nomatch}) { | |
3308 | if ($feature_ipset_nomatch) { | |
3309 | push @{$ipset_ruleset->{$name}}, "$cmd nomatch"; | |
3310 | } else { | |
3311 | warn "ignore !$cidr - nomatch not supported by kernel\n"; | |
3312 | } | |
6d959e3f | 3313 | } else { |
88c26d5e | 3314 | push @{$ipset_ruleset->{$name}}, $cmd; |
6d959e3f | 3315 | } |
9d6f90e6 | 3316 | } |
9d6f90e6 | 3317 | } |
34cdedfa | 3318 | } |
2a052ee3 AD |
3319 | } |
3320 | ||
3321 | sub round_powerof2 { | |
dd7a13fd | 3322 | my ($int) = @_; |
2a052ee3 | 3323 | |
dd7a13fd DM |
3324 | $int--; |
3325 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
3326 | return ++$int; | |
34cdedfa AD |
3327 | } |
3328 | ||
fca39c2c | 3329 | sub load_clusterfw_conf { |
d4cda423 | 3330 | my ($filename, $verbose) = @_; |
8aef5177 DM |
3331 | |
3332 | $filename = $clusterfw_conf_filename if !defined($filename); | |
530c005e | 3333 | |
fca39c2c | 3334 | my $cluster_conf = {}; |
8aef5177 | 3335 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 3336 | $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose); |
51bae274 | 3337 | } |
5e1267a5 | 3338 | |
fca39c2c | 3339 | return $cluster_conf; |
e5d76bde DM |
3340 | } |
3341 | ||
fca39c2c DM |
3342 | sub save_clusterfw_conf { |
3343 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
3344 | |
3345 | my $raw = ''; | |
9c7e0858 | 3346 | |
c6f5cc88 | 3347 | my $options = $cluster_conf->{options}; |
89ea63c8 | 3348 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
9c7e0858 | 3349 | |
0d5f0a0f | 3350 | my $aliases = $cluster_conf->{aliases}; |
89ea63c8 | 3351 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e34d0e58 | 3352 | |
89ea63c8 | 3353 | $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset}; |
1210ae94 | 3354 | |
c6f5cc88 | 3355 | my $rules = $cluster_conf->{rules}; |
89ea63c8 | 3356 | if ($rules && scalar(@$rules)) { |
c6f5cc88 | 3357 | $raw .= "[RULES]\n\n"; |
63c91681 | 3358 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
3359 | $raw .= "\n"; |
3360 | } | |
3361 | ||
89ea63c8 DM |
3362 | if ($cluster_conf->{groups}) { |
3363 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
3364 | my $rules = $cluster_conf->{groups}->{$group}; | |
3365 | if (my $comment = $cluster_conf->{group_comments}->{$group}) { | |
3366 | my $utf8comment = encode('utf8', $comment); | |
3367 | $raw .= "[group $group] # $utf8comment\n\n"; | |
3368 | } else { | |
3369 | $raw .= "[group $group]\n\n"; | |
3370 | } | |
0d22acb3 | 3371 | |
89ea63c8 DM |
3372 | $raw .= &$format_rules($rules, 0); |
3373 | $raw .= "\n"; | |
3374 | } | |
9c7e0858 DM |
3375 | } |
3376 | ||
c32e04e6 FG |
3377 | if ($raw) { |
3378 | mkdir $pvefw_conf_dir; | |
3379 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); | |
3380 | } else { | |
3381 | unlink $clusterfw_conf_filename; | |
3382 | } | |
9c7e0858 DM |
3383 | } |
3384 | ||
8b27beb9 | 3385 | sub load_hostfw_conf { |
a523e057 | 3386 | my ($cluster_conf, $filename, $verbose) = @_; |
8aef5177 DM |
3387 | |
3388 | $filename = $hostfw_conf_filename if !defined($filename); | |
8b27beb9 DM |
3389 | |
3390 | my $hostfw_conf = {}; | |
8aef5177 | 3391 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 3392 | $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose); |
8b27beb9 DM |
3393 | } |
3394 | return $hostfw_conf; | |
3395 | } | |
3396 | ||
63c91681 DM |
3397 | sub save_hostfw_conf { |
3398 | my ($hostfw_conf) = @_; | |
3399 | ||
3400 | my $raw = ''; | |
3401 | ||
3402 | my $options = $hostfw_conf->{options}; | |
89ea63c8 | 3403 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 3404 | |
63c91681 | 3405 | my $rules = $hostfw_conf->{rules}; |
89ea63c8 | 3406 | if ($rules && scalar(@$rules)) { |
63c91681 DM |
3407 | $raw .= "[RULES]\n\n"; |
3408 | $raw .= &$format_rules($rules, 1); | |
3409 | $raw .= "\n"; | |
3410 | } | |
3411 | ||
c32e04e6 FG |
3412 | if ($raw) { |
3413 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
3414 | } else { | |
3415 | unlink $hostfw_conf_filename; | |
3416 | } | |
63c91681 DM |
3417 | } |
3418 | ||
e5d76bde | 3419 | sub compile { |
d4cda423 | 3420 | my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_; |
3dfa8a7f | 3421 | |
8aef5177 DM |
3422 | my $vmfw_configs; |
3423 | ||
cfd7cd9c TW |
3424 | # fixme: once we read standard chains from config this needs to be put in test/standard cases below |
3425 | $pve_std_chains = dclone($pve_std_chains_conf); | |
3426 | ||
8aef5177 DM |
3427 | if ($vmdata) { # test mode |
3428 | my $testdir = $vmdata->{testdir} || die "no test directory specified"; | |
3429 | my $filename = "$testdir/cluster.fw"; | |
d4cda423 | 3430 | $cluster_conf = load_clusterfw_conf($filename, $verbose); |
8aef5177 DM |
3431 | |
3432 | $filename = "$testdir/host.fw"; | |
a523e057 | 3433 | $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose); |
8aef5177 | 3434 | |
a523e057 | 3435 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose); |
8aef5177 | 3436 | } else { # normal operation |
d4cda423 | 3437 | $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf; |
8aef5177 | 3438 | |
a523e057 | 3439 | $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf; |
8aef5177 DM |
3440 | |
3441 | $vmdata = read_local_vm_config(); | |
a523e057 | 3442 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose); |
8aef5177 | 3443 | } |
3dfa8a7f | 3444 | |
84025e99 | 3445 | return ({},{},{},{}) if !$cluster_conf->{options}->{enable}; |
9268573a | 3446 | |
525778d7 DM |
3447 | my $localnet; |
3448 | if ($cluster_conf->{aliases}->{local_network}) { | |
3449 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
3450 | } else { | |
afcd29b3 DM |
3451 | my $localnet_ver; |
3452 | ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8'); | |
3453 | ||
84025e99 | 3454 | $cluster_conf->{aliases}->{local_network} = { |
afcd29b3 | 3455 | name => 'local_network', cidr => $localnet, ipversion => $localnet_ver }; |
525778d7 DM |
3456 | } |
3457 | ||
3458 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
bfc488f6 | 3459 | |
147dd882 WB |
3460 | my $ruleset = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose); |
3461 | my $rulesetv6 = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose); | |
c5e8b008 | 3462 | my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose); |
147dd882 WB |
3463 | my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata); |
3464 | ||
c5e8b008 | 3465 | return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset); |
147dd882 WB |
3466 | } |
3467 | ||
3468 | sub compile_iptables_filter { | |
3469 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_; | |
085fd492 | 3470 | |
3fa83edf DM |
3471 | my $ruleset = {}; |
3472 | ||
dec84fcd DM |
3473 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
3474 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 3475 | |
fadb13dd | 3476 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
e34d0e58 | 3477 | |
8b27beb9 | 3478 | my $hostfw_options = $hostfw_conf->{options} || {}; |
fadb13dd | 3479 | |
88733a74 AD |
3480 | # fixme: what log level should we use here? |
3481 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
3482 | ||
b409c8a8 TL |
3483 | my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0; |
3484 | ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT"); | |
88733a74 | 3485 | |
e2943485 | 3486 | ruleset_create_chain($ruleset, "PVEFW-FWBR-IN"); |
88c26d5e | 3487 | ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel); |
e2943485 | 3488 | |
1e9c5070 | 3489 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN"); |
e2943485 DM |
3490 | |
3491 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); | |
1e9c5070 | 3492 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT"); |
e2943485 | 3493 | |
db8a955f | 3494 | generate_std_chains($ruleset, $hostfw_options, $ipversion); |
fadb13dd | 3495 | |
6d2ab017 | 3496 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 3497 | |
35d1d6da | 3498 | if ($hostfw_enable) { |
aedde2c2 | 3499 | eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); }; |
1a9978ed DM |
3500 | warn $@ if $@; # just to be sure - should not happen |
3501 | } | |
3fa83edf | 3502 | |
6158271d | 3503 | # generate firewall rules for QEMU VMs |
0a0ba19e | 3504 | foreach my $vmid (sort keys %{$vmdata->{qemu}}) { |
1a9978ed DM |
3505 | eval { |
3506 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3507 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3508 | return if !$vmfw_conf; | |
1a9978ed | 3509 | |
0a0ba19e | 3510 | foreach my $netid (sort keys %$conf) { |
1a9978ed DM |
3511 | next if $netid !~ m/^net(\d+)$/; |
3512 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3513 | next if !$net->{firewall}; | |
3514 | my $iface = "tap${vmid}i$1"; | |
3515 | ||
3516 | my $macaddr = $net->{macaddr}; | |
3517 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
84870b1a | 3518 | $vmfw_conf, $vmid, 'IN', $ipversion); |
1a9978ed | 3519 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
84870b1a | 3520 | $vmfw_conf, $vmid, 'OUT', $ipversion); |
1a9978ed DM |
3521 | } |
3522 | }; | |
3523 | warn $@ if $@; # just to be sure - should not happen | |
3fa83edf | 3524 | } |
c8301d63 | 3525 | |
3b4882dc | 3526 | # generate firewall rules for LXC containers |
0a0ba19e | 3527 | foreach my $vmid (sort keys %{$vmdata->{lxc}}) { |
3b4882dc AG |
3528 | eval { |
3529 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3530 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3531 | return if !$vmfw_conf; | |
3532 | ||
3b4882dc | 3533 | if ($vmfw_conf->{options}->{enable}) { |
0a0ba19e | 3534 | foreach my $netid (sort keys %$conf) { |
3b4882dc | 3535 | next if $netid !~ m/^net(\d+)$/; |
a7c85d56 | 3536 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); |
3b4882dc AG |
3537 | next if !$net->{firewall}; |
3538 | my $iface = "veth${vmid}i$1"; | |
3539 | my $macaddr = $net->{hwaddr}; | |
3540 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3541 | $vmfw_conf, $vmid, 'IN', $ipversion); | |
3542 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3543 | $vmfw_conf, $vmid, 'OUT', $ipversion); | |
3544 | } | |
3545 | } | |
3546 | }; | |
3547 | warn $@ if $@; # just to be sure - should not happen | |
3548 | } | |
3549 | ||
097820b0 | 3550 | if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){ |
1e9c5070 | 3551 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS"); |
097820b0 AD |
3552 | } |
3553 | ||
147dd882 WB |
3554 | return $ruleset; |
3555 | } | |
3556 | ||
ebf72e49 WB |
3557 | sub mac_to_linklocal { |
3558 | my ($macaddr) = @_; | |
3559 | my @parts = split(/:/, $macaddr); | |
3560 | # The standard link local address uses the fe80::/64 prefix with the | |
3561 | # modified EUI-64 identifier derived from the MAC address by flipping the | |
3562 | # universal/local bit and inserting FF:FE in the middle. | |
3563 | # See RFC 4291. | |
3564 | $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02); | |
3565 | my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]); | |
3566 | return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]"; | |
3567 | } | |
3568 | ||
147dd882 WB |
3569 | sub compile_ipsets { |
3570 | my ($cluster_conf, $vmfw_configs, $vmdata) = @_; | |
3571 | ||
3572 | my $localnet; | |
3573 | if ($cluster_conf->{aliases}->{local_network}) { | |
3574 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
3575 | } else { | |
3576 | my $localnet_ver; | |
3577 | ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8'); | |
3578 | ||
3579 | $cluster_conf->{aliases}->{local_network} = { | |
3580 | name => 'local_network', cidr => $localnet, ipversion => $localnet_ver }; | |
3581 | } | |
3582 | ||
3583 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
3584 | ||
3585 | ||
3586 | my $ipset_ruleset = {}; | |
3587 | ||
3588 | # generate ipsets for QEMU VMs | |
3589 | foreach my $vmid (keys %{$vmdata->{qemu}}) { | |
3590 | eval { | |
3591 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3592 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3593 | return if !$vmfw_conf; | |
3594 | ||
74601077 WB |
3595 | # When the 'ipfilter' option is enabled every device for which there |
3596 | # is no 'ipfilter-netX' ipset defiend gets an implicit empty default | |
3597 | # ipset. | |
3598 | # The reason is that ipfilter ipsets are always filled with standard | |
3599 | # IPv6 link-local filters. | |
3600 | my $ipsets = $vmfw_conf->{ipset}; | |
3601 | my $implicit_sets = {}; | |
3602 | ||
ebf72e49 WB |
3603 | my $device_ips = {}; |
3604 | foreach my $netid (keys %$conf) { | |
3605 | next if $netid !~ m/^net(\d+)$/; | |
3606 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3607 | next if !$net->{firewall}; | |
3608 | ||
74601077 WB |
3609 | if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) { |
3610 | $implicit_sets->{"ipfilter-$netid"} = []; | |
3611 | } | |
3612 | ||
ebf72e49 WB |
3613 | my $macaddr = $net->{macaddr}; |
3614 | my $linklocal = mac_to_linklocal($macaddr); | |
3615 | $device_ips->{$netid} = [ | |
3616 | { cidr => $linklocal }, | |
3617 | { cidr => 'fe80::/10', nomatch => 1 } | |
3618 | ]; | |
3619 | } | |
3620 | ||
74601077 WB |
3621 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets); |
3622 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets); | |
147dd882 WB |
3623 | }; |
3624 | warn $@ if $@; # just to be sure - should not happen | |
3625 | } | |
3626 | ||
3627 | # generate firewall rules for LXC containers | |
3628 | foreach my $vmid (keys %{$vmdata->{lxc}}) { | |
aa229652 WB |
3629 | eval { |
3630 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3631 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3632 | return if !$vmfw_conf; | |
147dd882 | 3633 | |
74601077 WB |
3634 | # When the 'ipfilter' option is enabled every device for which there |
3635 | # is no 'ipfilter-netX' ipset defiend gets an implicit empty default | |
3636 | # ipset. | |
3637 | # The reason is that ipfilter ipsets are always filled with standard | |
383fe679 WB |
3638 | # IPv6 link-local filters, as well as the IP addresses configured |
3639 | # for the container. | |
74601077 WB |
3640 | my $ipsets = $vmfw_conf->{ipset}; |
3641 | my $implicit_sets = {}; | |
3642 | ||
ebf72e49 WB |
3643 | my $device_ips = {}; |
3644 | foreach my $netid (keys %$conf) { | |
3645 | next if $netid !~ m/^net(\d+)$/; | |
a7c85d56 | 3646 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); |
ebf72e49 WB |
3647 | next if !$net->{firewall}; |
3648 | ||
74601077 WB |
3649 | if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) { |
3650 | $implicit_sets->{"ipfilter-$netid"} = []; | |
3651 | } | |
3652 | ||
ebf72e49 WB |
3653 | my $macaddr = $net->{hwaddr}; |
3654 | my $linklocal = mac_to_linklocal($macaddr); | |
383fe679 | 3655 | my $set = $device_ips->{$netid} = [ |
ebf72e49 WB |
3656 | { cidr => $linklocal }, |
3657 | { cidr => 'fe80::/10', nomatch => 1 } | |
3658 | ]; | |
37ef1ce1 | 3659 | if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) { |
383fe679 WB |
3660 | push @$set, { cidr => $1 }; |
3661 | } | |
37ef1ce1 | 3662 | if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) { |
383fe679 WB |
3663 | push @$set, { cidr => $1 }; |
3664 | } | |
ebf72e49 WB |
3665 | } |
3666 | ||
74601077 WB |
3667 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets); |
3668 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets); | |
aa229652 WB |
3669 | }; |
3670 | warn $@ if $@; # just to be sure - should not happen | |
147dd882 WB |
3671 | } |
3672 | ||
74601077 | 3673 | generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset}); |
27083984 | 3674 | |
147dd882 | 3675 | return $ipset_ruleset; |
3fa83edf DM |
3676 | } |
3677 | ||
c5e8b008 AD |
3678 | sub compile_ebtables_filter { |
3679 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose) = @_; | |
3680 | ||
2549e7ef | 3681 | if (!($cluster_conf->{options}->{ebtables} // 1)) { |
84025e99 SI |
3682 | return {}; |
3683 | } | |
c5e8b008 AD |
3684 | |
3685 | my $ruleset = {}; | |
3686 | ||
3687 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); | |
3688 | ||
c5e8b008 AD |
3689 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); |
3690 | #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules | |
3691 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT'); | |
3692 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT'); | |
3693 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT'); | |
3694 | ||
3695 | # generate firewall rules for QEMU VMs | |
2e30c5c7 | 3696 | foreach my $vmid (sort keys %{$vmdata->{qemu}}) { |
c5e8b008 AD |
3697 | eval { |
3698 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3699 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3700 | return if !$vmfw_conf; | |
401c141b | 3701 | my $ipsets = $vmfw_conf->{ipset}; |
c5e8b008 | 3702 | |
4a1072dd | 3703 | foreach my $netid (sort keys %$conf) { |
c5e8b008 AD |
3704 | next if $netid !~ m/^net(\d+)$/; |
3705 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3706 | next if !$net->{firewall}; | |
3707 | my $iface = "tap${vmid}i$1"; | |
3708 | my $macaddr = $net->{macaddr}; | |
401c141b AD |
3709 | my $arpfilter = []; |
3710 | if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) { | |
3711 | foreach my $ipaddr (@$ipset) { | |
3712 | my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr}); | |
3713 | next if !$ip || ($version && $version != 4); | |
3714 | push(@$arpfilter, $ip); | |
3715 | } | |
3716 | } | |
3717 | generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter); | |
c5e8b008 AD |
3718 | } |
3719 | }; | |
3720 | warn $@ if $@; # just to be sure - should not happen | |
3721 | } | |
3722 | ||
3723 | # generate firewall rules for LXC containers | |
2e30c5c7 | 3724 | foreach my $vmid (sort keys %{$vmdata->{lxc}}) { |
c5e8b008 AD |
3725 | eval { |
3726 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3727 | ||
3728 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3729 | return if !$vmfw_conf || !$vmfw_conf->{options}->{enable}; | |
401c141b | 3730 | my $ipsets = $vmfw_conf->{ipset}; |
c5e8b008 | 3731 | |
4a1072dd | 3732 | foreach my $netid (sort keys %$conf) { |
c5e8b008 AD |
3733 | next if $netid !~ m/^net(\d+)$/; |
3734 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); | |
3735 | next if !$net->{firewall}; | |
3736 | my $iface = "veth${vmid}i$1"; | |
3737 | my $macaddr = $net->{hwaddr}; | |
401c141b AD |
3738 | my $arpfilter = []; |
3739 | if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) { | |
3740 | foreach my $ipaddr (@$ipset) { | |
3741 | my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr}); | |
3742 | next if !$ip || ($version && $version != 4); | |
3743 | push(@$arpfilter, $ip); | |
3744 | } | |
3745 | } | |
3746 | push(@$arpfilter, $net->{ip}) if $net->{ip} && $vmfw_conf->{options}->{ipfilter}; | |
3747 | generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter); | |
c5e8b008 AD |
3748 | } |
3749 | }; | |
3750 | warn $@ if $@; # just to be sure - should not happen | |
3751 | } | |
3752 | ||
3753 | return $ruleset; | |
3754 | } | |
3755 | ||
3756 | sub generate_tap_layer2filter { | |
401c141b | 3757 | my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_; |
c5e8b008 AD |
3758 | my $options = $vmfw_conf->{options}; |
3759 | ||
3760 | my $tapchain = $iface."-OUT"; | |
3761 | ||
3762 | # ebtables remove zeros from mac pairs | |
3763 | $macaddr =~ s/0([0-9a-f])/$1/ig; | |
3764 | $macaddr = lc($macaddr); | |
3765 | ||
3766 | ruleset_create_chain($ruleset, $tapchain); | |
3767 | ||
3768 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
3769 | ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP'); | |
3770 | } | |
3771 | ||
401c141b AD |
3772 | if (@$arpfilter){ |
3773 | my $arpchain = $tapchain."-ARP"; | |
3774 | ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain"); | |
3775 | ruleset_create_chain($ruleset, $arpchain); | |
3776 | ||
3777 | foreach my $ip (@{$arpfilter}) { | |
3778 | ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN'); | |
3779 | } | |
3780 | ruleset_addrule($ruleset, $arpchain, '', '-j DROP'); | |
3781 | } | |
3782 | ||
c5e8b008 | 3783 | if (defined($options->{layer2_protocols})){ |
33efd363 AD |
3784 | my $protochain = $tapchain."-PROTO"; |
3785 | ruleset_addrule($ruleset, $tapchain, '', "-j $protochain"); | |
3786 | ruleset_create_chain($ruleset, $protochain); | |
3787 | ||
c5e8b008 | 3788 | foreach my $proto (split(/,/, $options->{layer2_protocols})) { |
33efd363 | 3789 | ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN'); |
c5e8b008 | 3790 | } |
33efd363 | 3791 | ruleset_addrule($ruleset, $protochain, '', '-j DROP'); |
c5e8b008 AD |
3792 | } |
3793 | ||
33efd363 AD |
3794 | ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT'); |
3795 | ||
c5e8b008 AD |
3796 | ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain"); |
3797 | } | |
3798 | ||
84025e99 SI |
3799 | # the parameter $change_only_regex changes two things if defined: |
3800 | # * all chains not matching it will be left intact | |
3801 | # * both the $active_chains hash and the returned status_hash have different | |
3802 | # structure (they contain a key named 'rules'). | |
3fa83edf | 3803 | sub get_ruleset_status { |
84025e99 | 3804 | my ($ruleset, $active_chains, $digest_fn, $verbose, $change_only_regex) = @_; |
3fa83edf DM |
3805 | |
3806 | my $statushash = {}; | |
3807 | ||
3808 | foreach my $chain (sort keys %$ruleset) { | |
84025e99 SI |
3809 | my $rules = $ruleset->{$chain}; |
3810 | my $sig = &$digest_fn($rules); | |
3811 | my $oldsig; | |
9bf7d929 | 3812 | |
3fa83edf | 3813 | $statushash->{$chain}->{sig} = $sig; |
84025e99 SI |
3814 | if (defined($change_only_regex)) { |
3815 | $oldsig = $active_chains->{$chain}->{sig}; | |
3816 | $statushash->{$chain}->{rules} = $rules; | |
3817 | } else { | |
3818 | $oldsig = $active_chains->{$chain}; | |
3819 | } | |
3fa83edf DM |
3820 | if (!defined($oldsig)) { |
3821 | $statushash->{$chain}->{action} = 'create'; | |
3822 | } else { | |
3823 | if ($oldsig eq $sig) { | |
3824 | $statushash->{$chain}->{action} = 'exists'; | |
3825 | } else { | |
3826 | $statushash->{$chain}->{action} = 'update'; | |
3827 | } | |
3828 | } | |
84025e99 SI |
3829 | if ($verbose) { |
3830 | print "$statushash->{$chain}->{action} $chain ($sig)\n"; | |
3831 | foreach my $cmd (@{$rules}) { | |
3832 | print "\t$cmd\n"; | |
3833 | } | |
3fa83edf DM |
3834 | } |
3835 | } | |
3836 | ||
3837 | foreach my $chain (sort keys %$active_chains) { | |
84025e99 SI |
3838 | next if defined($ruleset->{$chain}); |
3839 | my $action = 'delete'; | |
d9551052 | 3840 | my $sig = $active_chains->{$chain}; |
84025e99 SI |
3841 | if (defined($change_only_regex)) { |
3842 | $action = 'ignore' if ($chain !~ m/$change_only_regex/); | |
3843 | $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules}; | |
d9551052 | 3844 | $sig = $sig->{sig}; |
84025e99 | 3845 | } |
84025e99 SI |
3846 | $statushash->{$chain}->{action} = $action; |
3847 | $statushash->{$chain}->{sig} = $sig; | |
3848 | print "$action $chain ($sig)\n" if $verbose; | |
6158271d | 3849 | } |
2a052ee3 | 3850 | |
3fa83edf DM |
3851 | return $statushash; |
3852 | } | |
3853 | ||
3fa83edf DM |
3854 | sub print_sig_rule { |
3855 | my ($chain, $sig) = @_; | |
3856 | ||
09d5f68e DM |
3857 | # We just use this to store a SHA1 checksum used to detect changes |
3858 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
3859 | } |
3860 | ||
df7cb349 | 3861 | sub get_ruleset_cmdlist { |
17da5c0f | 3862 | my ($ruleset, $verbose, $iptablescmd) = @_; |
3fa83edf | 3863 | |
3fa83edf | 3864 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 3865 | |
17da5c0f | 3866 | my ($active_chains, $hooks) = iptables_get_chains($iptablescmd); |
4bd0a9c4 | 3867 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); |
3fa83edf DM |
3868 | |
3869 | # create missing chains first | |
3870 | foreach my $chain (sort keys %$ruleset) { | |
3871 | my $stat = $statushash->{$chain}; | |
3872 | die "internal error" if !$stat; | |
3873 | next if $stat->{action} ne 'create'; | |
886aba9c | 3874 | |
3fa83edf DM |
3875 | $cmdlist .= ":$chain - [0:0]\n"; |
3876 | } | |
3877 | ||
4bd0a9c4 | 3878 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
55fad3b7 DM |
3879 | my $chain = "PVEFW-$h"; |
3880 | if ($ruleset->{$chain} && !$hooks->{$h}) { | |
3881 | $cmdlist .= "-A $h -j $chain\n"; | |
4bd0a9c4 | 3882 | } |
3fa83edf DM |
3883 | } |
3884 | ||
3885 | foreach my $chain (sort keys %$ruleset) { | |
3886 | my $stat = $statushash->{$chain}; | |
3887 | die "internal error" if !$stat; | |
3888 | ||
3889 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
3890 | $cmdlist .= "-F $chain\n"; | |
3891 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3892 | $cmdlist .= "$cmd\n"; | |
3893 | } | |
3894 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
3895 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 3896 | die "internal error"; # this should not happen |
3fa83edf DM |
3897 | } elsif ($stat->{action} eq 'exists') { |
3898 | # do nothing | |
3899 | } else { | |
3900 | die "internal error - unknown status '$stat->{action}'"; | |
3901 | } | |
3902 | } | |
3903 | ||
f5d28682 DM |
3904 | foreach my $chain (keys %$statushash) { |
3905 | next if $statushash->{$chain}->{action} ne 'delete'; | |
3906 | $cmdlist .= "-F $chain\n"; | |
3907 | } | |
3908 | foreach my $chain (keys %$statushash) { | |
3909 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
3910 | next if $chain eq 'PVEFW-INPUT'; |
3911 | next if $chain eq 'PVEFW-OUTPUT'; | |
3912 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
3913 | $cmdlist .= "-X $chain\n"; |
3914 | } | |
3915 | ||
3f95d14a | 3916 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 3917 | |
3fa83edf DM |
3918 | $cmdlist .= "COMMIT\n"; |
3919 | ||
3f95d14a | 3920 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
3921 | } |
3922 | ||
d4a23c88 | 3923 | my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/; |
84025e99 | 3924 | |
151c209e AD |
3925 | sub get_ebtables_cmdlist { |
3926 | my ($ruleset, $verbose) = @_; | |
3927 | ||
3928 | my $changes = 0; | |
3929 | my $cmdlist = "*filter\n"; | |
3930 | ||
84025e99 SI |
3931 | my $active_chains = ebtables_get_chains(); |
3932 | my $statushash = get_ruleset_status($ruleset, $active_chains, | |
3933 | \&iptables_chain_digest, $verbose, | |
3934 | $pve_ebtables_chainname_regex); | |
151c209e | 3935 | |
84025e99 SI |
3936 | # create chains first and make sure PVE rules are evaluated if active |
3937 | my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD'; | |
3938 | my $pve_include = 0; | |
3939 | foreach my $chain (sort keys %$statushash) { | |
3940 | next if ($statushash->{$chain}->{action} eq 'delete'); | |
151c209e | 3941 | $cmdlist .= ":$chain ACCEPT\n"; |
84025e99 | 3942 | $pve_include = 1 if ($chain eq 'PVEFW-FORWARD'); |
151c209e AD |
3943 | } |
3944 | ||
84025e99 | 3945 | foreach my $chain (sort keys %$statushash) { |
151c209e | 3946 | my $stat = $statushash->{$chain}; |
84025e99 SI |
3947 | next if ($stat->{action} eq 'delete'); |
3948 | $changes = 1 if ($stat->{action} !~ 'ignore|exists'); | |
151c209e | 3949 | |
84025e99 SI |
3950 | foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) { |
3951 | if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) { | |
3952 | next if ! $pve_include; | |
3953 | $pve_include = 0; | |
3954 | } | |
151c209e AD |
3955 | $cmdlist .= "$cmd\n"; |
3956 | } | |
3957 | } | |
84025e99 | 3958 | $cmdlist .= "$append_pve_to_forward\n" if $pve_include; |
151c209e AD |
3959 | |
3960 | return wantarray ? ($cmdlist, $changes) : $cmdlist; | |
3961 | } | |
3962 | ||
34cdedfa | 3963 | sub get_ipset_cmdlist { |
dd7a13fd | 3964 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
3965 | |
3966 | my $cmdlist = ""; | |
3967 | ||
dd7a13fd DM |
3968 | my $delete_cmdlist = ""; |
3969 | ||
4bd0a9c4 DM |
3970 | my $active_chains = ipset_get_chains(); |
3971 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 3972 | |
e34d0e58 | 3973 | # remove stale _swap chains |
30f1b100 DM |
3974 | foreach my $chain (keys %$active_chains) { |
3975 | if ($chain =~ m/^PVEFW-\S+_swap$/) { | |
3976 | $cmdlist .= "destroy $chain\n"; | |
3977 | } | |
3978 | } | |
3979 | ||
c69cf614 | 3980 | foreach my $chain (keys %$ruleset) { |
c69cf614 DM |
3981 | my $stat = $statushash->{$chain}; |
3982 | die "internal error" if !$stat; | |
3983 | ||
3984 | if ($stat->{action} eq 'create') { | |
3985 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3986 | $cmdlist .= "$cmd\n"; | |
3987 | } | |
3988 | } | |
3989 | } | |
3990 | ||
3991 | foreach my $chain (keys %$ruleset) { | |
6d959e3f DM |
3992 | my $stat = $statushash->{$chain}; |
3993 | die "internal error" if !$stat; | |
34cdedfa | 3994 | |
dd7a13fd DM |
3995 | if ($stat->{action} eq 'update') { |
3996 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 3997 | |
dd7a13fd DM |
3998 | foreach my $cmd (@{$ruleset->{$chain}}) { |
3999 | $cmd =~ s/$chain/$chain_swap/; | |
4000 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 4001 | } |
dd7a13fd DM |
4002 | $cmdlist .= "swap $chain_swap $chain\n"; |
4003 | $cmdlist .= "flush $chain_swap\n"; | |
4004 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 4005 | } |
dd7a13fd | 4006 | } |
3f95d14a | 4007 | |
88c26d5e | 4008 | # the remove unused chains |
c69cf614 | 4009 | foreach my $chain (keys %$statushash) { |
dd7a13fd | 4010 | next if $statushash->{$chain}->{action} ne 'delete'; |
2a052ee3 | 4011 | |
dd7a13fd DM |
4012 | $delete_cmdlist .= "flush $chain\n"; |
4013 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
4014 | } |
4015 | ||
dd7a13fd | 4016 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 4017 | |
dd7a13fd | 4018 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
4019 | } |
4020 | ||
6b9f68a2 | 4021 | sub apply_ruleset { |
151c209e | 4022 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset, $verbose) = @_; |
6b9f68a2 DM |
4023 | |
4024 | enable_bridge_firewall(); | |
4025 | ||
cbb5d6f3 | 4026 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
9a462317 | 4027 | get_ipset_cmdlist($ipset_ruleset, $verbose); |
6b9f68a2 | 4028 | |
81a0bf43 | 4029 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
17da5c0f | 4030 | my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
151c209e | 4031 | my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset, $verbose); |
2a052ee3 | 4032 | |
81a0bf43 DM |
4033 | if ($verbose) { |
4034 | if ($ipset_changes) { | |
4035 | print "ipset changes:\n"; | |
4036 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
4037 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
4038 | } | |
3f95d14a | 4039 | |
81a0bf43 DM |
4040 | if ($changes) { |
4041 | print "iptables changes:\n"; | |
4042 | print $cmdlist; | |
4043 | } | |
17da5c0f AD |
4044 | |
4045 | if ($changesv6) { | |
4046 | print "ip6tables changes:\n"; | |
4047 | print $cmdlistv6; | |
4048 | } | |
151c209e AD |
4049 | |
4050 | if ($ebtables_changes) { | |
4051 | print "ebtables changes:\n"; | |
4052 | print $ebtables_cmdlist; | |
4053 | } | |
81a0bf43 | 4054 | } |
3fa83edf | 4055 | |
259db1e6 DM |
4056 | my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1"; |
4057 | PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || ''); | |
4058 | ||
2a052ee3 | 4059 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 4060 | |
259db1e6 DM |
4061 | $tmpfile = "$pve_fw_status_dir/ip4cmdlist"; |
4062 | PVE::Tools::file_set_contents($tmpfile, $cmdlist || ''); | |
4063 | ||
3fa83edf | 4064 | iptables_restore_cmdlist($cmdlist); |
259db1e6 DM |
4065 | |
4066 | $tmpfile = "$pve_fw_status_dir/ip6cmdlist"; | |
4067 | PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || ''); | |
4068 | ||
17da5c0f | 4069 | ip6tables_restore_cmdlist($cmdlistv6); |
3fa83edf | 4070 | |
259db1e6 DM |
4071 | $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2"; |
4072 | PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || ''); | |
4073 | ||
dd7a13fd | 4074 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 4075 | |
151c209e AD |
4076 | ebtables_restore_cmdlist($ebtables_cmdlist); |
4077 | ||
4078 | $tmpfile = "$pve_fw_status_dir/ebtablescmdlist"; | |
4079 | PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || ''); | |
4080 | ||
6158271d | 4081 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 4082 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 4083 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
4084 | |
4085 | my $errors; | |
4086 | foreach my $chain (sort keys %$ruleset) { | |
4087 | my $stat = $statushash->{$chain}; | |
4088 | if ($stat->{action} ne 'exists') { | |
4089 | warn "unable to update chain '$chain'\n"; | |
4090 | $errors = 1; | |
4091 | } | |
4092 | } | |
b6360c3f | 4093 | |
17da5c0f AD |
4094 | my $active_chainsv6 = iptables_get_chains("ip6tables"); |
4095 | my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0); | |
4096 | ||
4097 | foreach my $chain (sort keys %$rulesetv6) { | |
4098 | my $stat = $statushashv6->{$chain}; | |
4099 | if ($stat->{action} ne 'exists') { | |
4100 | warn "unable to update chain '$chain'\n"; | |
4101 | $errors = 1; | |
4102 | } | |
4103 | } | |
4104 | ||
151c209e | 4105 | my $active_ebtables_chains = ebtables_get_chains(); |
84025e99 SI |
4106 | my $ebtables_statushash = get_ruleset_status($ebtables_ruleset, |
4107 | $active_ebtables_chains, \&iptables_chain_digest, | |
4108 | 0, $pve_ebtables_chainname_regex); | |
151c209e AD |
4109 | |
4110 | foreach my $chain (sort keys %$ebtables_ruleset) { | |
4111 | my $stat = $ebtables_statushash->{$chain}; | |
4112 | if ($stat->{action} ne 'exists') { | |
4113 | warn "ebtables : unable to update chain '$chain'\n"; | |
4114 | $errors = 1; | |
4115 | } | |
4116 | } | |
4117 | ||
3fa83edf | 4118 | die "unable to apply firewall changes\n" if $errors; |
46a2ac1f AD |
4119 | |
4120 | update_nf_conntrack_max($hostfw_conf); | |
4121 | ||
4122 | update_nf_conntrack_tcp_timeout_established($hostfw_conf); | |
4123 | ||
6c27f4f3 | 4124 | update_nf_conntrack_logging($hostfw_conf); |
b6360c3f DM |
4125 | } |
4126 | ||
490cdead DM |
4127 | sub update_nf_conntrack_max { |
4128 | my ($hostfw_conf) = @_; | |
4129 | ||
4130 | my $max = 65536; # reasonable default | |
4131 | ||
4132 | my $options = $hostfw_conf->{options} || {}; | |
4133 | ||
4134 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
4135 | $max = $options->{nf_conntrack_max}; | |
4136 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
4137 | } | |
4138 | ||
4139 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
4140 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
4141 | ||
4142 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
4143 | ||
4144 | if ($current != $max) { | |
4145 | my $hashsize = int($max/4); | |
4146 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
4147 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
4148 | } | |
4149 | } | |
4150 | ||
28c082a1 AD |
4151 | sub update_nf_conntrack_tcp_timeout_established { |
4152 | my ($hostfw_conf) = @_; | |
4153 | ||
4154 | my $options = $hostfw_conf->{options} || {}; | |
4155 | ||
4156 | my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000; | |
4157 | ||
4158 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value); | |
4159 | } | |
4160 | ||
6c27f4f3 DL |
4161 | my $log_nf_conntrack_enabled = undef; |
4162 | sub update_nf_conntrack_logging { | |
4163 | my ($hostfw_conf) = @_; | |
4164 | ||
4165 | my $options = $hostfw_conf->{options} || {}; | |
4166 | my $value = $options->{log_nf_conntrack} || 0; | |
4167 | if (!defined($log_nf_conntrack_enabled) | |
4168 | || $value != $log_nf_conntrack_enabled) | |
4169 | { | |
4170 | my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack"; | |
4171 | PVE::Tools::file_set_contents($tmpfile, $value); | |
4172 | ||
4173 | PVE::Tools::run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]); | |
4174 | $log_nf_conntrack_enabled = $value; | |
4175 | } | |
4176 | } | |
4177 | ||
c4a2e5ae DM |
4178 | sub remove_pvefw_chains { |
4179 | ||
7b7b2654 AD |
4180 | PVE::Firewall::remove_pvefw_chains_iptables("iptables"); |
4181 | PVE::Firewall::remove_pvefw_chains_iptables("ip6tables"); | |
4182 | PVE::Firewall::remove_pvefw_chains_ipset(); | |
4183 | ||
4184 | } | |
4185 | ||
4186 | sub remove_pvefw_chains_iptables { | |
4187 | my ($iptablescmd) = @_; | |
4188 | ||
4189 | my ($chash, $hooks) = iptables_get_chains($iptablescmd); | |
c4a2e5ae DM |
4190 | my $cmdlist = "*filter\n"; |
4191 | ||
4192 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
4193 | if ($hooks->{$h}) { | |
4194 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
4195 | } | |
4196 | } | |
cbb5d6f3 | 4197 | |
c4a2e5ae DM |
4198 | foreach my $chain (keys %$chash) { |
4199 | $cmdlist .= "-F $chain\n"; | |
4200 | } | |
4201 | ||
4202 | foreach my $chain (keys %$chash) { | |
4203 | $cmdlist .= "-X $chain\n"; | |
4204 | } | |
4205 | $cmdlist .= "COMMIT\n"; | |
4206 | ||
7b7b2654 AD |
4207 | if($iptablescmd eq "ip6tables") { |
4208 | ip6tables_restore_cmdlist($cmdlist); | |
4209 | } else { | |
4210 | iptables_restore_cmdlist($cmdlist); | |
4211 | } | |
4212 | } | |
4213 | ||
4214 | sub remove_pvefw_chains_ipset { | |
55fad3b7 DM |
4215 | |
4216 | my $ipset_chains = ipset_get_chains(); | |
4217 | ||
7b7b2654 | 4218 | my $cmdlist = ""; |
55fad3b7 DM |
4219 | |
4220 | foreach my $chain (keys %$ipset_chains) { | |
88c26d5e DM |
4221 | $cmdlist .= "flush $chain\n"; |
4222 | $cmdlist .= "destroy $chain\n"; | |
55fad3b7 DM |
4223 | } |
4224 | ||
7b7b2654 | 4225 | ipset_restore_cmdlist($cmdlist) if $cmdlist; |
c4a2e5ae DM |
4226 | } |
4227 | ||
8b453a09 DM |
4228 | sub init { |
4229 | my $cluster_conf = load_clusterfw_conf(); | |
4230 | my $cluster_options = $cluster_conf->{options}; | |
4231 | my $enable = $cluster_options->{enable}; | |
4232 | ||
4233 | return if !$enable; | |
4234 | ||
4235 | # load required modules here | |
4236 | } | |
4237 | ||
6b9f68a2 | 4238 | sub update { |
6b9f68a2 | 4239 | my $code = sub { |
3dfa8a7f DM |
4240 | |
4241 | my $cluster_conf = load_clusterfw_conf(); | |
4242 | my $cluster_options = $cluster_conf->{options}; | |
4243 | ||
55fad3b7 | 4244 | if (!$cluster_options->{enable}) { |
b22130d3 | 4245 | PVE::Firewall::remove_pvefw_chains(); |
3dfa8a7f DM |
4246 | return; |
4247 | } | |
4248 | ||
50f9a28d | 4249 | my $hostfw_conf = load_hostfw_conf($cluster_conf); |
3dfa8a7f | 4250 | |
c5e8b008 | 4251 | my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf); |
490cdead | 4252 | |
151c209e | 4253 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset); |
6b9f68a2 DM |
4254 | }; |
4255 | ||
4256 | run_locked($code); | |
4257 | } | |
4258 | ||
b6360c3f | 4259 | 1; |